CN115303805A - Self-operated material dredging valve - Google Patents

Self-operated material dredging valve Download PDF

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Publication number
CN115303805A
CN115303805A CN202210934469.7A CN202210934469A CN115303805A CN 115303805 A CN115303805 A CN 115303805A CN 202210934469 A CN202210934469 A CN 202210934469A CN 115303805 A CN115303805 A CN 115303805A
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CN
China
Prior art keywords
valve
air
seat
valve core
self
Prior art date
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Pending
Application number
CN202210934469.7A
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Chinese (zh)
Inventor
贺雅成
冯缨
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Sichuan Kene Industry Equipment Manufacturing Co ltd
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Sichuan Kene Industry Equipment Manufacturing Co ltd
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Publication date
Application filed by Sichuan Kene Industry Equipment Manufacturing Co ltd filed Critical Sichuan Kene Industry Equipment Manufacturing Co ltd
Priority to CN202210934469.7A priority Critical patent/CN115303805A/en
Publication of CN115303805A publication Critical patent/CN115303805A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The invention provides a self-operated material dredging valve, which relates to the technical field of pneumatic transmission and comprises a valve body, a valve cover, a first valve core assembly, a first adjusting piece and a driving mechanism, wherein the valve cover is arranged on the valve body; the first valve core assembly comprises a first valve seat, a first valve core and a first spring; the first valve core is provided with a sealing part which can extend into the first valve seat; the first valve seat is provided with a connecting part matched with the sealing part; the driving mechanism comprises a diaphragm and a diaphragm seat; the diaphragm is arranged in an accommodating space formed by the valve body and the valve cover, and can divide the accommodating space into a guide chamber and an air chamber which are independent of each other; the membrane seat is arranged in the guide chamber and can be pushed by the membrane; the diaphragm seat is provided with an extension part which is inserted with the valve body and is indirectly connected with the first valve core through a first adjusting part; the length of the first adjustment member is adjustable. When the conveying pipeline is blocked, compressed gas can enter the conveying pipeline to sweep solid powder in the conveying pipeline, so that the dredging of the conveying pipeline is realized.

Description

Self-operated material dredging valve
Technical Field
The invention relates to the technical field of pneumatic conveying of materials, in particular to a self-operated material dredging valve.
Background
Pneumatic conveying realizes the conveying of granular materials through compressed gas, and is widely applied to an ash removal system of a thermal power plant in China.
The pneumatic conveying technology is also applied to a solid powder conveying system, but the solid powder has the characteristics of large particles, large friction among the particles and the like, so that the conveying of the solid powder needs a large driving force, the phenomenon that the conveying pipeline is blocked by the solid powder easily occurs, and the normal conveying of the solid powder is seriously influenced when the conveying pipeline is blocked.
Therefore, in order to ensure the normal transportation of the solid powder, various related dredging valves have been presented in the prior art, but it is still necessary to design a dredging valve with other structure to dredge the solid powder in the transportation pipeline when the transportation pipeline is blocked, so that the solid powder can flow normally along with the airflow.
Disclosure of Invention
Aiming at the situation, the invention provides a self-operated material dredging valve, aiming at solving the technical problem that the normal conveying of solid powder is influenced because the conventional conveying pipeline is easily blocked by the solid powder.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a self-operated material dredging valve, which mainly comprises:
the valve comprises a valve body, a valve cover, a first valve core assembly, a first adjusting piece and a driving mechanism for driving the first valve core assembly to act;
the first valve core assembly comprises a first valve seat, a first valve core and a first spring; the first valve core is provided with a conical sealing part, and the sealing part can extend into the first valve seat; the first valve seat is provided with a connecting part which is matched with the sealing part and is in a tapered shape;
the drive mechanism includes: a diaphragm and a diaphragm seat;
the diaphragm is arranged in an accommodating space formed by the valve body and the valve cover and can divide the accommodating space into a guide chamber and an air chamber which are independent from each other, wherein the air chamber can form a relative closed space, and the guide chamber is communicated with the external atmosphere;
the membrane seat is arranged in the guide chamber and can be pushed by the membrane; the diaphragm seat is provided with an extension part which is inserted into a hole in the valve body and is indirectly connected with the first valve core through a first adjusting piece;
the length of the first adjusting member is adjustable so that the distance between the diaphragm seat and the first valve core is adjustable within a preset range.
