CN114810608A

CN114810608A - High-temperature-resistant centrifugal pump

Info

Publication number: CN114810608A
Application number: CN202210370439.8A
Authority: CN
Inventors: 梅益涛; 程志强; 王维龙; 梅剑峰; 何建军; 钟国晟; 凤琦; 张逍
Original assignee: Anhui Wolong Pump & Valve Co ltd
Current assignee: Anhui Wolong Pump & Valve Co ltd
Priority date: 2022-04-10
Filing date: 2022-04-10
Publication date: 2022-07-29
Anticipated expiration: 2042-04-10
Also published as: CN114810608B

Abstract

The invention relates to the technical field of centrifugal pumps, in particular to a high-temperature-resistant centrifugal pump which comprises a pump core cabin main body, a centrifugal wheel main body arranged in the pump core cabin main body and a servo motor arranged on one side of the centrifugal wheel main body, wherein a drainage connecting pipe is fixed at the top of the pump core cabin main body, a connecting cabin is arranged on the outer wall of the pump core cabin main body through a bolt, a hole-opening heat dissipation mechanism is arranged on the side wall of the motor cabin, a butt joint pipe main body is arranged on one side of the pump core cabin main body, far away from the connecting cabin, through a bolt, a functional cabin is arranged on one side of the butt joint pipe main body, far away from the pump core cabin main body, a communicating pipe is arranged on one side of the functional cabin, far away from the butt joint pipe main body, and a water inlet connecting pipe is fixed at one end of the communicating pipe, far away from the functional cabin, through the bolt, long-strip-shaped heat dissipation sheet plates can be arranged between the motor cabins which are distributed in a clearance mode, so that a suction fan main body can enter the interior of the motor cabin by the heat dissipation sheet plates which are distributed at intervals in a static state High-efficiency heat removal.

Description

High-temperature-resistant centrifugal pump

Technical Field

The invention relates to the technical field of centrifugal pumps, in particular to a high-temperature-resistant centrifugal pump.

Background

The centrifugal pump is a pump for conveying liquid by the centrifugal force generated when an impeller rotates, the centrifugal pump works by utilizing the rotation of the impeller to enable water to generate centrifugal motion, before the water pump is started, a pump shell and a water suction pipe are filled with water, then a motor is started, a pump shaft drives the impeller and the water to generate high-speed rotation motion, the water generates centrifugal motion and is thrown to the outer edge of the impeller and flows into a water pressing pipeline of the water pump through a flow channel of a volute-shaped pump shell, and the centrifugal pump has various forms such as a vertical type, a horizontal type, a single stage, a multi-stage type, a single suction type, a double suction type, a self suction type and the like. The vertical centrifugal pump is called as a submerged pump for short, and the molten salt submerged pump is the most common vertical centrifugal pump, and the vertical centrifugal pump rotates at high speed by virtue of an impeller to force liquid in the center of the impeller to be thrown away at high speed, so that low pressure is formed in the center of the impeller, and the liquid in a low-level tank is continuously sucked up, so that an outer pipe is connected to the top of the vertical centrifugal pump to discharge water flow.

