CN218062613U - One-way valve pipeline structure and extrusion type peristaltic pump - Google Patents

Abstract

The embodiment of the specification discloses check valve pipeline structure and extrusion formula peristaltic pump, check valve pipeline structure includes: the hose, the one-way valve I and the one-way valve II; one end of the hose is connected with a first one-way valve, the other end of the hose is connected with a second one-way valve, the flowing directions of the first one-way valve and the second one-way valve are the same, and the connecting part of the first one-way valve and the second one-way valve and the hose is in a boss shape. The check valve pipeline structure that this scheme provided can be when not damaging the hose again can fixed the hose, improves the pumping precision.

Description

One-way valve pipeline structure and extrusion type peristaltic pump

Technical Field

The application relates to the technical field of fluid transmission, in particular to a one-way valve pipeline structure and an extrusion type peristaltic pump.

Background

In the technical scheme of the existing extrusion pump and even hose pump, in order to avoid axial movement of the hose in the pump, the technical scheme of clamping the hose mainly comprises clamping the hose by a pipe clamp or using a pipe sleeve to limit the hose, but the pipe clamping scheme needs to clamp the hose in a groove by a pipe clamping mechanism, so that the hose is easy to bend and deform, and the position outside the extrusion area of the hose is changed due to the change of an extrusion surface, so that the pumping precision of the extrusion pump is influenced. Although the pipe sleeve scheme does not have the risk of hose tortuous deformation, the pipe sleeve has the problem of difficult disassembly and assembly and is inconvenient to use, and a scheme which can not damage the hose but also can keep the hose fixed is required in the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the embodiments of the present specification are implemented as follows:

the embodiment of this specification provides a check valve pipeline structure, includes: the hose, the one-way valve I and the one-way valve II are connected with the hose; one end of the hose is connected with the first one-way valve, the other end of the hose is connected with the second one-way valve, the flowing directions of the first one-way valve and the second one-way valve are the same, and the connecting parts of the first one-way valve and the second one-way valve and the hose are in a boss shape.

Optionally, the one-way valve includes: diaphragm type check valves, spring type check valves or duckbill type check valves; the second one-way valve comprises: diaphragm type check valves, spring type check valves or duckbill type check valves.

Optionally, diaphragm formula check valve includes that the center of mutual lock is the valve casing one and the valve casing two of through-hole, valve casing one with the inner space that valve casing two formed is provided with the diaphragm the inside of valve casing two still is provided with the push jack, the push jack is followed the radial of valve casing two is arranged, the height of push jack is rised to the center by the edge gradually, the push jack is used for supporting the diaphragm.

Optionally, a minimum distance between the push piece and the valve casing is greater than the thickness of the diaphragm.

Optionally, the spring type check valve comprises a valve casing III and a valve casing IV, wherein the centers of the mutual buckling are through holes, a spring and a steel ball are arranged inside the valve casing IV, one end of the spring is abutted to the end face of the inner side of the valve casing IV, and the other end of the spring is in contact with the steel ball.

Optionally, a sealing ring is arranged between the third valve casing and the steel ball.

Optionally, the duckbill check valve comprises a valve housing five and a valve housing six which are buckled with each other and the center of which is a through hole, and the duckbill structure made of elastic material is arranged in an inner space formed by the valve housing five and the valve housing six.

Optionally, the center of duckbill structure is the through-hole, duckbill structure's one end is fixed the flange of five valve casings, and the other end is the mouth formula structure.

An embodiment of the present specification further provides an extrusion type peristaltic pump, including: the one-way valve pipeline structure is arranged between the extrusion driving structure and the cover plate, the extrusion driving structure is used for extruding the hose, the pipe clamp mechanisms are fixedly arranged at two ends of the cover plate, and the pipe clamp mechanisms are used for clamping the hose.

Optionally, the pipe clamp mechanism comprises a pipe clamp shell, a first holding claw and a second holding claw, the first holding claw and the second holding claw are both arranged on the pipe clamp shell, and the first holding claw and the second holding claw can be crossed to fix the hose.

Optionally, the first holding claw and the second holding claw are connected with the inner side wall of the pipe clamp shell through springs, and the first holding claw and the second holding claw are rotatably connected with the pipe clamp shell.

Optionally, the first holding claw or the second holding claw is movably connected with the pipe clamp shell, and the distance between the first holding claw and the second holding claw can be adjusted.

