3719results about How to "Easy to disassemble and replace" patented technology

The invention relates to a water body experiment apparatus and a water body experiment method. The apparatus comprises a sediment release unit, a culture unit, a control unit, a water body controlling system, and a water quality monitoring system. The sediment release unit, the culture unit, and the control unit are sequentially arranged adjacently. Each two adjacent units are connected with a baffle, such that an experiment box body with the three units communicating with each other is formed. The water body controlling system is used for regulating physical and chemical indicators of water body in the experiment apparatus. The water quality monitoring system is used for detecting the physical and chemical indicator values of water body, sediment, plankton and / or submerged aquatic plants in the experiment apparatus. According to the invention, sediment sampling, sediment pollutant releasing, and algae and submerged plant growing are effectively combined. With the apparatus, sediment release effect of different water environments can be simulated, and influences of different ecological projects (environmental-protection dredging projects and submerged aquatic plant restoration projects) upon water body eutrophication and water body pollution can be quantitatively studied.

The invention discloses a plate clamper platform for a falling weight impact test, and an impact speed measurement method. The plate clamper platform comprises a clamper structure, a supporting lifting structure and a laser sensor, wherein the clamper structure comprises a plate clamping device, a multi-angle rotation device and a clamper bottom plate, the multi-angle rotation device comprises wall plates, wall plate bolts and a bottom plate bolt, each wall plate is provided with a central hole and two arc-shaped grooves, the two arc-shaped grooves are symmetrically arranged relative to the central hole, clamping plates can rotate along the arc-shaped grooves after the wall plate bolts are completely loosened, the supporting lifting structure comprises a platform and a lifting driving device, the clamper bottom plate can rotate by adopting the bottom plate bolt as the center and can slidably move along a straight strip hole, and the laser sensor is arranged below the weight tray positioned on the periphery of a hammer head. With the plate clamper platform and the impact speed measurement method of the present invention, the composite material plate specimen can be tightly clamped, the multi-angle impact on the specimen can be achieved, and the speed change during the drop hammer falling and impact process can be real-timely measured.

The invention provides a guide wire and catheter push device of a blood vessel interventional operation and aims to push a guide wire and a catheter. The device comprises a complete set of solving schemes of a guide wire push device, a guide wire twisting and rotating device and an airbag bracket catheter push device, wherein the guide wire push device consists of a driving motor, a bevel gear group, rollers and an electronic guide wire clamping mechanism; the guide wire twisting and rotating device consists of a driving motor, a gear rack moving pair, a sliding track and sliding block group and an electronic guide wire clamping mechanism; and the airbag bracket catheter push device consists of a driving motor, a bevel gear group, rollers and a manual catheter clamping mechanism. The guidewire and catheter push device provided by the invention effectively integrates push actions of the guide wire and the catheter and is applicable to a mainstream guide wire and RX rapid exchange balloon catheter in the market, actions of artificial wire delivery can be simulated, the purpose that operation is completed by using interventional equipment in one operation process can be achieved, theworking intensity of an operation subject can be alleviated, and the time that the operation subject suffers from radiation can be shortened.

Coal mine downhole crawler type drilling and punching integrated equipment comprises a crawler type hydraulic drilling machine, a high-pressure-resistant sealing drill stem, a drilling and punching dual-purpose drill bit, a high-pressure rotation connector and a high-pressure water pump station, wherein the body of the high-pressure-resistant sealing drill stem penetrates and is fixed in the power head inner hole of the crawler type hydraulic drilling machine, a power head provides rotation speed and torque to the body of the high-pressure-resistant sealing drill stem, one end of the high-pressure-resistant sealing drill stem is connected with the high-pressure water pump station through the high-pressure rotation connector, the high-pressure water pump station provides high-pressure water needed by punching, the other end of the high-pressure-resistant sealing drill stem is connected with the drilling and punching dual-purpose drill bit, and hydraulic operations can be performed after drilling without replacing the drill bit. The coal mine downhole crawler type drilling and punching integrated equipment has the advantages that streamlined operations of coal mine downhole gas pressure relief, drilling and punching can be completed by the equipment, safe and efficient production of outburst mines is guaranteed, coal seam coal and gas outburst danger is eliminated, a regional pre-drainage gas drilling construction period is shortened, coal seam drilling and punching and gas extraction efficiency are increased, and gas disaster prevention and control cost is reduced.

