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56results about How to "Avoid affecting the tightness" patented technology

Continuous feeding device for papermaking waste residue

A continuous feeding device for papermaking waste residue belongs to the technical field of feeding devices for papermaking waste residue and comprises a feeding barrel, a feeding cylinder, a pressing bin and a feeding bin. The feeding cylinder is movably sleeved in the feeding barrel, the pressing bin is disposed above the feeding barrel and communicated with the feeding barrel, the feeding barrel is perpendicularly connected with the pressing bin, an arc-shaped smooth transitional structure is disposed at a joint of the feeding barrel and the pressing bin, a turning plate used for pressing materials is fittingly disposed in the pressing bin, the feeding cylinder is fixedly connected with a piston, the piston is fixedly connected with a piston rod, and a cooling jacket is fittingly arranged on the outside of the feeding barrel. The cooling jacket is added to the outside of the feeding barrel, the temperature of the materials is reduced, and a sealing function is realized. In addition, a rod sleeve, the piston rod, the piston and the feeding cylinder form a pushing device, and feeding continuity and stability of a system are guaranteed. Furthermore, the smooth transitional structure is arranged at the joint, and accordingly the continuous feeding device for papermaking waste residue can continuously, stably and safely feed the papermaking waste residue required by cracking of a high-temperature sealing cracking kettle.
Owner:仁精科技(昆山)有限公司

High-temperature and high-pressure conventional triaxial direct shear fracture seepage coupling testing device and use method

The invention relates to a high-temperature and high-pressure conventional triaxial direct shear fracture seepage coupling testing device. Two shear pressure heads and two pressure assemblies are arranged on the upper portion and the lower portion of a rock sample in a manner of being symmetrical about the center of the rock sample. The shear pressure head includes first and second shear pressure head bodies. The pressure assembly comprises a rubber bag and a base plate. A part of the pressure assembly is arranged in a space formed by the height difference of the first shearing pressure head and the second shearing pressure head. The rubber bag applies pressure to the rock sample through the base plate. Seepage media in a first seepage network groove formed in the second shearing pressure head body and a second seepage network groove formed in the base plate apply seepage pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The testing device has the beneficial effects that the testing device can be used for carrying out a conventional triaxial direct shear fracture seepage test under high-temperature and high-pressure conditions. Through the simple structure, the optimized sealing design, the connection mode of the piston component and the rubber bag and the liquid injection method design, the practicability and reliability of the device are greatly improved.
Owner:NORTHEASTERN UNIV

Vacuumizing device

The invention discloses a vacuumizing device. The vacuumizing device comprises a vacuumizing tank and a vacuumizing pump, wherein the vacuumizing tank comprises a tank body and a cover body, wherein calibration parts are respectively arranged on the tank body and the cover body; when the cover body and the tank body are tightly screwed until the two calibration parts are thoroughly overlapped, the cover body is in sealing fit with the tank body; a feeding pipe, a discharging pipe and a vacuumizing pipe are arranged on the tank body; valves are respectively arranged at parts, on the outer side of the tank body, of the feeding pipe and the discharging pipe; the vacuumizing tank is communicated with the vacuumizing pump through the vacuumizing pipe. When the cover body is rotated until the cover body is tightly screwed and the calibration part of the cover body is thoroughly overlapped with the calibration part of the tank body, the cover body is in thorough sealing fit with the tank body; the gas in the vacuumizing tank is extracted by the vacuumizing pump; then the valve on the discharging pipe is switched off for outputting the material; the cover body can be screwed out for washing the vacuumizing tank after being used; the vacuumizing device is convenient and effective; the vacuumizing tank does not need to be replaced regularly; the cost is reduced; due to the arrangement of the calibration parts, the excessive rotation or insufficient rotation of the cover body can be avoided.
Owner:CHANGXING TIANCHEN MOLD

High-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device and use method thereof

