CN214662280U - Lift check valve capable of slowly lifting and slowly closing - Google Patents

Abstract

The utility model discloses a lift check valve capable of slowly rising and slowly closing. A lifting check valve capable of slowly ascending and slowly closing comprises a valve body, a valve seat, an O-shaped sealing ring, a valve cover, a valve clack arranged on the valve seat and a valve clack slowly ascending and slowly closing device; the lifting ring is installed on the upper top surface of the valve cover in a threaded manner; the valve clack slowly-lifting and slowly-closing device comprises an elastic corrugated pipe, a guide rod, a short sleeve, a buffer spring and a buffer spring guide sleeve; in the initial state, the elastic corrugated pipe fixedly installed on the center of the top surface of the valve clack by using the installation seat and the buffer spring installed on the guide rod in the buffer spring guide sleeve are in a free telescopic state, and the valve clack is attached to the valve seat. The utility model discloses a slow rising of over-and-under type check valve clack is slowly closed, has prevented that the valve clack from rising or the falling speed is too fast to cause the collision to the valve body wall, has prevented to cause the water hammer inside the valve body, has improved life.

Description

Lift check valve capable of slowly lifting and slowly closing

Technical Field

The utility model belongs to a check valve, especially belong to a lift check valve that can slowly rise slowly and close.

Background

The existing lift check valve is opened and closed up and down by the lifting motion of a valve clack. At the in-process of upwards with the downstream, current lift check valve often can cause the valve clack rising speed too fast when the fluid power in the valve body is too big, and the valve clack rising speed too fast can cause the collision to the valve body wall, causes the water hammer inside the valve body, influences the life of valve body. How to realize that lift check valve clack rises slowly and closes slowly, prevent that the valve clack from rising or the falling speed is too fast to cause the collision to the valve body wall, prevent to cause the water hammer inside the valve body, improve lift check valve life is the problem that needs to solve.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provided is a lift check valve capable of slowly rising and slowly closing. Use this can slowly rise slowly lift check valve who closes can realize that lift check valve clack slowly rises slowly and closes, prevents that the valve clack from rising or the falling speed is too fast to cause the collision to the valve body wall, prevents to cause the water hammer inside the valve body, improves lift check valve life.

The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides a can slowly rise lift check valve of slowly closing, includes valve body, disk seat, O type sealing washer, valve gap, characterized by: the valve flap is arranged on the valve seat and slowly rises to the slow closing device; the lifting ring is installed on the upper top surface of the valve cover in a threaded manner;

the valve clack slowly-lifting and slowly-closing device comprises an elastic corrugated pipe, a guide rod, a short sleeve, a buffer spring and a buffer spring guide sleeve, wherein the short sleeve is fixedly installed on the inner wall of the port at the upper end part of the elastic corrugated pipe; the center of the top surface of the valve clack corresponding to the guide sleeve of the buffer spring is vertically arranged on the lower bottom surface of the valve cover, the guide rod is vertically arranged on the center of the lower bottom surface of the valve cover enclosed by the upper top surface of the guide sleeve of the buffer spring, the guide rod vertically arranged on the center of the lower bottom surface of the valve cover is inserted into the short sleeve fixedly arranged on the inner wall of the port at the upper end part of the elastic corrugated pipe, the buffer spring is arranged on the guide rod in the guide sleeve of the buffer spring, the upper top surface of the buffer spring arranged on the guide rod in the guide sleeve of the buffer spring is propped against the lower bottom surface of the valve cover enclosed by the upper top surface of the guide sleeve of the buffer spring, and the lower bottom surface is propped against the upper end part port of the elastic corrugated pipe and the annular top surface formed by the upper end port of the short sleeve fixedly arranged on the inner wall of the port at the upper end part of the elastic corrugated pipe; the axis of an elastic corrugated pipe fixedly arranged on the center of the top surface of the valve clack by using a mounting seat, the axis of a buffer spring guide sleeve vertically arranged on the lower bottom surface of the valve cover corresponding to the center of the top surface of the valve clack, the axis of a guide rod vertically arranged on the center of the lower bottom surface of the valve cover enclosed by the upper top surface of the buffer spring guide sleeve, and the axis of a buffer spring arranged on the guide rod in the buffer spring guide sleeve are a straight line; in the initial state, the elastic corrugated pipe fixedly installed on the center of the top surface of the valve clack by using the installation seat and the buffer spring installed on the guide rod in the buffer spring guide sleeve are in a free telescopic state, and the valve clack is attached to the valve seat.

