Two-position four-way solenoid valve

Abstract

This application relates to the field of solenoid valves, and in particular to a two-position four-way solenoid valve, comprising a valve sleeve, a valve core, and a tail cone. The tail cone is connected to the end of the valve core. The valve sleeve has a sliding cavity, and the valve core is slidably connected to the inner wall of the sliding cavity. The outer wall of the tail cone abuts against the inner wall of the sliding cavity to form a seal. Sealing ring one and sealing ring two are coaxially connected at intervals on the outer wall of the valve core. The valve core has a through cavity coaxially. Connecting holes one and two are sequentially spaced on the outer wall of the valve core. An oil inlet one is provided on the end face of the valve sleeve, and oil inlets two, three, and four are sequentially spaced on the outer wall of the valve sleeve. The tail cone in this application prevents the valve core from sliding against the impact force of oil injected through oil inlet one, thus enabling the two-position four-way solenoid valve to accept oil through oil inlet one during use, expanding its application range and improving its adaptability.

Description

Technical Field

[0001] This application relates to the field of solenoid valves, and more particularly to a two-position four-way solenoid valve. Background Technology

[0002] Solenoid valves are industrial devices controlled by electromagnetic induction. They are basic components of automation used to control fluids and belong to the actuator category. They are not limited to hydraulic and pneumatic systems. A two-position four-way solenoid valve consists of a valve body and a drive mechanism and is a self-holding valve.

[0003] Reference Figure 1 The two-position four-way solenoid valve disclosed in the related technology includes a valve sleeve 1, a valve core 2, a moving iron core 31, a return spring 32, and a magnetic sleeve 33. The valve sleeve 1 has a sliding cavity 15 coaxially formed. The magnetic sleeve 33 is connected to the valve sleeve 1. The moving iron core 31 is slidably connected to the inner wall of the sliding cavity 15. One end of the return spring 32 in the direction of its elastic force is connected to the end face of the moving iron core 31, and the other end in the direction of its elastic force is connected to the end face of the magnetic sleeve 33. The return spring 32 has a tendency to forcefully drive the moving iron core 31 to slide away from the magnetic sleeve 33. The end of the valve core 2 is connected to the side of the moving iron core 31 away from the return spring 32. The valve core 2 has a through cavity 21 coaxially formed, which connects to the sliding cavity 15. The outer wall of the valve core 2 has a through hole 22, which connects the through cavity 21 and the sliding cavity 15. The through hole 22 is located on the side of the valve core 2 closer to the moving iron core 31. A sealing ring 4 and a sealing ring 5 are coaxially connected at intervals on the valve core 2. The outer walls of the sealing ring 4 and the sealing ring 5 abut against the inner wall of the sliding cavity 15 to form a seal. The through hole 22 is located on the side of the sealing ring 4 away from the sealing ring 5. An oil inlet 11 is opened on the end face of the valve sleeve 1 away from the magnetic sleeve 33. The oil inlet 11 connects to the sliding cavity 15. An oil inlet 12, an oil inlet 13, and an oil inlet 14 are opened at intervals on the outer wall of the valve sleeve 1. The oil inlet 12, the oil inlet 13, and the oil inlet 14 all connect to the sliding cavity 15. The oil inlet 14 is located on the side of the valve sleeve 1 near the through hole 22. The sealing ring 5 is close to the oil inlet 12, and the sealing ring 4 is close to the oil inlet 14.

[0004] Reference Figure 1 When the magnetic sleeve 33 is energized, it drives the moving iron core 31 to slide along the inner wall of the sliding cavity 15 toward the direction closer to the magnetic sleeve 33, thereby driving the valve core 2 to slide toward the direction closer to the magnetic sleeve 33. Oil inlet 11 and oil inlet 2 12 are connected, and oil inlet 3 13 and oil inlet 4 14 are connected. When the magnetic sleeve 33 is de-energized, the pulling force of the magnetic sleeve 33 on the moving iron core 31 disappears, and the elastic force of the return spring 32 drives the moving iron core 31 to slide along the inner wall of the sliding cavity 15 toward the direction away from the magnetic sleeve 33, thereby driving the valve core 2 to slide away from the magnetic sleeve 33. Oil inlet 11 and oil inlet 4 14 are connected, and oil inlet 3 13 and oil inlet 2 12 are connected.

[0005] When the operator de-energizes the magnetic sleeve 33, the oil inlet 11 and the oil inlet 4 14 are connected. Oil enters the sliding chamber 15 from the oil inlet 11. Part of the oil passes through the sliding chamber 15, the through chamber 21, and the through hole 22 in sequence and is discharged from the oil inlet 4 14. At the same time, another part of the oil in the sliding chamber 15 impacts the outer wall of the sealing ring 2 5, causing the valve core 2 to slide towards the magnetic sleeve 33, and causing the sealing ring 4 to slide towards the magnetic sleeve 33, so that the connection between the oil inlet 11 and the oil inlet 4 14 disappears. As a result, the two-position four-way solenoid valve cannot realize the function of oil entering from the oil inlet 11 during use, which limits the application range of the two-position four-way solenoid valve and reduces its adaptability. Summary of the Invention

[0006] To improve the compatibility of two-position four-way solenoid valves, this application provides a two-position four-way solenoid valve.

