240 results about "Main duct" patented technology

A control method is for a compressed air supply system with which a control device is associated. The method includes: receiving via the control device a supply demand, activating a compressed air generator to provide compressed air at a compressed air connection when the control device receives a supply demand, identifying a regeneration execution time depending on the supply demand and / or a degree of saturation of an air dryer, activating a switching valve to open a branch line when the control device identifies a regeneration execution time, and returning compressed air from the branch line counter to a filling direction through a pneumatic main line to regenerate the air dryer. A control device is for carrying out the method. A vehicle includes such a control device.

The utility model relates to fire control system technical field discloses a kind of fire water pressure control systems, including water pump and fire pipe network, pressure detector is located in the main pipeline of fire pipe network, controller is connected with the output end of pressure detector, star delta starting circuit is connected with the output end of controller, and is connected with the input end of water pump, electric valve is connected with the output end of controller, for controlling water flow break and flow regulation.The utility model detects the pressure value in the main pipeline of fire pipe network in real time by setting pressure detector, when fire pipe network is used, when pressure value increases, water pump is automatically opened by controller and the opening of electric valve is adjusted, improve fire water pump response time, water pump and electric valve linkage, controller automatically adjusts water pump opening and closing according to the pressure value in fire pipe network, avoid the power consumption caused by water pump 24 hours always open.

This utility model discloses a flow rate regulating mechanism for an ash conveying pipeline. It includes a main pipeline and a secondary pipeline. A secondary pipeline is located on one side of the main pipeline, and an regulating disc is located on one side of the secondary pipeline. A rotating mechanism is located on one side of the regulating disc. The rotating mechanism includes a rotating bar, a rotating spring, and a control bar. The rotating bar is rotatably mounted on one side of the regulating disc. By controlling the main rod to drive the secondary rod to rotate, the positions of the extension frame and the docking frame are adjusted. The movement of the extension frame and the docking frame allows the rotating bar to spray gas outwards. Simultaneously, the size of the outlet and the annular channel are controlled while adjusting the angle. This results in a smaller outlet and increased gas pressure at a given gas flow rate, allowing the gas to be sprayed further and towards the inner wall of the main pipeline, effectively blowing away dust from the side wall. The annular channel remains open, allowing air to exit along the center, achieving the effect of conveying gas through the center.

A drinking and domestic water system with a transfer point (22) from the public water supply network, a line (2, 4) from which at least one ring main (10; 38, 40) branches off, wherein the ring main (10) branches off from the line (2, 4) via an outlet opening (14) and is led back into the line (2, 4) via an inlet opening (16), wherein a flow resistance element (36) is arranged in the line (2, 4) between the outlet opening (14) and the inlet opening (16), or wherein the ring main (38, 40) is led back into a circulation line (6) via the inlet opening (16). The present invention aims to provide such drinking and domestic water system, which is intended to simplify the shutting off of the ring main for functional tests, cleaning measures or maintenance purposes.

The utility model discloses a variable diameter blowout preventer pipe relates to wellhead sealing blowout preventer technical field, and its technical key points include main pipeline, the top of main pipeline installs first variable diameter pipe, the top of first variable diameter pipe installs second variable diameter pipe, the top of second variable diameter pipe installs the top pipe, the utility model discloses when using, realized through variable diameter pipe group and realized the passage diameter adaptation, and pressure sensor and blowout preventer valve guarantee safety, with the help of flange, U -shaped clamping plate and locking assembly, realize quick firm connection with least three bolts, trapezoidal positioning structure realizes pipeline accurate butt joint, and the overall operation efficiency, safety and convenience are improved.

