Protection type self-cleaning non-return device for pneumatic conveying

Abstract

The utility model discloses a protective self-cleaning non-return device for pneumatic conveying, which belongs to the technical field of pneumatic conveying and comprises a valve body, the upper end of the valve body is connected with a combined ash return prevention component, the inside of the valve body is connected with a valve body self-opening and closing component, the combined ash return prevention component comprises a mounting component and a filter component, and the filter component is connected with the valve body self-opening and closing component. The mounting assembly is connected to the upper end of the valve body, the filtering assembly is connected to the interior of the upper end of the mounting assembly, opening and closing of an air inlet of the valve body are automatically controlled through the valve body self-opening and closing assembly, and the valve body self-opening and closing assembly is convenient to disassemble and assemble, so that the repairing cost is low; therefore, dust is prevented from entering the check valve, and the detachable mounting assembly can be conveniently disassembled and assembled through the valve element assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic conveying, and particularly relates to a protective self-cleaning check valve device for pneumatic conveying. Background Art

[0002] Check valves are widely used in pipeline systems in multiple industrial fields such as petroleum, chemical industry, metallurgy, electric power, and food. They play a crucial role in maintaining the smooth operation and safety of industrial processes. These valves not only need to cope with various working conditions, such as high-flow and high-pressure environments, but also need to meet the strict requirements for sealing and reliability in specific production and processing processes.

[0003] In the prior art, check valves in the field of pneumatic conveying cannot prevent materials from entering the check valve, which will cause wear of the check valve, resulting in problems such as the valve being unable to open normally and the valve getting stuck. If a separate filter is added, it will affect the airtightness. In a pneumatic conveying system, each additional point is an additional potential failure point, and disassembly and assembly during maintenance and repair will become cumbersome.

[0004] Based on this, the utility model designs a protective self-cleaning check valve device for pneumatic conveying to solve the above problems. Content of the Utility Model

[0005] In view of the above-mentioned drawbacks of the prior art, the utility model provides a protective self-cleaning check valve device for pneumatic conveying.

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0007] A protective self-cleaning check valve device for pneumatic conveying includes a valve body;

[0008] The upper end of the valve body is connected with a combined anti-backflow ash component for combining with the valve body and filtering the gas entering the valve body;

[0009] The inside of the valve body is connected with a valve body self-switching component for automatically opening and closing the air inlet of the valve body;

[0010] The combined anti-backflow ash component includes an installation component and a filtering component. The upper end of the valve body is connected with the installation component, and the filtering component is connected inside the upper end of the installation component.

[0011] Furthermore, the installation component includes an installation cap and a first fixing plate. The outer wall of the upper end of the valve body is threadedly connected with the inner wall of the lower end of the installation cap. The upper end inner wall of the installation cap is threadedly connected with the first fixing plate. A filtering component is connected between the first fixing plate and the top plate of the installation cap.

[0012] Furthermore, the filtering component includes a supporting ring and a filter screen. A supporting ring is clamped between the first fixing plate and the top plate of the mounting cap, and the outer end of the filter screen is fixedly connected to the inner end of the supporting ring.

[0013] Furthermore, a number of groups of notches for ventilation are provided on both the first fixing plate and the top plate of the mounting cap.

[0014] Furthermore, the valve body self-switching component includes a detachable mounting component and a valve core component. The upper end inside the valve body is connected with the detachable mounting component, and the middle part of the detachable mounting component is connected with the valve core component.

[0015] Furthermore, the detachable mounting component includes a second fixing plate, ventilation holes and a limiting sliding groove. The second fixing plate is threadedly connected to the inner wall of the upper end of the valve body. A number of groups of ventilation holes are provided on the second fixing plate. A limiting sliding groove is provided in the middle of the second fixing plate. The inner wall of the second fixing plate is connected with the valve core component, and the bottom of the second fixing plate is connected with the valve core component.

[0016] Furthermore, the valve core component includes a sliding rod, a blocking plate and a spring. The sliding rod passes through the limiting sliding groove and is slidably connected with the limiting sliding groove. The bottom of the sliding rod is fixedly connected with the blocking plate. The blocking plate is in contact connection with the inner bottom of the valve body. A spring is fixedly connected between the top of the blocking plate and the bottom of the second fixing plate. The sliding rod passes through the spring.

