Micro-nano bubble generating device for emergency treatment

Abstract

The utility model provides a micro-nano bubble generating device for emergency treatment, which comprises a support, a bottom plate, a support plate and a top plate, the bottom plate, the support plate and the top plate are mounted on the support, the top plate is positioned at the top of the support, the bottom plate is positioned at the bottom of the support, and the support plate is positioned between the bottom plate and the top plate; a gas source mechanism is mounted on the supporting plate and the bottom plate, and a bubble generating mechanism used for mixing gas and liquid is further mounted on the bottom plate; and a moving assembly is mounted at the bottom of the bracket. Through the arrangement of the moving assembly, the micro-nano bubble generating device is convenient to move, and when an emergency occurs and the micro-nano bubble generating device needs to be used, the micro-nano bubble generating device can rapidly respond and rapidly move to a designated position, micro-nano bubbles needed for treating the emergency are conveyed into a water body, the emergency is treated, pollution diffusion is avoided, and the water quality is improved. Therefore, the emergency situation is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bubble generating devices, in particular to a micro-nano bubble generating device for emergency treatment. Background Technique

[0002] A micro-nano bubble generating device is a bubble generating device that can generate bubbles with diameters ranging from about several micrometers to several hundred nanometers. Micro-nano bubbles have the characteristics of large specific surface area, long residence time, self-pressurizing dissolution, generation of hydroxyl radicals, and high mass transfer efficiency, and are widely used in environmental pollution control fields such as water body aeration, flotation process, enhanced ozonation, and enhanced biological activity.

[0003] Existing micro-nano bubble generating devices are relatively large in volume, and when it is necessary to generate micro-nano bubbles of gas sources other than air, an external gas source needs to be connected, and the gas cylinders for storing gas occupy a large area. Therefore, in sudden environmental pollution incidents (chemical leakage, industrial wastewater discharge), emergency ecological restoration projects (injecting bubble water into the water body by using a bubble generating device during emergency use), hypoxia in emergency aquaculture, and various temporary water treatments, large micro-nano bubble generating devices are required. However, large micro-nano bubble generating devices are inconvenient to carry, while small devices have a small treatment capacity and require the transportation of gas storage tanks, which is very troublesome, affecting the response speed and easily causing pollution diffusion.

[0004] Therefore, providing a micro-nano bubble generating device that is easy to move, can quickly respond to various emergencies, be moved to the emergency site, and can meet the on-site emergency treatment volume is a technical problem that urgently needs to be solved now. Content of the Utility Model

[0005] The purpose of the utility model is to provide a micro-nano bubble generating device for emergency treatment, so as to solve the problem that the existing micro-nano bubble generating device in the background technique cannot quickly respond to various emergencies.

[0006] To achieve the above purpose, the utility model provides a micro-nano bubble generating device for emergency treatment, which includes a bracket, a bottom plate, a support plate, and a top plate installed on the bracket. The top plate is located at the top of the bracket, the bottom plate is located at the bottom of the bracket, and the support plate is located between the bottom plate and the top plate; a gas source mechanism is installed on the support plate and the bottom plate, and a bubble generating mechanism for mixing gas and liquid is also installed on the bottom plate; a moving component is installed at the bottom of the bracket.

[0007] Optionally, a partition plate is further installed on the bracket, and the partition plate is located between the top plate and the support plate.

[0008] Optionally, the gas source mechanism includes a gas generating device installed on the support plate and a gas storage component installed on the bottom plate;

[0009] Optionally, a controller is further installed on the support plate, and the gas generating device, the gas storage assembly, and the bubble generating mechanism are all connected to the controller.

[0010] Optionally, the gas storage assembly includes a gas storage tank installed on the bottom plate, a pressure increasing valve provided at the air inlet of the gas storage tank, and an air outlet pipe provided at the air outlet of the gas storage tank; the pressure increasing valve is connected to the air outlet of the gas generating device through a pipeline; the air outlet pipe is connected to the bubble generating mechanism, and a gas distribution row is installed at the end of the air outlet pipe.

[0011] Optionally, a safety pipe is further provided on the gas storage tank, a safety valve is installed at the end of the safety pipe, a first pressure gauge is further provided on the safety pipe, and a first exhaust valve is installed at the end of the gas storage tank.

