Membrane flux testing instrument

Abstract

The utility model discloses a membrane flux testing instrument, particularly relates to flux testing equipment field, including shell, base, first liquid storage tank and second liquid storage tank, the bottom end face of shell inner cavity is provided with the base, there are two sets of base, the upper end face of two sets of base is respectively provided with first liquid storage tank and second liquid storage tank, the first liquid storage tank is provided with the first liquid storage tank, the second liquid storage tank is provided with the second liquid storage tank, the second liquid storage tank is provided with the second liquid storage tank. A liquid inlet is formed in the side wall of the first liquid storage tank in a penetrating mode. Liquid is infused into the inner cavity of the first liquid storage tank through the liquid inlet, the solution is stirred through the stirring mechanism, the uniformity of the tested solution is ensured, the peristaltic pump drives the solution to flow into the second liquid storage tank through the first silicone tube, the second silicone tube, the membrane flux assembly and the third silicone tube, and the membrane flux assembly is used for detecting the performance of a membrane. Wherein the movement direction of water can be effectively observed through the acrylic cylindrical pipe, and the flow meter, the flow sensor, the back pressure valve, the pressure sensor and the test host are installed, so that relevant detailed data such as flux, efficiency and rejection rate of the diaphragm under a certain liquid condition are obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to flux test equipment field, more specifically, the utility model relates to a membrane flux test instrument. BACKGROUND

[0002] The membrane flux test instrument is a key equipment for evaluating the performance of the membrane in the membrane separation process. The membrane flux refers to the amount of fluid passing through a unit membrane area per unit time, which is an important parameter for measuring the performance and operating condition of the membrane module. The membrane flux test instrument measures the flux of the membrane under different pressures, temperatures and fluid properties by simulating the actual working conditions, so as to evaluate the performance of the membrane, including the permeation efficiency, separation effect, anti-pollution ability, etc.

[0003] For example, application No. CN202221016133.4 provides a low-pressure membrane flux tester. The existing low-pressure membrane flux tester has the problems of difficult quick fixing and installation of the low-pressure membrane during flux testing, inconvenient replacement of the low-pressure membrane, long flux testing time, and inability to quickly obtain results, which affects the testing efficiency. However, with the increasing market demand for water environment management projects, it is difficult for relevant parties to define product parameters, and while measuring the performance of the membrane, detailed data related to the flux, efficiency, and retention rate of the membrane under certain liquid conditions should also be recorded. The above device has too simple a function.

[0004] Therefore, a membrane flux test instrument is proposed to solve the above problems. Utility model content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a membrane flux test instrument to solve the problems raised in the above background.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a kind of membrane flux test instrument, including shell, pedestal, first liquid storage tank and second liquid storage tank, the bottom end surface of the shell inner chamber is provided with pedestal, and pedestal is provided with two groups, the upper end surface of two groups The first liquid storage tank and second liquid storage tank are respectively provided with first liquid storage tank, the side wall of first liquid storage tank is provided with inlet, and the lower portion of inlet is provided with drain, the inner chamber of first liquid storage tank is provided with stirring mechanism, the inner chamber of first liquid storage tank is placed with first silica gel tube, and one end of first silica gel tube is connected with the input end of peristaltic pump, and the output end of peristaltic pump is connected with membrane flux assembly by second silica gel tube, the side of membrane flux assembly away from second silica gel tube is by third silica gel tube, the outer diameter surface of third silica gel tube is installed with flowmeter, and the side of flowmeter away from membrane flux assembly is provided with flow sensor, the outer diameter surface of third silica gel tube is provided with back pressure valve, the first liquid storage tank is connected with second liquid storage tank by communicating pipe, and the outer diameter surface of communicating pipe is provided with one-way valve, the membrane flux assembly is cylindrical, and membrane flux assembly includes membrane snap disc, acrylic cylinder pipe and sealing clamp, the membrane snap disc is installed between two groups of acrylic cylinder pipes, and the contact surface of membrane snap disc and two groups of acrylic cylinder pipes is provided with sealing clamp, the membrane snap disc includes first limit disc and second limit disc, the inner diameter diameter of first limit disc is same with the outer diameter diameter of second limit disc.

[0007] Preferably, the first silica gel tube away from the peristaltic pump end and the third silica gel tube away from the membrane snap disc end are provided with pressure sensors, and the side of the peristaltic pump is provided with a test host.

