Liquid mixing system based on liquid changer and operation method thereof

Abstract

The invention relates to the technical field of liquid changing, and discloses a liquid mixing system based on a liquid changing device and an operation method of the liquid mixing system, the liquid mixing system comprises a rack, a Venturi tube, an inlet tube flowmeter, an outlet tube flowmeter, a controller, at least two liquid distributing tubes, the liquid changing device, a liquid changing outlet tube, a main inlet tube, a main outlet tube and a one-way valve, the manipulator, the liquid distributing pipe, the liquid changing device and the liquid outlet changing pipe are installed on the rack, the control end of the manipulator is electrically connected with the control end of the liquid changing device, the liquid outlet end of the liquid distributing pipe is connected with the liquid inlet end of the liquid changing device, the liquid outlet end of the liquid changing device is connected with the liquid inlet end of the liquid outlet changing pipe, the one-way valve is installed on the liquid outlet changing pipe, and the opening direction of the one-way valve is consistent with the liquid outlet direction. The liquid outlet end of the liquid exchange outlet pipe is connected with one liquid inlet end of the Venturi pipe, the other liquid inlet end of the Venturi pipe is connected with the main inlet pipe through the inlet pipe flowmeter, and the liquid outlet end of the Venturi pipe is connected with the main outlet pipe through the outlet pipe flowmeter. The liquid mixing system achieves the effects of structure simplification, convenient operation, water drainage and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid exchange, and in particular to a liquid mixing system based on a liquid exchanger and an operating method thereof. Background Art

[0002] A fluid changer is a device used to automatically replace liquids. It is mainly used to reduce direct contact between test operators and chemical reagents, protect the health of test operators, and improve work efficiency and environmental protection. The fluid changer usually includes components such as a touch unit, a measuring unit, a housing, and an electrolytic cell bottle. It has the functions of automatic liquid addition and discharge, and has a liquid level detection function to ensure the accuracy and safety of the operation. Nowadays, the fluid changer equipment on the market has a complex structure, cumbersome operation, and high cost. In addition, the liquid replacement method is not durable and is often corroded by liquid, affecting the use of the fluid changer. There is also a phenomenon of retained liquid, which leads to waste of liquid resources and is very easy to cause pollution to other liquids.

[0003] Therefore, in view of the above problems, the existing fluid replacement technology needs to be further improved. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems of the existing liquid exchange technology, such as complex structure, cumbersome operation, short durability, easy corrosion, retained liquid and waste of resources; by rationalizing the design of the liquid exchange technology, adopting a frame, a venturi tube, an inlet flowmeter, an outlet flowmeter, a manipulator, a liquid distributor, a liquid changer, a liquid exchange pipe, a main inlet pipe, a main outlet pipe and a one-way valve, and then combining a liquid changer with a base, a shell, a liquid inlet pipe, a liquid outlet pipe, a liquid exchange controller, a drive motor and a liquid exchange mechanism, the liquid changer can achieve a simplified structure and convenient operation, and can achieve the effects of durable use and reduced corrosion of the liquid changer, as well as liquid retention and resource waste.

[0005] The technical solution of the present invention is as follows:

[0006] A liquid mixing system based on a liquid changer, the liquid mixing system comprising: a frame, a venturi tube, an inlet flowmeter, an outlet flowmeter, a manipulator, a liquid distributor, a liquid changer, a liquid exchange pipe, a main inlet pipe, a main outlet pipe and a one-way valve, at least two of the liquid distributors are selected, the manipulator, the liquid distributor, the liquid changer and the liquid exchange pipe are respectively installed on the frame, the control end of the manipulator is electrically connected to the control end of the liquid changer, the liquid outlet end of the liquid distributor is connected to the liquid inlet end of the liquid changer, the liquid outlet end of the liquid changer is connected to the liquid inlet end of the liquid exchange pipe, the one-way valve is installed on the liquid exchange pipe, and the opening direction of the one-way valve is consistent with the liquid outlet direction, the liquid outlet end of the liquid exchange pipe is connected to one liquid inlet end of the venturi tube, the other liquid inlet end of the venturi tube is connected to the main inlet pipe through the inlet flowmeter, and the liquid outlet end of the venturi tube is connected to the main outlet pipe through the outlet flowmeter