Optionally, the pipe clamp mechanism further comprises a first operating rod and a second operating rod which are arranged in parallel, the first operating rod and the second operating rod are racks, the two racks are connected through gear engagement, the first operating rod is movably connected with the first holding claw, and the second operating rod is movably connected with the second holding claw.

Optionally, the pipe clamp mechanism further comprises a translation plate, the second holding claw is fixed on the translation plate, and one side of the translation plate is connected with the pipe clamp shell through a spring.

The embodiment of the specification adopts at least one technical scheme which can achieve the following beneficial effects:

this scheme provides a check valve pipeline structure, can fix the hose again when not damaging the hose, improves the pumping precision.

This scheme provides a pipe clamp mechanism, relies on the pipe clamp to embrace and press from both sides the hose and makes the hose produce the deformation, and the fixed effect to the hose is improved to the frictional force between increase pipe clamp and the hose.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic view of a one-way valve pipeline structure provided in an embodiment of the present disclosure;

FIG. 2 is a plan view of the diaphragm check valve;

FIG. 3 is a cross-sectional view of a diaphragm check valve;

FIG. 4 is an exploded view of the diaphragm check valve;

FIG. 5 is a plan view of the spring-loaded check valve;

FIG. 6 is a cross-sectional view of the spring-loaded check valve;

FIG. 7 is an exploded view of the spring check valve;

FIG. 8 is a plan view of a duckbill check valve;

FIG. 9 is a cross-sectional view of a duckbill check valve;

fig. 10 is an exploded view of a duckbill check valve;

fig. 11 is a schematic perspective view of the clamp type pipe clamp mechanism;

FIG. 12 is a bottom view of the clamp type pipe clamp mechanism

FIG. 13 is a cross-sectional view of the clamp type pipe clamp mechanism;

FIG. 14 is a perspective view of the movable clamp mechanism;

reference numerals: 1. a one-way valve; 2. a hose; 101. a first valve shell; 102. a second valve shell; 103. a membrane; 104. pushing the sheet; 105. a third valve shell; 106. a valve shell IV; 107. a spring; 108. steel balls; 109. a seal ring; 110. a duckbill structure; 18. a first pipe clamp shell; 19. a first holding claw; 20. a second holding claw; 21. a finger-shaped structure; 22. a first spring; 23. a first operating lever; 24. a second operating lever; 25. an operation branch; 26. a gear; 27. moving the clamping group; 28. a pipe clamp shell II; 29. a third holding claw; 30. c, embracing a claw IV; 31. a translation plate; 32. a slideway; 33. and a second spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The utility model discloses a check valve pipeline structure is applicable to the extrusion formula peristaltic pump, and wherein, the extrusion formula peristaltic pump is including the extrusion drive structure that is used for the extrusion hose, correspond the apron that sets up and set up the hose between the extrusion drive structure with extrusion drive structure working face, and import and export the pipe clamp that the direction set up at the hose. In order to realize the repeated extrusion work of the hose of the extrusion type peristaltic pump, the extrusion driving structure can be a conventional cam mechanism.

The utility model provides a for simplify the structure of extrusion formula peristaltic pump among the technical scheme, use the check valve to replace and be used for in the extrusion pump by the mechanism that ends of the fluid in the hose. The concrete scheme is as shown in figure 1, two check valves 1 are connected respectively at hose 2 both ends, and the check valve that the feed liquor direction set up is the feed liquor valve, and the check valve that the flowing back direction set up is the flowing back valve, and the circulation direction of two check valves is the same for the pipeline is followed single direction and is communicated.

When the liquid discharging device is used, the hose 2 is extruded, the pressure in the hose 2 is increased, the pressure in the hose pushes the liquid inlet valve to be closed, and the air in the hose is discharged from the liquid discharging direction through the liquid discharging one-way valve. After loosening the hose 2, the hose is by self elasticity volume of recovering, and at this in-process, negative pressure increase in the hose for the flowing back valve is closed, and liquid flows into the hose by feed liquor valve direction, and finally in the repeated extrusion in-process of hose, the liquid that realizes in the hose flows to the flowing back valve direction by feed liquor single valve direction. Because the drain valve is closed in the hose resetting process, liquid backflow can be avoided, the compressed volume of the hose is the volume of the discharged liquid, and the pumping precision of the extrusion pump can be conveniently controlled.

The opening pressure of the check valve cannot be greater than the negative pressure of the inner cavity of the hose and the pressure generated by extrusion in the hose.