The invention relates to a high-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device. Two first pressure heads and two pressure assemblies are arranged above and below a rock sample in a manner of being symmetrical about the center of the rock sample. The two second pressure heads are arranged on the left and right sides of the rock sample in a central symmetry manner relative to the rock sample. The first pressing head comprises a first pressing head body provided with a groove part. A part of the pressure assembly is accommodated in the groove part. The pressure assembly comprises a rubber capsule and a base plate, and the rubber capsule applies pressure to the rock sample through the base plate. Seepage media in a first seepage network groove formed in the first pressure head main body and a second seepage network groove formed in the base plate apply seepage pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The true triaxial direct shear fracture seepage testing device has the beneficial effects that the true triaxial direct shear fracture seepage testing device is combined with a triaxial testing machine, a true triaxial direct shear fracture seepage test can be carried out on a rock sample under high-temperature and high-pressure conditions, and the practicability and the reliability are relatively high.
Owner:NORTHEASTERN UNIV

Full-automatic aluminum alloy flood control wall body

The invention belongs to the technical field of urban flood control and waterlogging prevention, and relates to a full-automatic aluminum alloy flood control wall body. An upper panel of a wall body panel comprises spliced panel profiles, connecting profiles for connecting the adjacent panel profiles, and a bottom profile; a lower panel comprises a plurality of hollow floating body profiles weldedto the lower surfaces of the panel profiles, plugs blocking the two ends of the floating body profiles, and blocking profiles welded to the ends of the panel profiles; the n-shaped connecting profiles are inserted and connected into first insertion grooves and second insertion grooves in the two sides of the upper end of the adjacent panel profiles; a first L-shaped connecting plate is arranged on one side of the lower end of each panel profile, and a second U-shaped connecting plate cooperatively mounted with the first connecting plate is arranged on the other side of the lower end of each panel profile; and the first connecting plates and the second connecting plates of the adjacent panel profiles are fixed through welding bolts. The full-automatic aluminum alloy flood control wall bodyhas high specific strength, is integrally extruded and molded, and is convenient and reliable to connect, good in sealing performance, easy to maintain and environmentally friendly, and the purposesof improving the product performance and prolonging the service life are achieved.
Owner:辽宁忠旺铝合金精深加工有限公司

Anti-rotary type safety valve

The invention discloses an anti-rotary type safety valve. A valve port is formed in the bottom of a valve body; a steam exhaust port is formed in the side wall of the valve body; a valve rod with a spring is arranged in the valve body; a valve element at the bottom of the valve rod is abutted to the valve port; first chutes are formed in the two sides of the valve element; limiting sliding blocks suitable for the corresponding first chutes are formed in an inner cavity of the valve body; a sliding rod is arranged at the top end of the valve rod; the interior of the sliding rod is of a cavity structure; second chutes are formed in the inner side wall of the sliding rod; the top end of the valve rod is arranged in the cavity of the sliding rod and is also provided with a protrusion part; and the protrusion part is clamped in the second chutes separately. The anti-rotary type safety valve is stable in structure, high in safety and long in service life and can effectively prevent the valve element and the valve rod from rotating.
Owner:天津市华诺盛源科技有限公司

Ultra-low-temperature top entry ball valve and assembly method thereof

InactiveCN105257859ARealize two-way sealingPrevent Liquefaction BoostSpindle sealingsPlug valvesGraphiteEngineering
The invention discloses an ultra-low-temperature top entry ball valve and an assembly method thereof. The ball valve comprises a valve body, a valve cover, a valve rod and an operation mechanism, wherein the valve cover is connected with the valve body in a dismountable manner; a valve ball and a valve holder are arranged in a valve-body middle cavity of the valve body; the lower end of the valve rod penetrates through the valve cover and is connected with the valve ball; a drain board is welded to the valve cover; a steam cavity is arranged in the valve cover; a first pressure relief hole is formed in the valve rod; a second pressure relief hole is formed in the valve ball; the steam cavity, the first pressure relief hole and the second pressure relief hole are communicated with each other; a positioning ring, a positioning pin, an oblique triangular graphite sealing ring, a first lip-shaped sealing ring, a second lip-shaped sealing ring, a pressing ring, a disc spring, a threaded sleeve and an anti-rotation screw are arranged between the inner wall surface of the valve body and the valve holder; the anti-rotation screw penetrates through a positioning member and is connected with a threaded hole of the threaded sleeve; a valve holder sealing ring is fixedly arranged on the valve body and tightly presses the outer surface of the valve ball. Through the technical scheme, the ball valve disclosed by the invention is reasonable in structural design, simple in structure, good in sealing property, safe and reliable in use, and long in service life.
Owner:WUZHOU VALVE

