4773 results about "Gate valve" patented technology

The invention discloses a use monitoring method and system for a knife gate valve, and relates to the technical field of knife gate valve monitoring, and the method comprises the steps: integrating a multi-mode sensor array at the root of a valve rod of the knife gate valve, an adjacent region of a sealing surface and in a valve cavity flow channel, and collecting multi-source signals in real time; performing dynamic fusion processing on the multi-source signal, and determining a feature extraction algorithm combination based on the current valve rod temperature and historical working condition data to extract a sealing surface damage feature, a transmission chain wear feature and a particle impact feature; constructing a dynamic anomaly judgment model, updating a clustering boundary of a vibration and torque characteristic space in real time, and performing decoupling diagnosis on a sealing surface dry friction risk, thread clearance expansion and gear wear in combination with time-frequency domain fluctuation analysis of a gear meshing frequency harmonic attenuation rate and an angular acceleration; and generating a three-level maintenance strategy according to the diagnosis result, dynamically adjusting the output torque of the execution mechanism and optimizing the switching frequency of the valve.

In one instance, a dynamic slab gate valve is disclosed for use in controlling fluid flow through pipelines and other tubulars, wherein the dynamic slab gate valve has a dynamic seat assembly and a dynamic skirt assembly. The dynamic seat assembly is urged toward a gate of the dynamic slab gate valve by an energizer to maintain a seal between a seat and the gate. The dynamic skirt assembly is urged toward the gate of the dynamic slab gate valve by an energizer to maintain a seal with the gate. Improved seals are provided. Other valves are disclosed herein.

In one instance, a dynamic slab gate valve includes a valve body having a through-bore formed therethrough; a round gate cavity formed within the valve body and orthogonal to and bisecting the though-bore; and at least two retrofit slabs located within the round gate cavity. The retrofit slabs form a slab gate cavity having two parallel planar sides. A slab gate is disposed within the slab gate cavity. In another instance, a method for retrofitting a round gate valve includes the steps of removing a round gate from a round gate cavity of the round gate valve; installing a plurality of retrofit slabs within the round gate cavity to form a slab gate cavity; and installing a slab gate within the slab gate cavity. Other instances include seat assemblies and dynamic skirt assemblies.

In one instance, a dynamic slab gate valve includes a valve body having a through-bore formed therethrough; a round gate cavity formed within the valve body and orthogonal to and bisecting the though-bore; and at least two retrofit slabs located within the round gate cavity. The retrofit slabs form a slab gate cavity having two parallel planar sides. A slab gate is disposed within the slab gate cavity. In another instance, a method for retrofitting a round gate valve includes the steps of removing a round gate from a round gate cavity of the round gate valve; installing a plurality of retrofit slabs within the round gate cavity to form a slab gate cavity; and installing a slab gate within the slab gate cavity. Other instances include seat assemblies and dynamic skirt assemblies.

The invention belongs to the technical field of power robots. According to the transformer oil sample collection robot system and method based on the multi-degree-of-freedom mechanical arm, a robot body carries an operation tool integrated board and the multi-degree-of-freedom mechanical arm, and the operation tool integrated board is used for carrying an oil taking gate valve tool and an oil taking butt joint tool; the oil taking tank comprises a rotary door and a rotary door valve connected with the rotary door, a plurality of through holes are formed in the rotary door, and the through holes are used for being opposite to the oil outlet valve and the oil outlet when the rotary door rotates to a set position; the oil taking gate valve tool is used for operating the rotary gate valve and the oil outlet valve to open an oil way under the driving of the multi-degree-of-freedom mechanical arm, and the oil taking butt joint tool is used for being connected with the oil outlet under the driving of the multi-degree-of-freedom mechanical arm; according to the invention, transformer oil sample collection operation can be carried out by virtue of the robot without approaching a person, so that manpower is saved, and the operation quality, the operation efficiency and the operation safety are improved.