[0017] The utility model has the following technical effects:

[0018] 1. When the gas outside the valve body enters the inside of the valve body, the gas passes through the ventilation notches on the top plate of the mounting cap, and the dust is isolated outside the filter screen under the filtration of the filter screen. At this time, the filtered gas enters the inside of the valve body through the ventilation notches on the first fixing plate, thereby realizing the filtration of the gas entering the check valve when the check valve is closed, preventing dust from entering the inside of the check valve and affecting the normal operation of the check valve. When the gas enters from the air inlet of the valve body, the gas passes through the first fixing plate and blows the gas attached to the filter screen out of the mounting cap. When the filter screen is blocked, rotate the mounting cap and remove the mounting cap. At this time, rotate the first fixing plate and remove the first fixing plate. At this time, the filter screen and the supporting ring can be taken out and the filter screen can be cleaned. After cleaning, the supporting ring and the filter screen are put back into the upper end of the mounting cap and the first fixing plate is reinstalled so that the first fixing plate and the top plate of the mounting cap clamp the supporting ring, thereby realizing the simple disassembly of the supporting ring and the filter screen, and further realizing the simple replacement and repair of the filter screen. And because the mounting cap is directly assembled on the valve body, it can effectively prevent materials from entering the valve body and avoid material blockage of the check valve. The inside of the mounting cap is designed as a structure separable from the valve body, and the mounting cap can be disassembled and installed separately during maintenance, and the maintenance cost is low.

[0019] 2. When the gas squeezes the sealing disc through the air inlet hole at the lower end of the valve body, the sealing disc moves upward under the limiting and guiding of the sliding rod and the limiting chute. At this time, the sealing disc squeezes the spring, causing the spring to undergo compressive deformation. When the sealing disc disengages from the valve body floor, the gas enters the valve body through the air inlet hole at the lower end of the valve body, passes through the ventilation hole into the combined anti-backflow ash component, and is discharged through the combined anti-backflow ash component. When the gas supply to the valve body stops, under the action of the spring restoration force, the spring drives the sealing disc to move downward and block the air inlet of the valve body, thus achieving the first-time blockage of the air inlet of the valve body, preventing the gas from flowing back, and realizing the automatic opening and closing of the air inlet hole of the valve body. When the check valve fails, only need to rotate the second fixed disc to remove the second fixed disc. At this time, the installation cap, sealing disc, sliding rod, and spring can all be taken out for repair, realizing the simple disassembly and assembly of the internal components of the valve body, and the disassembly and repair cost is relatively low. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Three-dimensional structure of a protective self-cleaning check valve device for pneumatic conveying of the present invention Figure two

[0022] Figure 2 Schematic diagram of the sliding rod structure of a protective self-cleaning check valve device for pneumatic conveying of the present invention Figure one ;

[0023] Figure 3 Schematic diagram of the sliding rod structure of a protective self-cleaning check valve device for pneumatic conveying of the present invention Figure two ;

[0024] Figure 4 Schematic diagram of the filter component structure of a protective self-cleaning check valve device for pneumatic conveying of the present invention Figure two

[0025] Figure 5 Schematic diagram of the first fixed disc structure of a protective self-cleaning check valve device for pneumatic conveying of the present invention Figure two

[0026] Figure 6 Schematic diagram of the detachable installation component structure of a protective self-cleaning check valve device for pneumatic conveying of the present invention Figure two

[0027] Figure 7 The structural schematic diagram of the plugging disc of a protective self-cleaning check valve device for pneumatic conveying according to the present utility model.

[0028] In the attached drawings: 1. Valve body; 2. Combined anti-backflow ash component, 21. Installation component, 211. Installation cap, 212. First fixing plate; 22. Filter component, 221. Support ring, 222. Filter screen; 3. Valve body self-switching component, 31. Detachable installation component, 311. Second fixing plate, 312. Vent hole, 313. Limit sliding groove; 32. Spool component, 321. Slide bar, 322. Plugging disc, 323. Spring. Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] The present utility model will be further described below with reference to the embodiments.