The invention discloses an automatic rope distributing and discharging device of a winch, which comprises a speed-setting box and a rope discharging mechanism, wherein the rope discharging mechanism comprises a bidirectional screw, a ratchet shaft, a rope driving wheel, a rope pressing wheel and a slide block, the rope driving wheel is arranged on the ratchet shaft, the rope pressing wheel is correspondingly arranged outside the rope driving wheel, two sides of the rope pressing wheel are provided with compacting devices, the slide block is arranged on the bidirectional screw, and a ratchet pin is arranged between the rope driving wheel and the ratchet shaft. The invention has novel design, reasonable structure and high safety property, can not only lead a rope to be automatically sequentially distributed on a winding drum, can lead the rope to be forcedly driven out when placing the rope, and can be applied to various winches used under different conditions and environments.

A co-vibrating type vortex-induced vibration power generation device based on multiple vibrators comprises vibrators, supporting rods, connecting rods, linear guide rails, linear springs, a transmission rod and a linear power generator; the supporting rods are fixed at the bottom of a water flow; the linear guide rails are arranged in the middles of the supporting rods, and perform linear movement in the vertical direction; the connecting rods are used for connecting all vibrators to be a whole vibrator group; the front ends and the rear ends of the connecting rods are fixed to the linear guide rails; a linear spring for enabling the vibrators and the connecting rods to perform linear movement back and forth in whole is arranged at each of the upper end and the lower end of each linear guide rail; the middle parts of the connecting rods are fixedly connected with the transmission rods to enable the transmission rods to move along the connecting rods together; the top of the transmission rod is connected with the linear power generator. The co-vibrating type vortex-induced vibration power generation device has the advantages that a wake flow galloping effect is utilized, the generating efficiency of the vibrator group is improved, and a large number of small-capacity power generators are replaced with a small number of high-capacity power generators, so that the cost is reduced; the device has a simple structure, is easy to implement, and can be widely used in the vortex-induced vibration power generation engineering using ocean currents and tail water of a hydroelectric station.

The invention discloses a sand casting die assembly comprising a shell which is of a hollow structure. One side wall of the shell is further provided with a feed port of which the opening position isrotatably connected to a cover plate, and the inner wall of the upper side of the shell is fixedly connected to a cylinder; the output end of the cylinder is connected to a piston rod, and the end, far away from the cylinder, of the piston rod is connected to a mounting plate of which the lower end is further provided with a die; the upper end of the die is provided with a mounting block, and thelower side wall of the mounting plate is provided with a mounting groove matched with the mounting block; the mounting plate is internally provide with two cavities arranged symmetrically, and the cavities are internally provided with first slide bars arranged vertically; the opposite side walls of the two first slide bars are both provided with first clamping blocks which penetrate the cavities;and the side wall of the mounting block is provided with a first slot matched with the first clamping blocks. According to the sand casting die assembly disclosed by the invention, a clamping sand mould is simple and firm, and the die for compression molding is easy to remove and displace; and the die assembly is wide in application scope.

The invention discloses a high-temperature superconducting low-temperature helium self-circulation cooling system. Vertical temperature and density differences of low-temperature helium in the system allow natural convective circulation to form, and the problems that the superconducting magnet used in the direct cooling manner of a small refrigerator is poor in cooling effect and the necessary application of expensive low-temperature helium pumps in forced convective circulation cooling causes high cost are solved. After the system stabilizes, operating pressure is low; the safety problem is solved. A superconducting magnet and a current lead form a whole which can be lifted in or out of magnet mounting space and which is convenient to demount, mount and change; cooling medium helium has controllable temperature, and conditions for the study on performances of high-temperature superconducting magnets at specific temperature are provided.

