47results about How to "There will be no air leakage" patented technology

The invention discloses a ridge pressing and membrane covering device. The ridge pressing and membrane covering device comprises a machine frame, a mulching membrane laying device, first-stage soil covering devices and second-stage soil covering devices, wherein the mulching membrane laying device, the first-stage soil covering devices and the second-stage soil covering devices are installed on the machine frame. The machine frame walks along a ridge under the traction of a traction device. The mulching membrane laying device is used for flat laying a mulching membrane on the ground under themachine frame in the walking process of the machine frame. The two first-stage soil covering devices are installed on the two sides of the machine frame and used for covering the two sides of the laidmulching membrane with soil. The two second-stage soil covering devices are installed on the two sides of the machine frame and used for covering the mulching membrane with the soil piled by the first-stage soil covering devices. Each first-stage soil covering device comprises soil covering blades which are installed on the machine frame through fixing rods. Each second-stage soil covering devicecomprises a soil conveying box, a spiral conveying rod and a driving device. The spiral conveying rod is vertically installed in the soil conveying box and driven by the driving device to rotate. Theridge pressing and membrane covering efficiency is high, the mulching film covering integrity and tightness are ensured, and meanwhile operation time is saved.

The invention relates to the field of medical instruments, and provides an airbag pressure management device. The device comprises an airbag interface and an inflation interface which are communicated through a connecting pipe; the inflation interface and an inflation device can be connected in an on-off cooperation mode, and the airbag interface and an airbag inflation valve can be connected in an on-off cooperation mode; the connecting pipe is provided with a pressure monitoring module. Due to the fact that the airbag interface and the inflation interface of the device both can achieve an on-off function on the condition that it is guaranteed that an airbag does no leak air in the state that the airbag inflation valve and the inflation device are connected, the device not only can monitor the pressure of the airbag and supplement air at any time but also can ensure leakproofness of the device in the monitoring and air supplementing process, the monitoring process is simple and efficient, and the air leakage phenomenon cannot occur; the pressure monitoring module can adopt parts such as a pressure sensor, and therefore a more accurate and more reliable monitoring result is achieved.

The invention discloses a check drain valve of a heat accumulator, relating to the technical field of waste heat recovery of flue gas of an industrial kiln. The check drain valve comprises a sealing cylinder, wherein the top and the bottom of the sealing cylinder are provided with a taper cavity respectively; a floating ball is arranged in the sealing cylinder; the upper end of the sealing cylinder is provided with a liquid collection cone for connecting the heat accumulator; and the lower end of the sealing cylinder is provided with a connecting end for connecting a rotary liquid sealing pipe. The liquid collection cone at the upper end of the check drain valve is connected with flue gas waste heat recovery equipment, and the lower end of the check drain valve is connected with the rotary liquid sealing pipe; since liquid is filled in the rotary liquid sealing pipe in use, liquid also exists in the sealing cylinder communicated with the rotary liquid sealing pipe; and under the action of the floating ball, no phenomenon of air leakage of a drainage system is guaranteed.

The invention discloses a chemical pressure tank. The chemical pressure tank comprises a tank body, a cover plate, a sealing column, a rotating sleeve and fastening bolts, wherein the cover plate is arranged on the tank body through bolts, the sealing column is arranged between the cover plate and the tank body in a penetrating mode, and the rotating sleeve is integrally arranged outside the top end of the sealing column; fixing blocks are arranged at the outer surface of the tank body in a welding mode, mounting sleeves are arranged outside the fixing blocks in a clamped mode, and the fixingblocks and the mounting sleeves are connected through the fastening bolts; and a fixed sealing ring is fixedly arranged at the outer position of the upper part of the sealing column, and a squeezing sealing ring is arranged below the fixed sealing ring. In the using process of the chemical pressure tank, the pressure tank can be placed in the vertical direction, and meanwhile, the tank body can also be conveniently placed in the horizontal direction, so that the whole tank body is very convenient to place, the tank body can be flexibly placed according to the space size of a placing position,and therefore the flexibility is better.

