CN217755856U

CN217755856U - Material dredging valve

Info

Publication number: CN217755856U
Application number: CN202222046164.0U
Authority: CN
Inventors: 贺雅成; 冯缨; 王泽方; 田伟
Original assignee: Sichuan Kene Industry Equipment Manufacturing Co ltd
Current assignee: Sichuan Kene Industry Equipment Manufacturing Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-11-08
Anticipated expiration: 2032-08-04

Abstract

The utility model provides a dredging valve, which relates to the technical field of pneumatic conveying of materials and comprises a valve body, an air inlet, an air distribution channel and an air outlet, wherein the air inlet, the air distribution channel and the air outlet can be communicated in sequence; the valve core assembly comprises a valve seat, a valve core and a spring; the 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; the valve core is movably arranged in the connecting groove, and an air guide gap is reserved between the side wall of the valve core and the side wall of the connecting groove; the spring is arranged in the gas distribution channel, and one end of the spring is abutted with the valve core; the driving mechanism is used for enabling the valve core to open the air path between the first air passage and the air distribution passage so as to enable the air distribution passage, the connecting groove, the first air passage, the second air passage and the air outlet to be communicated; the first adjusting member can adjust a distance between the driving mechanism and the valve core. The distance between the valve core and the driving mechanism is set to be adjustable, so that the requirement of the dredging valve on the assembly precision can be reduced.

Description

Material dredging valve

Technical Field

The utility model belongs to the technical field of the pneumatic transmission technique of material and specifically relates to a dredge material valve is related to.

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 frictional force 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 is very easy to occur, and the normal conveying of the solid powder is seriously influenced when the conveying pipeline is blocked.

In the prior art, a blowing-assisting valve is adopted to deal with the situations, the blowing-assisting valve comprises a valve seat, a valve core assembly and a piston used for opening and closing the valve core assembly, compressed gas is supplemented into a conveying pipeline by the blowing-assisting valve, and solid powder in the conveying pipeline is swept by the compressed gas so as to dredge the conveying pipeline.

When the piston and the valve core assembly of the blow-assisted valve are assembled, the piston is required to be in direct or spaced contact with the valve core assembly, so that the piston can smoothly drive the valve core assembly.

SUMMERY OF THE UTILITY MODEL

In order to the above situation, the utility model provides a dredge material valve aims at solving current pipeline and is blockked up by solid powder easily, and influences the technical problem of the normal transport of solid powder.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a dredge valve, it mainly can include:

the valve comprises a valve body, a valve core assembly, a first adjusting piece and a driving mechanism for driving the valve core assembly to act, 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 valve core assembly comprises a valve seat, a valve core and a spring; the 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; the valve core is movably arranged in the connecting groove, and an air guide gap is reserved between the side wall of the valve core and the side wall of the connecting groove; the spring is arranged in the gas distribution channel, and one end of the spring is abutted with the valve core, so that the valve core can block a gas path between the gas distribution channel and the first gas channel under preset pressure;

the driving mechanism is used for enabling the valve core to open the air path between the first air passage and the air distribution passage so as to enable the air distribution passage, the connecting groove, the first air passage, the second air passage and the air outlet to be communicated;

one end of the first adjusting piece is connected to the driving mechanism, and the other end of the first adjusting piece is movably abutted to the valve core;

the first adjusting piece can adjust the distance between the driving mechanism and the valve core.

In some embodiments of the present invention, the valve element has a sealing portion in a shape of a circular truncated cone or a cone, and the sealing portion can extend into the first air passage;

the valve seat is provided with a connecting part matched with the sealing part, and the connecting part is in a tapered shape.

In some embodiments of the present invention, the top of the valve core is provided with a positioning boss, and the lower end of the spring is sleeved on the positioning boss.

The utility model discloses an in some embodiments, first regulating part includes the jacking piece, and the one end of jacking piece is connected on actuating mechanism, and other end activity butt is on the case, and perhaps, jacking piece one end is connected on the case, and other end activity butt is on actuating mechanism.

In some embodiments of the present invention, the jacking member is connected to the driving mechanism by a screw, or the jacking member is connected to the valve element by a screw.

The utility model discloses an in some embodiments, threaded connection has stop nut on the jacking piece.

In some embodiments of the present invention, the jacking member is a bolt.

In some embodiments of the utility model, the one end of distribution passageway extends to outside the valve body, and threaded connection has the second regulating part in this department of distribution passageway, and the one end and the second regulating part of spring are connected, the other end is connected with the case.

