Cycloid rotor pump

Abstract

The utility model relates to the technical field of cycloid rotor pumps, in particular to a cycloid rotor pump which comprises a motor body and a base fixedly installed below the motor body, a first cavity and a plurality of first installation holes are formed in the side wall of the motor body, an anti-abrasion assembly for reducing abrasion and vibration is arranged on the first cavity, and a plurality of second installation holes are formed in the base. A filter screen is arranged on a liquid inlet groove, external liquid can be filtered, particulate matter is prevented from entering an inner cavity of the rotor pump, and therefore abrasion of an inner rotor and an outer rotor is aggravated, under cooperation of a spring, the filter screen, a fixing groove, a supporting plate and a cleaning rod, the filter screen is cleaned, the particulate matter is squeezed into a liquid inlet bin, and the cleaning effect is improved. And the cleaning rod is provided with the liquid inlet hole, so that the liquid inlet of the rotor pump is not influenced while the filter screen is cleaned, the working efficiency of the rotor pump is not influenced, and particulate matters in the liquid can be prevented from entering the first cavity, so that the abrasion between the inner rotor and the outer rotor is aggravated, and the service life of the rotor pump is shortened.

Description

Technical Field

[0001] This utility model relates to the field of cycloidal rotor pump technology, and in particular to a cycloidal rotor pump. Background Technology

[0002] A cycloidal rotor pump is a type of internal gear pump with a special tooth profile. It boasts advantages such as simple structure, compact size, low noise, smooth operation, and good speed performance. Its disadvantages include large flow pulsation and high machining precision requirements. A cycloidal rotor pump consists of a pair of internally meshing rotors, a pump casing, and a pump cover. The inner rotor is an external gear with an epicycloid tooth profile, while the outer rotor is an internal gear with a circular arc tooth profile. The cycloidal rotor pump is an internally meshing positive displacement pump based on a cycloidal tooth profile design. Fluid transport is achieved through the non-contact meshing of the inner and outer rotors. The rotation centers of the inner and outer rotors are different, with an eccentricity e between them. Typically, the inner rotor has 8 or 10 teeth, while the outer rotor has one more tooth than the inner rotor.

[0003] Existing cycloidal rotor pumps have good self-priming capabilities, large flow rates, simple structures, and are easy to maintain. However, they cannot screen the liquid during inlet, which may cause particulate impurities in the liquid to enter the rotor pump, further aggravating the wear between the inner and outer rotors and thus reducing the service life of the rotor pump. Summary of the Invention

[0004] The main objective of this invention is to provide a cycloidal rotor pump, which aims to solve the technical problems in the prior art.

[0005] This utility model proposes a cycloidal rotor pump, comprising: an electric motor body and a base fixedly installed under the electric motor body. The side wall of the electric motor body is provided with a first chamber and a plurality of first mounting holes. The first chamber is provided with an anti-wear component to reduce wear and vibration. The side wall of the electric motor body is provided with an isolation sealing component to prevent liquid leakage. A filter component for filtering liquid is provided on one side of the electric motor body. A cleaning component for cleaning the filter screen is provided at one end of the filter component.

[0006] Preferably, the wear-resistant component includes a bearing fixedly mounted on the output end of the motor body, a flat key fixedly mounted on the axial side wall of the bearing, a wear-resistant rubber pad provided on the outer wall of the first chamber, an inner rotor snapped onto the axial side wall of the bearing, an outer rotor meshing with a gear on the outer wall of the inner rotor, and the outer rotor rotating with the wear-resistant rubber pad.

[0007] Preferably, the isolation and sealing assembly includes a sealing rubber ring bonded to the side wall of the motor body, and a pump body is provided on one side of the motor body, with an installation groove and several second installation holes on the pump body.

[0008] Preferably, the filter assembly includes an outlet liquid chamber and an inlet liquid chamber formed on the pump body. A liquid distribution plate is connected to the pump body by screws. The liquid distribution plate has an outlet liquid groove and an inlet liquid groove. A baffle is fixedly installed on the liquid distribution plate. The baffle has four fixing grooves. A filter screen is slidably installed between the four fixing grooves. A spring is provided between the filter screen and the fixing grooves.

