Experimental membrane separation device with liquid outlet
By setting up a liquid discharge port and a stainless steel tube needle valve in the membrane separation device in combination with the tilt design of the membrane tank, the problem of residual liquid in the experimental membrane separation equipment cannot be recovered, and the residual liquid is effectively recovered and rapid cleaning is achieved, reducing water consumption and environmental pollution.
Patent Information
- Application Number
- CN202422069556.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The membrane separation equipment for experiments lacks a liquid discharge port, which leads to the inability to accurately recover the residual liquid, affecting material weight recording and environmental pollution.
A liquid discharge port is set up in the membrane separation device, and connected by a stainless steel pipe and a needle valve. Combined with the inclined design of the membrane tank, the residual liquid is effectively discharged and recovered.
The recovery and rapid cleaning of residual liquid in the membrane separation device is realized, which reduces water consumption and environmental pollution, improves the convenience of operation and water-saving effect.
Smart Images
Figure CN223060769U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of experimental equipment, and particularly relates to an experimental membrane separation device with a liquid discharge port. Background Technique
[0002] Membrane separation equipment is now widely used in people's production and life, ranging from large-scale wastewater treatment systems used in factories to small-scale water purifiers used in households. This is mainly because membrane separation has the advantages of low energy consumption, good treatment effect, and low cost.
[0003] Some small-scale membrane separation equipment is equipped with a liquid discharge port due to the need for cleaning and membrane replacement. Some medium and large-scale membrane separation equipment, especially experimental membrane separation equipment, do not have a liquid discharge port due to long-term operation and other factors. Experimental membrane separation equipment needs to record the weights of the materials before and after separation, and conduct material balance calculations by combining the sampling content. Although the volume of the membrane tank is fixed, the densities of different media and solution concentrations are different, so it is impossible to accurately know the weight of the remaining solution in the membrane tank, and at the same time, the residual liquid cannot be discharged, so more water is needed to clean the membrane tank, causing environmental pollution. Generally, clean water is used to start the pump to eject the residual liquid in the pipeline and the membrane tank. However, due to the diffusion of solutes in the solution, more water is needed for flushing, and a large amount of diluted residual liquid will inevitably be generated.
[0004] Therefore, it is necessary to improve the membrane tank to overcome the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide an experimental membrane separation device with a liquid discharge port for the problems existing in the current prior art. Through this device, the purpose of recovering the residual liquid in the membrane separation device can be achieved; at the same time, the membrane device can be quickly cleaned, reducing water use and environmental pollution. It is more convenient, faster, and water-saving to discharge the residual liquid than the traditional top-liquid method.
[0006] In order to achieve the above utility model purpose, the technical solution of the utility model is as follows:
[0007] An experimental membrane separation device with a liquid discharge port, the membrane separation device includes a reverse osmosis / nanofiltration circulation tank, a high-pressure pump, a reverse osmosis membrane tank, and a nanofiltration membrane tank; the reverse osmosis membrane tank and the nanofiltration membrane tank are respectively connected to the reverse osmosis / nanofiltration circulation tank and the high-pressure pump through pipelines; one end of the reverse osmosis membrane tank for feeding liquid is the reverse osmosis membrane tank liquid feeding end, and the end for discharging liquid is the reverse osmosis membrane tank discharging end; a reverse osmosis membrane tank membrane liquid feeding port is provided at the reverse osmosis membrane tank liquid feeding end; a reverse osmosis membrane tank non-permeated liquid discharging port is provided above the reverse osmosis membrane tank discharging end, and a nanofiltration membrane tank permeated liquid outlet is arranged at the center of the discharging end; a reverse osmosis membrane tank liquid discharge port is opened below the reverse osmosis membrane tank discharging end.