In some embodiments of the invention, the valve further comprises a check valve, the check valve is integrally installed in the air outlet of the valve body;
the one-way valve comprises a second valve seat, a second valve core, an adjusting nut and a second spring;
the second valve seat is arranged in the air outlet, and one end of the second valve seat is provided with a vent hole;
the second valve core is movably arranged in the second valve seat and can block the vent hole;
the adjusting nut is in threaded connection with the second valve seat;
one end of the second spring is connected with the adjusting nut, and the other end of the second spring is connected with the second valve spool.
In some embodiments of the invention, the second valve seat is plugged with the air outlet;
an outlet connector is also inserted into the air outlet, one end of the outlet connector is abutted against the second valve seat, a convex part is arranged in the middle of the outlet connector, and the outer diameter of the convex part is larger than the inner diameter of the air outlet;
the convex part is connected with the air outlet of the valve body through a bolt.
In some embodiments of the invention, the valve body is provided with an air inlet, an air distribution channel and an air outlet which can be communicated in sequence;
the first valve seat is arranged in the gas distribution channel and is provided with a connecting groove, a first air channel and a second air channel which can be communicated in sequence; the first valve core is movably arranged in the connecting groove, and an air guide gap is reserved between the side wall of the first valve core and the side wall of the connecting groove; the first spring is installed in the air distribution channel, and one end of the first spring is abutted against the first valve core, so that the first valve core can block an air path between the air distribution channel and the first air channel under the preset pressure.
In some embodiments of the invention, one end of the air distribution channel extends out of the valve body, a second adjusting piece is connected to the air distribution channel through threads, one end of the first spring is connected with the second adjusting piece, and the other end of the first spring is connected with the first valve core;
the second adjusting piece can block the air distribution channel, and the air inlet is positioned between the second adjusting piece and the first valve seat.
In some embodiments of the invention, the drive mechanism further comprises a shunt channel formed within the valve body;
one end of the flow distribution channel is communicated with the gas distribution channel, and the other end of the flow distribution channel is communicated with the gas chamber and the gas outlet.
In some embodiments of the invention, the first valve seat further has a third air passage thereon;
one end of the third air passage is communicated with the first air passage, and the other end of the third air passage is communicated with the middle part of the flow dividing channel.
In some embodiments of the invention, a regulator valve cartridge and a pressure gauge are connected to the bypass passage.
In some embodiments of the present invention, the first adjusting member includes a jacking member, one end of the jacking member is connected with the extending portion by screw thread, and the other end of the jacking member is movably abutted against the first valve core; or one end of the jacking piece is in threaded connection with the first valve core, and the other end of the jacking piece is movably abutted against the extending part.
In some embodiments of the invention, the valve cover is provided with an air supplement port.
The embodiment of the invention at least has the following advantages or beneficial effects:
1. the air inlet can be connected with a high-pressure air source, the air outlet can be connected with a conveying pipeline used for conveying solid powder, when the conveying pipeline is blocked, the first valve core can be moved upwards to enable the first valve core to open the first air passage, so that the connecting groove and the first air passage can be communicated, and thus, a large amount of compressed air from the high-pressure air source can be generated by the air inlet, the air distribution passage, the connecting groove, the first air passage, the path formed by the second air passage and the air outlet and finally enters the conveying pipeline, so that the solid powder in the conveying pipeline is swept, the dredging of the conveying pipeline is realized, and the normal conveying of the solid powder is ensured.
2. The invention adopts the diaphragm and the diaphragm seat to replace the traditional piston, the sealing requirement between the diaphragm seat and the air chamber is lower, and the manufacturing and maintenance cost of the equipment is effectively reduced.
3. According to the invention, the distance between the first valve core and the extension part of the driving mechanism is set to be adjustable, so that the requirement of the self-operated material dredging valve on the assembly precision can be reduced. In the process of assembling the self-operated dredging valve, an operator can adjust the distance between the first valve core and the extending part according to actual conditions, so that when the first valve core moves towards the first air channel and is in contact with the top of the first adjusting part, the first valve core can be just in close fit with the first air channel on the valve seat.
