Filtering device suitable for high-speed centrifugal vacuum pump

Abstract

The utility model relates to the technical field of centrifugal pumps, in particular to a filtering device suitable for a high-speed centrifugal vacuum pump, which comprises a high-speed centrifugal vacuum pump body, an air filtering mechanism is arranged at an input port of the high-speed centrifugal vacuum pump body, and the air filtering mechanism comprises an outer protective shell, a butt joint seat, a reducing sleeve and a filter element assembly. According to the high-speed centrifugal vacuum pump, the defects in the prior art are overcome, a medium which is about to enter the input port of the high-speed centrifugal vacuum pump body can be filtered through the air filtering mechanism arranged at the input port of the high-speed centrifugal vacuum pump body, and the medium can enter the outer protective shell through the first ventilation opening; and finally, the air enters the high-speed centrifugal vacuum pump body to be conveyed, impurities carried by the air are filtered out, and the situation that the normal operation of the high-speed centrifugal vacuum pump body is influenced by the increase of the resistance of an internal channel of the high-speed centrifugal vacuum pump body caused by impurity accumulation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a filtering device suitable for a high-speed centrifugal vacuum pump. Background Art

[0002] A centrifugal vacuum pump is a device that uses the principle of centrifugal force to throw gas from the center to the surroundings, thereby forming a negative pressure in the pump to achieve the purpose of extracting gas. Its working principle is that when the impeller rotates clockwise, the water in the pump body is driven by the impeller to rotate together, and under the action of centrifugal force, it is thrown from the center of the impeller to the outer edge along the flow channel between the blades. In this process, a certain vacuum is formed in the center of the impeller, and the medium is sucked into the pump from the suction pipe, and then discharged through the pump outlet;

[0003] The medium that enters the pump body through the suction pipe during the operation of the pump body can directly affect the operating efficiency of the pump. If the medium contains a lot of impurities, the impurities may block the inlet and outlet pipes of the pump, affecting the normal operation of the pump. At the same time, the impurities may contain particles. These particles will cause wear to the pump's impeller, bearings and other parts during the operation of the pump, reducing the service life of the pump;

[0004] In order to solve the above problems, a filtering device suitable for a high-speed centrifugal vacuum pump is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the utility model provides a filtering device suitable for a high-speed centrifugal vacuum pump, which overcomes the deficiencies of the prior art and solves the problems mentioned in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a filtering device suitable for a high-speed centrifugal vacuum pump, comprising a high-speed centrifugal vacuum pump body, wherein an air filtering mechanism is provided at the input port of the high-speed centrifugal vacuum pump body;

[0007] The air filtering mechanism comprises an outer protective shell, a docking seat, an adapter sleeve and a filter element assembly, the left and right ends of the outer protective shell are rotatably connected to the adapter sleeve and the docking seat respectively, and the outer protective shell, the docking seat and the adapter sleeve are concentrically arranged;

[0008] The adapter sleeve is connected with an end cover, a second vent is provided through the surface of the end cover, and a spare filter assembly is installed on the inner side of the end cover.

[0009] By configuring the air filter mechanism at the input port of the high-speed centrifugal vacuum pump body, the medium that is about to enter the input port of the high-speed centrifugal vacuum pump body can be filtered, and the impurities carried by it can be filtered out, so as to avoid the increase of the internal channel resistance of the high-speed centrifugal vacuum pump body due to the accumulation of impurities, which may affect the normal operation of the high-speed centrifugal vacuum pump body. At the same time, the spare filter component arranged on the end cover can be opened when the filter element is subsequently cleaned and replaced. The spare filter component can be used to filter the medium when the filter element is cleaned and replaced, so as to ensure that the impurities carried by the medium flowing through the high-speed centrifugal vacuum pump body are filtered.

[0010] As a preferred technical solution of the utility model, a plurality of ventilation openings 1 are provided through the outer circumferential surface of the outer protective shell, and the plurality of ventilation openings 1 are arranged circumferentially at equal intervals with the outer protective shell as the axis.

[0011] The vents are arranged so that the medium can be filtered in multiple directions, thereby improving the coverage of the medium filtration.

