CN211145458U

CN211145458U - Linkage stop valve

Info

Publication number: CN211145458U
Application number: CN201922195195.0U
Authority: CN
Inventors: 王江山; 王江海; 黄昆; 许强
Original assignee: Ningbo Shanyan Hydraulic Co ltd
Current assignee: Ningbo Shanyan Hydraulic Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-07-31
Anticipated expiration: 2029-12-09

Abstract

The utility model relates to a linkage stop valve, include: the valve body is provided with a plurality of medium flow passages which are arranged at intervals; the valve core is arranged in a valve cavity correspondingly formed in the valve body and used for controlling the on-off of the medium flow passage; the valve cavity is an installation pore canal which penetrates through the valve body and is communicated with the plurality of medium flow passages, the valve core is a plunger body arranged in the installation pore canal, the plunger body comprises a plurality of ball valve sections with through holes and a plurality of sealing sections, each ball valve section and each sealing section are sequentially arranged at intervals along the axial direction of the plunger body, the through holes of the ball valve sections correspond to the medium flow passages, and the plunger body can rotate around the axis of the plunger body so as to disconnect the medium flow passages or communicate the medium flow passages through the through holes of the ball valve sections. The linkage stop valve is simple and compact in structure, convenient to assemble and flexible and convenient in action process when the valve core rotates.

Description

Linkage stop valve

Technical Field

The utility model relates to a control flap technical field especially relates to a linkage stop valve.

Background

The stop valve is characterized in that the valve is unblocked or blocked by the rotation of the valve core, the stop valve is mainly used for cutting off, distributing and changing the flowing direction of a medium in a pipeline, and the stop valve has the advantages of light and convenient opening and closing, reliable sealing, simple structure, convenient maintenance and the like, so the stop valve is widely applied to various industries in recent years. The on-off control in the fluid system in the prior art generally adopts a control valve to control the on-off of one path of fluid, and a plurality of control valves are driven by electric control, pneumatic control or manual operation to realize the on-off control of a plurality of fluid loops, thereby completing the control of a plurality of combinations.

In order to solve the technical problems, the application number CN201410447477.4 (No. CN104197037B) discloses a combined multi-station ball valve, which comprises a valve body, a ball valve core sealing element, a valve rod sealing element, a valve cover, a blank cap, a valve cover sealing element, a driving device and screws, and also comprises at least two ball valve cores and a middle valve rod with different flow channel types, wherein the valve body is provided with at least two four-way cavities, a through hole is arranged between the four-way cavities, the ball valve core is arranged in the four-way cavity of the valve body, the ball valve core sealing element is arranged between the ball valve core and the valve cover and the blank cap and is positioned on the flow channel opening of the ball valve core, the ball valve cores are connected through the middle valve rod, the middle valve rod is provided with the valve rod sealing element, the valve cover sealing element is arranged on the valve cover and the blank cap, and the valve, the valve rod is arranged at the upper end of the valve body, the lower end of the valve rod is connected with the upper end of the ball valve core arranged in the first four-way cavity of the valve body, and the driving device is connected with the upper end of the valve rod. The combined multi-station ball valve can replace a plurality of control valves to control the on-off of a plurality of paths of fluids, different on-off combinations are formed, the control complexity of a fluid loop is simplified, errors caused by manual operation are avoided, and the resource waste is reduced.

The valve structure in the patent has certain defects in actual use, firstly, the upper and lower adjacent spherical valve cores of the valve are connected through the middle valve rod, when the uppermost valve rod rotates, the upper valve core is driven to rotate, and the lower valve core is driven to move simultaneously through the middle valve rod, so that the valve structure has more parts, larger volume, more complex assembly process and higher production cost; secondly, this kind of modular multistation ball valve is through a plurality of valve rods transmission of going on in the axial, and then control a plurality of oil circuits and open and close, the valve is when opening, because there is the pressure differential in both ends around the valve port of each oil circuit, can lead to the upper and lower both ends of middle valve rod to take place certain slope with avoiding, two upper and lower spools and middle valve rod do not strictly lie in same axis like this, be unfavorable for transmitting moment in the axial between spool and the valve rod, can make the frictional force greatly increased between middle valve rod and the valve body, the action process that leads to the valve rod is comparatively hard, it is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a simple structure is compact, be convenient for assembly and the nimble linkage stop valve of action process.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a linked stop valve comprising:

