阅读说明：本技术 一种离心泵 (Centrifugal pump ) 是由 不公告发明人 于 2020-05-26 设计创作，主要内容包括：本发明公开了一种离心泵,包括泵体,所述泵体内设有泵腔,所述泵体在泵腔的开口处安装有泵盖,所述泵盖内转动连接有动力轴,所述泵腔内在动力轴上固定安装有叶轮,所述泵体的侧面设有进水管道和出水管道；所述进水管道内设有第一分隔板,所述第一分隔板将进水管道分割成左进通道和右进通道；所述左进通道内设有左进滤网,所述右进通道内设有右进滤网；所述进水管道内滑动连接有第一换向板；两个第一换向板上设有第一连通孔；所述进水管道的侧面设有与左进通道连通的左进安装口,以及与右进通道连通的右进安装口,所述左进安装口处固定安装有左进盖板,所述右进安装口处固定安装有右进盖板；该离心泵不需要停机就可以在线对过滤网进行更换。(The invention discloses a centrifugal pump, which comprises a pump body, wherein a pump cavity is arranged in the pump body, a pump cover is arranged at an opening of the pump cavity of the pump body, a power shaft is rotationally connected in the pump cover, an impeller is fixedly arranged on the power shaft in the pump cavity, and a water inlet pipeline and a water outlet pipeline are arranged on the side surface of the pump body; a first partition plate is arranged in the water inlet pipeline and divides the water inlet pipeline into a left inlet channel and a right inlet channel; a left inlet filter screen is arranged in the left inlet channel, and a right inlet filter screen is arranged in the right inlet channel; a first reversing plate is connected in the water inlet pipeline in a sliding manner; the two first reversing plates are provided with first through holes; a left inlet mounting port communicated with the left inlet channel and a right inlet mounting port communicated with the right inlet channel are formed in the side surface of the water inlet pipeline, a left inlet cover plate is fixedly mounted at the left inlet mounting port, and a right inlet cover plate is fixedly mounted at the right inlet mounting port; the centrifugal pump can replace the filter screen on line without stopping the machine.)

1. A centrifugal pump comprises a pump body, wherein a pump cavity is arranged in the pump body, a pump cover is arranged at an opening of the pump cavity of the pump body, a power shaft with one end extending into the pump cavity is rotatably connected in the pump cover, an impeller is fixedly arranged on the power shaft in the pump cavity, a water inlet pipeline communicated with the pump cavity is arranged on the side surface of the pump body along the axial direction of the power shaft, and a water outlet pipeline communicated with the pump cavity is arranged along the radial direction of the impeller; the water inlet pipeline is internally provided with a first partition plate along the water inlet direction, and the first partition plate divides the water inlet pipeline into a left inlet channel and a right inlet channel; a left inlet filter screen is arranged in the left inlet channel, and a right inlet filter screen is arranged in the right inlet channel; the two ends of the first partition plate in the water inlet pipeline are connected with first reversing plates in a sliding mode, and the first reversing plates are perpendicular to the first partition plate; the two first reversing plates are provided with first through holes in opposite positions; when the two first reversing plates are positioned at the first positions, the two first connecting holes are communicated with the left feeding channel, and the two first reversing plates separate two ends of the right feeding channel; when the two first reversing plates are positioned at the second position, the two first connecting holes are communicated with the right inlet channel, and the two first reversing plates separate two ends of the left inlet channel; the side of inlet channel is equipped with advances the installing port with a left side of advancing the passageway intercommunication to and advance the installing port with the right side of advancing the passageway intercommunication, it has a left side to advance the fixed mounting of installing port department and advances the apron to advance the installing port department fixed mounting on the left side, the apron is advanced on the right side to advance installing port department fixed mounting on the right side.

