CN220623680U - Air storage and exhaust device of heating system tail end heating pipeline - Google Patents

Air storage and exhaust device of heating system tail end heating pipeline Download PDF

Info

Publication number
CN220623680U
CN220623680U CN202321811850.0U CN202321811850U CN220623680U CN 220623680 U CN220623680 U CN 220623680U CN 202321811850 U CN202321811850 U CN 202321811850U CN 220623680 U CN220623680 U CN 220623680U
Authority
CN
China
Prior art keywords
exhaust
tank
air
heating
pipeline
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321811850.0U
Other languages
Chinese (zh)
Inventor
高伟
温永春
杨雪彬
朱根强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhangjiakou Cigarette Factory Co Ltd
Original Assignee
Zhangjiakou Cigarette Factory Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhangjiakou Cigarette Factory Co Ltd filed Critical Zhangjiakou Cigarette Factory Co Ltd
Priority to CN202321811850.0U priority Critical patent/CN220623680U/en
Application granted granted Critical
Publication of CN220623680U publication Critical patent/CN220623680U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The utility model discloses an air storage and exhaust device of a heating system tail end heating pipeline, which comprises an air storage tank and an exhaust tank connected with the air storage tank through an exhaust pipeline, wherein an air inlet is arranged at the bottom end of the exhaust tank, an exhaust device is arranged in the exhaust tank, the exhaust device comprises an exhaust cover plate arranged in the exhaust tank, a pressure piston penetrating through an air outlet hole formed in the exhaust cover plate, a pressing plate and a pressure spring, the pressing plate and the pressure spring are respectively connected with the upper end and the lower end of the pressure piston, a sealing ring is arranged at the bottom end surface of the pressing plate, and an exhaust port is arranged at the top end of the exhaust tank. The utility model has the characteristics of simple structural design, low manufacturing cost, convenient use, rapid exhaust, strong practicability and the like, and can timely exhaust the air in the tail end heating pipeline, so that the temperature in the pipeline can be always kept at the normal heating temperature, and the stability of tail end heating of a heating system is improved.

