1171 results about "Gate valve" patented technology

The invention relates to the technical field of intelligent gate valve control, in particular to an intelligent induction type automatic adjusting gate valve system.An analysis module of a calibration unit in the intelligent induction type automatic adjusting gate valve system recognizes signal distortion by comparing historical working condition databases, extracts the viscosity change trend and deduces the impurity accumulation rate; a dynamic compensation factor is generated by an offset calculation model subjected to multi-source transfer learning training, the signal amplitude and phase are corrected by a compensation module through dual-channel closed-loop correction, and compensation logic is optimized by combining distortion residual detection and model online incremental learning; a PID controller of the control unit adopts a parameter self-tuning strategy, dynamically adjusts parameters according to the viscosity acceleration, the impurity accumulation rate and the synchronous error, generates a gate valve opening instruction to drive an execution mechanism, counteracts signal distortion caused by viscosity change and impurity accumulation, improves the adjusting precision and guarantees stable and efficient fluid conveying.

A gate valve includes a valve body having a through-bore and gate a cavity that are substantially perpendicular to each other; an upper bonnet coupled to the valve body; an operator housing coupled to the valve body; a gate slidably disposed within the gate cavity; a piston, at least partially disposed within an interior cavity of the operator housing; an operator coupled to a first end of the piston; an operating stem, at least partially disposed within the gate cavity, an upper bonnet interior cavity, and the operator housing interior cavity. The operating stem is coupled to the piston and to the gate. The operating stem is coupled to the piston with a free floating connection to provide lateral movement of the operating stem relative to the piston. A t-shaped adapter may be used to connect the operating stem to the piston in a free floating manner.

The utility model belongs to the technical field of gate valves, and particularly discloses a gate plate limiting mechanism for a hard sealing gate valve, which comprises a valve body, the outer surface of the valve body is fixedly connected with two symmetrical fixing blocks, one side of each fixing block is provided with an adjusting groove, and the inside of each adjusting groove is slidably connected with two symmetrical first moving rods. The limiting mechanism comprises two first moving rods, the interiors of the first moving rods are of hollow structures, the interiors of the two first moving rods are both slidably connected with second moving rods extending to the exteriors of the first moving rods, and the two second moving rods are both fixedly connected with positioning plates. The two-way threaded rod drives the two first moving rods to move relatively under the limitation of the adjusting groove, the two positioning plates can move relatively, meanwhile, the two positioning plates can clamp, position and limit an external pipeline, and therefore the device can be installed on the external pipeline more smoothly.

The present invention provides a method to produce a triple seal in a reversible gate valve utilizing only two seals that seal between the seat and the valve body on each of two seats in the gate. The method utilizes a hybrid seal configuration with only one U-shaped seal and one O-ring on each seat. The U-shaped seal on each seat is the primary seal, which is an upstream seal. Should the primary seal leak then the O-ring forms a secondary upstream seal. Should the secondary upstream seal leak then the valve is constructed so that the O-ring on the downstream seat creates a downstream tertiary seal. Since the seal configuration on each seat is the same, the valve is reversible. In other words, regardless of orientation of the valve with respect to upstream and downstream, the method of the present invention produces a gate valve with a triple seal.

The invention discloses a gate valve opening degree control method and device, and relates to the technical field of industrial automation control, and the method comprises the following steps: obtaining valve structure data and actuator types, reading an initial value of a valve position sensor, building a valve position zero point, and loading an initial valve position-flow mapping model; an error is calculated according to the target process variable and the current measured value, and a valve position target value is generated through an outer ring controller; querying the valve position-flow mapping model according to the valve position target value, and performing deviation correction in combination with real-time flow measurement to obtain a corrected valve position target value; the friction state is predicted according to the valve position change rate and the actuator current signal, the friction compensation amount is generated, the corrected valve position target value is corrected, and a final valve position instruction is obtained; and the final valve position instruction is compared with the actual valve position, the driving amount is calculated through an inner ring controller, an actuator is driven to act, and the actual valve position is made to approach the final valve position instruction.