In order to achieve better function of the squeeze pump, the smaller the opening pressure and the back sealing pressure of the check valve, the better.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

The check valve is a conventional hose check valve and mainly comprises a diaphragm type check valve, a spring type check valve, a duckbill type check valve and the like.

Example one

As shown in fig. 2-4, the check valve is a diaphragm type check valve, and includes a first valve housing 101 and a second valve housing 102 that are fastened to each other, a diaphragm 103 is disposed in an internal space formed by the first valve housing 101 and the second valve housing 102, a push piece 104 is further disposed inside the second valve housing 102, the push piece 104 is disposed along a radial direction of the second valve housing 102, a height of the push piece 104 gradually increases from an edge of the valve core to a middle of the valve core until the push piece is close to the diaphragm 103, and the push piece 104 plays a role of supporting the diaphragm 103.

The minimum distance between the push piece 104 and the first valve housing 101 is at least larger than the thickness of the diaphragm 103, so that the problem of hole blockage caused by pushing the diaphragm 103 to the hole diameter position of the first valve housing 101 is avoided.

The working principle is as follows: when liquid flows in from the first valve shell 101, the liquid pushes the membrane 103 to move towards the push piece 104 until the membrane is attached to the push piece 104, and the one-way valve channels are communicated, so that the liquid can enter the second valve shell 102. When liquid flows in from the second valve shell 102, the liquid pushes the diaphragm 103 to the inner side end face of the first valve shell 101 to seal the through hole of the first valve shell 101, so that the liquid circulation is blocked, and the one-way valve controls the liquid to flow to the first valve shell 101 only from the second valve shell 102.

Example two

As shown in fig. 5-7, the check valve is a spring check valve, and includes a valve housing three 105 and a valve housing four 106 that can be engaged with each other, a spring 107, a steel ball 108, and a sealing ring 109 are further installed inside the valve core, one end of the spring 107 abuts against the inner side end face of the valve housing four 106, and the other end contacts with the steel ball 108, so as to push the steel ball 108 to abut against the opening of the valve housing three 105, thereby closing the valve path.

In order to improve the sealing effect, a sealing ring 109 is arranged between the valve housing III 105 and the steel ball 108.

The working principle of the spring type one-way valve is the same as that of the diaphragm type one-way valve, and the description is omitted.

EXAMPLE III

As shown in fig. 8-10, the check valve is a duckbill check valve, which is different from a spring check valve in that: the valve core of the duckbill type check valve is a duckbill structure 110 made of elastic material, the duckbill structure 110 is a cylindrical structure, one end of the duckbill structure 110 is provided with a flange used for fixing the valve casing, and the other end of the duckbill structure 110 is a closed and flattened mouth type structure.

The working principle is as follows: when liquid enters the duckbill 110 from the flange side, the flowing liquid pushes the closed portion away from both sides to form a passageway, allowing the liquid to flow through the one-way valve. When liquid flows in from the closed part of the duckbill 110, the pushing force of the liquid further collapses the closed end of the duckbill 110, further closing of the duckbill 110 is achieved, and the check valve is opened.

Based on the above embodiments, this specification also provides an extrusion type peristaltic pump, including: the pipe clamp comprises a one-way valve pipeline structure, an extrusion driving structure, a pipe clamp mechanism and a cover plate, wherein the one-way valve pipeline structure is arranged between the extrusion driving structure and the cover plate, the extrusion driving structure is used for extruding the hose, the pipe clamp mechanism is fixedly arranged at two ends of the cover plate, and the pipe clamp mechanism is used for clamping the hose.

Example four

The embodiment provides a embrace formula of pressing from both sides pipe clamp relies on the pipe clamp to embrace and presss from both sides the hose and makes the hose produce the deformation, and the fixed effect to the hose is improved to the frictional force between increase pipe clamp and the hose.

As shown in fig. 11, the pipe clamp mechanism includes a first pipe clamp shell 18, a first holding claw 19 and a second holding claw 20, one end of which is provided with a plurality of finger structures 21, the finger structures 21 of the first holding claw 19 and the second holding claw 20 are bent inward, and the finger structures 21 of the first holding claw 19 and the second holding claw 20 can be crossed with each other. The first holding claw 19 and the second holding claw 20 are rotatably arranged on the pipe clamp shell, and the finger-shaped structures 21 of the first holding claw 19 and the second holding claw 20 are oppositely provided with bent clamping hoses.

