Anti-explosion valve plugging device

Abstract

The utility model relates to the technical field of battery pack testing equipment, in particular to an explosion-proof valve plugging device which comprises a device body, a sealing block is arranged in the device body in a sliding mode, one end of the sealing block is a sealing end, and the other end of the sealing block is a connecting end. The anti-explosion valve plugging device further comprises an operation screw, one end of the operation screw is fixed to the connecting end, the other end of the operation screw is fixed to an operation piece, the operation screw penetrates through the device body and is in threaded connection with the device body, and a pressing block is arranged at the sealing end. During airtight detection of the explosion-proof valve, part of the explosion-proof valve is fixed in the device main body, and the operation piece is rotated to move towards the device main body, so that the operation screw drives the sealing block to move in the device main body, the pressing block gradually approaches and abuts against the explosion-proof valve until the valve of the explosion-proof valve is opened, and the pressing block stably abuts against the valve. During inflation, due to the limiting effect of the pressing block, the opening size of the valve cannot be affected by airflow, the valve is always kept stable in the inflation process, and the inflation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack testing equipment, and particularly relates to an explosion-proof valve plugging device.

Background Art

[0002] Nowadays, new energy vehicles are used more and more widely, and the battery pack is one of the important components of new energy vehicles. During the production process of the battery pack, detecting the airtightness of the battery pack is one of the important safety testing links; during the detection process of the box body, it is necessary to plug the explosion-proof valve of the box body and then inflate the box body to achieve the purpose of airtightness detection of the battery pack; nowadays, most explosion-proof valve plugging devices open the valve by magnetic attraction. For a flip-type explosion-proof valve, since the valve is opened by flipping from one side, the method of magnetic attraction to adsorb the valve will be more complicated, and a greater suction force is required to flip the valve; moreover, during the inflation process, the airflow entering the explosion-proof valve may press the valve. If the valve is adsorbed by magnetic attraction, the opening of the valve will be unstable, resulting in an unstable inflation process and affecting the inflation efficiency.

Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides an explosion-proof valve plugging device.

[0004] The solution for the utility model to solve the technical problems is to provide an explosion-proof valve plugging device, which includes a device main body. A sealing block is slidably arranged in the device main body. One end of the sealing block is a sealing end, and the other end is a connecting end; the explosion-proof valve plugging device further includes an operating screw. One end of the operating screw is fixed to the connecting end, and the other end is fixed to an operating member. The operating screw penetrates through the device main body and is threadedly connected to the device main body. A pressing block is arranged at the sealing end.

[0005] Preferably, a sealing ring is arranged on one side of the sealing end away from the connecting end.

[0006] Preferably, a hanging plate is arranged at one end of the device main body away from the operating member.

[0007] Preferably, a first cavity is defined between the hanging plate and the sealing end.

[0008] Preferably, a fixing hole is arranged at the connecting end. A screw pressing plate is fixed on one side of the connecting end close to the operating member. The screw pressing plate is provided with a screw hole corresponding to the operating screw. A fixing head is arranged at one end of the operating screw close to the sealing block. The diameter of the fixing head is larger than the diameter of the screw hole. The fixing head is fixed in the fixing hole through the screw pressing plate.

[0009] Preferably, a notch is formed on the side surface of the device main body, an inflation space is formed inside the sealing block, an air hole is provided in the sealing block corresponding to the notch, and the air hole communicates with the inflation space.

[0010] Preferably, an inflation nozzle is provided on one side of the air hole away from the inflation space, and the inflation nozzle is threadedly connected to the air hole.

[0011] Preferably, a second cavity is defined between one side of the sealing end away from the connection end and the inflation space, and the inner diameter of the inflation space is smaller than the inner diameter of the second cavity.

[0012] Preferably, an adjusting screw is provided on the operating member, and the adjusting screw penetrates through the operating member; when the airtightness test is not carried out, a gap is left between the adjusting screw and the device main body.

[0013] Preferably, the adjusting screw is threadedly connected to the operating member, and rotating the adjusting screw can move the adjusting screw closer to or away from the device main body.

