Screw pump stator protection mechanism

Abstract

The utility model discloses a screw pump stator protection mechanism which is arranged on a suction chamber of a screw pump, the suction chamber is fixed on a base, a discharging barrel is arranged on the base, a first flange plate is arranged on the suction chamber, a second flange plate is arranged on the discharging barrel, and the first flange plate and the second flange plate are fixed on the base. The screw pump stator protection mechanism is composed of two half-cylinder structures, arc-shaped flange structures are formed at the two ends of each half-cylinder structure respectively, the arc-shaped flange structures are locked on the first flange plate and the second flange plate through first screw assemblies respectively, a rubber stator is arranged in the screw pump stator protection mechanism, and the rubber stator is arranged in the screw pump stator protection mechanism. The rubber stator is formed by splicing two semicircular rubber cylinders; the problems that one end of an existing stator cylinder is connected with a suction chamber, the other end of the existing stator cylinder is connected with a discharging pipe, and when an internal rubber stator needs to be replaced, the whole discharging pipe needs to be detached from the stator cylinder, and operation is very tedious are solved.

Description

Technical Field

[0001] The utility model relates to a screw pump, and specifically, to a stator protection mechanism for a screw pump. Background Art

[0002] A screw pump is a pump that uses the rotation of a screw to suck and discharge liquid, and it belongs to a type of positive displacement pump. The working principle of a screw pump is that through the rotation of the screw in the pump body, the liquid is sucked in from the inlet, and then the liquid is pushed out of the pump body through the rotation of the screw and discharged from the outlet. For example, the Chinese patent with the patent number CN202323398862.8 provides a single screw pump outlet short - connection device, which relates to the technical field of single screw pumps. It is connected through a short - connection, a groove on the connecting bracket and a protrusion on the stator. The short - connection and the connecting bracket are connected to the pump body through long bolts. When maintenance is required, the long bolts are removed from the pump body, and the short - connection and the connecting bracket are directly removed radially from the stator, realizing the convenient disassembly of the short - connection. For screw pumps such as the above - mentioned prior art, a rubber stator needs to be arranged inside the stator cylinder, and a rotor is arranged inside the rubber stator. One end of the stator cylinder is connected to the suction chamber, and the other end is connected to the discharge pipeline. When the internal rubber stator needs to be replaced, the entire discharge pipe needs to be disassembled from the stator cylinder, which is very cumbersome. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a stator protection mechanism for a screw pump, which solves the problem that one end of the existing stator cylinder is connected to the suction chamber and the other end is connected to the discharge pipeline. When the internal rubber stator needs to be replaced, the entire discharge pipe needs to be disassembled from the stator cylinder, which is very cumbersome.

[0004] To achieve the above purpose, the utility model provides a stator protection mechanism for a screw pump. The stator protection mechanism of the screw pump is arranged on the suction chamber of the screw pump. The suction chamber is fixed on the base, and a discharge cylinder is arranged on the base. A first flange is arranged on the suction chamber, and a second flange is arranged on the discharge cylinder. The stator protection mechanism of the screw pump is composed of two semi - cylinder structures. Arc - shaped flange structures are respectively formed at both ends of the semi - cylinder structure, and the arc - shaped flange structures are respectively locked on the first flange and the second flange through first screw assemblies. A rubber stator is arranged inside the stator protection mechanism of the screw pump, and the rubber stator is formed by splicing two semi - circular rubber cylinders.

[0005] Preferably, arc - shaped limiting strips are respectively formed at both ends of the inner wall of the semi - cylinder structure, and both ends of the rubber stator respectively abut against the rubber stator.

[0006] Preferably, a sealing strip is arranged on the docking surface of the two semi - cylinder structures.

[0007] Preferably, the discharge cylinder is fixed on the base through a bracket.

[0008] Preferably, a pressing assembly is provided on the outer wall of the stator protection mechanism of the screw pump;

[0009] The pressing assembly is composed of two semi-circular plates spliced together. The two ends of each semi-circular plate respectively extend to form splicing parts, and the two splicing parts are fastened by a second screw assembly.

[0010] Preferably, a sliding seat is provided on the splicing part located below. A chute is formed on the base, and at least part of the sliding seat is slidably engaged in the chute.

[0011] Beneficial effects: The present invention provides a stator protection mechanism for a screw pump. The stator protection mechanism of the screw pump is arranged on the suction chamber of the screw pump. The suction chamber is fixed on the base. A discharge cylinder is provided on the base. A first flange is provided on the suction chamber, and a second flange is provided on the discharge cylinder. The stator protection mechanism of the screw pump is composed of two semi-cylindrical structures. Arc-shaped flange structures are respectively formed at both ends of the semi-cylindrical structure. The arc-shaped flange structures are respectively locked on the first flange and the second flange through a first screw assembly. A rubber stator is arranged inside the stator protection mechanism of the screw pump. The rubber stator is formed by splicing two semi-circular rubber cylinders; here, the discharge cylinder is connected to the discharge pipeline. When it is necessary to replace the rubber stator, it is not necessary to disassemble the discharge pipeline. Only the upper semi-cylindrical structure needs to be disassembled, and the two semi-circular rubber cylinders can be disassembled. It is not necessary to disassemble the internal rotor either, which greatly improves the replacement efficiency of the rubber stator.

