44results about How to "Regulating pressure" patented technology

This utility model discloses a wax pressure-adjustable waxing machine, relating to the technical field of waxing machines. It includes a base and two vertical plates. Two vertical plates are fixedly disposed on both sides of the upper surface of the base. A wax storage shell is fixedly disposed between the upper sides of the two vertical plates. A feeding pump is fixedly disposed on one side of the lower surface of the wax storage shell. The inlet of the feeding pump extends into the interior of the wax storage shell. A flexible hose is fixedly connected to the outlet of the feeding pump. A through-type pressure sensor is fixedly disposed on the lower side of the flexible hose. A wax spray head is fixedly disposed on the lower side of the through-type pressure sensor. A reciprocating screw is rotatably disposed between the two vertical plates. A slider is movably sleeved on the wall of the reciprocating screw. One side of the slider is fixedly connected to the wax spray head. This utility model can automatically adjust the waxing pressure to maintain uniform waxing and can stir the stored wax during the waxing process to maintain the uniformity of the wax.

The utility model relates to the technical field of film laminating devices, in particular to a glass panel film laminating device which comprises a conveyor and a glass plate, the glass plate is located on the upper surface of the conveyor, a supporting plate is fixedly assembled on the upper surface of the conveyor, a rotating roller is rotatably connected to the inner wall of the supporting plate, a protective film is wound on the outer circumferential face of the rotating roller, and the protective film is fixedly assembled on the conveyor. A U-shaped plate is fixedly assembled on the upper surface of the conveyor, a first electric push rod is fixedly assembled on the upper surface of the U-shaped plate, and a connecting plate is fixedly assembled at the output end of the first electric push rod. By means of the air pump, the hose, the hollow plate, the spray pipe and the like, when a glass plate needs to be coated, air flows through the hollow plate and is exhausted by the spray pipe, and when the glass plate passes, the exhausted air purges the glass plate, so that the purpose of cleaning the surface of the glass plate is achieved, and it is guaranteed that a protective film can be normally attached to the glass plate; and the protection effect of the protection film is improved.

The application discloses a geothermal energy adjustable power generation system based on carbon dioxide working medium, which comprises a power generation well, a temperature and pressure adjusting device connected through a pipeline, a gas-liquid heat exchange device connected with the temperature and pressure adjusting device at one end and connected with a steam superheating device at the other end, a heat supply device and a turbine arranged on the steam superheating device, a power generation device connected with the turbine, the power generation device connected with the gas-liquid heat exchange device through a pressure adjusting device, a plunger pump connected with a recharging well at one end and connected with the gas-liquid heat exchange device through a refrigeration device at the other end. The system can further heat the carbon dioxide working medium after being converted into steam, thereby improving the temperature and pressure of the steam and the power generation efficiency of the turbine. Moreover, the output of the heat supply device is adjusted, the rotating speed of the turbine and the output power of the power generation device are adjusted, the adjustability of the power generation capacity is realized, and the defect of the vacancy of the technology in China is solved.

The utility model relates to the field of chip testing, in particular to a pressure-adjustable testing module, and adopts the technical scheme that the pressure-adjustable testing module comprises a testing seat, a plurality of placement tables which are arranged on the testing seat and are used for loading chips, a testing assembly which is arranged on the testing seat and is used for detecting the chips, and a driving device which is used for driving the testing assembly to move up and down, the pressure proportional valve is electrically connected with the controller, the pressure adjusting air cylinder is electrically connected with the pressure proportional valve, and the piston end of the pressure adjusting air cylinder is connected with the testing assembly. According to the invention, the test pressure can be adjusted according to the pressure required by chip detection, and the practicability and adaptability of the test module are improved.

