Built-in one-way valve
By designing limit and blocking components, the problem of untimely rebound response of built-in check valves in hydraulic equipment is solved, realizing precise control and rapid response of unidirectional liquid flow, and improving the working efficiency and safety of the equipment.
Patent Information
- Application Number
- CN202520127344.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing built-in check valves in hydraulic equipment suffer from untimely rebound response due to unreasonable elastic coefficient of the rebound component and excessive friction of moving parts, which easily leads to backflow and affects the working efficiency and safety of the equipment.
The design employs limiting and blocking components, including a fixed outer ring, liquid blocking plate, sliding block, damping spring, and rolling wheel. Through the cooperation of the sliding block and the lifting slot, the liquid blocking plate can be precisely controlled and respond quickly to prevent backflow.
It effectively prevents liquid backflow, ensures the normal operation of the check valve, improves the stability and safety of the hydraulic system, and extends the service life of the equipment.
Smart Images
Figure CN223648181U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of one-way valve technology, and in particular to a built-in one-way valve. Background Technology
[0002] In the field of hydraulic equipment, built-in check valves play a crucial role. They ensure that the oil flows in only one direction in the system, prevent backflow, maintain stable system pressure, protect the equipment from reverse pressure shocks, ensure normal operation of the equipment, improve the reliability and safety of the hydraulic system, reduce the risk of failure, and extend the service life of the equipment.
[0003] However, in actual use, existing built-in check valves, due to limitations in their internal structural design such as unreasonable elastic coefficient of the rebound component and excessive friction between moving parts, cannot respond to changes in liquid pressure. This leads to backflow within the valve, which not only reduces the working efficiency of the check valve but may also seriously threaten the stability and safety of the entire hydraulic system, affecting the normal operation and service life of the equipment.
[0004] Therefore, this application provides a built-in check valve to meet the requirements. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a built-in one-way valve.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a built-in one-way valve, comprising:
[0007] Hydraulic pipe and the connecting outer ring placed inside the hydraulic pipe;
[0008] A limiting component is placed inside a connecting outer ring. The limiting component includes a fixed outer ring fixed inside the connecting outer ring. A first connecting rod is fixed to the bottom of each fixed outer ring. A bottom ring is fixed to the bottom of each first connecting rod. A second connecting rod is fixed inside the bottom ring. A blocking ring is fixed to the other end of the second connecting rod. A liquid inlet groove is opened at the top of the fixed outer ring. A lifting groove is opened on the side of the fixed outer ring away from the liquid inlet groove.
[0009] A blocking assembly is placed inside a limiting assembly. The connecting outer ring includes a liquid-blocking plate that is snapped into the inside of a fixed outer ring. A sliding block is fixed to the outside of the liquid-blocking plate. A slot is provided on the outside of the sliding block. A first damping spring is provided on the sliding block through the slot. A rolling wheel is fixed to the other end of the first damping spring.
[0010] Furthermore, a positioning rod is fixed to the bottom of the liquid-blocking plate, and a second damping spring is sleeved on the positioning rod.
[0011] The beneficial effect of adopting the above-mentioned further solution is that the positioning rod at the bottom of the liquid blocking plate cooperates with the sleeved second damping spring to help the liquid blocking plate reset when the liquid flows in the opposite direction, thus preventing backflow.
[0012] Furthermore, the positioning rod is slidably connected to the blocking ring.
[0013] The beneficial effects of adopting the above-mentioned further solution are: the positioning rod and the barrier ring are slidably connected, which restricts the movement direction of the liquid blocking plate and enhances the anti-backflow effect.
[0014] Furthermore, an arc-shaped plate is fixed to the top of the liquid-blocking plate.
[0015] The beneficial effect of adopting the above-mentioned further solution is that the arc-shaped plate at the top of the liquid blocking plate can guide the liquid to pass through the check valve more smoothly when the liquid flows in the forward direction.
[0016] Furthermore, the sliding block on the outer side of the liquid-blocking plate engages with the lifting slot on the inner side of the fixed outer ring.
[0017] The beneficial effect of adopting the above-mentioned further solution is that the sliding block on the outside of the liquid blocking plate is engaged with the lifting slot on the inside of the fixed outer ring. When the liquid flows, it drives the liquid blocking plate to rise and fall along the slot, accurately controlling the opening and closing, and ensuring the normal operation of the one-way valve.
[0018] Furthermore, a spring is provided inside the lifting slot, and the top of the spring is connected to the sliding block.