The invention provides an electrolytic cell with a controllable temperature used for electrochemical measurement. The electrolytic cell comprises an upper cover (1), a sleeve top board (2), a electrolytic cell container (3), a circulating water sleeve pipe (4), a water inlet (5), a sleeve bottom board (2), a fixed support plate (7), a working electrode (8), a gasket (9), a fastening bolt (10), a sealing ring (11), container legs (12), a water outlet (13), a platinum electrode (14), a rubber plug (15), a salt bridge (16), a reference electrode (17), etc. Only need to align a sample to a central hole of the sleeve bottom board and screw a nut to make the sample contacted and sealed with the sealing ring, with no need of welding and sealing the sample, the electrolytic cell can directly measure electrochemical properties of the samples, and is convenient for replacing the sample. Temperature of the electrolyte can be controlled by externally connecting circulating water, so that interference electrochemical signals caused by eddy current produced by electric heating can be prevented. The whole container is made of corrosion resistant organic glass members; and the connecting parts are adhered with organic glass adhesives, so that the electrolytic cell is convenient in preparation and has long service life.

The invention discloses a submerging jet flow testing box and a testing method. The testing box includes a box body, jet flow water inlets, a vision window, a pressure gauge interface, a relief port, a clamp holder, a feeding device interface, a liquid stream valve port, a drainage port and the like. During the laboratory experiment process, a submerging fluid field environment is improved, and the approximate engineering practical submerging jet flow is simulated; other testing instrument is combined, the submerging jet flow fluid field structure is observed; the potential core of jet under the submerging condition is observed combined with a three dimensional laser particle imaging velocimeter (3DPIV) system; the variation of different jet nozzle jet flow fluid field structures is analyzed, and the internal structures of the jet nozzles are optimized; the accelerating mechanism and distribution condition of grinding material particles during the submerging grinding material jet flow testing are analyzed; and meanwhile, the observation experiment for cutting and flushing material under the submerging condition can be performed. The submerging jet flow testing box and the testing method have the advantages that the structure is simple, the operation is convenient, nozzles can be replaced easily, a plurality of testing functions are provided, and compared with other jet flow testing devices, the submerging jet flow testing box not only can test the jet flow fluid field structure under the submerging condition, but also can be reutilized repeatedly, thereby saving the experimental expense at the same time.

The invention discloses an automatic robot hearth opening and blocking device which comprises a guide rail (1), a moving base (2), a specialized robot (3), a cable delivery mechanism (4), a combined tool rack (5) and a heat screen (10), wherein the guide rail (1) is arranged on the ground in the axial direction of a hearth (A); the heat screen (10) is arranged between the hearth (A) and the guide rail (1); the moving base (2) can move along the guide rail (1) forward and backward; the specialized robot (3) is arranged on the moving base (2); the cable delivery mechanism (4) is arranged on a side surface at the front end of the guide rail (1) and positioned behind the heat screen (10); the combined tool rack (5) is arranged on a side surface at the rear end of the guide rail (1). The automatic robot hearth opening and blocking device can realize automation of calcium carbide discharging operation such as hearth opening and clearing, drill rod discharging, and hearth blocking, and is convenient to dismantle, and replace highly consumable tools for opening the hearth.

The invention provides a multi-level damping grading yield metal damper comprising at least two annular damper bodies coaxially arranged in an inside and outside sleeving mode. An interval is arranged between the two adjacent annular damper bodies connected through a connecting base plate; the two annular damper bodies are used for being connected with a building structure; and when bent and deformed, the annular damper body relatively located in an inner ring preferentially yields than the annular damper body relatively located in an outer ring. The multi-level damping grading yield metal damper can produce the good damping energy dissipation effect in small earthquakes, middle earthquakes and large earthquakes simultaneously.

The invention provides a lightweight mechanical arm modular joint. The lightweight mechanical arm modular joint is characterized by comprising a hollow motor, a speed reducer, high speed motor bearings, modular joint output shafts, a first encoder and a second encoder; the hollow motor is provided with hollow motor rotors, hollow motor stators and hollow motor shafts; the modular joint output shafts are connected with the speed reducer and output power outwardly; the first encoder is installed outside the modular joint output shafts and is used for detecting the positions of the modular joint output shafts; the second encoder is connected with the hollow motor shafts and is used for detecting the positions of the hollow motor rotors; the hollow motor rotors are fixed to the hollow motor shafts, and the two ends of the hollow motor rotors are connected with the speed reducer and the high speed motor bearings respectively. The lightweight mechanical arm modular joint is simple and reliable in structure and conducive to mass production.