[0012] Optionally, the bubble generating mechanism includes a gas-liquid mixing pump installed on the bottom plate, a water inlet pipe and an air inlet pipe installed on the gas-liquid mixing pump, a bubble water pipe installed on the gas-liquid mixing pump, and a nozzle installed at the end of the bubble water pipe; the air inlet pipe is connected to the gas distribution row.

[0013] Optionally, an air inlet pipe directly communicating with the air is further provided on the gas distribution row; a second pressure gauge, a gas dissolving chamber, and a water valve are sequentially provided on the bubble water pipe along the flowing direction of the bubble water.

[0014] Optionally, a second exhaust valve is installed on the gas dissolving chamber.

[0015] Optionally, the moving assembly includes a mounting seat installed at the bottom of the bracket and universal wheels installed at the bottom of the mounting seat.

[0016] Optionally, the moving assembly further includes an anti-slip structure installed on the bracket.

[0017] Optionally, the anti-slip structure includes a lifting rod movably installed on the bracket, a limiting plate installed at the top of the lifting rod, an adjusting nut movably installed on the lifting rod and located at the bottom of the bracket, a square column installed at the bottom of the lifting rod, two symmetrically arranged L-shaped mounting grooves on the square column, a cover provided on the square column and located at the notch of the L-shaped mounting groove, and an anti-slip member detachably installed on the square column.

[0018] Compared with the prior art, the present utility model provides a micro-nano bubble generating device for emergency treatment, which has the following beneficial effects:

[0019] The micro-nano bubble generating device for emergency treatment is convenient to move through the setting of the moving component. When it is necessary to use the micro-nano bubble generating device in case of an emergency, it can respond quickly, move quickly to the designated position, transport the micro-nano bubbles required for dealing with the emergency into the water body, handle the emergency, avoid the spread of pollution, and thus relieve the emergency.

[0020] In addition, through the setting of the gas source mechanism, the specified gas can be generated, and there is no need to frequently replace the gas storage cylinder, thereby reducing the labor intensity of workers, and ensuring that the micro-nano bubble generating device can operate continuously for a long time, increasing the generation amount of bubble water by the micro-nano bubble generating device under the same time and the same specifications, so as to meet the processing capacity at the emergency site. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0022] Figure 2 It is a schematic diagram of the overall structure of the present utility model from another perspective.

[0023] Figure 3 It is a schematic diagram of the structure of the gas storage component of the present utility model.

[0024] Figure 4 It is a schematic diagram of the structure of the gas storage component of the present utility model from another perspective.

[0025] Figure 5 It is a schematic diagram of the structure of the bubble generating mechanism of the present utility model.

[0026] Figure 6 It is a schematic diagram of the structure of the gas storage component of the present utility model from another perspective.

[0027] Figure 7 It is a schematic diagram of the structure of the bracket of the present utility model.

[0028] Figure 8 It is a schematic diagram of the structure of the moving component of the present utility model.

[0029] Figure 9 It is a schematic diagram of the structure of the moving component in Embodiment 2 of the present utility model.

[0030] Figure 10 It is a schematic diagram of the anti-slip structure in Embodiment 2 of the present utility model.

[0031] Figure 11 It is a schematic illustration of the square column in Embodiment 2 of the present utility model.

[0032] Figure 12 It is a schematic diagram of the structure of the anti-slip member in Embodiment 2 of the present utility model.

[0033] Figure 13 It is a schematic structural diagram of the anti-slip member in the form of a soil-breaking cone in Example 2 of the utility model.

[0034] Markings in the figure: 1. Bracket; 11. Bottom plate; 12. Support plate; 13. Top plate; 14. Partition plate; 2. Gas source mechanism; 21. Gas generating device; 22. Gas storage assembly; 221. Gas storage tank; 222. Boosting valve; 223. Air outlet pipe; 224. Air distribution row; 225. Safety pipe; 226. Safety valve; 227. First pressure gauge; 228. First exhaust valve; 229. Air intake pipe; 3. Bubble generating mechanism; 31. Gas-liquid mixing pump ; 32. Water inlet pipe; 33. Air inlet pipe; 34. Bubble water pipe; 341. Second pressure gauge; 342. Dissolution chamber; 343. Water valve; 344. Second exhaust valve; 35. Nozzle; 4. Moving assembly; 41. Mounting seat; 42. Universal wheel; 43. Anti-slip structure; 431. Lifting rod; 432. Limiting plate; 433. Adjusting nut; 434. Square column; 435. L-shaped mounting groove; 436. Cover; 437. Anti-slip part; 5. Controller. DETAILED DESCRIPTION

[0035] The following is a detailed description in conjunction with the accompanying drawings and specific implementations. In the following description, many specific details are set forth to facilitate a full understanding of the present utility. However, the present utility can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present utility, so the present utility is not limited by the specific embodiments disclosed below.