2. The centrifugal pump according to claim 1, wherein a left inlet chute is arranged on the left side wall of the water inlet pipeline and the left side surface of the first partition plate along a direction perpendicular to the left inlet cover plate, and two sides of the left inlet filter screen are respectively inserted into the two left inlet chutes; the right side wall of the water inlet pipeline and the right side face of the first partition plate are provided with right inlet sliding grooves along the direction perpendicular to the right inlet cover plate, and two sides of the right inlet filter screen are respectively inserted into the two right inlet sliding grooves.

3. The centrifugal pump according to claim 1, wherein a left connecting plate is arranged between the left ends of the two first reversing plates, and a first handle is arranged on the left connecting plate; a right connecting plate is arranged between the right ends of the two first reversing plates.

4. The centrifugal pump of claim 1, wherein a second partition plate is arranged in the water outlet pipeline along the water outlet direction, and the second partition plate divides the water outlet pipeline into a left outlet channel and a right outlet channel; a left outlet filter screen is arranged in the left outlet channel, and a right outlet filter screen is arranged in the right outlet channel; the two ends of the second partition plate in the water outlet pipeline are both connected with second reversing plates in a sliding manner, and the second reversing plates are both vertical to the second partition plate; the two second reversing plates are provided with second communicating holes in opposite positions; when the two second reversing plates are positioned at the first positions, the two second communication holes are communicated with the left outlet channel, and the two second reversing plates separate two ends of the right outlet channel; when the two second reversing plates are located at the second positions, the two second communication holes are communicated with the right outlet channel, and the two second reversing plates separate two ends of the left outlet channel; the side of outlet conduit is equipped with the left side export installing port that communicates with left play passageway to and the right side export installing port that communicates with right play passageway, left side export installing port department fixed mounting has left side to go out the apron, right side export installing port department fixed mounting has right side to go out the apron.

5. The centrifugal pump according to claim 4, wherein a left outlet chute is arranged on the left side wall of the water outlet pipeline and the left side surface of the second separation plate along the direction vertical to the left outlet cover plate, and two sides of the left outlet filter screen are respectively inserted into the two left outlet chutes; and a right outlet chute is arranged on the right side wall of the water outlet pipeline and the right side surface of the second partition plate along the direction perpendicular to the right outlet cover plate, and two sides of the right outlet filter screen are respectively inserted into the two right outlet chutes.

6. The centrifugal pump according to claim 4, wherein a second left connecting plate is arranged between the left ends of the two second reversing plates, and a second handle is arranged on the second left connecting plate; and a right two connecting plates are arranged between the right ends of the two second reversing plates.

Technical Field

The invention belongs to the technical field of centrifugal pumps, and particularly relates to a centrifugal pump with a filter screen capable of being replaced on line.

Background

The centrifugal pump is a machine for conveying liquid or pressurizing liquid, transfers the mechanical energy of a prime motor or other external energy to the liquid to increase the energy of the liquid, is mainly used for conveying the liquid, such as water, oil, acid-base liquid, emulsion, suspoemulsion, liquid metal and the like, and can also convey the liquid, gas mixture and the liquid containing suspended solids; the technical parameters for measuring the performance of the centrifugal pump include flow, suction lift, shaft power, water power, efficiency and the like.

The common centrifugal pump generally has complicated working conditions, a working place possibly contains more gravels and impurities, if the water pump works continuously for a long time and the accumulation amount of the impurities reaches a certain degree, the parts such as blades of the water pump and the like can not run smoothly, the functions are reduced, the pump body structure of the centrifugal pump can be influenced, and the abrasion and the loss of the machine are increased; in addition, the existing centrifugal pumps are provided with filtering devices at the inlet and the outlet, and need to be cleaned regularly. During cleaning, relevant parts need to be disassembled, and the parts are reinstalled after cleaning. Not only is troublesome, but also delays the production progress and causes certain inconvenience for production.

Disclosure of Invention

The object of the invention is to provide a centrifugal pump which allows on-line filter screen replacement without the need for a shutdown.

