Threaded plug-in hydraulic control one-way valve

Abstract

The utility model discloses a threaded plug-in mounting type hydraulic control one-way valve, and relates to the field of valves, the threaded plug-in mounting type hydraulic control one-way valve comprises a valve body, a valve element is slidably connected in the valve body, a spring is arranged between the valve element and the valve body, a plurality of first communicating holes distributed circumferentially are formed in the valve body, a plurality of second communicating holes distributed circumferentially are formed in the valve body, and the first communicating holes are communicated with the second communicating holes. The end, away from the valve element, of the valve body is slidably connected with a control piston, a limiting ring is fixed to the end, close to the control piston, of the valve body, and a filtering mechanism is arranged between the valve element and the control piston. When the hydraulic oil moves back and forth in the first communicating hole and the second communicating hole, the hydraulic oil can make contact with one side of the control piston, and when the hydraulic oil makes contact with the control piston, the filtering mechanism filters impurities contained in the hydraulic oil, so that the situation that the impurities in the hydraulic oil make contact with the control piston can be reduced; and the normal movement of the control piston is influenced.

Description

Technical Field

[0001] This application relates to the field of valves, and in particular to a threaded cartridge-type hydraulic control check valve. Background Technology

[0002] A hydraulic check valve consists of a valve body, valve core, spring, sealing ring, hydraulic piston, etc. The valve body is usually made of cast iron or cast steel, the valve core is made of copper, aluminum, etc., the spring is usually made of elastic steel, and the sealing ring is made of rubber or polyurethane, etc.

[0003] The working principle of a hydraulic check valve is to use the movement of the valve core to control the unidirectional flow of hydraulic oil. When hydraulic oil enters from the valve body inlet, the valve core will be pressured by the hydraulic oil and move upward, connecting the inlet channel and the outlet channel, thus allowing the hydraulic oil to flow out smoothly. When hydraulic oil flows in from the outlet in the opposite direction, the valve core will be pressured in the opposite direction and move downward, disconnecting the inlet channel and the outlet channel, thus preventing the backflow of hydraulic oil. When pressure relief is required, the control hydraulic oil pushes the hydraulic piston, which lifts the valve core, allowing the hydraulic oil to flow back.

[0004] In daily use, hydraulic oil may contain impurities. When these impurities flow through the valve body, they may come into contact with the hydraulic piston. If the impurities adhere directly to the edge of the hydraulic piston, they may affect the normal movement of the hydraulic piston in the valve body. Utility Model Content

[0005] The purpose of this application is to address the problem mentioned in the background art that hydraulic oil may contain impurities, which may come into contact with the hydraulic piston when flowing through the valve body, and the impurities may directly adhere to the edge of the hydraulic piston, potentially affecting the normal movement of the hydraulic piston in the valve body. This application provides a threaded cartridge hydraulic control check valve.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A threaded cartridge-type hydraulic control check valve includes a valve body, a valve core slidably connected within the valve body, a spring disposed between the valve core and the valve body, both ends of the spring being fixedly connected to the valve body and the valve core, a plurality of circumferentially distributed connecting holes I and a plurality of circumferentially distributed connecting holes II being provided on the valve body, a control piston slidably connected to the end of the valve body away from the valve core, a limit ring fixed to the end of the valve body near the control piston, and a filtering mechanism disposed between the valve core and the control piston.

[0008] By adopting the above technical solution, when the hydraulic oil moves back and forth through the connecting hole one and the connecting hole two, the hydraulic oil will come into contact with one side of the control piston. When the hydraulic oil comes into contact with the control piston, the filtering mechanism filters the impurities contained in the hydraulic oil, thereby reducing the possibility of impurities in the hydraulic oil coming into contact with the control piston and affecting the normal movement of the control piston.

[0009] Furthermore, the filtering mechanism includes a support ring fixed on the inner wall of the valve body. The support ring is located on the side of the connecting hole near the control piston. A hydraulic oil filter plate is rotatably connected to the support ring. The top end of the control piston passes through the hydraulic oil filter plate. An oil rotation assembly is provided between the hydraulic oil filter plate and the control piston.

[0010] By adopting the above technical solution, the hydraulic oil filter plate on the support ring is used to filter the hydraulic oil close to the control piston, thereby reducing the possibility of impurities in the hydraulic oil coming into contact with the control piston and affecting the normal movement of the control piston.

[0011] Furthermore, the rotating assembly includes a rotating ring fixed to the hydraulic oil filter plate, and the control piston ejection end is provided with a threaded groove, the control piston ejection end passes through the rotating ring and is threadedly connected to the rotating ring.