[0036] The micro-nano bubble generating device for emergency treatment of the present application can be applied to various occasions where a micro-nano bubble generating device is required for emergency treatment, and of course can also be used in other similar application scenarios. The micro-nano bubble generating device for emergency treatment is described in detail below.

[0037] Example 1

[0038] See attached Figure 1 — Figure 8 As shown, a structural schematic diagram of a preferred embodiment of a micro-nano bubble generating device for emergency treatment of the present application is shown. The micro-nano bubble generating device for emergency treatment comprises a bracket 1, a bottom plate 11, a support plate 12 and a top plate 13 installed on the bracket 1, wherein the top plate 13 is located at the top of the bracket, the bottom plate 11 is located at the bottom of the bracket 1, and the support plate 12 is located between the bottom plate 11 and the top plate 13; wherein a gas source mechanism 2 is installed on the support plate 12 and the bottom plate 11, and a bubble generating mechanism 3 for mixing gas and liquid is also installed on the bottom plate 11; and a moving component 4 is installed at the bottom of the bracket 1.

[0039] The utility model provides an installation position for the air source mechanism 2 and the bubble generating mechanism 3 through the settings of the bottom plate 11 and the support plate 12; through the setting of the air source mechanism 2, the micro-nano bubble generating device of the present application can generate corresponding gases by itself, without the need to frequently replace the gas storage tank, thereby ensuring the stability of micro-nano gas-liquid mixing, increasing the generation amount of micro-nano bubble water within a certain period of time, and reducing the labor intensity of workers; through the setting of the bubble generating mechanism 3, it is used to mix gas and liquid to generate bubble water and discharge the bubble water; through the setting of the moving component 4, it is convenient for workers to move the micro-nano bubble generating device, which can be directly pushed on a flat road surface, so that in case of an emergency, the micro-nano bubble generating device can respond quickly, and workers can quickly move the micro-nano bubble generating device to a designated position, shortening the time required for the micro-nano bubble generating device to move to the designated position, thereby reducing the scope of pollution diffusion.

[0040] Refer to the attached Figure 1 and Figure 2 As shown in the figure, in the utility model, a partition plate 14 is further installed on the bracket 1, and the partition plate 14 is located between the top plate 13 and the support plate 12; the air source mechanism 2 includes a gas generating device 21 installed on the support plate 12 and a gas storage assembly 22 installed on the bottom plate 11; a controller 5 is further installed on the support plate 12, and the gas generating device 21, the gas storage assembly 22 and the bubble generating mechanism 3 are all connected to the controller 5.

[0041] Through the arrangement of the partition plate 14, the air source mechanism 2 and the controller 5 are separated, preventing the heat generated during the operation of the air source mechanism 2 from affecting the controller 5, thereby protecting the controller 5. Through the arrangement of the gas generating device 21, it is used to generate corresponding gases to ensure gas replenishment. It should be particularly noted that the gas generating device 21 can be an oxygen generating device or an ozone generating device, and different gas generating devices can be installed according to actual needs to generate different gases for use in different emergency situations. Specifically, when there is an oxygen deficiency in aquaculture, an oxygen generating device can be used to replenish oxygen, and each industry only needs to use the corresponding gas generating device. Through the arrangement of the gas storage component 22, the gas generated by the gas generating device 21 can be temporarily stored to ensure that it can be directly used during emergency use without the need for temporary gas production, and ensure that the gas generating device 21 does not need to work continuously for a long time, enabling the gas generating device 21 to stop and cool. Since the gas generating device 21 in this application is installed on the bracket 1 in a relatively enclosed environment, the ambient temperature will rise during use. Therefore, the stop of the gas generating device 21 can effectively control the rise of the ambient temperature, avoid the gas generating device 21 being in a high-temperature environment, ensure the safety of the gas generating device 21 during operation, and the stability of the equipment operation, and ensure the safety of the micro-nano generating device. It should be particularly noted that the controller 5 can be a PLC controller or a single-chip microcomputer.

