CN217206843U

CN217206843U - Backflow hole plug

Info

Publication number: CN217206843U
Application number: CN202220045369.4U
Authority: CN
Inventors: 卢威兴; 王师; 毛宁来; 袁流茂; 李如佩; 熊永红
Original assignee: Zhejiang Shimge Pump Co Ltd
Current assignee: Zhejiang Shimge Pump Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-08-16
Anticipated expiration: 2032-01-07

Abstract

The utility model relates to a backward flow stopple, the problem of the bolt collision production abnormal sound on the use and the pump body that solution prior art exists, the technical scheme of adoption: the plug comprises a plug body and is characterized in that the plug body comprises a columnar portion, a plurality of supporting portions and a rubber pad, the columnar portion, the supporting portions and the rubber pad are of an integral structure, the supporting portions are located on the outer wall of the columnar portion and are distributed at intervals in the circumferential direction, supporting end faces of the supporting portions and the lower end face of the columnar portion are located on the same plane, the supporting end faces of the supporting portions are in supporting fit with the rubber pad, and the outer diameter of the rubber pad is matched with the diameter of a circumscribed circle of the supporting portions. The method has the following effects: change backward flow hole stopper structure, add the rubber pad at a terminal surface of backward flow hole stopper, when being applied to the water pump, the rubber pad on the backward flow hole stopper avoids rigid collision to produce the abnormal sound with metalwork bolt cooperation, at to a great extent noise reduction, and the rubber pad is ingenious with the cock body cooperation of backward flow hole stopper simultaneously, and performance, life-span are strong, also make things convenient for the rubber pad to change.

Description

Backflow hole plug

Technical Field

The utility model relates to a backward flow hole stopper especially relates to a backward flow hole stopper that reduces abnormal sound in the use.

Background

Current backflow hole stopper is the working of plastics, and when being applied to the water pump, backflow hole stopper sets up in the backward flow hole of the pump body, and the both sides of backflow hole stopper respectively with the spring with spacing metalwork bolt cooperation of using, make backflow hole stopper move about in the backward flow hole, current backflow hole stopper has following problem:

1. at the moment when the water pump starts and stops working, the backflow hole plug collides with the metal piece bolt to generate abnormal sound;

2. the generated abnormal sound is related to the elasticity of the spring, the materials of the backflow hole plug and the plug pin are all hard materials, the elasticity of the spring is related to the self-suction capability, and therefore the purpose of reducing the abnormal sound cannot be achieved by reducing the elasticity of the spring and sacrificing the self-suction performance.

Disclosure of Invention

An object of the utility model is to solve the above-mentioned problem that prior art exists and provide a backward flow stopple, change backward flow stopple structure, add the rubber pad at a terminal surface of backward flow stopple, when being applied to the water pump, rubber pad and metalwork bolt cooperation on the backward flow stopple avoid rigid collision to produce the abnormal sound, at to a great extent noise reduction, the rubber pad is ingenious with the cock body cooperation of backward flow stopple simultaneously, performance, life-span are strong, also make things convenient for the rubber pad to change.

The above technical purpose of the present invention is mainly solved by the following technical solutions: the backflow hole plug comprises a plug body and is characterized in that the plug body comprises a cylindrical portion, a plurality of supporting portions and a rubber pad, the supporting portions are located on the outer wall of the cylindrical portion and distributed at intervals in the circumferential direction, supporting end faces of the supporting portions and one end face of the cylindrical portion are located on the same plane, supporting end faces 21 of the supporting portions are in supporting fit with the rubber pad, and the outer diameter of the rubber pad is matched with the diameter of a circumscribed circle of the supporting portions. Change backward flow hole stopper structure, add the rubber pad at a terminal surface of backward flow hole stopper, when being applied to the water pump, the rubber pad on the backward flow hole stopper avoids rigid collision to produce the abnormal sound with metalwork bolt cooperation, at to a great extent noise reduction, and the rubber pad is ingenious with the cock body cooperation of backward flow hole stopper simultaneously, and performance, life-span are strong, also make things convenient for the rubber pad to change.

As further perfection and supplement to above-mentioned technical scheme, the utility model discloses a following technical measure: the rubber pad is detachably matched with the bearing part. When the rubber pad is aged or damaged, can in time conveniently change, reduce the cost of changing whole backward flow stopple.

