Rotor pump

Abstract

The utility model discloses a rotor pump which comprises a shell, a front end cover, a rear end cover, a first rotor and a second rotor, and the shell comprises an upper shell body and a lower shell body. The first rotor is arranged in the lower shell, and the second rotor is arranged in the upper shell; the inner cavity of the lower shell is divided into two volume cavities which are not communicated by the first rotor; the lower shell is provided with two feed ports and two first discharge ports; the first volume cavity is respectively communicated with the feed port and the first discharge port on the same side, and each feed port and each first discharge port are respectively communicated with the volume cavity on the same side; and the upper shell is provided with two second discharge holes. The rotor pump is simple in structure, two-stage pressurization can be achieved, and the material conveying efficiency is improved; in addition, the method has a wider application occasion.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid machinery, and particularly relates to a rotor pump. Background Art

[0002] The working volume is changed through the relative movement between the rotor and the pump body, so as to realize the pressurization of the fluid. Although the rotor pump in the prior art is provided with two rotors, it can only achieve first-stage pressurization, and the efficiency is relatively low. In view of the above technical problems, the utility model provides a new rotor pump, which can achieve two-stage pressurization on the basis of ensuring the simple structure of the rotor pump, and improve the fluid transportation efficiency.

[0003] It can be seen that the prior art still needs to be improved and enhanced. Summary of the Utility Model

[0004] In view of the deficiencies of the above prior art, the purpose of the utility model is to provide a rotor pump, aiming to solve the technical problem that the rotor pump in the prior art can only achieve first-stage pressurization and has low efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A rotor pump includes a housing, a front end cover, a rear end cover, a first rotor and a second rotor. The housing includes an upper housing and a lower housing; the first rotor is arranged in the lower housing, and the second rotor is arranged in the upper housing; the first rotor divides the inner cavity of the lower housing into two non-communicating volume chambers; the lower housing is provided with two feed ports and two first discharge ports; the first volume chamber is respectively communicated with the feed port and the first discharge port on the same side, and each feed port and the first discharge port are respectively communicated with the volume chamber on the same side; the upper housing is provided with two second discharge ports.

[0007] Further, in the rotor pump, a plurality of scrapers are arranged on the first rotor, and springs are respectively arranged between each scraper and the rotor in the radial direction.

[0008] Further, in the rotor pump, the scrapers are arranged at the same intervals in the circumferential direction of the first rotor.

[0009] Further, in the rotor pump, each scraper respectively includes a blade body and a blade seat, and the blade seat is provided with a spring mounting hole.

[0010] Further, in the rotor pump, two blades are symmetrically arranged on the blade body.

[0011] Further, in the rotor pump, a plurality of grooves are formed in the side wall of the second rotor in the circumferential direction.

[0012] Beneficial effects: The present utility model provides a rotor pump. Compared with the prior art, the rotor pump provided by the present utility model has a simple structure and can achieve two-stage pressurization, improving the material conveying efficiency. In addition, due to the provision of two feed ports, two volume chambers and two first discharge ports, the application scenarios of the rotor pump are improved. Description of the Drawings

[0013] Figure 1 is a three-dimensional view of the rotor pump provided by the present utility model Figure 1 .

[0014] Figure 2 is a three-dimensional view of the rotor pump provided by the present utility model Figure 2 , and the cover plate is not drawn in the figure.

[0015] Figure 3 is a front view of the rotor pump provided by the present utility model, and the cover plate is not drawn in the figure.

[0016] Figure 4 is a three-dimensional view of the rear end cover of the housing.

[0017] Figure 5 is a three-dimensional view of the scraper.

[0018] Figure 6 is a three-dimensional view of the second rotor. Detailed Embodiments

[0019] The present utility model provides a rotor pump. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Please refer to Figures 1 to 6 , the present utility model provides a rotor pump. The drawings are only used to explain the structural principle and are not in proportion to the actual product. The drawings only show the structures related to the inventive points of the present application, and some conventional structures are not specifically shown. For the convenience of observation, Figure 2 and Figure 3 the front end cover 91 is not drawn.

[0021] The terms "first", "second", etc. described herein are only used to name similar structures differently for the convenience of description and do not limit the present application. For the convenience of description, some orientation words are inevitably used herein, but these orientation words do not limit the present application because they can be set in different directions in actual applications. The "several" described herein refers to an indefinite quantity, because the number of the structures referred to is not the inventive point, so no specific limitation is made.

