Supporting device for screw pump rotor polishing

Abstract

A supporting device for screw pump rotor polishing relates to the technical field of screw pump rotor processing and comprises a box body, a cover plate is arranged at the top of the box body, two partition plates are arranged in the box body, an inner cavity of the box body is divided into a left cavity, a middle cavity and a right cavity by the two partition plates, a lifting plate is arranged in the middle cavity, and the lifting plate is arranged in the right cavity. The center of the bottom face of the lifting plate is in contact connection with a lead screw, the lead screw downwards penetrates out of the box body, the end of the lead screw is connected with a hand wheel, the center of the top face of the lifting plate is fixedly connected with an air cylinder, a piston rod of the air cylinder upwards penetrates out of the cover plate, the end of the piston rod is connected with a supporting plate, and two unpowered rollers are arranged on the supporting plate in parallel. The sensor is arranged to control stretching and retracting of the air cylinder, the interference problem during rotating polishing of the polishing head is solved, and the surface roughness of a rotor is improved; the heights of the multiple supporting devices can be adjusted to be consistent by arranging the hand wheel and the lead screw, and the problem that the center heights of rotors of different specifications are inconsistent with the centers of joints at the two ends is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw pump rotor processing, in particular to a supporting device for polishing a screw pump rotor. Background Art

[0002] PCP screw pumps are widely used in complex well conditions such as high viscosity and high sand content. As an important component, the size and tolerance accuracy of the rotor directly determine the pump efficiency of the screw pump. When polishing the rotor, under the action of the rotor's own weight and the downward pressure of the polishing head, the large and small diameters of the rotor at different positions with and without support will deviate. The larger the support spacing and the smaller the rotor's small diameter, the greater the deviation. Whether the height of each support is consistent and whether the height of the support and the drive device connecting the rotor rod head at both ends are consistent also affect the deviation of the rotor's large and small diameters. Due to the different large diameters of rotors of different specifications, the height of the support device needs to be adjusted. In order to improve the roughness of the rotor surface of rotors with different pitches, this can be achieved by rotating the polishing head at different angles. For polishing machines with rotating polishing heads, in order to avoid interference, when the polishing head encounters the support device, the support device needs to be able to sink and make way for the polishing head, so the support device is required to have a lifting function. Utility Model Content

[0003] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a support device for polishing a screw pump rotor, which can solve the above technical problems.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A support device for polishing a screw pump rotor comprises a box body, a cover plate provided on the top of the box body, two partition plates provided in the box body, the two partition plates divide the inner cavity of the box body into a left chamber, a middle chamber and a right chamber, a lifting plate provided in the middle chamber, a screw is contacted and connected to the center of the bottom surface of the lifting plate, the screw passes through the box body downward and a handwheel is connected to the end thereof, a cylinder is fixedly connected to the center of the top surface of the lifting plate, the piston rod of the cylinder passes through the cover plate upward and the end thereof is connected to the support plate, two unpowered rollers are arranged side by side on the support plate, both ends of the two unpowered rollers are arranged in the through holes of the positioning plate, and the positioning plate is connected to the support plate by bolts and nuts.

[0006] Preferably, guide plates are provided in both the left chamber and the right chamber, one end of the guide plate is fixedly connected to the inner wall of the box, and the other end is fixedly connected to the partition. A guide rod is provided on the guide plate, and the upper end of the guide rod passes through the cover plate and is connected to the support plate.

[0007] Preferably, the guide rod and the piston rod of the cylinder are both connected to the support plate through round nuts.

[0008] Preferably, sensors are provided on both side walls of the box.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention solves the interference problem during the rotating polishing of the polishing head by setting a sensor, and improves the surface roughness of the rotor; by setting a hand wheel and a screw, the height of multiple support devices can be adjusted to be consistent, which solves the problem that the center height of rotors of different specifications is inconsistent with the center of the joints at both ends, reduces the deviation of the major diameter and minor diameter of the rotor at the supported and unsupported parts, and improves the dimensional accuracy of the rotor polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is a front sectional view of the utility model;

[0012] Figure 2 It is a side sectional view of the present utility model.

[0013] Description of reference numerals:

[0014] 1-box, 2-cover, 3-left chamber, 4-middle chamber, 5-right chamber, 6-lifting plate, 7-screw, 8-handwheel, 9-cylinder, 10-support plate, 11-unpowered roller, 12-positioning plate, 13-guide plate, 14-guide rod, 15-sensor, 16-rotor, 17-polishing machine bed. DETAILED DESCRIPTION

[0015] The following describes the invention of the present invention in detail by way of examples in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Example

