CN114215787B

CN114215787B - Angle-adjustable partition tongue assembly and centrifugal pump

Info

Publication number: CN114215787B
Application number: CN202111632523.4A
Authority: CN
Inventors: 杨树华; 付强; 王晟旻; 刘雷; 沙龙; 苑克文; 陈扬; 朱荣生; 王秀礼
Original assignee: Shenyang Turbo Machinery Co Ltd
Current assignee: Shenyang Turbo Machinery Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2023-06-30
Anticipated expiration: 2041-12-28
Also published as: CN114215787A

Abstract

The application provides an angularly adjustable separates tongue subassembly and centrifugal pump, including spiral case, separate tongue and coupling assembling, separate the tongue with coupling assembling fixed connection, separate the tongue through coupling assembling can rotationally set up on the inner wall of spiral case to can fix on predetermineeing the position, coupling assembling's part stretches out to the outside of spiral case can solve unable regulation when the pump normally works, and then not only increases the degree of difficulty of operation when adjusting, and reduces work efficiency's problem.

Description

Angle-adjustable partition tongue assembly and centrifugal pump

Technical Field

The application belongs to the technical centrifugal pump field, and in particular relates to an angle-adjustable partition tongue assembly and a centrifugal pump.

Background

Centrifugal pumps are very widely used hydraulic machinery devices, and are commonly used in agriculture, fire protection, mines, municipal, electric power, chemical industry and other departments. With increasing importance placed on the stability and vibration problems of centrifugal pumps, research on the flow of liquid inside the pumps is necessary. Dynamic and static interference of the centrifugal pump impeller and the baffle tongue is an important reason for inducing vibration of the liquid flow of the centrifugal pump. In the operation stage of the centrifugal pump, the liquid in the liquid storage chamber is mixed with the air in the pump body and the water suction pipe by the impeller rotating at high speed, so that a gas-liquid mixture is formed in the impeller, and gas-liquid separation occurs when the gas-liquid mixture passes through the partition tongue of the pump body, so that the gap between the partition tongue and the impeller needs to be adjusted according to different impeller outer diameters.

The device between the baffle tongue and the impeller in the prior art can only adjust the position of the baffle tongue by opening the volute casing when the pump stops running, so that the device cannot be adjusted when the pump works normally, the difficulty of operation during adjustment is further increased, and the working efficiency is reduced.

Disclosure of Invention

Therefore, the technical problem that this application was to solve lies in providing an angularly adjustable separates tongue subassembly, can solve unable regulation when the pump normally works, and then not only increases the degree of difficulty of operation when adjusting, and reduces work efficiency's problem.

In order to solve the above-mentioned problem, the application provides an angularly adjustable separates tongue subassembly, including spiral case, separate tongue and coupling assembling, separate the tongue with coupling assembling fixed connection, separate the tongue through coupling assembling can rotationally set up on the inner wall of spiral case to can fix in predetermineeing the position, coupling assembling's a portion stretches out to the outside of spiral case.

Optionally, the coupling assembling includes the dwang, the dwang with the axis parallel arrangement of spiral case, the dwang includes linkage segment and adjustment section, the linkage segment is located the spiral case, and with separate the tongue and be connected, the adjustment section stretches out the outside of spiral case is used for driving separate the tongue rotation.

Optionally, the connecting assembly further includes a connecting member, the connecting member includes a first end and a second end, the first end is located in the volute casing and connected to the partition tongue, and the second end is connected to the rotating rod.

Optionally, the spiral case includes the support shell, the dwang rotates to be connected on the support shell, the support shell is located be provided with the slide hole on the lateral wall of spiral case inboard, first end is passed the slide hole with the volute tongue is connected, the dwang is used for driving the connecting piece is in the circumference direction of dwang is in the slide hole is interior.

Optionally, an observation port is formed in a side wall, away from the inner side of the volute, of the supporting shell, and a transparent cover plate is arranged on the upper cover of the observation port.

Optionally, the inner wall of the support shell far away from the observation port is provided with scales along the moving direction of the connecting piece, and the scales are arranged opposite to the observation port.

Optionally, the side wall of the supporting shell far away from the opening is a first cambered surface, the side wall of the separating tongue contacting with the first cambered surface is a second cambered surface, and the first cambered surface is attached to the second cambered surface, so that the separating tongue can slide on the first cambered surface.