The utility model discloses a working process is: the fluid circulation of the lifting check valve body capable of slowly lifting and slowly closing of the utility model can compress the elastic corrugated pipe under the upward acting force of the fluid, and the valve clack is separated from the valve seat and moves upwards; when the fluid in the valve body is too much and the fluid force is too large, the elastic corrugated pipe is compressed, the buffer spring can be supported and compressed under the top surface of a ring formed by the port at the upper end part of the elastic corrugated pipe and the port at the upper end part of the short sleeve, part of the length of the lower end part of the guide rod is gradually nested into the short sleeve fixedly arranged on the inner wall of the port at the upper end part of the elastic telescopic corrugated pipe, and the fluid circulating through the valve clack in the circulating valve body is increased; when the fluid flowing through the valve body of the lift check valve capable of slowly rising and slowly closing of the utility model is reduced, the fluid acting force is reduced, the buffer spring is gradually restored to the initial position, and the guide rod is nested into the length of the middle-lower end part in the short sleeve fixedly installed on the inner wall of the port at the upper end part of the elastic telescopic corrugated pipe to be stretched out again; when the fluid flowing through the valve body is less and less, the elastic corrugated pipe is compressed less and less until the initial state is recovered, and the valve clack is attached to the valve seat.

The utility model has the advantages that: because the utility model is provided with the valve body, the valve seat, the O-shaped sealing ring and the valve cover, the valve flap is arranged on the valve seat, and the valve flap slowly rises and slowly closes the device; the lifting ring is installed on the upper top surface of the valve cover in a threaded manner; the valve clack slowly-lifting and slowly-closing device comprises an elastic corrugated pipe, a guide rod, a short sleeve, a buffer spring and a buffer spring guide sleeve; in the initial state, the elastic corrugated pipe fixedly installed on the center of the top surface of the valve clack by using the installation seat and the buffer spring installed on the guide rod in the buffer spring guide sleeve are in a free telescopic state, and the valve clack is attached to the valve seat. The utility model discloses a slow rising of over-and-under type check valve clack is slowly closed, has prevented that the valve clack from rising or the falling speed is too fast to cause the collision to the valve body wall, has prevented to cause the water hammer inside the valve body, has improved the utility model discloses can slowly rise the life of slowly closed over-and-under type check valve.

Drawings

The present invention will be further explained with reference to the drawings and examples;

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an enlarged view of a portion of fig. 1 according to the present invention;

in the drawings: 1. the valve comprises a valve body, 2 valve seats, 3O-shaped sealing rings, 4 valve covers, 5 valve clacks, 6 lifting rings, 7 elastic corrugated pipes, 8 guide rods, 9 short sleeves, 10 buffer springs and 11 buffer spring guide sleeves.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

Example 1

As shown in fig. 1 and 2, the lift check valve capable of slowly rising and slowly closing comprises a valve body 1, a valve seat 2, an O-shaped sealing ring 3 and a valve cover 4, and is characterized in that: the valve also comprises a valve clack 5 arranged on the valve seat 2, and a valve clack slowly-lifting and slowly-closing device; the lifting ring 6 is installed on the upper top surface of the valve cover 4 in a threaded manner;

