148results about How to "Improve the pressure effect" patented technology

The invention discloses a coal body permeability characteristic testing system. The coal body permeability characteristic testing system comprises an electronic universal testing machine, a permeability characteristic testing device, a vibration detecting device, a first gas system, a confining pressure hydraulic system and a computer, wherein the permeability characteristic testing device consists of a lane simulating mechanism and a lane ambient environment simulating mechanism; the lane simulating mechanism comprises a baffle, a breathable plate, a coal rock sample and a U-shaped clamping sleeve; the lane ambient environment simulating mechanism comprises a base, a cylinder tube, a lower pressing head, an upper half concave surface pressing head, an upper half convex surface pressing head and a piston; the first gas system comprises a first gas tank, a first pressure reduction valve and a first gas pressure meter; the confining pressure hydraulic system comprises a confining pressure liquid tank, a hydraulic pump, a unidirectional valve, a confining pressure hydraulic meter and a confining pressure liquid overflow valve. The invention also provides a coal body permeability characteristic testing method. According to the coal body permeability characteristic testing system and method, the axial pressure, the confining pressure and the methane gas pressure are controllable, the gas permeability characteristics influenced by disturbance of a lane coal rock body and a coal mine deep part coal rock body can be tested, and the testing precision is high.

The invention discloses a carbon fiber gas cylinder detection line and a carbon fiber gas cylinder detection method. The detection line includes, in a front-to-back arrangement manner, a water pressure test apparatus, a water pressure auxiliary test apparatus and an air tightness test apparatus. The water pressure test apparatus includes a test rack, a test operation bench, a pressurizing apparatus, a test case installed on the test rack, and test trolleys for stably placing a plurality of to-be-tested gas cylinders. The water pressure auxiliary test apparatus includes a gas cylinder fixture, a transporting trolley, and a gas cylinder water-pouring-away and drying device. The air tightness test apparatus includes an air tightness detection apparatus and a second air supply apparatus for supplying air to the to-be-tested gas cylinders. The air tightness test apparatus is in a cabinet structure or a ground trough structure. The detection method includes the steps of 1) water pressure test; 2) water pouring-away and drying treatment; and 3) air tightness test. The detection line is reasonable in design and simple in operations, is good in use effects, and can easily and quickly complete water pressure test and air tightness test for a plurality of carbon fiber gas cylinders.

The invention discloses an automatic detection line and detection method of a carbon fiber gas bottle. The detection line comprises a water pressure testing device, an auxiliary water pressure testing device, a bottle valve loading and unloading machine and an air tightness experiment device, which are arranged from front to back, wherein the water pressure testing device comprises a testing rack, a testing operation platform, a pressurizing device, a testing box and a testing trolley; the auxiliary water pressure testing device comprises a gas bottle clamp, a conveying trolley, and gas bottle water pouring and drying treatment equipment; the bottle valve loading and unloading machine comprises a bottle valve loading and unloading rack, a control cabinet, a gas bottle fixing mechanism and a bottle valve screwing mechanism; the air tightness experiment device comprises an air tightness testing device and a second gas supplying device for supplying gas to a plurality of gas bottles to be tested. The detection method comprises the following steps: 1, testing water pressure; 2, carrying out water pouring and drying treatment; 3, assembling a bottle valve; 4, testing air tightness. The automatic detection line provided by the invention is reasonable in design, simple to use and operate and good in use effect, and can be used for simply, conveniently and rapidly finishing water pressure testing and air tightness testing processes of the plurality of carbon fiber gas bottles.

The invention discloses a seedling-raising disk substrate cylinder-type punching and indenting device. The device comprises a cylinder, a cylinder rotary shaft, a bearing base, a bearing rack and a bracket, wherein the axis of the cylinder rotary shaft coincides with the axis of the cylinder, and the cylinder rotary shaft is fixedly connected with the cylinder, spokes which are parallel to the cylinder rotary shaft are arranged on the outer surface of the cylinder at equal intervals, and each spoke is provided with an indentation head; and both ends of the cylinder rotary shaft are inserted into the bearing base, the bearing base is fixed on the bearing rack by bolts, the bearing rack is fixed on the bracket, and the bracket is fixedly arranged on both sides of a seedling-raising disk streamline. Compared with the prior art, the seedling-raising disk substrate cylinder-type punching and indenting device has the advantages that the cylinder adopts a design of spokes and is light; and the indentation heads are fixed by detachable bolts, so the spacing of the indentation heads in any direction can be adjusted, the punching and indenting are facilitated, good punching and indenting effects are achieved, and the device meets agricultural technology requirements of various crops.

