WO2024093343A1

WO2024093343A1 - Reciprocating power assembly and pump mechanism

Info

Publication number: WO2024093343A1
Application number: PCT/CN2023/106224
Authority: WO
Inventors: 傅珂珂; 舒华勇; 李进
Original assignee: 浙江千机智能科技有限公司
Priority date: 2022-11-02
Filing date: 2023-07-07
Publication date: 2024-05-10
Also published as: CN218760288U

Abstract

A reciprocating power assembly and a pump mechanism. The reciprocating power assembly (100) comprises reciprocating units (110), a linkage shaft (120), and a power unit (130). Two reciprocating units (110) are provided, reciprocating shafts (111) of the two reciprocating units (110) are respectively connected to two ends of the linkage shaft (120), and a transmission member (132) of the power unit (130) is transmittingly connected to the linkage shaft (120). When a power source (131) drives the transmission member (132) to drive the linkage shaft (120) to rotate, the reciprocating shafts (111) at the two ends can be simultaneously driven to rotate. By using reciprocating guide rails (113) on the reciprocating shafts (111), reciprocating members (112) can reciprocatingly move between a wave crest and a wave trough under the guide action of the reciprocating guide rails (113) having a curved trajectory, and the transmission stability is good. Furthermore, when the reciprocating members (112) drive plungers (220) to reciprocatingly move, a fluid is suctioned into volume cavities (211) by means of first channels (212), and is discharged from second channels (213). According to the reciprocating power assembly (100) and the pump mechanism (10), simultaneous reciprocating motion of the reciprocating members (112) of the two reciprocating units (110) is realized by means of one power source (131) and one linkage shaft (120), so that the transmission efficiency is higher, and the transmission structure is more compact.

Description

Reciprocating power components and pump mechanisms

Technical Field

The utility model relates to the technical field of power transmission structures, in particular to a reciprocating power component and a pump mechanism.

Background technique

The traditional pump structure relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve oil suction and oil pressure. The pump can be used to transport liquids such as water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals, as well as liquid-gas mixtures and liquids containing suspended solids. However, the traditional drive pump plunger motion structure, such as the eccentric drive structure and the crank slider structure, not only has low transmission efficiency, but also poor transmission stability.

Utility Model Content

Based on this, it is necessary to provide a reciprocating power assembly and a pump mechanism that can improve transmission efficiency and transmission stability in order to address the above problems.

A reciprocating power assembly, the reciprocating power assembly comprises a reciprocating unit, a linkage shaft and a power unit, the reciprocating unit comprises a reciprocating shaft and a reciprocating member, the reciprocating shaft is provided with a reciprocating guide rail with a closed curve trajectory surrounding the axis of the reciprocating shaft, and the crests and troughs of the reciprocating guide rail are arranged at intervals along the axis of the reciprocating shaft; the reciprocating member is limited on the reciprocating guide rail and can move on the reciprocating guide rail; the number of the reciprocating units is two; the opposite ends of the linkage shaft are respectively connected to one of the reciprocating shafts; the power unit comprises a power source and a transmission member, the transmission member is connected to the linkage shaft in a transmission manner, and the power source is used to drive the linkage shaft through the transmission member to drive the two reciprocating shafts to rotate synchronously The reciprocating shaft rotates to drive the reciprocating member to reciprocate along the axial direction of the reciprocating shaft under the guidance of the reciprocating guide rail.

In one embodiment, the two reciprocating shafts are coaxially arranged with the linkage shaft, and the tracks of the reciprocating guide rails on the two reciprocating shafts are mirror-symmetrically arranged with respect to the linkage shaft, so that the two reciprocating members move toward or away from each other at the same time.

In one embodiment, the reciprocating guide rail is a reciprocating groove, the reciprocating member includes a rolling body and a reciprocating body, the reciprocating body is sleeved on the reciprocating shaft, the rolling body is arranged between the reciprocating body and the reciprocating shaft and is limited on the reciprocating body, the rolling body is rollably arranged in the reciprocating groove, the reciprocating shaft rotates so that the rolling body drives the reciprocating body to move on the reciprocating shaft, and the reciprocating movement direction of the reciprocating body is consistent with the axial direction of the reciprocating shaft.

