61results about How to "Achieve decompression" patented technology

The invention provides a simple dynamic sulfur dioxide gas toxicant exposure experimental device. The device consists of a gas decompression dosing device, a dynamic gas toxicant exposure cabinet / chamber and a waste gas absorption and discharge device, wherein the gas decompression dosing device has functions of directly decompressing and quantifying high-purity sulfur dioxide gas, thus omitting assembly of a special decompression gauge and a flow gauge and realizing quantitative control on toxic gas in advance; the dynamic gas exposure cabinet / chamber ensures that a simulated toxicant exposure environment is closer to a natural exposure environment and concentration of the toxic gas is uniform and accurate and can be regulated and controlled in real time; and the discharged gas meets thesafe discharge standard through the waste gas absorption and discharge device. The overall device has the advantages that operation method is simple, the manufacturing expense is low, and the continuous long-time toxicant exposure can be realized, thus solving the difficulty of continuous dynamic toxic gas exposure for a large number of animals, and realizing sulfur dioxide fumigation for variousfood and industrial materials and the like.

The invention provides a compensation data processing method for an OLED display panel. By conducting wavelet transform on compensation data, discarding a detail matrix obtained through wavelet transform, only storing an approximate matrix obtained through wavelet transform, then estimating the detail matrix by means of the stored approximate matrix, reconstructing wavelet transform and conducting inverse wavelet transform to obtain compensation data again, compression and decompression of the compensation data can be achieved. System storage space occupied by the compressed compensation data is reduced greatly, so that time for data transmission and burning on a production line is shortened. Furthermore, the compressed data have a fixed compression ratio, the error between the compensation data obtained after decompression and the original compensation data is extremely small, and the display quality of the OLED display panel is not affected.

The invention discloses a mass-flow balanced type pressure regulating valve which comprises a valve body (01), a valve cover (02), a valve plug (03), an input channel (106), an output channel (107) and a pressure reducing structure. The pressure reducing structure is a single-stage pressure reducing structure, a piston (10) is arranged in the single-stage pressure reducing structure, one end of the piston (10) is contacted with the valve plug (3) through a compression bar (05), and the other end of the piston (10) is contacted with a regulating spring (19). According to the technical scheme, the single-stage pressure reducing is achieved, a piston type structure is adopted by a pressure reducing cavity, the piston assembly of the mass-flow balanced type pressure regulating valve is different from a traditional diaphragm type structure, and therefore the risk of damaging of a diaphragm caused by mass flow and large pressure fluctuation is reduced.

The invention discloses an XML compression method and device. The method comprises: defining a byte in a data dictionary corresponding to each element of an XML document; defining a byte in the data dictionary corresponding to each attribute of the XML document; using the defined bytes in the data dictionary to substitute for the corresponding elements and the attributes in the XML document one by one by a sender to achieve the compression of the XML document; transmitting the compressed XML document to a receiver; and using the elements and the attributes corresponding to the bytes defined in the data dictionary to substitute for the bytes defined in the received XML document by the receiver so as to decompress the XML document. The method can solve the problem that the XML document has large data quantity during data transmission.

A principal component analysis algorithm based compression method for data on a road traffic time series. The method comprises: firstly, based on historical data on a road traffic time series and in combination with a principal component analysis method, acquiring a projection matrix of road traffic historical data; next, based on real-time data on the road traffic time series, obtaining a road traffic data matrix; then, based on the projection matrix, acquiring a principal component of the road traffic data matrix, so as to implement compression of the real-time data on the road traffic time series; and finally, based on the principal component and the projection matrix of the road traffic data matrix, obtaining a reconstructed data matrix, so as to implement reconstruction of the real-time data on the road traffic time series. Experimental results show that the method has excellent performance on the aspect of compression of data on the road traffic time series.

Side channel blowers having devices for minimizing noise emissions are known that do not, however, sufficiently reduce noise when the control valve is closed. The invention therefore proposes a side channel blower, in which further recesses (72, 64) are formed in the interruption region (32, 34) before the inlet (8) and after the outlet (22), the smallest distance therebetween being 0.5 to 3 times the distance between two conveying blades (26). Such an embodiment achieves further noise reduction, even when the control valve is closed, without reducing the maximum flow rate.