The invention discloses a coal and gas outburst simulation system which comprises an electronic universal testing machine, an outburst simulation device, a gas system, a confining pressure hydraulic system and a computer, wherein the outburst simulation device consists of a lane side simulation mechanism and a lane side surrounding environment simulation mechanism; the lane side simulation mechanism comprises a baffle, a ventilating plate, a coal rock sample and a U-shaped clamping sleeve; the lane side surrounding environment simulation mechanism comprises a base, a cylinder, a cylinder cover, a lower pressing head, an upper half concave pressing head, an upper half convex pressing head and a piston; the gas system comprises a gas tank, a pressure reduction valve and a gas pressure meter; the confining pressure hydraulic system comprises a confining pressure hydraulic box, a confining pressure liquid flow-in pipe, a hydraulic pump, a check valve, a confining pressure liquid overflow pipe, a confining pressure hydraulic pressure gauge and a confining pressure liquid overflow valve. The invention also provides a coal and gas outburst simulation method capable of simulating coal and gas outburst without disturbance influence and under disturbance influence. The system and the method which are disclosed by the invention can really reflect a coal and gas outburst process of a coal mine and are high in practicability and favorable for popularization and use.

The invention discloses a surrounding type blowing dust removal device. The surrounding type blowing dust removal device comprises a blowing gas delivery pipe, a control valve, a rotating joint and a blowing pipe, wherein a plurality of nozzles are arranged on the blowing pipe; the control valve is arranged at the lower part of a filter element of a dust collector through the rotating joint. The heat-expansion and cold-contraction characteristic of metal is utilized, dusty gas is taken as gas for dust removal, and gas back spraying rotation is adopted, so that dust removing is well realized, the cost is low, the equipment is safe and reliable and long in operation cycle, the dust removal efficiency of the filter element is improved by more than 5%, and the operating cost is reduced by 10%; the surrounding type blowing dust removal device has excellent economic benefit, develops a new way in the aspect of dust removal for the filter element, and has excellent popularization and application value.

The invention discloses a sand-proofing valve comprising a valve body, a valve seat and a gate. A cavity and a medium flowing channel are arranged in the cavity. The gate is located in the gate. The valve seat comprises two inner valve seats and two outer valve seat; the two outer valve seats are arranged in the flowing channel in an embedded manner, and the two inner valve seats are arranged in the two outer valve seats in an embedded manner and are fixed on two sides of the gate. The lower portions of the two inner valve seats extend vertically to form sand-proofing baffles used for sealing a diversion hole of the gate. A baffling ring is fixed at the connection of the outer valve seats and the inner valve seats. By the aid of the sand-proofing valve, sand and impurities can be prevented from entering the cavity, and service life of the valve can be prolonged.

The invention relates to a fastening system in a KG combined tension belt, which belongs to a medical apparatus used for orthopedics department and particularly relates to a fastening system in a hollow screw and steel cable combined tension belt. A patella fracture is presently fastened by a tension belt through steel pins and steel wires (cables), which has the following defects: (1) the steel pins are easy to bend due to stress in a horizontal direction;(2) the steel pins are easy to withdraw, and the steel wires (cables) wound around the steel pins slip off; (3) the tails of the steel pins stimulate the soft tissue; (4) and the longitudinal stress is small, the bone stump has a gap, which is not beneficial to fracture healing. After two groups of opposite hollow screws are sheathed and overlapped, the steel cables are used for bundling, so that the patella is oppositely stressed in a sliding mode. The invention has the technical points that sliding combination has small resistance, the sagittal plane is vertically stressed, and excellent stressing effect is is beneficial to fracture healing; the design of screw heads and fillisters prevents the steel wires from being cut; the design of an external thread at the tail prevents the screws from withdrawing and is convenient for taking out; and the round screw heads reduce stimulation to the skin.