[0007] Furthermore, the fluid changer includes: a base, a shell, a liquid inlet pipe, a liquid outlet pipe, a fluid change controller, a drive motor and a fluid change mechanism, the base is mounted on the bottom of the shell, the base and the shell form a chamber, the fluid change controller, the drive motor and the fluid change mechanism are all arranged in the chamber, the liquid inlet pipe and the liquid outlet pipe are both mounted on the base, the liquid outlet end of the liquid inlet pipe is connected to the liquid inlet end of the fluid change mechanism, the liquid outlet end of the liquid change mechanism is connected to the liquid inlet end of the liquid outlet pipe, the fluid change mechanism is used to convert the liquid in the liquid inlet pipe to the liquid outlet pipe, the liquid change mechanism is mounted on the drive end of the drive motor, the drive motor is mounted on the shell, and the control end of the drive motor is electrically connected to the control end of the fluid change controller.

[0008] Furthermore, the base and the shell are both made of metal or plastic.

[0009] Furthermore, at least two liquid outlet pipes are selected, and the liquid inlet pipe is installed in the middle of the base, and the liquid outlet pipe is installed at the edge of the base.

[0010] Furthermore, the liquid exchange mechanism includes a liquid exchange bottom plate, a liquid exchange top plate and a drive plate, the liquid exchange bottom plate is installed on the base, the drive plate is installed on the drive end of the drive motor, and the liquid exchange top plate is installed on the drive plate. The liquid exchange bottom plate and the liquid exchange top plate form a liquid exchange cavity and are used to exchange the liquid, and the liquid inlet pipe and the liquid outlet pipe both pass through the liquid exchange bottom plate to the liquid exchange cavity.

[0011] Furthermore, the liquid exchange chassis is provided with a chassis auxiliary flow channel, and the chassis auxiliary flow channel is used to discharge excess liquid.

[0012] Furthermore, the fluid exchange top plate is provided with a top plate auxiliary flow channel and a fluid exchange flow channel, the fluid exchange flow channel is arranged in the middle of the fluid exchange top plate, the top plate auxiliary flow channel is arranged at the edge of the fluid exchange top plate, and the fluid exchange flow channel is used to connect or disconnect the connection between the liquid inlet pipe and the liquid outlet pipe.

[0013] Furthermore, the fluid exchange bottom plate is a circular fluid exchange bottom plate, the fluid exchange top plate is a circular fluid exchange top plate, and the fluid exchange bottom plate and the fluid exchange top plate have the same diameter.

[0014] Furthermore, the bottom plate auxiliary flow channel is an annular bottom plate auxiliary flow channel, the top plate auxiliary flow channel is an annular top plate auxiliary flow channel, and the top plate auxiliary flow channel and the bottom plate auxiliary flow channel have the same diameter.

[0015] Furthermore, a limiting member is provided on the base, and a limiting groove is provided on the fluid exchange chassis. The limiting member and the limiting groove cooperate with each other and are used to perform a limiting operation on the fluid exchange chassis.

[0016] Furthermore, the device housing comprises a housing cover and a shell body, the housing cover is installed on the top of the shell body, the base is installed on the bottom of the shell body, and the driving motor is installed on the shell body.

[0017] Furthermore, a heat sink is provided on the base.

[0018] Furthermore, the liquid exchange chassis is made of hydrophobic ceramic material.

[0019] Furthermore, the liquid exchange top plate is made of hydrophobic ceramic material.

[0020] Furthermore, a limiting member is provided on the base, and a limiting groove is provided on the fluid exchange chassis. The limiting member and the limiting groove cooperate with each other and are used to perform a limiting operation on the fluid exchange chassis.

[0021] Furthermore, an operating method of a liquid mixing system based on a liquid changer is provided, wherein the operating method comprises the following steps:

[0022] Step 1: Preparation of hydrophobic ceramic materials

[0023] Alumina powder is selected, and corresponding molds with a liquid changing bottom plate and a liquid changing top plate are respectively used to perform high temperature firing to form a liquid changing bottom plate and a liquid changing top plate;

[0024] Weigh 3-5 parts of polymethylhydrogensiloxane, 10-15 parts of polystyrene, 30-40 parts of alumina and 45-50 parts of chloroform by weight, first add the polymethylhydrogensiloxane into the chloroform, and stir with a stirrer for 10 minutes, then add the alumina powder into the above solution, continue stirring for 1 hour, after stirring evenly, slowly add the polystyrene into the mixture, stir for 30 minutes, and prepare a hydrophobic coating mixture;