[0014] Compared with the prior art, the explosion-proof valve plugging device of the present utility model has the following advantages:

[0015] 1. The explosion-proof valve plugging device of the present utility model includes a device main body, a sealing block is slidably arranged in the device main body, one end of the sealing block is a sealing end, and the other end is a connection end; the explosion-proof valve plugging device further includes an operating screw rod, one end of the operating screw rod is fixed to the connection end, the other end is fixed to an operating member, the operating screw rod penetrates through the device main body and is threadedly connected to the device main body, and a pressing block is arranged at the sealing end; when performing the airtightness test of the explosion-proof valve, part of the explosion-proof valve is fixed in the device main body, and the operating member is rotated to move the operating member in a direction closer to or away from the device main body, so that the operating screw rod drives the sealing block to move in the device main body, and the pressing block gradually approaches and abuts against the explosion-proof valve until the valve of the explosion-proof valve is opened or the pressing block gradually moves away from the explosion-proof valve; the operating member is used to operate the pressing block to gradually approach and open the valve. Since the operating member, the device main body and the sealing block are all connected by the operating screw rod, after the valve is opened to a predetermined position, the operating member stops rotating, and the pressing block also stably abuts against the valve. During inflation, due to the limiting effect of the pressing block, the opening size of the valve will not be affected by the air flow, and it remains stable during the inflation process, improving the inflation efficiency; and all components are linked only by one operating screw rod, and the structure is simple and easy to manufacture.

[0016] 2. A sealing ring is arranged on one side of the sealing end of the explosion-proof valve plugging device of the present utility model away from the connection end. When the pressing block abuts against the explosion-proof valve, the sealing ring abuts against the top surface of the explosion-proof valve; the sealing ring is used to ensure the sealing performance when the sealing block cooperates with the explosion-proof valve and prevent air leakage during the inflation process.

[0017] 3. One end of the device body of the explosion-proof valve plugging device of the present utility model, which is far from the operating member, is provided with a hanging plate. When performing the airtight detection of the explosion-proof valve, the hanging plate is buckled with the corresponding hanging position on the explosion-proof valve. The cooperation of the hanging plate and the explosion-proof valve is set to facilitate the installation of the explosion-proof valve plugging device and prevent the pressing block from being displaced and damaging the valve at the same time.

[0018] 4. A first cavity is defined between the hanging plate and the sealing end of the explosion-proof valve plugging device of the present utility model; the first cavity accommodates part of the explosion-proof valve, the first cavity provides a moving space between the sealing block and the explosion-proof valve, and at the same time the size of the first cavity can change with the movement of the sealing block, so that the explosion-proof valve plugging device of the present utility model can cooperate with explosion-proof valves of different sizes.

[0019] 5. The connecting end of the explosion-proof valve plugging device of the present utility model is provided with a fixing hole, and a screw pressing plate is fixed on one side of the connecting end close to the operating member. The screw pressing plate is provided with a screw hole corresponding to the operating screw. One end of the operating screw close to the sealing block is provided with a fixing head, and the diameter of the fixing head is larger than the diameter of the screw hole. The fixing head is fixed in the fixing hole through the screw pressing plate; using the screw pressing plate to fix the fixing head of the operating screw makes the connection between the fixing head and the sealing block more stable, makes the operating screw drive the sealing block to move more stably, and improves the structural stability.

[0020] 6. A notch is opened on the side surface of the device body of the explosion-proof valve plugging device of the present utility model, an inflation space is opened inside the sealing block, and the sealing block is provided with an air hole corresponding to the notch, and the air hole communicates with the inflation space; an external air pump inflates the box body through the inflation space, and at the same time the inflation space is not communicated with the aforementioned fixing hole to ensure airtightness during inflation.

[0021] 7. An inflation nozzle is provided on the side of the air hole of the explosion-proof valve plugging device of the present utility model, which is far from the inflation space, and the inflation nozzle is threadedly connected to the air hole; the threaded connection can improve the airtightness of the connection part, reduce the influence of air leakage, and improve the stability during the inflation process.

[0022] 8. A second cavity is defined between the side of the sealing end of the explosion-proof valve plugging device of the present utility model, which is far from the connecting end, and the inflation space, and the inner diameter of the inflation space is smaller than the inner diameter of the second cavity; the second cavity accommodates the valve of the opened explosion-proof valve, the second cavity provides a moving space for the valve, and at the same time the inner wall of the second cavity can limit the valve. After the valve is opened to a certain extent, the valve will abut against the inner wall of the second cavity to prevent the valve from being opened too large and affecting the stability of inflation.

