Multi-stage centrifugal pump

Abstract

The utility model discloses a multistage centrifugal pump which comprises a centrifugal pump body, a mounting plate is welded to the bottom of the centrifugal pump body, a fixing frame is installed on the surface of the centrifugal pump body, a sliding rod is welded to the side face of the fixing frame, a supporting strip is arranged outside the centrifugal pump body, a sliding groove is formed in the side face of the supporting strip, and the sliding rod is located in the sliding groove. The surface of the sliding rod is provided with an external thread and sleeved with an extrusion rotating disc. According to the multi-stage centrifugal pump, the mounting plate is welded to the bottom of the centrifugal pump body, the fixing frame is mounted on the surface of the centrifugal pump body, the sliding rod is welded to the side face of the fixing frame, then the extrusion rotating disc is rotated till the extrusion rotating disc clamps the supporting strip, and therefore the fixing effect is provided for the supporting strip, and finally mounting is conducted through the mounting block; and at the moment, the mounting strength and the stable effect after the centrifugal pump is mounted can be improved through the supporting plate and the mounting block.

Description

Technical Field

[0001] This utility model belongs to the field of centrifugal pump technology, and in particular relates to a multi-stage centrifugal pump. Background Technology

[0002] A multistage centrifugal pump is a combination of two or more centrifugal pumps with the same function. In terms of fluid channel structure, the medium pressure relief port of the first stage is connected to the inlet of the second stage, and the medium pressure relief port of the second stage is connected to the inlet of the third stage. This series connection mechanism forms a multistage centrifugal pump.

[0003] The following problems exist with multistage centrifugal pumps currently on the market during actual use:

[0004] 1. In actual use, traditional multistage centrifugal pumps are only fixed by the bottom mounting plate during installation. However, the multistage centrifugal pump is installed at a relatively high height. Therefore, the multistage centrifugal pump only has one fixed point during use, resulting in low strength and poor installation stability after installation.

[0005] 2. Most multistage centrifugal pumps are quite heavy during use. When moving them over short distances, they are usually carried manually, which may require a lot of people and make the movement quite troublesome. Utility Model Content

[0006] The purpose of this invention is to provide a multi-stage centrifugal pump to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the specific technical solution of this utility model is as follows: A multi-stage centrifugal pump includes a centrifugal pump body, a mounting plate welded to the bottom of the centrifugal pump body, a fixing frame mounted on the surface of the centrifugal pump body, a sliding rod welded to the side of the fixing frame, a support bar provided on the outside of the centrifugal pump body, a sliding groove formed on the side of the support bar, the sliding rod located inside the sliding groove, an external thread formed on the surface of the sliding rod, a pressing turntable sleeved on the surface of the sliding rod, one end of the pressing turntable fitting against the side of the support bar, and the support bar connected to a mounting block via a rotating shaft.

[0008] Preferably, a fixing plate is installed on the top of the centrifugal pump body, a bearing is installed on the top of the fixing plate, a first shaft is sleeved inside the bearing, a fixing plate is welded to the top of the first shaft, a fixing block is welded to the top of the fixing plate, the fixing blocks are symmetrically distributed, a second shaft is sleeved inside the fixing block, a roller is sleeved on the surface of the second shaft, a fixing seat is fixedly connected to the surface of the centrifugal pump body, and a handle is welded to the other end of the fixing seat.

[0009] Preferably, a first external threaded rod is welded to the side of the centrifugal pump body, the first external threaded rod passes through the fixing frame, a first nut is sleeved on the surface of the first external threaded rod, one end of the first nut is attached to the surface of the fixing frame, and the first external threaded rod is symmetrically distributed.

[0010] Preferably, a second external threaded rod is welded to the top of the centrifugal pump body, the second external threaded rod passes through the fixed plate, a second nut is sleeved on the surface of the second external threaded rod, and one end of the second nut is attached to the top of the fixed plate.

[0011] Preferably, a limiting ring is welded to the surface of the slide bar, a limiting groove is formed inside the support bar, and the limiting ring is located inside the limiting groove.

[0012] Preferably, a retaining ring is welded to the top of the centrifugal pump body, and a fixing disc is sleeved inside the retaining ring. The second external threaded rod is distributed in a ring shape.