The invention belongs to the technical field of gas production wellhead devices, and particularly relates to a 175MPa gas production wellhead device which comprises a gas production tree assembly and a tubing head assembly, the gas production tree assembly comprises a gate valve body, the gate valve body comprises a driver and a hand lever, and a protection assembly is installed between the driver and the hand lever; the protection assembly comprises a connecting shaft, a hand lever, a driver, a transmission sleeve, a steel rope, a high-strength spring, a transmission ring, a connecting block, a rotating groove and a transmission column. When the driver operates, the driver drives the connecting shaft to rotate, the connecting shaft rotates to drive the transmission column on the transmission ring to rotate synchronously, after the transmission column is in contact with the steel rope, the connecting shaft drives the steel rope to twist through the transmission column, and at the moment, the transmission sleeve moves towards the direction of the connecting shaft, so that the transmission sleeve is separated from the hand lever; and the phenomenon that the valve cannot be normally opened due to physical interference between the hand lever and the output shaft of the driver caused by mistaken rotation of the hand lever in the operation process of the driver is avoided.

The invention discloses a gate valve automatic pressure relief control system and a gate valve, and belongs to the technical field of valve safety control systems.The gate valve automatic pressure relief control system comprises a valve assembly which comprises a valve body and a valve element, the valve element is installed in the valve body, and a pressure relief hole is formed in the valve element; the pressure relief assembly comprises a sealing column, a pressure bearing piece and a driving piece, the sealing column is arranged in the valve element in a sliding mode, the driving piece and the pressure bearing piece are both installed on the valve element, one end of the driving piece is connected with the sealing column and applies acting force for blocking the pressure relief hole to the sealing column, and one end of the pressure bearing piece bears fluid pressure of the inflow end of the valve element; the pressure sensor is used for monitoring the fluid pressure of the inflow end of the gate valve, once the fluid pressure exceeds the set safety pressure, hydraulic oil in the hydraulic pipe is discharged through the hydraulic system, the pressure bearing piece drives the sealing column to slide under the action of the fluid pressure, the flow guide hole communicates with the pressure relief hole, and automatic pressure relief is achieved.

In one instance, a dynamic slab gate valve is disclosed for use in controlling fluid flow through pipelines and other tubulars, wherein the dynamic slab gate valve has a dynamic seat assembly and a dynamic skirt assembly. The dynamic seat assembly is urged toward a gate of the dynamic slab gate valve by an energizer to maintain a seal between a seat and the gate. The dynamic skirt assembly is urged toward the gate of the dynamic slab gate valve by an energizer to maintain a seal with the gate. Improved seals are provided. Other valves are disclosed herein.

The invention provides a bipolar splayed magnetron sputtering machine table which comprises a supporting rack, a first main cavity module, a second main cavity module, a transfer cache cavity module, a plurality of processing cavity modules and a feeding and discharging cavity module, the first main cavity module and the second main cavity module are symmetrically arranged, rapid replacement is achieved through a movable conveying rack, and process cavities can be freely combined according to process requirements; diversified process requirements are met; the inclined gate valve design reduces the occupied area, enhances the stress uniformity of the structure and prolongs the service life of equipment; the transfer buffer chamber provides cooling and temporary storage functions, isolates the heat influence of front and rear processes, and ensures the stability of a material treatment environment; the medium flow and the mixing proportion are adjusted in real time through the branch pipelines and the intelligent distribution unit, the process parameters of all the cavities are accurately matched, and energy consumption is reduced.

The invention relates to the technical field of oil exploitation equipment, in particular to a throttling kill manifold with a sand prevention structure, which comprises a first four-way joint and second four-way joints communicated with two sides of the first four-way joint through confluence branch pipes. One side of the first four-way joint is communicated with a main blowout pipeline, and the same side of the second four-way joint on the main blowout pipeline is communicated with a throttling pipeline; a sand prevention structure is arranged in the second four-way joint, a cleaning assembly for cleaning the sand prevention structure is arranged in the confluence branch pipe, a sand collection cylinder assembly is installed on the sand prevention structure, and an overhaul gate valve is installed on the confluence branch pipe. According to the sand prevention structure, fluid entering the throttling pipeline is filtered, the sand prevention structure is cleaned through the cleaning assembly, and the filtering effect of the sand prevention structure is guaranteed.

