Horizontal multi-stage centrifugal pump

Abstract

The utility model discloses a horizontal multi-stage centrifugal pump, and relates to the field of centrifugal pumps. The horizontal multi-stage centrifugal pump comprises a base, a centrifugal pump body and a driving motor are mounted at the top of the base, the driving motor is in transmission connection with the centrifugal pump body, a plurality of spliced centrifugal units are arranged in the middle of the centrifugal pump body, and a quick-release mounting part is arranged on the centrifugal pump body. According to the horizontal type multi-stage centrifugal pump, the nut on the outer surface of the traction stud is unscrewed, then the threaded bolt is screwed out, at the moment, the pull rod is turned over and opened, the tailstock is pushed away from the pump head, maintenance gaps are formed among the multiple centrifugal units, the corresponding centrifugal units are convenient to take, meanwhile, the bottom supporting piece is used for supporting, the centrifugal units are prevented from scattering, and disassembly and assembly are convenient; the threaded plug pin and the positioning plug pin which are used for fixing the tailstock are both perpendicular to the assembling direction of the centrifugal unit, so that looseness is avoided in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal pump technical field, concretely is a horizontal multistage centrifugal pump. BACKGROUND

[0002] Horizontal multistage centrifugal pump compares with traditional single stage centrifugal pump, its inside is provided with multiple assembled centrifugal units, and the centrifugal unit is composed of the impeller connected in the casing inside by casing and bearing, and the casing is mutually spliced to form the pump outer casing, and the impeller realizes transmission by the front and rear plug-in of the rotating shaft in use, and the motor drives the rotation of the shaft rod in the pump head, thereby making multiple impellers rotate synchronously.

[0003] However, the existing horizontal multistage centrifugal pump, its installation mode is fixed by installing multiple pull screws between the pump head and the tail seat, so that the casings of multiple centrifugal units remain sealed when connected in turn, however, in the actual application process, two problems are found, on the one hand, the axial direction of the screw rod is the same as the splicing direction of the centrifugal unit, in use, multiple centrifugal units are easily extruded due to vibration, and this part of force is easy to cause the screw rod to loosen, on the other hand, the overall maintenance process is inconvenient to disassemble, all the screw rods need to be removed, at this time, multiple centrifugal units lose support and are easily scattered, and need to be assembled one by one after the entire centrifugal pump is stood up, and in the assembled state, the base of the centrifugal pump is in a fixed state with the outside, so the centrifugal pump base also needs to be completely disassembled, which is very troublesome, therefore, a horizontal multistage centrifugal pump is provided to solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a horizontal multistage centrifugal pump, which solves the problems of the existing horizontal multistage centrifugal pump, i.e. on the one hand, the pull screw for fixing is prone to loosening, leading to leakage, and on the other hand, the maintenance process is inconvenient to disassemble.

[0005] To achieve the above purpose, the utility model is implemented by the following technical scheme: a horizontal multistage centrifugal pump, comprising a base, a centrifugal pump body and a driving motor are installed on the top of the base, the driving motor is in transmission connection with the centrifugal pump body, a plurality of spliced centrifugal units are arranged in the middle part of the centrifugal pump body, and a quick-release mounting piece is arranged on the centrifugal pump body;

[0006] The quick-release mounting piece comprises;

[0007] A bottom support piece is arranged below the centrifugal unit for supporting the centrifugal unit;

[0008] A pull rod is installed on the upper part of the centrifugal unit for clamping multiple groups of centrifugal units, and the pull rod is installed in a way that one end is hinged and the other end is clamped;

[0009] The pull rod and the bottom support form a combined space for wrapping multiple sets of centrifugal units.

[0010] Preferably, the centrifugal pump body comprises a pump head and a tail seat, the centrifugal unit is inserted between the pump head and the tail seat, and the pump head, the tail seat and the centrifugal unit are drivingly connected.

[0011] Preferably, one end of the bottom support is fixedly arranged on the side wall of the pump head, and the other end of the bottom support penetrates the lower end of the tail seat.

[0012] Preferably, a driving lead screw is arranged below the bottom support, one end of the driving lead screw is bearingly connected in the side wall of the pump head, and the other end of the driving lead screw is threadedly connected in the side wall of the tail seat.

[0013] Preferably, a foot seat is fixedly welded on the upper outer wall of the pump head, a fixing seat is fixedly welded on the upper outer wall of the tail seat, one end of the pull rod is rotatably connected in the foot seat, and the other end of the pull rod is movably clamped in the fixing seat.

[0014] Preferably, a threaded bolt is threadedly connected in the side wall of the fixing seat and penetrates the pull rod.

[0015] Preferably, a pulling stud is fixedly welded at the end of the pull rod, a baffle is movably sleeved on the outer surface of the pulling stud, the baffle abuts against the end of the fixing seat, and a nut is arranged on the pulling stud.