[0009] Preferably, the cleaning assembly includes a support plate fixedly installed on the baffle, and a plurality of cleaning rods are fixedly installed on the side wall of the support plate, each of the cleaning rods having a liquid inlet hole.

[0010] Preferably, both the inner teeth of the outer rotor and the outer teeth of the inner rotor are arc-shaped.

[0011] Preferably, the size and position of the sealing rubber ring match the size and position of the mounting groove.

[0012] Preferably, the size and position of the cleaning rod match the size and position of the filter mesh holes.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The filter screen is installed on the liquid inlet tank to filter the incoming liquid and prevent particulate matter from entering the inner cavity of the rotor pump, thereby aggravating the wear of the inner and outer rotors. With the cooperation of spring, filter screen, fixing groove, support plate and cleaning rod, the filter screen is cleaned, and the particulate matter is squeezed into the liquid inlet chamber. Since the cleaning rod has a liquid inlet hole, the liquid inlet of the rotor pump will not be affected while cleaning the filter screen, so as not to affect the working efficiency of the rotor pump. It can also prevent particulate matter in the liquid from entering the first chamber, thereby aggravating the wear between the inner and outer rotors and reducing the service life of the rotor pump.

[0015] 2. The inner teeth of the outer rotor are arc-shaped, and the outer teeth of the inner rotor are also arc-shaped. This design allows the inner and outer rotors to form line contact when meshing, which increases the contact area and reduces friction damage, thereby increasing the service life of the rotor pump. In addition, the mutual rotation of the outer rotor and the wear-resistant rubber pad not only reduces the wear of the outer rotor, but also reduces the vibration caused by the rotation of the outer rotor, further extending the service life of the outer rotor and reducing the vibration and noise caused by the rotor pump.

[0016] 3. Then insert the pump body into the bearing, so that the pump body and the motor body come into contact, and the sealing rubber ring enters the mounting groove, thereby preventing liquid leakage during the operation of the rotor pump. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the anti-wear component structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the isolation and sealing assembly and the filter assembly of this utility model.

[0020] Figure 4 This is a partial structural diagram of the filter assembly of this utility model.

[0021] Figure 5 This is a cross-sectional view of the cleaning component of this utility model.

[0022] Figure 6 This utility model Figure 5 Enlarged view of section A in the middle.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0024] 1. Motor body; 11. Base; 12. First chamber; 13. First mounting hole; 2. Anti-wear component; 3. Isolation and sealing component; 4. Filter component; 5. Cleaning component; 21. Bearing; 22. Flat key; 23. Wear-resistant rubber pad; 24. Inner rotor; 25. Outer rotor; 31. Sealing rubber ring; 32. Pump body; 33. Mounting groove; 34. Second mounting hole; 41. Liquid outlet chamber; 42. Liquid inlet chamber; 43. Screw; 44. Liquid distribution tray; 45. Liquid outlet tank; 46. Liquid inlet tank; 47. Baffle; 48. Fixing groove; 49. Filter screen; 401. Spring; 51. Support plate; 52. Cleaning rod; 53. Liquid inlet hole. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] like Figures 1-6As shown, this application provides a method for a cycloidal rotor pump, including: a motor body 1 and a base 11 fixedly installed under the motor body 1. A first chamber 12 and a plurality of first mounting holes 13 are provided on the side wall of the motor body 1. An anti-wear component 2 for reducing wear and vibration is provided on the first chamber 12. An isolation sealing component 3 for preventing liquid leakage is provided on the side wall of the motor body 1. The isolation sealing component 3 can prevent liquid leakage during the operation of the cycloidal rotor pump. A filter component 4 for filtering liquid is provided on one side of the motor body 1. The filter component 4 can filter out particulate matter in the liquid, preventing particulate matter from entering the cycloidal rotor pump and increasing wear between them. A cleaning component 5 for cleaning the filter screen is provided at one end of the filter component 4. The cleaning component 5 can clean the filter screen, preventing the filter screen from becoming clogged and preventing liquid from entering.

