Dustproof and explosion-proof breather valve

Abstract

The utility model belongs to the technical field of storage tank equipment, and particularly relates to a dust-proof and explosion-proof breather valve which comprises an explosion-proof breather valve body, a sealing water tank is arranged on one side of the explosion-proof breather valve body, the dust-proof and explosion-proof breather valve is characterized by further comprising a rotating rod, the rotating rod is installed in the sealing water tank in a rotating mode, and a plurality of limiting grooves are formed in the peripheral side wall of the rotating rod. A limiting rod is inserted into the limiting groove, a fixing rod is fixedly installed on the side, away from the rotating rod, of the limiting rod, a scraping piece making contact with the inner wall of the sealing water tank is fixedly installed on the fixing rod, a sealing cover is arranged at the top of the sealing water tank, and the bottom of the sealing cover makes contact with the top of the scraping piece; when the whole device is used, it is ensured that dirt on the inner side wall and the bottom of the sealing water tank can be completely removed and scraped, dirt at the bottom of the sealing cover can be removed and scraped, meanwhile, the scraping piece can be detached and replaced, and the situation that the scraping effect is seriously affected due to abrasion of the scraping piece is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage tank equipment, and particularly relates to a dust-proof and explosion-proof breather valve. Background Technique

[0002] The explosion-proof breather valve has the dual functions of an explosion-proof flame arrester and a breather valve, which is safe and convenient.

[0003] For example, a Chinese patent with the publication number CN216813012U discloses a dust-proof and explosion-proof breather valve, which includes a breather valve body. One side of the breather valve body is provided with a sealing water tank, and a driving motor is fixedly installed at the center position of the top surface of the sealing water tank. The output end of the driving motor extends into the interior of the sealing water tank and is fixedly installed with a rotating rod. A support rod is welded on the surface of the rotating rod, and the other end of the support rod is fixedly installed with a scraping blade. A sewage discharge pipe is fixedly installed at the center position of the bottom surface of the sealing water tank. In the utility model, by setting the driving motor, the output end of the driving motor drives the rotating rod to rotate, so that the rotating rod rotates to drive a plurality of support rods to rotate, and a plurality of support rods rotate to drive a plurality of scraping blades to continuously rotate, which can scrape the dirt on the inner wall of the sealing water tank, reduce the probability of dirt adhering to the inner wall of the sealing water tank, and at the same time reduce the labor intensity of the staff when cleaning the sealing water tank and reduce the operation difficulty of the staff.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages in use. For example, after a long time of use of the device, the scraping blade is in contact with the inner wall of the sealing water tank for a long time, which will cause the scraping blade to be worn. After years of accumulation, the serious wear of the scraping blade will affect the scraping effect of the dirt on the inner wall of the sealing water tank. The device is not convenient for replacing the scraping blade. At the same time, the scraping blade in the device can only scrape the dirt on the inner side wall of the sealing water tank and cannot scrape the dirt on the top and bottom of the sealing water tank, and its dirt scraping effect is not good. In view of this, we propose a dust-proof and explosion-proof breather valve. Content of the Utility Model

[0006] The purpose of the utility model is to provide a dust-proof and explosion-proof breather valve to solve the problems raised in the above background technique.

[0007] In view of this, the utility model provides a dust-proof and explosion-proof breather valve, which includes an explosion-proof breather valve body. One side of the explosion-proof breather valve body is provided with a sealing water tank, and further includes:

[0008] Rotating rod, the rotating rod is rotatably installed in the sealed water tank, a plurality of limiting grooves are formed on the circumferential side wall of the rotating rod, a limiting rod is inserted and installed in the limiting groove, a fixed rod is fixedly installed on the side of the limiting rod away from the rotating rod, and a scraping blade in contact with the inner wall of the sealed water tank is fixedly installed on the fixed rod. A sealing cover is provided on the top of the sealed water tank, and the bottom of the sealing cover is in contact with the top of the scraping blade;

[0009] Driving assembly, the driving assembly is located on the sealing cover and is used to drive the rotating rod to rotate;

[0010] Suction pipe, the suction pipe is fixedly installed at the bottom of the sealed water tank and on one side of the rotating rod, one end of the suction pipe penetrates the bottom of the sealed water tank and extends to the outside, and a sewage discharge pipe is fixedly installed at the bottom of the sealed water tank and on the other side of the rotating rod, and one end of the sewage discharge pipe penetrates the bottom of the sealed water tank and extends to the outside.