[0007] This application provides a two-position four-way solenoid valve, which adopts the following technical solution:

[0008] A two-position four-way solenoid valve includes a valve sleeve, a valve core, and a tail cone. The tail cone is coaxially connected to the end of the valve core. The valve sleeve has a sliding cavity coaxially formed. The valve core is slidably connected to the inner wall of the sliding cavity. The outer wall of the tail cone abuts against the inner wall of the sliding cavity to form a seal. The outer wall of the valve core is coaxially connected with a first sealing ring and a second sealing ring at intervals. The first sealing ring is located between the tail cone and the second sealing ring. The outer walls of the first and second sealing rings abut against the inner wall of the sliding cavity to form a seal. The valve core has a through cavity coaxially formed, which communicates with the sliding cavity. The outer wall of the valve core has a connecting hole 1 and a connecting hole 2 at intervals, which communicate with the through cavity. The connecting hole 1 is located at... Between the tail cone and the first sealing ring, the second connecting hole is located on the side of the second sealing ring away from the first sealing ring. The end face of the valve sleeve near the tail cone has an oil inlet 1 communicating with the sliding cavity. The outer wall of the valve sleeve has oil inlets 2, 3, and 4 communicating with the sliding cavity in sequence at intervals. Oil inlet 2 is close to the first sealing ring, and oil inlet 4 is close to the second sealing ring. When the valve core slides in the inner wall of the sliding cavity toward the valve sleeve, oil inlets 3 and 4 are located between the first and second sealing rings. When the valve core slides in the inner wall of the sliding cavity away from the valve sleeve, oil inlets 2 and 3 are located between the first and second sealing rings.

[0009] By adopting the above technical solution, when the two-position four-way solenoid valve is in use, the outer walls of sealing ring one and sealing ring two abut against the inner wall of the sliding cavity to form a seal. The valve core slides along the inner wall of the sliding cavity in a direction away from the valve sleeve. Oil inlet two and oil inlet three are located between sealing ring one and sealing ring two. Oil inlet two, the sliding cavity, and oil inlet three are connected. At the same time, oil inlet one, the sliding cavity, the through cavity, the connecting hole two, and oil inlet four are connected. Oil is injected into the sliding cavity from oil inlet one. Part of the oil in the sliding cavity passes through the through cavity and the connecting hole two in sequence and is discharged from oil inlet four. Meanwhile, another part of the oil in the sliding cavity... The oil flows sequentially through the through cavity and into the connecting hole one, which is located between the tail cone and the sealing ring one. The oil in the connecting hole one simultaneously impacts the end face of the tail cone and the end face of the sealing ring one. The pressure of the oil on the tail cone and the pressure of the oil on the sealing ring one are opposite in direction and equal in magnitude, thus offsetting the impact of the oil in the connecting hole one on the valve core. This makes the valve core less likely to slide against the impact force of the oil injected into the oil inlet one on the inner wall of the sliding cavity, realizing the function of oil entering from the oil inlet one during the use of the two-position four-way solenoid valve, expanding the application range of the two-position four-way solenoid valve, and improving the adaptability of the two-position four-way solenoid valve.

[0010] Optionally, a drive assembly is connected to the valve sleeve. The drive assembly includes a moving iron core, a magnetic sleeve, and a return spring. The magnetic sleeve is connected to the end of the valve sleeve away from the oil inlet. The end face of the magnetic sleeve facing the valve sleeve has a drive cavity for the moving iron core to slide. The drive cavity is connected to the sliding cavity. The end of the moving iron core is connected to the end of the valve core away from the tail cone. The sliding direction of the moving iron core coincides with the sliding direction of the valve core. When the magnetic sleeve is energized, it drives the moving iron core to slide away from the valve sleeve. The return spring is connected between the moving iron core and the inner wall of the drive cavity. The return spring has an elastic force that tends to drive the moving iron core to slide closer to the valve sleeve.

[0011] By adopting the above technical solution, when the magnetic sleeve is energized, it drives the moving iron core to slide away from the valve sleeve along the inner wall of the drive cavity, causing the valve core to slide closer to the magnetic sleeve along the inner wall of the sliding cavity. Oil inlet three and oil inlet four are located between sealing ring one and sealing ring two, connecting oil inlet three, the sliding cavity, and oil inlet four. Simultaneously, oil inlet two, the sliding cavity, the through cavity, and oil inlet one are connected, realizing the opening of the first connection mode of the two-position four-way solenoid valve. When the magnetic sleeve is de-energized, the magnetic sleeve... When the tension of the core disappears, the spring force of the return spring drives the moving iron core to slide along the inner wall of the drive cavity toward the valve sleeve, which in turn drives the valve core to slide along the inner wall of the sliding cavity toward the direction away from the magnetic sleeve. Oil inlet 2 and oil inlet 3 are located between sealing ring 1 and sealing ring 2. Oil inlet 2, sliding cavity and oil inlet 3 are connected. At the same time, oil inlet 4, sliding cavity, connecting hole 2, through cavity and oil inlet 1 are connected, realizing the opening of the second connection mode of the two-position four-way solenoid valve and improving the stability of the two-position four-way solenoid valve's on and off operation.

[0012] Optionally, a pull rod is connected to the magnetic sleeve, and a tension hole is opened on the end face of the magnetic sleeve away from the valve sleeve for the pull rod to pass through. The tension hole is connected to the drive cavity, and the end of the pull rod passes through the tension hole and is connected to the moving iron core. The sliding direction of the pull rod and the sliding direction of the moving iron core are parallel to each other.

[0013] By adopting the above technical solution, when the two-position four-way solenoid valve loses power and becomes uncontrollable, the operator can grip the outer wall of the lever and drive the lever to slide on the inner wall of the extension hole, causing the moving iron core to slide on the inner wall of the drive chamber, and causing the valve core to slide on the inner wall of the sliding chamber. This allows for manual positioning and opening of the two-position four-way solenoid valve for different connection modes, thereby improving the adaptability of the two-position four-way solenoid valve.

[0014] Optionally, the end face of the magnetic sleeve away from the valve sleeve is connected to a guide seat, and the guide seat has a guide hole for the pull rod to slide, and the guide hole is connected to the tension hole.