[0019] The beneficial effects of adopting the above-mentioned further solution are: the sliding block moves within the lifting slot of the fixed outer ring, the spring is connected to the sliding block, and the spring assists the sliding block to reset through its own elasticity, ensuring that the liquid blocking plate closes in time, effectively preventing liquid backflow, and maintaining the one-way conduction function of the one-way valve.
[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0021] 1. The first connecting rod extends from the bottom of the fixed outer ring, and the bottom ring is fixed at its lower end. This structure enhances the overall stability. The bottom ring is connected to the blocking ring through the second connecting rod. The blocking ring can block and limit the second damping spring. The liquid inlet slot at the top of the fixed outer ring is the channel for liquid to enter. On the side away from the liquid inlet slot, there is a lifting slot, which provides space for the lifting and moving of the blocking component.
[0022] 2. The liquid blocking plate is snapped into the fixed outer ring, which is the key to blocking the backflow of liquid. The sliding block on the outside of the liquid blocking plate cooperates with the lifting slot of the fixed outer ring to realize the up and down movement of the liquid blocking plate. The first damping spring and rolling wheel on the sliding block can reduce the friction when the sliding block moves. When the liquid flows in reverse, the liquid blocking plate blocks the channel under the action of these components to prevent backflow. Attached Figure Description
[0023] Figure 1 This is a front view of a built-in one-way valve according to this utility model;
[0024] Figure 2 This is a cross-sectional view of a built-in one-way valve according to the present invention.
[0025] Figure 3 This is a structural diagram of a limiting component in a built-in one-way valve according to this utility model;
[0026] Figure 4 This is a structural diagram of the blocking component in a built-in one-way valve according to this utility model.
[0027] Attached Figure
[0028] 1. Hydraulic pipe; 2. Connecting outer ring;
[0029] 3. Limiting component; 31. Fixed outer ring; 32. First connecting rod; 33. Bottom ring; 34. Second connecting rod; 35. Barrier ring; 36. Liquid entry groove; 37. Lifting groove; 38. Spring piece;
[0030] 4. Blocking assembly; 41. Liquid blocking plate; 42. Arc plate; 43. Sliding block; 44. Rolling wheel; 45. First damping spring; 46. Second damping spring; 47. Positioning rod. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] like Figure 1 - Figure 4 As shown, this utility model provides a technical solution: a built-in check valve, including: a hydraulic pipe 1 and a connecting outer ring 2 placed inside the hydraulic pipe 1;
[0033] The limiting component 3 is located inside the connecting outer ring 2. The limiting component 3 includes a fixed outer ring 31 fixed inside the connecting outer ring 2. A first connecting rod 32 is fixed to the bottom of the fixed outer ring 31. A bottom ring 33 is fixed to the bottom of the first connecting rod 32. A second connecting rod 34 is fixed inside the bottom ring 33. A blocking ring 35 is fixed to the other end of the second connecting rod 34. A liquid inlet groove 36 is opened at the top of the fixed outer ring 31. A [missing information - likely a type of groove] is opened on the side of the fixed outer ring 31 away from the liquid inlet groove 36. The lifting slot 37 extends from the bottom of the fixed outer ring 31. The first connecting rod 32 is fixed at the bottom end of the bottom ring 33. This structure enhances the overall stability. The bottom ring 33 is connected to the blocking ring 35 through the second connecting rod 34. The blocking ring 35 can block and restrict the second damping spring 46. The liquid inlet slot 36 at the top of the fixed outer ring 31 is the channel for liquid to enter. The lifting slot 37 is provided on the side away from the liquid inlet slot 36, which provides space for the lifting and lowering movement of the blocking assembly 4.
[0034] The blocking component 4 is located inside the limiting component 3. The connecting outer ring 2 includes a liquid blocking plate 41 that is snapped into the inside of the fixed outer ring 31. A sliding block 43 is fixed on the outside of the liquid blocking plate 41. A slot is opened on the outside of the sliding block 43. A first damping spring 45 is set through the slot on the sliding block 43. A rolling wheel 44 is fixed to the other end of the first damping spring 45. The liquid blocking plate 41 is snapped into the fixed outer ring 31 and is the key to blocking the reverse flow of liquid. The sliding block 43 on the outside of the liquid blocking plate 41 cooperates with the lifting slot 37 of the fixed outer ring 31 to realize the up and down movement of the liquid blocking plate 41. The first damping spring 45 and the rolling wheel 44 on the sliding block 43 can reduce the friction when the sliding block 43 moves. When the liquid flows in reverse, the liquid blocking plate 41 blocks the channel under the action of these components to prevent backflow.
