Balancing drum of self-balancing pump

Abstract

A balancing drum of a self-balancing pump comprises a balancing drum body, a main shaft assembling space is arranged on the balancing drum body, a locking component is arranged in the main shaft assembling space and is a locking shaft sleeve, a side edge assembling groove is formed in one side of the balancing drum body, and a side edge locking plate is arranged in the side edge assembling groove. The installation stability of the balance drum can be further reinforced, the side edge locking plates provide supporting points so that the balance drum can be more stable in the operation process, the side edge locking plates can be firmly fixed in the side edge assembling grooves through the locking screws and are prevented from loosening or falling off, meanwhile, the positions of the side edge locking plates can be conveniently adjusted through the locking screws, and the installation stability of the balance drum is improved. Therefore, different installation requirements can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water pump assembly, concretely relates to a self-balancing pump balance drum. BACKGROUND

[0002] The self-balancing pump balance drum is a key component for balancing axial force in a multi-stage centrifugal pump, and is usually installed behind the last-stage impeller and rotates with the shaft. A small radial gap is formed between the outer surface of the balance drum and the shell. When the pump is in operation, part of the medium is transported to the outlet of the main pump, and part of the medium flows to the balance drum. Since the front of the balance drum is a high-pressure area of the last-stage impeller, and the rear of the balance drum is connected to the inlet of the pump through a balance pipe, the pressure is approximately the inlet pressure, thus a pressure difference is formed between the two sides of the balance drum, generating a backward axial thrust, which is opposite to the axial thrust generated by the impeller, thereby partially or completely offsetting the axial thrust of the impeller, reducing the load of the bearing, and making the pump shaft in a better balanced state.

[0003] In the prior art, a balance drum mechanism of a pump is disclosed in CN201721414481.6, which includes a balance sleeve and a balance drum inside the balance sleeve, a first inner pipe, at least one strip-shaped opening parallel to the axis of the first inner pipe, one of the openings being a connecting opening, one end of the connecting opening being fixedly connected to the balance sleeve, a second inner pipe arranged between the first inner pipe and the balance drum, one strip-shaped opening parallel to the axis of the second inner pipe, the opening corresponding to the connecting opening of the first inner pipe, one end of the opening being fixedly connected to the balance sleeve, the outer radial end of a gasket being embedded in the annular groove of the inner circumferential wall of the balance sleeve, the outer radial surface and the inner radial surface of the gasket being embedded in the circumferential opening of the first inner pipe, and the inner radial end surface of the gasket having a gap with the first inner pipe.

[0004] The prior art has the advantages of small leakage amount and high balancing force, but also has the problem of poor local sealing performance. UTILITY MODEL CONTENTS

[0005] In order to overcome the poor sealing performance of the prior art, the utility model provides a self-balancing pump balance drum.

[0006] The utility model adopts the following technical scheme: a self-balancing pump balance drum, which comprises a balance drum, a main shaft assembly space is arranged on the balance drum, a locking component is arranged in the main shaft assembly space, the locking component is a locking shaft sleeve, a side edge assembly groove is arranged on one side of the balance drum, a side edge locking plate is arranged in the side edge assembly groove, a locking screw is arranged between the side edge locking plate and the side edge assembly groove, a sealing component is arranged on one side of the side edge locking plate, the sealing component is a sealing rubber pad, and an adhesive sheet is arranged between the sealing rubber pad and the side edge locking plate.

[0007] The locking sleeve is a circular locking sleeve, the circular locking sleeve is clamped into the main shaft assembly space, and the main shaft assembly space is provided with a clamping groove.

[0008] The clamping groove arranged in the main shaft assembly space is divided into a top clamping groove and a bottom clamping groove, the circular locking sleeve is provided with a clamping block, and the clamping block is clamped into the top clamping groove and the bottom clamping groove respectively.

[0009] The front guiding part is a front guiding pipe, and the front guiding pipe and the balance drum are fixed by welding.

[0010] The front guiding pipe is provided with a guiding groove, one side of the guiding groove is provided with a check assembly, and the check assembly is a check rubber block.

[0011] Compared with the prior art, the circular locking sleeve can be closely matched with the main shaft assembly space, stable support and positioning are provided, the circular structure is helpful to uniformly distribute stress, stress concentration is reduced, the stability and reliability of the structure are improved, the top clamping groove and the bottom clamping groove in the main shaft assembly space and the clamping block on the circular locking sleeve are matched with each other, accurate positioning is formed, the rotation and displacement of the locking sleeve in the main shaft assembly space can be effectively prevented, the stable installation of the balance drum is ensured, the installation stability of the balance drum can be further reinforced through the side edge locking plate in the side edge assembly groove, the side edge locking plate provides a support point, so that the balance drum is more stable during operation, the use of the locking screw enables the side edge locking plate to be fixed in the side edge assembly groove firmly, and the side edge locking plate is prevented from loosening or falling off, meanwhile, the locking screw is convenient for adjusting the position of the side edge locking plate, so that different installation requirements can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the utility model;