In one embodiment, the transmission member includes a first transmission wheel and a second transmission wheel, the first transmission wheel is sleeved on the linkage shaft and located between the two reciprocating shafts, the second transmission wheel is in transmission cooperation with the first transmission wheel, and the second transmission wheel is transmission connected to the power source.

In one embodiment, the power source is a motor, the motor is located between the two reciprocating shafts, the axis of the output shaft of the motor is perpendicular to the axis of the linkage shaft, and the second transmission wheel is drivingly connected to the output shaft of the motor.

In one of the embodiments, the reciprocating power assembly further includes a transmission housing, the transmission member and the linkage shaft are arranged in the transmission housing, and linkage holes are respectively opened on the two opposite side walls of the transmission housing.

In one embodiment, the reciprocating power assembly further includes a reciprocating shell, the number of the reciprocating shells is two, the two reciprocating shells are respectively arranged on the transmission shell, so that the two linkage holes are respectively connected to the two reciprocating shells, the two reciprocating units are respectively arranged in the two reciprocating shells, and the opposite ends of the linkage shaft respectively pass through the two linkage holes and penetrate into the reciprocating shells; A first guide structure is arranged in the reciprocating shell, and a second guide structure is arranged on the reciprocating member. The first guide structure and the second guide structure are guided and matched along the axial direction of the reciprocating shaft.

In one embodiment, there are two linkage shafts, and both ends of each linkage shaft are respectively connected to the reciprocating shaft of the reciprocating unit. The two linkage shafts are connected through the transmission member, and the power source is used to drive the two linkage shafts to rotate synchronously through the transmission member.

The above-mentioned reciprocating power assembly has two reciprocating units, and the reciprocating shafts of the two reciprocating units are respectively connected to the two ends of the linkage shaft, and the transmission member of the power unit is connected to the linkage shaft. When the power source drives the transmission member to drive the linkage shaft to rotate, the reciprocating shafts at both ends can be driven to rotate at the same time. The reciprocating guide rail on the reciprocating shaft is used to drive the reciprocating member to move back and forth along the reciprocating shaft. The reciprocating members of the two reciprocating units can move back and forth at the same time through one power source and one linkage shaft, which is convenient for realizing the reciprocating drive of the two components through two reciprocating members, and the transmission efficiency is higher, making the transmission structure more compact.

During the reciprocating movement of the reciprocating part, the reciprocating shaft rotates, and the reciprocating part can reciprocate between the crests and troughs under the guidance of the reciprocating guide rail with a curved trajectory, thereby achieving the purpose of reciprocating the reciprocating part along the axial direction of the reciprocating shaft, and then the rotational motion of the reciprocating shaft is converted into the linear motion of the reciprocating part. There will be no yaw and runout problems like crank structure or eccentric drive structure, and the working stability is better and the transmission stability is good.

A pump mechanism, the pump mechanism includes a pump assembly and the reciprocating power assembly as described above, the pump assembly includes a pump body and a plunger, a volume cavity is formed in the pump body, and a first channel and a second channel connected to the volume cavity are formed on the outer wall of the pump body; the plunger is connected to the reciprocating member, and the reciprocating member can drive the plunger to reciprocate in the volume cavity, so that the fluid can be sucked into the volume cavity from the first channel and discharged from the second channel.

In one embodiment, the number of the pump assemblies is two, and the plunger of each pump assembly is Corresponding to the reciprocating member connection of a reciprocating unit, the two reciprocating members respectively drive the two plungers to move towards or away from each other, or the two reciprocating members respectively drive the two plungers to move in the same direction.

In one embodiment, the pump mechanism further comprises a liquid inlet connecting pipe, one end of the liquid inlet connecting pipe is connected to the first channel of one pump component, and the other end is connected to the first channel of another pump component, and a liquid inlet port is formed on the liquid inlet connecting pipe; and/or

In one embodiment, the pump mechanism further includes a liquid outlet connecting tube, one end of the liquid outlet connecting tube is connected to the second channel of one pump component, and the other end is connected to the second channel of another pump component, and a liquid outlet is formed on the liquid outlet connecting tube.

