CN217328480U

CN217328480U - Stop valve

Info

Publication number: CN217328480U
Application number: CN202220408335.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-08-30
Anticipated expiration: 2032-02-25

Abstract

The utility model relates to a stop valve, including valve body, shutoff piece, drive assembly and elastic component. The valve body is provided with a valve cavity, and an input passage and an output passage which are communicated with the valve cavity. By arranging the stop valve, when the driving assembly is not intervened, the elastic piece enables the blocking piece to be kept in a blocking state, the input channel and/or the output channel are blocked, and a medium cannot be output; when the medium needs to be output, the driving assembly acts to switch the blocking piece to a conduction state, and the input channel and the output channel are conducted through the communication cavity, so that the medium can flow into the output channel from the input channel and is output. Because the plugging of the plugging piece to the input channel and/or the output channel is realized by the acting force provided by the elastic piece, the problem of untight sealing can not occur, the stability and the sealing performance of the plugging piece plugging can be ensured, and the condition of medium leakage is avoided.

Description

Stop valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a stop valve.

Background

In the production line of the lithium battery, electrolyte needs to be injected into the battery, and the flow of the electrolyte needs to be controlled by a valve when the electrolyte is injected. The conventional valves for controlling flow include pinch valves, cone valves, diaphragm valves, and the like.

The diaphragm valve is driven by a pneumatic device to act to conduct or cut off the fluid channel, specifically, when the pneumatic device drives the diaphragm to separate from the bulge in the fluid channel, the fluid channel is conducted, and when the pneumatic device drives the diaphragm to abut against the bulge, the fluid channel is cut off. However, when the ventilation of the pneumatic device in the diaphragm valve is insufficient, the situation that the diaphragm is not tightly sealed and the medium leaks is easy to occur.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a shutoff valve that prevents leakage of a medium, in order to solve the problem that the medium is likely to leak when the conventional diaphragm valve is short of the air-supplied to the pneumatic device.

A shut-off valve comprising:

the valve body is provided with a valve cavity, an input passage and an output passage which are communicated with the valve cavity;

the plugging piece is arranged in the valve cavity and has a plugging state and a conducting state;

the driving assembly is connected with the valve body, is in transmission connection with the plugging piece and is used for driving the plugging piece to be switched from the plugging state to the conducting state;

the elastic piece is arranged on the driving assembly and used for providing acting force for keeping the plugging piece in the plugging state;

when the plugging piece is in the plugging state, the plugging piece plugs one end of the input passage and/or one end of the output passage, which are communicated with the valve cavity;

when the blocking piece is in the conduction state, the blocking piece surrounds the valve cavity to form a communication cavity, and the communication cavity is simultaneously communicated with the input channel and the output channel.

By arranging the stop valve, when the driving assembly is not intervened, the elastic piece enables the blocking piece to be kept in a blocking state, the input channel and/or the output channel are blocked, and a medium cannot be output; when the medium needs to be output, the driving assembly acts to switch the blocking piece to a conduction state, and the input channel and the output channel are conducted through the communication cavity, so that the medium can flow into the output channel from the input channel and is output. Because the plugging of the plugging piece to the input channel and/or the output channel is realized by the acting force provided by the elastic piece, the problem of untight sealing when the traditional pneumatic device is lack of ventilation can be avoided, the stability and the sealing performance of plugging of the plugging piece can be ensured, and the condition of medium leakage is avoided.

In one embodiment, the input channel is provided with a first inlet and a first outlet, the output channel is provided with a second inlet and a second outlet, the first inlet and the second outlet both penetrate through the surface of the valve body, and the first outlet and the second inlet both communicate with the valve cavity;

when the blocking piece is in the blocking state, the blocking piece blocks the first discharge hole and/or the second feed hole;

when the plugging piece is in the conduction state, the communication cavity is communicated with the first discharge hole and the second feed hole simultaneously.

In one embodiment, the blocking piece comprises a connecting part and a protruding part which are connected with each other, and the driving component is in transmission connection with one side of the connecting part, which faces away from the protruding part;

when the plugging piece is in the plugging state, the protruding part penetrates through the first discharge hole and extends into the input channel so as to plug the input channel.

In one embodiment, the valve cavity is provided with a first matching surface which is arranged around the first discharge hole, the second feed hole is positioned on the first matching surface, and one side of the connecting part, which is connected with the protruding part, is provided with a second matching surface;

when the plugging piece is in the plugging state, the second matching surface is in contact with the first matching surface to close the second feeding hole.

In one embodiment, the first mating surface is a tapered surface.

In one embodiment, the radial dimension of the second feed opening is larger than the radial dimension of the other position of the output channel.