[0023] 9. An adjusting screw is provided on the operating part of the explosion-proof valve plugging device of the present utility model, and the adjusting screw penetrates through the operating part; when airtight detection is not carried out, there is a gap between the adjusting screw and the device main body; after the operating screw moves a certain distance, the adjusting screw abuts against the device main body, and at this time it means that the moving distance of the sealing block reaches the limit distance, that is, the opening degree of the valve reaches the predetermined position; therefore, the adjusting screw can prevent the sealing block from moving excessively and prevent the pressing block from damaging the valve.

[0024] 10. The adjusting screw of the explosion-proof valve plugging device of the present utility model is threadedly connected with the operating part, and by rotating the adjusting screw, the adjusting screw can move closer to or away from the device main body; before airtight detection, the gap between the adjusting screw and the device main body can be adjusted according to the specifications of the explosion-proof valve and the requirements of airtight detection, so that the explosion-proof valve plugging device of the present utility model can adapt to more application scenarios of airtight detection of explosion-proof valves.

Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the explosion-proof valve plugging device provided by the first embodiment of the present utility model.

[0027] Figure 2 It is an exploded view of the explosion-proof valve plugging device provided by the first embodiment of the present utility model.

[0028] Figure 3 It is a cross-sectional view of the explosion-proof valve plugging device provided by the first embodiment of the present utility model in cooperation with the explosion-proof valve.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the explosion-proof valve.

[0030] Figure 5 It is a cross-sectional view of the explosion-proof valve plugging device provided by the first embodiment of the present utility model in the inflated state.

[0031] Explanation of the reference numerals in the drawings:

[0032] 1. Explosion-proof valve plugging device; 2. Explosion-proof valve; 3. Box body;

[0033] 10. Device main body; 11. Sealing block; 12. Operating screw; 13. Operating part; 14. Adjusting screw; 20. Valve; 21. Clamping position;

[0034] 100. Hanging plate; 101. Notch; 102. First cavity; 110. Connection end; 111. Sealing end; 112. Inflatable space; 113. Air hole; 114. Inflating nozzle; 115. Screw pressing plate; 120. Fixed head; 140. Interval;

[0035] 1100. Fixed hole; 1101. Second cavity; 1102. Pressing block; 1110. Sealing ring; 1150. Screw hole; 1151. Fixed bolt.

Detailed implementation manners

[0036] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific implementation examples described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0038] In the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0039] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific circumstances.

[0040] In addition, the terms "installation", "setting", "provided with", "connection", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can also be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0041] Please refer to Figures 1-3 and Figure 5 For the explosion-proof valve plugging device 1 provided in the first embodiment of the present utility model, it includes a device main body 10. A sealing block 11 is slidably arranged in the device main body 10. One end of the sealing block 11 is a sealing end 111, and the other end is a connecting end 110. The explosion-proof valve plugging device 1 further includes an operating screw 12. One end of the operating screw 12 is fixed to the connecting end 110, and the other end is fixed to an operating member 13. The operating screw 12 penetrates the device main body 10 and is threadedly connected to the device main body 10. A pressing block 1102 is arranged at the sealing end 111. When performing the airtight detection of the explosion-proof valve, part of the explosion-proof valve 2 is fixed in the device main body 10. Rotate the operating member 13 to move the operating member 13 in a direction close to or away from the device main body 10, so that the operating screw 12 drives the sealing block 11 to move in the device main body 10, and the pressing block 1102 gradually approaches and abuts against the explosion-proof valve 2 to open the valve 20 of the explosion-proof valve or the pressing block 1102 gradually moves away from the explosion-proof valve 2. Operate the pressing block 1102 to gradually approach and open the valve 20 by using the operating member 13, and then inflate the inside of the box body 3. Since the operating member 13, the device main body 10, and the sealing block 11 are all connected through the operating screw 12, after the valve 20 is opened to a predetermined position, the operating member 13 stops rotating, and the pressing block 1102 also stably abuts against the valve 20. During the inflation process, due to the limiting effect of the pressing block 1102, the opening size of the valve 20 will not be affected by the air flow and remains stable during the inflation process, improving the inflation efficiency. And only through one operating screw 12, all components are linked, and the structure is simple and easy to manufacture.

[0042] Optionally, the operation method and shape of the operating member 13 are not limited, as long as the up and down movement of the sealing block 11 can be realized.