[0008] Preferably, the stirring mechanism includes a stepper motor and a first bevel gear, the output end of the stepper motor is provided with a first bevel gear, and the stepper motor and the first bevel gear are provided with two groups, the two groups of first bevel gears are meshed with a second bevel gear, the bottom end surface of the second bevel gear is provided with a stirring rod, the contact surface of the stirring rod and the first liquid storage tank is provided with a swivel, and the outer diameter surface of the stirring rod is provided with a stirring branch rod, the contact surface of the stirring rod and the inner chamber bottom end surface of the first liquid storage tank is provided with a bearing.

[0009] Preferably, the inlet and the drain constitute a communication structure through the first liquid storage tank, the first liquid storage tank and the peristaltic pump constitute a communication structure through the first silica gel tube, the peristaltic pump, the second silica gel tube, the membrane flux assembly and the third silica gel tube constitute a communication structure with the second liquid storage tank, the second liquid storage tank and the first liquid storage tank constitute a communication structure through the communicating pipe, and the first liquid storage tank constitutes a circulation loop through the first silica gel tube, the peristaltic pump, the second silica gel tube, the membrane flux assembly, the third silica gel tube, the second liquid storage tank and the communicating pipe.

[0010] Preferably, the test host is electrically connected with a stepper motor, a peristaltic pump, a flow meter, a flow sensor, a back pressure valve, a one-way valve and a pressure sensor.

[0011] Preferably, the first bevel gear and the second bevel gear are meshed and linked, a contact surface of the membrane clamping disc of the membrane flux assembly and the acrylic cylindrical pipe is provided with a sealing ring, and the stirring rod forms a rotating structure around the center of the stirring rod through the rotating ring and the bearing and the first liquid storage tank.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] Compared with the prior art, the membrane flux testing instrument has the following advantages: when in use, liquid is injected into the inner cavity of the first liquid storage tank through the liquid inlet, and the solution is stirred through the stirring mechanism to ensure the uniformity of the test solution; at the same time, the peristaltic pump is started, and the peristaltic pump drives the solution to flow into the second liquid storage tank through the first silica gel pipe, the second silica gel pipe, the membrane flux assembly and the third silica gel pipe; the membrane flux assembly is used for detecting the performance of the membrane; the acrylic cylindrical pipe can effectively observe the direction of water movement; and the flow meter, the flow sensor, the back pressure valve, the pressure sensor and the test host are installed, so that the flux, the efficiency and the retention rate of the membrane under certain liquid conditions and other related detailed data can be effectively obtained.

[0014] Compared with the prior art, the membrane flux testing instrument has the following advantages: when in use, liquid is injected into the inner cavity of the first liquid storage tank through the liquid inlet, and the solution is stirred through the stirring mechanism to ensure the uniformity of the test solution; at the same time, the peristaltic pump is started, and the peristaltic pump drives the solution to flow into the second liquid storage tank through the first silica gel pipe, the second silica gel pipe, the membrane flux assembly and the third silica gel pipe; the membrane flux assembly is used for detecting the performance of the membrane; the acrylic cylindrical pipe can effectively observe the direction of water movement; and the flow meter, the flow sensor, the back pressure valve, the pressure sensor and the test host are installed, so that the flux, the efficiency and the retention rate of the membrane under certain liquid conditions and other related detailed data can be effectively obtained.

[0015] Compared with the prior art, the membrane flux testing instrument can effectively obtain the flux, efficiency, retention rate and other detailed data of the membrane under certain liquid conditions.

[0016] Compared with the prior art, the membrane flux testing instrument can effectively obtain the flux, efficiency, retention rate and other detailed data of the membrane under certain liquid conditions. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a shell front view structure schematic diagram of the utility model.

[0018] Figure 2 It is a stirring mechanism front view structure schematic diagram of the utility model.

[0019] Figure 3 It is a membrane flux assembly front view structure schematic diagram of the utility model.

[0020] Figure 4 It is a membrane clamping disc three-dimensional structure schematic diagram of the utility model.

