A soil conditioner testing bin

Abstract

The utility model provides a kind of soil conditioner test bin, including bin, test column, sample pot, test cavity, open-close door, pH sensor, air extraction unit, start switch and aeration flow channel;When the adjustment effect of different conditioner dosage, different soil types to soil acidity and alkalinity needs to be compared, staff only needs to place the soil mixed with different conditioner dosage or the soil of same conditioner dosage but different types in different sample pots, then place sample pot in different test cavity, then close open-close door, and press the start switch in corresponding test cavity, start air extraction unit;Therefore, the utility model realizes the simultaneous test of multiple samples, eliminates the operation of repeated test for multiple times when single test is used previously, eliminates the problem of time-consuming and laborious and seriously affecting test efficiency in whole test process.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, specifically to a soil conditioner test chamber. Background Technology

[0002] Soil acidity conditioners are substances that can regulate soil pH and reduce soil acidity. They are usually composed of natural minerals, alkaline substances, or organic materials. By neutralizing acidic substances in the soil, they can improve the soil's chemical properties and create a more suitable soil environment for plant growth. Therefore, the improvement of acidic soil is an important research direction in agricultural production and soil remediation, and experiments on regulating soil pH using acidity conditioners are a key step in studying the effects of conditioners.

[0003] Currently, the experimental setups used in such experiments typically only allow for one set of tests at a time. When it is necessary to compare the effects of different dosages of conditioners and different soil types on soil pH adjustment, staff need to repeat the experiment multiple times, which is time-consuming and labor-intensive, severely impacting experimental efficiency. Therefore, there is an urgent need for an experimental chamber that can simultaneously conduct multiple sets of experiments. Utility Model Content

[0004] The purpose of this invention is to provide a soil conditioner testing chamber to address the problems raised in the background art. To achieve the above objective, this invention provides the following technical solution: a chamber body with several test columns, several test chambers disposed on the test columns for placing sample basins, and an opening and closing door disposed on the test chambers. A pH sensor is inserted inside the sample basin. Each test chamber is connected to an air extraction unit, which is installed on the side wall of the test column. The air extraction unit is used to collect ammonia gas generated during the test. A start switch for controlling the start and stop of the air extraction unit is provided on the outer wall of the test chamber. The test chamber is also provided with several air passages communicating with the outside.

[0005] Furthermore, the test chamber has an air intake chamber at its inner top, which is connected to the interior of the test chamber through an air intake hole group. The air extraction unit includes an air extraction pump and a collection bottle installed on the test column. The collection bottle contains a solvent for collecting ammonia. The air inlet pipe of the air extraction pump is connected to the air intake chamber, and the air outlet pipe of the air extraction pump is inserted below the liquid surface of the solvent. The collection bottle is also provided with a vent pipe that communicates with the outside, and the end of the vent pipe is located above the liquid surface of the solvent.

[0006] Furthermore, the air extraction units that communicate with the test chamber in the same test column are all installed on the same side of the test column. The test column is provided with an exhaust pipe, and several exhaust pipes in the air extraction units on the same side are all connected to one exhaust pipe. The top of the exhaust pipe is connected to the outside.

[0007] Furthermore, a support plate is fixed to the side wall of the test column, and a limiting frame is provided on the support plate, with the lower part of the collection bottle cooperating with the limiting frame.

[0008] Furthermore, the end of the vent pipe is provided with a first telescopic tube, the first telescopic tube including a first fixed tube and a first sliding tube that are sequentially connected to the vent pipe. The first fixed tube is fixedly connected to the end of the vent pipe. The bottom of the first fixed tube is provided with a first limiting platform. The outer edge of the first limiting platform is slidably connected to the inner wall of the first sliding tube. The top of the first sliding tube is fixedly connected with a first limiting part, which is slidably connected to the first fixed tube. A first sealing rubber ring with its outer edge tightly attached to the inner wall of the first sliding tube is fixedly connected above the first limiting platform. The distance between the first fixed tube and the collection bottle is greater than the height of the limiting frame.