The invention provides a construction process of ultra-light aggregate foam concrete, which belongs to the technical field of construction methods of building materials, and comprises the following steps: step S1: preparing foam concrete; step S2: combining the foam concrete prepared in step S1 with ultra-light The aggregates are transported to the mixing mixer for stirring and mixing to obtain ultra-light aggregate foam concrete; step S3: directly pump the ultra-light aggregate foam concrete prepared in step S2 to the operation area. The invention not only solves the problems of easy floating of ultra-light aggregates, difficulty in wrapping, and uneven mixing, but also enables uniform mixing of ultra-light aggregates and foamed concrete, and can significantly increase the blending amount of ultra-light aggregates, The addition of ultra-light aggregate can reach more than 80%.

The invention discloses a carbon fiber cylinder detection system and method. The detection system comprises a hydraulic pressure tester, a hydraulic pressure assisted tester and a tightness tester; the hydraulic pressure tester comprises a test rack, a test operating table, a pressurizing device, a test case mounted on the test rack and a test cart for multiple cylinders to be tested to be placed steadily on; the hydraulic pressure assisted tester comprises a cylinder clamp, a conveying cart and a cylinder emptying and drying apparatus; the tightness tester comprises a tightness test unit and a second gas supply device supplying gas to multiple cylinders to be tested, and the tightness test unit is a cabinet type tightness test unit or a trough type tightness test unit; the method comprises the steps: first, hydraulic pressure testing; second, emptying and drying treatment; third, tightness testing. This system is reasonable in design and simple to operate and effective to use and enables the hydraulic pressure test and tightness test process of multiple carbon fiber cylinders to be finished simply and quickly.

The invention discloses a construction method of a large-span continuous beam closely next to an existing line deep water foundation. The large-span continuous beam to be constructed is a reinforced concrete box beam located on one side of an existing railway line, and is formed by splicing two side-span beam segments, a middle-span beam segment and two pier top beam segments. The construction method of the large-span continuous beam to be constructed comprises the steps that 1, bridge piers are constructed; 2, the pier top beam segments are constructed, specifically, pier top brackets are installed and pre-pressed, formworks are erected on the pier tops, and concrete is poured to the pier top beam segments; and 3, side-span and middle-span closure construction is carried out, specifically, after construction of the two pier top beam segments is completed, closure construction is carried out on the middle-span beam segment and the two side-span beam segments through a hanging basket. According to the method, the steps are simple, design is reasonable, construction is easy and convenient, the using effect is good, construction of the large-span continuous beam closely next to the existing line deep water foundation can be completed easily, conveniently and quickly, and the construction process is safe and reliable.

The invention provides a pressure sampling head of a Pitotbar flow sensor. A cylindrical upper joint perpendicular to the axis of the pressure sampling head is arranged at the upper end of the pressure sampling head; a total pressure channel and a static pressure channel are arranged in the pressure sampling head; a total pressure channel opening and a static pressure channel opening are arrangedat the upper end of the pressure sampling head; a drum-shaped column is arranged on the lower section of the pressure sampling head; inclined surfaces are respectively arranged between two arc-shapedsurfaces of the drum-shaped column and the lower end surface of the drum-shaped column; a total pressure hole connected with the total pressure channel is formed on one inclined surface, and a staticpressure hole connected with the static pressure channel is arranged on the other inclined surface; and the axes of the total pressure hole and the static pressure hole are positioned on the same straight line and perpendicular to a pressure sampling head body. The drum-shaped column is arranged on the lower section of the pressure sampling head, the inclined surfaces are respectively arranged between the two arc-shaped surfaces of the drum-shaped column and the lower end surface of the drum-shaped column, the total pressure hole connected with the total pressure channel is formed on one inclined surface, the static pressure hole connected with the static pressure channel is arranged on the other inclined surface, and the axes of the total pressure hole and the static pressure hole are positioned on the same straight line and vertical to a pressure sampling head body. When the pressure sampling head is in use, the pressure sampling effect is good, and the accuracy degree and the precision degree are high.