[0008] Further, in the described experimental membrane separation device with a liquid discharge port, it is characterized in that: one end of the feed liquid of the nanofiltration membrane tank is the feed end of the nanofiltration membrane tank, and the end of the discharge liquid is the discharge end of the nanofiltration membrane tank; a nanofiltration membrane tank membrane liquid feed port is provided at the feed end of the nanofiltration membrane tank; a nanofiltration membrane tank non-permeated liquid discharge port is provided above the discharge end, and a nanofiltration membrane tank membrane liquid outlet is arranged at the center of the discharge end; a nanofiltration membrane tank liquid discharge port is opened below the discharge end of the nanofiltration membrane tank.
[0009] Preferably, the inner (straight) diameter of the reverse osmosis membrane tank liquid discharge port is 10 mm.
[0010] Preferably, the inner (straight) diameter of the nanofiltration membrane tank liquid discharge port is 10 mm.
[0011] Further, a stainless steel pipe with a length of 100 - 150 mm, an outer diameter of 12.5 - 13 mm, and a wall thickness of 2.5 - 3 mm is welded to the reverse osmosis membrane tank liquid discharge port as the reverse osmosis membrane tank liquid discharge pipe, and a needle valve of corresponding size is arranged on the reverse osmosis membrane tank liquid discharge pipe. More preferably, a stainless steel pipe with a length of 100 - 150 mm, an outer diameter of 12.5 mm, and a wall thickness of 2.5 mm is welded to the reverse osmosis membrane tank liquid discharge port as the reverse osmosis membrane tank liquid discharge pipe.
[0012] Further, the reverse osmosis membrane tank liquid discharge pipe and the corresponding needle valve are made of 316L stainless steel.
[0013] Further, a stainless steel pipe with a length of 100 - 150 mm, an outer diameter of 12.5 - 13 mm, and a wall thickness of 2.5 - 3 mm is welded to the nanofiltration membrane tank liquid discharge port as the nanofiltration membrane tank liquid discharge pipe, and a needle valve of corresponding size is arranged on the nanofiltration membrane tank liquid discharge pipe. More preferably, a stainless steel pipe with a length of 100 - 150 mm, an outer diameter of 12.5 mm, and a wall thickness of 2.5 mm is welded to the nanofiltration membrane tank liquid discharge port as the nanofiltration membrane tank liquid discharge pipe.
[0014] Further, the nanofiltration membrane tank liquid discharge pipe and the corresponding needle valve are made of 316L stainless steel.
[0015] Further, in the described experimental membrane separation device with a liquid discharge port, the reverse osmosis membrane tank and the nanofiltration membrane tank are both placed parallel on the bracket, and the bottom of the bracket is the bracket foot; a foot pad is added to the bottom of the bracket foot at the feed end of the reverse osmosis membrane tank, so that the included angle between the center line of the reverse osmosis membrane tank and the horizontal line is ≤ 8°. Such treatment can make the residual liquid in the two membrane tanks flow smoothly to the end of the liquid discharge pipe, facilitating the complete discharge of the residual liquid from the membrane tank.
[0016] More preferably, a 30 mm foot pad is added to the bottom of the bracket foot at the feed end of the reverse osmosis membrane tank, so that the included angle between the center line of the reverse osmosis membrane tank and the horizontal line is 2.6°.
[0017] The working principle of the present utility model is:
[0018] Open a small hole at the lower edge of the discharge port end of each of the two membrane tanks for reverse osmosis (RO) and nanofiltration (NF) as the liquid discharge port. Weld a section of stainless steel pipe to the corresponding membrane tank respectively, and connect the other end of the steel pipe to a needle valve of the corresponding size. After adding water to the device, start the high-pressure pump to make the system pressure reach 6 MPa for leak testing. When there is no leakage at the welded joints, pad up the support feet at the feed port end of the membrane tank with floor mats so that the center lines of the two membrane tanks form a certain angle with the horizontal line, facilitating the smooth flow of the residual liquid in the two membrane tanks to one end of the drain pipe and facilitating the complete discharge of the residual liquid from the membrane tank. Conduct reverse osmosis and nanofiltration tests (switching) respectively. After the test is completed, since the discharge port valve at the upper part of the membrane tank is open to the atmosphere, open the corresponding membrane tank drain needle valve, and the residual solution in the membrane tank is completely discharged and weighed. Material balance calculation is carried out according to the weight and content of the separated and concentrated liquid, reducing the loss caused by material residue. Finally, pump clean water into the empty membrane tank to clean the membrane, reducing the number of times of membrane cleaning, saving water, being fast and simple.