A self-heat dissipation gate valve, comprising a valve body (1), a valve cover (2), a gate plate (3), and a valve rod (4). The valve body comprises a channel (11) and a valve seat (12) located on the channel. The valve cover is fixedly connected to the valve body, and a plurality of cooling fins (21) are arranged at intervals on the outer side wall of the valve cover. The gate plate is located in an inner cavity of the valve body. One end of the valve rod is connected to the gate plate, and the other end of the valve rod extends upwards until the other end of the valve rod partially extends out of the valve cover. The gate plate is configured to be driven by the valve rod to move to be mated with the valve seat to block the channel or is configured to be driven by the valve rod to move in a direction away from the valve seat to unblock the channel. During use, the high-temperature medium in the channel of the valve body can transfer heat to the valve body and the valve cover, and the plurality of cooling fins arranged on the valve cover can diffuse heat into the surrounding environment, so that the working performance of the gate valve is prevented from being affected by the excessively high temperature of the gate valve.

The invention belongs to the technical field of valve maintenance, and particularly relates to a lifting device for a leakage guide ring of a nuclear island gate valve. The upper end of the supporting screw rod is arranged on a valve yoke frame, the lower end of the supporting screw rod is arranged on the drawing support, the drawing support is installed on a valve rod, the half-and-half type lifting nut is installed at the position of a threaded sleeve at the bottom end of the drawing support in a spliced mode and connected with the threaded sleeve through the set screw, and the half-and-half type lifting loop is connected to the lower end of the lifting nut in a hung mode. The lower end of the lifting screw rod is screwed into the original lifting hole and the new lifting hole of the leakage guiding ring, the height of the lifting loop is adjusted in a rotating mode, the upper end of the lifting screw rod is arranged in a screw hole of the lifting loop and is screwed and fixed through a nut, and the operating handle and the rotation preventing handle are arranged in the lifting nut and operating holes in the periphery of the lifting loop respectively. And the drawing bracket is fixed by connecting the original bolt hole of the valve with the supporting screw rod. On the premise of fully considering the limited operation space, the leakage guiding ring is efficiently detached, meanwhile, the complete effect of the leakage guiding ring is guaranteed, and the leakage guiding ring can be repeatedly used.

The invention belongs to the technical field of gate valves, and particularly relates to a scouring-resistant and corrosion-resistant gate valve which comprises a valve body, a valve cover is fixedly mounted on the valve body, a control component is arranged in the valve cover and controls a valve rod to rotate in the valve cover, the lower end of the valve rod is in threaded connection with a gate plate, and the gate plate slides in the valve body and the valve cover. The supporting component is arranged on the outer side of the valve body, the valve rod is controlled to rotate through the control component, the valve rod drives the gate plate to ascend or descend, then the gate valve is opened or closed, fluid is controlled to be conducted or blocked, and a ceramic sealing face is arranged at the joint of the interior of the valve body and the gate plate and has a certain corrosion-resistant effect. The filtering part arranged in the valve body can intercept and filter impurities in fluid, the corrosion resistance of the gate valve is further improved, in addition, the filtering part has the effect of reducing the flow speed of the fluid, impact of the fluid on the gate plate is reduced, and the valve body can be fixed to the ground or a building through the supporting part arranged on the outer side of the valve body. And the pressure of the gate valve on the pipeline is reduced.

