2779 results about "Gas passing" patented technology

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially an organ such as a lung, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. Gas passing into and out of the organ may be conditioned to prolong tissue viability.

The utility model belongs to the technical field of air valves, and discloses an automobile, a massage seat and a seat air valve control device, comprising a massage air valve cavity, a massage air valve arranged in the massage air valve cavity, a waist support air valve arranged in a waist support air valve cavity, and air entering a main air inlet and passing through the massage air valve cavity and the waist support air valve cavity. The air enters an air bag connected with the waist support air bag connector and the massage air bag connector to form a waist support inflation air channel and a massage inflation air channel; gas in the gas bag is released through the massage gas valve cavity and the waist support gas valve cavity to form a waist support gas release gas path and a massage gas release gas path; the massage air valve and the waist support air valve control air to pass through the waist support inflation air path, the massage inflation air path, the waist support deflation air path and the massage deflation air path, and double services of waist massage and back massage are provided for a seat user. The massage air valve and the waist support air valve are used for replacing an electromagnetic air valve, so that the size is smaller, the energy consumption is lower, the resistance is smaller, the weight is lighter, the silence is better, the radiation is lower, and the cost is lower.

The utility model belongs to the technical field of batteries, and discloses a cover plate structure and a battery, the cover plate structure comprises a top cover plate and a support plate, the top cover plate is provided with an anti-explosion valve and a protruding part, and the protruding part and the anti-explosion valve are arranged at an interval; the supporting plate is connected with the protruding part so that an exhaust channel can be formed between the supporting plate and the top cover plate, a first exhaust hole and a second exhaust hole are formed in the supporting plate, and the first exhaust hole and the second exhaust hole are both communicated with the exhaust channel; the projection of the second exhaust hole in the first direction at least partially coincides with the projection of the anti-explosion valve in the first direction. Thus, the supporting plate is arranged on the protruding part, so that an exhaust channel is formed between the supporting plate and the top cover plate, high-temperature and high-pressure gas can enter the exhaust channel through the first exhaust hole and the second exhaust hole when the battery is in thermal runaway, and the exhaust effect of the anti-explosion valve is improved; the supporting plate can limit the end part of the pole group, so that the pole group is prevented from moving and shielding the anti-explosion valve, and the safety performance of the battery is improved.

The invention relates to the technical field of smoke exhaust waste heat recovery devices, and discloses a waste heat utilization and recovery device and method applied to boiler combustion smoke, and the waste heat utilization and recovery device applied to the boiler combustion smoke comprises a bottom frame, and a heat absorption mechanism, a middle section partition plate and a heat release assembly which are fixedly mounted at the top of the bottom frame in sequence; through the arrangement of the heat buffering assembly, when the temperature of smoke is high, the heat absorbing fins can absorb part of heat and conduct the heat to the medium storage cavity, a medium in the medium storage cavity absorbs the heat to be evaporated into gas, and the gas is filled with an inflatable heat conduction film through a gas flowing cavity; the inflatable heat conduction film is expanded to store the gaseous medium, the gaseous medium is dissipated when the smoke temperature is low, the gaseous medium is condensed into liquid after heat dissipation, then the liquid is absorbed by the liquid absorption core plate and returns to the medium storage cavity, and therefore heat transfer and buffering are facilitated, and damage of thermal shock to device parts is reduced.

The invention provides a gas-liquid separation device, which comprises: a tank body, the side wall of the tank body is provided with a gas-liquid inlet and a liquid outlet, and the top of the tank body is provided with a gas outlet; the gas-liquid separation cavity is formed in the tank body, a gas-liquid separation unit is arranged in the gas-liquid separation cavity, and the gas-liquid separation unit comprises a rotational flow plate and a baffle plate assembly located below the rotational flow plate; the gas washing cavity is formed in the tank body and is positioned above the gas-liquid separation cavity; a gas washing unit is arranged in the gas washing cavity; wherein the gas-liquid inlet penetrates through the side wall of the tank body and extends inwards to be communicated with the rotational flow plate, the rotational flow plate is configured to enable to-be-separated gas-liquid fluid from the gas-liquid inlet to rotate and then enter the baffle plate assembly so as to realize gas-liquid separation, separated gas with liquid drops moves upwards, liquid removal is carried out through the gas washing unit, and the gas washing unit is used for washing the gas with the liquid drops. The gas after liquid removal is discharged through the gas outlet, and the separated liquid moves downwards and is discharged through the liquid outlet. The invention also provides a gas-liquid separation method.

