Pressure valve capable of adjusting and replacing steel ball

Abstract

The utility model provides a pressure valve with adjustable and replaceable steel balls, and belongs to the technical field of electromagnetic valves. The adjusting channel penetrating through the two ends of the ejector pin is arranged in the ejector pin, the adjusting rod is in threaded connection with the interior of the adjusting channel, and one end of the adjusting rod extends towards the ejector ball and selectively makes contact with the ejector ball, so that the ejector ball can be adjusted when indentation or abrasion occurs on the surface of the ejector ball after the pressure valve is used for a long time. The position of the adjusting rod in the adjusting channel of the ejector pin can be adjusted by rotating the adjusting rod, so that the distance between the end part of the adjusting rod and the ejector bead is adjusted, a gap between the ejector bead and a throttling surface caused by surface indentation or abrasion of the ejector bead is effectively compensated, the sealing performance is ensured, and meanwhile, the service life of the ejector pin is prolonged. And when the balls are too many in indentation or too large in abrasion, the top balls can be directly taken out from the adjusting channel after the adjusting rod is taken out for replacement, the pressure valve does not need to be wholly replaced, and the use cost is lower.

Description

Technical Field

[0001] This utility model relates to the technical field of solenoid valves, specifically to a pressure valve with adjustable and replaceable steel balls. Background Technology

[0002] As a type of battery pressure valve, the proportional electromagnetic pressure valve uses a coil assembly to drive the moving iron core assembly, which in turn moves the push rod. The opening and closing of the valve passage and the adjustment of the opening size are achieved by the cooperation between one end of the push rod and the throttling surface of the valve seat, thereby meeting the requirements for flow on / off and flow rate adjustment. It is often used in the fuel supply lines of engines.

[0003] Currently, existing pressure valves on the market, such as the oil rail pressure control valve disclosed in patent CN222479605U, have a pin slidably mounted coaxially on a stationary iron core. The valve seat has a flow channel that matches the pin, and a throttling surface is provided in the flow channel. One end of the pin extends into the flow channel and cooperates with the throttling surface when the pin moves. In addition, a moving iron core is fixedly connected to one end of the pin. At the same time, a coil assembly is sleeved on the outside of the pin and corresponds to the moving iron core. Furthermore, a spring is provided at the end of the pin away from the throttling surface. When the coil assembly is energized, the moving iron core moves towards the spring end under the action of the magnetic field generated by the coil assembly, moving away from the throttling surface and compressing the spring. When the current in the coil assembly weakens or disappears, the pin moves towards the throttling surface under the action of the spring, realizing the opening and closing control of the flow channel and the adjustment of the flow cross-section size to meet different flow control requirements. In addition, a ball bearing is provided between the throttling surface of the flow channel and the end of the ejector pin. While forming a one-way valve to ensure unidirectional flow, a line seal is also formed between the ball bearing and the throttling surface, improving the sealing effect and response speed, and ensuring the performance of the pressure valve. Although the above pressure valve can meet the requirements of flow on / off and flow rate regulation, the ejector pin repeatedly presses the ball bearing against the throttling surface. After long-term use, the surface of the ball bearing is prone to indentation and wear. Furthermore, the stroke of the ejector pin is limited by the size of the moving iron core's movement space. As a result, after long-term use, the sealing between the ball bearing and the throttling surface deteriorates, affecting the overall performance of the pressure valve. This necessitates the replacement of the entire pressure valve, leading to a shortened overall lifespan and increased operating costs. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, the present invention aims to provide an adjustable and replaceable steel ball pressure valve. An adjustment channel is provided within the ejector pin, extending through both ends. An adjustment rod is installed within the adjustment channel, and the adjustment rod is threadedly connected to the adjustment channel. Furthermore, one end of the adjustment rod extends to the ejector ball and selectively contacts the ejector ball. This allows the gap between the ejector pin end and the ejector ball to be reduced by turning the adjustment rod when the ejector ball has indentations or wear, thereby compensating for the sealing gap problem caused by indentations or wear on the ejector ball. In cases of significant indentations or wear, the adjustment rod can be directly pulled out, and the ejector ball can be removed and replaced through the adjustment channel. This extends the overall service life of the pressure valve, eliminating the need to replace the entire pressure valve when vulnerable parts are damaged, thus reducing operating costs.