In the above pump mechanism, when the reciprocating member drives the plunger to reciprocate, the fluid is sucked into the volume chamber from the first channel and discharged from the second channel, which can ensure the stability of the reciprocating direction of the plunger and further ensure the stability of fluid pumping in and out.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

FIG1 is a schematic structural diagram of a reciprocating power assembly in one embodiment omitting a transmission housing and a reciprocating housing;

FIG2 is a front view of the reciprocating power assembly shown in FIG1 ;

FIG3 is an exploded view of the reciprocating unit in FIG2 ;

FIG4 is a schematic structural diagram of a reciprocating power assembly in another embodiment;

FIG5 is a schematic diagram of the pump mechanism structure in one embodiment;

FIG6 is a cross-sectional view of the pump mechanism shown in FIG5 at a different viewing angle;

FIG. 7 is a cross-sectional view of the pump mechanism shown in FIG. 5 at another viewing angle.

Description of reference numerals:
100, reciprocating power assembly; 110, reciprocating unit; 111, reciprocating shaft; 112, reciprocating member; 113,
Reciprocating guide rail; 114, rolling element; 115, reciprocating element; 116, matching sleeve; 117, ball bearing; 118, second guide structure; 120, linkage shaft; 130, power unit; 131, power source; 132, transmission member; 133, first transmission wheel; 134, second transmission wheel; 140, transmission housing; 150, reciprocating housing; 151, first guide structure;
10. Pump mechanism; 200. Pump assembly; 210. Pump body; 211. Volume chamber; 212. First channel;
213, second channel; 220, plunger; 221, connecting rod; 222, piston body; 300, liquid inlet connecting pipe; 310, liquid inlet port; 400, liquid outlet connecting pipe; 410, liquid outlet port.

Detailed ways

In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

1 to 3, the reciprocating power assembly 100 in one embodiment of the present invention can at least provide High transmission efficiency.

Specifically, the reciprocating power assembly 100 includes a reciprocating unit 110, a linkage shaft 120 and a power unit 130. The reciprocating unit 110 includes a reciprocating shaft 111 and a reciprocating member 112. The reciprocating member 112 is transmission-arranged on the reciprocating shaft 111. There are two reciprocating units 110. The opposite ends of the linkage shaft 120 are respectively connected to a reciprocating shaft 111. The power unit 130 includes a power source 131 and a transmission member 132. The transmission member 132 is transmission-connected to the linkage shaft 120. The power source 131 is used to drive the linkage shaft 120 through the transmission member 132 to drive the two reciprocating shafts 111 to rotate synchronously. The reciprocating shaft 111 rotates so that the reciprocating member 112 reciprocates along the axial direction of the reciprocating shaft 111.

Since there are two reciprocating units 110, and the reciprocating shafts 111 of the two reciprocating units 110 are respectively connected to the two ends of the linkage shaft 120, and the transmission member 132 of the power unit 130 is in transmission connection with the linkage shaft 120. When the power source 131 drives the transmission member 132 to drive the linkage shaft 120 to rotate, the reciprocating shafts 111 at both ends can be driven to rotate at the same time. The reciprocating members 112 of the two reciprocating units 110 can be reciprocated simultaneously through one power source 131 and one linkage shaft 120, so that the reciprocating drive of the two components can be realized through the two reciprocating members 112, the transmission efficiency is better, and the transmission structure is more compact.

Specifically, the two reciprocating shafts 111 are coaxially arranged with the linkage shaft 120. By coaxially arranging the two reciprocating shafts 111 with the linkage shaft 120, the stability of the linkage shaft 120 driving the two reciprocating shafts 111 to rotate can be improved. In this embodiment, a single reciprocating shaft 111 is detachably connected to one end of the linkage shaft 120. Since the reciprocating member 112 can reciprocate relative to the reciprocating shaft 111, when the reciprocating shaft 111 is worn, it is convenient to replace the reciprocating shaft 111 relative to the linkage shaft 120. In another embodiment, the reciprocating shaft 111 can also be fixedly installed on the linkage shaft 120, or the reciprocating shaft 111 can also be integrally formed on the linkage shaft 120.