Description

Air storage and exhaust device of heating system tail end heating pipeline
Technical Field
The utility model relates to the technical field of pipeline exhaust equipment, in particular to a storage and exhaust device of a heating pipeline at the tail end of a heating system.
Background
The heating pipeline at the tail end of the heating system is an indispensable component part in the heating system, plays an important role in conveying heat energy to the heating terminal, and is important for realizing indoor comfortable heating effect. The heating area of the industrial enterprise production factory is large, the distance of a heating pipeline is long, the condition that the heating at the tail end of the heating pipeline is unheated often occurs, the normal heating temperature is reduced to 35 ℃, indoor personnel can not feel the existence of the heating at the temperature, and overhauling and investigation of overhauling personnel find that the condition is mainly caused by the fact that the tail end heating pipeline enters air, and the main reasons for the air entering the pipeline are as follows:
1. in the initial stage of heating by heating, air stored in a pipeline: at the initial stage of starting the heating system, a part of air remains in the heating pipeline due to incomplete emptying, and the air blocks the flow of hot water in the pipeline, so that the heating of the tail end heating pipeline is insufficient;
2. intake air caused by overhaul of heating system: when the heating equipment is maintained and overhauled, air is easy to enter a heating pipeline system, the air can obstruct hot water flow after heating is recovered, and the heating effect of a tail-end heating pipeline is also affected;
3. intake air caused by water supplement of heating system: when the water supplementing operation of the heating system is performed, under the condition of no attention, the condition that the air existing in the heating pipeline is removed easily occurs, so that the pressure inside and outside the heating pipeline is changed, the outside air is forced to enter the heating pipeline system, the flow of hot water is influenced by the air entering, and the condition that the heating of the tail end heating pipeline is insufficient occurs.
Under normal conditions, maintenance personnel adopt the climbing operation to adjust the heating temperature of terminal heating pipeline through the form that the valve on the exhaust duct was opened to the exhaust duct that is located the eminence carries out on-the-spot exhaust, and this mode is not only wasted time and energy, and climbing operation still has the potential safety hazard.
For this reason, provide the exhaust apparatus for heating pipeline of application number 201820989152.2 among the prior art, it discloses heating pipeline, gas-storage chamber and exhaust chamber, heating pipeline inner wall mid-mounting has the gas-liquid filter screen, heating pipeline top middle part fixed mounting has the intake pipe, intake pipe top and gas-storage chamber fixed connection, the gas outlet has been seted up at gas outlet in gas-storage chamber inner wall top middle part, sealed recess has been seted up at the gas outlet top, the exhaust chamber is installed at the gas-storage chamber top, the gas vent is all installed with the top left and right sides in the middle part in the left and right sides of the exhaust chamber, exhaust chamber inner wall top mid-mounting has closing device. After the exhaust operation is finished, the spring at the upper end of the sealing plug pushes the sealing plug to be completely aligned with the sealing groove so as to achieve the sealing effect, however, deviation is easy to occur in the falling process of the sealing plug impacted by gas discharged from the gas outlet, the sealing plug cannot be completely aligned with the sealing groove, gaps exist between the sealing plug and the sealing groove, sealing is not tight, external air enters the heating pipeline again, and then the tail-end heating pipeline still has insufficient heating.
Disclosure of Invention
In view of the above, the utility model provides a gas storage and exhaust device of a heating system tail end heating pipeline, which can solve the technical problems that when a gas outlet hole is impacted by exhaust gas in the prior art, the gas outlet hole is not aligned with the gas outlet hole, so that gaps exist between the gas outlet hole and the gas outlet hole, sealing is not tight, external air enters the heating pipeline again, and the tail end heating pipeline still has insufficient heating.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides an end heating pipeline's of heating system gas storage exhaust apparatus, its includes the gas holder and through exhaust pipe and the exhaust jar of its connection, the bottom of exhaust jar is provided with the air inlet, the inside of exhaust jar is provided with exhaust apparatus, exhaust apparatus is including setting up in the inside exhaust apron of exhaust jar, running through the pressure piston of the venthole of seting up on the exhaust apron and respectively with the upper and lower both ends clamp plate and the pressure spring of being connected of pressure piston, the bottom face of clamp plate is provided with the sealing washer, the top of exhaust jar is provided with the gas vent.
As an improvement of the technical scheme, the gas storage tank is a tank body with the volume value of 5L, and the top end of the gas storage tank is communicated with the gas inlet of the gas exhaust tank through the gas exhaust pipeline.
As an improvement of the above technical solution, the exhaust cover plate is fixedly connected to an inner wall surface of the exhaust tank, and the interior of the exhaust tank is divided into a lower chamber and an upper chamber by the exhaust cover plate.
As an improvement of the technical scheme, the center part of the exhaust cover plate is provided with the air outlet hole, and the pressure piston can penetrate from the upper part of the exhaust cover plate to the lower part of the exhaust cover plate through the air outlet hole; the aperture of the air outlet hole is larger than the diameter of the pressure piston.
