CN216573029U

CN216573029U - Photocatalytic reaction device based on alternating magnetic field

Info

Publication number: CN216573029U
Application number: CN202123106571.8U
Authority: CN
Inventors: 邸丽景; 李红琴; 县涛; 孙小锋; 马珂; 马雪莲
Original assignee: Qinghai Normal University
Current assignee: Qinghai Normal University
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-24
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a photocatalytic reaction device based on an alternating magnetic field, which comprises a box body and a photocatalytic reaction assembly arranged in the box body; the photocatalytic reaction assembly comprises a reaction tank, a light source, a first driving motor for stirring blades, a lifting device, magnetic pole pieces and a support rod, wherein the light source is arranged below the reaction tank; the box is equipped with the controller, the controller is connected with a driving motor and elevating gear electricity respectively, and the box is equipped with door and control switch. The utility model effectively characterizes the catalytic performance of the composite piezoelectric photocatalyst by matching a three-dimensional stirring structure with an alternating magnetic field.

Description

Photocatalytic reaction device based on alternating magnetic field

Technical Field

The utility model belongs to the technical field of photocatalytic reaction devices, and particularly relates to a photocatalytic reaction device based on an alternating magnetic field.

Background

With the continuous development and improvement of the photocatalytic technology, some photocatalytic materials with special properties gradually come into the sight of people. For example, some of the piezoelectric photocatalysts, BaTiO, coated with magnetic material₃@Fe₃O₄，BiFeO₃@Fe₃O₄Etc. the composite photocatalyst with the structure is mainly made of magnetic material (Fe)₃O₄) The surface is wrapped with a layer of semiconductor (BaTiO) with photocatalytic performance and piezoelectric performance₃And BiFeO₃Etc.) can not only carry out photocatalytic reaction under the drive of light, but also can cause the composite photocatalyst to carry out piezoelectric catalytic reaction under the action of an external magnetic field. The existing device for characterizing the photocatalytic efficiency cannot perform effective catalytic performance characterization on the composite photocatalyst. Therefore, there is a need to develop a set of experimental apparatus capable of effectively measuring and characterizing the catalytic performance of the piezoelectric photocatalyst wrapped with the magnetic material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a photocatalytic reaction device based on an alternating magnetic field, and aims to solve the problems in the prior art in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a photocatalytic reaction device based on an alternating magnetic field comprises a box body and a photocatalytic reaction assembly arranged in the box body; the photocatalytic reaction assembly comprises a reaction tank, a light source, a first driving motor for stirring blades, a lifting device, magnetic pole pieces and a support rod, wherein the light source is arranged below the reaction tank; the box is equipped with the controller, the controller is connected with first driving motor and elevating gear electricity respectively, and the box is equipped with door and control switch, control switch is connected with the controller electricity.

The stirring blade carries out three-dimensional stirring to catalyst and degradation product in the reaction tank under the combined action of first driving motor and elevating gear, makes its intensive mixing, and the magnetic pole piece is rotatory around the reaction tank and is applyed alternating magnetic field, makes the compound photocatalyst carry out the piezoelectricity catalytic reaction, controls and adjusts the reaction process through control switch to realize effective table and accurate control to the catalytic performance of piezoelectricity photocatalyst.

Furthermore, the magnetic pole pieces are connected to the high end of the rotating rod, the low end of the rotating rod is surrounded to form a circular ring and is arranged below the light source, the bottom surface of the circular ring is provided with teeth and is in transmission connection with a second driving motor, and the second driving motor is connected with the controller through a circuit. Experimenters can adjust the rotating speed of the second driving motor in real time according to the photocatalytic reaction state, so that the alternating magnetic field is controlled.

Furthermore, the upper part of the supporting rod is provided with teeth, and a gear at the output end of a built-in motor of the lifting device is meshed with the teeth at the upper part of the connecting rod.

Further, be equipped with automatic sampling device in the box, automatic sampling device includes peristaltic pump, cell, support and power device, the one end of the hose of peristaltic pump sets up in the reaction tank, and the liquid outlet of peristaltic pump sets up in the cell top, and the cell sets up in the support top surface, power device includes rack and push motor, push motor is fixed in the box, and push motor's output sets up wheel and rack toothing, the one end and the leg joint of rack, peristaltic pump and push motor are connected with the controller electricity respectively.

Automatic sampling device passes through peristaltic pump control sampling time and sample quantity, and cooperation power device promotes the support and makes different cuvettes remove the liquid outlet to the peristaltic pump in proper order to guarantee sampling time and sample interval time's accuracy, need not manual operation sample, reduce system error. The photocatalytic reaction subassembly cooperates with automatic sampling device, effectively reduces experimenter's working strength to improve experimental efficiency, promote the degree of accuracy of experimental data.

Further, the support top surface interval sets up the recess, the cell embedding recess is interior. The recess is used for spacing and fixed cell, avoids the cell to remove the process at the support and emptys.

Furthermore, the box body is provided with an observation window. The observation window is convenient for the experimenter to observe the reaction process in real time, thereby adjusting through the control switch.

