CN220060537U

CN220060537U - Air proportion control valve

Info

Publication number: CN220060537U
Application number: CN202321571069.0U
Authority: CN
Inventors: 许军
Original assignee: Jiangsu Water Energy Metal Technology Co ltd
Current assignee: Jiangsu Water Energy Metal Technology Co ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-11-21
Anticipated expiration: 2033-06-20

Abstract

The utility model discloses an air proportional control valve, which comprises a valve body, a valve rod and a water outlet joint, wherein the lower end of the valve body is provided with a water inlet connected with an external high-pressure water conveying pipeline, a sliding hole and a first cavity which are communicated with each other are arranged in the valve body, the diameter of the first cavity is larger than that of the sliding hole, the upper end of the valve rod is in sealed sliding connection with the sliding hole, the lower end of the valve rod is positioned in the first cavity and is matched with the water inlet, one end of the water outlet joint is provided with a water outlet, the other end of the water outlet joint is communicated with the first cavity, the upper end of the valve body is provided with a cylinder body, the top end of the cylinder body is provided with an air inlet connected with an external high-pressure air source, the cylinder body is internally provided with a pressure bearing plate which divides the interior of the cylinder body into an upper cavity and a lower cavity, the pressure bearing plate is in sealed sliding connection with the inner wall of the cylinder body, the upper end of the valve rod extends into the lower cavity and is connected with the pressure bearing plate, and a spring is arranged between the pressure bearing plate and the bottom wall of the cylinder body. The utility model can effectively avoid the trouble of frequently starting or closing the high-pressure water supply equipment, and can ensure the safety of the pressure system and the constant water pressure.

Description

Air proportion control valve

Technical Field

The utility model belongs to the technical field of high-pressure cleaning supporting facilities, and particularly relates to an air proportional control valve.

Background

In the industrial production process, the surface of a workpiece, mechanical equipment or other objects is usually required to be cleaned by using high-pressure water, a specific high-pressure cleaning device generally comprises a high-pressure nozzle, a conveying pipeline, a water tank and a high-pressure water pump, the high-pressure water pump pumps clean water in the water tank and pressurizes the clean water, the clean water is conveyed to the nozzle through the conveying pipeline, and the surface of the objects is cleaned by using high-pressure water flow sprayed out of the nozzle. However, the high-pressure water conveying device has certain potential safety hazards in the use process: (1) The actual cleaning process is usually intermittent rather than continuous, so that the high-pressure water pump needs to be started or shut down frequently, which is troublesome to operate and reduces the service life of the high-pressure water pump; (2) If accidents such as high-pressure nozzle blockage occur, the water pressure in the conveying pipeline can be increased, safety accidents are easy to occur, and the constant water pressure of the pressure system cannot be ensured. Therefore, the utility model provides the air proportional control valve, which solves the problems, is arranged on the high-pressure water conveying pipeline, can effectively avoid the trouble of frequently starting or closing the high-pressure water supply equipment, and can ensure the safety and the constant water pressure of a pressure system.

Disclosure of Invention

Aiming at the defects in the background technology, the utility model provides the air proportional control valve, which can not only effectively avoid the trouble of frequently starting or closing high-pressure water supply equipment, but also ensure the safety of a pressure system and constant water pressure.

In order to achieve the above purpose, the technical solution of the present utility model is as follows:

an air ratio control valve, characterized in that: including valve body, valve rod and play water joint, the valve body lower extreme is equipped with the water inlet of being connected with outside high-pressure water delivery pipeline, be equipped with slide hole and first cavity of intercommunication in the valve body, the diameter of first cavity is greater than the diameter of slide hole, valve rod upper end and slide hole sealing sliding connection, the lower extreme is located first cavity and mutually support with the water inlet, when valve rod and water inlet subsides, first cavity and the outside intercommunication of water inlet, when valve rod and water inlet separation, first cavity cuts off with the water inlet outside, the one end of play water joint is equipped with the delivery port, the other end and first cavity intercommunication, the valve body upper end is equipped with the cylinder body, the cylinder body top is equipped with the air inlet of being connected with outside high-pressure air source, be equipped with in the cylinder body with its internal separation into cavity and the bearing plate of cavity down, bearing plate and cylinder body inner wall sealing sliding connection, the cavity and air inlet intercommunication, the valve rod upper end extends to the cavity down and is connected with the bearing plate, be equipped with the spring between the diapire of bearing plate and cylinder body.