[0042] Refer to the appendix Figure 2 — Figure 4 As shown, in the present utility model, the gas storage component 22 includes a gas storage tank 221 installed on the bottom plate 11, a booster valve 222 provided at the air inlet of the gas storage tank 221, and an air outlet pipe 223 provided at the air outlet of the gas storage tank 221; the booster valve 222 is connected to the air outlet of the gas generating device 21 through a pipeline; the air outlet pipe 223 is connected to the bubble generating mechanism 3, and a gas distribution row 224 is installed at the end of the air outlet pipe 223. It should be particularly noted that a solenoid valve connected to the controller 5 is provided on the air outlet pipe 223.

[0043] The present utility model, through the provision of the gas storage tank 221, is used for temporarily storing the corresponding gas generated by the gas generating device 21 to ensure that there is sufficient gas when gas-liquid mixing is carried out; through the provision of the pressure boosting valve 222, it is used for boosting the gas generated by the gas generating device 21 to ensure that the gas generated by the gas generating device 21 can enter the gas storage tank 221 and to ensure that the gas in the gas storage tank 221 will not flow out from the air inlet; through the provision of the gas distribution row 224, both air and the gas generated by the gas generating device 21 can enter the gas-liquid mixing pump 31 for mixing to generate micro-nano bubble water, that is, the gas-liquid mixing pump can mix water and air, or, air and the gas generated by the gas-liquid mixing pump 31 to form micro-nano bubble water for discharge, thereby providing more choices for use and enabling the user to adjust according to the actual situation.

[0044] Refer to the attached Figure 3 and Figure 4 As shown, in the present utility model, a safety pipe 225 is further provided on the gas storage tank 221. A safety valve 226 is installed at the end of the safety pipe 225. A first pressure gauge 227 is further provided on the safety pipe 225. A first exhaust valve 228 is installed at the end of the gas storage tank 221.

[0045] The present utility model, through the provision of the safety pipe 225 and in cooperation with the provision of the safety valve 226, ensures the safety of the gas storage tank 221, prevents the air pressure in the gas storage tank 221 from being too high, thereby preventing the gas storage tank 221 from bursting, being damaged, or even exploding, providing protection for the safety of the equipment; through the provision of the first pressure gauge 227, the pressure in the gas storage tank 221 can be monitored in real time. It should be noted in particular that this first pressure gauge 227 is an electric contact pressure gauge and can be connected to the controller 5, so that the gas generating device 21 can start or stop working according to the air pressure in the gas storage tank 221; through the provision of the first exhaust valve 228, the gas stored in the gas storage tank 221 for a long time or not used up can be discharged to ensure the purity of the gas in the storage tank 221 during use.

[0046] Refer to the attached Figure 2 、 Figure 5 and Figure 6 As shown, in the present utility model, the bubble generating mechanism 3 includes a gas-liquid mixing pump 31 installed on the bottom plate 11, a water inlet pipe 32 and an air inlet pipe 33 installed on the gas-liquid mixing pump 31, a bubble water pipe 34 installed on the gas-liquid mixing pump 31, and a nozzle 35 installed at the end of the bubble water pipe 34; the air inlet pipe 33 is communicated with the gas distribution row 224.

[0047] The present utility model is provided with a gas-liquid mixing pump 31 for mixing gas and liquid to form bubble water; through the arrangement of a water inlet pipe 32, liquid can enter the gas-liquid mixing pump 31 for gas-liquid mixing; through the arrangement of an air inlet pipe 33, gas can enter the gas-liquid mixing pump 31 for gas-liquid mixing; through the arrangement of a bubble water pipe 34, the bubble water after mixing gas and liquid can be discharged; through the arrangement of a nozzle 35, it is used to spray out the bubble water.

[0048] Refer to the appendix Figure 5 and Figure 6 As shown, in the present utility model, an air inlet pipe 229 directly communicating with air is further provided on the gas distribution row 224; along the flowing direction of the bubble water, the bubble water pipe 34 is successively provided with a second pressure gauge 341, a gas dissolution chamber 342, and a water valve 343; among them, a second exhaust valve 344 is installed on the gas dissolution chamber 342.

