WO2016026397A1

WO2016026397A1 - Gas inlet valve and energy-saving gas inlet system

Info

Publication number: WO2016026397A1
Application number: PCT/CN2015/086607
Authority: WO
Inventors: 干平; 曾培
Original assignee: 干平
Priority date: 2014-08-19
Filing date: 2015-08-11
Publication date: 2016-02-25
Also published as: CN104315198B; CN104315198A

Abstract

A gas inlet valve is provided. The gas inlet valve comprises a valve body (1) and a valve core (2) arranged in the valve body (1). The valve body (1) comprises a cylindrical body (11), a first sealing cover (12) and a second sealing cover (13). The first sealing cover (12) and the second sealing cover (13) are respectively fixed on the two ends of the cylindrical body (11). The cylindrical body (11) is provided with a first gas inlet (111), a first gas outlet (1141) and a second gas outlet (1142), and the first gas outlet (1141) is arranged opposite the second gas outlet (1142). The valve body (1) is also provided with a first gas escape opening (1121) and a first gas return opening (1122). The first sealing cover (12) is provided with a first adjusting gas opening (121). The valve core (2) can perform piston movement in the cylindrical body (11), and the valve core (2) is provided with a first passage only communicated with the first gas inlet (111), the first gas outlet (1141) and the second gas outlet (1142) when the valve is open. When the valve is close, the first passage is capable of communicating with the first gas escape opening (1121) and the first gas return opening (1122). A reset device is arranged between the end of the valve core (2) adjacent to the second sealing cover (13) and the second sealing cover (13). That the deflection of the valve core occurs during the suction process and consequently the valve core is hindered from moving smoothly in the valve body is avoided. An energy-saving gas inlet system is also provided.

Description

Intake valve and energy-saving intake system

Technical field

The invention relates to the field of equipment gas transmission, and in particular to a valve technology.

Background technique

At present, the power source of a large number of devices is gas, so the use of gas valves is very extensive. In order to increase the gas pressure in the gas equipment, it is often necessary to compress the gas in the air compressor before transferring it to the gas equipment. The air compressor draws air from the air outlet of the valve. When inhaling, the valve core is also sucked against the inner wall of the valve body, which affects the normal opening and closing of the valve. In addition, the existing gas transmission equipment can not effectively consider the actual amount of gas equipment, and can not control the degree of switching of the valve according to the actual gas consumption, which is not conducive to energy efficiency.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a valve which can automatically adjust the degree of opening and closing of a valve in accordance with the amount of gas used.

According to an aspect of the present invention, an intake valve is provided, including a valve body, a valve body disposed in the valve body, wherein the valve body includes a cylindrical body, a first cover and a second cover, the first cover and the first cover The second cover is respectively fixed to the two ends of the cylindrical body; the first air inlet, the first air outlet and the second air outlet are opened on the tubular body, and the first air outlet is opposite to the second air outlet; the valve body The first air outlet hole and the first air return hole are further provided; the first cover is provided with a first adjusting air hole; the valve core can be used for piston movement in the cylindrical body; and the valve core is open to connect only the first air inlet when the valve is opened a first passage of the port and the first air outlet and the second air outlet; the first passage can communicate with the first air outlet and the first air return hole when the valve is closed; the valve core is adjacent to the one end and the second end of the second cover A reset device is provided between the covers. This design provides two opposite air outlets. When the air compressor inhales, the air is sucked from the first air outlet and the second air outlet simultaneously, so that the force on the spool is balanced with each other to avoid inhalation. As a result, the spool is displaced, which causes the spool to have excessive frictional resistance to the inner wall of the valve body, thereby hindering the smooth movement of the spool in the valve body.

In some embodiments, the reset device is a spring, and one end of the spring is adjacent to the second core of the valve core One end of the cover abuts and the other end abuts the second cover. In this design, when the spring is fatigued, it is convenient to replace the reset device. In addition, the use of a spring as a reset device makes the movement of the spool more sensitive.

