A pressure increasing valve using filter screen to assist steel ball reset

Abstract

The application provides a booster valve using a filter screen to assist in resetting a steel ball, comprising an electromagnetic valve assembly and a one-way valve assembly, the electromagnetic valve assembly is provided with a first radial hole, the one-way valve assembly has a first channel, a second channel and a first port, and the two are further provided with a second radial hole, the first channel can communicate the first radial hole and the first port, the second channel can communicate the second radial hole and the first port, and the first port is provided with a filter screen and a steel ball between the first port and the second channel; when the liquid flows to the first radial hole and the second radial hole, the filter screen protrudes to one side of the steel ball and pushes the steel ball to move to one side of the second channel; when the liquid flows to the first port, the filter screen protrudes to one side of the first port, and the steel ball moves to one side of the first port; by changing the position of the filter screen, the filter screen is driven to protrude when the liquid passes through the filter screen, and then the steel ball is pushed to move to one side of the second channel, so that the steel ball moves earlier than the existing structure, and the response speed of the one-way valve assembly is faster.

Description

Technical Field

[0001] This application relates to the field of solenoid valve technology, and in particular to a pressure boosting valve that utilizes a filter screen to assist in the reset of a steel ball. Background Technology

[0002] Anti-lock braking system (ABS) automatically controls the braking force of the brakes during vehicle braking, maintaining maximum adhesion between the wheels and the ground to ensure the minimum braking distance. It also ensures vehicle braking stability and improves driving safety and comfort.

[0003] Currently, normally open solenoid valves are commonly used in anti-lock braking systems for braking logic control. In existing technology, the one-way valve assembly of the normally open solenoid valve includes a one-way valve passage located in the valve body and connected to the valve body inlet. A steel ball is located at the lower end of the one-way valve passage. The steel ball seals the one-way valve passage under the action of the liquid pressure and viscosity generated during flow in the valve body. However, due to the presence of a filter screen at the end of the valve body, the overall response time will be longer when the liquid pressure is low, and the one-way valve sealing will be worse. Furthermore, since the diameter of the steel ball is small (less than 2mm), assembling a return spring below the steel ball would result in excessively high processing and assembly costs, making it difficult to implement. Utility Model Content

[0004] The purpose of this application is to address the above problems by providing a pressure boosting valve that utilizes a filter screen to assist in the reset of a steel ball, comprising: A solenoid valve assembly having a first radial hole; A one-way valve assembly is disposed at one end of a solenoid valve assembly. The one-way valve assembly has a first channel and a second channel. A second radial hole is provided between the one-way valve assembly and the solenoid valve assembly, and a first port is provided at the end away from the solenoid valve assembly. The first channel is used to connect the first radial hole and the first port, and the second channel is used to connect the second radial hole and the first port. A filter screen is provided between the first port and the second channel, and a steel ball is also provided between the filter screen and the second channel. When liquid flows from the first port to the first radial hole and the second radial hole, the filter screen bulges towards the steel ball under the action of liquid pressure, and pushes the steel ball towards the second channel; when liquid flows from the first radial hole and the second radial hole to the first port, the filter screen bulges towards the first port, and the steel ball moves towards the first port.

[0005] According to the technical solutions provided in certain embodiments of this application, the one-way valve assembly further includes: A base is disposed at one end of the solenoid valve assembly. The base has a first channel and a second channel. The end of the base away from the solenoid valve assembly has a mounting cavity. A filter frame is fitted tightly within the mounting cavity, forming a filtration space between the filter frame and the base, and the filter sheet is disposed within the filtration space; the end of the filter frame away from the base has a first port, which penetrates the filter frame and communicates with the filtration space.

[0006] According to certain embodiments of the present application, the technical solutions provided are as follows: The first channel is formed along the axis of the base, and the second channel is formed on one side of the first channel; The filter frame is also provided with a support member, which is fixed to the filter sheet. The support member divides the filter sheet and the filtration space into two equal parts, one of which is the filter sheet corresponding to the second channel.

