Drain valve with non-return function

Abstract

The utility model provides a drain valve with a non-return function. The drain valve with the non-return function comprises a drain valve shell, a valve element and a valve element, the non-return shell is fixedly connected to one end of the drain valve shell, a penetrating opening is formed in the position, close to one end, of the top of the non-return shell, a sealing cover is installed at the position, close to one end, of the top of the non-return shell, a sealing plug is fixedly connected to the bottom of the sealing cover, and a connector is installed at the bottom of the sealing plug through a spring. A non-return plate is fixedly connected to the bottom of the connector, a supporting ring is installed at the position, close to one end, of the interior of the non-return shell, and a second butt joint pipe is fixedly connected to the other end of the non-return shell. According to the drain valve with the non-return function, the non-return function of the drain valve is added through the structure, and the drain valve is installed on a drain pipeline of a clear water tank so that sewage can be prevented from flowing back to pollute the clear water tank in the sewage treatment process.

Description

TECHNICAL FIELD

[0001] The utility model relates to drainage valve technical field especially, it is a kind of drainage valve with non-return function. BACKGROUND

[0002] Drainage valve is a kind of indispensable water industry product, mainly applied in city, building, enterprise water supply and drainage engineering, industrial and domestic sewage treatment and water conservancy engineering and other fields, and the main application is mainly all kinds of medium and low pressure valves.

[0003] The main body of drainage valve is composed of valve, valve body and connecting pipe, usually made of cast iron, stainless steel or aluminum alloy material, and the key component of valve is composed of valve stem and valve piece, and the valve body is the housing of valve, and drainage valve has more use scenarios, such as sewage treatment process needs clean water to assist sewage treatment, and drainage valve needs to be installed on the conveying pipeline between clean water tank and sewage treatment tank.

[0004] General drainage valve lacks non-return function, and some drainage valves used in sewage pipeline containing residues are prone to backflow in use, thereby causing sewage to pollute clean water in clean water tank.

[0005] Therefore, it is necessary to provide a drainage valve with non-return function to solve the above technical problems. CONTENT OF UTILITY MODEL

[0006] The utility model provides a drainage valve with non-return function, solve the problem that general drainage valve lacks non-return function and is prone to backflow in some special liquid conveying process, thereby causing water in clean water tank to be polluted.

[0007] To solve the above technical problems, the drainage valve with non-return function provided by the utility model comprises a drainage valve shell;

[0008] A non-return shell is fixedly connected to one end of the drainage valve shell, a through hole is formed in the top of the non-return shell near one end, a sealing cover is installed on the top of the non-return shell near one end, a sealing plug is fixedly connected to the bottom of the sealing cover, a connecting head is installed on the bottom of the sealing plug through a spring, a non-return plate is fixedly connected to the bottom of the connecting head, a supporting ring is installed in the non-return shell near one end, and a second connecting pipe is fixedly connected to the other end of the non-return shell.

[0009] An installation block is fixedly connected to the outer surface of the drainage valve shell at the top, a rotating shaft is installed on the top of the installation block through a sealing assembly, a rotating disc is installed on the outer surface of the rotating shaft near the middle, an adjusting disc is installed on the top end of the rotating shaft, a valve body is installed on the bottom end of the rotating shaft, and a first connecting pipe is fixedly connected to the other end of the drainage valve shell.

[0010] The one side of the support ring and the check plate contact is provided with a rubber ring, which can increase the sealing performance, the shape of the spring is shown in the figure, the check plate can be opened by force and reset without force, and the support ring contacts, the check plate is circular, the valve body is located in the inside of the drain valve shell, and the structure in the inside of the drain valve shell can realize opening and closing, so that the drain valve is communicated or closed.

[0011] Preferably, the outer surfaces of the first and second connecting pipes are provided with mounting grooves, and the mounting grooves are provided with sealing rings;

[0012] The sealing performance of the pipeline and the drain valve can be improved.

