CN113585141B - Screwing self-locking connecting device for detachable sewage pipeline of cleaning machine and implementation method - Google Patents
Screwing self-locking connecting device for detachable sewage pipeline of cleaning machine and implementation method Download PDFInfo
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- CN113585141B CN113585141B CN202110720488.5A CN202110720488A CN113585141B CN 113585141 B CN113585141 B CN 113585141B CN 202110720488 A CN202110720488 A CN 202110720488A CN 113585141 B CN113585141 B CN 113585141B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
- E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
- E01H1/103—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers in which the soiled loosening or washing liquid is removed, e.g. by suction
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention relates to the technical field of sewage pipelines of cleaning machines, in particular to a screwing self-locking connecting device for a detachable sewage pipeline of a cleaning machine and an implementation method. According to the invention, the sewage cylinder is taken down from the main body of the cleaning machine through the claw, the pressing sealing disc is rotated upwards along the rotating shaft to be opened, sewage is discharged from the inside of the water storage cylinder, the detachable sewage pipe assembly is taken out from the main body of the cleaning machine to be directly washed, so that the cleaning can be completed, the quick disassembly and the installation of the sewage pipeline are realized, the cleaning is convenient to take down, the cleaning effect is better, the blockage is not easy, the cleaning efficiency is obviously improved, the service life is prolonged, and the use is convenient and quick.
Description
Technical Field
The invention relates to the technical field of sewage pipelines of cleaning machines, in particular to a screwing self-locking connecting device for a detachable sewage pipeline of a cleaning machine and an implementation method.
Background
The cleaning machine is a road cleaning system mechanical sweeping device widely used in roads, public places, and other places, has very wide application, and can be generally divided into: road sweeper, cleaning collector and special collector are mainly three kinds of cleaning machines in general life, the road sweeper can only clean garbage on the road to two sides of the road, and the cleaning machine is usually only used on suburban roads.
In the prior art, the floor brush end of the sewage pipeline is fixed to the bottom of the dust cup after the cleaning machine works, the sewage is remained or other solids or hair can not be cleaned by utilizing the self-cleaning function of the cleaning machine because the smooth inner surface cannot be realized in the pipeline as required, the sewage pipeline can only be cleaned by means of the slender brush or is designed to be as short as possible, and meanwhile, the sewage pipeline is not cleaned in place because the pipeline is bent and difficult to clean, so that the cleaning effect of the cleaning is influenced.
Disclosure of Invention
The invention provides a screwing self-locking connecting device for a detachable sewage pipeline of a cleaning machine and an implementation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a sewage pipeline is dismantled with screwing self-locking connecting device, including the cleaning machine main part, the cleaning machine main part includes main sewage pipeline subassembly, can dismantle sewage pipe subassembly and bilge pit subassembly, main sewage pipeline subassembly includes the hose, the hose lower extreme has the air-supply line through external screw thread threaded connection, the air-supply line front end is equipped with the round brush, round brush right side upper end is equipped with the briquetting, round brush right side lower extreme is equipped with the scraper blade, hose upper end suit organism end, the hose is linked together with the air-supply line, the round brush is located cleaning machine main part lower extreme left side and rotates with it to be connected, briquetting and scraper blade are all connected fixedly with the cleaning machine main part.
Preferably, the detachable sewage pipe assembly comprises a sewage pipe, an upper sealing ring is sleeved on the outer wall of the upper end of the sewage pipe, a lower sealing ring is sleeved on the outer wall of the lower end of the sewage pipe, the lower sealing ring is sleeved inside the machine body end and is tightly pressed with the machine body end, and the sewage pipe is mounted inside the lower end of the cleaning machine body and is matched with the lower end of the cleaning machine body in a clamping manner.
Preferably, the sewage bucket assembly comprises a sewage bucket, the right end inside the sewage bucket is provided with a water storage bucket, the lower end of the water storage bucket is provided with a sealing assembly, an air inlet is formed in the upper left end of the water storage bucket, the upper end of the water storage bucket is provided with a slot, a filter screen is inserted in the slot, a lifting block is fixedly arranged on the outer wall of the left upper corner of the sewage bucket, and the top surface of the sewage bucket is provided with two clamping claws in a bilateral symmetry structure.
Preferably, the lower end of the sewage cylinder is tightly pressed with the top surface of the lower sealing ring, the sewage cylinder is communicated with the hose, the upper end of the left side of the cleaner main body is provided with a suction fan, the lower end of the suction fan is sleeved with an air suction pipe, and the top surface of the slot is communicated with the bottom surface of the air suction pipe.