This application provides a wafer cleaning device and its control method. The support structure includes an upper support structure and a lower support structure. A rotating plate has multiple wafer holes. The rotating plate, the upper support structure, and the lower support structure constitute a processing chamber. The lower support structure has a vacuum pipeline and a purge pipeline. The purge pipeline includes a main pipe and multiple branch pipes connected to the main pipe. The main pipe includes an outer ring pipe and an inner guide pipe. The inner guide pipe has an air inlet channel. The extension direction of the air inlet channel makes an angle of 30°~60° with the axial direction of the inner guide pipe. A heating component is located between the outer ring pipe and the inner guide pipe to heat the purge gas to 200°C~300°C. The purge pipeline introduces purge gas into the processing chamber at a total flow rate of 155~165 L / min for a duration of not less than 10 min. The upper support structure has a gas supply component and an exhaust component. The gas supply component introduces reactive gas into the processing chamber. The exhaust component discharges the purge gas and the stripped particles at an exhaust pressure of not less than 500 Pa during the purge process. This improves wafer cleanliness.

This utility model discloses a cooling water circulation system for a freeze dryer, including a refrigeration unit and a cooling water tank. The refrigeration unit is connected to the cooling water tank via pipelines. The outlet of the cooling water tank is connected to a first freeze dryer and a second freeze dryer via a main pipeline. The first and second freeze dryers are connected to the return outlet of the cooling water tank via return pipes. The outlet of the cooling water tank is connected to the main pipeline. A water pump and a shut-off valve are installed on the main pipeline. The main pipeline is connected to a tee. The first freeze dryer is connected to the tee via a first branch pipe, and the second freeze dryer is connected to the tee via a second branch pipe. The diameters of the first and second branch pipes are different. This utility model has a simple structure and reasonable design, allowing both freeze dryers to receive a matching water intake, thereby ensuring the refrigeration effect and meeting production needs.

The present application relates to radiator technical field, specifically to a kind of multi-channel partition temperature control intelligent radiator, including two main pipes and plug at the end of main pipe, multiple copper-aluminum composite radiating fins, copper pipe is inserted in the copper-aluminum composite radiating fin, further comprising: the top of the copper-aluminum composite radiating fin is equipped with air outlet top cover, air outlet top cover has a certain opening angle door, forms air outlet that exhausts outward;The bottom of the copper-aluminum composite radiating fin is equipped with air inlet bottom cover, air inlet bottom cover has a certain opening angle door, by up and down openable and closable movable door one and movable door two, can let copper-aluminum composite radiating fin inside form air flow channel, when temperature rises, utilize the characteristics of high-temperature air to flow upwards, drive copper-aluminum composite radiating fin inside air flow, utilize top inclined plane and bottom inclined plane, guarantee top air outlet flow smoothly, increase bottom air inlet area, cooperate gasket and side plate reduce external weak air flow interference, enhance chimney effect.

This disclosure provides an integrated sampling and sedimentation device for a biological treatment tank, a biological treatment tank, and a wastewater treatment system. The integrated sampling and sedimentation device includes a main pipeline and a valve system. The main pipeline includes a main pipe, an inlet pipe, a drain pipe, an outlet pipe, and an air inlet pipe. The inlet pipe and the drain pipe are connected to the lower end of the main pipe. The outlet pipe is connected to the upper end of the main pipe and is at least partially placed inside the main pipe. The air inlet pipe is connected to the upper end of the main pipe. The lower ends of the main pipe and the outlet pipe are below the surface of the sludge mixture, while the upper end of the main pipe is above the surface of the sludge mixture. The valve system includes an outlet valve, an air inlet valve, and a drain valve. The outlet valve is located on the outlet pipe, the air inlet valve is located on the air inlet pipe, and the drain valve is located on the drain valve. With this solution, when extracting the supernatant, the air inlet pipe pressurizes the main pipeline, and the outlet pipe discharges the supernatant, thus avoiding disturbance of the bottom sludge layer and reducing the risk of contamination.