[0025] The hydrophobic coating mixture is added into the sprayer, and the hydrophobic coating mixture is evenly sprayed on the surface of the liquid exchange bottom plate and the liquid exchange top plate by the sprayer. After the spraying is completed, the liquid exchange bottom plate and the liquid exchange top plate are placed in a drying oven at 100° C. for 1 hour to prepare a hydrophobic liquid exchange bottom plate and a hydrophobic liquid exchange top plate;

[0026] Step 2: Assembly of the fluid changer

[0027] Select a base, a device shell, a liquid inlet pipe, multiple liquid outlet pipes, a liquid exchange controller, a drive motor, a liquid exchange chassis, a liquid exchange top plate, a drive sealing ring, a chassis sealing ring and a drive plate, and install the base on the bottom of the device shell. The base and the device shell form a device cavity. The liquid exchange controller, the drive motor, the liquid exchange chassis, the liquid exchange top plate, the drive sealing ring, the chassis sealing ring and the drive plate are all arranged in the device cavity. The liquid inlet pipe is installed on the middle part of the base, and multiple liquid outlet pipes are installed on the edge of the base, and the liquid inlet pipe and the liquid outlet pipe are passed through the liquid exchange chassis to the liquid exchange cavity. The liquid exchange top plate and the liquid exchange chassis cooperate with each other. The liquid exchange chassis is installed on the base, the drive plate is installed on the drive end of the drive motor, the liquid exchange top plate is installed on the drive plate, the drive motor is installed on the device shell, and the control end of the drive motor is electrically connected to the liquid exchange The control end of the liquid controller; the liquid exchange chassis is provided with a chassis auxiliary flow channel, the chassis auxiliary flow channel is used to discharge excess liquid, the liquid exchange top plate is provided with a top plate auxiliary flow channel and a liquid exchange flow channel, the liquid exchange flow channel is arranged in the middle of the liquid exchange top plate, the top plate auxiliary flow channel is arranged at the edge of the liquid exchange top plate, and the liquid exchange flow channel is used to connect or shut off the connection between the liquid inlet pipe and the liquid outlet pipe; a limit piece is provided on the base, and a limit groove is provided on the liquid exchange chassis, the limit piece and the limit groove cooperate with each other and are used to limit the liquid exchange chassis; a drive sealing ring is provided at the drive disk, the drive sealing ring is used to seal and prevent water from flowing into the drive motor, and a chassis sealing ring is provided on the liquid exchange chassis, and the chassis sealing ring is used to seal the connection between the liquid inlet pipe and the liquid outlet pipe and the liquid exchange chassis; the liquid exchange chassis here selects the liquid exchange chassis and the liquid exchange top plate of step one;

[0028] Step 3: Assembly of the liquid mixing system

[0029] Select the liquid changer of step 2, and then select a frame, a venturi tube, an inlet flowmeter, an outlet flowmeter, a manipulator, a liquid distributor, a liquid changer, a liquid exchange pipe, a main inlet pipe, a main outlet pipe and a one-way valve. At least two of the liquid distributors are selected, and the manipulator, the liquid distributor, the liquid changer and the liquid exchange pipe are respectively installed on the frame. The control end of the manipulator is electrically connected to the control end of the liquid changer, the liquid outlet end of the liquid distributor is connected to the liquid inlet end of the liquid changer, and the liquid outlet end of the liquid changer is connected to the liquid inlet end of the liquid exchange pipe. The one-way valve is installed on the liquid exchange pipe, and the opening direction of the one-way valve is consistent with the liquid outlet direction. The liquid outlet end of the liquid exchange pipe is connected to one liquid inlet end of the venturi tube, and the other liquid inlet end of the venturi tube is connected to the main inlet pipe through the inlet flowmeter, and the liquid outlet end of the venturi tube is connected to the main outlet pipe through the outlet flowmeter.

[0030] Beneficial Effects

[0031] The present invention rationalizes the design of the liquid exchange technology, adopts a frame, a venturi tube, an inlet flowmeter, an outlet flowmeter, a manipulator, a liquid distributor, a liquid exchanger, a liquid exchange pipe, a main inlet pipe, a main outlet pipe and a one-way valve, and then combines a liquid exchanger with a base, a shell, a liquid inlet pipe, a liquid outlet pipe, a liquid exchange controller, a drive motor and a liquid exchange mechanism, so as to achieve a simplified structure and convenient operation of the liquid exchanger, and achieve the effects of durable use and reduced corrosion of the liquid exchanger, as well as liquid retention and resource waste. By adopting a hydrophobic ceramic material coating, the hydrophobic effect of the liquid exchange bottom plate and the liquid exchange top plate can be enhanced, and the hydrophobic angle can reach 160°, which has a good hydrophobic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The figure is a schematic structural diagram of a liquid mixing system based on a liquid changer of the present invention.