[0012] By adopting the above technical solution, the piston's ejector end moves within the rotating ring during movement. Driven by the threaded groove, the rotating ring causes the hydraulic oil filter plate to rotate, thus facilitating the rotation of the hydraulic oil filter plate on the support ring.

[0013] Furthermore, the hydraulic oil filter plate is made of stainless steel.

[0014] By adopting the above technical solution, the hydraulic oil filter plate is made of stainless steel, which enables the hydraulic oil filter plate to have good corrosion resistance and strength, and is suitable for high temperature and high pressure environments.

[0015] Furthermore, a scraper is provided on the support ring, and the scraper abuts against the hydraulic oil filter plate.

[0016] By adopting the above technical solution, when the hydraulic oil filter plate rotates, the scraper sticks against the surface of the hydraulic oil filter plate to scrape off the impurities attached to the surface of the hydraulic oil filter plate. This allows the impurities to flow out of the valve body with the flow of hydraulic oil, reducing the possibility of impurities adhering to the hydraulic oil filter plate.

[0017] Furthermore, a support rod is fixed on the support ring, and the support rod is slidably connected to the scraper rod.

[0018] By adopting the above technical solution, the scraper is supported by a support rod, thereby enabling the scraper to remain stable on the hydraulic oil filter plate.

[0019] Furthermore, a plurality of abutment springs are provided between the scraper rod and the support rod, and both ends of the abutment springs are fixedly connected to the scraper rod and the support rod.

[0020] By adopting the above technical solution, the scraper is pushed to move on the support rod by the contact spring, so that the scraper can always be in contact with the hydraulic oil filter plate.

[0021] Furthermore, a control oil filter plate is fixed on the limiting ring.

[0022] By adopting the above technical solution, the control oil filter plate filters out any impurities that may be present in the control oil, thereby reducing the contact between impurities in the control oil and the control piston, and further reducing the possibility of affecting the normal movement of the control piston.

[0023] In summary, this application includes at least one of the following beneficial effects;

[0024] 1. In this application, during the reciprocating movement of hydraulic oil through connecting holes one and two, when the hydraulic oil contacts the control piston, a hydraulic oil filter plate on the support ring filters impurities in the hydraulic oil. When the control piston moves, the top end of the control piston moves on a rotating ring, which rotates under the action of the threaded groove. The rotating ring drives the hydraulic oil filter plate to rotate under the support of the support ring. When the hydraulic oil filter plate rotates, a scraper scrapes off the impurities on the hydraulic oil filter plate, allowing the impurities to move with the hydraulic oil, reducing the amount of impurities deposited on the hydraulic oil filter plate. This achieves the purpose of reducing the possibility of impurities directly contacting the control piston and reducing the possibility of impurities entering between the control piston and the valve body, thus affecting the normal movement of the control piston.

[0025] 2. In this application, the scraper bar is moved toward the hydraulic oil filter plate by the push of the contact spring, so that the scraper bar can stably contact the hydraulic oil filter plate. Attached Figure Description

[0026] Figure 1 This is a first three-dimensional structural schematic diagram of the threaded cartridge hydraulic control check valve in this application;

[0027] Figure 2 This is a disassembled schematic diagram of the internal structure of the threaded cartridge hydraulic control check valve in this application;

[0028] Figure 3 This application Figure 2 Enlarged diagram of point A in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Valve body; 2. Valve core; 3. Spring; 4. Connecting hole one; 5. Connecting hole two; 6. Control piston; 7. Filtering mechanism; 71. Hydraulic oil filter plate; 72. Support ring; 73. Rotating assembly; 731. Rotating ring; 732. Threaded groove; 74. Scraper; 75. Support rod; 76. Contact spring; 8. Limiting ring; 9. Control oil filter plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 —3 provides further detailed description of this application.

[0032] This application discloses a threaded cartridge-type hydraulic control check valve.

