Reverse osmosis membrane pressure testing device

Abstract

The utility model belongs to the technical field of reverse osmosis membrane pressure testing, and particularly relates to a reverse osmosis membrane pressure testing device which comprises a water storage tank, a controller is fixedly connected to the front face of the water storage tank, and a water pump, a water inlet pipe and two electric push rods are arranged above the water storage tank. The output end of the water pump is fixedly communicated with the end, close to the water storage tank, of the water inlet pipe, the input end of the water pump penetrates through the water storage tank and extends into the water storage tank, the outer surface of the water inlet pipe is fixedly communicated with a pressure gauge, the top end of the water inlet pipe is fixedly communicated with a placement shell, and a water outlet pipe is arranged above the water inlet pipe. A reverse osmosis membrane can be placed in the device, meanwhile, the electric push rod stretches out and draws back to drive the pressing shell to move towards the interior of the placing shell, the pressing shell can press the reverse osmosis membrane and seal the reverse osmosis membrane in the placing shell, and when the pressing shell moves, the telescopic pipe stretches out and draws back along with the movement, so that the reverse osmosis membrane can be subjected to a closed pressure test.

Description

Technical Field

[0001] The utility model belongs to the technical field of reverse osmosis membrane pressure testing, and in particular relates to a reverse osmosis membrane pressure testing device. Background Art

[0002] Reverse osmosis membrane elements are typically made of a diaphragm, an inlet grid, and a water-distribution fabric, all sealed and rolled together with adhesive. Structurally, the desalination layer of the diaphragm is in direct contact with the inlet grid. During the rolling process and actual pressurized operation, the two interact to varying degrees due to the forces acting on them.

[0003] If the reverse osmosis membrane is not well-matched with the inlet grid, such as physical damage to the desalination layer of the reverse osmosis membrane under applied pressure, the overall performance of the membrane element, especially the desalination rate, will be affected. In severe cases, the membrane element may be scrapped, resulting in high economic losses. Therefore, it is necessary to pressure test the reverse osmosis membrane before rolling and use to evaluate its compatibility with the inlet grid and reduce the risks caused by the incompatibility between the two.

[0004] In order to solve the above problems, this application proposes a reverse osmosis membrane pressure testing device. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a reverse osmosis membrane pressure testing device, which has the characteristic of being able to perform pressure testing on a reverse osmosis membrane.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a reverse osmosis membrane pressure testing device, comprising a water tank, a controller fixedly connected to the front of the water tank, a water pump, a water inlet pipe and two electric push rods respectively arranged above the water tank, the output end of the water pump is fixedly connected to the end of the water inlet pipe close to the water tank, the input end of the water pump passes through the water tank and extends to the interior of the water tank, the outer surface of the water inlet pipe is fixedly connected to a pressure gauge, the top of the water inlet pipe is fixedly connected to a placement shell, a water outlet pipe is arranged above the water inlet pipe, the bottom end of the water outlet pipe is fixedly connected to the upper surface of the water tank, the end of the water outlet pipe away from the water tank is fixedly connected to a telescopic pipe, and the bottom end of the telescopic pipe is fixedly connected to a pressing shell.

[0007] As a preferred technical solution of the present invention, two groups of connecting columns are fixedly connected to the bottom surface of the water tank, and the bottom end of each connecting column is fixedly connected to a support plate.

[0008] As a preferred technical solution of the present invention, the upper surface of the water storage tank is fixedly connected to a water supply pipe, and a protective cover is clamped inside the water supply pipe.

[0009] As a preferred technical solution of the present invention, the bottom surface of the water pump is fixedly connected to a support seat, and the bottom surface of the support seat is fixedly connected to the upper surface of the water tank.

[0010] As a preferred technical solution of the present invention, the bottom end of each electric push rod is fixedly connected to a fixing ring, and the bottom surface of each fixing ring is fixedly connected to the upper surface of the water tank.

[0011] As a preferred technical solution of the present invention, two connecting frames are fixedly connected to the upper surface of the pressing shell, and the inner top wall of each connecting frame is fixedly connected to the telescopic end of the electric push rod.

[0012] As a preferred technical solution of the present invention, a sealing strip is fixedly connected to the outer surface of the pressed shell, and the sealing strip needs to be in the shape of soft rubber.

