Drawer type diaphragm test bench

Abstract

The utility model discloses a drawer type diaphragm test board, which comprises a raw water tank, a raw material pump, a controller and a diaphragm fixing table, and the diaphragm fixing table comprises an upper end cover, a water outlet pipe, a fixed cavity, a base, a top diaphragm sealing element and a diaphragm storage table; the upper end cover is located at the upper end of the fixed cavity, the upper end cover is provided with an inflation and exhaust port and an upper end cover gas sealing piece, and a top film sealing piece and a rebound spring are arranged in the fixed cavity and used for jacking up the top film sealing piece after testing; the membrane placing table is arranged on the base, and a membrane pressing filter screen covers the membrane placing table so as to prevent the membrane from shifting; the top film sealing piece abuts against the film through air compression, and the top film sealing piece and the fixed cavity are sealed through a sealing ring; by means of the modular structure, the multiple sealing technology and automatic control, high efficiency, accuracy and safety of membrane testing are achieved, meanwhile, operation convenience and equipment durability are both considered, and the membrane performance evaluation device is suitable for membrane performance evaluation in laboratories and industrial scenes.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm testing technology, specifically a drawer-type diaphragm testing station. Background Technology

[0002] During the production and quality inspection of diaphragms, it is necessary to conduct precise tests on the performance of the diaphragms, such as sealing performance and pressure resistance.

[0003] Existing membrane testing equipment has some shortcomings. For example, the membrane fixing method is not reliable enough, and membrane displacement or incomplete sealing can easily occur during testing, thus affecting the accuracy of the test results. At the same time, traditional test stands are often complex in structure, inconvenient to operate, and have low testing efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model discloses a drawer-type diaphragm testing stage to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drawer-type diaphragm testing stage, comprising:

[0006] Raw water tank, used to store filtrate and prepare spiked concentrate;

[0007] The raw material pump has its inlet end connected to the raw water tank and its outlet end connected to the membrane fixing platform. It is used to pressurize and transport the filtrate or the spiked solution to the membrane fixing platform.

[0008] The controller, electrically connected to the raw material pump, is used to regulate the start / stop and speed frequency of the raw material pump. The controller is powered by a plug.

[0009] A membrane mounting platform includes an upper cover, an outlet pipe, a mounting cavity, a base, a top membrane seal, and a membrane placement platform. The upper cover is located at the upper end of the mounting cavity and has an inflation / exhaust port and an upper cover gas seal. The mounting cavity contains a top membrane seal and a rebound spring for lifting the top membrane seal after testing. The base is located at the lower end of the mounting cavity, and the membrane placement platform is mounted on the base for placing the membrane. A membrane filter screen covers the platform to prevent membrane displacement. The base has an inlet and an outlet.

[0010] The connecting pipe between the raw material pump and the membrane fixing platform is equipped with a pre-membrane pressure gauge to monitor constant water flow pressure; the return pipeline between the membrane fixing platform and the raw water tank is equipped with a flow meter, a post-membrane pressure gauge and a valve in sequence, which are used to adjust the concentrate return flow rate, pressure and flow rate respectively.

[0011] The top membrane seal is pressed against the diaphragm by air compression and sealed with the fixed cavity by a sealing ring; the water outlet pipe is connected to the upper end cap seal to collect the produced water.

[0012] Preferably, the water outlet pipe passes through the gas seal of the upper end cover and is sealed to the upper end cover.

[0013] Preferably, the upper end cover is connected to the fixed cavity by a thread, and the inflation / exhaust port is a continuous air supply interface.

[0014] Preferably, the upper end cover gas seal and the top membrane seal are sealed by a sealing ring, and the fixed cavity is tightly connected to the top membrane seal and sealed by a sealing ring.

[0015] Preferably, the rebound spring is located between the fixed cavity and the top membrane seal, and is used to automatically lift the top membrane seal after testing.

[0016] Preferably, a water vapor isolation cavity is formed between the top membrane seal and the membrane placement stage, and the top membrane seal presses against the edge of the membrane to prevent displacement during testing.

[0017] Preferably, the press-fit filter screen covers the surface of the membrane and is fixed to the edge of the membrane placement platform, and its mesh size is smaller than the effective area of ​​the membrane.

[0018] Preferably, the water inlet of the base is connected to the outlet pipe of the raw material pump, and the water outlet is connected to the raw water tank through a return pipe.

[0019] Preferably, the diaphragm stage has a groove structure that matches the test diaphragm and is detachably connected to the fixed cavity.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. In this utility model, the membrane is fixed in position by pressing the membrane filter screen to prevent displacement, curling or damage caused by water flow impact, thus ensuring the integrity of the test and avoiding displacement or poor sealing of the membrane during the test, thereby improving the accuracy of the test results. The top membrane seal is pressed tightly against the edge of the membrane by inflation and compression, combined with multiple sealing rings, to ensure complete isolation of the water and air chambers and avoid leakage or cross-contamination.

