CN114308940B - Pipeline cleaning device suitable for building wind system - Google Patents
Pipeline cleaning device suitable for building wind system Download PDFInfo
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- CN114308940B CN114308940B CN202210002171.2A CN202210002171A CN114308940B CN 114308940 B CN114308940 B CN 114308940B CN 202210002171 A CN202210002171 A CN 202210002171A CN 114308940 B CN114308940 B CN 114308940B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a pipeline cleaning device suitable for a building wind system, which comprises a bottom plate, wherein a control box, a high-pressure air pump, a ball adding bin and a lifting mechanism are sequentially arranged on the bottom plate, an air outlet of the high-pressure air pump is connected to the ball adding bin through an air outlet pipe, a one-way valve is arranged on the air outlet pipe, a piston bin communicated with the ball adding bin is arranged at the upper part of the ball adding bin, a piston rod of the piston bin is connected with a fixed rod positioned above the piston bin, the upper end of the fixed rod is connected with one end of a sliding rod, the middle part of the sliding rod is sleeved on a guide rail rod, the lower end of the guide rail rod is fixedly connected with the outer wall of a ball adding motor fixed on the ball adding bin, the other end of the sliding rod is hinged with a connecting rod, the other end of the connecting rod is connected with an output shaft of the ball adding motor through a hinged crank, a ball conveying pipe is further arranged on the side surface of the piston bin, an inlet bin for containing a cleaning ball is arranged at the inlet of the ball conveying pipe, and a telescopic hose is connected to the bottom of the ball adding bin. The device has the advantages of good cleaning effect, high efficiency, simple and reliable structure and convenient operation.
Description
Technical Field
The invention relates to the technical field of building heating and ventilation systems, in particular to a pipeline cleaning device suitable for a building wind system.
Background
The wind pipe of the building air-conditioning wind system is a hidden area easy to accumulate ash and breed germs, the national quality supervision, inspection and quarantine administration issues the national standard of the cleaning norm of the air-conditioning ventilation system GB1920-2003, the health department issues the sanitary norm of the centralized air-conditioning ventilation system in public places, the construction department formulates the operation management norm of the air-conditioning ventilation system, the cleaning force of the central air-conditioning pipeline is enhanced, and the concept of the healthy central air conditioner is popularized.
At present, dust in a pipeline of an air system is generally lifted to air by a dust-lifting method and dust is sucked away by a dust-collecting mode, but the method has three problems, namely, the dust-collecting mode cannot be thoroughly cleaned, the dust-collecting pipeline is limited by the length of about ten meters only, the single operation distance is short, and a cleaning robot is required to be reserved or opened on site, so that the construction is complex and the time consumption is long. Considering the pipeline characteristics of the wind system, the design of the cleaning ball cleaning mode by pushing the cleaning ball through the gas is more reasonable and efficient.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a pipeline cleaning device suitable for a building wind system, which has the advantages of good cleaning effect, high efficiency, simple and reliable structure, flexible movement and convenient operation.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a pipeline cleaning device suitable for building wind system, its key lies in: the automatic ball feeding device comprises a bottom plate, wherein a control box, a high-pressure air pump, a ball feeding mechanism and a lifting mechanism are sequentially arranged from one side to the other side on the bottom plate, the control box is electrically connected with the high-pressure air pump, an air outlet of the high-pressure air pump is connected to the ball feeding mechanism through an air outlet pipe, a one-way valve is arranged on the air outlet pipe, a telescopic hose is connected to the bottom of the ball feeding mechanism, the telescopic hose is fixed to the top of the lifting mechanism, and a connecting mechanism used for connecting with a wind system pipeline is arranged at the outlet of the telescopic hose.
Further, the bottom of the bottom plate is provided with a universal wheel set and a driving wheel set, and a driving shaft of the driving wheel set is connected with an output shaft of a driving motor fixed at the bottom of the bottom plate.
Further, the driving motor is arranged at the bottom of the control box.