[0013] The multistage centrifugal pump of this invention has the following advantages:

[0014] 1. This multistage centrifugal pump is characterized by welding an mounting plate to the bottom of the pump body, installing a fixing frame on the surface of the pump body, welding a sliding rod to the side of the fixing frame, and providing a support bar on the outside of the pump body. A groove is opened on the side of the support bar, with the sliding rod located inside the groove. An external thread is opened on the surface of the sliding rod, and a pressing disc is fitted onto the surface of the sliding rod. One end of the pressing disc is attached to the side of the support bar, and the support bar is connected to the mounting block via a rotating shaft. When installing the centrifugal pump, the mounting plate can be used to install it in a suitable position first. Then, the sliding rod and groove are used to move the support bar. The sliding rod and groove allow the support bar to move up and down and rotate, thus allowing for adjustment. When adjusting the support bar, the mounting block is kept in contact with the ground. The pressing disc is then rotated until it clamps the support bar, providing a fixing effect. Finally, the mounting block is used for installation. The support plate and mounting block improve the installation strength and stability of the centrifugal pump after installation.

[0015] 2. This multistage centrifugal pump features a fixed plate mounted on top of the pump body, a bearing mounted on top of the fixed plate, a first shaft sleeved inside the bearing, a fixed plate welded to the top of the first shaft, and fixed blocks welded to the top of the fixed plate. The fixed blocks are symmetrically distributed. A second shaft sleeved inside the fixed blocks, and rollers fitted onto the surface of the second shaft. A fixed seat is fixedly connected to the surface of the pump body, and a handle is welded to the other end of the fixed seat. When short-distance movement of the centrifugal pump is required, the rollers can be placed on the ground, and the handle can be used as a force point to directly pull the pump. The bearings also provide a steering effect for the pump body, making movement very convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the fixed disk structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the limiting ring structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the support strip structure of this utility model;

[0021] Figure 5 For the present utility model Figure 3 Enlarged view of section A in the middle.

[0022] The markings in the diagram are as follows: 1. Centrifugal pump body; 2. Mounting plate; 3. Support bar; 4. Slide groove; 5. First external threaded rod; 6. Fixing bracket; 7. First nut; 8. Slide rod; 9. Extrusion turntable; 10. Mounting block; 11. Limiting groove; 12. Limiting ring; 13. Fixing plate; 14. Bearing; 15. First shaft; 16. Fixing plate; 17. Fixing block; 18. Second shaft; 19. Roller; 20. Second external threaded rod; 21. Second nut; 22. Snap ring; 23. Fixing seat; 24. Handle. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0027] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0028] To better understand the purpose, structure, and function of this utility model, a multi-stage centrifugal pump of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] like Figure 1-5As shown, this utility model discloses a multi-stage centrifugal pump, including a centrifugal pump body 1, a mounting plate 2 welded to the bottom of the centrifugal pump body 1, a fixing frame 6 mounted on the surface of the centrifugal pump body 1, a sliding rod 8 welded to the side of the fixing frame 6, and a support bar 3 provided on the outside of the centrifugal pump body 1. A sliding groove 4 is formed on the side of the support bar 3, and the sliding rod 8 is located inside the sliding groove 4. By installing the sliding rod 8 and forming the sliding groove 4, when the support bar 3 is moved using the sliding rod 8 and the sliding groove 4, the support bar 3 can move up and down and rotate, thereby allowing for adjustment of the support bar 3. The section is very convenient to use. The slide bar 8 has external threads on its surface, and the extrusion turntable 9 is sleeved on the surface of the slide bar 8. One end of the extrusion turntable 9 is attached to the side of the support bar 3. The support bar 3 is connected to the mounting block 10 through a rotating shaft. By installing the support bar 3 and the mounting block 10, after the support bar 3 is adjusted, the extrusion turntable 9 can be rotated until the extrusion turntable 9 clamps the support bar 3, thereby providing a fixing effect for the support bar 3. Finally, the mounting block 10 is used for installation. At this time, the support plate and the mounting block 10 can improve the installation strength and stability of the centrifugal pump after installation.