[0005] The specific technical solution is as follows:

[0006] An adjustable and replaceable ball pressure valve includes a valve seat, a stationary iron core assembly, a moving iron core, a gland, a top cover with a pin assembly, a spring, a ejector pin, and a ball. One end of the valve seat is fixedly connected to the stationary iron core assembly. A flow channel with a throttling surface is formed inside the valve seat. A sliding channel coaxially arranged with the flow channel is formed in the stationary iron core assembly. One end of the ejector pin is slidably disposed within the sliding channel and extends to the throttling surface. A moving iron core is located at the end of the stationary iron core assembly opposite to the valve seat and connected to the other end of the ejector pin. The gland is located at the end of the stationary iron core assembly opposite to the valve seat and covers the moving iron core. The top cover with a pin assembly is installed at the end of the stationary iron core assembly opposite to the valve seat and covers the gland. The top cover of the component is electrically connected to the coil assembly inside the stationary iron core assembly. A top ball is provided in the flow channel and between the throttling surface and the end of the ejector pin. It also includes an adjusting rod. An adjusting channel is provided on the ejector pin along its axial direction, passing through both ends of the ejector pin. The adjusting rod passes through the adjusting channel and is threadedly connected to the adjusting channel. One end of the adjusting rod extends to the top ball and selectively contacts the top ball.

[0007] The aforementioned adjustable and replaceable steel ball pressure valve includes an adjusting end, a connecting end, and a pressing end. The connecting end has an adjusting end and a pressing end at its two ends, respectively. The adjusting end is threadedly connected to the adjusting channel, and the pressing end selectively contacts the top ball.

[0008] In the aforementioned pressure valve with adjustable and replaceable steel balls, the cross-section of the connecting end is smaller than the cross-section of the adjusting channel.

[0009] In the aforementioned adjustable and replaceable steel ball pressure valve, a sealing ring is provided between the pressure-rejecting end and the inner wall of the adjustment channel.

[0010] In the aforementioned adjustable and replaceable steel ball pressure valve, an internal hexagonal hole is provided on the end face of the adjusting end opposite to the connecting end.

[0011] In the aforementioned adjustable and replaceable steel ball pressure valve, the gland and the stationary iron core assembly are riveted together, and the upper cover with the pin assembly is threaded together with the stationary iron core assembly.

[0012] In the aforementioned pressure valve with adjustable and replaceable steel balls, a spherical cavity is provided on the end face of the adjusting rod near the top ball, and when the adjusting rod presses against the top ball, one side of the top ball is embedded in the spherical cavity.

[0013] In the aforementioned adjustable and replaceable steel ball pressure valve, an adjustment hole is provided on the gland and at the position directly opposite the axial direction of the ejector pin. A sealing plug and a pressure head are provided in the adjustment hole. The sealing plug is installed in the adjustment hole, and the pressure head presses against the sealing plug.

[0014] In the aforementioned adjustable and replaceable steel ball pressure valve, the opening edge of the adjusting hole near the ejector pin extends into the hole to form a constriction, and the outer edge of the sealing plug away from the pressure head has a contact surface that abuts against the constriction.

[0015] In the aforementioned adjustable and replaceable steel ball pressure valve, the pressure head and the sealing plug are connected by a thread, and the pressure head is an internal hexagonal pressure head.

[0016] In the aforementioned adjustable and replaceable steel ball pressure valve, a magnetic element is embedded in the end of the sealing plug near the pressure head.

[0017] The positive effects of the above technical solution are:

[0018] The aforementioned adjustable and replaceable ball pressure valve features an adjustment channel extending through both ends of the ejector pin. An adjustment rod is threaded into this channel, with one end selectively contacting the ball. Rotating the rod adjusts its position within the ejector pin, thereby adjusting the distance between the rod's end and the ball. This allows for the reduction of gaps between the ball and the throttling surface when indentations or wear appear on the ball after prolonged use. This ensures a tight seal. Furthermore, if excessive indentations or wear occur, the ball can be easily removed from the adjustment channel for replacement by pulling out the adjustment rod. This simplifies operation, eliminates the need for complete valve replacement, and reduces operating costs. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an embodiment of the adjustable and replaceable steel ball pressure valve of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of section A;

[0021] Figure 3 This is a structural diagram of the ejector pin according to a preferred embodiment of the present invention;

[0022] Figure 4 This is a structural diagram of the adjusting rod according to a preferred embodiment of the present invention.

