Membrane package filtering device

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a membrane package filtering device, which comprises a membrane package filtering mechanism, a pump and a liquid supply pipe connected with the pump, a liquid supply switch is arranged at one end of the liquid supply pipe far away from the pump, a liquid inlet, a liquid outlet and a circulating port are arranged on the membrane package filtering mechanism, the liquid outlet is connected with a liquid outlet pipe, and the circulating port is connected with the liquid outlet pipe. A liquid discharging switch is arranged on the liquid discharging pipe, the pump is connected with the liquid inlet, the circulation port is connected with a backflow pipe, a backflow valve is arranged on the backflow pipe, the other end of the backflow pipe is connected with a liquid storage tank, a circulation pipe is arranged on the lower portion of the liquid storage tank, and a circulation valve is arranged on the circulation pipe. And the other end of the circulating pipe is connected with the liquid supply pipe between the liquid supply switch and the pump. The arranged liquid storage tank is matched with the liquid supply switch, the liquid discharge switch and the reflux valve, so that switching among circulating filtration, filtration collection, backwashing and backwashing collection can be conveniently completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and particularly relates to a membrane package filtering device. Background Art

[0002] The membrane package filtering device is an advanced and precise separation technology equipment. It usually consists of a membrane package, a shell, inlet and outlet pipes, a pressure regulating component, and related monitoring and control systems. The membrane package, as the core component, is made of special materials and is covered with tiny and uniform pores. When the liquid to be treated enters the device through the inlet pipe, under the action of pressure, impurities, particles, and macromolecular substances in the liquid are blocked by the membrane package, while small molecular substances and pure liquid smoothly pass through the membrane pores and flow out from the outlet pipe.

[0003] For example, a filtering membrane package and a filtering device disclosed in the utility model patent with the authorized patent publication number CN219701585U includes at least one membrane package unit. The membrane package unit includes a permeate channel layer, and a support layer, a filtering membrane layer, and a liquid inlet channel layer are sequentially arranged on both sides of the permeate channel layer from inside to outside. The liquid inlet channel layer, the filtering membrane layer, the support layer, and the permeate channel layer are all provided with liquid inlets, liquid outlets, and exhaust ports corresponding in position. The liquid inlets, liquid outlets, and exhaust ports of each layer are aligned to form a liquid inlet channel, a liquid outlet channel, and an exhaust channel respectively. The permeate channel layer is provided with a liquid inlet protrusion for sealing the liquid inlet channel at the liquid inlet, and the permeate channel layer is provided with an exhaust protrusion for sealing the exhaust channel at the exhaust port. The liquid inlet channel layer is provided with a liquid outlet protrusion for sealing the liquid outlet channel at the liquid outlet. After this membrane package is installed, it is necessary to first connect hoses through the liquid inlet and the liquid outlet. When cyclic filtration is required, the two hoses are simultaneously placed in a container, and a pump is started for filtration. At the same time, when adding new filtered liquid, it is necessary to reconnect the hose connected to the liquid inlet to the liquid supply pipe. When discharging liquid and when backwashing the membrane package is required, it is necessary to adjust the liquid outlet hose to a new container or connect it to the backwashing liquid pipe, which is very inconvenient. Therefore, a membrane package filtering device that can facilitate operation and switch between cyclic filtration, liquid discharge, and backwashing is needed. Summary of the Utility Model

[0004] Aiming at the above problems, the utility model provides a membrane package filtering device, which well solves the problem that the switching between cyclic filtration, liquid discharge, and backwashing operations in the prior art is not convenient enough.

[0005] To achieve the above object, the technical solution adopted by the present utility model is as follows: A membrane package filtration device includes a membrane package filtration mechanism, a pump, and a liquid supply pipe connecting the pump. One end of the liquid supply pipe away from the pump is provided with a liquid supply switch. The membrane package filtration mechanism is provided with a liquid inlet, a liquid discharge port, and a circulation port. The liquid discharge port is connected to a liquid discharge pipe, and the liquid discharge pipe is provided with a liquid discharge switch. The pump is connected to the liquid inlet, the circulation port is connected to a return pipe, the return pipe is provided with a return valve, the other end of the return pipe is connected to a liquid storage tank, the lower part of the liquid storage tank is provided with a circulation pipe, and the circulation pipe is provided with a circulation valve. The other end of the circulation pipe is connected to the liquid supply pipe between the liquid supply switch and the pump.