[0009] Furthermore, the end of the vent pipe is provided with a second telescopic pipe. The second telescopic pipe includes a second fixed pipe and a second sliding pipe that are sequentially connected to the vent pipe. The second fixed pipe is fixedly connected to the end of the vent pipe. The bottom of the second fixed pipe is provided with a second limiting platform. The outer edge of the second limiting platform is slidably connected to the inner wall of the second sliding pipe. The top of the second sliding pipe is fixedly connected with a second limiting part. The second limiting part is slidably connected to the second fixed pipe. A second sealing rubber ring with its outer edge tightly attached to the inner wall of the second sliding pipe is fixedly connected above the second limiting platform. The distance between the second fixed pipe and the collection bottle is greater than the height of the limiting frame.

[0010] Furthermore, a first push plate and a second push plate are fixedly connected to the top and middle part of the first sliding tube, respectively, and a third push plate is fixedly connected to the top of the second sliding tube. The third push plate is located between the first push plate and the second push plate. The diameter of the first push plate, the second push plate and the third push plate is all greater than 1 / 2 of the distance between the axis of the first sliding tube and the axis of the second sliding tube.

[0011] Furthermore, when the second push plate abuts against the top of the collection bottle: the first sliding tube is inserted below the surface of the solvent, the bottom of the first push plate abuts against the top of the third push plate, the second sliding tube is inserted into the collection bottle and its end is above the surface of the solvent, the distance between the end face of the first sliding tube below the liquid surface and the end face of the second sliding tube above the liquid surface is taken as h, and the distance between the second push plate and the first push plate is less than h.

[0012] Furthermore, a weighing module is provided at the bottom of the test chamber, the sample basin is placed on the test end of the weighing module, and a water supply nozzle connected to a water pump is installed at the top of the test chamber. The water pump is connected to the weighing module.

[0013] Furthermore, each of the test chambers is equipped with an environmental control component; the middle of the chamber is provided with polygonal heat dissipation holes with the same number of side walls as the number of test columns, the side of one test column facing away from the opening and closing door is the side wall of the heat dissipation hole, the electronic components in the environmental control component are all installed on the side wall of the heat dissipation hole, the bottom of the chamber is fixedly connected to a support frame, and the inside of the support frame is provided with a cooling fan aligned with the heat dissipation hole.

[0014] Furthermore, the environmental control components include a temperature control module, a humidity control module, and a light control module. The humidity control module includes a spray humidifier, a dehumidifying fan, and a humidity sensor. The spray humidifier is located at the top of the test chamber, and the dehumidifying fan is located on the side wall of the test chamber. The temperature control module includes a heating element, a cooling element, and a temperature sensor. The light control module includes an LED simulated light source and a light sensor. The LED simulated light source can adjust the light intensity and spectrum.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When it is necessary to compare the effects of different amounts of conditioner and different soil types on soil pH adjustment, the staff only needs to place soil mixed with different amounts of conditioner or soil of the same amount of conditioner but different types into different sample basins, then place the sample basins into different test chambers, close the opening and closing door, and press the start switch in the corresponding test chamber to start the air extraction unit; therefore, this utility model realizes simultaneous testing of multiple samples, eliminating the need for repeated testing operations when using a single test in the past, and eliminating the problem that the entire test process is time-consuming, labor-intensive, and seriously affects the test efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0019] Figure 3 for Figure 2 A partial sectional view diagram.