[0012] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0013] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0014] Figure 1 is a structural diagram of the stator protection mechanism of the screw pump provided by the present invention;

[0015] Figure 2 is a side view of the stator protection mechanism of the screw pump provided by the present invention;

[0016] Figure 3 is an exploded view of the stator protection mechanism of the screw pump provided by the present invention;

[0017] Figure 4 is a structural diagram of the rubber stator in the stator protection mechanism of the screw pump provided by the present invention.

[0018] Description of Reference Numerals

[0019] 1 - Base; 2 - Suction Chamber; 3 - First Flange; 4 - Bracket; 5 - Discharge Tube; 6 - Second Flange; 7 - Slide Groove; 8 - Semi - circular Plate; 9 - Semi - circular Plate; 10 - Splice Portion; 11 - Rubber Stator; 12 - Arc Flange Structure; 13 - Arc Limiting Strip; 14 - Rubber Stator. Detailed Embodiment

[0020] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0021] As Figures 1-4 shown: The present invention provides a protection mechanism for a screw pump stator. The protection mechanism for the screw pump stator is arranged on the suction chamber 2 of the screw pump. The suction chamber 2 is fixed on the base 1. A discharge tube 5 is arranged on the base 1. A first flange 3 is arranged on the suction chamber 2. A second flange 6 is arranged on the discharge tube 5. The protection mechanism for the screw pump stator is composed of two semi - cylinder structures 11. Arc flange structures 12 are respectively formed at both ends of the semi - cylinder structure 11. The arc flange structures 12 are respectively locked on the first flange 3 and the second flange 6 through first screw assemblies. A rubber stator 14 is arranged inside the protection mechanism for the screw pump stator. The rubber stator 14 is formed by splicing two semi - circular rubber cylinders. Here, the discharge tube is connected to the discharge pipeline. When the rubber stator needs to be replaced, it is not necessary to disassemble the discharge pipeline. Only the upper semi - cylinder structure needs to be disassembled, and the two semi - circular rubber cylinders can be disassembled. The internal rotor does not need to be disassembled either, which greatly improves the replacement efficiency of the rubber stator.

[0022] In a preferred embodiment of the present invention, in order to limit the rubber stator inside left and right and prevent it from skewing inside, arc limiting strips 13 are respectively formed at both ends of the inner wall of the semi - cylinder structure 11, and both ends of the rubber stator 14 respectively abut against the rubber stator 14.

[0023] In a preferred embodiment of the present invention, in order to increase the sealing performance at the splicing part of the two semi - cylinder structures, sealing strips are arranged on the docking surfaces of the two semi - cylinder structures 11.

[0024] In a preferred embodiment of the present invention, in order to fix the discharge tube, the discharge tube 5 is fixed on the base 1 through a bracket 4.

[0025] In a preferred embodiment of the present invention, in order to effectively clamp the two semi - cylinder structures 11, a pressing assembly is arranged on the outer wall of the protection mechanism for the screw pump stator;

[0026] The pressing component is composed of two semi-circular plates 8 spliced together. Splicing parts 10 are respectively formed at both ends of the semi-circular plate 8, and the two splicing parts 10 are fastened by a second screw assembly.

[0027] In a preferred embodiment of the present invention, in order to facilitate the sliding of the two semi-circular plates and facilitate the disassembly of the internal stator protection mechanism, a sliding seat 9 is provided on the splicing part 10 located below, a sliding groove 7 is formed on the base 1, and at least part of the sliding seat 9 is slidably engaged in the sliding groove 7.

[0028] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0029] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. In order to avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0030] In addition, any combination can be made between various different embodiments of the present invention, as long as it does not violate the idea of the present invention, it should also be regarded as the content disclosed by the present invention.

Claims

1. A stator protection mechanism for a screw pump, characterized in that The screw pump stator protection mechanism is arranged on the suction chamber (2) of the screw pump. The suction chamber (2) is fixed on the base (1). A discharge cylinder (5) is arranged on the base (1). A first flange (3) is arranged on the suction chamber (2). A second flange (6) is arranged on the discharge cylinder (5). The screw pump stator protection mechanism is composed of two semi-cylindrical structures (11). Arc-shaped flange structures (12) are respectively formed at both ends of the semi-cylindrical structure (11). The arc-shaped flange structures (12) are respectively locked on the first flange (3) and the second flange (6) through first screw assemblies. A rubber stator (14) is arranged inside the screw pump stator protection mechanism. The rubber stator (14) is formed by splicing two semi-circular rubber cylinders.

2. The stator protection mechanism of the screw pump according to claim 1, characterized in that, Arc-shaped limiting strips (13) are respectively formed at both ends of the inner wall of the semi-cylindrical structure (11). Both ends of the rubber stator (14) are respectively in contact with the rubber stator (14).

3. The stator protection mechanism of the screw pump according to claim 1, characterized in that, Sealing strips are arranged on the butting surfaces of the two semi-cylindrical structures (11).

4. The stator protection mechanism of the screw pump according to claim 1, characterized in that, The discharge cylinder (5) is fixed on the base (1) through a bracket (4).

5. The stator protection mechanism of the screw pump according to claim 1, characterized in that, A pressing component is arranged on the outer wall of the screw pump stator protection mechanism; The pressing component is composed of two semi-circular plates (8) spliced together. Splicing parts (10) are respectively extended at both ends of the semi-circular plate (8). The two splicing parts (10) are fastened through second screw assemblies.

6. The stator protection mechanism of the screw pump according to claim 5, characterized in that, A sliding seat (9) is arranged on the splicing part (10) located below. A sliding groove (7) is formed on the base (1). At least part of the sliding seat (9) is slidably engaged in the sliding groove (7).

Images