A device for detecting pressure-driven membrane cracks

Abstract

The utility model provides a detection device for cracks in a pressure-driven membrane, and belongs to the field of membrane detection technology. It includes a bottom plate, two vertical plates fixed vertically on the bottom plate, a membrane clamping assembly that can clamp the pressure-driven membrane, and an infrared detection assembly. A square slide bar is connected between the two vertical plates, and the two membrane clamping assemblies are slidably arranged on the square slide bar. The infrared detection assembly includes a motor, a cylinder, a guide rod, a screw, a translation seat, a U-shaped slide, an infrared transmitter, and an infrared receiver. The motor is fixed on one side of one of the vertical plates and is connected to the screw power. The translation seat is sleeved on the two guide rods and slides along the guide rods. The lower end of the U-shaped slide is embedded in the guide slide groove and slides along the guide slide groove. The cylinder is fixed on the translation seat and the telescopic rod of the cylinder is connected to one end of the U-shaped slide. The infrared transmitter and the infrared receiver are respectively fixed on the upper end and the lower end of the U-shaped slide. The cracks on the pressure-driven membrane can be detected in all directions, with a high degree of automation and comprehensive detection.

Description

Technical Field

[0001] The utility model belongs to the technical field of membrane detection and relates to a detection device for pressure-driven membrane cracks. Background Art

[0002] In recent years, membrane separation technology has been widely used in wastewater treatment, water pollution prevention and control, and comprehensive utilization of water resources. Pressure-driven membranes are membranes that use a certain external pressure as a driving force for membrane filtration. Common pressure-driven membranes include reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and microfiltration (MF). Wastewater resource utilization refers to the recovery of valuable substances from wastewater discharged from the production process, such as residual products in the wastewater, or by-products that can be further utilized, or intermediate products that can be reused, etc., in order to fully utilize resources, reduce pollution, and obtain economic, social and environmental benefits. Once cracks appear in the pressure-driven membrane, the filtration effect will be poor and cannot meet the requirements. Therefore, the pressure-driven membrane needs to be tested for cracks before use. The error of observation with the naked eye is large, and small cracks that are invisible to the naked eye cannot be observed. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems in the existing technology and to propose a pressure-driven membrane crack detection device with a high degree of automation, which can automatically complete the crack detection of the entire pressure-driven membrane without manual supervision.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a pressure-driven membrane crack detection device, comprising a bottom plate, two vertical plates fixed vertically on the bottom plate, a membrane clamping assembly that can clamp the pressure-driven membrane, and an infrared detection assembly, characterized in that a square slide bar is connected between the two vertical plates, the two membrane clamping assemblies are slidably arranged on the square slide bar, the infrared detection assembly includes a motor, a cylinder, a guide rod, a screw, a translation seat, a U-shaped slide, an infrared transmitter, and an infrared receiver. The two guide rods are connected in parallel between the two vertical plates, and the screw rotates The U-shaped slide is dynamically connected between the two vertical plates, the motor is fixed on one side of one of the vertical plates and is connected to the screw power, the translation seat is sleeved on the two guide rods and slides along the guide rods, one end of the translation seat is threadedly connected to the screw, a guide groove is opened on the translation seat, the lower end of the U-shaped slide is embedded in the guide groove and slides along the guide groove, the cylinder is fixed on the translation seat and the telescopic rod of the cylinder is connected to one end of the U-shaped slide, the infrared transmitter and the infrared receiver are respectively fixed on the upper and lower ends of the U-shaped slide, and the upper and lower ends of the U-shaped slide are respectively located on the upper and lower surfaces of the clamped pressure-driven membrane.

[0005] The cylinder is used to drive the U-shaped slide to move laterally, so that the infrared transmitter and the infrared receiver can detect the pressure-driven membrane along the lateral direction. The motor drives the entire translation seat to move longitudinally, so that the infrared transmitter and the infrared receiver can detect the pressure-driven membrane along the longitudinal direction, thereby detecting the pressure-driven membrane in all directions.