The application scope of centrifugal pump is wider, it both can use in the liquid that is more thick, can also make in the rivers of high temperature, and have stronger high temperature resistance ability for whole centrifugal pump, generally all adopt high temperature resistant material to realize preventing high temperature with the position of whole centrifugal pump and water contact, utilize motor drive in the centrifugal pump, the high use of motor makes whole centrifugal pump give out heat great in long-time use, and the louvre is seted up at the casing of motor to general common centrifugal pump radiating mode, make can inside steam can discharge along the louvre, because its air flow effect is relatively poor, lead to its holistic heat-sinking capability limited, when the motor operation in the face of high power, can't be timely with heat discharge, thereby lead to the inside high temperature condition that is in for a long time of whole centrifugal pump, influence the life-span of the pump body.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a high-temperature-resistant centrifugal pump, which solves the problems that the heat dissipation hole is arranged on the shell of the motor in the common heat dissipation mode of the centrifugal pump, so that internal hot air can be discharged along the heat dissipation hole, the whole heat dissipation capacity is limited due to poor air flow effect, and the heat cannot be discharged in time when the motor with high power runs, so that the inside of the whole centrifugal pump is in a high-temperature state for a long time, and the service life of a pump body is influenced.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a high-temperature-resistant centrifugal pump comprises a pump core bin main body, a centrifugal wheel main body and a servo motor, wherein the centrifugal wheel main body is arranged in the pump core bin main body, the servo motor is arranged on one side of the centrifugal wheel main body, a drainage connecting pipe is fixed at the top of the pump core bin main body, a connecting bin is arranged on the outer wall of the pump core bin main body through a bolt, a motor bin is arranged on one side, away from the pump core bin main body, of the connecting bin through a bolt, a suction fan main body is arranged on one side, away from the connecting bin, of the motor bin through a bolt, a filtering plate is attached to the outer wall of the connecting bin, a limiting plate is fixed on the side wall of the filtering plate, a hole-opening heat dissipation mechanism is arranged on the side wall of the motor bin, a butt pipe main body is arranged on one side, away from the connecting bin, of the pump core bin main body through a bolt, a function bin is arranged on one side, away from the butt pipe main body, and a water inlet connecting pipe is fixed at one end of the communicating pipe, which is far away from the functional bin.

Furthermore, the filtering plate sheet adopts a hollowed-out arc-shaped plate, and the limiting plate and the outer wall of the connecting bin are detachable through bolts.

Furthermore, trompil heat dissipation mechanism is including ann picture peg, fin board and ann jack, the fin board laminating is in the lateral wall in motor storehouse, ann picture peg is fixed in the lateral wall in motor storehouse just is located the below of fin board, ann jack sets up ann the upper end of jack, the screw hole that corresponds with ann jack is seted up to the inside of fin board.

Furthermore, the motor cabins and the radiating fin plates are distributed in an annular alternative mode, and a U-shaped structure is formed between every two adjacent groups of the motor cabins and the radiating fin plates.

Furthermore, the diapire in function storehouse has left base through the bolt fastening, the diapire in connection storehouse has right base through the bolt fastening, left side base and right base opposite distribution in the both sides of butt joint pipe main part.

Furthermore, an inner conduit body is arranged inside the functional bin, one port of the inner conduit body is communicated with one end, far away from the water inlet connecting pipe, of the communicating pipe, and the other end of the inner conduit body is communicated and connected with a filter pipe.

Furthermore, the communicating pipes are distributed in two groups in a V shape, and the rear ends of the two groups of communicating pipes are correspondingly connected with the inner conduit body.

Furthermore, the lateral wall of the functional bin is fixed with a pushing bin main body, the inner side of the pushing bin main body is provided with two groups of blocking mechanisms for blocking the ports of the filter pipes.

Further, the blocking mechanism comprises a blocking body, a screw rod body and a handle body, the blocking body is arranged in the functional bin and corresponds to a group of openings in front of the filter pipe, the screw rod body is fixed on the end face of the filter pipe, which is far away from the blocking body, the handle body is fixed on the end, far away from the blocking body, of the screw rod body, the surface of the screw rod body is provided with a thread layer, and the handle body is connected with the inner wall thread of the pushing bin body.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

1. according to the invention, the heat dissipation channels with larger areas are additionally arranged at the two ends of the connecting bin, so that the auxiliary suction fan main body can efficiently dissipate heat inside the pump body, meanwhile, the hollow-out filtering plate sheets are closed at the heat dissipation channels through bolts, the disassembly and the cleaning are convenient, and meanwhile, in order to further improve the heat dissipation capability and save energy and reduce emission, long-strip-shaped heat dissipation sheet plates can be installed among the motor bins distributed in the clearance through the bolts, and through the heat conduction characteristics of the heat dissipation sheet plates, the suction fan main body can efficiently dissipate heat inside the motor bins by using the heat dissipation sheet plates distributed at intervals under the static state.