This utility model discloses a pressure-controllable cupping device, relating to the field of cupping technology. The device includes a cupping jar, with a safety tube fixedly connected to one side. A positioning ring is fixedly connected to one end of the safety tube, and a fixing bracket is fixedly connected to the inner circumference of the safety tube. A threaded rod is movably connected to one side of the fixing bracket, and a sealing gasket that cooperates with the positioning ring is fixedly connected to the circumference of the threaded rod. A sliding plate is slidably connected to the inner circumference of the safety tube, and the threaded rod threadedly passes through the sliding plate. In this utility model, when the pressure inside the cupping jar is too high, air can enter the jar through the safety tube, maintaining stable pressure and improving safety. Simultaneously, rotating the threaded rod changes the pressure of the second spring, thereby adjusting the pressure inside the jar. This makes it convenient to use. Furthermore, moving the threaded rod moves the sealing gasket, allowing air to quickly enter the jar, facilitating quick and safe removal of the jar.

The present application relates to soft ground treatment technical field, specifically to a kind of based on non-uniform soft foundation pressurized vacuum preloading device and layout method, preloading device includes: pressurized pipe body, can be connected in series;Connecting pipe body is spaced in the pressurized pipe body, side wall and the side wall of pressurized pipe body are enclosed into pressurized cavity, and the side wall of pressurized cavity is provided with multiple exhaust holes;Pressure regulating mechanism is connected between the inner cavity of connecting pipe body and pressurized cavity, and the size of the on-off and effective communication area of communication passage between the inner cavity of connecting pipe body and pressurized cavity can be adjusted;Wherein, in the case where two pressurized pipe bodies are connected, corresponding two connecting pipe bodies are connected, can be according to the permeability coefficient and consolidation characteristics of different depth soil layer, specifically adjust pressurized pressure, to improve reinforcement effect, improve construction efficiency.The preloading method is based on the preloading device described above.

The utility model provides a fadeless textile fabric wetting device capable of being washed repeatedly, which belongs to the field of fabric wetting and comprises a box body, feeding holes are formed in two sides of the box body in a penetrating manner, and guide rollers are rotatably connected to two ends of the inner side of the box body; and the disturbance assembly comprises two shaft rods, a motor and a transmission belt. By arranging the disturbance assembly, cloth can be driven to shake up and down in water while being immersed in water to be conveyed, the wetting degree of the cloth is improved, the cloth is wetted more fully and evenly, the water squeezing assembly is further arranged, the amount of water squeezed out of the cloth can be adjusted, and the requirement for different wetting degrees of different pieces of cloth is met; and the adaptability and the practicability are improved.

A non-submerged cavitation-erosion synergistic damage simulation device, system and method belong to the field of hydraulic machinery working condition simulation, including a sediment jet channel and a cleaning fluid channel in its periphery; high-speed sand-containing fluid is introduced into the sediment jet channel to form a central high-speed jet impacting the sample surface, high-speed cleaning fluid is introduced into the cleaning fluid channel to form a peripheral low-speed water curtain surrounding the central high-speed jet after being ejected from the annular steady flow pipe, and the peripheral low-speed water curtain impacts the sample surface to form a local liquid phase confining pressure zone together with the central high-speed jet. The present application not only realizes the true simulation of the actual working condition under non-submerged conditions, but also can adjust the flow and pressure of the cleaning fluid to adjust the cavitation number and cavitation collapse intensity around the high-speed sand-containing jet without changing the atmospheric environmental pressure, and quickly adjust the simulation test parameters.

This utility model provides an immersion thermal management system, comprising: a working chamber for housing a heating element; a cooling unit array located within the working chamber, the cooling unit array comprising multiple cooling units arranged at intervals, each cooling unit containing a flowing cooling liquid, the heating element being located between adjacent cooling units; a first heat exchanger connected to the cooling unit array via a liquid pipeline for cooling the cooling liquid; and a gas source connected to the working chamber via a gas pipeline for supplying a high thermal conductivity gas to the working chamber, the heating element being immersed in the high thermal conductivity gas, the high thermal conductivity gas flowing within the working chamber, transferring the heat generated by the heating element to the cooling units, thereby cooling the heating element.