The invention discloses network communication equipment for multimedia teaching. The network communication equipment for multimedia teaching comprises a base, a groove is formed in the middle of the bottom of the base, and a positioning device is arranged at an inner cavity of the groove. A drive shaft is connected to the right sides of stand columns in a penetrating mode. Fixed columns are fixedly connected to the tops of the opposite sides of telescopic columns. A transverse plate is fixedly connected to the bottoms of the fixed columns. A sliding groove is formed in the middle of the top ofthe transverse plate. Transverse strips are movably clamped to the two sides of an inner cavity of the sliding groove. Side plates are fixedly connected to the opposite sides of the transverse strips. The transverse strips are sleeved with springs. Through cooperative use of the base, the groove, idler wheels, a bottom plate, a limiting plate, an adjusting rod and an adjusting plate, the problemthat a traditional projector is not convenient to move to another classroom for teaching is solved, and through cooperative use of the stand columns, the telescopic columns, a motor, the drive shaft,clamping strips and gears, the problem that the height of a multimedia teaching device cannot be conveniently adjusted is solved.

A power-operated toilet paper dispensing device for automatically providing a desired quantity of existing toilet paper as needed by a user may include a housing adapted to be affixed to a support surface. Further, the device may include a plurality of spindles situated within the housing. Each of the spindles may receive and support a corresponding roll of toilet paper. A mechanism may be included for automatically and independently rotating each of the spindles along a corresponding first rotational path defined within the housing. Such a mechanism may be automatically responsive to a triggering event such that a first one of the spindles automatically and independently articulate along the corresponding first rotational path while a second one of the spindles remains statically disposed at a fixed position within the housing. Additionally, the automatically and independently rotating mechanism may automatically detect the triggering event at a location exterior of the housing.

The invention discloses a fixing punching mechanism for a plastic cylinder. The fixing punching mechanism comprises a rack. Upper supporting plates are fixed to the top surfaces of the left side and the right side of a top plate of the rack. At least two clamping air cylinders are fixed to the outer side walls of the upper supporting plates. Pushing rods of the two clamping air cylinders penetrate through the upper supporting plates. Connecting plates are fixed to the ends of the pushing rods of the clamping air cylinders. Arc-shaped clamping blocks are fixed to the opposite surfaces of the two connecting plates. Vertical supporting plates are fixed to the middles of the top surfaces of the two upper supporting plates. The two ends of a stamping air cylinder connecting frame are fixed to the upper inner side walls of the two vertical supporting plates. A stamping air cylinder is fixed to the top surface of the middle of a top plate of the stamping air cylinder connecting frame. A pushing rod of the stamping air cylinder vertically and downwards penetrates through the top plate of the stamping air cylinder connecting frame. A guiding connecting plate is fixed to the pushing rod of the stamping air cylinder. According to the fixing punching mechanism for the plastic cylinder, automatic clamping is conducted by adopting the clamping air cylinders, a cylinder block is inserted in the cylinder in a sleeved mode, and punching is automatically conducted; the fixing punching mechanism is high in efficiency and good in effect; and the effect that the cylinder is deformed due to punching is avoided is ensured through the cylinder block.

The invention provides a hose cleaning robot and relates to the field of pipeline inner wall crawling robots. In order to meet the requirements for crawling and cleaning of the inner wall of a hose, the robot for crawling on and cleaning the inner wall of the hose is designed. The robot comprises an upper fixing mechanism, a lower fixing mechanism and a middle heading mechanism. The two fixing mechanisms are located at the two ends of the middle heading mechanism respectively to achieve the fixing effect. The middle heading mechanism is in charge of connecting a whole machine, pushes the upper fixing mechanism to move forwards and pulls the lower fixing mechanism to ascend. Both the upper fixing mechanism and the lower fixing mechanism are designed as slider crank mechanisms to achieve the expanding, fixing, shrinking and separating functions. Curved face supporting boards driven by the upper fixing mechanism form a bud shape when folded, so that a road is opened; and when unfolded, the curved face supporting boards make tight contact with the inner wall of the hose to achieve the fixing effect. The two ends of a supporting board of the lower fixing mechanism are provided with telescopic rods, so that linear motion of the supporting board is guaranteed, and the supporting board is supported stably when fixed. A lead screw slider module is adopted for designing the middle heading mechanism, so that the heading function is achieved.