The invention relates to a high-pressure cleaning device comprising a high-pressure pump (3), a main line (5), a main line valve (8) arranged in the main line (5), a motor (4) for driving the high-pressure pump (3), a shut-off device (40) with which the motor (4) can be switched off, and an operating element (42). The main line (5) has a suction chamber (9) upstream of the high-pressure pump (3) and a pressure chamber (10) downstream of the high-pressure pump (3). A bypass device (30) for fluidic connection between the pressure chamber (10) and the suction chamber (9) is arranged between the pressure chamber (10) and the suction chamber (9), and includes a bypass valve (13). To regulate the pressure in the pressure chamber (10) by means of the bypass valve (13), the size of the free cross-sectional area of ​​the bypass device (30) can be adjusted by means of the operating element (42).The shut-off device (40) causes the motor (4) to be in the off state due to the pressure present in the pressure chamber (10) when the pressure in the pressure chamber (10) corresponds to at least a pressure threshold value. The bypass valve (13) adjusts the size of the free cross-sectional area, independently of any actuation of the control element (42), to a minimum such that the pressure in the pressure chamber (10) corresponds to at least the pressure threshold value when the main line valve (8) is in the closed state and the motor (4) is simultaneously in the on state.

This utility model relates to the technical field of starch processing equipment, specifically to an adjustable flow rate starch slurry pumping pipeline device. It includes two symmetrically arranged main pipe bodies. A connecting pipe is fixedly installed on one side of each main pipe body near the point between them. An adjusting pipe connects the two connecting pipes. Each connecting pipe contains several first connecting rods, and the adjusting pipe contains several retractable second connecting rods. This utility model achieves stepless flow rate adjustment by arranging symmetrical main pipe bodies, connecting pipes, and an adjustable-diameter silicone rubber adjusting pipe, and by utilizing the hinged first connecting rods and retractable second connecting rods to form a linkage structure. When the adjusting mechanism drives the second connecting rods to extend or retract, the diameter of the adjusting pipe changes synchronously, thereby changing the flow cross-sectional area of ​​the pipeline and achieving precise control of the starch slurry flow rate.

The utility model discloses a pipeline anti -blocking device, including the bottom plate, the top fixedly connected with the gas storage tank of bottom plate, the middle end of gas storage tank top is fixedly installed with the air pump through bolt, the air outlet of air pump is fixedly connected with booster pump through the air guide pipe, and the bottom of booster pump is fixedly connected with the top of bottom plate. The utility model discloses a air purification system through air compressor, purification box, heater and air filter screen composition. Air compressor extracts air to the inner chamber of purification box, and heater heats the air, reduces air humidity, prevents the dirt adhesion in pipeline from the water vapor condensation, and air filter screen filters the impurity in air, guarantees the clean gas of entering pipeline, further reduces the risk of pipeline blockage, can play the purpose of inflation, through the cooperation of air pump, booster pump, gas pipe and main pipeline, can deliver the gas with certain pressure to the pipeline.

The application discloses a kiln tail exhaust fan based on cement production, which comprises a pipeline, an exhaust fan and a spraying assembly. The left end of the pipeline is an air inlet end. A through hole is formed in the bottom wall of the pipeline. The bottom of the through hole is connected with an upper-end-opened box. A water inlet pipe I and a water outlet pipe are connected to the box. A blow-off hole is formed in the bottom wall of the box. A blow-off valve is installed at the blow-off hole. The spraying assembly comprises a water pump, a main pipeline and multiple branch pipelines. One end of the main pipeline is connected with the water outlet end of the water pump. The other end of the main pipeline is closed. The top end of each branch pipeline penetrates through the box and the through hole and enters the pipeline. The top end of each branch pipeline is close to the top wall in the pipeline. The bottom end of each branch pipeline is connected with the main pipeline. The exhaust fan is installed on the right side of the branch pipeline. The device can cool kiln tail gas to reduce the temperature of the tail gas, thereby reducing the high-temperature resistance requirement of the exhaust fan motor, and further reducing the cost. Meanwhile, the exhaust fan blade can work at a relatively low temperature, thereby prolonging the service life of the blade.

This application discloses a start / stop drain pipe heat tracing device, relating to the field of heating pipe networks. It includes an inlet pipe connected to the main pipe of the heating pipe network. Below the inlet pipe, a first drain valve, a relay pipe, a second drain valve, and an outlet pipe are connected in sequence. A branch pipe is connected to the side end of the relay pipe, and a needle valve is connected to the end of the branch pipe. A flexible metal hose is installed at the rear end of the needle valve, and the flexible metal hose is sequentially wound around the relay pipe, the second drain valve, and the outlet pipe. This device can achieve a steam heat tracing effect by slightly opening the needle valve, allowing a very small amount of steam to flow through the flexible metal hose. A small amount of steam also flows through the inlet pipe to maintain a certain temperature, saving steam and solving the problem of easy damage to the start / stop drain valve, ensuring the integrity of the equipment and ensuring the effective implementation of cold-proof and anti-freezing measures.