As the improvement of the technical scheme, the number of the pressure springs is provided with a plurality of pressure springs which are uniformly distributed at the bottom end of the pressure piston, the top ends of the pressure springs are fixedly connected with the bottom end of the pressure piston, and the bottom ends of the pressure springs are fixedly connected with the inner bottom end surface of the exhaust tank.
Preferably, the number of the pressure springs is two, namely a spring unit I and a spring unit II, wherein the spring unit I is positioned on the left side of the pressure piston, and the spring unit II is positioned on the right side of the pressure piston.
As an improvement of the technical scheme, the center part of the bottom end surface of the pressing plate is fixedly connected with the top end of the pressure piston, and the pressing plate is arranged right above the air outlet hole of the exhaust cover plate; the shape of the pressing plate is round, and the diameter of the pressing plate is larger than the aperture of the air outlet hole.
As an improvement of the technical scheme, a hole is formed in the center of the sealing ring, and the pressure piston penetrates through the hole in the center of the sealing ring and is connected with the bottom end face of the pressing plate.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
1. the utility model has the characteristics of simple structural design, low manufacturing cost, convenient use, rapid exhaust, strong practicability and the like, and can timely exhaust the air in the tail end heating pipeline, so that the temperature in the pipeline can be always kept at the normal heating temperature, and the stability of tail end heating of a heating system is improved;
2. according to the utility model, the pressure piston penetrating through the air outlet hole and the pressing plate connected with the top end of the pressure piston are arranged at the air outlet hole, under the pulling action of the pressure spring at the bottom end of the pressure piston, the impact of the air discharged from the air outlet hole on the bottom end surface of the pressing plate can not cause the positions of the pressure piston and the pressing plate relative to the air outlet hole to be changed substantially, so that gaps are not reserved between the air outlet hole and the pressing plate, sealing is not tight, external air enters the heating pipeline again, and the condition that the heating pipeline at the tail end is still insufficient is caused;
3. the sealing ring is arranged, so that external air can be prevented from entering the lower chamber of the exhaust tank and the air storage tank through the air outlet holes from the gap between the pressing plate and the exhaust cover plate, and then enters the tail end heating pipeline, so that the external air is wrapped by water in the tail end heating pipeline again to influence the heating temperature of the tail end heating pipeline;
other advantageous effects of the present utility model will be further described in the following detailed description.
Drawings
The utility model will be further described with reference to the accompanying drawings and specific examples,
FIG. 1 is a schematic diagram of the structure of the present utility model;
wherein: 1. a gas storage tank; 2. an exhaust line; 3. an exhaust tank; 401. an exhaust cover plate; 402. a pressure piston; 403. a pressing plate; 404. a pressure spring; 5. an exhaust port; 6. and (3) sealing rings.
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.
In the description of the present utility model, it should be understood that the terms "above," "below," "front," "rear," "left," "right," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," "connected," and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1, an air storage and exhaust device of a heating system terminal heating pipe,
the air exhaust device comprises an air storage tank 1 and an exhaust tank 3 connected with the air storage tank through an exhaust pipeline 2, wherein an air inlet is formed in the bottom end of the exhaust tank 3, an exhaust device is arranged in the exhaust tank 3, the exhaust device comprises an exhaust cover plate 401 arranged in the exhaust tank 3, a pressure piston 402 penetrating through an air outlet hole formed in the exhaust cover plate 401, a pressing plate 403 and a pressure spring 404, the pressing plate 403 and the pressure spring 404 are respectively connected with the upper end and the lower end of the pressure piston 402, a sealing ring 6 is arranged on the bottom end surface of the pressing plate 403, and an air outlet 5 is formed in the top end of the exhaust tank 3;
in the embodiment of the utility model, the air storage tank 1 is a tank body with a volume value of 5L, the top end of the air storage tank 1 is communicated with the air inlet of the air exhaust tank 3 through the air exhaust pipeline 2, the bottom end of the air storage tank 1 is connected with the tail end heating pipeline of the heating system through the air storage pipeline, and the air storage tank 1 is positioned at the high position of the tail end heating pipeline, so that the air storage tank 1 is arranged on the tail end heating pipeline to facilitate air to enter the air storage tank 1 due to light air quality, and particularly, when the air entering the heating pipeline is wrapped by water in the pipeline to the air storage pipeline, the air enters the air storage tank 1 along the air storage pipeline and then enters the air exhaust tank 3 along the air exhaust pipeline;
in the embodiment of the present utility model, the exhaust cover 401 is fixedly connected to the inner wall surface of the exhaust tank 3, the interior of the exhaust tank 3 is divided into a lower chamber and an upper chamber by the exhaust cover 401, the lower chamber is used for storing air, the upper chamber is communicated with the outside, and the air in the lower chamber can be discharged into the atmosphere through the upper chamber;
