CN221037543U - Automatic cleaning device for mass flowmeter - Google Patents
Automatic cleaning device for mass flowmeter Download PDFInfo
- Publication number
- CN221037543U CN221037543U CN202322799680.5U CN202322799680U CN221037543U CN 221037543 U CN221037543 U CN 221037543U CN 202322799680 U CN202322799680 U CN 202322799680U CN 221037543 U CN221037543 U CN 221037543U
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- mass flowmeter
- cleaning
- bottom plate
- diaphragm pump
- trolley
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- 238000004140 cleaning Methods 0.000 title claims abstract description 85
- 229910001220 stainless steel Inorganic materials 0.000 claims description 41
- 239000010935 stainless steel Substances 0.000 claims description 41
- 238000007599 discharging Methods 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 9
- 239000012459 cleaning agent Substances 0.000 description 7
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- -1 electric power Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Cleaning In General (AREA)
Abstract
The utility model discloses an automatic cleaning device for a mass flowmeter, and relates to the technical field of mass flowmeters. The device comprises a cleaning unit and a mass flowmeter unit, wherein the cleaning unit comprises a cleaning assembly and a trolley assembly, the trolley assembly comprises a trolley bottom plate, the bottom of the trolley bottom plate is provided with casters, the cleaning assembly is arranged on one side, opposite to the casters, of the trolley bottom plate, the cleaning assembly comprises a cleaning tank, a pneumatic diaphragm pump, a return hose and a discharge hose, a return interface is formed in the side wall of the cleaning tank, one end of the return hose is connected to the return interface, the other end of the return hose is connected to the mass flowmeter unit, the cleaning tank is provided with a discharge hole towards one side of the trolley bottom plate, one end of the discharge hose is connected to the discharge hole, the other end of the discharge hose is connected to the inlet end of the pneumatic diaphragm pump, the outlet end of the pneumatic diaphragm pump is connected with a secondary discharge pipe, and the other end of the secondary discharge pipe is connected to the mass flowmeter unit. The utility model has the advantages that the cleaning unit can be quickly connected to the mass flowmeter unit and can automatically clean the mass flowmeter unit, and the cleaning device is quick and high in efficiency.
Description
Technical Field
The utility model relates to the technical field of mass flow meters, in particular to an automatic cleaning device for a mass flow meter.
Background
The mass flowmeter is widely applied to various industrial processes and is used for measuring the mass flow of liquid flowing through a pipeline. The mass flowmeter is widely applied to the liquid production, processing and conveying processes in the industries of chemical industry, petroleum, electric power, medicine and the like, and the importance of the mass flowmeter is self-evident. A pipeline type liquid mass flow meter is a meter that realizes liquid mass flow measurement by installing a flow meter in a pipeline. The method has the characteristics of high measurement accuracy, good corrosion resistance, long service life, convenient maintenance, high stability and the like, so that the method is widely applied to industries such as petroleum, chemical industry, pharmacy, food and the like.
However, in the use process, if slurry in the mass flowmeter remains, piles up and solidifies for a long time, the measurement precision and accuracy of the slurry can be affected without cleaning, and the existing cleaning mode is mostly to manually disassemble and clean at regular intervals, so that the time and the labor are wasted, the effect is poor, and the damage to the flowmeter is easy to cause; the operator manually uses NMP cleaning agent to carry out cleaning operation, has increased the possibility that cleaning agent and human contact, has had the risk of amazing respiratory tract, eyes, damage skin.
In view of the above, the present utility model aims to provide a new technical solution to solve the existing technical problems.
Disclosure of utility model
In order to overcome the defects in the prior art, the utility model provides the automatic cleaning device for the mass flowmeter, which solves the problems of time and labor waste and low efficiency in cleaning the mass flowmeter.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a mass flowmeter self-cleaning device, includes cleaning unit and mass flowmeter unit, cleaning unit is including wasing subassembly and dolly subassembly, dolly subassembly includes the dolly bottom plate that the bottom is provided with the truckle, wasing the subassembly and setting up in the one side of dolly bottom plate back to the truckle, wasing the subassembly and including wasing jar, pneumatic diaphragm pump, return hose and ejection of compact hose, the return interface has been seted up to the jar lateral wall, the one end of return hose is connected to the return interface, the other end of return hose is connected to mass flowmeter unit, the discharge gate has been seted up towards dolly bottom plate one side to the jar, the one end of ejection of compact hose is connected to the discharge gate, the other end of ejection of compact hose is connected to the entrance point of pneumatic diaphragm pump, the exit end of pneumatic diaphragm pump is connected with the secondary discharging pipe, the one end that pneumatic diaphragm pump was kept away from to the secondary discharging pipe is connected to mass flowmeter unit.