[0006] Furthermore, the film clamping assembly includes a clamping seat that can slide along the square slide bar, an extension rod, and a clamp, the clamping seat is fixedly connected with a square sleeve, two extension rods are slidably arranged in the square sleeve, the clamp is fixed to the outer end of the extension rod, a gear is rotatably connected in the square sleeve, a turntable for driving the gear to rotate is passed through the gear, a rack is provided on one side of the extension rod, the gear is located between the two extension rods and both mesh with the rack. The film clamping assembly can be adjusted according to the size of the pressure-driven film, the lateral spacing of the clamps can be adjusted by moving the clamping seat along the square slide bar, and the longitudinal spacing of the clamps can be adjusted by rotating the turntable to drive the extension rod to slide out or slide into the square sleeve.

[0007] Furthermore, the square sleeve is provided with two linear guide rails, the lower end surface of the extension rod is provided with a strip groove, and the linear guide rails are embedded in the strip groove.

[0008] Furthermore, the extension rod is L-shaped, and a stop block is provided at the tail of the extension rod. The stop block can abut against the gear, and the stop block is used to prevent the extension rod from sliding outward and detaching from the square sleeve.

[0009] Furthermore, the infrared detection component also includes a controller and an alarm, both of which are fixed on the vertical plate, the infrared transmitter, infrared receiver and alarm are all connected to the controller, and the controller is connected to the motor and the cylinder and controls the start and stop of the motor and the cylinder.

[0010] The infrared transmitter and infrared receiver are respectively located on the upper and lower surfaces of the pressure-driven membrane. When there is no crack in the pressure-driven membrane, the infrared rays emitted by the infrared transmitter cannot be received by the infrared receiver. When there is a crack in the pressure-driven membrane, the infrared rays emitted by the infrared transmitter can be received by the infrared receiver, and the signal is transmitted to the controller. The controller transmits the shutdown signal to the motor and cylinder, and turns on the alarm to notify the staff.

[0011] Furthermore, the alarm is a warning light or a buzzer.

[0012] Furthermore, the U-shaped slide includes an upper crossbeam, a lower crossbeam and a vertical beam connecting the upper crossbeam and the lower crossbeam, the infrared transmitter is fixed on the upper crossbeam, the infrared receiver is fixed on the lower crossbeam, the telescopic rod of the cylinder is connected to the vertical beam, and the height of the clamp is located between the upper crossbeam and the lower crossbeam.

[0013] Compared with the prior art, the pressure-driven membrane crack detection device has the following advantages:

[0014] 1. It has two film clamping components, and the position of the clamps can be adjusted according to the size of the pressure-driven film, so that the pressure-driven film can be unfolded completely flat, avoiding wrinkles and improving the accuracy of infrared detection.

[0015] 2. It has an infrared detection component that can realize lateral and longitudinal movement and fully detect cracks on the pressure-driven membrane. It has a high degree of automation and comprehensive detection without manual supervision. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The pressure-driven membrane crack detection device is a three-dimensional Figure 1 .

[0017] Figure 2 The pressure-driven membrane crack detection device is a three-dimensional Figure 2 .

[0018] Figure 3 is a cross-sectional view of the diaphragm assembly.

[0019] Figure 4 It is a structural schematic diagram of a U-shaped slide.

[0020] In the figure, 1, bottom plate; 2, vertical plate; 3, film clamping assembly; 31, clamping seat; 32, extension rod; 33, clamp; 34, square sleeve; 35, gear; 36, turntable; 37, rack; 38, linear slide; 39, limit block; 4, infrared detection assembly; 41, motor; 42, cylinder; 43, guide rod; 44, screw; 45, translation seat; 46, U-shaped slide; 461, upper beam; 462, lower beam; 463, vertical beam; 47, infrared transmitter; 48, infrared receiver; 49, controller; 410, alarm; 5, square slide. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 , Figure 2 As shown, the detection device for pressure-driven membrane cracks includes a base plate 1, two vertical plates 2 vertically fixed on the base plate 1, a membrane clamping assembly 3 that can clamp the pressure-driven membrane, and an infrared detection assembly 4. A square slide bar 5 is connected between the two vertical plates 2, and the two membrane clamping assemblies 3 are slidably set on the square slide bar 5.

