A machine for cleaning with liquid carbon dioxide dry ice

Abstract

The utility model discloses a kind of liquid carbon dioxide dry ice cleaning machines, it is related to dry ice cleaning machine technical field, including cleaning machine body and the spray pipe being set on cleaning machine body, further include air suction pipe, cover body, fan blade, scraper and transmission assembly, air inlet is opened in connecting sleeve, fan blade is arranged at the air intake of air suction pipe inside connecting sleeve, scraper is arranged in the inner wall of cover body, transmission assembly is arranged between fan blade and scraper, for the rotation of fan blade is transmitted to scraper, drive its scraping cover body inner wall.In the utility model, gaseous carbon dioxide and the pollutant being entrained are limited in cover body, are sucked away by air suction pipe, improve the recovery rate of carbon dioxide, and inhibit dust flying, reduce subsequent cleaning burden, set fan blade, transmission assembly and scraper, utilize the airflow generated when suction operation itself as power source, make scraper rotate and scrape cover body inner wall, realize cover body cleaning, solve the problem of sight line by cover body central dust.

Description

Technical Field

[0001] This utility model relates to the field of dry ice cleaning machine technology, and in particular to a dry ice cleaning machine using liquid carbon dioxide. Background Technology

[0002] Dry ice cleaning is an environmentally friendly technology that uses high-pressure spraying of liquid carbon dioxide from a nozzle to form dry ice particles. These dry ice particles impact the surface of objects under the action of compressed air, thereby achieving the purpose of cleaning. During the cleaning process, the dry ice particles sublimate rapidly, without generating secondary waste, and therefore it is widely used in various industries.

[0003] However, in practical applications, dry ice rapidly sublimates upon impact, forming a large amount of gaseous carbon dioxide. This gaseous carbon dioxide carries away pollutants such as oil, rust, and coating debris that have been washed off, causing them to diffuse randomly in all directions. Without effective containment and collection measures, these carried-out pollutants will cause secondary pollution of the working environment. Furthermore, the carbon dioxide medium cannot be effectively recovered, resulting in resource waste. In addition, traditional equipment lacks effective dust collection and suppression mechanisms. The scattered dust not only endangers the health of operators but also increases the subsequent cleaning burden. Summary of the Invention

[0004] The purpose of this invention is to provide a cleaning machine using liquid carbon dioxide dry ice to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cleaning machine using liquid carbon dioxide dry ice, comprising a cleaning machine body and a spray pipe disposed on the cleaning machine body, and further comprising an air intake pipe, a cover, a fan blade, a scraper and a transmission assembly. The air intake pipe is disposed on the outside of the spray pipe and is fixed to the outside of the spray pipe by a connecting sleeve. The cover is threadedly installed on the top of the connecting sleeve, and the connecting sleeve has an air inlet hole that connects the inside of the cover with the inside of the air intake pipe. The fan blade is disposed at the air inlet of the air intake pipe located inside the connecting sleeve. The scraper is disposed on the inner wall of the cover. The transmission assembly is disposed between the fan blade and the scraper for transmitting the rotational motion of the fan blade to the scraper, driving it to scrape the inner wall of the cover.

[0006] Preferably, the transmission assembly includes a rotating drum, which is mounted on the outside of the fan blades, and the bottom of the rotating drum is rotatably connected to the suction end of the suction pipe.

[0007] Preferably, the transmission assembly further includes a sleeve, which is fixedly installed inside the connecting sleeve. The nozzle extends through the connecting sleeve and the sleeve into the inside of the cover. The top of the sleeve has a connecting hole corresponding to the position of the air inlet of the suction pipe. A first bevel gear and a second bevel gear are rotatably installed in the sleeve. The first bevel gear is fixedly sleeved on the outside of the rotating cylinder, and the second bevel gear is sleeved on the outside of the nozzle through a bearing.

[0008] Preferably, the transmission assembly further includes a connecting cylinder, which is mounted on the top of the second bevel gear and rotatably connected to the nozzle. A connecting rod is installed on the outer side of the connecting cylinder, which extends out of the connecting sleeve and is located inside the cover. The end of the connecting rod is fixedly connected to the scraper.

[0009] Preferably, nuts are rotatably connected to the outer sides of both the nozzle and the intake pipe, and the nuts are threadedly connected to the bottom of the connecting sleeve.

[0010] Preferably, the cover has a conical cylindrical structure and is made of transparent material, with an elastic sealing ring at the edge of its open end away from the connecting sleeve.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this application, an air intake pipe and a hood connected to external equipment are provided on the outside of the nozzle. When dry ice is sprayed out of the nozzle for cleaning, gaseous carbon dioxide and the entrained pollutants are confined in the hood. The gaseous carbon dioxide and the entrained pollutants are sucked away through the air intake pipe, thereby improving the carbon dioxide recovery rate and inhibiting dust dispersion, thus reducing the subsequent cleaning burden.

