Manual and automatic integrated pinch valve

Abstract

The utility model provides a manual and automatic integrated pinch valve, which is characterized in that a motor and a hand wheel are arranged on one side of a shell far away from a hose, and an output shaft of the motor and a central shaft of the hand wheel are respectively matched with a screw rod through a transmission; an upper pressing rod and a lower pressing rod of a clamping assembly arranged in the shell are arranged on the two sides of the pipe wall of the hose respectively to extrude or relieve compression on the hose, and a screw rod is in threaded fit with the upper pressing rod or the lower pressing rod of the clamping assembly. Opening and closing of the pinch valve can be achieved through automatic control of the motor or manual control of the hand wheel, and the applicability of the pinch valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hose valves, in particular to a manual-automatic integrated clamping valve. Background Art

[0002] A pinch valve is a valve that uses pneumatic, electric, hydraulic or manual driving methods to squeeze the hose to achieve the function of switching / adjusting. Existing pinch valves usually have clamping components on both sides of the hose to be clamped, and the clamping components are driven to move automatically or manually to squeeze the hose. Among them, manual pinch valves require manual operation every time they are adjusted, and the response speed is slow; automatic pinch valves are quick and convenient, and can be remotely controlled, but the maintenance requirements of electronic control components are higher, and the control ability of the pinch valve will be lost in special environments such as power outages.

[0003] The patent entitled "An automatic manual integrated pinch valve" (CN219734365U) discloses a technical solution, which can control the displacement of the pinch assembly to squeeze the hose through an external controller or a manual button 1. However, the manual button 1 of the pinch valve still needs to communicate with the circuit board 8, and the above solution is applied to the field of biopharmaceutical equipment, and can even be provided with a built-in power drive when necessary, but the solution is only suitable for pinch valves with lower power, and cannot be applied to pinch valves with large flow hoses. Utility Model Content

[0004] The utility model aims to provide a manual and automatic integrated pinch valve, and a motor and a hand wheel are arranged at the same time to realize multiple control modes of the pinch valve.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a manual-automatic integrated clamping valve, a shell is provided with a through hole for accommodating a hose, a motor and a hand wheel are provided on the side of the shell away from the hose, the output shaft of the motor and the central axis of the hand wheel are respectively matched with a screw through a transmission, a clamping assembly is provided in the shell, an upper pressure rod and a lower pressure rod of the clamping assembly are arranged opposite to each other and are respectively placed on both sides of the tube wall of the hose, the screw is threadedly matched with the upper pressure rod of the clamping assembly, and the upper pressure rod and the lower pressure rod move closer to or away from each other to squeeze or release the pressure on the hose.

[0006] The utility model mainly sets the automatic control of the motor or the manual control of the hand wheel to control the clamping assembly through the cooperation of the screw rod, and realizes the opening and closing of the pinch valve through the relative movement of the upper pressure rod and the lower pressure rod of the clamping assembly. Under normal working conditions, the pinch valve can be controlled by the motor, which is easy and reliable to use. In special circumstances such as power failure, the pinch valve can still be controlled by manually controlling the hand wheel, thereby improving the applicability of the pinch valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is an isometric view of a pinch valve;

[0008] Figure 2 Isometric view of the pinch valve with the lower housing and lower shroud removed;

[0009] Figure 3 Bottom view of the pinch valve after removing the lower housing and lower shield;

[0010] Figure 4 Schematic diagram of the upper and lower pressure rods of the clamping assembly. DETAILED DESCRIPTION

[0011] See also Figures 1 to 4 The manual-automatic integrated clamp valve shown in the figure has a through hole for accommodating a hose A on the shell 1, a motor 10 and a hand wheel 20 are provided on the side of the shell 1 away from the hose A, the output shaft of the motor 10 and the central axis of the hand wheel 20 are respectively matched with the screw 30 through a transmission, a clamping assembly is provided in the shell 1, an upper pressure rod 41 and a lower pressure rod 42 of the clamping assembly are arranged opposite to each other and are respectively placed on both sides of the tube wall of the hose A, the screw 30 is threadedly matched with the upper pressure rod 41 of the clamping assembly, and the upper pressure rod 41 and the lower pressure rod 42 move closer to or away from each other to squeeze or release the pressure on the hose A.

[0012] In this embodiment, the housing 1 is a closed rectangular housing, and the length direction of the hose A is vertically inserted into the front and rear panels of the housing 1. The motor 10 and the hand wheel 20 can control the rotating screw 30 separately, and the rotation of the screw 30 drives the upper pressure rod 41 or the lower pressure rod 42 that is threadedly matched with the screw 30, so that the extrusion surfaces of the upper pressure rod 41 and the lower pressure rod 42 are close to each other or away from each other, respectively squeezing or releasing the pressure on the hose A to realize the opening and closing of the pinch valve. During normal operation, the opening and closing of the pinch valve is controlled by the motor, and the control can be connected to the communication signal, which is efficient and convenient to use; in the event of an emergency such as a power outage in the factory area, the pinch valve can still be controlled by manually operating the hand wheel, which improves the applicability of the pinch valve.