[0007] According to the technical solutions provided in certain embodiments of this application, the filter frame is provided with a first limiting structure, which corresponds to the filter sheet and the steel ball along the axial direction of the first channel, and is used to limit the stroke of the steel ball.

[0008] According to the technical solutions provided in certain embodiments of this application, the distance between the first limiting structure and the end face of the second channel near the first limiting structure is less than the diameter of the steel ball.

[0009] According to the technical solutions provided in certain embodiments of this application, the area of ​​each portion of the filter screen is greater than the cross-sectional area of ​​each portion of the filtration space along the radial direction of the filter screen skeleton.

[0010] According to the technical solutions provided in certain embodiments of this application, the solenoid valve assembly includes: A valve body, one end of which is fitted with a magnetic shielding tube, and a plurality of the first radial holes are provided on the valve body; A valve seat is tightly fitted inside the valve body and fixed to the one-way valve assembly. The valve seat has a valve port for connecting the first channel and multiple first radial holes. A valve core mechanism is disposed on the valve body and is used to control the opening and closing of the valve port under the action of electromagnetic force.

[0011] According to the technical solutions provided in certain embodiments of this application, a second limiting structure is provided in the valve body, and the valve core mechanism includes: A moving iron, wherein the moving iron is disposed inside the magnetic shielding tube; A valve core is located at one end of the moving iron near the valve port, and an elastic element is provided between the valve core and the second limiting structure.

[0012] According to the technical solutions provided in certain embodiments of this application, the second channel has a first conical cavity at one end near the filter screen, and the steel ball is used to tightly fit with the first conical cavity to seal the second channel.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: This application provides a pressure boosting valve that utilizes a filter screen to assist in the reset of a steel ball, including a solenoid valve assembly. The solenoid valve assembly has a first radial hole, and one end of the solenoid valve assembly has a one-way valve assembly. The one-way valve assembly has a first channel and a second channel. A second radial hole is provided between the one-way valve assembly and the solenoid valve assembly, and a first port is provided at the end away from the solenoid valve assembly. The first channel is used to connect the first radial hole and the first port, and the second channel is used to connect the second radial hole and the first port. A filter screen is provided between the first port and the second channel, and a steel ball is also provided between the filter screen and the second channel. When liquid flows from the first port to the first radial hole and the second channel... When the liquid flows into the orifice, the filter screen bulges towards the steel ball under the pressure of the liquid, pushing the steel ball towards the second channel. When the liquid flows from the first radial hole and the second radial hole towards the first port, the filter screen bulges towards the first port, and the steel ball moves towards the first port. By changing the position of the filter screen in the one-way valve assembly, the viscosity and pressure of the liquid itself are used to make the filter screen bulge towards the steel ball when the liquid passes through it, thereby pushing the steel ball towards the second channel. This avoids the problem that some liquids, after passing through the filter screen, are not strong enough to move the steel ball due to low pressure or viscosity, resulting in a long response time for the one-way valve. Compared with the existing structure, the steel ball moves earlier and the response speed is faster.

[0014] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A cross-sectional schematic diagram of a pressure booster valve that uses a filter screen to assist in the repositioning of a steel ball, provided as an embodiment of this application; Figure 2 A cross-sectional schematic diagram of the one-way valve assembly of a booster valve that uses a filter screen to assist in the repositioning of a steel ball, provided in an embodiment of this application, when the valve assembly is in the open state. Figure 3 A cross-sectional schematic diagram of the one-way valve assembly of a booster valve that uses a filter screen to assist in the resetting of a steel ball, provided in an embodiment of this application, when it is in the closed state; Figure 4 This application provides a schematic diagram of the structure of a filter screen frame for a pressure booster valve that uses a filter screen to assist in the resetting of a steel ball. Figure 5 This is a cross-sectional schematic diagram of the filter screen skeleton of a pressure booster valve that uses a filter screen to assist in the resetting of a steel ball, as provided in an embodiment of this application.

