Non-contact multi-path switching valve with supply path and return path

Abstract

The non-contact type multi-way switching valve comprises a valve body and a control device, the valve body is provided with a cavity used for containing a sliding assembly, the control device comprises a groove body and a plurality of elastic elements arranged in the groove body, and the elastic elements are used for controlling connection and disconnection of a pipeline through deformation. The stepping motion of the sliding block is achieved, the sliding block moves to drive the ejector rod to stretch out and retract back, and the ejector rod further drives the pressing structure of the hose to achieve connection and disconnection of the pipeline.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a contactless multi-way switching valve with a supply and return dual path. Background Art

[0002] Filling or testing systems in the medical and chemical industries often require the addition of solutions into designated containers as needed. These containers are numerous, and the test media have demanding environmental requirements, some of which are even corrosive. Using conventional solenoid valves typically results in a very large system and complex wiring.

[0003] In response to the above needs, an integrated multi-channel switching valve has appeared on the market in recent years. This type of switching valve usually allows a small number of channels (currently generally supports up to 16 channels) and requires the test medium to enter the interior of the switching valve, making internal cleaning inconvenient. Summary of the Invention

[0004] First, the present application provides a non-contact multi-way switching valve with a supply and return dual path, including a valve body and a control device, wherein the valve body is provided with a cavity for accommodating a sliding assembly, and the control device includes a groove body and a plurality of elastic elements arranged in the groove body, and the elastic elements are used to control the on-off of the pipeline by deformation.

[0005] Preferably, the tank body is further provided with a movable push rod, which controls the on-off of the pipeline by changing the shape of the elastic element. This design makes the on-off control of the pipeline more flexible and reliable, and the pipeline can be quickly switched by moving the push rod. Preferably, the movement of the push rod is driven by a sliding assembly in the valve body. The introduction of the sliding assembly further improves the automation level of the switching valve and makes the movement of the push rod more precise and controllable.

[0006] Preferably, the sliding assembly includes a lead screw slide and a lead screw nut matched therewith, and the movement of the lead screw nut drives the push rod to move. This structure is not only simple and practical, but also has high transmission efficiency and stability, thereby ensuring long-term stable operation of the switching valve.

[0007] Preferably, the tank body is provided with holes for passing the pipelines, and each elastic element corresponds to at least one hole. This design makes the layout of the pipelines more compact and reasonable, and also facilitates the installation and removal of the pipelines.

[0008] Preferably, the control device further comprises a baffle for limiting the position of the elastic element. The presence of the baffle effectively prevents the elastic element from being displaced during the deformation process, thereby ensuring the stability and safety of the switching valve.

[0009] Preferably, the valve body includes a cover plate for covering the sliding assembly. The cover plate not only plays a protective role, but also prevents foreign matter from entering the sliding cavity, thereby ensuring the normal operation of the sliding assembly.

[0010] Preferably, a top plate is provided on one side of the tank body, and a through hole is provided on the top plate for the push rod to pass through. The existence of the top plate further improves the overall structural strength of the switching valve and also provides stable support for the movement of the push rod.

[0011] Preferably, the elastic element is a butterfly spring. The butterfly spring has high elasticity and fatigue resistance, and can ensure stable performance during long-term use.

[0012] In summary, the present invention has at least the following beneficial effects: 1. Since the present invention adopts a non-contact pipeline switching method, the pipeline is controlled by the deformation of the elastic element, thereby avoiding the wear and sealing problems of traditional mechanical contact switching valves, and improving the service life and reliability of the switching valve.

[0013] 2. In the present invention, a sliding assembly is preferably used to drive the movement of the ejector rod. Through the cooperation of the lead screw slide and the lead screw nut, precise control of the ejector rod is achieved, thereby improving the accuracy and efficiency of pipeline switching.

[0014] 3. The present invention further improves the stability and safety of the switching valve by introducing structures such as a baffle, a cover plate and a top plate, enabling it to operate stably in various complex environments and meet the diverse needs of practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure in the embodiment.

[0016] Figure 2 Schematic diagram highlighting the internal structure of the sliding cavity in the embodiment.

[0017] Figure 3 It is a schematic diagram highlighting the matching relationship between the butterfly spring and the hose in the embodiment.