the valve body is provided with a plurality of medium flow passages which are arranged at intervals;

the valve core is arranged in a valve cavity correspondingly formed in the valve body and used for controlling the on-off of the medium flow passage;

the valve cavity is an installation pore canal which penetrates through the valve body and is communicated with the plurality of medium flow passages, the valve core is a plunger body arranged in the installation pore canal, the plunger body comprises a plurality of ball valve sections with through holes and a plurality of sealing sections, each ball valve section and each sealing section are sequentially arranged at intervals along the axial direction of the plunger body, the through holes of the ball valve sections correspond to the medium flow passages, and the plunger body can rotate around the axis of the plunger body so as to disconnect the medium flow passages or communicate the medium flow passages through the through holes of the ball valve sections.

As an improvement, a first sealing ring and a second sealing ring which can be in sealing contact with the wall surface of the ball valve section are respectively arranged on the front side and the rear side of the ball valve section corresponding to the valve core in the medium flow passage. The valve core, the first sealing ring and the second sealing ring are adopted for soft sealing, and compared with the existing metal hard sealing mode of directly contacting the cylindrical valve core and the valve body, the sealing performance is better, and the leakage problem is not easy to occur.

In order to realize first sealing washer and second sealing washer rapid Assembly, simplify the installation, save manufacturing cost, still include detachably and connect inlet fitting in the medium runner of valve body and play liquid joint, inlet fitting's terminal surface with first sealing washer looks butt, go out liquid joint's terminal surface with second sealing washer looks butt.

As an improvement, a first elastic piece is further arranged between the end face of the liquid inlet joint and the first sealing ring, and a second elastic piece is arranged between the end face of the liquid outlet joint and the second sealing ring. The first sealing ring and the second sealing ring have certain floating spaces due to the structural arrangement, the positions of the first sealing ring and the second sealing ring can be automatically adjusted when the first sealing ring and the second sealing ring are in contact with the valve core, and the sealing reliability is improved.

In order to facilitate the arrangement of a first elastic piece and a second elastic piece, a first annular concave part is formed on the inner edge of the end face of the liquid inlet joint, and the first elastic piece is a first elastic ring arranged in the first annular concave part; and a second annular concave part is arranged on the inner edge of the end face of the liquid outlet joint, and the second elastic piece is a second elastic ring arranged in the second annular concave part.

As an improvement, the number of the medium flow passages is two, correspondingly, the plunger body comprises three sealing sections and two ball valve sections, the two ball valve sections respectively correspond to the two medium flow passages, and third sealing rings are arranged between the three sealing sections of the plunger body and the wall surface of the mounting hole channel. Of course, the medium flow channels may be provided with three or more than three to realize the control of a plurality of oil channels.

In order to enable the plunger body to be conveniently assembled into the mounting hole of the valve body, the cross sections of the three sealing sections of the plunger body are equal in area. With this arrangement, even if there is a pressure difference between the oil passages, the axial forces of the valve element cancel each other out, the frictional force is minimized, and the valve can be operated with a small torque at the time of opening and closing.

In order to axially position and lock the plunger body assembled in the mounting pore canal of the valve body, the lower end of the plunger body is exposed out of the lower wall surface of the valve body and is abutted against the lower wall surface of the valve body through a retaining ring correspondingly sleeved on the peripheral wall of the plunger body, the upper end of the plunger body is exposed out of the upper wall surface of the valve body and forms a driving part for a user to rotationally adjust, and the upper end of the plunger body is also provided with a blocking part for abutting against the upper wall surface of the valve body.

In order to enable the plunger body to conveniently and flexibly rotate to a corresponding position and realize accurate opening and closing actions of the valve, the blocking part is a blocking piece body which is in contact with the upper wall surface of the valve body in a fitting manner, and the valve body is further provided with a limiting pin which is used for limiting the blocking piece body to rotate between a first position and a second position.

As a modification, the included angle formed by the first position and the second position relative to the axis of the plunger body is 90 degrees. Of course, the rotation angle of the plunger body can be designed to be in the range of 45 degrees, 135 degrees, 180 degrees and the like and limited by the limit pin according to the arrangement condition of the medium flow channel and the corresponding structure of the valve core.

