Water pressure regulation and control type high-pressure pump valve seat

Abstract

The utility model relates to the technical field of water pressure regulation, in particular to a water pressure regulation type high-pressure pump valve seat which comprises a valve body, a water passing cavity is formed in the valve body in a penetrating mode, a mounting groove is formed in one end of the inner bottom wall of the water passing cavity, and a sliding groove is formed in the other end of the inner bottom wall of the water passing cavity. A spring is arranged on the bottom wall of the mounting groove, a pressing column is arranged in the mounting groove above the spring, the pressing column is in sliding sealing connection with the inner wall of the mounting groove in the vertical direction, a flow limiting plate is arranged in the sliding groove, and the flow limiting plate is in sliding sealing connection with the inner wall of the sliding groove in the vertical direction; an extension groove is formed in the pressing column, an extension hole is formed in the flow limiting plate, a lever is rotationally arranged in the communicating cavity, one end of the lever extends into the extension groove, and the other end of the lever extends into the extension hole; the pressing column is larger than the top wall area of the flow limiting plate and presses the corresponding end of the lever when moving downwards, and the other end of the lever moves upwards to jack up the flow limiting plate to conduct flow limiting on the water passing cavity. The faucet is simple in structure, and the water outlet pressure is convenient to regulate and control.

Description

Technical Field

[0001] The utility model relates to the technical field of water pressure regulation, in particular to a water pressure regulating type high pressure pump valve seat. Background Art

[0002] High-pressure plunger pumps are suitable for use in the petroleum, chemical, and fertilizer industries as process pumps, high-pressure water descaling in metallurgy and steel rolling mills, high-pressure water cleaning and descaling in construction, shipbuilding, sugar, papermaking, chemical and other industries, oil field water injection, boiler water supply, and hydraulic machinery power source, as well as food, pharmaceuticals and other parts that require the generation of high-pressure liquids. The conveying medium is a fluid without solid particles.

[0003] High-pressure pump systems usually use some valves to adjust the water pressure of the corresponding sections of each pipeline. Valves are control components in fluid delivery systems and have functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shutoff valves to various valves used in extremely complex automatic control systems.

[0004] In the related art, valves with more functions have a more complex structure and therefore a higher manufacturing cost, while simple stop valves generally require manual adjustment. For example, when a stop valve is set on the pipeline of a high-pressure pump system, the water pressure of the corresponding pipeline is usually expected to be stable. Since the output water pressure of the high-pressure pump is very high, the opening degree of the stop valve can be manually reduced to reduce the water pressure of the corresponding pipeline. When there are many supply pipelines to the high-pressure pump, the water supply pressure of the corresponding pipeline may also be reduced. At this time, the stop valve needs to be manually increased in the hope of increasing the water pressure of the corresponding pipeline. This commonly used stop valve with a simple structure needs to be manually adjusted in its opening degree frequently, and its use is relatively cumbersome.

[0005] Therefore, there is an urgent need for a valve seat structure that is relatively simple in structure and convenient for regulating pipeline water pressure. Utility Model Content

[0006] The utility model aims to provide a water pressure regulating type high pressure pump valve seat to solve the problem that the valve with simple structure in the related art is inconvenient to regulate the water pressure of the pipeline.

[0007] The utility model is realized by the following technical solutions:

[0008] A water pressure regulating high-pressure pump valve seat comprises a valve body, wherein a water-passing cavity is formed inside the valve body, an installation groove is formed at one end of an inner bottom wall of the water-passing cavity, and a sliding groove is formed at the other end, a connecting cavity is connected between the lower end of the installation groove and the lower end of the sliding groove, a spring is provided on the bottom wall of the installation groove, a pressure column is provided in the installation groove above the spring, the pressure column is connected to the inner wall of the installation groove in a vertical sliding seal, a limiting flow plate is provided in the sliding groove, and the limiting flow plate is connected to the inner wall of the sliding groove in a vertical sliding seal; an extension groove is provided on the pressure column, an extension hole is provided on the limiting flow plate, a lever is rotatably provided in the connecting cavity, one end of the lever extends into the extension groove, and the other end extends into the extension hole; the pressure column is larger than the top wall area of ​​the limiting flow plate, and when the pressure column moves downward, it presses down the corresponding end of the lever, and the other end of the lever moves upward to lift the limiting flow plate to limit the flow of the water-passing cavity.

[0009] Furthermore, a sealing ring is provided on the outer wall of the pressure column, and the sealing ring can slide and seal with the inner wall of the installation groove in the vertical direction; a sealing strip is provided on the outer wall of the flow limiting plate, and the sealing strip can slide and seal with the inner wall of the sliding groove in the vertical direction.

[0010] Furthermore, the distance between the fulcrum of the lever and the mounting slot is smaller than the distance between the fulcrum and the sliding slot.