Further, the top of control box is equipped with the touch-sensitive screen, is equipped with control module in this control box, with the network module of this control module electricity connection, network module is used for communicating with control terminal, the touch-sensitive screen is connected with the control module electricity, be provided with the operation handle on the control box, be equipped with on the operation handle with the control button of control module electricity connection.
Further, elevating system includes bracing piece, lift lead screw, elevator motor and lifter, the bottom of bracing piece with bottom plate fixed connection, the both ends of lift lead screw are fixed through the bearing frame on the bracing piece, elevator motor be fixed in the top of bracing piece and its output shaft with lift lead screw fixed connection, the bottom and the threaded connection of lifter are in slider fixed connection on the lift lead screw, flexible hose is fixed the top of lifter.
Further, a sliding rail is arranged on one side, close to the lifting screw rod, of the supporting rod, and one side, close to the supporting rod, of the sliding block is in sliding fit with the sliding rail.
Further, coupling mechanism includes coaxial fixed ring and locking ring that sets up the mounting groove of hoop has been seted up to the fixed ring outer wall, be equipped with a plurality of mounting holes in the mounting groove, be provided with the locking post in every mounting hole, the upper end of locking post is formed with annular bulge, overlaps on the locking post between this annular bulge and the mounting groove bottom and is equipped with reset spring, the locking ring is located in the mounting groove, and set up on the inner wall of this locking ring with the locking groove of the top butt of locking post be connected with first adjusting ear on the fixed ring be connected with the second adjusting ear on the locking ring, all be provided with the regulation hole on first adjusting ear and the second adjusting ear, be equipped with adjusting bolt in two in the regulation hole, adjusting nut is installed in this adjusting bolt cooperation.
Further, the ball adding mechanism comprises a ball adding bin, a piston bin communicated with the ball adding bin is arranged on the upper portion of the ball adding bin, a piston rod of the piston bin is connected with a fixed rod located above the piston bin, the upper end of the fixed rod is connected with one end of a sliding rod, the middle of the sliding rod is sleeved on a guide rail rod in a sliding mode, the lower end of the guide rail rod is fixedly connected with the outer wall of a ball adding motor fixed on the ball adding bin, a connecting rod is hinged to the other end of the sliding rod, the other end of the connecting rod is connected with an output shaft of the ball adding motor through a hinged crank, a ball conveying pipe is further arranged on the side face of the piston bin, and an inlet bin for containing a cleaning ball is arranged at the inlet of the ball conveying pipe.
Further, a piston is arranged in the piston bin, a piston rod is connected to the piston, a ball adding hole is formed in the middle of the piston, and the piston can bring a cleaning ball into the ball adding mechanism under the driving of a ball adding motor.
Further, two containing boxes for containing cleaning balls and a tool box for containing cleaning tools are further arranged on the bottom plate, the containing boxes are arranged on two sides of the lifting mechanism, and the containing boxes are close to the ball adding bin.
The invention has the remarkable effects that: the cleaning ball is pushed by high-pressure gas to realize the cleaning function of the air conditioning air system pipeline, and the automatic supply of the cleaning ball is realized by the automatic ball supply mechanism, so that the cleaning ball cleaning device has the advantages of good cleaning effect, high efficiency, simple and reliable structure, flexible movement and convenient operation.
Drawings
FIG. 1 is a schematic view of a first view angle structure of the present invention;
FIG. 2 is a schematic view of a second view angle structure of the present invention;
FIG. 3 is a schematic view of a third view angle structure of the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 is a first partial schematic structural view of the present invention;
FIG. 6 is a cross-sectional view of the ball adding bin and the piston bin;
FIG. 7 is a second partial schematic structural view of the present invention;
FIG. 8 is a schematic view of the structure of the connecting mechanism;
FIG. 9 is a cross-sectional view of the attachment mechanism;
fig. 10 is a schematic structural view of the locking ring.
Detailed Description
The following describes the embodiments and working principles of the present invention in further detail with reference to the drawings.