[0033] Figure 2 The figure is a schematic diagram of the internal structure of a liquid mixing system based on a liquid changer of the present invention.

[0034] Figure 3 The present invention is a schematic diagram of the structure of a liquid changer based on a liquid mixing system of the liquid changer.

[0035] Figure 4 The present invention is a schematic diagram of the explosion structure of a liquid changing device based on a liquid mixing system of the liquid changing device.

[0036] Figure 5 This is a schematic diagram of the exploded structure of a liquid changer of a liquid mixing system based on a liquid changer according to the present invention from another perspective.

[0037] Figure 6 The present invention is a schematic diagram of a cross-sectional structure of a liquid changing device of a liquid mixing system based on a liquid changing device.

[0038] Figure 7 This is a SEM image of the liquid changer ceramic of the liquid mixing system based on the liquid changer of the present invention.

[0039] Figure 8 This is a schematic diagram of the contact angle of the liquid changer ceramic of the liquid mixing system based on the liquid changer of the present invention.

[0040] Fig. 9 This is a test diagram of the liquid exchange flow rate of a liquid mixing system based on a liquid exchanger of the present invention.

[0041] Figure numbers: 01, liquid outlet pipe; 02, liquid inlet pipe; 03, heat sink; 04, device shell; 05, shell cover; 06, drive motor; 07, drive sealing ring; 08, drive disk; 09, liquid exchange top plate; 10, liquid exchange bottom plate; 11, bottom plate sealing ring; 12, limiter; 13, bottom plate auxiliary flow channel; 14, liquid outlet end; 15, liquid inlet end; 31, frame; 32, inlet flowmeter; 33, venturi tube; 34, outlet flowmeter; 35, controller; 36, liquid changer; 37, liquid outlet pipe exchange; 38, one-way valve; 39, control circuit board; 310, liquid distribution pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-Figure 6 As shown, the present invention provides a liquid mixing system based on a liquid changer, which includes: a frame 31, a venturi tube 33, an inlet flowmeter 32, an outlet flowmeter 34, a controller, a liquid distributor 310, a liquid changer 36, a liquid outlet pipe 37, a main inlet pipe, a main outlet pipe and a one-way valve 38, at least two liquid distributors are selected, the controller, the liquid distributor, the liquid changer and the liquid outlet pipe are respectively installed on the frame, the control end of the controller is electrically connected to the control end of the liquid changer, and the liquid distributor is electrically connected to the control end of the liquid distributor. The liquid outlet is connected to the liquid inlet of the liquid changer, the liquid outlet of the liquid changer is connected to the liquid inlet of the liquid change-out pipe, the one-way valve is installed on the liquid change-out pipe, and the opening of the one-way valve is consistent with the liquid outlet direction, the liquid outlet of the liquid change-out pipe is connected to one liquid inlet of the venturi tube, the other liquid inlet of the venturi tube is connected to the main inlet pipe through the inlet pipe flowmeter, and the liquid outlet of the venturi tube is connected to the main outlet pipe through the outlet pipe flowmeter; wherein the manipulator includes a controller 35 and a control circuit board 39, and the controller and the control circuit board are electrically connected;

[0044] The liquid exchanger 36 includes: a base, a shell 04, a liquid inlet pipe 02, a liquid outlet pipe 01, a liquid exchange controller, a drive motor 06 and a liquid exchange mechanism. The base and the shell 04 are made of metal or plastic. Five liquid outlet pipes 01 are selected, and one liquid inlet pipe 02 is selected.

