Underground rubber-lined butterfly valve with ductile iron flange

Abstract

The utility model discloses a ductile iron flange underground rubber lining butterfly valve which comprises a butterfly valve body, a mounting flange is fixed to the end of the butterfly valve body, an extending liquid inlet pipe is fixedly arranged on the surface of the mounting flange, an adjusting pipe is installed on one side of the extending liquid inlet pipe, and a sealing gasket is fixedly installed on the outer side of the adjusting pipe. A butt flange is fixedly installed at the end, away from the extending liquid inlet pipe, of the sealing gasket, and a penetrating hole is formed in the surface of the butt flange. According to the ductile iron flange underground rubber-lined butterfly valve, through the arrangement of the sealing gasket, a gap between the extending liquid inlet pipe and the adjusting pipe can be sealed, so that liquid leakage is avoided when the extending liquid inlet pipe and the adjusting pipe transmit fluid, and the adjusting pipe is inserted into the extending liquid inlet pipe by the depth, so that the sealing effect is improved. And the positioning width of the butterfly valve body is adjusted to adapt to a reserved space between two different groups of pipelines, so that the butterfly valve is more rapid and convenient to install.

Description

Technical Field

[0001] The utility model relates to the field of butterfly valves, in particular to a ductile iron flange underground rubber-lined butterfly valve. Background Technique

[0002] The pneumatic ductile iron rubber-lined flange butterfly valve has a simple structure, small size and light weight, and is composed of only a few parts; moreover, it can be quickly opened and closed by rotating only 90°, with simple operation. At the same time, the valve has good fluid control characteristics; when the butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance when the medium flows through the valve body, so the pressure drop generated by passing through this valve is very small, so it has better flow control characteristics. The butterfly valve has a small volume and occupies little space; it has good sealing performance. Specifically, it is still selected according to the medium, temperature, pressure, etc. The installation of the wafer type butterfly valve is to connect the valve between the two pipeline flanges with through bolts.

[0003] The components of the butterfly valve mainly consist of a valve body, a valve stem, a valve core and a valve seat; the valve body is cylindrical, with a short axial length and a built-in butterfly plate; when the butterfly valve is actually installed, sometimes the space reserved between two groups of pipelines is narrow or wide, and the width of the butterfly valve is fixed and cannot be adjusted according to the width reserved between the two groups of pipelines, increasing the difficulty of installation. Content of the Utility Model

[0004] The purpose of the utility model is to provide a ductile iron flange underground rubber-lined butterfly valve to solve the defects mentioned in the above background technique.

[0005] To achieve the above purpose, a ductile iron flange underground rubber-lined butterfly valve is provided, including a butterfly valve body. An installation flange is fixed at the end of the butterfly valve body, and an extended liquid inlet pipe is fixedly arranged on the surface of the installation flange. At the same time, an adjusting pipe is installed on one side of the extended liquid inlet pipe, and a sealing gasket is fixedly installed on the outside of the adjusting pipe. One end of the sealing gasket away from the extended liquid inlet pipe is fixedly installed with a butt flange, and an insertion hole is opened on the surface of the butt flange. Studs are fixedly installed on the circumferential outer wall of the installation flange, and the ends of the studs pass through the insertion holes opened on the butt flange and are fixedly connected by two groups of nuts. A filter cylinder is installed inside the left end of the adjusting pipe.

[0006] Preferably, five groups of studs are evenly installed on the outer surface of the butterfly valve body, and the distance between adjacent two groups of studs is the same. At the same time, the five groups of studs are evenly distributed along the circumferential outer wall of the extended liquid inlet pipe.

[0007] Preferably, the axial sections of the extended liquid inlet pipe, the adjusting pipe and the sealing gasket are concentric circle structures, and the adjusting pipe is inserted into the extended liquid inlet pipe and is sealed and connected through the sealing gasket.

[0008] Preferably, the depth of the adjustment pipe inserted into the extension liquid inlet pipe is fixed by five sets of studs, butt flanges and multiple sets of nuts. Multiple sets of reinforcing seats are evenly arranged at the connection between the extension liquid inlet pipe and the installation flange, and the cross-section of the reinforcing seat is set as a right-angled trapezoid.

[0009] Preferably, multiple sets of sieve holes are evenly formed on the outer surface of the filter cartridge, and the filter cartridge is a detachable structure inside the adjustment pipe.

