Coupler of centrifugal pump

Abstract

The utility model discloses a coupler of a centrifugal pump. The coupler comprises a coupler body for the centrifugal pump and a centering assembly. The coupling body comprises a driving shaft sleeve body and a driven shaft sleeve body; the driving shaft sleeve body is connected with a motor shaft; the driven shaft sleeve body is connected with a pump shaft of the centrifugal pump, and the driven shaft sleeve body is connected with the driving shaft sleeve body through a flange plate; the centering assembly is arranged on the driving shaft sleeve body; the centering assembly comprises a rotating groove, a rotating cylinder and a movable groove; a rotating groove is formed in the side, close to the driven shaft sleeve body, of the driving shaft sleeve body. The rotating cylinder is arranged in the rotating groove in a penetrating manner; a movable groove is formed in the side, close to the driving shaft sleeve body, of the driven shaft sleeve body, and the rotating cylinder is matched with the movable groove in an inserted mode. The coupling of the centrifugal pump is simple and reasonable in structure and ingenious in design, careful adjustment of concentricity of a pump shaft and a motor shaft of the centrifugal pump is avoided, and complexity of installation of the driving shaft sleeve body and the driven shaft sleeve body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal pump technical field, concretely relates to a coupling of centrifugal pump. BACKGROUND

[0002] The centrifugal pump is a mechanical equipment for realizing liquid delivery by high-speed rotating impeller to make liquid obtain kinetic energy and pressure energy under the action of centrifugal force, and its core feature is to convert mechanical energy into kinetic energy and potential energy of fluid by using centrifugal force principle.

[0003] The utility model discloses a kind of couplings of centrifugal pump provided by Chinese utility model patent with publication No.CN220929991U, including first shaft seat and second shaft seat, the first shaft seat and second shaft seat one end are fixed with shaft sleeve, and first shaft seat other end is fixed with connecting block, the connecting block is connected between second shaft seat by screw thread, the outer surface of the first shaft seat and second shaft seat connecting portion is equipped with clamping sleeve.The utility model, by rotating the tightness of first bolt, the clamping sleeve is adjusted to the clamping degree of first shaft seat, second shaft seat connecting portion, rotating second shaft seat makes the distance between second shaft seat and first shaft seat increase, then coupling length increases, after adjusting to certain length, adjust clamping sleeve to clamp its connecting portion, make first shaft seat, second shaft seat connect fastening between, it can realize the adjustment of coupling overall length, need not extra customize different length coupling to be connected with use.

[0004] At present, the coupling of centrifugal pump on the market is mainly composed of driving shaft sleeve and driven shaft sleeve, when using, driving shaft sleeve is connected with motor shaft, driven shaft sleeve is connected with pump shaft, then, moving motor makes driving shaft sleeve contact with driven shaft sleeve, and then bolt is used to connect driving shaft sleeve with driven shaft sleeve, in the existing coupling, driving shaft sleeve and driven shaft sleeve need to be carefully adjusted the concentricity of pump shaft and motor shaft when installing, which not only increases the complexity and cost of installation, but also affects the use effect of coupling. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiencies of prior art, and provides a kind of coupling of centrifugal pump, to reach the purpose that the complexity of installation of driving shaft sleeve and driven shaft sleeve is reduced.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a coupling of centrifugal pump, including the coupling body and centering subassembly for centrifugal pump, the coupling body includes driving shaft sleeve body and driven shaft sleeve body, the driving shaft sleeve body is connected with motor shaft, the driven shaft sleeve body is connected with centrifugal pump pump shaft, and the driven shaft sleeve body is connected with driving shaft sleeve body through flange, the centering subassembly is arranged on driving shaft sleeve body, the centering subassembly includes rotation groove, rotation cylinder and movable slot, the driving shaft sleeve body is close to the rotation groove of driven shaft sleeve body side, the rotation cylinder is rotationally arranged in rotation groove, the driven shaft sleeve body is close to the movable slot of driving shaft sleeve body side, and the rotation cylinder and movable slot are inserted and are connected.

