CN209943597U

CN209943597U - Check valve convenient and fast to construct and resistant to corrosion

Info

Publication number: CN209943597U
Application number: CN201920821827.7U
Authority: CN
Inventors: 康超
Original assignee: Xi'an Huanqi Pipe Manufacturing Co Ltd
Current assignee: Xi'an Huanqi Pipe Manufacturing Co Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-01-14
Anticipated expiration: 2029-06-03

Abstract

The utility model provides a convenient corrosion-resistant check valve of construction, which comprises a valve body, wherein a cavity which transversely penetrates is arranged inside the valve body, an opening at one side of the cavity is a water inlet, and an opening at the other side of the cavity is a water outlet; the fixing frame is arranged in the cavity and fixedly connected with the valve body, and is provided with a through cavity for water flow to pass through; the opening and closing piece is positioned between the water inlet and the fixing frame and is elastically connected with the fixing frame, a flange is also arranged at the water inlet, and the opening and closing piece is abutted against the flange when the valve body is closed; the loose leaf is located lead to the intracavity, loose leaf one end is swing joint end, swing joint end with mount swing joint, the loose leaf other end is the free end, the free end can wind under the water impact the swing joint end is rotatory. The utility model discloses can disturb the backward flow, reduce the backward flow and to the impact force of opening and close piece, slow down the vibrations of opening and close piece and valve body collision, improve the life of valve body.

Description

Check valve convenient and fast to construct and resistant to corrosion

Technical Field

The utility model relates to the technical field of valves, concretely relates to convenient corrosion-resistant check valve of construction.

Background

The check valve is a valve body which can only flow along the water inlet and can not allow the medium at the water outlet to flow back, and the elastic check valve is a check valve which utilizes an elastic component to close the valve body through elasticity to prevent the backflow when the fluid flows back.

In the process of closing the valve body, the opening and closing piece is simultaneously subjected to the elastic force of the elastic component and the impact force of water flow, so that the rebound speed of the opening and closing piece is high, and the valve body is severely collided when contacting the valve body, so that the valve body is vibrated and even damaged.

SUMMERY OF THE UTILITY MODEL

To the above technical problem, the utility model aims at providing a can slow down the convenient corrosion-resistant check valve of construction of vibrations.

In order to solve the above technical problem, the embodiment of the utility model provides an adopt following technical scheme to realize:

according to the utility model relates to a convenient corrosion-resistant check valve of construction, include:

the water-saving valve comprises a valve body, wherein a transversely-penetrating cavity is arranged in the valve body, one side of the cavity is provided with a water inlet, and the other side of the cavity is provided with a water outlet;

the valve body is fixedly connected with the valve body, and the valve body is provided with a cavity for water to flow through;

the water inlet is provided with a flange, and when the valve body is closed, the opening and closing piece is abutted against the flange, so that the water inlet cannot be communicated with the water outlet;

still include the loose leaf, the loose leaf is located lead to the intracavity, loose leaf one end is swing joint end, swing joint end with mount swing joint, the loose leaf other end is the free end, the free end can wind under the water impact swing joint end is rotatory.

Advantageously or exemplarily, the device further comprises a pulling element, one end of the pulling element is connected with the opening and closing element, and the other end of the pulling element is connected with the flap.

Advantageously or exemplarily, the number of said flaps is one or more.

Advantageously or exemplarily, the elastic connection between the shutter and the holder is achieved by means of a spring, which is in a compressed state when the shutter is pressed against the flange.

Beneficially or exemplarily, the valve body is made of a CPVC material.

The utility model discloses a various embodiments have following beneficial effect do:

when the opening and closing piece of the check valve is closed, the opening and closing piece is simultaneously subjected to elastic force and backflow impact force. The utility model discloses set up the flap on the mount, can disturb the backward flow of liquid through the flap, reduce the backward flow speed to reduce the backward flow and to the impact force of opening and close piece, and then slow down the speed when opening and close piece and valve body collide, reach the purpose that slows down vibrations, improved the life of valve body.