In the above structure, the mass flowmeter unit includes backup pad, mass flowmeter and stainless steel straight tube, stand in the backup pad is equipped with the support, the stainless steel straight tube has two, two parallel arrangement about the stainless steel straight tube is on the support, the one end of stainless steel straight tube is connected with the elbow, the one end that the stainless steel straight tube was kept away from to the elbow is connected to the one end of mass flowmeter, another stainless steel straight tube is last the elbow is connected to the other end of mass flowmeter.
In the structure, the pipeline supporting piece is fixedly arranged on the bracket, and the stainless steel straight pipe is fixedly arranged on the bracket through the pipeline supporting piece.
In the structure, one side of the return hose away from the cleaning tank is provided with a fast-assembling three-way ball valve, one end of the secondary discharging pipe away from the pneumatic diaphragm pump is also provided with a fast-assembling three-way ball valve, one interface of the fast-assembling three-way fast-assembling ball valve can be connected to a stainless steel straight pipe, and the other interface of the fast-assembling three-way ball valve can be connected to one end of the mass flowmeter.
In the structure, square brackets are symmetrically arranged on two opposite sides of the trolley bottom plate, screw nuts are arranged on the square brackets, and the cleaning tank is fixedly arranged on the square brackets through the screw nuts.
In the above structure, the device further comprises a pressure regulating valve for controlling the air pressure of the pneumatic diaphragm pump, the pressure regulating valve is fixedly arranged on the square bracket, the pressure regulating valve is provided with an air pipe, and the pressure regulating valve is connected with the pneumatic diaphragm pump through the air pipe.
In the structure, a shock pad is arranged at the bottom of the pneumatic diaphragm pump and fixedly connected to the bottom plate of the trolley.
In the above structure, the casters comprise two directional casters and two universal casters, wherein the two directional casters are symmetrically arranged at one end of the trolley bottom plate, and the two universal casters are symmetrically arranged at one end of the trolley bottom plate far away from the directional casters.
In the above structure, the foot brake is arranged on each of the two universal casters.
In the structure, a trolley handrail is arranged at the edge of one side of the trolley bottom plate, which is close to the universal casters.
The beneficial effects of the utility model are as follows:
(1) Through setting up fast-assembling tee bend ball valve intercommunication cleaning element and mass flowmeter, realize the self-cleaning to mass flowmeter, cleaning efficiency is high, and the installation is simple.
(2) The cleaning assembly is arranged on the trolley assembly, and the cleaning mass flow meter is required to be cleaned, so that the cleaning assembly can be quickly moved to a corresponding position, and time and labor are saved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the overall cleaning unit of the present utility model;
FIG. 2 is a schematic structural view of a mass flow meter unit of the present utility model;
FIG. 3 is a schematic diagram of the connection structure of the cleaning unit and the mass flowmeter according to the present utility model.
Reference numerals:
1. Cleaning the assembly; 11. a cleaning tank; 111. a tank body; 1111. a feed back interface; 1112. a discharge port; 112. a cover body; 12. a pneumatic diaphragm pump; 121. a shock pad; 13. a return hose; 14. a discharge hose; 15. a secondary discharging pipe;
2. A trolley assembly; 21. a trolley bottom plate; 22. a directional caster; 23. universal castor; 24. a square bracket; 25. trolley armrests;
3. A mass flowmeter;
4. A support plate; 41. a bracket; 42. a pipe support;
5. a stainless steel straight tube; 51. an elbow;
6. quick-assembling three-way ball valve;
7. and a pressure regulating valve.
Detailed Description
The utility model will be further described with reference to fig. 1-3.
