CN219197716U

CN219197716U - Pump cover of centrifugal pump

Info

Publication number: CN219197716U
Application number: CN202223269607.9U
Authority: CN
Inventors: 刘振起
Original assignee: Suzhou City Jiekaili Industrial Equipment Co ltd
Current assignee: Suzhou City Jiekaili Industrial Equipment Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-16
Anticipated expiration: 2032-12-07

Abstract

The utility model discloses a centrifugal pump cover, which comprises a cover body, wherein the cover body is provided with a mounting surface buckled with a centrifugal pump body; the outer circular surface of the cover body is provided with a mounting ring plate, the mounting ring plate is flush with the mounting surface of the cover body, the side of the mounting ring plate is provided with mounting holes, and a plurality of mounting holes are formed around the mounting ring plate; the mounting surface of the cover body is provided with a mounting groove, a top ring is movably inlaid in the mounting groove, a first sealing ring is bonded on one side of the top ring, facing the mounting surface of the cover body, the first sealing ring protrudes out of the mounting groove, one surface, opposite to the mounting surface, of the cover body is threaded, and an adjusting bolt extends into the mounting groove and is abutted to the top ring. This centrifugal pump cover need not to dismantle the centrifugal pump with the lid and changes first sealing washer, can compensate the sealing loss of lid at any time, ensures the leakproofness of lid, and easily installs, and stability is high.

Description

Pump cover of centrifugal pump

Technical Field

The utility model belongs to the technical field of spinning winding, and particularly relates to a pump cover of a centrifugal pump.

Background

Centrifugal pumps operate by using rotation of an impeller to cause centrifugal movement of water. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to do high-speed rotation movement, the water is centrifugally moved and thrown to the outer edge of the impeller, and the water flows into the water pressing pipeline of the water pump through the runner of the volute pump shell. The basic construction of a centrifugal pump is composed of eight parts, namely: impeller, pump body, pump cover, water retaining ring, pump shaft, bearing, sealing ring, stuffing box and axial force balancing device.

The centrifugal pump cover is arranged between the pump body and the motor body, the pump body and the pump cover are combined to collect liquid thrown out from the impeller and guide the liquid to the outlet of the pump, a sealing ring is clamped between the mounting surfaces of the centrifugal pump cover and the centrifugal pump body for sealing the centrifugal pump cover and the centrifugal pump body, however, the applicant finds that in the practical use process of the centrifugal pump, the sealing ring between the centrifugal pump cover and the mounting surface of the centrifugal pump body is worn more or less along with the increase of the service time of the centrifugal pump, the tightness between the centrifugal pump cover and the centrifugal pump body is reduced due to the worn sealing ring, and the sealing ring can be replaced after the pump cover is manually detached from the centrifugal pump body, so that the normal use of the centrifugal pump is influenced.

The foregoing is not necessarily a prior art, and falls within the technical scope of the inventors.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide a pump cover of a centrifugal pump, which can make up the sealing loss of the cover body at any time without detaching the cover body from the centrifugal pump to replace a first sealing ring, ensures the sealing performance of the cover body, is easy to install and has high stability.

In order to achieve the above purpose, the utility model provides a centrifugal pump cover, which comprises a cover body, wherein the cover body is provided with a mounting surface buckled with a centrifugal pump body;

the outer circular surface of the cover body is provided with a mounting ring plate, the mounting ring plate is flush with the mounting surface of the cover body, the side of the mounting ring plate is provided with mounting holes, and a plurality of mounting holes are formed around the mounting ring plate;

the mounting surface of the cover body is provided with a mounting groove, a top ring is movably inlaid in the mounting groove, a first sealing ring is bonded on one side of the top ring, facing the mounting surface of the cover body, the first sealing ring protrudes out of the mounting groove, one surface, opposite to the mounting surface, of the cover body is threaded, and an adjusting bolt extends into the mounting groove and is abutted to the top ring.

In one example, the adjusting bolts are equally spaced around the cover.

