Screw pump rotor assembly tooling plate
By designing the screw pump rotor assembly tooling plate, the screw pump rotor assembly problem is solved, a simple and efficient assembly process is achieved, the assembly efficiency is improved and the rotor gap problem is avoided.
Patent Information
- Application Number
- CN202422894024.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The existing technology makes it difficult to simply and efficiently install the screw pump rotor into the pump body, resulting in low assembly efficiency and the problem of improper rotor clearance.
A screw pump rotor assembly tooling plate is used, which has the same outer diameter as the rotor outer diameter, symmetrically distributed holes in the middle, and an outer contour with an angle, which is used for positioning and guiding to prevent the rotor from rubbing against the pump body. It is made of non-metallic materials such as nylon or bakelite.
The screw pump rotor is easily and efficiently installed into the pump body, which improves the assembly efficiency, avoids improper rotor clearance, and has a simple and reliable structure.
Smart Images
Figure CN223369322U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of screw pump assembly tooling, and in particular relates to a screw pump rotor assembly tooling plate. Background Art
[0002] The core component of a twin-screw vacuum pump is a pair of non-contact screw rotors that mesh with each other. The two screws are finely balanced and supported by bearings and installed in the pump body. In the screw pump assembly process, installing the screw pump rotors into the pump body is a key step. The installation quality of the screw pump rotors directly affects the performance of the screw pump. The screw pump rotors are difficult to assemble. During installation, the meshing clearance of the pair of rotors needs to be adjusted, and the direction cannot be fixed in the circumferential direction. When the gap between the two rotors is too large, air leakage will occur between the rotors when the screw pump is working. When the gap between the rotors is too small, interference will occur between the pair of rotors when the screw pump is working. How to simply and efficiently install the screw pump rotors into the pump body and improve the assembly efficiency of the screw pump has been beneficially designed by the applicant. The technical solution to be introduced below was produced in this context. Utility Model Content
[0003] The utility model aims to provide a screw pump rotor assembly tooling plate, which can simply and efficiently assemble the screw pump rotor into a pump body.
[0004] The purpose of the utility model is achieved in this way. A tooling plate for assembling a rotor of a screw pump is provided. The screw pump comprises a pump body and a pair of rotors. When the pair of rotors are assembled into the pump body, a tooling plate is assembled at one end. The outer diameter of the tooling plate is the same as the outer diameter of the pair of rotors. Two symmetrically distributed holes are formed in the middle of the tooling plate. The center distance between the two holes is equal to the center distance between the pair of rotors. The tooling plate has an oblique angle formed on the edge of the outer contour.
[0005] In a specific embodiment of the present invention, the outer contour of the tooling plate is an eight-shaped shape, and is consistent with the cross-sectional shape of the inner hole of the pump body.
[0006] In another specific embodiment of the present invention, the tooling plate is formed with installation avoidance gaps on both the left and right sides.
[0007] In another specific embodiment of the present invention, a notch is formed on each of the upper and lower sides of the tooling plate.
[0008] In another specific embodiment of the present invention, the tooling plate is a non-metallic plate.
[0009] In another specific embodiment of the present invention, the tooling board is a nylon board or a bakelite board.
[0010] Due to the adoption of the above structure, the utility model has the beneficial effects compared with the prior art: the screw pump rotor can be simply and efficiently installed into the pump body, thereby improving the assembly efficiency of the screw pump; and the structure is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic structural diagram of the tooling plate described in the present utility model;
[0012] Figure 2 This is a schematic diagram of the assembly of the tooling plate and a pair of rotors described in the present invention;
[0013] Figure 3 This is a schematic diagram of an application example of the present utility model.
[0014] In the figure: 1. tooling plate, 11. hole, 12. bevel, 13. notch, 14. recess; 2. rotor; 3. end cover; 4. pump body. DETAILED DESCRIPTION
[0015] The specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments does not limit the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as within the scope of protection of the present invention.
[0016] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are with respect to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solutions provided by the present invention.
[0017] See Figure 1 and Figure 2 The utility model relates to a tooling plate for assembling a rotor of a screw pump. The screw pump comprises a pump body 4 and a pair of rotors 2. When the pair of rotors 2 are assembled into the pump body 4, the tooling plate 1 is assembled at one end to play the role of positioning the rotors 2.
[0018] The tooling plate 1 has an outer profile of an "e" (splayed) shape, with an outer diameter identical to that of the rotors 2 and coinciding with the cross-sectional shape of the inner bore of the pump body 4. The tooling plate 1 has a notch 14 formed on each of its upper and lower sides to prevent interference with the pump body 4. The tooling plate 1 has two symmetrically spaced holes 11 in the center, with the center-to-center distance between the holes 11 being equal to the center-to-center distance between the rotors 2. The tooling plate 1 also has a bevel 12 formed on its outer edge for positioning.
[0019] Furthermore, the tooling plate 1 is made of non-metallic materials such as nylon board or bakelite board.
[0020] The following describes the assembly process of the present invention. First, assemble the pair of rotors 2 and the end cover 3 of the screw pump into a component, and then insert the two holes 11 of the tooling plate 1 into the two shaft handles of the pair of rotors 2, as shown in FIG. Figure 2 As shown; then the rotor assembly as Figure 3 Install the screw pump into the pump body 4 in the direction indicated by the arrow, and finally remove the tooling plate 1. This tooling plate 1 positions the rotors 2 of the screw pump when they are installed into the pump body 4, ensuring that the rotors 2 are parallel to each other and maintain a constant center-to-center distance. It also serves as a guide during installation, effectively preventing the rotors 2 from rubbing against the pump body 4. The tooling plate 1 has installation clearance notches 13 on both sides, allowing for smooth removal after the rotors 2 are assembled.
Claims
1. A tooling plate for assembling a rotor of a screw pump, wherein the screw pump comprises a pump body (4) and a pair of rotors (2). When the pair of rotors (2) are assembled into the pump body (4), a tooling plate (1) is assembled at one end, characterized in that: The outer diameter of the tooling plate (1) is the same as the outer diameter of the pair of rotors (2). The tooling plate (1) is formed with two symmetrically distributed holes (11) in the middle. The center distance between the two holes (11) is equal to the center distance between the pair of rotors (2). The tooling plate (1) is formed with a bevel (12) on the outer contour edge.
2. The screw pump rotor assembly tooling plate according to claim 1, characterized in that: The outer contour of the tooling plate (1) is in an eight-shaped shape, and is consistent with the cross-sectional shape of the inner hole of the pump body (4).
3. The screw pump rotor assembly tooling plate according to claim 1, characterized in that: The tooling plate (1) is formed with installation avoidance notches (13) on both the left and right sides.
4. The screw pump rotor assembly tooling plate according to claim 1, characterized in that: The tooling plate (1) is formed with a notch (14) on both the upper and lower sides.
5. The screw pump rotor assembly tooling plate according to claim 1, characterized in that: The tooling plate (1) is a non-metallic plate.
6. The screw pump rotor assembly tooling plate according to claim 5, characterized in that: The tooling board (1) is a nylon board or a bakelite board.