The invention discloses a cervical vertebrae inter-vertebral disc prosthesis fixed between vertebral bodies. The prosthesis comprises an upper end plate (1), a lower end plate (3), and a sliding kernel (2) arranged between the upper end plate (1) and the lower end plate (3). The sliding kernel (2) is fixedly connected with the lower end plate (3) and provided with an upper protruding contact surface (21). The upper end plate (1) is provided with a lower sinking contact surface (11). The sliding kernel (2) can rotate in the lower contact surface (11) of the upper end plate (1) so that the cervical vertebrae inter-vertebral disc prosthesis can move freely between the vertebral bodies. According to the cervical vertebrae inter-vertebral disc prosthesis, after the artificial cervical vertebrae inter-vertebral disc is transplanted into the human body after an operation, a user can bend, stretch and laterally bend the cervical vertebra freely like a normal person, pressure on lesion sections can be reduced thoroughly, the vertebral column sequence is reconstructed, the biomechanics environment of a replacement stage is retained, and meanwhile regression of adjacent joints can be effectively prevented; the prosthesis has good biocompatibility with the human body.

The invention discloses an eddy current heating-based black body surface type temperature source and a use method. The temperature source comprises a thermal insulating ceramic sleeve, and a tungstencopper alloy block is arranged in the inner cavity of the thermal insulating ceramic sleeve; a black body radiation source is arranged on the upper surface of the tungsten copper alloy block; an air gap is formed between the overall structure formed by the tungsten copper alloy block and the black body radiation source, and the inner wall of the thermal insulating ceramic sleeve; the periphery ofthe thermal insulating ceramic is sleeved with an inductive coil; the hot end of a thermoelectric couple temperature sensor is embedded in the black body radiation source; a ceramic pipe passes through the bottom of the thermal insulating ceramic sleeve, and the upper end is connected with the air gap formed between the tungsten copper alloy block and the thermal insulating ceramic sleeve; a temperature source control system comprises a cooling air supplying system and a heating control system in mutual connection; the lower end of the ceramic pipe is connected with the cooling air supplying system; and the inductive coil and the thermoelectric couple temperature sensor are both connected with the heating control system. By virtue of the eddy current heating-based black body surface type temperature source and the use method, low temperature, middle temperature and high temperature levels can be realized, the effective radiation area is relatively large, and high temperature stabilityand high temperature uniformity are achieved.

The invention discloses an assembled minimally invasive intervertebral fusion device for the lumbar spine, which comprises a part A provided with a dorsal front and rear card slot and a middle guide column, and a front and back card inserted in the back side of the A part and provided with a ventral front and back card and a middle guide groove The part B of the fusion device; the part A of the fusion device is composed of a front-end guide part and a rear side body; the back side of the front-end guide part of the part A has a card slot opening to both sides, and the back side of the part A is in the middle of the back side A semi-cylindrical guide column is arranged, and upwardly opening draw-in grooves are arranged on both sides of the rear part of the back side. There are cards on both sides of the ventral side of the front end guide part of the fusion device B, and there is a semi-cylindrical guide groove in the middle of the ventral side of the rear side of the B part, and there are elastic cards on both sides of the ventral rear part. The present invention adopts the split assembly design of two parts of fusion device A and B. During use, the supporting handles can be connected in series to hold the two parts of fusion device A and B, and the working catheter hammer through the intervertebral foramen mirror and the intervertebral disc mirror Into the intervertebral space, when part A enters the intervertebral space and the rear end exits the working sleeve, turn the handle 180 degrees, so that the two parts A and B are hammered into the intervertebral space relative to each other up and down, so as to realize intervertebral disc or intervertebral foramenoscopy. Interfusion.