[0011] In this technical solution, during daily use, through the provided driving assembly, the driving assembly drives the rotating rod to rotate. Subsequently, the rotating rod will drive a plurality of limiting rods to rotate. Subsequently, the limiting rods will drive the fixed rod to rotate, and the fixed rod will drive the scraping blade to rotate. During the rotation of the scraping blade, the scraping blade will contact the inner side wall and the bottom of the sealed water tank. At the same time, the scraping blade will contact the bottom of the sealing cover. During the rotation process, it can scrape the dirt on the sealing cover and the sealed water tank, avoiding dirt adhering to the inner wall of the sealed water tank and also avoiding dirt adhering to the bottom of the sealing cover, eliminating the need for manual cleaning by personnel, which is more convenient;

[0012] When the wiper blade needs to be replaced after long-term use, the operator removes the sealing cover from the top of the sealed water tank. At this time, the fixing of the sealing cover will be released. Subsequently, the operator lifts the sealing cover upward, and the sealing cover will drive the motor to move upward. Accordingly, the rectangular block will move upward in the rectangular groove until the rectangular block is completely withdrawn from the rectangular groove. At this time, several limit rods will be released from fixation. The operator pulls the fixing rod upward, and accordingly, the fixing rod will drive the limit rod to move upward in the corresponding limit groove. At this time, the wiper blade on the fixing rod will also move upward until the limit rod is completely withdrawn from the corresponding limit groove. At this time, the wiper blade will be disassembled. When installing a new wiper blade, the operator aligns the limit rod with the corresponding limit groove. At this time, the limit rod will be directly above the corresponding limit groove. Subsequently, the limit rod is moved downward so that the limit rod is inserted into the corresponding limit groove until the limit rod can no longer move downward. At this time, the new wiper blade will contact the inner side wall and the bottom of the sealed water tank. Subsequently, the operator places the sealing cover directly above the sealed water tank and aligns the rectangular block with the rectangular groove. Subsequently, the sealing cover is moved downward so that the rectangular block is inserted into the rectangular groove. At this time, the bottom of the sealing cover will contact the top of the sealed water tank, and several limit rods will be fixed in the corresponding limit grooves. Moreover, the new wiper blade will contact the bottom of the sealing cover. Subsequently, the sealing cover is reinstalled and fixed to the top of the sealed water tank.

[0013] In the above technical solution, further, the driving assembly includes:

[0014] A rectangular groove is provided at the top of the rotating rod. A rectangular block is inserted and installed in the rectangular groove. The top of the sealing cover is fixedly provided with a motor, and the output end of the motor penetrates through the sealing cover and is coaxially connected to the rectangular block.

[0015] In this technical solution, the motor is started, and the output shaft of the motor drives the rectangular block to rotate. Accordingly, the rectangular block will drive the rotating rod to rotate.

[0016] In the above technical solution, further, the output shaft of the motor is rotatably connected to the sealing cover, and the sealing cover is fixed to the top of the sealed water tank by several fastening bolts.

[0017] In this technical solution, it is ensured that the motor can operate normally; it is ensured that the sealing cover can be removed from the top of the sealed water tank, and moreover, the sealing cover can be installed on the top of the sealed water tank, which is relatively convenient.

[0018] In the above technical solution, further, both the fixing rod and the wiper blade are in a "U" - shaped structure.

[0019] In this technical solution, the "U" - shaped structure ensures that the wiper blade can scrape off the dirt on the inner wall of the sealed water tank and the dirt on the bottom of the sealing cover cleanly.

[0020] In the above technical solution, further, the fixed rod, the limiting rod and the scraping blade are of an integrally formed structure.

[0021] In this technical solution, the structural stability among the fixed rod, the limiting rod and the scraping blade is ensured.