[0027] The wear-resistant component 2 includes a bearing 21 fixedly installed on the output end of the motor body 1. A flat key 22 is fixedly installed on the axial side wall of the bearing 21. A wear-resistant rubber pad 23 is provided on the outer wall of the first chamber 12. An inner rotor 24 is snapped onto the axial side wall of the bearing 21. An outer rotor 25 is meshed with a gear on the outer wall of the inner rotor 24. The outer rotor 25 rotates with the wear-resistant rubber pad 23. The wear-resistant rubber pad 23 can not only reduce the wear of the outer rotor 25, but also reduce the vibration caused by the rotation of the outer rotor 25.

[0028] The isolation and sealing assembly 3 includes a sealing rubber ring 31 bonded to the side wall of the motor body 1. A pump body 32 is provided on one side of the motor body 1. The pump body 32 has an installation groove 33 and several second installation holes 34.

[0029] The filter assembly 4 includes an outlet liquid chamber 41 and an inlet liquid chamber 42 formed on the pump body 32. A liquid distribution plate 44 is threadedly connected to the pump body 32 by screws 43. The liquid distribution plate 44 has an outlet liquid groove 45 and an inlet liquid groove 46. A baffle 47 is fixedly installed on the liquid distribution plate 44. The baffle 47 has four fixing grooves 48. A filter screen 49 is slidably installed between the four fixing grooves 48. A spring 401 is provided between the filter screen 49 and the fixing grooves 48. The strength of the spring 401 will not be compressed during normal liquid inlet process. However, when the filter screen 49 is full of particles, it will squeeze the spring 401, causing the filter screen 49 to slide on the fixing grooves 48.

[0030] The cleaning assembly 5 includes a support plate 51 fixedly installed on the baffle 47. Several cleaning rods 52 are fixedly installed on the side wall of the support plate 51, and each of the cleaning rods 52 has a liquid inlet hole 53.

[0031] Both the internal teeth of the outer rotor 25 and the external teeth of the inner rotor 24 are arc-shaped. This design makes the tooth profiles make line contact, which greatly increases the contact area and reduces wear.

[0032] The size and position of the sealing rubber ring 31 match the size and position of the mounting groove 33. After the pump body 32 and the motor body 1 are connected by bolts, the sealing rubber ring 31 just enters the mounting groove 33, thereby increasing the sealing performance of the rotor pump and preventing liquid leakage during the liquid inlet and outlet process.

[0033] The size and position of the cleaning rod 52 are matched with the size and position of the holes in the filter screen 49. When the filter screen 49 compresses the spring 401, the filter screen 49 slides backward, so that the cleaning rod 52 enters the holes in the filter screen 49, which can clean the filter screen 49 and prevent the filter screen 49 from being blocked and affecting the liquid intake efficiency.

[0034] The technical principle of this utility model is as follows: the inner teeth of the outer rotor 25 are arc-shaped and the outer teeth of the inner rotor 24 are also arc-shaped. This design allows the inner and outer rotors to form line contact when meshing, which increases the contact area and reduces friction damage, thereby increasing the service life of the rotor pump. Moreover, the outer rotor 25 and the wear-resistant rubber pad 23 rotate relative to each other, which not only reduces the wear of the outer rotor 25, but also reduces the vibration caused by the rotation of the outer rotor 25, further extending the service life of the outer rotor 25.

[0035] Then, the pump body 32 is inserted into the bearing 21, so that the pump body 32 and the motor body 1 come into contact, and the sealing rubber ring 31 enters the mounting groove 33, thereby preventing liquid leakage during the operation of the rotor pump.