[0012] 2. In this application, a fan blade, a transmission assembly, and a scraper are provided. The airflow generated during the suction operation is used as a power source to make the scraper rotate and scrape the inner wall of the hood, thereby achieving automatic cleaning of the hood. This solves the problem of blurred vision caused by pollutants adhering to the inner wall of the hood, ensuring that the operator always has a clear field of vision during the cleaning process. At the same time, the self-cleaning process is carried out synchronously with the cleaning operation without interrupting the work, realizing efficient and continuous automated operation. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown; Figure 2 A schematic diagram of the nozzle and intake pipe connection structure according to an embodiment of the present invention is shown; Figure 3 A cross-sectional view of the connecting sleeve and cover structure provided according to an embodiment of the present utility model is shown; Figure 4 A cross-sectional view of the internal structure of the sleeve according to an embodiment of the present invention is shown; Figure 5 A bottom view of the connecting sleeve bottom structure provided according to an embodiment of the present utility model is shown.

[0014] Legend: 1. Cleaning machine body; 2. Spray pipe; 3. Suction pipe; 4. Connecting sleeve; 401. Air inlet; 5. Cover; 501. Elastic sealing ring; 6. Fan blade; 7. Scraper; 8. Transmission assembly; 9. Rotary drum; 10. First bevel gear; 11. Second bevel gear; 12. Connecting cylinder; 13. Connecting rod; 14. Sleeve; 1401. Connecting hole; 15. Nut. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 and Figure 5 This utility model provides a technical solution: a cleaning machine using liquid carbon dioxide dry ice, including a cleaning machine body 1 and a spray pipe 2 set on the cleaning machine body 1. A handle is installed on the outside of the spray pipe 2, and an air suction pipe 3 is set on the outside of the spray pipe 2. The air suction pipe 3 is connected to an external air suction device to provide continuous suction during the cleaning process. The outer sides of the nozzle 2 and the suction pipe 3 are fixed by the connecting sleeve 4 to ensure that they can move synchronously during operation and maintain structural consistency. A base is installed on the main body 1 of the cleaning machine to place the connecting sleeve 4. To further optimize the convenience of assembly and maintenance, nuts 15 are rotatably connected to the outer sides of the nozzle 2 and the suction pipe 3. The nuts 15 are threaded to the bottom of the connecting sleeve 4, so as to realize the detachable fixing of the nozzle 2 and the suction pipe 3 relative to the connecting sleeve 4, which facilitates the installation, debugging and later replacement of the components.

[0017] Specifically, such as Figure 2 As shown, the top of the connecting sleeve 4 is threaded with a cover 5. The cover 5 has a conical cylindrical structure and is made of transparent material. The cover 5 is made of transparent low-temperature resistant material, such as polycarbonate (PC). In order to facilitate real-time observation of the internal cleaning status, this type of material can still maintain good mechanical properties and transparency in the low-temperature environment of dry ice. An elastic sealing ring 501 is provided at the edge of the opening away from the connecting sleeve 4. The elastic sealing ring 501 can be made of low-temperature resistant silicone or rubber. Its function is to achieve better sealing when the cover 5 approaches the surface of the workpiece and to play a buffering role to prevent rigid collision.

[0018] Specifically, such as Figure 3 As shown, the connecting sleeve 4 has an air inlet 401. The cover 5 is centrally symmetrical about the nozzle 2. The diameter of the connection port between the cover 5 and the connecting sleeve 4 is relatively small. The inside of the connecting sleeve 4 needs to accommodate the nozzle 2 and the suction pipe 3 located on its side. In order to solve the problem of the flow channel conversion that the axial central airflow of the cover 5 needs to be efficiently introduced into the side-arranged suction pipe 3, the air inlet 401 is designed as an oblique channel. The air inlet 401 connects the inside of the cover 5 with the inside of the suction pipe 3. A fan blade 6 is provided at the air inlet of the suction pipe 3 located inside the connecting sleeve 4. A scraper 7 is provided on the inner wall of the cover 5. The air inlet 401 constitutes the only or main airflow channel between the internal cavity of the cover 5 and the inside of the suction pipe 3.

[0019] Specifically, such as Figure 4 As shown, the transmission assembly 8 is disposed between the fan blade 6 and the scraper 7, and is used to transmit the rotational motion of the fan blade 6 to the scraper 7 to drive it to scrape the inner wall of the cover 5. The transmission assembly 8 includes a rotating cylinder 9, which is installed on the outside of the fan blade 6. The bottom of the rotating cylinder 9 is rotatably connected to the suction end of the suction pipe 3, so that it is reliably supported in the airflow path. When the airflow passes through the fan blade 6, it drives it to rotate, thereby driving the rotating cylinder 9 to rotate together. The sleeve 14 is fixedly installed inside the connecting sleeve 4. The nozzle 2 passes through the connecting sleeve 4 and the sleeve 14 and extends into the inside of the cover 5. The top of the sleeve 14 is provided with a connecting hole 1401 corresponding to the air inlet position of the suction pipe 3. The first bevel gear 10 and the second bevel gear 11 are rotatably installed in the sleeve 14. The sleeve 14 provides a stable support environment for the first bevel gear 10 and the second bevel gear 11. The first bevel gear 10 is fixedly sleeved on the outside of the rotating drum 9, and the second bevel gear 11 is sleeved on the outside of the nozzle 2 through a bearing, thereby converting the rotation of the rotating drum 9 into the rotation of the second bevel gear 11. The connecting cylinder 12 is installed on the top of the second bevel gear 11 and is rotatably connected to the nozzle 2. The connecting cylinder 12 extends out of the connecting sleeve 4 and is located on the outside of the cover 5. A connecting rod 13 is installed thereon. The end of the connecting rod 13 is fixedly connected to the scraper 7, thereby converting the rotation of the second bevel gear 11 into the rotation of the scraper 7.

