Manual pinch valve driven by lead screw and suitable for proportional adjustment of large-diameter high-hardness hose

Abstract

The utility model discloses a lead screw driven manual pinch valve suitable for proportional adjustment of a large-diameter high-hardness hose. The lead screw driven manual pinch valve comprises a driving system, a clamping system and a valve body. The clamping system is arranged in the valve body, and the driving system is located outside the valve body and connected with the clamping system. The clamping system comprises a bearing nut and a piston chuck; the driving system comprises a lead screw bushing, a lead screw and an adjusting handle; the lower end of the screw rod bushing is mounted at the bottom of the valve body through a sunk screw, and a mounting flange is sleeved outside the screw rod bushing and is mounted on the screw rod bushing through a sunk screw; the screw rod is inserted into the screw rod bushing, and the upper end of the screw rod is fastened through the locking nut; the adjusting handle is inserted into a rectangular column at the upper end of the lead screw and then is locked and fixed through a flange nut with flower teeth. The hydraulic clamping device is compact in structure, low in noise, large in clamping force, capable of achieving flow proportion control and capable of achieving clamping keeping.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary products of electric pinch valve components, in particular to a screw-driven manual pinch valve suitable for proportional regulation of large-caliber and high-hardness hoses. Background Art

[0002] The main form of the existing pinch valve on the market is the spiral solenoid pinch valve. However, there is a blank market in the Chinese market for manual pinch valves, electric pinch valves and pneumatic pinch valves. The spiral solenoid pinch valve occupies a dominant position in small-diameter and low-hardness hose fittings. It has the advantages of simple structure, small size, low cost, simple operation, and reliable action to control the on-off of the flow path. The manual pinch valve converts the movement of the screw rod into linear motion by manual adjustment to realize the opening and closing of the valve. It has an absolute advantage for silicone braided tubes, C-Flex, PVC, TYGON, and TPU tubes with large diameters or high hardness (80 Shore A), and the hose can be closed without compressed air and power supply in the application site. With the gradual changes in the current market, customer needs have been iterating. The domestic food and beverage industry is developing rapidly, and a large number of them have appeared on the streets and shopping malls. Beverage vending machines, milk tea vending machines and coffee machines, etc., and the medium often contains particles. The diameter of the hose used is usually larger, and there are also requirements for the medium flow rate, so a pinch valve with a larger opening can be achieved; at the same time, in terms of cost control, attention should be paid to the degree of standardization of the design during development to ensure the interchangeability of parts of different types of valves with brushless motor pinch valves, reduce repeated design and processing, reduce product costs, improve parts interchangeability, and apply according to specific industries (biopharmaceuticals, food packaging, packaging, etc.); therefore, it is necessary to develop a new type of manually driven pinch valve, which does not require additional arrangement of the source to control a separate pinch valve like a pneumatic pinch valve. In some applications, additional compressed air is not required, and the manual pinch valve can meet the requirements within a certain range of pipe outer diameter and hardness, and can achieve flow rate proportional control through manual adjustment control. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a screw-driven manual clamping valve suitable for proportional adjustment of large-diameter and high-hardness hoses, which has a compact structure, low noise, high clamping force, can achieve proportional control of flow, and can be clamped and maintained.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a screw-driven proportional adjustment manual pinch valve suitable for large-caliber and high-hardness hoses, comprising a drive system, a clamping system and a valve body; the clamping system is placed in the valve body, the drive system is located outside the valve body and is connected to the clamping system;

[0006] The clamping system includes a bearing nut and a piston chuck; the driving system includes a screw bushing, a screw and an adjusting handle;

[0007] The lower end of the screw bushing is installed at the bottom of the valve body through a countersunk screw, and a mounting flange is arranged outside the screw bushing, and the mounting flange is installed on the screw bushing through a countersunk screw;

[0008] The screw rod is inserted into the screw rod bushing, and the upper end of the screw rod is fastened by a locking nut; the adjustment handle is inserted into the rectangular column at the upper end of the screw rod, and then locked and fixed by a flange nut with flower teeth;

[0009] The bearing nut is installed on the screw rod and is threadedly connected to the screw rod; roller bearings are installed at both ends of the bearing nut, and a slide groove corresponding to the roller bearing is opened on the inner wall of the valve body, and the roller bearing is placed in the slide groove; the piston chuck is installed on the bearing nut through a hexagon socket plug;

[0010] The valve body is provided with an opening for placing a high-hardness hose, a cylindrical pin is transversely mounted on the valve body through a set screw, and the cylindrical pin and a piston chuck are located on both sides of the opening.

[0011] Furthermore, a safety baffle is installed at the opening position of the valve body, and the safety baffle is locked on the valve body by hand screws.

[0012] Furthermore, a product label is attached to the valve body.

[0013] Furthermore, the bottom of the piston chuck has an arc transition.

[0014] The beneficial effects of the utility model are as follows: the utility model has a compact structure, low noise, a large clamping force, can realize proportional control of flow rate, and can be clamped and maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses provided by the utility model;

[0017] Figure 2 A schematic diagram of another perspective of a screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses provided by the utility model;

[0018] Figure 3A schematic diagram of another perspective of a screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses provided by the utility model;

[0019] Figure 4 A schematic diagram of the split structure of a screw-driven manual pinch valve suitable for proportional adjustment of large-diameter and high-hardness hoses provided by the utility model;

[0020] Figure 5 A cross-sectional view of a screw-driven manual pinch valve suitable for proportional adjustment of large-diameter and high-hardness hoses provided by the utility model;

[0021] Figure 6 A cross-sectional view from another perspective of a screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses provided by the utility model;

[0022] Figure 7 A cross-sectional schematic diagram of a screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses provided by the utility model after the piston chuck moves from another perspective;

[0023] Figure 8 for Figure 6 A magnified view of point A;

[0024] Fig. 9 A schematic diagram of the bottom of a screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses provided by the utility model;

[0025] Fig.10 The utility model provides a schematic diagram of the top of a screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses.