[0031] Embodiment

[0032] Please refer to the attached specification Figure 1-7 , a protective self-cleaning check valve device for pneumatic conveying, comprising a valve body 1;

[0033] The upper end of the valve body 1 is connected with a combined anti-backflow ash component 2 for combining with the valve body 1 and filtering the gas entering the valve body 1;

[0034] The inside of the valve body 1 is connected with a valve body self-switching component 3 for automatically opening and closing the air inlet of the valve body 1;

[0035] The cross-sectional diameter of the upper end of the valve body 1 is smaller, and the cross-sectional diameter of the lower end of the valve body 1 is larger;

[0036] The combined anti-backflow ash component 2 includes an installation component 21 and a filter component 22. The upper end of the valve body 1 is connected with the installation component 21, and the inside of the upper end of the installation component 21 is connected with the filter component 22;

[0037] The installation component 21 includes an installation cap 211 and a first fixing plate 212. The outer wall of the upper end of the valve body 1 is threadedly connected with the inner wall of the lower end of the installation cap 211. The upper end inner wall of the installation cap 211 is threadedly connected with the first fixing plate 212. A filter component 22 is connected between the first fixing plate 212 and the top plate of the installation cap 211;

[0038] The filtering component 22 includes a supporting ring 221 and a filter screen 222. A supporting ring 221 is clamped between the first fixing plate 212 and the top plate of the mounting cap 211, and the outer end of the filter screen 222 is fixedly connected to the inner end of the supporting ring 221;

[0039] A plurality of groups of notches for ventilation are provided on both the first fixing plate 212 and the top plate of the mounting cap 211;

[0040] When the gas outside the valve body 1 enters the inside of the valve body 1, the gas passes through the ventilation notches on the top plate of the mounting cap 211, and the dust is isolated outside the filter screen 222 under the filtration of the filter screen 222. At this time, the filtered gas enters the inside of the valve body 1 through the ventilation notches on the first fixing plate 212, thereby realizing the filtration of the gas entering the check valve when the check valve is closed, preventing dust from entering the inside of the check valve and affecting the normal operation of the check valve. When the gas enters from the air inlet of the valve body 1, the gas passes through the first fixing plate 212 and blows the gas attached to the filter screen 222 out of the mounting cap 211. When the filter screen 222 is blocked, rotate the mounting cap 211 and remove the mounting cap 211. At this time, rotate the first fixing plate 212 and remove the first fixing plate 212. At this time, the filter screen 222 and the supporting ring 221 can be taken out and the filter screen 222 can be cleaned. After cleaning, the supporting ring 221 and the filter screen 222 are reinstalled at the upper end of the mounting cap 211 and the first fixing plate 212 is reinstalled so that the first fixing plate 212 and the top plate of the mounting cap 211 clamp the supporting ring 221, thereby realizing the simple disassembly of the supporting ring 221 and the filter screen 222, and further realizing the simple replacement and repair of the filter screen 222. And because the mounting cap 211 is directly assembled on the valve body 1, it can effectively prevent materials from entering the valve body 1 and avoid material blockage of the check valve. The inside of the mounting cap 211 is designed to be a separable structure from the valve body 1, and the mounting cap 211 can be disassembled separately during maintenance, and the maintenance cost is low.

[0041] The valve body self-switching component 3 includes a detachable mounting component 31 and a valve core component 32. The detachable mounting component 31 is connected to the upper end inside the valve body 1, and the valve core component 32 is connected to the middle of the detachable mounting component 31;

[0042] The detachable mounting component 31 includes a second fixing plate 311, ventilation holes 312 and limit sliding grooves 313. The second fixing plate 311 is threadedly connected to the inner wall of the upper end of the valve body 1. A plurality of groups of ventilation holes 312 are provided on the second fixing plate 311. A limit sliding groove 313 is provided in the middle of the second fixing plate 311. The inner wall of the second fixing plate 311 is connected to the valve core component 32, and the bottom of the second fixing plate 311 is connected to the valve core component 32;

[0043] The valve core assembly 32 includes a slide rod 321, a blocking disk 322 and a spring 323, the slide rod 321 passes through the limiting slide groove 313 and is slidably connected to the limiting slide groove 313, the bottom of the slide rod 321 is fixedly connected to the blocking disk 322, the blocking disk 322 is in contact with the bottom of the valve body 1, and a spring 323 is fixedly connected between the top of the blocking disk 322 and the bottom of the second fixed disk 311, and the slide rod 321 passes through the spring 323;

[0044] The spring 323 is always in a compressed deformation state;