Preferably, the cylinder body is provided with a first auxiliary hole for communicating the lower cavity with the outside of the cylinder body.

Preferably, the water inlet of the valve body is provided with a lower mounting hole which is positioned on the same central axis with the sliding hole and the first cavity, the diameter of the lower mounting hole is larger than that of the first cavity, a plug with a central through hole is embedded in the lower mounting hole, and the diameter of the valve rod is larger than the inner diameter of the central through hole.

Preferably, the lower end face of the plug is a conical face, the upper end of the plug is provided with a plugging groove which is positioned on the same central axis with the central through hole, and the diameter of the valve rod is smaller than that of the plugging groove.

Preferably, one end of the water outlet connector, which is far away from the water outlet, is sleeved on the periphery of the valve body, a second cavity communicated with the water outlet is formed in the valve body, a water passing hole is formed in the valve body, one end of the water passing hole is connected with the first cavity, and the other end of the water passing hole is connected with the second cavity.

Preferably, the valve body is provided with a limiting boss and a limiting clamping groove, the water outlet connector is positioned between the limiting boss and the limiting clamping groove, and a clamping ring for fixing the position of the water outlet connector is embedded in the limiting groove.

Preferably, two first sealing assemblies are arranged between the water outlet joint and the valve body, and the two first sealing assemblies are positioned on two sides of the second cavity.

Preferably, the valve rod comprises an upper rod body and a lower rod body, the upper end of the upper rod body is in threaded connection with the bearing plate, the lower end of the upper rod body is in contact with the top end of the lower rod body, the lower rod body is in sliding connection with the sliding hole, and a second sealing assembly for realizing the sealing function between the lower rod body and the sliding hole is sleeved on the lower rod body.

Preferably, the upper end of the valve body is provided with an upper mounting hole on the same central axis as the sliding hole, the upper mounting hole is internally connected with a valve seat in a threaded manner, the lower end of the upper rod body and the upper end of the lower rod body are both arranged in the valve seat and are in sliding connection with the inner wall of the lower rod body, the diameter of the lower rod body is smaller than that of the upper rod body, and the second sealing assembly is positioned between the valve seat and the sliding hole.

Preferably, the valve seat is provided with an overflow hole, and the overflow hole is communicated with a second auxiliary hole arranged on the side wall of the valve body.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The utility model is arranged on a high-pressure water conveying pipeline, and under the combined action of a constant-pressure compressed air source and the high-pressure water conveying pipeline, the up-and-down motion of the bearing plate and the valve rod is controlled, the flow direction of high-pressure water is controlled, when the water pressure is higher than the preset air pressure, the high-pressure water enters the valve body and is discharged through the water outlet of the water outlet joint, and when the water pressure is lower than or equal to the preset air pressure, the high-pressure water in the conveying pipeline is normally conveyed, so that the safety of a pressure system and the constant water pressure are effectively ensured;

(2) According to the utility model, the plug is additionally arranged to be matched with the valve rod, so that the trouble of frequent replacement of the valve body caused by long-term impact of high-pressure water on the inner wall of the valve body can be effectively reduced, the maintenance cost is effectively reduced, and the valve rod is of a split structure, and the upper end and the lower end of the lower rod body are of symmetrical structures, so that the use cost is further reduced;

(3) The water outlet joint, the cylinder body and the valve seat and the upper mounting hole are all of detachable connection structures, so that the water outlet joint is convenient to disassemble and assemble and convenient to use.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings.