In one example, a bearing is rotatably installed on one surface of the top ring, which faces the adjusting bolt, and the adjusting bolt extends into the installation groove to be sleeved with the bearing.

In one example, a second sealing ring is arranged on the mounting surface of the cover body, the second sealing ring is located on the outer side of the first sealing ring, and the second sealing ring is embedded in the cover body.

In one example, a shaft sleeve is arranged at the shaft center of the cover body, a supporting plate is arranged between the shaft sleeve and the inner wall of the cover body, and a plurality of supporting plates are arranged on the supporting plate in a surrounding manner.

In one example, each supporting plate is provided with a diversion hole.

In one example, the mounting hole penetrates through the outer circular surface of the mounting ring plate, a groove is formed in one side, far away from the mounting surface of the cover body, of the mounting ring plate, the groove surrounds the periphery of the mounting hole, and the bottom wall of the groove is provided with a frosting surface.

The centrifugal pump cover provided by the utility model has the following beneficial effects:

through seting up the mounting groove in the installation face one side of lid to movable mosaic top ring in the mounting groove to with first sealing washer bonding on the top ring, along with the lid is installed and is used for a long time to lead to first sealing washer to produce wearing and tearing on the centrifugal pump, only need twist many adjusting bolt promote the top ring with the ejecting mounting groove of first sealing washer, can compensate the wearing and tearing of first sealing washer, this seal structure mode need not to dismantle the centrifugal pump with the lid and change first sealing washer, can compensate sealing loss at any time, ensures the leakproofness of lid, and easy operation.

Through the second sealing ring that the lid installed face set up, can play sealed effect together with first sealing washer, when first sealing washer produced wearing and tearing, the second sealing ring can play the secondary seal effect, provides the buffering time for the wearing and tearing of first sealing washer compensate.

The installation that runs through the installation round plate outer disc through the mounting hole for the screw passes the mounting hole more easily and fixes the installation round plate on the centrifugal pump body, and the installation of easily lid, and the recess of seting up around the mounting hole can be spacing to the screw, and the setting of recess diapire frosting can avoid the screw to skid as far as possible, makes the installation of lid more firm, centrifugal pump overall structure's stability.

Through the backup pad that encircles the setting between axle sleeve and the lid inner wall, can improve the stability of axle sleeve for the axle sleeve can be to the stable spacing support of impeller transmission shaft, and the water conservancy diversion hole of seting up in the backup pad wherein can reduce the backup pad and to the resistance that fluid produced, ensures that this lid installation back, centrifugal pump can steady operation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic view of a mounting surface structure of a pump cover of a centrifugal pump according to the present utility model.

Fig. 2 is a schematic end-face structure of a pump cover of a centrifugal pump according to the present utility model.

Fig. 3 is a cross-sectional view of a pump cover of a centrifugal pump of the present utility model.

Fig. 4 is an enlarged view of fig. 2 a of a pump cap of a centrifugal pump according to the present utility model.

Reference numerals: 1. a cover body; 2. a shaft sleeve; 3. a support plate; 4. a deflector aperture; 5. installing a ring plate; 6. a mounting hole; 7. a first seal ring; 8. a second seal ring; 9. an adjusting bolt; 10. a mounting groove; 11. a top ring; 12. a bearing; 13. a groove.

Detailed Description

In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, the description with reference to the terms "one aspect," "some aspects," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present utility model. In this specification, the schematic representations of the above terms are not necessarily for the same scheme or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in fig. 1 to 4, an embodiment of the utility model provides a pump cover of a centrifugal pump, which comprises a cover body 1, wherein the cover body 1 is provided with a mounting surface buckled with a centrifugal pump body, specifically, an outer circular surface of the cover body 1 is provided with a mounting ring plate 5, the mounting ring plate 5 is flush with the mounting surface of the cover body 1, the side of the mounting ring plate 5 is provided with a plurality of mounting holes 6, the mounting holes 6 are formed around the mounting ring plate 5, when the pump cover is mounted, the mounting surface of the cover body 1 faces one side of the centrifugal pump body, and a screw is used for penetrating the mounting holes 6 to insert into the centrifugal pump body, so that the cover body 1 can be covered on the pump body of the centrifugal pump.

