A dual-channel electromagnetic pinch valve

Abstract

A dual-channel electromagnetic clamping valve comprises a clamping valve body and a piston, wherein a longitudinal piston hole is provided inside the clamping valve body, the piston is provided in the piston hole, two clamping openings are horizontally provided on the clamping valve body, which are divided into a first clamping opening and a second clamping opening, and a first clamping tube axis and a second clamping tube axis are also provided on the clamping valve body. The present invention belongs to the technical field of electromagnetic valves. The present invention solves the problem that when a dual-channel electromagnetic valve cannot be powered, the second hose is clamped and cannot be replaced and adapted, and the flow of fluid cannot be observed. Before a call comes, the work of adapting the second hose can continue, saving time.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic valves, and in particular to a dual-channel electromagnetic pinch valve. Background Art

[0002] The solenoid pinch valve is driven by an electromagnetic solenoid, and the opening and closing is controlled by squeezing or loosening the hose. The medium only passes through the hose, and other parts of the valve body do not contact the medium. This means that compared with other types of solenoid valves, the pinch valve can pass medium with particles without clogging. Water quality testing equipment or medical testing equipment requires at least two different types of media supply, each medium is transmitted by a hose, and each hose is equipped with a solenoid valve to control the opening and closing of the hose, so the dual-channel solenoid pinch valve came into being.

[0003] A dual-channel solenoid valve generally includes a clamping valve body, a movable piston is provided in the clamping valve body, two limit ports are provided on the piston, and two clamping ports are also provided on the clamping valve body. Each limit port cooperates with a clamping port. The first hose is inserted into the first clamping port and the second limit port at the same time, and the second hose is inserted into the second clamping port and the second limit port at the same time. When the solenoid valve is energized, the first limit port and the first clamping port are misaligned to clamp the first hose. At this time, the second limit port and the second clamping port coincide, and the second hose is released. On the contrary, when the power of the solenoid valve is turned off, the first hose is released and the second hose is clamped.

[0004] However, the inventors of this application discovered that the above technology has at least the following technical problems during the process of implementing the technical solution of the embodiment of the present invention:

[0005] The hose needs to be debugged several times according to the specific application scenario before it can be officially put into use. If the power is cut off during the debugging process, the second hose will be clamped, and the second hose cannot be replaced, and the flow of the fluid in the second hose cannot be observed.

[0006] Invention / Summary of the Invention

[0007] In view of the deficiencies in the prior art, the present invention provides a dual-channel electromagnetic pinch valve, which solves the problems in the prior art.

[0008] According to an embodiment of the present invention, a dual-channel electromagnetic pipe clamp valve comprises a pipe clamp body and a piston, wherein a longitudinal piston hole is provided inside the pipe clamp body, the piston is provided in the piston hole, two clamping openings are transversely provided on the pipe clamp body, which are divided into a first clamping opening and a second clamping opening, the pipe clamp body is also provided with a first pipe clamp axis and a second pipe clamp axis, the piston is provided with a first limiting opening for limiting a first hose and a second limiting opening for limiting a second hose, a first elongated hole for passing the first pipe clamp axis is provided at a position on the piston opposite to the first limiting opening, a second elongated hole for passing the second pipe clamp axis is provided at a position on the piston corresponding to the second limiting opening, the length of the first elongated hole is equal to the sum of the diameter of the first pipe clamp axis and the diameter of the first hose, the diameter of the second hose is equal to the diameter of the first hose, the diameter of the second pipe clamp axis is equal to the diameter of the first pipe clamp axis, the length of the second elongated hole is equal to the length of the first elongated hole, a button is fixedly connected to the bottom of the piston, an inlet and outlet for the button to pass through is provided at the bottom of the pipe clamp body, and the inlet and outlet are communicated with the piston hole.

[0009] Furthermore, the piston includes an outer support body and an internal clamping body, the support body is a cylinder, and is provided with a channel with an inverted L-shaped cross-section. The clamping body is fixed in the middle of the channel, and the top of the support body and the clamping body form the first limiting opening for limiting the first hose, and the clamping body and the button form the second limiting opening for limiting the second hose.

[0010] Furthermore, the clamping body includes a fixing plate, a straight edge of which is fixedly connected to the supporting body, a first clamping rod is provided on the top surface of the fixing plate, and a second clamping rod is provided on the bottom surface of the fixing plate; the first clamping rod and the second clamping rod are both perpendicular to the supporting body, and one end thereof is connected to the supporting body, and the other end is away from the supporting body.

