CN220134308U - Single-stage centrifugal pump with mechanical seal - Google Patents

Abstract

The utility model discloses a single-stage centrifugal pump with mechanical seal, which relates to the technical field of single-stage centrifugal pumps and comprises a centrifugal pump body, wherein a mechanical seal body is fixedly arranged in the centrifugal pump body, a connecting pipe is communicated with the bottom of the centrifugal pump body, a filter cartridge is communicated with the bottom of the connecting pipe, a filter plate is fixedly connected with the inside of the filter cartridge, the filter plate is positioned at one end of the filter cartridge far away from the connecting pipe, a rotating shaft is rotatably connected to one side of the filter plate, which is close to the connecting pipe, a sliding cylinder is fixedly connected to the outside of the rotating shaft, a scraping strip is fixedly connected to the outer wall of the sliding cylinder, and the scraping strip is in sliding fit with the filter plate. This single-stage centrifugal pump with mechanical seal, the washing liquid is by the in-process that the connecting tube got into cartridge filter, drives the pivot through the blade and rotates, and the pivot rotates and drives a smooth section of thick bamboo and rotate, and then scrapes the strip and push away the filter, avoids the filter to appear the condition of jam, improves the cleaning efficiency of mechanical seal body.

Description

Single-stage centrifugal pump with mechanical seal

Technical Field

The utility model relates to the technical field of single-stage centrifugal pumps, in particular to a single-stage centrifugal pump with a mechanical seal.

Background

The centrifugal pump is a device for completing fluid conveying by driving fluid to rotate through centrifugal force generated by an impeller of the rotary pump, and the basic structure of the centrifugal pump comprises six parts, namely an impeller, a pump body, a pump shaft, a bearing, a sealing ring and a stuffing box, wherein the impeller is a core part of the centrifugal pump, the impeller has high rotating speed and high output, the blades on the impeller play a main role, and the inner surface and the outer surface of the impeller are required to be smooth before the impeller is assembled through a static balance experiment so as to reduce friction loss of water flow.

The names are as follows: a centrifugal pump mechanical seal flushing device (patent application number: CN 202123244608.3) is disclosed in the patent, which is convenient for disassembling and cleaning a filter screen from the inside of a water tank, and can avoid the phenomenon that impurities are blocked in the inside of meshes to influence water flow, while impurities on the filter screen need to be disassembled and cleaned, so that the impurities still can be blocked by the impurities in the use process before the disassembling operation, and the water flow speed is reduced.

Therefore, it is necessary to invent a single stage centrifugal pump with mechanical seal to solve the above problems.

Disclosure of Invention

The present utility model aims to provide a single-stage centrifugal pump with a mechanical seal to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a single-stage centrifugal pump with mechanical seal, includes the centrifugal pump body, the inside fixed mounting of centrifugal pump body has the mechanical seal body, the bottom intercommunication of centrifugal pump body has the connecting tube, the bottom intercommunication of connecting tube has the cartridge filter, the inside fixedly connected with filter of cartridge filter, the one end of connecting tube is kept away from to the filter, one side rotation that the filter is close to the connecting tube is connected with the pivot, the outside fixedly connected with slide cartridge of pivot, fixedly connected with scrapes the strip on the outer wall of slide cartridge, scrape strip slip laminating on the filter.

Preferably, a sliding rod is arranged at one end of the sliding cylinder far away from the rotating shaft in a sliding manner, a first spring is arranged in the sliding cylinder, one end of the first spring is fixedly connected to the sliding rod, and the other end of the first spring is fixedly connected to the inner wall of the sliding cylinder.

Preferably, the square opening has been seted up to the bottom of cartridge filter, the inside fixedly connected with of square opening collects the box, the both sides at collection box top all articulate there is the baffle, the baffle is arciform structure, the baffle is the concave surface towards the one side of pivot, the bottom fixedly connected with second spring of baffle, the one end fixedly connected with that the baffle was kept away from to the second spring is on collecting the box inner wall.

Preferably, the outside fixedly connected with blade of pivot, the blade corresponds with the connecting tube and distributes, the blade sets up to three, and three blade is around the outside evenly distributed at the pivot.

Preferably, the inside cavity of having seted up of wall body of centrifugal pump body, the cavity corresponds with the mechanical seal body and distributes, the cavity is located the upper half of centrifugal pump body, the liquid outlet has been seted up at the top of centrifugal pump body inner wall, liquid outlet and cavity intercommunication.

Preferably, the outside intercommunication of cartridge filter has the micropump, the micropump is located the filter plate and is located the one side of connecting tube dorsad, the intercommunication has the liquid pipe on the play liquid end of micropump, the one end and the cavity intercommunication that the micropump was kept away from to the liquid pipe.

