Self-operated water blocking valve

Abstract

The utility model discloses a self-operated water blocking valve which comprises a valve body, a resistance assembly and a one-way sealing ball. A gas transmission channel with two large ends and a small middle part is arranged in the valve body, one end of the gas transmission channel is a gas inlet end, and the other end of the gas transmission channel is a gas outlet end; the resistance assembly comprises a first composite resistance piece and a second composite resistance piece, and the first composite resistance piece and the second composite resistance piece are alternately connected end to end in the direction opposite to the gas conveying direction; each of the first composite resistance piece and the second composite resistance piece is formed by reversely and fixedly connecting two bucket-shaped structures, one bucket-shaped structure is forwardly arranged at the upper part and is provided with a plurality of through holes, and the other bucket-shaped structure is reversely arranged at the lower part; the centers of the two bucket-shaped structures are mutually communicated; the one-way sealing ball is located between the resistance assembly and the air inlet end of the air conveying channel. The self-operated water blocking valve can effectively prevent water from entering gas equipment and a gas pipe network, economic losses are reduced, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a self-operated water-blocking valve. Background Art

[0002] Because the cold and hot water pipes and gas pipes of gas water heaters are similar and close to each other, it is easy to make mistakes during renovation due to the lack of pipeline markings, and connect the water pipe to the gas pipe. The current gas control valve lacks a water blocking device. After the mistaken connection, it is easy for water to enter the gas meter, riser or even the gas ground pipe, affecting the safety of residents' gas use.

[0003] The incidence of water ingress accidents in gas pipelines is relatively high, and rescue operations consume a lot of manpower and material resources. It has become a common accident for the safe operation of gas companies. Preventing water ingress accidents in pipelines caused by users' misconnection of water heaters is one of the important guarantees for ensuring safe gas supply.

[0004] The domestic solution to the problem of residents mistakenly connecting the tap water pipe to the reserved opening of the gas pipe is mainly to use a device composed of parts such as water-blocking balls and water-blocking rings. The country has also developed water-blocking devices for other pipelines, but for many reasons, they are difficult to apply to gas pipelines. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned problems and provide a self-operated water-blocking valve, which can effectively prevent water from entering the gas equipment and the gas pipeline network, reduce economic losses and eliminate safety hazards.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A self-operated water-blocking valve comprises a valve body, a resistance component and a one-way sealing ball arranged in the valve body;

[0008] The valve body contains a gas transmission channel with large ends and a small middle, one end of the gas transmission channel is a gas inlet end, and the other end of the gas transmission channel is a gas outlet end;

[0009] The resistance assembly includes a first composite resistance member and a second composite resistance member, each of which has at least one; along the opposite direction of gas delivery, the first composite resistance member and the second composite resistance member are alternately connected end to end; the first composite resistance member and the second composite resistance member are each composed of two bucket-shaped structures fixedly connected in reverse, one of which is arranged positively at the top and is provided with a plurality of through holes, and the other is arranged reversely at the bottom; the centers of the two bucket-shaped structures are interconnected; the top edge of the bucket-shaped structure located at the top of the first composite resistance member closest to the gas outlet is in contact with the inner wall of the gas transmission channel; the bottom edges of the bucket-shaped structures located at the bottom of all the first composite resistance members are sealed and in contact with the inner wall of the gas transmission channel; the top edge of the bucket-shaped structure located at the top of the second composite resistance member is in contact with the inner wall of the bucket-shaped structure located at the bottom of the first composite resistance member;

[0010] The one-way sealing ball is located between the resistance component and the air inlet end of the air delivery channel, and the diameter of the one-way sealing ball is larger than the size of the air inlet end of the air delivery channel.

[0011] The working principle of the above self-operated water-blocking valve is:

[0012] During normal ventilation, the gas enters from the air inlet end of the gas transmission channel, then moves upward, lifts the one-way sealing ball and moves it away from the air inlet end. Then the gas passes through the through hole of the upper bucket-shaped structure of the second composite resistance piece and enters between the upper bucket-shaped structure of the second composite resistance piece and the lower bucket-shaped structure of the first composite resistance piece, and then moves upward through the central channel of the two bucket-shaped structures of the first composite resistance piece, and finally moves to the air outlet end of the gas transmission channel to complete the gas supply.

[0013] If the user connects the tap water pipe to the reserved opening of the gas pipe and the tap water flows into the gas pipe in reverse, the first composite resistance member and the second composite resistance member inside the valve body will produce great resistance to the water flow, thereby slowing down the speed of the water flow, and the water flow will push the one-way sealing ball toward the air inlet end of the gas transmission channel, so that the one-way sealing ball blocks the air inlet end of the gas transmission channel, preventing the tap water from entering the gas main pipe.

[0014] In a preferred embodiment of the utility model, the resistance assembly further comprises an upper water-blocking member with a through hole, the upper water-blocking member is located between the first composite resistance member and the gas outlet of the gas transmission channel; the upper water-blocking member is a bucket-shaped structure, the opening of the bucket-shaped structure faces the gas outlet of the gas transmission channel, and the edge of the opening end of the bucket-shaped structure is in contact with the inner wall of the gas transmission channel. Through the above structure, the water flow can be initially blocked to reduce the speed of the water flow.

