CN110454605B - Self-sealing mud valve - Google Patents

Abstract

The invention relates to the technical field of mud valves and discloses a self-sealing mud valve which comprises a valve body, wherein the valve body comprises a metal shell, a cavity is formed in the metal shell, an air bag is arranged at the bottom of the metal shell, a valve clack is fixedly connected to the upper end of the air bag, a metal rod is inserted on the surface of the valve clack, a valve rod is fixedly arranged in the metal rod, a metal block is connected to the bottom end of the metal rod in a threaded manner, metal struts are fixedly arranged at the left end and the right end of the metal block, and mounting blocks are fixedly connected to the left end and the right end of the metal strut. The whole external connection size is consistent with the current conventional product, the height and width size are consistent with the current conventional product, the valve can be completely replaced, the valve is convenient and quick, and if the failure of the valve clack is reduced by a height insufficient for sealing, the valve clack is sealed for the second time by utilizing the expansion of the safety air bag. The practicality and the security of this product can obtain dual guarantee.

Description

A self-sealing mud discharge valve

Technical Field

The invention relates to the technical field of mud discharge valves, in particular to a self-sealing mud discharge valve.

Background technique

A sludge discharge valve is installed at a specific position in a sewage treatment sedimentation tank. It is commonly used to discharge sludge from the bottom of sedimentation tanks in urban water plants and sewage treatment plants. It is a device for removing sludge and emptying the bottom of the tank. The device is mainly composed of a valve body, a valve cover, a diaphragm, a diaphragm seat, a valve disc, a valve stem, an external pipe and other accessory parts and facilities.

At present, the mud discharge valves on the market are all driven by the diaphragm pressure directly to drive the valve stem, which drives the valve disc to open or close directly, which may cause the opening/closing to be incomplete, resulting in leakage, causing sewage/sludge discharge and polluting the environment. Therefore, the conventional mud discharge valves on the market cannot provide double protection, close the seal twice and open it once, which is inconvenient to use and has safety risks.

Summary of the invention

In order to achieve the above-mentioned purpose of twice closing and sealing and one opening, the present invention provides the following technical solutions: a self-sealing mud discharge valve, comprising a valve body, the valve body comprising a metal shell, a cavity is opened inside the metal shell, a safety airbag is arranged at the bottom of the metal shell, a valve flap is fixedly connected to the upper end of the safety airbag, a metal rod is inserted on the surface of the valve flap, a valve stem is fixedly installed inside the metal rod, a metal block is threadedly connected to the bottom end of the metal rod, metal support rods are fixedly installed at the left and right ends of the metal block, and mounting blocks are fixedly connected to the left and right ends of the metal support rod, a diaphragm seat is arranged at the upper end of the metal shell, and the right end of the diaphragm seat is movably connected to the valve seat. A sealing sleeve is connected, a diaphragm is arranged on the top of the diaphragm seat, diaphragm pressure plates are arranged on the upper and lower ends of the diaphragm, a valve cover is threadedly connected to the top of the diaphragm seat, a metal valve a is movably connected to the upper left end of the valve cover, a conduit b is plugged into the upper end of the metal valve a, a metal valve b is plugged into the left end of the diaphragm seat, a conduit a is plugged into the left end of the metal valve b, a solenoid valve is arranged on the left ends of the conduit b and the conduit a, a connecting block a is fixedly installed on the right end of the metal shell, a sedimentation tank is arranged on the right side of the valve body, a pipeline is fixedly connected to the lower left end of the sedimentation tank, sludge is arranged inside the pipeline, and a connecting block b is fixedly installed on the left end of the pipeline.