The first pipe clamp shell 18 is fixedly arranged at two ends of the cover plate of the extrusion pump, or two ends of the cover plate are directly integrated with the first pipe clamp shell 18 into a whole structure. It should be noted that the pressure receiving surface of the first gripper housing 18 is coplanar with the working surface of the cover plate. When the hose 2 is installed, the hose 2 is clamped on the working surface of the cover plate under the clamping effect of the clamping claw group, and the problem that the working precision of the flow extrusion pump is reduced due to the fact that the hose 2 shakes when being pressed due to the interval distance between the hose 2 and the working surface of the cover plate is avoided.

The other ends of the first holding claw 19 and the second holding claw 20 are respectively provided with a spring which is connected with the inner side wall of the pipe clamp shell, and the springs provide tension for the first holding claw 19 and the second holding claw 20. Therefore, when the first holding claw 19 and the second holding claw 20 rotate towards the inner side, the hose 2 can be held tightly towards the pipe clamp shell, the hose is enabled to lean against a supporting surface, the friction force for fixing the hose is further improved, the first holding claw 19 and the second holding claw 20 apply pressure to the hose simultaneously, the radial direction stress of the hose can be kept uniform, the stability for fixing the hose is further improved, and the clamping effect of the hose is improved.

In addition, the plurality of finger-shaped structures 21 are arranged on the holding claw, so that the fixed length of the hose in the axial direction is prolonged, the contact area of the holding claw and the hose is increased, the clamping force of the pipe clamp is improved, and the hose is prevented from moving in the axial direction. When the hose needs to be replaced, the first holding claw 19 and the second holding claw 20 are separated to release the hose 2.

When needing to use many hoses of centre gripping, embrace claw one 19 and embrace two 20 constitutions and embrace the claw group, the multiunit is embraced the claw and is arranged along casing length direction in proper order in the pipe clamp casing, and adjacent armful claw of group embraces claw 19 and embrace between the claw two 20 spring one 22 and connect.

In order to realize the simultaneous opening of multiple groups of holding claws, the embodiment is further provided with two operating levers (shown in fig. 12-13) which can slide in parallel along the length direction on the inner side of the pipe clamp shell body 18, each operating lever is provided with a plurality of operating branches 25, the operating branch of the operating lever one 23 is movably connected with the holding claw one 19 of each holding claw group, the operating branch of the operating lever two 24 is movably connected with the holding claw two 20 of each holding claw group, when the pipe clamp is used, the operating lever one 23 can simultaneously rotate all the holding claws one 19, and the operating lever two 24 can simultaneously rotate all the holding claws two 20. In order to realize the linkage of the two operating rods, the second operating rod 24 and the first operating rod 23 in the utility model are in a rack structure, and the teeth of the second operating rod and the teeth of the first operating rod are arranged oppositely. A gear 26 is further arranged between the first operating lever 23 and the second operating lever 24, and the gear 26 is meshed with teeth on the first operating lever 23 and the second operating lever 24 respectively, so that when a certain operating lever is moved, linkage of the other operating lever can be achieved, or the gear 26 is directly rotated, simultaneous movement of the first operating lever 23 and the second operating lever 24 can be achieved, and therefore the first holding claw 19 and the second holding claw 20 are opened simultaneously.

EXAMPLE five

As shown in fig. 14, the clamp-type pipe clamp of this embodiment is a moving structure, and its operation principle and effect are the same as those of the fifth embodiment, except that the rotating clamp jaw is replaced by a moving clamp jaw, a plurality of moving clamp groups 27 are disposed on the second pipe clamp housing 28, and each moving clamp group 27 includes a clamp jaw three 29 fixed on the second pipe clamp housing 28 and a clamp jaw four 30 disposed opposite to the clamp jaw three 29 and capable of moving horizontally along the length direction of the second pipe clamp housing 28. The fourth holding claw 30 is fixed on the flat moving plate 31, the slide way 32 is arranged on the inner side of the second pipe clamp shell 28 along the length direction, the flat moving plate 31 is matched with the slide way 32 for use, the flat moving plate 31 can only move along the slide way 32, and when the hose clamp is used, the flat moving plate 31 can be moved along the horizontal direction to enable the fourth holding claw 30 to be close to or far away from the third holding claw 29, so that the hose can be clamped and loosened.