In this embodiment, mounting hole 6 runs through the outer disc of mounting collar plate 5 for the screw passes mounting hole 6 more easily and fixes mounting collar plate 5 on the centrifugal pump body, and the installation of easily lid 1, further, recess 13 has been seted up to one side that mounting collar plate 5 was kept away from lid 1 installation face, and recess 13 encircles around mounting hole 6, and recess 13 diapire sets up to the frosting, and recess 13 of seting up around mounting hole 6 can be spacing to the screw, and the setting of recess 13 diapire frosting can avoid the screw to skid as far as possible, makes the installation of lid 1 more firm, centrifugal pump overall structure's stability.

As a preferred technical scheme of the embodiment, a mounting groove 10 is formed in a mounting surface of the cover body 1, a top ring 11 is movably embedded in the mounting groove 10, a first sealing ring 7 is bonded on one side of the top ring 11, which faces the mounting surface of the cover body 1, the first sealing ring 7 protrudes out of the mounting groove 10, an adjusting bolt 9 is threaded on the surface, opposite to the mounting surface, of the cover body 1, and the adjusting bolt 9 extends into the mounting groove 10 to be abutted against the top ring 11. Through this technical scheme, lid 1 installs and fixes on the centrifugal pump body after, first sealing washer 7 can be to sealing between lid 1 and the centrifugal pump body, along with lid 1 installs and use on the centrifugal pump for a long time and cause behind the first sealing washer 7 to produce wearing and tearing, only need twist many adjusting bolt 9 promote the ejecting mounting groove 10 of top ring 11 with first sealing washer 7, can compensate the wearing and tearing of first sealing washer 7, this seal structure mode need not to dismantle lid 1 centrifugal pump and changes first sealing washer 7, can compensate sealing loss at any time, ensure the leakproofness of lid 1, easy operation.

Further, in this embodiment, the adjusting bolts 9 are disposed at equal intervals around the cover body 1, and the plurality of adjusting bolts 9 are screwed in a crossing manner, so that the top ring 11 can be pushed out smoothly, and the abrasion of the first sealing ring 7 is compensated. Further, the bearing 12 is rotatably installed on one surface of the top ring 11 facing the adjusting bolt 9, the adjusting bolt 9 stretches into the installation groove 10 to be sleeved with the bearing 12, the bearing 12 can avoid abrasion between the adjusting bolt 9 and the top ring 11 in the rotating process of screwing the adjusting bolt 9, and the top ring 11 can be taken out of the installation groove 10 after the adjusting bolt 9 is pulled out of the bearing 12 for replacement and maintenance.

Further, in this embodiment, the second sealing ring 8 is disposed on the mounting surface of the cover body 1, the second sealing ring 8 is located outside the first sealing ring 7, and the second sealing ring 8 is embedded into the cover body 1, the second sealing ring 8 can play a role in sealing together with the first sealing ring 7, and when the first sealing ring 7 is worn, the second sealing ring 8 can play a role in secondary sealing, so as to provide buffer time for the wear compensation of the first sealing ring 7.

As the preferred technical scheme of the embodiment, the shaft sleeve 2 is arranged at the shaft center of the cover body 1, the supporting plate 3 is arranged between the shaft sleeve 2 and the inner wall of the cover body 1, and a plurality of supporting plates are arranged on the supporting plate 3 around the shaft sleeve 2, through the technical scheme, the stability of the shaft sleeve 2 can be improved, and the shaft sleeve 2 can stably and limitedly support the impeller transmission shaft; furthermore, each supporting plate 3 is provided with a diversion hole 4, so that the resistance of the supporting plate 3 to fluid can be reduced, and the centrifugal pump can stably operate after the cover body 1 is installed.