The invention provides a multifunctional moxa warming pot, and relates to medical instruments for traditional Chinese medicine. The multifunctional moxa warming pot comprises a shell, a micro-motor, an eccentric cam, a getter pump, heating wires, a 12V power interface, a speed regulator switch and a temperature control switch. The whole shell is in the shape of a circular truncated cone, the middle of the bottom end of the shell sinks inwards to form a cupping cavity, the periphery of the cupping cavity is provided with an annular heating cavity, a vibration cavity is further formed in the upper side of the cupping cavity, the top wall of the shell extends downwards and is provided with an air inlet communicated with the cupping cavity, the getter pump is connected with the air inlet through an air pipe, the heating wires are evenly arranged on the wall of the bottom end of the inner side of the heating cavity, the micro-motor is arranged in the vibration cavity, and the eccentric cam is installed on an output shaft of the lower side of the micro-motor. The 12V power interface, the speed regulator switch and the temperature control switch are arranged at the positions, located on the upper side of the vibration cavity, of the top wall of the shell. The speed regulator switch and the temperature control switch are connected with the 12V power interface respectively, the temperature control switch is connected with the heating wires, and the speed regulator switch is connected with the micro-motor.

The invention discloses a rotary valve type pump protecting device. The problems that an existing pump protecting device is complex to operate and high in equipment investment, and safety needs to be further improved are solved. According to the technical scheme, the rotary valve type pump protecting device comprises a sealing valve body with a first flow channel, and a check valve is arranged in the first flow channel; the device further comprises a bypass valve body with a second flow channel, and the part, blow the check valve, of the first flow channel communicates with the second flow channel through a flow hole in a ball valve; the ball valve is fixedly connected with one end of a guide rod, and the other end of the guide rod is hinged to the check valve. The rotary valve type pump protecting device is simple in structure, free of manual operation, controllable in pressure, low in cost, efficient and safe.

The invention discloses a remote hydraulic dynamic pressure release device and method for a fracturing high-pressure manifold. The remote hydraulic dynamic pressure release device comprises a fracturing high-pressure manifold body, a hydraulic power part and a remote control part; the fracturing high-pressure manifold body comprises a first manifold, a second manifold, a third liquid-controlled plug valve and a fourth liquid-controlled plug valve; the first manifold comprises a first three-way pipe, a first liquid-controlled plug valve, a first single-flow valve and a second three-way pipe which are connected in sequence; the second manifold comprises a third three-way pipe, a second liquid-controlled plug valve, a second single-flow valve and a fourth three-way pipe which are connected insequence; the remote control part is used for sending a control signal to the hydraulic power part, and controlling thefirst liquid-controlled plug valve, the second liquid-controlled plug valve, thethird liquid-controlled plug valve and the fourth liquid-controlled plug valve after the hydraulic power part acts. According to the remote hydraulic dynamic pressure release device and method for the fracturing high-pressure manifold, opening and closing of the liquid-controlled plug valves are remotely controlled to release the internal pressure of the high-pressure manifold, and the difficultproblem that personnel enter the high pressure operation area to open and close the plug valves manually is solved.

The invention discloses a temperature and pressure reducing valve which comprises a valve body, a main valve flap, a mixing pipeline, an auxiliary valve flap, an auxiliary valve flap seat and a jetting part. A steam passage is arranged in the valve body. The main valve flap and the mixing pipeline are connected to the valve body. The auxiliary valve flap and the auxiliary valve flap seat are connected to the main valve flap. The jetting part is connected with the mixing pipeline. The main valve flap is provided with air holes. The number of the air holes located in the steam passage can be changed during moving of the main valve flap. The area of the steam passage between the auxiliary valve flap and the auxiliary valve flap seat can be changed during moving of the auxiliary valve flap. The mixing pipeline is used for mixing steam and temperature reducing water. The jetting part is used for jetting the steam and the temperature reducing water. The temperature and pressure reducing valve has the advantages that the energy consumption of valve opening can be reduced, and the cost of valve opening can be reduced.