The invention relates to a method for designing a shading transition facility for a road tunnel entrance. The facility mainly comprises transparent toughened glass plates (2), a plurality of arched steel-structure upright columns (3), cicada-wing-shaped nontransparent shading films (5) and a shading transition retroreflection system, wherein the arched steel-structure upright columns (3) are gradually heightened outwardly from tunnel cave entrance end walls (1), and horn-shaped openings are formed by the arched steel-structure upright columns (3) and the transparent toughened glass plates (2) on the upright columns; the cicada-wing-shaped nontransparent shading films are arranged on inner layers of the transparent toughened glass plates, and contour line planes and side face projections of the shading films are Boltzmann curves, and the two sides of each arched steel structure are triangularly hollowed; the retroreflection system comprises medium-frequency steel-structure upright column contour marks (7), medium-frequency guardrail contour marks (8), high-frequency guardrail facade marks (9), high-frequency pavement marking lines (10) and high-frequency pavement protrusion marks (11). The shading transition facility has the advantages that the intense transition of space, luminance and reference of the tunnel entrance can be improved, and the black-hole effect on the tunnel entrance is relieved.

The invention discloses a high-temperature superconducting magnet liquid nitrogen zero-evaporation cooling system. Liquid nitrogen is selected to be used as cooling media, a thermosyphon principle is utilized, and in addition, a superconducting magnet is cooled in a way of forming a refrigerating machine installing dewar, a magnet cooling dewar, a liquid nitrogen communication pipeline and an evaporation nitrogen gas communication pipeline into a sealed circulation system. The high-temperature superconducting magnet liquid nitrogen zero-evaporation cooling system solves the problems that in the liquid nitrogen direct soaking cooling mode, liquid nitrogen needs to be regularly supplemented, in the large-cooling-capacity direct cooling mode, the superconducting magnet cooling effect is poor, in the forced convection circulation cooling, a high-price low-temperature nitrogen pump needs to be adopted, and the cost is high. The temperature of cooling media of liquid nitrogen is controllable, conditions are provided for studying the performance of high-temperature superconducting magnets at the specific temperature. The system has the advantages that the refrigerating machine and the superconducting magnet are placed in a separated way, the damage to the refrigerating machine caused by superconducting magnet superconducting loss is avoided, and the safety is improved. The superconducting magnet and a current lead wire form a whole body which can be directly hung out from or hung into the magnet cooling dewar, and the dismounting, the mounting and the replacement are convenient.

The invention relates to a cigarette mainstream smoke on-line analysis device and a cigarette mainstream smoke on-line analysis method. The device comprises a smoking machine and an atmospheric pressure chemical ionization tandem mass spectrometer. The on-line analysis method comprises the steps that: when the cigarette is smoked, mainstream smoke is collected into a mainstream smoke collection bottle; the smoke sample is directly introduced into the atmospheric pressure chemical ionization tandem mass spectrometer through a feeding valve, and is subjected to fast analysis. Compared with a traditional cigarette mainstream smoke analysis method, the smoking machine and the sample collection and introduction device have the advantages of simple structure and convenient operation. The sampling bottle of the smoking machine is connected to an ion source of the mass spectrometer through a capillary, such that sample direct introduction can be realized. Only a few seconds are needed from cigarette smoking to feeding and analysis. The sensitivity is high, and repeatability is good. The method and the device are suitable for on-line analysis of organic compounds in single-suction and suction-by-suction cigarette mainstream smoke.

The invention discloses a high-pressure controllable slide-valve type mechanical combined sealing system. The system comprises a controllable slide valve stationary seal assembly and a rotating mechanical seal assembly; the controllable slide valve stationary seal assemble comprises a slide valve gland (13), a slide valve (11) and a tapered shaft sleeve (12) sheathed on a shaft shoulder, the tapered shaft sleeve (12) is positioned inside the slide valve gland (13), the slide valve (11) which is partially positioned in a flange (16) is hermetically connected with the tapered shaft sleeve (12) in a sliding way, and the flange (16) is provided with a pressure source channel I (161) and a pressure source channel II (162) which are respectively used for controlling the slide valve (11) to slide leftwards or slide rightwards; the rotating mechanical seal assembly comprises a rotating seat (9) which is fixedly connected with a shaft sleeve (10), a rotating ring (17) and a stationary ring (7) which are closely jointed on a seal face and the like. The sealing system can help greatly reduce and avoid leakage of dangerous fluid and serious accidents.