[0023] The infrared detection assembly 4 includes a motor 41, a cylinder 42, a guide rod 43, a screw rod 44, a translation seat 45, a U-shaped slide 46, an infrared transmitter 47, and an infrared receiver 48. The two guide rods 43 are connected in parallel between the two vertical plates 2. The screw rod 44 is rotatably connected between the two vertical plates 2. The motor 41 is fixed to one side of one of the vertical plates 2 and is connected to the screw rod 44. The translation seat 45 is sleeved on the two guide rods 43 and slides along the guide rods 43. One end of the seat 45 is threadedly connected to the screw rod 44, a guide groove is opened on the translation seat 45, the lower end of the U-shaped slide 46 is embedded in the guide groove and slides along the guide groove, the cylinder 42 is fixed on the translation seat 45 and the telescopic rod of the cylinder 42 is connected to one end of the U-shaped slide 46, the infrared transmitter 47 and the infrared receiver 48 are respectively fixed on the upper and lower ends of the U-shaped slide 46, and the upper and lower ends of the U-shaped slide 46 are respectively located on the upper and lower surfaces of the clamped pressure-driven membrane.

[0024] like Figure 3 As shown, the membrane clamping assembly 3 includes a clamping seat 31 that can slide along the square sliding bar 5, an extension rod 32, and a clamp 33. The clamping seat 31 is fixedly connected with a square sleeve 34. Two extension rods 32 are slidably provided in the square sleeve 34. The clamp 33 is fixed to the outer end of the extension rod 32. A gear 35 is rotatably connected in the square sleeve 34. A turntable 36 for driving the gear 35 to rotate is passed through the gear 35. A rack 37 is provided on one side of the extension rod 32. The gear 35 is located between the two extension rods 32 and is meshed with the rack 37.

[0025] The square sleeve 34 has two linear guide rails 38, and the lower end surface of the extension rod 32 has a strip groove, and the linear guide rails are embedded in the strip groove. The extension rod 32 is L-shaped, and the tail of the extension rod 32 has a limit block 39. The limit block 39 can abut against the gear 35, and the limit block 39 is used to prevent the extension rod 32 from sliding outward and leaving the square sleeve 34.

[0026] The infrared detection component 4 also includes a controller 49 and an alarm 410, which is a warning light or a buzzer. The controller 49 and the alarm 410 are both fixed on the vertical plate 2. The infrared transmitter 47, the infrared receiver 48 and the alarm 410 are all connected to the controller 49. The controller 49 is connected to the motor 41 and the cylinder 42 and controls the start and stop of the motor 41 and the cylinder 42.

[0027] like Figure 4 As shown, the U-shaped slide 46 includes an upper crossbeam 461, a lower crossbeam 462 and a vertical beam 463 connecting the upper crossbeam 461 and the lower crossbeam 462, the infrared transmitter 47 is fixed on the upper crossbeam 461, the infrared receiver 48 is fixed on the lower crossbeam 462, the telescopic rod of the cylinder 42 is connected to the vertical beam 463, and the height of the clamp 33 is located between the upper crossbeam 461 and the lower crossbeam 462.

[0028] Working process: first fix the pressure-driven membrane on the membrane clamping assembly 3. The membrane clamping assembly 3 can be adjusted according to the size of the pressure-driven membrane. Moving the clamp seat 31 along the square slide bar 5 can adjust the lateral spacing of the clamps 33. Turning the turntable 36 to drive the extension rod 32 to slide out or slide into the square sleeve 34 can adjust the longitudinal spacing of the clamps 33.

[0029] The cylinder 42 is used to drive the U-shaped slide 46 to move laterally, so that the infrared transmitter 47 and the infrared receiver 48 can detect the pressure-driven membrane along the horizontal direction. The motor 41 drives the entire translation seat 45 to move longitudinally, so that the infrared transmitter 47 and the infrared receiver 48 can detect the pressure-driven membrane along the longitudinal direction. Therefore, the infrared detection component 4 can detect the pressure-driven membrane in all directions.

