CN213298920U

CN213298920U - Swing type ball-shaped check valve

Info

Publication number: CN213298920U
Application number: CN202021956249.7U
Authority: CN
Inventors: 唐晓武
Original assignee: Roland Automatic Control Valve Shanghai Co ltd
Current assignee: Roland Automatic Control Valve Shanghai Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-28
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a swing formula ball-type check valve, include: the rotary valve comprises a valve body, an overhaul valve cover fixed on the valve body and a rotary valve clack rotatably connected in the valve body, wherein an overhaul port is formed in one surface of the valve body, the overhaul valve cover is clamped on the overhaul port, a rotary frame is fixedly connected to the inner wall of one side of the overhaul port, a rotary hole is formed in the rotary frame, and the rotary valve clack is inserted in the rotary hole; the valve body is internally provided with a water inlet at one end and a water outlet at the other end, the rotary valve clack is positioned at the position of the water inlet and is abutted against the inner wall of the water inlet, the concave surface of the rotary valve clack is close to the water outlet, the position of the valve body close to the rotary valve clack is a spherical cavity, one side edge of the spherical cavity is abutted against the bottom end of the rotary valve clack, and the inner wall of the spherical cavity and the bottom end of the rotary valve clack form an. According to the utility model discloses, simple structure is practical, and sealing performance is good for this check valve can use in the more place of granule impurity.

Description

Swing type ball-shaped check valve

Technical Field

The utility model relates to a technical field of check valve, in particular to swing formula ball-type check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved.

But present check valve when sewage or the local use that impurity is more, make easily to block between valve clack and the valve body in the check valve for the valve clack can not normally work, and check valve just can't normally work this moment, and general check valve has long impurity accumulation in the live time moreover, will make to block between valve clack and the valve body and can not normally work.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the prior art, the utility model aims at providing a swing formula ball-type check valve, simple structure is practical, and sealing performance is good for this check valve can use in the more place of granule impurity. In order to realize the above objects and other advantages in accordance with the present invention, there is provided a swing type ball check valve, comprising:

the rotary valve comprises a valve body, an overhaul valve cover fixed on the valve body and a rotary valve clack rotatably connected in the valve body, wherein an overhaul port is formed in one surface of the valve body, the overhaul valve cover is clamped on the overhaul port, a rotary frame is fixedly connected to the inner wall of one side of the overhaul port, a rotary hole is formed in the rotary frame, and the rotary valve clack is inserted in the rotary hole;

be equipped with one end in the valve body and be the water inlet, the other end is the delivery port, the rotary valve clack is located water inlet position department and inconsistent with the inner wall of water inlet, and the protrusion face of rotary valve clack is close to the water inlet, and the concave surface of rotary valve clack is close to the delivery port, and the valve body is close to rotary valve clack department and is a ball-type cavity, a side of ball-type cavity is inconsistent with the bottom of rotary valve clack, and the inner wall of ball-type cavity and rotary valve clack bottom form.

Preferably, the rotary valve clack comprises a valve clack sphere, one end of the valve clack sphere is an arc-shaped end, the other end of the valve clack sphere is a contact plane end, one side face of the valve clack sphere is an irregular concave face, and one side face, opposite to the irregular concave face, of the valve clack sphere is a spherical face.

Preferably, the plane end of the valve clack sphere is in contact with the inner wall of the valve body, the bottom end of the arc-shaped end is in contact with the inner wall of the valve body to form a contact surface, and the plane end and the arc-shaped end are in contact with the inner wall of the valve body to enable the water inlet to form a sealed area so as to prevent water flow from flowing backwards.

Preferably, one end of the valve clack sphere, which is far away from the arc-shaped end, is integrally connected with a rotating handle, the rotating handle is integrally connected with a rotating shaft, and the rotating shaft is inserted in the rotating frame.

Compared with the prior art, the utility model, its beneficial effect is: through setting up a ball-type cavity in the valve body, make the lateral wall and the rotating valve clack bottom of this ball-type cavity inconsistent, the impurity that has in the aquatic of the water inlet inflow and the exit backward flow of valve body all saves in this ball-type cavity, so that the rotating valve clack can normally work, the condition that can not take place to block, and when impurity accumulation was too much in this ball-type cavity, the accessible was opened and is examined and repaired the valve gap, clear up impurity in this ball-type cavity, need not take off the valve body and examine and repair, can be used for the more place of impurity, also improve the life of this valve body greatly.

Drawings

FIG. 1 is a half sectional view of a swing ball check valve according to the present invention;

figure 2 is a half-sectional view of the rotating valve flap of a swing ball check valve according to the present invention.