As shown in fig. 1-10, a pipeline cleaning device suitable for a building wind system comprises a bottom plate 1, wherein a control box 2, a high-pressure air pump 3, a ball adding mechanism and a lifting mechanism are sequentially arranged from one side to the other side on the bottom plate 1, the control box 2 is electrically connected with the high-pressure air pump 3, an air outlet of the high-pressure air pump 3 is connected to the ball adding bin 401 through an air outlet pipe 302, a one-way valve 301 is arranged on the air outlet pipe 302, the bottom of the ball adding mechanism is connected with a flexible hose 410, the flexible hose 410 is fixed at the top of the lifting mechanism, and a connecting mechanism for connecting with a wind system pipeline is arranged at an outlet of the flexible hose 410.
Referring to fig. 3, the bottom of the base plate 1 is provided with a universal wheel set 101 and a driving wheel set 102, a driving shaft of the driving wheel set 102 is connected with an output shaft of a driving motor 103 fixed at the bottom of the base plate 1, and the driving motor 103 is controlled by the control box 2 so as to drive the driving wheel set 102 to rotate, so that when a central air conditioning air system pipeline needs to be cleaned, the whole device can be moved to the side of the central air conditioning air system pipeline by matching the driving wheel set 102 at the lower end of the base plate 1 with the universal wheel set 101. And the driving motor 103 is arranged at the bottom of the control box 2 for wiring convenience.
In order to facilitate the control of the device and monitor and keep the parameters of the device, the top of the control box 2 is provided with a touch screen 201, a control module and a network module electrically connected with the control module are arranged in the control box 2, the network module is used for communicating with a control terminal, the touch screen 201 is electrically connected with the control module, the control box 2 is provided with an operation handle 202, and the operation handle 202 is provided with a control button electrically connected with the control module.
By pressing the control button, the operation state of each motor is controlled, and the steering of the present apparatus is controlled by the operator adjusting the operation handle 202. Remote control of the device and remote uploading of relevant operation parameters of the device are realized through a network module.
In this embodiment, the ball adding mechanism includes a ball adding bin 401, a piston bin 411 that is connected with the ball adding bin 401 is provided at the upper part of the ball adding bin 401, a piston rod of the piston bin 411 is connected with a fixing rod 409 that is located above the piston bin 411, an upper end of the fixing rod 409 is connected with one end of a sliding rod 408, a middle part of the sliding rod 408 is slid on a guide rail rod 405, a lower end of the guide rail rod 405 is connected and fixed with an outer wall of a ball adding motor 406 that is fixed on the ball adding bin 401, a connecting rod 404 is hinged at the other end of the sliding rod 408, the other end of the connecting rod 404 is connected with an output shaft of the ball adding motor 406 through a hinged crank 407, a ball conveying pipe 402 is further provided at a side surface of the piston bin 411, and an inlet bin 4 for holding cleaning balls is provided at an inlet of the ball conveying pipe 402.
Preferably, a piston 403 is arranged in the piston bin 411, a piston rod is connected to the piston 403, a ball adding hole 412 is formed in the middle of the piston 403, and the piston 403 can bring the cleaning ball into the ball adding bin 401 under the drive of the ball adding motor 406.
When the ball adding motor 406 works, firstly, a cleaning ball is sucked into a ball adding hole 412 of a piston 403 in a piston bin 411, then the ball adding motor 406 drives a sliding rod 408 to move downwards, the cleaning ball is pressed into the ball adding bin 401, and then the cleaning ball is sent into a telescopic hose 410 through high-pressure air of a high-pressure air pump 3, so that the cleaning ball in the ball adding bin 401 is automatically sent into the piston bin 411.
In this example, the elevating system includes bracing piece 5, lift lead screw 502, elevator motor 503 and lifter 504, the bottom of bracing piece 5 with bottom plate 1 fixed connection, the both ends of lift lead screw 502 are fixed through the bearing frame on the bracing piece 5, elevator motor 503 is fixed in the top of bracing piece 5 and its output shaft with lift lead screw 502 fixed connection, the bottom of lifter 504 is in with threaded connection slider 505 fixed connection on the lift lead screw 502, flexible hose 410 is fixed the top of lifter 504.