The invention relates to the technical field of building construction, and discloses a construction site water recycling system which comprises a control module, a water well, a sedimentation tank, a water tank, an increasing pump and a spraying pipe. The sedimentation tank at least comprises a first purification tank and a second purification tank, a filtering wall is arranged on the top side of a wall between the two tanks, and a drainage pipe is assembled on the bottom side of the second purification tank; the well is communicated with the first purifying pond through a first pipeline; a first submersible pump at one end of the first pipeline is arranged in the well; the second purifying pond is connected with the water tank through a second pipeline, a second submersible pump at one end of the second pipeline is arranged in the second purifying pond, and a first gate valve, a water meter and a filter are sequentially arranged on the pipeline; the booster pump is connected with the water tank through a third pipeline with a second gate valve and connected with the spraying pipe through a fourth pipeline with a third gate valve. And the control module is electrically connected with the water meter and each gate valve, so that full-flow intelligent cooperative control of water source extraction, purification, transmission and distribution and spraying is realized.

The present invention discloses a gate valve with an upper side and lower side relative the throughbore whereby the lower side is defined by a non-circular outer body. A circular body cavity is on the upper side and a rectangular body cavity is the lower side and a portion of the first side whereby the gate is operable to move up and down within the body cavities. A skirt assembly having spacers is used which is inserted over the gate to cover the gate opening when the gate is moved to the closed position to limit debris and other contaminants from entering the body cavity. The valve may be used with manual, hydraulic, failsafe operators that are interchangeably mountable to the same gate valve without otherwise changing the gate valve.

The utility model discloses a sluice valve with an anti-locking function, and particularly relates to the technical field of sluice valves, the sluice valve comprises a sluice valve body, a hollow cavity, an electric heating wire and a wire slip ring, the upper end of the sluice valve body is provided with a connecting seat, the upper end of the connecting seat is provided with a valve cover, the upper end of the valve cover is provided with a limiting support, and an inner cavity of the limiting support is provided with a valve rod; the hollow cavity is formed in the center of an inner cavity of the valve rod, the electric heating wire is installed in an inner cavity of the hollow cavity, a wire sliding ring is installed in the center of the upper end of the rotating hand wheel, and a gate plate is installed at the bottom of the valve rod. The hollow cavity and the electric heating wire are arranged, the electric heating wire can continuously and stably obtain electric energy in the rotating process of the valve rod through the wire sliding ring, generated heat can be evenly transmitted to the whole rod body from the inside, the whole valve rod is kept at a certain temperature, the valve rod is prevented from being frozen, and the service life of the valve rod is prolonged. Normal opening and closing operation of the valve can be guaranteed, and the situation that the valve is stuck or cannot work normally due to freezing is avoided.

The utility model belongs to the technical field of asphalt treatment equipment, and particularly relates to a retention tower for asphalt treatment, which comprises a retention tower body and an asphalt circulating component serially connected to one side of the retention tower body, and an emergency discharge outlet for emergency discharge is further formed in the outer wall of one side of the retention tower body. A connecting pipeline communicated with the asphalt circulating assembly is arranged at one end of the emergency discharging outlet, a first gate valve and a second gate valve which are connected with the asphalt circulating assembly and the emergency discharging outlet are arranged at the two ends of the connecting pipeline respectively, and a pipeline emptying opening is formed between the first gate valve and the connecting pipeline; according to the utility model, the emergency discharge outlet and the connecting pipeline are additionally arranged on the retention tower body, and the emergency discharge outlet and the asphalt circulating assembly are mutually standby lines through the connecting pipeline, so that asphalt in the retention tower body is conveniently discharged in emergency, and temporary pressure tapping is avoided.

This utility model discloses a ventilation and anti-clogging device for a standby boiler dust collector, comprising: an inlet flue, an induced draft fan, a connecting assembly, and a limiting assembly. The induced draft fan is located at one end of the inlet flue. The connecting assembly includes a branch pipe located at the bottom of the inlet flue, with a first gate valve located in the middle of the branch pipe and a series pipe located at the bottom of the first gate valve. The limiting assembly is located at the output end of the induced draft fan and is used to restrict gas flow. The limiting assembly includes a first pipe located at the output end of the induced draft fan, with a second gate valve located at one end of the first pipe. Through the design of the branch pipe, the first gate valve, and the series pipe, this utility model allows the first gate valve to be opened during operation, enabling the induced draft fan of the adjacent operating boiler to draw away leaked flue gas and maintain a slight negative pressure inside the standby boiler. This eliminates the need to operate the standby boiler's induced draft fan, keeping the furnace and tail flue dry and thus avoiding wasted electricity.