FIG. 1 is a schematic view of a view angle structure of the present utility model;

FIG. 2 is a schematic view of another view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

FIG. 4 is a schematic view of the structure of the valve body of the present utility model;

FIG. 5 is a schematic cross-sectional view of the valve body of the present utility model;

FIG. 6 is a schematic structural view of a plug according to the present utility model;

FIG. 7 is a schematic view of the water outlet connector of the present utility model;

in the figure: 1. valve body, 2, valve rod, 201, upper rod body, 202, lower rod body, 3, water outlet joint, 4, water inlet, 5, slide hole, 6, first cavity, 7, water outlet, 8, cylinder, 9, air inlet, 10, bearing plate, 11, spring, 12, upper cavity, 13, lower cavity, 14, first auxiliary hole, 15, lower mounting hole, 16, plug, 1601, central through hole, 1602, conical surface, 17, inserting groove, 18, second cavity, 19, water passing hole, 20, limit boss, 21, limit clamping groove, 22, clamping ring, 23, first sealing component, 24, second sealing component, 25, upper mounting hole, 26, valve seat, 27, overflow hole, 28, second auxiliary hole, 29, third cavity, 30, cover plate, 31, third sealing component.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "middle," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1, fig. 2 and fig. 3, an air proportional control valve comprises a valve body 1, a valve rod 2 and a water outlet joint 3, wherein the lower end of the valve body is provided with a water inlet 4 connected with an external high-pressure water conveying pipeline, a sliding hole 5 and a first cavity 6 which are mutually communicated are arranged in the valve body, the diameter of the first cavity is larger than that of the sliding hole, the upper end of the valve rod is in sealing sliding connection with the sliding hole, the lower end of the valve rod is positioned in the first cavity and is mutually matched with the water inlet, when the valve rod is attached to the water inlet, the first cavity is communicated with the outside of the water inlet, when the valve rod is separated from the outside of the water inlet, the first cavity is separated from the outside of the water inlet, the attachment and separation of the valve rod and water inlet can realize the waterway communication and separation function between the first cavity and the inside of the high-pressure water conveying pipeline, one end of the water outlet joint is provided with a water outlet 7, the other end of the water outlet joint is communicated with the first cavity, the upper end of the valve body is provided with a cylinder body 8, the top end of the cylinder body is provided with a cover plate 30, the two parts are detachably connected, the dismounting is convenient, a sealing gasket is arranged, the sealing performance is ensured, the top of the cylinder body is provided with an air inlet 9 connected with an external high-pressure source, when the valve rod is attached to the inner cavity 12, the inside of the cylinder body is provided with the cylinder body, and is provided with an upper pressure bearing cavity 12 and an upper pressure bearing cavity is connected with an air inlet and an air inlet, an upper cavity and an air inlet, an air cylinder is connected with an air inlet, an air inlet and an air sealing cavity. Under the normal state of the utility model, the compressed air source provides a certain pressure for the pressure bearing plate (the preset value can be preset according to actual needs) so as to ensure that the pressure bearing plate is balanced with the pressure in the high-pressure water conveying pipeline, at the moment, the first cavity and the inside of the high-pressure water conveying pipeline are in a partition state, when the water pressure in the high-pressure water conveying pipeline is reduced, the pressure bearing plate can cause the valve rod to drive the valve rod to press down so as to block the water inlet at the lower end of the valve body, and the first cavity and the inside of the high-pressure water conveying pipeline are still in the partition state; when a nozzle connected to the high-pressure water conveying pipeline stops working, the water pressure in the pipeline can rise, the high-pressure water can drive the valve rod to slide upwards, water in the conveying pipeline enters the first cavity and flows out from the water outlet of the water outlet joint after passing through the water hole and the second cavity, the unloading function is realized, and the discharged water can flow back into the high-pressure water supply water tank through the pipeline; when the nozzle connected to the high-pressure water conveying pipeline works again, the water pressure in the pipeline is reduced to the original value, and the air pressure above the bearing plate and the water pressure born by the bottom end of the valve rod are balanced again.

As shown in fig. 3 and 5, a lower mounting hole 15 is formed at the water inlet of the valve body and located on the same central axis as the sliding hole and the first cavity, the diameter of the lower mounting hole is larger than that of the first cavity, a plug 16 with a central through hole 1601 is embedded in the lower mounting hole, and the lower end surface of the plug is a conical surface 1602 as shown in fig. 6, and the diameter of the valve rod is larger than the inner diameter of the central through hole. When the valve is used, the lower end of the valve body is provided with external threads, a water inlet connector (not shown in the figure) can be connected to a high-pressure water conveying pipeline, the external threads at the lower end of the valve body are matched and connected with the internal threads inside the water inlet connector, the plug is clamped between the external threads and the internal threads to be fixed, the conical surface at the lower end of the plug can be matched with the water inlet connector to realize sealing, and the high-pressure water enters the valve body to generate certain destructive force on the inner wall of the valve body, so that the valve body is easy to wear.

