Flow regulating device with long service life and low maintenance

Abstract

The utility model discloses a flow regulating device with long service life and low maintenance. The flow regulating device comprises a linear guide rail, a ball screw is rotationally connected between the left end and the right end of the linear guide rail, a thin seam moving plate is fixedly connected to the upper end of a nut of the ball screw, thin seams which are evenly distributed are formed in the right end of the upper surface of the thin seam moving plate, an installation fixing plate is fixedly connected to the middle of the front side of the linear guide rail, and an exhaust fixing plate is arranged at the upper end of the installation fixing plate. A vent groove is formed in the exhaust fixing plate, a triangular groove is formed in the upper end of the vent groove, the front side of the slit moving plate is slidably connected to the upper surface of the exhaust fixing plate, the right end of the exhaust fixing plate is in threaded connection with an air inlet pipe connector, and the air inlet pipe connector communicates with the interior of the vent groove. The flow control linear change is better, the service life is longer, impurities in slits can be automatically cleaned, and the device is more suitable for automatic detection equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection, in particular to a flow regulating device with long service life and low maintenance. Background Art

[0002] At present, the various tests of self-closing valves, pressure regulators and electromagnetic shut-off valves are basically done manually. Traditional tests rely on manual twisting of ball valves to adjust the flow rate. The speed of twisting varies from person to person, and the test results vary greatly. Modern automated test benches use electric ball valves, which have some disadvantages. First, the flow control linearity is not good. Second, the high-frequency opening and closing life on the automatic test bench is not long. Third, the valve body comes with impurities, which can easily cause the ball valve to get stuck. First, the replacement cost is high, and second, the requirements for replacement personnel are high.

[0003] In the current industry, there is a method of using a manual ball valve plus a servo motor drive to solve the problem of motor life. However, after the ball valve is used for a long time and the inner sealing gasket is worn, the linearity of the flow control cannot meet the requirements. The structure of the overcurrent closing execution module published in patent CN113125144A is that the telescopic air outlet pipe includes a tube body one and a tube body two, the tube body one is open at both ends, the tube body one is arranged in the tube body two, and the outer diameter of the tube body one is adapted to the inner diameter of the tube body two, the tube body two is closed at one end and open at the other end, the tube body one is arranged in the open end of the tube body two, and an air outlet hole and an air outlet line are arranged along the axial direction of the tube body two, the air outlet is connected to the air outlet line, and the air outlet is located at the end away from the tube body one. This solution solves the linear change of flow control, but the sliding fit requirements of the tube body one and the tube body two are relatively high. After long-term use and wear, it is troublesome to replace and maintain. After the impurities block the fine gap, it needs to be removed and cleaned. For this reason, we propose a long-life and low-maintenance flow regulating device. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a long-life, low-maintenance flow regulating device with better linear change of flow control, longer service life, automatic cleaning of impurities in fine gaps, more suitable for automated detection equipment, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long-life, low-maintenance flow regulating device, comprising a linear guide rail;

[0006] Linear guide: A ball screw is rotatably connected between its left and right ends, and a slit moving plate is fixedly connected to the upper end of the nut of the ball screw, and evenly distributed slits are provided on the right end of the upper surface of the slit moving plate. A mounting plate is fixedly connected to the middle of the front side of the linear guide, and an exhaust fixing plate is provided on the upper end of the mounting plate. A ventilation groove is provided inside the exhaust fixing plate, and a triangular groove is provided on the upper end of the ventilation groove. The front side of the slit moving plate is slidably connected to the upper surface of the exhaust fixing plate, and an air intake pipe joint is threadedly connected to the right end of the exhaust fixing plate, and the air intake pipe joint is connected to the inside of the ventilation groove, and the air intake pipe joint is connected to the air outlet of an external air pump. The flow control linear change is better, the service life is longer, and impurities in the slit are automatically cleaned, which is more suitable for automated detection equipment.

[0007] Furthermore, a cleaning groove is opened at the upper end of the right side of the exhaust fixing plate, and the cleaning groove is located on the front side of the triangular groove. A high-pressure air pipe joint is inserted into the right side of the exhaust fixing plate, and the high-pressure air pipe joint is connected to the interior of the cleaning groove. The air inlet of the high-pressure air pipe joint is connected to the air inlet of an external air pump to clean the fine gap.

[0008] Furthermore, a sealing cylinder is fixedly connected to the left side of the exhaust fixing plate, the telescopic end of the sealing cylinder is located inside the ventilation groove, the right end fixed sleeve of the telescopic end of the sealing cylinder is provided with an air intake sealing gasket, the telescopic end of the sealing cylinder corresponds to the left and right positions of the intake pipe joint, and the air inlet of the sealing cylinder is connected to the air inlet of an external air pump to realize the sealing test.

