CN220287110U - Air storage tank of automatic water draining air compressor in winter - Google Patents
Air storage tank of automatic water draining air compressor in winter Download PDFInfo
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- CN220287110U CN220287110U CN202321500140.6U CN202321500140U CN220287110U CN 220287110 U CN220287110 U CN 220287110U CN 202321500140 U CN202321500140 U CN 202321500140U CN 220287110 U CN220287110 U CN 220287110U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 description 6
- 238000004321 preservation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an air storage tank of an automatic water draining air compressor in winter, which comprises an air storage tank main body of the air compressor and a temperature control drainage tank assembled at the bottom end of the air storage tank main body of the air compressor, wherein a temperature control drainage controller is assembled on the outer wall of the temperature control drainage tank; the bottom of the air storage tank main body of the air compressor is provided with a drain pipe, the top end of the temperature control drain box is provided with a drain outlet, and a telescopic connecting pipe is inserted in the drain outlet; a sealing cover is arranged between the telescopic connecting pipe and the drain pipe, and a drain valve is arranged on the drain pipe; the upper end of the interior of the temperature control drainage box is provided with a pressure release chamber, and the lower end of the interior of the temperature control drainage box is provided with a liquid storage tank; a flow port is arranged between the pressure release chamber and the liquid storage tank, and a flow pipe is inserted into the flow port; the air storage tank of the automatic water draining air compressor in winter solves the problem that the air compressor in northern cold areas is safe to use for a long time, greatly protects equipment and labor cost, and improves production efficiency.
Description
Technical Field
The utility model relates to the technical field of air storage tanks of air compressors, in particular to an air storage tank of an automatic water draining air compressor in winter.
Background
The air compressor is a special device widely applied to various industrial occasions. Cutting, sandblasting, inflating, painting, and the like. However, in the northeast area, there is a heating period of about six months, and in some places, frost cracks frequently occur due to unsmooth drainage of the low-temperature air storage tank, and the air compressor is generally divided into a piston type and a screw type. The air storage tank is provided with a drain valve (the water quantity of the air storage tank is determined by the humidity in the air), the specific gravity of the compressed air is light, the specific gravity of the water is high, the drain valve is generally arranged at the bottom of the tank body, and a ball valve or a gate valve is generally used for manually draining water or a drain release valve is used for releasing accumulated water;
however, as the north is long in winter and the use scene is complex, the accumulated water at the bottom is often frozen, the effective volume of the tank body is reduced due to inconvenient timely drainage to influence the gas storage function, and equipment is damaged in severe cases, so that the prior art needs to be improved.
Disclosure of Invention
The utility model aims to provide an air storage tank of an automatic water draining air compressor in winter so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the air storage tank of the automatic water draining air compressor in winter comprises an air storage tank main body of the air compressor and a temperature control drainage tank assembled at the bottom end of the air storage tank main body of the air compressor, wherein a temperature control drainage controller is assembled on the outer wall of the temperature control drainage tank;
the bottom of the air storage tank main body of the air compressor is provided with a drain pipe, the top end of the temperature control drain box is provided with a drain outlet, and a telescopic connecting pipe is inserted in the drain outlet;
a sealing cover is arranged between the telescopic connecting pipe and the drain pipe, and a drain valve is arranged on the drain pipe;
the upper end of the inside of the temperature control drainage box is provided with a pressure release chamber, and the lower end of the inside of the temperature control drainage box is provided with a liquid storage tank;
a flow port is formed between the pressure release chamber and the liquid storage tank, and a flow pipe is inserted into the flow port;
the pressure sensor is arranged in the pressure release chamber, and the electromagnetic valve is arranged on the flow pipe;
the inside of liquid storage tank is equipped with heating element, the inner wall of liquid storage tank is equipped with liquid level switch.
Preferably, the inside of reservoir still is equipped with drain pump and power module, heating element is equipped with temperature detect switch, pressure sensor, solenoid valve, liquid level switch, drain pump, heating element, temperature detect switch and power module all with control by temperature change drainage controller electric connection.
Preferably, the inner wall of the liquid storage tank is provided with a water outlet, a water drain pipe is inserted in the water outlet, and the end part of the water drain pipe is connected with the output end of the drainage pump.
Preferably, sealing ports are formed in the upper end and the lower end of the sealing cover, the end part of the telescopic connecting pipe is inserted into the lower end of the sealing port, the end part of the drain pipe is inserted into the upper end of the sealing port, an inner thread is formed in the inner wall of the sealing cover, an outer thread is formed in the outer wall of the telescopic connecting pipe, and the inner thread is matched with the outer thread.