[0006] In this embodiment, an exhaust pipe is provided at the upper part of the liquid storage tank, and an exhaust valve is provided on the exhaust pipe.

[0007] In this embodiment, the liquid supply pipe is a rubber hose, the pump is a peristaltic pump, and the liquid supply pipe passes through the peristaltic pump and is connected to the liquid inlet.

[0008] In this embodiment, it further includes an installation platform. The pump, the liquid supply switch, and the liquid storage tank are all fixedly arranged on the installation platform. An installation frame with its bottom fixedly connected to the installation platform is erected above the pump, and the membrane package filtration mechanism is arranged on the installation frame.

[0009] In this embodiment, shock-absorbing feet are provided at the bottom of the installation platform.

[0010] In this embodiment, the membrane package filtration mechanism includes a clamping plate one, a clamping plate two, and a membrane package arranged between the clamping plate one and the clamping plate two. The clamping plate one and the clamping plate two are detachably connected and clamp and fix the membrane package. The clamping plate one or the clamping plate two is provided with a liquid inlet and a circulation port communicating with the membrane package. The liquid inlet is located below the circulation port, and the liquid discharge port communicates with the circulation port.

[0011] In this embodiment, two positioning connection columns are connected to the clamping plate two, through holes corresponding to the positioning connection columns are provided on the clamping plate one, the positioning connection columns pass through the membrane package and the through holes, and locking screws are installed at one ends of the positioning connection columns passing through the membrane package and the through holes.

[0012] In this embodiment, a liquid inlet pressure gauge is installed at the liquid inlet, and a circulation pressure gauge is installed at the circulation port.

[0013] In this embodiment, legs are provided at the lower part of the liquid storage tank.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] The filtered liquid can be collected through the provided liquid storage tank and re-enter the membrane package for secondary filtration. At the same time, the device can reverse the start of the pump to backwash the sieved macromolecular materials and collect them in the liquid storage tank. With the cooperation of the provided liquid storage tank, liquid supply switch, liquid discharge switch, and reflux valve, the device can easily complete the switching of cycle filtration, filtration collection, backwashing, and backwash collection, facilitating the complete discharge of the residual sample solution in the pipeline and the flushing of the samples intercepted on the membrane package, thereby improving the filtration efficiency and sample recovery rate. Brief Description of the Drawings

[0016] Figure 1 It is a sectional view of the present utility model.

[0017] In the figure: 1. Membrane package filtration mechanism; 101. First clamping plate; 102. Second clamping plate; 103. Membrane package; 2. Pump; 3. Liquid supply pipe; 4. Liquid inlet; 5. Liquid discharge port; 6. Circulation port; 7. Liquid discharge pipe; 8. Liquid discharge switch; 9. Liquid supply switch; 10. Reflux pipe; 11. Reflux valve; 12. Liquid storage tank; 121. Tank body; 122. Tank cover; 123. Pipe joint; 124. Exhaust pipe; 125. Exhaust valve; 13. Circulation pipe; 14. Circulation valve; 15. Installation platform; 16. Installation frame; 17. Shock-absorbing floor feet; 18. Positioning connection column; 19. Locking screw; 20. Inlet liquid pressure gauge; 21. Circulation pressure gauge; 22. Legs. Detailed Description of the Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Such as Figure 1As shown in the figure, a membrane package filtration device includes a membrane package filtration mechanism 1, a pump 2, and a liquid supply pipe 3 connected to the pump 2. One end of the liquid supply pipe 3 away from the pump 2 is provided with a liquid supply switch 9. The membrane package filtration mechanism 1 is provided with a liquid inlet 4, a liquid discharge port 5, and a circulation port 6. The liquid discharge port 5 is connected to a liquid discharge pipe 7. A liquid discharge switch 8 is provided on the liquid discharge pipe 7. Both the liquid supply switch 9 and the liquid discharge switch 8 can adopt ball valve switches with knobs. The liquid outlet of the pump 2 is connected to the liquid inlet 4 through a pipeline. The circulation port 6 is connected to a return pipe 10. A return valve 11 is provided on the return pipe 10. The other end of the return pipe 10 is connected to a liquid storage tank 12. A circulation pipe 13 is welded to the lower part of the liquid storage tank 12. The circulation pipe 13 is communicated with the inside of the liquid storage tank 12. A circulation valve 14 is installed on the circulation pipe 13. The other end of the circulation pipe 13 is welded and connected to the liquid supply pipe 3 between the liquid supply switch 9 and the pump 2, and the circulation pipe 13 is communicated with the liquid supply pipe 3.