[0021] The reference signs are: 1, shell; 2, base; 3, first liquid storage tank; 4, second liquid storage tank; 5, liquid inlet; 6, liquid outlet; 7, stirring mechanism; 71, stepping motor; 72, first bevel gear; 73, second bevel gear; 74, stirring rod; 75, rotating ring; 76, stirring branch rod; 8, first silica gel pipe; 9, peristaltic pump; 10, second silica gel pipe; 11, membrane flux assembly; 111, membrane clamping disc; 1111, first limiting disc; 1112, second limiting disc; 112, acrylic cylindrical pipe; 113, sealing clamp; 12, third silica gel pipe; 13, flow meter; 14, flow sensor; 15, back pressure valve; 16, communication pipe; 17, one-way valve; 18, pressure sensor; 19, test host. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment 1

[0024] As shown in the accompanying drawings Figures 1 to 3The membrane flux testing instrument shown includes a shell 1, a base 2, a first liquid storage tank 3 and a second liquid storage tank 4, the bottom end face of the inner cavity of the shell 1 is provided with the base 2, and the base 2 is provided with two groups, the upper end faces of the two groups of bases 2 are respectively provided with the first liquid storage tank 3 and the second liquid storage tank 4, the side wall of the first liquid storage tank 3 is provided with a liquid inlet 5, and the lower side of the liquid inlet 5 is provided with a liquid outlet 6, the inner cavity of the first liquid storage tank 3 is provided with a stirring mechanism 7, the inner cavity of the first liquid storage tank 3 is placed with a first silica gel pipe 8, one end of the first silica gel pipe 8 is connected with the input end of a peristaltic pump 9 in communication, and the output end of the peristaltic pump 9 is connected with a membrane flux assembly 11 in communication through a second silica gel pipe 10, the side of the membrane flux assembly 11 away from the second silica gel pipe 10 is connected with a third silica gel pipe 12, the outer diameter surface of the third silica gel pipe 12 is provided with a flow meter 13, and the side of the flow meter 13 away from the membrane flux assembly 11 is provided with a flow sensor 14, the outer diameter surface of the third silica gel pipe 12 is provided with a back pressure valve 15, the first liquid storage tank 3 is connected with the second liquid storage tank 4 in communication through a communication pipe 16, and the outer diameter surface of the communication pipe 16 is provided with a one-way valve 17, the membrane flux assembly 11 is in a cylindrical shape, and the membrane flux assembly 11 includes a membrane clamping disc 111, an acrylic cylindrical pipe 112 and a sealing clamp 113, the membrane clamping disc 111 is installed between the two groups of acrylic cylindrical pipes 112, and the contact surface of the membrane clamping disc 111 and the two groups of acrylic cylindrical pipes 112 is provided with the sealing clamp 113, the membrane clamping disc 111 includes a first limiting disc 1111 and a second limiting disc 1112, and the inner diameter of the first limiting disc 1111 is the same as the outer diameter of the second limiting disc 1112.

[0025] Wherein: the peristaltic pump 9 drives the solution in the inner cavity of the first liquid storage tank 3 to flow into the second liquid storage tank 4, and the solution in the inner cavity of the first liquid storage tank 3 flows into the second liquid storage tank 4 through the first silica gel pipe 8, the peristaltic pump 9, the second silica gel pipe 10, the membrane flux assembly 11 and the third silica gel pipe 12 in turn, wherein the flow meter 13 and the flow sensor 14 are used to detect the flux of the third silica gel pipe 12, and the pressure sensor 18 is used to detect the pressure of the end of the first silica gel pipe 8 away from the peristaltic pump 9 and the end of the third silica gel pipe 12 away from the membrane clamping disc 111 respectively, so as to monitor the change of the transmembrane pressure in real time, and the flow of the permeate can also be measured accurately in real time, and the back pressure valve 15 can be used to adjust the transmembrane pressure of the test chamber, and the detection data can be transmitted to the test host 19 in real time, so that the flux, efficiency, retention rate and other related detailed data of the membrane under certain liquid conditions can be effectively obtained, the membrane is limited by the membrane clamping disc 111, the membrane is fixed between the first limiting disc 1111 and the second limiting disc 1112, the first limiting disc 1111 and the second limiting disc 1112 are buckled to limit the membrane, the membrane clamping disc 111 is fixed between the acrylic cylindrical pipes 112 by the sealing clamp 113, and the contact surface of the membrane clamping disc 111 and the acrylic cylindrical pipe 112 is provided with a sealing ring, so as to facilitate the measurement of the membrane, and the acrylic transparent material is used as the liquid chamber on both sides of the membrane, and the membrane is sealed and installed in the middle, so that the water movement direction can be observed.