[0011] Furthermore, the first clamping rod includes a first clamping surface, the first clamping surface is opposite to the first clamping tube axis, and the width of the first clamping surface is smaller than the width of the side surface of the first clamping rod adjacent to the first clamping surface; the second clamping rod includes a second clamping surface, the second clamping surface is opposite to the second clamping tube axis, and the width of the second clamping surface is smaller than the width of the side surface of the second clamping rod adjacent to the second clamping surface.

[0012] Furthermore, it also includes a shell and a valve core, wherein the valve core is longitudinally arranged in the shell, a push rod is arranged in the valve core, the lower end of the push rod is fixedly connected to the piston, and the first clamping port and the second clamping port are spaced apart from each other in the upper and lower parts.

[0013] Furthermore, the first tube clamping shaft is closely located above the first clamping opening, and the second tube clamping shaft is closely located below the second clamping opening.

[0014] Furthermore, the first clamping rod also includes a first front side surface, the first front side surface is perpendicular to the inlet direction of the first hose, and a chamfer is provided between the first front side surface and the first clamping surface; the second clamping rod also includes a second front side surface, the second front side surface is perpendicular to the inlet direction of the second hose, and a chamfer is provided between the second front side surface and the second clamping surface.

[0015] Furthermore, the inlet and outlet are arranged concentrically with the piston hole, the diameter of the inlet and outlet is larger than the diameter of the piston hole, the button includes a connecting portion for connecting to the support body, the diameter of the connecting portion is less than or equal to the diameter of the inlet and outlet, and larger than the diameter of the piston hole.

[0016] Furthermore, the diameter of the connecting portion is equal to the diameter of the clamping valve body.

[0017] Furthermore, the button also includes a pressing portion for pressing with a finger, the pressing portion is fixedly connected to the connecting portion, and the diameter of the pressing portion is equal to the diameter of the clamping valve body.

[0018] The technical principle of the present invention is: when the power is suddenly cut off during the process of debugging the hose, and the hose needs to be replaced, the piston will be retracted due to the power outage, the second limit opening and the second clamping opening will be misaligned, the second clamping surface and the second clamping axis will clamp the second hose, and the second hose cannot be taken out for debugging, so the button can be pushed toward the valve core until the limit, and then the button is pressed and held, the original second hose is taken out, and a new second hose is replaced to observe the debugging effect. If the replaced second hose still does not work, a new one is replaced. During this process, the button is pressed and held until the second hose is successfully adapted. During the power outage, the first limit opening and the first clamping opening are overlapped, so the first hose can be taken out without pressing the button by hand.

[0019] The beneficial effects of the present invention are as follows: when the power is suddenly cut off during the process of debugging the hose and the second hose is in a clamped state, the second limit opening of the piston and the second clamping opening on the clamp valve body can be manually displaced by pushing upward a button fixedly connected to the bottom of the piston, and the button is pressed and held to take out the second hose for replacement and adaptation, and then the flow of the medium is observed until the adaptation is successful, and then the button is released, and the hose can be directly put into use after a call is received, thereby saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an overall structural diagram of an embodiment of the present invention;

[0021] Figure 2 A top view of an embodiment of the present invention;

[0022] Figure 3 The embodiment of the present invention is in the case of power failure. Figure 2 Section view in AA direction;

[0023] Figure 4 The embodiment of the present invention is powered on. Figure 2 Section view in AA direction;

[0024] Figure 5 It is a cross-sectional view of the embodiment of the present invention after the piston is removed;

[0025] Figure 6 is a first stereoscopic view of a piston according to an embodiment of the present invention;

[0026] Figure 7 is a second stereoscopic view of a piston according to an embodiment of the present invention;

[0027] Figure 8 for Figure 6 A magnified schematic diagram of part A.

