Electromagnetic pinch valve

Abstract

The utility model discloses an electromagnetic pinch valve which aims at overcoming the defect that an existing electromagnetic pinch valve can only pinch off a single hose. The electromagnetic valve comprises a valve body, a piston and an electromagnetic driving structure for driving the piston to move, a plurality of through holes are formed in the valve body in the direction perpendicular to the axis of the valve body, open grooves for avoiding the through holes are formed in the piston, a long round hole is formed in the piston in the axial direction, the direction of the long round hole is formed in the radial direction of the piston, and a pin hole is formed in the valve body. A connecting pin is inserted into the valve body through the pin hole, the connecting pin is inserted into the long round hole and limits rotation of the piston relative to the valve body, and when the electromagnetic driving structure drives the piston to move, the piston shields the through hole along with displacement of the piston. One pinch valve is used for simultaneously controlling the on-off of a plurality of hoses, so that the market requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pinch valve, more specifically, it relates to a kind of electromagnetic pinch valve. BACKGROUND

[0002] Pinch valve is a kind of flow control valve body, soft tube is inserted into pinch valve, piston displacement and pressure to soft tube under electromagnetic action, the flow cross section of soft tube tends to 0, thereby disconnecting flow, when the piston in pinch valve reverses motion, soft tube is no longer subjected to the pressure of piston, and restores original shape under the influence of its elasticity to be connected again.

[0003] Chinese patent CN204942702U, the application discloses a kind of mute pinch valve, including pinch valve body, coil, moving iron core, mute gasket, spring, static iron core and push rod;Wherein, static iron core and moving iron core are arranged at the inner side of pinch valve body and the end of static iron core is connected with pinch valve body, moving iron core is arranged at the end of the end of pinch valve body;Coil is arranged between the inner surface of pinch valve body and the outer surface of static iron core;Static iron core is provided with push rod hole extending along axis;Spring is arranged in push rod hole;Push rod one end is arranged in push rod hole, and the other end is connected with the side surface of moving iron core;The side surface of moving iron core is provided with mute gasket extending along circumference;When coil is energized, push rod moves along push rod hole to the end of pinch valve body, and moving iron core contacts the end surface of the other end of static iron core through mute gasket, and the valve body can only clamp single soft tube, and cannot provide on-off control to multiple soft tubes. UTILITY MODEL CONTENTS

[0004] The utility model overcomes the insufficient that the electromagnetic pinch valve can only clamp and disconnect single soft tube at present, provides a kind of electromagnetic pinch valve, it can provide control to multiple soft tubes, meet needs.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A kind of electromagnetic pinch valve, including valve body, piston and the electromagnetic drive structure of driving piston to move, along with the direction perpendicular to the axis of valve body, the valve body is provided with several through holes, piston is provided with the slot of avoiding through hole, piston is provided with the long circular hole along the axial direction, the direction of long circular hole is arranged along the radial direction of piston, valve body is provided with pin hole, valve body is inserted with connecting pin through pin hole, connecting pin is inserted in long circular hole and limits the rotation of piston relative to valve body, when electromagnetic drive structure drives piston displacement, piston blocks the through hole with piston displacement.

[0007] The soft pipe is cut off by physical cutting, so that the on-off control of the soft pipe is realized. Specifically, the flexible soft pipe is inserted into the through hole, the relative displacement of the valve body and the piston is controlled, the valve body and the piston are pressed against the soft pipe, the soft pipe is deformed, the local cross section of the soft pipe tends to 0, and the cutting of the soft pipe is realized. The present application can simultaneously cut off a plurality of through holes, and then realize the on-off control of a plurality of soft pipes.

[0008] Preferably, the through hole is symmetrically arranged about the axis of the valve body. The structure can avoid the deflection of the piston relative to the axis caused by uneven force.

[0009] Preferably, the top of the pin hole is coplanar with the bottom of the through hole. For the through hole corresponding to the slot, the connecting pin is arranged to first limit the deflection of the valve body, and secondly realize the deformation of the soft pipe through the abutment between the top wall of the slot and the connecting pin.

[0010] Preferably, a plurality of layers of through holes are arranged on the side wall of the valve body along the height direction. More layers of through holes are arranged to realize the simultaneous control of more soft pipes.

[0011] Preferably, the side wall of the valve body is provided with two layers of through holes, each layer having two through holes.

[0012] Preferably, the top wall of the slot or the bottom of the piston is provided with an on-off pressing block, and the on-off pressing block is located directly above the pin hole. The on-off pressing block reduces the contact area, increases the pressure, increases the deformation area of the contacted soft pipe, and realizes better flow control effect.

[0013] Preferably, the bottom of the on-off pressing block is provided with a rounded corner. The structure avoids damage to the soft pipe caused by excessive pressure of the on-off pressing block.

[0014] Preferably, the electromagnetic driving structure includes a push rod, the top of the piston is provided with a connecting column, and the push rod is partially inserted into the connecting column and threadedly connected with the connecting column. The push rod is connected through the armature.