The invention discloses a leg rehabilitation instrument, which comprises a machine body, a motor, a support frame, a power supply device and a control device, wherein the machine body comprises a pedaling plate, a protection tool, an electrode plate and a resistance regulator; the pedaling plate is connected with the motor, and is driven by the motor to rotate; the resistance regulator is electrically connected with the control device and prevents the rotation of a motor fly wheel; the lower limb of a patient is limited and fixed by the protection tool; the electrode plate is fixed onto the inner side of the protection tool and is in contact with and connected with the lower limb of the patient; the support frame comprises a vertical rod, a first circular ring and a second circular; a plurality of first safety belts for fixing the waist of the patient are arranged on the first circular ring; a plurality of second safety belts for fixing the armpit and the shoulder of the patient are arranged on the second circular ring. The leg rehabilitation instrument has the advantages that the muscle equal length contraction training, passive training, active training and load bearing trainingcan be performed by the patients; various training measures are used for performing comprehensive rehabilitation on the sick limbs; the sick limbs are rehabilitated and trained from the first stage inthe whole process; the best sick limb rehabilitation effect can be reached.

The invention discloses a pressure dressing device for breast surgery. The pressure dressing device for breast surgery comprises a waistcoat type body and hemispheric air bags which are arranged on the body and can cover left and right breasts respectively, wherein each air bag is composed of a plurality of inflating units which are not communicated with one another, and each inflating unit is provided with an inflating inlet; as each air bag is divided into a plurality of units, the inflating unit corresponding to a wound can be inflated independently, thus the compressed air is saved and the pressurizing effect can be ensured; in addition, a rigid interlayer is arranged on the outer surface of each air bag, so that the air pressure in the air bag is ensured to be applied to the wound position and the pressurizing effect is better.

The invention discloses a filling type perineum pressure dressing bag. The filling type perineum pressure dressing bag comprises a dressing bag base layer, wherein the dressing bag base layer is formed integrally, and is provided with a middle pressing area and six fixing straps; four edges on the front, the rear, the left and the right of the middle pressing area of the base layer are recessed curved edges; a water absorbing pad layer is fixed on the front surface of the pressing area of the base layer; a hollow sandwich layer is reserved between the water absorbing pad layer and the base layer; an opening is formed in the base layer with the pressing area, so that a local pressing bag for filling pressing dressings is formed by the water absorbing pad layer and the middle pressing area of the base layer; the six fixing straps comprise two lower abdomen fixing straps, two groin fixing straps and two hip fixing straps; adhesive layers are respectively coated on front surfaces of the six fixing straps; and the dressing bag is fixed on the lower abdomen, the groin and the hip of a patient by using the adhesive layers. The dressing bag is simple in structure; pressure dressing, replacement and accurate positioning of wound of a perineum are facilitated; the wound is bound stably; and the workload of medical staff and the pain of patients are reduced.

The invention relates to the field of refractory bricks, in particular to an intelligent production line for producing refractory bricks. The intelligent production line comprises a workbench, a feeding device, a conveying device, a pressurizing device and a pushing device are installed on the workbench and used for completing quantitative transportation, compression molding and automatic movementof raw materials, a demolding device is installed below the workbench and used for separating pressed refractory brick blanks from molds, a conveying belt is arranged on one side of the workbench andused for moving the brick blanks and installing a drying device, and the drying device is used for reducing moisture in the brick blanks. In this way, the technical problems that a lot of manpower isconsumed to produce the refractory bricks, the porosity of the interiors of the brick blanks is relatively high through one-way extrusion, and too much time is taken to air the moisture in the brickblanks are solved.

A minute pressure grill includes an upper grill unit and a lower grill unit. It further includes a U-shaped lift pole, which is rotately connected to the two sides of the upper grill unit. The two ends of the U-shaped lift pole are separately disposed with a first cavity. The first cavity is disposed with a pressure spring and a J-shaped lock catch to drive the pressure spring to compress or release. A pair of arc lead rails are disposed separately on the two sides of the lower grill unit. With the rotation of the J-shaped lock catch inside the U-shaped front pole and the J-shaped lock catch is compressed tightly to the arc lead rails, the food is pressed by the upper grill unit. The food is pressed with the cooperation of the pressure spring and the lock catch.