[0015] By adopting the above technical solution, the guide seat is provided with a guide hole for the pull rod to slide. When the operator drives the pull rod to slide on the inner wall of the guide hole and drives the moving iron core to slide on the inner wall of the drive cavity, the pull rod is not easy to deviate when it slides on the inner wall of the guide hole, thereby improving the stability of the pull rod driving the moving iron core to slide.

[0016] Optionally, the guide seat is connected to an opening and closing assembly, which includes an opening and closing arc block, a knob, and a spring pin. The end of the opening and closing arc block is connected to the end face of the guide seat away from the magnetic sleeve. The connection between the opening and closing arc block and the guide seat forms a stepped surface for the outer wall of the spring pin to abut. The knob has a receiving cavity for accommodating the opening and closing arc block. The outer wall of the knob has a limiting hole for the spring pin to be inserted. The limiting hole communicates with the receiving cavity. The end of the pull rod away from the moving iron core is connected to the bottom wall of the receiving cavity. When the return spring force drives the moving iron core to slide towards the valve sleeve, the outer wall of the spring pin abuts against the stepped surface to form a limit. When the knob slides away from the guide seat, the outer wall of the spring pin is flush with the end of the opening and closing arc block. The knob rotates around its own axis, and the outer wall of the spring pin abuts against the end of the opening and closing arc block to form a limit. The pull rod drives the moving iron core to slide towards the drive cavity.

[0017] By adopting the above technical solution, one end of the pull rod is connected to the moving iron core, and the other end is connected to the inner wall of the receiving cavity. When the two-position four-way solenoid valve is de-energized, the return spring drives the moving iron core to slide closer to the valve sleeve on the inner wall of the driving cavity, causing the valve core to slide away from the magnetic sleeve on the inner wall of the sliding cavity. Oil inlet two and oil inlet three are located between sealing ring one and sealing ring two, realizing the opening of the first state of the two-position four-way solenoid valve. When it is necessary to open the second state of the two-position four-way solenoid valve, the operator holds the outer wall of the knob and drives the knob to slide away from the opening and closing arc block. The elastic pin moves so that its outer wall is flush with the end of the opening and closing arc block, simultaneously driving the knob to rotate around its own axis. The outer wall of the elastic pin abuts against the end face of the opening and closing arc block to form a limit. The pull rod drives the moving iron core to slide away from the valve sleeve along the inner wall of the drive cavity, driving the valve core to slide towards the magnetic sleeve in the inner wall of the sliding cavity. Oil inlet three and oil inlet four are located between sealing ring one and sealing ring two, realizing the opening of the second state of the two-position four-way solenoid valve. It is not necessary for the operator to keep the two-position four-way solenoid valve in the second state open by constantly pulling the pull rod, thereby improving the ease of use of the two-position four-way solenoid valve.

[0018] Optionally, the opening and closing assembly further includes an opening and closing elastic element and a spring pad. The spring pad is coaxially connected to the outer wall of the pull rod, and the opening and closing elastic element is connected between the spring pad and the guide seat. The opening and closing elastic element has the tendency to elastically drive the spring pad to slide towards the magnetic sleeve.

[0019] By adopting the above technical solution, when the end face of the elastic pin abuts against the end of the opening and closing arc block, oil inlet three and oil inlet four are located between sealing ring one and sealing ring two. When it is necessary to change the flow state of the two-position four-way solenoid valve, the operator drives the knob to rotate, so that the abutment effect between the outer wall of the elastic pin and the end face of the opening and closing arc block disappears. The elastic force of the opening and closing elastic element drives the spring pad to slide towards the magnetic sleeve. The outer wall of the elastic pin abuts against the stepped surface to form a limit. At the same time, the pull rod drives the moving iron core to slide towards the valve sleeve. Oil inlet two and oil inlet three are located between sealing ring one and sealing ring two, realizing the opening of the second flow state of the two-position four-way solenoid valve. There is no need for the operator to manually drive the knob to slide towards the guide seat, thereby improving the ease of use of the two-position four-way solenoid valve.

[0020] Optionally, the outer wall of the guide seat is screwed and fixed to the inner wall of the tension hole to form a fixed structure.

[0021] By adopting the above technical solution, the guide seat and the magnetic sleeve are processed separately, and the outer wall thread of the guide seat is tightened and fixed to the inner wall of the tension hole to form a fixed structure, thereby improving the processing efficiency of the two-position four-way solenoid valve.

[0022] Optionally, the end face of the opening and closing arc block is provided with a limiting groove to accommodate the elastic pin.

[0023] By adopting the above technical solution, when the knob slides away from the guide seat, the outer wall of the elastic pin is flush with the end of the opening and closing arc block. The knob rotates around its own axis, the elastic pin is embedded in the limiting groove, and the outer wall of the elastic pin presses against the inner wall of the limiting groove to form a limit, so that the knob is not easy to deflect when it is hit, thereby improving the limiting stability of the elastic pin on the end face of the opening and closing arc block.

[0024] Optionally, a positioning assembly is connected between the opening / closing arc block and the knob. The positioning assembly includes positioning block one, positioning block two, positioning block three, and elastic element one. An air passage is formed in the inner wall of the limiting groove, extending through the outer wall of the opening / closing arc block in a direction away from the pull rod. A positioning hole is formed in the outer wall of the knob, communicating with the receiving cavity. Positioning block one is slidably connected to the inner wall of the air passage, with its end located within the limiting groove. Positioning block two is slidably connected to the inner wall of the air passage, with its end flush with the end face of the limiting arc block. Positioning block three is slidably connected to the inner wall of the positioning hole. One end of the elastic element is connected to the inner wall of the positioning hole, and the other end of the elastic element is connected to the end face of the positioning block. The elastic element has the tendency to push the positioning block to slide closer to the receiving cavity. When the elastic pin is embedded in the limiting groove, the air passage is connected to the positioning hole. The outer wall of the elastic pin abuts against the outer wall of the positioning block and pushes the positioning block to slide closer to the air passage. This causes the end face of the positioning block to abut against the end face of the positioning block and pushes the positioning block to slide away from the air passage. The end face of the positioning block is flush with the outer wall of the knob.