In order to achieve the purpose, the invention provides the following technical scheme:

a centrifugal pump comprises a pump body, wherein a pump cavity is arranged in the pump body, a pump cover is arranged at an opening of the pump cavity of the pump body, a power shaft with one end extending into the pump cavity is rotatably connected in the pump cover, an impeller is fixedly arranged on the power shaft in the pump cavity, a water inlet pipeline communicated with the pump cavity is arranged on the side surface of the pump body along the axial direction of the power shaft, and a water outlet pipeline communicated with the pump cavity is arranged along the radial direction of the impeller; a first partition plate is arranged in the water inlet pipeline along the water inlet direction, and the water inlet pipeline is divided into a left inlet channel and a right inlet channel by the first partition plate; a left inlet filter screen is arranged in the left inlet channel, and a right inlet filter screen is arranged in the right inlet channel; the two ends of the first partition plate in the water inlet pipeline are connected with first reversing plates in a sliding mode, and the first reversing plates are perpendicular to the first partition plate; the two first reversing plates are provided with first through holes in opposite positions; when the two first reversing plates are positioned at the first positions, the two first connecting holes are communicated with the left feeding channel, and the two first reversing plates separate two ends of the right feeding channel; when the two first reversing plates are positioned at the second position, the two first connecting holes are communicated with the right inlet channel, and the two first reversing plates separate two ends of the left inlet channel; the side of inlet channel is equipped with advances the installing port with a left side of advancing the passageway intercommunication to and advance the installing port with the right side of advancing the passageway intercommunication, it has a left side to advance the fixed mounting of installing port department and advances the apron to advance the installing port department fixed mounting on the left side, the apron is advanced on the right side to advance installing port department fixed mounting on the right side.

Through the technical scheme, the first reversing plate can control the water inlet pipeline to select the left inlet filter screen or the right inlet filter screen to be communicated with the pump cavity, the left inlet cover plate is arranged above the left inlet filter screen, and the right inlet cover plate is arranged above the right inlet filter screen; when the left inlet filter screen needs to be replaced, the two first reversing plates are located at the second position, the two first reversing plates partition the two ends of the left inlet channel, and the left inlet filter screen can be taken out, cleaned and installed after the left inlet cover plate is removed; when the right-hand filter screen needs to be replaced, the two first reversing plates are located at the first positions, the two first reversing plates separate the two ends of the right-hand channel, the right-hand filter screen can be taken out, cleaned and loaded into the right-hand filter screen by detaching the right-hand cover plate, and the centrifugal pump does not need to be stopped.

Furthermore, a left inlet sliding groove is formed in the left side wall of the water inlet pipeline and the left side surface of the first partition plate along the direction perpendicular to the left inlet cover plate, and two sides of the left inlet filter screen are respectively inserted into the two left inlet sliding grooves; the right side wall of the water inlet pipeline and the right side face of the first partition plate are provided with right inlet sliding grooves along the direction perpendicular to the right inlet cover plate, and two sides of the right inlet filter screen are respectively inserted into the two right inlet sliding grooves.

Furthermore, a left connecting plate is arranged between the left ends of the two first reversing plates, and a first handle is arranged on the left connecting plate; a right connecting plate is arranged between the right ends of the two first reversing plates; the left connecting plate and the right connecting plate are arranged to limit the left and right movement of the two first reversing plates; when the two first reversing plates are located at the first positions, the left connecting plate is in contact with the left side of the water inlet pipeline, and when the two first reversing plates are located at the second positions, the left connecting plate is in contact with the right side of the water inlet pipeline.

Furthermore, a second partition plate is arranged in the water outlet pipeline along the water outlet direction, and the water outlet pipeline is divided into a left outlet channel and a right outlet channel by the second partition plate; a left outlet filter screen is arranged in the left outlet channel, and a right outlet filter screen is arranged in the right outlet channel; the two ends of the second partition plate in the water outlet pipeline are both connected with second reversing plates in a sliding manner, and the second reversing plates are both vertical to the second partition plate; the two second reversing plates are provided with second communicating holes in opposite positions; when the two second reversing plates are positioned at the first positions, the two second communication holes are communicated with the left outlet channel, and the two second reversing plates separate two ends of the right outlet channel; when the two second reversing plates are located at the second positions, the two second communication holes are communicated with the right outlet channel, and the two second reversing plates separate two ends of the left outlet channel; the side of outlet conduit is equipped with the left side export installing port that communicates with left play passageway to and the right side export installing port that communicates with right play passageway, left side export installing port department fixed mounting has left side to go out the apron, right side export installing port department fixed mounting has right side to go out the apron.