[0013] Preferably, the sealing assembly comprises a sealing pipe, and the bottom of the inner wall of the sealing pipe is provided with a second support ring, and the top end of the second support ring is fixedly connected with a second sealing ring;

[0014] The second support ring improves the sealing performance of the connection between the rotating shaft and the sealing pipe.

[0015] Preferably, the top end of the sealing pipe is provided with a top cover, the bottom of the top cover is provided with a first support ring, and the bottom of the first support ring is provided with a first sealing ring;

[0016] The outer surface of the first support ring contacts the inner surface of the sealing pipe.

[0017] Preferably, the top of the check shell is provided with a mounting port near the other end, and the top of the check shell is provided with a mounting cover with a soft plug near the other end;

[0018] The soft plug is hollow in the middle, so that the filter disc can be conveniently mounted.

[0019] Preferably, the bottom of the mounting cover is fixedly connected with a filter disc, one end of the filter disc is provided with an opening, and a plurality of filter holes are formed in one side of the opening;

[0020] The diameter of the filter hole can be determined according to requirements.

[0021] Compared with the related art, the drain valve with the check function has the following beneficial effects:

[0022] The utility model provides a drainage valve with check function, in order to increase the check function of drainage valve and avoid sewage backflow into the clean water tank in the sewage treatment process, install one check shell in the one side of drainage valve casing, and the top of check shell is equipped with a through -going hole, which is convenient for the dismounting of check plate, only need to install the connector with check plate below the sealing plug through the spring before installation, make check plate open to one side after being stressed, can receive the spring's resilience reset when not stressed, make check plate and support ring contact, can play the effect of check, only need to install check plate in the inside of check shell through the through -going hole, and the through -going hole is sealed through sealing plug and sealing cover, through the structure, increase the check function of drainage valve, install it on the drainage pipeline of clean water tank, can avoid sewage backflow pollution clean water tank in the sewage treatment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The first embodiment of the drainage valve with check function provided by the utility model is a structural schematic view;

[0024] Figure 2 The structural schematic view of the valve body provided by the utility model is shown in the figure;

[0025] Figure 3 The structural schematic view of the baffle provided by the utility model is shown in the figure;

[0026] Figure 4 The structural schematic view of the spring provided by the utility model is shown in the figure;

[0027] Figure 5 The structural schematic view of the first sealing ring provided by the utility model is shown in the figure;

[0028] Figure 6 The second embodiment of the drainage valve with check function provided by the utility model is a structural schematic view;

[0029] Figure 7 The structural schematic view of the filter disc provided by the utility model is shown in the figure.

[0030] The reference signs in the figure are as follows: 1, drainage valve casing, 2, mounting block, 3, first butt joint pipe, 4, mounting groove, 5, sealing ring, 6, adjusting disc, 7, sealing assembly, 701, sealing pipe, 702, first sealing ring, 703, first support ring, 704, top cover, 705, second support ring, 706, second sealing ring, 8, sealing cover, 9, check shell, 10, second butt joint pipe, 11, valve body, 12, rotating shaft, 13, support ring, 14, connector, 15, sealing plug, 16, through -going hole, 17, spring, 18, check plate, 19, mounting cover, 20, opening, 21, filter hole, 22, filter disc, 23, mounting port, 24, soft plug, 25, rotating disc. DETAILED DESCRIPTION

[0031] The utility model is further described below in combination with the drawings and embodiments.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 5 Among them, Figure 1 It is the structural schematic diagram of the first embodiment of the drainage valve with non-return function provided by the utility model; Figure 2 It is the structural schematic diagram of the valve body provided by the utility model; Figure 3 It is the structural schematic diagram of the baffle provided by the utility model; Figure 4 It is the structural schematic diagram of the spring provided by the utility model; Figure 5 It is the structural schematic diagram of the first sealing ring provided by the utility model. The drainage valve with non-return function comprises a drainage valve shell 1;

