Bandage tensioner

Abstract

The utility model belongs to the technical field of multi-stage centrifugal pumps, particularly relates to a bandage tensioner, and aims to solve the problem that a multi-stage centrifugal pump provided by the background technology cannot operate due to vibration and collision during transportation, and adopts the scheme that the bandage tensioner comprises a pump shell, a base is welded on the outer wall of the bottom of the pump shell, and a motor fixing frame is arranged on the outer wall of the top of the pump shell; a flow guide component is installed at the bottom of the inner wall of the pump shell. According to the multi-stage centrifugal pump, the multiple tensioning belts are arranged in the pump shell of the multi-stage centrifugal pump, the tensioning belts can effectively prevent components in the pump shell from moving, the tensioning belts can enable all the components to be in a compressed state all the time, firmness and reliability are achieved, the service life of the multi-stage centrifugal pump is prolonged, the tensioning belts are mutually connected, and the service life of the multi-stage centrifugal pump is prolonged. And the tightening belt is fixed through the fastening nut and the flow guide component, so that the whole structure is more stable, displacement of internal components caused by vibration and impact of the water pump in the transportation process is avoided, and the use stability of the multistage centrifugal pump is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-stage centrifugal pumps, in particular to a strap tensioner. Background Art

[0002] A multistage centrifugal pump is a special type of centrifugal pump that consists of two or more centrifugal pumps, each working independently but sharing the same shaft. This type of pump is typically used in high-pressure applications such as water supply systems, pressurized systems, and high-pressure cleaning systems.

[0003] A multi-stage centrifugal pump was found to have some issues after assembly. The pump had passed factory testing, but when it was delivered to the customer, it failed to operate. Analysis revealed that vibration and impact during transportation had caused internal components to shift, rendering it unusable. Utility Model Content

[0004] In view of the deficiencies of the existing technology, the utility model provides a strap tensioner, which overcomes the deficiencies of the existing technology and effectively solves the problem that a multi-stage centrifugal pump cannot operate due to vibration and impact during transportation.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A strap tensioner comprises a pump housing, a base welded to the bottom outer wall of the pump housing, a motor mounting bracket provided on the top outer wall of the pump housing, a flow guide component installed at the bottom of the inner wall of the pump housing, equidistantly distributed tensioning straps installed on the top of the flow guide component, and fastening nuts fixedly connected between the tensioning straps and the pump housing;

[0007] The inner wall of the motor fixing frame is rotatably connected to the motor main shaft, and the center of the inner wall of the pump casing is rotatably connected to the rotating shaft. A coupling is fixedly connected between the motor main shaft and the rotating shaft. The outer wall of the rotating shaft is installed with impellers distributed at equal distances, and the tensioning belt is arranged on the outside of the impeller.

[0008] Preferably, a water inlet pipe and a water outlet pipe are respectively provided on both sides of the outer wall of the base.

[0009] Preferably, a water inlet section is provided on a side of the pump casing close to the water inlet pipe, and a water outlet section is provided on a side of the pump casing close to the water outlet pipe.

[0010] Preferably, a water retaining sleeve is installed on the inner wall of the motor fixing frame at the top of the coupling.

[0011] Preferably, symmetrically distributed fastening screws are fixedly connected between the motor fixing bracket and the pump casing.

[0012] Preferably, a thrust ring bearing is installed on the inner wall of the top of the pump housing at the intersection of the coupling and the rotating shaft.

[0013] The beneficial effects of the utility model are:

[0014] 1. The design of the belt tensioner sets multiple tensioning belts inside the pump casing of the multi-stage centrifugal pump. The tensioning belts can effectively prevent the internal components of the pump casing from moving. The tensioning belts can always keep the components in a compressed state, which is firm and reliable, and prolongs the service life of the equipment.

[0015] 2. The strap tensioner of this design connects the tensioning straps to each other, and uses fastening nuts and guide components to fix the tensioning straps, making the entire structure more stable, avoiding vibration and impact of the water pump during transportation that may cause displacement of internal components, and ensuring the stability of the multi-stage centrifugal pump during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a strap tensioner proposed by the utility model;

[0017] Figure 2 This is a partial structural diagram of a strap tensioner proposed in this utility model Figure 1 ;

[0018] Figure 3 This is a partial structural diagram of a strap tensioner proposed in this utility model Figure 2 .

[0019] In the figure: 1. Pump casing; 2. Base; 3. Motor fixing bracket; 4. Flow guide component; 5. Tensioning belt; 6. Fastening nut; 7. Motor main shaft; 8. Coupling; 9. Rotating shaft; 10. Impeller; 11. Water inlet pipe; 12. Water outlet pipe; 13. Water inlet section; 14. Water outlet section; 15. Water retaining sleeve; 16. Fastening screw; 17. Thrust ring bearing. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1, refer to Figure 1-3 A strap tensioner comprises a pump casing 1, a base 2 is welded to the bottom outer wall of the pump casing 1, a motor fixing bracket 3 is provided on the top outer wall of the pump casing 1, a flow guide component 4 is installed at the bottom of the inner wall of the pump casing 1, and tensioning belts 5 distributed at equal distances are installed on the top of the flow guide component 4, and a fastening nut 6 is fixedly connected between the tensioning belt 5 and the pump casing 1.