The invention relates to the technical field of medium phase state determination, in particular to a PVT analyzer and method suitable for multi-component fluid medium phase state determination, and the PVT analyzer comprises a determination assembly, a test cylinder, a balance cylinder, a pressurization cylinder, a gas distribution pipeline, a first driving mechanism and a second driving mechanism. The structure is reasonable and compact, combination of gas with various components can be achieved through the multiple gas cylinders and the gas distribution pipeline, mixing of the gas according to the set ratio can be achieved by adjusting the gas distribution valve, the multiple gas cylinders can inject the gas into a rodless cavity of the pressurization air cylinder through the gas distribution valve and the gas distribution pipeline, and the gas injection efficiency is improved. The second driving mechanism drives the piston rod of the pressurizing air cylinder to continuously input gas in the rodless cavity of the pressurizing air cylinder into the rodless cavity of the balance air cylinder through the pressurizing pipeline and the one-way valve, so that the pressure of the rodless cavity of the balance air cylinder can be increased; and the precise gas distribution and gas pre-pressurization functions of multi-component gas can be realized.

The invention belongs to the technical field of gas turbine blade test equipment, and relates to a multi-gas-path coordinated regulation high-temperature blade gas thermosetting rotation test system, which comprises a test shell, a transmission shaft, a rotation assembly, a high-temperature gas supply assembly, a cooling gas supply assembly and a detection assembly. The transmission shaft can be driven to rotate through the rotating assembly, centrifugal force load borne in the actual operation process is simulated, high-temperature gas is conveyed into the test shell through the high-temperature gas supply assembly, a high-temperature environment is provided for the tested turbine blade, and thermal load borne in the actual operation process is simulated; cooling gas is conveyed into the tested turbine blade through the transmission channel by the cooling gas supply assembly, the cooling environment in the actual operation process is simulated, and finally various data of the test are detected through the detection assembly. Therefore, the flow heat transfer characteristic and the strength characteristic of the turbine blade under the actual operation condition can be obtained as far as possible through tests.

The invention relates to the technical field of fuel cells, in particular to an anti-explosion composite hydrogen fuel cell which comprises a cell box and a cell body arranged in the cell box, and a gas passing channel is formed between the outer side of a cell stack of the cell body and the inner wall of the cell box; an outer air inlet and an inner air inlet are formed in the bottom of the battery box; the battery box further comprises a fan, a sealing assembly, a nitrogen tank and a hydrogen concentration sensor, and the fan, the sealing assembly, the inert gas tank and the hydrogen concentration sensor are arranged in the battery box, so that when a trace amount of hydrogen leaks from the battery body, the fan actively and forcibly ventilates to quickly dilute and discharge the hydrogen, and continuous accumulation is avoided; and when the hydrogen is quickly leaked, the outer gas inlet is immediately sealed through the sealing assembly, and the inert gas tank is communicated with the inner gas inlet, so that an oxygen-free environment is quickly established, the deflagration condition is fundamentally eliminated, and the problems of single response mode and insufficient safety redundancy in the explosion-proof design of the traditional hydrogen fuel cell are solved.

The invention relates to the technical field of gas cleaning equipment, and provides a gas dust filtering device which comprises a dust removal chamber, a filtering part and a sweeping part, and the dust removal chamber is communicated with a gas inlet pipe and a gas outlet pipe through which gas passes; the filtering piece is arranged in the dust removal chamber, is provided with filtering holes through which gas passes, and is used for intercepting dust contained in the gas; the sweeping part is movably arranged in the dust removal chamber, located on the side, close to the exhaust port of the air inlet pipe, of the filtering part and used for sweeping dust accumulated on the surface of the filtering part. According to the technical scheme, the problem that the maintenance cost is increased due to the fact that a filtering device is blocked by intercepted dust when the filtering device is used for dedusting air in the related technology is solved.

The utility model relates to the technical field of air compressor heat recovery, and discloses a heat recovery pipeline device for a screw air compressor, which comprises a bottom plate, a shell and an air compressor main body, the shell is fixedly connected with the bottom plate, a support seat is arranged on one side of the shell, the air compressor main body is mounted at the upper end of the support seat through a fastener, and the air compressor main body is fixedly connected with the bottom plate. According to the air compressor, heat generated during working of the air compressor body is transmitted to the multiple sets of heat conducting fins below through the heat conducting blocks, and then the heat is effectively transmitted to gas passing through the spiral pipe through the multiple sets of heat conducting fins; then heated gas enters a heat conduction coil pipe through a conveying pipe and a gas inlet pipe, a motor drives a stirring column to rotate through an output shaft, multiple sets of stirring blades on the stirring column stir water, under cooperation of a plurality of threaded groove holes, flowing of the water in the water storage tank is accelerated, the water is fully heated, and the recovery efficiency is improved.

