CN217457942U - Valve core communicated pneumatic dredging device - Google Patents
Valve core communicated pneumatic dredging device Download PDFInfo
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- CN217457942U CN217457942U CN202221013494.3U CN202221013494U CN217457942U CN 217457942 U CN217457942 U CN 217457942U CN 202221013494 U CN202221013494 U CN 202221013494U CN 217457942 U CN217457942 U CN 217457942U
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Abstract
The utility model discloses a valve core communicated pneumatic dredging device, which relates to pneumatic conveying equipment applied to powder and granular materials, and comprises a valve body, wherein one end of the valve body is provided with a valve cover, a large piston cavity is arranged near the valve cover in the valve body, the other end of the valve body is provided with a small piston cavity, and the large piston cavity and the small piston cavity are connected through a communicating cavity; the big piston is arranged in the big piston cavity, the small piston and the pressure spring seat are arranged in the small piston cavity, the valve rod is arranged in the communicating cavity, the valve rod is provided with a valve rod axial hole and a valve rod radial hole which are communicated, and the small piston cavity and the communicating cavity are communicated through the communicating hole; the pipeline conveying condition can be monitored in real time, the state of the valve core communicated type pneumatic dredging device can be automatically adjusted according to the blockage or unblocked condition of materials in the pipeline, and the pipeline conveying device is ingenious in design.
Description
Technical Field
The utility model relates to a be applied to pneumatic transport powder or granular materials's equipment of removing obstacles, case UNICOM formula strength pull throughs specifically says so.
Background
In industries such as building material processing, chemical raw material transmission, grain conveying, metallurgical raw material conveying, environment-friendly energy and the like, materials are conveyed in a mode of an air supply pipeline; the mode can avoid the problem of secondary pollution caused by materials in exposed environments such as a conveying belt and the like, but when the materials are conveyed by using a traditional air supply pipeline, the local blockage phenomenon in the conveying pipeline is easy to occur due to the properties of the raw materials such as material specific gravity, shape, material friction and the like, even the blockage of the conveying pipeline is caused, so that the conveying efficiency is low, and the failure rate is high. Therefore, how to timely and efficiently remove the partially blocked materials in the pipeline is a problem which needs to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a case UNICOM's formula strength pull throughs, its simple structure is compact, design benefit, gas circuit are short, the reaction is sensitive, when the pipeline takes place the material and blocks up, can blow the material fast open, realizes pipeline normal transportation material work.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
the valve core communication type pneumatic dredging device comprises a valve body, wherein a valve cover is arranged at one end of the valve body, a large piston cavity is arranged at one end, positioned on the valve cover, in the valve body, a small piston cavity is arranged at the other end of the valve body, and the large piston cavity and the small piston cavity are connected through a communication cavity; a large piston is arranged in a large piston cavity, a small piston and a pressure spring seat are arranged in a small piston cavity, a valve rod is arranged in a communicating cavity, the valve rod is in contact with the small piston but not connected, a valve rod axial hole and a valve rod radial hole which are communicated are formed in the valve rod, the valve rod axial hole is communicated with the large piston cavity, the small piston cavity is communicated with the communicating cavity through a communicating hole, a pressure spring is arranged in a small piston cavity, one end of the pressure spring is connected with the pressure spring seat, the other end of the pressure spring is matched with the small piston, and an air inlet is formed in the pressure spring seat; the valve cover is provided with a valve hole, and the valve hole is connected with a check valve; the cross-sectional area of the large piston is larger than that of the small piston.
Preferably, the periphery of the large piston is provided with a large sealing ring.
Preferably, a sealing cavity is arranged between the communication cavity and the large piston cavity, the diameter of the sealing cavity is larger than that of the communication cavity and smaller than that of the large piston cavity, and the sealing cavity enables the communication cavity to be communicated with the large piston cavity; the periphery of the valve rod is provided with a sealing convex edge, the sealing convex edge is positioned in the sealing cavity, the sealing ring is arranged on the periphery of the sealing convex edge, and the sealing convex edge is matched with the sealing ring.
Preferably, the outer side of the pressure spring seat is in threaded connection with the valve body.
Preferably, the through hole is provided with a pressure gauge, and the pressure gauge is arranged on the valve body.
Preferably, a flow adjusting screw is arranged on the communicating hole and is in threaded connection with the valve body, and the flow adjusting screw controls the flow of the small piston cavity to the communicating cavity.