[0022] In the above technical solution, further, a valve is rotatably installed on the sewage discharge pipe, a dust-proof net is fixedly installed at the top of the air suction pipe, and the bottom of the sealing cover contacts the top of the rotating rod and the top of the limiting rod.

[0023] In this technical solution, when the valve is rotated and opened, the liquid in the sealed water tank will be discharged from the sewage discharge pipe; the dust is blocked by the provided dust-proof net to ensure that the sealing cover can limit a plurality of limiting rods.

[0024] In the above technical solution, further, the cross-sectional shape of the limiting groove and the cross-sectional shape of the limiting rod are both trapezoidal structures, and the cross-sectional shape of the scraping blade is a triangular structure.

[0025] In this technical solution, the trapezoidal structure ensures that the limiting rod is more stable after being inserted into the limiting groove; it is ensured that the scraping blade can scrape off the dirt on the inner wall of the sealed water tank and the dirt at the bottom of the sealing cover cleanly.

[0026] The beneficial effects of the present utility model are:

[0027] Through the cooperation among the provided rotating rod, sealing cover, fixed rod, limiting rod, scraping blade, limiting groove and driving assembly, this dust-proof and explosion-proof breathing valve ensures that all the dirt on the inner side wall and the bottom of the sealed water tank can be scraped off cleanly, and moreover, the dirt at the bottom of the sealing cover can be scraped off cleanly. At the same time, the scraping blade can be disassembled and replaced to prevent the serious wear of the scraping blade from affecting the scraping effect. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0029] Figure 2 It is a schematic diagram of the internal structure of the sealed water tank in the present utility model;

[0030] Figure 3 It is a schematic diagram of the exploded structure of the rotating rod and the limiting rod in the present utility model;

[0031] Figure 4 It is the present utility model Figure 3 The enlarged structure schematic diagram at A in;

[0032] Figure 5 It is a schematic diagram of the exploded structure of the fixed rod and the scraping blade in the present utility model;

[0033] Figure 6 This is a schematic diagram of the internal structure of the rotating rod in the present utility model.

[0034] The markings in the figure are indicated as follows:

[0035] 1. Explosion-proof breather valve body; 2. Sealing cover; 3. Motor; 4. Suction pipe; 5. Sealing water tank; 6. Rotating rod; 7. Rectangular groove; 8. Drain pipe; 9. Scraping blade; 10. Fixed rod; 11. Limiting rod; 12. Limiting groove; 13. Tightening bolt; 14. Rectangular block. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0039] It should be noted that in the description of this application, the orientation or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description. Without contrary explanations, these directional terms do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the protection scope of this application; the directional terms "inside, outside" refer to the inside and outside relative to the contours of the respective components themselves.

[0040] It should be noted that in this application, the term "comprising", "including" or any other variants thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0041] Embodiment 1:

[0042] Please refer to Figure 1 - Figure 6 as shown, this embodiment provides an explosion-proof and dust-proof breathing valve, which includes an explosion-proof breathing valve body 1. A sealing water tank 5 is provided on one side of the explosion-proof breathing valve body 1, and further includes:

[0043] a rotating rod 6, the rotating rod 6 is rotatably installed in the sealing water tank 5. A plurality of limiting grooves 12 are provided on the peripheral side wall of the rotating rod 6. A limiting rod 11 is inserted and installed in the limiting groove 12. A fixing rod 10 is fixedly installed on the side of the limiting rod 11 away from the rotating rod 6. A scraping blade 9 in contact with the inner wall of the sealing water tank 5 is fixedly installed on the fixing rod 10. A sealing cover 2 is provided on the top of the sealing water tank 5, and the bottom of the sealing cover 2 is in contact with the top of the scraping blade 9;

[0044] a driving assembly, the driving assembly is located on the sealing cover 2 and is used to drive the rotating rod 6 to rotate;

[0045] The suction pipe 4 is fixedly installed at the bottom of the sealed water tank 5 and is located on one side of the rotating rod 6. One end of the suction pipe 4 penetrates through the bottom of the sealed water tank 5 and extends to the outside. A sewage discharge pipe 8 is fixedly installed at the bottom of the sealed water tank 5 and on the other side of the rotating rod 6, and one end of the sewage discharge pipe 8 penetrates through the bottom of the sealed water tank 5 and extends to the outside.

