14 results about "Branch Duct" patented technology

This application discloses a layered ventilation and temperature control pipeline device for feed stacks, including a main ventilation duct, a fan on one side of the main ventilation duct, multiple first branch ducts on one side of the main ventilation duct, multiple second branch ducts on one side of the multiple first branch ducts, multiple tray frames on the outer side of the multiple second branch ducts on the same side of the first branch duct, and ventilation openings on both sides of the top of the second branch ducts. The tray frame includes: multiple tray seats, respectively disposed on the outer side of the multiple second branch ducts; and four connecting columns, disposed at the four corners of the multiple tray seats. The multiple second branch ducts pass through the center of the hollow tray seats, so that the ventilation openings can directly blow air to different feed layers, preventing feed at different locations and layers from getting damp. The impact force on the second branch ducts is buffered by dampers and springs to prevent damage to the second branch ducts that ventilate each layer of feed, thus affecting the ventilation efficiency of the feed stack.

This application provides a testing apparatus and method for automatic coupler function testing. The testing apparatus includes a test bench, an air compressor, a main switch, a main air duct, and a piping assembly. The air inlet of the main air duct is connected to the air outlet of the air compressor. The main switch is closable on the main air duct. The air inlet of the piping assembly is connected to the air outlet of the main air duct. The piping assembly includes at least two parallel air supply ducts. Each air supply duct includes a branch duct and a switch valve. The switch valve is closable between the air inlet of the air supply duct and the air inlet of the corresponding branch duct. The air outlet of the branch duct is connected to the coupler valve assembly of the automatic coupler under test. This application solves the problem of manual operation in existing automatic coupler function tests where the connection between the air duct and the coupler valve assembly relies on manual handling, reducing safety hazards, simplifying the testing procedure, and improving testing efficiency.

The present application relates to a powder conveying system with air quality regulation function and a method thereof. The present application comprises a Roots blower, an exhaust duct, a powder air lock, a conveying duct and an air quality regulation system. The air quality regulation system comprises a regulation duct, an air filter, an air humidifier, an air dryer, an ultraviolet sterilizer, a humidity sensor and a control processor. The exhaust duct is provided with a humidity sensor. The regulation duct comprises a first branch duct, a second branch duct and a third branch duct. The first branch duct is provided with an air humidifier, and the third branch duct is provided with an air dryer. Compared with the prior art, the present application sets an air quality regulation system, so that the air source of the Roots blower can be filtered, sterilized and kept at a suitable humidity for powder production, thereby making the air source of the Roots blower suitable for the powder conveying system, avoiding the situation that the total amount of microorganisms and moisture of the powder exceed the standard, and improving the product quality of the powder.

A junction for a building drainage system having a main portion for conducting a liquid therethrough along a first axis, the main portion having an input end and an output end. A branch portion conducts a liquid along a second axis into the main portion, the branch portion having an input end. The second axis is disposable vertically at an angle of between about 2 degrees and about 45 degrees to the horizontal. The input end of the branch portion squarely connects to a branch conduit conducting a liquid along a third axis that is disposed vertically at an angle of between about 0 degrees and about 10 degrees to the horizontal.

This utility model relates to a total heat exchange fresh air purification system, including a total heat exchanger, an air inlet duct connected to an indoor air inlet, a first branch duct connected to the end of the air inlet duct, a plurality of first ventilation ducts connected to the first branch duct, and a first DC variable frequency fan for supplying air to the room installed in the first ventilation duct; an exhaust duct connected to an indoor air outlet, a second branch duct connected to the end of the exhaust duct, a plurality of second ventilation ducts connected to the second branch duct, and a second DC variable frequency fan for exhausting air from the room installed in the second ventilation duct; the ends of adjacent first and second ventilation ducts are located in the same air supply and exhaust area. In the above scheme, each area (room) can independently operate the first and second DC variable frequency fans to activate the total heat exchanger, avoiding forced linkage of the entire area which would cause a large amount of ineffective air exchange and energy waste, and significantly reducing the overall operating energy consumption.

The utility model belongs to the technical field of lung catheter devices, and relates to a multifunctional spraying and alveolar lavage catheter which comprises a main catheter, the rear side of the main catheter is connected with a branch catheter, a sleeve film is arranged at the front end of the main catheter, a spraying hole is formed in the sleeve film, and a tearing hole is formed in the outer side of the top of the sleeve film. The spraying and alveolar lavage integrated tube has double functions of spraying and alveolar lavage, the treatment effect is improved, the operation complexity is reduced, and the spraying and alveolar lavage integrated tube is suitable for various medical scenes.

The utility model relates to the technical field of ventilation pipelines, and particularly discloses a shunting type ventilation pipeline which comprises a main pipeline, the main pipeline is connected with a plurality of butt-joint pipelines, the radius of the air inlet end of each butt-joint pipeline is larger than that of the air outlet end of each butt-joint pipeline, an airtight assembly is arranged in each butt-joint pipeline, and each airtight assembly comprises a sealing ball, a bearing frame and a spring. When the branch pipeline is separated from the butt-joint pipeline, the sealing ball can be pushed to move towards the air outlet end of the butt-joint pipeline under the action of elastic force of the spring, and due to the fact that the radius of the sealing ball is larger than that of the air outlet end of the butt-joint pipeline, the sealing ball can be pushed to move towards the air outlet end of the butt-joint pipeline when the sealing ball abuts against the air outlet end of the butt-joint pipeline finally. The air outlet end of the butt joint pipeline can be completely sealed, so that the main pipeline is isolated from the outside, sealing can be automatically achieved when the branch pipeline is dismantled, the air tightness of the main pipeline is guaranteed, extra sealing measures do not need to be used any more, and the whole ventilation system does not need to be suspended.