[0023] In the attached diagram: 1. Valve seat; 11. Flow channel; 111. Throttling surface; 2. Stationary iron core assembly; 21. Sliding channel; 22. Coil assembly; 3. Moving iron core; 4. Pressure cap; 41. Adjustment hole; 42. Sealing plug; 43. Pressure head; 421. Contact surface; 422. Magnetic suction element; 5. Top cover with pin assembly; 6. Spring; 7. Ejector pin; 71. Adjustment channel; 8. Ejector ball; 9. Adjustment rod; 91. Adjustment end; 92. Connection end; 93. Pressing end; 911. Internal hexagonal hole; 931. Sealing ring; 932. Spherical cavity. Detailed Implementation

[0024] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 4 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.

[0025] Figure 1 This is a structural diagram of an embodiment of the adjustable and replaceable steel ball pressure valve of the present invention; Figure 2 for Figure 1 An enlarged view of part A in the image. (See image below.) Figure 1 and Figure 2 As shown, the adjustable and replaceable steel ball pressure valve provided in this embodiment includes: valve seat 1, stationary iron core assembly 2, moving iron core 3, pressure cap 4, upper cover with pin assembly 5, spring 6, ejector pin 7, ejector ball 8, and adjusting rod 9.

[0026] Specifically, one end of the valve seat 1 is fixedly connected to the stationary iron core assembly 2. At this time, a flow channel 11 with a throttling surface 111 is opened in the valve seat 1. Preferably, the throttling surface 111 is a conical surface, that is, the part of the flow channel 11 with the throttling surface 111 is arranged in a funnel shape, realizing the change of the cross-section of the flow channel 11 at the throttling surface 111, thereby facilitating the subsequent opening and closing control of the flow rate and the adjustment of the flow rate. At the same time, a sliding channel 21 coaxially arranged with the flow channel 11 is opened in the stationary iron core assembly 2, and one end of the ejector pin 7 is slidably set in the sliding channel 21 and extends to the throttling surface 111, so that the ejector pin 7 can move relative to the stationary iron core assembly 2, providing conditions for the ejector pin 7 to push the ejector ball 8. Additionally, a moving iron core 3 is provided at the end of the stationary iron core assembly 2 facing away from the valve seat 1. The moving iron core 3 is connected to the other end of the ejector pin 7, so that when the stationary iron core assembly 2 is energized, the magnetic field generated by the stationary iron core assembly 2 can drive the moving iron core 3 to move, thereby realizing the movement of the ejector pin 7 to achieve flow opening and closing control and flow rate adjustment. Furthermore, a pressure cap 4 is placed at the end of the stationary iron core assembly 2 facing away from the valve seat 1 and covers the moving iron core 3, sealing the end of the stationary iron core assembly 2 facing away from the valve seat 1 by the pressure cap 4 to prevent flow leakage. In addition, an upper cover 5 with a pin component is installed at the end of the stationary iron core assembly 2 facing away from the valve seat 1 and covers the pressure cap 4. The upper cover with the pin component is electrically connected to the coil assembly 22 inside the stationary iron core assembly 2, so that during installation and wiring, quick plugging and unplugging can be achieved through the pin component on the upper cover, making disassembly and installation more convenient and facilitating subsequent maintenance and replacement. In addition, a top bead 8 is provided inside the flow channel 11 and between the throttling surface 111 and the end of the ejector pin 7, so that the end of the ejector pin 7 can contact or separate from the throttling surface 111 through the top bead 8. While satisfying the flow on / off control and flow rate adjustment, it ensures unidirectional flow of the flow. At the same time, it can also achieve line sealing with the throttling surface 111, improve the sealing effect, enhance the response speed, and ensure the performance of the pressure valve.