Embodiments of the present invention provide an image information processing method, a device, and a storage medium. The method comprises: determining key images and other ordinary images in a to-be-compressed YUVA image. The YUVA image comprises a luminance Y component, a first color difference U component, and a second color difference V component, a transparency A component, a first blank component, and a second blank component. The data amount of the Y component is equal to that of the A component. The sum of the data amounts of the U component and the first blank component is equal to half of the data amount of the A component. The sum of the data amounts of the V component and the second blank component is equal to half of the data amount of the A component. According to the key images and the ordinary images, the YUVA image is subject to video compression and a compressed file of the YUVA image is obtained.

A spinal posterior approach dynamic stabilizing device provided by the invention relates to an orthopedic implant device used for curing spinal adjacent segment diseases, particularly for curing the degenerative hypertrophy of spinal facet joints, first-degree degenerative spondylolisthesis, spinal stenosis and other diseases. The dynamic stabilizing device contains an elastic prosthesis and two fixing blocks, wherein the two fixing blocks are separately arranged on the upper surface and lower surface of the elastic prosthesis; each fixing block contains a pressing block and two fixing rods; the two fixing rods are arranged on the pressing block; each fixing rod contains a head and a tail; the pressing block is provided with holes connected with the elastic prosthesis and an end surface matched with the upper surface or lower surface of the elastic prosthesis; the elastic prosthesis has an upper surface and a lower surface which are separately matched with the two fixing blocks; the upper and lower surfaces of the elastic prosthesis are separately provided with a positioning rod which is matched with the pressing block on the fixing blocks; and the two fixing blocks are sleeved on the positioning rods on the upper and lower surfaces of the elastic prosthesis through elastic prosthesis connecting holes on the pressing block to be connected together.

The invention discloses a gas cylinder type pressure-stabilizing dual-mode oxygen supply device. The gas cylinder type pressure-stabilizing dual-mode oxygen supply device comprises a gas cylinder, a nasal oxygen tube and an integrated valve mounted on the gas cylinder, wherein a nasal suction joint on the nasal oxygen tube is inserted into a nasal cavity of a user; a gas outlet outer joint and a gas suction outer joint of the integrated valve are connected with a gas inlet of the nasal oxygen tube; the integrated valve comprises a valve body, a valve cover, a filling module, a flow regulatingmodule and a pulse oxygen supply module, wherein the filling module, the flow regulating module and the pulse oxygen supply module are mounted on the valve body and the valve cover; oxygen in the gascylinder passes through the filling module and the flow regulating module and then is output by the pulse oxygen supply module; the pulse oxygen supply module comprises a gas inlet unit, a gas outletunit and a gas suction unit; and the gas inlet unit comprises a sixth gas channel and a seventh gas channel which are used for feeding gas through the same gas inlet source. According to the gas cylinder type pressure-stabilizing dual-mode oxygen supply device, all mechanical parts are adopted to realize continuous and pulse dual-mode oxygen supply, and a pressure stabilizing module and the filling module are integrated inside, so that the device structure and gas guide tube connection are simplified, and therefore, use of the user is convenient.

The invention discloses a double-stage gas energy-saving valve. The double-stage gas energy-saving valve comprises a pressure reducing valve main body (1), wherein the pressure reducing valve main body (1) is provided with a main air inlet (101) and a main air outlet (102); one end of the pressure reducing valve main body (1) is provided with a first enclosed cavity (2) for reducing the pressure of gas; the air inlet (203) of the first enclosed cavity is communicated with the main air inlet (101); the first enclosed cavity (2) is communicated with a second enclosed cavity (3); the other end of the pressure reducing valve main body (1) is provided with the second enclosed cavity (3) for reducing the pressure of gas; the air outlet (304) of the second enclosed cavity is communicated with the main air outlet (102). The double-stage gas energy-saving valve has the advantages that secondary pressure reduction of gas is finished in the same pressure reducing valve, so that the impact force and flow speed of output low-pressure gas are small and low.