[0035] Furthermore, such as Figure 1 - Figure 4 As shown: A positioning rod 47 is fixed at the bottom of the liquid blocking plate 41, and a second damping spring 46 is sleeved on the positioning rod 47. The positioning rod 47 at the bottom of the liquid blocking plate 41 cooperates with the sleeved second damping spring 46 to help the liquid blocking plate 41 reset when the liquid flows in reverse and prevent backflow.
[0036] The above solutions still have the problem of difficulty in liquid introduction, such as... Figure 1 - Figure 2 As shown: In this solution, the sliding block 43 on the outer side of the liquid blocking plate 41 is engaged with the lifting slot 37 on the inner side of the fixed outer ring 31. When the liquid flows, it drives the liquid blocking plate 41 to move up and down along the slot, accurately controlling the opening and closing, and ensuring the normal operation of the one-way valve.
[0037] Working principle: such as Figure 1 - Figure 4 As shown, the first connecting rod 32 at the bottom of the fixed outer ring 31 is connected to the bottom ring 33 to form a support structure. The bottom ring 33 is connected to the blocking ring 35 via the second connecting rod 34. The blocking ring 35 restricts the extension range of the second damping spring 46 and cooperates with the positioning rod 47 at the bottom of the liquid blocking plate 41 to constrain the movement path of the liquid blocking plate 41 and enhance the reliability of backflow prevention.
[0038] The liquid inlet groove 36 at the top of the fixed outer ring 31 guides the liquid to flow in, and the side lifting groove 37 provides space for the blocking component 4. The liquid blocking plate 41 is snapped into the fixed outer ring 31, and its outer sliding block 43 fits into the lifting groove 37. Under the liquid pressure, the liquid blocking plate 41 moves up and down to control the opening and closing of the valve. The first damping spring 45 and the rolling wheel 44 on the sliding block 43 reduce the moving friction, so that the liquid blocking plate 41 responds quickly and smoothly.
[0039] When the liquid flows in the forward direction, the arc-shaped plate 42 at the top of the liquid blocking plate 41 guides the flow, reducing resistance and energy loss. When the liquid flows in the reverse direction, the liquid blocking plate 41 is reset and blocks the backflow under the action of the second damping spring 46, the positioning rod 47 and the blocking ring 35. The spring piece 38 in the lifting slot 37 is connected to the sliding block 43, and the elastic force assists the sliding block 43 to return to its position, ensuring that the liquid blocking plate 41 closes quickly and accurately, maintaining the efficient one-way conduction performance of the check valve, ensuring the stable operation of the hydraulic system, and avoiding the failure and efficiency reduction problems caused by backflow.
[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A built-in check valve, characterized in that, include: Hydraulic pipe (1) and connecting outer ring (2) placed inside hydraulic pipe (1); The limiting component (3) is placed inside the connecting outer ring (2). The limiting component (3) includes a fixed outer ring (31) fixed inside the connecting outer ring (2). A first connecting rod (32) is fixed at the bottom of the fixed outer ring (31). A bottom ring (33) is fixed at the bottom of the first connecting rod (32). A second connecting rod (34) is fixed inside the bottom ring (33). A blocking ring (35) is fixed at the other end of the second connecting rod (34). A liquid inlet groove (36) is opened at the top of the fixed outer ring (31). A lifting groove (37) is opened on the side of the fixed outer ring (31) away from the liquid inlet groove (36). The blocking component (4) is placed inside the limiting component (3). The connecting outer ring (2) includes a liquid blocking plate (41) that is snapped into the inside of the fixed outer ring (31). A sliding block (43) is fixed on the outside of the liquid blocking plate (41). A slot is provided on the outside of the sliding block (43). A first damping spring (45) is provided on the sliding block (43) through the slot. A rolling wheel (44) is fixed on the other end of the first damping spring (45).
2. The built-in check valve according to claim 1, characterized in that, The bottom of the liquid blocking plate (41) is fixed with a positioning rod (47), and a second damping spring (46) is sleeved on the positioning rod (47).
3. A built-in check valve according to claim 2, characterized in that, The positioning rod (47) is slidably connected to the blocking ring (35).
4. A built-in check valve according to claim 1, characterized in that, An arc-shaped plate (42) is fixed to the top of the liquid blocking plate (41).
5. A built-in check valve according to claim 1, characterized in that, The sliding block (43) on the outside of the liquid blocking plate (41) engages with the lifting slot (37) on the inside of the fixed outer ring (31).
6. A built-in check valve according to claim 1, characterized in that, The lifting slot (37) is provided with a spring piece (38) inside, and the top of the spring piece (38) is connected to the sliding block (43).