[0020] The components are as follows: 1. Chamber body; 2. Test column; 3. Test chamber; 4. Opening and closing door; 5. Weighing module; 6. pH sensor; 7. Sample basin; 8. Support frame; 9. Start switch; 10. Vacuum unit; 11. Exhaust pipe; 12. Inlet pipe; 13. Vacuum pump; 14. Outlet pipe; 15. Collection bottle; 16. Limiting frame; 17. Vent pipe; 18. Air passage; 19. Second sealing rubber ring; 20. Third push plate; 21. Second fixing pipe; 22. First fixing pipe; 23. First push plate; 24. Second push plate; 25. First sliding pipe; 26. Second sliding pipe. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] Example: Please refer to Figure 1-3 A soil conditioner test chamber includes a chamber body 1 with several test columns, several test chambers 3 located on the test columns 2 for placing sample basins 7, and an opening and closing door 4 on the test chambers 3. A pH sensor 6 is inserted inside the sample basin 7. Each test chamber 3 is connected to an extraction unit 10, which is installed on the side wall of the test column 2. The extraction unit 10 is used to collect ammonia gas generated during the test. The outer wall of the test chamber 3 is provided with a start switch 9 for controlling the start and stop of the extraction unit 10. The test chamber 3 is also provided with several air passages 18 communicating with the outside. When the sample basin 7 is placed in the test chamber 3, the opening and closing door 4 is closed, and the start switch 9 is pressed to start the extraction unit 10, thereby extracting ammonia gas inside the test chamber 3 during the test, providing a basis for the determination of hydrogen and nitrogen loss, and ensuring the necessary test data.

[0023] When comparing the effects of different conditioner dosages and soil types on soil pH regulation, staff only need to place soils mixed with different conditioner dosages or soils of the same conditioner dosage but different types into different sample basins 7. Then, sample basins 7 with the same soil but different dosages are placed in different test chambers 3 of the same test column 2, and sample basins 7 with different soils but the same dosage are placed in different test chambers 3 at the same height in different test columns 2. Thus, at this time, the soils in sample basins 7 at the same height around the chamber 1 are different, but the dosage of conditioner is the same; the soils in sample basins 7 in the same column are the same, but the dosage of conditioner is different. This allows for simultaneous testing of multiple samples, and provides a clear and intuitive observation and comparison of the data from different sample basins 7. This eliminates the need for repeated testing operations required in previous single-sample tests, thus eliminating the time-consuming and labor-intensive process that seriously affects the efficiency of the test.

[0024] In one embodiment, the top of the test chamber 3 is provided with an air intake chamber, which is connected to the interior of the test chamber 3 through an air intake hole assembly. The air extraction unit 10 includes an air extraction pump 13 and a collection bottle 15 mounted on the test column 2. The collection bottle 15 contains a solvent for collecting ammonia. The air inlet pipe 12 of the air extraction pump 13 is connected to the air intake chamber, and the air outlet pipe 14 of the air extraction pump 13 is inserted below the liquid surface of the solvent. The collection bottle 15 is also provided with a vent pipe 17 connected to the outside, with the end of the vent pipe 17 located above the liquid surface of the solvent, thereby achieving the absorption of ammonia. All air extraction units 10 connected to the test chamber 3 in the same test column 2 are installed on the same side of the test column 2. The test column 2 is equipped with an exhaust pipe 11. Several vent pipes 17 in the extraction unit 10 on the same side are connected to an exhaust pipe 11. The top of the exhaust pipe 11 is connected to the outside, which facilitates the centralized discharge of residual gas after the solvent absorbs ammonia. The solvent can be water directly for collecting ammonia, or some colorimetric reagents for harmful gases can be added to the solvent to qualitatively evaluate whether certain conditioning agents will produce harmful gases. The collection bottle 15 is a brown light-proof bottle. A support plate is fixed to the side wall of the test column 2. A limiting frame 16 is provided on the support plate. The lower part of the collection bottle 15 cooperates with the limiting frame 16 to prevent the collection bottle 15 from falling.

[0025] Normally, to improve the efficiency of inserting the vent pipe 14 and vent pipe 17 into the collection bottle 15, both the vent pipe 14 and vent pipe 17 are rigid pipes. When the collection bottle 15 is limited by the limiting frame 16, it can only be removed from the limiting frame 16 from top to bottom. However, because the vent pipe 14 and vent pipe 17 are rigid pipes, when the collection bottle 15 moves from bottom to top, the vent pipe 14 and vent pipe 17 will be further inserted into the collection bottle 15, resulting in a longer stroke for the vent pipe 14 and vent pipe 17 to be pulled out. However, in this embodiment, since there are several suction units 10 in the same vertical direction, the space occupied by each suction unit 10 is limited. If the vent pipe 14 and vent pipe 17 are pulled out directly, they are prone to interference with other suction units 10. If the collection bottle 15 is pulled out from top to bottom, interference will also occur.