[0010] Preferably, the cross-section of the filter cartridge is set in a "U" shape, and four sets of positioning seats are evenly and fixedly arranged on the circumferential outer wall at the opening of the filter cartridge. Four sets of positioning grooves are evenly formed on the surface of the butt flange. At the same time, the sizes of the positioning grooves and the positioning seats are adapted to each other, and the positioning seats are inserted into the positioning grooves and fixed by bolts.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. Through the arrangement of the sealing gasket, the present utility model can seal the gap between the extension liquid inlet pipe and the adjustment pipe, so that when the extension liquid inlet pipe and the adjustment pipe are transmitting fluid, liquid leakage will not occur. By adjusting the depth of the adjustment pipe inserted into the extension liquid inlet pipe, the sitting width of the butterfly valve body is adjusted to adapt to the reserved space between two different pipes, making the installation more rapid and convenient.

[0013] 2. When water enters the adjustment pipe, a filter cartridge is fixedly installed inside the adjustment pipe. The filter cartridge can filter the sewage entering the adjustment pipe and intercept sludge and stones in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view schematic diagram of the structure of the present utility model;

[0015] Figure 2 is Figure 1 the bottom view of

[0016] Figure 3 is Figure 1 the top view of

[0017] Figure 4 is Figure 1 the rear view of

[0018] Reference numerals in the drawings: 1, butterfly valve body; 2, installation flange; 3, reinforcing seat; 4, extension liquid inlet pipe; 5, stud; 6, adjustment pipe; 7, sealing gasket; 8, butt flange; 81, positioning groove; 9, insertion hole; 10, filter cartridge; 101, positioning seat; 102, sieve hole. DETAILED DESCRIPTION OF THE INVENTION

[0019] Please refer to Figures 1-4 Figures 1-4 This utility model provides a ductile iron flange underground rubber-lined butterfly valve, which includes a butterfly valve body 1. An installation flange 2 is fixed at the end of the butterfly valve body 1, and an extended liquid inlet pipe 4 is fixedly arranged on the surface of the installation flange 2. At the same time, a regulating pipe 6 is installed on one side of the extended liquid inlet pipe 4, and a sealing gasket 7 is fixedly installed on the outer side of the regulating pipe 6. One end of the sealing gasket 7 away from the extended liquid inlet pipe 4 is fixedly installed with a docking flange 8, and an insertion hole 9 is formed on the surface of the docking flange 8. Studs 5 are fixedly installed on the circumferential outer wall of the installation flange 2, and the ends of the studs 5 pass through the insertion holes 9 formed on the docking flange 8 and are fixedly connected by two groups of nuts. A filter cylinder 10 is installed inside the left end of the regulating pipe 6.

[0020] Working principle: When in use, first, the sitting installation width of the butterfly valve body 1 can be adjusted through the reserved space between the two groups of pipes. The specific adjustment method is as follows: Hold the docking flange 8 by hand and insert the regulating pipe 6 at the end of the docking flange 8 into the inside of the extended liquid inlet pipe 4. At the same time, both the extended liquid inlet pipe 4 and the regulating pipe 6 are circularly arranged. A sealing gasket 7 is fixedly installed on the outer side of the regulating pipe 6. At the same time, the setting of the sealing gasket 7 can seal the gap between the extended liquid inlet pipe 4 and the regulating pipe 6, so that when the extended liquid inlet pipe 4 and the regulating pipe 6 are transmitting fluid, there will be no liquid leakage. The sitting width of the butterfly valve body 1 is adjusted by the depth of inserting the regulating pipe 6 into the extended liquid inlet pipe 4 to adapt to the reserved space between different two groups of pipes, making the installation more rapid and convenient. At this time, when water enters the inside of the regulating pipe 6, a filter cylinder 10 is positioned and installed inside the regulating pipe 6. The setting of the filter cylinder 10 can filter the sewage entering the inside of the regulating pipe 6, and can filter and intercept the sludge and stones in the sewage. When the filter cylinder 10 is specifically installed, hold the filter cylinder 10 by hand and insert the filter cylinder 10 into the inside of the regulating pipe 6. At this time, five positioning seats 101 are respectively inserted and fixed in five positioning grooves 81 on the outer side of the regulating pipe 6. The positioning seats 101 are inserted into the positioning grooves 81 and fixed by bolts, which can ensure the stability of the filter cylinder 10 during operation and prevent it from loosening and shifting.

[0021] Five studs 5 are evenly installed on the outer surface of the butterfly valve body 1, and the distance between two adjacent studs 5 is the same. At the same time, the five studs 5 are evenly distributed along the circumferential outer wall of the extended liquid inlet pipe 4.