[0027] Specifically, an adjustment channel 71 is provided along the axial direction of the ejector pin 7, extending through both ends, making the ejector pin 7 a hollow structure. This facilitates subsequent adjustment of the distance between the end of the ejector pin 7 and the ejector ball 8, as well as the removal and replacement of the ejector ball 8. Simultaneously, an adjustment rod 9 is inserted into the adjustment channel 71 and threadedly connected to it. This allows the adjustment rod 9 to move within the adjustment channel 71 when rotated, thereby adjusting the distance between the end of the adjustment rod 9 and the ejector ball 8. One end of the adjustment rod 9 extends to the ejector ball 8 and selectively contacts it. This ensures that if indentations or wear appear on the surface of the ejector ball 8 after prolonged use, the distance between the end of the adjustment rod 9 and the ejector ball 8 can be reduced to prevent gaps between the ejector ball 8 and the throttling surface 111, thus guaranteeing performance and extending service life. Furthermore, if the indentations or wear on the surface of the ejector ball 8 are significant, the adjustment rod 9 can be removed, allowing the ejector ball 8 to be removed from the adjustment channel 71 and replaced with a new one, eliminating the need to replace the entire pressure valve and reducing operating costs.

[0028] Figure 3 This is a structural diagram of the ejector pin according to a preferred embodiment of the present invention; Figure 4 This is a structural diagram of the adjusting rod according to a preferred embodiment of the present invention. Figures 1 to 4 As shown, the adjusting rod 9, located within the adjusting channel 71 of the ejector pin 7, includes an adjusting end 91, a connecting end 92, and a pressing end 93. The connecting end 92 has the adjusting end 91 and the pressing end 93 at its two ends, respectively. Preferably, the adjusting end 91, connecting end 92, and pressing end 93 are an integral structure, resulting in better overall integrity, higher structural strength, and easier processing. This also avoids assembly errors and gaps present in assembled structures, ensuring the accuracy of the pressure valve. Furthermore, by threading the adjusting end 91 to the adjusting channel 71 and selectively contacting the pressing end 93 with the ejector ball 8, the two ends of the adjusting rod 9 play different roles. This also avoids the high processing cost caused by requiring internal threads throughout the adjusting channel 71, reducing the amount of internal thread processing in the adjusting channel 71 and facilitating manufacturing.

[0029] More specifically, the cross-section of the connecting end 92 of the adjusting rod 9 is set to be smaller than the cross-section of the adjusting channel 71 on the ejector pin 7. This allows the connecting end 92 to connect the adjusting end 91 and the pressing end 93 while avoiding contact between the connecting end 92 and the inner wall of the adjusting channel 71, reducing material usage and avoiding resource waste. At the same time, it also reduces contact between the adjusting rod 9 and the adjusting channel 71, making it easier and less strenuous to rotate the adjusting rod 9 later.

[0030] More specifically, a sealing ring 931 is provided between the pressing end 93 of the adjusting rod 9 and the inner wall of the adjusting channel 71 of the ejector pin 7. The sealing ring 931 achieves a seal between the pressing end 93 and the adjusting channel 71, preventing some oil from leaking into the adjusting channel 71 of the adjusting rod 9. This prevents the oil leaking into the adjusting channel 71 when the ejector pin 7 moves, thus preventing the noise caused by the movement of the oil. At the same time, the sealing ring 931 can also fill the assembly gap between the pressing end 93 and the adjusting channel 71, improving the stability and reliability of the adjusting rod 9 after assembly, thereby ensuring the control accuracy of the pressure valve.

[0031] More specifically, an internal hexagonal hole 911 is provided on the end face of the adjusting end 91 that is away from the connecting end 92, so that an internal hexagonal structure can be formed on the end face of the adjusting end 91. This can ensure that the end face of the adjusting end 91 is flat, avoid interfering with the normal movement of the ejector pin 7, and can also be adjusted with an internal hexagonal wrench, making the operation more convenient.