[0026] Based on the above problems, the end of the vent pipe 14 in this utility model is provided with a first telescopic pipe. The first telescopic pipe includes a first fixed pipe 22 and a first sliding pipe 25 that are sequentially connected to the vent pipe 14. The first fixed pipe 22 is fixedly connected to the end of the vent pipe 14. The bottom of the first fixed pipe 22 is provided with a first limiting platform. The outer edge of the first limiting platform is slidably connected to the inner wall of the first sliding pipe 25. The top of the first sliding pipe 25 is fixedly connected with a first limiting part, which is slidably connected to the first fixed pipe 22. A first sealing rubber ring with its outer edge tightly attached to the inner wall of the first sliding pipe 25 is fixedly connected above the first limiting platform to prevent gas leakage. The distance between the first fixed pipe 22 and the collection bottle 15 is greater than the height of the limiting frame 16. The end of the vent pipe 17 is provided with a second telescopic pipe. The second telescopic pipe includes a second fixed pipe 22 that is sequentially connected to the vent pipe 17. The first and second sliding tubes 26 and the second fixed tube 21 are fixedly connected to the end of the venting tube 17. The bottom of the second fixed tube 21 is provided with a second limiting platform. The outer edge of the second limiting platform is slidably connected to the inner wall of the second sliding tube 26. The top of the second sliding tube 26 is fixedly connected with a second limiting part, which is slidably connected to the second fixed tube 21. A second sealing rubber ring 19 with its outer edge tightly attached to the inner wall of the second sliding tube 26 is fixedly connected above the second limiting platform. The distance between the second fixed tube 21 and the collection bottle 15 is greater than the height of the limiting frame 16. Therefore, when it is necessary to remove the collection bottle 15, it is only necessary to push the first fixed tube 22 and the second fixed tube 21 out of the collection bottle 15 and make the bottom surfaces of the first fixed tube 22 and the second fixed tube 21 flush with the first fixed tube 22 and the second fixed tube 21. Then the collection bottle 15 can be removed from the limiting frame 16.

[0027] Furthermore, a first push plate 23 and a second push plate 24 are fixedly connected to the top and middle of the first sliding tube 25, respectively, and a third push plate 20 is fixedly connected to the top of the second sliding tube 26. The third push plate 20 is located between the first push plate 23 and the second push plate 24. The diameters of the first push plate 23, the second push plate 24, and the third push plate 20 are all greater than 1 / 2 of the distance between the axis of the first sliding tube 25 and the axis of the second sliding tube 26. When the second push plate 24 abuts against the top of the collection bottle 15: the first sliding tube 25 is inserted below the surface of the solvent, the first... The bottom of the push plate 23 abuts against the top of the third push plate 20. The second sliding tube 26 is inserted into the collection bottle 15 and its end is above the surface of the solvent. The distance between the end face of the first sliding tube 25 below the liquid surface and the end face of the second sliding tube 26 above the liquid surface is h. The distance between the second push plate 24 and the first push plate 23 is less than h. Thus, the sliding adjustment of the first sliding tube 25 and the second sliding tube 26 can be achieved by pushing the first push plate 23 or the second push plate 24, thereby improving the disassembly and assembly efficiency of the collection bottle 15.

[0028] In other embodiments, a weighing module 5 is provided at the bottom of the test chamber 3, the sample basin 7 is placed on the test end of the weighing module 5, and a water supply nozzle connected to a water pump is installed at the top of the test chamber 3; the water pump is connected to the weighing module; thereby ensuring that the moisture in the sample is within a relatively constant range and ensuring the accuracy of the test.