Optionally, a plane perpendicular to the central axis of the supporting shell is a, the projected arc length of the first cambered surface in the plane a is a first arc length, the projected arc length of the second cambered surface in the plane a is a second arc length, and the length of the second arc length is 2/3 of the length of the first arc length.

Optionally, the connecting assembly further includes a positioning member, where the positioning member is connected to the rotating rod and/or the partition tongue, and is configured to fix the rotating rod when the test partition tongue rotates to the preset position.

In another aspect of the present application, a centrifugal pump is provided having the above-described angularly adjustable diaphragm assembly mounted thereto.

Advantageous effects

According to the angle-adjustable partition tongue assembly provided by the embodiment of the invention, the volute is connected with the volute through the connecting assembly in normal operation, and the part of the connecting assembly extending out of the volute is operated to drive the partition tongue to rotate, so that the angular position of the partition tongue can be adjusted without opening the volute on the premise of not stopping the operation of the pump, and the problems that the adjustment cannot be performed during the normal operation of the pump, the operation difficulty is increased and the working efficiency is reduced are solved.

Drawings

FIG. 1 is a cross-sectional view of a front view of an embodiment of the present application;

FIG. 2 is a schematic view of a partial enlarged structure at A in an embodiment of the present application;

FIG. 3 is a schematic view of a B-B cross-sectional structure of an embodiment of the present application;

FIG. 4 is a schematic perspective view of a connecting assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic perspective view of a support shell according to an embodiment of the present application.

The reference numerals are expressed as:

1. a volute; 2. a partition tongue; 3. a connection assembly; 30. a rotating lever; 31. a connecting piece; 32. a positioning piece; 33. a sliding hole; 34. a transparent cover plate; 35. a scale; 4. and a support case.

Detailed Description

Referring to fig. 1 to 5 in combination, according to an embodiment of the present application, the present application provides a technical solution: referring to fig. 1, an angle-adjustable tongue isolation assembly includes a volute casing 1, a tongue isolation 2 and a connection assembly 3, wherein the tongue isolation 2 is fixedly connected with the connection assembly 3, the tongue isolation 2 is rotatably disposed on an inner wall of the volute casing 1 through the connection assembly 3 and can be fixed at a preset position, and a part of the connection assembly 3 extends out of the volute casing 1. The spiral case 1 is in normal work, is connected with spiral case 1 through coupling assembling 3 to the part that the operation coupling assembling 3 stretched out spiral case 1, and then drive and separate tongue 2 and rotate, under the prerequisite that does not stop pump work, need not open spiral case 1 simultaneously, realize adjusting the angular position that separates tongue 2 promptly, easy operation improves work efficiency.

Further, one end of the volute 1 is provided with an opening, wherein the position of the opening is close to the outer diameter of the impeller, and the partition tongue 2 is close to the outer diameter of the impeller conveniently. The connecting component 3 is connected to the opening, one end of the connecting component 3 is arranged in the inner cavity of the volute 1 and is rotationally connected with the volute 1, and the purpose is to connect the partition tongue 2, and the partition tongue 2 is driven to rotate by operating the connecting component 3.

Furthermore, the shape of the isolation tongue 2 is tongue-shaped, wherein the tongue-shaped tip of the isolation tongue 2 is close to the pump body, so that the size of a gap between the isolation tongue 2 and the pump body can be conveniently adjusted through the shape of the tongue-shaped tip of the isolation tongue 2, and further, the generated vibration and noise are reduced, and the working efficiency of the copper welding wire is improved. The tongue-shaped heel of the partition tongue 2 is fixedly connected with the connecting component 3, and the specific connecting mode is not limited in the application, and can be connected through welding, threaded connection and the like.

Further, the partition tongue 2 is located in the inner cavity of the volute 1 and located at the opening, the connecting component 3 is rotationally connected with the inner cavity of the volute 1, and a specific rotational connection mode is not further limited, so that the connecting component 3 can rotate. Namely, when the connecting component 3 rotates, the separating tongue 2 is driven to rotate along with the connecting component, so that the angle of the separating tongue 2 is adjusted.

Further, the rotation range of the partition tongue 2 is between the inner wall of the volute casing 1 and the outer diameter of the impeller, the partition tongue 2 cannot rotate to be in contact with the outer diameter of the impeller, and the partition tongue 2 cannot rotate to pass through the opening and rotate to the outer side of the volute casing 1.