The invention provides a multifunctional silk quilt and a manufacturing method thereof. The multifunctional silk quilt comprises a silk quilt inner, a quilt cover, a breathing powder physical therapy silk filling layer, a tail folding pressing layer, a first wind shielding layer and a second wind shielding layer; the silk quilt inner is located in the quilt cover and fixedly connected with the quilt cover, the breathing powder physical therapy silk filling layer is located between the silk quilt inner and the quilt cover and fixedly connected with the silk quilt inner and the quilt cover, the tail of the quilt cover is provided with the tail folding pressing layer, the front end of the quilt cover is provided with the first wind shielding layer and the second wind shielding layer, the tail folding pressing layer, the first wind shielding layer and the second wind shielding layer are fixedly connected with the quilt cover, the middle of the first wind shielding layer is provided with a first arc-shaped through opening, and the middle of the second wind shielding layer is provided with a second arc-shaped through opening. According to the multifunctional silk quilt and the manufacturing method thereof, it is guaranteed that the multifunctional silk quilt is airless and good in heat preservation property when the multifunctional silk quilt is used through the tail folding pressing layer, the first wind shielding layer and the second wind shielding layer; in addition, the humidity can be adjusted through the breathing powder physical therapy silk filling layer, so that the comfortableness is higher.

The invention relates to a household gas pipeline timer. The household gas pipeline timer comprises a shell, wherein the shell is internally provided with an air inlet channel and an air outlet channel which are corresponding to each other; the channel wall of the air inlet channel is provided with a first connecting hole, the channel wall of the air outlet channel is provided with a second connecting hole, and a cavity is arranged above the air inlet channel and the air outlet channel; the cavity is internally provided with a timer, a rotary knob structure is arranged on a position, which is located at an opening of the cavity, above the timer, and a connecting device for controlling the communication of the first connecting hole of the air inlet channel and the second connecting hole of the air outlet channel is arranged between the space below the timer and the space above the air inlet channel and the air outlet channel. The household gas pipeline timer provided by the invention has a dual-seal guarantee, the sealing effect is good, and when the boiling food soup or boiling water on a gas stove overflows to extinguish the flames, the gas can still automatically cut out, thus the gas is prevented from leaking.

The invention relates to a pipe connector with self-sealing and quick insertion and extraction functions. The pipe connector comprises a socket and a plug. An air channel is formed inside the socket, a mobile block and a movable door are arranged at an inlet of the air channel, and a centre is arranged at an outlet of the air channel and connected with a sliding block. A first compression spring is arranged between the centre and the sliding block. An outer sleeve is arranged at one end of a base. One end of the centre extends into the outer sleeve which is provided with a clamping groove. One end of the plug is provided with an upper groove matched with the outer sleeve. An air flow channel is formed inside the plug. A ventilation block is arranged at one end of the plug and provided with a groove matched with the head of the centre. A through hole is formed in the ventilation block. A second compression spring is arranged inside the socket. A movable head is arranged outside the socket and provided with a clamping pin matched with the clamping groove. By means of the pipe connector, a pipe can be sealed after being inflated, and air leakage is avoided after the socket and the plug are disconnected.

The invention discloses a fecal incontinence drainage control device. The device comprises a cannula, a first air bag cavity, an inflation control structure, a control valve structure and an air inletstructure, wherein a top end of the cannula is provided with a fecal inlet, an outer surface of an upper end of the cannula is provided with a side hole, the first air bag cavity is fixedly arrangedoutside the cannula, a second air bag cavity is arranged above the first air bag cavity, and the control valve structure is arranged inside a tail end of the cannula, the tail end of the cannula is connected with a nut, a tail end of a drainage bag is connected with a defecation tube, and an outer surface of the defecation tube is sleeved with a defecation control structure. The device can be clamped in anus of a patient through the expansion of the first air bag cavity and the second air bag cavity, so that the device can be stably installed in the anus of the patient, discomfort of the patient caused by a fact that long foreign matters are inserted into rectum of the patient can be avoided, and comfort of the patient in use can be improved through the expansion and clamping of the air bag structure.

The invention relates to a persimmon peeling machine assembly, in particular to a vacuum adsorption device for a persimmon peeling machine. The vacuum adsorption device comprises a support. A motor is arranged on the support. A rotary shaft is concentrically connected to an output shaft of the motor. A suction cup is arranged at the outer end of the rotary shaft, and the suction cup is connected with a vacuum generating device through a vacuum pipeline. Persimmons can be fixed through the adsorption device, peeling quality can be guaranteed, safety performance can be improved, and labor intensity can be lowered.