[0032] More specifically, the pressure cap 4 and the stationary iron core assembly 2 are connected by a riveting connection, meaning the pressure cap 4 is riveted to one end of the stationary iron core assembly 2. This achieves a tight fit between the pressure cap 4 and the stationary iron core assembly 2, improving the connection strength and reliability, preventing leakage, and ensuring the stability of the overall structure. Furthermore, the upper cover 5 with the pin assembly is threadedly connected to the stationary iron core assembly 2, facilitating the installation and removal of the upper cover 5 with the pin assembly on the stationary iron core assembly 2, thereby simplifying wiring to the coil assembly 22 inside the stationary iron core assembly 2. Moreover, since the pin assembly is prone to damage due to subsequent insertion and removal, threading the upper cover 5 with the pin assembly to the stationary iron core assembly 2 facilitates replacement after damage, reducing operating costs.

[0033] More specifically, a spherical cavity 932 is provided on the end face of the adjusting rod 9 near the top ball 8. The spherical cavity 932 forms a limiting space on the end face of the pressing end 93 of the adjusting rod 9. When the adjusting rod 9 presses against the top ball 8, one side of the top ball 8 is embedded in the spherical cavity 932. The spherical groove allows for automatic centering when the adjusting rod 9 presses against the top ball 8, through the mutual cooperation between the spherical groove and the spherical surface of the top ball 8. This prevents the top ball 8 from shifting at the throttling surface 111 of the flow channel 11 under the impact of the oil, ensuring a more stable flow rate.

[0034] More specifically, an adjustment hole 41 is provided on the pressure cap 4 at a position directly opposite the axial direction of the ejector pin 7. This allows operators to easily adjust the adjustment rod 9 or replace the ejector ball 8 by opening the adjustment hole 41. Simultaneously, a sealing plug 42 and a pressure head 43 are provided in the adjustment hole 41. The sealing plug 42 is installed inside the adjustment hole 41, and the pressure head 43 is pressed against the sealing plug 42. The pressure head 43 stably confines the sealing plug 42 within the adjustment hole 41, thus sealing the adjustment hole 41. This maintains the sealing performance of the pressure cap 4 when no adjustment or maintenance is required, preventing oil leakage and improving safety.

[0035] More specifically, the opening edge of the adjustment hole 41 near the ejector pin 7 extends into the hole to form a constriction, which restricts the sealing plug 42. At the same time, a contact surface 421 is provided on the outer edge of the end of the sealing plug 42 away from the pressure head 43, which abuts against the constriction. Preferably, both the inner wall of the constriction and the contact surface 421 are inclined, so that the contact area between the constriction and the contact surface 421 is larger. This makes the opening of the adjustment hole 41 more effective in restricting the sealing plug 42, and more reliable. It also prevents the sealing plug 42 from accidentally falling off and entering the space where the ejector pin 7 and the moving iron core 3 move. The structural design is more reasonable.

[0036] More specifically, the pressure head 43 and the sealing plug 42 are connected by a thread, and preferably the pressure head 43 is an internal hexagonal pressure head 43, which can facilitate the disassembly and assembly of the pressure head 43, and maintain the flatness of the surface of the pressure cap 4, which is convenient for the installation of the top cover 5 with the pin assembly.

[0037] More specifically, a magnetic element 422 is embedded in the end of the sealing plug 42 near the pressure head 43. Preferably, the magnetic element 422 can be a magnet or a metal part that can be attracted by a magnet. This makes it convenient for the operator to remove the sealing plug 42 from the adjustment hole 41 when the pressure head 43 is removed and the sealing plug 42 needs to be removed. The magnetic attraction between the magnet and the magnetic element 422 makes it easier to remove the sealing plug 42 from the adjustment hole 41, avoiding the problem of difficulty in removing the sealing plug 42 from the small adjustment hole 41, and making the operation more convenient.