4. In the process of downward moving and resetting of the first valve core, the sealing part of the first valve core is in mutual conical fit with the connecting part of the first valve seat, and the centering of the sealing part of the first valve core can be automatically realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a self-operated material dredging valve;
fig. 2 is a schematic structural view of a partially enlarged view of a position a in fig. 1.
Icon:
11-valve body, 111-air inlet, 112-air distribution channel, 113-air outlet, 114-second regulating component,
121-a first valve seat, 122-a first valve core, 123-a first spring, 124-a connecting groove, 125-a first air passage, 126-a second air passage, 127-an air guide gap, 128-a third air passage, 129-a sealing part, 131-a connecting part, 132-a limiting column,
2-driving mechanism, 21-valve cover, 211-bayonet, 212-air supplement port, 22-diaphragm, 23-diaphragm seat, 231-extension part, 24-shunt channel, 25-guide chamber, 26-air chamber, 27-regulating valve core, 28-pressure gauge,
3-a first adjusting piece, 31-a jacking piece, 32-a limit nut,
4-one-way valve, 41-second valve seat, 411-vent hole, 42-second valve core, 43-adjusting nut, 44-second spring, 45-outlet connector and 451-convex part.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "width", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
Referring to fig. 1-2, the present embodiment provides a self-operated material dredging valve, which mainly includes a valve body 11, a first valve core assembly, a driving mechanism 2, a first adjusting member 3, and a check valve 4.
The valve body 11 has an air inlet 111, an air distribution passage 112, and an air outlet 113 that can communicate in this order.
The first valve core assembly mainly comprises a first valve seat 121, a first valve core 122 and a first spring 123; a first valve seat 121 is arranged in the air distribution passage 112, and the first valve seat 121 is provided with a connecting groove 124, a first air passage 125 and a second air passage 126 which can be communicated in sequence; the first valve element 122 is movably disposed in the connecting groove 124, and an air guide gap 127 is left between a side wall of the first valve element 122 and a side wall of the connecting groove 124 so as to communicate the air distribution passage 112, the connecting groove 124 and the first air passage 125. One end of the first spring 123 is installed in the air distribution passage 112, and the other end is connected to the first valve element 122, and the first spring 123 is used for enabling the first valve element 122 to block the first air passage 125 with a preset pre-pressure.
The driving mechanism 2 is configured to open the first air passage 125 by the first valve element 122, so that the air distribution passage 112, the connecting groove 124, the first air passage 125, the second air passage 126, and the air outlet 113 are sequentially communicated.
The first adjustment element 3 is used to connect the drive mechanism 2 to the first valve element 122 and is able to adjust the distance between the drive mechanism 2 and the first valve element 122.
The check valve 4 is integrally installed in the air outlet 113.
The gas inlet 111 can be connected with a high-pressure gas source, the gas outlet 113 can be connected with a conveying pipeline for conveying solid powder, when the conveying pipeline is blocked, the first valve core 122 can be moved upwards to enable the first valve core 122 to open the first gas passage 125 so as to communicate the connecting groove 124 with the first gas passage 125, and thus, a large amount of compressed gas from the high-pressure gas source can enter the conveying pipeline finally through a path formed by the gas inlet 111, the gas distribution passage 112, the connecting groove 124, the first gas passage 125, the second gas passage 126 and the gas outlet 113 to sweep the solid powder in the conveying pipeline, so that the dredging of the conveying pipeline is realized, and the normal conveying of the solid powder is ensured. When the conveying pipeline for conveying the solid powder is blocked, the pressure in the conveying pipeline can be gradually increased, and the solid powder in the conveying pipeline can be prevented from reversely flowing into the gas distribution channel 112 from the gas outlet 113 by installing the check valve 4 in the gas outlet 113.
The principal components and principles of operation of a self-operated dredge valve are generally described above and will be described in greater detail below.