The invention discloses a wall-attached sewage discharge garbage can which comprises a garbage can shell, a can cover plate, a gate valve and an arc-shaped slag partition plate, the garbage can is a combination of various shapes, arcs and straight lines, a bottom plate of the garbage can is provided with a sewage discharge hole, the gate valve is installed, sewage is discharged, the arc-shaped slag partition plate is installed in the garbage can through screws, and the inner wall of the garbage can is provided with a side wall thickening batten. The garbage can has the advantages of being convenient to use, sanitary, reliable and capable of effectively preventing stinky smell, solves the problem that household garbage carried by residents upstairs is discarded on the side of a road, is not easy to fall off, and is not easy to fall off when the residents upstairs throw the household garbage on the side of the road. The invention is a primary problem of urban hygiene renovation, which affects the life of urban and rural residents.

A gate valve according to the present invention is configured to partition a flow path. The gate valve has a valve box, a valve body, a rotary shaft, a rotation drive unit, a pressing drive unit, a driving pressure generation mechanism, and an energy regeneration mechanism. The rotation drive unit is capable of rotationally driving the valve body. The pressing drive unit is provided in the valve box. The pressing drive unit moves the valve body, in a direction along the flow path, from a valve-opening covering position to a valve closing position at which the valve body contacts the peripheral edge portion, and presses the valve body. The driving pressure generation mechanism is connected to the pressing drive unit and is capable of causing the pressing drive unit to expand and contract. The energy regeneration mechanism regenerates drive energy for valve operation.

This utility model discloses a silicon carbide ceramic membrane gas separation device, specifically relating to the technical field of ceramic membrane gas separation devices. It includes a mounting base and a switching structure. A first filter assembly and a second filter assembly are fixedly mounted on the top of the mounting base. The switching structure is fixedly connected inside the first and second filter assemblies, which have identical structures. This silicon carbide ceramic membrane gas separation device, through the cooperation of the first adjusting rod, the second adjusting rod, and the mounting bracket, allows the extension of the telescopic rod to close the first and third gate valves and open the second and fourth gate valves. In summary, this device can flexibly switch the working states of the first and second filter assemblies. By alternating between the first and second filter assemblies, the device will not stop operating when maintaining one set of filter assemblies.

This invention discloses a detection device and an oil storage device. The detection device includes a support member, a detection component, and a signal processing module. The support member includes a first mounting portion and a second mounting portion spaced apart from the first mounting portion along the height direction of the support member. The detection component includes a mounting member, a sensing device, a first trigger fixed to the first mounting portion, and a second trigger fixed to the second mounting portion. The mounting member can be fixedly connected to one end of a valve stem so as to extend and retract with the valve stem along the height direction of the support member, and has a first position and a second position. The sensing device is fixed to the mounting member. The signal processing module is insulated from the support member and electrically connected to the sensing device. This detection device can check the open or closed state of a manual gate valve. When applied to an oil storage device, this detection device can improve inspection efficiency and reduce the labor intensity of troubleshooting.

The utility model relates to the technical field of non-rising stem gate valves, in particular to a non-rising stem gate valve which comprises a valve body and an intercepting device, a valve rod is arranged on the inner wall of the valve body, a handle is installed at the upper end of the valve rod, the intercepting device is arranged in the inner wall of the valve body and comprises a supporting piece, a movable piece and a filtering piece, and the supporting piece is fixedly connected with the inner wall of the valve body. According to the utility model, the intercepting device is arranged, and the supporting piece, the movable piece and the filtering piece are matched with one another, so that entering liquid can be filtered, impurities can be pushed to be cleaned when the movable piece and the filtering piece are pulled out through the pull rod, meanwhile, the filtering piece can be cleaned through the cleaning assembly, the whole device is convenient to use, the impurities can be intercepted, and the practicability is high. Impurities directly entering the non-rising stem gate valve and a groove or other key parts matched with the non-rising stem gate valve in a sealing mode are reduced, abrasion and damage caused by extrusion of the non-rising stem gate valve and the impurities are greatly reduced, and the service life of the non-rising stem gate valve is prolonged.