Compared with the prior art, the utility model has the advantages that: the valve core of the linkage stop valve in the utility model is a plunger body which comprises a plurality of ball valve sections with through holes and a plurality of sealing sections, the plunger body can disconnect the corresponding medium flow passage or connect the medium flow passage through the through holes of the ball valve sections in the process of rotating around the axis of the plunger body, the ball valve sections and the sealing sections are sequentially arranged at intervals along the axial direction of the plunger body, and a plurality of ball valve cores and valve rods in the prior art are designed into a plunger body structure, so that the structure of the valve cores is effectively simplified, the overall structure of the valve is more compact, the installation process of the valve is more convenient and quicker, on the other hand, when the driving valve core rotates, the arrangement of the plunger body structure is also favorable for the transmission of torque force in the axial direction, and the friction force among the spherical valve core, the valve rod and the valve body in the prior art is reduced, so that the action process of the valve core is more flexible and convenient.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of the present invention (the plunger body is omitted);

fig. 3 is a schematic structural diagram of an embodiment of the present invention (the plunger body, the first seal ring and the second seal ring are omitted);

fig. 4 is a schematic structural diagram of a valve core according to an embodiment of the present invention;

fig. 5 is a schematic top view of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 5, a linkage stop valve includes a valve body 10, a valve core 20, a liquid inlet connector 51 and a liquid outlet connector 52, the valve body 10 has a valve cavity and a plurality of medium flow channels 11 arranged at intervals, and the valve core 20 is arranged in the valve cavity on the valve body 10 for controlling the on-off of the corresponding medium flow channel 11.

Referring to fig. 2, a plurality of medium flow channels 11 in the present embodiment are arranged in parallel, specifically, two medium flow channels 11 in the present embodiment are provided, and the two medium flow channels 11 are arranged in parallel in the horizontal direction. The valve cavity is a mounting hole 30 penetrating the valve body 10, specifically, the mounting hole 30 is vertically arranged and communicates with the two medium flow passages 11, correspondingly, the valve core 20 is an integrally designed plunger body which is arranged in the mounting hole 30 of the valve body 10, and the plunger body can rotate around its own axis to disconnect the corresponding medium flow passage 11 or communicate the medium flow passage 11 through a through hole 210 of a ball valve section 21 described below.

Referring to fig. 4, the plunger body includes a plurality of ball valve sections 21 with through holes 210 and a plurality of sealing sections, each ball valve section 21 and each sealing section are sequentially arranged at intervals along the axial direction of the plunger body, the sealing section in this embodiment is cylindrical, the ball valve section 21 is spherical, wherein the through holes 210 of the ball valve section 21 correspond to the medium flow passages 11. Corresponding to the two medium flow passages 11, the plunger body in the present embodiment includes two ball valve sections 21 and three sealing sections, where the ball valve section 21 corresponds to the two medium flow passages 11, and the sealing sections are, from top to bottom, a first sealing section 22a, a second sealing section 22b, and a third sealing section 22 c.

With continued reference to fig. 4, third sealing rings 43 are provided between the three sealing sections of the plunger body and the wall surface of the mounting hole 30. Further, in order to enable the plunger body to be conveniently assembled in the mounting hole 30 of the valve body 10, the area of the first cross section S1 of the first sealing section 22a, the area of the second cross section S2 of the second sealing section 22b and the area of the third cross section S3 of the third sealing section 22c are equal, when pressure differences exist among a plurality of oil passages, because the sealing areas of the three sealing sections of the plunger body are equal, axial forces acting on the plunger body can be mutually counteracted, the friction force is minimized, and the plunger body can be driven to rotate by small torque during opening and closing.

Referring to fig. 1 and 5, the lower end of the plunger body is exposed out of the lower wall surface of the valve body 10 and abuts against the lower wall surface of the valve body 10 through a retaining ring 12 correspondingly sleeved on the outer peripheral wall thereof, and specifically, the outer peripheral wall of the lower end of the plunger body is provided with an annular retaining groove 23, and the retaining ring 12 is retained in the annular retaining groove 23. The lower wall surface of the valve body 10 is also correspondingly provided with an accommodating groove 16 for placing the check ring 12, and the check ring 12 is accommodated in the accommodating groove 16, so that the check ring 12 can be prevented from falling off when touching foreign objects.