[0043] Further, a sealing ring 1110 is arranged on the side of the sealing end 111 away from the connecting end 110. The sealing ring 1110 is arranged to fit the end face of the connecting end 110. When the pressing block 1102 abuts against the explosion-proof valve, the sealing ring 1110 abuts against the top surface of the explosion-proof valve 2. The sealing ring 1110 is used to ensure the sealing performance when the sealing block 11 cooperates with the explosion-proof valve 2 and prevent air leakage during the inflation process.

[0044] Further, please combine Figure 4 When performing the airtight detection of the explosion-proof valve, a hanging plate 100 is arranged at the end of the device main body 10 away from the operating member 13, and the hanging plate 100 is buckled with the corresponding clamping position 21 on the explosion-proof valve 2. The cooperation of the hanging plate 100 and the explosion-proof valve 2 is set to facilitate the installation of the explosion-proof valve plugging device 1 and prevent the pressing block 1102 from being displaced and damaging the valve 20.

[0045] Specifically, the explosion-proof valve plugging device 1 provided in the first embodiment of the present utility model is applicable to a flip-type explosion-proof valve or other explosion-proof valves that can open the valve by extrusion.

[0046] Further, please combine Figure 1 and Figure 3 , a first cavity 102 is defined between the hanging plate 100 and the sealing end 111; the first cavity 102 accommodates part of the explosion-proof valve, the first cavity 102 provides a moving space between the sealing block 11 and the explosion-proof valve 2, and at the same time, the size of the first cavity 102 can change with the movement of the sealing block 11, so that the explosion-proof valve plugging device 1 can cooperate with explosion-proof valves of different sizes.

[0047] Further, the connecting end 110 is provided with a fixing hole 1100. A screw pressing plate 115 is fixed on one side of the connecting end 110 close to the operating member 13. The screw pressing plate 115 is provided with a screw hole 1150 corresponding to the operating screw 12. One end of the operating screw 12 close to the sealing block 11 is provided with a fixing head 120. The diameter of the fixing head 120 is larger than the diameter of the screw hole 1150. The fixing head 120 is fixed in the fixing hole 1100 through the screw pressing plate 115; using the screw pressing plate 115 to fix the fixing head 120 of the operating screw 12 makes the connection between the fixing head 120 and the sealing block 11 more stable, makes the operating screw 12 drive the sealing block 11 to move more stably, and improves the structural stability.

[0048] Specifically, the screw pressing plate 115 is fixed by a fixing bolt 1151.

[0049] Further, a notch 101 is formed on the side surface of the device main body 10. An inflation space 112 is formed inside the sealing block 11. The sealing block 11 is provided with an air hole 113 corresponding to the notch 101. The air hole 113 communicates with the inflation space 112; an external air pump inflates the box body through the inflation space 112, and at the same time, the inflation space 112 is not communicated with the aforementioned fixing hole 1100 to ensure the airtightness during inflation.

[0050] Further, an inflation nozzle 114 is provided on one side of the air hole 113 away from the inflation space 112. The inflation nozzle 114 is threadedly connected to the air hole 113; the threaded connection can improve the airtightness of the connection part, reduce the influence of air leakage, and improve the stability during the inflation process.

[0051] Further, please combine Figure 3 and Figure 5, a second cavity 1101 is defined between the side of the sealed end 111 away from the connection end 110 and the inflation space 112, and the inner diameter of the inflation space 112 is smaller than that of the second cavity 1101; the second cavity 1101 houses the valve 20 of the opened explosion-proof valve, and the second cavity 1101 provides a moving space for the valve 20. At the same time, because the inner diameter of the inflation space 112 is smaller than that of the second cavity 1101, the inner wall of the second cavity 1101 can limit the valve 20. After the valve 20 is opened to a certain extent, the valve 20 will abut against the inner wall of the second cavity 1101 to limit the valve 20 and prevent the valve 20 from opening too much and affecting the inflation stability.

[0052] Further, an adjusting screw 14 is provided on the operating member 13, and the adjusting screw 14 penetrates through the operating member 13; when the airtightness test is not performed, there is a gap 140 between the adjusting screw 14 and the device main body 10; after the operating screw 12 moves a certain distance, the adjusting screw 14 abuts against the device main body 10. At this time, it means that the moving distance of the sealing block 11 reaches the limit distance, that is, the opening degree of the valve 20 reaches the predetermined position; therefore, the adjusting screw 14 can prevent the sealing block 11 from moving excessively and prevent the pressing block 1102 from pressing the valve 20 to damage.