In some embodiments, the resetting device includes a first magnet disposed at an end of the valve core adjacent to the second cover and a second magnet disposed on a side of the second cover adjacent to the spool; the first magnet and The second magnets are disposed opposite to each other. This design utilizes the principle that the magnet is repelled by the same pole, and the use of the magnet as a reset device prolongs the service life of the reset device in a humid environment.

In some embodiments, the first passage is a first through groove that is circumferentially opened on the spool. This design provides more room for airflow. In addition, the passage of air is not affected when the spool is rotated.

In some embodiments, the first passage is a first passage that opens radially on the spool. This design allows the airflow to pass unobstructed and the flow rate is faster.

In some embodiments, the tubular body is further provided with a second air vent and a second air return hole; and the valve core is further provided with a second passage connecting the second air vent and the second air return hole only when the valve is closed. When the valve is closed, if the gas in the gas tank is still "supply exceeds demand", the excess gas can be returned to the first air inlet through the second air vent and the second air return hole to avoid long-term high pressure in the gas tank.

In some embodiments, the second passage is a second through groove that is circumferentially opened on the spool. This design provides more room for airflow. In addition, the passage of air is not affected when the spool is rotated.

In some embodiments, the second passage is a second passage that is radially open on the spool. This design allows the airflow to pass unobstructed and the flow rate is faster.

In some embodiments, the second cover is provided with a sliding air vent. Since the outer circumferential direction of the valve core is in close contact with the inner wall of the cylindrical body, a closed space is formed between the valve core and the second cover. When the valve core moves in the valve body, the air in the closed space may hinder the valve core. mobile. After the sliding air hole is set, this closed space is the same as the outside, and the amount of air in the closed space can be automatically adjusted.

According to another aspect of the present invention, there is also provided an energy-saving intake system using the above-described intake valve, including an intake valve, an inverse proportional valve, an air compressor, and a gas cylinder, wherein the air compressor is provided with an intake port and a third outlet a gas port and a first exhaust port disposed between the suction port and the third air outlet; the gas tank is provided with a second air inlet, a second air outlet, a second adjusting air hole, and a fourth air outlet; the intake valve The first air outlet and the second air outlet are both connected to the air inlet, and the third air outlet is in communication with the second air inlet; the first air outlet is in communication with the first air return hole, and the first air outlet is connected to the air inlet. Second adjustment The air hole communicates with the first adjusting air hole through the inverse proportional valve; the second exhaust port communicates with the second air receiving hole; and the second air return hole communicates with the first air inlet. The system can automatically adjust the opening and closing and opening of the valve according to the amount of gas used by the gas equipment, thereby avoiding waste of resources.

DRAWINGS

1 is a schematic cross-sectional view showing an open state of a first embodiment of an intake valve;

Figure 2 is a schematic cross-sectional view showing the closed state of the first embodiment of the intake valve;

Figure 3 is a schematic cross-sectional view showing the second embodiment of the intake valve in an open state;

Figure 4 is a cross-sectional view taken along line B-B of Figure 1;

Figure 5 is a perspective view of an embodiment of a spool;

Figure 6 is a perspective view of another embodiment of the spool;

Figure 7 is a cross-sectional view taken along line A-A of Figure 5;

Figure 8 is a schematic view of the assembly of the energy-saving intake system.

detailed description

The invention will now be described in further detail with reference to the drawings of the specification.

As shown in FIGS. 1 to 4, the intake valve includes a valve body 1, a valve body 2 disposed in the valve body 1, wherein the valve body 1 includes a cylindrical body 11, a first cover 12, and a second cover 13 The first cover 12 and the second cover 13 are respectively fixed to both ends of the cylindrical body 11 by welding or integral molding; the first air inlet 111 and the first air outlet 1141 are opened on the cylindrical body 11 And the second air outlet 1142, the first air outlet 1141 and the second air outlet 1142 are oppositely disposed; the valve body 1 is further provided with a first air hole 1121, a first air return hole 1122; the first cover 12 is provided with a first adjusting air hole 121.