[0017] The text labels in the image represent: 1. One-way valve assembly; 2. Solenoid valve assembly; 11. Filter screen; 12. Steel ball; 13. Base; 14. Filter screen frame; 15. Support component; 21. Valve body; 22. Valve seat; 23. Moving iron; 24. Valve core; 25. Magnetic shielding tube; 26. Elastic component; 101. First channel; 102. Second channel; 103. First port; 104. Second radial hole; 141. First limiting structure; 201. First radial hole; 202. Valve port. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0019] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0020] As mentioned in the background section, to address the problems existing in the prior art, this embodiment provides a pressure boosting valve that utilizes a filter screen to assist in the reset of a steel ball, comprising: Solenoid valve assembly 2, the solenoid valve assembly has a first radial hole 201; A one-way valve assembly 1 is disposed at one end of a solenoid valve assembly 2. The one-way valve assembly 1 has a first channel 101 and a second channel 102. A second radial hole 104 is provided between the one-way valve assembly and the solenoid valve assembly 2, and a first port 103 is provided at the end away from the solenoid valve assembly 2. The first channel 101 is used to connect the first radial hole 101 and the first port 103, and the second channel 102 is used to connect the second radial hole 104 and the first port 103. A filter screen 11 is provided between the first port 103 and the second channel 102, and a steel ball 12 is also provided between the filter screen 11 and the second channel 102. When the liquid flows from the first port 103 to the first radial hole 201 and the second radial hole 104, the filter screen 11 bulges towards the steel ball 12 under the action of liquid pressure, and pushes the steel ball 12 to move towards the second channel 102; when the liquid flows from the first radial hole 201 and the second radial hole 104 to the first port 103, the filter screen 11 bulges towards the first port 103, and the steel ball 12 moves towards the first port 103.

[0021] like Figure 1-3As shown, this embodiment provides an electromagnetic booster valve with a normally open function. The electromagnetic valve assembly 2 is a normally open valve structure controlled by an electromagnetic coil. The one-way valve assembly 1 is located at one end of the electromagnetic valve assembly 2. The one-way valve assembly 1 has a first channel 101 and a second channel 102 inside, and a first port 103 is also provided at the end away from the electromagnetic valve assembly 2. The first port 103 can be connected to a first radial port 201 through the first channel 101, and can also be connected to a second radial hole 104 through the second channel 102. The electromagnetic valve assembly is used to control the opening and closing between the first channel 101 and the first radial port 201, and the one-way valve assembly 1 is used to control the opening and closing of the second channel 102. In the conventional electromagnetic booster valve structure, the filter screen 11 is set at the first port 103 to filter the liquid flowing through the first port 103. During filtration, the steel ball 12 can move freely between the filter base and the second channel 102. When the liquid flows from the first port 103 to the second channel 102, the steel ball 12 abuts against the port of the second channel 102 under the action of liquid pressure and viscosity, closing the second channel 102. When the liquid flows from the second channel 102 to the first port 103, the liquid pushes the steel ball 12 to open the second channel 102. Since the liquid first passes through the filter screen 11 when it flows from the first port 103 to the second channel 102, under the action of factors such as the surface tension of the filter screen 11 and the viscosity of the liquid, a large amount of liquid cannot pass through the filter screen 11 quickly in a short time. The part of the liquid that passes through the filter screen 11 first cannot drive the steel ball 12 to move, which leads to a long response time for the traditional one-way valve when it is closed.

[0022] In this embodiment, the filter screen 11 is disposed on the side of the first port 103 near the second channel 102. The filter screen 11 can be made of nylon or metal and has a certain elasticity and deformability. The mesh size of the filter screen 11 can be set according to actual needs and is not specifically limited here. A freely movable steel ball 12 is also provided between the filter screen 11 and the second channel 102.