The invention relates to the field of high-voltage or large-current switches with arc extinguishing or arc preventing devices, in particular to a circuit breaker. An existing circuit breaker is improved, a brand-new solid-sealed polar pole is adopted, and high-pressure gas is compressed and generated in the opening and closing process of the solid-sealed polar pole by means of linear motion of a transmission rod in the opening and closing process of the solid-sealed polar pole and an air cylinder in transmission connection with the transmission rod; high-pressure gas is subjected to heat dissipation through the heat dissipation pipe section of the slow-release exhaust pipeline, and then low-temperature high-pressure gas is continuously blown into the heat dissipation gas cavity through the slow-release exhaust pipeline, so that heat exchange is carried out in the arc extinguish chamber in the heat dissipation gas cavity, high temperature generated in the opening and closing process of the arc extinguish chamber is taken away, and heat dissipation and cooling of the arc extinguish chamber are achieved. According to the novel solid-sealed polar pole, heat dissipation and cooling of the arc extinguish chamber are achieved by means of power provided by an operating mechanism in the opening and closing process, other cooling equipment does not need to be configured, the system structure is simplified, and energy consumption is reduced.

The invention belongs to the technical field of insulator replacement, and discloses a power-assisted upper limb exoskeleton robot for power transmission line tower insulator replacement, which comprises a support frame, a first servo motor is fixed at the top end of the support frame, an air injection mechanism is fixed outside the support frame, and an air pressure adjusting mechanism is arranged at one end of the air injection mechanism. Through cooperation of a gas conveying box, a corrugated conveying pipe, a fourth servo motor and other structures, the device can convey gas flow by starting the fourth servo motor and a fifth servo motor, gas is sprayed out through a gas conveying opening through the corrugated conveying pipe, and the clamping state of the cutting device is kept after a user cuts off a core rod; the angle of the air conveying opening is adjusted, glass fiber chippings and dust generated in the insulator core rod cutting process are vertically blown and swept on the cutting face, the situation that residues affect the follow-up installation sealing performance is avoided, and therefore the purpose that the device conveniently guarantees the insulator replacement accuracy and maintenance in an air blowing mode is achieved.

A thermal conductivity detector (1) is provided with: a cell block (2) provided with a measuring cell (10) in which a heating wire (12) for exchanging heat with a gas is arranged, the cell block (2) being provided with a cell inlet (11) for flowing the gas into the measuring cell (10) and a cell outlet (13) for flowing the gas out of the measuring cell (10); an outlet flow path (4) leading to the cell outlet (13) of the cell block (2); a buffer block (6) having a buffer space (14) in the inside and having a flow inlet (15) for flowing the gas into the buffer space (14) and a discharge outlet (16) for discharging the gas from the buffer space (14), the flow inlet (15) being fluidly connected to the outlet flow path (4); and a discharge member (8) holding a fluid resistance portion (20) for increasing a fluid resistance of the discharge outlet (16) and being installed to the buffer block (6) in a manner that the gas discharged from the discharge outlet (16) passes through the fluid resistance portion (20), the discharge member (8) being provided to be able to be detached from the buffer block (6) together with the fluid resistance portion (20).

A motorcycle with a single transmission breather that is mounted over the transmission case. Crank case gas passes through the breather. Oil separated from the breather drains back to a cavity under the breather. Gases separated in the breather travel through a breather hose to an airbox. The breather utilizes a sloped incline in order to prevent oil that separates out from pooling.