It should be noted that the cylindrical body 11 refers to a cylindrical body having a uniform thickness inside, and its cross-sectional shape may be a circular shape or other geometric shapes. The first cover 12 and the second cover 13 may be planar or spherical. Wherein, the first cover 12 functions to completely block one end of the cylindrical body 11, and the second cover 13 functions to fix the reset device, and therefore, the second cover 13 does not necessarily completely seal the cylindrical body 11 The other end can be provided as long as it can provide a boss for a fixed reset device.

As shown in FIG. 4, the cylindrical body 11 is provided with a first air inlet 111, a first air outlet 1141, and a second air outlet 1142. The first air outlet 1141 is opposite to the second air outlet 1142. Here, the "relative arrangement" is structurally realized in that the central axis of the first air outlet 1141 is in line with the central axis of the second air outlet 1142, and the function is to ensure that the air compressor passes through the first air outlet. When the 1141 and the second air outlet 1142 are inhaled, the suction force of the two air outlets to the valve core 2 is in a straight line, and the directions are opposite, so that the valve core 2 is not attracted to the cylinder due to the suction force of the air compressor. On the inner wall of the body 11.

As shown in FIG. 1 , the valve body 1 is further provided with a first air venting hole 1121 , a first air return hole 1122 , a second air venting hole 1131 , and a second air return hole 1132 . The first air venting hole 1121, the first air venting hole 1122, the second air venting hole 1131, and the second air venting hole 1132 are all through holes penetrating in the side wall of the cylindrical body 11. The first cover 12 is provided with a first permeable aperture 121 that is transparent.

The valve body 2 in the present invention can perform piston movement in the cylindrical body 11, in other words, the valve body 2 can move in the axial direction of the cylindrical body 11 in the axial direction, and the side wall of the cylindrical body 11 and The inner wall of the cylindrical body 11 is kept free from passing air. Therefore, an elastic sealing layer can be laid on the inner wall of the cylindrical body 11 or the side wall of the valve body 2, which does not affect the movement of the valve body 2, and can make the side wall of the valve body 2 and the inner wall of the cylindrical body 11 as much as possible. Close to the ground.

The spool 2 is provided with a first passage that communicates only the first intake port 111 and the first air outlet 1141 and the second air outlet 1142 when the valve is opened. In addition, the first passage can communicate with the first escape hole 1121 and the first return air hole 1122 when the valve is closed.

It should be noted that the foregoing “valve when the valve is opened” includes both the state in which the valve is fully opened and the state in which the valve is gradually opened; the aforementioned “closed valve” includes both the state in which the valve is completely closed, and the process in which the valve is gradually closed. status.

In other words, when the valve is fully opened, the first air inlet 111 and the first air outlet 1141 and the second air outlet 1142 are completely communicated through the first passage; at this time, the spool 2 blocks the first air outlet 1121 and the first back The communication of the air holes 1122. During the gradual opening of the valve, the first passage gradually moves between the first intake port 111 and the first air outlet 1141 and the second air outlet 1142, the first air inlet 111 and the first air outlet 1141 and the second outlet. The port 1142 is changed from a completely blocked state to a gradually connected state.

In addition, when the valve is completely closed, the first passage is completely out of the first intake port 111 and the first air outlet 1141 and the second air outlet 1142, and the spool 2 blocks the communication between the three; A passage is located between the first escape hole 1121 and the first return hole 1122, and the first getter hole 1121 and the first return hole 1122 are communicated through the first passage.

In summary, the first passage serves to communicate the first air inlet 111 and the first air outlet 1141 and the second air outlet 1142 when the valve is opened; when the valve is closed, it is connected to the first air outlet 1121 and the first The function of the return air hole 1122.

It should be further noted that, as shown in FIG. 5, the first channel may be circumferentially on the spool 2 The first through slot 21 is opened.