2. According to the invention, the group of functional bin is additionally arranged between the pump core bin main body and the water inlet connecting pipe, the two groups of channels are arranged in the functional bin, so that liquid flowing through the interior of the water inlet connecting pipe is discharged into the interior of the pump core bin main body in two groups of channels, meanwhile, filter screens with proper apertures are filled in the two groups of filter pipes, so that the whole water flow is filtered in advance in the pump, and the two groups of channels are adopted, so that the other group of channels can be independently used for replacing the filter screens by closing one group of channels regularly, therefore, the water flow does not need to be suspended in the process of replacing the filter screens, and the structural design is reasonable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a bottom view of the present invention;

FIG. 3 is an internal view of the motor compartment of the present invention;

FIG. 4 is a side view of the motor compartment of the present invention;

FIG. 5 is a perspective view of the inner catheter body of the present invention;

FIG. 6 is a front view of a filter tube according to the present invention

The reference numerals in the drawings denote: 1. a pump core bin main body; 2. a drainage pipe connection; 3. a connecting bin; 4. a motor compartment; 5. installing a plug board; 6. a fin plate; 7. installing a jack; 8. a filter plate; 9. a limiting plate; 10. a right base; 11. a centrifugal wheel body; 12. a servo motor; 13. a butt joint pipe body; 14. a functional bin; 15. a communicating pipe; 16. a water inlet connecting pipe; 17. an inner catheter body; 18. a filter tube; 19. a blocking body; 20. a screw body; 21. pushing the bin main body; 22. a handle body; 23. a left base; 24. a suction fan main body.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

The present invention will be further described with reference to the following examples.

Example 1

A high temperature resistant centrifugal pump of this embodiment, as shown in fig. 1, fig. 2 and fig. 3, includes a pump core chamber main body 1, a centrifugal wheel main body 11 installed inside the pump core chamber main body 1, and a servo motor 12 installed at one side of the centrifugal wheel main body 11, the positions contacting with water flow are made of traditional high temperature resistant materials, so that the whole pump body has high temperature resistant capability, a water discharge connection pipe 2 is fixed at the top of the pump core chamber main body 1, the servo motor 12 is used as a driving member to drive the centrifugal wheel main body 11 to rotate, the centrifugal wheel main body 11 is located inside the pump core chamber main body 1, the centrifugal wheel main body 11 rotates to make liquid inside the pump core chamber main body 1 generate centrifugal motion, so that liquid is sucked from the water inlet connection pipe 16 end and discharged from the water discharge connection pipe 2 end, a connection chamber 3 is installed on the outer wall of the pump core chamber main body 1 through a bolt, a motor chamber 4 is installed on one side of the connection chamber 3 away from the pump core chamber main body 1 through a bolt, connect storehouse 3 and motor storehouse 4 and be used for storing servo motor 12, and the junction all adopts the bolt fastening, thereby make whole centrifugal pump dismantle more easily, motor storehouse 4 is kept away from one side of connecting storehouse 3 and is installed suction fan main part 24 through the bolt, it can realize the high-speed discharge of the inside air current in motor storehouse 4 to start suction fan main part 24, the outer wall laminating of connecting storehouse 3 has filter plate 8, filter plate 8's lateral wall is fixed with limiting plate 9, filter plate 8 adopts the fretwork arc, and limiting plate 9 passes through the bolt with the outer wall of connecting storehouse 3 and can dismantle, the arc trompil of seting up on the surface of connecting storehouse 3 utilizes the filter plate 8 of fretwork to carry out the closure, realize gaseous suction through the filter plate 8 of fretwork, collocation suction fan main part 24 can make the inside in motor storehouse 4 have a set of air current passageway, thereby discharge the inside heat in motor storehouse 4 fast.

Example 2

As shown in fig. 1 and 4, the side wall of the motor compartment 4 is provided with a hole-opening heat dissipation mechanism, the hole-opening heat dissipation mechanism comprises an inserting plate 5, a fin plate 6 and an inserting hole 7, the fin plate 6 is attached to the side wall of the motor compartment 4, the inserting plate 5 is fixed on the side wall of the motor compartment 4 and is positioned below the fin plate 6, the inserting hole 7 is arranged at the upper end of the inserting hole 7, the inside of the fin plate 6 is provided with a threaded hole corresponding to the inserting hole 7, the motor compartment 4 and the fin plate 6 are distributed in an annular alternative manner, a U-shaped structure is formed between two adjacent groups of motor compartments 4 and the fin plate 6, the fin plate 6 is installed between the inserting plates 5 fixedly connected with the side walls of the two groups of motor compartments 4 by a bolt installation manner, the height of the installed fin plate 6 is smaller than that of the two groups of motor compartments 4, the motor compartments 4 and the fin plate 6 are in the U-shaped structure, so that the motor compartment 4 utilizes the external structure of the fin plate 6, avoid personnel direct touch to the surface of fin plate 6, play the safety guarantee effect, long banding fin plate 6 after the installation is accomplished is through its heat conduction characteristic, and the heat that will gather in the bottom surface of fin plate 6 is discharged to the top of fin plate 6 to realize the radiating effect, and because fin plate 6 adopts the bolt installation, easily dismantle the change after long-time the use.