Through the technical scheme, the second reversing plate can control the water outlet pipeline to select the left filter screen or the right filter screen to be communicated with the pump cavity, a left cover plate is arranged above the left filter screen, and a right cover plate is arranged above the right filter screen; when the left filter screen needs to be replaced, the two second reversing plates are located at the second position, the two second reversing plates partition the two ends of the left outlet channel, and the left filter screen can be taken out, cleaned and loaded after the left outlet cover plate is removed; when the right-outlet filter screen needs to be replaced, the two second reversing plates are located at the second position, the two ends of the right-outlet channel are separated by the two second reversing plates, the right-outlet cover plate is detached, the right-outlet filter screen can be taken out, cleaned and loaded, and the centrifugal pump does not need to be stopped.

Furthermore, a left outlet chute is arranged on the left side wall of the water outlet pipeline and the left side surface of the second partition plate along the direction vertical to the left outlet cover plate, and two sides of the left outlet filter screen are respectively inserted into the two left outlet chutes; and a right outlet chute is arranged on the right side wall of the water outlet pipeline and the right side surface of the second partition plate along the direction perpendicular to the right outlet cover plate, and two sides of the right outlet filter screen are respectively inserted into the two right outlet chutes.

Furthermore, a left second connecting plate is arranged between the left ends of the two second reversing plates, and a second handle is arranged on the left second connecting plate; a right two-connecting plate is arranged between the right ends of the two second reversing plates; the left connecting plate and the right connecting plate are arranged to limit the left and right movement of the two first reversing plates; when the two first reversing plates are located at the first positions, the left connecting plate is in contact with the left side of the water inlet pipeline, and when the two first reversing plates are located at the second positions, the left connecting plate is in contact with the right side of the water inlet pipeline.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

(1) according to the invention, the first reversing plate can control the water inlet pipeline to select a left inlet filter screen or a right inlet filter screen to be communicated with the pump cavity, a left inlet cover plate is arranged above the left inlet filter screen, and a right inlet cover plate is arranged above the right inlet filter screen; when the left inlet filter screen needs to be replaced, the two first reversing plates are located at the second position, the two first reversing plates partition the two ends of the left inlet channel, and the left inlet filter screen can be taken out, cleaned and installed after the left inlet cover plate is removed; when the right-entering filter screen needs to be replaced, the two first reversing plates are located at the first position, the two first reversing plates separate two ends of the right-entering channel, the right-entering filter screen can be taken out, cleaned and installed after the right-entering cover plate is removed, and the centrifugal pump does not need to be stopped;

(2) according to the invention, the second reversing plate can control the water outlet pipeline to select a left filter screen or a right filter screen to be communicated with the pump cavity, a left cover plate is arranged above the left filter screen, and a right cover plate is arranged above the right filter screen; when the left filter screen needs to be replaced, the two second reversing plates are located at the second position, the two second reversing plates partition the two ends of the left outlet channel, and the left filter screen can be taken out, cleaned and loaded after the left outlet cover plate is removed; when the right-outlet filter screen needs to be replaced, the two second reversing plates are located at the second position, the two ends of the right-outlet channel are separated by the two second reversing plates, the right-outlet cover plate is detached, the right-outlet filter screen can be taken out, cleaned and loaded, and the centrifugal pump does not need to be stopped.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention;

FIGS. 2-4 are plan view structural diagrams of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is a cross-sectional view of the first reversing plate of FIG. 6 after being indexed;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 3;

FIG. 9 is a cross-sectional view taken along line D-D of FIG. 3;

FIG. 10 is a cross-sectional view of the second reversing plate of FIG. 9 after being indexed;

fig. 11 is a cross-sectional view taken along line E-E in fig. 2.