The utility model provides a sintering furnace device for improving the compressive strength of molecular sieves, which relates to the technical field of molecular sieves, and comprises a furnace body and an opening, a group of placing racks are arranged in the furnace body, a mechanism for adjusting the placing racks is arranged in the furnace body, and a heating element is arranged on the inner wall of the furnace body. An air inlet is formed in one side of the furnace body, an exhaust port is formed in the other side of the furnace body, a connecting plate is installed at the top end of the furnace body, a hydraulic cylinder is installed at one end of the connecting plate, and a furnace door is installed at the bottom end of the hydraulic cylinder. After the device is used, the air cooling channel can be opened, so that the cooling process can be effectively accelerated, the temperature of a discharged product is further reduced, the cooling time is indirectly shortened, and convenience is brought to subsequent use.

This utility model provides a bonding device, relating to the field of screen bonding equipment technology, to optimize the structure of the bonding device to a certain extent and solve the technical problem that the alignment and parallelism of the upper and lower platforms are difficult to adjust during the screen bonding process. The bonding device provided by this utility model includes an upper platform mechanism and a lower platform mechanism; the upper platform mechanism includes an upper platform body, a first electromagnetic component, and a second electromagnetic component; the lower platform mechanism includes a lower platform body, a third electromagnetic component, and a fourth electromagnetic component; the first electromagnetic component is disposed within the platform body, the third electromagnetic component is disposed within the lower platform body, the second electromagnetic component is disposed around the upper platform body, and the fourth electromagnetic component is disposed around the lower platform body.

This invention relates to the field of die bonding equipment technology, and more particularly to a universal die bonding device and hot-pressing method for chips with pressure regulation function. It includes a frame, on which a first intelligent moving platform is mounted for mounting a die disk. The die disk includes a plurality of uniformly distributed wafers. A fixed frame is fixedly connected within the frame, and an electric rotating shaft is mounted on the fixed frame. The electric rotating shaft is fixedly connected to a fixed slide rail, and a slider is mounted on the fixed slide rail. A swing arm is fixedly connected to the slider on the fixed slide rail. A sliding frame is slidably connected to the swing frame, and a heat-conducting plate is fixedly connected to the sliding frame. A heating element that contacts and engages with the heat-conducting plate is fixedly connected to the swing arm. This invention heats the wafer by contacting it with the heat-conducting plate, directly heating the contact surface between the wafer and the substrate, thereby more safely controlling the heating temperature of the wafer and reducing the probability of accidental wafer failure.

The utility model relates to a transport car tank body technical field especially relates to a pressure regulating device for transport car tank body. Including transport car main part and tank body main part, tank body main part is fixed in transport car main part top one end, the top fixed exhaust pipe of tank body main part one end, the inside installation of exhaust pipe is used for adjusting exhaust mechanism, exhaust mechanism includes displacement board, sealing plug and tension spring, the inside slidingly connected of exhaust pipe has displacement board, and the one end fixed sealing plug of displacement board center is close to tank body main part, and sealing plug and exhaust pipe slidingly connected. The utility model provides a pressure regulating device for transport car tank body cooperates through tank body main part, exhaust mechanism and blocking mechanism, can when existing liquid in tank body main part inside, prevents liquid from entering exhaust mechanism through blocking mechanism, simultaneously when the gas pressure in tank body main part inside is too big, through exhaust mechanism pressure relief, realizes the regulation to tank body main part inside pressure.