In order to realize the clamping effect of the movable clamping group 27, a second spring 33 is arranged at one end of the translation plate 31 in the moving direction and connected with the second pipe clamp shell 28, and the second spring 33 provides power for the translation plate 31 to push the fourth holding claw 30 to move towards the third holding claw 29 so as to maintain the clamping force.

When a plurality of groups of pipe clamps are arranged, the three embracing claws 29 are sequentially arranged at intervals along the length direction of the second pipe clamp shell 28, meanwhile, the flat movable plate 31 is sequentially provided with a plurality of four embracing claws 30 along the length direction, and the distance between every two adjacent four embracing claws 30 is the same as that between every two adjacent three embracing claws 29.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims (14)

1. A check valve piping structure, comprising: the hose, the one-way valve I and the one-way valve II; one end of the hose is connected with the first one-way valve, the other end of the hose is connected with the second one-way valve, the flowing directions of the first one-way valve and the second one-way valve are the same, and the connecting parts of the first one-way valve, the second one-way valve and the hose are both in a boss shape.

2. A check valve tubing arrangement as claimed in claim 1, wherein said check valve comprises: diaphragm type check valves, spring type check valves or duckbill type check valves; the second one-way valve comprises: diaphragm type check valves, spring type check valves or duckbill type check valves.

3. The check valve pipeline structure according to claim 2, wherein the diaphragm type check valve comprises a first valve casing and a second valve casing which are fastened to each other and have a through hole at the center, the first valve casing and the second valve casing form an inner space in which a diaphragm is disposed, a push piece is further disposed inside the second valve casing, the push piece is arranged in a radial direction of the second valve casing, the height of the push piece gradually increases from the edge to the center, and the push piece is used for supporting the diaphragm.

4. A one-way valve conduit structure as defined in claim 3, wherein said push tab has a minimum distance from said valve housing that is greater than the thickness of said diaphragm.

5. The check valve pipeline structure of claim 2, wherein the spring type check valve comprises a valve casing III and a valve casing IV which are buckled with each other and have through holes at the centers, a spring and a steel ball are arranged in the valve casing IV, one end of the spring is abutted against the inner side end face of the valve casing IV, and the other end of the spring is contacted with the steel ball.

6. The check valve pipeline structure of claim 5, wherein a sealing ring is arranged between the valve housing III and the steel balls.

7. The check valve piping structure of claim 2, wherein said duckbill check valve comprises a first valve housing and a second valve housing which are engaged with each other and have a central through hole, an inner space formed by said first valve housing and said second valve housing being formed with a duckbill structure of an elastic material.

8. The check valve conduit structure of claim 7, wherein the center of said duckbill structure is a through hole, one end of said duckbill structure secures a flange of said valve housing five, and the other end is a spout structure.

9. An extruded peristaltic pump, comprising: the check valve line structure, the squeeze driving structure, the pipe clamping mechanism and the cover plate according to claim 1, wherein the check valve line structure is disposed between the squeeze driving structure and the cover plate, the squeeze driving structure is used for squeezing the hose, the pipe clamping mechanism is fixedly disposed at both ends of the cover plate, and the pipe clamping mechanism is used for clamping the hose.

10. The extrusion peristaltic pump as recited in claim 9, wherein the tube clamping mechanism includes a tube clamping housing, a first holding claw and a second holding claw, the first holding claw and the second holding claw are both disposed on the tube clamping housing, and the first holding claw and the second holding claw can intersect with each other to fix the hose.

11. The extrusion peristaltic pump of claim 10, wherein the first gripper and the second gripper are both connected to the inner side wall of the tube clamp housing through springs, and the first gripper and the second gripper are both rotatably connected to the tube clamp housing.

12. The extrusion peristaltic pump as recited in claim 10, wherein the first clasping claw or the second clasping claw is movably connected with the tube clamp housing, and a distance between the first clasping claw and the second clasping claw is adjustable.

13. The extrusion type peristaltic pump of claim 11, wherein the tube clamping mechanism further comprises a first operating rod and a second operating rod which are arranged in parallel, the first operating rod and the second operating rod are racks, the racks are meshed and connected with each other through gears, the first operating rod is movably connected with the first holding claw, and the second operating rod is movably connected with the second holding claw.

14. The squeeze peristaltic pump as claimed in claim 12, wherein the tube clamp mechanism further comprises a translation plate, the second holding jaw is fixed to the translation plate, and one side of the translation plate is connected to the tube clamp housing through a spring.

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