The upper end of the plunger body is exposed out of the upper wall surface of the valve body 10 and forms a driving portion 13 for rotation adjustment by a user, and an external driving rod (not shown) may be connected to the driving portion 13 to drive the plunger body to rotate. The upper end of the plunger body is also provided with a blocking part 14 which is used for abutting against the upper wall surface of the valve body 10, and in order to ensure that the plunger body conveniently and flexibly rotates to a corresponding position and realize accurate opening and closing actions of the valve, the blocking part 14 is a blocking piece body which is in contact with the upper wall surface of the valve body 10 in an attaching mode.

When the plunger piston is assembled, the plunger piston can be directly assembled to the installation pore channel 30 of the valve body 10, when the plunger piston is assembled in place, the lower end of the plunger piston can be exposed out of the lower wall surface of the valve body 10, then the check ring 12 is clamped in the annular clamping groove 23 at the lower end of the plunger piston and is abutted to the lower wall surface of the valve body 10 through the check ring 12, the plunger piston is limited at the lower end, and similarly, the block piece body at the upper end of the plunger piston can be abutted to the upper wall surface of the valve body 10, and the upper end is limited.

Referring to fig. 5, the valve body 10 is further provided with a limit pin 15 for limiting the stopper body to rotate between the first position and the second position, specifically, in this embodiment, an included angle α formed by the first position and the second position with respect to the axis of the plunger body is 90 degrees, that is, the limit pin 15 can limit the rotation angle of the plunger body to 90 degrees.

Referring to fig. 1, the liquid inlet connector 51 and the liquid outlet connector 52 are detachably connected to the medium flow channel 11 of the valve body 10, specifically, in this embodiment, the liquid inlet connector 51 and the liquid outlet connector 52 are screwed into the corresponding medium channel, wherein external threads are provided on outer walls of the liquid inlet connector 51 and the liquid outlet connector 52, and internal threads are provided on an inner wall of the medium channel. In addition, fourth sealing rings 44 are provided between the liquid inlet joint 51 and the valve body 10 and between the liquid outlet joint 52 and the valve body 10, so as to prevent the liquid in the medium flow passage 11 from leaking at the joint position of the valve body 10 and the corresponding joint.

Referring to fig. 1, a first sealing ring 41 and a second sealing ring 42 capable of being in sealing contact with a wall surface of the ball valve section 21 are further respectively disposed on the front side and the rear side of the ball valve section 21 corresponding to the valve core 20 in the medium flow passage 11, and specifically, the first sealing ring 41 and the second sealing ring 42 are both sealing rings adapted to a spherical structure of the ball valve section 21. During the process of transferring, the first sealing ring 41 and the second sealing ring 42 can be directly installed into the two ports of the medium flow channel 11 and fitted on the wall of the ball valve section 21, then the corresponding liquid inlet joint 51 and the liquid outlet joint 52 are screwed on the valve body 10, after the liquid inlet joint 51 and the liquid outlet joint 52 are assembled in place, the end surface of the liquid inlet joint 51 can abut against the first sealing ring 41, and the end surface of the liquid outlet joint 52 abuts against the second sealing ring 42.

Referring to fig. 1, a first elastic member 53 is further disposed between the end surface of the liquid inlet joint 51 and the first sealing ring 41, and a second elastic member 54 is disposed between the end surface of the liquid outlet joint 52 and the second sealing ring 42. In order to facilitate the positioning of the first elastic member 53 and the second elastic member 54, a first annular recess 510 is formed on an inner edge of an end surface of the inlet connector 51, and the first elastic member 53 is a first elastic ring positioned in the first annular recess 510. The inner edge of the end surface of the liquid outlet joint 52 is provided with a second annular recess 520, and the second elastic element 54 is a second elastic ring arranged in the second annular recess 520. The first elastic member 53 and the second elastic member 54 are arranged to enable the first sealing ring 41 and the second sealing ring 42 to have a certain floating space, and the positions of the first sealing ring 41 and the second sealing ring 42 can be automatically adjusted when the first sealing ring and the second sealing ring are in contact with the valve core 20, so that the sealing reliability is improved.