As shown in fig. 1, 5 and 6, a butt joint pipe body 13 is installed on one side of the pump core bin body 1 far from the connection bin 3 through a bolt, a functional bin 14 is installed on one side of the butt joint pipe body 13 far from the pump core bin body 1 through a bolt, the functional bin 14 is of a square structure and is communicated with the butt joint pipe body 13, a communicating pipe 15 is arranged on one side of the functional bin 14 far from the butt joint pipe body 13, a water inlet connecting pipe 16 is fixed on one end of the communicating pipe 15 far from the functional bin 14, two groups of communicating pipes 15 are distributed in a V-shaped manner, the front ends of the two groups of communicating pipes 15 are gathered into a group of channels and connected with the water inlet connecting pipe 16, an inner conduit body 17 is arranged inside the functional bin 14, two groups of inner conduit bodies 17 are correspondingly connected to the rear ends of the two groups of communicating pipes 15, one port of the inner conduit body 17 is communicated with one end of the communicating pipe 15 far from the water inlet connecting pipe 16, and the other end of the inner conduit body 17 is communicated with a filter pipe 18, when water flow is introduced, firstly, water flow enters the pump body through the water inlet connecting pipe 16, then the water flow passing through the water inlet connecting pipe 16 is discharged into the inner pipe body 17 along the channels of the two groups of communicating pipes 15, and is discharged into the functional bin 14 along the filtering pipe 18 connected with the rear ends of the two groups of inner pipe bodies 17, and is discharged into the pump core bin body 1 through the butt-joint pipe body 13 communicated with the functional bin 14 so as to carry out centrifugal motion.

Example 3

As shown in fig. 1, 5 and 6, a pushing chamber body 21 is fixed on the side wall of the functional chamber 14, and a blocking mechanism for blocking one set of ports of the filter tubes 18 is disposed on the inner side of the pushing chamber body 21, the blocking mechanism can close and block one set of ports of the filter tubes 18 to discharge from another set of filter tubes 18, and the blocking mechanism is provided in two sets, the blocking mechanism includes a blocking body 19, a screw body 20 and a handle body 22, the blocking body 19 is disposed inside the functional chamber 14 and is correspondingly disposed in front of one set of openings of the filter tubes 18, the screw body 20 is fixed on an end surface of the blocking body 19 far away from the filter tubes 18, the handle body 22 is fixed on an end of the screw body 20 far away from the blocking body 19, a thread layer is disposed on the surface of the screw body 20, and the handle body 22 is in threaded connection with the inner wall of the pushing chamber body 21, because impurities in the filter screen bundle inside the filter tubes 18 can cause blocking for a long time, the filter screen inside the filter pipe 18 needs to be removed and replaced regularly, the end part of the handle body 22 is held, the handle body 22 is rotated by utilizing the threaded connection of the screw rod body 20 and the pushing bin main body 21, the blocking body 19 at the front end of the screw rod body 20 is close to the filter pipe 18, and finally the blocking body 19 extends into the channel inside the filter pipe 18, so that the channels inside the inner conduit body 17 and the filter pipe 18 can be closed, one end with the filter screen cannot pass through water flow, the water flow guided into the water inlet connecting pipe 16 can only pass through the inside of the inner conduit body 17 of the other group, then the cover body of the functional bin 14 can be roughly closed, the filter screen filled inside the filter pipe 18 can be cleaned, and the filter screen inside the other group of filter pipe 18 can be cleaned according to the same operation.