[0046] Among them, during daily use, through the set driving component, the driving component drives the rotating rod 6 to rotate. Subsequently, the rotating rod 6 will drive a number of limiting rods 11 to rotate. Subsequently, the limiting rods 11 will drive the fixing rod 10 to rotate, and the fixing rod 10 will drive the scraping blade 9 to rotate. During the rotation of the scraping blade 9, the scraping blade 9 will contact the inner side wall and the bottom of the sealed water tank 5. At the same time, the scraping blade 9 will contact the bottom of the sealed cover 2. During the rotation process, the dirt on the sealed cover 2 and the sealed water tank 5 can be scraped off, avoiding dirt adhering to the inner wall of the sealed water tank 5 and also avoiding dirt adhering to the bottom of the sealed cover 2. There is no need for personnel to manually clean the dirt, which is relatively convenient.

[0047] When the scraping blade 9 needs to be replaced after long-term use, the personnel remove the sealed cover 2 from the top of the sealed water tank 5. At this time, the sealed cover 2 will be released from fixation. Subsequently, the personnel lift the sealed cover 2 upwards, and the sealed cover 2 will drive the motor 3 to move upwards. Subsequently, the rectangular block 14 will move upwards in the rectangular groove 7 until the rectangular block 14 is completely withdrawn from the rectangular groove 7. At this time, a number of limiting rods 11 will be released from fixation. The personnel pull the fixing rod 10 upwards. Subsequently, the fixing rod 10 will drive the limiting rods 11 to move upwards in the corresponding limiting grooves 12. At this time, the scraping blade 9 on the fixing rod 10 will also move upwards until the limiting rods 11 are completely withdrawn from the corresponding limiting grooves 12. At this time, the scraping blade 9 will be disassembled. When installing a new scraping blade 9, the personnel align the limiting rods 11 with the corresponding limiting grooves 12. At this time, the limiting rods 11 will be located directly above the corresponding limiting grooves 12. Subsequently, the limiting rods 11 are moved downwards so that the limiting rods 11 are inserted into the corresponding limiting grooves 12 until the limiting rods 11 can no longer move downwards. At this time, the new scraping blade 9 will contact the inner side wall and the bottom of the sealed water tank 5. Subsequently, the personnel place the sealed cover 2 directly above the sealed water tank 5 and align the rectangular block 14 with the rectangular groove 7. Subsequently, the sealed cover 2 is moved downwards so that the rectangular block 14 is inserted into the rectangular groove 7. At this time, the bottom of the sealed cover 2 will contact the top of the sealed water tank 5, and a number of limiting rods 11 will be fixed in the corresponding limiting grooves 12. Moreover, the new scraping blade 9 will contact the bottom of the sealed cover 2. Subsequently, the sealed cover 2 is installed on the top of the sealed water tank 5 and fixed again.

[0048] Embodiment 2:

[0049] This embodiment provides a dust-proof and explosion-proof breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The driving assembly includes:

[0050] A rectangular groove 7 is opened at the top of the rotating rod 6. A rectangular block 14 is inserted and installed in the rectangular groove 7. A motor 3 is fixedly installed at the top of the sealing cover 2, and the output end of the motor 3 penetrates through the sealing cover 2 and is coaxially connected to the rectangular block 14.

[0051] Among them, when the motor 3 is started, the output shaft of the motor 3 drives the rectangular block 14 to rotate. Subsequently, the rectangular block 14 will drive the rotating rod 6 to rotate.

[0052] Embodiment 3:

[0053] This embodiment provides a dust-proof and explosion-proof breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The output shaft of the motor 3 is rotatably connected to the sealing cover 2, and the sealing cover 2 is fixedly connected to the top of the sealing water tank 5 through a plurality of fastening bolts 13.