[0012] As a preferred technical solution of the utility model, a sealing ring is installed on the side of the docking seat away from the outer protective shell, a pair of anti-slip toothed belts are symmetrically fixedly installed on the outer surface of the outer protective shell, and a number of cleaning brushes are fixedly installed on the inner circumferential surface of the outer protective shell. The several cleaning brushes are arranged equidistantly around the outer protective shell as the axis.

[0013] The docking seat can be docked with the high-speed centrifugal vacuum pump body, and the cleaning brush can be driven to remove impurities covered on the outer surface of the filter screen 2 inside the outer protective shell during the rotation of the outer protective shell.

[0014] As a preferred technical solution of the utility model, the filter element assembly is composed of a second filter screen and an activated carbon filter element.

[0015] The impurities carried in the medium can be efficiently filtered through the filter screen 2 and the activated carbon filter element, reducing the interference of the impurities carried in the medium on the high-speed centrifugal vacuum pump body.

[0016] As a preferred technical solution of the utility model, the end cover is adapted to the size and position of the adapter sleeve, and an annular assembly seat 1 and an annular assembly seat 2 are formed on the inner side of the end cover in sequence, an assembly cavity is formed between the annular assembly seat 1 and the annular assembly seat 2, the annular assembly seat 1 is adapted to the structural size and position of the filter screen 2, and the assembly cavity is adapted to the structural size and position of the activated carbon filter element.

[0017] As a preferred technical solution of the utility model, the spare filter assembly includes an air filter cartridge and a filter screen installed inside the air filter cartridge, a connecting joint is formed at one end of the air filter cartridge, the air filter cartridge is rotatably connected to an annular assembly seat through the connecting joint, and an air inlet is penetrated through the connecting joint, and a plurality of air outlets are penetrated through the outer surface of the air filter cartridge, and the plurality of air outlets are arranged in a circle with equal intervals around the air filter cartridge as the axis.

[0018] By rotating the air filter cartridge, the air inlet and the second vent can be overlapped, so that when the filter net 2 and the activated carbon filter element are replaced, the external medium can be transported into the air filter cartridge by utilizing the overlap of the air inlet and the second vent, and can be filtered by utilizing the air outlet inside the air filter cartridge.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] By configuring the air filtering mechanism at the input port of the high-speed centrifugal vacuum pump body, the medium that is about to enter the input port of the high-speed centrifugal vacuum pump body can be filtered. The medium can enter the outer protective shell through the vent one, and be filtered through the filter screen two and the activated carbon filter element in turn, and finally enter the high-speed centrifugal vacuum pump body for transportation to filter out the impurities it carries, so as to avoid the increase of the internal channel resistance of the high-speed centrifugal vacuum pump body due to the accumulation of impurities, which may affect the normal operation of the high-speed centrifugal vacuum pump body. By rotating the air filter cartridge, the air inlet and the vent two can be overlapped, so that when the filter screen two and the activated carbon filter element are replaced, the air inlet and the vent two can be overlapped to transport the external medium to the inside of the air filter cartridge, and the air outlet inside the air filter cartridge can be used to filter the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the assembly of the outer protective shell of the utility model;

[0023] Figure 3 The partial cross-section diagram of the outer protective shell of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 4 The partial cross-section diagram of the outer protective shell of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 5 It is a partial cross-sectional assembly diagram of the end cover of the utility model;

[0026] Figure 6 It is a schematic diagram of the air filter cartridge of the utility model.