[0022] As a preferred embodiment, the axial cross-sections of the extended liquid inlet pipe 4, the regulating pipe 6 and the sealing gasket 7 are concentric circle structures, and the regulating pipe 6 is inserted into the inside of the extended liquid inlet pipe 4 and is hermetically connected through the sealing gasket 7.

[0023] The insertion depth of the adjusting pipe 6 into the internal part of the extending liquid inlet pipe 4 is fixed by five groups of studs 5, docking flanges 8 and multiple groups of nuts. Multiple groups of strengthening seats 3 are evenly arranged at the connection between the extending liquid inlet pipe 4 and the mounting flange 2, and the cross-section of the strengthening seat 3 is arranged in a right trapezoid shape.

[0024] As a preferred implementation manner, multiple groups of sieve holes 102 are evenly formed on the outer surface of the filter cartridge 10, and the filter cartridge 10 is a detachable structure inside the adjusting pipe 6.

[0025] The cross-section of the filter cartridge 10 is arranged in a "U" shape, and four groups of positioning seats 101 are evenly and fixedly arranged on the circumferential outer wall at the opening of the filter cartridge 10. Four groups of positioning grooves 81 are evenly formed on the surface of the docking flange 8. At the same time, the sizes of the positioning grooves 81 and the positioning seats 101 are adapted to each other, and the positioning seats 101 are inserted into the positioning grooves 81 and fixed by bolts.

Claims

1. A ductile iron flange underground rubber-lined butterfly valve, comprising a butterfly valve body (1), characterized in that: An installation flange (2) is fixed to the end of the butterfly valve body (1), and an extended liquid inlet pipe (4) is fixedly arranged on the surface of the installation flange (2). At the same time, a regulating pipe (6) is installed on one side of the extended liquid inlet pipe (4), and a sealing gasket (7) is fixedly installed on the outer side of the regulating pipe (6). One end of the sealing gasket (7) far from the extended liquid inlet pipe (4) is fixedly installed with a butt flange (8), and an insertion hole (9) is formed on the surface of the butt flange (8). A stud (5) is fixedly installed on the circumferential outer wall of the installation flange (2), and the end of the stud (5) passes through the insertion hole (9) formed on the butt flange (8) and is fixedly connected by two groups of nuts. A filter cartridge (10) is installed inside the left end of the regulating pipe (6).

2. The ductile iron flange underground rubber-lined butterfly valve according to claim 1, characterized in that: Five groups of studs (5) are evenly installed on the outer surface of the butterfly valve body (1), and the distance between adjacent two groups of studs (5) is the same. At the same time, the five groups of studs (5) are evenly distributed along the circumferential outer wall of the extended liquid inlet pipe (4).

3. A ductile iron flange underground rubber-lined butterfly valve according to claim 1, characterized in that: The axial cross-sections of the extended liquid inlet pipe (4), the regulating pipe (6) and the sealing gasket (7) are concentric circle structures, and the regulating pipe (6) is inserted into the extended liquid inlet pipe (4) and is hermetically connected through the sealing gasket (7).

4. A ductile iron flange underground rubber-lined butterfly valve according to claim 3, characterized in that: The depth of the regulating pipe (6) inserted into the extended liquid inlet pipe (4) is fixed by five groups of studs (5), the butt flange (8) and multiple groups of nuts. Multiple groups of reinforcing seats (3) are evenly arranged at the connection between the extended liquid inlet pipe (4) and the installation flange (2), and the cross-section of the reinforcing seat (3) is in a right trapezoid shape.

5. The ductile iron flange underground rubber-lined butterfly valve according to claim 1, characterized in that: Multiple groups of sieve holes (102) are evenly formed on the outer surface of the filter cartridge (10), and the filter cartridge (10) is a detachable structure inside the regulating pipe (6).

6. A ductile iron flange underground rubber-lined butterfly valve according to claim 5, characterized in that: The cross-section of the filter cartridge (10) is in a "U" shape, and four groups of positioning seats (101) are evenly and fixedly arranged on the circumferential outer wall at the opening of the filter cartridge (10). Four groups of positioning grooves (81) are evenly formed on the surface of the butt flange (8). At the same time, the sizes of the positioning grooves (81) and the positioning seats (101) are adapted to each other, and the positioning seats (101) are inserted into the positioning grooves (81) and are fixed by bolts.

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