The beneficial effects of the present invention are as follows: a diaphragm seat is installed on the valve body, an airbag is installed at the lower end of the valve disc and connected to the valve stem, a sealing sleeve is installed on the diaphragm seat, a limit block is used to tighten the valve stem, the upper end of the diaphragm seat is connected to the diaphragm and the diaphragm pressure plate, a bolt and a nut are used to connect the valve cover to the diaphragm seat, one end of the conduit b is connected to the threaded hole of the diaphragm seat, and the other end is connected to the solenoid valve, a section of the conduit a is connected to the threaded hole of the valve cover, and the other end is connected to the solenoid valve. When the medium passes through, the solenoid valve is energized, the upper cavity formed by the valve cover and the diaphragm is depressurized, the pressure in the middle cavity formed by the diaphragm seat and the diaphragm increases, the diaphragm pushes the valve stem and the valve disc to rise and open the outlet, and the medium flows normally. When closed, the solenoid valve is energized, the middle cavity formed by the diaphragm seat and the diaphragm is depressurized, the upper cavity formed by the valve cover and the diaphragm is pressurized, the diaphragm pushes the valve stem and the valve disc to descend and close the channel, the airbag is stamped and expanded, and the seal is tight and leak-free. The overall external connection dimensions are consistent with those of current conventional products, and the height and width dimensions are consistent with those of current conventional products. They can be completely replaced, which is convenient and quick. If the valve disc fails and the height is not enough to seal, the airbag will be inflated for a second seal. The practicality and safety of this product can be doubly guaranteed.

As an optimization, the left and right ends of the valve disc and the airbag are threadedly connected to the mounting block through fixing screws. The upper chamber pressure is transmitted to the airbag through the hollow passage of the valve stem to expand, expel excess sewage/sludge, and completely fit the valve body sealing surface to achieve a second complete sealing effect. And maintain its internal pressure, seal the valve for a long time, no leakage, environmentally friendly and safe.

As an optimization, the top end of the metal rod is threadedly connected to a limiting block and the bottom of the limiting block is fitted with the diaphragm pressing plate, and the diaphragm is fitted with the diaphragm pressing plate by rotating the limiting block.

As an optimization, the sealing sleeve fits against the outer wall of the metal rod, and is used to prevent leakage of pressure formed in the upper cavity formed by the valve cover and the diaphragm, which results in insufficient pressure to push the valve stem and valve disc up to open the outlet, allowing the medium to flow normally.

As an optimization, the left and right ends of the valve cover are threadedly connected to the diaphragm seat and the valve cover by bolts and nuts, so as to facilitate installation and disassembly as well as subsequent maintenance.

As an optimization, the connection block a is matched with the connection block b, and the sludge can be discharged normally by matching the connection block a with the connection block b.

As an optimization, the left ends of the conduit b and the conduit a are connected to the solenoid valve, and when the solenoid valve is energized, the upper chamber formed by the valve cover and the diaphragm is pressurized, and the middle chamber formed by the diaphragm seat and the diaphragm is depressurized through the conduit a, and the diaphragm pushes the diaphragm pressure plate, the diaphragm, the valve stem, the valve disc and the airbag to descend, closing the channel, and the pressure in the upper chamber enters the airbag through the hollow part of the valve stem to expand, sealing the channel, and closing the channel; when the solenoid valve is energized, the upper chamber formed by the valve cover and the diaphragm is depressurized, and the middle chamber formed by the diaphragm seat and the diaphragm is pressurized through the conduit a, and the diaphragm pushes the diaphragm pressure plate, the diaphragm, the valve stem, the valve disc and the airbag to rise, and the channel opens.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the opening of the solenoid valve structure of the present invention;

FIG. 2 is a schematic diagram of the closing of the solenoid valve structure of the present invention.