[0030] A fixed plate 13 is installed on the top of the centrifugal pump body 1, and a bearing 14 is installed on the top of the fixed plate 13. A first shaft 15 is sleeved inside the bearing 14. A fixed plate 16 is welded to the top of the first shaft 15, and a fixed block 17 is welded to the top of the fixed plate 16. The fixed blocks 17 are symmetrically distributed, and a second shaft 18 is sleeved inside the fixed block 17. A roller 19 is sleeved on the surface of the second shaft 18. A fixed seat 23 is fixedly connected to the surface of the centrifugal pump body 1, and a handle 24 is welded to the other end of the fixed seat 23. By installing the roller 19 and the handle 24, when the centrifugal pump needs to be moved a short distance, the roller 19 can be placed on the ground, and then the handle 24 can be used as the force point to directly pull the centrifugal pump to move it. The bearing 14 can also provide a steering effect for the centrifugal pump body 1, making it very convenient to move.

[0031] A first external threaded rod 5 is welded to the side of the centrifugal pump body 1. The first external threaded rod 5 passes through the fixing frame 6. A first nut 7 is sleeved on the surface of the first external threaded rod 5. One end of the first nut 7 is attached to the surface of the fixing frame 6. The first external threaded rods 5 are symmetrically distributed. By installing the first external threaded rods 5, when installing the fixing frame 6, the first external threaded rods 5 can pass through the fixing frame 6. Then, the first nut 7 is sleeved on the surface of the first external threaded rod 5 until the first nut 7 is attached to the surface of the fixing frame 6. At this time, the fixing frame 6 can be fixed and installed, and the fixing frame 6 can be installed and disassembled.

[0032] A second external threaded rod 20 is welded to the top of the centrifugal pump body 1. The second external threaded rod 20 passes through the fixed plate 13. A second nut 21 is sleeved on the surface of the second external threaded rod 20. One end of the second nut 21 is attached to the top of the fixed plate 13. When it is necessary to install the fixed plate 13, the second external threaded rod 20 can be used to pass through the fixed plate 13. Then, the second nut 21 is sleeved on the surface of the second external threaded rod 20 until one end of the second nut 21 is attached to the top of the fixed plate 13. At this time, the fixed plate 13 will be installed and the stability of the fixed plate 13 will be ensured.

[0033] A limiting ring 12 is welded to the surface of the slide bar 8, and a limiting groove 11 is opened inside the support bar 3. The limiting ring 12 is located inside the limiting groove 11. By installing the limiting ring 12 and the limiting groove 11, the limiting ring 12 and the limiting groove 11 can provide a limiting effect for the support bar 3, so that the support bar 3 will not wobble left and right, and has strong stability during use.

[0034] A retaining ring 22 is welded to the top of the centrifugal pump body 1. The retaining ring 22 is fitted with a fixed plate 13. The second external threaded rod 20 is distributed in a ring shape. By installing the retaining ring 22, the retaining ring 22 can provide a limiting effect for the fixed plate 13, thereby further improving the stability of the fixed plate 13 after installation. It has strong stability during use.