[0023] When the liquid flows from the first port 103 to the first radial hole 201 and the second radial hole 104, both the filter screen 11 and the steel ball 12 are subjected to the pressure of the liquid. The liquid pressure on the filter screen 11 is:

[0024] Among them, F 滤 The liquid pressure exerted on filter screen 11 is P, where P is the liquid pressure and S is the liquid pressure. 滤 This refers to the force-bearing area of ​​the filter screen 11; The liquid pressure exerted on steel ball 12 is:

[0025] Among them, F 球 S is the liquid pressure exerted on the steel ball 12.球 Let be the area of ​​the steel ball 12 that experiences the force. Because the force-bearing area of ​​the filter screen 11 is greater than that of the steel ball 12, the filter screen 11 experiences greater liquid pressure under the same liquid pressure. Even if the liquid pressure is insufficient to move the steel ball 12, it can still deform the filter screen 11 by acting on it, forming a protrusion on the side of the second channel 102. This pushes the steel ball 12 to move towards the side of the second channel 102 until it abuts against one end of the second channel 102, thus closing the second channel 102. The liquid then flows from the first channel 101 to the first radial hole 201. When the liquid flows from the first radial hole 201 and the second radial hole 104 to the first port 103, the steel ball 12 moves towards the first port 103 under the action of the liquid pressure in the second channel 102. The second channel 102 opens, and the liquid in the second channel 102 and the first channel 101 acts on the filter screen 11, causing it to form a protrusion on the side of the first port 103.

[0026] By changing the position of the filter screen 11 inside the one-way valve assembly 1, and utilizing the viscosity and pressure of the liquid itself, the liquid causes the filter screen 11 to bulge towards the steel ball 12 when it passes through the filter screen 11, thereby pushing the steel ball 12 to move towards the second channel 102. This avoids the problem that some liquids, after passing through the filter screen 11, are not strong enough to move the steel ball 12 due to low pressure or viscosity, resulting in a long response time for the one-way valve. Compared with the existing structure, the steel ball 12 moves earlier and the response speed is faster.

[0027] In a preferred embodiment, the one-way valve assembly 1 further includes: The base 13 is located at one end of the solenoid valve assembly 2. The base 13 has a first channel 101 and a second channel 102. The end of the base 13 away from the solenoid valve assembly 2 has a mounting cavity. The filter frame 14 is tightly fitted inside the mounting cavity, and a filtration space is formed between the filter frame 14 and the base 13. The filter space is provided with filter screen 11. The end of the filter frame 14 away from the base 13 has a first port 103, which passes through the filter frame 14 and communicates with the filtration space.

[0028] like Figure 1-3As shown, the one-way valve assembly 1 includes a base 13. One end of the base 13 extends into the interior of the solenoid valve assembly 2 and is fixed to the solenoid valve assembly 2 by an interference fit. A second radial hole 104 is provided between the base 13 and the solenoid valve assembly 2. A first channel 101 and a second channel 102 are provided on the base 13. The end of the base 13 away from the solenoid valve assembly 2 also has a mounting cavity. The mounting cavity can communicate with the interior of the solenoid valve assembly 2 through the first channel 101 and also communicate with the second radial hole 104 through the second channel 102. A filter screen frame 14 is fixed in the mounting cavity by an interference fit. The filter screen frame 14 is a hollow structure. A first port 103 is provided at the end of the filter screen frame 14 away from the base 13, and a filtration space is provided at the end closer to the base 13. The filter screen frame 14 is made of plastic injection molding. During the injection molding process, the filter screen 11 is injection molded together with the filter screen frame 14 by a pre-embedding process to form an integral structure.

[0029] In a preferred embodiment, The first channel 101 is opened along the axis of the base 13, and the second channel 102 is opened on one side of the first channel 101; The filter frame 14 is also provided with a support member 15, which is fixed to the filter sheet 11. The support member 15 divides the filter sheet 11 and the filtration space into two equal parts, one of which is a part of the filter sheet 11 corresponding to the second channel 102.

[0030] like Figure 3-5 As shown, the first channel 101 is opened along the axial direction of the base 13 in the middle of the base 13, and the second channel 102 is located on one side of the first channel 101; the support member 15 is a sheet structure, integrally formed with the filter screen frame 14 along the axial direction of the filter screen frame 14. The support member 15 is also fixed to the filter screen 11 by injection molding. The support member 15 divides the circular filter screen 11 into two semi-circular parts, one of which is set corresponding to the second channel 102. Thus, when the filter screen 11 is deformed by liquid pressure, the top of the protruding filter screen 11 is directly facing the steel ball 12 and the second channel 102, ensuring that the steel ball 12 is pressed against one end of the second channel 102 and the second channel 102 is closed.