[0028] In the above drawings: 1, shell; 2, valve body; 3, piston; 4, valve core; 5, push rod; 6, piston hole; 7, moving iron core; 21, first clamping port; 22, second clamping port; 23, first tube clamping axis; 24, second tube clamping axis; 31, first limit port; 32, second limit port; 33, first long hole; 34, second long hole; 8, button; 25, entrance and exit; 35, support body; 36, clamping body; 361, fixing plate; 362, first clamping rod; 363, second clamping rod; 362a, first clamping surface; 362b, first front side; 363a, second clamping surface; 363b, second front side; 81, connecting part; 82, pressing part; 9, first hose; 10, second hose. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1-Figure 5As shown, an embodiment of the present invention provides a dual-channel electromagnetic clamp valve, including a shell 1, a clamp valve body 2, a piston 3, and a valve core 4. The valve core 4 is longitudinally arranged in the shell 1, and a push rod 5 is arranged in the valve core 4. The lower end of the push rod 5 is fixedly connected to the piston 3. A longitudinal piston hole 6 is arranged inside the clamp valve body 2, and a piston 3 is arranged in the piston hole 6. A moving iron core 7 is fixedly connected to the top of the piston 3. When the present invention is powered on, the valve core 4 generates a magnetic field, and the moving iron core 7 will be attracted by the magnetic force to drive the piston 3 to move toward the valve core 4. When the present invention is powered off, the magnetic field of the valve core 4 disappears. Since the moving iron core 7 loses the magnetic attraction, the piston 3 returns to its original position. The clamping valve body 2 is provided with two clamping openings in the horizontal direction, which are divided into a first clamping opening 21 and a second clamping opening 22. The clamping valve body 2 is also provided with a first clamping tube axis 23 and a second clamping tube axis 24, and the first clamping opening 21 and the second clamping opening 22 are spaced apart from each other. The first clamping opening 21 is close to the housing 1, and the second clamping opening 22 is arranged near the bottom of the clamping valve body 2. The first clamping tube axis 23 is close to the top of the first clamping opening 21, and the second clamping tube axis 24 is close to the bottom of the second clamping opening 22. The first clamping opening 21 and the second clamping opening 22 are respectively used to clamp two hoses. The piston 3 is provided with a first limiting opening 31 for limiting the first hose 9 and a second limiting opening 32 for limiting the second hose 10. The first limiting opening 31 cooperates with the first clamping opening 21, and the second limiting opening 32 cooperates with the second clamping opening 22.

[0031] like Figure 4 and Figure 7As shown, a first elongated hole 33 for passing the first clamping shaft 23 is provided at a position opposite to the first limiting opening 31, and a second elongated hole 34 for passing the second clamping shaft 24 is provided at a position corresponding to the second limiting opening 32 on the piston 3. The length of the first elongated hole 33 is equal to the sum of the diameter of the first clamping shaft 23 and the diameter of the first hose 9, the diameter of the second hose 10 is equal to the diameter of the first hose 9, the diameter of the second clamping shaft 24 is equal to the diameter of the first clamping shaft 23, and the length of the second elongated hole 34 is equal to the length of the first elongated hole 33. When the piston 3 moves toward the valve core 4, until the bottom of the first elongated hole 33 hits the first clamping shaft 23, the first limiting opening 31 is completely staggered with the first clamping opening 21, and the bottom of the first limiting opening 31 is aligned with the first clamping shaft 23. The shaft 23 clamps the first hose 9 together, and at the same time, the bottom of the second elongated hole 34 hits the second clamping shaft 24, the top of the second limiting opening 32 is at the maximum distance from the second clamping shaft 24, and the second hose 10 is opened, which has a circulation function; on the contrary, when the piston 3 moves away from the valve core 4, until the top of the first elongated hole 33 hits the first clamping shaft 23, the first limiting opening 31 and the first clamping opening 21 completely overlap, the first clamping shaft 23 and the bottom of the first limiting opening 31 are at the maximum distance, the first hose 9 is opened, and has a circulation function, and at the same time, the top of the second elongated hole 34 hits the second clamping shaft 24, the second limiting opening 32 and the second clamping opening 22 are completely staggered, and the top of the second limiting opening 32 and the second clamping shaft 24 clamp the second hose 10 together.

[0032] Before the present invention is put into use in a specific device, the first hose 9 and the second hose 10 cannot be successfully adapted in one go, but need to be adapted multiple times. If a power failure occurs suddenly during the process, the second hose 10 will be clamped, and the second hose 10 cannot be taken out for reconfiguration.

[0033] like Figure 4-Figure 6 As shown, in order to prevent the above situation from occurring, a button 8 is fixedly connected to the bottom of the piston 3, and an inlet and outlet 25 for the button 8 to pass through is provided at the bottom of the clamping valve body 2, and the inlet and outlet 25 is communicated with the piston hole 6. When the present invention cannot be powered on, one hand pushes the button 8 toward the valve core 4 so that the second limit opening 32 overlaps with the second clamping opening 22, and then presses the button 8, and the other hand takes out the second hose 10 for replacement. After the replacement is completed, the hand pressing the button 8 is released.