[0016] Preferably, a positioning portion is welded on the outer wall of the centrifugal unit, and a positioning block is welded on the outer wall of the pull rod and movably inserted in the positioning portion.

[0017] Preferably, a positioning rail is fixedly arranged on the base, the tail seat is slidably connected on the positioning rail, positioning holes are arranged on the two sides of the positioning rail, and positioning bolts are threadedly arranged on the two sides of the tail seat and movably inserted in the positioning holes.

[0018] The utility model discloses a horizontal multistage centrifugal pump, which has the following beneficial effects: the quick-release mounting part is arranged, so that the bottoms of the multiple centrifugal units are supported by the bottom support, when disassembling, the nut on the outer surface of the pulling stud is loosened, then the threaded bolt is screwed out, at this time, the pull rod is turned over to open, the tail seat is pushed away from the pump head, a maintenance gap is formed between the multiple centrifugal units, the corresponding centrifugal unit is conveniently taken, the centrifugal units are supported by the bottom support, so that the centrifugal units are prevented from falling off and are conveniently disassembled, and the threaded bolt and the positioning bolt for fixing the tail seat are perpendicular to the assembly direction of the centrifugal units, so that loosening is avoided during use. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall outer surface structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the centrifugal pump body structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the base structure of this utility model;

[0023] Figure 4 This utility model Figure 2 Enlarged view of part A of the structure.

[0024] In the diagram: 1. Base; 12. Positioning rail; 13. Positioning hole; 2. Drive motor; 3. Centrifugal pump body; 31. Pump head; 32. Tailstock; 33. Centrifugal unit; 34. Quick-release mounting piece; 341. Pull rod; 342. Base support; 343. Positioning block; 344. Positioning part; 345. Foot; 346. Baffle; 347. Fixed seat; 348. Pulling stud; 349. Threaded pin; 35. Positioning pin; 36. Drive screw. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] This application provides a horizontal multistage centrifugal pump that solves the problems of existing horizontal multistage centrifugal pumps, such as the ease with which the tie rods used for fixing can loosen and cause leakage, and the inconvenience of disassembly and assembly during maintenance.

[0027] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0028] This utility model discloses a horizontal multistage centrifugal pump.

[0029] According to the appendix Figures 1-4As shown, the pump includes a base 1, a centrifugal pump body 3 and a drive motor 2 mounted on the top of the base 1. The drive motor 2 is connected to the centrifugal pump body 3. Multiple spliced ​​centrifugal units 33 are arranged in the middle of the centrifugal pump body 3. Each centrifugal unit 33 consists of a housing and an impeller connected to the housing with bearings inside the housing. The housings are spliced ​​together to form the pump housing. The impellers are driven by the front and rear insertion of the rotating shaft in the pump head 31. In use, the drive motor 2 drives the shaft in the pump head 31 to rotate, thereby making the multiple impellers rotate synchronously.

[0030] The centrifugal pump body 3 is equipped with a quick-release mounting component 34;

[0031] Quick-release mounting component 34 includes;

[0032] The bottom support 342 is disposed below the centrifugal unit 33 to support the centrifugal unit 33;

[0033] The pull rod 341 is installed on the upper part of the centrifuge unit 33 and is used to clamp multiple centrifuge units 33. The pull rod 341 is installed by hinge at one end and snap-fit ​​at the other end.

[0034] The pull rod 341 and the base support 342 form an enclosing space to enclose multiple centrifugal units 33.

[0035] During maintenance, the pull rod 341 is flipped open, and then the centrifugal unit 33 is pushed on the base support 342 to create maintenance gaps between multiple centrifugal units 33, making it convenient to take out the corresponding centrifugal unit 33 for maintenance.

[0036] The centrifugal pump body 3 includes a pump head 31 and a tail seat 32. The centrifugal unit 33 is inserted between the pump head 31 and the tail seat 32, and the pump head 31, the tail seat 32 and the centrifugal unit 33 are connected by a drive. One end of the bottom support 342 is fixedly set on the side wall of the pump head 31, and the other end of the bottom support 342 passes through the lower end of the tail seat 32. The tail seat 32 supports the end of the bottom support 342, ensuring that the multiple centrifugal units 33 are in a horizontal state when assembled, and improving the sealing effect at the connection.

[0037] A drive screw 36 is installed below the base support 342. One end of the drive screw 36 is connected to the side wall of the pump head 31 by a bearing, and the other end of the drive screw 36 is threaded to the side wall of the tailstock 32. A positioning rail 12 is fixedly installed on the base 1, and the tailstock 32 is slidably connected to the positioning rail 12. Positioning holes 13 are opened on both sides of the positioning rail 12. Positioning pins 35 are threaded on both sides of the tailstock 32 and are movably inserted into the positioning holes 13. When disassembling and assembling, the tailstock 32 slides away from the pump head 31 along the positioning rail 12 by rotating the drive screw 36 counterclockwise.