[0007] Preferably, the rotation cylinder cross section is L type structure, and the rotation cylinder is close to the size of driven shaft sleeve body one side size less than the rotation cylinder far from driven shaft sleeve body one side.

[0008] Preferably, the centering subassembly further includes anti-drop groove and fin, the movable slot is provided with anti-drop groove, the fin is fixed on the outer circumferential surface of rotation cylinder, and the fin and anti-drop groove are slidingly connected.

[0009] Preferably, the fin and anti-drop groove are spiral structure.

[0010] Preferably, further including connecting assembly, the connecting assembly is arranged on rotation cylinder.

[0011] Preferably, the connecting assembly includes connecting ring A and connecting ring B, the connecting ring A is fixed on the side of rotation cylinder close to driven shaft sleeve body, the connecting ring B is fixed on the inner side wall of movable slot, and the connecting ring B and connecting ring A are in contact.

[0012] Preferably, the connecting ring B and connecting ring A cross section are all ladder structure, and the connecting ring B ladder and connecting ring A ladder staggered arrangement.

[0013] Compared with prior art, the utility model has the advantages of:

[0014] 1. The utility model discloses a centering subassembly is set up, and the rotating cylinder is inserted into the movable groove, and makes the rib piece into the anti -drop groove, then, the driving shaft sleeve body is moved to the driven shaft sleeve body direction close to the driven shaft, and the rib piece slides in the anti -drop groove, because the rib piece and the anti -drop groove are all spiral structure, not only can improve the connecting strength between rotating cylinder and movable groove, make rotating cylinder and movable groove more stable, can also make rotating cylinder rotate in the rotating groove, because the rotating cylinder cross section is L type structure, can limit the position of rotating cylinder in the rotating groove, make rotating cylinder slide and rotate in the movable groove, until the rotating cylinder side and movable groove inboard contact, at this moment, the driving shaft sleeve body side and the driven shaft sleeve body side contact, then, through bolt flange disc on the driving shaft sleeve body and driven shaft sleeve body flange disc connection, relative to prior art, the utility model discloses simple and reasonable structure, clever design, through the rotating cylinder is inserted into the movable groove and the cooperation of rib piece and anti -drop groove, can avoid the need to carefully adjust the concentricity of centrifugal pump pump shaft and motor shaft, reduce the complexity of driving shaft sleeve body and driven shaft sleeve body installation.

[0015] 2. The utility model discloses a connecting ring A and connecting ring B are set up, when the driving shaft sleeve body side and the driven shaft sleeve body side contact, connecting ring B and connecting ring A contact, because connecting ring B and connecting ring A cross section are all ladder structure, can pass through the contact area between connecting ring B and connecting ring A is prolonged, improve the leakproofness between connecting ring B and connecting ring A, with lubricant coupling body with the probability of lubricant leakage caused by the failure of sealing element is reduced to the service life of coupling body is prolonged. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the whole structure section view of the utility model;

[0018] Figure 3 It is the whole structure split section view of the utility model;

[0019] Figure 4 It is the whole structure split section view of the utility model; Figure 2 Amplified schematic view of A place in

[0020] In the drawing:

[0021] 1, coupling body;2, centering subassembly;3, connecting component;101, driving shaft sleeve body;102, driven shaft sleeve body;201, rotating groove;202, rotating cylinder;203, movable groove;204, anti -drop groove;205, rib piece;301, connecting ring A;302, connecting ring B. SPECIFIC EMBODIMENTS

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those ordinarily skilled in the art without creative work under the premise that the scope of the present application is protected.