[0026] Example 2

[0027] Based on the embodiment 1, the scheme in the embodiment 1 is further refined and introduced in combination with the specific working mode as follows: Figures 1 to 4 As shown in the following description:

[0028] As a preferred embodiment, the end of the first silica gel pipe 8 away from the peristaltic pump 9 and the end of the third silica gel pipe 12 away from the membrane clamping disc 111 are both provided with a pressure sensor 18, and one side of the peristaltic pump 9 is provided with a test host 19, wherein the pressure sensor 18 is used to detect the pressure of the end of the first silica gel pipe 8 away from the peristaltic pump 9 and the end of the third silica gel pipe 12 away from the membrane clamping disc 111 respectively, so as to monitor the change of the transmembrane pressure in real time, and the detection data can be transmitted to the test host 19 in real time, so that the flux, efficiency, retention rate and other related detailed data of the membrane under certain liquid conditions can be effectively obtained.

[0029] As a preferred embodiment, the stirring mechanism 7 comprises a stepper motor 71 and a first bevel gear 72, the output end of the stepper motor 71 is provided with the first bevel gear 72, and the stepper motor 71 and the first bevel gear 72 are both provided with two groups, the two groups of first bevel gears 72 are meshingly connected with a second bevel gear 73, the bottom end face of the second bevel gear 73 is provided with a stirring rod 74, the contact surface between the stirring rod 74 and the first liquid storage tank 3 is provided with a rotating ring 75, and the outer diameter surface of the stirring rod 74 is provided with a stirring branch rod 76, and the contact surface between the stirring rod 74 and the bottom end face of the inner cavity of the first liquid storage tank 3 is provided with a bearing. The solution is stirred by the stirring mechanism 7, the stepper motor 71 drives the first bevel gear 72 to rotate, the first bevel gear 72 is meshingly connected with the second bevel gear 73, so that the second bevel gear 73 rotates to make the stirring rod 74 rotate, and the stirring rod 74 and the first liquid storage tank 3 form a rotating structure through the rotating ring 75 and the bearing. The stirring branch rod 76 is used for stirring, preventing the solute from precipitating, ensuring the uniformity of the test solution, and facilitating the measurement of the flux, efficiency, and retention rate of the membrane under certain liquid conditions.

[0030] As a preferred embodiment, the liquid inlet 5 is connected with the liquid outlet 6 through the first liquid storage tank 3, the first liquid storage tank 3 is connected with the peristaltic pump 9 through the first silica gel pipe 8, the peristaltic pump 9 is connected with the second liquid storage tank 4 through the second silica gel pipe 10, the membrane flux assembly 11, and the third silica gel pipe 12, the second liquid storage tank 4 is connected with the first liquid storage tank 3 through the communication pipe 16, and the first liquid storage tank 3 forms a circulation loop through the first silica gel pipe 8, the peristaltic pump 9, the second silica gel pipe 10, the membrane flux assembly 11, the third silica gel pipe 12, the second liquid storage tank 4, and the communication pipe 16. The flow meter 13 and the flow sensor 14 are used to detect the flux of the third silica gel pipe 12, accurately measure the flux of the permeate in real time, adjust the transmembrane pressure of the test chamber through the back pressure valve 15, and transmit the detection data to the test host 19 in real time, so that the flux, efficiency, and retention rate of the membrane under certain liquid conditions can be effectively obtained.

[0031] As a preferred embodiment, the test host 19 is electrically connected with the stepper motor 71, the peristaltic pump 9, the flow meter 13, the flow sensor 14, the back pressure valve 15, the one-way valve 17, and the pressure sensor 18.

[0032] As a preferred embodiment, the first bevel gear 72 is meshingly connected with the second bevel gear 73, the contact surface between the membrane clamping disc 111 and the acrylic cylindrical pipe 112 in the membrane flux assembly 11 is provided with a sealing ring, and the stirring rod 74 and the first liquid storage tank 3 form a rotating structure around the center of the stirring rod 74 through the rotating ring 75 and the bearing.