In one embodiment, the driving assembly comprises a connecting cylinder, a piston and a connecting rod, one end of the connecting cylinder is connected to the valve body, the piston is movably arranged in the connecting cylinder, and the piston, the connecting cylinder and the valve body enclose to form an air cavity;

one end of the connecting rod is connected to the piston, and the other end of the connecting rod penetrates through the valve body and extends into the valve cavity to be connected with the plugging piece;

the piston has a conducting position and a blocking position in the moving process, and the elastic piece is connected between the connecting cylinder and the piston and used for providing acting force for moving the piston towards the blocking position;

when the piston is positioned at the conducting position, the plugging piece is in the conducting state, and the volume of the air cavity is a first volume;

when the piston is positioned at the plugging position, the plugging piece is in the plugging state, and the volume of the air cavity is a second volume;

wherein the first volume is greater than the second volume.

In one embodiment, the driving assembly further comprises a connecting member connected between the blocking member and one end of the connecting rod extending into the valve cavity.

In one embodiment, the side wall of the connecting cylinder is provided with an air charging hole, and the air charging hole is communicated with the air cavity.

In one embodiment, the driving assembly further comprises a connecting cover connected to the other end of the connecting cylinder away from the valve body, and the elastic member is connected between the connecting cover and the piston.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a stop valve according to an embodiment of the present invention in a blocking state;

fig. 2 is a schematic structural diagram of a stop valve provided in an embodiment of the present invention in a conducting state;

fig. 3 is a schematic structural view of a plugging member and a connecting member in a stop valve according to an embodiment of the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, an embodiment of the present invention provides a stop valve 100, which includes a valve body 10, a blocking member 20, a driving assembly 30, and an elastic member 40.

The valve body 10 has a valve chamber 11 and an input passage 12 and an output passage 13 communicating with the valve chamber 11.

The plugging piece 20 is arranged in the valve cavity 11, and the plugging piece 20 has a plugging state and a conducting state;

the driving assembly 30 is connected to the valve body 10, and is in transmission connection with the blocking member 20, for driving the blocking member 20 to switch from the blocking state to the conducting state, and the elastic member 40 is disposed on the driving assembly 30, for providing an acting force for keeping the blocking member 20 in the blocking state.

When the plugging piece 20 is in a plugging state, the plugging piece 20 plugs one end of the input channel 12 and/or the output channel 13 communicated with the valve cavity 11; when the blocking piece 20 is in a conducting state, the blocking piece 20 surrounds and forms a communication cavity 14 in the valve cavity 11, and the communication cavity 14 is simultaneously communicated with the input channel 12 and the output channel 13.

By providing the above-described shutoff valve, when the drive unit 30 is not inserted, the elastic member 40 keeps the shutoff member 20 in the shutoff state, the input passage 12 and/or the output passage 13 is/are blocked, and the medium cannot be output; when the medium needs to be output, the driving assembly 30 operates to switch the blocking piece 20 to the conduction state, and the input channel 12 and the output channel 13 are conducted through the communication cavity 14, so that the medium can flow into the output channel 13 from the input channel 12 and be output. Because the plugging of the plugging piece 20 to the input channel 12 and/or the output channel 13 is realized by the acting force provided by the elastic piece 40, the problem of untight sealing when the traditional pneumatic device is lack of ventilation can be avoided, the stability and the sealing performance of plugging of the plugging piece 20 can be ensured, and the condition of medium leakage can be avoided.

In this example, the medium is an electrolyte. In other embodiments, the medium may be other fluids, and is not limited herein.

In some embodiments, the driving assembly 30 includes a connecting cylinder 31, a piston 32 and a connecting rod 33, one end of the connecting cylinder 31 is connected to the valve body 10, the piston 32 is movably disposed in the connecting cylinder 31, and the piston 32, the connecting cylinder 31 and the valve body 10 enclose to form an air chamber 34. The connecting rod 33 is connected to the piston 32 at one end and extends through the valve body 10 and into the valve chamber 11 at the other end to connect with the stopper 20.

The piston 32 has a conducting position and a blocking position during its movement.

When the piston 32 is located at the conducting position, the plugging member 20 is in a conducting state, and the volume of the air cavity 34 is a first volume; when the piston 32 is in the blocking position, the blocking member 20 is in the blocking state, and the volume of the air chamber 34 is the second volume.

Wherein the first volume is greater than the second volume.

Further, an elastic member 40 is connected between the connecting cylinder 31 and the piston 32 for providing a force to move the piston 32 toward the blocking position, so that the piston 32 can be maintained at the blocking position, and indirectly the blocking member 20 can be maintained in the blocking state.