[0020] In this embodiment, the liquid storage tank 12 includes a tank body 121 and an openable tank cover 122 provided on the upper part of the tank body 121. The return pipe 10 is connected to the liquid storage tank 12 through a pipeline joint 123 communicating with the inside of the tank body 121. An exhaust pipe 124 is also welded to the tank cover 122. An exhaust valve 125 is installed on the exhaust pipe 124 by means of threaded connection.

[0021] In this embodiment, the liquid supply pipe 3 is a rubber hose, the pump 2 is a peristaltic pump, and the liquid supply pipe 3 passes through the peristaltic pump 2 and is connected to the liquid inlet 4.

[0022] In this embodiment, an installation platform 15 is further included. Screw holes are provided at the bottoms of the pump 2, the liquid supply switch 9, and the liquid storage tank 12. The pump 2, the liquid supply switch 9, and the liquid storage tank 12 are all fixedly arranged on the installation platform 15 by screws passing through the lower part of the installation platform 15. An installation frame 16 with its bottom welded and fixed to the installation platform 15 is erected above the pump 2. The membrane package filtration mechanism 1 is fixedly installed on the installation frame 16 by screws.

[0023] In this embodiment, shock-absorbing feet 17 are fixedly installed at the bottom of the installation platform 15 by screws.

[0024] In this embodiment, the membrane module filtration mechanism 1 includes a first clamping plate 101, a second clamping plate 102, and a membrane module 103 disposed between the first clamping plate 101 and the second clamping plate 102. The membrane module 103 can adopt a tangential flow filtration membrane module, and ion exchange or sample concentration can be achieved through the tangential flow filtration membrane module. The first clamping plate 101 and the second clamping plate 102 are detachably connected and clamp and fix the membrane module 103. A liquid inlet 4 and a circulation port 6 communicating with the membrane module 103 are formed on the first clamping plate 101 or the second clamping plate 102. The liquid inlet 4 is located below the circulation port 6. The drain port 5 is formed at a 90-degree angle on the side of the circulation port 6 and communicates with the circulation port 6.

[0025] In this embodiment, two threaded holes are formed on the left side surface of the second clamping plate 102, and two positioning connection columns 18 are threadedly connected in the threaded holes. The end of the positioning connection column 18 away from the second clamping plate 102 is also provided with external threads. A through hole corresponding to the positioning connection column 18 is formed on the first clamping plate 101. The positioning connection column 18 passes through the membrane module 103 and the through hole. One end of the positioning connection column 18 passing through the membrane module 103 and the through hole enables the first clamping plate 101 and the second clamping plate 102 to clamp the membrane module 103 by installing a mounting lock screw 19.

[0026] In this embodiment, three-way pipes are installed at both the liquid inlet 4 and the liquid outlet. A liquid inlet pressure gauge 20 is installed on the three-way pipe at the liquid inlet 4, and a circulation pressure gauge 21 is installed on the three-way pipe at the circulation port 6. During the operation of the equipment, the working pressure condition of the membrane module 103 can be obtained by calculating the pressure difference between the liquid inlet pressure gauge 20 and the circulation pressure gauge 21.

[0027] In this embodiment, legs 22 are fixedly welded to the lower part of the liquid storage tank 12.