Detailed Description

Referring to fig. 1-11, a centrifugal pump includes a pump body 11, a pump cavity 11a is arranged in the pump body 11, a pump cover 12 is installed at an opening of the pump cavity 11a in the pump body 11, a power shaft 13 with one end extending into the pump cavity 11a is rotatably connected to the pump cover 12, an impeller 14 is fixedly installed on the power shaft 13 in the pump cavity 11a, a water inlet pipe 15 communicated with the pump cavity 11a is arranged on a side surface of the pump body 11 along an axial direction of the power shaft 13, a water outlet pipe 1 communicated with the pump cavity 11a is arranged along a radial direction of the impeller 14, and a cross section of the water outlet pipe 1 is square; a first partition plate 15a is arranged in the water inlet pipeline 15 along the water inlet direction, and the water inlet pipeline 15 is divided into a left inlet channel 15a1 and a right inlet channel 15a2 by the first partition plate 15 a; a left inlet filter screen 5a is arranged in the left inlet channel 15a1, and a right inlet filter screen 5b is arranged in the right inlet channel 15a 2; two ends of a first partition plate 15a in the water inlet pipeline 15 are connected with first reversing plates 7a in a sliding mode, and the first reversing plates 7a are perpendicular to the first partition plate 15 a; the two first reversing plates 7a are provided with first through holes 7b opposite in position; when the two first reversing plates 7a are at the first position, the two first communication holes 7b are both communicated with the left inlet channel 15a1, and the two first reversing plates 7a cut off the two ends of the right inlet channel 15a 2; when the two first reversing plates 7a are at the second position, the two first communication holes 7b are both communicated with the right inlet channel 15a2, and the two first reversing plates 7a cut off the two ends of the left inlet channel 15a 1; the side of inlet channel 15 is equipped with advances the installing port with a left side that advances passageway 15a1 intercommunication to and advance the installing port with the right side that advances passageway 15a2 intercommunication, it has a left side to advance apron 6a to advance installing port department fixed mounting to advance a left side, it has a right side to advance apron 6b to advance installing port department fixed mounting to advance the right side.

A left inlet chute 15b is arranged on the left side wall of the water inlet pipeline 15 and the left side surface of the first partition plate 15a along the direction vertical to the left inlet cover plate 6a, and two sides of the left inlet filter screen 5a are respectively inserted into the two left inlet chutes 15 b; the right side wall of the water inlet pipeline 15 and the right side face of the first partition plate 15a are provided with a right inlet chute 15c along the direction perpendicular to the right inlet cover plate 6b, and two sides of the right inlet filter screen 5b are respectively inserted into the two right inlet chutes 15 c.

A left connecting plate 9a is arranged between the left ends of the two first reversing plates 7a, and a first handle 9 is arranged on the left connecting plate 9 a; a right connecting plate 9b is arranged between the right ends of the two first reversing plates 7 a; the left connecting plate 9a and the right connecting plate 9b are arranged to limit the left and right movement of the two first reversing plates 7 a; when the two first direction changing plates 7a are in the first position, the left connecting plate 9a is in contact with the left side of the water inlet pipe 15, and when the two first direction changing plates 7a are in the second position, the left connecting plate is in contact with the right side of the water inlet pipe 15.