Drawings

The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.

Fig. 1 is a cross-sectional view of a valve body according to an embodiment of the present invention when closed;

fig. 2 is a sectional view of the valve body according to an embodiment of the present invention when opened;

fig. 3 is a view in the direction of a-a in fig. 1 according to an embodiment of the present invention;

reference numerals:

1-a valve body; 2-a water inlet; 3-water outlet; 4-a flange; 5-opening and closing piece; 6-a spring; 7-a fixing frame; 8-a traction member; 9-loose leaves; 10-through cavity.

Detailed Description

The invention will be further described with reference to the following examples in conjunction with the accompanying drawings.

Referring to fig. 1-3, fig. 1 illustrates the positional relationship of the various components when the valve body is closed; FIG. 2 is a view showing the positional relationship of the respective parts when the valve body is opened; fig. 3 shows the connection relationship between the fixing frame, the through cavity and the flap.

Referring to fig. 1-3, a transversely-penetrating cavity is arranged in a valve body 1, a water inlet 2 is arranged at one side opening of the cavity, and a water outlet 3 is arranged at the other side opening of the cavity. The fixing frame 7 is positioned in the cavity and fixedly connected with the valve body 1, the fixing frame 7 is provided with a through cavity 10 for water flow to pass through, the opening and closing piece 5 is positioned between the water inlet 2 and the fixing frame 7, the opening and closing piece 5 is elastically connected with the fixing frame 7, and the water inlet 2 is provided with a flange 4.

Still include loose leaf 9, loose leaf 9 is located and is led to in the chamber 10, and loose leaf 9 one end is swing joint end, swing joint end and mount 7 swing joint, and the loose leaf 9 other end is the free end, and the free end can be rotatory around the swing joint end under the rivers impact.

According to a preferred embodiment of the invention, the elastic connection between the shutter 5 and the holder 7 is achieved by means of a spring 6, the spring 6 being in a compressed state when the shutter 5 abuts against the flange 4. The elastic connection may be connected by other elastic means, such as compressible spring blocks, etc., as will be appreciated by those skilled in the art.

When no fluid is injected from the water inlet 2, as shown in fig. 1, the spring 6 is in a compressed state, the opening and closing member 5 is continuously pressed against the flange 4 by the elastic force of the spring 6, the valve body 1 is closed, and the water inlet 2 and the water outlet 3 cannot be communicated. The free end of the flap 9 now swings towards the water inlet 2.

When fluid enters from the inlet 2, the shutter 5 is pushed by the fluid and moves to the right, and the spring 6 is further compressed. The fluid passes in sequence from the space between the shutter 5 and the flange 4, through the through-cavity 10 of the holder 7, towards the outlet 3.

The free end of the flap 9 is pushed during the fluid flow to rotate around the movable connecting end of the flap 9 and finally swing towards the water outlet 3 as the fluid passes through the through cavity 10, as shown in fig. 2.

When fluid is not injected into the water inlet 2 any more, the pressure of the water inlet 2 is lower than the pressure of the water outlet 3, the fluid flows back to impact the opening and closing piece 5, at the moment, the opening and closing piece 5 moves leftwards under the action of the elastic force of the spring 6 and the backflow impact force of the fluid and finally abuts against the flange 4, the valve body 1 is closed, and the state shown in the figure 1 is recovered.

In the above-mentioned reflux process, the free end of the flap 9 is pushed by the fluid and rotates around its active connection end, and the free end of the flap 9 finally passes through the through cavity 10 with the fluid and swings towards the water inlet 2. The flap 9 can exert resistance to backflow, disturb backflow, and reduce the impact of backflow on the shutter 5.