In summary, the centrifugal pump adopts high temperature resistant materials to enable the whole pump body to have high temperature resistance and simultaneously have strong heat dissipation effect, when the centrifugal pump needs to be used, the joints of the whole centrifugal pump are respectively butted and then installed by using bolts, the left base 23 and the right base 10 are respectively arranged at the two sides of the pump body, the two sides are symmetrically supported, so that the whole centrifugal pump is more stably supported when in a working state, then the front end of the water inlet connecting pipe 16 is connected into a water pipe to be discharged, the upper end of the water outlet connecting pipe 2 is connected into a pipe orifice to be discharged, then the device is reinforced by using the bolts, the device can be started subsequently, the servo motor 12 is started after an external power supply, the centrifugal wheel main body 11 connected with the output end of the servo motor 12 rotates in the pump core bin main body 1, the centrifugal wheel main body 11 in the rotating state enables the inside of the pump core bin main body 1 to generate centrifugation, water flow discharged from the joint pipe main body 13 to the central point of the pump core main body 1 generates centrifugal motion, the water flow moves to the periphery of the centrifugal wheel main body 11 and is sucked out upwards from the drainage connecting pipe 2 through centrifugal force, the centrifugal wheel main body 11 is adopted in the pump body for rotating and stirring, so that more debris impurities in the water flow are prevented from colliding with the centrifugal wheel main body 11 for a long time, two groups of filter pipes 18 which are symmetrical up and down are arranged in the centrifugal wheel main body 11, the filter pipes 18 are of a three-way pipe structure, one group of interfaces are communicated with the rear end of the inner pipe body 17, the other interfaces are correspondingly arranged in front of the blocking body 19, and the last group of interfaces are directly and laterally arranged in the functional bin 14 and are communicated with the functional bin 14;

the front ends of two groups of communicating pipes 15 which are distributed in a V shape are gathered and then connected with a water inlet connecting pipe 16, so that water flowing through the water inlet connecting pipe 16 is discharged into the insides of two groups of corresponding inner pipe bodies 17 through two groups of communicating pipes 15 respectively in two groups of channels, then flows from the insides of the inner pipe bodies 17 to the insides of filter pipes 18, a plurality of layers of filter screens with different pore sizes are arranged in an opening at one end of each filter pipe 18 which is far away from the filter pipes 18, impurities flowing to the insides of a pump core cabin main body 1 are filtered to a certain degree through the filter screens, after the filter screens are used for a long time, the pore sizes of the filter screens are gradually covered by the impurities, so that the inside of the whole centrifugal pump is filtered by water pressure, therefore, a handle body 22 can be held regularly, a blocking body 19 with a columnar structure is plugged into one end of each filter pipe 18 in a rotating mode by utilizing the blocking body 19 to close the connecting part of the inner pipe bodies 17 and the filter pipes 18, therefore, the filter pipe 18 with a section of the filter screen cannot pass through water flow, all water flow is discharged into the butt joint pipe main body 13 through the filter pipe 18 for closing the channel of the inner pipe body 17, then the corresponding upper cover and the lower cover of the functional bin 14 can be opened, the whole filter pipe 18 is exposed, then the filter screen filled in the filter pipe 18 can be taken out for cleaning, and then the normal water supply can be recovered by operating the handle body 22 in the following direction;

the whole centrifugal pump is in a high-efficiency working state during working, the servo motor 12 causes the inside of the whole motor bin 4 and the connecting bin 3 to generate large heat, the service life of the servo motor 12 in a high heat state for a long time is greatly shortened, in order to improve heat extraction, the inserting plates 5 are symmetrically arranged in the gaps on the surface of the motor bin 4, the inserting holes 7 are arranged in each group of inserting plates 5, the strip-shaped radiating plate 6 with a heat conduction function can be directly covered above the two groups of inserting plates 5, the radiating plate 6 and the inserting plates 5 are reinforced by bolts, the bolt fixing of the surface limiting plate 9 of the connecting bin 3 is also provided with a group of filter plates 8 with large area, the inside of the whole connecting bin 3 is provided with a flow channel of air through the filter plates 8 and the suction fan main body 24, and the heat is efficiently exhausted under the action of the suction fan main body 24, and high-efficiency heat dissipation is realized.