Furthermore, the surface of the box body is provided with a display screen, and the display screen is electrically connected with the controller.

Compared with the defects and shortcomings of the prior art, the utility model has the following beneficial effects:

1. the utility model relates to a photocatalytic reaction device based on an alternating magnetic field, wherein a first driving motor and a lifting device are matched to form three-dimensional stirring, so that a catalyst and a degradation product are fully mixed, a magnetic pole piece rotates around a reaction tank to form the alternating magnetic field, a composite photocatalyst is subjected to piezoelectric reaction, and the effective representation of the catalytic performance of the piezoelectric photocatalyst is realized.

2. Automatic sampling device effectively replaces artifical sample, through the peristaltic pump to sampling time and the accurate control of sample interval time, power device promotes the support, makes the cell remove in proper order to the peristaltic pump outlet, and the peristaltic pump realizes automatic sample with power device cooperation, promotes sampling efficiency, reduces sampling error.

3. The box sets up the observation window, but experimenter real-time observation reaction progress to adjust in real time through control switch and display screen, accurate control, this photocatalytic reaction device easy operation, structural design is reasonable.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present invention.

Fig. 2 is a schematic view of the internal structure of the case in embodiment 1 of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.

FIG. 5 is a schematic view showing the construction of the photocatalytic reaction module and the automatic sampling apparatus in example 2 of the present invention.

Fig. 6 is a schematic view of the internal structure of the case in embodiment 2 of the present invention.

FIG. 7 is a schematic structural view of a stent in example 2 of the present invention.

Fig. 8 is a schematic structural view of the power unit and the bracket in accordance with embodiment 2 of the present invention.

In the figure: 1-a box body; 11-a control switch; 12-a display screen; 13-an observation window; 2-a photocatalytic reaction component; 21-a reaction tank; 22-a light source; 23-a pole piece; 24-a first drive motor; 25-a lifting device; 26-a support bar; 27-stirring blades; 28-a second drive motor; 29-rotating rod; 3-an automatic sampling device; 31-a peristaltic pump; 32-a scaffold; 321-a groove; 33-a cuvette; 34-a power plant; 341-rack; 342-a push motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example 1

Referring to fig. 1, a photocatalytic reaction apparatus based on an alternating magnetic field includes a photocatalytic reaction assembly 2 for performing a photocatalytic reaction and measuring photocatalytic reaction efficiency; the box body 1 is used for containing the photocatalytic reaction component 2 and monitoring and controlling the photocatalytic reaction.

Referring to fig. 2, the photocatalytic reaction assembly 2 includes a reaction tank 21, a stirring blade 27, a first driving motor 24, a support rod 26, a light source 22, and a magnetic pole piece 23; the light source 22 is arranged on the inner bottom surface of the box body 1 through the chassis, the reaction tank 21 is arranged above the light source 22, the reaction tank 21 is made of a light-transmitting material, the light source 22 provides illumination for photocatalytic reaction through the bottom of the reaction tank 21, and the light source 22 can be a xenon lamp, an ultraviolet lamp, an infrared lamp or the like; the stirring blade 27 is positioned in the reaction tank 21, the stirring blade 27 is connected with the first driving motor 24 above the stirring blade 27 through a connecting rod, the first driving motor 24 rotates and drives the stirring blade 27 to rotate, the first driving motor 24 is arranged at the upper part of the supporting rod 26, the bottom of the supporting rod 26 is fixed at the bottom surface of the box body 2, and the stirring blade 27 rotates to effectively mix the catalyst and the degradation product; magnetic pole piece 23 sets up in reaction tank 21 both sides relatively, two magnetic pole pieces 23 are connected with the high-end of two bull sticks 29 respectively, the low side of two bull sticks 29 sets up in light source 22 below and is connected with second driving motor 28, it is rotatory to drive bull stick 29 through second driving motor 28, thereby it rotates and forms alternating magnetic field around reaction tank 21 to drive magnetic pole piece 23, it carries out the piezoelectricity catalysis to order to make compound pressure electro-optic catalyst, specifically, refer to fig. 3, the bottom of two bull sticks 29 is enclosed and is closed formation ring, the ring bottom surface is equipped with the tooth and with set up in the gear engagement of second driving motor 28 output.

In order to promote the efficiency of the photocatalytic reaction, the supporting rod 26 is sleeved with the lifting device 25, the first driving motor 24 is fixed on one side of the lifting device 25, it is ensured that the connecting rod is arranged at the center of the reaction tank 21, the lifting device 25 is driven by the built-in motor, the upper portion of the supporting rod 26 is provided with a rack matched with the lifting device 25, the lifting device 25 drives the rotating blades 27 to vertically move in the photocatalytic reaction process, three-dimensional stirring is formed, and then the catalytic efficiency is improved.

