Pinch valve

Abstract

The utility model relates to a pinch valve, and relates to the technical field of valves. The pipe clamping valve comprises an air cylinder, a pipe clamping block, a pipe clamping rod and a front seat; the air cylinder is connected with the pipe clamping block; the pipe clamping block is provided with a clamping groove, and the pipe clamping rod is fixed on the front seat and extends into the clamping groove; wherein a pipeline is arranged between the pipe clamping rod and the pipe clamping block, and the air cylinder is used for driving the pipe clamping block to be close to / away from the pipe clamping rod so as to clamp / loosen the pipeline; according to the pinch valve, the air cylinder serves as a driving element, compared with a linear motor, the air cylinder has the advantages of being stable, fixed in stroke and large in thrust, the clamping force is large, a pipeline can be completely clamped, liquid flowing is blocked, and therefore the pinch valve is stable in operation power and high in reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technology field especially relates to a pinch valve. BACKGROUND

[0002] The pinch valve can block the fluid flow in the pipeline, and is a commonly used pipeline opening and closing valve device.

[0003] In the prior art, a small linear motor is usually used to drive the pinch valve to loosen or clamp, the pinch valve is small in size, and the stability of the motor used is difficult to guarantee, and problems such as insufficient motor thrust, incomplete stroke, and non-operation of the motor occasionally occur, which affects the normal use. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of pinch valve to solve the problem that the pinch valve driven by existing small linear motor is unstable in operation power and insufficient in reliability.

[0005] In a first aspect, the utility model provides a kind of pinch valve, including cylinder, pinch block, pinch rod and front seat;The cylinder is connected with the pinch block;The pinch block is equipped with clamping groove;The pinch rod is fixed on the front seat, and extends into the clamping groove;Wherein, pipeline is arranged between the pinch rod and the pinch block, and the cylinder is used to drive the pinch block to be close to / away from the pinch rod to clamp / loosen the pipeline.

[0006] Further technical solutions are that the pinch block is equipped with sliding hole, and the pinch rod extends into the clamping groove through the sliding hole.

[0007] Further technical solutions are that the front seat is equipped with recess, and the pipeline is embedded in the recess.

[0008] Further technical solutions are that the front seat is equipped with fixed hole, and one end of the pinch rod is embedded in the fixed hole.

[0009] Further technical solutions are that it further includes connecting block, the cylinder is connected with the connecting block, and the connecting block is connected with the pinch block.

[0010] Further technical solutions are that it further includes limiting rod, one end of the connecting block is equipped with connecting groove, one end of the pinch block is embedded in the connecting groove, and the limiting rod passes through the pinch block and the connecting groove;Wherein, the pinch block and the side wall of the connecting groove are equipped with limiting hole for limiting rod to pass through, and the limiting rod can slide in the limiting hole of pinch block.

[0011] Further technical solutions are that it further includes fixed flange, and the cylinder is connected with the fixed flange.

[0012] Further, the technical scheme is further provided with a connecting flange and a cushion block, the connecting flange is connected with the cushion block, and the cushion block is connected with the front seat.

[0013] Further, the technical scheme is further provided with a sealing ring, the sealing ring is sleeved outside the joint between the front seat and the cushion block.

[0014] Further, the technical scheme is further provided with a film, the film is arranged between the front seat and the cushion block.

[0015] Compared with the prior art, the above technical scheme provided by the embodiment of the utility model has the following advantages.

[0016] In the embodiment of the utility model, the pipe clamp valve includes a cylinder, a pipe clamp block, a pipe clamp rod and a front seat, the cylinder is connected with the pipe clamp block, the pipe clamp block is provided with a clamping groove, the pipe clamp rod is fixed on the front seat and extends into the clamping groove, wherein a pipeline is arranged between the pipe clamp rod and the pipe clamp block, the cylinder is used for driving the pipe clamp block to approach / away from the pipe clamp rod to clamp / loosen the pipeline, the technical scheme of the embodiment of the utility model uses the cylinder as a driving element, the cylinder has the characteristics of stability, fixed stroke and large thrust compared with the linear motor, the clamping force is large, the pipeline can be completely clamped to block the liquid flow, so that the pipe clamp valve has stable operation power and high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings incorporated into the description and forming a part of the description show the embodiments consistent with the utility model and are used together with the description to explain the principle of the utility model.