[0022] 2. In this utility model, by combining the membrane placement platform with the groove structure and the pressure membrane filter, the rebound spring automatically lifts the top membrane seal, simplifying the disassembly process and improving operating efficiency. Attached Figure Description

[0023] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of the structure of the drawer-type diaphragm testing station of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the diaphragm fixing platform of this utility model;

[0027] The following are the labels in the diagram: 1. Raw water tank; 2. Raw material pump; 3. Controller; 4. Plug; 5. Pre-membrane pressure gauge; 6. Membrane fixing platform; 7. Extraction surface; 8. Post-membrane pressure gauge; 9. Valve; 10. Flow meter; 11. Top cover; 12. Air inlet / outlet; 13. Top cover gas seal; 14. Outlet pipe; 15. Fixing cavity; 16. Top membrane seal; 17. Rebound spring; 18. Membrane placement platform; 19. Pressed membrane filter screen; 20. Base; 21. Membrane; 22. Sealing ring. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] Example: Figure 1 and Figure 2 As shown, a drawer-type diaphragm testing station includes:

[0030] Raw water tank (1) is used to store filtrate and prepare spiked concentrate;

[0031] The raw material pump (2) is connected to the raw water tank (1) at its inlet end and to the membrane fixing platform (6) at its outlet end. It is used to pressurize and transport the filtrate or the spiked solution to the membrane fixing platform (6).

[0032] The controller (3) is electrically connected to the raw material pump (2) and is used to adjust the start-stop and speed frequency of the raw material pump. The controller (3) is powered by the plug (4).

[0033] A diaphragm mounting platform (6) includes an upper cover (11), a water outlet pipe (14), a mounting cavity (15), a base (20), a top diaphragm seal (16), and a diaphragm placement platform (18). The upper cover (11) is located at the upper end of the mounting cavity (15). The upper cover (11) is provided with an inflation / exhaust port (12) and an upper cover gas seal (13). The upper cover (11) is connected to the mounting cavity (15) by threads. The inflation / exhaust port (12) is a continuous air supply interface, which can withstand higher water pressure when testing diaphragms with higher pressure. The inflation / exhaust port is used to control the air intake and exhaust. A rebound spring (17) is provided inside the mounting cavity (15). The rebound spring (17) is located inside the mounting cavity (15). Between the top membrane seal (16) and the top membrane seal (17), the top membrane seal (16) is automatically lifted after testing. At the same time, the fixed cavity (15) is also equipped with a spring to lift the top membrane seal (16), so that after the test, the top membrane seal (16) can be lifted to facilitate the removal of the membrane plate on the platform. The return spring (17) is used to lift the top membrane seal (16), which is also located inside the fixed cavity (15), after testing. The fixed cavity (15) and the top membrane seal (16) are tightly connected and sealed by a sealing ring (22). The top membrane seal (16) completely isolates the water and air flow channels of the sealed cavity and also acts as a stop for the membrane, preventing the membrane from shifting due to high water intensity during the membrane test. The upper end cover gas seal (13) and the top membrane seal (16) are connected. The seals (16) are sealed with a sealing ring (22). The base (20) is located at the lower end of the fixed cavity (15). The membrane plate stage (18) is set on the base (20) for placing the membrane (21). The membrane plate stage (18) has a groove structure that matches the test membrane (21) and is detachably connected to the fixed cavity (15). The membrane plate stage is covered with a pressure membrane filter (19) to prevent the membrane from shifting. A water vapor isolation cavity is formed between the top membrane seal (16) and the membrane plate stage (18). The top membrane seal (16) presses against the edge of the membrane (21) to prevent it from shifting during testing. The pressure membrane filter (19) covers the surface of the membrane (21) and is fixed to the edge of the membrane plate stage (18). Its mesh size is smaller than the effective area of ​​the membrane, which facilitates the placement of the membrane and fixes the position of the membrane to prevent the membrane from curling and shifting. It also prevents the membrane from being broken and damaged by high-intensity water flow. The base (20) is provided with an inlet and an outlet. The inlet of the base (20) is connected to the outlet pipe of the raw material pump (2), and the outlet is connected to the raw water tank (1) through the return pipe. The connecting pipe between the raw material pump (2) and the membrane fixing platform (6) is provided with a pre-membrane pressure gauge (5) to monitor the constant water flow pressure. The return pipe between the membrane fixing platform (6) and the raw water tank (1) is provided with a flow meter (10), a post-membrane pressure gauge (8) and a valve (9) in sequence to adjust the concentrated water return flow rate, pressure and flow rate, respectively.The top membrane seal (16) is pressed against the diaphragm (21) by air compression and sealed to the fixed cavity (15) by a sealing ring (22); the water outlet pipe (14) is connected to the upper end cap seal to collect the produced water, and the water outlet pipe (14) passes through the upper end cap gas seal (13) and is sealed to the upper end cap (11).

[0034] The working principle includes the following steps:

[0035] 1) Preparation stage

[0036] Place the membrane to be tested (21) in the groove of the membrane stage (18), cover it with the membrane filter screen (19) and fix the edges. Install the membrane stage onto the base (20) and ensure that the top membrane seal (16) is inflated through the inflation vent (12) and pressed against the edge of the membrane to form a water-air isolation cavity.