[0022] A rotor pump, comprising a housing, an end cover 9, a first rotor 3 and a second rotor 4, the housing including an upper housing 2 and a lower housing 1; the first rotor is arranged inside the lower housing, and the second rotor is arranged inside the upper housing; the first rotor divides the inner cavity of the lower housing into two non-communicating volume chambers 110 (as Figure 3 shown); the lower housing is provided with two feed ports 101 and two first discharge ports 201; the first volume chamber is respectively communicated with the feed port and the first discharge port on the same side, and each feed port and the first discharge port are respectively communicated with the volume chamber on the same side; the upper housing is provided with two second discharge ports.

[0023] It can be observed from the attachment Figure 3 that the top of the rotor is internally tangent to the top of the inner wall of the lower housing, and the bottom of the rotor is internally tangent to the bottom of the inner wall of the lower housing, thus enclosing two volume chambers.

[0024] Please refer to Figure 2 and Figure 3 , further, a plurality of scrapers 5 are arranged on the first rotor, and springs 6 are respectively arranged between each scraper and the rotor in the radial direction ( Figure 2 the springs are not drawn in the figure). Due to the radial arrangement of the springs, each scraper can always abut against the inner wall of the lower housing. It can be observed from the attachment Figure 3 that the first rotor is respectively provided with scraper mounting grooves 30 corresponding to each scraper.

[0025] Further, each scraper is arranged at the same interval in the circumferential direction of the first rotor. Since the scrapers are arranged at equal intervals, it can be ensured that the lower housing can feed materials evenly.

[0026] As Figure 5 shown, further, each scraper 5 respectively includes a blade body 52 and a blade seat 51, and the blade seat is provided with a spring mounting hole 510. Preferably, two spring mounting holes are arranged on the blade seat to ensure stable support for the blade seat.

[0027] Further, two blades 521 are symmetrically arranged on the blade body 52. The significance of this setting is that during operation, one blade of each scraper can always be tangent to the inner wall of the lower housing.

[0028] As Figure 6 shown, further, a plurality of grooves 40 are formed in the side wall of the second rotor in the circumferential direction.

[0029] It can be observed from the attachment Figure 3 that the bottom of the second rotor is internally tangent to the bottom of the inner wall of the upper housing, and the internal tangent range can cover the two first discharge ports.

[0030] For the convenience of understanding, the working principle of the rotor pump is further explained below. Taking the left feed port for feeding as an example, at this time, the first rotor rotates clockwise and the second rotor rotates clockwise.

[0031] The material (in a fluid state) enters the left volume chamber from the left feed port. As the first rotor rotates, the material is compressed in the first volume chamber and then discharged from the first discharge port on the left. The material enters the groove of the second rotor, and as the second rotor continues to rotate, the material is discharged from the second discharge port under the action of centrifugal force, thereby achieving two-stage pressurization.

[0032] Conversely, if the material is fed from the right feed port, both the first rotor and the second rotor rotate counterclockwise. The material enters the right volume chamber and is discharged from the first discharge port on the right and enters the second housing.

[0033] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution and the inventive concept of the present utility model, and all such changes or substitutions should fall within the protection scope of the present utility model.

Claims

1. A rotor pump, comprising a housing, a front end cover, a rear end cover, a first rotor and a second rotor, characterized in that: The housing includes an upper housing and a lower housing; the first rotor is arranged in the lower housing, and the second rotor is arranged in the upper housing; the first rotor divides the inner cavity of the lower housing into two non-communicating volume chambers; The lower housing is provided with two feed inlets and two first discharge outlets; the first volume chamber is respectively communicated with the feed inlet and the first discharge outlet on the same side, and each feed inlet and the first discharge outlet are respectively communicated with the volume chamber on the same side; the upper housing is provided with two second discharge outlets.

2. The rotor pump according to claim 1, characterized in that: A plurality of scrapers are arranged on the first rotor, and springs are respectively arranged between each scraper and the rotor in the radial direction.

3. The rotor pump according to claim 2, characterized in that: Each scraper is arranged at the same interval in the circumferential direction of the first rotor.

4. The rotor pump according to claim 2, wherein: Each scraper respectively includes a blade body and a blade seat, and the blade seat is provided with a spring mounting hole.

5. The rotor pump according to claim 4, characterized in that: Two blades are symmetrically arranged on the blade body.

6. The rotor pump according to claim 4, characterized in that: A plurality of grooves are formed in the side wall of the second rotor in the circumferential direction.

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