In one embodiment, the two reciprocating members 112 move toward or away from each other at the same time. Since the movement directions of the two reciprocating members 112 are always opposite, the reciprocating accelerations applied by the two reciprocating members 112 to the reciprocating shaft 111 and the linkage shaft 120 can offset each other, thereby reducing the vibration of the reciprocating power assembly 100 and ensuring the stability of the transmission.

In one embodiment, a reciprocating guide rail 113 with a closed curve track surrounding the axis of the reciprocating shaft 111 is provided on the reciprocating shaft 111, and the crests and troughs of the reciprocating guide rail 113 are arranged at intervals along the axis of the reciprocating shaft 111; the reciprocating member 112 is limited on the reciprocating guide rail 113 and can move on the reciprocating guide rail 113; the reciprocating shaft 111 rotates to drive the reciprocating member 112 to reciprocate along the axis direction of the reciprocating shaft 111 under the guidance of the reciprocating guide rail 113. The reciprocating guide rail 113 on the reciprocating shaft 111 is used to facilitate the purpose of driving the reciprocating member 112 to reciprocate along the reciprocating shaft 111.

During the reciprocating movement of the reciprocating member 112, the reciprocating shaft 111 rotates, and the reciprocating member 112 can reciprocate between the crests and the troughs under the guidance of the reciprocating guide rail 113 with a curved trajectory, thereby achieving the purpose of reciprocating the reciprocating member 112 along the axial direction of the reciprocating shaft 111, and then the rotational motion of the reciprocating shaft 111 is converted into the linear motion of the reciprocating member 112, and there will be no yaw and runout problems like the crank structure or the eccentric drive structure, and the working stability is better and the transmission stability is good.

In this embodiment, the two reciprocating shafts 111 are coaxially arranged with the linkage shaft 120, and the tracks of the reciprocating guide rails 113 on the two reciprocating shafts 111 are arranged in mirror symmetry with respect to the linkage shaft 120, so that the two reciprocating members 112 move toward or away from each other at the same time. By mirroring the reciprocating guide rails 113 on the two reciprocating shafts 111, it is convenient to realize the relative or opposite reciprocating movement of the two reciprocating members 112.

In another embodiment, a reciprocating guide rail 113 with a closed curve track surrounding the axis of the reciprocating shaft 111 may be provided on the inner wall of the reciprocating member 112, and a limiting structure is formed on the outer wall of the reciprocating shaft 111. The limiting structure is limited on the reciprocating guide rail 113 and can move on the reciprocating guide rail 113. As long as the reciprocating member 112 can reciprocate along the axis of the reciprocating shaft 111 through the rotation of the reciprocating shaft 111, it will be sufficient.

In one embodiment, the reciprocating guide rail 113 is a reciprocating groove, and the reciprocating member 112 includes a rolling body 114 and a reciprocating body 115. The reciprocating body 115 is sleeved on the reciprocating shaft 111. The rolling body 114 is arranged between the reciprocating body 115 and the reciprocating shaft 111 and is limited on the reciprocating body 115. The rolling body 114 is rollably arranged in the reciprocating groove. The reciprocating shaft 111 rotates so that the rolling body 114 drives the reciprocating body 115 to move on the reciprocating shaft 111. The reciprocating body 115 The reciprocating movement direction is consistent with the axial direction of the reciprocating shaft 111.

When the reciprocating shaft 111 rotates, the rolling body 114 can roll in the reciprocating groove, so that the rolling body 114 can move between the crests and troughs of the curved groove, so as to achieve the purpose of reciprocating movement of the rolling body 114 along the axial direction of the reciprocating shaft 111, so as to drive the reciprocating body 115 to reciprocate along the axial direction of the reciprocating shaft 111, and the rotational motion of the reciprocating shaft 111 is converted into the linear motion of the reciprocating body 115, and the work stability is better.