[0031] Furthermore, the area of ​​each filter screen 11 is greater than the cross-sectional area of ​​each filtration space along the radial direction of the filter screen skeleton 14, thereby enabling the filter screen 11 to bulge to one side and push the steel ball under the action of liquid pressure.

[0032] In a preferred embodiment, the filter frame 14 is provided with a first limiting structure 141, which is used to limit the filter sheet 11 and the steel ball 12.

[0033] like Figure 2 and Figure 5As shown, the filter mesh frame 14 has a second conical cavity, a filtration space, and a first port 103 connected in sequence. The inner diameter of the filtration space is larger than that of the first port 103, forming a stepped structure on the inner wall of the filter mesh frame 14, namely the first limiting structure 141 mentioned above. The filter mesh 11 is disposed in the filtration space, and the support member 15 is disposed in both the first port 103 and the filtration space. When the liquid flows from the first radial hole 201 and the second radial hole 104 to the first port 103, the filter mesh 11 protrudes towards the first port 103, and the steel ball 12 moves towards the first port 103. The first limiting structure 141 is located in the direction of movement of the filter mesh 11 and the steel ball 12 to limit the stroke of the steel ball 12. The flow area of ​​the second channel 102 is:

[0034] Where A is the flow area of ​​the second channel, h is the stroke of the steel ball, r is the radius of the steel ball, and φ is the angle of the port slope of the second conical cavity. As can be seen from the above formula, when the radius of the steel ball 12 and the angle of the port slope of the second conical cavity do not change, the larger the stroke of the steel ball 12, the larger the flow area of ​​the second channel 102. However, the increased stroke of the steel ball 12 will also lead to an increase in the opening / closing time of the one-way valve assembly 1. Therefore, by setting the first limiting structure 141 to limit the stroke of the steel ball 12, the steel ball 12 in this embodiment has the same stroke as in the traditional one-way valve structure. Under the premise of ensuring that the flow area of ​​the one-way valve assembly 1 is not affected, the opening / closing time of the one-way valve assembly 1 is avoided due to the excessive stroke of the steel ball 12, and the steel ball 12 can quickly respond to close the second channel 102 within a reasonable stroke.

[0035] In a preferred embodiment, the distance between the first limiting structure 141 and the end face of the second channel 102 near the first limiting structure 141 is less than the diameter of the steel ball 12.

[0036] like Figure 2 As shown, by making the distance between the first limiting structure 141 and the port of the second channel 102 smaller than the diameter of the steel ball 12, it is ensured that the steel ball 12 can move freely between the filter screen 11 and the end face of the second channel 102 near the first limiting structure 141, while preventing the steel ball 12 from detaching from the two.

[0037] In a preferred embodiment, the solenoid valve assembly 2 includes: Valve body 21, one end of valve body 21 is fitted with magnetic shielding tube 25, and multiple first radial holes 201 are opened on valve body 21; Valve seat 22 is tightly fitted inside valve body 21 and fixed with one-way valve assembly 1. Valve seat 22 is provided with valve port 202, which is used to connect the first channel 101 and multiple first radial holes 201. The valve core mechanism is located on the valve body 21 and is used to control the opening and closing of the valve port 202 under the action of electromagnetic force.

[0038] like Figure 2 and Figure 3 As shown, the valve body 21, the magnetic shielding tube 25, and the valve seat 22 are all hollow structures. The open end of the magnetic shielding tube 25 is sleeved and fixed to one end of the valve body 21. The valve seat 22 is fixed inside the valve body 21 by an interference fit and is located at the end of the valve body 21 away from the magnetic shielding tube 25. The base 13 is also fixed to the valve seat 22 by an interference fit, thereby assembling and fixing the solenoid valve assembly 2 and the one-way valve assembly 1. The valve seat 22 has a valve port 202. The valve body 21 has multiple first radial holes 201 on the side of the valve port 202 away from the first channel 101. The multiple first radial holes 201 are evenly distributed around the axis of the valve body 21. The valve core mechanism is located in the internal space formed by the valve body 21 and the magnetic shielding tube 25. The valve body 21 and the magnetic shielding tube 25 are both sleeved with a coil. By controlling the coil to be energized / de-energized, the valve core mechanism moves along the axis of the valve body 21 under the action of the magnetic field generated by the coil, thereby controlling the opening and closing of the valve port 202.