The invention relates to a production process for an electric toothbrush, in particular to a production process for an electric toothbrush casing. The production process comprises the steps that firstly spraying is conducted, specifically, a shading light oil layer is sprayed on the front or the reverse of a transparent decorating part; secondly laser engraving is conducted, specifically, the laser engraving technique is adopted and the a needed shape is hollowed out on the shading light oil layer; thirdly electroplating is conducted, specifically, a metal layer or a metallic oxide layer is vacuum plated on the front of the transparent decorating part; fourthly injection molding is conducted, specifically, a transparent soft rubber layer is injected on the light source region of an electric toothbrush handle; and fifthly assembling is conducted, specifically, the transparent decorating part is assembled on the transparent soft rubber layer and the reverse of the transparent decorating part is attached to the transparent soft rubber layer. According to the production process, processing risk sharing is achieved; the loss cost caused by processing errors is lowered; and the implicit glowing effect is achieved, and the lighting effect is even and gentle.

A partial discharge detection test platform of a medium-voltage switch cabinet comprises a metal cabinet, a fault model, three conducting rods and a signal detecting unit. The conducting rods are symmetrically vertically arranged in the metal cabinet, each conducting rod is formed by an upper conducting rod body and a lower conducting rod body, the upper ends of the upper conducting rod bodies penetrate through the top of the metal cabinet to be connected with wiring columns while the lower ends of the same are connected with the fault model the upper ends of the lower conducting rod bodies are connected with the fault model while the lower ends of the same are connected with the metal cabinet. The signal detecting unit comprises a ultrasonic wave sensor, a ultrahigh frequency sensor, a TEV (transient earth voltage) sensor, Rogowski coils, high-voltage probes, and a power-frequency high-voltage source, wherein the ultrasonic wave sensor and the ultrahigh frequency sensor are arranged near a square hole of the metal cabinet and respectively connected with a first digital oscilloscope and a second digital oscilloscope, the TEV sensor is adhered on the outer surface of the metal cabinet and connected with the second digital oscilloscope, the Rogowski coils are coiled on the lower conducting rod bodies, the high-voltage probes are arranged on high-voltage inlet wires of the insulator wiring columns, the Rogowski coils and the high-voltage probes are all connected with the first digital oscilloscope, and the power-frequency high-voltage source is connected with the wiring columns. The partial discharge detection test platform of the medium-voltage switch cabinet is capable of simulating partial discharging in the real switch cabinet, convenient to move and operate, considerable in insulation distance, and good in safety.

The present invention relates to a roof structure for buildings, especially houses, buildings and / or dwellings. The structure comprises; at least a connecting element (2) in the form of a profiled member fixable to the bearing structure and provided with a plurality of conductor elements (10), consecutively aligned along the connecting element (2); a plurality of roofing elements (4) in the form of tiles, which are connected to the connecting element (2) and which each bear at least a photovoltaic module (6); in connection with the terminals of the photovoltaic module (6) the conductor elements (10) enable a series electrical connection to be established between two adjacent roofing elements (4) consecutively arranged in rows (13, 14) in a main development direction (3).

The invention relates to an assembly type steel bridge and a building method of the steel bridge. The assembly type steel bridge comprises supporting frames, a bridge deck slab, an H-shaped beam, bridge deck slab connecting parts and H-shaped beam locking mechanisms. The H-shaped beam is arranged on the supporting frames. The extension direction of the H-shaped beam is perpendicular to the extension direction of the supporting frames. The supporting frames support the H-shaped beam. The bridge deck slab is laid on the H-shaped beam. The supporting frames and the H-shaped beam are fixedly installed through the H-shaped beam locking mechanisms. The H-shaped beam and the bridge deck slab are fixedly installed through the bridge deck slab connecting parts. According to the steel bridge, the number of components is small, the structure is light and simple, erecting is fast, assembling, disassembling and replacing are convenient, the components can be purchased in batches according to the requirement of the construction progress in the construction and installation process, and installing and erecting are carried out while materials enter the site; in the disassembling process, disassembling is carried out while the materials are moved out of the site in batches, and the problem that due to stacking of the materials, construction of other special projects is influenced can be effectively solved.

The invention relates to a direction changing sensor capable of simultaneously measuring a direction changing angle and a torque. The direction changing sensor comprises an input shaft (4), an output shaft (8), a torsion bar (5), a first signal round disk (1), a second signal round disk (2) and a third signal round disk (3). One end of the torsion bar (5) is connected with the input shaft (4), and the other end is connected with the output shaft (8); the first signal round disk (1) is connected with the input shaft (4); the second signal round disk (2) and the third signal round disk (3) are connected with the output shaft (8); the three signal round disks are gears made of a ferromagnetic material; the outer peripheries of the three signal round disks are provided with magnetic resistance convertor assemblies (7); and each magnetic resistance convertor assembly (7) comprises three magnetic induction sensors which are respectively arranged at the outer peripheries of the three signal round disks. By utilizing the three signal round disks which are gears made of the ferromagnetic material, the direction changing sensor can simultaneously finish the conversion and measurement of the direction changing torque and the direction changing angle, has simple structure and is convenient for operation.

The invention discloses a high-efficiency environment-friendly dust removal device. The device includes a device body, the top of the left side of the device body is communicated with a first passing pipe, the right side of the device body is fixedly connected with a dust storage box, the top of the device body is provided with a blower, the outlet of the blower is communicated with a dust outlet pipe, the end, away from the outlet of the blower, of the dust outlet pipe is communicated with the top of the dust storage box, the inlet of the blower is communicated with a dust inlet pipe, and the end, away from the inlet of the blower, of the dust inlet pipe penetrates through the device body, extends into the device body and is communicated with a communication pipe. According to the high-efficiency environment-friendly dust removal device, through the arrangement of the blower, dust in the device body can be sucked into the dust storage box through the dust inlet pipe and the dust outlet pipe, and the dust can be collected and treated; through the arrangement of the communication pipe and the arrangement of a dust suction pipe, the area of dust absorption is increased, the cleaning efficiency is improved, and at the same time, the problems are solved that the dust cannot be cleaned thoroughly, it is difficult to collect treated dust because the treated dust is directly discharged into air, and then the treated dust causes pollution to the environment and is harmful to human-body health.

The invention relates to a stirring device of an ice cream machine. The stirring device comprises a stirring shaft and a stirring blade fixed on the outer surface of the stirring shaft, wherein the stirring blade comprises two groups of flaky blades arranged along the axial direction of the stirring shaft and a stripe blade arranged at the tail end of the stirring shaft. The stirring device further comprises a scraper assembly arranged between the two groups of flaky blades, wherein the scraper assembly comprises a first mounting seat and a scraper arranged on the first mounting seat, and the scraper is in pinned connection with the first mounting seat; in the limited range of the first mounting seat, the scraper slides in a way of contacting the first mounting seat and rotates by taking the back of the scraper as a shaft. By using the stirring device of the ice cream machine, delivery and scraping of slurry can be completed independently, the position of the scraper can be adjusted according to the clearance between the stirring device and the wall of a stirring cylinder so that the scraper can be clung to the inner wall of the cylinder and scrape all slurry, and therefore, a series of problems caused by the clearance between the stirring device and the inner wall of the cylinder are overcome, and the stirring device has the effects of being good in scraping effect, strong in thrust and convenient for changing the scraper.

The invention discloses a fixed-length cutting device for a stainless steel tube. The fixed-length cutting device for a stainless steel tube comprises a cutting platform and a cutting head group, andfurther comprises a length determining assembly and a clamping assembly; the left side end of the cutting platform is provided with an opening groove, a cutting panel is arranged in the opening groove, and a material collecting box is arranged under the cutting panel; and the length determining assembly comprises a fixed side plate, positioning screws and a positioning pressing plate, the fixed side plate is located over the left end of the opening groove and fixedly connected with the top face of the cutting platform, the positioning screws are symmetrically arranged on the front side and theback side of the fixed side plate, and the two ends of the positioning pressing plates are arranged on the two positioning screws in a sleeving mode separately. According to the fixed-length cuttingdevice for the stainless steel tube, the structure is simple, the practicability is high, operation is easy, use is convenient, not only can the cutting rate and the cutting precision of the stainlesssteel tube be improved, but also the cutting length standard can be guaranteed every time only through one time of cutting length measurement, the manual labor intensity is effectively reduced, the error rate brought by each time of manual measurement is decreased, and resources and the cost are saved.