[0018] Figure 4 2 is a schematic diagram of the ejector structure in the embodiment.

[0019] Figure 5 It is an exploded view highlighting the internal structure of the tank body in the embodiment.

[0020] Figure 6 yes Figure 5 Enlarged view of part A in the middle.

[0021] Figure 7 yes Figure 5 Enlarged view of part B in the middle.

[0022] Figure 8 It is a schematic diagram of another alternative structure in the embodiment.

[0023] Description of reference numerals: 1. Valve body; 11. Sliding cavity; 12. Screw slide; 13. Screw nut; 14. Sliding block; 141. Chamfer; 15. Drive motor; 16. Cover plate; 2. Control device; 21. Trough body; 211. Slot; 22. Butterfly spring; 23. Pipe hole; 231. Hose; 24. Push rod; 241. Mounting slot; 25. Baffle; 3. Top plate; 31. Through hole; 32. Sleeve; 33. Limiting slot; 4. Holding strip; 5. Compression spring. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-8 This application is described in further detail.

[0025] The embodiment of the present application discloses a non-contact multi-way switching valve with a supply and return dual path. Figure 1 The switching valve includes a rectangular valve body 1 and a control device 2 arranged on one side of the valve body 1; the number of the control device 2 is at least one, and in this embodiment there are two, and the two control devices 2 are symmetrically arranged on both sides of the valve body 1, and the control device 2 can control the on and off of the pipeline.

[0026] Reference Figure 2 and Figure 3 The control device 2 includes a long, rectangular trough 21 and a plurality of butterfly springs 22 disposed within the trough 21. The overall width of the trough 21 is the same as the thickness of the valve body 1. The butterfly springs 22 are evenly distributed along the length of the trough 21. The trough 21 is provided with a plurality of tube holes 23, with each pair of tube holes 23 forming a group. Each pair of tube holes 23 is provided with a rubber hose 231, one serving as a liquid inlet and the other as a liquid outlet. Under normal conditions, the rubber hoses 231 are compressed and sealed by the butterfly springs 22, and the pipeline is now closed.

[0027] The pipe hole 23 is formed by a groove formed in the tank body 21 and the valve body 1. The groove is formed on the side of the tank body 21 closest to the valve body 1. The groove extends along the width of the tank body 21. When the tank body 21 is installed on the valve body 1, the groove and the side wall of the valve body 1 form the pipe hole 23. The groove and the valve body 1 form the pipe hole 23, which facilitates the removal and installation of the hose 231.

[0028] A push rod 24 is also provided in the groove body 21 to drive the butterfly spring 22 to deform. The push rod 24 can move up and down. When the push rod 24 moves away from the valve body 1, the push rod 24 can drive the butterfly spring 22 to deform. At this time, the butterfly spring 22 no longer applies pressure to the hose 231, and the interior of the hose 231 can be connected, so that liquid can flow in the hose 231, thereby connecting the pipeline. When the push rod 24 moves closer to the valve body 1, the butterfly spring 22 returns to its original shape, and the butterfly spring 22 applies pressure to the hose 231 again, flattening the hose 231, and the pipeline is now closed.

[0029] The valve body 1 is hollow inside, so that a sliding cavity 11 is formed inside the valve body 1, and the sliding cavity 11 extends along the length direction of the valve body 1; a screw slide 12 is arranged inside the sliding cavity 11, and the two ends of the screw slide 12 are rotatably connected to the end of the sliding cavity 11, so that the screw slide 12 can rotate along its own axis, and a screw nut 13 is sleeved on the screw slide 12 and matched with its thread, and the screw nut 13 is also connected to the sliding block 14, and the rotation of the screw slide 12 can drive the sliding block 14 to move along the length direction of the screw slide 12, and the end of the push rod 24 protrudes from the surface of the sliding cavity 11. The movement of the sliding block 14 can push the push rod 24 to move in the direction away from the valve body 1. When the sliding block 14 no longer applies force to the push rod 24, the butterfly spring 22 will drive the push rod 24 to return to its original position, thereby achieving the purpose of driving the push rod 24 to reciprocate.