In another embodiment, the reciprocating guide rail 113 can also be a guide protrusion, which is a closed strip-shaped curved protrusion surrounding the axis of the reciprocating shaft 111, and the crests and troughs of the curved protrusion are arranged at intervals along the axis of the reciprocating shaft 111; the rolling body 114 is arranged on the guide protrusion and can move on the guide protrusion along the length direction.

In one embodiment, there are at least two reciprocating guide rails 113, each of which is arranged at intervals along the axis of the reciprocating shaft 111, and each reciprocating guide rail 113 is provided with at least one rolling body 114. By providing at least two reciprocating guide rails 113, the stability of the reciprocating body 115 driven by the rolling body 114 can be improved.

In this embodiment, the number of rolling bodies 114 provided on a reciprocating guide rail 113 is at least two, and each rolling body 114 is arranged at intervals around the axis of the reciprocating shaft 111, and the reciprocating shaft 111 can drive each rolling body 114 on the reciprocating shaft 111 to move in the same direction. Specifically, there are two rolling bodies 114, and the two rolling bodies 114 are symmetrically arranged around the axis of the reciprocating shaft 111. When the reciprocating shaft 111 rotates, it can drive the two rolling bodies 114 to move in the same direction, and the two rolling bodies 114 are both limited on the reciprocating body 115. The stability of the transmission can be further improved by two rolling bodies 114. In other embodiments, the number of rolling bodies 114 can also be one, three, or other numbers.

In one embodiment, the rolling body 114 is a sphere, and the rolling body 114 can roll in the reciprocating groove. By setting the rolling body 114 as a sphere, the friction force of the rolling body 114 when moving can be reduced.

In one embodiment, the reciprocating member 112 further includes a matching sleeve 116, which is sleeved on the rolling element 114. The reciprocating shaft 111 is mounted on the reciprocating shaft 115. A plurality of rolling balls 117 are arranged between the rolling body 114 and the inner wall of the matching sleeve 116. The rolling body 114 is a sphere and can roll relative to the matching sleeve 116. Specifically, the plurality of balls 117 abut against the side of the rolling body 114 that is away from the reciprocating shaft 111. When the rolling body 114 rolls relative to the matching sleeve 116, the plurality of balls 117 facilitates further reducing the rolling friction, improving the smoothness of the rolling of the rolling body 114, and ensuring the stability of the transmission.

1 and 2, in one embodiment, the transmission member 132 includes a first transmission wheel 133 and a second transmission wheel 134, the first transmission wheel 133 is sleeved on the linkage shaft 120 and is located between the two reciprocating shafts 111, the second transmission wheel 134 is transmission-coordinated with the first transmission wheel 133, and the second transmission wheel 134 is transmission-connected to the power source 131. The first transmission wheel 133 and the second transmission wheel 134 further facilitate the power source 131 to drive the linkage shaft 120 to rotate in the radial direction of the linkage shaft 120.

Specifically, the power source 131 is a motor, which is located between the two reciprocating shafts 111, and the axis of the output shaft of the motor is perpendicular to the axis of the linkage shaft 120, and the second transmission wheel 134 is connected to the output shaft of the motor. The motor is located on one side of the radial direction of the linkage shaft 120, which is conducive to realizing that both ends of the linkage shaft 120 drive the two reciprocating shafts 111 to rotate at the same time, and makes the structure more compact.

Referring to Fig. 4, in one embodiment, the first transmission wheel 133 is a bevel gear, and the second transmission wheel 134 is a bevel gear. The power source 131 drives the second transmission wheel 134 to rotate, and the first transmission wheel 133 and the second transmission wheel 134 are meshed to change the direction of the output shaft of the power source 131 to drive the linkage shaft 120 to rotate.

1 and 2 , in one embodiment, the first transmission wheel 133 and the second transmission wheel 134 are spur gears. The power source 131 can be connected to the second transmission wheel 134 through a bevel gear set, thereby facilitating the transmission of power from the power source 131 to the first transmission wheel 133 to drive the linkage shaft 120 to rotate.

In other embodiments, the power source 131 can also drive the linkage shaft 120 through other structural forms of transmission members 132, as long as the power source 131 can drive the linkage shaft 120 to rotate in the radial direction of the linkage shaft 120. In other embodiments, the axis of the output shaft of the power source 131 can also be connected to the linkage shaft 120. The axis of 120 is parallel.