[0022] In this embodiment, a plurality of tensioning belts 5 are provided inside the pump casing 1 of the multi-stage centrifugal pump. The tensioning belts 5 can effectively prevent the internal components of the pump casing 1 from moving. The tensioning belts 5 can always keep the components in a compressed state, which is firm and reliable, thereby increasing the service life of the equipment.

[0023] Example 2, refer to Figure 2-3 A belt tensioner, the inner wall of the motor fixing frame 3 is rotatably connected to the motor main shaft 7, and the center of the inner wall of the pump casing 1 is rotatably connected to the rotating shaft 9, a coupling 8 is fixedly connected between the motor main shaft 7 and the rotating shaft 9, and the outer wall of the rotating shaft 9 is installed with equally distributed impellers 10, and the tensioning belt 5 is arranged on the outside of the impeller 10.

[0024] In this embodiment, the tensioning belts 5 are interconnected, and the fastening nuts 6 and the guide components 4 are used to fix the tensioning belts 5, making the entire structure more stable, preventing the water pump from being vibrated and impacted during transportation, causing displacement of internal components, and ensuring the stability of the multi-stage centrifugal pump during use.

[0025] Reference Figure 1 A water inlet pipe 11 and a water outlet pipe 12 are respectively provided on both sides of the outer wall of the base 2.

[0026] Reference Figure 1 A water inlet section 13 is provided on the side of the pump casing 1 close to the water inlet pipe 11 , and a water outlet section 14 is provided on the side of the pump casing 1 close to the water outlet pipe 12 .

[0027] Reference Figure 2 A water retaining sleeve 15 is installed on the inner wall of the motor fixing frame 3 at the top of the coupling 8.

[0028] Reference Figure 1-2 The motor fixing frame 3 and the pump housing 1 are fixedly connected with symmetrically distributed fastening screws 16 .

[0029] Reference Figure 2-3 A thrust ring bearing 17 is installed on the inner wall of the top of the pump housing 1 at the junction of the coupling 8 and the rotating shaft 9.

[0030] Working principle: The outside of the multi-stage centrifugal pump is mainly divided into a motor fixing frame 3, a pump casing 1 and a base 2 from top to bottom. After the motor is installed on the motor fixing frame 3, the motor drives the rotating shaft 9 to rotate, and the multi-stage impeller 10 can realize the centrifugal operation of the fluid. Since multiple tensioning belts 5 are arranged inside the pump casing 1 of the multi-stage centrifugal pump, the tensioning belts 5 are interconnected and fixed with fastening nuts 6 and guide components 4. The tensioning belts 5 can effectively prevent the internal components of the pump casing 1 from moving. The tensioning belts 5 can always keep the components in a compressed state, which is firm and reliable.

[0031] 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 can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A strap tensioner, comprising a pump housing (1), characterized in that: A base (2) is welded to the bottom outer wall of the pump housing (1), and a motor fixing frame (3) is provided on the top outer wall of the pump housing (1); a flow guide component (4) is installed at the bottom of the inner wall of the pump housing (1); tensioning bands (5) distributed at equal distances are installed on the top of the flow guide component (4), and a fastening nut (6) is fixedly connected between the tensioning band (5) and the pump housing (1); The inner wall of the motor fixing frame (3) is rotatably connected to a motor main shaft (7), and the center of the inner wall of the pump housing (1) is rotatably connected to a rotating shaft (9), a coupling (8) is fixedly connected between the motor main shaft (7) and the rotating shaft (9), and the outer wall of the rotating shaft (9) is equipped with impellers (10) distributed at equal distances, and a tensioning belt (5) is arranged outside the impeller (10).

2. A strap tensioner according to claim 1, characterized in that: A water inlet pipe (11) and a water outlet pipe (12) are respectively provided on both sides of the outer wall of the base (2).

3. The strap tensioner according to claim 1, characterized in that: A water inlet section (13) is provided on a side of the pump casing (1) close to the water inlet pipe (11), and a water outlet section (14) is provided on a side of the pump casing (1) close to the water outlet pipe (12).

4. The strap tensioner according to claim 1, characterized in that: A water retaining sleeve (15) is installed on the inner wall of the motor fixing frame (3) at the top of the coupling (8).

5. The strap tensioner according to claim 1, characterized in that: Symmetrically distributed fastening screws (16) are fixedly connected between the motor fixing frame (3) and the pump housing (1).

6. The strap tensioner according to claim 1, characterized in that: A thrust ring bearing (17) is installed on the inner wall of the top of the pump housing (1) at the junction of the coupling (8) and the rotating shaft (9).

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