In some embodiments of the present invention, the valve seat further has a third air passage;

the valve body is also provided with a first diversion channel, and the air distribution channel, the first diversion channel, the third air passage and the first air passage are communicated in sequence.

In some embodiments of the present invention, the first diversion channel is connected to a regulating valve element.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

1. the air inlet can be connected high pressurized air source, the pipeline that is used for carrying the solid powder is connectable to the gas outlet, when pipeline takes place to block up, the case that can shift up makes the case keep away from first air flue, with intercommunication spread groove and first air flue, like this, a large amount of compressed gas that comes from high pressurized air source alright by the air inlet, the distribution passageway, the spread groove, first air flue, the route that second air flue and gas outlet formed, finally get into pipeline, in order to sweep the solid powder in the pipeline, realize pipeline's mediation, thereby guarantee the normal transport of solid powder.

2. The distance between the valve core and the driving mechanism is set to be adjustable, so that the requirement of the dredging valve on the assembly precision can be reduced. In the process of assembling the dredging valve, an operator can adjust the distance between the valve core and the driving mechanism according to actual conditions, so that when the valve core is contacted with the driving mechanism in the process of moving the valve core to the first air channel, the valve core can be just tightly matched with the first air channel on the valve seat.

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 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 view of a material dredging valve;

fig. 2 is 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-valve seat, 122-valve core, 123-spring, 124-connecting groove, 125-first air passage, 126-second air passage, 127-air guide gap, 128-third air passage, 129-sealing part, 131-connecting part, 132-positioning boss,

2-driving mechanism, 21-valve cover, 212-air supplementing opening, 22-membrane, 23-membrane seat, 231-extending part, 241-first diversion channel, 242-second diversion channel, 25-guide chamber, 26-air chamber, 27-regulating valve core, 28-pressure gauge,

3-first adjusting piece, 31-jacking piece and 32-limiting nut.

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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of 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, and may be, for example, fixedly connected, detachably connected, or integrated; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled 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 material dredging valve, which mainly includes a valve body 11, a valve core assembly, a driving mechanism 2 and a first adjusting member 3;

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 cartridge assembly basically includes a valve seat 121, a cartridge 122 and a spring 123. A valve seat 121 is provided in the air distribution passage 112, and the valve seat 121 has a connecting groove 124, a first air passage 125, and a second air passage 126 that can communicate in this order. The valve core 122 is movably disposed in the connecting groove 124, and an air guide gap 127 is left between a side wall of the valve core 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 spring 123 is installed in the air distribution channel 112, and the other end is connected to the valve core 122, and the spring 123 is used for moving down and resetting the valve core 122, so that the valve core 122 can block the first air passage 125 under a preset pressure, thereby blocking the air passage between the first air passage 125 and the air distribution channel 112.

The driving mechanism 2 is used for moving the valve element 122 away from the first air passage 125, so that the valve element 122 opens an air passage between the first air passage 125 and 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 adjuster 3 is used to connect the drive mechanism 2 and the spool 122, and is capable of adjusting the distance between the drive mechanism 2 and the spool 122. One end of the first adjusting member 3 is connected to the driving mechanism 2, and the other end thereof is movably abutted against the valve core 122, or one end of the first adjusting member 3 is connected to the valve core 122, and the other end thereof is movably abutted against the driving mechanism 2. By arranging the distance between the valve core 122 and the driving mechanism 2 in an adjustable manner, the requirement of the dredging valve on the assembly precision can be reduced. During the process of assembling the dredging valve, an operator can adjust the distance between the valve core 122 and the driving mechanism 2 according to actual conditions, so that when the valve core 122 contacts the driving mechanism 2 during the process of moving the valve core 122 to the first air channel 125, the valve core 122 can be just tightly matched with the first air channel 125 on the valve seat 121.

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 valve core 122 can be moved upwards to enable the valve core 122 to be away from the first gas channel 125 so as to be communicated with the connecting groove 124 and the first gas channel 125, and therefore a large amount of compressed gas from the high-pressure gas source can finally enter the conveying pipeline through a path formed by 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 to sweep the solid powder in the conveying pipeline, dredging of the conveying pipeline is achieved, and normal conveying of the solid powder is guaranteed.