The valve core 20 of the linkage stop valve in the embodiment is a plunger body which comprises a plurality of ball valve sections 21 with through holes 210 and a plurality of sealing sections, the plunger body can disconnect the corresponding medium flow passages 11 or connect the medium flow passages 11 through the through holes 210 of the ball valve sections 21 during the rotation process of the plunger body around the axis of the plunger body, the ball valve sections 21 and the sealing sections are sequentially arranged at intervals along the axial direction of the plunger body, and a plurality of ball valve cores and valve rods in the prior art are designed into a plunger body structure, so that the structure of the valve cores is effectively simplified, the overall structure of the valve is more compact, the installation process of the valve is more convenient and quicker, on the other hand, when the driving valve element 20 rotates, the arrangement of the plunger body structure is also beneficial to the transmission of torque force in the axial direction, and the friction force among the ball valve element, the valve rod and the valve body in the prior art is reduced, so that the action process of the valve element is more flexible and convenient.

Claims

1. A linked stop valve comprising:

a valve body (10) having a plurality of medium flow passages (11) arranged at intervals;

the valve core (20) is arranged in a valve cavity correspondingly formed in the valve body (10) and used for controlling the on-off of the medium flow channel (11);

the method is characterized in that: the valve cavity is a mounting hole (30) penetrating through the valve body (10) and communicated with the medium flow passages (11), the valve core (20) is a plunger body arranged in the mounting hole (30), the plunger body comprises a plurality of ball valve sections (21) with through holes (210) and a plurality of sealing sections (22a,22b,22c), each ball valve section (21) and each sealing section (22a,22b,22c) are sequentially arranged at intervals along the axial direction of the plunger body, the through holes (210) of the ball valve sections (21) correspond to the medium flow passages (11), and the plunger body can rotate around the axis of the plunger body so as to disconnect the medium flow passages (11) or communicate the medium flow passages (11) through the through holes (210) of the ball valve sections (21).

2. The ganged shut-off valve of claim 1, wherein: and a first sealing ring (41) and a second sealing ring (42) which can be in sealing contact with the wall surface of the ball valve section (21) are respectively arranged on the front side and the rear side of the ball valve section (21) corresponding to the valve core (20) in the medium flow passage (11).

3. The ganged shut-off valve of claim 2, wherein: the liquid inlet joint (51) and the liquid outlet joint (52) are detachably connected in the medium flow channel (11) of the valve body (10), the end face of the liquid inlet joint (51) is abutted to the first sealing ring (41), and the end face of the liquid outlet joint (52) is abutted to the second sealing ring (42).

4. The ganged shut-off valve of claim 3, wherein: a first elastic piece (53) is further arranged between the end face of the liquid inlet joint (51) and the first sealing ring (41), and a second elastic piece (54) is arranged between the end face of the liquid outlet joint (52) and the second sealing ring (42).

5. The ganged shut-off valve of claim 4, wherein: a first annular concave part (510) is formed in the inner edge of the end face of the liquid inlet joint (51), and the first elastic piece (53) is a first elastic ring arranged in the first annular concave part (510);

the inner edge of the end face of the liquid outlet joint (52) is provided with a second annular concave part (520), and the second elastic piece (54) is a second elastic ring arranged in the second annular concave part (520).

6. The ganged shut valve of any one of claims 1 to 5, wherein: the medium flow passages (11) are two, correspondingly, the plunger body comprises three sealing sections (22a,22b and 22c) and two ball valve sections (21), the two ball valve sections (21) correspond to the two medium flow passages (11), and third sealing rings (55) are arranged between the three sealing sections (22a,22b and 22c) of the plunger body and the wall surface of the mounting pore passage (30).

7. The ganged shut-off valve of claim 6, wherein: the cross-sections of the three sealing sections (22a,22b,22c) of the plunger body are equal in area.

8. The ganged shut valve of any one of claims 1 to 5, wherein: the lower end of the plunger body is exposed out of the lower wall surface of the valve body (10) and is abutted against the lower wall surface of the valve body (10) through a retaining ring (12) correspondingly sleeved on the peripheral wall of the plunger body, the upper end of the plunger body is exposed out of the upper wall surface of the valve body (10) and forms a driving part (13) for a user to carry out rotation adjustment, and the upper end of the plunger body is also provided with a blocking part (14) abutted against the upper wall surface of the valve body (10).

9. The ganged shut-off valve of claim 8, wherein: the blocking part (14) is a blocking piece body which is in fit contact with the upper wall surface of the valve body (10), and the valve body (10) is further provided with a limiting pin (15) which is used for limiting the blocking piece body to rotate between a first position and a second position.

10. The linkage stop valve of claim 9, wherein the first position and the second position form an included angle (α) of 90 degrees with respect to the axis of the plunger body.