[0049] Through the arrangement of the air inlet pipe 229, the present utility model is used to guide air so that air can enter the gas-liquid mixing pump 31 for gas-liquid mixing; through the arrangement of the second pressure gauge 341, the state after gas-liquid mixing of gas and liquid passing through the gas-liquid mixing pump 31 can be monitored; through the arrangement of the gas dissolution chamber 342, the excess gas after gas-liquid mixing can be discharged, while reducing the pipeline pressure and avoiding the influence of the excess gas on the subsequent spraying of the gas-liquid mixture by the nozzle 35, ensuring the stability of bubble water generation; through the arrangement of the water valve 343, the bubble water pipe 34 can be closed and opened, and the water valve 343 is also connected to the orifice device 5; through the arrangement of the second exhaust valve 344, the gas in the gas dissolution chamber 342 can be discharged.

[0050] Refer to the appendix Figure 7 and Figure 8 As shown, the moving assembly 4 is installed on the mounting seat 41 at the bottom of the bracket 1, and universal wheels 42 are installed at the bottom of the mounting seat 41. Through the arrangement of the universal wheels 42, the present utility model facilitates the handling of the micro-nano bubble generating device of the present application. When an emergency occurs and the micro-nano bubble generating device needs to be processed, the staff can respond quickly and quickly move the micro-nano bubble generating device to a designated position for processing, thereby avoiding further spread of pollution.

[0051] Refer to the appendix Figure 1 — Figure 8 As shown, the usage process of the present utility model is as follows:

[0052] In case of an emergency, the worker can quickly move the micro-nano bubble generating device to the designated position, then fix it through the braking function of the universal wheels 42. Subsequently, the controller 5 is used to select air or the gas in the gas storage tank 221. Then the device is started. When air is selected, the air enters the air distribution row 224 through the air inlet pipe 229, then passes through the gas flowmeter and enters the gas-liquid mixing pump 31. At the same time, water enters the gas-liquid mixing pump 31 through the water inlet pipe 32. The gas-liquid mixing pump 31 discharges the gas-liquid mixture after mixing air and water through the bubble water pipe 34. When the gas in the gas storage tank 221 is selected, the solenoid valve on the air outlet pipe 223 will open. Subsequently, the gas in the gas storage tank 221 flows through the flowmeter and then enters the gas-liquid mixing pump 31 to be mixed with clean water by the gas-liquid mixing pump 31, and then is discharged through the bubble water pipe 34. It should be particularly noted that a one-way valve is provided in the pipeline between the flowmeter and the inlet pipe 33 to prevent gas backflow.

[0053] Embodiment 2

[0054] Refer to the attached Figure 9 — Figure 13 As shown, the difference between this embodiment and Embodiment 1 is that the moving component 4 in this embodiment further includes an anti-slip structure 43 installed on the bracket 1. The anti-slip structure 43 includes a lifting rod 431 movably installed on the bracket 1, a limiting plate 432 installed at the top of the lifting rod 431, an adjusting nut 433 movably installed on the lifting rod 431 and located at the bottom of the bracket 1, a square column 434 installed at the bottom of the lifting rod 431, two symmetrically arranged L-shaped mounting grooves 435 on the square column 434, a cover 436 arranged on the square column 434 at the notch of the L-shaped mounting groove 435, and an anti-slip member 437 detachably installed on the square column 434.

[0055] The utility model controls the lifting and moving of the anti-slip member 437 to control whether the anti-slip member 437 contacts the ground through the setting of the lifting rod 431; limits the lifting rod 431 to prevent the lifting rod 431 from separating from the bracket 1 due to gravity and provides leverage for the worker to prevent the lifting rod 431 from rotating through the setting of the limiting plate 432; controls the lifting and moving of the anti-slip member 437 through the setting of the adjusting nut 433; provides an installation position for the anti-slip member 437 through the setting of the L-shaped mounting groove 435 so that the anti-slip member 437 can be replaced; and blocks the L-shaped mounting groove 435 through the setting of the cover 436 to prevent the anti-slip member 437 from separating from the L-shaped mounting groove during use.

[0056] It should be particularly noted that an L-shaped connecting block adapted to the L-shaped installation groove 435 is installed on the anti-slip member 437, and the anti-slip member 437 can be an anti-slip rubber block or a soil-breaking cone; specifically, when the micro-nano bubble generator is used on a solid ground such as cement or asphalt, an anti-slip rubber block can be used, and when it is used on soil, it can be replaced with a soil-breaking cone.