[0011] Furthermore, flanges are provided on the valve bodies corresponding to the two ends of the water passage cavity.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] When the valve is in a closed position, the water pressure in the valve body will increase, and the pressure in the valve body will increase. When the valve is in a closed position, the water pressure in the valve body will increase, and the pressure in the valve body will increase. When the valve is in a closed position, the water pressure in the valve body will increase, and the pressure in the valve body will increase. When the valve is in a closed position, the water pressure in the valve body will increase, and the pressure in the valve body will increase. The limiting plate is equivalent to the valve core structure of a valve. As the cross-sectional area of ​​the water flowing through the limiting plate is reduced, the flow rate and water pressure of the water flow in front of the limiting plate are reduced, which is beneficial to protecting the safe use of the front pipeline. When the water pressure passing through the valve body becomes smaller, the elastic force of the spring is greater than the water pressure. The spring will drive the pressure column to move upward, and the pressure column drives the corresponding end of the lever to move upward. The lever rotates, and the other end of the lever moves downward, thereby driving the limiting plate downward, thereby increasing the flow rate of water passing above the limiting plate, thereby increasing the water outflow and water pressure of the valve body. This solution can automatically regulate the outlet water pressure to a certain extent, so that the outlet water pressure is relatively stable, and the valve seat structure is simple, the production cost is low, and it is not easy to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model.

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model, which is intended to show the state of the valve body when no water flows;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model, which is intended to show the state when the water pressure in the valve body is high.

[0018] Marks and corresponding parts names in the attached drawings:

[0019] 1. Valve body; 2. Water passage cavity; 3. Installation groove; 4. Sliding groove; 5. Connecting cavity; 6. Spring; 7. Pressure column; 8. Current limiting plate; 9. Extension groove; 10. Extension hole; 11. Lever; 12. Sealing ring; 13. Sealing strip; 14. Flange. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0021] Example 1

[0022] A water pressure regulating high pressure pump valve seat, referring to Figure 1 , Figure 2 , including a valve body 1, a water-passing cavity 2 is provided through the valve body 1, a mounting groove 3 is provided at one end of the inner bottom wall of the water-passing cavity 2, and a sliding groove 4 is provided at the other end, a connecting cavity 5 is provided between the lower end of the mounting groove 3 and the lower end of the sliding groove 4, a spring 6 is provided on the bottom wall of the mounting groove 3, the spring 6 extends vertically upward, a pressure column 7 is welded in the mounting groove 3 above the spring 6, the pressure column 7 is connected to the inner wall of the mounting groove 3 in a sliding seal in the vertical direction, a limiting plate 8 is provided in the sliding groove 4, and the limiting plate 8 is connected to the inner wall of the sliding groove 4 in a sliding seal in the vertical direction; an extension groove 9 is provided on the pressure column 7, an extension hole 10 is provided on the limiting plate 8, a lever 11 is rotatably provided in the connecting cavity 5, one end of the lever 11 extends into the extension groove 9, and the other end extends into the extension hole 10; the pressure column 7 is larger than the top wall area of ​​the limiting plate 8, when the pressure column 7 moves downward, it presses down the corresponding end of the lever 11, and the other end of the lever 11 moves upward to lift the limiting plate 8 to limit the flow of the water-passing cavity 2.

[0023] In this solution, the valve seat is installed on a pipeline of the high-pressure pump system, so that the port of the connecting chamber 5 close to the end of the pressure column 7 is the water inlet end of the valve body 1. The pressure column 7 is located in the installation groove 3 in the initial state. The high-pressure pump pumps the high-pressure water through the valve body 1. When the water pressure passing through the valve body 1 is too high, the high water pressure squeezes the pressure column 7 downward, and the pressure column 7 moves downward. At this time, the spring 6 contracts downward, and the pressure column 7 squeezes the lever 11 downward. At this time, the lever 11 rotates, and the other end of the lever 11 is lifted upward, thereby lifting the limiting plate 8 upward, and the water pressure in the valve body 1 behind the limiting plate 8 gradually increases, but the output water pressure of the high-pressure pump has a certain upper limit, and the water pressure in the valve body 1 will not increase indefinitely, and the water body, the pressure column 7, the spring 6, the lever 11 and the limiting plate 8 will form a new mechanical balance. At this time, the upper end of the limiting plate 8 extends into the water passing chamber 2, thereby limiting the flow of water flowing in the water passing chamber 2. The limiting plate 8 is equivalent to a valve The valve core structure of the door reduces the cross-sectional area of ​​the water flowing through the limiting plate 8, thereby reducing the flow rate and water pressure of the water flow in front of the limiting plate 8, which is beneficial to protecting the safety of the front pipeline; when the water pressure passing through the valve body 1 becomes smaller, the elastic force of the spring 6 is greater than the water pressure, and the spring 6 will drive the pressure column 7 to move upward, and the pressure column 7 drives the corresponding end of the lever 11 to move upward, the lever 11 rotates, and the other end of the lever 11 moves downward, thereby driving the limiting plate 8 to move downward, and the water body, the pressure column 7, the spring 6, the lever 11 and the limiting plate 8 will form a new mechanical balance again. After the limiting plate 8 moves downward, the flow rate of the water body passing through the top of the limiting plate 8 will increase, thereby increasing the water flow rate and water pressure of the valve body 1; this solution can automatically regulate the water outlet pressure of the valve seat in the high-pressure pump system to a certain extent, so that the water outlet pressure is relatively stable, reducing the need for frequent manual adjustment of the valve operation, and the valve seat structure is simple, the production cost is low, and it is not easy to malfunction and damage.