[0025] By adopting the above technical solution, when the operator rotates the knob to drive the elastic pin into the limiting groove, the positioning hole connects to the air passage, the outer wall of the elastic pin abuts against the outer wall of the positioning block one, and drives the positioning block one to slide towards the air passage. The air pressure in the air passage increases, driving the two ends of the positioning block to insert into the positioning hole and abut against the end face of the positioning block three, causing the positioning block three to slide away from the air passage. The end face of the positioning block three is flush with the outer wall of the knob, and the operator can directly observe whether the elastic pin is embedded in the limiting groove, thereby improving the ease of use of the two-position four-way solenoid valve.

[0026] Optionally, an indicator is connected to the guide seat. When the knob is rotated, the indicator and the positioning hole are on the same plane, and the elastic pin is guided and embedded in the limiting groove to form a fixed position.

[0027] By adopting the above technical solution, when the operator needs to insert the elastic pin into the limiting groove, the operator holds the outer wall of the knob and drives the knob to slide away from the guide seat. The outer wall of the elastic pin is flush with the end face of the opening and closing arc block. Rotating the knob makes the indicator and the positioning hole on the same plane. At the same time, the elastic pin is guided and inserted into the limiting groove to form a fixed position. The operator does not need to repeatedly rotate the knob to adjust the orientation of the elastic pin on the opening and closing arc block, thereby improving the ease of use of the two-position four-way solenoid valve.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The tail cone design prevents the valve core from sliding against the impact force of the oil injected into the inlet, thus enabling the two-position four-way solenoid valve to enter oil from the inlet during use, expanding its application range and improving its adaptability.

[0030] 2. The pull rod setting allows for manual positioning and opening of the two-position four-way solenoid valve in different connection modes, thereby improving the adaptability of the two-position four-way solenoid valve.

[0031] 3. The guide seat is designed to be machined separately from the magnetic sleeve. The outer wall of the guide seat is then screwed and fixed to the inner wall of the tension hole to form a fixed structure, thereby improving the machining efficiency of the two-position four-way solenoid valve. Attached Figure Description

[0032] Figure 1 This is a cross-sectional structural diagram of a two-position four-way solenoid valve in related technologies.

[0033] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0034] Figure 3 This is a cross-sectional view of an embodiment of this application.

[0035] Figure 4 This is a partial cross-sectional view of an embodiment of this application, mainly showing the positioning component.

[0036] Explanation of reference numerals in the attached drawings: 1. Valve sleeve; 11. Oil inlet 1; 12. Oil inlet 2; 13. Oil inlet 3; 14. Oil inlet 4; 15. Sliding chamber; 2. Valve core; 21. Through chamber; 22. Through hole; 23. Connecting hole 1; 24. Connecting hole 2; 3. Drive assembly; 31. Moving iron core; 32. Return spring; 33. Magnetic sleeve; 331. Drive chamber; 332. Tensioning hole; 333. Limiting surface; 4. Sealing ring 1; 5. Sealing ring 2; 6. Tail cone; 7. Pull rod; 71. Limiting section; 72. Sliding section; 73. Clamping surface; 8. Guide seat; 81. 9. Guide hole; 91. Opening / closing assembly; 92. Opening / closing arc block; 93. Stepped surface; 94. Limiting groove; 95. Air passage; 96. Knob; 97. Receiving cavity; 98. Positioning hole; 99. Limiting hole; 90. Elastic pin; 91. Opening / closing elastic element; 92. Emergency spring one; 93. Emergency spring two; 94. Spring pad; 10. Positioning assembly; 101. Positioning block one; 1011. Elastic part; 1012. Sliding part; 102. Positioning block two; 103. Positioning block three; 104. Elastic element one; 105. Elastic element two; 16. Indicator. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 2-4 This application will be described in further detail.

[0038] This application discloses a two-position four-way solenoid valve. (Refer to...) Figure 2 and Figure 3 The two-position four-way solenoid valve includes a valve sleeve 1, a valve core 2, a tail cone 6, and a drive assembly 3. In this embodiment, the valve sleeve 1 is cylindrical, and a sliding cavity 15 for the valve core 2 to slide is coaxially formed on the valve sleeve 1. The sliding direction of the valve core 2 coincides with the axis of the valve sleeve 1. An oil inlet 11 is formed at one end of the valve sleeve 1 along the axial direction, and the oil inlet 11 connects to the sliding cavity 15. The sliding cavity 15 penetrates the outer wall of the valve sleeve 1 along the axis of the valve sleeve 1 in a direction away from the oil inlet 11. An oil inlet 12, an oil inlet 13, and an oil inlet 14 are spaced apart on the outer wall of the valve sleeve 1. The oil inlets 12, 13, and 14 are evenly distributed along the axis of the valve sleeve 1, and all three inlets connect to the sliding cavity 15.

[0039] Reference Figure 3 The valve core 2 has a coaxial through cavity 21 that extends along the axis of the valve core 2 through the outer wall of the valve core 2 and connects to the sliding cavity 15. The tail cone 6 is coaxially fixed to the end of the valve core 2 near the oil inlet 11, and its outer circumference abuts against the inner wall of the sliding cavity 15 to form a seal. A sealing ring 4 and a sealing ring 5 are fixed at intervals on the outer wall of the valve core 2. The sealing ring 4 is located between the tail cone 6 and the sealing ring 5, and the outer walls of the sealing ring 4 and the sealing ring 5 abut against the inner wall of the sliding cavity 15 to form a seal. The sealing ring 4 is near the oil inlet 12, and the sealing ring 5 is near the oil inlet 14.