[0033] The utility model discloses a working process as follows: wherein the liquid inlet 5 is used to inject liquid into the inner cavity of the first liquid storage tank 3, the stirring mechanism 7 is used to stir the solution, and the uniformity of the test solution is ensured. At the same time, the peristaltic pump 9 is started, and the peristaltic pump 9 drives the solution to flow into the second liquid storage tank 4 through the first silica gel pipe 8, the second silica gel pipe 10, the membrane flux assembly 11 and the third silica gel pipe 12. The membrane flux assembly 11 is used to detect the performance of the membrane, and the acrylic cylindrical pipe 112 can effectively observe the direction of water movement. At the same time, the flowmeter 13, the flow sensor 14, the back pressure valve 15, the pressure sensor 18 and the test host 19 are installed. Since the liquid inlet 5 constitutes a communication structure with the liquid outlet 6 through the first liquid storage tank 3, since the first liquid storage tank 3 constitutes a communication structure with the peristaltic pump 9 through the first silica gel pipe 8, since the peristaltic pump 9 constitutes a communication structure with the second liquid storage tank 4 through the second silica gel pipe 10, the membrane flux assembly 11 and the third silica gel pipe 12, since the second liquid storage tank 4 constitutes a communication structure with the first liquid storage tank 3 through the communication pipe 16, and since the first liquid storage tank 3 constitutes a circulation loop through the first silica gel pipe 8, the peristaltic pump 9, the second silica gel pipe 10, the membrane flux assembly 11, the third silica gel pipe 12, the second liquid storage tank 4 and the communication pipe 16, the test liquid is used in a circulating manner, the membrane is measured, and the solution is stirred by the stirring mechanism 7. The first bevel gear 72 is driven to rotate by the stepping motor 71, the first bevel gear 72 is meshed with the second bevel gear 73, the second bevel gear 73 is rotated, and the stirring rod 74 is rotated.

[0034] And the stirring rod 74 through the swivel 75 and bearing with the first liquid tank 3 constitutes the rotating structure, using the stirring branch rod 76 to the easy stirring, prevent the solute to deposit, ensure the uniformity of test solution, using the film card engagement disc 111 to the diaphragm is limited, wherein the diaphragm is fixed between the first limiting disc 1111 and the second limiting disc 1112, and the first limiting disc 1111 and the second limiting disc 1112 are buckled, the diaphragm is limited, the film card engagement disc 111 is fixed between the acrylic cylindrical tube 112 through the sealing clamp 113, and the contact surface of the film card engagement disc 111 and the acrylic cylindrical tube 112 is provided with a sealing ring, which is convenient for measuring the diaphragm, and the diaphragm is sealed and installed in the middle by using acrylic transparent material as the liquid chamber on both sides of the diaphragm, the movement direction of water can be observed, and the liquid falling into the second liquid tank 4 flows back to the first liquid tank 3 through the communicating pipe 16 and the one-way valve 17, which is convenient for measuring the diaphragm, wherein the peristaltic pump 9 drives the solution in the inner cavity of the first liquid tank 3 to flow into the second liquid tank 4, and the solution in the inner cavity of the first liquid tank 3 flows into the second liquid tank 4 through the first silica gel pipe 8, the peristaltic pump 9, the second silica gel pipe 10, the membrane flux assembly 11 and the third silica gel pipe 12 in turn, the flow meter 13 and the flow sensor 14 are used to detect the flux of the third silica gel pipe 12, and the pressure sensor 18 is used to detect the pressure of the end of the first silica gel pipe 8 away from the peristaltic pump 9 and the end of the third silica gel pipe 12 away from the film card engagement disc 111, which can monitor the change of transmembrane pressure in real time, and can also accurately measure the flow of permeate in real time, the back pressure valve 15 can adjust the transmembrane pressure of the test chamber, and the detection data can be transmitted to the test host 19 in real time, which can effectively obtain the flux, efficiency, retention rate and other related detailed data of the diaphragm under certain liquid conditions.

