A centrifugal pump cover

Abstract

This utility model provides a centrifugal pump cover, belonging to the technical field of centrifugal pump cover technology. It includes a bottom cover and an adjusting assembly. The adjusting assembly includes two fixed posts, a rotating frame, a mounting frame, a limiting plate, a pressing post, and a spring. Each fixed post slides through the interior of the bottom cover. The rotating frame is rotatably mounted on the outer wall of one of the fixed posts. The mounting frame is fixedly mounted on the outer walls of the two fixed posts. The limiting plate is fixedly mounted on the outer wall of the bottom cover. The pressing post slides through the interior of the limiting plate. The spring is fixedly mounted on the outer wall of the rotating frame, and the limiting post is fixedly mounted on one end of the spring. By separating the pump cover body into several parts, the sealing groove can have independent operating space. Operating tools can contact the sealing ring and the inner wall of the groove without dead angles, and operators can quickly complete separation and assembly. Compared with traditional pump covers, the disassembly and assembly time is significantly shortened. The separated sealing groove has an open structure, which can thoroughly remove substances remaining in the sealing groove.

Description

Technical Field

[0001] This utility model belongs to the field of centrifugal pump cover technology, and specifically relates to a centrifugal pump cover. Background Technology

[0002] The pump cover is one of the key structural components of a centrifugal pump. It is usually located on the top or side of the pump body and is tightly connected to the pump body by bolts to form a closed fluid chamber. Its design needs to work in conjunction with the pump body, impeller, sealing components, etc. to ensure the sealing performance and stability of the pump under high pressure and high speed. The material of the pump cover is usually the same as that of the pump body, such as cast iron, stainless steel, alloy steel, etc., to adapt to the corrosiveness, temperature and pressure requirements of different media. The pump cover and the pump body form a seal through precision-machined contact surfaces to prevent the conveyed medium from leaking into the external environment and to prevent external impurities from entering the pump.

[0003] The following drawbacks exist when using a centrifugal pump cover: To reduce the overall size of the pump, the cover is often designed with a compact structure, resulting in the sealing ring mounting groove being located inside a narrow cavity, making it difficult to reach with tools such as hook tweezers or scrapers. The distance between the cover and the pump body, bearing seat, or bushing is too small, making it easy to collide with adjacent components when replacing the sealing ring, causing scratches on the sealing ring or damage to the pump body surface. To improve sealing performance, some pump covers use irregularly shaped grooves, but residual old sealant and rust products easily get embedded in the dead corners at the bottom of the groove during cleaning, making it difficult to remove completely with ordinary tools. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal pump cover, which aims to solve the problems mentioned in the background art.

[0005] A centrifugal pump cover, comprising,

[0006] Bottom cover;

[0007] The adjustment assembly includes two fixed posts, a rotating frame, a mounting frame, a limiting plate, a pressing post, a limiting post, and a spring. Each fixed post slides through the interior of the bottom cover. The rotating frame is rotatably mounted on the outer wall of one of the fixed posts. The mounting frame is fixedly mounted on the outer walls of the two fixed posts. The limiting plate is fixedly mounted on the outer wall of the bottom cover. The pressing post slides through the interior of the limiting plate. The spring is fixedly mounted on the outer wall of the rotating frame. The limiting post is fixedly mounted on one end of the spring.

[0008] Furthermore, a hole is provided at the center of the limiting plate, and the limiting post matches the hole.

[0009] Furthermore, the top and bottom of the outer wall of the rotating frame are provided with sealing grooves, and each sealing groove is provided with a tightening ring on its inner wall.

[0010] Furthermore, the outer wall of the mounting frame is provided with multiple mounting holes, and the top and bottom of the outer wall of the rotating frame are fixedly provided with fixing sleeves.

[0011] Furthermore, connecting caps are fixedly provided on the outer walls of the two tightening rings.