In order to facilitate moving the first valve core 122 upwards, the driving mechanism 2 preferably drives the first valve core 122 in a self-operated manner, and specifically, the driving mechanism 2 mainly includes the valve cover 21, the diaphragm 22, the diaphragm seat 23, and the diversion channel 24. The valve cover 21 is connected to the valve body 11, and an accommodation space is formed between the valve cover 21 and the valve body 11. The diaphragm 22 is disposed in the accommodating space and can partition the accommodating space into the guide chamber 25 and the air chamber 26 which are independent of each other, wherein the air chamber 26 can form a closed space, and the area of the lower side of the diaphragm 22 is larger than the area of the upper side of the first valve element 122. The diaphragm seat 23 is arranged in the guide chamber 25 and can be pushed by the diaphragm 22; the diaphragm seat 23 has an extension 231, the extension 231 engaging in a bore in the valve body 11 and being indirectly connected to the first valve element 122 via the first adjusting part 3. The flow dividing passage 24 has one end communicating with the air distribution passage 112 and the other end communicating with the air chamber 26. After the compressed gas enters the gas distribution channel 112 from the gas inlet 111, the compressed gas enters the gas chamber 26 through the diversion channel 24, at this time, the contact area of the diaphragm 22 and the compressed gas is larger than that of the first valve core 122 and the compressed gas, so that the diaphragm 22 drives the first valve core 122 to move in the direction away from the first gas channel 125, and the gas inlet 111, the gas distribution channel 112, the connection groove 124, the first gas channel 125, the second gas channel 126 and the gas outlet 113 are sequentially communicated.
When the conveying pipeline is blocked, compressed gas from a high-pressure gas source can enter the gas distribution channel 112 from the gas inlet 111 and then enter the gas chamber 26 through the flow dividing channel 24, at the moment, the contact area between the diaphragm 22 and the compressed gas is larger than that between the first valve core 122 and the compressed gas, so that the diaphragm 22 drives the diaphragm seat 23 to move upwards, the diaphragm seat 23 can drive the first valve core 122 to move upwards, and therefore the gas inlet 111, the gas distribution channel 112, the connecting groove 124, the first gas channel 125, the second gas channel 126 and the gas outlet 113 are sequentially communicated, therefore, a large amount of compressed gas can enter the conveying pipeline to sweep solid powder in the conveying pipeline, dredging of the conveying pipeline is realized, and normal conveying of the solid powder is guaranteed.
A regulator spool 27 and a pressure gauge 28 may be connected to the branch passage 24 to regulate the flow rate in the branch passage 24 and to detect the pressure in the branch passage 24.
In order to make the diaphragm 22 move upward with the first valve core 122, the diameter of the diaphragm 22 is larger than the diameter of the accommodating space (the size in the left-right direction shown in fig. 1), and the diaphragm 22 may also have elasticity. Specifically, when the width of the diaphragm 22 is greater than the width of the accommodating space, the diaphragm 22 can push the first valve element 122 upward under the action of air pressure; when the diaphragm 22 has elasticity, the diaphragm 22 can be deformed under the action of air pressure to push the first valve core 122 upwards; the diaphragm 22 may also satisfy the above two conditions at the same time, that is, the diaphragm 22 may have elasticity while having a width larger than that of the accommodating space, which enables the diaphragm 22 to push the first valve element 122 upward under the action of the air pressure.
In this embodiment, the diameter of the diaphragm 22 is preferably 3-4 times the diameter of the first spool 122 to ensure that the diaphragm 22 can push the first spool 122 upward. In order to facilitate the fixing of the diaphragm 22, a bayonet 211 is preferably provided on the valve cover 21, the bayonet 211 cooperating with the valve body 11 to clamp the edge of the fixed diaphragm 22. The valve cover 21 is connected with the valve body 11 through bolts, so that the valve cover 21 can be conveniently assembled and disassembled.
The lateral wall of the guide chamber 25 can be further provided with a breathing hole (not shown in the figure), and the breathing hole is used for communicating the external environment with the guide chamber 25, so that even under the condition that the size of the diaphragm seat 23 is basically consistent with that of the guide chamber 25, when the diaphragm seat 23 moves up and down in the guide chamber 25, the resistance received is smaller, and therefore the first valve core assembly is convenient to open and close, namely the first valve core 122 is convenient to move up and down.