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1 to 3, the mass flowmeter 3 automatic cleaning assembly 1 includes a cleaning unit for cleaning the mass flowmeter unit to reduce the phenomenon that slurry remains, piles up, etc. in the mass flowmeter unit to affect the measurement accuracy and precision thereof, and a mass flowmeter unit. The cleaning unit comprises a cleaning assembly 1 and a trolley assembly 2, wherein the cleaning assembly 1 is arranged on the trolley assembly 2, and the trolley assembly 2 is arranged to easily realize the movement of the cleaning assembly 1, so that the operation difficulty is reduced. The trolley assembly 2 comprises a trolley bottom plate 21, casters are arranged at the bottom of the trolley bottom plate 21 and comprise two directional casters 22 and two universal casters 23, the two directional casters 22 are symmetrically and fixedly arranged at one end of the trolley bottom plate 21, the two universal casters 23 are symmetrically and fixedly arranged at one end of the trolley bottom plate 21 far away from the directional casters 22, and foot brakes are arranged on the two universal casters 23. The trolley handrail 25 is fixedly arranged on one side edge of the trolley bottom plate 21, which is close to the universal casters 23, the trolley handrail 25 is arranged to facilitate moving the cleaning unit, when the cleaning trolley is used, an operator only needs to push the cleaning trolley to the side of the mass flowmeter unit needing cleaning, the cleaning unit is connected with the mass flowmeter unit, the cleaning agent is added to clean the mass flowmeter unit, the operation difficulty is reduced, time and labor are saved, and the possibility that the cleaning agent damages the operator is reduced.
Referring to fig. 1 to 3, the cleaning assembly 1 includes a cleaning tank 11, a pneumatic diaphragm pump 12, a return hose 13 and a discharge hose 14, the cleaning tank 11 includes a tank 111 and a cover 112, and the cover 112 is covered on the top of the tank 111 to close the tank 111. The cleaning tank 11 is arranged on one side of the trolley bottom plate 21, which is opposite to the caster, and specifically, square brackets 24 are symmetrically arranged on two opposite sides of the trolley bottom plate 21, the cleaning tank 11 is arranged between the two square brackets 24, the bottom of the cleaning tank 11 is at a certain distance from the trolley bottom plate 21, screw nuts are arranged on the square brackets 24, and the tank 111 is fixedly connected with the square brackets 24 through the screw nuts. The tank 111 has a side wall provided with a return port 1111 and a reserved port, the reserved port is normally plugged by a blind plate for standby, one section of a return hose 13 is connected to the return port 1111, and the other end of the return hose 13 is connected to the mass flowmeter unit. A discharge hole 1112 is formed in the bottom of one side, facing the trolley bottom plate 21, of the tank 111, one end of a discharge hose 14 is connected to the discharge hole 1112, the other end of the discharge hose 14 is connected to the inlet end of the pneumatic diaphragm pump 12, the outlet end of the pneumatic diaphragm pump 12 is fixedly connected with a secondary discharge pipe 15, and one end, far away from the pneumatic diaphragm pump 12, of the secondary discharge pipe 15 is connected to the mass flowmeter unit. The pneumatic diaphragm pump 12 is fixedly arranged on the trolley bottom plate 21, and a shock pad 121 is arranged at the bottom of the pneumatic diaphragm pump 12, and the shock pad 121 is fixedly connected to the trolley bottom plate 21.
Referring to fig. 1, the automatic cleaning assembly 1 of the mass flowmeter 3 further comprises a pressure regulating valve 7, wherein the pressure regulating valve 7 is used for controlling the air pressure of the pneumatic diaphragm pump 12 so as to facilitate the cleaning work. Specifically, the pressure regulating valve 7 is fixedly arranged at one side of the square bracket 24, an air pipe (not shown in the figure) is fixedly arranged at the output end of the pressure regulating valve 7, and the pressure regulating valve 7 is connected with the pneumatic pump through the air pipe.
Referring to fig. 2, the mass flowmeter unit includes a mass flowmeter 3, a support plate 4 and a stainless steel straight pipe 5, where the stainless steel straight pipe 5 has two supports 41 parallel to each other and arranged on the support plate 4, and a pipe support 42 is fixedly arranged on the supports 41, the two stainless steel straight pipes 5 are arranged up and down in parallel, and the stainless steel straight pipe 5 passes through an inner hole of the pipe support 42 and is fixedly arranged on the supports 41, and it is noted that the pipe support 42 uses a split bayonet structure to facilitate the installation and fixation of the stainless steel straight pipe 5, and interfaces at two ends of the stainless steel straight pipe 5 are in fast-assembling fast-disk form to facilitate the fast connection with other joints. One end of the stainless steel straight pipe 5 is connected with an elbow 51, one end of the elbow 51 far away from the stainless steel straight pipe 5 is connected to an outlet of one end of the mass flowmeter 3, and an outlet of the other end of the mass flowmeter 3 is connected to the other stainless steel straight pipe 5 through the elbow 51, so that a complete loop is formed.