The utility model discloses a self-cleaning ore pulp knife gate valve, which relates to the technical field of valves, and comprises a valve body, a valve plate, a valve rod and a driving mechanism, the valve body is provided with a medium flow channel, the valve plate is inserted in the medium flow channel, the upper end of the valve body is provided with a through groove, the upper end of the valve plate penetrates through the through groove and is connected with the valve rod, the upper end of the valve rod is connected with the driving mechanism, and the valve rod is connected with the driving mechanism. A valve seat assembly is arranged in the medium flow channel and comprises an elastic sealing ring and an elastic annular scraper, the section of the front end of the elastic sealing ring and the section of the front end of the elastic annular scraper are in an arc shape and extend in the opposite directions, and the elastic sealing ring is in sealing fit with the valve plate. When the valve plate moves up and down, the elastic annular scraper can scrape silt, particulate matter and the like attached to the surface of the valve plate, the valve plate is kept clean, the service life of the valve is prolonged, the elastic sealing ring conducts elastic sealing compensation on the sealing face, the sealing face and the valve plate are kept sealed all the time, and the sealing reliability of the valve is guaranteed.

A cam-driven valve system comprises a valve body designed to define a multitude of fluid channels and support an array of sliding valves within those channels, thereby controlling the fluid flow. The system includes a multitude of cams mounted on a camshaft. The camshaft is arranged such that each cam is associated with a corresponding sliding valve. Rotation of the camshaft causes the valves to be actuated via the cams. The cams on the camshaft are shaped and sized differently.

The utility model provides a self-positioning and antifouling flat gate valve which comprises a valve body, a valve cavity and a medium channel communicated with the valve cavity are arranged in the valve body. A left valve seat and a right valve seat are arranged at the intersection of the medium channel and the valve cavity, a gate plate is connected between the left valve seat and the right valve seat, the gate plate is matched with the left valve seat and the right valve seat in a sealing mode, and the gate plate is driven by a valve rod to move up and down. A spring hole is formed in the position, in axial contact with the valve body, of the valve seat, and a spring is installed in the spring hole. A positioning block is arranged in the valve body and is coaxial with the gate plate in the longitudinal direction, and a positioning groove matched with the positioning block is formed in the bottom of the gate plate. And the scraping plate is installed in the valve body and arranged at the upper end of the valve seat, and the valve rod is arranged on the scraping plate in a penetrating mode. The spring is arranged at the axial contact position of the valve seat and the valve body, sealing of the valve seat and the gate plate is kept, abrasion to the sealing face of the valve seat is reduced, and the service life of the gate valve is prolonged. And the scraping plate removes dirt on the surface of the gate plate, and the sealing performance of the gate valve is improved.

The invention discloses a flat gate valve, and relates to the technical field of gate valves, in particular to a flat gate valve which comprises a gate valve body, the gate valve body comprises a valve body and a cover plate arranged on the upper surface of the valve body, and a gate plate capable of moving up and down and a graphite packing used for sealing the gate plate are arranged in the valve body. Through the arrangement of an extrusion plate, a drainage channel and a power part, leaked liquid can flow into a gathering cavity from the drainage channel corresponding to the leaked liquid when one position of the graphite packing leaks liquid, and when a gate plate moves up and down, an extrusion rod can be promoted to be inserted into the gathering cavity, so that the liquid collected in the gathering cavity is extruded, and the liquid in the gathering cavity can be collected. And finally, the extrusion plate can press the leakage point of the graphite packing, so that the graphite packing is promoted to expand towards the two sides to improve the sealing performance between the graphite packing and the gate plate, communicated small gaps and holes can be blocked, and therefore the service life of the graphite packing can be prolonged, and meanwhile the sealing performance between the graphite packing and the gate plate can be improved. And the part without the leakage point of the graphite packing cannot be extruded.

The invention provides a gate valve pressure balance control method and device, electronic equipment and a storage medium, and relates to the technical field of gate valve pressure control. The method comprises the steps of monitoring a gate valve control signal and a pressure difference between two sides of a gate valve; calculating a gate valve control signal change rate according to the gate valve control signal, and setting a control signal amplitude threshold value and a change rate threshold value; according to the gate valve control signal change rate, the control signal amplitude threshold value and the change rate threshold value, the gate valve switching action is predicted; based on the predicted gate valve switching action, according to the pressure difference of the two sides of the gate valve, the number of balance channels needing to be opened when the pressure balance is achieved on the two sides of the gate valve is judged; the controller is controlled in advance to open the corresponding number of balance channels to balance the pressure on the two sides of the gate valve. According to the gate valve pressure balance control method, the problem that in the prior art, the response speed is insufficient in the aspect of gate valve pressure balance control is solved, and the effects of remarkably improving the pressure balance response speed and effectively restraining hydraulic impact and vibration are achieved.