The invention relates to the field of aquaculture, in particular to an automatic feeding robot for aquaculture. The automatic feeding robot for aquaculture comprises a feeding body and a dragging device. The feeding body is connected with the dragging device, and a floating device is installed on the feeding body. The feeding body comprises a storage bin, a conveying motor, a conveying column, a feeding pipe, a spiral auger and a tail conveying device. The dragging device comprises a dragging main frame, a second air bag, a pushing motor and a paddle. It is not needed to manually lay a conveying pipe in a fish pond or manually recycle the conveying pipe, high maneuverability is achieved, time and labor are saved, the feeding range is wide, and the situation that fish stocks gather together to fight for food, so that fishes are hurt is avoided.

The invention relates to a method and a device for cooling an engine, wherein the engine drives at least one at least two-stage compressor (2) of a refrigerant circuit (1), which compressor comprises at least a first compression stage (3) and a second compression stage (4), wherein a refrigerant is conducted through the refrigerant circuit (1), which refrigerant is raised from a low pressure level to a medium pressure level in the first compression stage (3) and from the medium pressure level to a high pressure level in the second compression stage (4) and, subsequently to the second compression stage (4), is expanded to the medium pressure level with a release of heat.

The invention provides a data transmission customization system and a method for a Flume event collection system. The data transmission customization system comprises an FTP client, an FTP server and an IP address input module, wherein the FTP server is located at a remote server for storing event files of the remote server; the IP address input module is used for inputting IP addresses of the remote server, the FTP client and a spooling directory of a data source; the FTP client is located between the remote server and the data source for downloading the event file from the FTP server according to the IP address of the remote server; the event file is stored; and according to the IP address of the spooling directory of the data source, the event file is uploaded to the data source. The technical structure of the Flume event collection system is combined, event transmission generality design and development are completed, and the event collection and transmission efficiency is improved.

The invention provides a multifunctional pressure reducing valve in front of a meter and belongs to the technical field of valves. The multifunctional pressure reducing valve in front of the meter solves the problem how to improve the use safety under the condition of meeting the cut-off function and the pressure reducing function. The multifunctional pressure reducing valve in front of the metercomprises a valve body and an elastic pressure reducing assembly which is arranged in the valve body and can adjust water outflow pressure. The elastic pressure reducing assembly comprises a pressurereducing core and a pressure reducing spring acting on the pressure reducing core. A rotatable valve rod is arranged in the upper end of the valve body in an inserted manner. The upper end of the valve body is externally provided with a lock nut. A magnetic locking mechanism is arranged between the lock nut and the valve body and enables the lock nut and the valve body to be circumferentially fixed. The valve rod and the valve body are limited axially, and the upper end of the valve rod is circumferentially fixed to the lock nut. The lower end of the valve rod is connected with a pressing sleeve in a threaded manner. The pressing sleeve is circumferentially fixed to the valve body. When the valve rod rotates, the pressing sleeve can push the pressure reducing core to overcome the elastic force of the pressure reducing spring to close the pressure reducing valve. The multifunctional pressure reducing valve in front of the meter well improves the use safety and is wider in application range and more practical.

The invention relates to the field of medical devices, in particular to a wall-shaped tissue puncturing and fixing device which comprises a fixing pipe and an inner sleeve sleeved with the fixing pipe and capable of moving forwards and backwards relative to the fixing pipe. At least two puncture cone outer wall assemblies connected in a rotating mode are arranged on the fixing pipe. Puncture cone inner wall assemblies are correspondingly arranged on the front end face of the inner sleeve. The puncture cone inner wall assembly is slightly longer than the puncture cone outer wall assembly. The front ends of each puncture cone inner wall assembly and the corresponding puncture cone outer wall assembly are connected in a rotating mode to form a puncture cone assembling unit. All the puncture cone assembling units distributed around the fixing pipe are gathered to form a puncturable structure. A locking mechanism is arranged between rear end pipe walls of the fixing pipe and the inner sleeve. A limiting mechanism protruding outwards is arranged outside the pipe wall of the fixing pipe. The axial distance between the limiting mechanism and the front end face of the fixing pipe is equal to or slightly larger than the thickness of wall-shaped tissue. Puncturing and fixing can be achieved at the same time without the aid of other tools, and the application range is wide.