[0040] Reference Figure 3 The outer wall of the valve core 2 is provided with a connecting hole 23 and a connecting hole 24 spaced apart. The connecting hole 23 is located between the tail cone 6 and the sealing ring 4, and the connecting hole 24 is located on the side of the sealing ring 5 away from the sealing ring 4. Both the connecting hole 23 and the connecting hole 24 are connected to the through cavity 21. The drive assembly 3 is connected to the side of the valve sleeve 1 away from the oil inlet 11. The drive assembly 3 is used to drive the valve core 2 to slide on the inner wall of the sliding cavity 15.

[0041] Reference Figure 3When the drive assembly 3 drives the valve core 2 to slide along the inner wall of the sliding cavity 15 towards the drive assembly 3, the oil inlet 3 13 and the oil inlet 4 14 are located between the sealing ring 1 4 and the sealing ring 2 5, and the oil inlet 3 13, the sliding cavity 15 and the oil inlet 4 14 are connected. At the same time, the oil inlet 1 11, the sliding cavity 15, the through cavity 21, the connecting hole 1 23 and the oil inlet 2 12 are connected, realizing the opening of the first connected state of the two-position four-way solenoid valve. When the drive assembly 3 drives the valve core 2 to slide along the inner wall of the sliding cavity 15 away from the drive assembly 3, the oil inlet 2 12 and the oil inlet 4 14 are located between the sealing ring 1 4 and the sealing ring 2 5, and the oil inlet 11, the sliding cavity 15, the through cavity 21, the connecting hole 2 24 and the oil inlet 4 14 are connected. At the same time, the oil inlet 2 12, the sliding cavity 15 and the oil inlet 3 13 are connected, realizing the opening of the second connected state of the two-position four-way solenoid valve.

[0042] Reference Figure 3 When oil is injected into the sliding chamber 15 from the oil inlet 11, part of the oil in the sliding chamber 15 passes through the through chamber 21 and enters the connecting hole 23. The oil in the connecting hole 23 impacts the end face of the tail cone 6 and the end face of the sealing ring 4. The impact force on the tail cone 6 and the impact force on the sealing ring 4 are opposite in direction and equal in magnitude, making the valve core 2 less likely to be displaced on the inner wall of the sliding chamber 15 due to the impact of the oil. This improves the stability of the two-position four-way solenoid valve in the connected state, realizes the function of oil entering from the oil inlet 11 during the use of the two-position four-way solenoid valve, expands the application range of the two-position four-way solenoid valve, and improves the adaptability of the two-position four-way solenoid valve.

[0043] Reference Figure 3 The drive assembly 3 includes a moving iron core 31, a magnetic sleeve 33, and a return spring 32. The magnetic sleeve 33 is coaxially fixed to the end of the valve sleeve 1 away from the tail cone 6. The end face of the magnetic sleeve 33 facing the valve sleeve 1 has a coaxially formed drive cavity 331 for sliding of the moving iron core 31. The drive cavity 331 is connected to the sliding cavity 15. The end of the moving iron core 31 is fixed to the end of the valve core 2 away from the tail cone 6. The return spring 32 is connected to the end of the moving iron core 31 away from the valve core 2. The return spring 32 has an elastic force that tends to drive the moving iron core 31 to slide closer to the valve sleeve 1.

[0044] Reference Figure 3 When the magnetic sleeve 33 is energized, it drives the moving iron core 31 to slide away from the valve sleeve 1, which in turn drives the valve core 2 to slide closer to the magnetic sleeve 33. When the magnetic sleeve 33 is de-energized, the pulling force of the magnetic sleeve 33 on the moving iron core 31 disappears, and the elastic force of the reset spring 32 drives the magnetic sleeve 33 to slide closer to the valve sleeve 1, thereby resetting the moving iron core 31.

[0045] Reference Figure 3A pull rod 7 is connected to the magnetic sleeve 33. A tension hole 332 is coaxially formed on the end face of the magnetic sleeve 33 away from the valve sleeve 1, through which the pull rod 7 passes. The tension hole 332 connects to the drive cavity 331. The inner diameter of the tension hole 332 is smaller than the inner diameter of the drive cavity 331. The connection between the tension hole 332 and the drive cavity 331 forms a limiting surface 333 for the end face of the moving iron core 31 to abut. The end of the pull rod 7 passes through the tension hole 332 and enters the drive cavity 331, coaxially connecting to the end of the moving iron core 31, thus achieving the connection between the pull rod 7 and the moving iron core 31.

[0046] Reference Figure 3 The magnetic sleeve 33 is connected to a guide seat 8. In this embodiment, the guide seat 8 is made of 1215 steel. The end of the guide seat 8 is threaded and fixed to the inner wall of the tension hole 332 to form a fixed structure, thereby fixing the magnetic sleeve 33 and the guide seat 8. The guide seat 8 has a guide hole 81 coaxially opened on the end face facing the magnetic sleeve 33 for the pull rod 7 to slide. The guide hole 81 is connected to the tension hole 332, and the axis of the guide hole 81 coincides with the axis of the tension hole 332. The guide hole 81 passes through the outer wall of the guide seat 8 along its own axis. The end of the pull rod 7 away from the moving iron core 31 passes through the guide hole 81 and protrudes from the end face of the guide seat 8, so that the pull rod 7 is less likely to deviate when driving the moving iron core 31 to slide, thereby improving the stability of the moving iron core 31 sliding on the inner wall of the drive cavity 331.