Preferably, the sealing assembly comprises a circular ring block, a stop block is fixedly arranged at the left end of the top surface of the circular ring block, two supporting blocks are fixedly arranged on the bottom surface of the stop block in a front-back symmetrical structure, a rotating shaft is arranged below the stop block, a sealing disc is rotationally connected in the middle of the rotating shaft, and torsion springs are sleeved on the outer walls of the front end and the rear end of the rotating shaft.
Preferably, the annular block is fixedly connected with the inner wall of the water storage cylinder and tightly pressed with the annular block, the supporting block is fixedly connected with the annular block, the rotating shaft is fixedly connected with the supporting block, the outer end of the torsion spring is fixedly connected with the supporting block, and the inner end of the torsion spring is fixedly connected with the sealing disc.
Preferably, the sewage cylinder is fixedly connected with the cleaner body through the claw, and the sewage pipeline is in plug-in connection with the machine body.
The implementation method of the screwing self-locking connecting device for the detachable sewage pipeline of the cleaning machine comprises the following steps of:
and (3) water inlet: firstly, pushing a main body of the cleaning machine to move so that the rolling brush rotates to adsorb sewage on the ground, scraping the sewage by the scraping plate, squeezing the rolling brush through the pressing block to enable the sewage to fall into the air inlet pipe, enabling the sewage to enter the hose from the air inlet pipe through the suction fan, and enabling the sewage to enter the water storage barrel through the sewage pipeline to be collected;
and (3) water storage: after sewage enters the water storage barrel, the suction fan enables redundant air in the water storage barrel to pass through the filter screen from the air inlet, then enter the slot and enter the suction fan along the air suction pipe, the suction fan discharges the air into the cleaner main body, the filter screen is made of waterproof and breathable materials and filters the sewage, the sewage is prevented from entering the left end of the sewage storage barrel, at the moment, the sewage negative pressure in the water storage barrel continuously rises, the suction fan is closed after the sewage quantity reaches the position of the air inlet, and at the moment, the water pressure and the torsion spring squeeze the sealing disc to rotate along the rotating shaft, tightly press and seal with the circular ring block, and collect the sewage in the water storage barrel;
cleaning: the sewage cylinder is taken down from the cleaning machine main body through the claw, the pressing sealing disc is rotated upwards along the rotating shaft to be opened, sewage is discharged from the inside of the water storage cylinder, and the detachable sewage pipe assembly is taken out from the cleaning machine main body to be directly washed, so that the cleaning can be completed.
By adopting the technical scheme, the invention has the beneficial effects that:
1. the main body of the cleaning machine moves to enable the rolling brush to rotate so as to absorb sewage on the ground, the scraping plate scrapes the sewage to collect the sewage, the pressing block extrudes the rolling brush to enable the sewage to fall into the air inlet pipe, the sewage enters the hose from the air inlet pipe through the suction fan and then enters the water storage barrel through the sewage pipeline to collect the sewage, the suction fan is closed after the sewage quantity reaches the position of the air inlet, and at the moment, the water pressure and the torsion spring extrude the sealing disc to rotate along the rotating shaft to be tightly pressed and sealed with the circular ring block so as to collect the sewage in the water storage barrel; the sewage cylinder is taken down from the cleaning machine main body through the claw, the pressing sealing disc is rotated upwards along the rotating shaft to be opened, sewage is discharged from the inside of the water storage cylinder, and the detachable sewage pipe assembly is taken out from the cleaning machine main body to be directly washed, so that the cleaning can be completed. The self-cleaning function of the self-cleaning machine is utilized, the self-cleaning machine cannot clean, the self-cleaning machine can clean or design a sewage pipeline to be as short as possible by means of the slender hairbrush, meanwhile, the pipeline is not easy to clean, so that the sewage pipeline cannot be cleaned in place, the cleaning of the sewage pipeline is troublesome and laborious, the use effect of the cleaning machine is affected, the quick disassembly and the installation of the sewage pipeline are realized, the cleaning is convenient to take down, the cleaning effect is better, the cleaning effect is not easy to block, the cleaning efficiency is remarkably improved, the service life is prolonged, and the cleaning machine is convenient and quick to use.
