2039 results about "Gate valve" patented technology

The utility model discloses a vacuum cooling temporary storage mechanism and thin film deposition equipment, and relates to the technical field of semiconductor equipment. The vacuum cooling temporary storage mechanism comprises a temporary storage bin, a sealing gate valve, a storage box, a vacuumizing assembly and a cooling module. The vacuumizing assembly is connected with the temporary storage bin, the storage box is arranged in the temporary storage bin, the temporary storage bin is provided with a conveying opening, the sealing gate valve is used for closing or opening the conveying opening, the cooling module is connected with the temporary storage bin, and the cooling module is used for cooling the temporary storage bin. Compared with the prior art, the vacuum cooling temporary storage mechanism provided by the utility model adopts the vacuumizing assembly connected with the temporary storage bin and the sealing gate valve mounted in the temporary storage bin, so that the cleanliness of the temporary storage bin can be ensured, the temporary storage bin is prevented from being influenced by the transmission bin, gas in the temporary storage bin can be directly pumped out, and the service life of the temporary storage bin is prolonged. And heat emitted by the wafer is rapidly taken away, and the cooling efficiency is high.

The invention relates to the technical field of gate valve equipment, and discloses a meter-front copper gate valve with a magnetic lockable structure, which comprises a valve body which is used as a basic component of the whole device and is used for assembling and bearing all mechanisms and subordinate lower structural parts; the valve basic mechanism is arranged on the valve body and used for being matched with other structural parts to execute basic operation treatment of the valve; and the locking protection mechanism is arranged at the upper part of the valve body. By adding and arranging an extreme protection mechanism, under the extreme working condition, a thermosensitive alloy sleeve of the mechanism expands in a high-temperature environment to push a locking pin rod to be inserted into a valve rod locking hole, a valve rod is mechanically locked, and fluid leakage caused by high-temperature damage of the valve under the extreme conditions such as a fire disaster is prevented; after the temperature is reduced, the pin rod is automatically reset, locking is relieved, follow-up normal operation is not affected, the valve body can be actively protected under the extreme working condition through the treatment mode, and the accident risk is prevented from being increased due to valve failure.

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.

The utility model discloses a gate valve with improved bidirectional sealing performance, which comprises a valve body, baffle rings are symmetrically arranged in the valve body, the outer side surfaces of the baffle rings are fixedly connected with the inner wall of the valve body, a gate plate is arranged on the inner sides of the baffle rings, an auxiliary pipeline is arranged above the gate plate, and the auxiliary pipeline is fixedly connected with the side surface of the valve body. Annular grooves are symmetrically formed in the surfaces of the two sides of the gate plate, sealing rings are fixedly connected to the surfaces of the inner sides of the annular grooves, a guide pipe is fixedly connected to the upper surface of the gate plate, the lower end of the guide pipe communicates with the annular grooves, the upper end of the guide pipe penetrates through the auxiliary pipeline to be connected with a hydraulic mechanism, and a driving mechanism is installed at the upper end of the auxiliary pipeline. The connecting flange is fixedly connected with the valve body. The problem that in the using process of a traditional gate valve, abrasion of a sealing ring on the gate plate sealing face is more and more serious is solved, the situation that the gate valve leaks due to the fact that the sealing performance of the gate plate is reduced after long-time use is avoided, the using sealing performance of the gate valve is improved, and the service life of the gate valve and the gate plate is prolonged.

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 invention relates to the technical field of chip welding, and discloses a continuous vacuum welding device for an IGBT (Insulated Gate Bipolar Translator) chip, which comprises a working channel formed by connecting a plurality of working furnaces in series, vacuum gate valves used for sealing the space are installed at an inlet and an outlet of the working channel and the butt joint position of every two adjacent working furnaces, and the conveying mechanism is used for conveying product carriers, is installed in the working furnaces and comprises two conveying assemblies symmetrically distributed on the two sides of the axis of the working channel; the two ends of the product carrier are erected on the conveying parts of the two conveying assemblies correspondingly. The preheating furnace, the welding furnace and the cooling furnace are connected in series to form the working channel, and the vacuum gate valves are mounted at the inlets and the outlets of the cavities, so that the adjacent cavities are independently sealed, the oxygen content of each cavity is controlled in an extremely low range, the ceramic copper-clad plate is prevented from being oxidized, the welding void rate is reduced, and the interface bonding strength is improved.