Claims

1. A membrane flux testing apparatus comprising a housing (1), a base (2), a first liquid reservoir (3) and a second liquid reservoir (4), characterised in that: The bottom end face of the inner cavity of the shell (1) is provided with a base (2), and the base (2) is provided with two groups, the upper end faces of the two groups of the base (2) are respectively provided with a first liquid storage tank (3) and a second liquid storage tank (4), the side wall of the first liquid storage tank (3) is provided with a liquid inlet (5), and the lower side of the liquid inlet (5) is provided with a liquid outlet (6), the inner cavity of the first liquid storage tank (3) is provided with a stirring mechanism (7), the inner cavity of the first liquid storage tank (3) is placed with a first silica gel pipe (8), one end of the first silica gel pipe (8) is connected with the input end of a peristaltic pump (9), and the output end of the peristaltic pump (9) is connected with a membrane flux assembly (11) through a second silica gel pipe (10), the side of the membrane flux assembly (11) away from the second silica gel pipe (10) is connected through a third silica gel pipe (12), the outer diameter surface of the third silica gel pipe (12) is provided with a flow meter (13), and the side of the flow meter (13) away from the membrane flux assembly (11) is provided with a flow sensor (14), the outer diameter surface of the third silica gel pipe (12) is provided with a back pressure valve (15), the first liquid storage tank (3) is connected with the second liquid storage tank (4) through a communication pipe (16), and the outer diameter surface of the communication pipe (16) is provided with a one-way valve (17), the membrane flux assembly (11) is in a cylindrical shape, and the membrane flux assembly (11) comprises a membrane clamping disc (111), a plexiglass cylindrical pipe (112) and a sealing clamp (113), the membrane clamping disc (111) is installed between the two groups of plexiglass cylindrical pipes (112), and the contact surface of the membrane clamping disc (111) and the two groups of plexiglass cylindrical pipes (112) is provided with a sealing clamp (113), the membrane clamping disc (111) comprises a first limiting disc (1111) and a second limiting disc (1112), and the inner diameter of the first limiting disc (1111) is the same as the outer diameter of the second limiting disc (1112).

2. The membrane flux testing apparatus of claim 1, wherein: The end of the first silica gel pipe (8) away from the peristaltic pump (9) and the end of the third silica gel pipe (12) away from the membrane clamping disc (111) are provided with pressure sensors (18), and one side of the peristaltic pump (9) is provided with a test host (19).

3. The membrane flux testing apparatus of claim 1, wherein: The stirring mechanism (7) comprises a stepping motor (71) and a first bevel gear (72), the output end of the stepping motor (71) is provided with the first bevel gear (72), and the stepping motor (71) and the first bevel gear (72) are provided with two groups, the two groups of the first bevel gears (72) are connected with a second bevel gear (73), the bottom end face of the second bevel gear (73) is provided with a stirring rod (74), the contact surface of the stirring rod (74) and the first liquid storage tank (3) is provided with a rotating ring (75), and the outer diameter surface of the stirring rod (74) is provided with a stirring branch rod (76), and the contact surface of the stirring rod (74) and the bottom end face of the inner cavity of the first liquid storage tank (3) is provided with a bearing.

4. The membrane flux testing apparatus of claim 1, wherein: The liquid inlet (5) is communicated with the liquid outlet (6) through the first liquid storage tank (3), the first liquid storage tank (3) is communicated with the peristaltic pump (9) through the first silica gel pipe (8), the peristaltic pump (9) is communicated with the second liquid storage tank (4) through the second silica gel pipe (10), the membrane flux assembly (11) and the third silica gel pipe (12), the second liquid storage tank (4) is communicated with the first liquid storage tank (3) through the communication pipe (16), and the first liquid storage tank (3) forms a circulation loop through the first silica gel pipe (8), the peristaltic pump (9), the second silica gel pipe (10), the membrane flux assembly (11), the third silica gel pipe (12), the second liquid storage tank (4) and the communication pipe (16).

5. The membrane flux testing apparatus of claim 2, wherein: The test host (19) is electrically connected with the stepping motor (71), the peristaltic pump (9), the flow meter (13), the flow sensor (14), the back pressure valve (15), the one-way valve (17) and the pressure sensor (18).

6. The membrane flux test apparatus of claim 3, wherein: The first bevel gear (72) and the second bevel gear (73) are meshed and linked, the contact surface of the membrane clamping disc (111) and the acrylic cylindrical pipe (112) in the membrane flux assembly (11) is provided with a sealing ring, and the stirring rod (74) is rotatably connected with the first liquid storage tank (3) through the rotating ring (75) and the bearing.

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