2. The detachable sewage pipe assembly is arranged at the machine body end on the main sewage pipe assembly, the upper sealing ring and the lower sealing ring of the detachable sewage pipe assembly are utilized to form a sealing pipeline between the sewage cylinder and the main sewage pipe assembly, so that effective guarantee is provided for suction of the suction fan, the suction effect is prevented from being influenced by air leakage, sewage cannot enter the main body of the cleaning machine, the integrity of the main body of the cleaning machine is fully protected, the main body of the cleaning machine is prevented from being damaged by sewage leakage, and the service life of equipment is prolonged.
3. The sealing disc is rotated along the rotating shaft, is blocked by the stop block and is not easy to turn over, the sealing disc is conveniently sealed with the circular ring block through the extrusion of the torsion spring and the water pressure, sewage leakage during the removal of the sewage cylinder is effectively prevented, the filter screen slides along the slot, the filter screen is conveniently taken out for cleaning and replacement, the filtering effect is improved, the sewage is prevented from entering the air suction pipe, the integrity of the cleaner main body is protected, and the cleaning machine is simple in structure and convenient and quick to operate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only of the present invention, protecting some embodiments, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of a hose structure of the present invention;
FIG. 3 is a schematic view of a removable sewer assembly of the present invention;
FIG. 4 is a schematic view of the construction of the wastewater tank assembly of the present invention;
FIG. 5 is a schematic view of a seal assembly according to the present invention.
The reference numerals in the figures illustrate: 1. a cleaner body; 2. a main sewer line assembly; 201. a hose; 202. an air inlet pipe; 203. a rolling brush; 204. briquetting; 205. a scraper; 206. a machine body end; 3. a removable sewer assembly; 301. a sewage conduit; 302. an upper sealing ring; 303. a lower sealing ring; 4. a sewage bucket assembly; 401. a sewage drum; 402. a water storage cylinder; 403. a seal assembly; 4031. a circular ring block; 4032. a stop block; 4033. a support block; 4034. a rotating shaft; 4035. a sealing plate; 4036. a torsion spring; 404. an air inlet; 405. a slot; 406. a filter screen; 407. lifting blocks; 408. a claw; 5. a suction fan; 6. an air suction pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown in fig. 1-5, the connection device for screwing and self-locking of the detachable sewage pipeline of the cleaning machine comprises a cleaning machine main body 1, wherein the cleaning machine main body 1 comprises a main sewage pipeline component 2, a detachable sewage pipeline component 3 and a sewage bucket component 4, the main sewage pipeline component 2 comprises a hose 201, the lower end of the hose 201 is connected with an air inlet pipe 202 through external threads, the front end of the air inlet pipe 202 is provided with a rolling brush 203, the upper right end of the rolling brush 203 is provided with a pressing block 204, the lower right end of the rolling brush 203 is provided with a scraping plate 205, the upper end of the hose 201 is sleeved with an organism end 206, the hose 201 is communicated with the air inlet pipe 202, the rolling brush 203 is positioned on the left side of the lower end of the cleaning machine main body 1 and is rotationally connected with the cleaning machine main body 1, and the pressing block 204 and the scraping plate 205 are fixedly connected with the cleaning machine main body 1.
The detachable sewage pipe assembly 3 comprises a sewage pipe 301, an upper sealing ring 302 is sleeved on the outer wall of the upper end of the sewage pipe 301, a lower sealing ring 303 is sleeved on the outer wall of the lower end of the sewage pipe 301, the lower sealing ring 303 is sleeved inside the machine body end 206 and tightly pressed with the machine body end 206, and the sewage pipe 301 is mounted inside the lower end of the cleaner body 1 and matched with the lower end of the cleaner body in a clamping manner.
The sewage bucket assembly 4 comprises a sewage bucket 401, a water storage bucket 402 is arranged at the right end inside the sewage bucket 401, a sealing assembly 403 is arranged at the lower end of the water storage bucket 402, an air inlet 404 is formed above the left end of the water storage bucket 402, a slot 405 is formed in the upper end of the water storage bucket 402, a filter screen 406 is inserted into the slot 405, a lifting block 407 is fixedly arranged on the outer wall of the upper left corner of the sewage bucket 401, and two clamping claws 408 are fixedly arranged on the top surface of the sewage bucket 401 in a bilateral symmetry structure.
The lower end of the sewage cylinder 401 is tightly pressed with the top surface of the lower sealing ring 303, the sewage cylinder 401 is communicated with the hose 201, the upper end of the left side of the cleaner body 1 is provided with a suction fan 5, the lower end of the suction fan 5 is sleeved with an air suction pipe 6, and the top surface of the slot 405 is communicated with the bottom surface of the air suction pipe 6.