Preferably, the outside of the drain pipe is provided with a sealing plate a and a sealing plate b in a sleeved mode, a rubber block is uniformly arranged on the side wall of the sealing plate a facing the sealing plate b, the end portion of the telescopic connecting pipe is provided with a water collecting cover, and the inner diameter of the water collecting cover is larger than the outer diameter of the drain pipe.
Preferably, telescopic struts are arranged on two sides of the top end of the temperature control drainage box, a bearing sleeve plate is arranged at the end part of the telescopic struts, and the bearing sleeve plate is sleeved outside the air storage tank main body of the air compressor.
Preferably, the inner wall of the bearing sleeve plate is provided with a rubber filling pad, and the rubber filling pad is attached to the outer wall of the air storage tank main body of the air compressor.
Preferably, the outer walls of the two sides of the bearing sleeve plate are provided with limit screw holes, the inner walls of the limit screw holes are connected with limit screws in a screwed mode, and the end portions of the limit screws are attached to the outer wall of the air storage tank main body of the air compressor.
Compared with the prior art, the utility model has the beneficial effects that: this automatic drainage air compressor machine gas holder in winter, simple structure, convenient operation sets up the control by temperature change drainage air tank through the drainage department at the air compressor machine gas holder, can control the drainage according to the pressure of drainage to solved the long-term trouble north cold region air compressor machine safe in utilization's stubborn disease, very big protection equipment and cost of labor, and set up the sealing connection head of being convenient for dismouting in the junction between them, thereby be convenient for both installation and dismantlement, thereby improved production efficiency.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is a schematic view of the inside of a temperature-controlled drainage tank according to a first embodiment of the present utility model;
FIG. 3 is a functional block diagram of a temperature-controlled drain controller according to a first embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a seal cap according to a first embodiment of the present utility model;
FIG. 5 is a schematic structural diagram of part A of a first embodiment of the present utility model;
fig. 6 is a top view of a load bearing sleeve plate according to a second embodiment of the present utility model.
In the figure: the air compressor comprises an air storage tank main body of an air compressor, a 2 temperature control drainage box, a 3 temperature control drainage controller, a 4 telescopic connecting pipe, a 5 sealing cover, a 6 drainage valve, a 7 drainage pipe, an 8 telescopic supporting rod, a 9 bearing sleeve plate, a 10 heating component, a 11 liquid level switch, a 12 electromagnetic valve, a 13 pressure sensor, a 14 drainage outlet, a 15 waterproof pipe, a 16 runner pipe, a 17 sealing port, an 18 external thread, a 19 internal thread, a 20 rubber block, a 21 water collecting cover, a 22 sealing plate b, a 23 sealing plate a, a 24 limiting screw rod, a 25 rubber filling pad, a 26 limiting screw hole, a 27 liquid storage tank and a 28 pressure release chamber.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5, the present utility model provides a first technical solution: the air storage tank of the automatic water draining air compressor in winter comprises an air storage tank main body 1 of the air compressor and a temperature control drainage tank 2 assembled at the bottom end of the air storage tank main body 1 of the air compressor, wherein a temperature control drainage controller 3 is assembled on the outer wall of the temperature control drainage tank 2;
the bottom of the air storage tank main body 1 of the air compressor is provided with a drain pipe 7, the top end of the temperature control drain tank 2 is provided with a drain outlet 14, a telescopic connecting pipe 4 is inserted into the drain outlet 14, the telescopic connecting pipe 4 is a telescopic water pipe, and both end parts are provided with hard pipes;
a sealing cover 5 is arranged between the telescopic connecting pipe 4 and the drain pipe 7, a drain valve 6 is arranged on the drain pipe 7, and the drain valve 6 controls the switch of the drain pipe 7;
the upper end of the inside of the temperature control drainage box 2 is provided with a pressure relief chamber 28, the lower end of the inside of the temperature control drainage box 2 is provided with a liquid storage tank 27, the inside of the temperature control drainage box 2 is divided into an upper part and a lower part by a partition plate, the upper part is provided with the pressure relief chamber 28, the lower part is provided with the liquid storage tank 27, and water discharged through the drain pipe 7 firstly enters the pressure relief chamber 28;
a flow port is arranged between the pressure release chamber 28 and the liquid storage tank 27, a flow pipe 16 is inserted into the flow port, and water in the pressure release chamber 28 can be discharged into the liquid storage tank 27 through the flow pipe 16;
the pressure sensor 13 is arranged in the pressure release chamber 28, the electromagnetic valve 12 is arranged on the flow pipe 16, the pressure sensor 13 is arranged with reference to the rated pressure value set by the factory of the tank body, the accumulated water occupies the space of the compressed air, and the pressure value is increased when the space is reduced, so that the electromagnetic valve 12 is triggered to be opened, and the accumulated water is discharged into the liquid storage tank 27 by the person;
the heating component 10 is assembled in the liquid storage tank 27, and the liquid storage tank 27 is provided with three heating components R1/R2/R3, and can be freely adjusted by a temperature control switch from 18 ℃ to 60 ℃ according to different use environments. Let jar body bottom have the temperature more than zero all the time, let water not freeze, outdoor use then consider appropriate jar body heat preservation to reach better heat preservation and energy-conserving effect, the inner wall of reservoir 27 is equipped with liquid level switch 11, and the reservoir is equipped with liquid level switch K, and K1 is spacing for last, and K2 is spacing down, and K1 triggers the solenoid valve and closes and prevent that liquid from overflowing, and starts the drain pump with liquid discharge liquid storage pond.