The cylindrical part is internally provided with an axial blind hole cavity, an opening of the blind hole cavity is positioned on the lower end face of the bearing part, the upper end face of the rubber pad is provided with an inserting and cutting part of an integrated structure, and the inserting and cutting part is inserted into the blind hole cavity.

Preferably, the cutting portion is in interference fit with the blind bore cavity.

The outer wall circumference of slotting portion evenly sets up a plurality of depressed parts at interval. The interval between the adjacent depressed part forms protruding muscle form, and protruding muscle and the inner wall cooperation in blind hole chamber make things convenient for the grafting, also is favorable to forming the interference fit volume of suitable intensity, also makes things convenient for the rubber pad to dismantle and assemble.

The slotting part is in a frustum shape with a small upper part and a large lower part, the concave part is arranged at the middle lower part of the slotting part, the longitudinal section of the concave part is triangular, and the upper end of the concave part and the outer wall of the slotting part form smooth transition. The frustum-shaped structure is also favorable for the rubber pad to be detached and assembled, and the arrangement of the concave part enables the whole of the slotting part to be conveniently inserted into the blind hole cavity and forms proper interference fit.

The slotting part is internally provided with a blind hole, and an opening of the blind hole is positioned at the top of the slotting part. The rubber pad adopts interference fit with the inner wall in blind hole chamber, guarantees the complex reliability, prevents that the rubber pad from droing, and the middle sky of rubber pad forms the blind hole simultaneously, makes the rubber pad be difficult to more and drops through the effect of atmospheric pressure.

Preferably, an upper portion of the columnar portion has a spherical shape.

The utility model discloses beneficial effect who has: change backward flow hole stopper structure, add the rubber pad at a terminal surface of backward flow hole stopper, when being applied to the water pump, the rubber pad on the backward flow hole stopper avoids rigid collision to produce the abnormal sound with metalwork bolt cooperation, at to a great extent noise reduction, and the rubber pad is ingenious with the cock body cooperation of backward flow hole stopper simultaneously, and performance, life-span are strong, also make things convenient for the rubber pad to change.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is a schematic structural view of the assembled state of the present invention.

Fig. 3 is a schematic diagram of an explosive structure according to the present invention.

Fig. 4 is a schematic view of the structure of fig. 3 from another view angle.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

The embodiment is as follows: as shown in fig. 1 to 4, a backflow hole plug comprises a plug body, and is characterized in that the plug body comprises a columnar portion 1, a plurality of supporting portions 2 and a rubber pad 3, the supporting portions 2 are located on the outer wall of the columnar portion 1 and distributed at intervals in the circumferential direction, the supporting portions 2 and the columnar portion 1 are of an integral structure, a supporting end face 21 (or called as a lower end face) of each supporting portion and a lower end face 11 of the columnar portion are located on the same plane, the supporting end face 21 of each supporting portion is supported and matched with the rubber pad 3, and the outer diameter of the rubber pad 3 is matched with the diameter of a circumscribed circle of each supporting portion. Change backward flow hole stopper structure, add the rubber pad at a terminal surface of backward flow hole stopper, when being applied to the water pump, the rubber pad on the backward flow hole stopper avoids rigid collision to produce the abnormal sound with metalwork bolt cooperation, at to a great extent noise reduction, and the rubber pad is ingenious with the cock body cooperation of backward flow hole stopper simultaneously, and performance, life-span are strong, also make things convenient for the rubber pad to change.

The suitable size is selected to the external diameter of rubber pad 3, and the abnormal sound that produces when can effectual reduction backward flow hole stopper kick-backs can make the water pump accomplish smoothly simultaneously from inhaling, avoids appearing following condition: when the size of the rubber pad is overlarge, the backflow hole is blocked, so that the self-absorption effect of the water pump is lost; the rubber pad can't make with the metalwork bolt complete contact when the size undersize, leads to the water pump to finish the backward flow stopple resilience when self-priming, and the portion 2 that supports takes place the striking with the metalwork bolt, and abnormal sound still exists.