[0045] The base is installed on the bottom of the device shell 04, and the base and the device shell 04 form a device cavity. The liquid exchange controller, the drive motor 06 and the liquid exchange mechanism are all arranged in the device cavity. The liquid inlet pipe 02 and the liquid outlet pipe 01 are both installed on the base. The liquid outlet end 14 of the liquid inlet pipe 02 is connected to the liquid inlet end 15 of the liquid exchange mechanism, and the liquid outlet end 14 of the liquid exchange mechanism is connected to the liquid inlet end 15 of the liquid outlet pipe 01. The liquid exchange mechanism is used to convert the liquid in the liquid inlet pipe 02 to the liquid outlet pipe 01. The liquid exchange mechanism is installed on the drive end of the drive motor 06, and the drive motor 06 is installed on the device shell 04. The control end of the drive motor 06 is electrically connected to the control end of the liquid exchange controller; the liquid inlet pipe 02 is installed in the middle of the base, and the liquid outlet pipe 01 is installed at the edge of the base;

[0046] The liquid exchange mechanism includes a liquid exchange bottom plate 10, a liquid exchange top plate 09 and a drive plate 08. The liquid exchange bottom plate 10 is installed on the base, the drive plate 08 is installed on the drive end of the drive motor 06, and the liquid exchange top plate 09 is installed on the drive plate 08. The liquid exchange bottom plate 10 and the liquid exchange top plate 09 form a liquid exchange cavity and are used to exchange liquid. The liquid inlet pipe 02 and the liquid outlet pipe 01 both pass through the liquid exchange bottom plate 10 to the liquid exchange cavity; the liquid exchange bottom plate 10 is provided with a bottom plate auxiliary flow channel 13, and the bottom plate auxiliary flow channel 13 is used to discharge excess liquid; the liquid exchange top plate 09 is provided with a top plate auxiliary flow channel and a liquid exchange flow channel, and the liquid exchange flow channel is arranged In the middle of the liquid exchange top plate 09, the top plate auxiliary flow channel is arranged on the edge of the liquid exchange top plate 09, and the liquid exchange flow channel is used to connect or disconnect the connection between the liquid inlet pipe 02 and the liquid outlet pipe 01; the liquid exchange bottom plate 10 is selected from hydrophobic ceramic material; the liquid exchange top plate 09 is selected from hydrophobic ceramic material; the liquid exchange bottom plate 10 is selected from a circular liquid exchange bottom plate 10, the liquid exchange top plate 09 is selected from a circular liquid exchange top plate 09, and the diameters of the liquid exchange bottom plate 10 and the liquid exchange top plate 09 are the same; the bottom plate auxiliary flow channel 13 is selected from an annular bottom plate auxiliary flow channel 13, the top plate auxiliary flow channel is selected from an annular top plate auxiliary flow channel, and the diameters of the top plate auxiliary flow channel and the bottom plate auxiliary flow channel 13 are the same;

[0047] Among them, a limit piece 12 is provided on the base, and a limit groove is provided on the liquid exchange chassis 10. The limit piece 12 and the limit groove cooperate with each other and are used to limit the liquid exchange chassis 10; the device shell 04 includes a shell cover 05 and a shell, the shell cover 05 is installed on the top of the shell, the base is installed on the bottom of the shell, and the drive motor 06 is installed on the shell; a heat sink 03 is provided on the base.

[0048] Specifically, assemble the fluid changer 36, connect the fluid inlet pipe to the external fluid inlet, connect multiple fluid outlet pipes to the external fluid outlet, and act as a fluid change controller. The fluid change controller controls the drive motor to rotate, and the drive motor drives the fluid change top plate to rotate through the drive plate, and switches the fluid change flow channel to the required fluid inlet pipe and fluid outlet pipe. If other fluid outlet pipes need to be replaced, the fluid change controller controls the drive motor to continue rotating, and switches the fluid change flow channel to the fluid inlet pipe and other fluid outlet pipes for fluid change operations.

[0049] Among them, an operation method of a liquid mixing system based on a liquid changer, the operation method steps are as follows:

[0050] Step 1: Preparation of hydrophobic ceramic materials

[0051] Alumina powder is selected, and corresponding molds with a liquid changing bottom plate and a liquid changing top plate are respectively used to perform high temperature firing to form a liquid changing bottom plate and a liquid changing top plate;

[0052] Weigh 3 parts of polymethylhydrogensiloxane, 15 parts of polystyrene, 35 parts of alumina and 47 parts of chloroform by weight, first add the polymethylhydrogensiloxane into the chloroform, and stir with a stirrer for 10 minutes, then add the alumina powder into the above solution, continue stirring for 1 hour, after stirring evenly, slowly add the polystyrene into the mixture, stir for 30 minutes, and prepare a hydrophobic coating mixture;