[0015] Furthermore, grooves are provided on the tops of the upper water-blocking member, the first composite resistance member and the second composite resistance member.

[0016] A preferred solution of the utility model is that a conical guide is provided between the resistance component and the air inlet end of the air transmission channel, the end of the guide close to the resistance component is a large opening end, the edge of the large opening end is sealed against the inner wall of the air transmission channel, and the end of the guide close to the air inlet end is a small opening end, the edge of the small opening end is sealed against the contraction inner wall of the air transmission channel. Through the above structure, the water flow can be gathered and directly guided to the one-way sealing ball, which is conducive to timely pushing the one-way sealing ball to block the air inlet end.

[0017] In a preferred embodiment of the present invention, the central channel of the resistance component gradually shrinks along the direction opposite to the gas delivery direction.

[0018] In a preferred embodiment of the utility model, the outer walls of the gas inlet end and the gas outlet end of the gas transmission channel are both provided with external threads, which are respectively connected to the gas pipeline and the cock valve.

[0019] A preferred solution of the utility model is that two of the first composite resistance member and two of the second composite resistance member are provided; along the opposite direction of gas delivery, the top edge of the upper bucket-shaped structure of the second first composite resistance member is in contact with the inner wall of the lower bucket-shaped structure of the first second composite resistance member.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The self-operated water-blocking valve of the utility model can generate great resistance to the water flow and slow down the speed of the water flow by providing the first composite resistance member and the second composite resistance member. Moreover, the water flow can push the one-way sealing ball toward the air inlet end of the gas transmission channel, so that the one-way sealing ball blocks the air inlet end of the gas transmission channel, thereby preventing tap water from entering the gas main pipe, reducing economic losses and eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the self-operated water-blocking valve of the utility model.

[0023] Figure 2 It is a cross-sectional view of the self-operated water-blocking valve of the utility model when water is entering. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0025] See also Figure 1-2The self-operated water-blocking valve of this embodiment includes a valve body 1 and a resistance component and a one-way sealing ball 2 arranged in the valve body 1; the valve body 1 includes a gas transmission channel 1-1 with large ends and a small middle, one end of the gas transmission channel 1-1 is an air inlet end 1-2, and the other end of the gas transmission channel 1-1 is an air outlet end 1-3; wherein the outer walls of the air inlet end 1-2 and the air outlet end 1-3 of the gas transmission channel 1-1 are both provided with external threads, which are respectively connected to the gas pipeline and the cock valve.

[0026] See also Figure 1-2 The resistance assembly includes a first composite resistance member 3 and a second composite resistance member 4, and each of the first composite resistance member 3 and the second composite resistance member 4 is provided with at least one; specifically, the first composite resistance member 3 and the second composite resistance member 4 of this embodiment are provided with two each. Along the opposite direction of gas delivery, the first composite resistance piece 3 and the second composite resistance piece 4 are alternately connected end to end; the first composite resistance piece 3 and the second composite resistance piece 4 are both composed of two bucket-shaped structures fixedly connected in reverse, one of which is positively arranged at the top and is provided with a plurality of through holes 5, and the other bucket-shaped structure is reversely arranged at the bottom; the centers of the two bucket-shaped structures are interconnected; along the opposite direction of gas delivery, the top edge of the bucket-shaped structure located at the top of the first first composite resistance piece 3 is in contact with the inner wall of the gas transmission channel 1-1; the top edge of the bucket-shaped structure located at the top of the second first composite resistance piece 3 is sealed in contact with the inner wall of the bucket-shaped structure located at the bottom of the first second composite resistance piece 4; the bottom edges of the bucket-shaped structures located at the bottom of all the first composite resistance pieces 3 are sealed in contact with the inner wall of the gas transmission channel 1-1; the top edge of the bucket-shaped structure located at the top of the second composite resistance piece 4 is in contact with the inner wall of the bucket-shaped structure located at the bottom of the first composite resistance piece 3.

[0027] Furthermore, along the direction opposite to the gas delivery, the central channel of the resistance component gradually narrows.

[0028] See also Figure 1-2 The one-way sealing ball 2 is located between the resistance component and the air inlet end 1-2 of the air supply channel 1-1, and the diameter of the one-way sealing ball 2 is larger than the size of the air inlet end 1-2 of the air supply channel 1-1.

[0029] See also Figure 1-2 The resistance assembly further includes an upper water-blocking member 6 with a through hole 5, and the upper water-blocking member 6 is located between the first composite resistance member 3 and the gas outlet 1-3 of the gas transmission channel 1-1; the upper water-blocking member 6 is a bucket-shaped structure, the opening of which faces the gas outlet 1-3 of the gas transmission channel 1-1, and the edge of the opening end of the bucket-shaped structure is in contact with the inner wall of the gas transmission channel 1-1. Through the above structure, the water flow can be initially blocked to reduce the speed of the water flow.

[0030] Furthermore, grooves 8 are provided on the tops of the upper water-blocking member 6 , the first composite resistance member 3 and the second composite resistance member 4 .