[0023] Please refer to Figures 1 to 4 The utility model provides a kind of technical scheme of centrifugal pump coupling, including the coupling body 1 and centering assembly 2 for centrifugal pump;Coupling body 1 includes driving shaft sleeve body 101 and driven shaft sleeve body 102;Driving shaft sleeve body 101 is connected with motor shaft;Driven shaft sleeve body 102 is connected with centrifugal pump pump shaft, and driven shaft sleeve body 102 is connected with driving shaft sleeve body 101 by flange, and the flange on driven shaft sleeve body 102 is connected with the flange on driving shaft sleeve body 101 by bolt;Centering assembly 2 is arranged on driving shaft sleeve body 101;

[0024] Centering assembly 2 includes rotating groove 201, rotating cylinder 202, movable groove 203, anti-drop groove 204 and rib 205;Driving shaft sleeve body 101 is provided with rotating groove 201 near the side of driven shaft sleeve body 102;Rotating cylinder 202 is rotatably arranged in rotating groove 201;Driven shaft sleeve body 102 is provided with movable groove 203 near the side of driving shaft sleeve body 101, and rotating cylinder 202 is inserted and matched with movable groove 203;Rotating cylinder 202 is L-shaped in cross section, and the size of the side of rotating cylinder 202 near driven shaft sleeve body 102 is less than the size of the side of rotating cylinder 202 away from driven shaft sleeve body 102;Anti-drop groove 204 is arranged in movable groove 203;Rib 205 is fixedly arranged on the outer circumferential surface of rotating cylinder 202, and rib 205 is slidably matched with anti-drop groove 204;Rib 205 and anti-drop groove 204 are both spiral structures.

[0025] The utility model discloses a set up centering subassembly 2, make the rib 205 insert into the anti -drop groove 204 in the movable slot 203 in and make the rib 205 slide in the anti -drop groove 204 to the driven shaft sleeve body 102 direction movement of the driving shaft sleeve body 101, the rib 205 and the anti -drop groove 204 are spiral structure, can improve the connecting strength between movable slot 203 and rotating cylinder 202, make movable slot 203 and rotating cylinder 202 more stable, can also make rotating cylinder 202 rotate in rotating groove 201, because the cross section of rotating cylinder 202 is L type structure, can limit the position of rotating cylinder 202 in rotating groove 201, make rotating cylinder 202 slide and rotate in movable slot 203, until rotating cylinder 202 side and movable slot 203 inner wall contact, at this moment, the side of driving shaft sleeve body 101 and the side of driven shaft sleeve body 102 contact, then, through bolt flange plate on driving shaft sleeve body 101 and driven shaft sleeve body 102 flange plate connection, relative to prior art, the utility model simple and reasonable structure, ingenious, through the cooperation of rotating cylinder 202 inserted into movable slot 203 and the rib 205 and the anti -drop groove 204, can avoid the need to carefully adjust the concentricity of centrifugal pump shaft and motor shaft, reduce the complexity of driving shaft sleeve body 101 and driven shaft sleeve body 102 installation.

[0026] As a preferred embodiment, it further comprises a connecting assembly 3; the connecting assembly 3 is arranged on the rotating cylinder 202; the connecting assembly 3 comprises a connecting ring A 301 and a connecting ring B 302; the connecting ring A 301 is fixedly arranged on the side of the rotating cylinder 202 close to the driven shaft sleeve body 102; the connecting ring B 302 is fixedly arranged on the inner wall of the movable slot 203, and the connecting ring B 302 is in contact with the connecting ring A 301; the connecting ring B 302 and the connecting ring A 301 are both made of rubber material; the cross sections of the connecting ring B 302 and the connecting ring A 301 are both step structures, and the step structures of the connecting ring B 302 and the connecting ring A 301 are staggered.