[0038] A foot 345 is fixedly welded to the upper outer wall of the pump head 31, and a fixed seat 347 is fixedly welded to the upper outer wall of the tailstock 32. One end of the pull rod 341 is rotatably connected to the foot 345, and the other end of the pull rod 341 is movably engaged in the fixed seat 347. A threaded pin 349 is threadedly connected to the side wall of the fixed seat 347. The threaded pin 349 passes through the pull rod 341 and is perpendicular to the pull rod 341 to prevent the pull rod 341 from loosening due to vibration between multiple centrifugal units 33.

[0039] A pull stud 348 is fixedly welded to the end of the pull rod 341. A baffle 346 is movably sleeved on the outer surface of the pull stud 348. The baffle 346 abuts against the end of the fixed seat 347. A nut is installed on the pull stud 348. When assembling the threaded pin 349, the pull stud 348 is moved away from the foot seat 345 by turning the nut clockwise, thereby clamping the multiple centrifugal units 33 together. At the same time, the mounting hole on the pull rod 341 for fixing is aligned with the threaded pin 349, which facilitates the installation of the threaded pin 349.

[0040] The outer wall of the centrifugal unit 33 is welded with a positioning part 344, and the outer wall of the pull rod 341 is welded with a positioning block 343. The positioning block 343 is movably inserted into the positioning part 344, so that the base 1 and the tail seat 32 remain fixed.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A horizontal multistage centrifugal pump, comprising a base (1), wherein a centrifugal pump body (3) and a drive motor (2) are mounted on the top of the base (1), the drive motor (2) being connected to the centrifugal pump body (3) in a transmission connection, and a plurality of spliced ​​centrifugal units (33) are provided in the middle of the centrifugal pump body (3), characterized in that, The centrifugal pump body (3) is provided with a quick-release mounting component (34); The quick-release mounting component (34) includes; A bottom support (342) is disposed below the centrifugal unit (33) to support the centrifugal unit (33); A pull rod (341) is installed on the upper part of the centrifugal unit (33) to clamp multiple centrifugal units (33). The pull rod (341) is installed by hinge at one end and snap-fit ​​at the other end. The pull rod (341) and the base support (342) form an enclosing space for wrapping multiple centrifugal units (33).

2. A horizontal multistage centrifugal pump according to claim 1, characterized in that: The centrifugal pump body (3) includes a pump head (31) and a tailstock (32), and the centrifugal unit (33) is inserted between the pump head (31) and the tailstock (32), and the pump head (31), the tailstock (32) and the centrifugal unit (33) are connected in a driving manner.

3. A horizontal multistage centrifugal pump according to claim 2, characterized in that: One end of the bottom support (342) is fixedly mounted on the side wall of the pump head (31), and the other end of the bottom support (342) passes through the lower end of the tailstock (32).

4. A horizontal multistage centrifugal pump according to claim 3, characterized in that: A drive screw (36) is installed below the base support (342). One end of the drive screw (36) is connected to the side wall of the pump head (31) by a bearing, and the other end of the drive screw (36) is threaded to the side wall of the tailstock (32).

5. A horizontal multistage centrifugal pump according to claim 2, characterized in that: The upper outer wall of the pump head (31) is fixedly welded with a foot (345), the upper outer wall of the tailstock (32) is fixedly welded with a fixed seat (347), one end of the pull rod (341) is rotatably connected in the foot (345), and the other end of the pull rod (341) is movably engaged in the fixed seat (347).

6. A horizontal multistage centrifugal pump according to claim 5, characterized in that: A threaded pin (349) is threadedly connected to the side wall of the fixed base (347), and the threaded pin (349) passes through the pull rod (341).

7. A horizontal multistage centrifugal pump according to claim 6, characterized in that: The end of the pull rod (341) is fixedly welded with a pull stud (348), and a baffle (346) is movably sleeved on the outer surface of the pull stud (348). The baffle (346) abuts against the end of the fixed seat (347), and a nut is installed on the pull stud (348).

8. A horizontal multistage centrifugal pump according to claim 6, characterized in that: The centrifugal unit (33) has a positioning part (344) welded to its outer wall, and the pull rod (341) has a positioning block (343) welded to its outer wall. The positioning block (343) is movably inserted into the positioning part (344).

9. A horizontal multistage centrifugal pump according to claim 2, characterized in that: A positioning rail (12) is fixedly installed on the base (1), and the tailstock (32) is slidably connected to the positioning rail (12). Positioning holes (13) are opened on both sides of the positioning rail (12), and positioning pins (35) are threadedly installed on both sides of the tailstock (32). The positioning pins (35) are movably inserted into the positioning holes (13).

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