[0047] Reference Figure 3 The pull rod 7 includes a limiting section 71 and a sliding section 72. In this embodiment, both the limiting section 71 and the sliding section 72 are cylindrical rods. The end of the limiting section 71 is coaxially welded and fixed to the end of the sliding section 72. The diameter of the limiting section 71 is larger than the diameter of the sliding section 72. The connection between the limiting section 71 and the sliding section 72 forms a mating surface 73. The end face of the limiting section 71 away from the sliding section 72 is connected to the moving iron core 31. The end face of the sliding section 72 away from the limiting section 71 protrudes from the end face of the guide seat 8.

[0048] Reference Figure 3 A control assembly 9 is connected to the guide seat 8. The control assembly 9 is used to control the sliding of the pull rod 7. The control assembly 9 includes a control arc block 91, a knob 92, an elastic pin 93, a control elastic element 94, and a spring washer 95. The spring washer 95 is coaxially sleeved on the outer wall of the sliding section 72. The end face of the spring washer 95 abuts against the abutting surface 73 to form a limit. The return spring 32 is coaxially sleeved on the outer wall of the limiting section 71. One end of the return spring 32 in the direction of elastic force is fixed to the end face of the moving iron core 31, and the other end of the return spring 32 in the direction of elastic force is fixed to the end face of the spring washer 95. The return spring 32 has the elastic force to drive the moving iron core 31 to slide closer to the valve sleeve 1.

[0049] Reference Figure 3The opening and closing elastic element 94 includes an emergency spring 941 and an emergency spring 942. In this embodiment, both emergency springs 941 and 942 are compression springs with a certain deformation capacity. The inner diameter of emergency spring 941 is larger than that of emergency spring 942. Emergency spring 942 is coaxially sleeved on the outer wall of the sliding section 72 and on the outer wall of emergency spring 941. One end of emergency springs 941 and 942 in the direction of elastic force is connected to the end face of the spring pad 95, and the other end of emergency springs 941 and 942 in the direction of elastic force is connected to the inner wall of the guide hole 81. Emergency springs 941 and 942 have the elastic force to drive the spring pad 95 to slide towards the magnetic sleeve 33.

[0050] Reference Figure 3 and Figure 4 The opening and closing arc block 91 is coaxially fixed on the end face of the guide seat 8 away from the magnetic sleeve 33. The connection between the opening and closing arc block 91 and the guide seat 8 forms a stepped surface 911 for the outer wall of the elastic pin 93 to abut. The end face of the knob 92 is coaxially provided with a receiving cavity 921 for accommodating the opening and closing arc block 91. The pull rod 7 protrudes from the end face of the guide seat 8 and is fixed to the bottom wall of the receiving cavity 921. The outer wall of the knob 92 is provided with a limiting hole 923 for the elastic pin 93 to be inserted. The axis of the limiting hole 923 is perpendicular to the axis of the knob 92, and the limiting hole 923 is connected to the receiving cavity 921.

[0051] Reference Figure 3 and Figure 4 When emergency spring 1 941 and emergency spring 2 942 drive spring pad 95 to slide towards the magnetic sleeve 33, the outer wall of elastic pin 93 abuts against step surface 911, causing pull rod 7 and moving iron core 31 to slide towards valve sleeve 1, driving valve core 2 to slide away from magnetic sleeve 33. Oil inlet 2 12 and oil inlet 3 13 are located between sealing ring 1 4 and sealing ring 2 5, realizing the opening of the first connected state of the two-position four-way solenoid valve; when the operator drives knob 92 away from the magnetic sleeve 33... When the guide seat 8 slides in the direction, the elastic pin 93 disengages from the step surface 911, and the outer wall of the elastic pin 93 is flush with the end face of the opening and closing arc block 91. Rotating the knob 92 drives the outer wall of the elastic pin 93 to abut against the end face of the opening and closing arc block 91, causing the pull rod 7 and the moving iron core 31 to slide away from the valve sleeve 1, and driving the valve core 2 to slide closer to the magnetic sleeve 33. The oil inlet 3 13 and the oil inlet 4 14 are located between the sealing ring 1 4 and the sealing ring 2 5, realizing the opening of the second connection state of the two-position four-way solenoid valve.

[0052] Reference Figure 3 and Figure 4The end face of the opening / closing arc block 91 is provided with a limiting groove 912 to accommodate the elastic pin 93. The limiting groove 912 is an arc-shaped groove, and its axis is perpendicular to the axis of the pull rod 7. The limiting groove 912 passes through the outer wall of the opening / closing arc block 91 along its own axis. A positioning component 10 is connected between the opening / closing arc block 91 and the knob 92. The positioning component 10 is used to limit the rotation of the knob 92. The positioning component 10 includes positioning block one 101, positioning block two 102, positioning block three 103, elastic element one 104, and elastic element two 105. Positioning block one 101 includes an elastic part 1011 and a sliding part 1012. The end of the sliding part 1012 is fixed to the middle of the elastic part 1011. Both the sliding part 1012 and the elastic part 1011 are strip-shaped rods. The axis of the sliding part 1012 is perpendicular to the axis of the elastic part 1011. The elastic part 1011 can be made of rubber or silicone. In this embodiment, the material of the elastic part 1011 is rubber, which has a certain deformation capability. The structures of positioning block two 102 and positioning block three 103 are the same as those of positioning block one 101.