The sealing component 403 comprises a circular ring block 4031, a stop block 4032 is fixedly arranged at the left end of the top surface of the circular ring block 4031, two supporting blocks 4033 are fixedly arranged on the bottom surface of the stop block 4032 in a front-back symmetrical structure, a rotating shaft 4034 is arranged below the stop block 4032, a sealing disc 4035 is rotatably connected in the middle of the rotating shaft 4034, and torsion springs 4036 are sleeved on the outer walls of the front end and the rear end of the rotating shaft 4034.
The circular ring block 4031 is fixedly connected with the inner wall of the water storage cylinder 402 and tightly pressed with the circular ring block, the supporting block 4033 is fixedly connected with the circular ring block 4031, the rotating shaft 4034 is fixedly connected with the supporting block 4033, the outer end of the torsion spring 4036 is fixedly connected with the supporting block 4033, and the inner end of the torsion spring 4036 is fixedly connected with the sealing disc 4035.
The sewage cylinder 401 is fixedly connected with the cleaner body 1 through the claw 408, and the sewage pipeline 301 is in plug-in fit with the body end 206.
The working principle of the invention (the screwing self-locking connecting device for the detachable sewage pipeline of the cleaning machine) is that the implementation method comprises the following steps:
when the invention is used, the cleaner body 1 is pushed to move so that the rolling brush 203 rotates to absorb sewage on the ground, the scraping plate 205 scrapes the sewage to collect, the rolling brush 203 is extruded by the pressing block 204 to fall into the air inlet pipe 202, and the sewage enters the hose 201 from the air inlet pipe 202 through the suction fan 5 and then enters the water storage cylinder 402 through the sewage pipeline 301 to be collected; after sewage enters the water storage cylinder 402, the suction fan 5 enables redundant air in the water storage cylinder 402 to enter the suction fan 5 along the suction pipe 6 after passing through the filter screen 406 from the air inlet 404, the suction fan 5 discharges the air into the cleaner body 1 along the suction pipe 6, the filter screen 406 is made of waterproof and breathable materials to filter the sewage, the sewage is prevented from entering the left end of the sewage cylinder 401, at the moment, the sewage negative pressure in the water storage cylinder 402 continuously rises, the suction fan 5 is closed after the sewage reaches the position of the air inlet 404, at the moment, the water pressure and the torsion spring 4036 extrude the sealing disc 4035 to rotate along the rotary shaft 4034 to be tightly pressed and sealed with the circular ring block 4031, and the sewage in the water storage cylinder 402 is collected; the sewage cylinder 401 is taken down from the cleaner body 1 through the claw 408, the pressing sealing disk 4035 is rotated upwards along the rotating shaft 4034 to open, sewage is discharged from the inside of the water storage cylinder 402, and the detachable sewage pipe assembly 3 is taken out from the cleaner body 1 to be directly washed, so that the cleaning can be completed.
In the description herein, reference to the terms "one embodiment," "example," "specific example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (3)
1. The utility model provides a sewage pipeline is dismantled with screwing up connecting device of auto-lock to cleaning machine which characterized in that: including cleaning machine main part (1), cleaning machine main part (1) includes main sewer line subassembly (2), can dismantle sewer pipe subassembly (3) and sewer drum subassembly (4), main sewer pipe subassembly (2) are including hose (201), hose (201) lower extreme has air-supply line (202) through external screw thread threaded connection, air-supply line (202) front end is equipped with round brush (203), round brush (203) right side upper end is equipped with briquetting (204), round brush (203) right side lower extreme is equipped with scraper blade (205), hose (201) upper end suit organism end (206), hose (201) are linked together with air-supply line (202), round brush (203) are located cleaning machine main part (1) lower extreme left side and rotate with it to be connected, briquetting (204) and scraper blade (205) are all connected fixedly with cleaning machine main part (1);
the detachable sewage pipe assembly (3) comprises a sewage pipe (301), an upper sealing ring (302) is sleeved on the outer wall of the upper end of the sewage pipe (301), a lower sealing ring (303) is sleeved on the outer wall of the lower end of the sewage pipe (301), the lower sealing ring (303) is sleeved inside the machine body end (206) and tightly pressed with the machine body end, and the sewage pipe (301) is installed inside the lower end of the cleaner body (1) and is matched with the cleaner body in a clamping manner;
