CN219673395U

CN219673395U - Composite rotary-opening rubber flap check valve

Info

Publication number: CN219673395U
Application number: CN202320516024.7U
Authority: CN
Inventors: 褚周生; 王金
Original assignee: Zhejiang Southern Fluid Technology Co ltd
Current assignee: Zhejiang Southern Fluid Technology Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-09-12
Anticipated expiration: 2033-03-16

Abstract

The utility model relates to the technical field of check valves, in particular to a compound swing type rubber flap check valve, which comprises a check valve body, wherein the top end of the check valve body is connected with a valve cover body through two groups of bolt clamping, two sides of the check valve body are integrally connected with connecting flanges, and a valve flap body is arranged in the connecting flanges. According to the utility model, the valve clack body and the cyclone bin are arranged, water flows pass through the connecting flange, the valve clack body in the connecting flange is met, the valve is opened by the flowing pressure of medium at the front end, one end of the valve clack body is pushed by the water flow to rotate and lift, when the impact force of the water flow is reduced and disappears, the valve clack body blocks the medium from flowing backwards by self weight, wherein the sealing performance can be improved by the nylon rubber coating layer and the ethylene propylene diene monomer rubber ring, the backflow is avoided, the cyclone bin can carry impurities in water to the cyclone bin when the water flow speed is slowed down, the impurities can be gathered in the cyclone bin even if a small amount of backflow occurs, and the impurities can not return to the water pump, so that the pump body is prevented from being damaged.

Description

Composite rotary-opening rubber flap check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to a compound swing type rubber flap check valve.

Background

The check valve is a valve with a circular valve clack as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure. Belongs to automatic valves, which are also called check valves, one-way valves, reflux valves or isolation valves. The movement modes of the valve clack are divided into a lifting type and a swing type. The lifting check valve is similar to a stop valve in structure, and only lacks a valve rod for driving the valve clack. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). When the inlet pressure is greater than the sum of the valve flap weight and its flow resistance, the valve is opened. Otherwise, the valve is closed when the medium flows backwards. The swing check valve has a valve clack which is inclined and can rotate around the shaft, and the working principle is similar to that of the lifting check valve. Check valves are commonly used as bottom valves for pumping devices to prevent backflow of water. The check valve and the stop valve are combined for use, so that the safety isolation function can be realized.

However, the existing check valve is applied to pipelines of a drainage system, a fire protection system and an air conditioning heating and ventilation system, is usually installed at the water outlet end of a water pump, but is difficult to prevent backflow of a pipeline medium, poor in sealing performance, easy to cause water hammer phenomenon when the pipeline flow is large, damage to the water pump is caused, impurities in the pipeline are easy to accumulate in a valve body, and cleaning is inconvenient, so that a composite swing type rubber flap check valve is required to be designed to solve the problems.

Disclosure of Invention

The existing check valve is applied to pipelines of a drainage system, a fire-fighting system and an air-conditioning heating and ventilation system, is usually arranged at the water outlet end of a water pump, but is difficult to prevent backflow of pipeline media, poor in sealing performance, easy to cause water hammer phenomenon when the pipeline flow is large, damage to the water pump is caused, impurities in the pipeline are easy to accumulate in a valve body, and the problem of inconvenient cleaning is solved.

The utility model provides a composite swing type rubber flap check valve, which comprises a check valve body, wherein the top end of the check valve body is connected with a valve cover body through two groups of bolts in a clamping manner, two sides of the check valve body are integrally connected with connecting flanges, the valve flap body is arranged in the connecting flanges, the valve flap body comprises a carbon steel core, a nylon rubber coating layer, a rotating bearing, a stainless steel supporting shaft and an ethylene propylene diene monomer rubber ring, the outer side of the stainless steel supporting shaft is provided with the rotating bearing, the outer side of the rotating bearing is provided with the carbon steel core, and the outer side of the carbon steel core is wrapped with the nylon rubber coating layer.

Preferably, the rotating bearing is made of high-quality tin bronze.

Preferably, a rotational flow bin is arranged in the check valve body, a threaded plug is arranged at one end of the rotational flow bin in a threaded mode, and a sealing ring is arranged on one side of the rotational flow bin.

Preferably, one side of the threaded plug is provided with an anti-slip ball.

Preferably, the inside of flange has seted up indent formula seal groove, the mounting hole has been seted up to flange's outside annular.

Preferably, the surface of the check valve body is engraved with a model and a label head.