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by the ordinary skilled in the art without creative labor.

[0019] One or more embodiments are exemplarily illustrated by the pictures in the drawings corresponding thereto, and these exemplarily illustrations do not constitute the limitation of the embodiments, the elements with the same reference numerals in the drawings represent the similar elements, unless specially stated, the drawings do not constitute the proportional limitation.

[0020] Figure 1 The explosion view of the pipe clamp valve provided by the embodiment of the utility model is provided.

[0021] Figure 2 The structural schematic view of the pipe clamp valve provided by the embodiment of the utility model is provided.

[0022] Figure 3A cross section view of the pinch valve provided by the utility model embodiment when the air cylinder contracts;

[0023] Figure 4 A cross section view of the pinch valve provided by the utility model embodiment when the air cylinder extends.

[0024] Mark explanation:

[0025] Front seat 1, pinch rod 2, pinch block 3, air cylinder 4, fixed flange 5, sealing ring 6, film 7, cushion block 8, connecting flange 9, nut 10, connecting block 11, limiting rod 12, clamping groove 31, recess 11, fixed hole 12. Specific implementation

[0026] In order to make the purpose, technical scheme and advantages of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below by combining with the drawings in the utility model embodiment. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can refer to the same number and / or letter in different examples. Such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0028] For the convenience of description, spatial relative terms can be used in the specification to describe the relative position relationship or movement condition of one element or feature relative to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "on", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both the upper and lower positions. The device can be additionally oriented (rotated by 90 degrees or in other directions) and the spatial relative relationship descriptors used in the specification are interpreted accordingly.

[0029] In order to solve the problem of unstable operation power and insufficient reliability of the existing small linear motor driven pinch valve, the utility model provides a kind of pinch valve, cylinder is used to drive pinch valve work, and the problem of unstable operation and insufficient thrust is solved by pneumatic drive.

[0030] Referring to Figures 1-4 The utility model embodiment provides a kind of pinch valve, the pinch valve includes cylinder 4, pinch block 3, pinch rod 2 and front seat 1, and specific structure is introduced as follows:

[0031] The cylinder 4 is connected with the pinch block 3;Cylinder 4 is used to drive pinch block 3 movement.

[0032] The pinch block 3 is equipped with clamping groove 31, the pinch rod 2 is fixed on the front seat 1, and it is inserted into the clamping groove 31;The gap between the pinch rod 2 and the side wall of clamping groove 31 is used for pipe line, and pipe line can be specifically hose.

[0033] In the utility model embodiment, pipe line is arranged between the pinch rod 2 and the pinch block 3, and the cylinder 4 is used to drive the pinch block 3 to be close to / away from the pinch rod 2 to clamp / loosen the pipe line. Specifically, when the pinch block 3 and the pinch rod 2 clamp the pipe line, the fluid in the pipe line is cut off;When the pinch block 3 loosens the pipe line, the fluid in the pipe line can flow normally.

[0034] The utility model discloses an embodiment, pipe clamp valve includes cylinder 4, pipe clamp block 3, pipe clamp rod 2 and front seat 1, cylinder 4 with pipe clamp block 3 is connected, pipe clamp block 3 is equipped with clamping groove 31, pipe clamp rod 2 is fixed on front seat 1, and stretches into clamping groove 31, wherein, pipe is arranged between pipe clamp rod 2 with pipe clamp block 3, cylinder 4 is used for driving pipe clamp block 3 to be close to / away from pipe clamp rod 2 to clamp / loosen pipe, an embodiment of the utility model discloses the technical scheme by cylinder 4 as driving element, cylinder 4 has the characteristics of stable, stroke fixed, thrust big relative to linear motor, and the clamping strength is big, can completely clamp pipe and block liquid flow, thereby pipe clamp valve operating power is stable, and the reliability is high.