The utility model belongs to the technical field of gate valves, and discloses a high-pressure gate valve. The high-pressure gate valve comprises a valve body, a gate plate and a pilot sealing assembly. Wherein the valve body is provided with a medium channel, the flashboard is arranged in the valve body in a sliding and penetrating mode, a cavity is formed in the flashboard, the flashboard is provided with a pilot gate and a conduction gate, the cavity is communicated with the pilot gate, the flashboard is provided with a first position and a second position relative to the valve body, and when the flashboard is located at the first position, the pilot gate conducts the medium channel in advance; when the gate plate slides from the first position to the second position, the breakover gate communicates with the medium channel, the circulation inner diameter of the pilot gate is smaller than that of the breakover gate, the pilot sealing assembly comprises a pilot valve plate and a buffer valve seat, the buffer valve seat is fixedly contained in the cavity and communicates with the pilot gate, and the pilot valve plate can slide relative to the buffer valve seat. Therefore, the pilot gate is blocked or conducted. According to the high-pressure gate valve, the opening torque can be reduced, and the sealing performance of the high-pressure gate valve is improved.

The invention discloses a compact accelerator extremely-high vacuum system and an implementation method thereof. The compact accelerator extremely-high vacuum system comprises a dipole iron vacuum chamber, a BUMP iron vacuum chamber, a BPM cavity, a vacuum pump chamber and a quadrupole iron vacuum chamber which are sequentially connected to form a beam main line. A plurality of non-evaporable getter sheets are arranged in the dipole iron vacuum chamber and the quadrupole iron vacuum chamber in an array manner and are used for extracting active gas in a beam main line to obtain extremely high vacuum; a vacuum measuring gauge tube, a sputtering ion pump, a molecular pump and a gate valve are installed on the vacuum pump chamber, the vacuum measuring gauge tube is used for measuring the vacuum degree in the beam main line, the sputtering ion pump is used for extracting argon and methane in the beam main line and conducting baking, and the molecular pump is used for rough extraction of the beam main line and exhaust in the baking process; the gate valve is used for separating the molecular pump from the beam main line. According to the invention, hydrogen, carbon monoxide and other active gases in the system can be extracted under the condition that a titanium sublimation pump cannot be installed due to insufficient space, so that extremely high vacuum can be obtained.

The utility model discloses a gate valve rod protection structure, and particularly relates to the technical field of gate valves, the gate valve rod protection structure comprises a valve body and a valve rod body, the valve rod body is in threaded connection with the top surface of the valve body, a protection sleeve is fixedly installed on the top surface of the valve body, a rotating sleeve is movably connected in the protection sleeve, and the rotating sleeve is fixedly connected with the valve rod body. When the valve rod is used, the operation is simple, the exposed threads of the valve rod body can be hidden through the protective sleeve and the rotating sleeve, the joint between the protective sleeve and the rotating sleeve is sealed through the annular air bag, the sealing effect is good, the sealing effect is good, the sealing effect is good, and the sealing effect is good. Therefore, outside dust, moisture and various corrosive media are isolated and effectively prevented from invading the threaded area of the valve rod body, and the service life of the valve rod body is prolonged conveniently.

The utility model discloses an automatic vacuum degree regulating system for high-vacuum coating equipment, which comprises a vacuum cavity, an automatic vacuum regulating valve, a high-vacuum gate valve and a high-vacuum molecular pump, the high-vacuum molecular pump is fixed with the high-vacuum gate valve, the high-vacuum gate valve is fixed with the automatic vacuum regulating valve through a vacuum flange, and the high-vacuum molecular pump is fixed with the automatic vacuum regulating valve through a vacuum flange. The vacuum automatic regulating valve is connected with the vacuum cavity; and the flow fine adjustment assembly is composed of a plurality of sets of flow components and a driving component, and the multiple sets of flow components are symmetrically arranged on the vacuum automatic adjusting valve. According to the high-vacuum molecular pump, through the design of the automatic vacuum regulating valve, the opening and closing angle of the regulating baffle inside the regulating valve body is regulated, so that the pumping speed of the high-vacuum molecular pump is reduced, the vacuum degree is accurately controlled, and meanwhile, through the design of the flow fine-tuning assembly, the automatic vacuum regulating valve can be assisted; and the precise control of the vacuum degree is further improved.