The utility model has the technical effects and advantages that:

1. in the process that the cleaning liquid enters the filter cartridge from the connecting pipe, the rotating shaft is driven to rotate by the blades, the sliding drum is driven to rotate by the rotating shaft, the scraping strips push and scrape the filter plate, the condition that the filter plate is blocked is avoided, and the cleaning efficiency of the mechanical seal body is improved;

2. the pivot rotates and drives a smooth section of thick bamboo rotation, when the upper surface at the baffle of slide bar butt, the elasticity of first spring makes the slide bar outwards slide, and then extrudees the baffle and turn down, opens the opening at collecting box top, and granule impurity drops to the inside of collecting the box, and along with the pivoted continuation rotation of pivot, the baffle breaks away from the extrusion of slide bar, the resilience that resets of second spring makes the baffle reset, and the opening that will collect the box is closed, prevents impurity run out, improves the treatment effeciency of impurity.

Drawings

Fig. 1 is a schematic view of a single stage centrifugal pump with mechanical seal according to the present utility model.

Fig. 2 is a schematic view of the structure of the centrifugal pump body, the cavity and the liquid outlet of the utility model.

Fig. 3 is a schematic view of the structure of the filter cartridge, filter plate, rotary shaft and vane of the present utility model.

Fig. 4 is an enlarged schematic view of the structure of fig. 3 a according to the present utility model.

FIG. 5 is a schematic view of the structure of the slide cylinder, slide bar and scraper bar of the present utility model.

Fig. 6 is a schematic view of the structure of the collecting box, the baffle plate and the second spring of the present utility model.

In the figure: 1. a centrifugal pump body; 2. a mechanical seal body; 3. a connecting pipe; 4. a filter cartridge; 5. a filter plate; 6. a rotating shaft; 7. a blade; 8. a slide cylinder; 9. scraping the strip; 10. a slide bar; 11. a square opening; 12. a first spring; 13. a collection box; 14. a baffle; 15. a second spring; 16. a cavity; 17. a liquid outlet; 18. a liquid pipe; 19. a micropump.

Detailed Description

The technical solutions in the embodiments of the present utility model will be made clear below in conjunction with the drawings in the embodiments of the present utility model; it will be apparent that the embodiments described are only some, but not all, of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a single-stage centrifugal pump with a mechanical seal, which is shown in fig. 1-6, and comprises a centrifugal pump body 1, wherein the mechanical seal body 2 is fixedly arranged in the centrifugal pump body 1. The bottom intercommunication of centrifugal pump body 1 has connecting tube 3, and the bottom intercommunication of connecting tube 3 has cartridge filter 4, and during the concrete use, the outside of cartridge filter 4 sets up annotates the liquid mouth, before the operation of using, is annotated the washing liquid to cartridge filter 4 inside by annotating the liquid mouth, and then washs mechanical seal body 2. Inside fixedly connected with filter 5 of cartridge filter 4, the one end that the connecting tube 3 was kept away from to cartridge filter 4 is located to filter 5, and the washing liquid can produce the granule impurity when wasing mechanical seal body 2, and filter 5 can carry out filtration treatment to the granule impurity in the washing liquid. One side that filter 5 is close to connecting pipe 3 rotates and is connected with pivot 6, and the outside fixedly connected with blade 7 of pivot 6, blade 7 and connecting pipe 3 correspond to be distributed, and blade 7 sets up to three, and three blade 7 evenly distributed around the outside at pivot 6. In the process that the cleaning liquid enters the filter cartridge 4 through the connecting pipe 3, the rotating shaft 6 is driven to rotate through the blades 7. The outside fixedly connected with slide 8 of pivot 6, fixedly connected with scrapes strip 9 on the outer wall of slide 8, scrapes strip 9 slip laminating on filter 5. The rotating shaft 6 rotates to drive the sliding cylinder 8 to rotate, and then the scraping strip 9 pushes and scrapes the filter plate 5, so that the filter plate 5 is prevented from being blocked.

During operation, the washing liquid is by the in-process that the connecting tube 3 got into cartridge filter 4, drives pivot 6 through blade 7 and rotates, and pivot 6 rotates and drives smooth section of thick bamboo 8 and rotate, and then scrapes strip 9 and push away the scraping to filter 5, avoids filter 5 to appear the condition of jam, improves the cleaning efficiency of mechanical seal body 2.

One end of the sliding cylinder 8 far away from the rotating shaft 6 is slidably provided with a sliding rod 10, a first spring 12 is arranged in the sliding cylinder 8, one end of the first spring 12 is fixedly connected to the sliding rod 10, and the other end of the first spring 12 is fixedly connected to the inner wall of the sliding cylinder 8. When the filter cartridge is particularly used, arc-shaped cuts are formed in the upper surface and the lower surface of the slide rod 10, which are positioned at one end outside the slide cylinder 8, so that the slide rod 10 can conveniently slide on the inner wall of the filter cartridge 4 in a abutting manner.