Specifically, the process of the flap 9 for reducing the reflux impact force is as follows: when the reverse flow starts to strike the free end of the flap 9, the free end starts to swing, the reverse flow is subjected to the resistance of the flap 9, and the impact force of the reverse flow on the shutter 5 is reduced. As the flap 9 rotates towards the centre line of the holder 7, the greater the resistance, the greater the degree to which the backflow is disturbed and the less the backflow impact force on the shutter 5. When the flap 9 is perpendicular to the backflow direction, i.e., when the flap 9 is located at the center line of the fixing frame 7, the backflow impact force reaches the lowest value. Then, after the flap 9 crosses the center line of the fixing frame 7, the resistance of the backflow is gradually reduced until the flap 9 rotates to be parallel to the backflow direction, the resistance disappears, the impact force of the backflow on the opening and closing member 5 reaches the maximum, the opening and closing member 5 is tightly abutted against the flange 4, and the water inlet 2 and the water outlet 3 are separated, as shown in the state of fig. 1.

Because the resistance of the movable blade 9 to backflow is reduced, the backflow impact force on the opening and closing piece 5 is reduced, the speed of the opening and closing piece 5 is reduced when the opening and closing piece 5 is finally abutted against the flange 4, the collision between the opening and closing piece 5 and the flange 4 is reduced, the vibration of the valve body 1 is reduced, and the service life of the valve body is longer.

According to a preferred embodiment of the present invention, the device further comprises a pulling member 8, one end of the pulling member 8 is connected to the opening and closing member 5, and the other end of the pulling member 8 is connected to the flap 9.

As shown in fig. 1 to 3, when the flap 9 is parallel to the fluid flow direction, there is a dead point such that the fluid cannot push the flap 9 to rotate. The traction piece 8 is arranged, so that the movable blade 9 can be driven to rotate when the opening and closing piece 5 moves left and right, and the normal operation of the movable blade 9 can be ensured.

According to a preferred embodiment of the present invention, the number of the flaps 9 is one or more.

The plurality of flaps 9 can further increase the resistance to backflow and further reduce the impact of backflow on the shutter 5.

According to the utility model discloses a preferred embodiment, valve body 1 adopts the CPVC material preparation.

The check valve of CPVC material, the corrosion protection can be good, avoids the check valve to be corroded and damaged in long-term use.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The check valve convenient and fast to construct and resistant to corrosion is characterized by comprising a valve body (1), wherein a cavity which transversely penetrates through the valve body (1) is arranged in the valve body, a water inlet (2) is formed in an opening at one side of the cavity, and a water outlet (3) is formed in an opening at the other side of the cavity;

the valve body (1) is fixedly connected with the cavity, and the valve body is characterized by further comprising a fixing frame (7), wherein the fixing frame (7) is arranged in the cavity and is fixedly connected with the valve body (1), and the fixing frame (7) is provided with a through cavity (10) for water flow to pass through;

the water inlet (2) and the fixing frame (7) are elastically connected, the water inlet (2) is also provided with a flange (4), and when the valve body (1) is closed, the opening and closing piece (5) is abutted against the flange (4) to enable the water inlet (2) and the water outlet (3) not to be communicated;

still include loose leaf (9), loose leaf (9) are located lead to in the chamber (10), loose leaf (9) one end is swing joint end, swing joint end with mount (7) swing joint, the loose leaf (9) other end is the free end, the free end can wind under the water impact swing joint end is rotatory.

2. The check valve with convenient construction and corrosion resistance as claimed in claim 1, further comprising a pulling member (8), wherein one end of the pulling member (8) is connected with the opening and closing member (5), and the other end of the pulling member is connected with the flap (9).

3. The check valve for construction convenience and corrosion resistance according to claim 1, wherein the number of the flap (9) is one or more.

4. A construction-friendly corrosion-resistant non-return valve according to claim 1, characterized in that the resilient connection between the shutter (5) and the holder (7) is provided by a spring (6), the spring (6) being in a compressed state when the shutter (5) abuts the flange (4).

5. The check valve convenient to construct and resistant to corrosion according to claim 1, wherein the valve body (1) is made of CPVC.