Cartridge valve with leak-proof function
By introducing sealing rings, gaskets, and elastic elements into the cartridge valve, the leakage problem caused by thread errors is solved, achieving high sealing performance and safety. Equipped with a humidity alarm, it can promptly handle leaks and prevent fires or explosions.
Patent Information
- Application Number
- CN202520665221.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-10
AI Technical Summary
The thread machining error of existing cartridge valves leads to poor sealing, which may cause hydraulic oil leakage, resulting in waste and environmental pollution, and may even cause fire or explosion.
Design a cartridge valve structure with a sealing ring, sealing gasket, leak-proof shell and elastic element. The sealing performance is enhanced after installation by threaded groove, and a humidity alarm and sponge gasket are equipped to detect leaks and issue an alarm.
It significantly improves the sealing performance of cartridge valves, reduces maintenance requirements, prevents safety hazards, and ensures the safe and reliable operation of the device.
Smart Images
Figure CN223964687U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cartridge valve manufacturing technology, and in particular to a cartridge valve with anti-leakage function. Background Technology
[0002] Cartridge valves are used in various hydraulic machinery. They differ from ordinary hydraulic control valves in that their flow rate can reach 1000L / min and their diameter can reach 200-250mm. Their function is relatively simple, mainly to open or close the hydraulic circuit. Only when used in combination with ordinary hydraulic control valves can they control the direction, pressure and flow of the hydraulic fluid in the system.
[0003] Cartridge valves typically need to be mounted on a specially designed base plate or valve block. These base plates or valve blocks have pre-machined through holes and threaded holes, and are securely fixed to the designated position in the hydraulic system using appropriate fasteners (such as bolts and nuts). However, if there is a slight error in the machining of the threads on the cartridge valve and the threaded holes on the valve block, they may not fit tightly, allowing hydraulic oil to leak from the threaded connection. This not only wastes hydraulic oil but may also cause environmental pollution, and in extreme cases, the leaking hydraulic oil may cause a fire or explosion.
[0004] Therefore, it is necessary to design a cartridge valve with anti-leakage function to solve the above-mentioned technical problems. Utility Model Content
[0005] In order to overcome the disadvantages of poor fit between cartridge valve and valve block caused by thread machining errors, which may lead to hydraulic oil leakage, waste and pollution, and in extreme cases, fire or explosion, the technical problem of this utility model is to provide a cartridge valve with anti-leakage function.
[0006] The technical solution of this utility model is as follows: a cartridge valve with anti-leakage function, including a valve sleeve, a valve core, a sealing ring and a first elastic element. The valve core is slidably connected inside the valve sleeve. An inlet hole is opened at the bottom of the valve sleeve. Multiple through holes are opened in a ring array at the lower part of the valve sleeve. The multiple through holes are connected and communicate with the inlet hole. A sealing ring is fixedly sleeved on the lower part of the valve sleeve. A first elastic element is connected between the valve sleeve and the valve core. It also includes an anti-leakage shell and a sealing gasket. An anti-leakage shell is fixedly connected to the upper part of the valve sleeve. A sealing gasket is fixedly connected to the bottom of the anti-leakage shell and is fixedly sleeved on the valve sleeve.
[0007] Furthermore, a threaded groove is provided on the lower part of the valve sleeve.
[0008] Furthermore, both the sealing ring and the sealing gasket are made of silicone.
[0009] Furthermore, the diameter of the bottom surface of the valve core is larger than the diameter of the inlet hole.
[0010] Furthermore, it also includes guide posts, barrier ring plates, and second elastic elements. Multiple guide posts are fixedly connected in a ring array on the leak-proof shell. A barrier ring plate is slidably sleeved between each guide post. The barrier ring plate is slidably connected to the leak-proof shell. A second elastic element is connected between each guide post and the barrier ring plate, and each second elastic element is wound around the corresponding guide post.
[0011] Furthermore, it also includes fixing plates, humidity alarms, monitoring rods, and sponge gaskets. Fixing plates are symmetrically fixed to both sides of the outer wall of the leakproof shell. Humidity alarms are fixedly connected between the middle of the two fixing plates on both sides. Both humidity alarms are fixedly connected to the leakproof shell. Monitoring rods are symmetrically fixedly connected to the two humidity alarms. Sponge gaskets are fixedly connected between the four fixing plates, and one end of each monitoring rod is fixedly connected to the sponge gasket.