Preferably, the sealing surface of the valve clack body adopts a round boss design, and the sealing surface of the carbon steel core is provided with an ethylene propylene diene monomer rubber ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. through being provided with valve clack body and whirl storehouse, rivers are from the inside process of flange, meet inside valve clack body, lean on front end medium flow pressure to open the valve, rivers promote the rotatory lifting of valve clack body one end, reduce disappearance when rivers impulsive force, the valve clack body leans on self weight to block the medium refluence, wherein nylon rubber coating layer and EPDM rubber circle can both increase the leakproofness, avoid the backward flow, the whirl storehouse can carry whirl storehouse department with aquatic impurity when the water velocity slows down, even appear a small amount of backward flow also can gather in the whirl storehouse, also can not return to in the water pump, avoid the pump body to damage.

2. Through being provided with anti-skidding ball, screw thread plug and sealing washer, open the screw thread plug for inside ponding of whirl storehouse and impurity can discharge, and anti-skidding ball convenient to use person takes out the screw thread plug, and the sealing washer avoids here to leak.

3. Through being provided with flange, mounting hole and indent formula seal groove, the mounting hole is convenient for pass through fastening bolt with the pipeline and connects, and indent formula seal groove increases the leakproofness of being connected with the pipeline.

4. Through being provided with the label head, the arrow direction of rivers has been marked to the label head, and the label head can make the correct installation check valve body of user, avoids the installation mistake, leads to the check valve body unusable.

Drawings

FIG. 1 is a schematic elevational cross-sectional view of the structure of the present utility model;

FIG. 2 is a schematic elevational view of the structure of the present utility model;

FIG. 3 is a schematic diagram of a front view of a part of an enlarged structure of a valve clack body of the present utility model;

fig. 4 is a schematic side view of the connecting flange of the present utility model.

In the figure: 110. a check valve body; 120. a connecting flange; 121. a mounting hole; 122. a concave seal groove; 130. a valve cover body; 140. a tag head; 150. a cyclone bin; 151. an anti-slip ball; 152. a threaded plug; 153. a seal ring; 160. a valve flap body; 161. a carbon steel core; 162. nylon glue wrapping layer; 163. a rotating bearing; 164. a stainless steel support shaft; 165. ethylene propylene diene monomer rubber rings.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, an embodiment of the present utility model is provided: the utility model provides a compound formula swing rubber lamella check valve, including check valve body 110, the top of check valve body 110 is connected with valve gap 130 through two sets of bolt block, the both sides integration of check valve body 110 is connected with flange 120, flange 120's inside is provided with valve clack body 160, valve clack body 160 includes carbon steel core 161, rubber coating 162, rolling bearing 163, stainless steel back shaft 164 and EPDM rubber ring 165, stainless steel back shaft 164's outside is provided with rolling bearing 163, rolling bearing 163's outside is provided with carbon steel core 161, the outside parcel of carbon steel core 161 has nylon rubber coating 162, rivers are passed through from flange 120 inside at first, meet inside valve clack body 160, open the valve by front end medium flow pressure, rivers promote valve clack body 160 one end rotatory lifting, when rivers impact force reduces to disappear, valve clack body 160 is by self weight blocking medium, wherein nylon rubber coating 162 and EPDM rubber ring 165 all can increase the leakproofness, this product has the response speed fast, it is little, sealing performance is good, corrosion and characteristics such as long-life, this product adopts compound formula structure, valve clack 160 adopts, the flow resistance, the advantage of light weight is closed by itself, the weight is strong, the advantage such as has, and the self weight is closed, the weight is strong, has, and has the advantage of the self weight is removed, is closed, and is self-weight. This product optimizes inner structure, makes the design more reasonable, and the operating mode is better, adds fiber nylon cloth in the middle of the nylon covering layer 162, and is easier crooked, and life-span is longer, and stainless steel back shaft 164 adopts stainless steel to support, prevents rust spot card and hinders.

Further, the rotating bearing 163 is made of high-quality tin bronze, and the high-quality tin bronze is used as a bearing, so that the sliding lubricity is improved, and the abrasion of the valve clack body 160 in the running process can be effectively reduced.

Further, the sealing surface of the valve clack body 160 adopts a round boss design, the sealing surface of the carbon steel core 161 is provided with an ethylene propylene diene monomer rubber ring 165, the sealing performance is excellent, the service life is long, the valve clack tail of the valve clack body 160 adopts an anti-collision design of the ethylene propylene diene monomer rubber ring 165, and the silencing effect is obvious.