In the centrifugal pump, a first reversing plate 7a can control a water inlet pipeline 15 to select a left inlet filter screen 5a or a right inlet filter screen 5b to be communicated with a pump cavity 11a, a left inlet cover plate 6a is arranged above the left inlet filter screen 5a, and a right inlet cover plate 6b is arranged above the right inlet filter screen 5 b; when the left filter screen 5a needs to be replaced, the two first reversing plates 7a are positioned at the second position, at the moment, the two first reversing plates 7a separate the two ends of the left inlet channel 15a1, and the left filter screen 5a can be taken out, cleaned and loaded after the left inlet cover plate 6a is removed; when the right-entering filter screen 5b needs to be replaced, the two first reversing plates 7a are located at the first position, at the moment, the two first reversing plates 7a separate the two ends of the right-entering channel 15a2, the right-entering filter screen 5b can be taken out, cleaned and installed by removing the right-entering cover plate 6b, and the centrifugal pump does not need to be stopped.

In addition, a second partition plate 1a is arranged in the water outlet pipeline 1 along the water outlet direction, and the water outlet pipeline 1 is divided into a left outlet channel 1a1 and a right outlet channel 1a2 by the second partition plate 1 a; a left filter screen 2a is arranged in the left outlet channel 1a1, and a right filter screen 2b is arranged in the right outlet channel 1a 2; the two ends of the second partition plate 1a in the water outlet pipeline 1 are both connected with second reversing plates 4a in a sliding manner, and the second reversing plates 4a are both vertical to the second partition plate 1 a; two second reversing plates 4a are provided with second communicating holes 4b opposite in position; when the two second direction changing plates 4a are at the first position, the two second communication holes 4b are both communicated with the left outlet channel 1a1, and the two second direction changing plates 4a block two ends of the right outlet channel 1a 2; when the two second direction changing plates 4a are at the second position, the two second communication holes 4b are both communicated with the right outlet channel 1a2, and the two second direction changing plates 4a cut off the two ends of the left outlet channel 1a 1; the side of outlet conduit 1 is equipped with the left side of going out the installing port that communicates with left play passageway 1a1 to and the right side of going out passageway 1a2 intercommunication goes out the installing port, a left side goes out installing port department fixed mounting has left side and goes out apron 3a, right side goes out installing port department fixed mounting has right side and goes out apron 3 b.

A left outlet chute 1b is arranged on the left side wall of the water outlet pipeline 1 and the left side surface of the second partition plate 1a along the direction vertical to the left outlet cover plate 3a, and two sides of the left outlet filter screen 2a are respectively inserted into the two left outlet chutes 1 b; the right side wall of outlet conduit 1 and the right flank of second division board 1a go up to be equipped with right spout 1c along the direction of the apron 3b is gone out on the perpendicular to right side, two right spouts 1c are inserted respectively to the both sides that go out filter screen 2b on the right side.

A second left connecting plate 8a is arranged between the left ends of the two second reversing plates 4a, and a second handle 8 is arranged on the second left connecting plate 8 a; a right second connecting plate 8b is arranged between the right ends of the two second reversing plates 4 a; the left second connecting plate 8a and the right second connecting plate 8b are arranged to limit the left and right movement of the two second reversing plates 4 a; when the two second direction changing plates 4a are in the first position, the left second connecting plate 8a is in contact with the left side of the water outlet pipe 1, and when the two second direction changing plates 4a are in the second position, the left second connecting plate 8a is in contact with the right side of the water outlet pipe 15.

The second reversing plate 4a in the centrifugal pump can control the water outlet pipeline 1 to select a left filter screen 2a or a right filter screen 2b to be communicated with the pump cavity 11a, a left cover plate 3a is arranged above the left filter screen 2a, and a right cover plate 3b is arranged above the right filter screen 2 b; when the left filter screen 2a needs to be replaced, the two second reversing plates 4a are positioned at the second position, at the moment, the two second reversing plates 4a separate the two ends of the left outlet channel 1a1, and the left filter screen 2a can be taken out, cleaned and loaded after the left outlet cover plate 3a is removed; when the right filter screen 2b needs to be replaced, the two second reversing plates 4a are located at the second position, at the moment, the two second reversing plates 4a separate the two ends of the right outlet channel 1a2, the right outlet cover plate 3b is removed, the right filter screen 2b can be taken out, cleaned and loaded, and the centrifugal pump does not need to be stopped.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.