As shown in FIG. 6 and FIG. 7, the first passage may also be a first passage 210 radially opened on the spool 2. Under such a scheme, as shown in FIG. 7, the cross section of the first passage 210 has an internal "⊥" shape or an internal communication "T" shape, and when the valve is fully opened, when it is in a "⊥" shape, The upper end of the first passage 210 is completely in communication with the first air inlet 111, and the two sides of the lower end are completely in communication with the first air outlet 1141 and the second air outlet 1142 respectively; when the valve is completely closed, the first passage 210 is completely connected to the first escape The air hole 1121 and the first air return hole 1122.

A reset device is disposed between the one end of the valve body 2 adjacent to the second cover 13 and the second cover 13 to form a thrust force on the spool 2 when the valve is closed. There are various ways to set the reset device. For example, as shown in FIGS. 1 and 2, the resetting means may be a spring 31 having one end abutting against one end of the valve body 2 adjacent to the second cover 13, and the other end abutting against the second cover 13.

In addition, as shown in FIG. 3, the resetting device includes a first magnet 321 and a second magnet 322 which are disposed opposite to each other. The first magnet 321 is fixed to one end of the valve core 2 near the second cover 13 by means of pasting or inlaying, and the second magnet 322 is fixed to the second cover 13 near the valve core 2 by pasting or inlaying. One side. It should be noted that the foregoing "coherent phase setting" in this paragraph includes the following two aspects: First, the first magnet 321 and the second magnet 322 are parallel to each other, and from the vertical projection of the two on the second cover 13 It can be seen that the centers of the two are substantially coincident; secondly, the faces of the first magnet 321 and the second magnet 322 are either S poles or N poles.

Since the outer circumferential direction of the spool 2 is in close contact with the inner wall of the cylindrical body 11, when the second cover 13 completely closes the end of the cylindrical body 11, the sealing between the valve body 2 and the second cover 13 is formed. Space, and the amount of air in this confined space is constant. When the spool 2 moves in the direction of the first cover 12 in the valve body 1, the air in the closed space generates a negative pressure on the movement of the spool 2, and when the spool 2 moves in the direction of the second cover 13, this The air in the confined space creates a positive pressure on the movement of the spool 2. Therefore, if the volume of air in this confined space cannot be adjusted at any time, the normal movement of the spool 2 is hindered. In view of this, a sliding air vent 131 can be formed in the second cover 13. When the spool 2 moves toward the first cover 12, external air is sucked into the closed space from the sliding air vent 131, thereby avoiding the formation of a negative pressure; when the spool 2 moves toward the second cover 13 The air in this confined space is gradually extruded through the sliding air vent 131, avoiding the formation of positive pressure.

In addition, considering that when the gas is used to reduce the gas or stop the gas, if the gas pressure in the gas tank 6 is still high, the load on the device will be too large to start when it is restarted. . Therefore, it is necessary In this case, the excess gas in the gas tank 6 is released.

In view of this, the tubular body 11 is further provided with a second air venting hole 1131 and a second air returning hole 1132. The valve core 2 is further provided with a second communicating air venting hole 1131 and a second air returning hole 1132 only when the valve is completely closed. Two channels. Specifically, when the valve is fully opened, the second passage is completely out of the second escape hole 1131 and the second return air hole 1132, and the second escape hole 1131 and the second return air hole 1132 are completely separated from the spool 2; When fully closed, the second escape hole 1131 and the second return hole 1132 are completely communicated through the second passage.

Like the first passage, as shown in FIG. 5, the second passage may be a second escape through-groove 22 that is circumferentially opened on the spool 2. It should be noted that the first through groove 21 and the second escape through groove 22 are not necessarily completely 360 degrees circumferentially of the complete annular valve core 2, as long as the corresponding through holes can be satisfied.

As shown in FIG. 6, the second passage may also be a second escape passage 220 that is radially opened on the spool 2.

As shown in FIG. 8, the present invention also provides an energy-saving intake system using the above-described intake valve, including an intake valve 100, an inverse proportional valve 3, an air compressor 5, and a gas cylinder 6. Wherein, the wall portion of the air compressor 5 is provided with an air inlet 51 and a third air outlet 52, and a first exhaust port 53 between the air inlet 51 and the third air outlet 52; The second intake port 61, the second exhaust port 63, the second adjustment air hole 62, and the fourth air outlet 64.