[0053] Further, the adjusting screw 14 is threadedly connected to the operating member 13, and rotating the adjusting screw 14 can make the adjusting screw 14 move closer to or away from the device main body 10; before the airtightness test, the gap 140 between the adjusting screw 14 and the device main body 10 can be adjusted according to the specifications of the explosion-proof valve 2 and the requirements of the airtightness test, so that the explosion-proof valve plugging device 1 can adapt to more application scenarios of the airtightness test of the explosion-proof valve.

[0054] Compared with the prior art, the explosion-proof valve plugging device of the present utility model has the following advantages:

[0055] 1. The explosion-proof valve plugging device of the present utility model includes a device main body. A sealing block is slidably arranged in the device main body. One end of the sealing block is a sealing end, and the other end is a connection end. The explosion-proof valve plugging device further includes an operating screw rod. One end of the operating screw rod is fixed to the connection end, and the other end is fixed to an operating member. The operating screw rod penetrates through the device main body and is threadedly connected to the device main body. A pressing block is arranged at the sealing end. When performing the airtight detection of the explosion-proof valve, part of the explosion-proof valve is fixed in the device main body. Rotate the operating member to move the operating member towards or away from the device main body, so that the operating screw rod drives the sealing block to move in the device main body. The pressing block gradually approaches and abuts against the explosion-proof valve to open the valve of the explosion-proof valve or the pressing block gradually moves away from the explosion-proof valve. Operate the pressing block to gradually approach and open the valve by using the operating member. Since the operating member, the device main body and the sealing block are all connected through the operating screw rod, after the valve is opened to a predetermined position, the operating member stops rotating, and the pressing block also stably abuts against the valve. During the inflation process, due to the limiting effect of the pressing block, the opening size of the valve will not be affected by the airflow, and it remains stable during the inflation process, improving the inflation efficiency. And only through one operating screw rod, all components are linked, and the structure is simple and easy to manufacture.

[0056] 2. A sealing ring is arranged on the side of the sealing end of the explosion-proof valve plugging device of the present utility model away from the connection end. When the pressing block abuts against the explosion-proof valve, the sealing ring abuts against the top surface of the explosion-proof valve. The sealing ring is used to ensure the sealing performance when the sealing block cooperates with the explosion-proof valve and prevent air leakage during the inflation process.

[0057] 3. A hanging plate is arranged at one end of the device main body of the explosion-proof valve plugging device of the present utility model away from the operating member. When performing the airtight detection of the explosion-proof valve, the hanging plate is buckled with the corresponding hanging position on the explosion-proof valve. The setting of the hanging plate in cooperation with the explosion-proof valve is to facilitate the installation of the explosion-proof valve plugging device and prevent the pressing block from being displaced and damaging the valve at the same time.

[0058] 4. A first cavity is defined between the hanging plate and the sealing end of the explosion-proof valve plugging device of the present utility model. The first cavity accommodates part of the explosion-proof valve. The first cavity provides a moving space between the sealing block and the explosion-proof valve. At the same time, the size of the first cavity can change with the movement of the sealing block, so that this explosion-proof valve plugging device can cooperate with explosion-proof valves of different sizes.

[0059] 5. A fixing hole is arranged at the connection end of the explosion-proof valve plugging device of the present utility model. A screw rod pressing plate is fixed on the side of the connection end close to the operating member. The screw rod pressing plate is provided with a screw hole corresponding to the operating screw rod. A fixing head is arranged at one end of the operating screw rod close to the sealing block. The diameter of the fixing head is larger than the diameter of the screw hole. The fixing head is fixed in the fixing hole through the screw rod pressing plate. Using the screw rod pressing plate to fix the fixing head of the operating screw rod makes the connection between the fixing head and the sealing block more stable, makes the operating screw rod drive the sealing block to move more stably, and improves the structural stability.

[0060] 6. A notch is provided on the side of the device body of the explosion-proof valve plugging device of the present utility model. An inflation space is provided inside the sealing block. The sealing block is provided with an air hole corresponding to the notch, and the air hole communicates with the inflation space. An external air pump inflates the box body through the inflation space. At the same time, the inflation space is not communicated with the aforementioned fixing hole to ensure airtightness during inflation.