In one embodiment, there are two linkage shafts 120, and both ends of each linkage shaft 120 are respectively connected to a reciprocating shaft 111 of a reciprocating unit 110, and the two linkage shafts 120 are connected by a transmission member 132. The power source 131 is used to drive the two linkage shafts 120 to rotate synchronously through the transmission member 132. By setting two linkage shafts 120 to be connected by a transmission member 132, it is possible to facilitate the synchronous reciprocating movement of four reciprocating members 112 at the same time, thereby further improving the transmission efficiency.

Specifically, the transmission member 132 may be a gear transmission group, as long as it can achieve the goal of simultaneously driving the two linkage shafts 120 to rotate synchronously through the power source 131 .

Referring to FIG. 1 and FIG. 6 , in one embodiment, the reciprocating power assembly 100 further includes a transmission housing 140, in which the transmission member 132 and the linkage shaft 120 are disposed, and linkage holes are respectively provided on opposite side walls of the transmission housing 140; opposite ends of the linkage shaft 120 respectively pass through the two linkage holes. By providing the transmission housing 140, the reliability of the connection between the transmission member 132 and the linkage shaft 120 can be effectively ensured, and the stability of the transmission of the transmission member 132 can be ensured.

In one embodiment, the reciprocating power assembly 100 further includes a reciprocating shell 150, the number of the reciprocating shells 150 is two, the two reciprocating units 110 are respectively arranged in the two reciprocating shells 150, a first guide structure 151 is arranged in the reciprocating shell 150, a second guide structure 118 is arranged on the reciprocating member 112, and the first guide structure 151 and the second guide structure 118 are guided and matched along the axial direction of the reciprocating shaft 111. Through the cooperation of the first guide structure 151 and the second guide structure 118, the reliability of the reciprocating member 112 moving along the axial direction of the reciprocating shaft 111 is further guaranteed.

Specifically, the two reciprocating shells 150 are respectively disposed on the transmission shell 140 , so that the two linkage holes are respectively connected to the two reciprocating shells 150 , and the opposite ends of the linkage shaft 120 pass through the two linkage holes and penetrate into the reciprocating shells 150 .

5 to 7, in one embodiment, the pump mechanism 10 includes a reciprocating motion The force assembly 100 and the pump assembly 200, the pump assembly 200 includes a pump body 210 and a plunger 220, a volume chamber 211 is formed in the pump body 210, and a first channel 212 and a second channel 213 communicating with the volume chamber 211 are formed on the outer wall of the pump body 210; the plunger 220 is connected to the reciprocating member 112, and the reciprocating member 112 can drive the plunger 220 to reciprocate in the volume chamber 211, so that the fluid can be sucked into the volume chamber 211 from the first channel 212 and discharged from the second channel 213. When the reciprocating member 112 drives the plunger 220 to reciprocate, the fluid is sucked into the volume chamber 211 from the first channel 212 and discharged from the second channel 213, which can ensure the stability of the reciprocating direction of the plunger 220, and further ensure the stability of the fluid pumping in and out.

In one embodiment, the plunger 220 includes a connecting rod 221 and a piston body 222. The piston body 222 is connected to the reciprocating member 112 through the connecting rod 221. The piston body 222 is located in the volume chamber 211 and can reciprocate in the volume chamber 211. Specifically, the piston body 222 divides the volume chamber 211 into two compression spaces; there are two first channels 212 and two second channels 213, and the two first channels 212 are respectively connected to the two compression spaces, and the two second channels 213 are respectively connected to the two compression spaces.

In the process of the connecting rod 221 driving the piston body 222 to move back and forth, the sizes of the two compression spaces can be cyclically changed. For example, when the piston body 222 moves toward and compresses one compression space, the fluid in the compression space can be pumped out through the second channel 213 connected to the compression space; and the volume of the other compression space increases, so that the fluid is pumped into the compression space through the first channel 212 connected to the compression space, and the piston body 222 further moves and compresses the compression space, so that the fluid is pumped out through the second channel 213 connected to the compression space, and this cycle is repeated to achieve the effect of a double-acting pump.