[0015] Preferably, a side slot is further arranged, the side slot is arranged in the radial direction from the side wall, the side slot is communicated with the through hole, and the distance between the two slot walls of the side slot is smaller than the diameter of the through hole. The side slot provides a soft pipe deformation space, the soft pipe is subjected to a force in the up-down direction, the shape of the soft pipe in the transverse direction is increased, and the side slot provides a corresponding space.

[0016] Preferably, the on-off pressing block is strip-shaped, and the length direction of the on-off pressing block is perpendicular to the through hole. The strip-shaped on-off pressing block can definitely press the soft pipe.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] (1) A pipe clamp valve is used to simultaneously control the on-off of a plurality of soft pipes;

[0019] (2) The connecting pin not only limits the rotation of the piston relative to the valve body, but also cooperates with the on-off pressure block to achieve the stop of the hose. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a front view of the utility model;

[0021] Figure 2 is Figure 1 is a sectional view of A-A in the middle;

[0022] Figure 3 is Figure 2 is a sectional view of B-B in the middle;

[0023] Figure 4 is a schematic view of the piston;

[0024] Figure 5 is a schematic view of the valve body;

[0025] In the drawings:

[0026] Valve body 1, piston 2, through hole 3, slot 4, long circular hole 5, pin hole 6, connecting pin 7, on-off pressure block 8, push rod 9, side slot 10, coil 11, iron core 12, spring 13, hose 14, connecting column 15. DETAILED DESCRIPTION

[0027] The present disclosure will be further described below in conjunction with the drawings and examples.

[0028] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as would be understood by one of ordinary skill in the art to which this application pertains.

[0029] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component, and / or combinations thereof.

[0030] In the present disclosure, the terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship shown in the drawings, which is only a relationship word determined for the convenience of describing the structural relationship of the components or elements of the present disclosure, and is not intended to specify any component or element in the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0031] In the present disclosure, terms such as "fixed connection", "connected", "coupled" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For those skilled in relevant scientific research or technology in this field, the specific meaning of the above terms in the present disclosure can be determined according to specific circumstances, and it should not be construed as a limitation to the present disclosure.

[0032] Embodiment:

[0033] An electromagnetic clamping tube valve, as shown in Figures 1 to 3 the figure, includes a valve body 1, a piston 2 and an electromagnetic drive structure for driving the piston 2 to move. Along a direction perpendicular to the axis of the valve body 1, a plurality of through holes 3 are provided on the valve body 1. The piston 2 is assembled in the valve body 1 and avoids the through holes 3. When the electromagnetic drive structure drives the piston 2 to displace, the piston 2 blocks the through holes 3 as the piston 2 displaces.

[0034] By physically truncating the hose 14, the on / off control of the hose 14 is realized. Specifically, the flexible hose 14 is inserted into the through hole 3. By controlling the relative displacement of the valve body 1 and the piston 2, the valve body 1 and the piston 2 relatively press against the hose 14, forcing the hose 14 to deform, so that the local cross-section of the hose 14 tends to 0, thereby realizing the truncation of the hose 14. In this application, a plurality of through holes 3 are provided, so that a plurality of through holes 3 can be truncated simultaneously, and further the on / off control of multiple hoses 14 is realized. It should be noted that the so-called truncation is only the disconnection of the flow rate of the hose 14, rather than the cutting of the hose 14 itself.

[0035] As shown in Figures 3 to 5 the figure, a slot 4 for avoiding the through hole 3 is provided on the piston 2. The piston 2 is provided with an oblong hole 5 in the axial direction, and the direction of the oblong hole 5 is arranged along the radial direction of the piston 2. The valve body 1 is provided with a pin hole 6, and a connecting pin 7 is inserted into the valve body 1 through the pin hole 6. The connecting pin 7 is inserted into the oblong hole 5 and restricts the rotation of the piston 2 relative to the valve body 1. The top of the pin hole 6 and the bottom of the through hole 3 are coplanar. For the through hole 3 corresponding to the slot 4, the connecting pin 7 can be used first to limit the deflection of the valve body 1, and secondly, the truncation of the hose 14 can be realized by the abutment of the top wall of the slot 4 and the connecting pin 7. The number of slots 4 provided is related to the number of layers of the through holes 3. Specifically, when the through holes 3 are two layers, the slots 4 are provided one on each side, left and right. If the through holes 3 are three layers, the slots 4 are provided in two layers, up and down and one on each side, left and right.

[0036] The through hole 3 is symmetrically arranged with respect to the axis of the valve body 1. The structure can avoid the deflection of the piston 2 relative to its axis caused by uneven force. The side wall of the valve body 1 is provided with a plurality of layers of through holes 3 along the height direction. The arrangement of more layers of through holes 3 can realize the simultaneous control of more hoses 14. The side wall of the valve body 1 is provided with two layers of through holes 3, two through holes 3 in each layer.