The application discloses a ball valve, which comprises a main pipeline, a fixed cover is fixedly connected to the upper side wall of the main pipeline, a ball is movably embedded in the inner wall of the main pipeline and is located below the fixed cover, an arc-shaped movable groove matched with the ball is formed in the inner wall of the main pipeline, a water through hole is formed in the middle part of the ball, a rotating shaft is movably and fixedly connected to the upper side wall of the ball and extends through the inner top wall of the main pipeline and into the fixed cover, a tooth rod is movably and fixedly arranged in the upper side wall of the fixed cover, and a limiting mechanism is arranged on one side of the tooth rod in the fixed cover. The rotating mode is replaced by the pressing mode, so that the ball valve is conveniently opened, and under the impact of flowing water on the turbine, the cleaning brush can reciprocally clean the filter screen, the filtering effect of the filter screen is ensured, the main pipeline is prevented from being blocked, and the user only needs to push the push plate inward to achieve the effect that the ball valve is automatically closed, so that the ball valve is convenient to use.

The application provides a kind of ammonia injection mixing equipment for flue gas denitration, comprising: main pipeline, with main channel for flue gas flow through;Inner ring pipeline is coaxially arranged in main channel, inner ring pipeline includes first pipe section, reducing pipe section and second pipe section in turn along the direction of flue gas flow, the inner diameter of first pipe section is smaller than second pipe section, the interval distance between the outer surface of first pipe section and the inner wall of main channel is greater than the interval distance between the outer surface of second pipe section and the inner wall of main channel;Atomizing nozzle, atomizing nozzle is arranged at the opening of second pipe section away from reducing pipe section side, atomizing nozzle is connected to reducing agent pipeline.According to the technical scheme of the application, the problem of uneven distribution of reactants and easy adhesion of reducing agent to the inner wall can be improved, thereby improving the denitration effect.

This invention discloses a disinfection and ventilation system and disinfection method for a biosafety laboratory. The system includes a laboratory room with a first exhaust HEPA filter and an supply HEPA filter installed on the ceiling. The supply HEPA filter is connected to an air outlet via a main supply duct. A fourth biosafety shut-off valve and an air supply unit are sequentially installed along the air supply direction on the main supply duct. The first exhaust HEPA filter is connected to an exhaust outlet via an exhaust duct. A first biosafety shut-off valve, a bag-in / bag-out HEPA filter, an exhaust unit, and a third biosafety shut-off valve are sequentially installed along the exhaust direction on the main exhaust duct. A first bypass duct connects the exhaust duct and the supply duct. The first and third bypass ducts provide a parallel connection for the first exhaust HEPA filter and the bag-in / bag-out HEPA filter, which are connected in series. This invention uses a parallel connection during disinfection, which effectively improves the disinfection effect of the bag-in / bag-out HEPA filter.

The application relates to the technical field of garbage incineration treatment, in particular to a slurry pipeline line structure and a flue gas treatment system applying the same. The slurry pipeline line structure comprises a first slurry pipeline structure, which comprises a main pipeline and a U-shaped pipeline arranged upwardly and protruding; the top of the U-shaped pipeline is higher than the main pipeline, two pipeline ports of the U-shaped pipeline downwardly protruding are connected with two pipeline interfaces on one side of the main pipeline, a loop is formed, and at least one branch pipeline connected with an atomizer is arranged on the main pipeline. The slurry pipeline line structure and the flue gas treatment system applying the same improve the stability of atomizer operation and solve the technical problem of slurry breakage of the atomizer.