The invention discloses a method for inquiring logistics information in real time. The method comprises the following steps of: loading a config file and reading the URL (Uniform Resource Locator) address of each corresponding module in the config file; performing MD5 encryption on a password according to an account number and the password entered by a user by using a C / S (Client / Server) program, and generating a system to log on a real URL address; calling the real URL address by using the C / S program through a WebBrowser control and making the system skip to a functional page if the log-on is successful; if the log-on is unsuccessful, making the system skip to a failure page, acquiring a failure identifier by using the C / S program and giving a user prompt for re-input of the account number and the password; and after the system is successfully logged on, opening a logistics information inquiry page in the WebBrowser control by default according to the address in the config file. In the method, a client program of C / S is taken as a carrier of B / S (Browser / Server) page contents, thus the problem of inconvenience in operating, caused by the unaccustomedness of a logistics industry user to browser operation, is solved.

The invention discloses a pair of forceps for vertebral body back wall. The pair of forceps comprises a fixed handle, a movable handle, an upper forceps, a lower forceps and a support spring assembly, wherein the back end of the upper forceps is bent upwards and is fixedly connected with the fixed handle into an integral structure; the back end of the lower forceps is connected with the movable handle, and the movable handle is hinged to the fixed handle, is moved to the setting direction of the fixed handle by using the inner lower side of a crossing point of the fixed handle and the upper forceps as a support point, is translated upwards, and is engaged with the upper forceps to cut the bone block; the support spring assembly is arranged between the fixed handle and the movable handle, and is used for resetting the movable handle; the front part of the upper forceps is provided with a cross section suitable for spinal cord, so as to obtain a wedge for relieving pressure in front of the spinal cord. The pair of forceps has the advantages that the structure is reasonable, the design is skillful, the operation is convenient, the mechanics principle and operation habit are met, the disturbance and injury to nerves when the vertebral body back wall is cut via the back path are well avoided, and the pair of forceps is suitable for being popularized and applied.

The invention belongs to the field of medical instruments and particularly relates to a medical esophageal catheter and a preparation method thereof, and a ventilating device. The medical esophageal catheter is made from the following materials, by weight: PVC (polyvinyl chloride) resin, calcium-zinc stabilizer, hydrogenated soybean oil, a plasticizer and a compound antibacterial agent, wherein the plasticizer is composed of acetyl tri-n-butyl citrate and methyl O-acetylricinoleate according to a weight ratio of 1:(0.01-0.06); the medical esophageal catheter has the advantages of safety, environment friendliness, stability, ideal antibacterial effect, zero peculiar odor and good simplicity of processing and forming and is suitable for wide range of popularization and application; the invention also provides the ventilating device capable of blocking esophagus and relieving stomach and intestines, and the ventilating device can effectively prevent backflow and mistaken inhalation, can relief the stomach and intestines during ventilating and has the advantages of simple structure, high embedding speed, good simplicity of operation, and good safety and reliability.

The embodiment of the invention provides a data compression method and a data compression device. The method and the device are used for the articulated naturality web. The method comprises the steps:receiving first articulated naturality web protocol data transmitted by an articulated naturality web client, wherein the first articulated naturality web protocol data comprises first message headerdata and first message entity data; compressing the first message entity data according to the first message header data to obtain second message entity data, and organizing the second message entitydata and the first message header data into second articulated naturality web protocol data; sending the second articulated naturality web protocol data to the decompression server through the articulated naturality web core server. Therefore, the compression and the decompression of the articulated naturality web protocol data in the articulated naturality web are realized. The volume of the data in the transmission process is reduced, and the data transmission efficiency is improved.