The valve body 122 has a sealing portion 129 having a truncated cone shape or a tapered shape, and the sealing portion 129 can extend into the first gas passage 125 to close the first gas passage 125. The valve core 122 can move downwards to reset under the action of the spring 123 so as to block the first air passage 125 again. The sealing portion 129 is in a truncated cone shape or a cone shape, the diameter of the sealing portion 129 is gradually changed, the sealing portion 129 of the valve core 122 can extend into the first air passage 125 in the process of moving the valve core 122 downwards to reset, and the centering of the sealing portion 129 is automatically realized, so that even if the sealing portion 129 and the first air passage 125 are slightly dislocated after the valve core 122 moves upwards, the sealing portion 129 can be finally tightly matched with the first air passage 125 along with the moving downwards to reset of the valve core 122, and the first air passage 125 is blocked.

The foregoing generally describes the principal components and principles of operation of the dredge valve, which is described in greater detail below.

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 valve core 122. When the driving mechanism 2 moves upwards, the jacking piece 31 can push the valve core 122 upwards, and when the driving mechanism 2 moves downwards, the valve core 122 can move downwards to reset under the action of the spring 123 so as to block the first air passage 125 again. Specifically, the jacking piece 31 is in threaded connection with the driving mechanism 2, a limit nut 32 is in threaded connection with the jacking piece 31, and more specifically, the jacking piece 31 is a bolt. Through the setting of stop nut 32, be convenient for adjust the interval between jacking piece 31 and actuating mechanism 2. By arranging the distance between the jacking piece 31 and the driving mechanism 2 in an adjustable mode, the requirement of the dredging valve on the assembling precision can be reduced. During the process of assembling the dredging valve, an operator can adjust the distance between the sealing portion 129 of the valve core 122 and the driving mechanism 2 according to actual conditions, so that when the sealing portion 129 of the valve core 122 is in contact with the driving mechanism 2 in the process of moving the valve core 122 to the first air channel 125, the sealing portion 129 of the valve core 122 can be just in close fit with the first air channel 125 on the valve seat 121.

It should be noted that the first adjusting member 3 is used to enable the driving mechanism 2 to drive the valve core 122 to move upwards, and to adjust the distance between the driving mechanism 2 and the valve core 122, the first adjusting member 3 is only a preferred embodiment, and the first adjusting member 3 may also adopt other structures, as long as the above purpose can be achieved, which is not listed in this embodiment.

The first air channel 125 has a connection portion 131 matched with the sealing portion 129, the connection portion 131 is tapered, 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 connection portion 131 is also gradually reduced from top to bottom, so that the sealing portion 129 can be centered better in the downward movement and resetting process of the valve element 122. 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 valve core 122 is provided with a positioning boss 132, and the lower end of the spring 123 is sleeved on the positioning boss 132, so that the valve core 122 is prevented from shaking excessively in the up-and-down moving process.

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 an internal thread, one end of a spring 123 is connected with the second adjusting piece 114, the other end of the spring is connected with a valve core 122, the second adjusting piece 114 can block the air distribution channel 112, and the air inlet 111 is located between the second adjusting piece 114 and the valve seat 121. By rotating the second adjustment member 114, the predetermined force of the spring 123 against the spool 122 is adjusted.

The valve seat 121 further has a third air passage 128, and the valve body 11 further has a first diversion passage 241, and the air distribution passage 112, the first diversion passage 241, the third air passage 128 and the first air passage 125 are sequentially communicated. When the solid powder in the conveying pipeline connected with the gas outlet 113 is less, the valve core 122 is not required to move upwards, and the compressed gas in the gas distribution channel 112 can directly enter the conveying pipeline through a path formed by the first diversion channel 241, 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 the gas source is saved; when the conveying pipeline is blocked due to more solid powder, the valve core 122 can be moved upwards to communicate the connecting groove 124 and the first air passage 125, so that a large amount of compressed gas in the gas distribution passage 112 enters the conveying pipeline through a path formed by the gas distribution passage 112, the connecting groove 124, the first air passage 125, the second air passage 126 and the gas outlet 113, and a large amount of compressed gas is supplemented into the conveying pipeline, so that the solid powder in the conveying pipeline is purged, and the dredging of the conveying pipeline is realized.

In order to facilitate the upward movement of the valve core 122, the driving mechanism 2 preferably drives the valve core 122 in a self-operated manner, and specifically, the driving mechanism 2 mainly includes a valve cover 21, a diaphragm 22, a diaphragm seat 23, and a second diversion channel 242. 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 divide 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 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 lower end of the lift-up member 31 is screwed to the upper end of the extension 231, and the extension 231 is inserted into the hole of the valve body 11 and connected to the valve core 122. One end of the second diversion channel 242 communicates with the middle of the first diversion channel 241 and the other end communicates with the air chamber 26.