The lower side of the valve cover 21 can be provided with an air supplement port 212, the air supplement port 212 can be connected with other air sources, and the compressed air entering the air chamber 26 from the air supplement port 212 can also move the diaphragm seat 23 upwards.
The first valve seat 121 may further have a third air passage 128, and one end of the third air passage 128 communicates with the first air passage 125 and the other end communicates with the middle of the branch passage 24. When the conveying pipeline connected with the gas outlet 113 has less solid powder, the compressed gas in the gas distribution channel 112 can directly enter the conveying pipeline through a path formed by the flow dividing channel 24, the third gas channel 128, the first gas channel 125, the second gas channel 126 and the gas outlet 113 so as to supplement a small amount of gas to the conveying pipeline, so that a gas source is saved; when the conveying pipeline is blocked due to more solid powder, the pressure in the conveying pipeline is gradually increased, so that the pressure in the air inlet 111 is also increased, the compressed air in the diversion channel 24 enters the air chamber 26, the diaphragm seat 23 and the first valve core 122 are upwards pushed through the diaphragm 22 to communicate the connecting groove 124 with the first air passage 125, and at the moment, a large amount of compressed air in the air distribution channel 112 can enter the conveying pipeline through a path formed by the air distribution channel 112, the connecting groove 124, the first air passage 125, the second air passage 126 and the air outlet 113, so that a large amount of compressed air can be supplemented into the conveying pipeline, the solid powder in the conveying pipeline is swept, and the dredging of the conveying pipeline is realized.
It should be noted that the driving mechanism 2 may drive the first valve element 122 actively, for example, by a power source such as an air cylinder, or may be driven passively, or may be self-operated, and when the driving mechanism 2 drives the first valve element 122 in the self-operated manner as described above, it is advantageous to reduce energy consumption and cost.
One end of the air distribution channel 112 extends out of the valve body 11, a second adjusting piece 114 is connected to the air distribution channel 112 through internal threads, one end of a first spring 123 is connected with the second adjusting piece 114, the other end of the first spring is connected with a first valve core 122, the second adjusting piece 114 can seal the air distribution channel 112, and the air inlet 111 is located between the second adjusting piece 114 and the first valve seat 121. By rotating the second adjustment member 114, the preset force of the first spring 123 on the first valve element 122 can be adjusted.
The first adjusting member 3 mainly includes a jacking member 31, one end of the jacking member 31 is mounted on the driving mechanism 2, and the other end of the jacking member 31 abuts against the first valve core 122. When the driving mechanism 2 moves upwards, the jacking piece 31 can push the first valve core 122 upwards, and when the driving mechanism 2 moves downwards, the first valve core 122 can move downwards to reset under the action of the first spring 123 so as to block the first air passage 125 again. Specifically, the lifting member 31 is screwed to the driving mechanism 2, and in this embodiment, the lower end of the lifting member 31 is screwed to the upper end of the extending portion 231. The jacking piece 31 is in threaded connection with a limit nut 32, and more specifically, the jacking piece 31 is a bolt. The spacing between the jacking piece 31 and the driving mechanism 2 can be conveniently adjusted by arranging the limiting nut 32. The distance between the jacking piece 31 and the driving mechanism 2 is set to be adjustable, so that the requirement of the self-operated material dredging valve on the assembly precision can be reduced. During the process of assembling the self-operated material dredging valve, an operator can adjust the distance between the sealing portion 129 of the first valve element 122 and the extending portion 231 of the driving mechanism 2 according to actual conditions, so that when the top of the jacking piece 31 contacts with the sealing portion 129 of the first valve element 122 during the process of moving the first valve element 122 to the first air passage 125, the sealing portion 129 of the first valve element 122 can be just matched with the first air passage 125 on the valve seat 121.
The first adjusting member 3 is used for enabling the driving mechanism 2 to drive the first valve core 122 to move upwards, and for enabling the length of the first adjusting member 3 to be adjustable, so that the distance between the extending portion 231 and the first valve core 122 is adjustable within a preset range; the first adjusting member 3 is only one preferred embodiment, and the first adjusting member 3 may have other structures as long as the above-mentioned purpose can be achieved, and the embodiments are not illustrated.