Referring to fig. 1 to 3, a quick-mounting three-way ball valve 6 is connected to one side of the return hose 13 away from the cleaning tank 11, and a quick-mounting three-way ball valve 6 is also connected to one end of the secondary discharging pipe 15 away from the pneumatic diaphragm pump 12. When the cleaning unit is required to be connected with the mass flowmeter unit, firstly, the elbows 51 at the outlets of the two ends of the mass flowmeter 3 are removed, the quick-mounting three-way ball valve 6 on the return hose 13 and the secondary discharging hose 14 replace the two elbows 51 to be connected with the mass flowmeter 3 respectively, specifically, one of the two remaining joints of the quick-mounting three-way ball valve 6 on the return hose 13 is connected to the stainless steel straight pipe 5, the other joint is connected to the outlet of one end of the mass flowmeter 3, and if the valves of the quick-mounting three-way ball valve 6 are all kept in an open state, liquid can be transmitted between the return hose 13 and the stainless steel straight pipe 5, between the stainless steel straight pipe 5 and the mass flowmeter 3 and between the return hose 13 and the mass flowmeter 3; similarly, the fast-assembling three-way ball valve 6 on the secondary discharging hose 14 is also respectively connected to the other stainless steel straight pipe 5 and the outlet at the other end of the mass flowmeter 3. Thus, the cleaning unit and the mass flow meter unit form a loop. The whole device has two different use modes of a production mode and a cleaning mode by controlling different states of the valve of the fast-assembling three-way ball valve 6.
In the production mode, the valve of the fast-assembled three-way ball valve 6 is controlled, so that the joint of the secondary discharging pipe 15 and the mass flowmeter 3 is in a closed state, the joint of the secondary discharging pipe 15 and the stainless steel straight pipe 5 is in a closed state, and the joint of the stainless steel straight pipe 5 and the mass flowmeter 3 is in a communicating state, namely, liquid can be transmitted between the stainless steel straight pipe 5 and the mass flowmeter 3 and cannot be transmitted between the secondary discharging pipe 15 and the mass flowmeter 3 and between the secondary discharging pipe 15 and the stainless steel straight pipe 5; similarly, the valve of the fast-assembling three-way ball valve 6 at the other end of the mass flowmeter 3 is controlled, so that liquid is transmitted between the mass flowmeter 3 and the stainless steel straight pipe 5 and cannot be transmitted between the return hose 13 and the mass flowmeter 3 and between the return hose 13 and the stainless steel straight pipe 5; at this time, the mass flowmeter unit resumes the normal operation mode.
In a cleaning mode, controlling a valve of the fast-assembled three-way ball valve 6 to enable the connection part of the secondary discharging pipe 15 and the mass flowmeter 3 to be in a communication state, enabling the connection part of the secondary discharging pipe 15 and the stainless steel straight pipe 5 to be in a closed state, and enabling the connection part of the stainless steel straight pipe 5 and the mass flowmeter 3 to be in a closed state, namely enabling liquid to be transmitted between the secondary discharging pipe 15 and the mass flowmeter 3 and not to be transmitted between the stainless steel straight pipe 5 and the mass flowmeter 3 and between the secondary discharging pipe 15 and the stainless steel straight pipe 5; similarly, the valve of the fast-assembling three-way ball valve 6 at the other end of the mass flowmeter 3 is controlled, so that liquid is transmitted between the return hose 13 and the mass flowmeter 3 and cannot be transmitted between the return hose 13 and the stainless steel straight pipe 5 or between the stainless steel straight pipe 5 and the mass flowmeter 3; the cleaning unit may then clean the mass flow meter 3. When the mass flowmeter 3 needs to be cleaned, the state of the valve corresponding to the fast-assembling three-way ball valve 6 is controlled according to a cleaning mode, then cleaning agent is added into the tank 111, the cleaning unit is started to clean the mass flowmeter 3, the cleaning agent circulates reciprocally, and automatic cleaning of the mass flowmeter 3 is achieved. The complete cycle cleaning loop is: cleaning agent, tank 111, discharging pipe, pneumatic diaphragm pump 12, secondary discharging pipe 15, quick-assembled three-way ball valve 6, mass flowmeter 3, another quick-assembled three-way ball valve 6, return hose 13, return interface 1111 and tank 111.