[0053] The hydrophobic coating mixture is added into the sprayer, and the hydrophobic coating mixture is evenly sprayed on the surface of the liquid exchange bottom plate and the liquid exchange top plate by the sprayer. After the spraying is completed, the liquid exchange bottom plate and the liquid exchange top plate are placed in a drying oven at 100° C. for 1 hour to prepare a hydrophobic liquid exchange bottom plate and a hydrophobic liquid exchange top plate;

[0054] Step 2: Assembly of the fluid changer

[0055] Select a base, a device shell, a liquid inlet pipe, multiple liquid outlet pipes, a liquid exchange controller, a drive motor, a liquid exchange chassis, a liquid exchange top plate, a drive sealing ring, a chassis sealing ring and a drive plate, and install the base on the bottom of the device shell. The base and the device shell form a device cavity. The liquid exchange controller, the drive motor, the liquid exchange chassis, the liquid exchange top plate, the drive sealing ring, the chassis sealing ring and the drive plate are all arranged in the device cavity. The liquid inlet pipe is installed on the middle part of the base, and multiple liquid outlet pipes are installed on the edge of the base, and the liquid inlet pipe and the liquid outlet pipe are passed through the liquid exchange chassis to the liquid exchange cavity. The liquid exchange top plate and the liquid exchange chassis cooperate with each other. The liquid exchange chassis is installed on the base, the drive plate is installed on the drive end of the drive motor, the liquid exchange top plate is installed on the drive plate, the drive motor is installed on the device shell, and the control end of the drive motor is electrically connected to the liquid exchange The control end of the liquid controller; the liquid exchange chassis is provided with a chassis auxiliary flow channel, the chassis auxiliary flow channel is used to discharge excess liquid, the liquid exchange top plate is provided with a top plate auxiliary flow channel and a liquid exchange flow channel, the liquid exchange flow channel is arranged in the middle of the liquid exchange top plate, the top plate auxiliary flow channel is arranged at the edge of the liquid exchange top plate, and the liquid exchange flow channel is used to connect or shut off the connection between the liquid inlet pipe and the liquid outlet pipe; a limit piece is provided on the base, and a limit groove is provided on the liquid exchange chassis, the limit piece and the limit groove cooperate with each other and are used to limit the liquid exchange chassis; a drive sealing ring is provided at the drive disk, the drive sealing ring is used to seal and prevent water from flowing into the drive motor, and a chassis sealing ring is provided on the liquid exchange chassis, and the chassis sealing ring is used to seal the connection between the liquid inlet pipe and the liquid outlet pipe and the liquid exchange chassis; the liquid exchange chassis here selects the liquid exchange chassis and the liquid exchange top plate of step one;

[0056] Step 3: Assembly of the liquid mixing system

[0057] Select the liquid changer of step 2, and then select a rack, a venturi tube, an inlet flowmeter, an outlet flowmeter, a controller, a liquid distributor, a liquid changer, a liquid exchange pipe, a main inlet pipe, a main outlet pipe and a one-way valve. Select at least two liquid distributors, and install the controller, the liquid distributor, the liquid changer and the liquid exchange pipe on the rack respectively. The control end of the controller is electrically connected to the control end of the liquid changer, the liquid outlet end of the liquid distributor is connected to the liquid inlet end of the liquid changer, and the liquid outlet end of the liquid changer is connected to the liquid inlet end of the liquid exchange pipe. The one-way valve is installed on the liquid exchange pipe, and the opening direction of the one-way valve is consistent with the liquid outlet direction. The liquid outlet end of the liquid exchange pipe is connected to one liquid inlet end of the venturi tube, and the other liquid inlet end of the venturi tube is connected to the main inlet pipe through the inlet flowmeter, and the liquid outlet end of the venturi tube is connected to the main outlet pipe through the outlet flowmeter.