[0012] Furthermore, each of the connecting covers has a rotating column rotatably mounted on both sides of its outer wall, and each of the fixed columns has a nut threadedly connected to its outer wall.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By separating the pump cover body into several parts, the sealing groove can have an independent operating space. The operating tools can contact the sealing ring and the inner wall of the groove without dead angles, avoiding the "blind spot" operation caused by the narrow interior of the pump cover or interference with the parts. The operator can quickly complete the separation and assembly, which significantly shortens the disassembly and assembly time compared with the traditional pump cover. The separated sealing groove has an open structure, which can thoroughly remove residual old sealant, rust, media crystals and other contaminants, avoiding the residue generated in the traditional pump cover due to the complex groove shape. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a first-view perspective perspective view of the present invention;

[0017] Figure 2 This is a second-view perspective perspective view of the present invention;

[0018] Figure 3 This is a third-person perspective view of the present invention;

[0019] Figure 4 This is a sectional perspective view of the present invention.

[0020] In the diagram: 1. Bottom cover; 2. Bolt; 3. Rotating frame; 4. Mounting frame; 5. Sealing groove; 6. Tightening ring; 7. Fixing sleeve; 8. Connecting cover; 9. Rotating column; 10. Limiting plate; 11. Pressing column; 12. Mounting hole; 13. Limiting column; 14. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-4 The technical solution provided in this embodiment is as follows:

[0025] A centrifugal pump cover, comprising,

[0026] Bottom cover 1;

[0027] The adjustment assembly includes two bolts 2, a rotating frame 3, a mounting frame 4, a limiting plate 10, a pressing post 11, a limiting post 13, and a spring 14. Each bolt 2 slides through the inside of the bottom cover 1. The rotating frame 3 is rotatably mounted on the outer wall of one of the bolts 2. The mounting frame 4 is fixedly mounted on the outer walls of the two bolts 2. The limiting plate 10 is fixedly mounted on the outer wall of the bottom cover 1. The pressing post 11 slides through the inside of the limiting plate 10. The spring 14 is fixedly mounted on the outer wall of the rotating frame 3. The limiting post 13 is fixedly mounted on one end of the spring 14.

[0028] In a specific embodiment of this utility model, by separating the pump cover body into several parts, the sealing groove 5 can have an independent operating space. Operating tools can contact the sealing ring and the inner wall of the groove without any blind spots, avoiding "blind spot" operation caused by the narrow interior of the pump cover or interference components. Operators can quickly complete separation and assembly, significantly shortening the disassembly and assembly time compared to traditional pump covers. The separated sealing groove 5 has an open structure, which can thoroughly remove residual old sealant, rust, media crystals, and other contaminants, avoiding residues generated in traditional pump covers due to their complex groove shape. By rotating the rotating frame 3, the pump cover is separated as a whole, enabling rapid replacement of the sealing ring and cleaning of the sealing groove 5. After cleaning the sealing groove 5 and replacing the sealing ring, the tightening ring 6 can be tightened by pulling the connecting cover 8 outwards. Then, by rotating the two rotating columns 9, the rotating columns 9 are locked onto the outer wall of the rotating frame 3 to achieve limiting and fixing. The overall height of the sealing ring is slightly higher than the sealing groove 5. The distance between the bottom cover 1 and the mounting frame 4 is greater than the height of the rotating frame 3, and the bottom cover 1 and the rotating frame 3 can slide on the outer wall of the bolt 2. Rotate the rotating frame 3 back to its original position. One end of the limiting column 13 is arc-shaped. When it rotates to touch the surface of the limiting plate 10, the limiting column 13 and the spring 14 will be squeezed. Then the limiting column 13 on the spring 14 will be locked into the hole of the limiting plate 10 to restore the position of the rotating frame 3. Then, the bottom cover 1 is pressed down to make the bottom cover 1, the rotating frame 3 and the mounting frame 4 fit tightly together. Then, the bolt 2 is used to fix it. When the sealing ring is replaced next time, the rotating frame 3 can be disengaged by pushing the pressing column 11.

[0029] Specifically, a hole is provided at the center of the limiting plate 10, and the limiting post 13 matches the hole.

[0030] In a specific embodiment of this utility model, a hole is provided at the center of the limiting plate 10, so that when the position of the rotating frame 3 is restored in the future, the limiting post 13 and the limiting plate 10 can be used to limit the position.

[0031] Specifically, the top and bottom of the outer wall of the rotating frame 3 are provided with sealing grooves 5, and each sealing groove 5 has a tightening ring 6 on its inner wall.