the valve clack slowly-lifting and slowly-closing device comprises an elastic corrugated pipe 7, a guide rod 8, a short sleeve 9, a buffer spring 10 and a buffer spring guide sleeve 11, wherein the short sleeve 9 is fixedly installed on the inner wall of the port at the upper end part of the elastic corrugated pipe 7, the short sleeve 9 fixedly installed in the port at the upper top surface of the elastic corrugated pipe 7 is matched with the guide rod 8, and the lower end part of the elastic corrugated pipe 7 is fixedly installed at the central position of the top surface of the valve clack 5 by using an installation seat; a buffer spring guide sleeve 11 is vertically arranged on the lower bottom surface of the valve cover 4 corresponding to the center position of the top surface of the valve clack 5, a guide rod 8 is vertically arranged on the center position of the lower bottom surface of the valve cover 4 enclosed by the upper top surface of the buffer spring guide sleeve 11, the guide rod 8 vertically arranged on the center position of the lower bottom surface of the valve cover 4 is inserted into a short sleeve 9 fixedly arranged on the inner wall of the port at the upper end part of the elastic corrugated pipe 7, a buffer spring 10 is arranged on the guide rod 8 in the buffer spring guide sleeve 11, the upper top surface of the buffer spring 10 arranged on the guide rod 8 in the buffer spring guide sleeve 11 is abutted against the lower bottom surface of the valve cover 4 enclosed by the upper top surface of the buffer spring guide sleeve 11, and the lower bottom surface is abutted against the port at the upper end part of the elastic corrugated pipe 7 and the circular ring top surface formed by the ports at the upper end parts of the short sleeve 9 fixedly arranged on the inner walls of the port at the upper end part of the elastic corrugated pipe 7; the axis of an elastic corrugated pipe 7 fixedly installed at the center of the top surface of the valve clack 5 by using an installation seat, the axis of a buffer spring guide sleeve 11 vertically installed on the lower bottom surface of the valve cover 4 corresponding to the center of the top surface of the valve clack 5, the axis of a guide rod 8 vertically installed at the center of the lower bottom surface of the valve cover 4 enclosed by the upper top surface of the buffer spring guide sleeve 11, and the axis of a buffer spring 10 installed on the guide rod 8 in the buffer spring guide sleeve 11 are straight lines; in the initial state, the elastic corrugated pipe 7 fixedly installed on the center position of the top surface of the valve clack 5 by using the installation seat and the buffer spring 10 installed on the guide rod 8 in the buffer spring guide sleeve 11 are in a free telescopic state, and the valve clack 5 is attached to the valve seat 2.

From the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention, and the present invention is within the protection scope of the present invention. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.

Claims (1)

1. The utility model provides a can slowly rise lift check valve of slowly closing, includes valve body, disk seat, O type sealing washer, valve gap, characterized by: the valve flap is arranged on the valve seat and slowly rises to the slow closing device; the lifting ring is installed on the upper top surface of the valve cover in a threaded manner;

the valve clack slowly-lifting and slowly-closing device comprises an elastic corrugated pipe, a guide rod, a short sleeve, a buffer spring and a buffer spring guide sleeve, wherein the short sleeve is fixedly installed on the inner wall of the port at the upper end part of the elastic corrugated pipe; the center of the top surface of the valve clack corresponding to the guide sleeve of the buffer spring is vertically arranged on the lower bottom surface of the valve cover, the guide rod is vertically arranged on the center of the lower bottom surface of the valve cover enclosed by the upper top surface of the guide sleeve of the buffer spring, the guide rod vertically arranged on the center of the lower bottom surface of the valve cover is inserted into the short sleeve fixedly arranged on the inner wall of the port at the upper end part of the elastic corrugated pipe, the buffer spring is arranged on the guide rod in the guide sleeve of the buffer spring, the upper top surface of the buffer spring arranged on the guide rod in the guide sleeve of the buffer spring is propped against the lower bottom surface of the valve cover enclosed by the upper top surface of the guide sleeve of the buffer spring, and the lower bottom surface is propped against the upper end part port of the elastic corrugated pipe and the annular top surface formed by the upper end port of the short sleeve fixedly arranged on the inner wall of the port at the upper end part of the elastic corrugated pipe; the axis of an elastic corrugated pipe fixedly arranged on the center of the top surface of the valve clack by using a mounting seat, the axis of a buffer spring guide sleeve vertically arranged on the lower bottom surface of the valve cover corresponding to the center of the top surface of the valve clack, the axis of a guide rod vertically arranged on the center of the lower bottom surface of the valve cover enclosed by the upper top surface of the buffer spring guide sleeve, and the axis of a buffer spring arranged on the guide rod in the buffer spring guide sleeve are a straight line; in the initial state, the elastic corrugated pipe fixedly installed on the center of the top surface of the valve clack by using the installation seat and the buffer spring installed on the guide rod in the buffer spring guide sleeve are in a free telescopic state, and the valve clack is attached to the valve seat.

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