[0009] Furthermore, a cylinder sealing gasket is provided between the left side of the exhaust fixing plate and the sealing cylinder to prevent leakage from occurring at the connection position between the sealing cylinder and the exhaust fixing plate.

[0010] Furthermore, a motor is fixedly connected to the left side of the linear guide rail, and the output shaft of the motor is fixedly connected to the left end of the ball screw through a coupling. The input end of the motor is electrically connected to the output end of the detection device controller to drive the ball screw to rotate.

[0011] Furthermore, a zero return sensor is connected to the right end of the linear guide rail via bolts, and the zero return sensor is bidirectionally electrically connected to the detection device controller to determine the zero point position.

[0012] Furthermore, the lower end of the exhaust fixing plate is fixedly connected with evenly distributed guide shafts, which pass through adjacent through holes of the mounting fixing plate respectively. Compression springs are movably sleeved on the outside of the guide shafts, and the compression springs are located between the mounting fixing plate and the exhaust fixing plate to automatically compensate for the wear gap between the slit moving plate and the exhaust fixing plate.

[0013] Furthermore, the slit movable plate is a ductile iron movable plate, and the exhaust fixed plate is a ductile iron fixed plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the long-life and low-maintenance flow regulating device has the following advantages:

[0015] 1. When testing the valve to be tested, the air inlet pipe joint sends air into the ventilation groove of the exhaust fixed plate, and the motor is controlled to rotate by the detection equipment controller. The zero return sensor determines the initial position of the slit moving plate. The output shaft of the motor drives the ball screw to rotate, and the slit moving plate moves to the right. The slit at the far left passes through the triangular groove, and the air flows out from the inside of the slit. The slit at the far left gradually moves to the left, and the gap between the slit at the far left and the triangular groove gradually increases, realizing linear adjustment of the flow rate. When the slit at the far left leaves the triangular groove, the second slit from left to right reaches the triangular groove position. Multiple slits are ventilated at the same time to achieve a larger flow adjustment range. The flow rate is controlled by the triangular groove and the slit, and the linear change of the flow control is better.

[0016] 2. The slit moving plate is a ductile iron moving plate, and the exhaust fixed plate is a ductile iron fixed plate. The surface is polished. The more it is used, the smoother and smoother it becomes, and the better the sealing. At the same time, the spring always pushes up the exhaust fixed plate. With the support of the spring and the guide shaft, the slit moving plate and the exhaust fixed plate are always kept together. They can automatically compensate after wear. Wear-resistant materials are selected, and the wear gap can be automatically compensated to increase the service life of the device.

[0017] 3. When the slit on the slit moving plate moves to the cleaning tank position, high-pressure gas enters the cleaning tank from the high-pressure gas pipe joint to clean the impurities in the gas. The slit is automatically cleaned when the slit moving plate moves, which reduces the number of maintenance times and is more suitable for automated testing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a front view schematic diagram of the structure of the utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of the exhaust fixing plate of the utility model structure.