The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The utility model provides a prevent high temperature formula centrifugal pump, includes servo motor (12) of one side-mounting of centrifugal wheel main part (11) and centrifugal wheel main part (11) of pump core storehouse main part (1), pump core storehouse main part (1) internally mounted, its characterized in that: the drainage pipe (2) is fixed at the top of the pump core bin main body (1), the connecting bin (3) is installed on the outer wall of the pump core bin main body (1) through bolts, the motor bin (4) is installed on one side, far away from the pump core bin main body (1), of the connecting bin (3) through bolts, the suction fan main body (24) is installed on one side, far away from the connecting bin (3), of the motor bin (4) through bolts, the filtering plate sheet (8) is attached to the outer wall of the connecting bin (3), the limiting plate (9) is fixed on the side wall of the filtering plate sheet (8), the perforated heat dissipation mechanism is arranged on the side wall of the motor bin (4), the butt joint pipe main body (13) is installed on one side, far away from the connecting bin (3), of the butt joint pipe main body (13) through bolts, and the functional bin (14) is installed on one side, far away from the pump core bin main body (1), through bolts, one side of the functional bin (14) far away from the butt joint pipe main body (13) is provided with a communicating pipe (15), and one end of the communicating pipe (15) far away from the functional bin (14) is fixed with a water inlet connecting pipe (16).

2. A high temperature resistant centrifugal pump as claimed in claim 1, wherein: the filtering plate (8) is a hollow arc-shaped plate, and the limiting plate (9) and the outer wall of the connecting bin (3) are detachable through bolts.

3. A high temperature resistant centrifugal pump according to claim 1, wherein: trompil heat dissipation mechanism is including ann picture peg (5), fin board (6) and ann jack (7), fin board (6) laminate in the lateral wall of motor storehouse (4), ann picture peg (5) are fixed in the lateral wall of motor storehouse (4) just is located the below of fin board (6), ann jack (7) are seted up in the upper end of ann jack (7), the screw hole that corresponds with ann jack (7) is seted up to the inside of fin board (6).

4. A high temperature resistant centrifugal pump as set forth in claim 3, wherein: the motor cabins (4) and the radiating fin plates (6) are distributed in an annular alternative mode, and a U-shaped structure is formed between every two adjacent groups of the motor cabins (4) and the radiating fin plates (6).

5. A high temperature resistant centrifugal pump as claimed in claim 1, wherein: the diapire of function storehouse (14) passes through the bolt fastening and has left base (23), the diapire of connecting storehouse (3) passes through the bolt fastening and has right base (10), left side base (23) and right base (10) opposite distribution in the both sides of butt joint pipe main part (13).

6. A high temperature resistant centrifugal pump as claimed in claim 1, wherein: an inner conduit body (17) is arranged inside the functional bin (14), one end opening of the inner conduit body (17) is communicated with one end, far away from the water inlet connecting pipe (16), of the communicating pipe (15), and the other end of the inner conduit body (17) is communicated and connected with a filter pipe (18).

7. A high temperature resistant centrifugal pump as claimed in claim 6, wherein: the communicating pipes (15) are distributed in two groups in a V shape, and the rear ends of the two groups of communicating pipes (15) are correspondingly connected with the inner conduit body (17).

8. A high temperature resistant centrifugal pump as claimed in claim 1, wherein: the lateral wall of the functional bin (14) is fixed with a pushing bin main body (21), the inner side of the pushing bin main body (21) is provided with a blocking mechanism for blocking the port of the filter pipe (18), and the blocking mechanisms are arranged in two groups.

9. A high temperature resistant centrifugal pump as set forth in claim 8, wherein: the blocking mechanism comprises a blocking body (19), a screw rod body (20) and a handle body (22), the blocking body (19) is arranged in the functional bin (14) and corresponds to a group of openings in front of the filter pipe (18), the screw rod body (20) is fixed on a end face of the blocking body (19) far away from the filter pipe (18), the handle body (22) is fixed on one end of the screw rod body (20) far away from the blocking body (19), the surface of the screw rod body (20) is provided with a thread layer, and the handle body (22) is connected with the inner wall thread of the pushing bin main body (21).