The lifting motor 503 is controlled to rotate, so that the lifting rod 504 can be driven to move up and down along the lifting screw rod 502, and the telescopic hose 410 can be suitable for air conditioning air system pipeline air outlets with different heights. In addition, in order to make the lifting process smoother and more stable, a sliding rail 501 is arranged on one side of the supporting rod 5 close to the lifting screw 502, and one side of the sliding block 505 close to the supporting rod 5 is in sliding fit with the sliding rail 501.
As a preferred embodiment, the connecting mechanism comprises a fixing ring 6 and a locking ring 601 which are coaxially arranged, a circumferential mounting groove is formed in the outer wall of the fixing ring 6, a plurality of mounting holes are formed in the mounting groove, a locking column 605 is arranged in each mounting hole, an annular protrusion 607 is formed at the upper end of the locking column, a return spring 608 is sleeved on the locking column 605 between the annular protrusion 607 and the bottom of the mounting groove, the locking ring 601 is arranged in the mounting groove 607, a toothed locking groove 609 abutted to the top of the locking column 605 is formed in the inner wall of the locking ring 601, a first adjusting lug 606 is connected to the fixing ring 6, a second adjusting lug 602 is connected to the locking ring 601, adjusting holes are formed in the first adjusting lug 606 and the second adjusting lug 602, and adjusting bolts 603 are arranged in the two adjusting holes and are matched with adjusting nuts 604.
Through the connecting mechanism with the structure, after the fixed ring 6 is sleeved with the wind system pipeline, the adjusting nut 604 is adjusted to enable the fixed ring 6 and the locking ring 601 to rotate relatively, the locking column 605 is extruded through the locking groove 609 of the inner ring of the locking ring 601, and the locking column stretches into the fixed ring 6 through the mounting hole and abuts against the wind system pipeline, so that the connecting mechanism is fixedly connected with the wind system pipeline; after cleaning, the adjusting nut 604 can be reversely adjusted, so that the fixing ring 6 and the locking ring 601 relatively rotate, at the moment, the locking groove 609 of the inner ring of the locking ring 601 does not press the locking post 605, and the locking post 605 is restored to the initial position under the elastic force of the return spring 608, so that the connecting mechanism is separated from the air system pipeline, and the device can be conveniently connected and detached with the air system pipeline.
As a more preferable embodiment, the base plate 1 is further provided with two storage boxes 105 for placing cleaning balls and a tool box 106 for placing cleaning tools, the two storage boxes 105 are disposed on two sides of the lifting mechanism, and the storage boxes 105 are disposed close to the ball feeding bin 401. Meanwhile, the inner diameter of the ball conveying pipe 402 is slightly larger than the diameter of the cleaning ball, and the inner diameter of the telescopic hose 410 is slightly smaller than the diameter of the cleaning ball.
The working principle of the device is as follows:
when a central air conditioning air system pipeline needs to be cleaned, the whole device can be moved to the side of the central air conditioning air system pipeline through the cooperation of the driving wheel set 102 at the lower end of the bottom plate 1 and the universal wheel set 101;
the lifting motor 503 drives the screw nut mechanism to enable the lifting rod 504 to move, and drives the telescopic hose 410 to be close to an air outlet of a central air conditioning air system pipeline;
after the connecting mechanism is sleeved on the air outlet, the adjusting nut 604 is adjusted to enable the fixed ring 6 and the locking ring 601 to rotate relatively, and the locking column 605 is extruded through the locking groove 609 structure with the tooth shape of the inner ring of the locking ring 601 to enable the fixed ring 6 to be fixed on the air outlet of the air system pipeline;
the staff puts the cleaning ball in the storage box into the inlet bin 4, and the cleaning ball enters the ball adding hole 412 of the piston 403 under the action of gravity and suction force, and the cleaning ball is brought into the ball adding bin 401 after the ball adding motor 406 drives the crank 407 and the sliding rod 408 to move downwards;
by setting parameters such as air pressure and the like on the touch screen 201 remotely, starting the high-pressure air pump 3, enabling the high-pressure air pump 3 to generate high-pressure air to be input into the air outlet pipe 302, enabling the cleaning ball to enter an air conditioning pipeline under the action of the high-pressure air after the ball adding hole in the piston 403 is communicated with the air outlet pipe, enabling the cleaning ball to deform and squeeze due to the fact that the diameter of the air conditioning pipeline is slightly smaller than that of the cleaning ball, taking away dust on the pipe wall of an air system in the forward movement process of the cleaning ball, enabling the piston 403 to move upwards under the movement of the crank 407 sliding block mechanism after the ball conveying is completed, preparing for the next ball to be conveyed, sealing the end of the piston 403 with the piston bin 411 when the piston 403 is located on the upper side, effectively guaranteeing air pressure in the air conveying pipeline, preventing air leakage, affecting cleaning effect, enabling the cleaning ball to move only towards the direction of the flexible hose 410 due to the fact that the one-way valve 301 is arranged at the outlet of the high-pressure air pump 3, and preventing faults from occurring. In the cleaning process, the touch screen can display information such as the number of the cleaning balls pushed by the device.