In another embodiment, the plunger 220 is disposed in the volume chamber 211, and a compression space is formed only on the side of the plunger 220 facing away from the reciprocating member 112. There is only one compression space, and the first channel 212 and the second channel 213 are connected to the compression space to achieve the effect of a single-acting pump.

In this embodiment, one-way valves are disposed in both the first channel 212 and the second channel 213 to ensure the flow direction of the fluid during the pumping process.

In one embodiment, since the number of the reciprocating units 110 of the reciprocating power assembly 100 is two, the number of the pump assemblies 200 is two, and the plunger 220 of each pump assembly 200 is connected to the reciprocating member 112 of a reciprocating unit 110, and the two reciprocating members 112 respectively drive the two plungers 220 to move toward or away from each other. By setting two pump assemblies 200 to be connected with the two reciprocating units 110, the efficiency of the pump fluid can be effectively improved, and the structure of the whole machine can be made more compact. At the same time, since the two reciprocating members 112 drive the two plungers 220 to move toward or away from each other, the plungers 220 of the two pump assemblies 200 move in opposite directions, which can offset the reciprocating acceleration and greatly reduce the vibration of the entire pump mechanism 10. When the two plungers 220 move toward or away from each other, the pumping process of the two pump assemblies 200 is consistent, that is, the two pump assemblies 200 can simultaneously take in liquid and pump out liquid, thereby increasing the pumping flow rate of the entire pump mechanism 10.

In another embodiment, the two reciprocating members 112 may respectively drive the two plungers 220 to move in the same direction. The pumping progress of the two pump assemblies 200 may be inconsistent, that is, one of the two pump assemblies 200 is pumping liquid while the other is pumping liquid out, so as to achieve the purpose of uninterrupted pumping.

In one embodiment, the pump mechanism 10 further includes a liquid inlet connecting pipe 300, one end of which is connected to the first channel 212 of one pump assembly 200, and the other end of which is connected to the first channel 212 of another pump assembly 200, and a liquid inlet port 310 is formed on the liquid inlet connecting pipe 300. Since the pump mechanism 10 includes two pump assemblies 200, the liquid inlet connecting pipe 300 is provided to facilitate liquid inlet to the two pump assemblies 200 through one liquid inlet port.

In one embodiment, the pump mechanism 10 further includes a liquid outlet connecting pipe 400, one end of which is connected to the second channel 213 of one pump assembly 200, and the other end of which is connected to the second channel 213 of another pump assembly 200, and a liquid outlet 410 is formed on the liquid outlet connecting pipe 400. By providing the liquid outlet connecting pipe 400, it is possible to facilitate the discharge of liquid from two pump assemblies 200 through one liquid outlet 410.

In one embodiment, the pump mechanism 10 in any of the above embodiments is a plunger 220 pump. Specifically, the pump mechanism 10 is a plunger 220 pump, a cleaning machine, a sprayer or a hydraulic pump. In one embodiment, the pump mechanism 10 in any of the above embodiments can also be an electric diaphragm pump or a booster pump.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those skilled in the art, it can be understood in a broad sense according to the specific situation. Please understand the specific meaning of the above terms in this utility model.

In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

A reciprocating power assembly, characterized in that the reciprocating power assembly comprises:

A reciprocating unit, the reciprocating unit comprising a reciprocating shaft and a reciprocating member, the reciprocating shaft being provided with a reciprocating guide rail having a closed curved track surrounding the axis of the reciprocating shaft, and the crests and troughs of the reciprocating guide rail being arranged at intervals along the axis of the reciprocating shaft; the reciprocating member being limited on the reciprocating guide rail and being able to move on the reciprocating guide rail; the number of the reciprocating units being two;

A linkage shaft, the two opposite ends of which are respectively connected to one of the reciprocating shafts; and