As shown in fig. 3 and 7, the one end cover that the water outlet was kept away from to the water joint locates the valve body periphery, and its inside is equipped with the second cavity 18 with the delivery port intercommunication, be equipped with water hole 19 on the valve body, water hole one end is connected first cavity, the second cavity is connected to the other end, water joint and valve body are detachable connection structure, be convenient for dismouting and maintenance, combine the fig. 4 to show, be equipped with spacing boss 20 and spacing draw-in groove 21 on the valve body, water joint is located between spacing boss and the spacing draw-in groove, the spacing inslot is equipped with the rand 22 that is used for fixing water joint position, the rand can realize the axial positioning of water joint, be equipped with two first seal assembly 23 between water joint and the valve body, two first seal assembly are located the both sides of second cavity, improve the leakproofness of being connected between it and the valve body.

As shown in fig. 3, the valve rod includes an upper rod 201 and a lower rod 202, the upper end of the upper rod is in threaded connection with the bearing plate, so that the valve rod is convenient to disassemble and assemble, the lower end of the valve rod is impacted by high-pressure water for a long time, and when the valve rod is damaged and needs to be replaced, only the lower rod needs to be replaced, so that maintenance cost is reduced, and in the embodiment, the upper end and the lower end of the lower rod are of symmetrical structures, the installation direction can be replaced at will, and the service life of the valve rod is greatly prolonged. The lower end of the upper rod body is in contact with the top end of the lower rod body, the lower rod body is in sliding connection with the sliding hole, a second sealing assembly 24 for realizing the sealing function between the lower rod body and the sliding hole is sleeved on the lower rod body, an upper mounting hole 25 on the same central axis with the sliding hole is arranged at the upper end of the valve body, a valve seat 26 is connected in the upper mounting hole in a threaded manner, the lower end of the upper rod body and the upper end of the lower rod body are both arranged in the valve seat and are in sliding connection with the inner wall of the valve seat, the diameter of the lower rod body is smaller than that of the upper rod body, an annular third cavity 29 is formed among the outer wall of the lower rod body, the bottom end face of the lower rod body and the inner wall of the valve seat, the second sealing assembly is arranged between the valve seat and the sliding hole, an overflow hole 27 is arranged on the valve seat, the overflow hole is communicated with a second auxiliary hole 28 arranged on the side wall of the valve body, when the second sealing assembly is damaged, water in the first cavity flows into the third cavity through the sliding hole, and water in the third cavity flows into the second auxiliary hole through the overflow hole, and is discharged out of the valve body. Under the normal use condition, when water flows out of the second auxiliary hole, the second sealing component is indicated to be damaged and needs to be replaced in time; in addition, the second auxiliary hole can also realize air circulation between the third cavity and the outside of the valve body, so that the air resistance phenomenon formed in the third cavity is avoided. In this embodiment, the first sealing assembly, the second sealing assembly and the third sealing assembly are all sealing gaskets, which are not described herein.

The working principle of the utility model is as follows:

(1) High-pressure water normal conveying state: the lower end of the valve body 1 is communicated with a high-pressure water conveying pipeline, a water outlet 7 of the water outlet joint 3 is connected with the water tank through a pipeline, a water inlet end of the high-pressure water conveying pipeline is connected with the water tank and conveying equipment, a water outlet end of the high-pressure water conveying pipeline is connected with a high-pressure nozzle, a compressed air source provides certain air pressure for an upper cavity 12 of the cylinder body 8, a valve rod bears upward water pressure in the high-pressure water conveying pipeline, the upward water pressure borne by the bearing plate 10 and the downward air pressure are balanced, at the moment, a central through hole 1601 in the middle of the plug 16 is blocked by the valve rod 2, and the first cavity 6 is in a blocking state with the inside of the high-pressure water conveying pipeline;