The invention discloses a water electrolysis hydrogen production system. The water electrolysis hydrogen production system comprises an electrolytic cell, the electrolytic cell comprises a first exhaust port, the water electrolysis hydrogen production system further comprises a dynamic pressure regulating structure and a gas-liquid separation structure, and the dynamic pressure regulating structure is in sealed connection with the gas-liquid separation structure; the dynamic pressure regulating structure and the gas-liquid separation structure are communicated with a first exhaust port of the electrolytic bath; the dynamic pressure regulating structure is used for performing dynamic pressure relief on the electrolytic cell; the gas-liquid separation structure comprises a structure main body, a multi-stage separator arranged in the structure main body, a second exhaust port formed in the upper end of the structure main body and a liquid discharge port formed in the lower end of the structure main body; the multi-stage separator is used for receiving a gas-liquid mixture conveyed by the electrolytic bath and condensing liquid in the gas-liquid mixture; the second exhaust port is used for exhausting gas separated by the multi-stage separator; and the liquid outlet is used for discharging liquid condensed by the multi-stage separator. According to the safety protection mechanism, multi-stage pressure relief is performed on the electrolytic cell, and the safety of the electrolytic cell can be effectively improved.

An electric valve, a valve seat and a valve body assembly are integrally structured or fixedly connected or limitingly connected; a valve core includes a matching surface, the matching surface faces the valve seat and is in sliding cooperation with the valve seat; and / or, the matching surface can abut against the valve seat; the electric valve includes an adjusting component, the adjusting component includes a connecting part and a limiting part; the connecting part is threadedly connected with the valve core, the valve body assembly or a driving assembly includes an abutting surface, in a direction perpendicular to the matching surface, the abutting surface is consistent with the direction of the matching surface; the electric valve includes an elastic member, in the direction perpendicular to the matching surface, one side of the elastic member directly or indirectly abuts against the limiting part, the other side of the elastic member directly or indirectly abuts against the abutting surface, the adjusting component can adjust the distance between the limiting part and the abutting surface, so as to adjust the compression degree of the elastic member, so as to adjust the force of the adjusting component on the valve core, and further adjust the pressure between the matching surface and the valve seat.

The application provides a constant pressure hydraulic circuit with synchronous cooperation of an oil cylinder and a motor, comprising a power-assisted oil cylinder and an accumulator, and at least one set of hydraulic adjusting circuits is connected to an oil inlet of the circuit through an oil inlet circuit, the oil outlet ends of the hydraulic adjusting circuits are connected to a rodless cavity of the power-assisted oil cylinder and the accumulator respectively, and the oil return ends are connected to an oil return branch connected to an oil return pipeline through an overflow valve. The hydraulic circuit can keep the working pressure of the power-assisted oil cylinder constant during the rising and falling processes, thereby ensuring the stable working state of the motor, achieving convenient adjustment of the working pressure of the power-assisted oil cylinder, and making the hydraulic system convenient to maintain because the accumulator and the power-assisted oil cylinder are connected to the same hydraulic system. In addition, the volume of the accumulator of the application can be designed to be smaller than that of the accumulator in the traditional hydraulic circuit, which is convenient to install and saves cost and space.

The utility model provides a kind of active lifting knee joint and rehabilitation walking aid exoskeleton, it is related to medical rehabilitation instrument technical field, solve the technical problem that the walking aid exoskeleton of prior art cannot provide support for patient knee joint, leading to the technical problem that the wearing comfort is not ideal.The active lifting knee joint and rehabilitation walking aid exoskeleton include lifting drive assembly and rotationally connected thigh assembly and shank assembly, and lifting binding is provided on thigh assembly, and lifting binding is slidably arranged on thigh assembly;Lifting drive assembly is connected with lifting binding, and lifting drive assembly is used to drive lifting binding to reciprocate in the mode of approaching or moving away from shank assembly.The utility model is used to provide a kind of active lifting knee joint and rehabilitation walking aid exoskeleton for providing support for user knee joint, to improve the wearing comfort of user.