[0053] Reference Figure 3 and Figure 4 An air passage 913 is provided on the bottom wall of the limiting groove 912. The air passage 913 penetrates the outer wall of the opening and closing arc block 91 in a direction away from the pull rod 7. A positioning hole 922 is provided on the outer wall of the knob 92, which connects to the receiving cavity 921. The positioning block 101 is slidably connected to the inner wall of the air passage 913. The sliding direction of the positioning block 101 is parallel to the axis of the pull rod 7. The elastic element 104 can be a compression spring or a tension spring. In this embodiment, the elastic element 104 is a compression spring and has a certain deformation capability. One end of the elastic element 104 in the elastic direction is connected to the inner wall of the air passage 913, and the other end of the elastic element 104 in the elastic direction is connected to the positioning block 101. The elastic element 104 has the elastic force to drive the positioning block 101 to slide closer to the limiting groove 912, and the end of the positioning block 101 tends to protrude into the limiting groove 912. Positioning block 2 102 is slidably connected to the inner wall of airway 913. The sliding direction of positioning block 2 102 is perpendicular to the sliding direction of positioning block 1 101, and the end of positioning block 2 102 is flush with the outer wall of opening and closing arc block 91.

[0054] Reference Figure 3 and Figure 4The second elastic element 105 can be a compression spring or a torsion spring. In this embodiment, the second elastic element 105 is a compression spring, which has a certain deformation capability. One end of the second elastic element 105 in the elastic direction is connected to the inner wall of the positioning hole 922, and the other end of the second elastic element 105 in the elastic direction is connected to the end face of the third positioning block 103. The second elastic element 105 has the tendency to elastically drive the third positioning block 103 to slide towards the receiving cavity 921. An indicator 16 is fixed to the end face of the guide seat 8 facing the knob 92. When the knob 92 slides away from the guide seat 8, the elastic pin 93 disengages from the stepped surface 911. When the knob 92 is rotated, the indicator 16 and the positioning hole 922 are on the same plane, and the guide elastic pin 93 is embedded in the limiting groove 912 to form a fixed position. At the same time, the outer wall of the elastic pin 93 abuts against the positioning block 101, driving the positioning block 101 to slide away from the limiting groove 912. The air pressure in the air passage 913 increases, driving the positioning block 101 to slide away from the limiting groove 912. The end of the 02 is embedded in the positioning hole 922. The end face of the second positioning block 102 abuts against the end face of the third positioning block 103 and drives the third positioning block 103 to slide away from the air passage 913. The end face of the third positioning block 103 is flush with the outer wall of the knob 92, so that the operator can directly observe whether the elastic pin 93 is embedded in the limiting groove 912. The outer wall of the elastic pin 93 abuts against the inner wall of the limiting groove 912 to form a limit, so that the knob 92 is not easy to rotate on the outer wall of the guide seat 8, thereby improving the stability of the two-position four-way solenoid valve opening.

[0055] The implementation principle of a two-position four-way solenoid valve according to an embodiment of this application is as follows: oil is injected into the sliding cavity 15 from the oil inlet 11. Part of the oil in the sliding cavity 15 passes through the through cavity 21 and enters the connecting hole 23. The oil in the connecting hole 23 impacts the end face of the tail cone 6 and the end face of the sealing ring 4. The impact force on the tail cone 6 and the impact force on the sealing ring 4 are opposite in direction and equal in magnitude, making the valve core 2 less likely to be displaced on the inner wall of the sliding cavity 15 due to the impact of the oil. This improves the stability of the two-position four-way solenoid valve in the connected state, realizes the function of oil entering from the oil inlet 11 during the use of the two-position four-way solenoid valve, expands the application range of the two-position four-way solenoid valve, and improves the adaptability of the two-position four-way solenoid valve.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A two-position four-way solenoid valve, characterized in that: The device includes a valve sleeve (1), a valve core (2), and a tail cone (6). The tail cone (6) is coaxially connected to the end of the valve core (2). The valve sleeve (1) has a sliding cavity (15) coaxially formed. The valve core (2) is slidably connected to the inner wall of the sliding cavity (15). The outer wall of the tail cone (6) abuts against the inner wall of the sliding cavity (15) to form a seal. The outer wall of the valve core (2) is coaxially connected with a first sealing ring (4) and a second sealing ring (5) at intervals. The first sealing ring (4) is located between the tail cone (6) and the second sealing ring (5). The outer walls of the first sealing ring (4) and the second sealing ring (5) abut against the inner wall of the sliding cavity (15) to form a seal. The valve core (2) has a through cavity (21) coaxially formed. The valve core (2) has a connecting sliding cavity (15) and a connecting hole 1 (23) and a connecting hole 2 (24) that communicate with the through cavity (21) in sequence on its outer wall. The connecting hole 1 (23) is located between the tail cone (6) and the sealing ring 1 (4). The connecting hole 2 (24) is located on the side of the sealing ring 2 (5) away from the sealing ring 1 (4). The valve sleeve (1) has an oil inlet 1 (11) that communicates with the sliding cavity (15) on its end face near the tail cone (6). The valve sleeve (1) has an oil inlet 2 (12), an oil inlet 3 (13) and an oil inlet 4 (14) that communicate with the sliding cavity (15) in sequence on its outer wall. The oil inlet 2 (12) is near the sealing ring 1 (4). The oil inlet 4 (11) is located on the side of the sealing ring 2 (5) away from the sealing ring 1 (4). The valve sleeve (1) has an oil inlet 1 (11) that communicates ...2 (11) is located on the side of the sealing 14) When the valve core (2) slides towards the valve sleeve (1) from the inner wall of the sliding cavity (15), near the sealing ring 2 (5), the oil inlet 2 (12) and oil inlet 3 (13) are located between the sealing ring 1 (4) and the sealing ring 2 (5); when the valve core (2) slides away from the valve sleeve (1) from the inner wall of the sliding cavity (15), the oil inlet 3 (13) and oil inlet 4 (14) are located between the sealing ring 1 (4) and the sealing ring 2 (5); a drive assembly (3) is connected to the valve sleeve (1), the drive assembly (3) includes a moving iron core (31), a magnetic sleeve (33) and a return spring (32), the magnetic sleeve (33) is connected to the valve sleeve (1) away from the oil inlet 1 At the end of (11), the magnetic sleeve (33) is provided with a drive cavity (331) for sliding of the moving iron core (31) on the end face of the valve sleeve (1). The drive cavity (331) is connected to the sliding cavity (15). The end of the moving iron core (31) is connected to the end of the valve core (2) away from the tail cone (6). The sliding direction of the moving iron core (31) coincides with the sliding direction of the valve core (2). The magnetic sleeve (33) is energized to drive the moving iron core (31) to slide away from the valve sleeve (1). The return spring (32) is connected between the moving iron core (31) and the inner wall of the drive cavity (331). The return spring (32) has the elasticity to drive the moving iron core (31) to slide closer to the valve sleeve (1).A pull rod (7) is connected to the magnetic sleeve (33). A tension hole (332) for the pull rod (7) to pass through is provided on the end face of the magnetic sleeve (33) away from the valve sleeve (1). The tension hole (332) communicates with the drive cavity (331). The end of the pull rod (7) passes through the tension hole (332) and is connected to the moving iron core (31). The sliding direction of the pull rod (7) and the sliding direction of the moving iron core (31) are parallel to each other. A pull rod (7) is connected to the end face of the magnetic sleeve (33) away from the valve sleeve (1). The guide seat (8) has a guide hole (81) for sliding the pull rod (7), and the guide hole (81) is connected to the tension hole (332); the guide seat (8) is connected to an opening and closing assembly (9), which includes an opening and closing arc block (91), a knob (92) and an elastic pin (93). The end of the opening and closing arc block (91) is connected to the end face of the guide seat (8) away from the magnetic sleeve (33), and the connection between the opening and closing arc block (91) and the guide seat (8) is shaped like a... The knob (92) has a stepped surface (911) for the elastic pin (93) to abut against the outer wall. The knob (92) has a cavity (921) for accommodating the opening and closing arc block (91). The outer wall of the knob (92) has a limiting hole (923) for the elastic pin (93) to be inserted. The limiting hole (923) is connected to the cavity (921). The end of the pull rod (7) away from the moving iron core (31) is connected to the bottom wall of the cavity (921). When the return spring (32) forces the moving iron core (31) to move towards the edge of the cavity, the knob (92) will be able to abut against the moving iron core (31). When the knob (92) slides towards the valve sleeve (1), the outer wall of the elastic pin (93) abuts against the stepped surface (911) to form a limit; when the knob (92) slides away from the guide seat (8), the outer wall of the elastic pin (93) is flush with the end of the opening and closing arc block (91), the knob (92) rotates around its own axis, the outer wall of the elastic pin (93) abuts against the end of the opening and closing arc block (91) to form a limit, and the pull rod (7) drives the moving iron core (31) to slide towards the drive cavity (331).