The aircraft underwater launching simulation experiment system comprises a water tank module, a launching module, a bullet changing module, a film changing module, a recycling module, a pneumatic knife gate valve module and a control cabinet. The launching module is arranged below the water tank module, the bullet changing module is arranged between the launching module and the water tank module, the film changing module is arranged in the water tank module and located above a bullet inlet hole of the water tank module, the recycling module is arranged on the upper portion in the water tank module, and the pneumatic knife gate valve module is arranged at the bottom of the water tank module. Through cooperation of the water tank module, the launching module, the bomb replacing module, the membrane replacing module, the recycling module and the pneumatic knife gate valve module, continuous launching of experimental bombs in an aircraft underwater launching simulation experiment is achieved, through cooperation of the control cabinet, tedious operation of bomb replacing is relieved, and the test efficiency is improved; the influence of water in an incidence pipeline on the launching state of the projectile body caused by the fact that the diaphragm is placed on the lower portion of the water tank is reduced.

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.

A cooling-tower performance testing device, comprising: a first barrier member (11) arranged on a water output pipeline of an RIS-RHR heat exchanger (21); a heat-source obtaining assembly (12), which has a first end mechanically connected between the first barrier member (11) and a water outlet of the RIS-RHR heat exchanger (21) and a second end mechanically connected to an EHR gate valve (31); and a second barrier member (13), which is arranged on a pipeline connected between a water outlet of a PTR heat exchanger (51) and a hot-side water inlet of an ECS heat exchanger (41). The device enables an ECS to obtain a stable heat source from one loop, and supplies heat to the ECS heat exchanger (41), and a heat source is thus provided for carrying out a cooling-tower performance test, without temporarily laying a large number of pipelines, thereby omitting a large amount of pipeline disassembly and site restoration work, and also effectively shortening a test duration and reducing test costs. Further provided is a cooling-tower performance testing method.

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.

Embodiments of the present application provide a turbocharger control method, device, equipment and readable storage medium. The method comprises: obtaining a running condition corresponding to a vehicle; determining a surge line corresponding to a turbocharger, the surge line being used to represent airflow oscillation phenomenon of gas along the axial direction of the compressor; in the case that the running condition and the surge line meet a preset relationship, adjusting a first opening angle of a waste gate valve, or adjusting a second opening angle of a vehicle power pedal. The purpose of making the running condition of the vehicle away from the surge line is achieved, and then the turbocharger is in a normal working state, avoiding the turbocharger emitting high-frequency Hiss noise to bring negative driving experience to the driver.

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.

A gate valve monitor is described. In one broad form, the gate valve monitor includes an actuator housed within a housing. The housing may be a valve body or a separate component. In one embodiment, the gate valve monitor includes one or more switches and actuators housed within a housing sized to allow passage of the gate valve stem. The actuator operates through the movement of the gate valve stem to trigger the one or more switches. A sluice valve including the sluice valve monitor, a method of monitoring a sluice valve, a method of manufacturing a sluice valve monitor, and a kit for monitoring a sluice valve are also described.

The invention relates to the technical field of gate valves, in particular to a double-disc gate valve with an improved sealing structure, which comprises a valve body, one side of a valve cavity on the valve body is an upstream side, the other side of the valve cavity is a downstream side, a valve cover is arranged at the top of the valve body, and an upper sealing cover is arranged at the joint of the valve body and the interior of the valve cover. A connecting nut is fixedly installed at the top of the valve cover, a valve rod is in threaded connection with the interior of the connecting nut, and the bottom of the valve rod is provided with an opening and closing assembly comprising a side pressing block and two sets of connecting bases connected with each other; the opening and closing assembly is arranged, the first gate plate is matched with the first valve seat, the second gate plate is matched with the second valve seat, double-side quadruple sealing can be achieved when the valve is closed, the sealing performance is improved, meanwhile, the connecting seat can be pressed through the side pressing block during sealing so as to enhance the sealing performance, and the sealing performance is improved. The hook structures formed between the side pressing blocks and the connecting bases can assist the connecting bases on the two sides to be close to the middle position, the torque needed when the valve is opened is reduced, and the service life of the gate is prolonged.