[0019] Compared with the existing technology, the beneficial effects of the present utility model are as follows:
[0020] In the device described in the present utility model, the residual liquid in the membrane device can be effectively recovered; at the same time, the membrane device can be quickly cleaned, reducing water use and environmental pollution. It is more convenient, faster and more water-saving than the traditional method of discharging residual liquid by the top liquid method. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic structural diagram of an experimental membrane separation device with a liquid discharge port described in the present utility model;
[0022] Among them, 1 - reverse osmosis membrane tank, 2 - nanofiltration membrane tank, 3 - membrane liquid feed port of reverse osmosis membrane tank, 4 - outlet of non-permeated membrane liquid of reverse osmosis membrane tank, 5 - outlet of permeated membrane liquid of reverse osmosis membrane tank, 6 - liquid discharge port of reverse osmosis membrane tank, 7 - membrane liquid feed port of nanofiltration membrane tank, 8 - outlet of non-permeated membrane liquid of nanofiltration membrane tank, 9 - outlet of permeated membrane liquid of nanofiltration membrane tank, 10 - liquid discharge port of nanofiltration membrane tank. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] All the features disclosed in this specification, or all the steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.
[0024] Any feature disclosed in this specification (including the claims, abstract) can be replaced by other equivalent or similar-purpose alternative features unless specifically stated. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.
[0025] The features and performance of the present utility model will be further described in detail below in conjunction with the embodiments.
[0026] Example 1:
[0027] An experimental membrane separation device with a liquid discharge port, the membrane separation device includes a reverse osmosis / nanofiltration circulation tank, a high-pressure pump, a reverse osmosis (RO) membrane tank 1 and a nanofiltration (NF) membrane tank 2; both the reverse osmosis membrane tank 1 and the nanofiltration membrane tank 2 are connected to the reverse osmosis / nanofiltration circulation tank and the high-pressure pump through pipelines respectively; one end of the reverse osmosis membrane tank 1 for feeding liquid is the reverse osmosis membrane tank feed end, and the end for discharging liquid is the reverse osmosis membrane tank discharge end; a reverse osmosis membrane tank membrane liquid feed port 3 is provided at the reverse osmosis membrane tank feed end; a reverse osmosis membrane tank non-permeated liquid discharge port 4 is provided above the reverse osmosis membrane tank discharge end, and a reverse osmosis membrane tank permeated liquid outlet 5 is arranged at the center of the discharge end; a reverse osmosis membrane tank liquid discharge port 6 is opened below the reverse osmosis membrane tank discharge end.
[0028] Furthermore, one end of the nanofiltration membrane tank 2 for feeding liquid is the nanofiltration membrane tank feed end, and the end for discharging liquid is the nanofiltration membrane tank discharge end; a nanofiltration membrane tank membrane liquid feed port 7 is provided at the nanofiltration membrane tank feed end; a nanofiltration membrane tank non-permeated liquid discharge port 8 is provided above the nanofiltration membrane tank discharge end, and a nanofiltration membrane tank permeated liquid outlet 9 is arranged at the center of the discharge end; a nanofiltration membrane tank liquid discharge port 10 is opened below the nanofiltration membrane tank discharge end.
[0029] Furthermore, the inner diameter of the reverse osmosis membrane tank liquid discharge port 6 is 10 mm.
[0030] Furthermore, the inner diameter of the nanofiltration membrane tank liquid discharge port 10 is 10 mm.
[0031] Furthermore, a stainless steel pipe with a length of 100 mm, an outer diameter of 12.5 mm and a wall thickness of 2.5 mm is welded on the reverse osmosis membrane tank liquid discharge port 6 as the reverse osmosis membrane tank liquid discharge pipe, and a needle valve of corresponding size is arranged on the reverse osmosis membrane tank liquid discharge pipe.