[0039] In a preferred embodiment, the valve body 21 is provided with a second limiting structure, and the valve core 24 mechanism includes: Moving iron 23 is disposed inside magnetic shielding tube 25; Valve core 24 is located at one end of moving iron 23 near valve port 202, and elastic element 26 is provided between valve core 24 and second limiting structure.

[0040] like Figure 2 and Figure 3 As shown, the moving iron 23 is disposed inside the magnetic shielding tube 25 and can move axially along the valve body 21. A valve core 24 is fixed on the moving iron 23. The valve core 24 is approximately cylindrical in structure, extending from one end of the valve body 21 into the interior of the valve body 21. The inner wall of the valve body 21 also has an annular protrusion, which is the aforementioned second limiting structure. The elastic element 26 adopts a spring as used in the prior art. The elastic element 26 is sleeved on the valve core 24. The free end of the valve core 24 passes through the center of the second limiting structure, so that one end of the elastic element 26 abuts against the second limiting structure, thereby making the valve core 24 and the second limiting structure... The components are elastically connected; in the initial state, the coil is not energized, the valve port 202 is open, and the first channel 101 connects to multiple first radial holes 201 through the valve port 202; when the coil is energized, the moving iron 23 is subjected to an electromagnetic force towards the valve port 202, which pushes the valve core 24 to compress the elastic element 26, so that the valve core 24 abuts against the valve port 202 and closes the valve port 202; when the coil is de-energized, the electromagnetic force disappears, and the valve core 24 moves away from the valve port 202 under the action of the elastic element 26, separates from the valve port 202, and then the valve port 202 opens.

[0041] In a preferred embodiment, the second channel 102 has a first conical cavity at one end near the filter screen 11, and the steel ball 12 is used to fit tightly with the first conical cavity to seal the second channel 102.

[0042] like Figure 1-3 As shown, the diameter of the first conical cavity gradually decreases from the side closer to the steel ball 12 to the side farther away from the steel ball 12. The steel ball 12 can enter the first conical cavity under the action of the filter screen 11 and the liquid, and fit tightly with the conical surface of the first conical cavity, thereby sealing the second channel 102.

[0043] Working principle: Initially, the solenoid valve assembly 2 is not energized, the valve port 202 is open, and the first port 103 is connected to the first radial hole 201 through the first channel 101 and the valve port 202. When the liquid flows from the first port 103 to the first radial hole 201 and the second radial hole 104, the filter screen 11 bulges towards the steel ball 12 under the action of liquid pressure, and pushes the steel ball 12 towards the second channel 102 until the steel ball 12 abuts against the end face of the second conical cavity, closing the second channel 102. At this moment, the liquid enters from the first port 103 and passes through the first channel. After passing through valve 202, the liquid flows out through the first radial hole 201. When the liquid flows from the first radial hole 201 and the second radial hole 104 to the first port 103, the filter screen 11 protrudes towards the first port 103, and the steel ball 12 moves towards the first port 103 until the filter screen 11 and the steel ball 12 abut against the first limiting structure 141 together. The second channel 102 opens, and the liquid enters through the first radial hole 201 and the second radial hole 104. After passing through the first channel 101 and the second channel 102 respectively, the liquid flows out through the first port 103.