Preferably, the check valve is provided with a shell, a ventilation cavity is formed in the shell, a spring, a spherical plug and a sealing ring are installed in the ventilation cavity, one end of the spring is connected with the spherical plug, and the spherical plug can be matched and sealed with the sealing ring.
Compared with the prior art, the utility model has the following advantages:
the big piston cavity and the small piston cavity of the valve core communicating type pneumatic dredging device are communicated by the communicating hole, the valve rod axial hole and the valve rod radial hole, so that the gas circuit can be effectively shortened, and the on-way resistance is reduced, thereby the valve body reaction is more sensitive, in addition, the processing difficulty of the valve body can be reduced, the production cost is reduced, and the gas circuit in the valve is also convenient to clean and maintain; the pipeline conveying condition can be monitored in real time, the state of the valve core communicated type pneumatic dredging device is automatically adjusted according to the blockage or unblocked condition of materials in the pipeline, the design is ingenious, when the materials in the pipeline are blocked, the communicated cavity is directly connected with the high-pressure gas source and the conveying system, a large amount of high-pressure gas is directly filled into the conveying pipeline from the high-pressure gas source, instantaneous inflation and sensitive reaction are realized, the blockage removing efficiency is greatly improved, the conveying capacity of the conveying pipeline is ensured, and the conveying cost is reduced. When the materials in the pipeline are not blocked, the valve core communicated pneumatic dredging device keeps the radial hole of the valve rod and the axial hole of the valve rod communicated through the communicating hole, so that the ventilation in the valve body is ensured, the use amount of gas is reduced, and the production cost is saved.
The valve core communicated pneumatic dredging device can realize the totally-enclosed conveying of materials, and avoid the secondary pollution of the materials; the valve core communicated pneumatic dredging device can be installed as required according to the length of the conveying distance in actual production, normal conveying of long-distance powdery or blocky materials is achieved, and the problems that materials cannot be blocked in the past, pipelines are cut off, and manpower and material resources loss and environmental pollution are caused are avoided.
Drawings
FIG. 1 is a schematic structural view of a valve core communicating type pneumatic dredge device of the present invention; fig. 2 is an enlarged structural schematic view of the check valve.
Reference numerals are as follows:
the valve comprises a valve body 1, a valve cover 3, an air inlet 2, a pressure gauge 4, a large piston 5, a small piston 6, a valve rod radial hole 7, a check valve 8, a pressure spring seat 9, a pressure spring 10, a connecting hole 11, a flow adjusting screw 12, a large sealing ring 13, a middle sealing ring 14, a sealing cavity 15, a valve rod axial hole 16, a valve hole 17, a valve rod 18, a sealing convex edge 19, a connecting cavity 20, a large piston cavity 21, a small piston cavity 22, an exhaust hole 23, a shell 80, a vent cavity 81, a spring 82, a spherical plug 83 and a sealing ring 84.
Detailed Description
The valve core communicated pneumatic dredging device shown in figure 1 comprises a valve body 1. One end of the valve body 1 is provided with a valve cover 3, one end of the valve body 1, which is positioned at the valve cover 3, is provided with a large piston cavity 21, and the other end of the valve body 1 is provided with a small piston cavity 22. The large piston chamber 21 and the small piston chamber 22 are connected by a communication chamber 20. The big piston 5 is arranged in the big piston cavity 21, and the small piston 6 and the pressure spring seat 9 are arranged in the small piston cavity 22. The valve rod 18 is arranged in the communicating cavity 20, and the valve rod 18 is contacted with the small piston 6 but not connected with the small piston, so that the processing difficulty and the cost can be reduced. The valve rod 18 is provided with a valve rod axial hole 16 and a valve rod radial hole 7 which are communicated, the valve rod axial hole 16 is communicated with the large piston cavity 21, so that the valve rod 18 becomes a passage for communicating the large piston cavity 21 and the small piston cavity 22, the production difficulty can be reduced, the on-way resistance can be reduced, high-pressure gas can be discharged more smoothly, and the materials at the blockage position can be dredged more effectively. The small piston cavity 22 is communicated with the communicating cavity 20 through the communicating hole 11, a pressure spring 10 is arranged in the small piston cavity 22, one end of the pressure spring 10 is connected with a pressure spring seat 9, the other end of the pressure spring is connected with the small piston 6, and an air inlet 2 is arranged on the pressure spring seat 9; the valve cover 3 is provided with a valve hole 17, and the valve hole 17 is connected with a check valve 8; the cross-sectional area of the large piston 5 is larger than that of the small piston 6. The valve body 1 is provided with an exhaust hole 23, and the exhaust hole 23 effectively reduces the air resistance of the movement of the large piston cavity 21.