[0031] See also Figure 1-2 A conical guide 7 is provided between the resistance component and the air inlet end 1-2 of the air delivery channel 1-1. The end of the guide 7 close to the resistance component is a large opening end, and the edge of the large opening end is sealed against the inner wall of the air delivery channel 1-1. The end of the guide 7 close to the air inlet end 1-2 is a small opening end, and the edge of the small opening end is sealed against the contraction inner wall of the air delivery channel 1-1. Through the above structure, the water flow can be gathered and directly guided to the one-way sealing ball 2, which is conducive to timely pushing the one-way sealing ball 2 to block the air inlet end 1-2.

[0032] See also Figure 1-2 The working principle of the self-operated water-blocking valve of this embodiment is as follows:

[0033] During normal ventilation, the gas enters from the air inlet end 1-2 of the gas transmission channel 1-1, then moves upward, lifts the one-way sealing ball 2, and moves it away from the air inlet end 1-2. Then the gas passes through the through hole 5 of the upper bucket-shaped structure of the second composite resistance piece 4 and enters between the upper bucket-shaped structure of the second composite resistance piece 4 and the lower bucket-shaped structure of the first composite resistance piece 3, and then moves upward through the central channel of the two bucket-shaped structures of the first composite resistance piece 3, and finally moves to the air outlet end 1-3 of the gas transmission channel 1-1 to complete the gas supply.

[0034] If the user connects the tap water pipe to the reserved opening of the gas pipe and the tap water flows into the gas pipe in reverse, the first composite resistance member 3 and the second composite resistance member 4 inside the valve body 1 will produce great resistance to the water flow, thereby slowing down the speed of the water flow, and the water flow will push the one-way sealing ball 2 toward the air inlet end 1-2 of the gas transmission channel 1-1, so that the one-way sealing ball 2 blocks the air inlet end 1-2 of the gas transmission channel 1-1, preventing the tap water from entering the gas main pipe.

[0035] The above is a preferred implementation mode of the present invention, but the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A self-operated water-blocking valve, characterized in that: It includes a valve body, a resistance component and a one-way sealing ball arranged in the valve body; The valve body contains a gas transmission channel with large ends and a small middle, one end of the gas transmission channel is a gas inlet end, and the other end of the gas transmission channel is a gas outlet end; The resistance assembly includes a first composite resistance member and a second composite resistance member, each of which has at least one; along the opposite direction of gas delivery, the first composite resistance member and the second composite resistance member are alternately connected end to end; the first composite resistance member and the second composite resistance member are each composed of two bucket-shaped structures fixedly connected in reverse, one of which is arranged positively at the top and is provided with a plurality of through holes, and the other is arranged reversely at the bottom; the centers of the two bucket-shaped structures are interconnected; the top edge of the bucket-shaped structure located at the top of the first composite resistance member closest to the gas outlet is in contact with the inner wall of the gas transmission channel; the bottom edges of the bucket-shaped structures located at the bottom of all the first composite resistance members are sealed and in contact with the inner wall of the gas transmission channel; the top edge of the bucket-shaped structure located at the top of the second composite resistance member is in contact with the inner wall of the bucket-shaped structure located at the bottom of the first composite resistance member; The one-way sealing ball is located between the resistance component and the air inlet end of the air delivery channel, and the diameter of the one-way sealing ball is larger than the size of the air inlet end of the air delivery channel.

2. The self-operated water-blocking valve according to claim 1, characterized in that: There are two of each of the first composite resistance piece and the second composite resistance piece; along the opposite direction of gas delivery, the top edge of the upper bucket-shaped structure of the second first composite resistance piece is in contact with the inner wall of the lower bucket-shaped structure of the first second composite resistance piece.

3. The self-operated water-blocking valve according to claim 1, characterized in that: The resistance assembly also includes an upper water-blocking component with a through hole, which is located between the first composite resistance component and the air outlet end of the air transmission channel; the upper water-blocking component is a bucket-shaped structure, the opening of which faces the air outlet end of the air transmission channel, and the edge of the opening end of the bucket-shaped structure is in contact with the inner wall of the air transmission channel.

4. The self-operated water-blocking valve according to claim 3, characterized in that: The tops of the upper water-blocking member, the first composite resistance member and the second composite resistance member are all provided with grooves.

5. The self-operated water-blocking valve according to claim 1, characterized in that: A conical guide is provided between the resistance component and the air inlet end of the air supply channel, the end of the guide close to the resistance component is a large opening end, the edge of the large opening end is sealed against the inner wall of the air supply channel, and the end of the guide close to the air inlet end is a small opening end, the edge of the small opening end is sealed against the contracted inner wall of the air supply channel.

6. The self-operated water-blocking valve according to claim 1, characterized in that: Along the direction opposite to the gas delivery, the central channel of the resistance component gradually narrows.

7. The self-operated water-blocking valve according to claim 1, characterized in that: The outer walls of the gas inlet end and the gas outlet end of the gas transmission channel are both provided with external threads, which are connected to the gas pipeline and the cock valve respectively.

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