[0044] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A pressure boosting valve that utilizes a filter screen to assist in the repositioning of a steel ball, characterized in that, include: Solenoid valve assembly (2), wherein a first radial hole (201) is provided on the solenoid valve assembly (2); A one-way valve assembly (1) is disposed at one end of the solenoid valve assembly (2). The one-way valve assembly (1) has a first channel (101) and a second channel (102). A second radial hole (104) is provided between the one-way valve assembly (1) and the solenoid valve assembly (2), and a first port (103) is provided at the end away from the solenoid valve assembly (2). The first channel (101) is used to connect the first radial hole (201) and the first port (103). The second channel (102) is used to connect the second radial hole (104) and the first port (103). A filter screen (11) is provided between the first port (103) and the second channel (102). A steel ball (12) is also provided between the filter screen (11) and the second channel (102). When liquid flows from the first port (103) to the first radial hole (201) and the second radial hole (104), the filter screen (11) bulges towards the steel ball (12) under the action of liquid pressure, and pushes the steel ball (12) towards the second channel (102); when liquid flows from the first radial hole (201) and the second radial hole (104) to the first port (103), the filter screen (11) bulges towards the first port (103), and the steel ball (12) moves towards the first port (103).

2. The pressure boosting valve according to claim 1, which utilizes a filter screen to assist in the repositioning of a steel ball, is characterized in that... The one-way valve assembly (1) further includes: The base (13) is located at one end of the solenoid valve assembly (2). The base (13) has a first channel (101) and a second channel (102). The end of the base (13) away from the solenoid valve assembly (2) has a mounting cavity. A filter frame (14) is fitted tightly into the mounting cavity. A filtration space is formed between the filter frame (14) and the base (13). The filter sheet (11) is provided in the filtration space. The filter frame (14) has a first port (103) at one end away from the base (13). The first port (103) passes through the filter frame (14) and communicates with the filtration space.

3. A pressure boosting valve using a filter screen to assist in the repositioning of a steel ball according to claim 2, characterized in that, The first channel (101) is opened along the axis of the base (13), and the second channel (102) is opened on one side of the first channel (101); The filter frame (14) is also provided with a support (15), which is fixed to the filter sheet (11). The support (15) divides the filter sheet (11) and the filter space into two equal parts, one of which is the filter sheet (11) corresponding to the second channel (102).

4. A pressure boosting valve using a filter screen to assist in the repositioning of a steel ball according to claim 2, characterized in that, The filter mesh frame (14) is provided with a first limiting structure (141), which corresponds to the filter mesh (11) and the steel ball (12) along the axial direction of the first channel (101) and is used to limit the stroke of the steel ball (12).

5. A pressure boosting valve using a filter screen to assist in the repositioning of a steel ball according to claim 4, characterized in that, The distance between the first limiting structure (141) and the end face of the second channel (102) near the first limiting structure (141) is less than the diameter of the steel ball (12).

6. A pressure boosting valve using a filter screen to assist in the repositioning of a steel ball according to claim 3, characterized in that, The area of ​​each filter element (11) is greater than the cross-sectional area of ​​the filter space along the radial direction of the filter skeleton (14).

7. A pressure boosting valve using a filter screen to assist in the repositioning of a steel ball according to claim 1, characterized in that, The solenoid valve assembly (2) includes: A valve body (21) is provided with a magnetic shielding tube (25) at one end of the valve body (21), and a plurality of first radial holes (201) are provided on the valve body (21). Valve seat (22), which is tightly fitted inside the valve body (21) and fixed to the one-way valve assembly (1), and a valve port (202) is provided on the valve seat (22), which is used to connect the first channel (101) and a plurality of first radial holes (201). A valve core mechanism is provided on the valve body (21) and is used to control the opening and closing of the valve port (202) under the action of electromagnetic force.

8. A pressure boosting valve using a filter screen to assist in the repositioning of a steel ball according to claim 7, characterized in that, The valve body (21) is provided with a second limiting structure, and the valve core mechanism includes: Moving iron (23), the moving iron (23) is disposed inside the magnetic shielding tube (25); Valve core (24), the valve core (24) is located at one end of the moving iron (23) near the valve port (202), and an elastic element (26) is provided between the valve core (24) and the second limiting structure.

9. A pressure boosting valve using a filter screen to assist in the repositioning of a steel ball according to claim 1, characterized in that, The second channel (102) has a first conical cavity at one end near the filter screen (11), and the steel ball (12) is used to fit tightly with the first conical cavity to close the second channel (102).

Images