In the present embodiment, a circular pipe is taken as an example, and when the wind system pipe is square or rounded square, the pipe of the present device may be designed to have a corresponding shape.
The technical scheme provided by the invention is described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (6)
1. Pipeline cleaning device suitable for building wind system, its characterized in that: the device comprises a bottom plate, wherein a control box, a high-pressure air pump, a ball adding mechanism and a lifting mechanism are sequentially arranged from one side to the other side on the bottom plate, the control box is electrically connected with the high-pressure air pump, an air outlet of the high-pressure air pump is connected to the ball adding mechanism through an air outlet pipe, a one-way valve is arranged on the air outlet pipe, the bottom of the ball adding mechanism is connected with a flexible hose, the flexible hose is fixed at the top of the lifting mechanism, and a connecting mechanism for connecting with a wind system pipeline is arranged at the outlet of the flexible hose;
the ball adding mechanism comprises a ball adding bin, a piston bin communicated with the ball adding bin is arranged at the upper part of the ball adding bin, a piston rod of the piston bin is connected with a fixed rod positioned above the piston bin, the upper end of the fixed rod is connected with one end of a sliding rod, the middle part of the sliding rod is sleeved on a guide rail rod in a sliding way, the lower end of the guide rail rod is fixedly connected with the outer wall of a ball adding motor fixed on the ball adding bin, the other end of the sliding rod is hinged with a connecting rod, the other end of the connecting rod is connected with an output shaft of the ball adding motor through a hinged crank, a ball conveying pipe is further arranged on the side face of the piston bin, and an inlet bin for containing a cleaning ball is arranged at the inlet of the ball conveying pipe; a piston is arranged in the piston bin, a piston rod is connected to the piston, a ball adding hole is formed in the middle of the piston, and the piston can bring a cleaning ball into the ball adding bin under the drive of a ball adding motor;
starting a high-pressure air pump, wherein the high-pressure air pump generates high-pressure air to be input into an air outlet pipe, a ball adding hole in a piston is communicated with the air outlet pipe, and then the cleaning balls enter an air conditioning pipeline under the action of the high-pressure air;
the bottom of the bottom plate is provided with a universal wheel set and a driving wheel set, and a driving shaft of the driving wheel set is connected with an output shaft of a driving motor fixed at the bottom of the bottom plate;
the lifting mechanism comprises a supporting rod, a lifting screw rod, a lifting motor and a lifting rod, wherein the bottom of the supporting rod is fixedly connected with the bottom plate, two ends of the lifting screw rod are fixed on the supporting rod through bearing seats, the lifting motor is fixed on the top of the supporting rod, an output shaft of the lifting motor is fixedly connected with the lifting screw rod, the bottom end of the lifting rod is fixedly connected with a sliding block on the lifting screw rod in a threaded mode, and the telescopic hose is fixed on the top end of the lifting rod.
2. The duct cleaning apparatus for a building wind system of claim 1, wherein: the driving motor is arranged at the bottom of the control box.