The invention discloses a flat gate valve performance detection device, and belongs to the technical field of gate valve detection devices, the flat gate valve performance detection device comprises a detection table, the top of the detection table is provided with a caliber detection mechanism, and the bottom of the detection table is provided with an air tightness auxiliary detection mechanism; according to the invention, through the arranged aperture detection mechanism, the multi-station alternate conveying detection of the flat gate valve body is realized, the detection efficiency and the automation level are significantly improved, and through a mechanical feedback structure formed by the extrusion plate, the reset spring, the push type trigger switch and other components, the detection precision can be greatly improved on the premise of no complex sensor. Structural elasticity changes are matched with displacement triggering, structural abnormity of the gate valve to be detected is accurately judged, sound-light alarm is given out, dependence of a detection system on circuit stability is reduced, meanwhile, the anti-interference capacity and the capacity of adapting to severe industrial environments of the device are enhanced, alarm response is fast, structural configuration is stable, and batched flat valve body rotary detection is facilitated.

The utility model discloses a vacuum gate valve of a friction-free structure, which comprises a valve body, a valve core, a valve core and a valve core, the elastic valve plate assembly is arranged in the valve body, at least four first inner grooves are formed in the elastic valve plate assembly, and the first inner grooves are formed at intervals; one end of the valve rod is movably connected with the elastic valve plate assembly, at least four second inner grooves are formed in the valve rod, and the second inner grooves correspond to the first inner grooves one to one; the at least four rolling pieces are arranged at the first inner groove and the second inner groove in a one-to-one manner and are arranged between the elastic valve plate assembly and the valve rod; therefore, the technical problems that the valve plate and the valve body are abraded due to friction, the service life is shortened, and particles generated by abrasion pollute a vacuum system are solved.

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 application discloses an oil tank anti-overflow gate valve welding device and relates to the technical field of welding devices.The application comprises a machining table, a welding gun body is fixed on one side of the top of the machining table through a flexible support, a gap device is arranged on the top of the machining table, a flange fixing assembly is arranged in the middle of the top of the machining table, the gap device comprises a fixing rod, the fixing rod is fixed on the top of the machining table, and a back-shaped frame is fixed on the top of the fixing rod.The gap device is arranged, so that the flange fixing assembly, the arc-shaped sliding plate, the sliding arc plate, the first screw rod, the first screw block, the back-shaped frame, the fixed arc plate and the hinged rod are cooperatively driven to insert four telescopic inclined surface columns into the gap between the flange and the anti-overflow gate valve body, the four telescopic inclined surface columns can keep the gap between the flange and the anti-overflow gate valve body equal, so that the welding area between the anti-overflow gate valve body and the flange is uniform, and the welding metal can uniformly fill the whole gap.

The utility model relates to the technical field of oil industry gate valves, in particular to an oil industry gate valve with a wear-resistant strengthening structure, which comprises a valve casing, delivery pipes are welded on two sides of the valve casing, a blocking component is arranged on the inner side of the valve casing, a support rod is fixedly connected to the top end of the valve casing, and an electric cylinder is fixedly connected to the top end of the support rod through a mounting seat. The blocking assembly comprises a sealing ring, the sealing ring is fixedly bonded to the inner side of the valve shell, a gate plate is embedded in the inner side of the sealing ring, a water cavity is formed in the top of the inner side of the valve shell, mounting grooves are formed in the two sides of the bottom end of the water cavity, protection mechanisms are fixedly connected to the inner sides of the mounting grooves, and a filter screen is fixedly connected to the middle of the inner side of the conveying pipe. The filter screen, the inner side of the valve shell and the flashboard can be washed at the same time through water flow, in this way, the cleaning difficulty is lowered, the cleaning efficiency is improved, and the service life of the flashboard is prolonged.

This application relates to the field of gate valve technology, and particularly to a gate valve control method and a gate valve. The gate valve includes: a valve body having a conveying channel; a valve plate, partially located within the conveying channel and movably mounted on the valve body; a drive device mounted on the valve body, with its power output end connected to the valve plate; a flow acquisition device located within the conveying channel and mounted on the valve body; and an impurity detection device located within the conveying channel and near its input end, and mounted on the valve body. The drive device is used to drive the valve plate to either cut off or not cut off the conveying channel, the flow acquisition device is used to acquire the flow rate within the conveying channel, and the impurity detection device is used to detect impurities at the input end of the conveying channel. The gate valve control method and gate valve provided in this application can improve the problem of insufficient water supply or idle and wasted water resources caused by fluctuations in water demand from water users in water supply networks.