[0033] A non-return shell 9 is fixedly connected at one end of the drainage valve shell 1, a through hole 16 is formed at the top of the non-return shell 9 close to one end, a sealing cover 8 is installed at the top of the non-return shell 9 close to one end, a sealing plug 15 is fixedly connected at the bottom of the sealing cover 8, a connecting head 14 is installed at the bottom of the sealing plug 15 through a spring 17, a non-return plate 18 is fixedly connected at the bottom of the connecting head 14, a supporting ring 13 is installed at the inside of the non-return shell 9 close to one end, and a second connecting pipe 10 is fixedly connected at the other end of the non-return shell 9;

[0034] An installation block 2 is fixedly connected at the top of the outer surface of the drainage valve shell 1, a rotating shaft 12 is installed at the top of the installation block 2 through a sealing assembly 7, a rotating disc 25 is installed at the outer surface of the rotating shaft 12 close to the middle, an adjusting disc 6 is installed at the top end of the rotating shaft 12, a valve body 11 is installed at the bottom end of the rotating shaft 12, and a first connecting pipe 3 is fixedly connected at the other end of the drainage valve shell 1;

[0035] The surface, where the supporting ring 13 and the non-return plate 18 contact, is provided with a rubber ring, so that the sealing property can be improved, and the shape of the spring 17 is shown in Figure 4 The non-return plate 18 can be opened under force and reset without force through the spring 17, and the supporting ring 13 is in contact with the non-return plate 18, the non-return plate 18 is circular, the valve body 11 is located in the inside of the drainage valve shell 1, the structure in the inside of the drainage valve shell 1 can realize opening and closing, so that the drainage valve can be opened or closed, and the drainage valve shell 1 is made of rust-proof material.

[0036] The outer surfaces of the first connecting pipe 3 and the second connecting pipe 10 are provided with installation grooves 4, and the installation grooves 4 are provided with sealing rings 5;

[0037] The sealing ring 5 is made of rubber or silicon, which can increase the sealing performance of the pipe and the drain valve.

[0038] The sealing assembly 7 comprises a sealing pipe 701, the bottom of the inner wall of the sealing pipe 701 is provided with a second supporting ring 705, the top end of the second supporting ring 705 is fixedly connected with a second sealing ring 706;

[0039] The second sealing ring 706 is below the rotating disc 25, and the second supporting ring 705 increases the sealing performance of the connection between the rotating shaft 12 and the sealing pipe 701.

[0040] The top end of the sealing pipe 701 is provided with a top cover 704, the bottom of the top cover 704 is provided with a first supporting ring 703, and the bottom of the first supporting ring 703 is provided with a first sealing ring 702.

[0041] The first sealing ring 702 is above the rotating disc 25, and the outer surface of the first supporting ring 703 is in contact with the inner surface of the sealing pipe 701.

[0042] The working principle of the drain valve with the anti-reverse function is as follows:

[0043] One anti-reverse shell 9 is arranged on one side of the drain valve shell 1, a through hole 16 is arranged on the top of the anti-reverse shell 9, the through hole 16 is convenient for dismounting the anti-reverse plate 18, and before installation, only needs to arrange the connecting head 14 with the anti-reverse plate 18 below the sealing plug 15 through the spring 17, so that the anti-reverse plate 18 is opened to one side after being stressed, and is reset by the rebound force of the spring 17 when not stressed, so that the anti-reverse plate 18 is in contact with the supporting ring 13, and the anti-reverse effect is achieved, then only needs to arrange the anti-reverse plate 18 in the anti-reverse shell 9 through the through hole 16, and seals the through hole 16 through the sealing plug 15 and the sealing cover 8, in actual use, when the drain valve is opened, the clean water flows into the pipe to be input through the valve body 11, in the process, the anti-reverse plate 18 is opened under the pressure, and after the drain valve is closed, the anti-reverse plate 18 is reset by the rebound force of the spring 17, so that the anti-reverse shell 9 is sealed, and the backflow of sewage is avoided.