in the embodiment of the present utility model, the central portion of the exhaust cover 401 is provided with an air outlet, and the pressure piston 402 can pass through the air outlet from the upper portion of the exhaust cover 401 to the lower portion of the exhaust cover 401; the aperture of the air outlet hole is larger than the diameter of the pressure piston 402, and the pressure piston 402 can move up and down relative to the air outlet cover plate 401 in the air outlet hole; the air outlet holes can be used for communicating a lower chamber and an upper chamber in the exhaust tank 3;
in the embodiment of the present utility model, the number of the pressure springs 404 is set to be a plurality, which are uniformly arranged at the bottom end of the pressure piston 402, the top end of the pressure spring 404 is fixedly connected with the bottom end of the pressure piston 402, the bottom end of the pressure spring 404 is fixedly connected with the inner bottom end surface of the exhaust tank 3, and the connection of the pressure spring 404 and the pressure piston 402 can limit the position of the pressure piston 402 relative to the exhaust cover plate 401 in the up-down motion of the air outlet hole;
preferably, the number of the pressure springs 404 is two, namely a spring unit i and a spring unit ii, specifically, the spring unit i is located at the left side of the pressure piston 402, the top end of the spring unit i is fixedly connected with the left side edge of the bottom end surface inside the exhaust tank 3, the bottom end of the spring unit i is fixedly connected with the left side edge of the bottom end surface inside the exhaust tank 3, the spring unit ii is located at the right side of the pressure piston 402, the top end of the spring unit ii is fixedly connected with the right side edge of the bottom end surface inside the exhaust tank 3, and the bottom end of the spring unit ii is fixedly connected with the right side edge of the bottom end surface inside the exhaust tank 3;
in the embodiment of the present utility model, the center of the bottom surface of the pressure plate 403 is fixedly connected to the top end of the pressure piston 402, the pressure plate 403 is disposed directly above the air outlet hole of the air exhaust cover plate 401, and the pressure piston 402 can drive the pressure plate 403 connected thereto to act in the same direction when acting; the shape of the pressing plate 403 is set to be round, and the diameter of the pressing plate 403 is larger than the aperture of the air outlet hole; the pressure piston 402 penetrating through the air outlet hole and the pressure plate 403 connected with the top end of the pressure piston 402 are arranged at the air outlet hole, under the pulling action of the pressure spring 404 at the bottom end of the pressure piston 402, the impact of the air discharged from the air outlet hole on the bottom end surface of the pressure plate 403 can not change the positions of the pressure piston 402 and the pressure plate 403 relative to the air outlet hole, gaps are not reserved between the air outlet hole and the pressure plate 403, sealing is not tight, and external air enters a heating pipeline again, so that the condition that the heating of the tail end heating pipeline is still insufficient is caused;
in the embodiment of the utility model, a hole is formed in the central portion of the sealing ring 6, the pressure piston 402 penetrates through the hole in the center of the sealing ring 6 and is connected with the bottom end surface of the pressing plate 403, when the lower chambers of the air storage tank 1 and the exhaust tank 3 are in an air storage stage, the lower surface of the sealing ring 6 is in a close contact state with the upper surface of the exhaust cover plate 401, the sealing ring 6 can prevent external air from entering the lower chamber of the exhaust tank 3 and the air storage tank 1 through the air outlet holes from the gap between the pressing plate 403 and the exhaust cover plate 401, so that the external air enters the terminal heating pipeline again and is wrapped by water in the terminal heating pipeline to influence the heating temperature of the terminal heating pipeline, and the pressure piston can also prevent the upper chamber of the exhaust tank 3 from being communicated with the lower chamber of the exhaust tank 3 through the gap between the pressing plate 403 and the exhaust cover plate 401 to influence the pressure in the lower chambers of the air storage tank 1 and the exhaust tank 3, so that the pressure in the lower chambers of the air storage tank 1 and the exhaust tank 3 cannot reach the effect of jacking the pressing plate 403 to exhaust the terminal heating pipeline.
In combination with the above, the application method of the utility model is as follows:
when the air entering the heating pipeline is wrapped by the water in the pipeline to the air storage pipeline, the air enters the air storage tank 1 along the air storage pipeline and then enters the lower chamber of the exhaust tank 3 along the exhaust pipeline for storage; when the lower chambers of the air storage tank 1 and the exhaust tank 3 are in an air storage stage, the lower surface of the sealing ring 6 at the bottom end surface of the pressure plate 403 is in a close contact state with the upper surface of the exhaust cover plate 401, after a period of time, air in the lower chambers of the air storage tank 1 and the exhaust tank 3 is accumulated to a certain extent, the air pressure in the lower chambers of the air storage tank 1 and the exhaust tank 3 is increased, the high-pressure air exerts upward force on the lower surface of the pressure plate 403 contacted with the air storage tank 1, the pressure plate 403 is gradually far away from the exhaust cover plate 401, the lower chamber of the exhaust tank 3 is further communicated with the upper chamber of