The interior of the liquid storage tank 27 is also provided with a drainage pump and a power supply component, the heating component 10 is provided with a temperature control switch, and the pressure sensor 13, the electromagnetic valve 12, the liquid level switch 11, the drainage pump, the heating component 10, the temperature control switch and the power supply component are electrically connected with the temperature control drainage controller 3.
The inner wall of the liquid storage tank 27 is provided with a water drain port, a water drain pipe 15 is inserted in the water drain port, the end part of the water drain pipe 15 is connected with the output end of the drainage pump, and the end part of the water drain pipe 15 can be externally connected with a plastic water storage bag, a barrel or other water containers.
Sealing ports 17 are formed in the upper end and the lower end of the sealing cover 5, the end part of the telescopic connecting pipe 4 is inserted into the sealing port 17 at the lower end, the end part of the drain pipe 7 is inserted into the sealing port 17 at the upper end, an inner thread 19 is formed in the inner wall of the sealing cover 5, an outer thread 18 is formed in the outer wall of the telescopic connecting pipe 4, the inner thread 19 is matched with the outer thread 18, the sealing cover 5 can move outside the drain pipe 7, and accordingly the drain pipe 7 is connected with the telescopic connecting pipe 4 through the sealing cover 5 in a threaded mode.
The outside of the drain pipe 7 is provided with a sealing plate a 23 and a sealing plate b 22 in a sleeved mode in the sealing cover 5, rubber blocks 20 are uniformly arranged on the side wall, facing the sealing plate b 22, of the sealing plate a 23, the outer diameters of the sealing plate a 23 and the sealing plate b 22 are both larger than the inner diameter of the sealing opening 17, the end portion of the telescopic connecting pipe 4 is provided with a water collecting cover 21, and the inner diameter of the water collecting cover 21 is larger than the outer diameter of the drain pipe 7.
The telescopic support rods 8 are arranged on two sides of the top end of the temperature control drainage tank 2, the bearing sleeve plates 9 are arranged at the end parts of the telescopic support rods 8, and the bearing sleeve plates 9 are sleeved outside the air storage tank main body 1 of the air compressor.
The rubber filling pad 25 is installed to the inner wall of bearing sleeve plate 9, and rubber filling pad 25 and the laminating of the outer wall of air compressor machine gas holder main part 1 set up, will bear the weight of the space filling between sleeve plate 9 and the air compressor machine gas holder main part 1 outer wall through rubber filling pad 25 to be applicable to not unidimensional air compressor machine gas holder main part 1.
The working principle of the first embodiment: when the air compressor air storage tank is used, firstly, the temperature control drainage tank 2 is placed at the bottom of the air compressor air storage tank body 1, then the bearing sleeve plate 9 is sleeved outside the air compressor air storage tank body 1 through the expansion of the expansion supporting rod 8, then the drainage pipe 7 is connected with the expansion connecting rod 4 through the sealing cover 5, so that the air compressor air storage tank body 1 is communicated with the temperature control drainage tank 2, when the air storage tank mechanical drainage valve 6 is communicated with the electromagnetic valve 12, the tank body is drained, the tank body 6 is in an open state, water accumulation occupies a compressed air space, the pressure value can rise when the space is reduced, the electromagnetic valve 12 is triggered to be opened, the water accumulation is released to the liquid storage tank 27, the tank body bottom always has a temperature higher than zero through the heating assembly 10, water is prevented from freezing, the liquid storage tank 27 is provided with the liquid level switch K, the K1 is limited up, the K2 is limited down, the electromagnetic valve is triggered to be closed to prevent liquid from overflowing, the drainage pump is started to drain liquid from the liquid storage tank, the electric heating assembly is triggered to cut off, and the electric heating assembly is triggered to prevent the heater from being exposed due to the too low water level. The heating is regulated and controlled by a temperature control switch, and classified delivery is performed, so that the waste of electric energy and the impact on line load are avoided, and the R1, R2, R3 is 500W and the voltage is 220V.