[0032] Furthermore, a stainless steel pipe with a length of 100 mm, an outer diameter of 12.5 mm and a wall thickness of 2.5 mm is welded on the nanofiltration membrane tank liquid discharge port as the nanofiltration membrane tank liquid discharge pipe, and a needle valve of corresponding size is arranged on the nanofiltration membrane tank liquid discharge pipe.
[0033] The reverse osmosis membrane tank 1 and the nanofiltration membrane tank 2 are both placed parallel on the bracket, and the bottom of the bracket is the bracket foot; a 30 mm foot pad is added to the bottom of the bracket foot at the reverse osmosis membrane tank feed end, so that the central lines of the reverse osmosis membrane tank 1 and the nanofiltration membrane tank 2 form an angle of 2.6° with the horizontal line. There is a certain inclination at both ends of the membrane tank, and the residual liquid in the membrane tank can flow smoothly to one end of the liquid discharge pipe, facilitating the complete discharge of the residual liquid from the membrane tank.
[0034] Furthermore, the reverse osmosis membrane tank liquid discharge pipe and the corresponding needle valve are made of 316L stainless steel, which can make them more corrosion-resistant.
[0035] Furthermore, the drain pipe of the nanofiltration membrane tank and the corresponding needle valve are made of 316L stainless steel, which can make them more corrosion-resistant.
[0036] The specific operation steps are as follows:
[0037] Before the test, after adding water to the device, turn on the high-pressure pump to make the system pressure reach 6 MPa for leak testing. When there is no water leakage at the welded joints, raise the support feet at one end of the membrane tank feed port by 30 mm with foot pads so that the included angle between the center lines of the two membrane tanks and the horizontal line is 2.6°. Conduct reverse osmosis and nanofiltration tests (switching) respectively. Reverse osmosis and nanofiltration tests are conventional techniques, that is, feed through the reverse osmosis membrane tank membrane liquid feed port 3 and the nanofiltration membrane tank membrane liquid feed port 7, and then conduct the test. In the reverse osmosis membrane tank 1, the non-permeated liquid of the reverse osmosis membrane tank flows out from the non-permeated liquid outlet 4 of the reverse osmosis membrane tank, and the permeated liquid flows out from the reverse osmosis membrane tank permeated liquid outlet 5 provided at the center of the discharge end. In addition, a reverse osmosis membrane tank drain port 6 is opened below the discharge end of the reverse osmosis membrane tank, which can more conveniently drain all the liquid in the reverse osmosis membrane tank. In the nanofiltration membrane tank 2, the non-permeated liquid of the nanofiltration membrane tank flows out from the non-permeated liquid outlet 8 of the nanofiltration membrane tank, and the permeated liquid is discharged from the nanofiltration membrane tank permeated liquid outlet 9 provided at the center of the discharge end; in addition, a nanofiltration membrane tank drain port 10 is opened below the discharge end of the nanofiltration membrane tank, which can more conveniently drain all the liquid in the reverse osmosis membrane tank.
[0038] After the test, since the outlet valve at the upper part of the membrane tank is open to the atmosphere, open the corresponding membrane tank drain needle valve, and the residual solution in the membrane tank is completely drained and weighed. Material balance calculation is carried out according to the weight and content of the separated and concentrated liquid, reducing the loss caused by material residue. Finally, pump clean water into the empty membrane tank to clean the membrane, reducing the number of times of cleaning the membrane, saving water, being fast and simple.
[0039] The above-described embodiments only represent the specific implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the protection scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the technical solution of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application.
[0040] This background technology section is provided to generally present the context of the present invention. The work of the currently named inventors, to the extent described in this background technology section, and aspects described in this section that are not prior art at the time of filing this application are neither expressly nor implicitly admitted to be prior art of the present invention.