[0030] A drive motor 15 is installed at one end of the valve body 1, and the drive motor 15 can drive the screw slide 12 to rotate along its own axis; the screw slide 12 can also adopt a single-rotation reciprocating screw, which does not require the screw slide 12 to reverse, and can drive the sliding block 14 to move repeatedly in the sliding cavity 11.

[0031] The end of the push rod 24 protruding into the sliding cavity 11 is spherical, and the edges at both ends of the sliding block 14 in the direction of travel are opened at chamfers 141. With the cooperation of the spherical end and the chamfer 141, the sliding block 14 can drive the push rod 24 to move, and can also avoid mutual interference between the push rod 24 and the sliding block 14.

[0032] A cover plate 16 is also installed on the side wall of the valve body 1 (refer to Figure 1 ), the cover plate 16 can cover the sliding cavity 11 to prevent foreign matter from entering the sliding cavity 11 and affecting the sliding of the sliding block 14.

[0033] Reference Figure 4 and Figure 5A mounting groove 241 is provided at one end of the push rod 24 away from the valve body 1. The mounting groove 241 extends along the length direction of the push rod 24. The butterfly spring 22 is located in the mounting groove 241, so that the butterfly spring 22 is installed on the push rod 24, so that the butterfly spring 22 can be deformed as the push rod 24 moves.

[0034] The tank body 21 is further provided with a plurality of baffles 25 located between adjacent push rods 24. The baffles 25 can block the butterfly springs 22 and prevent displacement during deformation. Slots 211 for the baffles 25 are provided on the sidewalls of the tank body 21, facilitating insertion and replacement of the baffles 25.

[0035] A top plate 3 is provided on the side of the trough body 21 away from the valve body 1. The top plate 3 can cover the trough body 21, and a through hole 31 is opened on the top plate 3 for the end of the push rod 24 to pass through. A sleeve 32 is also installed in the through hole 31. The end of the push rod 24 moves in the sleeve 32. Due to the presence of the sleeve 32, the wear between the push rod 24 and the through hole 31 can be reduced. It only needs to replace the sleeve 32 regularly, which can improve the service life of the switching valve.

[0036] Reference Figure 6 A limiting groove 33 is opened on one side of the top plate 3 close to the groove body 21. The limiting groove 33 is opened along the length direction of the top plate 3. The butterfly spring 22 is in the limiting groove 33. The limiting groove 33 can further limit the butterfly spring 22 to prevent displacement during the deformation process of the butterfly spring 22.

[0037] Reference Figure 7 In the present invention, the butterfly spring 22 can also be replaced by a compression spring 5 and a compression strip 4 to achieve the compression of the pipeline.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A non-contact multi-way switching valve with a supply and return dual path, It is characterized in that It comprises a valve body and a control device, wherein the valve body is provided with a cavity for accommodating a sliding component, and the control device comprises a groove body and a plurality of elastic elements arranged in the groove body, wherein the elastic elements are used to control the on-off of the pipeline by deformation.

2. The switching valve according to claim 1, It is characterized in that The tank body is also provided with a movable push rod, which controls the on-off of the pipeline by changing the shape of the elastic element.

3. The switching valve according to claim 2, It is characterized in that The movement of the push rod is driven by a sliding assembly in the valve body.

4. The switching valve according to claim 3, It is characterized in that The sliding assembly comprises a lead screw slide bar and a sliding block matched therewith. The sliding block can slide along the lead screw to make reciprocating motion, and the movement of the sliding block drives the push rod to move.

5. The switching valve according to claim 1, It is characterized in that The trough body is provided with holes for passing pipelines, and each elastic element corresponds to at least one hole.

6. The switching valve according to claim 1, It is characterized in that The control device further comprises a baffle plate for limiting the position of the elastic element.

7. The switching valve according to claim 1, It is characterized in that The valve body comprises a cover plate for covering the sliding assembly.

8. The switching valve according to claim 1, It is characterized in that A top plate is provided on one side of the trough body, and a through hole is provided on the top plate for the top rod to pass through.

9. The switching valve according to any one of claims 1 to 8, It is characterized in that The elastic element is a butterfly spring.

10. The switching valve according to claim 1, It is characterized in that The structural configuration of the valve body and the control device enables the pipeline to achieve multi-way switching under non-contact control.

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