[0057] The above embodiments are illustrative of the present application, not restrictive of the present application. Any scheme obtained by simply transforming the present application falls within the protection scope of the present application.

Claims

1. A micro-nano bubble generating device for emergency treatment, characterized in that, It includes a bracket (1), a bottom plate (11), a support plate (12) and a top plate (13) installed on the bracket (1). The top plate (13) is located at the top of the bracket (1), the bottom plate (11) is located at the bottom of the bracket (1), and the support plate (12) is located between the bottom plate (11) and the top plate (13). An air source mechanism (2) is installed on the support plate (12) and the bottom plate (11), and a bubble generating mechanism (3) for mixing gas and liquid is also installed on the bottom plate (11). A moving component (4) is installed at the bottom of the bracket (1).

2. The micro-nano bubble generating device for emergency treatment according to claim 1, wherein A partition plate (14) is also installed on the bracket (1), and this partition plate (14) is located between the top plate (13) and the support plate (12). The air source mechanism (2) includes a gas generating device (21) installed on the support plate (12) and a gas storage assembly (22) installed on the bottom plate (11). A controller (5) is also installed on the support plate (12), and the gas generating device (21), the gas storage assembly (22) and the bubble generating mechanism (3) are all connected to the controller (5).

3. The micro-nano bubble generating device for emergency treatment according to claim 2, characterized in that, The gas storage assembly (22) includes a gas storage tank (221) installed on the bottom plate (11), a pressure increasing valve (222) arranged at the air inlet of the gas storage tank (221), and an air outlet pipe (223) arranged at the air outlet of the gas storage tank (221); the pressure increasing valve (222) is connected to the air outlet of the gas generating device (21) through a pipeline; the air outlet pipe (223) is connected to the bubble generating mechanism (3), and a gas distribution row (224) is installed at the end of the air outlet pipe (223).

4. The micro-nano bubble generating device for emergency treatment according to claim 3, wherein, A safety pipe (225) is also provided on the gas storage tank (221), a safety valve (226) is installed at the end of the safety pipe (225), a first pressure gauge (227) is also provided on the safety pipe (225), and a first exhaust valve (228) is installed at the end of the gas storage tank (221).

5. The micro-nano bubble generating device for emergency treatment according to claim 3, characterized in that, The bubble generating mechanism (3) includes a gas-liquid mixing pump (31) installed on the bottom plate (11), a water inlet pipe (32) and an air inlet pipe (33) installed on the gas-liquid mixing pump (31), a bubble water pipeline (34) installed on the gas-liquid mixing pump (31), and a spray head (35) installed at the end of the bubble water pipeline (34); the air inlet pipe (33) is connected to the gas distribution row (224).

6. The micro-nano bubble generating device for emergency treatment according to claim 5, characterized in that, An air inlet pipe (229) directly connected to the air is also provided on the gas distribution row (224). Along the flowing direction of the bubble water, a second pressure gauge (341), a gas dissolving chamber (342), and a water valve (343) are successively provided on the bubble water pipeline (34).

7. The micro-nano bubble generating device for emergency treatment according to claim 6, characterized in that, A second exhaust valve (344) is installed on the gas dissolving chamber (342).

8. The micro-nano bubble generating device for emergency treatment according to claim 1, characterized in that, The moving component (4) includes a mounting seat (41) installed at the bottom of the bracket (1), and a universal wheel (42) installed at the bottom of the mounting seat (41).

9. The micro-nano bubble generating device for emergency treatment according to claim 8, wherein The moving component (4) also includes an anti-slip structure (43) installed on the bracket (1).

10. The micro-nano bubble generating device for emergency treatment according to claim 9, characterized in that, The anti-slip structure (43) includes a lifting rod (431) movably installed on the bracket (1), a limiting plate (432) installed at the top of the lifting rod (431), an adjusting nut (433) movably installed on the lifting rod (431) and located at the bottom of the bracket (1), a square column (434) installed at the bottom of the lifting rod (431), two L-shaped mounting grooves (435) symmetrically arranged on the square column (434), a cover (436) arranged on the square column (434) and at the notch of the L-shaped mounting groove (435), and an anti-slip member (437) detachably installed on the square column (434).

Images