Working principle:

when the centrifugal pump cover is used, the mounting surface of the cover body 1 faces one side of the centrifugal pump body, the cover body 1 can be covered on the centrifugal pump body by penetrating the mounting hole 6 through the screw, wherein the mounting hole 6 penetrates through the arrangement of the outer circular surface of the mounting ring plate 5, the screw can penetrate through the mounting hole 6 to fix the mounting ring plate 5 on the centrifugal pump body more easily, the groove 13 formed around the mounting hole 6 can limit the screw, the screw slipping can be avoided as much as possible due to the arrangement of the frosting surface of the bottom wall of the groove 13, the mounting of the cover body 1 is firmer, and the integral structure of the centrifugal pump is stable. Further, after the cover body 1 is fixed on the centrifugal pump body, the first sealing ring 7 and the second sealing ring 8 can play a sealing role simultaneously, so that sealing connection between the cover body 1 and the centrifugal pump body is ensured, the stability of the shaft sleeve 2 can be improved by encircling the supporting plate 3 arranged between the shaft sleeve 2 and the inner wall of the cover body 1, the shaft sleeve 2 can stably and limitedly support the impeller transmission shaft, the flow guide holes 4 formed in the supporting plate 3 can reduce the resistance of the supporting plate 3 to fluid, and the centrifugal pump can operate in normal yield after the cover body 1 is installed. Further, after the cover body 1 is mounted on the centrifugal pump for a long time in the use process, the first sealing ring 7 will be worn, at this time, only the plurality of adjusting bolts 9 are required to be screwed to push the ejector ring 11 to push the first sealing ring 7 out of the mounting groove 10, so that the wear of the first sealing ring 7 can be compensated, the tightness of the cover body 1 is ensured, and the cover body 1 is not required to be detached from the centrifugal pump to replace the first sealing ring 7, so that the operation is easy.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims

1. The utility model provides a centrifugal pump cover, includes lid (1), lid (1) have the installation face with the lock of centrifugal pump body, its characterized in that:

the outer circular surface of the cover body (1) is provided with a mounting ring plate (5), the mounting ring plate (5) is flush with the mounting surface of the cover body (1), the side of the mounting ring plate (5) is provided with mounting holes (6), and a plurality of mounting holes (6) are formed around the mounting ring plate (5);

the mounting surface of lid (1) has seted up mounting groove (10), the activity has inlayed top ring (11) in mounting groove (10), one side of top ring (11) towards lid (1) mounting surface bonds has first sealing washer (7), first sealing washer (7) protrusion mounting groove (10), one side screw thread that lid (1) and mounting surface are relative wears to be equipped with adjusting bolt (9), adjusting bolt (9) stretch into in mounting groove (10) with top ring (11) butt.

2. A centrifugal pump cover according to claim 1, characterized in that the adjusting bolts (9) are arranged at equal intervals around the cover body (1).

3. A centrifugal pump cover according to claim 1, wherein a bearing (12) is rotatably mounted on one surface of the top ring (11) facing the adjusting bolt (9), and the adjusting bolt (9) extends into the mounting groove (10) to be sleeved with the bearing (12).

4. A centrifugal pump cover according to claim 1, characterized in that a second sealing ring (8) is arranged on the mounting surface of the cover body (1), the second sealing ring (8) is positioned outside the first sealing ring (7), and the second sealing ring (8) is embedded in the cover body (1).

5. The centrifugal pump cover according to claim 1, wherein a shaft sleeve (2) is arranged at the shaft center of the cover body (1), a supporting plate (3) is arranged between the shaft sleeve (2) and the inner wall of the cover body (1), and a plurality of pieces of supporting plates (3) are arranged around the shaft sleeve (2).

6. A centrifugal pump cover according to claim 5, characterized in that each support plate (3) is provided with a deflector hole (4).

7. A centrifugal pump cover according to claim 1, wherein the mounting hole (6) penetrates through the outer circular surface of the mounting ring plate (5), a groove (13) is formed in one side, far away from the mounting surface of the cover body (1), of the mounting ring plate (5), the groove (13) surrounds the periphery of the mounting hole (6), and the bottom wall of the groove (13) is provided with a frosted surface.