[0027] In the figure: 1. high-speed centrifugal vacuum pump body; 2. outer protective shell; 201. vent 1; 202. cleaning brush; 203. anti-slip toothed belt; 3. docking seat; 301. sealing ring; 4. adapter sleeve; 5. end cover; 501. annular assembly seat 1; 502. annular assembly seat 2; 503. vent 2; 504. assembly cavity; 6. air filter cartridge; 601. air inlet; 602. air outlet; 603. filter screen 1; 7. filter screen 2; 8. activated carbon filter element. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-6 A filtering device suitable for a high-speed centrifugal vacuum pump comprises a high-speed centrifugal vacuum pump body 1, an air filtering mechanism is arranged at the input port of the high-speed centrifugal vacuum pump body 1, the air filtering mechanism comprises an outer protective shell 2, a docking seat 3, an adapter sleeve 4 and a filter element assembly, the left and right ends of the outer protective shell 2 are rotatably connected with the adapter sleeve 4 and the docking seat 3 respectively, the outer protective shell 2, the docking seat 3 and the adapter sleeve 4 are concentrically arranged, an end cover 5 is arranged on the adapter sleeve 4, a vent 2 503 is opened through the surface of the end cover 5, a spare filter assembly is arranged on the inner side of the end cover 5, and a filter element assembly is arranged on the high-speed centrifugal vacuum pump body 1. The air filtering mechanism at the input port of the pump body 1 can filter the medium that is about to enter the input port of the high-speed centrifugal vacuum pump body 1, and filter out the impurities it carries, so as to avoid the increase of the internal channel resistance of the high-speed centrifugal vacuum pump body 1 due to the accumulation of impurities, which may affect the normal operation of the high-speed centrifugal vacuum pump body 1. At the same time, the spare filter assembly arranged on the end cover 5 can be opened when the filter element is subsequently cleaned and replaced. The spare filter assembly can filter the medium when the filter element is cleaned and replaced, thereby ensuring that the impurities carried by the medium flowing through the high-speed centrifugal vacuum pump body 1 are filtered.

[0030] Specifically, a plurality of ventilation holes 201 are formed through the outer circumferential surface of the outer protective shell 2, and the plurality of ventilation holes 201 are arranged circumferentially with equal intervals around the outer protective shell 2 as the axis. The provided ventilation holes 201 can filter the medium in multiple directions, thereby improving the coverage of the medium filtration.

[0031] Specifically, a sealing ring 301 is arranged on the side of the docking seat 3 away from the outer protective shell 2, a pair of anti-slip toothed belts 203 are symmetrically fixedly installed on the outer surface of the outer protective shell 2, and a plurality of cleaning brushes 202 are fixedly installed on the inner circumferential surface of the outer protective shell 2. The plurality of cleaning brushes 202 are arranged in a circle with equal intervals around the outer protective shell 2 as the axis. The docking seat 3 can be docked with the high-speed centrifugal vacuum pump body 1 through the arranged docking seat 3, and the cleaning brush 202 can be driven to remove impurities covered on the outer surface of the filter screen 7 inside the outer protective shell 2 during the rotation of the outer protective shell 2.

[0032] Specifically, the filter element assembly is composed of a filter mesh 7 and an activated carbon filter element 8. The filter mesh 7 and the activated carbon filter element 8 can efficiently filter impurities carried in the medium, thereby reducing the interference of impurities carried in the medium on the high-speed centrifugal vacuum pump body 1.

[0033] Specifically, the end cover 5 is adapted to the adapter sleeve 4 in terms of size and position, an annular assembly seat 1 501 and an annular assembly seat 2 502 are formed on the inner side of the end cover 5 in sequence, an assembly cavity 504 is formed between the annular assembly seat 1 501 and the annular assembly seat 2 502, the annular assembly seat 1 501 is adapted to the filter screen 2 7 in terms of size and position, and the assembly cavity 504 is adapted to the activated carbon filter element 8 in terms of size and position.

[0034] Specifically, the spare filter assembly includes an air filter cartridge 6 and a filter screen 603 installed inside the air filter cartridge 6. An adapter joint is formed at one end of the air filter cartridge 6. The air filter cartridge 6 is rotatably connected to the annular assembly seat 502 through the adapter joint, and an air inlet 601 is penetrated through the adapter joint. A plurality of air outlets 602 are penetrated through the outer surface of the air filter cartridge 6. The plurality of air outlets 602 are arranged in a circle with equal intervals around the air filter cartridge 6 as the axis. By rotating the air filter cartridge 6, the air inlet 601 and the vent 503 can be overlapped, so that when the filter screen 7 and the activated carbon filter element 8 are replaced, the external medium can be transported to the inside of the air filter cartridge 6 by overlapping the air inlet 601 and the vent 503, and can be filtered by means of the air outlet 602 inside the air filter cartridge 6.