As will be explained in conjunction with fig. 1 and 2, the elastic member 40 provides to keep the piston 32 in the blocking position when the inlet channel 12 and the outlet channel 13 are intercepted, so that the blocking member 20 is in the blocking state, as shown in fig. 1; when the input channel 12 and the output channel 13 need to be communicated, the air chamber 34 is filled with air, the air pushes the piston 32 to move towards the right against the action force of the elastic element 40 until the piston 32 moves to the communication position, at this time, the blocking element 20 is also switched to the communication state, and the volume of the air chamber 34 is also increased to the first volume from the previous second volume. When it is further desired to block the inlet duct 12 and the outlet duct 13, the inflation is simply stopped, and the elastic member 40 pushes the piston 32 to move to the left, and the gas in the gas chamber 34 is discharged until the piston 32 moves to the blocking position, at which time the volume of the gas chamber 34 also decreases from the previous first volume to the second volume.

It will be appreciated that the connection between the connecting cylinder 31 and the valve body 10 is a sealed connection such that the piston 32, the valve body 10 and the connecting cylinder 31 enclose the air chamber 34 described above. Meanwhile, when the connecting rod 33 passes through the valve body 10, the connection between the connecting rod 33 and the valve body 10 is also a sealing connection to isolate the valve cavity 11 and the air cavity 34.

In addition, in the present embodiment, the piston 32 is driven to move to the conducting position by filling the air chamber 34 with air, but in other embodiments, an air cylinder or other driving mechanism may be provided to drive the piston 32 to move to the conducting position, and since the air cylinder or other driving mechanism only needs to push the piston 32 to move to the conducting position, the assembly difficulty may be reduced.

In some embodiments, the drive assembly 30 further comprises a connecting member 35, the connecting member 35 being connected between the blocking member 20 and the end of the connecting rod 33 extending into the valve chamber 11.

In practice, the connecting member 35 is a pin.

In some embodiments, the driving assembly 30 further comprises a connecting cap 36, the connecting cap 36 is connected to the other end of the connecting cylinder 31 facing away from the valve body 10, and the elastic member 40 is connected between the connecting cap 36 and the piston 32.

In some embodiments, the piston 32 and the connecting cover 36 are both perforated with through holes, the through holes on the piston 32 are communicated with the air chamber 34, and the through holes on the piston 32 are communicated with the through holes on the connecting cover 36 to form an air charging channel 37 communicated with the air chamber 34.

It should be noted that, by providing the air-filling pipe in the air-filling channel 37, the air-filling pipe is hermetically connected to the through hole of the piston 32, and the piston 32 is movable relative to the air-filling pipe, and one end of the air-filling pipe passes through the through hole of the piston 32 and is communicated with the air chamber 34. Thus, the air is added into the air chamber 34 by the air adding device, and the piston 32 is pushed to move towards the right against the acting force of the elastic member 40 until the piston moves to the conducting position.

In other embodiments, the sidewall of the connecting cylinder 31 is further opened with an air-adding hole, and the air-adding hole is communicated with the air cavity 34. Therefore, the air charging device can be communicated with the air charging hole, and then air is charged into the air cavity 34 through the air charging device, so that the piston 32 is pushed to move towards the right by overcoming the acting force of the elastic piece 40 until the piston moves to the conducting position.

It will be appreciated that the valve body 10 also participates in the formation of the air chamber 34 and so the gas addition port may also be provided in the valve body 10.

In some embodiments, the resilient member 40 is a spring.

In some embodiments, the input channel 12 has a first inlet 15 and a first outlet 16, the output channel 13 has a second inlet 17 and a second outlet 18, the first inlet 15 and the second outlet 18 both extend through the surface of the valve body 10, and the first outlet 16 and the second inlet 17 both communicate with the valve chamber 11.

When the plugging piece 20 is in a plugging state, the plugging piece 20 plugs the first discharge hole 16 and/or the second feed hole 17; when the blocking piece 20 is in a conducting state, the communication cavity 14 is communicated with the first discharge hole 16 and the second discharge hole 17 simultaneously.

In some embodiments, the valve body 10 further defines a breathing passage 19, when the blocking member 20 is in a conducting state, the blocking member 20 divides the valve cavity 10 into the communicating cavity 14 and the breathing cavity 111, one end of the breathing passage 19 is communicated with the breathing cavity 111, and the other end of the breathing passage passes through the valve body 10, so as to avoid a negative pressure condition in the breathing cavity 111 during the switching process of the blocking member 20 between the blocking state and the conducting state, and ensure that the blocking member 20 is stably switched between the blocking state and the conducting state.

Referring to fig. 3, in some embodiments, the blocking element 20 includes a connecting portion 21 and a protruding portion 22 connected to each other, and the driving element 30 is in transmission connection with a side of the connecting portion 21 away from the protruding portion 22.