The utility model relates to a temperature and humidity control isolation device which comprises a weighing isolation device and a public adjusting device, the weighing isolation device comprises three cabins, gloves capable of extending into the cabins are arranged on the side walls of the cabins, and quick-opening sealing cabin doors for assembling the gloves are arranged on the cabins. The cabin body sequentially comprises a transfer cabin, a buffer cabin and an operation cabin, a fresh air system for self-cleaning is arranged in the cabin body, the public adjusting device comprises a pressure adjusting assembly, and the pressure adjusting assembly is used for ensuring that the transfer cabin, the buffer cabin and the operation cabin are in positive pressure step by step. The device has the effects of reducing the number of times that people enter and exit the clean room, improving efficiency and reducing cross contamination.

The application discloses a printing device and a film printer. The printing device comprises a printing head assembly, a printing roller assembly, a pressure assembly and an adjusting assembly. The printing roller assembly is arranged below the printing head assembly. The pressure assembly is arranged on the side of the printing head assembly away from the printing roller assembly. The adjusting assembly can adjust the force applied by the pressure assembly to the printing head assembly. When the printing device is working and the pressure between the printing head assembly and the printing roller assembly needs to be adjusted, the adjusting assembly can act on the pressure assembly, so that the force applied by the pressure assembly to the printing head assembly is adjusted. Thus, the pressure between the printing head assembly and the printing roller assembly can be adjusted, and the printing quality is improved.

The utility model discloses a road pavement collapse simulation test device including support frame, experiment box, longitudinal pressurization unit, lateral wheel simulation pressurization unit, a plurality of sensor array grid, the experiment box top is provided with the opening, longitudinal pressurization unit includes pressurization oil cylinder, pressurization sole, and pressurization board is located experiment box top opening upper portion, lateral wheel simulation pressurization unit includes push oil cylinder, tire simulation subassembly, sensor array grid includes flexible grid, and a plurality of force sensors are arranged on the flexible grid, the utility model provides integrated longitudinal pressurization unit, lateral wheel simulation pressurization unit and water flow scouring unit, can realize the collapse simulation under the coupling of multiple factors, can improve the arrangement accuracy through the modularization of sensor array in the simplification sensor installation process, is suitable for the research of roadbed deformation collapse mechanism.

The utility model provides a fabric embossing device, and relates to the technical field of fabric embossing, the fabric embossing device comprises a mounting seat mechanism, an embossing mechanism is mounted on the mounting seat mechanism, and pressure applying mechanisms are mounted on two sides of the mounting seat mechanism; the mounting seat mechanism comprises a fixing seat, a fixing bottom plate is fixedly connected to the lower surface of the fixing seat, side mounting plates are fixedly connected to the two sides of the upper surface of the fixing seat, a rotating shaft is rotatably mounted between the upper ends of the two side mounting plates, and a conveying roller is fixedly connected to the surface of the rotating shaft; by means of the technical scheme, when the first motor drives the knurling roller to be matched with the conveying roller to conduct knurling processing on cloth, the second motor drives the pressing roller to ascend and descend, the pressing roller is located on the two sides of the knurling roller and abuts against the cloth, and then the pressing pressure of the knurling roller on the cloth can be adjusted; therefore, the effect of adjusting the embossing depth is achieved, and embossing processing can be carried out on fabrics with different thicknesses.

The utility model discloses a special fiber cloth bonding device which comprises a mounting plate, a first press-fit roller and a second press-fit roller which are symmetrically arranged are mounted on the mounting plate, a second gluing piece is mounted on one side above the first press-fit roller, a first gluing piece is mounted on one side above the second press-fit roller, and a second gluing piece is mounted on one side above the second press-fit roller. A first convex roller and a second convex roller which are symmetrical are arranged above the first pressing roller and the second pressing roller, and dense convex structures are respectively arranged on the circumferences of the first convex roller and the second convex roller. The first convex roller is matched with the second convex roller, the second layer of cloth located in the middle is impressed, concave-convex structures are formed on the surfaces of the two sides of the second layer of cloth, and then the second layer of cloth, the first layer of cloth and the third layer of cloth are pressed and bonded through matching of the first pressing roller and the second pressing roller. And compared with direct pressing bonding, the amount of glue on the bonding surface is effectively increased, so that the bonding effect is ensured.