[0013] Compared with the prior art, the beneficial effects of the present invention are: by providing a controller, the opening and closing or adjustment of the equipment can be controlled, and the water tank can be used to store water, and the reverse osmosis membrane can be placed inside by placing the shell, and the electric push rod can be used to drive the pressing shell to move toward the inside of the placing shell, so that the pressing shell can press and seal the reverse osmosis membrane into the placing shell, and when the pressing shell moves, the telescopic tube follows the movement and expansion, so that the reverse osmosis membrane can be subjected to a closed pressure test, and then the water in the water tank can be transferred to the water inlet pipe, the placing shell, the pressing shell, the telescopic tube and the water outlet pipe by the work of the water pump, and the water is made to flow into the water tank again through the water outlet pipe to form a cycle, and during the circulation, the water pump can be adjusted in conjunction with the pressure gauge, and then the reverse osmosis membrane can be pressure tested, further reducing the additional economic losses caused by the poor adaptability of the reverse osmosis membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the water storage tank in the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the housing in the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the telescopic tube in the present utility model;

[0019] In the figure: 1. Water tank; 2. Water filling pipe; 3. Protective cover; 4. Controller; 5. Connecting column; 6. Support plate; 7. Water outlet pipe; 8. Telescopic tube; 9. Pressing shell; 10. Placement shell; 11. Pressure gauge; 12. Water pump; 13. Support seat; 14. Water inlet pipe; 15. Fixing ring; 16. Electric push rod; 17. Connecting frame; 18. Sealing strip. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example

[0022] See also Figure 1-4 The utility model provides the following technical solutions: a reverse osmosis membrane pressure testing device, comprising a water tank 1, a controller 4 is fixedly connected to the front of the water tank 1, a water pump 12, a water inlet pipe 14 and two electric push rods 16 are respectively provided above the water tank 1, the output end of the water pump 12 is fixedly connected to the end of the water inlet pipe 14 close to the water tank 1, the input end of the water pump 12 passes through the water tank 1 and extends to the interior of the water tank 1, the outer surface of the water inlet pipe 14 is fixedly connected to a pressure gauge 11, the top of the water inlet pipe 14 is fixedly connected to a placement shell 10, and the top of the water inlet pipe 14 is fixedly connected to the pressure gauge 11. A water outlet pipe 7 is provided, the bottom end of the water outlet pipe 7 is fixedly connected to the upper surface of the water tank 1, and the end of the water outlet pipe 7 away from the water tank 1 is fixedly connected to a telescopic tube 8, and the bottom end of the telescopic tube 8 is fixedly connected to a pressing shell 9. In this embodiment, the telescopic tube 8 can move up and down following the pressing shell 9 by telescoping, and utilize the movement of the pressing shell 9 to cooperate with the placement shell 10 to press and fix the reverse osmosis membrane inside. At the same time, the controller 4 refers to a main command device that changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit in a predetermined order to control the start, speed regulation, braking and reverse of the motor.

[0023] Specifically, two groups of connecting columns 5 are fixedly connected to the bottom surface of the water tank 1, and the bottom end of each connecting column 5 is fixedly connected to a support plate 6. In this embodiment, by providing the connecting columns 5, the support plate 6 can be fixed on the water tank 1, so that the water tank 1 can be stable when placed.

[0024] Specifically, the upper surface of the water tank 1 is fixedly connected to a water adding pipe 2, and a protective cover 3 is clamped inside the water adding pipe 2. In this embodiment, by providing the water adding pipe 2, water can be added to the water tank 1, and the protective cover 3 can be used to protect the water adding pipe 2.

[0025] Specifically, the bottom surface of the water pump 12 is fixedly connected to the support base 13, and the bottom surface of the support base 13 is fixedly connected to the upper surface of the water tank 1. In this embodiment, by providing the support base 13, the water pump 12 can be fixed on the water tank 1, so that the water pump 12 can be firm when in use.

[0026] Specifically, the bottom end of each electric push rod 16 is fixedly connected to a fixing ring 15, and the bottom surface of each fixing ring 15 is fixedly connected to the upper surface of the water tank 1. In this embodiment, by providing the fixing ring 15, the electric push rod 16 can be fixed on the water tank 1, so that the electric push rod 16 can work stably in extension and retraction.

[0027] Specifically, two connecting frames 17 are fixedly connected to the upper surface of the pressing shell 9, and the inner top wall of each connecting frame 17 is fixedly connected to the telescopic end of the electric push rod 16. In this embodiment, by providing the connecting frame 17, the electric push rod 16 can be connected to the pressing shell 9, so that the electric push rod 16 can drive the pressing shell 9 to move.

[0028] Specifically, a sealing strip 18 is fixedly connected to the outer surface of the pressing shell 9. The sealing strip 18 needs to be in a soft rubber shape. In this embodiment, by providing the sealing strip 18, the soft characteristics of the sealing strip 18 can be utilized to cooperate with the pressing shell 9 to form a seal between the pressing shell 9 and the placement shell 10.