[0028] When the utility model is in use, the liquid supply switch 9 is connected to the liquid supply device. By opening the liquid supply switch 9 and the liquid discharge switch 8 and starting the pump 2 at the same time, the liquid to be filtered can be filtered through the membrane package 103 and discharged through the liquid discharge pipe 7 for collection. If cyclic filtration is required, close the liquid discharge switch 8 and open the reflux valve 11. After the liquid to be filtered passes through the membrane package 103, it enters the liquid storage tank 12 through the reflux pipe 10. After the liquid storage tank 12 reaches a certain amount, close the liquid supply switch 9 and open the circulation valve 14. The liquid in the liquid storage tank 12 will enter the membrane package filtration mechanism 1 again through the liquid supply pipe 3 and be recycled back into the liquid storage tank 12. After multiple cycles, the liquid in the liquid storage tank 12 can be transferred to a new container through the liquid discharge pipe 7 by opening the liquid discharge switch 8 and closing the circulation valve 14. When backwashing of the membrane package 103 is required, close the liquid discharge switch 8 and the exhaust valve 125, and open the circulation valve 14, the reflux valve 11 and the liquid supply switch 9. The liquid supply pipe 3 is connected to the backwashing liquid. At this time, reverse-start the pump 2. After the backwashing liquid enters the liquid storage tank 12, it enters the membrane package 103 from the circulation port 6 through the reflux pipe 10 to perform backwashing on the membrane package 103 in the reverse direction, and the macromolecular materials filtered out in the membrane package 103 are collected by flowing back into the liquid storage tank 12 through the backwashing liquid.

[0029] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A membrane package filtration device, comprising a membrane package filtration mechanism, a pump and a liquid supply pipe connected to the pump, characterized in that: A liquid supply switch is provided at one end of the liquid supply pipe away from the pump, a liquid inlet, a liquid discharge port and a circulation port are provided on the membrane package filtration mechanism, the liquid discharge port is connected to the liquid discharge pipe, the liquid discharge pipe is provided with a liquid discharge switch, the pump is connected to the liquid inlet, the circulation port is connected to a reflux pipe, the reflux pipe is provided with a reflux valve, the other end of the reflux pipe is connected to a liquid storage tank, a circulation pipe is provided at the lower part of the liquid storage tank, the circulation pipe is provided with a circulation valve, and the other end of the circulation pipe is connected to the liquid supply pipe between the liquid supply switch and the pump.

2. The membrane packet filtration device according to claim 1, characterized in that: An exhaust pipe is arranged on the upper part of the liquid storage tank, and an exhaust valve is arranged on the exhaust pipe.

3. The membrane packet filtration device according to claim 1, characterized in that: The liquid supply pipe is a rubber hose, the pump is a peristaltic pump, and the liquid supply pipe passes through the peristaltic pump and is connected to the liquid inlet.

4. The membrane packet filtration device according to claim 1, characterized in that: It also includes a mounting platform, the pump, liquid supply switch and liquid storage tank are all fixedly arranged on the mounting platform, a mounting frame with a bottom fixedly connected to the mounting platform is set above the pump, and the membrane package filtering mechanism is arranged on the mounting frame.

5. The membrane packet filtration device according to claim 4, characterized in that: The bottom of the installation platform is provided with shock-absorbing feet.

6. The membrane packet filtration device according to claim 1, characterized in that: The membrane package filtration mechanism includes a clamping plate 1, a clamping plate 2 and a membrane package arranged between the clamping plate 1 and the clamping plate 2. The clamping plate 1 and the clamping plate 2 are detachably connected and clamp the membrane package. The clamping plate 1 or the clamping plate 2 is provided with a liquid inlet and a circulation port connected to the membrane package. The liquid inlet is located below the circulation port, and the liquid discharge port is connected to the circulation port.

7. The membrane packet filtration device according to claim 6, characterized in that: The second clamping plate is connected to two positioning connection columns, the first clamping plate is provided with through holes corresponding to the positioning connection columns, the positioning connection columns pass through the membrane package and the through holes, and a locking screw is installed at one end of the positioning connection columns passing through the membrane package and the through holes.

8. The membrane packet filtration device according to claim 1, characterized in that: A liquid inlet pressure gauge is installed at the liquid inlet, and a circulation pressure gauge is installed at the circulation port.

9. The membrane packet filtration device according to claim 1, characterized in that: The lower part of the liquid storage tank is provided with supporting legs.

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