(2) The nozzle is closed, and the high-pressure cleaning working state is stopped: because the conveying equipment does not stop working, the water pressure in the pipeline is increased and is greater than the preset air pressure, the generated high-pressure water enters the central through hole 1601 of the plug 16 through the water inlet 4 of the valve body 1, the valve rod 2 drives the bearing plate 10 upwards to move, the lower end of the valve rod 2 is separated from the plug 16, the high-pressure water enters the inserting groove 17 and flows back to the water tank from the water outlet 7 after passing through the first cavity 6, the water passing hole 19 and the second cavity 18 in sequence;

(3) The nozzle works again, and the high-pressure cleaning working state is started: the high-pressure water is sprayed out again through the nozzle, the water pressure in the high-pressure water conveying pipeline is balanced with the preset air pressure again, the normal working state is restored, and the water outlet joint stops water outlet.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. An air ratio control valve, characterized in that: including valve body, valve rod and play water joint, the valve body lower extreme is equipped with the water inlet of being connected with outside high-pressure water delivery pipeline, be equipped with slide hole and first cavity of intercommunication in the valve body, the diameter of first cavity is greater than the diameter of slide hole, valve rod upper end and slide hole sealing sliding connection, the lower extreme is located first cavity and mutually support with the water inlet, when valve rod and water inlet subsides, first cavity and the outside intercommunication of water inlet, when valve rod and water inlet separation, first cavity cuts off with the water inlet outside, the one end of play water joint is equipped with the delivery port, the other end and first cavity intercommunication, the valve body upper end is equipped with the cylinder body, the cylinder body top is equipped with the air inlet of being connected with outside high-pressure air source, be equipped with in the cylinder body with its internal separation into cavity and the bearing plate of cavity down, bearing plate and cylinder body inner wall sealing sliding connection, the cavity and air inlet intercommunication, the valve rod upper end extends to the cavity down and is connected with the bearing plate, be equipped with the spring between the diapire of bearing plate and cylinder body.

2. An air ratio control valve according to claim 1, wherein: the cylinder body is provided with a first auxiliary hole for communicating the lower cavity with the outside of the cylinder body.

3. An air ratio control valve according to claim 1, wherein: the water inlet of the valve body is provided with a lower mounting hole which is positioned on the same central axis with the sliding hole and the first cavity, the diameter of the lower mounting hole is larger than that of the first cavity, a plug with a central through hole is embedded in the lower mounting hole, and the diameter of the valve rod is larger than the inner diameter of the central through hole.

4. An air ratio control valve according to claim 3, wherein: the lower end face of the plug is a conical face, the upper end of the plug is provided with a plugging groove which is located on the same central axis with the central through hole, and the diameter of the valve rod is smaller than that of the plugging groove.

5. An air ratio control valve according to claim 1, wherein: the one end cover that the water outlet was kept away from the delivery port is located the valve body periphery, and its inside is equipped with the second cavity with delivery port intercommunication, be equipped with the water hole on the valve body, first cavity is connected to water hole one end, and the second cavity is connected to the other end.

6. An air ratio control valve according to claim 5, wherein: the valve body is provided with a limiting boss and a limiting clamping groove, the water outlet connector is located between the limiting boss and the limiting clamping groove, and a clamping ring for fixing the position of the water outlet connector is embedded in the limiting clamping groove.

7. An air ratio control valve according to claim 5, wherein: two first sealing assemblies are arranged between the water outlet joint and the valve body, and the two first sealing assemblies are positioned on two sides of the second cavity.

8. An air ratio control valve according to claim 1, wherein: the valve rod comprises an upper rod body and a lower rod body, the upper end of the upper rod body is in threaded connection with the bearing plate, the lower end of the upper rod body is in contact with the top end of the lower rod body, the lower rod body is in sliding connection with the sliding hole, and a second sealing assembly for realizing the sealing function between the lower rod body and the sliding hole is sleeved on the lower rod body.

9. An air ratio control valve according to claim 8, wherein: the valve body upper end is equipped with the last mounting hole on the same central axis with the slide hole, go up mounting hole internal thread and be connected with the disk seat, the disk seat is all located to the lower extreme of going up the body of rod, the upper end of lower body of rod and rather than inner wall sliding connection, the diameter of lower body of rod is less than the diameter of last body of rod, second seal assembly is located between disk seat and the slide hole.

10. An air ratio control valve according to claim 9, wherein: and the valve seat is provided with an overflow hole which is communicated with a second auxiliary hole arranged on the side wall of the valve body.