[0035] Further, in some embodiments, for example in the present embodiment, the pipe clamp block 3 is provided with a sliding hole, and the pipe clamp rod 2 extends into the clamping groove 31 through the sliding hole. Specifically, the pipe clamp rod 2 extends into the clamping groove 31 through the sliding hole. The sliding hole has a certain length, so that the pipe clamp block 3 can be driven by the cylinder 4 to slide.

[0036] Further, in some embodiments, for example in the present embodiment, the front seat 1 is provided with a recess 11, and the pipe is embedded in the recess 11. The number of recesses 11 can be two, so that the pipe can be better arranged.

[0037] Further, in some embodiments, for example in the present embodiment, the front seat 1 is provided with a fixing hole 12, and one end of the pipe clamp rod 2 is embedded in the fixing hole 12. The fixing hole 12 functions to fix the pipe clamp rod 2, so that the pipe clamp rod 2 is firmly fixed on the front seat 1.

[0038] Further, in some embodiments, for example in the present embodiment, the pipe clamp valve further comprises a connecting block 11, the cylinder 4 is connected with the connecting block 11, and the connecting block 11 is connected with the pipe clamp block 3. Specifically, the cylinder 4 outputs power to the pipe clamp block 3 through the connecting block 11.

[0039] Further, the pipe clamp valve further comprises a limiting rod 12, one end of the connecting block 11 is provided with a connecting groove, one end of the pipe clamp block 3 is embedded in the connecting groove, and the limiting rod 12 is connected with the connecting groove through the pipe clamp block 3. Specifically, the pipe clamp block 3 and the side wall of the connecting groove are both provided with limiting holes for the limiting rod 12 to pass through. After the limiting rod 12 passes through the pipe clamp block 3 and the connecting groove, it is fixed on the connecting block 11, so as to realize reliable fixation of the pipe clamp block 3.

[0040] The limiting hole of the pipe clamp block 3 has a certain length, so that the limiting rod 12 can slide in the limiting hole of the pipe clamp block 3, thereby having stroke buffering, and the large stroke of the cylinder 4 can be converted into the small stroke of the pipe clamp part.

[0041] Further, in some embodiments, for example in the present embodiment, the pinch valve further comprises a fixed flange 5, and the cylinder 4 is connected with the fixed flange 5. For example, the cylinder 4 and the fixed flange 5 can be connected by fasteners (such as screws), and the utility model is not specifically limited thereto.

[0042] Further, the pinch valve further comprises a connecting flange 9 and a pad 8, the connecting flange 9 is connected with the pad 8, and the pad 8 is connected with the front seat 1. For example, the connecting flange 9 and the pad 8 can be connected by fasteners (such as screws), and the utility model is not specifically limited thereto. The pad 8 and the front seat 1 can be connected by fasteners (such as screws), and the utility model is not specifically limited thereto. The fixed flange 5, the connecting flange 9, the pad 8 and the front seat 1 are all provided with through holes for the pinch block 3 and the connecting block 11 to pass through.

[0043] Further, in some embodiments, for example in the present embodiment, the pinch valve further comprises a sealing ring 6, which is sleeved outside the joint between the front seat 1 and the pad 8, and plays a reliable sealing role.

[0044] Further, in some embodiments, for example in the present embodiment, the pinch valve further comprises a film 7, which is arranged between the front seat 1 and the pad 8. The film 7 is also provided with through holes for the pinch block 3 and the connecting block 11 to pass through. The outer circle of the film 7 is clamped between the front seat 1 and the pad 8, and the inner circle of the film 7 is sleeved into the pinch block 3 and fixed by the nut 10 and the pinch block 3. Specifically, the inner circle of the film 7 is only larger than the outer diameter of the threaded portion of the pinch block 3, but not larger than the overall outer diameter of the pinch block 3, so that the pinch block 3, the film 7 and the pinch block 3 have an overlapping portion. The nut 10 is connected to the pinch block 3 by threads, and the inner circle of the film 7 is clamped by rotating the nut 10 and the pinch block 3 together. The film 7 is in the middle section of the pinch valve, which isolates the internal structure from the outside world, and plays a dustproof and aesthetic effect.