2. The two-position four-way solenoid valve according to claim 1, characterized in that: The opening and closing assembly (9) also includes an opening and closing elastic element (94) and a spring pad (95). The spring pad (95) is coaxially connected to the outer wall of the pull rod (7). The opening and closing elastic element (94) is connected between the spring pad (95) and the guide seat (8). The opening and closing elastic element (94) has the tendency to elastically drive the spring pad (95) to slide towards the magnetic sleeve (33).

3. The two-position four-way solenoid valve according to claim 1, characterized in that: The guide seat (8) is screwed onto the outer wall and fixed to the inner wall of the tension hole (332) to form a fixed structure.

4. The two-position four-way solenoid valve according to claim 1, characterized in that: The end face of the opening and closing arc block (91) is provided with a limiting groove (912) for accommodating the elastic pin (93).

5. The two-position four-way solenoid valve according to claim 4, characterized in that: A positioning component (10) is connected between the opening / closing arc block (91) and the knob (92). The positioning component (10) includes a positioning block one (101), a positioning block two (102), a positioning block three (103), and a spring element one (104). An air passage (913) is provided on the inner wall of the limiting groove (912). The air passage (913) passes through the outer wall of the opening / closing arc block (91) in a direction away from the pull rod (7). The outer wall of the knob (92) is provided with... There is a positioning hole (922) that connects to the receiving cavity (921). The first positioning block (101) is slidably connected to the inner wall of the air passage (913), and the end of the first positioning block (101) is located in the limiting groove (912). The second positioning block (102) is slidably connected to the inner wall of the air passage (913), and the end of the second positioning block (102) is flush with the end face of the limiting arc block. The third positioning block (103) is slidably connected to the positioning hole (921). On the inner wall of 922), one end of the elastic element (104) in the elastic direction is connected to the inner wall of the positioning hole (922), and the other end of the elastic element (104) in the elastic direction is connected to the end face of the positioning block (103). The elastic element (104) has the tendency to elastically drive the positioning block (103) to slide towards the receiving cavity (921). When the elastic pin (93) is embedded in the limiting groove (912), the air passage (913) The elastic pin (93) is connected to the positioning hole (922). The outer wall of the elastic pin (93) abuts against the outer wall of the positioning block one (101) and drives the positioning block one (101) to slide towards the air passage (913). This causes the end face of the positioning block two (102) to abut against the end face of the positioning block three (103) and drives the positioning block three (103) to slide away from the air passage (913). The end face of the positioning block three (103) is flush with the outer wall of the knob (92).

6. The two-position four-way solenoid valve according to claim 5, characterized in that: The guide seat (8) is connected to an indicator (16). When the knob (92) is rotated, the indicator (16) and the positioning hole (922) are on the same plane, and the elastic pin (93) is guided and embedded in the limiting groove (912) to form a fixed position.

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