The utility model relates to an automatic crankshaft polishing device based on self-adaptive pressure control, which belongs to the technical field of machining and particularly comprises a machine tool body, a polishing frame guide rail is mounted on the machine tool body, and a polishing belt component is mounted on the polishing frame guide rail; the polishing belt assembly comprises a fixing clamp, a polishing frame and a polishing belt, the polishing frame is installed on the polishing frame guide rail through the fixing clamp, a pressure detection device is installed on the polishing frame, the polishing belt is installed on the pressure detection device, and a laser scanner is further installed at the front end of the polishing frame. The laser scanner and the pressure detection device are respectively used for being connected with a machine tool controller. The polishing device is simple in structure, convenient to use and capable of monitoring the polishing force in real time and dynamically adjusting the feeding amount according to the annular force measurement sensor.

The invention discloses a heat management system, a control method of the heat management system and a vehicle, and the heat management system comprises a compressor, a condenser, a high-pressure liquid storage device, an evaporator, a main path throttling valve, a bypass throttling valve and an exhaust throttling valve. The refrigerant system adopts an exhaust throttle valve device to adjust the high pressure of the heat management system, so that when the heating capacity of the system is insufficient in a steady state, the heat comfort can be compensated and improved by increasing the exhaust pressure and increasing the power of a compressor, and the exhaust pressure can be quickly increased and the starting speed of the system can be accelerated in an unsteady state; the problem that a secondary loop heat management system is low in low-temperature cold start speed is solved.

The utility model discloses a dry mud discharging mechanism which comprises a scraper blade main shaft, one end of the scraper blade main shaft is fixedly connected with a scraper blade pressure adjusting gear, the scraper blade main shaft is fixedly connected with a spring fixing support, one side of the spring fixing support is provided with a support fixing sleeve, a scraper blade is fixedly arranged below the support fixing sleeve, and the scraper blade pressure adjusting gear is fixedly connected with the scraper blade main shaft. The upper surface of the scraping plate is slidably connected with an extended scraping plate, and a spring is arranged between the upper surface of the scraping plate and the spring fixing support; the scrapers can be arranged in a layered and staggered mode through the spring fixing support and the support fixing sleeve, layered design of the scrapers is achieved, integral forming is not adopted, the single scrapers can be replaced when damaged, the pressure of the spring can be adjusted through the positioning pin on the support fixing sleeve, and the pressure between the scraper and the filter cloth can be adjusted to a proper value. The extended scraper can be extended according to the actual condition of the filter cloth, so that the pressure between each scraper and the filter cloth is balanced, and the sludge scraping effect is ensured.

This utility model relates to the field of mold technology and discloses a mold slider guiding and tension adjustment device, including a base plate, on which a slide rail is fixedly installed. A slide block is slidably connected to the end of the slide rail away from the base plate. A mold body is disposed at the end of the slide block away from the slide rail. A guide assembly and a tension adjustment assembly are fixedly installed at the end of the slide block near the slide rail. The guide assembly includes a guide frame and a mounting frame. A limit ring is fixedly installed at the end of the mounting frame away from the guide frame. In this mold slider guiding and tension adjustment device, the guide balls, evenly spaced, form a multi-point support structure with the limit ring. The guide balls roll in contact with the slide rail, converting sliding friction into rolling friction, which serves as a guide, preventing displacement during movement and avoiding skew caused by unilateral force. Furthermore, the symmetrical structure ensures uniform pressure distribution of the tension rollers on the slide rail, preventing unilateral wear of the slide rail and extending its service life.