[0054] Among them, it is ensured that the motor 3 can operate normally; it is ensured that the sealing cover 2 can be disassembled from the top of the sealing water tank 5, and moreover, the sealing cover 2 can be installed on the top of the sealing water tank 5 more conveniently.

[0055] Embodiment 4:

[0056] This embodiment provides a dust-proof and explosion-proof breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. Both the fixed rod 10 and the scraping blade 9 are in a "U" - shaped structure.

[0057] Among them, the "U" - shaped structure ensures that the scraping blade 9 can scrape the dirt on the inner wall of the sealing water tank 5 and the dirt at the bottom of the sealing cover 2 clean.

[0058] Embodiment 5:

[0059] This embodiment provides a dust-proof and explosion-proof breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The fixed rod 10, the limiting rod 11, and the scraping blade 9 are of an integrally formed structure.

[0060] Among them, it is ensured that the structure between the fixed rod 10, the limiting rod 11, and the scraping blade 9 is stable.

[0061] Embodiment 6:

[0062] This embodiment provides a dust-proof and explosion-proof breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. A valve is rotatably installed on the sewage discharge pipe 8, a dust-proof net is fixedly installed at the top end of the air suction pipe 4, and the bottom of the sealing cover 2 contacts the top of the rotating rod 6 and the top of the limiting rod 11.

[0063] Among them, rotate and open the valve, and the liquid in the sealed water tank 5 will be discharged from the sewage pipe 8; the dust is blocked by the provided dust-proof net to ensure that the sealing cover 2 can limit a number of limit rods 11.

[0064] Embodiment 7:

[0065] This embodiment provides a dust-proof and explosion-proof breather valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The cross-sectional shapes of the limit groove 12 and the limit rod 11 are both trapezoidal structures, and the cross-sectional shape of the scraping blade 9 is a triangular structure.

[0066] Among them, the trapezoidal structure ensures that the limit rod 11 is more stable after being inserted into the limit groove 12; it ensures that the scraping blade 9 can scrape off the dirt on the inner wall of the sealed water tank 5 and the dirt on the bottom of the sealing cover 2.

[0067] Working principle: The main functions of the explosion-proof breather valve body 1 are to reduce oil evaporation loss, control the pressure of the storage tank, prevent external flames from entering, and have anti-freezing performance in cold regions. During daily use, start the motor 3, so that the output shaft of the motor 3 drives the rectangular block 14 to rotate. Subsequently, the rectangular block 14 will drive the rotating rod 6 to rotate. Subsequently, the rotating rod 6 will drive a number of limit rods 11 to rotate. Subsequently, the limit rods 11 will drive the fixed rod 10 to rotate, and the fixed rod 10 will drive the scraping blade 9 to rotate. During the rotation of the scraping blade 9, the scraping blade 9 will contact the inner side wall and the bottom of the sealed water tank 5. At the same time, the scraping blade 9 will contact the bottom of the sealing cover 2. During the rotation, it can scrape off the dirt on the sealing cover 2 and the sealed water tank 5, avoiding dirt adhering to the inner wall of the sealed water tank 5 and at the same time avoiding dirt adhering to the bottom of the sealing cover 2. There is no need for personnel to manually clean the dirt, which is more convenient;