When the blocking element 20 is in the blocking state, the projection 22 passes through the first discharge opening 16 and projects into the inlet channel 12 to block the inlet channel 12, thereby blocking the inlet channel 12 and the outlet channel 13.

It will be appreciated that the radial dimension of the projection 22 is matched to the radial dimension of the inlet channel 12, so that the projection 22 can block the inlet channel 12 after extending into the inlet channel 12, and the pressure to which the blocking member 20 is subjected during blocking can be increased by blocking the inlet channel 12 with the projection 22 extending into the inlet channel 12.

In practice, the connecting element 35 is connected to the side of the connecting portion 21 facing away from the projection 22.

In some embodiments, the connecting portion 21 is hermetically connected to the valve chamber 11, and when the stopper 20 is in a conducting state, the connecting portion 21, the protruding portion 22 and the inner wall of the valve chamber 11 enclose the communicating chamber 14.

In some embodiments, the valve chamber 11 has a first mating surface 112, the first mating surface 112 is disposed around the first discharge opening 16, the second feed opening 17 is disposed on the first mating surface 112, and the connecting portion 21 has a second mating surface on a side thereof connected to the protruding portion 22.

When the blocking piece 20 is in the blocking state, the second matching surface is in contact with the first matching surface 112 to close the second feeding hole 17.

Thus, when the plugging member 20 is in a plugging state, the first discharge port 16 and the second feed port 17 can be simultaneously sealed, the sealing performance of plugging is further ensured, and the medium leakage is avoided.

It should be noted that fig. 1 and fig. 2 show the state of the stop valve when in use, the input channel 12 is located above the output channel 13, and the first liquid outlet is located above the second liquid inlet, so that when the blocking member 20 is in a conducting state, the medium can be ensured to flow out from the second liquid inlet, and the residual and contamination in the communication cavity 14 of the medium can be avoided.

In addition, in this embodiment, the plugging member 20 can deform, so the shape of the second mating surface can change, and it is only necessary to ensure that the second mating surface is in sealing contact with the first mating surface 112 when the plugging member 20 is in the plugging state.

In some embodiments, the first mating surface 112 is a tapered surface, and the first mating surface 112 is disposed around the first discharge hole 16, so that the first discharge hole 16 is located at a center of the first mating surface 112. The corresponding protrusion 22 is also located at the middle position of the connecting portion 21, that is, the second mating surface is disposed around the protrusion 22, so that after the protrusion 22 extends into the input channel 12, the second mating surface contacts with the first mating surface 112 to close the second feeding hole 17 on the first contacting surface.

In some embodiments, the radial dimension of the second feed opening 17 is greater than the radial dimension of the other locations of the outlet channel 13. Thus, the aperture of the second feed opening 17 is large, and the area communicating with the communicating chamber 14 can be increased, so that the medium can flow into the second feed opening 17.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A shut-off valve, comprising:

when the plugging piece is in the conduction state, the plugging piece surrounds in the valve cavity to form a communicating cavity, and the communicating cavity is communicated with the input channel and the output channel simultaneously.

2. The stop valve of claim 1, wherein the input channel has a first inlet and a first outlet, the output channel has a second inlet and a second outlet, the first inlet and the second outlet both penetrate the surface of the valve body, and the first outlet and the second inlet both communicate with the valve chamber;

when the plugging piece is in the plugging state, the first discharge hole and/or the second feed hole are plugged by the plugging piece;

3. A stop valve according to claim 2, wherein the closure comprises a connecting portion and a projection connected to each other, the drive assembly being in driving connection with a side of the connecting portion facing away from the projection;

4. The stop valve of claim 3, wherein the valve chamber has a first mating surface arranged around the first discharge port, the second feed port is located at the first mating surface, and the side of the connecting part connected with the protruding part has a second mating surface;

5. The shut-off valve of claim 4, wherein the first mating surface is a tapered surface.

6. The shut-off valve of claim 4, wherein the radial dimension of the second inlet port is greater than the radial dimension of the outlet passage elsewhere.

7. The stop valve of any one of claims 1-6, wherein the driving assembly comprises a connecting cylinder, a piston and a connecting rod, one end of the connecting cylinder is connected to the valve body, the piston is movably arranged in the connecting cylinder, and the piston, the connecting cylinder and the valve body enclose to form an air cavity;

wherein the first volume is greater than the second volume.

8. The shut-off valve of claim 7, wherein the drive assembly further comprises a connector connected between the closure member and an end of the connecting rod extending into the valve chamber.

9. The stop valve of claim 7, wherein the connecting cylinder side wall is provided with a gas filling hole, and the gas filling hole is communicated with the gas cavity.

10. The shut-off valve of claim 7, wherein the drive assembly further comprises a connecting cap connected to the other end of the connecting cylinder facing away from the valve body, the resilient member being connected between the connecting cap and the piston.