The invention relates to the technical field of aerospace power, in particular to a single-gas-path driving and fluidizing integrated compact type powder fuel supply device and a single-gas-path driving and fluidizing integrated compact type powder fuel supply method. The single-gas-path driving and fluidizing integrated compact powder fuel supply device comprises a powder storage cavity straight pipe section, a powder storage cavity contraction section, a gas cavity and a fluidizing gas supply device, the powder storage cavity contraction section and the gas cavity are arranged at the two ends of the powder storage cavity straight pipe section, and a rigid piston is slidably connected into the powder storage cavity straight pipe section; the rigid piston, the powder storage cavity straight pipe section and the gas cavity form a driving cavity, and the rigid piston, the powder storage cavity straight pipe section and the powder storage cavity contraction section form a fuel cavity; the fluidizing gas supply device comprises a gas supply structure arranged in the length direction of the straight pipe section of the powder storage cavity and a branch gas inlet structure arranged at one end of the gas supply structure, and the other end of the gas supply structure communicates with the driving cavity, so that gas in the driving cavity enters the fuel cavity through the fluidizing gas supply device and drives powder fuel to flow out from the two-phase outlet.

The invention relates to the technical field of power cables, and provides an anti-electromagnetic interference waterproof cross-linked polyethylene insulated power cable, which comprises a plurality of conductor cable cores, a shielding sleeve layer, an outer protective sleeve layer and an end sealing gas transmission mechanism, and is characterized in that the periphery of each conductor cable core is sleeved with an insulating protective sleeve group capable of transmitting gas; the insulation protection sleeve set comprises a plurality of gas transmission short pipes, the conductor cable core is arranged in the shielding sleeve layer, a water swelling rubber layer is arranged between the insulation protection sleeve set and the shielding sleeve layer, the shielding sleeve layer is sleeved with the outer protection sleeve layer, and the end sealing gas transmission mechanism can be arranged on one side of the outer protection sleeve layer in a sealed mode. And meanwhile, cooling gas can be conveyed into the gas conveying short pipe. According to the technical scheme, the problem that the anti-electromagnetic interference waterproof cross-linked polyethylene insulated power cable in the prior art is poor in heat dissipation efficiency in actual use is solved.

The invention relates to the technical field of automobile engineering, and discloses a composite sealing strip embedded corrosion-resistant light-weight vehicle door structure which comprises a vehicle door body, a vehicle door edge is arranged on the outer side of the vehicle door body in a surrounding and protruding mode, and a sealing strip assembly is arranged on the inner side of the vehicle door edge in a surrounding mode. Internal gas is bidirectionally shunted through a communicating groove and a vent groove, part of the gas flows into a buffer folding hose to enable the buffer folding hose to rapidly expand and extend, door closing impact energy is absorbed by means of the high resilience characteristic of foamed rubber, a traditional single buffer structure is replaced to realize energy shunting, hard contact force is greatly weakened, and abnormal sound is eliminated. The other part of gas drives sealing rubber extrusion blocks at the upper end and the lower end of a clamping block to expand, so that the sealing rubber extrusion blocks are tightly attached to a vehicle body door frame fitting block, and the defect of compression permanent deformation after a traditional single rubber strip is opened and closed for a long time is overcome in cooperation with the double-sealing effect that a sealing air bag is tightly attached after pressure relief through an exhaust hole.

The invention discloses a portable outdoor energy storage power box, and belongs to the technical field of energy storage equipment, the portable outdoor energy storage power box comprises a protection box body, the bottom end of the protection box body is provided with a bearing seat, the protection box body is internally provided with a connection box body, and the two sides of the connection box body are both provided with transverse limiting mechanisms; sockets are arranged at the positions, below the transverse limiting mechanisms, of the two sides of the connecting box body, a first longitudinal limiting mechanism is arranged at the top end of the connecting box body, and a shielding cover is arranged at the top end of the first longitudinal limiting mechanism. The piston sliding plate moves to drive gas in the protection box body, the gas is blown out through the flow guide pipe and the flow guide block, and the gas outlet directly faces the socket, so that the socket is cooled and dedusted, and the service life of the socket is prolonged; a first longitudinal limiting mechanism is convenient for a user to unfold a shielding cover through a third reset spring when the user pulls out the connecting box body so as to avoid the situation that the temperature of the connecting box body is too high to generate hidden dangers due to the fact that the connecting box body is directly irradiated by sunlight.

A fire suppression system for a vehicle includes a fire detection device, a tank, a nozzle, and an activator. The fire detection device is configured to detect a fire in a hazard area. The activator is configured to selectively release during a single-agent phase the fire suppressant contained in the tank such that after the first tank is substantially emptied at least a portion of the pressurized gas passes through the outlet of the nozzle and floods the hazard area.