Further, after the partition tongue 2 rotates, the partition tongue 3 can be fixed at a preset position under the action of the connecting component 3, and the connecting component 3 can stop rotating in a self-locking mode or directly rotate the partition tongue 2 to a preset position to be fixed with the volute 1. The mode of fixing the rotation of the partition tongue 2 to the preset position is not further limited, and the stop of the partition tongue 2 can be realized.

Further, since the opening is provided, that is, the connecting assembly 3 is mounted at the opening, it is convenient to observe the rotating position of the partition tongue 2 and operate the connecting assembly 3.

The connecting assembly 3 comprises a rotating rod 30, the rotating rod 30 is arranged in parallel with the central axis of the volute 1, the rotating rod 30 comprises a connecting section and an adjusting section, the connecting section is positioned in the volute 1 and is connected with the partition tongue 2, and the adjusting section extends out of the volute 1 and is used for driving the partition tongue 2 to rotate.

Further, the rotating rod 30 is a cylindrical rod, the central axis of the rotating rod 30 is parallel to the central axis of the volute 1, so that the rotating rod 30 can be conveniently operated at the side of the volute 1, and the gap between the partition tongue 2 and the outer diameter of the impeller can be conveniently adjusted.

Further, the connecting section of the rotating rod 30 is located in the inner cavity of the volute 1, meanwhile the volute 1 is connected in a rotating mode, a rotating sleeve is arranged at the connecting position of the rotating rod 30 and the volute 1, and friction force between the rotating rod 30 and the volute 1 is reduced. The connecting section and the partition tongue 2 are fixedly connected, wherein the connecting section and the partition tongue can be connected with each other or indirectly connected through parts.

Further, the adjusting section is used for conveniently adjusting the rotating rod, passes through the volute 2 and is positioned at the outer side of the volute 2, and the shape of the adjusting section is cylindrical or square. When the adjusting section is cylindrical, the adjusting section is sleeved or fixedly connected with the handle for convenient operation, so that the rotating operation is convenient. When the adjusting section is square, the adjusting section can be operated. The shape and operation mode of the specific adjusting section are not limited to the two modes, and the adjusting section can be conveniently operated.

The connecting assembly 3 further comprises a connecting member 31, the connecting member 31 comprising a first end and a second end, the first end being located in the volute 1 and being connected to the tongue 2, the second end being connected to the rotating lever 30.

Further, the connecting pieces 31 are straight columns or straight rods, which are not limited in detail, and serve to connect the partition tongue 2 and the rotating rod 30, wherein the number of the connecting pieces 31 is at least 2, and the material rigidity is not enough in the rotating process, so that breakage is prevented.

Further, the first end and the partition tongue 2 are connected together by welding or screwing, or the connecting piece 31 and the partition tongue 2 are integrally manufactured, so that the support strength is higher.

Further, the second end is welded or screwed to the rotating rod 30, wherein the threaded connection has the advantage of facilitating replacement of the partition tongue 2, and according to impellers of different types, replacement of the partition tongue 2 of different types is convenient.

The volute casing 1 comprises a supporting shell 4, a rotating rod 30 is rotatably connected to the supporting shell 4, a sliding hole 33 is formed in the side wall, located on the inner side of the volute casing 1, of the supporting shell 4, a first end of the rotating rod 30 penetrates through the sliding hole 33 to be connected with the volute tongue 2, and the rotating rod 30 is used for driving a connecting piece 31 to move in the sliding hole 33 in the circumferential direction of the rotating rod 30.

Further, the support shell 4 is installed at the opening, the support shell 4 is a semi-cylindrical shell, wherein the central axis of the semi-cylindrical shell is free of side walls and is a through hole. I.e. the cylindrical side wall of the support housing 4 is located on the inner side of the volute 1, i.e. the opening of the support housing 4 communicates with the atmosphere outside the volute 1, and the support housing 4 blocks the opening, i.e. the volute 1 and the support housing 4 are connected by welding.

Further, the connecting section of the rotating rod 30 is located in the inner cavity of the supporting shell 4, and the adjusting section movably penetrates through the supporting shell 4 and is located on the outer side of the volute 1. Wherein, the contact place between the rotating rod 30 and the supporting shell 4 is provided with a ring-shaped sealing ring, which plays a role in sealing.

Further, the number of the sliding holes 33 provided on the cylindrical side wall of the supporting shell 4 corresponds to the number of the connecting pieces 31, and the sliding holes 33 are used for facilitating the connecting pieces 31 to drive the partition tongue 2 to rotate along with the change of the number of the connecting pieces 31.