Referring to fig. 1 to 6, the present utility model provides a second technical solution: the air storage tank of the automatic water draining air compressor in winter comprises an air storage tank main body 1 of the air compressor and a temperature control drainage tank 2 assembled at the bottom end of the air storage tank main body 1 of the air compressor, wherein a temperature control drainage controller 3 is assembled on the outer wall of the temperature control drainage tank 2;
the bottom of the air storage tank main body 1 of the air compressor is provided with a drain pipe 7, the top end of the temperature control drain tank 2 is provided with a drain outlet 14, a telescopic connecting pipe 4 is inserted into the drain outlet 14, the telescopic connecting pipe 4 is a telescopic water pipe, and both end parts are provided with hard pipes;
a sealing cover 5 is arranged between the telescopic connecting pipe 4 and the drain pipe 7, a drain valve 6 is arranged on the drain pipe 7, and the drain valve 6 controls the switch of the drain pipe 7;
the upper end of the inside of the temperature control drainage box 2 is provided with a pressure relief chamber 28, the lower end of the inside of the temperature control drainage box 2 is provided with a liquid storage tank 27, the inside of the temperature control drainage box 2 is divided into an upper part and a lower part by a partition plate, the upper part is provided with the pressure relief chamber 28, the lower part is provided with the liquid storage tank 27, and water discharged through the drain pipe 7 firstly enters the pressure relief chamber 28;
a flow port is arranged between the pressure release chamber 28 and the liquid storage tank 27, a flow pipe 16 is inserted into the flow port, and water in the pressure release chamber 28 can be discharged into the liquid storage tank 27 through the flow pipe 16;
the pressure sensor 13 is arranged in the pressure release chamber 28, the electromagnetic valve 12 is arranged on the flow pipe 16, the pressure sensor 13 is arranged with reference to the rated pressure value set by the factory of the tank body, the accumulated water occupies the space of the compressed air, and the pressure value is increased when the space is reduced, so that the electromagnetic valve 12 is triggered to be opened, and the accumulated water is discharged into the liquid storage tank 27 by the person;
the heating component 10 is assembled in the liquid storage tank 27, and the liquid storage tank 27 is provided with three heating components 10 of R1/R2/R3, and can be freely adjusted by a temperature control switch from 18 ℃ to 60 ℃ according to different use environments. Let jar body bottom have the temperature more than zero all the time, let water not freeze, outdoor use then consider appropriate jar body heat preservation to reach better heat preservation and energy-conserving effect, the inner wall of reservoir 27 is equipped with liquid level switch 11, and the reservoir is equipped with liquid level switch K, and K1 is spacing for last, and K2 is spacing down, and K1 triggers the solenoid valve and closes and prevent that liquid from overflowing, and starts the drain pump with liquid discharge liquid storage pond.
The telescopic support rods 8 are arranged on two sides of the top end of the temperature control drainage tank 2, the bearing sleeve plates 9 are arranged at the end parts of the telescopic support rods 8, and the bearing sleeve plates 9 are sleeved outside the air storage tank main body 1 of the air compressor.
The limiting screw holes 26 are formed in the outer walls of the two sides of the bearing sleeve plate 9, the limiting screw rods 24 are connected with the inner walls of the limiting screw holes 26 in a screwed mode, the end portions of the limiting screw rods 24 are attached to the outer walls of the air storage tank main body 1 of the air compressor, the limiting screw rods 24 are screwed into the limiting screw holes 26, and accordingly the bearing sleeve plate 9 is in contact with the air storage tank main body 1 of the air compressor, and the bearing sleeve plate 9 can be connected with the air storage tank main body 1 of the air compressor.
The difference with the first technical scheme is that: the bearing sleeve plate 9 is connected with the air machine air storage tank main body 1 through the limit screw 24, so that the bearing sleeve plate is applicable to the installation of air machine air storage tanks with different sizes.