In the figure: 1-valve body, 2-airbag, 3-valve disc, 4-valve stem, 5-diaphragm seat, 6-sealing sleeve, 7-conduit a, 8-diaphragm, 9-solenoid valve, 10-diaphragm pressure plate, 11-valve cover, 12-conduit b, 13-metal block, 14-metal valve b, 15-metal shell, 16-metal valve a, 17-limit block, 18-metal rod, 19-bolt, 20-nut, 21-connecting block b, 22-pipeline, 23-fixing screw, 24-cavity, 25-connecting block a, 26-sludge, 27-sedimentation tank, 28-mounting block, 29-metal support rod.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 and 2. A self-sealing mud valve includes a valve body 1. The valve body 1 includes a metal shell 15. A cavity 24 is formed inside the metal shell 15. A safety airbag 2 is provided at the bottom of the metal shell 15. A valve flap 3 is fixedly connected to the upper end of the safety airbag 2. A metal rod 18 is inserted on the surface of the valve flap 3. The top of the metal rod 18 is threadedly connected to a limit block 17 and the bottom of the limit block 17 is fitted with a diaphragm pressure plate 10. The diaphragm 8 is fitted with the diaphragm pressure plate 10 by rotating the limit block 17. The inner surface of the metal rod 18 is fixedly connected to the valve flap 3. The valve stem 4 is fixedly installed on the bottom, the bottom end of the metal rod 18 is threadedly connected to the metal block 13, the left and right ends of the metal block 13 are fixedly installed with metal support rods 29, the left and right ends of the metal support rods 29 are fixedly connected to the mounting blocks 28, the left and right ends of the valve disc 3 and the airbag 2 are threadedly connected to the mounting blocks 28 through fixing screws 23, the upper chamber pressure is transmitted to the airbag 2 through the hollow passage of the valve stem 4 to expand, discharge the excess sewage/sludge 26, and completely fit the sealing surface of the valve body 1 to achieve a second complete sealing effect. And maintain its internal pressure, long-term sealing valve, no leakage, environmental protection and safety, the upper end of the metal shell 15 is provided with a diaphragm seat 5, the right end of the diaphragm seat 5 is movably connected with a sealing sleeve 6, the sealing sleeve 6 is fitted with the outer wall of the metal rod 18, and the sealing sleeve 6 is used to prevent the pressure formed in the upper cavity formed by the valve cover 11 and the diaphragm 8 from leaking, resulting in insufficient pressure to push the valve stem 4 and the valve disc 3 to rise and open the outlet, so that the medium can flow normally, the top of the diaphragm seat 5 is provided with a diaphragm 8, and the upper and lower ends of the diaphragm 8 are provided with diaphragm pressure plates 10, and the diaphragm seat The top of the valve cover 5 is threadedly connected with a valve cover 11, and the left and right ends of the valve cover 11 are threadedly connected to the diaphragm seat 5 and the valve cover 11 by bolts 19 and nuts 20, so that installation and disassembly as well as later maintenance can be conveniently performed. The upper left end of the valve cover 11 is movably connected with a metal valve a16, and the upper end of the metal valve a16 is plugged with a conduit b12. The left end of the diaphragm seat 5 is plugged with a metal valve b14, and the left end of the metal valve b14 is plugged with a conduit a7. The left ends of the conduits b12 and a7 are provided with electromagnetic valves 9, and the conduits b12 and a7 are connected to each other. The left end of a7 is connected to the electromagnetic valve 9. When the electromagnetic valve 9 is energized, the upper cavity formed by the valve cover 11 and the diaphragm 8 is pressurized, and the middle cavity formed by the diaphragm seat 5 and the diaphragm 8 is depressurized through the conduit a7. The diaphragm 8 pushes the diaphragm pressure plate 10, the diaphragm 8, the valve stem 4, the valve disc 3 and the airbag 2 to descend, closing the channel. The pressure in the upper cavity enters the airbag 2 through the hollow of the valve stem 4 to expand, sealing the channel, and closing the channel. When the electromagnetic valve 9 is energized, the upper cavity formed by the valve cover 11 and the diaphragm 8 is depressurized, and the middle cavity formed by the diaphragm seat 5 and the diaphragm 8 is pressurized through the conduit a7. 8 pushes the diaphragm pressure plate 10, the diaphragm 8, the valve stem 4, the valve disc 3 and the airbag 2 to rise, the channel opens, a connecting block a25 is fixedly installed on the right end of the metal shell 15, a sedimentation tank 27 is arranged on the right side of the valve body 1, a pipe 22 is fixedly connected to the lower left end of the sedimentation tank 27, sludge 26 is arranged inside the pipe 22, a connecting block b21 is fixedly installed on the left end of the pipe 22, the connecting block a25 matches the connecting block b21, and the sludge 26 can be discharged normally by matching the connecting block a25 with the connecting block b21.