The first valve element 122 can move downwards to be reset under the action of the first spring 123 so as to block the first air passage 125 again. The first valve element 122 has a sealing portion 129 in a circular truncated cone shape or a conical shape, the sealing portion 129 can extend into the first air passage 125 to close the first air passage 125, the first air passage 125 has a connecting portion 131 matched with the sealing portion 129, and the connecting portion 131 is in a tapered shape. As shown in fig. 1 and 2, the diameter of the sealing portion 129 is gradually reduced from top to bottom, and the diameter of the connecting portion 131 is also gradually reduced from top to bottom, so that the sealing portion 129 can extend into the first air passage 125 during downward movement and return of the first valve element 122, and the centering of the sealing portion 129 is automatically achieved, so that even if a slight misalignment occurs between the sealing portion 129 and the first air passage 125 after the first valve element 122 is moved upward, the sealing portion 129 can finally be tightly fitted with the first air passage 125 to close the first air passage 125 as the first valve element 122 is moved downward and return. In addition, a large contact area can be provided between the connecting portion 131 and the sealing portion 129, which is advantageous for ensuring a tight fit between the sealing portion 129 and the first air passage 125.
The top of the first valve core 122 is provided with a limiting post 132, and the lower end of the first spring 123 is sleeved on the limiting post 132, so that the first valve core 122 is prevented from shaking excessively in the up-and-down moving process.
In the present embodiment, it is preferable that the check valve 4 mainly includes a second valve seat 41, a second spool 42, an adjustment nut 43, and a second spring 44. The second valve seat 41 is installed in the air outlet 113, the right end of the second valve seat 41 is provided with a vent hole 411, the second valve core 42 is movably arranged in the second valve seat 41 and can seal the vent hole 411, the adjusting nut 43 is in threaded connection in the second valve seat 41, one end of the second spring 44 is connected with the adjusting nut 43, and the other end of the second spring is connected with the second valve core 42. The force between the second spool 42 and the vent hole 411 can be adjusted by turning the adjusting nut 43.
In the present embodiment, check valve 4 is installed in air outlet 113 in the following manner: the second valve seat 41 is inserted into the air outlet 113, the air outlet 113 is also inserted with an outlet connector 45, the right end of the outlet connector 45 is abutted against the left end of the second valve seat 41, a convex part 451 is arranged in the middle of the outlet connector 45, the outer diameter of the convex part 451 is larger than the inner diameter of the air outlet 113, and the convex part 451 is connected with the end part of the air outlet 113 through a bolt. Through the setting of outlet joint 45, can restrict the removal of check valve 4 in gas outlet 113, after dismantling outlet joint 45, alright in order to change check valve 4 entirely.
It should be noted that the installation manner of the check valve 4 is only a preferred embodiment, and in other implementation scenarios, the check valve 4 may be installed in the air outlet 113 in other manners.
According to the embodiment disclosed by the invention, the self-operated material dredging valve does not need an external sensor or other control elements. When the pipe blockage occurs, the local pressure of the dredging pipe is increased, when the pressure is increased to a set value, the main valve core (the first valve core) is automatically opened to purge, and when the pressure is reduced to be below the set value, the valve is automatically closed, so that the compressed air can be effectively saved. That is to say, the valve can dredge and blow when the conveying pipe is blocked, the pipe is not blocked, and the energy consumption is effectively reduced.
Finally, it should be noted that: while the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A self-operated material dredging valve is characterized by comprising:
the valve comprises a valve body, a valve cover, a first valve core assembly, a first adjusting piece and a driving mechanism for driving the first valve core assembly to act;
the first valve core assembly comprises a first valve seat, a first valve core and a first spring; the first valve core is provided with a conical sealing part which can extend into the first valve seat; the first valve seat is provided with a connecting part which is matched with the sealing part and is in a tapered shape;
the drive mechanism includes: a diaphragm and a diaphragm seat;
the diaphragm is arranged in an accommodating space formed by the valve body and the valve cover and can divide the accommodating space into a guide chamber and an air chamber which are independent from each other, wherein the air chamber can form a relative closed space, and the guide chamber is communicated with the outside atmosphere;
the membrane seat is arranged in the guide chamber and can be pushed by the membrane; the diaphragm seat is provided with an extension part which is inserted into a hole in the valve body and is indirectly connected with the first valve core through the first adjusting part;
the length of the first adjusting piece is adjustable, so that the distance between the diaphragm seat and the first valve core is adjustable within a preset range.