[0033] Reference Figure 1 , Figure 2 and Figure 3 A threaded cartridge type hydraulic control check valve includes a valve body 1, a valve core 2 slidably connected inside the valve body 1, a spring 3 disposed between the valve core 2 and the valve body 1, both ends of the spring 3 being fixedly connected to the valve body 1 and the valve core 2, a plurality of circumferentially distributed connecting holes 4 and a plurality of circumferentially distributed connecting holes 5 being provided on the valve body 1, a control piston 6 slidably connected to the end of the valve body 1 away from the valve core 2, a limit ring 8 fixed to the end of the valve body 1 near the control piston 6, and a filter mechanism 7 disposed between the valve core 2 and the control piston 6. When using this hydraulically controlled check valve, during operation, hydraulic oil enters the valve body 1 through connecting hole 4. The hydraulic oil pushes the valve core 2, which in turn compresses the spring 3. Hydraulic oil then flows out through connecting hole 4 and exits through connecting hole 5. When the hydraulic oil stops pushing the valve core 2, the spring 3 separates the valve core 2 from both connecting holes 4 and 5, preventing backflow. To allow backflow, the control piston 6 is pushed by the hydraulic oil, moving within the valve body 1. The control piston 6 then pushes the valve core 2, compressing the spring 3, allowing hydraulic oil to flow out through connecting hole 5. The second connecting hole 5 enters the first connecting hole 4, and then the hydraulic oil drives the control piston 6 to reset. When the hydraulic oil moves back and forth between the first connecting hole 4 and the second connecting hole 5, the hydraulic oil will contact one side of the control piston 6. When the hydraulic oil contacts the control piston 6, the filter mechanism 7 filters the impurities contained in the hydraulic oil, reducing the contact between the impurities in the hydraulic oil and the control piston 6. By using the filter mechanism to filter the impurities in the hydraulic oil, the contact between the impurities in the hydraulic oil and the control piston 6 is reduced, thereby reducing the possibility of impurities in the hydraulic oil contacting the control piston 6 and affecting the normal movement of the control piston 6.

[0034] Reference Figure 1 , Figure 2 and Figure 3The filter mechanism 7 includes a support ring 72 fixed on the inner wall of the valve body 1. The support ring 72 is located on the side of the connecting hole 4 near the control piston 6. A hydraulic oil filter plate 71 is rotatably connected to the support ring 72. The top end of the control piston 6 passes through the hydraulic oil filter plate 71. An oil rotation assembly 73 is provided between the hydraulic oil filter plate 71 and the control piston 6.

[0035] In addition, the rotating assembly 73 includes a rotating ring 731 fixed on the hydraulic oil filter plate 71, and a threaded groove 732 is provided on the top end of the control piston 6. The top end of the control piston 6 passes through the rotating ring 731 and is threadedly connected to the rotating ring 731.

[0036] Furthermore, the hydraulic oil filter plate 71 is made of stainless steel.

[0037] Furthermore, a scraper 74 is provided on the support ring 72, and the scraper 74 abuts against the hydraulic oil filter plate 71.

[0038] As the hydraulic oil moves back and forth between the connecting hole 4 and the connecting hole 5, when the hydraulic oil comes into contact with the control piston 6, the hydraulic oil filter plate 71 on the support ring 72 filters impurities in the hydraulic oil. When the control piston 6 moves, the top end of the control piston 6 moves on the rotating ring 731. The rotating ring 731 rotates under the action of the threaded groove 732. The rotating ring 731 drives the hydraulic oil filter plate 71 to rotate under the support of the support ring 72. When the hydraulic oil filter plate 71 rotates, the scraper 74 scrapes off the impurities on the hydraulic oil filter plate 71, allowing the impurities to move with the hydraulic oil and reducing the deposition of impurities on the hydraulic oil filter plate 71. By using the hydraulic oil filter plate 71 to filter impurities in the hydraulic oil, the direct contact between impurities in the hydraulic oil and the control piston 6 is reduced, thereby reducing the possibility of impurities directly contacting the control piston 6 and reducing the possibility of impurities entering between the control piston 6 and the valve body 1, affecting the normal movement of the control piston 6.

[0039] Reference Figure 1 , Figure 2 and Figure 3 A support rod 75 is fixed on the support ring 72, and the support rod 75 is slidably connected to the scraper rod 74.

[0040] In addition, a number of contact springs 76 are provided between the scraper 74 and the support rod 75, and both ends of the contact springs 76 are fixedly connected to the scraper 74 and the support rod 75.

[0041] Driven by the contact spring 76, the scraper 74 moves on the support rod 75 toward the hydraulic oil filter plate 71, so that the scraper 74 abuts against the hydraulic oil filter plate 71. By using the support rod 75 to limit the scraper 74, and then using the contact spring 76 to push the scraper 74, the scraper 74 can be stably abutted against the hydraulic oil filter plate 71.