The communicating hole 11 can be provided with a flow adjusting screw 12, and the flow adjusting screw 12 controls the air supply flow of the small piston cavity 22 to the communicating cavity 20.
High-pressure gas and powder (granular) materials are conveyed through a conveying pipeline, and the valve core communicated type pneumatic dredging device is arranged on the side wall of the conveying pipeline at intervals. And (3) supplementing an air source to the conveying pipeline, or blowing away the blocked material by high-pressure air when the material is blocked so that the material is continuously conveyed in the conveying pipeline. When the pipeline is unblocked, the valve core communicated type pneumatic dredging device is in a non-opening state, the communicating hole 11 is communicated with the valve rod axial hole 16 through the valve rod radial hole 7, the ventilation in the valve body 1 is kept, and the pressure intensity in each position in the valve body is equal; at the moment, the air pressure borne by the large piston is smaller than the sum of the air pressure borne by the small piston and the pressure of the pressure spring, at the moment, the small piston 6 blocks the communication cavity 20 to be communicated with the small piston cavity 22, high-pressure air enters from the air inlet 2, sequentially flows through the small piston cavity 22, the communication hole 11, the valve rod radial hole 7, the valve rod axial hole 16 and the large piston cavity 21, and then flows out of the valve body through the valve hole 17. The check valve 8 arranged on the valve hole 17 can make the gas flow out of the valve body 1 in one way and prevent the material in the conveying pipeline from flowing to the valve body 1, thus protecting the valve body 1;
when the pipeline is partially blocked, the pressure in the valve body is increased, when the pressure borne by the large piston 5 is greater than the sum of the air pressure borne by the small piston 6 and the pressure of the pressure spring 10, the large piston 5 pushes the small piston 6 to the right through the valve rod 18 as shown in fig. 1, at the moment, the dredging device is in an open state, the small piston 6 is separated from the communication cavity 20, the communication cavity 20 is communicated with the small piston cavity 22, a large amount of high-pressure gas in the small piston cavity 22 directly enters the large piston cavity 21 from the valve rod axial hole 16 and passes through the valve hole 17 and the check valve 8 to enter the conveying pipeline to blow away the blocked materials, so that the normal conveying of the materials is ensured; at the moment, the pressure in the valve body is reduced, the air pressure borne by the small piston 6 and the elastic force of the pressure spring 10 are larger than the air pressure borne by the large piston 5 again, the small piston 6 pushes the valve rod 18 to reset the large piston 5, the valve core communicated type pneumatic dredging device enters a non-working state again, the valve rod radial hole 7 is communicated with the valve rod axial hole 16 through the communicating hole 11, ventilation in the valve body 1 is ensured, and therefore when a conveying pipeline is not blocked, the flow of gas is small, and the production cost can be reduced.
The periphery of the large piston 5 can be provided with the large sealing ring 13, so that the gas in the large piston cavity 21 can only diffuse through the axial hole 16 of the valve rod, the sealing performance of the large piston 5 is improved, when material blockage occurs, a small amount of gas can quickly enter a conveying pipeline through the valve hole and the check valve, and the blocked material in the pipeline is opened;
a sealing cavity 15 is arranged between the communicating cavity 20 and the large piston cavity 21, and the communicating cavity 20 is communicated with the large piston cavity 21 through the sealing cavity 15; a sealing convex edge 19 is arranged on the sealing cavity 15, a middle sealing ring 14 is arranged on the periphery of the sealing convex edge 19, and the sealing convex edge 19 is matched with the sealing ring 14 to play an effective sealing role;
the outer side of the pressure spring seat 9 is in threaded connection with the valve body 1, so that the position of the pressure spring seat 9 can be adjusted, and the position of the small piston 6 can be adjusted;
the pressure gauge 4 is arranged on the communicating hole 11, the pressure in the valve body 1 is monitored, the pressure condition in the valve body 1 is known, and the state of the material in the valve body 1 or/and the conveying pipeline is monitored in real time.
The non-return valve 8 may be a conventional one-way valve. The following structure is also possible: the check valve 8 is provided with a shell 80, a ventilation cavity 81 is formed in the shell 80, a spring 82, a spherical plug 83 and a sealing ring 84 are arranged in the ventilation cavity 81, one end of the spring 82 is connected with the spherical plug 83, and the spherical plug 83 can be matched and sealed with the sealing ring 84; the structure can better control the flow of high-pressure air, prevent materials in the pipeline from entering the valve body and play a role in effectively protecting the valve body.