[0032] In a specific embodiment of this utility model, each sealing groove 5 is provided with a tightening ring 6 on its inner wall, which facilitates stretching the sealing ring to tighten it after the new sealing ring is replaced.

[0033] Specifically, the outer wall of the mounting frame 4 has multiple mounting holes 12, and the top and bottom of the outer wall of the rotating frame 3 are fixedly fitted with fixing sleeves 7.

[0034] In a specific embodiment of this utility model, the outer wall of the mounting frame 4 is provided with a plurality of mounting holes 12, which can be used to install the pump body.

[0035] Specifically, the outer walls of the two tightening rings 6 are fixedly equipped with connecting covers 8.

[0036] In a specific embodiment of this utility model, the outer walls of the two tightening rings 6 are fixedly provided with connecting covers 8, which facilitates the rotation of the rotating column 9 to be locked onto the outer wall of the rotating frame 3 for restriction.

[0037] Specifically, each connecting cover 8 has a rotating column 9 on both sides of its outer wall, and each bolt 2 has a nut threaded onto its outer wall.

[0038] In a specific embodiment of this utility model, each bolt 2 is threaded with a nut on its outer wall. The nut is used to finally achieve a tight fit and fixation between the bottom cover 1, the rotating frame 3 and the mounting frame 4.

[0039] Working principle: By rotating the rotating frame 3, the pump cover is separated, allowing for quick replacement of the sealing ring and cleaning of the sealing groove 5. After cleaning the sealing groove 5 and replacing the sealing ring, pulling the connecting cover 8 outward allows the tightening ring 6 to tighten the new sealing ring. Then, rotating the two rotating columns 9 causes them to lock onto the outer wall of the rotating frame 3 for positioning and fixation. The overall height of the sealing ring is slightly higher than the sealing groove 5, and the distance between the bottom cover 1 and the mounting frame 4 is greater than the height of the rotating frame 3. The bottom cover 1 and the rotating frame 3 can be connected by screws. Slide the outer wall of bolt 2 to rotate the rotating frame 3 back to its original position. One end of the limiting post 13 is arc-shaped. When it rotates to touch the surface of the limiting plate 10, the limiting post 13 and the spring 14 will be squeezed. Then the limiting post 13 on the spring 14 will be engaged with the hole in the limiting plate 10, thus restoring the position of the rotating frame 3. Then press the bottom cover 1 down to make the bottom cover 1, the rotating frame 3 and the mounting frame 4 fit tightly together. Then fix them with bolt 2. When replacing the sealing ring next time, push the pressing post 11 to make the rotating frame 3 disengage from the limiting position.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A centrifugal pump cover, characterized in that include, Bottom cover (1); The adjustment assembly includes two bolts (2), a rotating frame (3), a mounting frame (4), a limiting plate (10), a pressing post (11), a limiting post (13), and a spring (14). Each bolt (2) slides through the inside of the bottom cover (1). The rotating frame (3) is rotatably mounted on the outer wall of one of the bolts (2). The mounting frame (4) is fixedly mounted on the outer walls of the two bolts (2). The limiting plate (10) is fixedly mounted on the outer wall of the bottom cover (1). The pressing post (11) slides through the inside of the limiting plate (10). The spring (14) is fixedly mounted on the outer wall of the rotating frame (3). The limiting post (13) is fixedly mounted on one end of the spring (14).

2. A centrifugal pump cover according to claim 1, characterized in that, The limiting plate (10) has a hole at its center, and the limiting post (13) matches the hole.

3. A centrifugal pump cover according to claim 2, characterized in that, The rotating frame (3) has sealing grooves (5) at the top and bottom of its outer wall, and each sealing groove (5) has a tightening ring (6) on its inner wall.

4. A centrifugal pump cover according to claim 3, characterized in that, The outer wall of the mounting frame (4) is provided with multiple mounting holes (12), and the top and bottom of the outer wall of the rotating frame (3) are fixedly provided with fixing sleeves (7).

5. A centrifugal pump cover according to claim 4, characterized in that, Connecting caps (8) are fixedly provided on the outer walls of the two tightening rings (6).

6. A centrifugal pump cover according to claim 5, characterized in that, Each of the connecting covers (8) has a rotating column (9) rotatably provided on both sides of its outer wall, and each of the bolts (2) has a nut threadedly connected to its outer wall.

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