[0021] In the figure: 1 motor, 2 coupling, 3 ball screw, 4 slit moving plate, 5 exhaust fixing plate, 6 sealing cylinder, 7 compression spring, 8 mounting fixing plate, 9 intake pipe joint, 10 return to zero sensor, 11 linear guide, 12 high pressure air pipe joint, 13 cylinder sealing gasket, 14 intake sealing gasket, 15 guide shaft, 16 triangular groove, 17 cleaning groove, 18 slit. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-3The present embodiment provides a technical solution: a long-life, low-maintenance flow regulating device, a linear guide rail 11: a ball screw 3 is rotatably connected between the left and right ends thereof, a slit movable plate 4 is fixedly connected to the upper end of the nut of the ball screw 3, and a uniformly distributed slit 18 is provided at the right end of the upper surface of the slit movable plate 4, a mounting plate 8 is fixedly connected to the middle of the front side of the linear guide rail 11, an exhaust fixing plate 5 is provided at the upper end of the mounting fixing plate 8, a ventilation groove is provided inside the exhaust fixing plate 5, and a triangular groove 16 is provided at the upper end of the ventilation groove, the front side of the slit movable plate 4 is slidably connected to the upper surface of the exhaust fixing plate 5, and the right end of the exhaust fixing plate 5 is threaded An air inlet pipe joint 9 is connected, the air inlet pipe joint 9 is connected to the inside of the ventilation groove, the air inlet pipe joint 9 is connected to the air outlet of the external air pump, the left side of the linear guide 11 is fixedly connected with a motor 1, the output shaft of the motor 1 is fixedly connected to the left end of the ball screw 3 through a coupling 2, the input end of the motor 1 is electrically connected to the output end of the detection device controller, the right end of the linear guide 11 is connected with a zero return sensor 10 through bolts, the zero return sensor 10 is bidirectionally electrically connected to the detection device controller, the lower end of the exhaust fixing plate 5 is fixedly connected with evenly distributed guide shafts 15, the guide shafts 15 respectively pass through the through holes adjacent to the mounting fixing plate 8, and the outside of the guide shafts 15 are evenly The movable sleeve is provided with a compression spring 7, and the compression spring 7 is located between the installation fixing plate 8 and the exhaust fixing plate 5. The slit movable plate 4 is a ductile iron movable plate, and the exhaust fixing plate 5 is a ductile iron fixing plate. When the valve to be detected is detected, the air inlet pipe joint 9 sends air into the ventilation groove of the exhaust fixing plate 5, and the motor 1 is controlled to rotate by the detection equipment controller, and the return to zero sensor 10 determines the initial position of the slit movable plate 4. The output shaft of the motor 1 drives the ball screw 3 to rotate, and the slit movable plate 4 moves to the right. The slit 18 at the far left passes through the triangular groove 16, and the air flows out from the inside of the slit 18. The slit 18 at the far left gradually moves to the left. The gap between the slit 18 at the end and the triangular groove 16 gradually increases to achieve linear flow regulation. When the slit 18 at the far left leaves the triangular groove 16, the second slit 18 from left to right reaches the position of the triangular groove 16. Multiple slits 18 are ventilated at the same time to achieve a larger flow regulation range. The slit moving plate 4 is a ductile iron moving plate, and the exhaust fixed plate 5 is a ductile iron fixed plate. The surface is polished and becomes smoother and smoother with use, and the sealing is better. At the same time, the spring 7 always pushes up the exhaust fixed plate 5. Under the support of the spring 7 and the guide shaft 15, the slit moving plate 4 and the exhaust fixed plate 5 are always kept in contact with each other, and they can automatically compensate after wear.

[0024] A cleaning groove 17 is provided at the upper end of the right side of the exhaust fixing plate 5, and the cleaning groove 17 is located at the front side of the triangular groove 16. A high-pressure gas pipe joint 12 is plugged into the right side of the exhaust fixing plate 5, and the high-pressure gas pipe joint 12 is connected to the inside of the cleaning groove 17. The air inlet of the high-pressure gas pipe joint 12 is connected to the air inlet of the external air pump. When the slit 18 on the slit moving plate 4 moves to the cleaning groove 17 position, the high-pressure gas enters the inside of the cleaning groove 17 from the high-pressure gas pipe joint 12 to clean the impurities in the gas.

[0025] A sealing cylinder 6 is fixedly connected to the left side of the exhaust fixing plate 5, and the telescopic end of the sealing cylinder 6 is located inside the ventilation groove. The right end of the telescopic end of the sealing cylinder 6 is fixedly sleeved with an air intake sealing gasket 14. The telescopic end of the sealing cylinder 6 corresponds to the left and right positions of the intake pipe joint 9. The air inlet of the sealing cylinder 6 is connected to the air inlet of the external air pump. A cylinder sealing gasket 13 is arranged between the left side of the exhaust fixing plate 5 and the sealing cylinder 6. When performing a sealing experiment, the telescopic end of the sealing cylinder 6 is pushed out, and the sealing gasket 14 presses the intake pipe joint 9 to achieve complete sealing and detect the sealing performance. The cylinder sealing gasket 13 prevents leakage at the connection position of the sealing cylinder 6 and the exhaust fixing plate 5.