[0035] The working principle of this multistage centrifugal pump is as follows: First, the fixed plate 13 can be installed. This is done by inserting the second external threaded rod 20 through the fixed plate 13, and then fitting the second nut 21 onto the surface of the second external threaded rod 20 until one end of the second nut 21 is flush with the top of the fixed plate 13. At this point, the fixed plate 13 is installed and fixed. Next, the mounting bracket 6 can be installed. When installing the mounting bracket 6, the first external threaded rod 5 can be inserted through the mounting bracket 6, and then fitting the first nut 7 onto the surface of the first external threaded rod 5 until the first nut 7 is flush with the surface of the mounting bracket 6. This provides a secure installation for the mounting bracket 6. Afterward, the centrifugal pump can be moved to a suitable location. In terms of location, during movement, a fixed plate 13 is installed on the top of the centrifugal pump body 1, and a bearing 14 is installed on the top of the fixed plate 13. A first shaft 15 is sleeved inside the bearing 14, and a fixed plate 16 is welded to the top of the first shaft 15. A fixed block 17 is welded to the top of the fixed plate 16. At this time, the fixed blocks 17 are symmetrically distributed. A second shaft 18 is sleeved inside the fixed block 17, and a roller 19 is sleeved on the surface of the second shaft 18. At the same time, a fixed seat 23 is fixedly connected to the surface of the centrifugal pump body 1, and a handle 24 is welded to the other end of the fixed seat 23. When it is necessary to move the centrifugal pump a short distance, the roller 19 can be placed on the ground, and then the handle 24 can be used for movement. The centrifugal pump can be moved directly by pulling it through the handle 24, and the bearing 14 provides a steering effect for the pump body 1, making it very convenient to move. Afterwards, it can be installed. During installation, a mounting plate 2 is welded to the bottom of the pump body 1, and a fixing bracket 6 is installed on the surface of the pump body 1. A sliding rod 8 is welded to the side of the fixing bracket 6, and a support bar 3 is provided on the outside of the pump body 1. A groove 4 is opened on the side of the support bar 3, at which point the sliding rod 8 is located inside the groove 4. External threads are opened on the surface of the sliding rod 8, and a pressing disc 9 is fitted onto the surface of the sliding rod 8. At this time, one end of the pressing disc 9 is attached to the side of the support bar 3, and the support bar 3... The centrifugal pump is connected to the mounting block 10 via a rotating shaft. When installing the centrifugal pump, the mounting plate 2 can be used to install it in a suitable position first. Then, the sliding rod 8 and the sliding groove 4 are used to move the support bar 3. At this time, the sliding rod 8 and the sliding groove 4 can make the support bar 3 move up and down and rotate, thereby adjusting the support bar 3. When adjusting the support bar 3, ensure that the mounting block 10 is in contact with the ground. Then, rotate the squeezing turntable 9 until the squeezing turntable 9 clamps the support bar 3, thereby providing a fixing effect for the support bar 3. Finally, the mounting block 10 is used for installation. At this time, the support plate and the mounting block 10 can improve the installation strength and stability of the centrifugal pump after installation.

[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A multistage centrifugal pump, comprising a centrifugal pump body (1), characterized in that: The centrifugal pump body (1) has a mounting plate (2) welded to its bottom. A fixing frame (6) is mounted on the surface of the centrifugal pump body (1). A sliding rod (8) is welded to the side of the fixing frame (6). A support bar (3) is provided on the outside of the centrifugal pump body (1). A groove (4) is opened on the side of the support bar (3). The sliding rod (8) is located inside the groove (4). An external thread is opened on the surface of the sliding rod (8). A pressing turntable (9) is sleeved on the surface of the sliding rod (8). One end of the pressing turntable (9) is attached to the side of the support bar (3). The support bar (3) is connected to the mounting block (10) through a rotating shaft.

2. The multistage centrifugal pump according to claim 1, characterized in that: A fixing plate (13) is installed on the top of the centrifugal pump body (1), a bearing (14) is installed on the top of the fixing plate (13), a first shaft (15) is sleeved inside the bearing (14), a fixing plate (16) is welded to the top of the first shaft (15), a fixing block (17) is welded to the top of the fixing plate (16), the fixing blocks (17) are symmetrically distributed, a second shaft (18) is sleeved inside the fixing block (17), a roller (19) is sleeved on the surface of the second shaft (18), a fixing seat (23) is fixedly connected to the surface of the centrifugal pump body (1), and a handle (24) is welded to the other end of the fixing seat (23).

3. The multistage centrifugal pump according to claim 1, characterized in that: The centrifugal pump body (1) has a first external threaded rod (5) welded to its side. The first external threaded rod (5) passes through the fixing frame (6). A first nut (7) is sleeved on the surface of the first external threaded rod (5). One end of the first nut (7) is attached to the surface of the fixing frame (6). The first external threaded rod (5) is symmetrically distributed.

4. The multistage centrifugal pump according to claim 2, characterized in that: The centrifugal pump body (1) has a second external threaded rod (20) welded to the top. The second external threaded rod (20) passes through the fixed plate (13). A second nut (21) is sleeved on the surface of the second external threaded rod (20). One end of the second nut (21) is attached to the top of the fixed plate (13).

5. The multistage centrifugal pump according to claim 1, characterized in that: A limiting ring (12) is welded to the surface of the slide bar (8), and a limiting groove (11) is opened inside the support bar (3). The limiting ring (12) is located inside the limiting groove (11).

6. The multistage centrifugal pump according to claim 4, characterized in that: The centrifugal pump body (1) has a retaining ring (22) welded to the top, and a fixing disc (13) is sleeved inside the retaining ring (22). The second external threaded rod (20) is distributed in a ring shape.

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