Water supply and drainage dispatching branch pipe butt joint supporting device used for municipal engineering

The invention discloses a water supply and drainage dispatching branch pipe butt joint supporting device used for municipal engineering. The device comprises a base and a mounting seat; the base is placed on the ground where a water pipe is located, and the top of the base is provided with a movable groove; and the mounting seat is welded to the top of a supporting rod, and a motor is fixed in the side end of the mounting seat in an embedded manner. The device comprises a knob, bottom blocks and guide grooves; the knob is in bearing connection to the edge end of the base, one end of the knob penetrates through the base and is connected with a first screw, and the top of an adjusting block is in shaft connection with a guide rod; the bottom blocks are located in top grooves and arranged on second screw rods in a threaded and sleeving manner, fixing rings are welded to the tops of the bottom blocks, and third screw rods are connected to one ends of bevel gear rollers; and the guide grooves are formed in the upper end face of the mounting seat. According to the water supply and drainage dispatching branch pipe butt joint supporting device used for municipal engineering, pipeline flange ports can be cleaned while positioning and butt joint are conducted on pipelines, impurities are prevented from affecting the sealing performance after butt joint, and meanwhile the device can be suitable for supporting operation on the ground with different slopes.
Owner:阜阳市市政园林工程公司

Piston ring opening gap detection device and method

InactiveCN107525451AEasy to install horizontallyControl installation locationMechanical clearance measurementsPiston ringEngineering
The invention relates to the technical field of piston ring detection and more particularly to a piston ring opening gap detection device and method. The detection device includes an auxiliary cylinder having a cylindrical shape and a hollow interior. The upper side surface of the auxiliary cylinder is provided with a handheld lever. The detection method applied to the detection device comprises steps of: removing a piston ring from a piston; placing the piston ring at a designated location in a cylinder liner by using the auxiliary cylinder; detecting an opening gap by using a feeler gauge; and finally comparing a detection value with a standard value to obtain a detection result. The auxiliary cylinder facilitates the horizontal installation of the piston ring and controls the installation position of the piston ring in the cylinder liner. The detection method can quickly and conveniently detect the opening gap of the piston ring and prevent the opening gap of the piston ring from unsatisfying a requirement, influencing airtightness, resulting in oil leakage, and causing security risks.
Owner:合肥云内动力有限公司

Bag turning centrifugal machine

The invention discloses a bag turning centrifugal machine. The bag turning centrifugal machine comprises a rack, a hollow spindle, a drum assembly, a shell body assembly and a rotation power device. A push rod penetrates in the spindle. The tail end of the push rod is connected with a bag turning power device. One end of the push rod penetrates through a through hole formed in a drum bottom to enter an inner cavity of a drum, and the end of the push rod is provided with a material pushing disk. The inner side of the drum wall is provided with a filter bag. One end of the filter bag is arranged at an outer edge opening of the drum. The other end of the filter bag is arranged on the material pushing disk. At least three support rods are evenly distributed on the material pushing disk in the circumferential direction. Material blocking rings are detachably arranged at the other ends of the support rods. The spindle drives the push rod to rotate synchronously through a driving mechanism. The shell body assembly comprises a rear end plate, a cylinder-shaped shell body and a front end cover. A water-seepage-proof and airproof telescopic cover is connected between the cylinder-shaped shell body and the front end cover. The lower end of the telescopic cover is provided with a material discharging hole. The front end cover is provided with a material feeding pipe. The rack is provided with a cover pushing hydraulic cylinder which drives the front end cover to move. The bag turning centrifugal machine is simple in structure, small in covering area, long in service life, and good in sealing performance.
Owner:ZHANGJIAGANG ZHONGNAN CHEM MACHINERY

Solar panel packaging equipment

The invention provides solar panel packaging equipment, and belongs to the technical field of new energy equipment. The problem that an existing solar panel is poor in packaging quality is solved. Thesolar panel packaging equipment comprises a base and a turntable, and the turntable is vertically connected with a plurality of positioning columns; suckers are arranged at the top ends of the positioning columns; a feeding mechanism is arranged on one side of the turntable; supporting plates are horizontally fixed to the positions, on the two sides of the turntable, of the base. A sliding base is slidably connected to the supporting plate. The two sliding seats are rotationally connected with guide wheels; a tensioning spring is further arranged between the sliding base and the supporting plate, a rotating column is rotationally connected to the sliding base, a distance fixing disc is rotationally connected to the upper end of the rotating column, a guide plate is vertically and fixedlyconnected to the lower end of the rotating column and is parallel to the distance fixing disc, a sealant injection pipe is further arranged on the sliding base, and a sealant feeding mechanism capableof quantitatively conveying sealant to the sealant injection pipe is arranged on the base. According to the solar panel packaging equipment, glue filling packaging can be carried out on the edge seams of the solar panel, and the packaging quality is improved.
Owner:瞿磊

Modular self-dredging cloth bag fine filtering device

The invention discloses a modular self-dredging cloth bag fine filtering device, and belongs to the technical field of gas filtration. The filter bag can be divided into a plurality of independent filter units in a modular manner; on one hand, dust carried in air is bounced off through the elastic spherical air bag under the action of airflow on the outer side of the filter bag, and the filteringpressure of the filter bag is reduced; on the other hand, the vibration transmission effect of the elastic spherical air bag and the self-effect of airflow are utilized to cause air resonance on the surface of the filter bag and apply certain physical contact, accumulation and blockage of dust on the surface of the filter bag are reduced, and the filtration efficiency is guaranteed. The multi-section corrugated sleeve is arranged on the inner side of the filter bag, the difference between the internal pressure and the external pressure on the two sides of the filter bag serves as a starting condition, open filtering after unfolding and closed back flushing after reshaping are achieved to realize self-dredging, back flushing ash removal is conducted through external power without human intervention or halting, filtering and dredging work is automatically conducted in the whole process, and the dust removal and filtering efficiency is greatly improved.
Owner:朱彬苇

Slow-closing type check valve with low flow resistance

The invention relates to a check valve, belongs to the technical field of valves, and aims to solve the problem in the prior art that when a check valve is opened and closed under a small flow rate, aserious water hammer effect is generated to cause large impact wave and noise. A slow-closing type check valve with low flow resistance comprises a valve body, a valve seat, a valve clack, an end cover, a rotary shaft and a torsional spring; the valve seat is mounted on the inlet side of the interior of the valve body; the end cover is mounted on the side face of the valve body; on end of the torsional spring is connected with the shaft end of the rotary shaft; the other end of the torsional spring is connected with the end cover; and the valve clack is connected with the valve body through the rotary shaft. When a medium flows reversely, the upper and lower incident flow areas of the valve clack on the rotary shaft are different, the medium pushes the valve clack to generate closing rotary torque, the valve clack starts closing, at the same time, the torsional spring is driven to start torsion reversely as the closing force of the valve clack becomes larger and larger, the medium closing force is counteracted through increased torsional torque, and the valve clack is slowly closed, so that the water hammer effect is effectively eliminated, and generation of the impact wave and noise is avoided.
Owner:HARBIN HBC VALVE

Chemical condenser

The invention discloses a chemical condenser which comprises a base, fixing holes, a cooling shell, a mounting base, a liquid inlet pipe, a liquid outlet pipe, a water inlet pipe, a water outlet pipe and a connecting assembly. The fixing holes used for fixed mounting are formed in the two sides of the surface of the base, the cooling shell is mounted on one side of the upper end of the base, and the cooling shell is in a U shape; the water inlet pipe and the water outlet pipe are arranged at the two ends of one side of the cooling shell correspondingly, penetrating holes are formed in the two ends of the cooling shell correspondingly, and a flow guide assembly is arranged in the cooling shell, so that the flowing speed is conveniently controlled and adjusted; by rotating a rotating sleeve, the rotating sleeve drives a connecting ring to rotate, the connecting ring drives a mounting screw sleeve to rotate through a meshing tooted bar and a meshing gear; and the mounting plate moves along the surface of the mounting bolt along with rotation of the mounting screw sleeve, so that the mounting plate moves towards the interior of the mounting base, and quick mounting of the mounting plate and the heat exchange assembly is facilitated.
Owner:倪婷婷

Pipeline connecting structure for water conservancy project

The invention discloses a pipeline connecting structure for a water conservancy project. The pipeline connecting structure comprises a bottom box and a pipeline, fixed frames are fixedly installed at the left end and the right end of the top of the bottom box, a cross beam is fixedly installed between the tops of the two fixed frames, first bearing seats are fixedly installed at the ends, close to each other, of the upper portions of the two fixed frames, a rotating rod is rotatably connected between the two first bearing seats, the outer surface of the rotating rod is fixedly connected with two driving gears in a sleeved manner, a driving motor is fixedly installed at the upper end of the right end of the right fixed frame, and the output end of the driving motor penetrates through the right fixed frame and is fixedly connected with the right end of the rotating rod. A sliding rail is fixedly installed on the inner bottom wall of the bottom box, second bearing seats are fixedly installed on the left inner wall and the right inner wall of the bottom box, a lead screw is rotationally connected between the two second bearing seats, a lead screw nut is movably connected to the outer surface of the lead screw, a sliding block is fixedly installed at the bottom of the lead screw nut, and the sliding block is slidably connected with the sliding rail. The pipeline connecting structure is compact in structure and capable of rapidly completing connection between pipelines.
Owner:杨坤华

Anti-torsion crack and abrasion-resistant rubber core of blowout preventer

The invention provides an anti-torsion crack and abrasion-resistant rubber core of a blowout preventer. The anti-torsion crack and abrasion-resistant rubber core of a blowout preventer comprises a rubber body and support bodies uniformly distributed in the rubber body, wherein each support body comprises a top plate, a vertical plate and a bottom plate; the vertical plate is arranged between the top plate and the bottom plate; an oblique plate is also connected between the top plate and the vertical plate; a vertical support plate is also connected between the top plate and the bottom plate and between the oblique plate and the bottom plate; a transverse support plate is also arranged between the vertical plate and the vertical support plate and between adjacent vertical support plates. According to the anti-torsion crack and abrasion-resistant rubber core of a blowout preventer provided by the invention, strip reinforcing ribs are replaced by plate-like reinforcing plates so that the stability of the support bodies is better; the transverse plates between the top plate and the bottom plate and between the oblique plate and the bottom plate are arranged uniformly rather than in one-to-one correspondence, a perfect support effect can be realized, and local stresses of the support bodies can be dispersed, thereby further improving the stability of the support bodies and avoiding frequent falling apart and torsion crack.
Owner:四川新为橡塑有限公司

Storage equipment used in meat products and having defrosting function

The invention relates to storage equipment used in meat products and having a defrosting function. The storage equipment comprises a main body, a door body and an operation plate and further comprisesa defrosting mechanism and a fixing mechanism. The defrosting mechanism comprises a connecting box, a lifting assembly, a fixing box and two water spraying assemblies. The lifting assembly comprisesa telescopic frame, a drive unit, two connecting units and two hinge blocks. The fixing mechanism comprises a support, a connecting rod, a fixing block and a plurality of first springs. According to the storage equipment used in meat products and having the defrosting function, by means of the defrosting mechanism, frost on the inner wall of the main body can be scraped off, manual clearing is notneeded, defrosting convenience is improved, by means of the fixing mechanism, the position of the door body is limited, and the situation that due to aging of the equipment, the door body gets loose,and airtightness of the equipment is influenced is avoided.
Owner:河南沣瑞食品有限公司

3D mechanical probe

The invention discloses a 3D mechanical probe. The 3D mechanical probe comprises a base, an acoustic window which is arranged on the base and is connected with the base in a matching manner, and a buckling structure which is used for clamping the acoustic window and the base and can enable the acoustic window and the base to move relatively. The 3D mechanical probe has the advantages that under the connection effect of the buckling structure, when the temperature of the probe rises or falls, namely, the coupling liquid in the cavity is heated to expand or shrink, the acoustic window can move upwards or downwards relative to the base, the problem of excessive internal positive pressure or negative pressure cannot be generated, therefore, the use of a volume compensation device can be avoided while the influence on the sealing performance due to the great change of the internal pressure is avoided, so that the interface design can be reduced, and the problems of coupling liquid leakage and difficulty in removing bubbles in the cavity due to the additional arrangement of the volume compensation device are solved.
Owner:上海爱声生物医疗科技有限公司

Continuous feeding device for papermaking waste residue

A continuous feeding device for papermaking waste residue belongs to the technical field of feeding devices for papermaking waste residue and comprises a feeding barrel, a feeding cylinder, a pressing bin and a feeding bin. The feeding cylinder is movably sleeved in the feeding barrel, the pressing bin is disposed above the feeding barrel and communicated with the feeding barrel, the feeding barrel is perpendicularly connected with the pressing bin, an arc-shaped smooth transitional structure is disposed at a joint of the feeding barrel and the pressing bin, a turning plate used for pressing materials is fittingly disposed in the pressing bin, the feeding cylinder is fixedly connected with a piston, the piston is fixedly connected with a piston rod, and a cooling jacket is fittingly arranged on the outside of the feeding barrel. The cooling jacket is added to the outside of the feeding barrel, the temperature of the materials is reduced, and a sealing function is realized. In addition, a rod sleeve, the piston rod, the piston and the feeding cylinder form a pushing device, and feeding continuity and stability of a system are guaranteed. Furthermore, the smooth transitional structure is arranged at the joint, and accordingly the continuous feeding device for papermaking waste residue can continuously, stably and safely feed the papermaking waste residue required by cracking of a high-temperature sealing cracking kettle.
Owner:仁精科技(昆山)有限公司

Novel air insulation vacuum circuit breaker

The invention provides a novel air insulation vacuum circuit breaker, and belongs to the field of electric equipment. The novel air insulation vacuum circuit breaker comprises a circuit breaker shell,an operating mechanism, an arc extinguishing device, protection systems and a contact point system. Electromagnets, a permanent magnet slider and a mechanical slider are arranged in an arc extinguishing chamber of the arc extinguishing device, a lower contact point is fixedly mounted on the mechanical slider, the electromagnets and the permanent magnet slider can be matched with one another to drive the mechanical slider to slide in the left-right directions, accordingly, the lower contact point can be driven to move in the left-right directions, can be in contact with an upper contact pointand can be separated from the upper contact point, and the novel air insulation vacuum circuit breaker can be switched on and off; integral power systems are arranged in the vacuum arc extinguishing chamber, accordingly, the problem of influence on sealing due to internal and external transmission of existing vacuum arc extinguishing chambers and seal air chambers can be solved, the air tightnessof the novel air insulation vacuum circuit breaker can be improved, and the service life of the novel air insulation vacuum circuit breaker can be prolonged; the novel air insulation vacuum circuit breaker is good in air tightness, long in service life and convenient to maintain.
Owner:HUIWANG ELECTRIC

Current sharing control device of DC/DC power supply module

The invention discloses a current sharing control device of a DC / DC power supply module. The device specifically comprises a control housing, one side of the control housing is provided with a heat dissipation fan, one side, far away from the heat dissipation fan, of the control housing is provided with an air outlet window, one side, close to the heat dissipation fan, of the inner wall of the control housing is provided with an air inlet window, and the air outlet window and the air inlet window are internally provided with air grids; the two sides of the control device are both provided with ejector rods, the sides, away from the control device, of the ejector rods are connected with a linkage device, one side of the linkage device is provided with a push rod, and the end, away from the linkage device, of the push rod is connected with an air grid. The current sharing control device of the DC / DC power supply module, which relates to the technical field ofcurrent sharing control, can automatically control the start and stop of a heat dissipation device according to the change of a use environment, saves energy, has the stability less affected by environmental factors, has a long service life, is not easy to damage, and has good safety, air tightness and protection performance.
Owner:ZHEJIANG DOT LIGHTING

Sealing ring for polyferric sulfate reaction kettle and working method

The invention discloses a sealing ring for a polyferric sulfate reaction kettle and a working method. The sealing ring comprises an upper base, wherein a first through hole is formed in the upper endof the upper base, an upper mounting plate is fixedly connected to the bottom end of the upper base, a lower base is arranged below the upper base, a second through hole is formed in the bottom end ofthe lower base, a lower mounting plate is fixedly connected to the upper end of the lower base, a sealing ring is movably mounted between the upper mounting plate and the lower mounting plate, and four sets of mounting holes are formed in the upper mounting plate, the lower mounting plate and the sealing ring. The sealing ring for the polyferric sulfate reaction kettle can avoid the problems thata bearing is lack of lubricating oil and a sealing ring is corroded due to long-term use, the bearing is difficult to rotate and the sealing performance of the sealing ring for the polyferric sulfatereaction kettle is influenced, can guarantee the sealing effect of the sealing ring, and is beneficial to long-term use, the sealing performance of the sealing ring for the polymeric ferric sulfate reaction kettle is improved, and the sealing effect of the sealing ring is guaranteed.
Owner:马鞍山健鼎化工有限公司

An Improved Stop Valve

The invention relates to an improved cut-off valve, comprising a valve body, the valve body is provided with a transition cavity, and the two sides of the transition cavity are respectively provided with an inlet channel and an outlet channel, and the transition cavity, the inlet channel and the outlet channel are connected wherein, the bottom end of the transition cavity is provided with a drainage channel, the drainage channel is a cylindrical structure, the drainage channel is parallel to the outlet channel, and is arranged opposite to the outlet channel, and a fixed plug is arranged in the drainage channel , simple structure, can effectively filter out the impurities in the fluid flowing through the stop valve, safe and reliable, and at the same time increase the service life and save costs.
Owner:JIANGSU HUATAI ELECTRIC POWER ELECTRONICS INSTR

High temperature and high pressure true triaxial direct shear fracture seepage coupling test device and its application method

The invention relates to a high-temperature and high-pressure true triaxial direct shear fracture-seepage coupling test device. Two first indenters and two pressure components are arranged above and below the rock sample in a manner symmetrical to the center of the rock sample. The two second indenters are arranged on the left and right sides of the rock sample in a symmetrical manner with respect to the center of the rock sample. The first indenter includes a first indenter main body provided with a groove. A part of the pressure component is accommodated in the groove. The pressure component includes a rubber bladder and a backing plate, and the rubber bladder applies pressure to the rock sample through the backing plate. The seepage medium in the first seepage network groove provided on the main body of the first indenter and the second seepage network groove provided on the backing plate applies osmotic pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The beneficial effect is that the test device is combined with a triaxial testing machine, can carry out a true triaxial direct shear fracture seepage test on a rock sample under high temperature and high pressure conditions, and has high practicability and reliability.
Owner:NORTHEASTERN UNIV LIAONING

Flexible lifting appliance for cab

The invention discloses a flexible lifting appliance for a cab. The flexible lifting appliance is provided with a lifting appliance main frame, the lower end of the lifting appliance main frame is symmetrically connected with front suspension arms in a sliding mode, the lower end of the lifting appliance main frame is connected with rear suspension arms used in cooperation with the front suspension arms in a sliding mode, the symmetrical front suspension arms and the independent rear suspension arms are connected with a left door frame, a right door frame and a rear window frame of the cab correspondingly, three-point suspension of the upper part of the cab is realized, a front suspension arm adjusting assembly and a rear suspension arm adjusting assembly are arranged on the inner side of the lifting appliance main frame, the front suspension arm adjusting assembly is used for adjusting the distance between the symmetrical front suspension arms so as to be matched with the width of the cab, and the rear suspension arm adjusting assembly is used for adjusting the vertical distance between the rear suspension arms and the front suspension arms so as to be matched with the length of the cab, three-point suspension is carried out on the upper portion of the cab, the influence on sealant coating and PVC coating processes on the local portion of the lower portion of the cab is effectively avoided, the suspension points are the left door frame, the right door frame and the rear window frame of the cab, and it can be guaranteed that long cabs of various models are horizontally suspended and do not incline.
Owner:DESIGN INST NO 9 MINISTRY OF MECHINE BUILDING

A squeeze type automatic sealing gate valve

The invention discloses an efficient extrusion type automatic sealing gate valve. The efficient extrusion type automatic sealing gate valve comprises a gate valve body, a valve rod and a positioning block, the valve rod is arranged on the inner side of the gate valve body, the inner wall of a side window is attached to the edge side of a filter cartridge, moreover, the filter cartridge is arrangedat the bottom of the inner side of the gate valve body, a bottom plate is fixed at the bottom end of a valve plate, moreover, the bottom end of the bottom plate is attached to the upper end surface of a contact plate, moreover, the contact plate is fixed in the gate valve body, the positioning block is fixed on the upper end surface of the contact plate, and the inner side of the positioning block is attached to the edge side of the bottom plate. According to the efficient extrusion type automatic sealing gate valve, a novel structural design is adopted so that the efficient extrusion type automatic sealing gate valve can perform extrusion self-locking after the valve rod rotates to control the gate plate for closing, the phenomenon that due to the fact that the valve rod and the gate plate are loosened, the sealing performance is affected is avoided, moreover, a extrusion positioning structure is designed, so that the stability of the gate plate during closing is further ensured, meanwhile, a detachable filtering structure is designed, and the filter structure can also cooperate with the gate plate for positioning and sealing, so that the overall sealing performance of the efficient extrusion type automatic sealing gate valve is ensured.
Owner:TANGSHAN WEIDE MARINE EQUIP CO LTD

High temperature and high pressure conventional triaxial direct shear fracture seepage coupling test device and its application method

The invention relates to a high-temperature and high-pressure conventional three-axis direct shear fracture-seepage coupling test device. Two shear pressure heads and two pressure components are arranged above and below the rock sample in a manner symmetrical to the center of the rock sample. The shear ram includes first and second shear ram bodies. Pressure components include rubber bladders and backing plates. A portion of the pressure assembly is within the space formed by the height difference between the first and second shear rams. The rubber bladder applies pressure to the rock sample through the backing plate. The seepage medium in the first seepage network groove provided on the main body of the second shear pressure head and the second seepage network groove provided on the backing plate applies osmotic pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The beneficial effect is that the test device can carry out conventional triaxial direct shear fracture seepage tests under high temperature and high pressure conditions. The simple structure, the optimized sealing design, the connection mode of the piston part and the rubber bladder, and the design of the liquid injection method greatly improve the practicability and reliability of the present invention.
Owner:NORTHEASTERN UNIV LIAONING
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