[0061] 7. An inflation nozzle is provided on the side of the air hole of the explosion-proof valve plugging device of the present utility model away from the inflation space. The inflation nozzle is threadedly connected to the air hole. Threaded connection can improve the airtightness of the connection part, reduce the influence of air leakage, and improve the stability during the inflation process.

[0062] 8. A second cavity is defined between the side of the sealing end of the explosion-proof valve plugging device of the present utility model away from the connection end and the inflation space. The inner diameter of the inflation space is smaller than the inner diameter of the second cavity. The second cavity accommodates the valve of the opened explosion-proof valve, provides a moving space for the valve, and at the same time, the inner wall of the second cavity can limit the valve. After the valve is opened to a certain extent, the valve will abut against the inner wall of the second cavity to prevent the valve from opening too much and affecting the stability of inflation.

[0063] 9. An adjusting screw is provided on the operating part of the explosion-proof valve plugging device of the present utility model, and the adjusting screw penetrates through the operating part. When the airtightness test is not carried out, there is a gap between the adjusting screw and the device body. After the operating screw moves a certain distance, the adjusting screw abuts against the device body. At this time, it means that the moving distance of the sealing block reaches the limit distance, that is, the opening degree of the valve reaches the predetermined position. Therefore, the adjusting screw can prevent the sealing block from moving excessively and prevent the pressing block from damaging the valve.

[0064] 10. The adjusting screw of the explosion-proof valve plugging device of the present utility model is threadedly connected to the operating part. By rotating the adjusting screw, the adjusting screw can move closer to or away from the device body. Before the airtightness test, the gap between the adjusting screw and the device body can be adjusted according to the specifications of the explosion-proof valve and the requirements of the airtightness test, so that the explosion-proof valve plugging device of the present utility model can adapt to more application scenarios of airtightness testing of explosion-proof valves.

[0065] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An explosion-proof valve blocking device, characterized in that: The explosion-proof valve blocking device includes a device body, in which a sealing block is slidably provided, one end of the sealing block is a sealing end, and the other end is a connecting end; the explosion-proof valve blocking device also includes an operating screw, one end of the operating screw is fixed to the connecting end, and the other end is fixed to an operating member, the operating screw passes through the device body and is threadedly connected to the device body, and the sealing end is provided with a pressure block.

2. The explosion-proof valve blocking device according to claim 1, characterized in that: A sealing ring is provided on one side of the sealing end away from the connecting end.

3. The explosion-proof valve blocking device according to claim 1, characterized in that: A hanging plate is provided at one end of the device body away from the operating member.

4. The explosion-proof valve blocking device according to claim 3, characterized in that: A first cavity is defined between the hanging plate and the sealing end.

5. The explosion-proof valve blocking device according to claim 1, characterized in that: The connecting end is provided with a fixing hole, and a screw pressure plate is fixed on the side of the connecting end close to the operating member, and the screw pressure plate is provided with a screw hole corresponding to the operating screw, and the operating screw is provided with a fixing head at one end close to the sealing block, and the diameter of the fixing head is larger than the diameter of the screw hole, and the fixing head is fixed in the fixing hole through the screw pressure plate.

6. The explosion-proof valve blocking device according to claim 5, characterized in that: A notch is provided on the side of the device body, an air-filled space is provided inside the sealing block, and an air hole is provided on the sealing block corresponding to the notch, and the air hole is connected to the air-filled space.

7. The explosion-proof valve blocking device according to claim 6, characterized in that: An inflation nozzle is arranged on one side of the air hole away from the inflation space, and the inflation nozzle is threadedly connected with the air hole.

8. The explosion-proof valve blocking device according to claim 6, characterized in that: A second cavity is defined between the side of the sealing end away from the connecting end and the inflation space, and the inner diameter of the inflation space is smaller than the inner diameter of the second cavity.

9. The explosion-proof valve blocking device according to claim 1, characterized in that: The operating member is provided with an adjusting screw, and the adjusting screw passes through the operating member; when the airtightness detection is not performed, a gap is left between the adjusting screw and the device body.

10. The explosion-proof valve blocking device according to claim 9, characterized in that: The adjusting screw is threadably connected to the operating member, and rotating the adjusting screw can move the adjusting screw closer to or away from the device body.

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