The technical contents not described in detail in the present invention are all known techniques.
Claims (7)
1. Case UNICOM formula strength pull throughs, including valve body (1), its characterized in that: one end of the valve body (1) is provided with the valve cover (3), one end of the valve body (1) positioned at the valve cover (3) is provided with a large piston cavity (21), the other end of the valve body (1) is provided with a small piston cavity (22), and the large piston cavity (21) is connected with the small piston cavity (22) through a communication cavity (20); a large piston (5) is arranged in a large piston cavity (21), a small piston (6) and a pressure spring seat (9) are arranged in a small piston cavity (22), a valve rod (18) is arranged in a communicating cavity (20), the valve rod (18) is contacted with the small piston (6) but not connected, a valve rod axial hole (16) and a valve rod radial hole (7) which are communicated are formed in the valve rod (18), the valve rod axial hole (16) is communicated with the large piston cavity (21), the small piston cavity (22) is communicated with the communicating cavity (20) through a communicating hole (11), a pressure spring (10) is arranged in the small piston cavity (22), one end of the pressure spring (10) is connected with the pressure spring seat (9), the other end of the pressure spring is matched with the small piston (6), and an air inlet (2) is formed in the pressure spring seat (9); a valve hole (17) is formed in the valve cover (3), and the valve hole (17) is connected with the check valve (8); the cross-sectional area of the large piston (5) is larger than that of the small piston (6).
2. The valve core communicated pneumatic dredging device of claim 1, wherein: and a large sealing ring (13) is arranged on the periphery of the large piston (5).
3. The valve core linked pneumatic dredging device of claim 1, wherein: a sealing cavity (15) is formed between the communicating cavity (20) and the large piston cavity (21), the diameter of the sealing cavity (15) is larger than that of the communicating cavity (20) and smaller than that of the large piston cavity (21), and the communicating cavity (20) is communicated with the large piston cavity (21) through the sealing cavity (15); the periphery of the valve rod (18) is provided with a sealing convex edge (19), the sealing convex edge (19) is positioned in the sealing cavity (15), the periphery of the sealing convex edge (19) is provided with a middle sealing ring (14), and the sealing ring (14) is matched with the sealing cavity (15).
4. The valve core communicated pneumatic dredging device of claim 1, wherein: the outer side of the pressure spring seat (9) is in threaded connection with the valve body (1).
5. The valve core communicated pneumatic dredging device of claim 1, wherein: the pressure gauge (4) is arranged on the connecting through hole (11), and the pressure gauge (4) is installed on the valve body (1).
6. The valve core communicated pneumatic dredging device of claim 1, wherein: the flow adjusting screw (12) is arranged on the communicating hole (11), the flow adjusting screw (12) is in threaded connection with the valve body (1), and the flow adjusting screw (12) controls the flow of the small piston cavity (22) to the communicating cavity (20).
7. The valve core communicated pneumatic dredging device of claim 1, wherein: check valve (8) have casing (80), set up in casing (80) and ventilate chamber (81), install spring (82), globular stopper (83) and sealing ring (84) in ventilating chamber (81), the one end and the globular stopper (83) of spring (82) are connected, and globular stopper (83) can be sealed with sealing ring (84) cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221013494.3U CN217457942U (en) | 2022-04-27 | 2022-04-27 | Valve core communicated pneumatic dredging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221013494.3U CN217457942U (en) | 2022-04-27 | 2022-04-27 | Valve core communicated pneumatic dredging device |
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| Publication Number | Publication Date |
|---|---|
| CN217457942U true CN217457942U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221013494.3U Active CN217457942U (en) | 2022-04-27 | 2022-04-27 | Valve core communicated pneumatic dredging device |
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| CN (1) | CN217457942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108577A (en) * | 2023-09-20 | 2023-11-24 | 新心医疗器械(北京)有限公司 | Self-driven circulating type pneumatic reversing valve |
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2022
- 2022-04-27 CN CN202221013494.3U patent/CN217457942U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108577A (en) * | 2023-09-20 | 2023-11-24 | 新心医疗器械(北京)有限公司 | Self-driven circulating type pneumatic reversing valve |
| CN117108577B (en) * | 2023-09-20 | 2024-04-16 | 新心医疗器械(北京)有限公司 | Self-driven circulating type pneumatic reversing valve |
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