[0037] 2) System startup and pressurization

[0038] The controller (3) starts the feed pump (2) to pressurize and deliver the filtrate or spiking solution in the raw water tank (1) to the membrane mounting platform (6). By adjusting the speed and frequency of the feed pump, the water flow pressure is controlled (monitored by the pressure gauge 5 before the membrane) to ensure a constant water pressure input.

[0039] 3) Test execution and monitoring

[0040] Water flows through the inlet of the base (20) into the area below the membrane, and after permeating the membrane, it is collected through the outlet pipe (14). The unpermeated concentrate returns to the raw water tank through the return pipe, and the flow rate, pressure and velocity are adjusted by the valve (9), the flow meter (10) and the pressure gauge (8) after the membrane.

[0041] 4) End of testing and disassembly

[0042] Stop the raw material pump, release the air pressure at the air outlet (12), and the return spring (17) will automatically lift the top membrane seal (16) to relieve the pressure on the diaphragm. Remove the diaphragm shelf (18) and check the condition of the diaphragm or replace it with a new diaphragm.

[0043] This test stand achieves high efficiency, accuracy, and safety in membrane testing through modular structure, multiple sealing technology, and automated control, while also taking into account ease of operation and equipment durability. It is suitable for membrane performance evaluation in laboratory and industrial settings.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drawer style membrane test station, characterized by: The utility model relates to a kind of membrane test device, including, Raw water tank (1) for storing filtrate and configuring standard water; Raw material pump (2), its import end is connected raw water tank (1), export end is connected membrane fixed platform (6), for pressurized delivery filtrate or standard liquid to membrane fixed platform (6); Controller (3) is electrically connected with raw material pump (2), for adjusting the start-stop and speed frequency of raw material pump, and the controller (3) is powered by plug (4); Membrane fixed platform (6) includes upper end cover (11), water outlet pipe (14), fixed cavity (15), base (20), top membrane seal (16) and membrane placement platform (18);The upper end cover (11) is located in the upper end of the fixed cavity (15), and the upper end cover (11) is provided with air inlet and air outlet (12) and upper end cover gas seal (13), the inside of the fixed cavity (15) is provided with top membrane seal (16) and rebound spring (17), for testing after lifting top membrane seal (16);The base (20) is located in the lower end of fixed cavity (15), and the membrane placement platform (18) is arranged on the base (20), for placing membrane (21), and is covered with membrane pressing filter screen (19) on it to prevent membrane displacement;The base (20) is provided with water inlet and water outlet; The connecting pipeline between the raw material pump (2) and the membrane fixed platform (6) is provided with a pre-membrane pressure gauge (5) for monitoring the constant water flow pressure;The backflow pipeline between the membrane fixed platform (6) and the raw water tank (1) is sequentially provided with a flowmeter (10), a post-membrane pressure gauge (8) and a valve (9) for adjusting the concentration water backflow flow rate, pressure and flow respectively; The top membrane seal (16) is pressed against the membrane (21) by air compression, and is sealed with the fixed cavity (15) by a sealing ring (22);The water outlet pipe (14) is connected with the upper end cover seal to collect water production.

2. A drawer-type membrane testing station according to claim 1, characterized in that: The water outlet pipe (14) penetrates the upper end cover gas seal (13) and is sealingly connected with the upper end cover (11).

3. The drawer-type membrane testing station of claim 1, wherein: The upper end cover (11) is connected with the fixed cavity (15) by threading, and the air inlet and air outlet (12) is a continuous air supply interface.

4. The drawer-type membrane testing station of claim 1, wherein: The upper end cover gas seal (13) and the top membrane seal (16) are sealed by a sealing ring (22), and the fixed cavity (15) is tightly connected with the top membrane seal (16) and sealed by a sealing ring (22).

5. The drawer-type membrane testing station of claim 1, wherein: The rebound spring (17) is located between the fixed cavity (15) and the top membrane seal (16) for automatically lifting the top membrane seal (16) after testing.

6. The drawer-type membrane testing station of claim 1, wherein: The top membrane seal (16) and the membrane placement platform (18) form a water and gas isolation cavity, and the top membrane seal (16) presses against the edge of the membrane (21) to prevent displacement during testing.

7. The drawer-type membrane testing station of claim 1, wherein: The membrane pressing filter screen (19) covers the surface of the membrane (21) and is fixed to the edge of the membrane placement platform (18), and the mesh size is smaller than the effective area of the membrane.

8. The drawer-type membrane testing station of claim 1, wherein: The water inlet of the base (20) is connected with the outlet pipeline of the raw material pump (2), and the water outlet is connected with the raw water tank (1) through the backflow pipeline.

9. The drawer-type membrane testing station of claim 1, wherein: The film placing platform (18) is provided with a groove structure matched with the test film (21) and is detachably connected in the fixed cavity (15).

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