The invention discloses a nursing bra capable of improving comfort, and relates to the technical field of nursing bras. According to the nursing bra, two bra cup bodies are sewed on the upper end of alower edge body, shoulder straps are respectively sewed on the upper ends of the two bra cup bodies, the inner side surfaces of the two bra cups and the lower edge body are respectively provided withpressing buckles, the pressing buckles comprise male buckles and female buckles, the middle portion of the inner side surface of the bra cup body is provided with an adhesion region, a hygienic sticker is adhered on the adhesion region, the middle position inside the lower edge body is provided with a gas-permeable arc ring, the outer wall of the gas-permeable arc ring is provided with a plurality of gas-permeable holes, the inner portion of the shoulder strap is provided with an inflation airbag, the inner side surface of the shoulder strap is uniformly provided with a plurality of pressurereducing airbags, the pressure reducing airbags are connected to the inflation airbags through connection gas pipes, the inflation airbag is provided with an inflation valve, and the inflation valve has a gas lock valve. According to the present invention, the nursing bra has the improved comfort and the improved gas permeability, can achieve the pressure reducing, and is convenient to use.

The invention relates to the field of medical devices, in particular to a wall-shaped tissue puncturing and fixing device which comprises a fixing pipe and an inner sleeve sleeved with the fixing pipe and capable of moving forwards and backwards relative to the fixing pipe. At least two puncture cone outer wall assemblies connected in a rotating mode are arranged on the fixing pipe. Puncture cone inner wall assemblies are correspondingly arranged on the front end face of the inner sleeve. The puncture cone inner wall assembly is slightly longer than the puncture cone outer wall assembly. The front ends of each puncture cone inner wall assembly and the corresponding puncture cone outer wall assembly are connected in a rotating mode to form a puncture cone assembling unit. All the puncture cone assembling units distributed around the fixing pipe are gathered to form a puncturable structure. A locking mechanism is arranged between rear end pipe walls of the fixing pipe and the inner sleeve. A limiting mechanism protruding outwards is arranged outside the pipe wall of the fixing pipe. The axial distance between the limiting mechanism and the front end face of the fixing pipe is equal to or slightly larger than the thickness of wall-shaped tissue. Puncturing and fixing can be achieved at the same time without the aid of other tools, and the application range is wide.

The invention discloses an anti-slip and pressure-reducing type rubber pad, and relates to the technical field of rubber products. An upper rubber pad body is arranged on the upper surface of a compressive pad body; the lower rubber pad body is arranged on the lower surface of the compressive pad body, the support pad is arranged on the upper surface of the upper rubber pad body, the anti-slip padis arranged at the bottom of the lower rubber pad body, multiple anti-slip suckers are installed at the bottom of the anti-slip pad, multiple transverse pressure reducing slots are formed in the upper rubber pad body and the lower rubber pad body, and the two symmetrical transverse pressure-reducing slots in the upper rubber pad body and the lower rubber pad body are connected with and communicated with the longitudinal pressure reducing slots. According to the anti-slip and pressure-reducing type rubber pad, compression resistance, slip resistance and pressure reduction are achieved conveniently, comfort can be improved, convenience is brought to use, and operation is easy.

The invention discloses a multifunctional pressure / flow control valve with a good sealing property. The multifunctional pressure / flow control valve is applied to a high-pressure standby steam source of a water supply pump steam turbine and comprises a valve, a hydraulic executing mechanism and a support frame which connects the valve with the hydraulic executing mechanism. The valve comprises a valve body, a valve seat, a sleeve and a valve rod, wherein the valve seat and the sleeve are mounted in the valve body and sequentially connected. A plurality of screening holes are designed on the portion, communicating with an inlet of the valve body and the valve seat, of the sleeve. The sleeve is matched with a valve plug mounted at the end of the valve rod. The valve rod extends out of the valve body and is connected with the hydraulic executing mechanism for providing driving force. The hydraulic executing mechanism comprises an oil cylinder-piston assembly and a hydraulic control module. A hydraulic control one-way valve and a cartridge valve communicate with a security oil pipeline through a pressure relief one-way valve. According to the multifunctional pressure / flow control valve, the functions of opening, closing, rapid closing, adjusting, lock-up and the like of the valve can be achieved, and the multiple functions are integrated to a valve control system, so that the system structure is simplified, the maintenance difficulty is lowered, and meanwhile, the production and maintenance cost is also greatly reduced.