Self-discharging structure for dust at air outlet of spiral vacuum pump

Abstract

The invention provides a self-discharging structure for dust at an air outlet of a spiral vacuum pump. The self-discharging structure comprises two rows of mutually engaged rotors, a powder scraping groove is formed in the surface of one side of the rotor close to the exhaust port. After the rotor rotates, the powder scraping groove rotates synchronously, dust attached to the position close to the air outlet is scraped in real time while rotating, and the dust is compressed and discharged through gas, so that the service life of the vacuum pump is prolonged by preventing the dust from being accumulated and blocked at the air outlet, and the operation efficiency and stability of the vacuum pump are improved. In addition, the dust removal structure does not need additional arrangement of a traditional filter screen or a cleaning device, energy loss and material loss of equipment in the aspect of dust removal are fully reduced, and the dust removal structure is more economical.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum pumps, and in particular to a dust self-removal structure at an air outlet of a spiral vacuum pump. Background Art

[0002] A spiral vacuum pump is an exhaust device that uses a pair of screws to rotate synchronously at high speed in opposite directions in the pump casing to produce suction and exhaust effects. During long-term operation, the air outlet of the vacuum pump is often blocked due to dust accumulation.

[0003] The existing processing methods include the following:

[0004] 1. Filter element type dust removal device, this type uses a filter element to filter at the air inlet to ensure the cleanliness of the internal environment of the vacuum pump, thereby reducing the risk of dust blockage at the air outlet, but this structure has the following disadvantages: Dependence on the performance of the filter material: The efficiency and performance of the filter element are limited by the selected filter material, and the filter element must be properly selected and maintained to ensure its long-term effective operation. Filtration resistance: High-efficiency filter elements may cause a certain amount of filtration resistance, which may require more energy to push air through the filter element, increasing the operating cost of the equipment. Ability to cope with special environments: For some special industrial environments, such as high temperature, high humidity or corrosive gases, the filter element may require special materials and designs to cope with, which may increase costs and technical difficulties.

[0005] 2. Nitrogen purge is used to remove dust. This method has the following disadvantages: Energy consumption: Energy is required to generate and use nitrogen, especially if a large amount of nitrogen is needed for cleaning, which will increase the corresponding energy cost. Cost: Compared with some other cleaning methods, such as chemical cleaners, the cost of nitrogen may be high, especially when used on a large scale or for a long time. Summary of the invention

[0006] The purpose of the present invention is to provide a dust self-removal structure for a spiral vacuum pump outlet which can realize dust self-removal without extra energy loss.

[0007] To achieve the above-mentioned purpose, the present invention proposes a self-exhausting structure for dust at the outlet of a spiral vacuum pump, comprising two rows of rotors meshing with each other; a powder scraping groove is provided on the surface of the rotor close to the exhaust port, and when dust is deposited at the exhaust end, the dust is scraped off through the powder scraping groove and discharged with the gas.

[0008] Furthermore, the powder scraping groove is an inwardly recessed groove on the surface of the rotor, and the groove starts from the edge of the rotor and extends toward the axis, so that convex scraping edges are formed on both sides of the groove.

[0009] Furthermore, a dynamic balancing structure is provided inside the powder scraping groove, which is a sunken area provided on the surface of the powder scraping groove to prevent deflection of the rotor during rotation.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] 1. Effective discharge: When dust is deposited at the exhaust end, the process materials attached to the exhaust port can be scraped off through the powder scraping groove and discharged through gas compression.

[0012] 2. Protect the vacuum pump: By preventing dust from accumulating and clogging at the air outlet, the service life of the vacuum pump can be extended and its operating efficiency and stability can be improved.

[0013] 3. Space saving: The integrated design with the rotor effectively saves the setting space. It is especially suitable for application scenarios with space restrictions. The integrated design not only saves space, but also helps to improve the overall efficiency of the system and the convenience of operation.

[0014] 4. Energy saving and economy: No need for traditional filters or cleaning devices, which fully reduces the energy loss or material loss of the equipment in dust removal, making it more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the dust self-removal structure at the air outlet of the spiral vacuum pump in an embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0017] like Figure 1 As shown, the present invention proposes a dust self-removal structure for the air outlet of a spiral vacuum pump, comprising two rows of rotors 1 that mesh with each other; a powder scraping groove is provided on the surface of the rotor 1 close to the exhaust port; after the rotor 1 rotates, the powder scraping groove scrapes off the dust attached to the vicinity of the air outlet in real time and discharges it through gas compression.

[0018] In this embodiment, if Figure 1 As shown, the scraping groove is a groove 2 that is recessed inward on the surface of the rotor 1 and is arranged on the surface of the rotor 1. It rotates with the rotor 1 to scrape off the dust near the air outlet in real time. The groove 2 starts from the edge of the rotor 1 and extends toward the axis, so that raised scraping edges are formed on both sides of the groove 2 to ensure the dust scraping effect.

[0019] In this embodiment, in order to ensure the dynamic balance of the rotor 1, a sinking area 3 of a certain size is provided on the surface of the groove 2 as required.

[0020] The dust self-removal structure of the spiral vacuum pump air outlet of the present invention has the following effects:

[0021] Groove design: A series of specific grooves 2 are designed on the end surface of the vacuum pump rotor 1. When the vacuum pump rotor 1 rotates, the grooves 2 rotate with the rotor 1. This allows the grooves 2 to form a scraping effect between the inner groove wall and the stationary part inside the pump, effectively scraping off the dust attached to the inner surface of the pump.

[0022] Automatic cleaning effect: Since the groove 2 is fixed on the rotor 1 and rotates with it, this design provides an automatic cleaning effect. Every time the rotor 1 runs, the groove 2 will regularly scrape away the dust inside the pump, thereby maintaining the performance and efficiency of the pump.

[0023] No need to apply additional energy: the cleaning feature is driven directly by the rotational inertia of the pump rotor 1 itself, and no additional gas or heat source heating is required for cleaning.

[0024] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A dust self-removal structure for the air outlet of a spiral vacuum pump, characterized in that: It includes two rows of intermeshing rotors; A powder scraping groove is provided on the surface of the rotor close to the exhaust port.

2. The dust self-removal structure of the spiral vacuum pump outlet according to claim 1, characterized in that: The powder scraping groove is a groove that is recessed inwardly on the surface of the rotor.

3. The dust self-removal structure of the spiral vacuum pump outlet according to claim 2 is characterized in that: The groove starts from the edge of the rotor and extends toward the axis, so that raised scraping edges are formed on both sides of the groove.

4. The dust self-removal structure at the air outlet of the spiral vacuum pump according to claim 1, characterized in that: A dynamic balancing structure is arranged inside the powder scraping groove.

5. The dust self-removal structure at the air outlet of the spiral vacuum pump according to claim 1, characterized in that: The dynamic balancing structure is to set a sinking area on the surface of the powder scraping groove.

6. The dust self-removal structure of the spiral vacuum pump outlet according to claim 1, characterized in that: After the rotor rotates, the dust scraping groove scrapes off the dust attached to the vicinity of the air outlet in real time and discharges it through gas compression.

Images