[0027] The utility model discloses a set up connecting ring A 301 and connecting ring B 302, when the side of driving shaft sleeve body 101 and the side of driven shaft sleeve body 102 contact, connecting ring B 302 and connecting ring A 301 contact, because the cross sections of connecting ring B 302 and connecting ring A 301 are both step structures, can pass through the extension of the contact area between connecting ring B 302 and connecting ring A 301, improve the sealing property between connecting ring B 302 and connecting ring A 301, to reduce the probability of lubricant leakage caused by the failure of sealing element with lubricant coupling body 1, thereby prolong the service life of coupling body 1.

[0028] Working principle: in use, insert the rotating cylinder 202 into the movable slot 203, and insert the rib 205 into the anti-off slot 204, then move the driving shaft sleeve body 101 to the driven shaft sleeve body 102 direction, make the rib 205 slide in the anti-off slot 204, because the rib 205 and the anti-off slot 204 are spiral structure, make the rotating cylinder 202 rotate in the rotating slot 201, make the rotating cylinder 202 slide and rotate in the movable slot 203, until the connecting ring B 302 contact with the connecting ring A 301, at this time, the side of the driving shaft sleeve body 101 contact with the side of the driven shaft sleeve body 102, then connect the flange plate on the driving shaft sleeve body 101 and the flange plate on the driven shaft sleeve body 102 through bolt.

[0029] The above is the working process of the whole device, and the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0030] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A coupling for a centrifugal pump, characterized in that, The system includes a coupling body (1) and a centering assembly (2) for a centrifugal pump; the coupling body (1) includes a driving bushing body (101) and a driven bushing body (102); the driving bushing body (101) is connected to the motor shaft; the driven bushing body (102) is connected to the centrifugal pump shaft, and the driven bushing body (102) is connected to the driving bushing body (101) via a flange; the centering assembly (2) is arranged on the driving bushing body (101); the centering assembly (2) is arranged on the driving bushing body (101); the centering assembly (2) is arranged on the driving bushing body (101); the driven bushing body (102) is connected to the centrifugal pump shaft, and the driven bushing body (102) is connected to the driving bushing body (101) via a flange. The core component (2) includes a rotating groove (201), a rotating cylinder (202), and a movable groove (203); the rotating groove (201) is provided on the side of the driving bushing body (101) near the driven bushing body (102); the rotating cylinder (202) is rotatably inserted into the rotating groove (201); the movable groove (203) is provided on the side of the driven bushing body (102) near the driving bushing body (101), and the rotating cylinder (202) is inserted into the movable groove (203).

2. The coupling for a centrifugal pump according to claim 1, characterized in that, The rotating cylinder (202) has an L-shaped cross-section, and the dimension of the rotating cylinder (202) on the side closer to the driven bushing body (102) is smaller than the dimension of the rotating cylinder (202) on the side farther away from the driven bushing body (102).

3. The coupling for a centrifugal pump according to claim 2, characterized in that, The centering component (2) further includes an anti-detachment groove (204) and a rib (205); the movable groove (203) is provided with an anti-detachment groove (204); the rib (205) is fixed on the outer circumferential surface of the rotating cylinder (202), and the rib (205) slides in cooperation with the anti-detachment groove (204).

4. The coupling for a centrifugal pump according to claim 3, characterized in that, Both the rib (205) and the anti-detachment groove (204) are spiral structures.

5. The coupling for a centrifugal pump according to claim 3, characterized in that, It also includes a connecting component (3); the connecting component (3) is arranged on the rotating cylinder (202).

6. The coupling for a centrifugal pump according to claim 5, characterized in that, The connecting assembly (3) includes a connecting ring A (301) and a connecting ring B (302); the connecting ring A (301) is fixed on the rotating cylinder (202) near the driven bushing body (102); the connecting ring B (302) is fixed on the inner wall of the movable groove (203) and the connecting ring B (302) is in contact with the connecting ring A (301).

7. The coupling for a centrifugal pump according to claim 6, characterized in that, Both the connecting ring B (302) and the connecting ring A (301) have stepped cross-sections, and the stepped shapes of the connecting ring B (302) and the connecting ring A (301) are staggered.

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