An electric valve comprises a valve body assembly and a valve core, the valve body assembly has a valve cavity, and at least part of the valve core is located in the valve cavity; the electric valve comprises a valve seat, the valve seat is integrally formed with the valve body assembly or is fixedly connected or limitingly connected with the valve body assembly; the valve core can rotate relative to the valve seat, the valve core comprises a matching surface, the matching surface faces the valve seat and is in sliding fit with the valve seat; the electric valve comprises an adjusting component, the adjusting component comprises a connecting part and a limiting part, the connecting part is in threaded connection with the valve body assembly, the valve core comprises a back surface, the back surface is arranged opposite to the matching surface in a direction perpendicular to the matching surface, the electric valve comprises an elastic member, one side of the elastic member is in direct or indirect abutment with the limiting part in the direction perpendicular to the matching surface, the other side of the elastic member is in direct or indirect abutment with the back surface, the adjusting component can adjust the distance between the limiting part and the back surface, so as to adjust the compression degree of the elastic member, to adjust the force of the elastic member on the back surface, and further to adjust the pressure between the sliding surface and the valve seat.

The application discloses a hot blast stove baking control system, a control method, equipment and a storage medium. The hot blast stove baking control system comprises at least one hot blast stove, which is communicated with a blast furnace and provides heat energy to the blast furnace; the hot blast stove is internally provided with a pressure detection module and a temperature detection module for detecting the pressure and temperature in the hot blast stove; a flue main pipe is communicated with the hot blast stove, and a flue valve is arranged on the flue main pipe; when the flue valve is opened, waste gas in the hot blast stove is discharged; a bypass pipe is arranged between the input end and the output end of a waste heat recovery module and is provided with a bypass valve; a quick-opening valve is arranged on the flue main pipe; an input end of a flue gas induced draft fan is communicated with the output end of the waste heat recovery module, and an output end is communicated with a chimney; the flue gas induced draft fan is used for leading out waste gas in the hot blast stove; a control module is used for adjusting the opening degree of the flue valve, the bypass valve and the quick-opening valve and the frequency of the flue gas induced draft fan according to the pressure and the temperature, so as to adjust the negative pressure value in the hot blast stove. The application improves the negative pressure adjusting effect of the hot blast stove.

The utility model relates to the technical field of extruders, and discloses a double-screw extruder pressure regulation and control device which comprises a base, the top of the base is fixedly connected with an extrusion cylinder, the left side of the top of the extrusion cylinder is communicated with a discharging pipe, the top of the discharging pipe is communicated with a storage barrel, the outer side of the discharging pipe is fixedly connected with a hollow block, and the hollow block is fixedly connected with a screw rod. The device comprises a hollow block, a motor is fixedly connected to the bottom of the hollow block, the top of the motor penetrates through the hollow block and is fixedly connected with a horizontal gear, sliding blocks are arranged on the front side and the rear side of the inner bottom end of the hollow block, racks are fixedly connected to the adjacent sides of the two sliding blocks, and the two racks are connected with the left side and the right side of the horizontal gear in an engaged mode respectively. According to the utility model, the hollow pipe and the rotating rod can drive the first valve body and the second valve body to rotate, and the descending speed of materials can be controlled by adjusting the opening and closing angles of the first valve body and the second valve body, so that the pressure in the extrusion cylinder is adjusted.

The utility model belongs to cigarette equipment technical field discloses a ROFA conveying trolley track cleaning device and ROFA conveying trolley. ROFA conveying trolley includes ROFA conveying trolley body and ROFA conveying trolley track cleaning device. ROFA conveying trolley track cleaning device includes first connecting plate, second connecting plate, tow rope, brush and counterweight. First connecting plate is connected in ROFA conveying trolley body. Brush is connected in second connecting plate, and counterweight position is adjustably connected in second connecting plate, and the position of counterweight is adjusted, and the pressure of brush to track can be changed. Second connecting plate is rotatably connected in first connecting plate, and under the action of gravity, first connecting plate rotates downwardly due to the action of counterweight, makes brush contact with track, thereby can clean track. The length of tow rope is adjusted to limit the angle of second connecting plate relative to first connecting plate rotation.