Example two

In the composite swing type rubber flap check valve according to the present utility model, compared with the first embodiment, referring to fig. 4, the check valve body 110 has a surface engraved with a model and a label head 140; the tag head 140 indicates the arrow direction of the water flow, and the tag head 140 enables a user to correctly install the check valve body 110, avoiding the incorrect installation, resulting in the non-use of the check valve body 110.

Further, an inner concave sealing groove 122 is formed in the connecting flange 120, and a mounting hole 121 is formed in the outer side of the connecting flange 120 in an annular manner; the mounting hole 121 facilitates connection with the pipe by fastening bolts, and the concave sealing groove 122 increases the tightness of connection with the pipe.

Example III

Compared with the first embodiment, referring to fig. 2, the composite swing rubber flap check valve provided by the utility model has a cyclone bin 150 arranged in the check valve body 110, a threaded plug 152 is arranged at one end of the cyclone bin 150 in a threaded manner, and a sealing ring 153 is arranged at one side of the cyclone bin 150; the cyclone bin 150 can carry the aquatic impurity to the cyclone bin 150 department when the water velocity slows down, even appear a small amount backward flow also can gather in the cyclone bin 150, can not return to the water pump, open screw thread plug 152 for the inside ponding of cyclone bin 150 and impurity can discharge, and anti-skidding ball 151 is convenient for the user takes out screw thread plug 152, and sealing washer 153 avoids here to leak.

Further, an anti-slip ball 151 is disposed on one side of the screw plug 152, so that the screw plug 152 can be conveniently rotated to take out or mount the screw plug 152.

The working principle of the utility model is as follows: firstly, water flow passes through the connecting flange 120 to encounter the valve clack body 160 inside, the valve is opened by the flowing pressure of the front medium, the water flow pushes one end of the valve clack body 160 to rotate and lift, when the impact force of the water flow is reduced and disappears, the valve clack body 160 blocks the medium backflow by self weight, wherein the nylon rubber coating layer 162 and the ethylene propylene diene monomer rubber ring 165 can increase the tightness and avoid backflow. The valve cover 130 is opened, so that the check valve body 110 is maintained, and the operation is simple.

The cyclone bin 150 can carry the aquatic impurity to the cyclone bin 150 department when the water velocity slows down, even appear a small amount backward flow also can gather in the cyclone bin 150, can not return to the water pump, open screw thread plug 152 for the inside ponding of cyclone bin 150 and impurity can discharge, and anti-skidding ball 151 is convenient for the user takes out screw thread plug 152, and sealing washer 153 avoids here to leak.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a compound swing rubber lamella check valve, its characterized in that, including check valve body (110), the top of check valve body (110) is connected with valve gap body (130) through two sets of bolt block, the both sides integration of check valve body (110) is connected with flange (120), the inside of flange (120) is provided with valve clack body (160), valve clack body (160) include carbon steel core (161), nylon covering layer (162), pivot bearing (163), stainless steel back shaft (164) and ethylene propylene diene monomer rubber circle (165), the outside of stainless steel back shaft (164) is provided with pivot bearing (163), the outside of pivot bearing (163) is provided with carbon steel core (161), the outside parcel of carbon steel core (161) has nylon covering layer (162).

2. The composite swing rubber flap check valve according to claim 1 wherein the rotation bearing (163) is made of high quality tin bronze.

3. The composite swing rubber flap check valve according to claim 1, wherein a cyclone bin (150) is arranged in the check valve body (110), a threaded plug (152) is mounted at one end of the cyclone bin (150) in a threaded manner, and a sealing ring (153) is arranged at one side of the cyclone bin (150).

4. A composite swing rubber flap check valve according to claim 3 characterised in that one side of the screw thread plug (152) is provided with a non-slip ball (151).

5. The composite swing rubber flap check valve according to claim 1, wherein an inner concave seal groove (122) is formed in the connecting flange (120), and a mounting hole (121) is formed in an outer annular shape of the connecting flange (120).

6. The composite swing rubber flap check valve according to claim 1, wherein the check valve body (110) is provided with a model and a label head (140) surface inscription.

7. The composite swing rubber flap check valve according to claim 1, wherein the sealing surface of the valve flap body (160) is designed by adopting a circular boss, and the sealing surface of the carbon steel core (161) is provided with an ethylene propylene diene monomer rubber ring (165).