The dust removal device comprises a dust suction hood, a pneumatic conveying pipeline, an adhesive tape press-sealing type synchronous transfer system and dust removal equipment, the adhesive tape press-sealing type synchronous transfer system comprises an air conveying opening, a movable air bellow, a ventilation groove, a ventilation groove open hole, a rubber belt and a roller, the movable air bellow is in an inverted-U shape and movably installed on the upper surface of the ventilation groove, and the movable air bellow is in an inverted-U shape and movably installed on the lower surface of the ventilation groove. The ventilation groove openings are located in the upper surfaces of the ventilation grooves and are connected with the movable air bellow and the ventilation grooves, and the distance between the ventilation groove openings is smaller than the length of the movable air bellow so that it can be guaranteed that the movable air bellow at least covers one ventilation groove opening at any time; more than one ventilation slot opening is always communicated with the movable air bellow and the ventilation slot, and the movement direction of the rubber belt is changed by utilizing the roller, so that the rubber belt at the place where the movable air bellow passes is lifted, the rest part of the rubber belt presses and seals the ventilation slot opening, and the smoothness of dust removal and ventilation is ensured under the condition of continuous discharging; meanwhile, the ventilation groove opening is adopted to replace a belt gland sealing mode adopted at the upper part of the ventilation groove, so that the sealing effect is better, the dust removal effect can be obviously improved, and the dust removal energy consumption is reduced.

The invention discloses a dechlorinating and desulfurizing device used in an aromatization process. The device comprises a first input pipe, a second input pipe, an output pipe and a reaction kettle,wherein the first input pipe, the second input pipe and the output pipe are respectively communicated with the reaction kettle, check valves are arranged on the first input pipe, the second input pipeand the output pipe, a first shell with an opening in one end is arranged on the first input pipe, the device further comprises a third input pipe connected with the first input pipe through threads,the third input pipe is provided with a second shell with an opening in one end, a plurality of telescopic rods fixedly connected with the second shell are arranged on the inner wall of the second shell, the device further comprises a pressing plate with a through hole formed in the middle, the pressing plate is fixedly connected with the telescopic end of the telescopic rod, a refrigerating mechanism is arranged in the second shell, the outer wall of the first shell is fixedly connected with a plurality of first through pipes communicating with the first shell, and the outer wall of the second shell is fixedly connected with a plurality of second through pipes communicating with the second shell. According to the invention, with the dechlorinating and desulfurizing device, the sealing performance of the pipeline joint can be effectively improved, the pipeline members can be rapidly separated, and the disassembling efficiency is improved.

The invention discloses an intelligent breathing training device comprising a case, a valve head cover, a motor, a gear drive mechanism and a valve assembly. The valve head cover is mounted at one end of the case; the motor and the gear drive mechanism are mounted inside the case and the motor is mechanically connected with the valve assembly through the gear drive mechanism; the valve assembly is mounted inside the valve heat cover. Since valve baffles of the device are fixed on a valve press plate and a valve bracket, the valve baffles are attached to the valve press plate or the valve bracket so as to seal the valve baffles no matter inhaling or exhaling, gas can only come in and out through the valve opening to realize exhale and inhale; besides, the valve opening is in the middle of an air passage, air is concentrated so that air resistance during inhaling or exhaling is small and influence on monitor precision is reduced. The valve press plate and two valve baffles are tightly matched so that air leakage will not occur and the monitor precision is high.

The invention belongs to the technical field of production of hollow composite products, and discloses a manufacturing method for a core mold air bag. The manufacturing method comprises the air bag manufacturing step and the core mold manufacturing step; in the air bag manufacturing step, a dry latex mold is formed in a mold in a latex coating mode through a latex coating machine, and then is vulcanized to form a soft latex air bag with a hollow inner hole; and in the core mold manufacturing step, the hollow inner hole of the soft latex air bag is filled with a foaming material, the foaming material is foamed in the soft latex air bag to form a foamed core mold, and then the core mold air bag composed of the soft latex air bag and the foamed core mold is obtained. According to the manufacturing method, firstly, the soft latex air bag is manufactured, then the soft latex air bag is filled with the foaming material to be foamed to form the foamed core mold, in this way, a high vulcanization temperature of the soft latex air bag can be set in the vulcanization formation process of the soft latex air bag, on the one hand, the forming time of the soft latex air bag can be greatly shortened, on the other hand, the soft latex air bag can be completely vulcanized, so that the soft latex air bag does not absorb moisture, and therefore the stability and the reliability of the physical performance of the hollow composite products are guaranteed.