[0029] The working principle and use process of the present utility model are as follows: when using, first, place the water tank 1 in a suitable use position, and support the water tank 1 by means of the connecting column 5 and the supporting plate 6. When the placement is completed, connect the electric push rod 16, the pressure gauge 11, the water pump 12 and the controller 4 to the power supply, and connect the electric push rod 16 and the water pump 12 to the controller 4 through the wire. At the same time, remove the protective cover 3 from the water supply pipe 2, and add the appropriate water source into the water tank 1. When the water tank 1 is added with the appropriate amount, install the protective cover 3 onto the water supply pipe 2 again, and then cut the reverse osmosis membrane and the water inlet grid to sizes of 250 mm by 125 mm and 125 mm respectively. 100 mm by 100 mm, the reverse osmosis membrane is folded into a double-layer structure of 125 mm by 125 mm, with the desalination layer facing inward, and the water inlet grid is placed in the folded reverse osmosis membrane. At the same time, the three-layer structure material of the sample preparation is placed in the placement shell 10, and the controller 4 is used to open the electric push rod 16 through the wire. The opening and contraction of the electric push rod 16 drives the pressing shell 9 to move toward the inside of the placement shell 10, and at the same time, the pressing shell 9 and the sealing strip 18 press the reverse osmosis membrane in the placement shell 10, and when the pressing shell 9 moves, the telescopic tube 8 follows the expansion and contraction, thereby fixing and sealing the reverse osmosis membrane in the placement shell 10. When the fixed seal is completed, the controller is again used to open the electric push rod 16 through the wire. The device 4 turns on the water pump 12, and through the opening of the water pump 12, the water in the water tank 1 is transferred to the water inlet pipe 14, the placement shell 10, the telescopic tube 8, the water outlet pipe 7 and the reverse osmosis membrane. The water is transferred to the water tank 1 again through the water outlet pipe 7. At the same time, the data of the pressure gauge 11 is observed. According to the actual application pressure, the water pump 12 is adjusted through the controller 4. When the test is completed, the water pump 12 is turned off, and the electric push rod 16 is opened and extended again, so that the electric push rod 16 drives the pressing shell 9, the sealing strip 18 and the telescopic tube 8 to return to their original position, and then the reverse osmosis membrane is taken out, and the reverse osmosis membrane after the pressure test is unfolded from the folded part and fixed with a homemade tool. Face up and evenly apply 0.1 wt% Rhodamine B solution. After the above dye solution is completely dry, remove the dyed reverse osmosis membrane from the fixed tooling and observe the other side of the reverse osmosis membrane coated with the dye solution. If there is no dye penetration, the physical damage of the reverse osmosis membrane and the water inlet grid at the set pressure is small, and the two have good adaptability and are suitable for the rolling and operation of the reverse osmosis membrane element. If there is dye penetration, the physical damage of the reverse osmosis membrane and the water inlet grid at the set pressure is large, which may cause the desalination performance of the reverse osmosis membrane element after rolling to decrease. It is necessary to consider replacing other types of reverse osmosis membranes or water inlet grids, or it is recommended that the rolled reverse osmosis membrane elements be operated at a lower pressure.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A reverse osmosis membrane pressure testing device, characterized by: The invention comprises a water tank (1), wherein the front of the water tank (1) is fixedly connected to a controller (4), and a water pump (12), a water inlet pipe (14) and two electric push rods (16) are respectively arranged above the water tank (1), the output end of the water pump (12) is fixedly connected to the end of the water inlet pipe (14) close to the water tank (1), the input end of the water pump (12) passes through the water tank (1) and extends to the inside of the water tank (1), the outer surface of the water inlet pipe (14) is fixedly connected to a pressure gauge (11), the top end of the water inlet pipe (14) is fixedly connected to a placement shell (10), and a water outlet pipe (7) is arranged above the water inlet pipe (14), the bottom end of the water outlet pipe (7) is fixedly connected to the upper surface of the water tank (1), the end of the water outlet pipe (7) away from the water tank (1) is fixedly connected to a telescopic pipe (8), and the bottom end of the telescopic pipe (8) is fixedly connected to a pressing shell (9).

2. A reverse osmosis membrane pressure testing device according to claim 1, characterized in that: Two groups of connecting columns (5) are fixedly connected to the bottom surface of the water storage tank (1), and the bottom end of each connecting column (5) is fixedly connected to a support plate (6).

3. A reverse osmosis membrane pressure testing device according to claim 1, characterized in that: The upper surface of the water storage tank (1) is fixedly connected to a water supply pipe (2), and a protective cover (3) is clamped inside the water supply pipe (2).

4. A reverse osmosis membrane pressure testing device according to claim 1, characterized in that: The bottom surface of the water pump (12) is fixedly connected to a support base (13), and the bottom surface of the support base (13) is fixedly connected to the upper surface of the water tank (1).

5. The reverse osmosis membrane pressure testing device according to claim 1, characterized in that: The bottom end of each electric push rod (16) is fixedly connected to a fixing ring (15), and the bottom surface of each fixing ring (15) is fixedly connected to the upper surface of the water tank (1).

6. The reverse osmosis membrane pressure testing device according to claim 1, characterized in that: Two connecting frames (17) are fixedly connected to the upper surface of the pressing shell (9), and the inner top wall of each connecting frame (17) is fixedly connected to the telescopic end of the electric push rod (16).

7. The reverse osmosis membrane pressure testing device according to claim 1, characterized in that: The outer surface of the pressed shell (9) is fixedly connected with a sealing strip (18), and the sealing strip (18) needs to be in a soft rubber shape.

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