the sewage bucket assembly (4) comprises a sewage bucket (401), a water storage bucket (402) is arranged at the right end inside the sewage bucket (401), a sealing assembly (403) is arranged at the lower end of the water storage bucket (402), an air inlet (404) is formed in the upper left end of the water storage bucket (402), a slot (405) is formed in the upper end of the water storage bucket (402), a filter screen (406) is inserted inside the slot (405), lifting blocks (407) are fixedly arranged on the outer wall of the upper left corner of the sewage bucket (401), and two clamping claws (408) are fixedly arranged on the top surface of the sewage bucket (401) in a bilateral symmetry structure;
the lower end of the sewage cylinder (401) is tightly pressed with the top surface of the lower sealing ring (303), the sewage cylinder (401) is communicated with the hose (201), the upper end of the left side of the cleaner main body (1) is provided with a suction fan (5), the lower end of the suction fan (5) is sleeved with an air suction pipe (6), and the top surface of the slot (405) is communicated with the bottom surface of the air suction pipe (6);
the sealing assembly (403) comprises a circular ring block (4031), a stop block (4032) is fixedly arranged at the left end of the top surface of the circular ring block (4031), two supporting blocks (4033) are fixedly arranged on the bottom surface of the stop block (4032) in a front-back symmetrical structure, a rotating shaft (4034) is arranged below the stop block (4032), a sealing disc (4035) is rotationally connected in the middle of the rotating shaft (4034), and torsion springs (4036) are respectively sleeved on the outer walls of the front end and the rear end of the rotating shaft (4034);
the water storage device is characterized in that the circular ring block (4031) is fixedly connected with the inner wall of the water storage barrel (402) and tightly pressed with the inner wall of the water storage barrel, the supporting block (4033) is fixedly connected with the circular ring block (4031), the rotating shaft (4034) is fixedly connected with the supporting block (4033), the outer end of the torsion spring (4036) is fixedly connected with the supporting block (4033), and the inner end of the torsion spring (4036) is fixedly connected with the sealing disc (4035).
2. The connection device for screwing self-locking of a detachable sewer line of a washing machine according to claim 1, wherein: the sewage cylinder (401) is fixedly connected with the cleaner body (1) through the claw (408), and the sewage pipeline (301) is in plug-in connection with the machine body end (206).
3. The method for implementing a screwing self-locking connection device for a removable sewer line of a washing machine according to claim 2, comprising the following steps:
and (3) water inlet: firstly, pushing a main body (1) of the cleaning machine to move so that a rolling brush (203) rotates to adsorb sewage on the ground, scraping a scraping plate (205) to collect the sewage, extruding the rolling brush (203) through a pressing block (204) to enable the sewage to fall into an air inlet pipe (202), and enabling the sewage to enter a hose (201) from the air inlet pipe (202) through a suction fan (5) and then enter a water storage cylinder (402) through a sewage pipeline (301) to collect the sewage;
and (3) water storage: after sewage enters the water storage barrel (402), the suction fan (5) enables redundant air in the water storage barrel (402) to pass through the filter screen (406) from the air inlet (404), then the air enters the slot (405) and enters the suction fan (5) along the air suction pipe (6), the suction fan (5) discharges the air into the cleaner main body (1), the filter screen (406) is made of waterproof and breathable materials to filter the sewage, the sewage is prevented from entering the left end of the sewage storage barrel (401), at the moment, the negative pressure of the sewage in the water storage barrel (402) continuously rises, the suction fan (5) is closed after the sewage reaches the position of the air inlet (404), at the moment, the water pressure and the torsion spring (4036) extrude the sealing disc (4035) to rotate along the rotating shaft (4034) to be tightly pressed and sealed with the circular ring block (4031), and the sewage in the water storage barrel (402) is collected;
cleaning: the sewage cylinder (401) is taken down from the cleaner main body (1) through the claw (408), the pressing sealing disc (4035) is rotated upwards along the rotating shaft (4034) to be opened, sewage is discharged from the inside of the water storage cylinder (402), and the detachable sewage pipe assembly (3) is taken out from the cleaner main body (1) to be directly washed, so that the cleaning can be finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110720488.5A CN113585141B (en) | 2021-06-28 | 2021-06-28 | Screwing self-locking connecting device for detachable sewage pipeline of cleaning machine and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110720488.5A CN113585141B (en) | 2021-06-28 | 2021-06-28 | Screwing self-locking connecting device for detachable sewage pipeline of cleaning machine and implementation method |
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| CN113585141A CN113585141A (en) | 2021-11-02 |
| CN113585141B true CN113585141B (en) | 2023-04-21 |
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