The invention discloses a double-sided and stacked planing pressure device which comprises a knife shaft seat, an upper knife shaft arranged on the knife shaft seat, a front pry bar and a back pry bar which are respectively arranged at the front side and the back side of the upper knife shaft; the knife shaft seat can be supported on a fixing knife bed in a sliding manner; the front pry bar is stacked by at least one front pry bar unit, and the back pry bar is stacked by at least one back pry bar unit. The knife shaft seat can be supported on the fixing knife bed in a sliding manner by a knife shaft sliding mechanism; one end of the knife shaft seat is provided with a wedge-shaped locating mechanism, and the other end of the knife shaft seat is provided with a knife bed locking mechanism. The stacked planing pressure device has the advantages of stable impacting and restraining effect and good wood attaching performance, can avoid the occurrence of warping and irregular concave-convex ripple in the processed wood, and can be widely applied in various wood planing machines.

The invention provides an inhaul cable pressurizing cylinder sleeve for patellar fracture. The cylinder sleeve is characterized by comprising a straight cylinder which is provided with an axial central through hole; one end of the straight cylinder is fixedly provided with an expanded cylinder cap, and an outer head is sleeved at the other end of the straight cylinder; the outer head is sleeved outside the straight cylinder in a pluggable sliding way; and the outer end of the outer head is fixedly provided with an expanded cap correspondingly. The invention also provides a cylinder inhaul cable pressurizing fixing device for patellar fracture, and the device comprises two cylinder sleeves which are approximately parallel and alternately pass through two sides of the central vertical line of the fixed patella, and a twist tensioning pressurization inhaul cable which is matched with the cylinder sleeves so as to fix the patella. The straight cylinder and the outer cap move oppositely by twist tensioning of the pressurization inhaul cable, so that pressurization tensioning acts on the patellar fracture surface, two fracture ends are prevented from separating and lateral displacing, the deformity of the patella is avoided, and the stability of fracture is maintained. The inhaul cable pressurizing cylinder sleeve has the advantages of simple and practical structure, convenience in operation and good operation stability, and is advantageous to fracture healing.

The present invention discloses a carbon fiber gas cylinder hydraulic pressure test device and a hydraulic pressure test method, the carbon fiber gas cylinder hydraulic pressure test device comprises a hydraulic pressure test unit for testing deformation and pressure bearing capacity of a plurality of to-be-tested gas cylinders, and a hydraulic pressure auxiliary test unit located in front side of the hydraulic pressure test unit; the hydraulic pressure test unit comprises a test rack, a test console, a pressurization unit, a test case and a test vehicle; the hydraulic pressure auxiliary test unit comprises a gas cylinder fixture, a conveying vehicle and a gas cylinder water-pouring and drying treatment unit for performing water pouring and drying treatment on the to-be-tested gas cylinders, and a horizontal placement platform for horizontal placement of the gas cylinder fixture is arranged on the upper part of the conveying vehicle; and the method comprises the following steps: 1, hydraulic pressure test; and 2, water pouring and drying treatment. The carbon fiber gas cylinder hydraulic pressure test device is reasonable in design, easy to operate and good in use effect, a simultaneous testing process of the deformation and pressure bearing capacity of the plurality of gas cylinders can be completed easily, and the water pouring and drying treatment of the plurality of gas cylinders after testing can be performed easily.

The invention discloses an auxiliary nozzle for an air-jet loom. The auxiliary nozzle comprises a spraying pipe and a spraying base. An upper cavity is formed inside the spraying pipe, a lower cavityis formed inside the spraying base, a spraying hole is formed in the upper end of one side of the spraying pipe, the lower end of the spraying pipe is inserted into the lower cavity of the spraying base from the top end of the spraying base, an air inlet is formed in the bottom of the spraying base, and the spraying hole, the upper cavity, the lower cavity and the air inlet are communicated. The spraying pipe comprises an upper section, a transition section and a lower section, the lower section is cylindrical, the transition section is gradually decreased from bottom to top, the cross sectionof the top of the transition section is in an oval shape, the top of the upper section is further shrunk, a slope is formed on at least one side of the top, the spraying hole is formed in the slope,and the spraying angle ranges from 7 degrees to 9 degrees. After one-time accumulation and three-time pressurization, the energy consumption of the auxiliary nozzle is smaller than that of a common air-jet loom, and the weft flight speed can be increased.