Further, the sliding hole 33 is formed on the cylindrical side wall of the supporting shell 4, that is, the shape of the sliding hole 33 is arc-shaped, and is consistent with the cylindrical radian of the supporting shell 4, that is, the direction of the sliding hole 33 is perpendicular to the central axis direction of the rotating rod 30, wherein the arc length of the sliding hole 33 is adjusted according to the actual rotation range of the partition tongue 2, the adjustment range of the partition tongue 2 is limited, and meanwhile friction between the partition tongue 2 and the impeller is prevented.

The side wall of the supporting shell 4 far away from the inner side of the volute 1 is provided with an observation port, and a transparent cover plate 34 is arranged on the upper cover of the observation port.

Further, the central axis of the semi-cylindrical shell of the supporting shell 4 is free of side walls, the through hole is the observation hole, the rotation rod 30 of the inner cavity of the supporting shell 4 is convenient to observe through the observation hole to drive the rotation piece 31 to move, and the use is convenient.

Further, since the support shell 4 is provided with the sliding hole 33, that is, the inner cavity of the volute 1 is communicated with the atmosphere outside the volute 1 through the sliding hole 33, the inner cavity of the volute 1 is not sealed, liquid leakage of the inner cavity is avoided, that is, the transparent cover plate 34 is fixedly arranged at the observation port, and the movement condition of the inner cavity of the support shell 4 is conveniently observed through the transparent cover plate 34. Wherein the transparent cover plate 34 is connected with the support shell 4 by welding.

The inner wall of the support shell 4 far away from the observation port is provided with scales 35 along the moving direction of the connecting piece 31, and the scales 35 are arranged opposite to the observation port.

Further, the scale 35 is arranged on the inner side wall of the supporting shell 4, namely, the scale 35 is seen through the transparent cover plate 34, so that the rotating precision of the partition tongue 2 is improved, the pump is convenient to stop, and meanwhile, the rotating angle of the partition tongue 2 can be operated and adjusted without disassembling the volute 1.

The side wall of the support shell 4 far away from the opening is a first cambered surface, the side wall of the partition tongue 2, which is contacted with the first cambered surface, is a second cambered surface, and the first cambered surface is attached to the second cambered surface, so that the partition tongue 2 can slide on the first cambered surface.

Further, the partition tongue 2 and the support shell 4 are convenient to move mutually, namely, the shape of the side wall of the partition tongue 2, which is attached to the support shell 4, is consistent with the shape of the side wall of the semi-cylindrical shell of the support shell 4, namely, the side wall of the partition tongue 2 is a second cambered surface, wherein the contact surfaces of the first cambered surface and the second cambered surface are smooth, and smooth movement of the partition tongue 2 on the surface of the support shell 4 is ensured.

The plane perpendicular to the central axis of the supporting shell 4 is A, the projected arc length of the first cambered surface in the plane A is the first arc length, the projected arc length of the second cambered surface in the plane A is the second arc length, and the length of the second arc length is 2/3 of the length of the first arc length.

Further, it is ensured that the wrap angle of the partition tongue 2 during rotation cannot be too small, that is, when the partition tongue 2 rotates to one end of the support shell 4, the liquid in the inner cavity of the volute 1 flows out through the sliding hole 33, that is, the length of the second arc length is 2/3 of the length of the first arc length, good sealing performance is achieved, smooth rotation of the partition tongue 2 is ensured, and the adjustment angle of the partition tongue 2 is ensured.

The connecting assembly 3 further comprises a positioning member 32, wherein the positioning member 32 is connected with the rotating rod 30 and/or the partition tongue 2, and is used for fixing the rotating rod 30 when the test partition tongue 2 rotates to a preset position.

As an embodiment, the connection assembly 3 further includes a positioning member 32, and the positioning member 32 is connected to the rotating rod 30 so as to stop the rotation of the tongue 2 to a predetermined position.

Specifically, the positioning member 32 is a lock nut, that is, the adjusting section of the rotating rod 30 is set to be an external thread, that is, the lock nut and the external thread are connected with each other, when the partition tongue 2 rotates according to the scale 35, the rotating rod 30 is fixed through the matching of the lock thread and the external thread, and then the partition tongue 2 is fixed at a preset position.

As a further embodiment, the connection assembly 3 further comprises a positioning member 32, and the positioning member 32 is connected to the tongue 2 so as to stop the rotation of the tongue 2 to a preset position.