the exhaust tank 3 through a gap between the side wall surface of the pressure piston 402 and the side wall surface of the air outlet hole, in the process, the pressure piston 402 acts upward in the air outlet hole relative to the exhaust cover plate 401, the pressure spring 404 connected with the bottom end of the pressure piston 402 is stretched, and under the elastic force of the pressure spring 404, the pressure piston 402 is prevented from being pulled out of the air outlet hole under the action of the high-pressure air, and the high-pressure air is further discharged from the air outlet hole through the lower chamber to the air outlet 5 of the exhaust tank 3; after exhausting for a period of time, the air pressure in the lower chambers of the air storage tank 1 and the exhaust tank 3 is reduced, and under the action of gravity of the pressing plate 403 and resilience force of the pressure spring 404, the pressing plate 403 falls down and returns to the original position, so that the lower surface of the sealing ring 6 on the bottom end surface of the pressing plate 403 contacts with the upper surface of the exhaust cover plate 401, and the lower chambers of the air storage tank 1 and the exhaust tank 3 return to a non-communication state.
The utility model is created and implemented in the actual working environment, and the data before and after implementation of the utility model are compared, and the following table is provided:
table 1 comparison of Pre-and post-implementation tables
As can be seen from the table, after the utility model is implemented, maintenance personnel are only required to maintain and debug the heating pipeline of the heating system once every year in the initial heating stage, and the accumulated time is 160 minutes each time, so that the working efficiency is improved by 480 minutes compared with that before the utility model is implemented.
The temperature of the tail end heating pipeline of the heating system is reduced from 50 ℃ to below 35 ℃ due to the fact that the air is arranged in the pipeline before the tail end heating pipeline is created, the air in the tail end heating pipeline is timely discharged after the tail end heating pipeline is implemented, the temperature in the pipeline can be always kept at the normal heating temperature of 50 ℃, and the tail end heating stability of the heating system is improved.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. The utility model provides a heating system terminal heating pipeline store up exhaust apparatus which characterized in that: the exhaust device comprises an air storage tank and an exhaust tank connected with the air storage tank through an exhaust pipeline, wherein an air inlet is formed in the bottom end of the exhaust tank, an exhaust device is arranged in the exhaust tank, the exhaust device comprises an exhaust cover plate arranged in the exhaust tank, a pressure piston penetrating through an air outlet formed in the exhaust cover plate, and a pressing plate and a pressure spring which are respectively connected with the upper end and the lower end of the pressure piston, the bottom end face of the pressing plate is provided with a sealing ring, and an exhaust port is formed in the top end of the exhaust tank.
2. The exhaust and storage device for a heating system end heating pipe according to claim 1, wherein: the gas storage tank selects a tank body with the volume value of 5L, and the top end of the gas storage tank is communicated with the gas inlet of the exhaust tank through an exhaust pipeline.
3. The exhaust and storage device for a heating system end heating pipe according to claim 1, wherein: the exhaust cover plate is fixedly connected to the inner wall surface of the exhaust tank, and the interior of the exhaust tank is divided into a lower chamber and an upper chamber through the exhaust cover plate.
4. The exhaust and storage device for a heating system end heating pipe according to claim 1, wherein: the center part of the exhaust cover plate is provided with an air outlet hole, and the pressure piston can penetrate from the upper part of the exhaust cover plate to the lower part of the exhaust cover plate through the air outlet hole; the aperture of the air outlet hole is larger than the diameter of the pressure piston.
5. The exhaust and storage device for a heating system end heating pipe according to claim 1, wherein: the quantity of pressure spring is provided with a plurality of, and its even layout is in the bottom of pressure piston, pressure spring's top and pressure piston's bottom fixed connection, pressure spring's bottom and exhaust tank's inside bottom surface fixed connection.
6. The exhaust and storage device for a heating system end heating pipe of claim 5, wherein: the number of the pressure springs is two.
7. The exhaust and storage device for a heating system end heating pipe according to claim 1, wherein: the center part of the bottom end surface of the pressing plate is fixedly connected with the top end of the pressure piston, and the pressing plate is arranged right above the air outlet hole of the exhaust cover plate; the shape of the pressing plate is round, and the diameter of the pressing plate is larger than the aperture of the air outlet hole.
8. The exhaust and storage device for a heating system end heating pipe according to claim 1, wherein: the center part of the sealing ring is provided with a hole, and the pressure piston penetrates through the hole in the center of the sealing ring and is connected with the bottom end surface of the pressing plate.
CN202321811850.0U 2023-07-11 2023-07-11 Air storage and exhaust device of heating system tail end heating pipeline Active CN220623680U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321811850.0U CN220623680U (en) 2023-07-11 2023-07-11 Air storage and exhaust device of heating system tail end heating pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321811850.0U CN220623680U (en) 2023-07-11 2023-07-11 Air storage and exhaust device of heating system tail end heating pipeline

