Pinch valve
By using a rigid plastic tube and an electromagnetic drive mechanism, the problem of existing clamp valves being prone to breakage under high pressure is solved, achieving the effect of not being prone to breakage under high pressure and having small size and low power consumption.
Patent Information
- Application Number
- CN202520221752.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing pinch valves, due to the use of soft silicone tubing, suffer from pressure resistance limitations caused by high pressure, which are inherently limited by the tubing wall thickness. This is a technical problem that existing technologies struggle to solve.
It uses a plastic rigid tube, a plastic rigid tube, and a plastic rigid tube with a thicker wall. A first part with a thinner wall is set on the plastic rigid tube. The elasticity of the plastic is used to achieve deformation and reset. The extrusion part is driven to move by an electromagnetic drive mechanism to control the fluid channel.
This design makes the valve less prone to breakage under high-pressure loads, reducing load requirements and decreasing the size and power of the pinch valve.
Smart Images
Figure CN223690384U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a pinch valve. BACKGROUND
[0002] The pinch valve is a kind of flow control valve, and generally uses silica gel pipe or the like pipe, realizes the control to fluid by compressing and opening pipe.Because using is soft pipe, so the maximum pressure resistance of valve is around the strength of pipe.In order to improve the pressure resistance of pipe, thickening pipe wall thickness or improving pipe hardness, so the force of compressing pipe will increase, and therefore the pinch valve needs to be large. CONTENT
[0003] In order to overcome the above-mentioned shortcomings, the utility model discloses a kind of pinch valve, utilize the elasticity of plastic itself to realize its deformation and reset, and plastic hard pipe strength is big, and it is not easy to break when high pressure load.
[0004] In order to achieve the above purpose, the utility model adopts the technical scheme that a kind of pinch valve, comprising:
[0005] Pipe seat, first passageway and second passageway that are perpendicular to each other and are communicated are formed in the pipe seat;
[0006] Plastic hard pipe, the plastic hard pipe is fixed in the first passageway, a fluid passageway is formed in the plastic hard pipe along the axial direction, the plastic hard pipe includes first part and second part, the pipe wall thickness of the first part is less than the pipe wall thickness of the second part, and the position of the first part corresponds to the second passageway;
[0007] Extrusion piece, the extrusion piece can slide along the second passageway to extrude the first part, and the extrusion piece can open or close the fluid passageway at the first part during movement.
[0008] The utility model has the advantages that:
[0009] Utilize the elasticity of plastic itself to realize its deformation and reset, and plastic hard pipe strength is big.
[0010] First part with thinner wall thickness is arranged on plastic hard pipe, only the wall thickness of first part is thinned, required load is reduced, and first part can be deformed by smaller force.Wall-thin first part is supported by extrusion piece and pipe seat, and is not easy to break under high pressure load.
[0011] Further, the first part is a groove formed in the outer wall of the plastic hard pipe along the circumferential direction of the plastic hard pipe and inward, the plastic hard pipe is an integral structure, the first part is formed by grooving on the plastic hard pipe, and the first part is convenient to process.The side wall of the groove and the groove bottom are rounded corner structure, the rounded corner structure is more uniform in stress, and breakage at the groove bottom and the side wall of the groove is avoided.
[0012] Further, the first channel is fixed with a boss, and the boss can be embedded in the groove. The boss supports the first part with thin wall thickness, and the pipe is not easy to break under high pressure load
[0013] Further, the boss extrudes the inner wall of the first part against which the boss abuts to coincide with the axis of the fluid channel. In this way, the part of the first part in contact with the extrusion member moves a small distance to achieve the closure of the fluid channel, and the force on the first part is more uniform.
[0014] Further, the first channel and the second channel form a T-shaped structure, and the first part is located at the middle position of the plastic hard pipe. The T-shaped structure can provide stable support for the second part by the first channel, improve the stability of the plastic hard pipe fixation, and also uniformly transfer the received force to the second part when the force is applied on the first part.
[0015] Further, the material of the plastic hard pipe is PTFE or PFA, which has strong corrosion resistance.
[0016] Further, the extrusion member is a rubber pad, and the end of the extrusion member is a circular arc part which can abut against the first part. The rubber pad has elasticity and is in elastic contact with the first part to avoid damage to the first part.
[0017] Further, the pinch valve further comprises an electromagnetic driving mechanism for driving the extrusion member to move.
[0018] The electromagnetic driving mechanism comprises a housing, the pipe seat is fixed with the housing, and the housing is sequentially provided with a movable iron core, a spring and a fixed iron core from close to the pipe seat to away from the pipe seat, and the end of the movable iron core penetrates out of the housing and is fixedly connected with the extrusion member.
[0019] Further, the movable iron core and the extrusion member are interference-fitted.
[0020] Further, the spring pushes the movable iron core to move towards the pipe seat, so that the extrusion member is pressed against the first part and closes the fluid channel at the first part. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure schematic view and a local enlarged view of the embodiment of the utility model;
[0022] Figure 2 It is a sectional view and a local enlarged view of the plastic hard pipe in the embodiment of the utility model;
[0023] Figure 3 It is a structure schematic view of the pipe seat in the embodiment of the utility model.
[0024] Fig.:
[0025] 1, pipe seat; 11, first channel; 111, boss; 12, second channel;
[0026] 2, plastic rigid pipe; 21, first part; 211, fillet structure; 22, second part; 23, fluid channel;
[0027] 3, extrusion piece;
[0028] 41, shell; 42, movable core; 43, spring; 44, fixed core; 45, electromagnet. DETAILED DESCRIPTION
[0029] The advantages and features of the present application will be more easily understood by those skilled in the art from the following detailed description of the preferred embodiments of the present application, with reference to the accompanying drawings, so that the scope of protection of the present application can be more clearly defined.
[0030] Referring to the drawings Figure 1 The pipe seat 1 is used to fix the plastic rigid pipe 2, and the extrusion piece 3 is used to extrude the plastic rigid pipe 2 to open or close the fluid channel 23 of the plastic rigid pipe 2.
[0031] Referring to the drawings Figure 3 The pipe seat 1 is used to fix the plastic rigid pipe 2, and the extrusion piece 3 is used to extrude the plastic rigid pipe 2 to open or close the fluid channel 23 of the plastic rigid pipe 2. Figure 2 The plastic rigid pipe 2 is provided with a fluid channel 23 along the axial direction, and the plastic rigid pipe 2 includes a first part 21 and a second part 22. The thickness of the pipe wall of the first part 21 is smaller than that of the second part 22, and the position of the first part 21 corresponds to the second channel 12. The extrusion piece 3 can slide along the second channel 12 to extrude the first part 21, and the extrusion piece 3 can open or close the fluid channel 23 at the first part 21 during movement.
[0032] Compared with the soft pipe in the prior art, the plastic rigid pipe 2 is used in the present embodiment, and the deformation and reset of the plastic rigid pipe 2 are realized by using the elasticity of the plastic itself. Moreover, the plastic rigid pipe 2 has high strength. Furthermore, the first part 21 with a relatively thin pipe wall is arranged on the plastic rigid pipe 2, and only the wall thickness of the first part 21 is reduced, so that the required load is reduced, and a smaller force can be used to deform the first part 21. The first part 21 with a weak wall thickness is supported by the extrusion piece 3 and the pipe seat 1, and is not easy to break under high pressure load. The hard plastic rigid pipe 2 is used to realize the high pressure of the pinch valve, and the required load is reduced. Therefore, compared with the pinch valve in the prior art, the size is small, and the power is reduced.
[0033] Referring to the drawings Figure 3 As shown, the first channel 11 and the second channel 12 form a T-shaped structure, so the first part 21 is located in the middle of the plastic hard pipe 2, that is, the second part 22 is located on both sides of the first part 21. This T-shaped structure, the first channel 11 can provide stable support for the second part 22, improve the stability of the plastic hard pipe 2 fixed, and at the same time, when the first part 21 is stressed, it can also evenly transfer the received force to the second part 22.
[0034] In one embodiment, the first part 21 is a groove opened on the outer wall of the plastic hard pipe 2 along the circumferential direction of the plastic hard pipe 2 to the inside. The plastic hard pipe 2 is an integral structure, and the first part 21 is formed by opening a groove on the plastic hard pipe 2, and the other part of the plastic hard pipe 2 is the second part 22.
[0035] Referring to the drawings Figure 2 As shown, the side wall of the groove and the groove bottom are chamfered 211, and at this time, when the extrusion piece 3 pushes the first part 21 to deform, the chamfered structure 211 is more uniform in stress, avoiding the fracture of the groove bottom and the groove side wall.
[0036] The first channel 11 is fixed with a boss 111, which extends along the side wall of the first channel 11 to the inside, and the boss 111 is distributed along the circumferential direction. The boss 111 can be embedded in the groove. The boss 111 supports the first part 21 with thin wall thickness, and is not easy to break when under high pressure load. The cross section of the boss 111 is arc-shaped, so there is no sharp corner in contact with the first part 21, and the force applied to the first part 21 is more uniform, avoiding damage to the first part 21.
[0037] In one embodiment, the boss 111 extrudes the inner wall of the first part 21 abutting against it to coincide with the axis of the fluid channel 23. At this time, the part of the first part 21 in contact with the boss 111 will deform under the extrusion of the boss 111, so that the part of the first part 21 in contact with the extrusion piece 3 moves a small distance to achieve the closure of the fluid channel 23, and the stress on the first part 21 is more uniform.
[0038] In one embodiment, the material of the plastic hard pipe 2 is PTFE or PFA, which has strong corrosion resistance and can be used in more occasions.
[0039] Further, the extrusion piece 3 is a rubber pad, and the end of the extrusion piece 3 is a circular arc part, which can abut against the first part 21. The rubber pad has elasticity and elastically contacts the first part 21, avoiding damage to the first part 21.
[0040] The pinch valve further comprises an electromagnetic driving mechanism for driving the extrusion piece 3 to move.
[0041] Referring to the drawings Figure 1 As shown, the electromagnetic driving mechanism comprises a housing 41, the pipe base 1 is fixed with the housing 41, the housing 41 is sequentially provided with a movable iron core 42, a spring 43, a fixed iron core 44 and an electromagnet 45 from close to the pipe base 1 to far from the pipe base 1, the fixed iron core 44 is wound with a coil. The end of the movable iron core 42 penetrates through the housing 41 and is fixedly connected with the extruding piece 3. After the electromagnet 45 is electrified, the fixed iron core 44 and the movable iron core 42 are magnetized, the movable iron core 42 acts downward, and the fluid passage 23 of the plastic hard pipe 2 is opened. When the pipe is opened, it is opened along the circular arc part of the extruding piece 3, so the plastic hard pipe 2 is not easy to break.
[0042] The movable iron core 42 and the extruding piece 3 are interference-inserted, the extruding piece 3 is provided with an insertion slot, and the end of the movable iron core 42 is interference-inserted in the insertion slot. The movable iron core 42 and the extruding piece 3 are detachably connected, and the extruding piece 3 can be replaced according to the requirement.
[0043] The spring 43 pushes the movable iron core 42 to move towards the pipe base 1, so that the extruding piece 3 is pressed on the first part 21 and closes the fluid passage 23 at the first part 21. When the electromagnet 45 is not electrified, the spring 43 provides an acting force for the extruding piece to be pressed on the first part 21, and the fluid passage 23 is in a closed state.
[0044] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to let the person skilled in the art understand the content of the present application and implement it, and it cannot limit the protection scope of the present application, any equivalent change or modification according to the spirit and essence of the present application should be covered in the protection scope of the present application.
Claims
1. A clamp tube valve characterized by: The utility model relates to a clamp pipe valve, including: A pipe base is provided with a first channel and a second channel which are perpendicular to each other and are in communication; A plastic hard pipe is fixed in the first channel, the plastic hard pipe is provided with a fluid channel along the axial direction, the plastic hard pipe comprises a first part and a second part, the thickness of the pipe wall of the first part is smaller than that of the second part, and the first part corresponds to the second channel; An extrusion piece can slide along the second channel to extrude the first part, and the extrusion piece can open or close the fluid channel at the first part during movement.
2. The clamp valve of claim 1, wherein: The first part is a groove provided on the outer wall of the plastic hard pipe along the circumferential direction of the plastic hard pipe and inwardly, and the side wall of the groove and the groove bottom are chamfered.
3. The clamp valve of claim 2, wherein: A boss is fixed in the first channel, and the boss can be embedded in the groove.
4. The clamp valve of claim 3, wherein: The inner wall of the first part abutting against the boss is extruded to coincide with the axis of the fluid channel.
5. The pinch valve of claim 1, wherein: The first channel and the second channel form a T-shaped structure, and the first part is located at the middle position of the plastic hard pipe.
6. The pinch valve of claim 1, wherein: The material of the plastic hard pipe is PTFE or PFA.
7. The pinch valve of claim 1, wherein: The extrusion piece is a rubber pad, the end of the extrusion piece is a circular arc part, and the circular arc part can abut against the first part.
8. The clamp valve according to any one of claims 1 to 7, characterized in that: The clamp pipe valve further comprises an electromagnetic driving mechanism for driving the movement of the extrusion piece. The electromagnetic driving mechanism comprises a shell, the pipe base is fixed with the shell, the shell is sequentially provided with a movable iron core, a spring and a fixed iron core from close to the pipe base to away from the pipe base, the end of the movable iron core penetrates out of the shell and is fixedly connected with the extrusion piece.
9. The pinch valve of claim 8, wherein: The movable iron core and the extrusion piece are interference-fitted.
10. The clamp valve of claim 8, wherein: The spring pushes the movable iron core to move towards the pipe base, so that the extrusion piece is pressed against the first part and closes the fluid channel at the first part.