[0012] The present invention has the following advantages: 1. The present invention installs the cartridge valve onto the valve block through the threaded groove, and the sealing ring and sealing gasket enhance the sealing performance. When the device is running, the hydraulic oil pushes the valve core upward and flows out through the through hole; when closed, the valve core moves downward to close the inlet hole, ensuring tight contact, which significantly improves the sealing performance and operational reliability of the cartridge valve, reduces maintenance requirements, and effectively prevents safety hazards and environmental pollution problems that may be caused by leakage.
[0013] 2. This utility model enhances the sealing effect by moving the barrier ring plate upward and compressing the second elastic element, and by using the restoring force of the second elastic element to maintain the pre-tightening force on the guide column, thus greatly improving the overall sealing performance of the cartridge valve and ensuring the safe and reliable operation of the device.
[0014] 3. This utility model uses a humidity alarm and a sponge gasket. If a leak occurs, the hydraulic oil will seep to the outside of the valve block and be absorbed by the sponge gasket. The humidity alarm will detect this through the monitoring rod and immediately issue an alarm to remind the operator to deal with it in time, avoid potential safety hazards such as fire or explosion, and ensure the safe operation of the device. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a front view of the sealing ring, leak-proof shell, and sealing gasket components of this utility model.
[0017] Figure 3 This is a three-dimensional structural diagram of the guide post, barrier ring plate, and second elastic element of this utility model.
[0018] Figure 4This is a three-dimensional structural diagram of the components of this utility model, including the fixing plate, humidity alarm, and monitoring rod. The markings in the attached diagram are: 1: valve sleeve, 2: valve core, 3: liquid inlet, 4: through hole, 5: sealing ring, 6: leak-proof shell, 7: sealing gasket, 8: first elastic element, 9: guide post, 10: barrier ring plate, 11: second elastic element, 12: fixing plate, 13: humidity alarm, 14: monitoring rod, 15: sponge gasket. Detailed Implementation
[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0020] Example: A cartridge valve with leak-proof function, such as Figures 1-4 As shown, the device includes a valve sleeve 1, a valve core 2, a sealing ring 5, a leak-proof shell 6, a sealing gasket 7, and a first elastic element 8. The valve sleeve 1 has a threaded groove on its outside. The valve core 2 is slidably connected inside the valve sleeve 1. The bottom diameter of the valve core 2 is larger than the diameter of the liquid inlet hole 3. The bottom of the valve sleeve 1 has a liquid inlet hole 3. The lower part of the valve sleeve 1 has multiple through holes 4 arranged in a ring array. All through holes 4 are connected to and communicate with the liquid inlet hole 3. The sealing ring 5, made of silicone, is glued to the lower part of the valve sleeve 1. The leak-proof shell 6, made of silicone, is glued to the upper part of the valve sleeve 1. The bottom of the leak-proof shell 6 has a sealing gasket 7, also made of silicone, glued to the valve sleeve 1. The first elastic element 8 connects the valve sleeve 1 and the valve core 2.
[0021] like Figure 1 and Figure 3 As shown, it also includes guide posts 9, barrier ring plates 10, and second elastic elements 11. Multiple guide posts 9 are fused together in a ring array on the leak-proof shell 6. A barrier ring plate 10 is slidably sleeved between each guide post 9. The barrier ring plate 10 is slidably connected to the leak-proof shell 6. A second elastic element 11 is connected between each guide post 9 and the barrier ring plate 10, and each second elastic element 11 is wound around the corresponding guide post 9.
[0022] like Figure 1 and Figure 4As shown, it also includes a fixing plate 12, a humidity alarm 13, a monitoring rod 14, and a sponge gasket 15. The front and rear sides of the outer wall of the leakproof shell 6 are symmetrically welded with fixing plates 12. The humidity alarm 13 is installed between the middle of the two fixing plates 12 on the front and rear sides by screws. The two humidity alarms 13 are installed with the leakproof shell 6 by screws. The two humidity alarms 13 are symmetrically installed with monitoring rods 14 by screws. The four fixing plates 12 are glued together with sponge gaskets 15, and the end of each monitoring rod 14 away from the corresponding humidity alarm 13 is snapped onto the sponge gasket 15.
