CN213451881U

CN213451881U - Rectangular side opening flap valve

Info

Publication number: CN213451881U
Application number: CN202022123332.2U
Authority: CN
Inventors: 程中; 刘郑; 吕泉兰; 周海云
Original assignee: Jiangsu Better Environmental Protection Machinery Equipment Co ltd
Current assignee: Jiangsu Better Environmental Protection Machinery Equipment Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-15
Anticipated expiration: 2030-09-24

Abstract

The utility model relates to a water treatment field provides a rectangle side is opened and is clapped door. A certain included angle is formed between the connecting pin shaft for rotating the door leaf and the doorsill, so that the gravity center of the door leaf faces the inner side of the door frame, and the door leaf can be closed automatically under the action of gravity when water inflow is stopped; waterproof rubber strips are arranged on the door frame and the pressing plates in the pipeline, so that the door gap and the gap between the door frame are fully sealed, and the backflow of water is avoided; through the cooperation of gag lever post and limiting plate to use rubber to cushion, reduce the damage that the door leaf produced when receiving water to strike, avoid excessively opening the rotatory hinge structure of damage simultaneously.

Description

Rectangular side opening flap valve

Technical Field

The utility model relates to a water treatment field, concretely relates to water treatment is with a rectangle side opening flap valve.

Background

The flap valve is a check valve which is arranged at the tail end of a drainage pipeline and has the function of preventing external water from flowing backwards, the flap valve is mainly composed of a valve seat, a valve plate, a water sealing ring and a hinge, the shape of the flap valve is divided into a round shape and a square shape, and the flap valve is made of various metal products in the prior art and is developed into various composite materials. The flap valve is widely used in industries such as water plants, sewage treatment plants, urban rain and sewage pump stations, water conservancy flood prevention and the like. The flap valve in the prior art is easy to be excessively opened when the water flow is large, damages are caused to the flap valve and the hinge structure, the service life of the flap valve is shortened, and the circulation efficiency of water flow is influenced. After water stops entering, the flap valve cannot be closed in time, the function of controlling water entering cannot be met, and even the phenomenon of backflow occurs. When the sealing performance between the flap valve and the door frame is insufficient, the problem of backflow is also caused, and frequent maintenance is needed.

Disclosure of Invention

For overcoming the problem that the flap valve leakproofness is not good among the prior art, can not in time close and strike the damage, the utility model aims to provide a reduce to strike damage, sealing performance good and can open flap valve at the rectangle side of self-closing accuse water under the dead weight effect.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a rectangular side-opening flap valve comprises a door frame, wherein a pipeline is installed on the front side of the door frame, a pair of oppositely-opened door leaves are installed on the rear side of the door frame, and the pipeline is closed when the door leaves are closed; each door leaf is all installed in the door frame through a pair of rotatory hinge structure, rotatory hinge structure includes connecting pin axle, fixed plate, a pair of turn-ups bearing, connecting screw and connection journal stirrup, the fixed plate is welded perpendicularly in the door frame, connecting pin axle concatenates the fixed plate perpendicularly, and the shaft shoulder of connecting pin axle bottom is spacing with the fixed plate and locks with the nut, a pair of turn-ups bearing concatenates in connecting pin axle, and the outside of each bearing overlaps respectively has the commentaries on classics cover, connecting screw fixed connection door frame and one of them commentaries on classics cover, connect journal stirrup fixed connection door leaf and another commentaries on classics cover, two connecting pin axles on the homonymy door frame are coaxial and are the contained angle with the vertical limit of door.

Furthermore, a water-stop rubber strip is arranged between the inner side edge of the door frame and the door frame.

Further, the outer side surface of the door leaf is an arc-shaped surface.

Further, vertical clamp plate is installed with the corresponding position of a pair of door leaf closed joint to the pipeline inboard, install the stagnant water rubber banding on the clamp plate towards the one side of door leaf, the back mounted of clamp plate has a pair of reinforcing plate, a pair of reinforcing plate is triangle-shaped welded connection with the clamp plate.

Furthermore, two sides of the door frame are respectively provided with a limit stop lever, and the end part of the limit stop lever is provided with a rubber block; and the edge of the outer side surface of the door leaf is provided with a limiting plate matched with the limiting stop lever.

After taking above technical scheme, the beneficial effects of the utility model are that:

1. a certain included angle is formed between the connecting pin shaft for rotating the door leaf and the doorsill, so that the gravity center of the door leaf faces the inner side of the door frame, and the door leaf can be closed automatically under the action of gravity when water inflow is stopped;

2. waterproof rubber strips are arranged on the door frame and the pressing plates in the pipeline, so that the door gap and the gap between the door frame are fully sealed, and the backflow of water is avoided;

3. through the cooperation of gag lever post and limiting plate to use rubber to cushion, reduce the damage that the door leaf produced when receiving water to strike, avoid excessively opening the rotatory hinge structure of damage simultaneously.

This technical scheme simple structure, accuse water and sealed effectual can improve the life of clapping the door, improves its reliability.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a partially enlarged front view.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in the figure, the rectangular side-opening flap valve consists of a door frame 1, a water inlet pipeline 2, a pair of oppositely-opened door leaves 3 and two groups of rotating hinge structures 4 for mounting the door leaves. The water inlet pipe 2 is installed at the front side of the door frame, and the pair of door leaves 3 opened in opposite directions is installed at the rear side of the door frame, and the water inlet pipe 2 is closed when the pair of door leaves 3 is closed.