The invention belongs to the technical field of hoisting equipment and provides a pneumatic hoist which comprises a pneumatic part, a transmission part and a lifting part. The pneumatic part comprises a blade type pneumatic motor, a control valve and a brake mechanism. The control valve comprises a valve sleeve, a valve element and a valve base, wherein the valve sleeve is provided with a first air inlet hole, a first air outlet hole and a second air outlet hole, and the first air outlet hole and the second air outlet hole are separately located on the two sides of the first air inlet hole; the valve element comprises two annular protrusions which are arranged on the valve element and matched with the valve sleeve, and a first air groove is formed between the two annular protrusions; pistons are arranged at the two ends of the valve element; the valve base is internally provided with a mounting hole, the valve sleeve is fixedly arranged in the mounting hole, and the valve element is slidably arranged in the pistons through the protrusions; the two ends of the mounting hole are closed; and one face of the valve base is provided with two second air inlet holes communicating with the closed end of the mounting hole and a cavity between the pistons, and a power air hole communicating with the first air inlet hole, and the other face of the valve base is further provided with a forward rotating air outlet hole and a backward rotating air outlet hole separately communicating with the first air outlet hole and the second air outlet hole.

The invention discloses a breather valve and an application method thereof. The breather valve comprises a breather tube, a valve plate and a return spring; the valve plate is disposed within the breather tube; the return spring used for returning the valve plate is disposed within the breather tube. The return spring allows the valve plate to be returned in time when a patient breathes, sealing is insufficient, and no leakage occurs.

The invention discloses a special joint capable of performing exploring or guiding a cannula through a laryngeal mask fiberbronchoscope during mechanical ventilation. The joint structurally comprisesa joint body, a breathing machine connecting pipe and a laryngeal mask connecting pipe. The special joint is characterized in that a breathing connecting pipe is fixedly connected to the right side ofa joint body, the laryngeal mask connecting pipe is arranged at the bottom of the joint body, a movable sealing cover is arranged at the top of the joint body, a V-shaped anti-counter-flow valve is arranged at the portion, close to the bottom, inside the body, an iris shaped high-elasticity sealing membrane is arranged at the portion, close to the top, inside the body, and a center pupil shape expansible hole is formed in the iris shaped high-elasticity sealing membrane. According to the special joint capable of performing exploring or guiding the cannula through the laryngeal mask fiberbronchoscope during mechanical ventilation, the sealing state can be kept under the high ventilation pressure, no air leakage phenomenon can appear, and the special joint is simple in structure and high inpracticability.

The invention relates to a wear-resisting ceramic pneumatic side sliding valve, which comprises an upper valve body, a lower valve body, an air cylinder, an air cylinder support, a sealing member, a rotating shaft and a lever, wherein through arranging a ceramic balancing point side sliding plate between the upper valve body and the lower valve body, the rotation of an air cylinder shaft drives the rotating shaft to rotate to ensure that the lever connected with the rotating shaft and the ceramic balancing point side sliding plate rotate together with the rotating shaft, the horizontal action force generated by the sliding of a ceramic balancing point side can effectively push and crape residues; meanwhile, an assisting compensating spring is adopted to ensure that the ceramic balancing point plate flexibly rotates under the action of floating force, which effectively prevents from phenomena of stoppage, biting and blockage caused by sediment scaling so as to thoroughly solve the problem that the ceramic balancing point plate can not normally act.

The invention discloses a battery car steering wheel cover, which comprises a cover body. An operation cavity is formed in a windproof cover, the left end wall of the operation cavity is provided witha brake cover communicating with the outside, and when moving rightwards, a push rod drives a fourth gear and a bobbin to rotate. According to the battery car steering wheel cover, a handlebar and abrake can be fixed, meanwhile when the battery car steering wheel cover is used by people, wind can be blocked outside completely, the situation of wind leakage is avoided, thus during riding, hands of a rider are not frozen, through mechanical transmission fit, the possibility of errors of the battery car steering wheel cover is lowered, the cost of the battery car steering wheel cover is lowered, and energy consumption is reduced.

The invention discloses an anti-leakage gas discharging device for coal mining. The device comprises a machine seat, a gas pump, a gas concentration sensor and a blower, wherein a support is fixed tothe upper end surface of the machine seat; a first gas delivery pipe is connected to the gas pump; the blower is fixed on the upper end surface of the support; a second gas delivery pipe is connectedto the other end of the gas pump; a first flange is connected to the first gas delivery pipe; the first gas delivery pipe is connected with the gas pump through O-shaped rings; fixing seats are mounted on the gas pump; the movable rings are connected with clamping blocks through first fixing shafts; second fixing shafts are connected to the clamping blocks; and the bottom of each the second fixingshaft is mounted at the top of each the fixing seat. The anti-leakage gas discharging device for coal mining can recycle the gas, so that the emission of greenhouse gas is reduced; and meanwhile, thegas pump is firmly connected with the first gas delivery pipe, so that the gas pump is connected with the first gas delivery pipe without air leakage.