[0036] The filter screen 49 is installed on the liquid inlet tank 46 to filter the incoming liquid. The spring 401 on the fixed tank 48 has a certain elasticity and can not be compressed under normal operation, preventing particulate matter from entering the inner cavity of the rotor pump and thus aggravating the wear of the inner and outer rotors. After a period of use, some particulate matter may be adsorbed on the filter screen 49. At this time, the spring 401 cannot withstand such pressure and will be compressed. This will cause the filter screen 49 to slide on the fixed tank 48. When it slides to a certain position, the cleaning rod 52 on the support plate 51 will enter the hole of the filter screen 49. Because the outer wall size of the cleaning rod 52 and the... If the filter screen 49 has uniformly sized holes, it will be cleaned, causing particles to be squeezed into the liquid inlet chamber 42. Since the cleaning rod 52 has a liquid inlet hole 53, cleaning the filter screen 49 will not affect the liquid inlet of the rotor pump, thus not affecting the working efficiency of the rotor pump. It also prevents particles in the liquid from entering the first chamber 12, thereby aggravating the wear between the inner and outer rotors and reducing the service life of the rotor pump. In addition, when the work is completed, the liquid distribution plate 44 can be disassembled by screws and bolts 43, thereby cleaning the particulate impurities in the liquid inlet chamber 42 in one go.

[0037] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, apparatus, article, or method. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, apparatus, article, or method that includes that element.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A gerotor pump, characterized by, Include: Electric motor body (1) and fixedly installed in the base (11) under the electric motor body (1), the side wall of the electric motor body (1) is provided with first cavity (12) and a plurality of first mounting hole (13), the first cavity (12) is provided with anti-abrasion assembly (2) that reduces abrasion and vibration, the side wall of the electric motor body (1) is provided with isolation sealing assembly (3) that prevents liquid leakage, one side of the electric motor body (1) is provided with filter assembly (4) that filters liquid, one end of the filter assembly (4) is provided with cleaning assembly (5) that cleans filter screen.

2. A gerotor pump according to claim 1, characterised in that The anti-abrasion assembly (2) includes a bearing (21) fixedly installed on the output end of the electric motor body (1), the axial side wall of the bearing (21) is fixedly installed with a flat key (22), the outer wall of the first cavity (12) is provided with a wear-resistant rubber pad (23), the axial side wall of the bearing (21) is connected with an inner rotor (24) through clamping connection, the outer wall of the inner rotor (24) is connected with an outer rotor (25) through gear meshing, and the outer rotor (25) rotates with the wear-resistant rubber pad (23).

3. A gerotor pump according to claim 1, wherein The isolation sealing assembly (3) includes a sealing rubber ring (31) adhesively connected to the side wall of the electric motor body (1), the side of the electric motor body (1) is provided with a pump body (32), the pump body (32) is provided with a mounting groove (33) and a plurality of second mounting holes (34).

4. A gerotor pump according to claim 3, characterised in that The filter assembly (4) includes a liquid outlet bin (41) and a liquid inlet bin (42) formed in the pump body (32), the pump body (32) is threadedly connected with a liquid distribution disc (44) through a screw (43), the liquid distribution disc (44) is provided with a liquid outlet groove (45) and a liquid inlet groove (46), the liquid distribution disc (44) is fixedly installed with a baffle (47), the baffle (47) is provided with four fixed grooves (48), and the filter screen (49) is slidably installed between the four fixed grooves (48), and the filter screen (49) and the fixed grooves (48) are provided with springs (401).

5. A gerotor pump according to claim 4, characterised in that The cleaning assembly (5) includes a support plate (51) fixedly installed on the baffle (47), a plurality of cleaning rods (52) are fixedly installed on the side wall of the support plate (51), and a plurality of liquid inlet holes (53) are formed in the cleaning rods (52).

6. A gerotor pump according to claim 2, wherein The inner teeth of the outer rotor (25) and the outer teeth of the inner rotor (24) are arc-shaped.

7. A gerotor pump according to claim 3, wherein The size and position of the sealing rubber ring (31) are consistent with the size and position of the mounting groove (33).

8. A gerotor pump according to claim 5, wherein The size and position of the cleaning rod (52) are consistent with the size and position of the filter screen (49) hole. The inner teeth of the outer rotor (25) and the outer teeth of the inner rotor (24) are arc-shaped.

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