[0029] In other embodiments, each test chamber 3 is also equipped with an environmental control component; the middle of the chamber 1 is provided with polygonal heat dissipation holes with the same number of side walls as the number of test columns 2. The side of a test column 2 facing away from the closing door 4 is the side wall of the heat dissipation hole. The electronic components in the environmental control component are all installed on the side wall of the heat dissipation hole. The bottom of the chamber 1 is fixedly connected to a support frame 8. The support frame 8 is equipped with a heat dissipation fan aligned with the heat dissipation hole, thereby achieving a clear circuit layout and facilitating unified heat dissipation of electronic components, reducing the installation space of the heat dissipation module. In order to improve the heat dissipation quality, several heat dissipation fans are also provided at different heights of the heat dissipation hole, thereby ensuring that the electronic components at the top are effectively cooled.

[0030] The environmental control components include a temperature control module, a humidity control module, and a light control module. The humidity control module includes a spray humidifier, a dehumidifying fan, and a humidity sensor. The spray humidifier is located at the top of the test chamber 3, and the dehumidifying fan is located on the side wall of the test chamber 3. The temperature control module includes a heating element, a cooling element, and a temperature sensor. The light control module includes an LED simulated light source and a light sensor. The LED simulated light source can adjust the light intensity and spectrum. First, it can provide uniform and stable environmental conditions for all samples. Second, it can achieve controllability of environmental parameters, which is conducive to monitoring the dynamic changes of parameters such as soil temperature, humidity, pH value, and light intensity during the experiment, thus facilitating the deduction of the key time points of soil conditioner action.

[0031] Working principle: When it is necessary to compare the effects of different amounts of conditioner and different soil types on soil pH adjustment, the staff only needs to place soil mixed with different amounts of conditioner or soil of the same amount of conditioner but different types in different sample basins 7. Then, place sample basins 7 of the same soil but different amounts in different test chambers 3 of the same test column 2. Place sample basins 7 of different soil but the same amount in different test chambers 3 of the same height in different test columns 2. Then close the opening and closing door 4 and press the start switch 9 in the corresponding test chamber 3 to start the air extraction unit 10.

[0032] At this point, the soil in the sample basins 7 at the same height around the chamber 1 is different, but the amount of conditioner used is the same; the soil in the sample basins 7 in the same column is the same, but the amount of conditioner used is different; thus, while testing multiple samples simultaneously, the data from different sample basins 7 can be observed and compared intuitively, thereby eliminating the need for repeated testing operations when using a single test in the past, and eliminating the problem that the entire test process is time-consuming, labor-intensive, and seriously affects the test efficiency.

[0033] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A soil conditioner test cell characterized by, The test chamber includes a chamber (1) with several test columns (2), several test chambers (3) on the test columns (2) for placing sample basins (7), and opening and closing doors (4) on the test chambers (3). A pH sensor (6) is inserted inside the sample basin (7). Each test chamber (3) is connected to an air extraction unit (10). The air extraction unit (10) is installed on the side wall of the test column (2) and is used to collect the ammonia gas generated during the test. The outer wall of the test chamber (3) is provided with a start switch (9) for controlling the start and stop of the air extraction unit (10). The test chamber (3) is also provided with several air passages (18) that communicate with the outside.

2. The soil conditioner test chamber according to claim 1, characterized in that, The test chamber (3) has an air intake chamber at its top. The air intake chamber is connected to the interior of the test chamber (3) through an air intake hole group. The air extraction unit (10) includes an air extraction pump (13) and a collection bottle (15) installed on the test column (2). The collection bottle (15) contains a solvent for collecting ammonia. The air inlet pipe (12) of the air extraction pump (13) is connected to the air intake chamber. The air outlet pipe (14) of the air extraction pump (13) is inserted below the liquid surface of the solvent. The collection bottle (15) is also provided with a vent pipe (17) that communicates with the outside. The end of the vent pipe (17) is located above the liquid surface of the solvent.

3. The soil conditioner test cell of claim 2, wherein, The air extraction units (10) connected to the test chamber (3) in the same test column (2) are all installed on the same side of the test column (2). The test column (2) is provided with an exhaust pipe (11). Several exhaust pipes (17) in the air extraction units (10) on the same side are connected to one exhaust pipe (11). The top of the exhaust pipe (11) is connected to the outside.

