CN221723111U - Vertical multistage centrifugal pump water sealing cover - Google Patents

Abstract

The utility model discloses a vertical multi-stage centrifugal pump water sealing cover, including a flange, one side of the flange is fixedly connected with a delivery pipe, the side wall of the delivery pipe is slidably connected with a sealing plate, the side wall of the delivery pipe is sleeved with a contact pipe, the sealing plate is slidably connected with the contact pipe, a sealing ring is provided on the side of the flange away from the delivery pipe, an auxiliary mechanism for assisting the sealing ring to seal is provided on the opposite side wall of the sealing ring and the flange, and a fitting mechanism for fitting the sealing plate and the flange is provided on the opposite side wall of the sealing plate and the flange. The utility model clamps and fixes the sealing ring through the fitting and contact between the sealing plate and the flange, and at the same time, the sealing ring is sleeved in the sealing plate, which can improve the tightness of the sealing ring to the flange connection, and at the same time, under the elastic contact and tightness between the contact pipe and the sealing plate, the stability of the sealing plate during use can be guaranteed.

Description

A vertical multi-stage centrifugal pump water sealing cover

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a vertical multi-stage centrifugal pump water sealing cover.

Background Art

Vertical multistage centrifugal pumps are mainly suitable for water supply and drainage in urban high-rise buildings, fire-fighting water, water supply and drainage in factories and mines, long-distance water transmission, water in production process cycles, HVAC cycles, domestic water and many other uses.

The water sealing cover is a major component of a vertical multistage centrifugal pump. When in use, it plays the role of sealing and blocking water at the water inlet and outlet of the multistage centrifugal pump. When in use, it plays the role of sealing and blocking water at the water inlet of the multistage centrifugal pump. When in use, it plays the role of sealing the pipe at the water inlet and blocking water. When in use, the existing water sealing cover is connected to the water inlet and outlet through a rubber sleeve. Therefore, after long-term use, when the rubber sleeve loses its elasticity, its sealing and water-blocking properties will be significantly reduced, affecting the sealing of the water inlet and outlet of the centrifugal pump as well as the waterproof and rust-proof effects, thereby affecting the life of the centrifugal pump.

Utility Model Content

The utility model aims to solve the shortcomings in the prior art and proposes a vertical multi-stage centrifugal pump water sealing cover.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A vertical multi-stage centrifugal pump water sealing cover comprises a flange, one side of the flange is fixedly connected to a delivery pipe, the side wall of the delivery pipe is slidably connected to a sealing plate, the side wall of the delivery pipe is sleeved with a contact tube, the sealing plate is slidably connected to the contact tube, a sealing ring is provided on the side of the flange away from the delivery pipe, an auxiliary mechanism for assisting the sealing ring in sealing is provided on the opposite side wall of the sealing ring and the flange, and a fitting mechanism for fitting the sealing plate and the flange is provided on the opposite side wall of the sealing plate and the flange.

Preferably, the auxiliary mechanism includes an outer fitting groove and an inner fitting groove opened on one side of the flange close to the sealing ring, and the inner fitting ring and the outer fitting ring are fixedly connected on both sides of the sealing ring, the inner fitting ring corresponds to the inner fitting groove, and the outer fitting ring corresponds to the outer fitting groove.

Preferably, the fitting mechanism comprises a corresponding ring fixedly connected to a side of the sealing plate close to the flange, a sealing groove is provided on a side of the flange close to the sealing plate, and the sealing groove is fitted correspondingly to the corresponding ring.

Preferably, the contact tube is a conical structure.

Preferably, the side wall of the sealing plate is fixedly connected with a plurality of circumferentially arranged mounting frames, and the side walls of the sealing plate and the sealing ring are both provided with a plurality of circumferentially arranged connecting holes, and the plurality of connecting holes correspond to the mounting holes of the flange.

Preferably, an extension ring is fixedly connected to one side of the sealing plate close to the flange, and the extension ring is sleeved on the outer edge side wall of the sealing ring.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model is provided with a sealing plate, a contact tube, an extension ring and a sealing ring. The sealing ring is clamped and fixed by the fitting and contact between the sealing plate and the flange. At the same time, the sealing ring is sleeved in the sealing plate, which can improve the tightness of the sealing ring to the flange connection. At the same time, under the elastic contact and tightness between the contact tube and the sealing plate, the stability of the sealing plate during use can be guaranteed.

2. The utility model is provided with structures such as an inner fitting ring, an inner fitting groove, an outer fitting ring and an outer fitting groove. Through the corresponding fitting between the inner fitting ring and the inner fitting groove, and the corresponding fitting between the outer fitting ring and the outer fitting groove, the extrusion of the inner fitting ring and the outer fitting ring can be reduced, thereby increasing the service life of the sealing ring. At the same time, the fit between the sealing ring and the flange connection is improved, thereby improving the sealing performance of the flange connection.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the front view of a vertical multi-stage centrifugal pump water sealing cover proposed by the utility model;

FIG2 is a schematic diagram of the side structure of a vertical multi-stage centrifugal pump water sealing cover proposed by the utility model;

FIG3 is a schematic diagram of the structure of the inner fitting groove of the water sealing cover of a vertical multi-stage centrifugal pump proposed by the utility model.

In the figure: 1 flange, 2 outer fitting groove, 3 sealing ring, 4 outer fitting ring, 5 inner fitting ring, 6 conveying pipe, 7 contact pipe, 8 sealing plate, 9 extension ring, 10 corresponding ring, 11 sealing groove, 12 mounting frame, 13 inner fitting groove, 14 connecting hole.