The invention relates to the technical field of disaster prevention and reduction of civil engineering, in particular to an aqueduct earthquake resistance and disaster reduction system and method based on digital twinning, and the system comprises a data collection module, an earthquake early warning module, a control system, a gate valve control module, a notification module, a 3D visualization module and an aqueduct post-earthquake evaluation module. Through joint detection of the earthquake early warning module and the slave acquisition module, real-time acquisition of aqueduct operation state information and earthquake early warning information is realized, and before destructive earthquake waves arrive, the water quantity in the aqueduct is adjusted through the control module, so that the earthquake response of the aqueduct is minimum. By inputting monitoring data, manual inspection data and earthquake characteristic information into a control system, constructing an aqueduct digital twin model and performing earthquake response simulation, the safety state of the aqueduct structure after the earthquake can be accurately evaluated, so that a post-earthquake aqueduct structure processing scheme is quickly proposed, and a reference basis is provided for earthquake relief decision making.

The invention relates to the technical field of valves, in particular to an anti-leakage gate valve and a sealing assembly thereof, the sealing assembly comprises a mounting ring, a rigid sealing ring and a first driving assembly, a medium channel is formed in a valve body, a gate plate is arranged in the medium channel in a sliding mode, the gate plate or closes the medium channel, and a valve rod is connected to the valve body. One end of the valve rod is located outside the valve body. The mounting ring and the first driving assembly are arranged, when a rigid sealing ring needs to be replaced, a worker pokes a rotating disc with hands, and through transmission cooperation of a transmission rod, a transmission gear, a transmission gear ring, a tray and a transmission unit, the rigid sealing ring can move in a ring groove along the axis of the ring groove; therefore, the rigid sealing rings on the outermost sides of the two annular grooves can be switched, and due to the fact that workers do not need to disassemble the valve body in the process of replacing the rigid sealing rings, the workload of the workers can be greatly reduced.

The invention discloses a flat gate valve with a good sealing structure, and relates to the technical field of flat gate valves, the top of a valve body is fixedly connected with a control part, the side face of the valve body is fixedly connected with a filtering part, and the side, away from the filtering part, of the valve body is fixedly connected with an anti-blocking part. When the control component is opened and oil or other substances normally pass through the valve body, the contact mechanism pulls the first spring to move on the guide rod through the impact force of the fluid, and when the control component is closed and the impact force of the fluid passing through the valve body is smaller than the tensile force of the first spring, the contact mechanism pulls the first spring to move on the guide rod through the tensile force of the first spring. And when oil or other substances pass through the gate valve, the oil or other substances are partially deposited and remained on the inner side of the gate valve, so that the phenomenon that the valve body is not tightly sealed is avoided.

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 discloses a two-piece type knife-shaped gate valve, relates to the technical field of knife-shaped gate valves, and aims to solve the problem that in the prior art, when a gate plate is attached to a sealing strip, impurities such as silt are retained between the gate plate and the sealing strip, and the sealing effect is affected. The two-piece type knife-shaped gate valve comprises a left valve body and a right valve body fixedly connected with the left valve body through a bolt; a sealing cavity is formed between the right valve body and the left valve body, rectangular medium channels which penetrate through the left valve body and the right valve body and are communicated with the sealing cavity are formed in the outer wall of the left valve body and the outer wall of the right valve body, a first sealing rubber strip is fixedly connected to the inner wall of the sealing cavity, and a rectangular gate plate is arranged in the sealing cavity; the two sides of the gate plate are attached to the inner walls of the two sides of the first sealing rubber strip respectively. The gate valve has the advantage that the probability that the sealing performance of the gate valve is affected due to impurities is reduced.