[0038] The adjustable and replaceable ball pressure valve provided in this embodiment includes a valve seat 1, a stationary iron core assembly 2, a moving iron core 3, a pressure cap 4, an upper cover 5 with a pin assembly 5, a spring 6, a ejector pin 7, a ball 8, and an adjusting rod 9. An adjusting channel 71 is provided in the ejector pin 7, penetrating both ends, and an adjusting rod 9 is threaded into the adjusting channel 71. One end of the adjusting rod 9 extends towards the ball 8 and selectively contacts it. This allows the position of the adjusting rod 9 within the adjusting channel 71 of the ejector pin 7 to be adjusted when indentations or wear appear on the surface of the ball 8 after prolonged use. This adjusts the distance between the end of the adjusting rod 9 and the ball 8, effectively compensating for the gap between the ball 8 and the throttling surface 111 caused by indentations or wear, ensuring a tight seal. Furthermore, when there are excessive indentations or wear on the ball, the adjusting rod 9 can be removed, and the ball 8 can be directly removed from the adjusting channel 71 for replacement, eliminating the need to replace the entire pressure valve and reducing operating costs.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure valve with adjustable and replaceable steel balls, comprising a valve seat, a stationary iron core assembly, a moving iron core, a pressure cap, a top cover with a pin assembly, a spring, a pin, and a pin ball, wherein one end of the valve seat is fixedly connected to the stationary iron core assembly, the valve seat has a flow channel with a throttling surface, the stationary iron core assembly has a sliding channel arranged coaxially with the flow channel, one end of the pin is slidably disposed in the sliding channel and extends to the throttling surface, the moving iron core is disposed at the end of the stationary iron core assembly opposite to the valve seat and connected to the other end of the pin, the pressure cap is disposed at the end of the stationary iron core assembly opposite to the valve seat and covers the moving iron core, the top cover with a pin assembly is installed at the end of the stationary iron core assembly opposite to the valve seat and covers the pressure cap, and the top cover with a pin assembly is electrically connected to a coil assembly in the stationary iron core assembly, and the pin ball is disposed in the flow channel and between the throttling surface and the end of the pin, characterized in that... Also includes: Adjusting rod; The ejector pin has an adjustment channel extending through both ends along its axial direction. The adjustment rod passes through the adjustment channel and is threadedly connected to the adjustment channel. One end of the adjustment rod extends to the ejector ball and selectively contacts the ejector ball.

2. The adjustable and replaceable steel ball pressure valve according to claim 1, characterized in that, The adjusting rod includes an adjusting end, a connecting end, and a pressing end. The two ends of the connecting end are respectively provided with an adjusting end and a pressing end. The adjusting end is threadedly connected to the adjusting channel, and the pressing end is selectively in contact with the top ball.

3. The adjustable and replaceable steel ball pressure valve according to claim 2, characterized in that, The cross-section of the connecting end is smaller than the cross-section of the adjustment channel.

4. The adjustable and replaceable steel ball pressure valve according to claim 2, characterized in that, A sealing ring is provided between the pressure end and the inner wall of the adjustment channel.

5. The adjustable and replaceable steel ball pressure valve according to claim 2, characterized in that, An internal hexagonal hole is provided on the end face of the adjustment end opposite to the connection end.

6. The adjustable and replaceable steel ball pressure valve according to claim 1, characterized in that, The pressure cap and the stationary iron core assembly are connected by riveting, and the upper cover with the pin assembly is connected to the stationary iron core assembly by thread.

7. The adjustable and replaceable steel ball pressure valve according to claim 1, characterized in that, A spherical cavity is formed on the end face of the adjusting rod near the top bead, and when the adjusting rod presses against the top bead, one side of the top bead is embedded in the spherical cavity.

8. The adjustable and replaceable steel ball pressure valve according to claim 1, characterized in that, An adjustment hole is provided on the pressure cap at a position directly opposite the axial direction of the ejector pin. A sealing plug and a pressure head are provided in the adjustment hole. The sealing plug is installed in the adjustment hole, and the pressure head presses against the sealing plug.

9. The adjustable and replaceable steel ball pressure valve according to claim 8, characterized in that, The opening of the adjustment hole near the end of the ejector pin extends into the hole to form a constriction. The outer edge of the sealing plug away from the pressure head has a contact surface that abuts against the constriction.

10. The adjustable and replaceable steel ball pressure valve according to claim 8, characterized in that, A magnetic element is embedded in the end of the sealing plug near the pressure head.

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