The application relates to the field of valves, in particular to a valve seat replaceable gate valve which comprises a valve body and a valve cover, the valve cover is installed on the top side of the valve body, the valve cover is installed with a valve rod, the valve rod is installed with a valve plate, two valve seats are arranged in the valve body, convex rings and first sealing rings are coaxially and fixedly installed on the sides away from each other of the two valve seats, the first sealing rings are sleeved on the convex rings, the valve body is provided with containing grooves for clamping the convex rings and the valve seats, the valve seats are installed with limiting mechanisms, the limiting mechanisms are used for limiting the valve seats from sliding out of the containing grooves, ring grooves are arranged on the sides close to each other of the two valve seats, and second sealing rings are fixedly installed in the ring grooves. The application has the effect of conveniently replacing the valve seats.

The utility model relates to valve technical field, especially a kind of impact-resistant gate valve, including valve body, the valve seat groove being opened in valve body, the fluid passage being opened in valve body and being penetrated valve seat groove, the valve plate being slidably arranged in valve seat groove and being matched with valve seat groove, the valve cover being set on valve body, the valve stem being rotatably set on valve cover by rotating device, lifting device is arranged between the valve stem and valve plate, buffering device for buffering backflow fluid is further arranged in the fluid passage.

The utility model discloses an electric gate valve convenient to connect, and relates to the technical field of electric gate valves. The controller is arranged on the outer surface of the connecting valve body and used for controlling, an adjusting unit is arranged on the outer surface of the connecting valve body, a limiting unit is arranged on the outer surface of the adjusting unit, and the adjusting unit comprises a driving assembly arranged on the outer surface of the connecting valve body and a manual assembly arranged on the outer surface of the driving assembly. The limiting unit comprises an adjusting assembly arranged on the outer surface of the adjusting unit. According to the utility model, the connecting base, the shell, the driving motor, the manual valve, the bevel gear I, the connecting rod and the bevel gear II are matched with one another, so that the valve body in the connecting valve body can be adjusted; and an electromagnet, a fixing rod, a clamping block, a connecting rope, a limiting sliding rod, a limiting spring, a movable plate, a permanent magnet and a limiting tooth block are matched with one another, so that the position of the limiting tooth block can be adjusted, and the practicability of the electric gate valve is improved.

The utility model discloses a high-strength gate valve and relates to the field of ball valves. The high-strength gate valve comprises a valve body unit and a lifting unit arranged above the valve body unit, the valve body unit comprises two valve body main bodies and a gate plate, the two valve body main bodies are symmetrically arranged, a sealing shell is installed between the two valve body main bodies, a movable cavity is formed between the valve body main bodies and the sealing shell, the gate plate is arranged in the movable cavity in a sliding mode, and the gate plate is arranged in the movable cavity. The gate plate can vertically move through the lifting unit and comprises a thickened plate body and a protective plate body, and the protective plate body tightly abuts against the thickened plate body. According to the high-strength gate valve, the protection plate body is arranged on the thickening plate body, the overall strength of the gate plate is improved, and when the protection plate body is damaged, the protection plate body can be independently detached and replaced.

The utility model discloses a gate valve machining-based combined device with an automatic turn-over function, and relates to the technical field of valve machining. The gate valve machining-based combined device with the automatic turn-over function comprises a punching unit, a turn-over unit and a gate valve, the turn-over unit is located on the inner side of the punching unit, and the gate valve is located above the turn-over unit. According to the gate valve machining-based combined device with the automatic turn-over function, by arranging the turn-over unit and utilizing meshing transmission of a gear ring and a gear, a positioning disc can drive a gate valve to automatically turn over, manual operation is not needed, and the machining efficiency is greatly improved; the position of the drilling machine can be flexibly adjusted through two sets of fixed sliding grooves and driving screw rods in the punching unit, the requirement for punching in different positions of the gate valve is met, and the machining flexibility and precision are improved; the whole device is compact in structure, all parts are tightly matched, stability is high, the device can adapt to large-scale gate valve machining production, and the labor intensity of workers is reduced.