Specifically, the positioning member 32 is a clasping member, and when the rotation of the partition tongue 2 is stopped at a preset position, that is, the clasping member clasps the rotation position of the partition tongue 2, so as to ensure that the partition tongue 2 is fixed at the preset position.

As a further embodiment, the connection assembly 3 further includes a positioning member 32, and the positioning member 32 is connected to the rotation lever 30 and the diaphragm 2 so as to stop the rotation of the diaphragm 2 to a predetermined position.

Specifically, the positioning piece 32 is a positioning rod, that is, the positioning holes are formed in the partition tongue 2 and the rotating rod 30, and are mutually communicated, that is, when the partition tongue 2 rotates to a preset position, the partition tongue 2 and the rotating rod 30 are simultaneously fixed through inserting the positioning rod into the positioning holes.

According to an embodiment of the present application, optionally, a centrifugal pump is provided with the above-mentioned angularly adjustable diaphragm assembly.

Working principle: in normal operation of the volute casing 1, the rotating rod 30 is operated to drive the partition tongue 2 to rotate along the side wall of the support shell 4 in the sliding hole 33, and on the premise of not stopping the pump operation, the volute casing 1 is not required to be opened, namely, the angle position of the partition tongue 2 is adjusted, the operation is simple, and the working efficiency is improved.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiment of the present invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The foregoing is merely a preferred embodiment of the present application and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the present application.

Claims

1. The angle-adjustable partition tongue assembly is characterized by comprising a volute casing (1), a partition tongue (2) and a connecting assembly (3), wherein the partition tongue (2) is fixedly connected with the connecting assembly (3), the partition tongue (2) is rotatably arranged on the inner wall of the volute casing (1) through the connecting assembly (3) and can be fixed at a preset position, and a part of the connecting assembly (3) extends out of the volute casing (1);

the connecting assembly (3) comprises a rotating rod (30), the rotating rod (30) is arranged in parallel with the central axis of the volute (1), the rotating rod (30) comprises a connecting section and an adjusting section, the connecting section is positioned in the volute (1) and is connected with the partition tongue (2), and the adjusting section extends out of the outer side of the volute (1) and is used for driving the partition tongue (2) to rotate;

the connecting assembly (3) further comprises a connecting piece (31), the connecting piece (31) comprises a first end and a second end, the first end is positioned in the volute casing (1) and is connected with the partition tongue (2), and the second end is connected with the rotating rod (30);

the spiral case (1) includes supporting shell (4), dwang (30) rotate and connect on supporting shell (4), supporting shell (4) are located be provided with sliding hole (33) on spiral case (1) inboard lateral wall, first end is passed sliding hole (33) with separate tongue (2) and be connected, dwang (30) are used for driving connecting piece (31) are in the circumferencial direction of dwang (30) is in sliding hole (33).

2. The angularly adjustable tongue-separating assembly according to claim 1, characterized in that the side wall of the supporting shell (4) far away from the inner side of the volute (1) is provided with a viewing port, and the upper cover of the viewing port is provided with a transparent cover plate (34).

3. The angularly adjustable tongue-separating assembly according to claim 2, characterized in that the inner wall of the supporting shell (4) remote from the viewing port is provided with a scale (35) along the moving direction of the connecting piece (31), the scale (35) being arranged opposite to the viewing port.

4. The angle-adjustable tongue-separating assembly according to claim 3, wherein the side wall of the supporting shell (4) far away from the observation port is a first cambered surface, the side wall of the tongue-separating assembly (2) contacted with the first cambered surface is a second cambered surface, and the first cambered surface is attached to the second cambered surface, so that the tongue-separating assembly (2) can slide on the first cambered surface.

5. The adjustable angle tongue separation assembly of claim 4, wherein the plane perpendicular to the central axis of the support shell (4) is a, the arc length of the projection of the first arc surface in the plane a is a first arc length, the arc length of the projection of the second arc surface in the plane a is a second arc length, and the length of the second arc length is 2/3 of the length of the first arc length.

6. The angularly adjustable spacer tongue assembly according to claim 1, wherein the connecting assembly (3) further comprises a positioning member (32), the positioning member (32) being connected to the rotation lever (30) and/or the spacer tongue (2) for fixing the rotation lever (30) when the trial spacer tongue (2) is rotated to the preset position.

7. A centrifugal pump comprising an angularly adjustable diaphragm assembly according to any one of claims 1 to 6.