[0034] like Figure 6As shown, specifically, the piston 3 includes an outer support body 35 and an internal clamping body 36, the support body 35 is a cylinder, and a channel with an inverted L-shaped cross-section is provided on the support body 35, the clamping body 36 is fixed in the middle of the channel, the top of the support body 35 and the clamping body 36 form a first limiting opening 31 for limiting the first hose 9, and the clamping body 36 and the button 8 form a second limiting opening 32 for limiting the second hose 10. The clamping body 36 includes a semicircular fixing plate 361, the straight edge of which is fixedly connected to the supporting body 35, a first clamping rod 362 is provided on the top surface of the fixing plate 361, and a second clamping rod 363 is provided on the bottom surface of the fixing plate 361, and the function of the fixing plate 361 is to fix the first clamping rod 362 and the second clamping rod 363 on the supporting body 35; the first clamping rod 362 and the second clamping rod 363 are both perpendicular to the supporting body 35, and one end thereof is connected to the supporting body 35, and the other end is away from the supporting body 35.

[0035] like Figure 8 As shown, the first clamping rod 362 includes a first clamping surface 362a, the first clamping surface 362a is opposite to the first clamping tube axis 23, and the width of the first clamping surface 362a is smaller than the width of the side of the first clamping rod 362 adjacent to the first clamping surface 362a; the second clamping rod 363 includes a second clamping surface 363a, the second clamping surface 363a is opposite to the second clamping tube axis 24, and the width of the second clamping surface 363a is smaller than the width of the side of the second clamping rod 363 adjacent to the second clamping surface 363a. When the first hose 9 is put into the first limit opening 31, the bottom of the first hose 9 is in direct contact with the first clamping surface 362a. When the first hose 9 is squeezed, the first clamping surface 362a is pressed tightly together with the first clamping shaft 23. Therefore, the width of the first clamping surface 362a is narrower than the other side surfaces of the first clamping rod 362. The force-bearing area of ​​the first hose 9 is relatively small, and the pressure it receives is relatively large. The first hose 9 is tightly blocked without leaving any gaps. Similarly, the second clamping surface 363a has the same principle as the first clamping surface 362a.

[0036] like Figure 8 As shown, the first clamping rod 362 also includes a first front side surface 362b, which is perpendicular to the inlet direction of the first hose 9. Because the first hose 9 is easily scratched against the corner between the first front side surface 362b and the first clamping surface 362a when being taken in and out from the first limit opening 31, which can easily cause the first hose 9 to rupture, a chamfer is provided between the first front side surface 362b and the first clamping surface 362a to prevent the first hose 9 from being scratched against the sharp corner and ruptured. The second clamping rod 363 also includes a second front side surface 363b, which is perpendicular to the inlet direction of the second hose 10. Similarly, the second hose 10 will also be scratched against the sharp corner and ruptured. A chamfer is provided between the second front side surface 363b and the second clamping surface 363a.

[0037] like Figure 3 , Figure 5 and Figure 6 As shown, the inlet and outlet 25 is concentrically arranged with the piston hole 6, and the diameter of the inlet and outlet 25 is larger than the diameter of the piston hole 6. The button 8 includes a connecting portion 81 for connecting with the support body 35 and a pressing portion 82 for pressing with a finger. The pressing portion 82 is integrally formed with the connecting portion 81. The diameter of the connecting portion 81 is equal to the diameter of the inlet and outlet 25 and is larger than the diameter of the piston hole 6, while the diameter of the pressing portion 82 is larger than the diameter of the inlet and outlet 25. When the button 8 is pressed, the diameter of the connecting portion 81 is consistent with the diameter of the inlet and outlet 25, so the inlet and outlet 25 can play a guiding role, so that when the button 8 is pushed, the piston 3 is evenly stressed and always straight upward without tilting, because the pressing The diameter of the part 82 is larger than the inlet and outlet 25, so the pressing part 82 will not enter the piston hole 6. At the same time, the diameter of the connecting part 81 is larger than the piston hole 6 and will not be extended into the piston hole 6. The connecting part 81 cooperates with the inlet and outlet 25, and the pressing part 82 cooperates with the inlet and outlet 25 to jointly limit the button 8 within a certain moving distance to prevent the moving iron core 7 and the valve core 4 (to be precise, the static iron core on the valve core 4) from colliding with each other every time the piston 3 is manually pushed, causing wear and shortening the service life. Preferably, the diameter of the pressing part 82 is equal to the diameter of the clamping valve body 2, so that the pressing part 82 and the clamping valve body 2 can be integrated, more beautiful, and not too abrupt.