[0035] Working principle: The air filter mechanism disposed at the input port of the high-speed centrifugal vacuum pump body 1 can filter the medium that is about to enter the input port of the high-speed centrifugal vacuum pump body 1, and the medium can enter the outer protective shell 2 through the vent 1 201, and pass through the filter screen 2 7 and the activated carbon filter element 8 in turn for filtration, and finally enter the high-speed centrifugal vacuum pump body 1 for transportation, and filter out the impurities it carries, so as to avoid the increase of the internal channel resistance of the high-speed centrifugal vacuum pump body 1 due to the accumulation of impurities, which affects the normal operation of the high-speed centrifugal vacuum pump body 1, and can be docked with the high-speed centrifugal vacuum pump body 1 through the provided docking seat 3, and can drive the cleaning brush 202 in the process of rotating the outer protective shell 2 through the cleaning brush 202. It is used to remove impurities covered on the outer surface of the filter screen 2 7 inside the outer protective shell 2. At the same time, the spare filter assembly arranged on the end cover 5 can achieve the overlap between the air inlet 601 and the vent 2 503 by rotating the air filter cartridge 6 when the filter element is cleaned and replaced later. Therefore, when the filter screen 2 7 and the activated carbon filter element 8 are replaced, the external medium can be transported to the inside of the air filter cartridge 6 by utilizing the overlap of the air inlet 601 and the vent 2 503, and can be filtered by means of the air outlet 602 inside the air filter cartridge 6. The spare filter assembly can filter the medium when the filter element is cleaned and replaced, thereby ensuring that the impurities carried by the medium flowing through the high-speed centrifugal vacuum pump body 1 are filtered.

[0036] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A filtering device suitable for a high-speed centrifugal vacuum pump, comprising a high-speed centrifugal vacuum pump body (1), characterized in that: An air filtering mechanism is provided at the input port of the high-speed centrifugal vacuum pump body (1); The air filtering mechanism comprises an outer protective shell (2), a docking seat (3), an adapter sleeve (4) and a filter element assembly; The adapter sleeve (4) is connected to an end cover (5), a second vent (503) is provided through the surface of the end cover (5), and a spare filter assembly is installed on the inner side of the end cover (5); The left and right ends of the outer protective shell (2) are rotatably connected to the adapter sleeve (4) and the docking seat (3) respectively, and the outer protective shell (2), the docking seat (3) and the adapter sleeve (4) are concentrically arranged; The filter element assembly is composed of a second filter screen (7) and an activated carbon filter element (8); The end cover (5) is adapted to the adapter sleeve (4) in terms of size and position, and an annular assembly seat 1 (501) and an annular assembly seat 2 (502) are sequentially formed on the inner side of the end cover (5); An assembly cavity (504) is formed between the annular assembly seat 1 (501) and the annular assembly seat 2 (502); the annular assembly seat 1 (501) is adapted to the structural dimensions and position of the filter screen 2 (7); and the assembly cavity (504) is adapted to the structural dimensions and position of the activated carbon filter element (8).

2. A filtering device suitable for a high-speed centrifugal vacuum pump according to claim 1, characterized in that: The outer circumferential surface of the outer protective shell (2) is penetrated by a plurality of ventilation openings (201), and the plurality of ventilation openings (201) are arranged in a circumferential arrangement at equal intervals with the outer protective shell (2) as the axis.

3. A filtering device suitable for a high-speed centrifugal vacuum pump according to claim 1, characterized in that: A sealing ring (301) is arranged on the side of the docking seat (3) away from the outer protective shell (2), a pair of anti-slip toothed belts (203) are symmetrically fixedly installed on the outer surface of the outer protective shell (2), and a plurality of cleaning brushes (202) are fixedly installed on the inner circumferential surface of the outer protective shell (2), and the plurality of cleaning brushes (202) are arranged circumferentially at equal intervals with the outer protective shell (2) as the axis.

4. A filtering device suitable for a high-speed centrifugal vacuum pump according to claim 1, characterized in that: The spare filter assembly comprises an air filter cartridge (6) and a filter screen (603) installed inside the air filter cartridge (6).

5. A filtering device suitable for a high-speed centrifugal vacuum pump according to claim 4, characterized in that: An adapter joint is formed at one end of the air filter cartridge (6), and the air filter cartridge (6) is rotatably connected to the second annular assembly seat (502) via the adapter joint, and an air inlet (601) is formed through the adapter joint.

6. A filtering device suitable for a high-speed centrifugal vacuum pump according to claim 4, characterized in that: The outer surface of the air filter cartridge (6) is provided with a plurality of air outlets (602) extending therethrough, and the plurality of air outlets (602) are arranged in a circumferential arrangement at equal intervals with the air filter cartridge (6) as the axis.

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