[0016] like Figures 1 to 2As shown, the utility model discloses a supporting device for polishing a screw pump rotor, comprising a box body 1, a cover plate 2 is provided on the top of the box body 1, two partitions are provided in the box body 1, the two partitions divide the inner cavity of the box body 1 into a left chamber 3, a middle chamber 4 and a right chamber 5, a lifting plate 6 is provided in the middle chamber 4, the lifting plate 6 is slidably connected to the plate surface of the partition, the bottom center of the lifting plate 6 is contacted with a screw 7, the screw 7 passes through the box body 1 downward and a handwheel 8 is connected to its end, the top center of the lifting plate 6 is fixedly connected to a cylinder 9, the piston rod of the cylinder 9 passes through the cover plate 2 upward and a support plate 10 is connected to its end, two unpowered rollers 11 are arranged side by side on the support plate 10, the two ends of the two unpowered rollers 11 are arranged in the through holes of the positioning plate 12, and the positioning plate 12 is connected to the support plate 10 by bolts and nuts. In this embodiment, the screw 7 is moved up and down by rotating the handwheel 8, thereby realizing the up and down movement of the lifting plate 6 and the cylinder 9 in the box body 1, which is beneficial to adjusting the height consistency of multiple supporting devices and ensuring that the center of the rotor 16 rod head and the center hole of the other end are consistent with the center height of the joints connected to the polishing machines at both ends when the rotor 16 is on the unpowered roller 11; when replacing rotors 16 of different specifications, rotating the handwheel 8 can solve the problem of the rotor 16 and the joints at both ends being out of center due to the different major diameters of the rotor 16.

[0017] Furthermore, in this embodiment, guide plates 13 are provided in both the left chamber 3 and the right chamber 5. One end of each guide plate 13 is fixedly connected to the inner wall of the housing 1, and the other end is fixedly connected to the partition. Guide rods 14 are provided on each guide plate 13. The upper end of each guide rod 14 extends through the cover plate 2 and is connected to the support plate 10. The provision of guide plates 13 and guide rods 14 facilitates guiding the movement direction of the support plate 10, ensuring that the two unpowered rollers 11 are parallel to the axis of the rotor 16, thereby providing more uniform force on the rotor 16.

[0018] Furthermore, in this embodiment, the guide rod 14 and the piston rod of the cylinder 9 are both connected to the support plate 10 through round nuts.

[0019] Furthermore, in this embodiment, the length of the unpowered roller 11 is greater than the maximum pitch of the rotor 16, and the large diameter of the rotor 16 is always in contact with the unpowered roller 11, which can ensure that the center height of the rotor 16 remains unchanged during polishing.

[0020] Furthermore, in this embodiment, sensors 15 are provided on both side walls of the box body 1. When polishing a rotor 16 with a larger pitch and a smaller diameter, it is necessary to rotate the polishing head to polish the rotor 16. At this time, the polishing belt and the unpowered roller 11 will interfere with each other, and the support plate 10 at the polishing head needs to be lowered to complete the polishing. The signal from the sensor 15 is used to control the extension and retraction of the cylinder 9 so that the support plate 10 avoids the polishing belt and completes the polishing of the small diameter rotor 16.

[0021] When in use, first, according to the length of the rotor 16, multiple supporting devices are evenly placed on the polishing machine bed 17, and the cover plate 2 on the top of the box 1 is pressed on the polishing machine bed 17; then the hand wheel 8 is turned to adjust the heights of the multiple supporting devices to be consistent, and ensure that the center of the rod head of the rotor 16 on the unpowered roller 11, the center hole at the other end and the center height of the joints connecting the polishing machines at both ends are consistent; finally, the rotor 16 is placed on the two unpowered rollers 11, and the rotor 16 can be driven by the joints to realize polishing while rotating on the unpowered rollers 11.

[0022] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and application concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A support device for polishing a screw pump rotor, comprising a housing (1), characterized in that: The box body (1) is provided with a cover plate (2) on the top, and two partition plates are provided in the box body (1), and the two partition plates divide the inner cavity of the box body (1) into a left chamber (3), a middle chamber (4) and a right chamber (5). The middle chamber (4) is provided with a lifting plate (6), and the bottom center of the lifting plate (6) is contacted and connected with a lead screw (7), and the lead screw (7) passes through the box body (1) downward and is connected to a hand wheel (8) at its end. The top center of the lifting plate (6) is fixedly connected with a cylinder (9), and the piston rod of the cylinder (9) passes through the cover plate (2) upward and is connected to a support plate (10) at its end. Two unpowered rollers (11) are arranged in parallel on the support plate (10), and both ends of the two unpowered rollers (11) are arranged in the through holes of the positioning plate (12), and the positioning plate (12) is connected to the support plate (10) by bolts and nuts.

2. A support device for polishing a screw pump rotor according to claim 1, characterized in that: A guide plate (13) is provided in each of the left chamber (3) and the right chamber (5), one end of the guide plate (13) is fixedly connected to the inner wall of the box body (1), and the other end is fixedly connected to the partition plate. A guide rod (14) is provided on the guide plate (13), and the upper end of the guide rod (14) passes through the cover plate (2) and is connected to the support plate (10).

3. A support device for polishing a screw pump rotor according to claim 2, characterized in that: The guide rod (14) and the piston rod of the cylinder (9) are both connected to the support plate (10) via round nuts.

4. A support device for polishing a screw pump rotor according to claim 1, characterized in that: Sensors (15) are provided on both side walls of the box (1).

Images