[0058] Experimental testing was conducted on the hydrophobic fluid exchange bottom plate and fluid exchange top plate. Figure 7 This is a SEM image of a hydrophobic coating. From the SEM image, it can be seen that the coating is evenly distributed on the surface and there is a uniform distribution of nanowires; Figure 8 Schematic diagram of the contact angle of the hydrophobic coating. It can be seen that the contact angle can reach 160°, which has good hydrophobicity; Fig. 9This is a diagram of the water inlet and outlet flow rates with and without the hydrophobic coating. The water outlet diameter here is smaller than the water inlet diameter. It can be seen that the water outlet flow rate with the hydrophobic coating is higher.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid mixing system based on a liquid changer, characterized in that: The liquid mixing system comprises: a frame, a venturi tube, an inlet flowmeter, an outlet flowmeter, a manipulator, a liquid distributor, a liquid changer, a liquid exchange pipe, a main inlet pipe, a main outlet pipe and a one-way valve. At least two of the liquid distributors are selected. The manipulator, the liquid distributor, the liquid changer and the liquid exchange pipe are respectively installed on the frame. The control end of the manipulator is electrically connected to the control end of the liquid changer. The liquid outlet end of the liquid distributor is connected to the liquid inlet end of the liquid changer. The liquid outlet end of the liquid changer is connected to the liquid inlet end of the liquid exchange pipe. The one-way valve is installed on the liquid exchange pipe, and the opening direction of the one-way valve is consistent with the liquid outlet direction. The liquid outlet end of the liquid exchange pipe is connected to one liquid inlet end of the venturi tube, the other liquid inlet end of the venturi tube is connected to the main inlet pipe through the inlet flowmeter, and the liquid outlet end of the venturi tube is connected to the main outlet pipe through the outlet flowmeter.

2. A liquid mixing system based on a liquid changer according to claim 1, characterized in that: The liquid exchanger includes: a base, a shell, a liquid inlet pipe, a liquid outlet pipe, a liquid exchange controller, a drive motor and a liquid exchange mechanism. The base is installed on the bottom of the shell, and the base and the shell form a chamber. The liquid exchange controller, the drive motor and the liquid exchange mechanism are all arranged in the chamber. The liquid inlet pipe and the liquid outlet pipe are both installed on the base. The liquid outlet end of the liquid inlet pipe is connected to the liquid inlet end of the liquid exchange mechanism, and the liquid outlet end of the liquid exchange mechanism is connected to the liquid inlet end of the liquid outlet pipe. The liquid exchange mechanism is used to convert the liquid in the liquid inlet pipe to the liquid outlet pipe. The liquid exchange mechanism is installed on the drive end of the drive motor, and the drive motor is installed on the shell. The control end of the drive motor is electrically connected to the control end of the liquid exchange controller.

3. A liquid mixing system based on a liquid changer according to claim 2, characterized in that: At least two liquid outlet pipes are selected, and the liquid inlet pipe is installed in the middle of the base, and the liquid outlet pipe is installed at the edge of the base.

4. A liquid mixing system based on a liquid changer according to claim 3, characterized in that: The liquid exchange mechanism includes a liquid exchange bottom plate, a liquid exchange top plate and a drive plate, the liquid exchange bottom plate is installed on the base, the drive plate is installed on the drive end of the drive motor, and the liquid exchange top plate is installed on the drive plate. The liquid exchange bottom plate and the liquid exchange top plate form a liquid exchange cavity and are used to exchange the liquid. The liquid inlet pipe and the liquid outlet pipe both pass through the liquid exchange bottom plate to the liquid exchange cavity.

5. A liquid mixing system based on a liquid changer according to claim 4, characterized in that: The liquid exchange chassis is provided with a chassis auxiliary flow channel, and the chassis auxiliary flow channel is used to discharge excess liquid.

6. A liquid mixing system based on a liquid changer according to claim 4, characterized in that: The liquid exchange top plate is provided with a top plate auxiliary flow channel and a liquid exchange flow channel. The liquid exchange flow channel is arranged in the middle of the liquid exchange top plate, and the top plate auxiliary flow channel is arranged at the edge of the liquid exchange top plate. The liquid exchange flow channel is used to connect or disconnect the connection between the liquid inlet pipe and the liquid outlet pipe.

7. A liquid mixing system based on a liquid changer according to claim 4, characterized in that: The liquid exchange chassis is made of hydrophobic ceramic material.

8. The liquid mixing system based on a liquid changer according to claim 4, characterized in that: The liquid exchange top plate is made of hydrophobic ceramic material.

9. A liquid mixing system based on a liquid changer according to claim 4, characterized in that: The base is provided with a limiting member, and the fluid-changing chassis is provided with a limiting groove. The limiting member and the limiting groove cooperate with each other and are used to perform a limiting operation on the fluid-changing chassis.