[0068] When the wiper 9 needs to be replaced after long-term use, the operator uses a wrench to remove all the fastening bolts 13 at the top of the sealing cover 2 and the sealing water tank 5. At this time, the fixing of the sealing cover 2 will be released. Subsequently, the operator lifts the sealing cover 2 upward, and the sealing cover 2 will drive the motor 3 to move upward. Accordingly, the rectangular block 14 will move upward in the rectangular groove 7 until the rectangular block 14 is completely withdrawn from the rectangular groove 7. At this time, the fixing of several limiting rods 11 will be released. The operator pulls the fixing rod 10 upward, and accordingly, the fixing rod 10 will drive the limiting rod 11 to move upward in the corresponding limiting groove 12. At this time, the wiper 9 on the fixing rod 10 will also move upward until the limiting rod 11 is completely withdrawn from the corresponding limiting groove 12. At this time, the wiper 9 will be disassembled. When installing a new wiper 9, the operator aligns the limiting rod 11 with the corresponding limiting groove 12. At this time, the limiting rod 11 will be directly above the corresponding limiting groove 12. Subsequently, the limiting rod 11 is moved downward so that the limiting rod 11 is inserted into the corresponding limiting groove 12 until the limiting rod 11 can no longer move downward. At this time, the new wiper 9 will contact the inner wall and the bottom of the sealing water tank 5. Subsequently, the operator places the sealing cover 2 directly above the sealing water tank 5 and aligns the rectangular block 14 with the rectangular groove 7. Subsequently, the sealing cover 2 is moved downward so that the rectangular block 14 is inserted into the rectangular groove 7. At this time, the bottom of the sealing cover 2 will contact the top of the sealing water tank 5, and several limiting rods 11 will be fixed in the corresponding limiting grooves 12. Moreover, the new wiper 9 will contact the bottom of the sealing cover 2. Subsequently, the sealing cover 2 and the top of the sealing water tank 5 are fixed by using a wrench and several fastening bolts 13.

[0069] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims. All of them belong to the protection scope of the present application.

Claims

1. A dustproof and explosion-proof breathing valve, comprising an explosion-proof breathing valve body (1), wherein a sealing water tank (5) is provided on one side of the explosion-proof breathing valve body (1), characterized in that: Also includes: A rotating rod (6), the rotating rod (6) being rotatably mounted in the sealed water tank (5), a plurality of limiting grooves (12) being provided on the peripheral side wall of the rotating rod (6), a limiting rod (11) being inserted and installed in the limiting groove (12), a fixing rod (10) being fixedly mounted on the side of the limiting rod (11) away from the rotating rod (6), a scraper (9) being fixedly mounted on the fixing rod (10) and contacting the inner wall of the sealed water tank (5), a sealing cover (2) being provided on the top of the sealed water tank (5), the bottom of the sealing cover (2) being in contact with the top of the scraper (9); A driving assembly, the driving assembly is located on the sealing cover (2) and is used to drive the rotating rod (6) to rotate; An air intake pipe (4) is fixedly mounted at the bottom of the sealed water tank (5) and located on one side of the rotating rod (6), one end of the air intake pipe (4) passes through the bottom of the sealed water tank (5) and extends to the outside, and a sewage pipe (8) is fixedly mounted at the bottom of the sealed water tank (5) and located on the other side of the rotating rod (6), and one end of the sewage pipe (8) passes through the bottom of the sealed water tank (5) and extends to the outside.

2. A dust and explosion proof breathing valve according to claim 1, characterized in that: The drive assembly comprises: A rectangular groove (7) is provided at the top of the rotating rod (6), a rectangular block (14) is inserted and installed in the rectangular groove (7), a motor (3) is fixedly installed on the top of the sealing cover (2), and an output end of the motor (3) passes through the sealing cover (2) and is coaxially connected to the rectangular block (14).

3. A dust and explosion proof breathing valve according to claim 2, characterized in that: The output shaft of the motor (3) is rotatably connected to the sealing cover (2), and the sealing cover (2) is fixed to the top of the sealing water tank (5) via a plurality of fastening bolts (13).

4. The dust and explosion proof breathing valve according to claim 1, characterized in that: The fixing rod (10) and the scraper blade (9) are both in a U-shaped structure.

5. The dust and explosion proof breathing valve according to claim 1, characterized in that: The fixing rod (10), the limiting rod (11) and the scraper (9) are an integrally formed structure.

6. The dust and explosion proof breathing valve according to claim 1, characterized in that: A valve is rotatably mounted on the sewage pipe (8), a dust screen is fixedly mounted on the top of the air intake pipe (4), and the bottom of the sealing cover (2) contacts the top of the rotating rod (6) and the top of the limiting rod (11).

7. The dust and explosion proof breathing valve according to claim 1, characterized in that: The cross-sectional shape of the limiting groove (12) and the cross-sectional shape of the limiting rod (11) are both trapezoidal structures, and the cross-sectional shape of the scraper (9) is triangular.

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