When in use, the solenoid valve 9 is energized, the upper cavity formed by the valve cover 11 and the diaphragm 8 is pressurized, the middle cavity formed by the diaphragm seat 5 and the diaphragm 8 is pressurized through the conduit a7, and the diaphragm 8 pushes the diaphragm pressure plate 10, the diaphragm 8, the valve stem 4, the valve disc 3 and the airbag 2 to descend, closing the channel, and the upper cavity pressure enters the airbag 2 through the hollow valve stem 4 to expand, sealing the channel, and the channel is closed; opening process: the solenoid valve 9 is energized, the upper cavity formed by the valve cover 11 and the diaphragm 8 is pressurized, the middle cavity formed by the diaphragm seat 5 and the diaphragm 8 is pressurized through the conduit a7, and the diaphragm 8 pushes the diaphragm pressure plate 10, the diaphragm 8, the valve stem 4, the valve disc 3 and the airbag 2 to rise, and the channel is opened.

The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (7)

1. A self-sealing mud discharge valve, comprising a valve body (1), characterized in that: the valve body (1) comprises a metal shell (15), a cavity (24) is provided inside the metal shell (15), a safety airbag (2) is arranged at the bottom of the metal shell (15), a valve flap (3) is fixedly connected to the upper end of the safety airbag (2), a metal rod (18) is inserted on the surface of the valve flap (3), a valve stem (4) is fixedly installed inside the metal rod (18), a metal block (13) is threadedly connected to the bottom end of the metal rod (18), metal support rods (29) are fixedly installed at the left and right ends of the metal block (13), and the left and right ends of the metal support rod (29) are fixedly connected to the mounting block (28), a diaphragm seat (5) is arranged at the upper end of the metal shell (15), a sealing sleeve (6) is movably connected to the right end of the diaphragm seat (5), and a diaphragm is arranged at the top end of the diaphragm seat (5). The diaphragm (8) is provided with a diaphragm pressure plate (10) at both upper and lower ends of the diaphragm seat (5), a valve cover (11) is threadedly connected to the top of the diaphragm seat (5), a metal valve a (16) is movably connected to the upper left end of the valve cover (11), a conduit b (12) is plugged into the upper end of the metal valve a (16), a metal valve b (14) is plugged into the left end of the diaphragm seat (5), a conduit a (7) is plugged into the left end of the metal valve b (14), a solenoid valve (9) is provided at the left ends of the conduit b (12) and the conduit a (7), a connection block a (25) is fixedly installed at the right end of the metal shell (15), a sedimentation tank (27) is provided on the right side of the valve body (1), a pipeline (22) is fixedly connected to the lower left end of the sedimentation tank (27), sludge (26) is provided inside the pipeline (22), and a connection block b (21) is fixedly installed at the left end of the pipeline (22). 2. A self-sealing mud discharge valve according to claim 1, characterized in that the left and right ends of the valve flap (3) and the airbag (2) are both threadedly connected to the mounting block (28) through fixing screws (23). 3. A self-sealing mud discharge valve according to claim 1, characterized in that the top end of the metal rod (18) is threadedly connected to the limit block (17) and the bottom of the limit block (17) is in contact with the diaphragm pressure plate (10). 4. A self-sealing mud discharge valve according to claim 1, characterized in that the sealing sleeve (6) is in contact with the outer wall of the metal rod (18). 5. A self-sealing mud discharge valve according to claim 1, characterized in that the metal shell (15) and the valve cover (11) are threadedly connected at both left and right ends of the valve cover (11) by bolts (19) and nuts (20). 6. A self-sealing mud discharge valve according to claim 1, characterized in that the connecting block a (25) matches the connecting block b (21). 7. A self-sealing mud discharge valve according to claim 1, characterized in that the left ends of the conduit b (12) and the conduit a (7) are connected to the solenoid valve (9).