[0020] In summary, the working principle of the liquid carbon dioxide dry ice cleaning machine provided in this embodiment is as follows: During the cleaning operation, the cleaning machine body 1 and the external suction device connected to the suction pipe 3 are started. Dry ice particles are sprayed out at high speed from the nozzle at the front end of the nozzle 2, impacting the surface of the workpiece. The gaseous carbon dioxide formed after sublimation and the pollutants that are cleaned are confined in the sealed space formed by the cover 5. At the same time, the continuous negative pressure generated in the suction pipe 3 by the external suction device draws the mixed gas in the cover 5 into the suction pipe 3 through the air inlet 401 on the connecting sleeve 4. This directional airflow drives the fan blade 6 to rotate when it flows through the air inlet. The rotation of the fan blade 6 drives the rotating drum 9 to rotate, which in turn drives the second bevel gear 11 meshing with it through the first bevel gear 10 fixed on it, and finally transmits the power to the scraper 7 through the connecting cylinder 12 and the connecting rod 13, driving it to continuously rotate and scrape on the inner wall of the cover 5. The pollutants (including condensed water vapor or "snowflakes") swept off by the scraper 7 are promptly drawn into the suction pipe 3 under the action of the suction negative pressure, and are carried away and recycled along with the main airflow, thus keeping the inner wall of the cover 5 clean and transparent at all times.

[0021] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cleaning machine using liquid carbon dioxide dry ice, comprising a cleaning machine body (1) and a spray pipe (2) disposed on the cleaning machine body (1), characterized in that, Also includes: The suction pipe (3) is located on the outside of the nozzle (2) and is fixed to the outside of the nozzle (2) by a connecting sleeve (4); The cover (5) is threadedly installed on the top of the connecting sleeve (4). The connecting sleeve (4) has an air inlet (401) which connects the inside of the cover (5) with the inside of the suction pipe (3). The fan blade (6) is located at the air inlet inside the connecting sleeve (4) of the suction pipe (3); A scraper (7) is provided on the inner wall of the cover (5); A transmission assembly (8) is disposed between the fan blade (6) and the scraper (7) for transmitting the rotational motion of the fan blade (6) to the scraper (7) to drive it to scrape the inner wall of the cover (5).

2. The cleaning machine using liquid carbon dioxide dry ice according to claim 1, characterized in that, The transmission assembly (8) includes a rotating drum (9), which is installed on the outside of the fan blade (6), and the bottom of the rotating drum (9) is rotatably connected to the suction end of the suction pipe (3).

3. A cleaning machine using liquid carbon dioxide dry ice according to claim 2, characterized in that, The transmission assembly (8) also includes a sleeve (14), which is fixedly installed inside the connecting sleeve (4). The nozzle (2) extends through the connecting sleeve (4) and the sleeve (14) into the cover (5). The top of the sleeve (14) is provided with a connecting hole (1401) corresponding to the air inlet position of the suction pipe (3). A first bevel gear (10) and a second bevel gear (11) are rotatably installed in the sleeve (14). The first bevel gear (10) is fixedly sleeved on the outside of the rotating drum (9), and the second bevel gear (11) is sleeved on the outside of the nozzle (2) through a bearing.

4. A cleaning machine using liquid carbon dioxide dry ice according to claim 3, characterized in that, The transmission assembly (8) also includes a connecting cylinder (12), which is mounted on the top of the second bevel gear (11) and rotatably connected to the nozzle (2). The connecting cylinder (12) extends out of the connecting sleeve (4) and is located on the outside of the cover (5) with a connecting rod (13) installed. The end of the connecting rod (13) is fixedly connected to the scraper (7).

5. A cleaning machine using liquid carbon dioxide dry ice according to claim 1, characterized in that, Nuts (15) are rotatably connected to the outer sides of the nozzle (2) and the suction pipe (3), and the nuts (15) are threadedly connected to the bottom of the connecting sleeve (4).

6. A cleaning machine using liquid carbon dioxide dry ice according to claim 1, characterized in that, The cover (5) has a conical cylindrical structure and is made of transparent material. An elastic sealing ring (501) is provided at the edge of the opening away from the connecting sleeve (4).

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