[0024] Furthermore, a sealing ring 12 is provided on the outer wall of the pressure column 7, and the sealing ring 12 can slide and seal with the inner wall of the installation groove 3 in the vertical direction; a sealing strip 13 is provided on the outer wall of the flow limiting plate 8, and the sealing strip 13 can slide and seal with the inner wall of the sliding groove 4 in the vertical direction. The sealing ring 12 can separate the installation groove 3 below the pressure column 7 from the water passage chamber 2, and the sealing strip 13 can separate the sliding groove 4 below the flow limiting plate 8 from the water passage chamber 2, so that the spring 6 can be compressed or extended according to the water pressure in the water passage chamber 2, thereby realizing the effect of whether the flow limiting plate 8 needs to limit the flow and reduce pressure or increase pressure; if water enters below the pressure column 7 and the flow limiting plate 8, water pressure will exist below the pressure column 7, and the water pressure below the pressure column 7 will hinder the downward movement of the pressure block, which is not conducive to the pressure column 7 and the spring 6 to respond in time according to the water pressure in the water passage chamber 2.

[0025] Example 2

[0026] The difference between this embodiment and embodiment 1 is that in this embodiment, referring to Figure 1 , Figure 2, the distance between the fulcrum of the lever 11 and the mounting slot 3 is smaller than the distance between the fulcrum of the lever 11 and the sliding slot 4; the purpose of this design is that when the pressure column 7 is displaced, the flow limiting plate 8 can synchronously make a larger displacement. For example, when the water pressure in the water passage chamber 2 is particularly high, the pressure column 7 moves downward more. According to the principle of similar triangles, the flow limiting plate 8 will rise more, so that the flow limiting plate 8 can play a significant flow limiting role, thereby quickly reducing the outlet water pressure of the valve seat, which is conducive to improving the response sensitivity of the flow limiting plate 8. The other structures of this embodiment are the same as those of embodiment 1, so they are not repeated here.

[0027] Example 3

[0028] The difference between this embodiment and embodiment 1 is that in this embodiment, referring to Figure 1 , Figure 2 Flanges 14 are provided on the valve body 1 corresponding to both ends of the water passage cavity 2. The valve seat can be conveniently installed on the pipeline of the high-pressure pump system through the flange 14, and can be conveniently disassembled for maintenance or replacement.

[0029] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A water pressure regulating high pressure pump valve seat, characterized in that: The invention comprises a valve body (1), wherein a water passage cavity (2) is provided inside the valve body (1), a mounting groove (3) is provided at one end of the inner bottom wall of the water passage cavity (2), and a sliding groove (4) is provided at the other end, a connecting cavity (5) is provided between the lower end of the mounting groove (3) and the lower end of the sliding groove (4), a spring (6) is provided on the bottom wall of the mounting groove (3), a pressure column (7) is provided in the mounting groove (3) above the spring (6), the pressure column (7) is connected to the inner wall of the mounting groove (3) in a sliding sealing manner in the vertical direction, a limiting flow plate (8) is provided in the sliding groove (4), and the limiting flow plate (8) is provided in the sliding groove (4), and the limiting flow plate (8) is provided in the sliding groove (4). The plate (8) is connected to the inner wall of the sliding groove (4) in a sliding and sealing manner in the vertical direction; an extension groove (9) is provided on the pressure column (7), an extension hole (10) is provided on the flow limiting plate (8), and a lever (11) is rotatably arranged in the connecting cavity (5), one end of the lever (11) extends into the extension groove (9), and the other end extends into the extension hole (10); the pressure column (7) is larger than the top wall area of ​​the flow limiting plate (8), and when the pressure column (7) moves downward, it presses down the corresponding end of the lever (11), and the other end of the lever (11) moves upward to lift the flow limiting plate (8) to limit the flow of the water passage cavity (2).

2. A water pressure regulating high pressure pump valve seat according to claim 1, characterized in that: The outer wall of the pressure column (7) is provided with a sealing ring (12), and the sealing ring (12) and the inner wall of the installation groove (3) can slide and seal in the vertical direction; the outer wall of the flow limiting plate (8) is provided with a sealing strip (13), and the sealing strip (13) and the inner wall of the sliding groove (4) can slide and seal in the vertical direction.

3. The water pressure regulating high pressure pump valve seat according to claim 1, characterized in that: The distance between the fulcrum of the lever (11) and the installation groove (3) is smaller than the distance between the fulcrum and the sliding groove (4).

4. The water pressure regulating high pressure pump valve seat according to claim 1, characterized in that: Flange plates (14) are provided on the valve bodies (1) corresponding to the two ends of the water passage cavity (2).

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