4. The soil conditioner test cell of claim 2, wherein, A support plate is fixed to the side wall of the test column (2), and a limiting frame (16) is provided on the support plate. The lower part of the collection bottle (15) cooperates with the limiting frame (16).

5. The soil conditioner test cell of claim 4, wherein, The end of the vent pipe (14) is provided with a first telescopic pipe. The first telescopic pipe includes a first fixed pipe (22) and a first sliding pipe (25) that are connected to the vent pipe (14) in sequence. The first fixed pipe (22) is fixedly connected to the end of the vent pipe (14). The bottom of the first fixed pipe (22) is provided with a first limiting platform. The outer edge of the first limiting platform is slidably connected to the inner wall of the first sliding pipe (25). The top of the first sliding pipe (25) is fixedly connected with a first limiting part. The first limiting part is slidably connected to the first fixed pipe (22). The top of the first limiting platform is fixedly connected with a first sealing rubber ring whose outer edge is in close contact with the inner wall of the first sliding pipe (25). The distance between the first fixed pipe (22) and the collection bottle (15) is greater than the height of the limiting frame (16).

6. The soil conditioner test chamber according to claim 5, characterized in that, The end of the vent pipe (17) is provided with a second telescopic pipe. The second telescopic pipe includes a second fixed pipe (21) and a second sliding pipe (26) that are connected to the vent pipe (17) in sequence. The second fixed pipe (21) is fixedly connected to the end of the vent pipe (17). The bottom of the second fixed pipe (21) is provided with a second limiting platform. The outer edge of the second limiting platform is slidably connected to the inner wall of the second sliding pipe (26). The top of the second sliding pipe (26) is fixedly connected with a second limiting part. The second limiting part is slidably connected to the second fixed pipe (21). The upper part of the second limiting platform is fixedly connected with a second sealing rubber ring (19) whose outer edge is tightly attached to the inner wall of the second sliding pipe (26). The distance between the second fixed pipe (21) and the collection bottle (15) is greater than the height of the limiting frame (16).

7. The soil conditioner test chamber according to claim 6, characterized in that, The top and middle parts of the first sliding tube (25) are respectively fixed with a first push plate (23) and a second push plate (24), and the top of the second sliding tube (26) is fixed with a third push plate (20). The third push plate (20) is located between the first push plate (23) and the second push plate (24). The diameter of the first push plate (23), the second push plate (24) and the third push plate (20) is all greater than 1 / 2 of the distance between the axis of the first sliding tube (25) and the axis of the second sliding tube (26).

8. The soil conditioner test chamber according to claim 7, characterized in that, When the second push plate (24) abuts against the top of the collection bottle (15): The first sliding tube (25) is inserted below the surface of the solvent, the bottom of the first push plate (23) abuts against the top of the third push plate (20), the second sliding tube (26) is inserted into the collection bottle (15) and its end is above the surface of the solvent, the distance between the end face of the first sliding tube (25) below the liquid surface and the end face of the second sliding tube (26) above the liquid surface is h, and the distance between the second push plate (24) and the first push plate (23) is less than h.

9. The soil conditioner test chamber according to claim 1, characterized in that, The bottom of the test chamber (3) is provided with a weighing module (5), the sample basin (7) is placed on the test end of the weighing module (5), and the top of the test chamber (3) is equipped with a water supply nozzle connected to a water pump. The water pump is connected to the weighing module.

10. The soil conditioner test chamber according to claim 1, characterized in that, Each of the test chambers (3) is also provided with an environmental control component; the middle of the chamber body (1) is provided with polygonal heat dissipation holes with the same number of side walls as the number of test columns (2), the side of one test column (2) facing away from the opening and closing door (4) is the side wall of the heat dissipation hole, the electronic components in the environmental control component are all installed on the side wall of the heat dissipation hole, the bottom of the chamber body (1) is fixedly connected to a support frame (8), and the inside of the support frame (8) is provided with a cooling fan aligned with the heat dissipation hole.

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