The utility model relates to a filtering and cleaning module and clothes treating equipment, the filtering and cleaning module comprises a filtering module, a driving module and a first sealing ring, the filtering module comprises a filtering shell and a filtering piece, the filtering piece is arranged in the filtering shell and used for filtering gas passing through the filtering shell, and a via hole is formed in the filtering shell; the driving module comprises a driving motor assembly and a motor shell, and a rotating shaft of the driving motor assembly penetrates through the via hole; the first sealing ring sleeves the rotating shaft and is positioned between the motor shell and the filtering shell; at least one annular sealing convex rib surrounding the rotating shaft is arranged on the surface, facing the motor shell and / or the surface, facing the filtering shell, of the first sealing ring. According to the filtering and cleaning module provided by the invention, the reliability of the filtering and cleaning module is improved.

To provide a gas-liquid heat exchanger suitable for heat transport using thermoacoustic self-excited vibration.SOLUTION: A member 1 for a gas-liquid heat exchanger includes a body part 11 in which heat is exchanged between air introduced to inside and liquid introduced to inside, and the body part 11 has a shape of an approximately columnar body that has a first bottom surface 111 and a second bottom surface 112 disposed approximately in parallel with each other and that includes a plurality of holes 113 linearly communicating both of the bottom surfaces with each other. Gas G is introduced to the plurality of holes 113, and the plurality of holes are provided approximately in parallel in the height direction of the body part 11 (first direction D1) and are provided to form a plurality of rows along a predetermined direction approximately orthogonal to the first direction (second direction D2). The body part 11 has a shape including a plurality of slits 118 to which liquid is introduced. The slits 118 are linearly provided between the plurality of rows from one end side of the row in the body part 11 to the other end of the row of the body part 11 so as not to intersect with the holes 113.SELECTED DRAWING: Figure 1

The utility model discloses a sealing detection device for valve processing, which relates to the technical field of valve processing, and comprises a device main body, a first control valve, a base and a second pressure gauge, one side of the device main body is provided with an air pump, and the outside of the output end of the air pump is communicated with one end of the first control valve; the other end of the first control valve communicates with the interior of the base, gas can be pumped into the base through the gas pump, the gas enters the valve through a hole groove in the surface of the top of the base, then the first control valve is closed, and a cavity in the valve can maintain pressure; by observing whether the numerical values of the first pressure gauge and the second pressure gauge change or not, the sealing performance of the valve is judged, and then whether the sealing performance of the valve is qualified or not can be visually seen through the first pressure gauge and the second pressure gauge.

The invention discloses a compressed air energy storage and energy-saving impact rotation starting system, system and equipment and a medium, and belongs to the technical field of energy-saving impact rotation starting. The method comprises the steps that air is compressed through a compressor and then sent to a cooling heat exchanger to be cooled, and cooled air is obtained; the cooling gas in the cooling heat exchanger is compressed and then conveyed into the first gas storage chamber until the pressure of the first gas storage chamber is at the first rated pressure; cooling gas in the cooling heat exchanger transfers and controls the expansion machine at a second target rotating speed through a buffer module, so that the output power of the generator reaches a first initial power value; air in the first air storage chamber is released by opening the air inlet adjusting valve, and the air flow in the first air storage chamber is controlled until the output power of the generator reaches a first output power value; and adjusting the starting regulating valve according to a preset rate, monitoring instrument data, and finishing starting when the starting regulating valve is in a closed state and the power of the generator is stable. The problem that a traditional expansion machine is large in throttling loss is solved.

The invention discloses an airflow milling device for sintered neodymium-iron-boron permanent magnet materials, and relates to the technical field of airflow milling, the airflow milling device comprises a rotating box, the rotating box is rotationally sleeved with a circular ring frame, the circular ring frame is fixedly connected with a plurality of supporting legs, and the circular ring frame is fixedly connected with two fixing frames. Through the arrangement of the grinding unit, a compressor guides gas into a circular ring frame through a Y-shaped gas inlet pipe, then the gas enters a fixed shell through a vent hole and is sprayed out through a gas outlet hole, under the action of high-pressure gas flow, materials in a rotating box collide with one another to be ground, and a first motor is started to drive a driving shaft and a rotating gear to rotate; the rotating gear drives the circular rack, the rotating box and the fixed shell to rotate, so that materials can collide with the fixed shell, the pulverizing effect of the materials is improved, airflow sprayed out of the air outlet drives the materials to pass through the Y-shaped groove, then the narrow pipe effect can be formed, the materials can collide sufficiently, and the pulverizing effect of the materials is improved.