The invention relates to the technical field of knife gate valves, and discloses a bidirectional sealing two-piece type knife gate valve which comprises a butt joint assembly used for being in butt joint with a pipeline, a sealing assembly used for achieving a sealing effect is arranged at the upper end of the butt joint assembly, and a knife switch blocking mechanism used for blocking internal circulation and transmission of the butt joint assembly is longitudinally and movably arranged in the butt joint assembly. A driving mechanism drives a transmission shaft to rotate and transmit to a non-contact magnetic coupling transmission mechanism, a driving coupling sleeve rotates to form magnetic coupling, a transmission permanent magnet drives a transmission coupling shaft to rotate synchronously, and the power is transmitted to a transmission column in a cleaning assembly through a three-section universal joint, so that a scraper continuously cleans the surface of a positioning disc, and deposit accumulation is prevented; smooth opening and closing of the knife switch are guaranteed, the equipment operation period is remarkably prolonged, the maintenance frequency is reduced, the whole system integrates opening and closing, sealing and cleaning, power transmission is efficient, contact and abrasion are avoided, and the problems of deposition and attachment, opening and closing clamping stagnation, maintenance difficulty and the like of a traditional knife gate valve are effectively solved.

The invention relates to the technical field of gate valves, in particular to a pneumatic double-parallel gate valve which comprises a valve body, a pneumatic equipment body is fixedly mounted on the outer wall of the valve body, a connecting pipe is fixedly mounted on the outer wall of the bottom of the valve body, and a top plate is fixedly connected to the upper portion of the inner wall of the connecting pipe. An opening mechanism is arranged in the connecting pipe, a driving mechanism is arranged below the opening mechanism, and a linkage mechanism is arranged in the driving mechanism. The gate plate body continuously rotates in the opening or closing process, all-directional and dynamic self-cleaning can be conducted on the sealing face of the gate plate body, impurities attached to the sealing face are effectively removed through the self-cleaning mode, the problem that sealing is not tight due to the fact that the sealing face is not clean is solved, the service life of the gate plate body is prolonged, and the maintenance cost is reduced; the situation that the flashboard body can only rotate by means of water pressure is avoided, and the situation that the flashboard body cannot be driven to achieve automation under the working condition of low water pressure is correspondingly prevented.

The invention provides a gate valve flow prediction method based on sensing data and related equipment, and relates to the technical field of gate valve flow prediction. The method comprises the following steps: acquiring sensor data at a gate valve in the greenhouse; carrying out filtering processing on the acquired sensor data; based on the sensor data at the current moment, estimating a sensor data drift amount at the current moment by using a sensor drift model; performing drift compensation on the sensor data at the current moment by using the sensor data drift amount; based on the compensated sensor data, utilizing a prediction model to carry out flow prediction; and periodically updating the sensor drift model and the prediction model. According to the gate valve flow prediction method based on the sensing data, the problem that long-term operation precision is difficult to guarantee due to the fact that an existing method has defects in the aspects of sensor drifting and environmental interference is solved, the effect of maintaining long-term high-precision prediction on the gate valve flow is achieved, and stable growth of crops is guaranteed.

The invention relates to the technical field of flat gate valves, and discloses a high-sealing-performance flat gate valve which comprises a valve body, a flow channel is formed in the valve body in a penetrating mode, valve seats are symmetrically arranged in the center of the valve body, sealing rings are arranged between the valve seats and the valve body, and a valve plate is movably arranged between the two valve seats. The valve plates comprise the first valve plate and the second valve plate which are arranged in an inserted mode, a variable distance is arranged between the first valve plate and the second valve plate, an elastic piece and an expansion assembly are arranged between the first valve plate and the second valve plate, and the elastic piece is used for keeping the trend that the first valve plate and the second valve plate get close to each other in the lifting moving process. The expansion assembly is used for driving the first valve plate and the second valve plate to expand towards the two sides after the first valve plate and the second valve plate move in place. The valve plate comprises the first valve plate body and the second valve plate body which are combined, the distance between the first valve plate body and the second valve plate body is adjustable, and in the moving process of the valve plate, the sealing performance of the valve is prevented from being affected by structural damage; and after the valve plate and the valve seat are moved in place after being opened and closed, the pressing force of the valve plate gap and the valve seat on the valve plate is increased, so that the valve plate and the valve seat are pressed more tightly.

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.