[0013] To facilitate the connection of the hose A, flanges A1 are provided at both ends of the hose A extending out of the housing 1, and a hose shield 50 surrounding the hose A is connected between the flange A1 and the surface of the housing 1. The hose shield 50 can effectively protect the hose A extending out of the housing 1.

[0014] In order to facilitate the installation and removal of the hose A on the pinch valve, the hose shield 50 includes an upper shield 51 and a lower shield 52 connected in a half-joint manner, and the contacting end surfaces of the upper shield 51 and the lower shield 52 respectively extend radially with an upper flange 511 and a lower flange 521 for bolt connection. The housing 1 includes an upper housing 1a and a lower housing 1b connected in a half-joint manner, and the joint surface of the upper housing 1a and the lower housing 1b is coplanar with the joint surface of the upper shield 51 and the lower shield 52. In the above scheme, when the hose A needs to be disassembled, it is only necessary to disassemble the bolts connected on the upper flange 511 and the lower flange 521, so that the lower shield 52 and the lower housing 1b can be separated from the upper shield 51 and the upper housing 1a, so as to facilitate the replacement of the hose A.

[0015] Preferably, in order to improve the stability of the displacement of the clamping assembly, the two ends of the upper pressure rod 41 and the lower pressure rod 42 are respectively mounted on a group of guide rods 60, and the direction in which the upper pressure rod 41 and the lower pressure rod 42 approach or move away from each other is consistent with the rod length direction of the guide rod 60, and the two ends of the guide rod 60 are respectively connected to the shell 1.

[0016] In order to improve the squeezing effect of the clamping assembly on the hose A, the opposite surfaces of the upper pressing rod 41 and the lower pressing rod 42 squeezing the hose A are respectively an arc-shaped upper cylindrical surface 411 and a lower cylindrical surface 421, and the curvature axis direction of the upper cylindrical surface 411 and the lower cylindrical surface 421 is perpendicular to the tube length direction of the hose A. The arc-shaped surfaces of the upper pressing rod 41 and the lower pressing rod 42 directly contact the tube wall of the hose A. Compared with the flat squeezing surface, the arc-shaped surface has no edges and corners, which can better protect the hose A and reduce the wear of the tube wall. In addition, the force position of the hose A squeezed by the arc-shaped surface is more concentrated, which is conducive to improving the squeezing effect of the clamping assembly.

Claims

1. A manual-automatic integrated pinch valve, characterized in that: A through hole for accommodating a hose (A) is provided on the shell (1). A motor (10) and a hand wheel (20) are provided on the side of the shell (1) away from the hose (A). The output shaft of the motor (10) and the central axis of the hand wheel (20) are respectively matched with a screw rod (30) through a transmission. A clamping assembly is provided in the shell (1). An upper pressure rod (41) and a lower pressure rod (42) of the clamping assembly are arranged opposite to each other and are respectively placed on both sides of the tube wall of the hose (A). The screw rod (30) is threadedly matched with the upper pressure rod (41) of the clamping assembly. The upper pressure rod (41) and the lower pressure rod (42) move closer to or away from each other to squeeze or release the pressure on the hose (A).

2. The manual-automatic integrated pinch valve according to claim 1, characterized in that: Both ends of the hose (A) extending out of the shell (1) are respectively provided with flanges (A1), and a hose shield (50) surrounding the hose (A) is connected between the flange (A1) and the surface of the shell (1).

3. The manual-automatic integrated pinch valve according to claim 2, characterized in that: The hose shield (50) comprises an upper shield (51) and a lower shield (52) connected in a Hough-type fitting manner, and the contacting end surfaces of the upper shield (51) and the lower shield (52) respectively extend radially with an upper flange edge (511) and a lower flange edge (521) for bolt connection.

4. The manual-automatic integrated pinch valve according to claim 3, characterized in that: The housing (1) comprises an upper housing (1a) and a lower housing (1b) connected in a Hough-style fit, wherein the joint surface of the upper housing (1a) and the lower housing (1b) is coplanar with the joint surface of the upper shield (51) and the lower shield (52).

5. The manual-automatic integrated pinch valve according to claim 1, characterized in that: The two ends of the upper pressure rod (41) and the lower pressure rod (42) are respectively sleeved on a group of guide rods (60). The direction in which the upper pressure rod (41) and the lower pressure rod (42) approach or move away from each other is consistent with the rod length direction of the guide rod (60). The two ends of the guide rod (60) are respectively connected to the housing (1).

6. The manual-automatic integrated pinch valve according to claim 1, characterized in that: The opposite surfaces of the upper pressing rod (41) and the lower pressing rod (42) for squeezing the hose (A) are arc-shaped upper cylindrical surfaces (411) and lower cylindrical surfaces (421), respectively. The curvature axis directions of the upper cylindrical surfaces (411) and the lower cylindrical surfaces (421) are perpendicular to the tube length direction of the hose (A).

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