Claims
1. An experimental membrane separation device with a liquid discharge port, characterized in that: The membrane separation device includes a reverse osmosis / nanofiltration circulation tank, a high-pressure pump, a reverse osmosis membrane tank (1) and a nanofiltration membrane tank (2); the reverse osmosis membrane tank (1) and the nanofiltration membrane tank (2) are respectively communicated with the reverse osmosis / nanofiltration circulation tank and the high-pressure pump through pipelines; one end of the feed liquid of the reverse osmosis membrane tank (1) is the feed end of the reverse osmosis membrane tank, and the other end of the discharged liquid is the discharge end of the reverse osmosis membrane tank; a membrane liquid feed port (3) of the reverse osmosis membrane tank is provided at the feed end of the reverse osmosis membrane tank; an outlet for the non-permeated liquid of the reverse osmosis membrane tank (4) is provided above the discharge end of the reverse osmosis membrane tank, and a permeated liquid outlet (5) of the reverse osmosis membrane tank is arranged at the center of the discharge end; a drain port (6) of the reverse osmosis membrane tank is opened below the discharge end of the reverse osmosis membrane tank.
2. The experimental membrane separation device with a liquid discharge port according to claim 1, characterized in that: One end of the feed liquid of the nanofiltration membrane tank (2) is the feed end of the nanofiltration membrane tank, and the other end of the discharged liquid is the discharge end of the nanofiltration membrane tank; a membrane liquid feed port (7) of the nanofiltration membrane tank is provided at the feed end of the nanofiltration membrane tank; an outlet for the non-permeated liquid of the nanofiltration membrane tank (8) is provided above the discharge end of the nanofiltration membrane tank, and a permeated liquid outlet (9) through the nanofiltration membrane tank is arranged at the center of the discharge end; a drain port (10) of the nanofiltration membrane tank is opened below the discharge end of the nanofiltration membrane tank.
3. The experimental membrane separation device with a liquid discharge port according to claim 1, characterized in that: The inner diameter of the drain port (6) of the reverse osmosis membrane tank is 10 mm.
4. The experimental membrane separation device with a liquid discharge port according to claim 2, characterized in that: The inner diameter of the drain port (10) of the nanofiltration membrane tank is 10 mm.
5. The experimental membrane separation device with a liquid discharge port according to claim 1 or 3, characterized in that: A stainless steel pipe with a length of 100 - 150 mm, an outer diameter of 12.5 - 13 mm and a wall thickness of 2.5 - 3 mm is welded to the drain port (6) of the reverse osmosis membrane tank as the drain pipe of the reverse osmosis membrane tank, and a needle valve of corresponding size is arranged on the drain pipe of the reverse osmosis membrane tank.
6. The experimental membrane separation device with a liquid discharge port according to claim 2 or 4, characterized in that: A stainless steel pipe with a length of 100 - 150 mm, an outer diameter of 12.5 - 13 mm and a wall thickness of 2.5 - 3 mm is welded to the drain port (10) of the nanofiltration membrane tank as the drain pipe of the nanofiltration membrane tank, and a needle valve of corresponding size is arranged on the drain pipe of the nanofiltration membrane tank.
7. The experimental membrane separation device with a liquid discharge port according to claim 5, characterized in that: The reverse osmosis membrane tank (1) and the nanofiltration membrane tank (2) are both placed parallel on the bracket, and the bottom of the bracket is the bracket foot; a foot pad is added to the bottom of the bracket foot at the feed end of the reverse osmosis membrane tank, so that the included angle between the center line of the reverse osmosis membrane tank (1) and the horizontal line is ≤ 8°.
8. The experimental membrane separation device with a liquid discharge port according to claim 5, characterized in that: The material of the drain pipe of the reverse osmosis membrane tank and the corresponding needle valve is 316L stainless steel.
9. The experimental membrane separation device with a liquid discharge port according to claim 6, characterized in that: The material of the drain pipe of the nanofiltration membrane tank and the corresponding needle valve is 316L stainless steel.
10. The experimental membrane separation device with a liquid discharge port according to claim 7, characterized in that: A 30 mm foot pad is added to the bottom of the bracket foot at the feed end of the reverse osmosis membrane tank, so that the included angle between the center line of the reverse osmosis membrane tank (1) and the horizontal line is 2.6°.