A power unit, the power unit includes a power source and a transmission member, the transmission member is connected to the linkage shaft, the power source is used to drive the linkage shaft through the transmission member to drive the two reciprocating shafts to rotate synchronously, the reciprocating shaft rotates to drive the reciprocating member to reciprocate along the axial direction of the reciprocating shaft under the guidance of the reciprocating guide rail.
The reciprocating power assembly according to claim 1 is characterized in that the two reciprocating shafts are coaxially arranged with the linkage shaft, and the trajectories of the reciprocating guide rails on the two reciprocating shafts are mirror-symmetrically arranged relative to the linkage shaft so that the two reciprocating parts move toward or away from each other at the same time.
The reciprocating power assembly according to claim 2 is characterized in that the reciprocating guide rail is a reciprocating groove, the reciprocating member includes a rolling body and a reciprocating body, the reciprocating body is sleeved on the reciprocating shaft, the rolling body is arranged between the reciprocating body and the reciprocating shaft and is limited on the reciprocating body, the rolling body is rollably arranged in the reciprocating groove, the reciprocating shaft rotates so that the rolling body drives the reciprocating body to move on the reciprocating shaft, and the reciprocating movement direction of the reciprocating body is consistent with the axial direction of the reciprocating shaft.
The reciprocating power assembly according to any one of claims 1 to 3 is characterized in that the transmission member includes a first transmission wheel and a second transmission wheel, the first transmission wheel is sleeved on the linkage shaft and located between the two reciprocating shafts, the second transmission wheel is transmission-coordinated with the first transmission wheel, and the second transmission wheel is transmission-connected to the power source.
The reciprocating power assembly according to claim 4 is characterized in that the power source is a motor, the motor is located between the two reciprocating shafts, the axis of the output shaft of the motor is perpendicular to the axis of the linkage shaft, and the second transmission wheel is drivingly connected to the output shaft of the motor.
The reciprocating power assembly according to claim 4 is characterized in that it also includes a transmission shell, the transmission member and the linkage shaft are arranged in the transmission shell, and linkage holes are respectively opened on the opposite side walls of the transmission shell;

It also includes a reciprocating shell, and the number of the reciprocating shells is two. The two reciprocating shells are respectively arranged on the transmission shell, so that the two linkage holes are respectively connected to the two reciprocating shells, and the two reciprocating units are respectively arranged in the two reciprocating shells. The opposite ends of the linkage shaft respectively pass through the two linkage holes and penetrate into the reciprocating shells; a first guide structure is arranged in the reciprocating shell, and a second guide structure is arranged on the reciprocating member. The first guide structure and the second guide structure are guided and matched along the axial direction of the reciprocating shaft.
The reciprocating power assembly according to claim 4 is characterized in that there are two linkage shafts, both ends of each linkage shaft are respectively connected to the reciprocating shaft of the reciprocating unit, the two linkage shafts are connected through the transmission member, and the power source is used to drive the two linkage shafts to rotate synchronously through the transmission member.
A pump mechanism, characterized in that the pump mechanism comprises:

A pump assembly, the pump assembly comprising a pump body and a plunger, the pump body having a volume cavity formed therein, and an outer wall of the pump body having a first channel and a second channel communicating with the volume cavity formed therein; and

According to the reciprocating power assembly as described in any one of claims 1 to 7, the plunger is connected to the reciprocating member, and the reciprocating member can drive the plunger to reciprocate in the volume chamber so that the fluid can be sucked into the volume chamber from the first channel and discharged from the second channel.
The pump mechanism according to claim 8, characterized in that the number of the pump assemblies is two, The plunger of each pump assembly is connected to a reciprocating member of the reciprocating unit, and the two reciprocating members respectively drive the two plungers to move toward or away from each other, or the two reciprocating members respectively drive the two plungers to move in the same direction.
The pump mechanism according to claim 9 is characterized in that it further comprises a liquid inlet connecting pipe, one end of which is connected to the first channel of one pump component, and the other end is connected to the first channel of another pump component, and a liquid inlet port is formed on the liquid inlet connecting pipe; and/or

It also includes a liquid outlet connecting pipe, one end of which is connected to the second channel of one pump component, and the other end is connected to the second channel of another pump component, and a liquid outlet is formed on the liquid outlet connecting pipe.