[0023] The operator securely installs the cartridge valve onto the valve block via the threaded groove on the outside of the valve sleeve 1. At this time, the sealing ring 5 is in close contact with the inside of the valve block, preventing hydraulic oil from directly entering the oil outlet of the valve block. Simultaneously, the top surface of the valve block contacts the barrier ring plate 10 and the sponge gasket 15, squeezing the barrier ring plate 10 upward and compressing the second elastic element 11. Due to the rebound force applied by the second elastic element 11, the barrier ring plate 10 can maintain an appropriate preload on the guide post 9, thereby enhancing the sealing effect between the valve block and the cartridge valve. When the threaded groove on the outside of the valve sleeve 1 is tightened to its limit, the sealing gasket 7 contacts the valve block, further improving the sealing performance. When the device is running, hydraulic oil flows into the valve sleeve 1 through the inlet hole 3. Under the action of internal pressure, the hydraulic oil pushes the valve core 2 upward, causing the first elastic element 8 to be compressed. At this time, multiple through holes 4 are all connected to the inlet hole 3. Hydraulic oil flows out through multiple through holes 4 and is eventually distributed through the oil outlet holes on the valve block. If leakage occurs during this process, the hydraulic oil will seep out to the outside of the valve block and be absorbed by the sponge gasket 15. After the humidity alarm 13 detects the presence of hydraulic oil through the monitoring rod 14, it will immediately issue an alarm to remind the operator to deal with it in time. When the device needs to be shut down or the flow needs to be stopped, as the internal pressure decreases, the valve core 2 will move downward under the restoring force of the first elastic element 8 and return to the initial position, so that the inlet hole 3 and the through hole 4 are closed. The first elastic element 8 resets to ensure tight contact between the valve core 2 and the valve sleeve 1, preventing any liquid flow, thereby maintaining the sealing and safety of the system. When the cartridge valve is disassembled from the valve block, the valve sleeve 1 rotates and slowly separates from the valve block. At this time, the blocking ring plate 10 moves downward to its original position under the force of the second elastic element 11.
[0024] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims
1. An insertion valve with anti-leakage function, comprising a valve sleeve (1), a valve core (2), a sealing ring (5) and a first elastic member (8), the valve core (2) is slidably connected inside the valve sleeve (1), a liquid inlet hole (3) is arranged at the bottom of the valve sleeve (1), a plurality of through holes (4) are arranged in an annular array at the lower part of the valve sleeve (1), the plurality of through holes (4) are connected and communicated with the liquid inlet hole (3), the sealing ring (5) is fixedly sleeved at the lower part of the valve sleeve (1), and the first elastic member (8) is connected between the valve sleeve (1) and the valve core (2), characterized in that: The anti-leakage shell (6) is fixedly connected to the upper portion of the valve sleeve (1), the bottom of the anti-leakage shell (6) is fixedly connected with a sealing gasket (7), and the sealing gasket (7) is fixedly sleeved on the valve sleeve (1). 2. The insertion valve with a leak-proof function according to claim 1, characterized in that: The lower portion of the valve sleeve (1) is provided with a threaded groove.
3. The insertion valve with a leak-proof function according to claim 2, characterized in that: The sealing ring (5) and the sealing gasket (7) are both made of silica gel.
4. The insertion valve with a leak-proof function according to claim 3, characterized in that: The diameter of the bottom surface of the valve core (2) is greater than the diameter of the liquid inlet hole (3).
5. The insertion valve with a leak-proof function according to claim 4, characterized in that: The anti-leakage shell (6) is fixedly connected with a plurality of guide columns (9) in an annular array, a barrier ring plate (10) is slidingly sleeved between each guide column (9), the barrier ring plate (10) is slidingly connected with the anti-leakage shell (6), and a second elastic member (11) is connected between each guide column (9) and the barrier ring plate (10), and each second elastic member (11) is wound around the corresponding guide column (9).
6. The insertion valve with a leak-proof function according to claim 5, characterized in that: The anti-leakage shell (6) is fixedly connected with a plurality of guide columns (9) in an annular array, a barrier ring plate (10) is slidingly sleeved between each guide column (9), the barrier ring plate (10) is slidingly connected with the anti-leakage shell (6), and a second elastic member (11) is connected between each guide column (9) and the barrier ring plate (10), and each second elastic member (11) is wound around the corresponding guide column (9). The anti-leakage shell (6) is fixedly connected with a plurality of guide columns (9) in an annular array, a barrier ring plate (10) is slidingly sleeved between each guide column (9), the barrier ring plate (10) is slidingly connected with the anti-leakage shell (6), and a second elastic member (11) is connected between each guide column (9) and the barrier ring plate (10), and each second elastic member (11) is wound around the corresponding guide column (9).