The present application relates to a kind of sealing gasket structure, including ring groove, split ring, sealing ring and sealing ring pressure ring;The thickness of split ring is less than the width of ring groove, split ring is installed at the groove bottom of ring groove, and is made of multiple sections, and split ring is abutted on the groove wall of ring groove.There is limiting portion for limiting split ring to move outward on the groove wall abutting with split ring;Sealing ring is abutted on the groove wall with limiting portion, the bottom of sealing ring is abutted on split ring, and the top is overflowed from the slot opening of ring groove;The two sides of the bottom of sealing ring pressure ring are respectively abutted on split ring and the groove wall away from limiting portion, and the middle part of sealing ring pressure ring is pressed on sealing ring and split ring.In addition, a special gate valve for Yellow River water is also provided.The above-mentioned sealing gasket structure and special gate valve for Yellow River water, split ring and sealing ring pressure ring are fixed, so that sealing ring can be firmly installed in valve seat ring groove, and is clamped and fixed by limiting portion located on the side wall of ring groove, to realize the quick and convenient disassembly of sealing gasket structure, and low use cost.

The utility model relates to the technical field of gate valves, in particular to a hard sealing gate valve which comprises a valve body, a valve handle seat arranged on the valve body and a valve handle arranged on the valve body, an anti-rust assembly is arranged on the valve handle seat, and the anti-rust assembly comprises an oil storage cylinder fixedly installed on the upper surface of the valve handle seat. A limiting disc is fixedly installed on a top barrel body of the oil storage barrel, a dustproof cover is hinged to the side face of the limiting disc through a hinge, a threaded pipe is fixedly installed on a bottom barrel body of the oil storage barrel, a threaded cover is connected to the threaded pipe in a threaded mode, and a transparent window is arranged on the barrel body of the oil storage barrel. An arc-shaped plate is fixedly installed on a cylinder body of the oil storage cylinder, a left guide rod and a right guide rod are fixedly installed between the arc-shaped plate and the bottom face of the limiting disc, and a light-proof shielding plate is slidably connected to the two guide rods. The valve handle can be prevented from rusting, normal operation is facilitated, and use is convenient.

1. The name of the design product: manual plug valve. 2. The use of the design product: the design product is a device for controlling the opening and closing of a pipeline. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The utility model discloses a long-distance high-pressure pump station water hammer eliminating device, and belongs to the field of energy conservation and environmental protection. The device comprises a water suction pool and a water supply main pipe, the water suction pool is connected with a plurality of water pump branch pipelines, the water pump branch pipelines are identical in design, and an electric gate valve is arranged between the water suction pool and a water pump; a pressure sensor, a heavy hammer type slow-closing check valve, a second electric gate valve and a manual gate valve are sequentially arranged between the water outlet of the water pump and the water supply main pipe; the heavy hammer type slow-closing check valve prevents water from flowing back and eliminates the influence of a water hammer; the second electric gate valve is opened when the water pump is started and closed when the water pump stops working; the manual gate valve is in a normally open state and is closed when being overhauled; a safety pressure relief branch pipe is arranged on the water supply main pipe and flows back to the pump room water suction pool. The water hammer eliminating device is simple in structure and convenient to install, damage of the water hammer effect to equipment such as a pipeline, a valve and a water pump can be effectively reduced, the safety and stability of a water supply system can be improved, the frequency of maintenance and equipment replacement is reduced, and the maintenance cost is reduced.

The utility model relates to the technical field of well mouth gate valves, in particular to a novel well mouth gate valve which comprises a valve body, a valve seat is installed in the center of the top end of the outer wall of the valve body, a valve deck is fixed to the top end of the outer wall of the valve seat through a bolt, and a valve plate for sealing a liquid passing groove is arranged in the valve body. Sealing reinforcing parts are arranged in the valve body and located on the two sides of the valve plate. After the valve plate is rotated, hydraulic oil can be conveyed into the oil storage ring through the oil pump, so that the hydraulic telescopic rod pushes the sealing ring mounting plate to move under the action of the hydraulic oil to enable the sealing ring gasket to abut against the two sides of the outer wall of the valve plate, and the sealing effect after the valve plate is closed is improved; and meanwhile, when the gate valve needs to be opened, hydraulic oil can be recycled to enable the hydraulic telescopic rod to contract to control the sealing ring gasket to be separated from the valve plate, in this way, the sealing ring gasket can be prevented from influencing movement of the valve plate, and meanwhile abrasion of the movement of the valve plate to the sealing ring gasket can be reduced.