Referring to fig. 3, in this embodiment, two sets of cleaning assemblies 1 with the same structure and function are provided on the trolley assembly 2, and the two sets of cleaning assemblies 1 are adjacently provided, that is, two cleaning tanks 11 in the two sets of cleaning assemblies 1 are adjacently provided front and back, and the two sets of cleaning assemblies 1 are provided, so that the two mass flow meters 3 can be cleaned simultaneously, which is beneficial to improving the cleaning efficiency.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. The utility model provides a mass flowmeter self-cleaning device which characterized in that: including cleaning unit and mass flowmeter unit, cleaning unit is including wasing subassembly and dolly subassembly, dolly subassembly includes that the bottom is provided with the dolly bottom plate of truckle, cleaning unit sets up in one side of dolly bottom plate dorsad, cleaning unit is including wasing jar, pneumatic diaphragm pump, return hose and ejection of compact hose, the return interface has been seted up to wasing jar lateral wall, the one end of return hose is connected to the return interface, the other end of return hose is connected to mass flowmeter unit, the discharge gate has been seted up towards dolly bottom plate one side to wasing jar, the one end of ejection of compact hose is connected to the discharge gate, the other end of ejection of compact hose is connected to the entrance point of pneumatic diaphragm pump, the exit end of pneumatic diaphragm pump is connected with the secondary discharging pipe, the one end that pneumatic diaphragm pump was kept away from to the secondary discharging pipe is connected to mass flowmeter unit.
2. The automatic mass flowmeter cleaning device of claim 1, wherein: the mass flowmeter unit comprises a support plate, a mass flowmeter and stainless steel straight pipes, wherein two supports are arranged on the support plate, the two stainless steel straight pipes are arranged on the support in an up-down parallel mode, one end of each stainless steel straight pipe is connected with an elbow, one end of each elbow, far away from each stainless steel straight pipe, is connected to one end of the mass flowmeter, and the other end of each elbow, which is arranged on the other stainless steel straight pipe, is connected to the other end of the mass flowmeter.
3. A mass flow meter automatic cleaning device as defined in claim 2, wherein: the stainless steel straight pipe is fixedly arranged on the bracket through the pipeline supporting piece.
4. A mass flow meter automatic cleaning device as defined in claim 2, wherein: one side that the feed back hose kept away from the washpot is provided with fast-assembling tee bend ball valve, the one end that pneumatic diaphragm pump was kept away from to the secondary discharging pipe also is provided with fast-assembling tee bend ball valve, an interface of fast-assembling tee bend ball valve can be connected to the stainless steel straight tube, another interface of fast-assembling tee bend ball valve can be connected to mass flowmeter's one end.
5. The automatic mass flowmeter cleaning device of claim 1, wherein: the trolley is characterized in that square brackets are symmetrically arranged on two opposite sides of the trolley bottom plate, screw nuts are arranged on the square brackets, and the cleaning tank is fixedly arranged on the square brackets through the screw nuts.
6. The automatic mass flow meter cleaning device of claim 5, wherein: the pneumatic diaphragm pump is characterized by further comprising a pressure regulating valve for controlling the air pressure of the pneumatic diaphragm pump, the pressure regulating valve is fixedly arranged on the square bracket and is provided with an air pipe, and the pressure regulating valve is connected with the pneumatic diaphragm pump through the air pipe.
7. The automatic mass flowmeter cleaning device of claim 1, wherein: the bottom of the pneumatic diaphragm pump is provided with a shock pad which is fixedly connected with the bottom plate of the trolley.
8. The automatic mass flowmeter cleaning device of claim 1, wherein: the casters comprise two directional casters and two universal casters, wherein the two directional casters are symmetrically arranged at one end of the trolley bottom plate, and the two universal casters are symmetrically arranged at one end of the trolley bottom plate far away from the directional casters.
9. The automatic mass flow meter cleaning device of claim 8, wherein: foot brakes are arranged on the two universal casters.
10. The automatic mass flow meter cleaning device of claim 8, wherein: and a trolley handrail is arranged at the edge of one side of the trolley bottom plate, which is close to the universal casters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799680.5U CN221037543U (en) | 2023-10-18 | 2023-10-18 | Automatic cleaning device for mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799680.5U CN221037543U (en) | 2023-10-18 | 2023-10-18 | Automatic cleaning device for mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221037543U true CN221037543U (en) | 2024-05-28 |
Family
ID=91189127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322799680.5U Active CN221037543U (en) | 2023-10-18 | 2023-10-18 | Automatic cleaning device for mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221037543U (en) |
-
2023
- 2023-10-18 CN CN202322799680.5U patent/CN221037543U/en active Active
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