[0044] Compared with the related art, the drain valve with the anti-reverse function has the following beneficial effects:

[0045] In order to increase the reverse prevention function of the drain valve to avoid sewage backflow into the clean water tank during sewage treatment, a reverse prevention shell 9 is arranged on one side of the drain valve shell 1, and a through hole 16 is formed in the top of the reverse prevention shell 9 to facilitate the disassembly of the reverse prevention plate 18, and before installation, only the connecting head 14 with the reverse prevention plate 18 needs to be installed below the sealing plug 15 through the spring 17, so that the reverse prevention plate 18 is opened to one side after being stressed, and can be reset by the rebound force of the spring 17 when not stressed, so that the reverse prevention plate 18 and the supporting ring 13 are in contact, thereby playing a reverse prevention role, and then only the reverse prevention plate 18 needs to be installed in the inside of the reverse prevention shell 9 through the through hole 16, and the through hole 16 is sealed by the sealing plug 15 and the sealing cover 8. Through the structure, the reverse prevention function of the drain valve is increased, and when the drain valve is installed on the drain pipeline of the clean water tank, sewage backflow can be avoided during sewage treatment to pollute the clean water tank.

[0046] Second embodiment

[0047] Please refer to Figures 6-7 , Figure 6 The second embodiment of the drain valve with a reverse prevention function provided by the utility model is a structural schematic view; Figure 7 The second embodiment of the drain valve with a reverse prevention function provided by the utility model is a structural schematic view of a filter disc. The second embodiment of the drain valve with a reverse prevention function provided by the utility model is another drain valve with a reverse prevention function based on the first embodiment of the utility model. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0048] Specifically, the second embodiment of the drain valve with a reverse prevention function provided by the utility model is different in that an installation opening 23 is formed in the top of the reverse prevention shell 9 near the other end, and an installation cover 19 with a soft plug 24 is arranged on the top of the reverse prevention shell 9 near the other end.

[0049] The soft plug 24 can seal the installation opening 23, and the soft plug 24 is hollow in the middle to facilitate the installation of the filter disc 22.

[0050] The bottom of the installation cover 19 is fixedly connected with the filter disc 22, one end of the filter disc 22 is provided with an opening 20, and a plurality of filter holes 21 are formed in one side of the inside of the opening.

[0051] The diameter of the filter hole 21 is determined according to requirements, and the connection between the filter disc 22 and the installation cover 19 is a square block.

[0052] Compared with the related art, the drain valve with a reverse prevention function provided by the utility model has the following beneficial effects:

[0053] In order to avoid the impurities in sewage into the inside of the check housing 9, a mounting port 23 is arranged at the top of the check housing 9 near the other end, and is sealed by a mounting cover 19 with a soft plug 24, a filter disc 22 is arranged at the bottom of the mounting cover 19, an opening 20 is arranged at one side of the filter disc 22, a plurality of filter holes 21 are arranged in the inside of the opening 20, and the other end of the check housing 9 is blocked by the filter disc 22 after the mounting cover 19 is mounted, so that the impurities in the sewage tank or sewage pipe cannot directly enter the inside of the check housing 9, and the cleaning time of the inside of the check housing 9 is prolonged.

[0054] The above is only the embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A drain valve with a non-return function, characterized in that The utility model relates to a drainage valve shell, a check shell, an installation block, a first connecting pipe and a second connecting pipe. The utility model discloses a drainage valve shell, a check shell, an installation block, a first connecting pipe and a second connecting pipe. The first connecting pipe and the second connecting pipe are provided with a mounting groove on the outer surface. The sealing assembly comprises a sealing pipe, and a second supporting ring is arranged on the bottom of the inner wall of the sealing pipe.

2. The drain valve with non-return function according to claim 1, characterized in that The top of the sealing pipe is provided with a top cover, and a first supporting ring is arranged on the bottom of the top cover.

3. The drain valve with non-return function according to claim 1, characterized in that, The top of the check shell is provided with a mounting hole near the other end, and a mounting cover with a soft plug is arranged on the top of the check shell near the other end.

4. The drain valve with non-return function according to claim 3, characterized in that The bottom of the mounting cover is fixedly connected with a filter disc, and an opening is formed in one end of the filter disc.

5. The drain valve with non-return function according to claim 1, characterized in that, A plurality of filter holes are formed in one side of the opening.

6. The drain valve with non-return function according to claim 5, characterized in that ​

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