[0013] Figure 2 is a structural schematic view of the utility model;

[0014] Figure 3 is a structural schematic view of the utility model;

[0015] Figure 4 is a sectional view of the utility model;

[0016] In the drawing: 1 is a balance drum, 2 is a main shaft assembly space, 3 is a locking sleeve, 4 is a side edge assembly groove, 5 is a side edge locking plate, 6 is an adhesive sheet, 7 is a sealing rubber gasket, 8 is a top clamping groove, 9 is a bottom clamping groove, 10 is a clamping block, 11 is a front guiding pipe, and 12 is a check rubber block. DETAILED DESCRIPTION

[0017] The utility model is further described below in combination with the drawings and specific embodiments, and it should be noted that the embodiments described below or the technical features can be combined to form new embodiments without conflict.

[0018] The self-balancing pump balancing drum comprises a balancing drum 1, a main shaft assembly space 2 is arranged on the balancing drum 1, a locking part in the form of a locking shaft sleeve 3 is arranged in the main shaft assembly space 2, a side edge assembly groove 4 is arranged on one side of the balancing drum 1, a side edge locking plate 5 is arranged in the side edge assembly groove 4, locking screws are arranged between the side edge locking plate 5 and the side edge assembly groove 4, the side edge locking plate in the side edge assembly groove 4 can further reinforce the installation stability of the balancing drum 1, the side edge locking plate 5 provides a support point, so that the balancing drum 1 is more stable during operation, the use of the locking screws enables the side edge locking plate 5 to be firmly fixed in the side edge assembly groove 4, preventing loosening or falling off, and the locking screws also facilitate adjustment of the position of the side edge locking plate to adapt to different installation requirements, a sealing part in the form of a sealing rubber pad 7 is arranged on one side of the side edge locking plate 5, and an adhesive sheet 6 is arranged between the sealing rubber pad 7 and the side edge locking plate 5; the sealing rubber pad 7 arranged on one side of the side edge locking plate 5 can effectively prevent liquid or gas leakage and improve sealing performance. The sealing rubber pad 7 has good elasticity and corrosion resistance and can adapt to different working environments, and the adhesive sheet between the sealing rubber pad 7 and the side edge locking plate 5 can enhance the connection strength therebetween and prevent the sealing rubber pad from falling off or shifting during use.

[0019] The locking shaft sleeve 3 is a circular locking shaft sleeve, which is clamped into the main shaft assembly space 2, can be tightly matched with the main shaft assembly space 2, provides stable support and positioning, the circular structure helps to uniformly distribute stress, reduces stress concentration, improves the stability and reliability of the structure, the top clamping groove 8 and the bottom clamping groove 9 in the main shaft assembly space 2 are matched with the clamping blocks on the circular locking shaft sleeve, form accurate positioning, can effectively prevent the locking shaft sleeve 3 from rotating and shifting in the main shaft assembly space 2, and ensure the stability of the balancing drum, a clamping groove is arranged in the main shaft assembly space 2, the clamping groove arranged in the main shaft assembly space is divided into a top clamping groove 8 and a bottom clamping groove 9, clamping blocks 10 are arranged on the circular locking shaft sleeve, and the clamping blocks 10 are respectively clamped into the top clamping groove 8 and the bottom clamping groove 9.

[0020] The front guiding part of the balance drum is a front guiding pipe 11, which is fixed with the balance drum by welding, and is provided with a guiding groove, and the guiding groove is provided with a check component, which is a check rubber block 12.

[0021] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A self-balancing pump balancing drum, comprising a balancing drum, a main shaft assembly space provided on the balancing drum, a locking component provided within the main shaft assembly space, the locking component being a locking bushing, a side mounting groove provided on one side of the balancing drum, a side locking plate provided within the side mounting groove, and a locking screw provided between the side locking plate and the side mounting groove, characterized in that: The side locking plate is provided with a sealing part on one side, the sealing part is a sealing rubber, and an adhesive sheet is arranged between the sealing rubber and the side locking plate.

2. A self-balancing pump balancing drum according to claim 1, wherein: The locking sleeve is a circular locking sleeve, the circular locking sleeve is clamped into the main shaft assembly space, and the main shaft assembly space is provided with clamping grooves.

3. A self-balancing pump balancing drum according to claim 2, wherein: The clamping grooves arranged in the main shaft assembly space are divided into top clamping grooves and bottom clamping grooves, the circular locking sleeve is provided with clamping blocks, and the clamping blocks are clamped into the top clamping grooves and the bottom clamping grooves respectively.

4. A self-balancing pump balancing drum according to claim 1, wherein: The balance drum is provided with a front guide part on one side, the front guide part is a front guide pipe, and the front guide pipe and the balance drum are fixed by welding.

5. A self-balancing pump balancing drum according to claim 4, wherein: The front guide pipe is provided with a guide groove, one side of the guide groove is provided with a check assembly, and the check assembly is a check rubber.

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