The rotary hinge structure 4 is composed of a connecting pin 40, a fixing plate 41, a pair of flanged bearings 42, a connecting screw 43 and a connecting lug 44. The fixing plate 41 is vertically welded to the doorframe 1 for supporting the door leaf 3. The bottom of the connecting pin shaft 40 is provided with a shaft shoulder and a threaded section, the threaded section of the connecting pin penetrates through the fixing plate 41 to be limited with the fixing plate 41, and the threaded section is locked by a nut 45 to form fixed connection with the fixing plate 41. A pair of flanging bearings 42 are connected in series on the connecting pin shaft 40, the pair of flanging bearings are respectively and fixedly connected with the door frame 1 and the door leaf 3, and when the door leaf 3 is opened and closed, the pair of flanging bearings are in relative friction fit. In the technical scheme, the flanging bearing 42 and the door frame 1 are connected through the connecting screw 43, one end of the connecting screw 43 is fixedly connected with the door frame 1 through a pair of nuts, and the other end of the connecting screw 43 is fixed with the outer ring of one flanging bearing 42 or the rotating sleeve on the outer ring in a welding mode. The door leaf 3 is fixedly connected with the other flanging bearing through the connecting support lug 44, the connecting support lug 44 is perpendicular to the connecting pin shaft 40, one end of the connecting support lug 44 is fixedly welded with the outer ring of the corresponding flanging bearing or a rotating sleeve sleeved on the outer ring, and the other end of the connecting support lug 44 is fixedly welded with the door leaf 3. In order to enable the door leaf to be automatically closed under the action of self weight, two connecting pin shafts 40 on the door frame on the same side are coaxial and form an included angle of about 5 degrees with the vertical edge of the door frame, and the axis of each connecting pin shaft 40 is arranged in a manner of deviating from the outer side of the door frame.

The matching parts of the inner wall of the door leaf 3 and the door frame 1 are provided with water stop rubbers 5, and the water stop rubbers 5 can be arranged on the door frame 1 and also can be arranged on the door leaf 3. A vertical pressing plate 6 is arranged at the corresponding position of the closed joint of the pair of door leaves on the inner side of the pipeline 2, a water stop rubber strip 5 is arranged on one surface of the pressing plate 6 facing the door leaves, and when the door leaves are closed, the closed joint is sealed. In order to improve the strength of the platen, a pair of reinforcing plates 7 are attached to the back surface of the platen 6, and the pair of reinforcing plates 7 and the platen 6 are welded in a triangular shape. The lateral surface of door leaf 3 is the arcwall face, flows backward in water can increase with the area of contact of water, increases the pressure of water to the door leaf, reaches better sealed effect.

Two sides of the door frame 1 are respectively provided with one or more uniformly distributed limit stop rods 8, and the end parts of the limit stop rods 8 are provided with rubber blocks 9; and install the limiting plate 10 with spacing pin 8 complex at the edge of the lateral surface of door leaf 3, when the door leaf is opened 90, limiting plate 10 and the spacing of 9 contact of rubber piece prevent excessively to open and do effective buffering to the impact of intaking, extension life.

Door frame and inlet channel are the rectangle among this technical scheme, and this scheme is applicable to circular inlet channel equally.

Claims

1. A rectangular side-opening flap valve comprises a door frame, wherein a pipeline is installed on the front side of the door frame, a pair of oppositely-opened door leaves are installed on the rear side of the door frame, and the pipeline is closed when the pair of door leaves are closed; each door leaf is installed in the door frame through a pair of rotary hinge structures, and the rotary hinge structures are characterized by comprising a connecting pin shaft, a fixing plate, a pair of flanging bearings, a connecting screw rod and a connecting support lug, wherein the fixing plate is vertically welded to the door frame, the connecting pin shaft is vertically connected with the fixing plate in series, a shaft shoulder at the bottom of the connecting pin shaft is limited by the fixing plate and locked by a nut, the pair of flanging bearings are connected in series with the connecting pin shaft, the outer side of each bearing is respectively sleeved with a rotating sleeve, the connecting screw rod is fixedly connected with the door frame and one of the rotating sleeves, the connecting support lug is fixedly connected with the door leaf and the other rotating sleeve, and the two connecting pin shafts on the door frame are coaxial and form.

2. A rectangular side opening flap door according to claim 1, wherein a water-stop rubber strip is installed between the inner edge of the door frame and the door frame.

3. The rectangular side-opening flap valve as claimed in claim 1, wherein a vertical pressing plate is installed at a position corresponding to a closed joint of a pair of door leaves on the inner side of the pipeline, a water-stopping rubber strip is installed on one surface of the pressing plate facing the door leaves, a pair of reinforcing plates are installed on the back surface of the pressing plate, and the pair of reinforcing plates and the pressing plate are in triangular welding connection.

4. The rectangular side opening flap door according to any one of claims 1 to 3, wherein the outer side surface of the door leaf is an arc-shaped surface.

5. The rectangular side-opening flap valve according to claim 1, wherein two sides of the door frame are respectively provided with a limit stop lever, and the end part of the limit stop lever is provided with a rubber block; and the edge of the outer side surface of the door leaf is provided with a limiting plate matched with the limiting stop lever.