Specifically, the first air outlet 1141 and the second air outlet 1142 of the intake valve 100 are directly connected to the air inlet 51 or connected through a connecting gas pipeline. The first exhaust port 53 is directly connected to the first air return hole 1122 or communicates with the air supply duct. The third air outlet 52 is directly connected to the second air inlet 61 or communicates through the air supply duct. The second exhaust port 63 is directly connected to the second air release hole 1131 or communicates with the air supply duct. The second adjusting air hole 62 is directly connected to the first adjusting air hole 121 through the inverse proportional valve 3 or communicates through the connecting gas pipeline. It should be noted that the intake end of the inverse proportional valve 3 is in communication with the second regulating air hole 62, and the air outlet end of the inverse proportional valve 3 is in communication with the first regulating air hole 121.

In actual use, the first air inlet 111 is directly connected to the external air source 4 or connected through the connecting gas pipeline. In order to ensure the purity of the air input to the first air inlet 111, the first air inlet 111 may also be in the first air inlet 111. An air filter element 41 is provided between the external air source 4. The second return air hole 1132 is directly connected to the external air source or communicates with the first air inlet through the connecting gas pipeline. The fourth air outlet 64 is in communication with the air supply device 7.

It is assumed that there is no gas before the entire energy-saving intake system is running, and at this time, the valve is in a closed state, and the gas of part of the external air source 4 enters the intake valve 100 from the first intake port 111. Empty After the gas compressor 5 is started, the gas from the external air source 4 is absorbed through the first air outlet 1141 and the second air outlet 1142, and compression is started. The compressed gas flows to the gas cylinder 6, and the inner body of the gas tank 6 flows to the gas-using device 7 again. At this time, the air compressor 5 is always working. When the gas-using equipment is not in need of gas or the gas consumption is reduced, the gas embodied in the gas tank 6 is no longer entered into the gas-using equipment. At this time, as the air compressor 5 continues to operate, the gas inside the gas tank 6 appears. Supply is greater than necessary." The air pressure in the gas tank 6 is getting higher and higher, and a large amount of gas flows from the second regulating air hole 62 to the first adjusting air hole 121 through the inverse proportional valve 3, but according to the working principle of the inverse proportional valve, the air pressure in the gas tank 6 is higher. The less gas enters between the first cover 12 and the spool 2. Then, under the action of the restoring force of the resetting device, the spool 2 gradually moves the spool 2 toward the first cover 12, gradually closing the valve. When the valve is completely closed, the second air hole 1131 and the second air return hole 1132 are connected, and the excess gas in the gas tank 6 flows back to the external air source 4 through the second air hole 1131 and the second air return hole 1132, thereby reducing the gas. The air pressure in the tank 6 avoids waste of resources and also avoids long-term high pressure in the gas tank 6. In addition, when the valve is gradually closed, the first air venting hole 1121 and the first air venting hole 1122 are gradually connected, and the excess gas to be compressed in the air compressor 5 flows back to the air inlet through the first air venting hole 1122 and the first air venting hole 1121. 51, to achieve the loop. At the same time, the situation that the demand for the compression ratio of the air compressor 5 is lowered due to the decrease in the amount of gas used by the gas-using equipment 7 is accommodated.

When the amount of gas used in the gas-using device 7 rises, the gas in the gas tank 6 is "supplied less than necessary", and the gas pressure in the gas tank 6 is lowered, causing the gas pressure to the inverse proportional valve 3 to also decrease. At this time, according to the working principle of the inverse proportional valve, the amount of air entering the first cover 12 and the spool 2 from the inverse proportional valve 3 rises, directly causing the air pressure of the closed space between the first cover 12 and the spool 2 to rise. . Further, the push valve body 2 is moved in the direction of the second cover 13 to gradually open the intake valve 100, and the gas of the external air source 4 is sucked into the air compressor 5, thereby increasing the amount of gas supplied to the air tank 6.