[0030] The infrared transmitter 47 is located directly above the infrared receiver 48. The infrared transmitter 47 and the infrared receiver 48 are respectively located on the upper and lower surfaces of the pressure-driven membrane. When the pressure-driven membrane has no cracks, the infrared rays emitted by the infrared transmitter 47 cannot be received by the infrared receiver 48; when the pressure-driven membrane has cracks, the infrared rays emitted by the infrared transmitter 47 can be received by the infrared receiver 48, and the signal is transmitted to the controller 49. The controller 49 transmits a shutdown signal to the motor 41 and the cylinder 42, and at the same time turns on the alarm 410 to notify the staff.

[0031] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pressure-driven membrane crack detection device, comprising a base plate (1), two vertical plates (2) vertically fixed on the base plate (1), a membrane clamping component (3) capable of clamping the pressure-driven membrane, and an infrared detection component (4), characterized in that: A square slide bar (5) is connected between the two vertical plates (2), and two film clamping components (3) are slidably arranged on the square slide bar (5). The infrared detection component (4) comprises a motor (41), a cylinder (42), a guide rod (43), a screw rod (44), a translation seat (45), a U-shaped slide frame (46), an infrared transmitter (47), and an infrared receiver (48). The two guide rods (43) are connected in parallel between the two vertical plates (2), the screw rod (44) is rotatably connected between the two vertical plates (2), the motor (41) is fixed on one side of one of the vertical plates (2) and is connected to the screw rod (44) by power, and the translation seat (45) is sleeved on the two guide rods (43) and slides along the guide rods (43), one end of the translation seat (45) is threadedly connected to the screw rod (44), a guide groove is opened on the translation seat (45), the lower end of the U-shaped slide (46) is embedded in the guide groove and slides along the guide groove, the cylinder (42) is fixed on the translation seat (45) and the telescopic rod of the cylinder (42) is connected to one end of the U-shaped slide (46), the infrared transmitter (47) and the infrared receiver (48) are respectively fixed on the upper and lower ends of the U-shaped slide (46), and the upper and lower ends of the U-shaped slide (46) are respectively located on the upper and lower surfaces of the clamped pressure-driven membrane.

2. A pressure-driven membrane crack detection device according to claim 1, characterized in that: The film clamping assembly (3) comprises a clamping seat (31) which can slide along the square slide bar (5), an extension rod (32), and a clamp (33); the clamping seat (31) is fixedly connected with a square sleeve (34); two extension rods (32) are slidably arranged in the square sleeve (34); the clamp (33) is fixed to the outer end of the extension rod (32); a gear (35) is rotatably connected in the square sleeve (34); a turntable (36) for driving the gear (35) to rotate is passed through the gear (35); a rack (37) is provided on one side of the extension rod (32); the gear (35) is located between the two extension rods (32) and is meshed with the rack (37).

3. A pressure-driven membrane crack detection device according to claim 2, characterized in that: The square sleeve (34) has two linear guide rails (38) in it, and the lower end surface of the extension rod (32) has a strip groove, and the linear guide rails are embedded in the strip groove.

4. A pressure-driven membrane crack detection device according to claim 3, characterized in that: The extension rod (32) is L-shaped, and a limiting block (39) is provided at the tail of the extension rod (32).

5. A pressure-driven membrane crack detection device according to claim 4, characterized in that: The infrared detection assembly (4) further comprises a controller (49) and an alarm (410), wherein the controller (49) and the alarm (410) are both fixed on the vertical plate (2), the infrared transmitter (47), the infrared receiver (48) and the alarm (410) are all connected to the controller (49), and the controller (49) is connected to the motor (41) and the cylinder (42) and controls the start and stop of the motor (41) and the cylinder (42).

6. A pressure-driven membrane crack detection device according to claim 5, characterized in that: The alarm (410) is a warning light or a buzzer.

7. A pressure-driven membrane crack detection device according to claim 6, characterized in that: The U-shaped slide (46) comprises an upper crossbeam (461), a lower crossbeam (462) and a vertical beam (463) connecting the upper crossbeam (461) and the lower crossbeam (462); an infrared transmitter (47) is fixed on the upper crossbeam (461); an infrared receiver (48) is fixed on the lower crossbeam (462); a telescopic rod of the cylinder (42) is connected to the vertical beam (463); and the height of the clip (33) is located between the upper crossbeam (461) and the lower crossbeam (462).

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