DETAILED DESCRIPTION

In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

1-3, a vertical multi-stage centrifugal pump water sealing cover includes a flange 1, a delivery pipe 6 is fixedly connected to one side of the flange 1, a sealing plate 8 is slidably connected to the side wall of the delivery pipe 6, a plurality of circumferentially arranged mounting frames 12 are fixedly connected to the side wall of the sealing plate 8, a plurality of circumferentially arranged connecting holes 14 are opened on the side walls of the sealing plate 8 and the sealing ring 3, and the plurality of connecting holes 14 correspond to the mounting holes of the flange 1;

A contact tube 7 is sleeved on the side wall of the delivery tube 6, and a sealing plate 8 is slidably connected to the contact tube 7. The contact tube 7 is a conical structure. A sealing ring 3 is provided on the side of the flange 1 away from the delivery tube 6. An extension ring 9 is fixedly connected to the side of the sealing plate 8 close to the flange 1. The extension ring 9 is sleeved on the outer edge side wall of the sealing ring 3.

The sealing ring 3 and the opposite side walls of the flange 1 are provided with an auxiliary mechanism for assisting the sealing of the sealing ring 3. The auxiliary mechanism includes an outer fitting groove 2 and an inner fitting groove 13 which are opened on the side of the flange 1 close to the sealing ring 3. The inner fitting ring 5 and the outer fitting ring 4 are fixedly connected on both sides of the sealing ring 3. The inner fitting ring 5 corresponds to the inner fitting groove 2, and the outer fitting ring 4 corresponds to the outer fitting groove 13.

The sealing plate 8 and the flange 1 have opposite side walls provided with a fitting mechanism for fitting the sealing plate 8 and the flange 1. The fitting mechanism includes a corresponding ring 10 fixedly connected to the sealing plate 8 on the side close to the flange 1. A sealing groove 11 is provided on the side close to the sealing plate 8. The sealing groove 11 fits correspondingly with the corresponding ring 10.

When the utility model is used, as shown in Figures 1-3, the sealing plate 8 is first slidably sleeved on the contact tube 7. At this time, the sealing plate 8 slides and squeezes the contact tube 7. At this time, the contact tube 7 is squeezed and deformed, and the contact sealing between the sealing plate 8 and the conveying pipe 6 is maintained by squeezing and deforming. At this time, the corresponding rings 10 on the opposite side walls of the sealing plate 8 and the flange 1 are in corresponding contact with the sealing groove 11, providing a contact buffer for the contact part between the sealing plate 8 and the flange 1, avoiding the hard contact between the sealing plate 8 and the flange 1 causing damage to the flange 1 and affecting the normal use of the centrifugal pump, and then the sealing ring 3 is placed It is placed at the connection between the flange 1 and the conveying pipeline. At this time, the inner fitting ring 5 of the side wall of the sealing ring 3 is in corresponding contact with the inner fitting groove 13, and the outer fitting ring 5 is in corresponding contact with the outer fitting groove 2. The inner fitting ring 5 and the outer fitting ring 4 provide elastic buffer for the sealing ring 3, reduce its elastic extrusion wear during use, and thus extend its service life. At this time, the extension ring 9 is sleeved on the side wall of the sealing ring 3. At this time, the connecting hole 14 corresponds to the mounting hole of the flange 1, and the sealing plate 8 and the sealing ring 3 are connected to the flange 1 accordingly to ensure their fit, thereby improving the sealing and water resistance of the overall structure.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims (6)

1. The utility model provides a vertical multistage centrifugal pump water sealing lid, includes flange (1), its characterized in that, one side fixedly connected with conveyer pipe (6) of flange (1), the lateral wall sliding connection of conveyer pipe (6) has closing plate (8), the lateral wall cover of conveyer pipe (6) is equipped with contact tube (7), closing plate (8) sliding connection contact tube (7), one side that conveyer pipe (6) was kept away from to flange (1) is equipped with sealing ring (3), sealing ring (3) are equipped with the complementary unit who is used for assisting sealing ring (3) sealedly with the opposite side wall of flange (1), the opposite side wall of closing plate (8) and flange (1) is equipped with the laminating mechanism that is used for closing plate (8) and flange (1) laminating.

2. The water sealing cover of the vertical multistage centrifugal pump according to claim 1, wherein the auxiliary mechanism comprises an outer attaching groove (2) and an inner attaching groove (13) which are formed in one side, close to the sealing ring (3), of the flange (1), two sides of the sealing ring (3) are fixedly connected with an inner attaching ring (5) and an outer attaching ring (4), the inner attaching ring (5) corresponds to the inner attaching groove (13), and the outer attaching ring (4) corresponds to the outer attaching groove (2).

3. The water sealing cover of the vertical multistage centrifugal pump according to claim 2, wherein the attaching mechanism comprises a corresponding ring (10) fixedly connected to one side, close to the flange (1), of the sealing plate (8), a sealing groove (11) is formed in one side, close to the sealing plate (8), of the flange (1), and the sealing groove (11) is attached to the corresponding ring (10) correspondingly.

4. A vertical multistage centrifugal pump water seal according to claim 3, characterized in that the contact tube (7) is of conical construction.

5. The water sealing cover of the vertical multistage centrifugal pump according to claim 4, wherein a plurality of circumferentially arranged mounting frames (12) are fixedly connected to the side wall of the sealing plate (8), a plurality of circumferentially arranged connecting holes (14) are formed in the side walls of the sealing plate (8) and the sealing ring (3), and the connecting holes (14) correspond to the mounting holes of the flange (1).

6. The water sealing cover of the vertical multistage centrifugal pump according to claim 5, wherein an extension ring (9) is fixedly connected to one side, close to the flange (1), of the sealing plate (8), and the extension ring (9) is sleeved on the outer edge side wall of the sealing ring (3).