[0037] The arrangement of the connecting pin 7 is arranged according to the connection relationship between the piston 2 and the valve body 1. Referring to Figure 3 For the through hole 3 corresponding to the slot 4, the valve body 1 is always provided with a pin hole 6 below the through hole 3 for inserting the connecting pin 7. For reference Figure 3 , the upper layer of the hose 14; for the lowermost layer of the through hole 3, the valve body 1 can also be attached to the bottom surface of the piston 2 by the connecting pin 7, or the bottom surface of the valve body 1 can be used to cooperate with the bottom surface of the piston 2 to abut against the hose 14 to cut off the flow, for reference Figure 3 , the lower layer of the hose 14.

[0038] The top wall of the slot 4 or the bottom of the piston 2 is provided with an on-off pressure block 8, which is located directly above the pin hole 6. The on-off pressure block 8 reduces the contact area, increases the pressure, increases the deformation area of the contacted hose 14, and realizes better flow control effect. The bottom of the on-off pressure block 8 is provided with a rounded corner. The structure avoids damage to the hose 14 caused by excessive pressure of the on-off pressure block 8. A side slot 10 is also provided, which is arranged in the radial direction from the side wall. The side slot 10 communicates with the through hole 3, and the distance between the two slot walls of the side slot 10 is less than the diameter of the through hole 3. The side slot 10 provides a deformation space for the hose 14. The hose 14 is subjected to a force in the up-down direction, and the shape of the hose 14 in the transverse direction will increase, and the side slot 10 provides a corresponding space. The on-off pressure block 8 is strip-shaped, and the length direction of the on-off pressure block 8 is perpendicular to the through hole 3. The strip-shaped on-off pressure block 8 ensures that it can press the hose 14, and reduces the precision requirements of the components and assembly.

[0039] Referring to Figure 2 , the electromagnetic drive structure includes a push rod 9, and the top of the piston 2 is provided with a connecting column 15, and the push rod 9 is partially inserted into the connecting column 15 and is threadedly connected with the connecting column 15. The piston 2 is connected through the push rod 9. In some embodiments, the electromagnetic drive structure is a normally closed structure, and in other embodiments, the electromagnetic drive structure is a normally open structure. In the normally closed structure, the electromagnetic drive structure includes a coil 11, a push rod 9, a spring 13, and an iron core 12. When current passes through the coil 11 wound on the iron core 12, the iron core 12 generates current, thereby pulling up the connecting rod and the piston 2, thereby releasing the restriction on the hose 14, and the hose 14 is in a connected state; when the current disappears, it is reset under the action of the spring 13, and the piston 2 presses the hose 14, so that the hose 14 is in a cut-off state.

[0040] The above-mentioned embodiments are only preferred solutions of the present application, and do not limit the present application in any form, and other variants and modifications are possible without departing from the technical solutions recited in the claims.

Claims

1. An electromagnetic pinch valve, characterized in that, The device includes a valve body, a piston, and an electromagnetic drive structure for moving the piston. Along a direction perpendicular to the axis of the valve body, the valve body has several through holes. The piston has slots to avoid the through holes. The piston has an elongated hole along the axial direction, and the direction of the elongated hole is set along the radial direction of the piston. The valve body has a pin hole through which a connecting pin is inserted. The connecting pin is inserted into the elongated hole and restricts the rotation of the piston relative to the valve body. When the electromagnetic drive structure drives the piston to move, the piston moves with the piston and blocks the through holes.

2. The electromagnetic pinch valve according to claim 1, characterized in that, The through holes are symmetrically arranged about the axis of the valve body.

3. The electromagnetic pinch valve according to claim 1, characterized in that, The top of the pin hole is coplanar with the bottom of the through hole.

4. The electromagnetic pinch valve according to claim 1, characterized in that, The valve body has several layers of through holes along the height direction on its side wall.

5. An electromagnetic pinch valve according to claim 4, characterized in that, The valve body has two layers of through holes on its side wall.

6. The electromagnetic pinch valve according to claim 1, characterized in that, The top wall of the slot or the bottom of the piston is provided with a switch block, which is located directly above the pin hole.

7. An electromagnetic pinch valve according to claim 6, characterized in that, The bottom of the switch block is rounded.

8. An electromagnetic pinch valve according to claim 6 or 7, characterized in that, The through-hole pressure block is strip-shaped, and its length direction is perpendicular to the through hole.

9. An electromagnetic pinch valve according to claim 1, characterized in that, The electromagnetic drive structure includes a push rod, a connecting post on the top of the piston, and a portion of the push rod is inserted into the connecting post and threadedly connected to the connecting post.

10. An electromagnetic pinch valve according to claim 1, characterized in that, It also has a side slot, which is set radially from the side wall and connects to the through hole. The distance between the two slot walls of the side slot is less than the diameter of the through hole.

Images