[0026] The utility model provides a long-life, low-maintenance flow regulating device having the following working principle: the intake pipe joint 9, the high-pressure air pipe joint 12 and the sealing cylinder 6 are respectively connected to the external air pump. When the valve to be detected is detected, the intake pipe joint 9 sends air into the ventilation groove of the exhaust fixing plate 5, and the motor 1 is controlled to rotate by the detection device controller. The return-to-zero sensor 10 determines the initial position of the slit movable plate 4. The output shaft of the motor 1 drives the ball screw 3 to rotate, and the slit movable plate 4 moves to the right. The slit 18 at the far left passes through the triangular groove 16, and the air flows out from the inside of the slit 18. The slit 18 at the far left gradually moves to the left, and the gap between the slit 18 at the far left and the triangular groove 16 gradually increases, so as to realize linear regulation of the flow rate. When the slit 18 at the far left leaves the triangular groove 16, the second slit 18 from left to right reaches the position of the triangular groove 16, and multiple The slits 18 are ventilated at the same time to achieve a larger flow adjustment range. The slit movable plate 4 is a ductile iron movable plate, and the exhaust fixed plate 5 is a ductile iron fixed plate. The surface is polished and becomes smoother and smoother with use, and the sealing is better. At the same time, the spring 7 always pushes up the exhaust fixed plate 5. With the support of the spring 7 and the guide shaft 15, the slit movable plate 4 and the exhaust fixed plate 5 are always kept in contact with each other, and they can automatically compensate after wear. When the slit 18 on the slit movable plate 4 moves to the cleaning tank 17 position, the high-pressure gas enters the inside of the cleaning tank 17 from the high-pressure gas pipe joint 12 to clean up the impurities in the gas. When the sealing experiment is carried out, the telescopic end of the sealing cylinder 6 is pushed out, and the sealing gasket 14 presses the intake pipe joint 9 to achieve complete sealing and detect the sealing performance. The cylinder sealing gasket 13 prevents leakage at the connection position between the sealing cylinder 6 and the exhaust fixed plate 5.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A long-life, low-maintenance flow control device, characterized in that: comprising a linear guide rail (11); The linear guide rail (11) is rotatably connected between the left and right ends thereof, the upper end of the nut of the ball screw rod (3) is fixedly connected to a slit movable plate (4), the right end of the upper surface of the slit movable plate (4) is provided with uniformly distributed slits (18), the middle part of the front side of the linear guide rail (11) is fixedly connected to a mounting plate (8), the upper end of the mounting plate (8) is provided with an exhaust fixing plate (5), the interior of the exhaust fixing plate (5) is provided with a ventilation groove, the upper end of the ventilation groove is provided with a triangular groove (16), the front side of the slit movable plate (4) is slidably connected to the upper surface of the exhaust fixing plate (5), the right end of the exhaust fixing plate (5) is threadedly connected to an air intake pipe joint (9), the air intake pipe joint (9) is connected to the interior of the ventilation groove, and the air intake pipe joint (9) is connected to the air outlet of an external air pump.

2. A long-life, low-maintenance flow control device according to claim 1, characterized in that: A cleaning groove (17) is provided at the upper end of the right side of the exhaust fixing plate (5), and the cleaning groove (17) is located in front of the triangular groove (16). A high-pressure air pipe joint (12) is plugged into the right side of the exhaust fixing plate (5), and the high-pressure air pipe joint (12) is connected to the inside of the cleaning groove (17). The air inlet of the high-pressure air pipe joint (12) is connected to the air inlet of an external air pump.

3. A long-life, low-maintenance flow control device according to claim 1, characterized in that: The left side of the exhaust fixing plate (5) is fixedly connected with a sealing cylinder (6), the telescopic end of the sealing cylinder (6) is located inside the ventilation groove, the right end of the telescopic end of the sealing cylinder (6) is fixedly sleeved with an intake sealing gasket (14), the telescopic end of the sealing cylinder (6) corresponds to the left and right positions of the intake pipe joint (9), and the intake port of the sealing cylinder (6) is connected to the intake port of an external air pump.

4. A long-life, low-maintenance flow control device according to claim 1, characterized in that: A cylinder sealing gasket (13) is provided between the left side of the exhaust fixing plate (5) and the sealing cylinder (6).

5. A long-life, low-maintenance flow control device according to claim 1, characterized in that: A motor (1) is fixedly connected to the left side of the linear guide rail (11); the output shaft of the motor (1) is fixedly connected to the left end of the ball screw (3) via a coupling (2); and the input end of the motor (1) is electrically connected to the output end of the detection device controller.

6. A long-life, low-maintenance flow control device according to claim 1, characterized in that: The right end of the linear guide rail (11) is connected to a zero return sensor (10) via a bolt, and the zero return sensor (10) is bidirectionally electrically connected to a detection device controller.

7. A long-life, low-maintenance flow control device according to claim 1, characterized in that: The lower end of the exhaust fixing plate (5) is fixedly connected with evenly distributed guide shafts (15), and the guide shafts (15) respectively pass through adjacent through holes of the mounting fixing plate (8). Compression springs (7) are movably sleeved on the outside of the guide shafts (15), and the compression springs (7) are located between the mounting fixing plate (8) and the exhaust fixing plate (5).

8. A long-life, low-maintenance flow control device according to claim 1, characterized in that: The slit movable plate (4) is a ductile iron movable plate, and the exhaust fixed plate (5) is a ductile iron fixed plate.

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