[0038] The working principle of the present invention is as follows: when the power is suddenly cut off during the process of debugging the hose and the hose is to be replaced, due to the power outage, the piston 3 will be retracted, the second limit opening 32 and the second clamping opening 22 will be misaligned, the second clamping surface 363a and the second clamping shaft 24 will clamp the second hose 10, and the second hose 10 cannot be taken out for debugging, so the button 8 can be pushed toward the valve core 4 until the limit, and then the button 8 is pressed and held, the original second hose 10 is taken out, and a new second hose 10 is replaced to observe the debugging effect. If the replaced second hose 10 still does not work, a new one is replaced. During this process, the button 8 is pressed and held by hand until the second hose 10 is successfully adapted. During the power outage, the first limit opening 31 and the first clamping opening 21 are overlapped, so the first hose 9 can be taken out without pressing the button 8 by hand.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A dual-channel electromagnetic pinch valve, comprising a pinch valve body and a piston, wherein a longitudinal piston hole is provided inside the pinch valve body, the piston is provided in the piston hole, two clamping openings are transversely provided on the pinch valve body, which are divided into a first clamping opening and a second clamping opening, and a first pinching shaft and a second pinching shaft are also provided on the pinch valve body, characterized in that: The piston is provided with a first limiting opening for limiting the first hose and a second limiting opening for limiting the second hose, a first elongated hole for passing the first clamping tube shaft is provided at a position on the piston opposite to the first limiting opening, a second elongated hole for passing the second clamping tube shaft is provided at a position on the piston corresponding to the second limiting opening, the length of the first elongated hole is equal to the sum of the diameter of the first clamping tube shaft and the diameter of the first hose, the diameter of the second hose is equal to the diameter of the first hose, the diameter of the second clamping tube shaft is equal to the diameter of the first clamping tube shaft, the length of the second elongated hole is equal to the length of the first elongated hole, a button is fixedly connected to the bottom of the piston, an inlet and outlet for the button to pass through is provided at the bottom of the clamping valve body, and the inlet and outlet are communicated with the piston hole; The piston includes an outer supporting body and an inner clamping body, wherein the supporting body is a cylinder and is provided with a channel having an inverted L-shaped cross-section, wherein the clamping body is fixed in the middle of the channel, wherein the top of the supporting body and the clamping body form the first limiting opening for limiting the first hose, and the clamping body and the button form the second limiting opening for limiting the second hose.

2. A dual-channel electromagnetic pinch valve as claimed in claim 1, characterized in that: The clamping body includes a fixing plate, a straight edge of which is fixedly connected to the supporting body, a first clamping rod is provided on the top surface of the fixing plate, and a second clamping rod is provided on the bottom surface of the fixing plate; the first clamping rod and the second clamping rod are both perpendicular to the supporting body, and one end of each is connected to the supporting body, and the other end is away from the supporting body.

3. A dual-channel electromagnetic pinch valve as claimed in claim 2, characterized in that: The first clamping rod includes a first clamping surface, the first clamping surface is opposite to the first clamping axis, and the width of the first clamping surface is smaller than the width of the side surface of the first clamping rod adjacent to the first clamping surface; the second clamping rod includes a second clamping surface, the second clamping surface is opposite to the second clamping axis, and the width of the second clamping surface is smaller than the width of the side surface of the second clamping rod adjacent to the second clamping surface.

4. A dual-channel electromagnetic pinch valve as claimed in claim 3, characterized in that: It also includes a shell and a valve core, wherein the valve core is longitudinally arranged in the shell, a push rod is arranged in the valve core, the lower end of the push rod is fixedly connected to the piston, and the first clamping port and the second clamping port are spaced apart from each other in the upper and lower parts.

5. A dual-channel electromagnetic pinch valve as claimed in claim 4, characterized in that: The first clamping shaft is closely located above the first clamping opening, and the second clamping shaft is closely located below the second clamping opening.

6. A dual-channel electromagnetic pinch valve as claimed in claim 5, characterized in that: The first clamping rod also includes a first front side surface, the first front side surface is perpendicular to the inlet direction of the first hose, and a chamfer is provided between the first front side surface and the first clamping surface; the second clamping rod also includes a second front side surface, the second front side surface is perpendicular to the inlet direction of the second hose, and a chamfer is provided between the second front side surface and the second clamping surface.

7. A dual-channel electromagnetic pinch valve as claimed in claim 6, characterized in that: The inlet and outlet are arranged concentrically with the piston hole, the diameter of the inlet and outlet is larger than the diameter of the piston hole, the button includes a connecting portion for connecting to the support body, the diameter of the connecting portion is less than or equal to the diameter of the inlet and outlet and larger than the diameter of the piston hole.

8. A dual-channel electromagnetic pinch valve as claimed in claim 7, characterized in that: The diameter of the connecting portion is equal to the diameter of the clamp valve body.

9. A dual-channel electromagnetic pinch valve as claimed in claim 8, characterized in that: The button also includes a pressing portion for pressing by a finger, the pressing portion is fixedly connected to the connecting portion, and the diameter of the pressing portion is equal to the diameter of the clamping valve body.

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