The utility model relates to the technical field of air quality monitoring, and discloses an indoor air quality multi-channel rapid monitor, comprising: a monitoring module comprising an instrument part and a detection part, the detection part comprising a mounting box arranged at the bottom of the instrument part, a plurality of air chambers uniformly arranged at the bottom of the mounting box along the left and right, the bottom of each air chamber being open, different types of sensors are respectively arranged in the sensors; the adjusting diffusion module comprises a ventilation box, the bottom of the adjusting diffusion module is provided with a plurality of air inlet channels, the top of the adjusting diffusion module is provided with an air replacement module, all the air chambers are arranged in the ventilation box, and air in the ventilation box is subjected to standing and free diffusion in the ventilation box after being replaced by the air replacement module and is detected through a sensor; the blowback ventilation module is arranged on one side of the ventilation box and used for carrying out blowback and replacement on gas in the ventilation box, and compared with the prior art, the detection device has the advantages that detection is carried out through gas replacement and gas diffusion, and the nitrogen blowback cleaning function is achieved.

The utility model discloses a highway bridge pavement water seepage detection device which comprises a water supply mechanism, the top of the water supply mechanism is fixedly provided with a water containing cylinder used for detecting water bearing, the water supply mechanism is fixedly provided with a balancing weight, and the top of the water supply mechanism is provided with an air escape valve in a penetrating mode. A jacking mechanism making contact with the top of detection water is slidably connected into the water containing barrel, and an identification mechanism facilitating observation of the water falling speed is arranged at the top of the water supply mechanism. The water supply mechanism is placed on the asphalt pavement needing to be detected, then the water supply mechanism is turned on to supply water, gas at the bottom of the water supply mechanism can be discharged through the gas release valve at the moment, then the water containing barrel is filled with the gas, and then the jacking mechanism falls down after water falls down. In this way, a user can observe the water falling position on the identification mechanism with the higher height according to the jacking mechanism, the detection device can detect the water seepage condition more conveniently, and detection is more accurate.

The invention discloses a waterproof device and method for a tail door controller for an automobile, and relates to the technical field of controllers. According to the technical scheme, the waterproof device comprises a controller shell, heat dissipation mechanisms are arranged on the two sides of the controller shell, a connector protection shell is fixedly connected to the rear end of the controller shell, and a dehumidification mechanism is arranged on the upper portion of the connector protection shell; according to the invention, after a data connector is inserted into the connector, a second motor is started to drive a worm and a first gear to rotate at the same time, and the worm rotates to drive a first rack to move, so that a sealing clamp is driven to be closed; the data line can be clamped while the exterior of the connector is closed, the first gear rotates to drive the pressing plate to move, the pressing plate moves to compress gas in the inflatable shell, the gas enters the sealed gas bag through the inflatable tube to drive the sealed gas bag to expand, and therefore a gap between the data head and the interior of the connector is filled.

The utility model relates to the technical field of surface processing, and discloses a novel portable plasma spraying device. The spraying device comprises a spraying gun and a spraying mechanism, the spraying mechanism is erected on the spraying gun, the spraying mechanism reduces the temperature of the spraying mechanism by accelerating heat dissipation of cooling liquid and reduces chippings splashing backwards, and a control switch is rotated to control gas flow so as to save gas use. After the gas tank is fixed through the connecting sleeve arranged at the lower end of the connecting pipeline, the connecting sleeve is rotated to enable the clamping block and the clamping groove to be clamped and fixed, so that gas in the gas tank enters the connecting pipeline through the vent hole, and on the contrary, the vent hole is blocked and fixed, and the gas in the gas tank is saved. The cooling groove is connected with the heat dissipation pipe, so that water dissipates heat through the heat dissipation pipe, meanwhile, the heat dissipation fan is arranged inside to accelerate heat dissipation of cooling liquid, and the baffle is arranged at one end of the spray head to reduce backward splashing chippings.

The present invention relates to a system for providing a bioink in the form of a spray. The system comprises: a) at least two spray configured to receive at least two syringes comprising a nozzle each, each syringe configured to receive one or more components of the bioink; b) a housing, configured to comprise the at least two spray heads and comprising at least two housing nozzles, the housing nozzle comprising a diameter bigger than the diameter of the spray head nozzle; c) a gas inlet connected to the housing configured to receive a gas; and d) a control system comprising at least two valves, each valve associated to a housing nozzle and configured to control the flow of the gas through each housing nozzle. Each valve is further configured to control the provision of the one or more components of the bioink from each syringe, by controlling the flow of gas through its housing nozzle.