In the figure: 10. a valve body; 20. overhauling the valve cover; 30. a rotating frame; 40. a rotating valve clack; 11. a spherical cavity; 12. a water inlet; 13. a water outlet; 41. a valve clack sphere; 42. a circular arc end; 43. an impurity accommodating chamber; 45. an irregular concave surface; 46. a spherical surface; 47. a planar end; 48. a contact surface; 49. a rotation handle; 410. a rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a swing ball check valve includes: the check valve comprises a valve body 10, an inspection valve cover 20 fixed on the valve body 10 and a rotary valve clack 40 rotatably connected in the valve body 10, wherein an inspection opening is formed in one surface of the valve body 10, the inspection valve cover 20 is connected to the inspection opening in a clamping manner, a rotary frame 30 is fixedly connected to the inner wall of one side of the inspection opening, a rotary hole is formed in the rotary frame 30, the rotary valve clack 40 is inserted in the rotary hole, when the impurities in the valve body 10 are excessively accumulated, the inspection valve cover 20 can be opened to conveniently clean or maintain the impurities in the valve body 10, the check valve is not required to be taken down for inspection, a water inlet 12 is formed in one end of the valve body 10, a water outlet 13 is formed in the other end of the valve body, the rotary valve clack 40 is located at the position of the water inlet 12 and is abutted to the inner wall of the water inlet 12, the convex surface of the rotary valve, and the valve body 10 is a spherical cavity 11 near the rotary valve flap 40, one side of the spherical cavity 11 is contacted with the bottom end of the rotary valve flap 40, the inner wall of the spherical cavity 11 and the bottom end of the rotary valve flap 40 form an impurity containing cavity 43, when water enters from the water inlet 12 of the valve body 10, the rotating valve flap 40 is rotated and opened under the action of water flow, so that the water flow smoothly flows out from the water outlet 13, but when the water flow flows back, under the action of the backflow water flow, the rotating valve clack 40 rotates towards the water inlet 12, so that the rotating valve clack 40 is abutted against the inner wall of the water inlet 12, so that the water inlet 12 is a closed region, at this time, the water flow can not flow out from the water inlet 12, and the rivers of water inlet 12 department and the produced impurity of the backward flow rivers of delivery port 13 department all save in impurity holds the chamber 43 for rotary valve clack 40 can normally work, can not take place the condition of blocking.

Further, the rotating valve flap 40 includes a valve flap sphere 41, one end of the valve flap sphere 41 is an arc end 42, the other end is an abutting plane end 47, one side surface of the valve flap sphere 41 is an irregular concave surface 45, and the side surface of the valve flap sphere 41 opposite to the irregular concave surface 45 is a spherical surface 46.

Furthermore, the plane end 47 of the valve clack sphere 41 is abutted against the inner wall of the valve body 10, the bottom end of the arc-shaped end 42 is abutted against the inner wall of the valve body 10 to form an abutting surface 48, and the plane end 47 and the arc-shaped end 42 are both abutted against the inner wall of the valve body 10 to form a sealed region for the water inlet, so as to prevent water flow from flowing backwards.

Further, a rotating handle 49 is integrally connected to one end of the valve flap ball 41 away from the circular arc end 42, a rotating shaft 410 is integrally connected to the rotating handle 49, and the rotating shaft 410 is inserted into the rotating frame 30.

The working principle is as follows: when rivers normally intake from the water inlet 12 of valve body 10, rotatory valve clack 40 is rotatory opening in the effect of rivers this moment, make smooth the flowing out from delivery port 13 of rivers, but when rivers backward flow, under the effect of the rivers of backward flow, rotatory valve clack 40 rotates to water inlet 12 direction, so that rotatory valve clack 40 and water inlet 12 inner wall are inconsistent, make water inlet 12 be a confined interval, rivers can not flow from water inlet 12 this moment, and the rivers of water inlet 12 department and the produced impurity of the backward flow rivers of delivery port 13 department all save in impurity holds chamber 43, make rotatory valve clack 40 can normally work, after impurity accumulation to certain extent, through opening maintenance valve gap 20, can hold impurity in the chamber 43 with impurity and clear up.

The number of devices and the scale of the processes described herein are intended to simplify the description of the present invention, and applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application suitable for this invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. A swing ball check valve, comprising:

the valve comprises a valve body (10), an inspection valve cover (20) fixed on the valve body (10) and a rotary valve clack (40) rotatably connected in the valve body (10), wherein an inspection opening is formed in one surface of the valve body (10), the inspection valve cover (20) is clamped on the inspection opening, a rotary frame (30) is fixedly connected to the inner wall of one side of the inspection opening, a rotary hole is formed in the rotary frame (30), and the rotary valve clack (40) is inserted in the rotary hole;

be equipped with one end in valve body (10) and be water inlet (12), the other end is delivery port (13), revolving valve clack (40) are located water inlet (12) position department and inconsistent with the inner wall of water inlet (12), and the protrusion face of revolving valve clack (40) is close to water inlet (12), and the concave surface of revolving valve clack (40) is close to delivery port (13), and valve body (10) are close to revolving valve clack (40) department and are a ball-type cavity (11), a side of ball-type cavity (11) is inconsistent with the bottom of revolving valve clack (40), and the inner wall of ball-type cavity (11) and revolving valve clack (40) bottom form an impurity and hold chamber (43).

2. The swing ball-type check valve according to claim 1, wherein the rotary valve flap (40) comprises a valve flap sphere (41), one end of the valve flap sphere (41) is a circular arc-shaped end (42), the other end is an abutting plane end (47), one side surface of the valve flap sphere (41) is an irregular concave surface (45), and the side surface of the valve flap sphere (41) opposite to the irregular concave surface (45) is a ball-type surface (46).

3. The swing type ball check valve according to claim 2, wherein the flat end (47) of the valve clack ball body (41) abuts against the inner wall of the valve body (10), the bottom end of the circular arc end (42) abuts against the inner wall of the valve body (10) to form an abutting surface (48), and the flat end (47) and the circular arc end (42) both abut against the inner wall of the valve body (10) to form a sealed region at the water inlet to prevent water from flowing backwards.

4. The swing ball type check valve according to claim 2, wherein a rotation handle (49) is integrally connected to an end of the valve flap ball (41) away from the circular arc shaped end (42), a rotation shaft (410) is integrally connected to the rotation handle (49), and the rotation shaft (410) is inserted into the rotation frame (30).