When the solid powder in the conveying pipeline connected with the gas outlet 113 is less, the compressed gas in the gas distribution channel 112 can directly enter the conveying pipeline through a path formed by the first diversion channel 241, 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 for 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 first diversion channel 241 enters the air chamber 26 from the second diversion channel 242, the diaphragm seat 23 and the valve core 122 are pushed upwards through the diaphragm 22 to communicate the connecting groove 124 with the first air channel 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 channel 125, the second air channel 126 and the air outlet 113, so that a large amount of compressed air is supplemented into the conveying pipeline, the solid powder in the conveying pipeline is swept, and the dredging of the conveying pipeline is realized.

In order to enable the diaphragm 22 to move the valve element 122 upward, the diameter of the diaphragm 22 may be 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 diameter of the diaphragm 22 is larger than that of the accommodating space, the diaphragm 22 can push the 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 valve core 122 upward; the diaphragm 22 can also satisfy the above two conditions at the same time, that is, the diaphragm 22 can have elasticity while its width is larger than that of the accommodating space, which enables the diaphragm 22 to push the valve element 122 upward under the action of the air pressure.

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 of the diaphragm seat 23 is smaller, and therefore the valve core assembly is convenient to open and close, namely the valve core 122 is convenient to move up and down.

The lower side of the valve cover 21 can be further 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.

It should be noted that the driving mechanism 2 may be active, for example, may be driven by a power source such as an air cylinder, or may be passive, or may be self-operated, and when the driving mechanism 2 drives the valve element 122 in the self-operated manner, it is advantageous to reduce energy consumption and cost.

The first branch flow passage 241 is connected with a regulator spool 27 so as to regulate the flow rate in the first branch flow passage 241; the second diversion channel 242 is connected to a pressure gauge 28 for detecting the pressure in the second diversion channel 242.

Finally, it should be noted that: the present invention is not limited to the above embodiments, and various modifications and changes can be made to the present invention by those skilled in the art, and the embodiments and features of the embodiments can be combined with each other at will without conflict. 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

1. A material evacuation valve, comprising:

the valve core assembly comprises a valve seat, a valve core and a spring; the 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; the valve core is movably arranged in the connecting groove, and an air guide gap is reserved between the side wall of the valve core and the side wall of the connecting groove; the spring is arranged in the air distribution channel, and one end of the spring is abutted to the valve core, so that the valve core can block an air passage between the air distribution channel and the first air passage under preset pressure;

the driving mechanism is used for enabling the valve core to open an air path between the first air channel and an air distribution channel so as to enable the air distribution channel, the connecting groove, the first air channel, the second air channel and the air outlet to be communicated;

one end of the first adjusting piece is connected to the driving mechanism, and the other end of the first adjusting piece is movably abutted against the valve core, or one end of the first adjusting piece is connected to the valve core, and the other end of the first adjusting piece is movably abutted against the driving mechanism;

2. The dredge valve of claim 1, wherein:

the valve core is provided with a sealing part in a circular truncated cone shape or a conical shape, and the sealing part can extend into the first air passage of the valve seat;

3. The dredge valve of claim 1, wherein the top of the spool is provided with a positioning boss, and the lower end of the spring is sleeved on the positioning boss.

4. The dredge valve of claim 1, wherein the first adjusting member comprises a jacking member, one end of the jacking member is connected to the driving mechanism, and the other end of the jacking member is movably abutted against the valve core, or one end of the jacking member is connected to the valve core, and the other end of the jacking member is movably abutted against the driving mechanism.

5. The dredge valve of claim 4, wherein the lift member is threadably connected to the drive mechanism or the lift member is threadably connected to the spool.

6. The material dredging valve of claim 5, wherein the jacking member is in threaded connection with a limit nut.

7. The dredge valve of claim 5, wherein the jacking members are bolts.

8. The dredge valve of any of claims 1-7,

one end of the air distribution channel extends out of the valve body, a second adjusting piece is connected to the end of the air distribution channel in a threaded mode, one end of the spring is connected with the second adjusting piece, and the other end of the spring is connected with the valve core.

9. The dredge valve of claim 8,

the valve seat is also provided with a third air passage;

the valve body is also provided with a first diversion channel, and the air distribution channel, the first diversion channel, the third air passage and the first air passage can be communicated in sequence.

10. The dredge valve of claim 9, where a regulator spool is connected to the first diversion passage.