The utility model provides a kind of electric flat gate valve, belong to flat gate valve technical field, including gate valve lower casing and gate valve upper casing, gate valve lower casing is located at the bottom of gate valve upper casing, the both sides of gate valve lower casing are provided with flange pipe fittings, sliding assembly is slidably arranged in the inside of gate valve lower casing and gate valve upper casing, sliding assembly includes flat gate that is slidably arranged in the inside of gate valve lower casing and gate valve upper casing, cleaning assembly is arranged in the both sides of inner wall of gate valve lower casing, cleaning assembly includes recess that is arranged on the both sides of inner wall, cleaning block is arranged in recess;The utility model can automatically scrape off adhering impurities in the lifting process of flat gate, realize self-cleaning.

Embodiments disclosed herein relate to a knife gate valve having a valve body defining a bore, and a gate plate for the bore, the knife gate valve comprising: an inner surface of the valve body; an annular groove entirely defined within the inner surface; the step-shaped surface and the first locking surface are limited in the annular groove, and the first locking surface is adjacent to and connected with the step-shaped surface; the elastic valve seat ring is inserted into the annular groove, the elastic valve seat ring is provided with a wedge-shaped part, the wedge-shaped part defines an inclined surface, and the wedge-shaped part is mounted across the stepped surface of the annular groove; the second locking surface is limited on the elastic valve seat, and the second locking surface is adjacent to and connected with the inclined surface; and further wherein the first locking surface and the second locking surface are configured to abut against each other.

The utility model belongs to the technical field of vacuum coating, and particularly relates to a vacuum coating cavity which comprises a first cavity, a second cavity and a third cavity, the process chamber is arranged at the front end of the first chamber and communicates with the first chamber, a partition plate is arranged at an inlet of the process chamber, a sealing piece is arranged on the circumferential side wall of the partition plate and suitable for sealing the circumferential side wall of the partition plate and the inner wall of the process chamber, and connecting supporting plates are arranged at the top and the bottom of the partition plate correspondingly; the connecting support plate is detachably connected with the process chamber; a penetrating opening is formed in the partition plate, a valve plate is rotationally arranged in the process chamber, and the valve plate is arranged on the side, close to the first chamber, of the partition plate; when the valve plate rotates to the vertical state, the valve plate is attached to the partition plate so as to close the penetrating opening. The rotatable valve plate is arranged on the side, close to the first cavity, of the partition plate to complete opening / closing of the penetrating opening, and opening / closing of the cavities can be completed without independently arranging a gate valve assembly.

This application relates to a welding device for a double-walled oil tank anti-overflow gate valve. The welding device has a support plate rotatably connected to a worktable. The valve body and flange ring are coaxially mounted on the top surface of the worktable. The top surface of the support plate has multiple first sliding grooves, spaced apart around the central axis of the support plate. Multiple first locking components are provided, each corresponding to one of the first sliding grooves. Each first locking component includes a first locking rod, which reciprocates within its corresponding first sliding groove to abut against the outer side of the flange ring. Second locking components include multiple second locking rods, each corresponding to one of the first sliding grooves. The second locking rods reciprocate within their respective first sliding grooves and abut against the inner wall of the valve body. This application can meet high-precision welding requirements.

This invention relates to the field of high-pressure mineralization reaction experimental equipment technology, and discloses a dual-chamber structure reaction device and method for continuous sampling. The device includes a reaction chamber, a sampling chamber, a core pushing system, a liquid injection system, a gas injection system, a liquid phase acquisition system, a gas phase acquisition system, a monitoring system, and a control system. The sampling chamber is located at the top of the reaction chamber. A gate valve is installed between the sampling chamber and the reaction chamber. The core pushing system is vertically and vertically mounted inside the reaction chamber, used to hold the core to be reacted and push the core to the sampling chamber. The liquid injection system, gas injection system, liquid phase acquisition system, gas phase acquisition system, and monitoring system are all connected to the reaction chamber. The control system is electrically connected to the core pushing system, liquid injection system, gas injection system, liquid phase acquisition system, gas phase acquisition system, and monitoring system to maintain the pressure value within the reaction chamber. This application addresses the sampling needs of the gas, liquid, and solid phases, adapting to the requirements of high-pressure mineralization reaction experiments and improving sampling reliability and data accuracy.