The invention discloses a variable swirl ratio air inlet channel based on double-valve cooperative control and a control method. The air inlet channel comprises an air inlet, a first branch air channel and a second branch air channel, and the first branch air channel and the second branch air channel are arranged and adopted in a non-cross-deviation series connection mode; the second branch air passage is used for generating a main vortex, and the inner wall of the air passage is provided with a flow guide bulge or a bent shape; the inner wall face of the first branch air channel is a smooth wall face and is similar to a straight opening air channel. The outlet of the first branch air channel is close to the air inlet; an outlet of the second branch air channel is far away from the air inlet; a boss is further arranged on the upper wall face of the bent position of the first branch air channel and the second branch air channel, and the boss is communicated with the inner wall of the first branch air channel or the inner wall of the second branch air channel. The airflow flowing out of the first branch air channel is coordinated with the airflow flowing out of the second branch air channel in direction, so that the airflow from the first branch air channel flows in the direction of the lower piston, and the airflow from the second branch air channel flows in the radial direction of the cylinder sleeve.

This ventilation device (100) comprises: a ventilation device body (1); an air supply fan (2) provided inside the ventilation device body (1); a collective duct (5) connected to the air supply fan (2); first, second, and third branch ducts (6-1, 6-2, 6-3) branched from the collective duct (5) and connected to respective rooms; a pressure sensor (4) for detecting static pressure in the collective duct (5); and a control circuit unit (3) for adjusting a control gain for controlling the output of the air supply fan (2) on the basis of the difference between a target static pressure, which is a set target value of the static pressure, and a detected value of the pressure sensor (4). The air volume of the air supply fan (2) is controlled so that the detected value of the pressure sensor (4) is the target static pressure, and the control gain is adjusted by the sign of the difference.

This ventilation device comprises: a supply air duct (31) having a plurality of individually openable and closable branch ducts (31-1, 31-2); an air supply blower (22) for supplying air to the supply air duct (31); a supply air pressure sensor (25) for detecting static pressure in the supply air duct (31); and a control device (24) for controlling the air volume of the air supply blower (22) so that the detected value of the air supply pressure sensor (25) becomes a target value. The control device (24): calculates an air volume change amount through multiplication of the difference between the target value and the detected value by a control gain; periodically changes an air volume command value for the air supply blower (22) by using the calculated air volume change amount; and updates the control gain by using the air volume change amount of the air supply blower (22) and the amount of change in the detected value obtained as a result of a change in air volume according to the air volume change amount of the air supply blower (22), and uses the updated control gain to calculate the air volume change amount of the air supply blower (22) for the next cycle.

The utility model provides a side wall circulation temperature control system based on a ventilating duct shaped like a Chinese character'gui ', which comprises a ventilating duct, the ventilating duct comprises a main air duct arranged along a first direction, a first branch air duct arranged along a second direction and an L-shaped second branch air duct, and both the first branch air duct and the second branch air duct are communicated with the main air duct; the ventilation mechanism is connected with the second branch air duct; the main valve is arranged on the main air duct and is used for realizing connection or disconnection between the second branch air duct and the first branch air duct; the second branch air duct comprises a first branch arranged in the first direction and a second branch arranged in the second direction, and the first direction and the second direction are orthogonally arranged; and the main air duct is connected with the second branch. The side wall circulation temperature control system can solve the problem that the ventilation efficiency is low by adopting a single-pipe fan ventilation mode when the local grain temperature of the side wall of a grain pile rises.

The utility model relates to the technical field of pipelines for ventilation systems, in particular to an air duct quick-matching system which comprises a main duct system and a branch duct system, the main duct system is a main duct and adopts a rigid duct, namely a hard duct, the branch duct system is a hose connected with a user side, and the main duct system and the branch duct system are soft and hard pipe combined pipeline systems. All parts of the main pipe system and the joints between the hoses are connected through socket and spigot joints. A soft and hard pipe combined type pipeline system is adopted, system measurement errors and installation errors in the installation process can be contained by the flexible elbow and the tail end hose, and therefore the error-tolerant rate of the air pipe quick-assembly system is increased; all parts of the main pipe and the joints between the hoses are connected through socket and spigot joints, so that the mounting convenience can be improved, and subsequent mounting treatment is facilitated.

The present application provides a cleaning member drying module, a cleaning base station, and a cleaning system. The cleaning member drying module (10) comprises a housing (110), an airflow driving member (120), and a heating member (130). The housing (110) has a branch duct (111) inside, and a plurality of receiving spaces (112) are installed on the housing (110) in communication with the branch duct (111). The receiving spaces (112) are used to place a cleaning member (2) of a cleaning device (100); the airflow driving member (120) is installed in the housing (110) and has a fan duct (121), and the fan duct (121) is in communication with the branch duct (111); the heating member (130) is installed upstream of the receiving spaces (112) along an airflow path and is used to form a drying airflow to heat the flowing airflow and dry the cleaning member (2).

This application relates to a gas dispersing device, which falls under the field of gas dispersion technology. It includes a main pipe, branch pipes, secondary pipes, and branch ducts. The secondary pipes are connected to the main pipe, and the branch ducts are connected to the branch pipes via the secondary pipes. Each branch duct has multiple holes, which are evenly distributed along its length and staggered between adjacent holes. This application improves the dissolution efficiency and uniform distribution of gas in a liquid by employing a hierarchical pipe structure and optimized hole placement design. The device uses multiple evenly distributed and staggered holes to improve the uniformity of gas within the pipe, increase the contact area between the gas and liquid, optimize gas emission and dispersion, ensure uniform gas distribution in the liquid, reduce bubble formation, and guarantee stable gas diffusion and dissolution efficiency. This device can be widely applied in water treatment, aquaculture, and wastewater treatment, significantly improving gas dissolution efficiency.