[0045] When the gas squeezes the blocking disk 322 through the air inlet at the lower end of the valve body 1, the blocking disk 322 moves upward under the limiting guidance of the slide rod 321 and the limiting slide groove 313. At this time, the blocking disk 322 squeezes the spring 323 to cause the spring 323 to be compressed and deformed. When the blocking disk 322 is separated from the floor of the valve body 1, the gas enters the interior of the valve body 1 through the air inlet at the lower end of the valve body 1, and the gas enters the interior of the combined anti-dust return component 2 through the vent hole 312 and is discharged through the combined anti-dust return component 2. When the air supply to the valve body 1 is stopped, the spring 323 returns to its original position. Under the action of force, the spring 323 drives the sealing disk 322 to move downward and seals the air inlet of the valve body 1, thereby achieving the first-time sealing of the air inlet of the valve body 1, preventing the backflow of gas, and realizing the automatic opening and closing of the air inlet hole of the valve body 1. When the check valve fails, it is only necessary to rotate the second fixed disk 311 to check the second fixed disk 311. At this time, the mounting cap 211, the sealing disk 322, the sliding rod 321 and the spring 323 can be taken out for repair, thereby achieving easy disassembly and assembly of the internal workpieces of the valve body 1, and the disassembly and repair cost is low.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective self-cleaning check device for pneumatic conveying, comprising a valve body (1), characterized in that: The upper end of the valve body (1) is connected to a combined anti-ash return component (2) for combining with the valve body (1) and filtering the gas entering the valve body (1); The valve body (1) is internally connected to a valve body self-opening assembly (3) for automatically opening and closing the air inlet of the valve body (1); The combined anti-dust return assembly (2) comprises a mounting assembly (21) and a filter assembly (22); the upper end of the valve body (1) is connected to the mounting assembly (21), and the upper end of the mounting assembly (21) is internally connected to the filter assembly (22).

2. The protective self-cleaning non-return device for pneumatic conveying according to claim 1, characterized in that: The mounting assembly (21) comprises a mounting cap (211) and a first fixed disk (212); the upper outer wall of the valve body (1) is threadedly connected to the lower inner wall of the mounting cap (211); the upper end of the inner wall of the mounting cap (211) is threadedly connected to the first fixed disk (212); and a filter assembly (22) is connected between the first fixed disk (212) and the top plate of the mounting cap (211).

3. The protective self-cleaning non-return device for pneumatic conveying according to claim 2, characterized in that: The filter assembly (22) comprises a supporting ring (221) and a filter screen (222); the supporting ring (221) is clamped between the first fixing plate (212) and the top plate of the mounting cap (211); and the outer end of the filter screen (222) is fixedly connected to the inner end of the supporting ring (221).

4. The protective self-cleaning non-return device for pneumatic conveying according to claim 3, characterized in that: The first fixing plate (212) and the top plate of the mounting cap (211) are both provided with a plurality of groups of notches for ventilation.

5. The protective self-cleaning non-return device for pneumatic conveying according to claim 4, characterized in that: The valve body self-switching assembly (3) comprises a detachable mounting assembly (31) and a valve core assembly (32); the internal upper end of the valve body (1) is connected to the detachable mounting assembly (31), and the middle part of the detachable mounting assembly (31) is connected to the valve core assembly (32).

6. The protective self-cleaning non-return device for pneumatic conveying according to claim 5, characterized in that: The detachable installation component (31) comprises a second fixed disk (311), a vent hole (312) and a limiting slide groove (313); the second fixed disk (311) is threadedly connected to the inner wall of the upper end of the valve body (1); a plurality of groups of vent holes (312) are provided on the second fixed disk (311); a limiting slide groove (313) is provided in the middle of the second fixed disk (311); the inner wall of the second fixed disk (311) is connected to the valve core component (32); and the bottom of the second fixed disk (311) is connected to the valve core component (32).

7. The protective self-cleaning non-return device for pneumatic conveying according to claim 6, characterized in that: The valve core assembly (32) includes a slide rod (321), a blocking disk (322) and a spring (323); the slide rod (321) passes through a limiting slide groove (313) and is slidably connected to the limiting slide groove (313); the bottom of the slide rod (321) is fixedly connected to a blocking disk (322); the blocking disk (322) is in contact with the bottom of the valve body (1); a spring (323) is fixedly connected between the top of the blocking disk (322) and the bottom of the second fixed disk (311); and the slide rod (321) passes through the spring (323).

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