The invention belongs to an energy-saving boiler in the technical field of boilers. The energy-saving boiler is mainly characterized in that a totally enclosed and forced air blast combustion is carried out in the running process of the boiler so as to improve combustion efficiency, reduce heat loss, and particularly decrease air intake flow and reduce fuel consumption in the banking of the boiler.

The invention discloses a dip-coating drying production line tail gas treatment device which comprises a first tail gas treatment box, a first connecting pipe and a second tail gas treatment box, when tail gas generated after coating drying enters the first tail gas treatment box, an organic solvent in a spraying box is sprayed out of a spray head, and therefore organic volatile matter in the tail gas is filtered out; when the remaining tail gas continues to enter the second tail gas treatment box, toxic gas soluble in water is filtered out through water sprayed out of the second tail gas treatment box, and finally the tail gas is further purified through activated carbon in the filter layer; and when a water pump is started, an organic solvent sprayed from the spray head enters a collecting tank, and then enters the spraying box again through a water inlet pipe and a water outlet pipe, so that cyclic utilization of the organic solvent and water in the first tail gas treatment box and the second tail gas treatment box is realized.

The invention discloses a ridge pressing and film covering device, which comprises a machine frame, a film laying device installed on the machine frame, a primary soil covering device and a secondary soil covering device, and the frame walks along the ridge under the traction of a traction device , the mulching film device is used to spread the mulch film on the bottom surface under the frame during the frame walking process, and there are two first-level soil covering devices, which are respectively installed on both sides of the frame for covering the soil on the The two sides of the plastic film have been laid, and there are two secondary soil covering devices, which are respectively installed on both sides of the frame, and are used to cover the soil piled up by the primary soil covering device on the plastic film; the primary soil covering device includes soil covering blades, The soil covering blade is installed on the frame through the fixed rod. The secondary soil covering device includes a soil conveying box, a screw conveying rod and a driving device. The spiral conveying rod is vertically installed in the soil conveying box and driven to rotate by the driving device. The invention of ridge pressing and film covering has high efficiency, which ensures the completeness and tightness of film covering and saves working time at the same time.

The invention discloses a sealing structure of a rotary swing mechanism of a vertical roller mill. The sealing structure comprises a mounting outer cylinder fixedly mounted on a vertical roller mill shell, a mounting inner cylinder fixedly mounted on the rotary swing mechanism of the vertical roller mill and a C-shaped seal ring arranged between the outer cylinder and the inner cylinder. It can be ensured that the rotary swing mechanism of the vertical roller mill mounted on the mounting outer cylinder is immobile in the swing process by the C-shaped seal ring, so that it is further ensured that an air leak condition in a working process of the rotary swing mechanism of the vertical roller mill is avoided, and the sealing structure has a longer service life.

The invention provides an air supply outlet of a purification system. The air supply outlet is convenient to install and excellent in filtering effect and comprises a cylindrical shell, a plurality of buckles and a filter, wherein an air inlet shell is arranged at the upper part of the cylindrical shell; an air inlet is formed in the upper end of the air inlet shell; a flange is formed on the lower periphery of the air inlet shell; a filter accommodating shell is connected onto the flange; the buckles are mounted on the lower periphery of the filter accommodating shell of the shell; each buckle comprises a rotating shaft and a clamping head; the rotating shafts are connected with the lower periphery of the filter accommodating shell; the clamping heads are connected with the rotating shafts and can rotate around the rotating shafts; the filter is arranged in the filter accommodating shell of the shell and is fixed between the flange and the buckles.

The invention relates to the technical field of refrigerator accessory production, and discloses a production preparation method of a durable refrigerator refrigeration pipeline. The method comprises the specific steps of 1, selecting pipes, 2, cleaning pipes, 3, sealing and welding one end of each pipe,4, injecting gas into the pipes, 5, sealing and welding the other ends of the pipes, 6, bending and forming the pipes, and 7, after manufacture, putting the pipelines into a warehouse for storage. The production preparation method of the durable refrigerator refrigeration pipeline can ensure that the phenomenon of air leakage does not occur when a refrigeration evaporator is prepared, the preparation efficiency of the refrigeration evaporator is high, and the production benefit of enterprises is improved.