The other components in the second technical scheme are the same as those in the first technical scheme.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an automatic drainage air compressor machine gas holder in winter, includes air compressor machine gas holder main part (1) and assembles control by temperature change drain box (2) in air compressor machine gas holder main part (1) bottom, its characterized in that: the outer wall of the temperature control drainage box (2) is provided with a temperature control drainage controller (3);
the bottom of the air storage tank main body (1) of the air compressor is provided with a drain pipe (7), the top end of the temperature control drain box (2) is provided with a drain outlet (14), and a telescopic connecting pipe (4) is inserted into the drain outlet (14);
a sealing cover (5) is arranged between the telescopic connecting pipe (4) and the drain pipe (7), and a drain valve (6) is arranged on the drain pipe (7);
the upper end of the inside of the temperature control drainage box (2) is provided with a pressure release chamber (28), and the lower end of the inside of the temperature control drainage box (2) is provided with a liquid storage tank (27);
a circulation port is formed between the pressure release chamber (28) and the liquid storage tank (27), and a circulation pipe (16) is inserted in the circulation port;
the pressure release chamber (28) is internally provided with a pressure sensor (13), and the flow pipe (16) is provided with an electromagnetic valve (12);
the inside of reservoir (27) is equipped with heating element (10), the inner wall of reservoir (27) is equipped with liquid level switch (11).
2. The air storage tank of an automatic winter drainage air compressor of claim 1, wherein: the inside of reservoir (27) still is equipped with drain pump and power supply module, heating element (10) are equipped with temperature detect switch, pressure sensor (13), solenoid valve (12), liquid level switch (11), drain pump, heating element (10), temperature detect switch and power supply module all with control by temperature change drainage controller (3) electric connection.
3. The air storage tank of the automatic water draining air compressor in winter according to claim 2, wherein: the inner wall of the liquid storage tank (27) is provided with a water drain port, a water drain pipe (15) is inserted into the water drain port, and the end part of the water drain pipe (15) is connected with the output end of the drainage pump.
4. The air storage tank of an automatic winter drainage air compressor of claim 1, wherein: sealing ports (17) are formed in the upper end and the lower end of the sealing cover (5), the end part of the telescopic connecting pipe (4) is inserted into the lower end of the sealing port (17), the end part of the drain pipe (7) is inserted into the upper end of the sealing port (17), an inner thread (19) is formed in the inner wall of the sealing cover (5), an outer thread (18) is formed in the outer wall of the telescopic connecting pipe (4), and the inner thread (19) is matched with the outer thread (18).
5. The air storage tank of the automatic winter drainage air compressor of claim 4, wherein: the outside of drain pipe (7) is located sealed lid (5) endotheca and is equipped with closing plate a (23) and closing plate b (22), closing plate a (23) evenly installs rubber piece (20) towards the lateral wall of closing plate b (22), water collecting cover (21) are installed to the tip of flexible connecting pipe (4), and the internal diameter of water collecting cover (21) is greater than the external diameter of drain pipe (7).
6. The air storage tank of an automatic winter drainage air compressor of claim 1, wherein: the telescopic support rods (8) are arranged on two sides of the top end of the temperature control drainage box (2), the bearing sleeve plate (9) is arranged at the end part of each telescopic support rod (8), and the bearing sleeve plate (9) is sleeved outside the air storage tank main body (1) of the air compressor.
7. The air storage tank of an automatic winter drainage air compressor of claim 6, wherein: the inner wall of the bearing sleeve plate (9) is provided with a rubber filling pad (25), and the rubber filling pad (25) is attached to the outer wall of the air storage tank main body (1) of the air compressor.
8. The air storage tank of an automatic winter drainage air compressor of claim 6, wherein: limiting screw holes (26) are formed in the outer walls of the two sides of the bearing sleeve plate (9), limiting screws (24) are connected to the inner walls of the limiting screw holes (26) in a threaded mode, and the end portions of the limiting screws (24) are attached to the outer wall of the air storage tank main body (1) of the air compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321500140.6U CN220287110U (en) | 2023-06-13 | 2023-06-13 | Air storage tank of automatic water draining air compressor in winter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321500140.6U CN220287110U (en) | 2023-06-13 | 2023-06-13 | Air storage tank of automatic water draining air compressor in winter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220287110U true CN220287110U (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321500140.6U Active CN220287110U (en) | 2023-06-13 | 2023-06-13 | Air storage tank of automatic water draining air compressor in winter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220287110U (en) |
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2023
- 2023-06-13 CN CN202321500140.6U patent/CN220287110U/en active Active
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