[0042] Reference Figure 1 and Figure 2 A control oil filter plate 9 is fixed on the limit ring 8. When the control oil enters the valve body 1 and pushes the control piston 6, the control oil filter plate 9 filters any impurities that may be present in the control oil. By fixing the control oil filter plate 9 on the limit ring 8 for filtration, the contact between impurities in the control oil and the control piston 6 can be reduced, further reducing the possibility of affecting the normal movement of the control piston 6.

[0043] Working principle: When using this hydraulic control check valve, hydraulic oil enters the valve body 1 through the connecting hole 4. The hydraulic oil pushes the valve core 2, which compresses the spring 3. Hydraulic oil then flows out through the connecting hole 4 and back through the connecting hole 5. When the hydraulic oil stops pushing the valve core 2, the spring 3 separates the valve core 2 from both the connecting holes 4 and 5, preventing backflow. When backflow is needed, the control hydraulic oil pushes the control piston 6, causing it to move within the valve body 1. The control piston 6 then pushes the valve core 2, compressing the spring 3. Hydraulic oil then enters the connecting hole 4 through the connecting hole 2. Finally, the control hydraulic oil resets the control piston 6, allowing hydraulic oil to flow back from both the connecting holes 4 and 5. When the piston moves back to the ground, the hydraulic oil comes into contact with one side of the control piston 6. When the hydraulic oil contacts the control piston 6, the hydraulic oil filter plate 71 on the support ring 72 filters impurities in the hydraulic oil. When the control piston 6 moves, the top end of the control piston 6 moves on the rotating ring 731. The rotating ring 731 rotates under the action of the threaded groove 732. The rotating ring 731 drives the hydraulic oil filter plate 71 to rotate under the support of the support ring 72. When the hydraulic oil filter plate 71 rotates, the scraper 74 scrapes off the impurities on the hydraulic oil filter plate 71, allowing the impurities to move with the hydraulic oil and reducing the deposition of impurities on the hydraulic oil filter plate 71. When the control oil enters the valve body 1 and pushes the control piston 6, the control oil filter plate 9 filters any impurities that may be present in the control oil.

Claims

1. A threaded cartridge-type hydraulic control check valve, comprising a valve body (1), characterized in that: A valve core (2) is slidably connected inside the valve body (1). A spring (3) is provided between the valve core (2) and the valve body (1). Both ends of the spring (3) are fixedly connected to the valve body (1) and the valve core (2). A number of circumferentially distributed connecting holes (4) are provided on the valve body (1). A number of circumferentially distributed connecting holes (5) are provided on the valve body (1). A control piston (6) is slidably connected to the end of the valve body (1) away from the valve core (2). A limit ring (8) is fixed to the end of the valve body (1) close to the control piston (6). A filter mechanism (7) is provided between the valve core (2) and the control piston (6).

2. The threaded cartridge-type hydraulic control check valve according to claim 1, characterized in that: The filtering mechanism (7) includes a support ring (72) fixed on the inner wall of the valve body (1). The support ring (72) is located on the side of the connecting hole (4) near the control piston (6). A hydraulic oil filter plate (71) is rotatably connected to the support ring (72). The top end of the control piston (6) passes through the hydraulic oil filter plate (71). An oil rotation assembly (73) is provided between the hydraulic oil filter plate (71) and the control piston (6).

3. A threaded cartridge-type hydraulic control check valve according to claim 2, characterized in that: The rotating assembly (73) includes a rotating ring (731) fixed on the hydraulic oil filter plate (71). The control piston (6) has a threaded groove (732) on its ejector end. The ejector end of the control piston (6) passes through the rotating ring (731) and is threadedly connected to the rotating ring (731).

4. A threaded cartridge-type hydraulic control check valve according to claim 2, characterized in that: The hydraulic oil filter plate (71) is made of stainless steel.

5. A threaded cartridge-type hydraulic control check valve according to claim 2, characterized in that: A scraper (74) is provided on the support ring (72), and the scraper (74) abuts against the hydraulic oil filter plate (71).

6. A threaded cartridge-type hydraulic control check valve according to claim 5, characterized in that: A support rod (75) is fixed on the support ring (72), and the support rod (75) is slidably connected to the scraper rod (74).

7. A threaded cartridge-type hydraulic control check valve according to claim 6, characterized in that: A plurality of contact springs (76) are provided between the scraper (74) and the support rod (75), and both ends of the contact springs (76) are fixedly connected to the scraper (74) and the support rod (75).

8. A threaded cartridge-type hydraulic control check valve according to claim 2, characterized in that: A control oil filter plate (9) is fixed on the limiting ring (8).

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