In general, the column portion 1 and the receiving portion 2 are formed by injection molding of a plastic material in order to have a certain hardness and a suitable price. In order to make the bearing part 2 have proper strength, the bearing part 2 is L-shaped, and the foot part of the L-shape faces outwards to form a radiation shape.

Preferably, the rubber pad 3 is detachably matched with the supporting part 2. When the rubber pad is aged or damaged, the replacement can be timely and conveniently carried out, and the cost for replacing the whole backflow hole plug is reduced.

An axial blind hole cavity 12 is arranged in the columnar part 1, an opening of the blind hole cavity is positioned on the lower end face of the bearing part, an inserting and cutting part 31 of an integrated structure is arranged on the upper end face of the rubber gasket 3, and the inserting and cutting part 31 is inserted into the blind hole cavity 12.

Preferably, the undercut portion 31 is an interference fit with the blind bore cavity 12.

The outer wall of the slotting part 31 is provided with a plurality of concave parts 31-1 at even intervals along the circumferential direction. The interval between adjacent depressed parts forms the protruding muscle form, and protruding muscle 31-2 cooperates with the inner wall in blind hole chamber 12, conveniently pegs graft, also is favorable to forming the interference fit volume of suitable intensity, also makes things convenient for the rubber pad to dismantle and assemble.

The slotting part 31 is in a frustum shape with a small upper part and a large lower part, the concave part 31-1 is arranged at the middle lower part of the slotting part, the longitudinal section of the concave part 31-1 is triangular, and the upper end of the concave part and the outer wall of the slotting part form smooth transition. The slotting part 31 is of a frustum-shaped structure, so that the rubber pad 3 is convenient to disassemble and assemble, and the slotting part can be conveniently inserted into the blind hole cavity integrally due to the arrangement of the concave part, and a proper interference fit is formed.

A blind hole 31-3 is arranged in the slotting part, and the opening of the blind hole is positioned at the top of the slotting part. The rubber pad adopts interference fit with the inner wall in blind hole chamber, guarantees the complex reliability, prevents that the rubber pad from droing, and the middle sky of rubber pad forms the blind hole simultaneously, makes the rubber pad be difficult to more and drops through the effect of atmospheric pressure.

Preferably, the upper portion 13 of the columnar portion is spherical.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In the above embodiments, the present invention may be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The backflow hole plug comprises a plug body and is characterized in that the plug body comprises a columnar portion, a plurality of supporting portions and a rubber pad, the columnar portion, the supporting portions and the rubber pad are of an integrated structure, the supporting portions are located on the outer wall of the columnar portion and distributed at intervals in the circumferential direction, supporting end faces of the supporting portions and the lower end face of the columnar portion are located on the same plane, the supporting end faces of the supporting portions are in supporting fit with the rubber pad, and the outer diameter of the rubber pad is matched with the diameter of a circumscribed circle of the supporting portions.

2. The backflow hole plug as claimed in claim 1, wherein the rubber pad is detachably engaged with the receiving portion.

3. The return plug according to claim 1 or 2, wherein an axial blind hole cavity is provided in the cylindrical portion, an opening of the blind hole cavity is located on a lower end surface of the receiving portion, and an integrally formed insertion-cutting portion is provided on an upper end surface of the rubber gasket, and the insertion-cutting portion is inserted into the blind hole cavity.

4. The return hole plug as set forth in claim 3, wherein said undercut portion is an interference fit with said blind cavity.

5. The return hole plug as claimed in claim 4, wherein the outer wall of the cutting portion is provided with a plurality of recesses at regular intervals in the circumferential direction.

6. The backflow hole plug as claimed in claim 5, wherein the cutting portion has a truncated cone shape with a small upper portion and a large lower portion, the recess is disposed at a middle lower portion of the cutting portion, a longitudinal cross-section of the recess is triangular, and an upper end of the recess forms a smooth transition with an outer wall of the cutting portion.

7. The return plug of claim 3, wherein a blind hole is provided in said insert portion, an opening of said blind hole being located at a top portion of said insert portion.

8. The return plug of claim 6, wherein a blind hole is provided in the insert portion, the opening of the blind hole being located at the top of the insert portion.

9. The return orifice plug according to claim 8, wherein the upper portion of the columnar portion is spherical.