It should be emphasized that the above changes in the working state are only a description of the working principle of the system. In fact, the intake valve 100 in the present system is not in a fully open or fully closed state. The system can maintain a dynamic balance. When the amount of gas used by the gas device 7 changes, it is sensitively reflected to the inverse proportional valve 3, according to the change of the air pressure between the first cover 12 and the spool 2, and the restoring force of the reset device. The position of the spool 2 achieves a dynamic balance.

The above description is only a preferred mode of the present invention, and those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these should also be regarded as the protection scope of the present invention. Inside.

Claims

An intake valve, comprising: a valve body (1), a valve core (2) disposed in the valve body (1), wherein

The valve body (1) comprises a cylindrical body (11), a first cover (12) and a second cover (13), and the first cover (12) and the second cover (13) are respectively fixed The two ends of the cylindrical body (11); the cylindrical body (11) is provided with a first air inlet (111), a first air outlet (1141) and a second air outlet (1142), The first air outlet (1141) is opposite to the second air outlet (1142); the valve body (1) is further provided with a first air hole (1121) and a first air return hole (1122); The first cover (12) is provided with a first adjusting air hole (121);

The valve core (2) can perform piston movement in the cylindrical body (11); the valve core (2) is opened to communicate only the first air inlet (111) and the first outlet when the valve is opened a first port of the air port (1141) and the second air outlet (1142); the first channel can communicate with the first air hole (1121) and the first air return hole (1122) when the valve is closed;

A reset device is disposed between the one end of the valve core (2) adjacent to the second cover (13) and the second cover (13).
The intake valve according to claim 1, wherein said resetting means is a spring (31), one end of said spring (31) and said valve core (2) being adjacent to said second cover (13) One end end abuts and the other end abuts the second cover (13).
The intake valve according to claim 1, wherein said resetting means comprises a first magnet (321) disposed at an end of said valve body (2) adjacent said second cover (13) And a second magnet (322) disposed on a side of the second cover (13) adjacent to the valve core (2); the first magnet (321) and the second magnet (322) are the same pole Opposite setting.
The intake valve according to any one of claims 1 to 3, characterized in that the first passage is a first through groove (21) which is circumferentially opened on the valve body (2).
The intake valve according to any one of claims 1 to 3, characterized in that the first passage is a first passage (210) radially opened on the spool (2).
The intake valve according to claim 1, wherein the cylindrical body (11) is further provided with a second air hole (1131) and a second air return hole (1132);

The valve core (2) is further provided with a second passage connecting the second air escape hole (1131) and the second air return hole (1132) only when the valve is closed.
The intake valve according to claim 6, wherein said second passage is a second through groove (22) that is circumferentially opened on said valve body (2).
The intake valve according to claim 6, wherein said second passage is a second passage (220) radially opened on said spool (2).
The intake valve according to any one of claims 1 to 4, characterized in that the second cover (13) is provided with a sliding air vent (131).
An energy-saving intake system including the intake valve according to any one of claims 6 to 8, characterized by comprising an intake valve (100), an inverse proportional valve (3), an air compressor (5), and a gas cylinder (6) ,among them,

The air compressor (5) is provided with an air inlet (51) and a third air outlet (52), and a first gap between the air inlet (51) and the third air outlet (52) An exhaust port (53); the gas tank (6) is provided with a second air inlet (61), a second exhaust port (63), a second adjusting air hole (62) and a fourth air outlet (64);

The first air outlet (1141) and the second air outlet (1142) of the intake valve (100) are both in communication with the air inlet (51), and the third air outlet (52) and the second air inlet a port (61) communicating; the first exhaust port (53) is in communication with the first air return hole (1122), and the first air hole (1121) is in communication with the air inlet (51); a second regulating air hole (62) is in communication with the first adjusting air hole (121) through the inverse proportional valve (3); the second exhaust port (63) is in communication with the second air receiving hole (1131); A secondary air vent (1132) is in communication with the first air inlet (111).