The application relates to a double-gate-valve-based drainage anti-backflow and anti-blocking device. The double-gate-valve-based drainage anti-backflow and anti-blocking device comprises the following: a secondary pipeline is installed on a primary pipeline through a flange plate, a primary gate valve is installed on the secondary pipeline, a drain pipe is arranged on the secondary pipeline between the flange plate and the primary gate valve, the drain pipe is vertically downward, and a secondary gate valve is arranged on the drain pipe; the other end of the secondary pipeline is connected with a water pump through a hose, and the water pump is installed in a water collecting pit. The scheme provided by the application can physically isolate a backflow path through the primary gate valve arranged on the secondary pipeline, can reduce the leakage risk compared with a traditional check valve, can effectively reduce the damage of the water pump caused by the backflow of water flow in the pipeline, can drive a backwashing pipeline by using gravitational potential energy through the arrangement of the drain pipe and the secondary gate valve, can prevent the deposition of silt, can realize the anti-backflow and anti-blocking functions through the time sequence action of the double gate valves, and can empty the water flow in the main pipeline, and can reduce the starting load and starting current of the water pump.

This invention provides a duct structure for use in a spacecraft, comprising: a main duct and a filter duct, wherein the filter duct and the main duct are connected by a bend, and the end face of the filter duct away from the main duct faces the ground; the filter duct includes a first section and a second section, which are movably connected; the second section has an outer mesh for blocking small animals at its end away from the first section, and a filter element for blocking insects inside the second section, wherein the filter element contains a first filter screen and a second filter screen with a smaller mesh size, the second filter screen being arranged adjacent to the outer mesh, and the first filter screen being located on the side of the second filter screen away from the outer mesh. This invention utilizes different mesh sizes of filter screens to intercept different animals, preventing highly destructive animals from directly damaging the fine filter screen and preventing small animals from entering through damaged areas.

This utility model relates to the field of food baking technology, specifically a cake paper tray supply device. It includes a frame, a slide table, a material dispensing box, and a pneumatic feeding device. The slide table is slidably mounted on the frame; the material dispensing box is located on one side above the frame; the material dispensing box has multiple dispensing holes, and push plates are slidably mounted inside the dispensing holes; the pneumatic feeding device includes a main pipe, a first servo motor, an air pump, and multiple sets of adsorption components. This technical solution utilizes a rotary multi-station adsorption component to replace the traditional linear reciprocating mechanism, reducing idle travel time and enabling simultaneous material adsorption and unloading, resulting in a compact production rhythm and improved work efficiency.

The present application belongs to the technical field of flow meter, disclose a kind of two-phase flow meter and detection method for detecting gas phase, liquid phase simultaneously, two-phase flow meter includes main pipeline, detection mechanism, confluence mechanism, detection mechanism includes gas flow meter, liquid flow meter, first separation component and second separation component;Main pipeline is connected with the import of first separation component, second separation component is connected on one end of first separation component, gas flow meter is connected on the other end pipeline of first separation component, one end of second separation component is connected with liquid flow meter pipeline, the other end of second separation component is connected with gas flow meter pipeline, confluence mechanism is connected with the one end of gas flow meter away from first separation component and the one end of liquid flow meter away from second separation component.The present application improves the flow detection precision of gas-liquid mixed fluid, and then improves the quality of gas-liquid mixed fluid for production.

This application provides a fracturing system includes: a fracturing device having a hydraulic end; a high / low-pressure manifold skid including a main pipeline extending along a first direction and a main pipeline support for bearing the main pipeline; a guide rail; an intelligent working apparatus including a main body mounted on the guide rail; and a main-body driving mechanism. The fracturing device is located on at least one side of the high / low-pressure manifold skid in a second direction perpendicular to the first direction. The main pipeline is connected to the hydraulic end of the fracturing device. The guide rail is located on the high / low-pressure manifold skid and extends along the first direction. The main-body driving mechanism is connected to the main body of the intelligent working apparatus and configured to drive the main body of the intelligent working apparatus to move at least along the guide rail.