Box 1, the inside cavity for holding the photocatalytic reaction subassembly of box 1, box 1 is equipped with the door, and a lateral wall is equipped with observation window 13, observation window 13 is made by glass, the preferred stainless steel material preparation of box 1, box 1 is integrated with controller and control switch 11, the controller has first driving motor 24 through the line connection respectively, second driving motor 28 and elevating gear 25's built-in motor, the controller passes through the circuit and is connected with control switch 11, control switch 11 includes switch, rotating vane regulating switch, pole piece regulating switch and elevating gear regulating switch, box 1 still is equipped with display screen 12, display screen 12 passes through the circuit and is connected with the controller, be convenient for direct-viewing display and the rotational speed of adjusting each part, thereby going on of accurate control photocatalytic reaction.

Example 2

As a further improvement of the present invention, it is different from embodiment 1 in that:

in order to make the sampling more accurate and convenient, an automatic sampling device 3 which comprises a peristaltic pump 31, a cuvette 33, a bracket 32 and a power device 34 is arranged in the box body (refer to 4-6); the end part of a hose of the peristaltic pump 31 is arranged in the reaction tank 21, and a liquid outlet of the peristaltic pump 31 is arranged above the cuvette 33; referring to fig. 7 and 8, the grooves 321 are formed in the top of the bracket 32 at intervals, the cuvettes 33 are embedded into the grooves 321, the power device 34 includes a rack 341 and a push motor 342, the rack 341 is engaged with a gear arranged at the output end of the push motor 342, one end of the rack 341 is connected with the bracket 342, the push motor 342 is fixed in the box body 1, the rack is driven to move through the rotation of the push motor 342, so that the bracket 32 is driven to move, and each cuvette 33 is sequentially pushed to the liquid outlet end of the peristaltic pump 31.

The peristaltic pump 31 and the pushing motor 342 are connected with a controller through lines, and the controller is connected with a sampling switch, a peristaltic pump adjusting switch and a power device adjusting switch which are arranged on the box body 1.

The sampling interval time is preset, the peristaltic pump 31 and the power device 34 are controlled to be matched through the controller, accurate sampling is achieved, system errors are effectively reduced, and the measuring result is more accurate.

The utility model provides a photocatalytic reaction device based on an alternating magnetic field, wherein a lifting device enables a stirring blade to move up and down to form a three-dimensional stirring structure, so that a catalyst and a degradation product are effectively mixed, the alternating magnetic field formed by a magnetic pole piece enables a piezoelectric composite photocatalyst to carry out piezoelectric catalysis, the catalysis efficiency is effectively improved, an adjusting switch arranged on a box body is used for accurately adjusting and controlling an experimental process, and the accuracy of experimental data is ensured. Meanwhile, an automatic sampling device is further arranged in the box body, manual sampling is not needed, sampling time and intervals are accurate, and system errors are reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A photocatalytic reaction device based on an alternating magnetic field is characterized by comprising a box body and a photocatalytic reaction assembly arranged in the box body; the photocatalytic reaction assembly comprises a reaction tank, a light source, a first driving motor for stirring blades, a lifting device, magnetic pole pieces and a support rod, wherein the light source is arranged below the reaction tank, the magnetic pole pieces are arranged on two opposite sides of the reaction tank and rotate around the reaction tank, the stirring blades are arranged in the reaction tank and are connected with the first driving motor through a connecting rod, the lifting device is sleeved on the upper portion of the support rod, the first driving motor is fixed on the surface of the lifting device, and the bottom of the support rod is fixed on the bottom surface of the box body; the box is equipped with the controller, the controller is connected with first driving motor and elevating gear electricity respectively, and the box is equipped with door and control switch, control switch is connected with the controller electricity.

2. The alternating magnetic field-based photocatalytic reaction device as set forth in claim 1, wherein the magnetic pole piece is connected to the high end of the rotating rod, the low end of the rotating rod is enclosed to form a circular ring and is disposed under the light source, the bottom surface of the circular ring is provided with teeth and is in transmission connection with a second driving motor, and the second driving motor is connected with the controller through a line.

3. The alternating magnetic field-based photocatalytic reaction device according to claim 1, wherein the upper portion of the support rod is provided with teeth, and the gear of the output end of the built-in motor of the elevating means is engaged with the teeth of the upper portion of the connecting rod.

4. The photocatalytic reaction device based on alternating magnetic field according to claim 1, characterized in that an automatic sampling device is arranged in the box body, the automatic sampling device comprises a peristaltic pump, a cuvette, a bracket and a power device, one end of a hose of the peristaltic pump is arranged in the reaction tank, a liquid outlet of the peristaltic pump is arranged above the cuvette, the cuvette is arranged on the top surface of the bracket, the power device comprises a rack and a pushing motor, the pushing motor is fixed in the box body, the output end of the pushing motor is provided with a gear and a rack which are engaged, one end of the rack is connected with the bracket, and the peristaltic pump and the pushing motor are respectively electrically connected with the controller.

5. The alternating magnetic field-based photocatalytic reaction device of claim 4, wherein the top surface of the holder is provided with grooves at intervals, and the cuvette is inserted into the grooves.

6. The alternating magnetic field-based photocatalytic reaction device of claim 1, wherein the case is provided with an observation window.

7. The alternating magnetic field-based photocatalytic reaction device as set forth in claim 1, wherein a display screen is provided on the surface of the case, and the display screen is electrically connected to the controller.