[0026] Explanation of the reference numerals: 1. Valve body; 2. Slide groove; 3. Screw bushing; 4. Locking nut; 5. Screw; 6. Flange nut with teeth; 7. Adjusting handle; 8. Cylindrical pin; 9. Opening; 10. Bearing nut; 11. Piston chuck; 12. Hexagon socket head plug; 13. Roller bearing; 14. Countersunk screw; 15. Mounting flange; 16. Set screw; 17. Safety baffle; 18. Product label; 19. Thumb screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-10As shown, a manual pinch valve for proportional adjustment of large-caliber and high-hardness hoses driven by a screw rod 5 comprises a driving system, a clamping system and a valve body 1; the clamping system is placed inside the valve body 1, and the driving system is located outside the valve body 1 and connected to the clamping system;

[0029] The clamping system includes a bearing nut 10 and a piston chuck 11; the driving system includes a screw bushing 3, a screw 5 and an adjustment handle 7;

[0030] The lower end of the screw bushing 3 is mounted on the bottom of the valve body 1 through a countersunk screw 14, and a mounting flange 15 is disposed on the screw bushing 3. The mounting flange 15 is mounted on the screw bushing 3 through the countersunk screw 14. The device can be mounted on the valve body 1 through the mounting flange 15.

[0031] The screw rod 5 is inserted into the screw rod bushing 3, and the upper end of the screw rod 5 is fastened by the locking nut 4; the adjustment handle 7 is inserted into the rectangular column at the upper end of the screw rod 5, and then locked and fixed by the toothed flange nut 6;

[0032] The bearing nut 10 is installed on the screw rod 5 and is threadedly connected to the screw rod 5; roller bearings 13 are installed at both ends of the bearing nut 10, and a slide groove 2 corresponding to the roller bearing 13 is opened on the inner wall of the valve body 1, and the roller bearing 13 is placed in the slide groove 2; the piston chuck 11 is installed on the bearing nut 10 through the hexagon socket plug 12;

[0033] The valve body 1 is provided with an opening 9 for inserting a high-hardness hose, and a cylindrical pin 8 is transversely mounted on the valve body 1 through a set screw 16, and the cylindrical pin 8 and the piston chuck 11 are located on both sides of the opening 9;

[0034] A safety baffle 17 is installed at the opening 9 of the valve body 1 , and the safety baffle 17 is locked on the valve body 1 by hand screws 19 .

[0035] The valve body 1 is affixed with a product label 18;

[0036] The bottom of the piston chuck 11 has an arc transition to prevent contact with the hose and affect the life of the pipe fitting.

[0037] Working principle:

[0038] The pipe fitting is inserted into the groove inside the valve body 1 through the opening 9; when in use, the adjusting handle 7 is rotated, the adjusting handle 7 is connected to the screw rod 5 and then drives the screw rod 5 to rotate, the screw rod 5 and the bearing nut 10 are screwed together, and the bearing nut 10 is restricted by the roller bearing 13, and the bearing nut 10 drives the piston chuck 11 to move linearly inside the valve body 1;

[0039] The slide groove 2 and the roller bearing 13 on the inner wall of the valve body 1 mechanically limit the stroke of the piston chuck 11 to prevent the screw rod 5 from locking the pipe fitting with excessive compression, thereby increasing the service life and reducing the adhesion of the pipe fitting.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A screw-driven proportional adjustment manual pinch valve suitable for large-caliber and high-hardness hoses, comprising a drive system, a clamping system and a valve body; the clamping system is placed in the valve body, the drive system is located outside the valve body and connected to the clamping system; characterized in that: The clamping system includes a bearing nut and a piston chuck; the driving system includes a screw bushing, a screw and an adjusting handle; The lower end of the screw bushing is installed at the bottom of the valve body through a countersunk screw, and a mounting flange is arranged outside the screw bushing, and the mounting flange is installed on the screw bushing through a countersunk screw; The screw rod is inserted into the screw rod bushing, and the upper end of the screw rod is fastened by a locking nut; the adjustment handle is inserted into the rectangular column at the upper end of the screw rod, and then locked and fixed by a flange nut with flower teeth; The bearing nut is installed on the screw rod and is threadedly connected to the screw rod; roller bearings are installed at both ends of the bearing nut, and a slide groove corresponding to the roller bearing is opened on the inner wall of the valve body, and the roller bearing is placed in the slide groove; the piston chuck is installed on the bearing nut through a hexagon socket plug; The valve body is provided with an opening for placing a high-hardness hose, a cylindrical pin is transversely mounted on the valve body through a set screw, and the cylindrical pin and a piston chuck are located on both sides of the opening.

2. A screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses according to claim 1, characterized in that: A safety baffle is installed at the opening position of the valve body, and the safety baffle is locked on the valve body by hand screws.

3. A screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses according to claim 1 or 2, characterized in that: A product label is attached to the valve body.

4. A screw-driven proportional adjustment manual pinch valve suitable for large-diameter and high-hardness hoses according to claim 3, characterized in that: The bottom of the piston chuck has an arc transition.

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