2. The self-operated material dredging valve according to claim 1, further comprising a one-way valve installed in the air outlet of the valve body as a whole;
the one-way valve comprises a second valve seat, a second valve core, an adjusting nut and a second spring;
the second valve seat is arranged in the air outlet, and one end of the second valve seat is provided with a vent hole;
the second valve core is movably arranged in the second valve seat and can block the vent hole;
the adjusting nut is in threaded connection with the second valve seat;
one end of the second spring is connected with the adjusting nut, and the other end of the second spring is connected with the second valve spool.
3. The self-operated material dredging valve according to claim 2,
the second valve seat is inserted with the air outlet;
an outlet joint is further inserted at the air outlet, one end of the outlet joint is abutted against the second valve seat, a convex part is arranged in the middle of the outlet joint, and the outer diameter of the convex part is larger than the inner diameter of the air outlet;
the convex part is connected with the air outlet of the valve body through a bolt.
4. The self-operated material dredging valve according to claim 1, wherein:
the valve body is provided with an air inlet, an air distribution channel and an air outlet which can be communicated in sequence;
the first valve seat is arranged in the gas distribution channel and is provided with a connecting groove, a first air channel and a second air channel which can be communicated in sequence; the first valve core is movably arranged in the connecting groove, and an air guide gap is reserved between the side wall of the first valve core and the side wall of the connecting groove; the first spring is installed in the air distribution channel, and one end of the first spring is abutted to the first valve core, so that the first valve core can block an air path between the air distribution channel and the first air channel under preset pressure.
5. The self-operated material dredging valve according to claim 4,
one end of the gas distribution channel extends out of the valve body, a second adjusting piece is connected with the gas distribution channel through an internal thread, one end of the first spring is connected with the second adjusting piece, and the other end of the first spring is connected with the first valve core;
the second adjusting piece can block the air distribution channel, and the air inlet is positioned between the second adjusting piece and the first valve seat.
6. The self-operated material dredging valve according to claim 4, wherein:
the drive mechanism further includes a bypass channel formed in the valve body;
one end of the flow distribution channel is communicated with the gas distribution channel, and the other end of the flow distribution channel is communicated with the gas chamber and the gas outlet.
7. The self-operated material dredging valve according to claim 6,
the first valve seat is also provided with a third air passage;
one end of the third air passage is communicated with the first air passage, and the other end of the third air passage is communicated with the middle of the flow dividing channel.
8. The self-operated material dredging valve according to claim 6, wherein the flow dividing channel is connected with a regulating valve core and a pressure gauge.
9. The self-operated dredge valve of any one of claims 1-8 wherein:
the first adjusting piece comprises a jacking piece, one end of the jacking piece is in threaded connection with the extending part, and the other end of the jacking piece is movably abutted against the first valve core; or one end of the jacking piece is in threaded connection with the first valve core, and the other end of the jacking piece is movably abutted against the extending part.
10. The self-operated dredge valve of any one of claims 1-8 wherein the valve cover is provided with an air supplement port.
CN202210934469.7A 2022-08-04 2022-08-04 Self-operated material dredging valve Pending CN115303805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210934469.7A CN115303805A (en) 2022-08-04 2022-08-04 Self-operated material dredging valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210934469.7A CN115303805A (en) 2022-08-04 2022-08-04 Self-operated material dredging valve

Publications (1)

Publication Number Publication Date
CN115303805A true CN115303805A (en) 2022-11-08

Family

ID=83858504

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210934469.7A Pending CN115303805A (en) 2022-08-04 2022-08-04 Self-operated material dredging valve

Country Status (1)

Country Link
CN (1) CN115303805A (en)

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