[0045] The working principle of the pinch valve is as follows:

[0046] The front seat 1, the pinch rod 2, the pad 8, the connecting flange 9 and the fixed flange 5 are fixed parts, which remain stable during work. The end of the pinch block 3 is cylindrical and is sleeved into the connecting block 11, and the two are concentrically and slidingly connected. The control cylinder 4 pushes and pulls the connecting block 11 to move forward and backward. During the extension of the cylinder 4, the sliding limit rod 12 is in the limit hole of the pinch block 3, and slides to the front end, pushes the pinch block 3 to move forward, so that the pinch block 3 and the pinch rod 2 are directly separated to form a space, the pipeline is put into the space, and the two ends of the pipeline are clamped into the groove 11 of the front seat 1 for fixation. The control cylinder 4 is retracted, the pinch block 3 is pulled back, and the pipeline is clamped by the pinch rod 2, so as to achieve the clamping effect and block the flow of liquid in the pipeline.

[0047] The cylinder 4 is used as a driving element, and the cylinder 4 has the characteristics of stability, fixed stroke and large thrust relative to the linear motor, and has large clamping force, so that the pipe clamp valve can completely clamp the pipe to block the liquid flow; the pipe clamp valve has a small overall size, so the pipe clamping part is small, and therefore, the connecting part has a certain stroke buffer part for converting the large stroke of the cylinder 4 into the small stroke of the pipe clamping part; the film 7 is located in the middle of the pipe clamp valve, and is isolated from the internal structure and the outside, so as to play a dustproof and aesthetic effect.

[0048] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0049] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0050] In addition, the terms "first" and "second" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0051] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "underneath" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0054] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the claims of the present application and their equivalents. The present application is intended to include these modifications and variations.

[0055] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pinch valve, characterized in that, It includes a cylinder, a pipe clamping block, a pipe clamping rod, and a front seat; the cylinder is connected to the pipe clamping block; the pipe clamping block has a clamping groove; the pipe clamping rod is fixed to the front seat and extends into the clamping groove; wherein, the pipeline is located between the pipe clamping rod and the pipe clamping block, and the cylinder is used to drive the pipe clamping block to move closer to / away from the pipe clamping rod to clamp / release the pipeline.

2. The pinch valve according to claim 1, characterized in that, The clamping block is provided with a sliding hole, and the clamping rod extends into the clamping groove through the sliding hole.

3. The pinch valve according to claim 1, characterized in that, The front seat has a groove, and the pipeline is embedded in the groove.

4. The pinch valve according to claim 1, characterized in that, The front seat is provided with a fixing hole, and one end of the clamping rod is embedded in the fixing hole.

5. The pinch valve according to claim 1, characterized in that, It also includes a connecting block, to which the cylinder is connected, and to which the connecting block is connected.

6. The pinch valve according to claim 5, characterized in that, It also includes a limiting rod, one end of the connecting block is provided with a connecting groove, one end of the clamping block is embedded in the connecting groove, and the limiting rod passes through the clamping block and the connecting groove; wherein, the side walls of the clamping block and the connecting groove are provided with limiting holes for the limiting rod to pass through, and the limiting rod can slide in the limiting hole of the clamping block.

7. The pinch valve according to claim 1, characterized in that, It also includes a fixed flange, to which the cylinder is connected.

8. The pinch valve according to claim 1, characterized in that, It also includes a connecting flange and a gasket, wherein the connecting flange is connected to the gasket and the gasket is connected to the front seat.

9. The pinch valve according to claim 8, characterized in that, It also includes a sealing ring, which is fitted onto the outside of the joint between the front seat and the pad.

10. The pinch valve according to claim 8, characterized in that, It also includes a film disposed between the front seat and the pad.

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