The utility model discloses energy -conserving formula cast -iron smelting is with feeding machine, specifically related to cast -iron smelting technical field, including base, rotary box and main pipeline, the top of base is provided with adjustable feeding assembly, adjustable feeding assembly includes rotary box, first motor, rotary table, main pipeline, extension pipeline, top groove, drive box, second motor, gear disc, tooth and tooth groove, the top of base is installed with rotary box, the inside installation of rotary box has first motor, and the output of first motor is installed with rotary table. The utility model discloses main pipeline and extension pipeline are set up, when starting second motor drive gear disc and rotating, the tooth of gear disc outside is engaged with the tooth groove of extension pipeline top, can when rotating, drive extension pipeline and move along the inside of main pipeline to the forward, the position of extension material box, supplementary feeding operation is carried out, realized the extension adjustment function of this energy -conserving formula cast -iron smelting is with feeding machine material box.

Embodiments of the present application disclose a heat distribution pipe network planning method and related equipment. The method comprises: obtaining heat source point positions, first user distribution and load information of a planning area; presetting main pipe roadways and branch pipe roadways according to the heat source point positions and the first user distribution; determining main pipe roadways in the preset main pipe roadways and branch pipe roadways in the preset branch pipe roadways, in which heat supply users are connected, as first pipe network roadways; calculating first pipe network pipe diameters and determining heat supply modes of each heat supply user in the first user distribution according to the first pipe network roadways and the load information; and if each heat supply user in the first user distribution adopts a central heat supply mode, determining the first pipe network roadways and the first pipe network pipe diameters as a target heat distribution pipe network. According to the embodiments of the present application, heat distribution pipe network roadways are planned according to heat supply user distribution, heat energy loss can be reduced, and utilization can be improved.

This utility model relates to the field of injection mold technology, specifically to a core-pulling device for injection molds. It includes a frame, on which an upper mold is slidably mounted, and a lower mold is fixedly mounted. A sliding groove is formed within the lower mold, and a core-pulling device is located within it. A driving mechanism is mounted on the frame. The driving mechanism includes a branch pipe fixedly mounted on the frame and a main pipe fixedly mounted on the branch pipe. A connecting rod is slidably mounted within the main pipe, and a piston is fixedly mounted at the lower end of the connecting rod. The upper end of the connecting rod is fixedly connected to the side of the upper mold. A fixing frame is fixedly mounted within the branch pipe, and a pusher is slidably sleeved on the fixing frame. The core-pulling device is driven directly by the mold-opening force of the injection molding machine. The ejection force during mold opening propels hydraulic oil from the main pipe into the branch pipe via the sliding rod and piston, and the pusher pushes the push rod and locking rod to move the core-pulling device, effectively eliminating the need for an electrical or hydraulic system.

The utility model discloses a capillary network structure for radiation air conditioner, including main pipeline, and the capillary pipeline is equipped on main pipeline, its characterized in that still includes: support main part, support main part is vacuum, and the plug -in block is located in support main part, and the main pipeline is inserted and locked, and the support arm is located in the outside of support main part, and the adjusting block is located in the support arm, and it is used for the capillary pipeline to hold up fixed. Capillary network structure for radiation air conditioner, support main part is vacuum, and the plug -in block is inserted and locked to the main pipeline, and the lock catch plate and the clamping block are combined and clamped, and the stable main pipeline fixed structure is formed, compared with bolt, and the ribbon connection reduces the installation step, and improves the installation efficiency, and the first adjusting groove is seted up in the outside of support main part, and the support arm is slid in the groove through connecting shaft and sliding roller, can adjust support arm position according to capillary network actual arrangement demand, realizes the random setting of fixed device, avoids the problem of traditional mode space restriction.

The utility model relates to the drip irrigation tape field, concretely relates to a kind of overlock formula drip irrigation tape with filter anti-blocking function, including main pipeline, branch pipeline and several drippers, further including first filter assembly, the first filter assembly detachably installed in the opposite end of main pipeline and branch pipeline, detachably installed with second filter assembly on the branch pipeline, several the dripper detachably installed on second filter assembly, the beneficial effects of the utility model are that: drip irrigation water can be effectively filtered by the way of double filtration, to greatly improve the water quality of drip irrigation water, to effectively prevent the clogging of dripper, and filter structure is conveniently disassembled, to facilitate subsequent cleaning replacement, convenient to use, suitable for promotion.