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 utility model relates to the technical field of detection devices, and discloses a gate valve hardness detection device which comprises two support plates, a base is fixedly mounted between the outer surfaces, close to the top ends, of the two support plates, a circular groove is formed in the upper surface of the base, and a sinking groove is formed in the bottom wall of the circular groove. The rotating disc drives the lead screw to rotate through the limiting block and the limiting groove, the lead screw is in threaded connection with the base and slides downwards, the lead screw drives the push plate to move downwards, at the moment, the push plate drives the gate valve to move downwards to the upper surface of the circular groove, when the rotary knob is rotated reversely, the arc clamping plate is loosened firstly, then the push plate rises from the interior of the sinking groove, and the gate valve is jacked up; at the moment, a tester can easily take out the gate valve with hands, the gate valve is prevented from being buckled with fingers, and the tester can conveniently use the gate valve.

A reduced stroke gate valve is provided. The reduced stroke gate valve provides a predetermined or desired flow area for a given bore size through the gate valve while reducing a total length through which the gate valve strokes between an open position and a closed position. The reduced stroke gate valve includes one or more openings that span a non-circular or non-round area within the gate. The non-circular or non-round shape or distribution of opening(s) in the gate may provide a flow area equivalent to a predetermined flow area for a single circular hole that would otherwise be used for the gate valve application, but with a shape or distribution of opening(s) that provides a reduced stroke length to move the gate valve from the open position to the closed position.

The invention provides a flat gate valve which comprises a gate valve body, a valve cavity is formed in the gate valve body, and valve holes communicating with the valve cavity are formed in the two sides of the gate valve body; the two gate plates are arranged in the valve cavity at intervals; the opening and closing mechanism is connected with the two flashboards; the lifting driving mechanism is connected to the top of the gate valve body, the lifting driving mechanism is connected with the opening and closing mechanism, and the two gate plates can be opened at the positions of the valve holes and block the two valve holes correspondingly when the lifting driving mechanism drives the opening and closing mechanism to descend. The two gate plates can be folded at the positions of the valve holes and are far away from the two valve holes respectively when the lifting driving mechanism drives the opening and folding mechanism to rise. Through the design of the flat gate valve, the weight of the whole machine is reduced, meanwhile, abrasion of the first sealing ring is reduced, and the service life of the first sealing ring is prolonged.

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 invention discloses a paving device for road base construction, and relates to the technical field of road construction, the paving device comprises a mobile vehicle, a paving mechanism mounted at one end of a base of the mobile vehicle, a stock bin mounted on the base of the mobile vehicle, a discharge pipe communicated with the bottom of the stock bin and an electric gate valve mounted on the discharge pipe, and a stirring mechanism is mounted in the stock bin; the stirring mechanism comprises a transverse plate fixedly connected to the top of the stock bin, a stirring motor mounted at the top of the transverse plate, a stirring shaft fixedly connected to an output shaft of the stirring motor and a plurality of stirring paddles fixedly connected to the side wall of the stirring shaft; the two sides of the stock bin are each provided with a stirring mechanism used for stirring materials. According to the invention, the mixing uniformity of materials in the stock bin can be improved.

The high-pressure gate valve comprises a gate valve body and a pressure release valve, the gate valve body comprises a first valve body and a first valve element, a first valve cavity, a first inflow channel and a first outflow channel are formed in the first valve body, the first inflow channel and the first outflow channel communicate with the first valve cavity, and the first valve element is movably arranged in the first valve cavity; the first valve element is connected with the first valve element so as to be switched between a first communication position and a first disconnection position, in the first communication position, the first inflow channel is communicated with the first outflow channel, and in the first disconnection position, the first valve element blocks the first inflow channel and / or the first outflow channel; the pressure release valve is fixed to the first valve body, and a flow inlet of the pressure release valve communicates with the first valve cavity. According to the high-pressure gate valve, through the pressure release valve communicated with the first valve cavity, when the pressure of fluid in the first valve cavity rises and the first valve element of the high-pressure gate valve is difficult to move, pressure in the first valve cavity can be reduced by controlling opening of the pressure release valve, and therefore the first valve element can move more easily.