3. The duct cleaning apparatus for a building wind system of claim 1, wherein: the control box is characterized in that a touch screen is arranged at the top of the control box, a control module and a network module electrically connected with the control module are arranged in the control box, the network module is used for communicating with the control terminal, the touch screen is electrically connected with the control module, an operation handle is arranged on the control box, and a control button electrically connected with the control module is arranged on the operation handle.
4. A duct cleaning apparatus for use in a building wind system according to claim 3, wherein: one side of the support rod, which is close to the lifting screw rod, is provided with a sliding rail, and one side of the sliding block, which is close to the support rod, is in sliding fit with the sliding rail.
5. The duct cleaning apparatus for a building wind system of claim 1, wherein: coupling mechanism includes coaxial fixed ring and locking ring that sets up the mounting groove of hoop is seted up to the fixed ring outer wall, be equipped with a plurality of mounting holes in the mounting groove, be provided with the locking post in every mounting hole, the upper end of locking post is formed with annular bulge, and the cover is equipped with reset spring on the locking post between this annular bulge and the mounting groove bottom, the locking ring is located in the mounting groove, and set up on the inner wall of this locking ring with the locking groove of the top butt of locking post be connected with first adjusting ear on the fixed ring be connected with the second adjusting ear on the locking ring, all be provided with the regulation hole on first adjusting ear and the second adjusting ear, two be equipped with adjusting bolt in the regulation hole, this adjusting bolt cooperation is installed adjusting nut.
6. The duct cleaning apparatus for use in a building wind system according to any one of claims 1-5, wherein: the cleaning ball feeding device is characterized in that two containing boxes for containing cleaning balls and a tool box for containing cleaning tools are further arranged on the bottom plate, the containing boxes are arranged on two sides of the lifting mechanism, and the containing boxes are close to the ball feeding mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002171.2A CN114308940B (en) | 2022-01-04 | 2022-01-04 | Pipeline cleaning device suitable for building wind system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002171.2A CN114308940B (en) | 2022-01-04 | 2022-01-04 | Pipeline cleaning device suitable for building wind system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114308940A CN114308940A (en) | 2022-04-12 |
| CN114308940B true CN114308940B (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210002171.2A Active CN114308940B (en) | 2022-01-04 | 2022-01-04 | Pipeline cleaning device suitable for building wind system |
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| US5992905A (en) * | 1998-04-07 | 1999-11-30 | Suiken + Kennedy, Llp | Breech lock fitting joint |
| CN101165403B (en) * | 2006-10-20 | 2010-05-26 | 北京紫光泰和通环保技术有限公司 | Vertical daily garbage incinerator |
| CN101773922A (en) * | 2009-12-25 | 2010-07-14 | 林智勇 | Air duct cleaning device for automotive air conditioning |
| CN102233345A (en) * | 2010-05-05 | 2011-11-09 | 大庆汇达兴业机械制造有限公司 | Automatic ball-throwing pipe cleaner |
| BR112014013120A2 (en) * | 2011-11-30 | 2017-06-13 | Fras Tech As | cleaning ingot |
| JP2017013025A (en) * | 2015-07-04 | 2017-01-19 | エム・テイ・システム株式会社 | Cleaning system of inside of air conditioner duct |
| US10859190B2 (en) * | 2016-05-16 | 2020-12-08 | Victaulic Company | Sprung coupling |
| CN107044570A (en) * | 2017-06-14 | 2017-08-15 | 苏州斯派克思精密机械有限公司 | A kind of portable locking device |
| CN109909025A (en) * | 2019-04-03 | 2019-06-21 | 安徽铜冠池州资源有限公司 | A kind of ball mill multichannel automatic ball-adding device |
| CN211802966U (en) * | 2019-11-27 | 2020-10-30 | 聊城鲁西多元醇新材料科技有限公司 | Solid catalyst cleaning device in tubular reactor |
| CN211802858U (en) * | 2020-03-09 | 2020-10-30 | 张靖宇 | Household central fresh air system pipeline cleaning system |
| CN213495457U (en) * | 2020-09-28 | 2021-06-22 | 长沙开元仪器有限公司 | Air-conveying material pipeline cleaning device |
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2022
- 2022-01-04 CN CN202210002171.2A patent/CN114308940B/en active Active
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