Publications (1)

Publication Number Publication Date
CN220623680U true CN220623680U (en) 2024-03-19

Family

ID=90225826

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321811850.0U Active CN220623680U (en) 2023-07-11 2023-07-11 Air storage and exhaust device of heating system tail end heating pipeline

Country Status (1)

Country Link
CN (1) CN220623680U (en)

Similar Documents

Publication Publication Date Title
CN220623680U (en) Air storage and exhaust device of heating system tail end heating pipeline
CN204777903U (en) Six powerful adsorption systems
CN208203638U (en) A kind of Surge Prevention System of gas turbine
CN214945268U (en) Solar water pump with quick cooling function
CN216236889U (en) Self-cleaning natural gas filter
CN104973358A (en) Chemical tank pressure balance device
CN208397667U (en) A kind of lubricating oil station applied to bulb-type hydraulic generating set jacked up with high pressure
CN212319406U (en) Integrated filling and discharging valve for high-pressure hydrogen cylinder
CN101363617B (en) Closed type condensate water recovery device
CN203362266U (en) Oil-gas separation device
CN206679232U (en) A kind of novel submerged air feed equipment
CN2699080Y (en) Electromagnetic impulse valve
CN207125312U (en) A kind of full mechanical vacuum pump group applied to tobacco leaf conditioning
CN215505959U (en) Sealed compressed air filter
CN111456929A (en) Intelligent compressed air system
CN216305992U (en) Constant wind pressure automatic switch device
CN221322640U (en) Small-size convenient auxiliary air compressor device
CN204745946U (en) Mounting structure of bag collector cylinder and off -line valve
CN216950749U (en) Central control vacuum system
CN220957922U (en) Gas diffuses recovery unit
CN220303408U (en) Waterproof dustproof and exhaust apparatus of lubrication pump oil tank
CN208381411U (en) Polymerization reaction kettle exhaust outlet
CN208564523U (en) Multifunctional vacuum pump
CN208990294U (en) A kind of novel ammonia water oil water separator
CN218812071U (en) Air exhaust mechanism of vacuum coating machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant