CN210318676U

CN210318676U - Rubber flap check valve

Info

Publication number: CN210318676U
Application number: CN201921258918.0U
Authority: CN
Inventors: 古玉珊; 裴霁虹; 张凌兵; 方荣根
Original assignee: Tongling Rong Jing Technology Co Ltd
Current assignee: Tongling Rong Jing Technology Co Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-04-14
Anticipated expiration: 2029-08-05

Abstract

The utility model relates to a check valve technical field provides a rubber lamella check valve, aims at solving present rubber lamella check valve and mainly realizes opening and close through the deflection deformation of valve clack to being different from round pin axle swing formula, rubber lamella deflection excessively often appears, rubber lamella fracture, cracked problem, include valve gap and valve body through two fixed round pin post demountable installation, the valve pocket that has a perfect understanding has been constituteed at the middle part of valve gap and valve body, and is equipped with the case that is the water droplet form in the valve pocket, be equipped with annular rubber valve clack between valve gap and the valve body, and the rubber valve clack is the integrated into one piece structure, one side that the valve pocket is close to the valve gap is the water inlet, and one side that the valve pocket is close to the valve body is the delivery port. The utility model discloses be particularly useful for the safe handling of rubber lamella check valve, have higher social use value and application prospect.

Description

Rubber flap check valve

Technical Field

The utility model relates to a check valve technical field, concretely relates to rubber lamella check valve.

Background

The existing rubber flap check valve is mainly a long valve body slope sealing structure, and is composed of a main valve body, a valve cover, a valve flap and other parts, and the inner design of the rubber flap check valve reaches the full flow area so as to reduce the head loss and easily allow sundries to pass through.

The valve clack is formed by wrapping a steel plate with reinforced nylon and then integrally encapsulating, rubber is hardened, and a protruding ring is arranged at the edge of the rubber to be used as a water sealing rubber ring to prevent water in the pipe from flowing backwards when the pressure is low. The nylon fiber is added at the joint of the valve clack and the valve body, so that an elastic reinforced part is formed between a valve clack steel plate and a steel bar, but the conventional rubber clack check valve is opened and closed mainly through the deflection deformation of the valve clack and is not equal to a pin shaft swing type, so that the conditions of excessive deflection of the rubber clack, cracking and breaking of the rubber clack frequently occur.

The patent with publication number CN201407396 discloses a rubber flap check valve, wherein a telescopic sleeve is arranged at the outlet end of the rubber flap check valve, one end of the telescopic sleeve is sleeved in the outlet of the rubber flap check valve and is matched with the outlet of the rubber flap check valve, so that the telescopic sleeve can slide back and forth along the inner cavity of the outlet of the rubber flap check valve, and a sealing ring is arranged between the telescopic sleeve and the outlet of the rubber flap check valve, so that the telescopic sleeve and the outlet of the rubber flap check valve are in liquid seal; the other end lateral surface rigid coupling of flexible cover has the flange, is equipped with the through-hole coaxial with rubber lamella check valve other end flange through-hole on the flange, is equipped with the screw rod in the through-hole of both ends flange, is equipped with limit nut on the relative medial surface screw rod of two flanges, and the device use cost is low, and it is little to take up an area of the space, but the device has the rubber lamella that often appears and deflects excessively, the condition of rubber lamella fracture, for this reason, we have provided a rubber lamella check valve.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a rubber lamella check valve, it is not enough to have overcome prior art, reasonable in design, compact structure aims at solving present rubber lamella check valve and mainly realizes opening and close through the flexure deformation of valve clack to be not equivalent to round pin axle swing formula, the rubber lamella is excessive in flexure often appears, rubber lamella fracture, cracked problem.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a rubber flap check valve comprises a valve cover and a valve body which are detachably mounted through two fixing pin columns, wherein a through valve cavity is formed by the middle parts of the valve cover and the valve body, a drop-shaped valve core is arranged in the valve cavity, an annular rubber valve flap is arranged between the valve cover and the valve body and is of an integrally formed structure, a water inlet is formed in one side, close to the valve cover, of the valve cavity, and a water outlet is formed in one side, close to the valve body, of the valve cavity;

the rubber valve clack includes installation department, valve clack portion and the laminating portion that sets gradually from the edge to the middle part, the installation department sets up the marginal mounted position at valve gap and valve body, valve clack portion sets up in the valve pocket, and valve clack portion is flexible marine alga column structure, laminating portion contradicts on the annular outer wall of case.

Preferably, one side of the valve flap part close to the water inlet is provided with a valve flap cavity protruding towards the water outlet.

Preferably, the middle part of the mounting part is provided with a pin shaft hole matched with the fixed pin column.

Preferably, the valve core comprises a core head part and a core tail part which are respectively arranged in the valve cover and the inner cavity of the valve body, a core shaft is arranged on the inner wall of the core head part along the medium transmission direction, and the other end of the core shaft penetrates through the side wall of the core tail part and is provided with an internal thread pin head in a threaded sleeve mode.

Preferably, the edge of the valve cover close to one side of the valve body is provided with a mounting groove matched with the mounting part.

Preferably, the fixed pin post is fixedly installed on the valve body, and one section of the fixed pin post, which is located outside the valve cover, is of a threaded structure, and a locking nut is sleeved on the threaded structure.

(III) advantageous effects

The embodiment of the utility model provides a rubber lamella check valve possesses following beneficial effect:

1. the utility model discloses a composite construction of valve gap, valve body, rubber valve clack and case, simple structure, installation convenient to use.

2. Through the integrated configuration of rubber valve clack and case, avoided the rubber lamella to deflect excessively, the condition of rubber lamella fracture, valve seal is reliable, and the life-span is long.

3. Through the annular structural design of the rubber valve clack, the full flow area type design has small head loss and is not easy to accumulate sundries.

4. The middle rubber pad in the traditional rubber flap check valve is omitted, the cost is saved, the use of the valve body is ensured, and the valve is simple and convenient to maintain.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the rubber valve flap of the present invention;

FIG. 3 is a schematic view of the medium downstream state of the present invention;

fig. 4 is a schematic view of the medium backflow state of the present invention.

In the figure: the valve comprises a valve cover 1, a valve body 2, a rubber valve clack 3, a valve clack part 31, an installation part 32, a pin shaft hole 33, a valve clack cavity 34, a joint part 35, a valve core 4, a core head part 41, a core shaft 42, a core tail part 43, an internal thread pin head 44, a water inlet 5, a water outlet 6 and a fixed pin post 7.

Detailed Description

The invention will be further described with reference to the following figures 1-4 and examples:

the utility model provides a rubber valve check valve, includes valve gap 1 and valve body 2 through two fixed round pin post 7 demountable installation, the valve pocket that has a perfect understanding has been constituteed at the middle part of valve gap 1 and valve body 2, and is equipped with the case 4 that is the drop form in the valve pocket, be equipped with annular rubber valve clack 3 between valve gap 1 and the valve body 2, and rubber valve clack 3 is the integrated into one piece structure, removes 3 wide-angle deflections of rubber valve clack from, one side that the valve pocket is close to valve gap 1 is water inlet 5, and one side that the valve pocket is close to valve body 2 is delivery port 6.

In this embodiment, as shown in fig. 1-2, the rubber valve flap 3 includes an installation portion 32, a valve flap portion 31, and an attachment portion 35, which are sequentially disposed from the edge to the middle, the installation portion 32 is disposed at the edge installation positions of the valve cover 1 and the valve body 2, the valve flap portion 31 is disposed in the valve cavity, the valve flap portion 31 is in a flexible seaweed-like structure, and the attachment portion 35 abuts against the annular outer wall of the valve core 4.