10. A method for operating a liquid mixing system based on a liquid changer, characterized in that: The operation method steps are as follows: Step 1: Preparation of hydrophobic ceramic materials Alumina powder is selected, and corresponding molds with a liquid changing bottom plate and a liquid changing top plate are respectively used to perform high temperature firing to form a liquid changing bottom plate and a liquid changing top plate; Weigh 3-5 parts of polymethylhydrogensiloxane, 10-15 parts of polystyrene, 30-40 parts of alumina and 45-50 parts of chloroform by weight, first add the polymethylhydrogensiloxane into the chloroform, and stir with a stirrer for 10 minutes, then add the alumina powder into the above solution, continue stirring for 1 hour, after stirring evenly, slowly add the polystyrene into the mixture, stir for 30 minutes, and prepare a hydrophobic coating mixture; The hydrophobic coating mixture is added into the sprayer, and the hydrophobic coating mixture is evenly sprayed on the surface of the liquid exchange bottom plate and the liquid exchange top plate by the sprayer. After the spraying is completed, the liquid exchange bottom plate and the liquid exchange top plate are placed in a drying oven at 100° C. for 1 hour to prepare a hydrophobic liquid exchange bottom plate and a hydrophobic liquid exchange top plate; Step 2: Assembly of the fluid changer Select a base, a device shell, a liquid inlet pipe, multiple liquid outlet pipes, a liquid exchange controller, a drive motor, a liquid exchange chassis, a liquid exchange top plate, a drive sealing ring, a chassis sealing ring and a drive plate, and install the base on the bottom of the device shell. The base and the device shell form a device cavity. The liquid exchange controller, the drive motor, the liquid exchange chassis, the liquid exchange top plate, the drive sealing ring, the chassis sealing ring and the drive plate are all arranged in the device cavity. The liquid inlet pipe is installed on the middle part of the base, and multiple liquid outlet pipes are installed on the edge of the base, and the liquid inlet pipe and the liquid outlet pipe are passed through the liquid exchange chassis to the liquid exchange cavity. The liquid exchange top plate and the liquid exchange chassis cooperate with each other. The liquid exchange chassis is installed on the base, the drive plate is installed on the drive end of the drive motor, the liquid exchange top plate is installed on the drive plate, the drive motor is installed on the device shell, and the control end of the drive motor is electrically connected to the liquid exchange The control end of the liquid controller; the liquid exchange chassis is provided with a chassis auxiliary flow channel, the chassis auxiliary flow channel is used to discharge excess liquid, the liquid exchange top plate is provided with a top plate auxiliary flow channel and a liquid exchange flow channel, the liquid exchange flow channel is arranged in the middle of the liquid exchange top plate, the top plate auxiliary flow channel is arranged at the edge of the liquid exchange top plate, and the liquid exchange flow channel is used to connect or shut off the connection between the liquid inlet pipe and the liquid outlet pipe; a limit piece is provided on the base, and a limit groove is provided on the liquid exchange chassis, the limit piece and the limit groove cooperate with each other and are used to limit the liquid exchange chassis; a drive sealing ring is provided at the drive disk, the drive sealing ring is used to seal and prevent water from flowing into the drive motor, and a chassis sealing ring is provided on the liquid exchange chassis, and the chassis sealing ring is used to seal the connection between the liquid inlet pipe and the liquid outlet pipe and the liquid exchange chassis; the liquid exchange chassis here selects the liquid exchange chassis and the liquid exchange top plate of step one; Step 3: Assembly of the liquid mixing system Select the liquid changer of step 2, and then select a frame, a venturi tube, an inlet flowmeter, an outlet flowmeter, a manipulator, a liquid distributor, a liquid changer, a liquid exchange pipe, a main inlet pipe, a main outlet pipe and a one-way valve. At least two of the liquid distributors are selected, and the manipulator, the liquid distributor, the liquid changer and the liquid exchange pipe are respectively installed on the frame. The control end of the manipulator is electrically connected to the control end of the liquid changer, the liquid outlet end of the liquid distributor is connected to the liquid inlet end of the liquid changer, and the liquid outlet end of the liquid changer is connected to the liquid inlet end of the liquid exchange pipe. The one-way valve is installed on the liquid exchange pipe, and the opening direction of the one-way valve is consistent with the liquid outlet direction. The liquid outlet end of the liquid exchange pipe is connected to one liquid inlet end of the venturi tube, and the other liquid inlet end of the venturi tube is connected to the main inlet pipe through the inlet flowmeter, and the liquid outlet end of the venturi tube is connected to the main outlet pipe through the outlet flowmeter.

Images