Square opening 11 is opened to cartridge filter 4's bottom, and square opening 11's inside fixedly connected with collects box 13. Both sides at the top of the collecting box 13 are hinged with baffle plates 14, the baffle plates 14 are arc-shaped structures, and one surface of the baffle plates 14 facing the rotating shaft 6 is a concave surface. The baffle plates 14 are convenient to be matched with the slide bars 10, and the clamping phenomenon can not occur when the two baffle plates 14 are extruded. The bottom fixedly connected with second spring 15 of baffle 14, the one end fixed connection that second spring 15 kept away from baffle 14 is on collecting box 13 inner wall, and second spring 15 is used for the reset of baffle 14.

During operation, the rotating shaft 6 rotates to drive the sliding cylinder 8 to rotate, when the sliding rod 10 abuts against the upper surface of the baffle 14, the elastic force of the first spring 12 enables the sliding rod 10 to slide outwards, the baffle 14 is extruded to turn downwards, the opening at the top of the collecting box 13 is opened, particle impurities fall into the collecting box 13, the baffle 14 is separated from the extrusion of the sliding rod 10 along with the continuous rotation of the rotating shaft 6, the reset elastic force of the second spring 15 enables the baffle 14 to reset, the opening of the collecting box 13 is closed, the impurities are prevented from escaping, and the treatment efficiency of the impurities is improved.

The centrifugal pump body 1 is provided with a cavity 16 in the wall body, the cavity 16 and the mechanical seal body 2 are correspondingly distributed, and the cavity 16 is positioned at the upper half end of the centrifugal pump body 1. A liquid outlet 17 is arranged at the top of the inner wall of the centrifugal pump body 1, and the liquid outlet 17 is communicated with the cavity 16.

The outside of the filter cartridge 4 is connected with a micro pump 19, and the micro pump 19 is positioned on the side of the filter plate 5 facing away from the connecting tube 3. The liquid outlet end of the micro pump 19 is communicated with a liquid pipe 18, and one end of the liquid pipe 18 away from the micro pump 19 is communicated with the cavity 16. The micro pump 19 conveys the filtered cleaning liquid into the cavity 16 through the liquid pipe 18, and then the cleaning liquid is sprayed to the mechanical seal body 2 through the liquid outlet 17, so that the cleaning liquid can be recycled.

Claims (6)

1. Single-stage centrifugal pump with mechanical seal, comprising a centrifugal pump body (1), characterized in that: the inside fixed mounting of centrifugal pump body (1) has mechanical seal body (2), the bottom intercommunication of centrifugal pump body (1) has connecting tube (3), the bottom intercommunication of connecting tube (3) has cartridge filter (4), the inside fixedly connected with filter (5) of cartridge filter (4), filter (5) are located the one end that connecting tube (3) was kept away from to cartridge filter (4), one side rotation that is close to connecting tube (3) of filter (5) is connected with pivot (6), the outside fixedly connected with slide (8) of pivot (6), fixedly connected with scrapes strip (9) on the outer wall of slide (8), scrape strip (9) slip laminating on filter (5).

2. A single stage centrifugal pump with mechanical seal according to claim 1, wherein: one end of the sliding cylinder (8) far away from the rotating shaft (6) is provided with a sliding rod (10) in a sliding manner, a first spring (12) is arranged in the sliding cylinder (8), one end of the first spring (12) is fixedly connected to the sliding rod (10), and the other end of the first spring (12) is fixedly connected to the inner wall of the sliding cylinder (8).

3. A single stage centrifugal pump with mechanical seal according to claim 2, characterized in that: square mouth (11) have been seted up to the bottom of cartridge filter (4), the inside fixedly connected with of square mouth (11) collects box (13), the both sides at collection box (13) top all articulate have baffle (14), baffle (14) are arc-shaped structure, the one side of baffle (14) towards pivot (6) is the concave surface, the bottom fixedly connected with second spring (15) of baffle (14), the one end fixedly connected with that baffle (14) was kept away from to second spring (15) is on collection box (13) inner wall.

4. A single stage centrifugal pump with mechanical seal according to claim 1, wherein: the outside fixedly connected with blade (7) of pivot (6), blade (7) and connecting tube (3) correspond and distribute, blade (7) set up to three, and the outside evenly distributed of three blade (7) around pivot (6).

5. A single stage centrifugal pump with mechanical seal according to claim 1, wherein: the centrifugal pump is characterized in that a cavity (16) is formed in the wall body of the centrifugal pump body (1), the cavity (16) is distributed corresponding to the mechanical seal body (2), the cavity (16) is located at the upper half end of the centrifugal pump body (1), a liquid outlet (17) is formed in the top of the inner wall of the centrifugal pump body (1), and the liquid outlet (17) is communicated with the cavity (16).

6. A single stage centrifugal pump with mechanical seal according to claim 5, wherein: the outside intercommunication of cartridge filter (4) has micropump (19), micropump (19) are located one side that filter (5) were kept away from connecting tube (3), the intercommunication has liquid pipe (18) on the play liquid end of micropump (19), the one end and cavity (16) intercommunication that micropump (19) were kept away from to liquid pipe (18).