In this embodiment, as shown in fig. 1-2, a valve flap cavity 34 protruding toward the water outlet 6 is disposed on a side of the valve flap 31 close to the water inlet 5, so as to accumulate media, and push the rubber valve flap to expand outward to open in a forward flow state.

In this embodiment, as shown in fig. 2, a pin hole 33 matched with the fixing pin 7 is formed in the middle of the mounting portion 32, so that the fixing pin 7 can be conveniently inserted into the mounting portion 32 for fixing the rubber valve flap 3.

In this embodiment, as shown in fig. 1, the valve core 4 includes a core head 41 and a core tail 43 respectively installed in the inner cavities of the valve cover 1 and the valve body 2, the core shaft 42 is installed on the inner wall of the core head 41 along the medium transmission direction, the other end of the core shaft 42 penetrates through the side wall of the core tail 43 and is threadedly sleeved with an internal thread pin head 44, the core head 41 and the core tail 43 are combined to form the water-drop-shaped valve core 4, and the rubber valve flap 3 is effectively matched to stop the medium transmission, so as to ensure the medium transmission.

In this embodiment, as shown in fig. 1, the edge of the valve cover 1 near one side of the valve body 2 is provided with a mounting groove matched with the mounting portion 32, so that the mounting portion 32 of the rubber valve flap 3 can be conveniently placed, and the sealing of the valve cover 1 and the valve body 2 after mounting is ensured.

In this embodiment, as shown in fig. 1, fixed round pin post 7 fixed mounting is on valve body 2, and fixed round pin post 7 is located one section of valve gap 1 outside and is the helicitic texture, and the last cover of helicitic texture is equipped with lock nut, effectual convenient installation and the dismantlement of realization valve gap 1 and valve body 2.

According to the rubber flap check valve of the above embodiment of the present invention, as shown in fig. 3 and 4, when the medium normally flows, i.e. flows from the water inlet 5 to the water outlet 6, the medium pushes the rubber flap 3 to diffuse outward, and the medium smoothly completes the transmission; when the medium flows backwards, namely flows from the water outlet 6 to the water inlet 5, the medium is reversely pushed from the core tail part 43 of the drop-shaped valve core 4, the extrusion valve clack part 31 is retracted inwards, the attaching part 35 abuts against the annular side wall of the core tail part 43 to seal the valve body 2, and the medium is effectively prevented from flowing backwards.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A rubber flap check valve comprises a valve cover and a valve body which are detachably mounted through two fixing pin columns, and is characterized in that a through valve cavity is formed by the middle parts of the valve cover and the valve body, a drop-shaped valve core is arranged in the valve cavity, an annular rubber valve flap is arranged between the valve cover and the valve body, the rubber valve flap is of an integrally formed structure, a water inlet is formed in one side, close to the valve cover, of the valve cavity, and a water outlet is formed in one side, close to the valve body, of the valve cavity;

2. A rubber flap check valve as defined in claim 1 wherein: one side of the valve clack part close to the water inlet is provided with a valve clack cavity protruding towards the water outlet.

3. A rubber flap check valve as defined in claim 1 wherein: and a pin shaft hole matched with the fixed pin column is formed in the middle of the mounting part.

4. A rubber flap check valve as defined in claim 1 wherein: the valve core comprises a core head part and a core tail part which are respectively arranged in the valve cover and the inner cavity of the valve body, a core shaft is arranged on the inner wall of the core head part along the medium transmission direction, and the other end of the core shaft penetrates through the side wall of the core tail part and is sleeved with an internal thread pin head in a threaded manner.

5. A rubber flap check valve as defined in claim 1 wherein: the edge of the valve cover close to one side of the valve body is provided with a mounting groove matched with the mounting part.

6. A rubber flap check valve as defined in claim 1 wherein: the fixing pin column is fixedly installed on the valve body, one section, located outside the valve cover, of the fixing pin column is of a threaded structure, and a locking nut is sleeved on the threaded structure.