116 results about "Stuffing box" patented technology

A system includes a fluid end having a fluid end face and a recess extending toward a base. The system also includes a pressure ring extending from the fluid end face, the pressure ring having a pressure ring bore diameter larger than a fluid end bore diameter. The system further includes an adjacent ring coupled to the fluid end, the pressure ring positioned between the adjacent ring and the base, wherein at least one fastener extends through an aperture of the adjacent ring to couple the adjacent ring to the fluid end. The system includes packing material positioned within at least a portion of the pressure ring bore, the packing material positioned such that axial movement toward the fluid end is blocked by the base.

The invention relates to the field of sealing element detection, and discloses a sealing performance detection device for a valve sealing element, which comprises an operation table, a first locking assembly is arranged on the operation table, the first locking assembly comprises a first air cylinder, and the output end of the first air cylinder is fixedly connected with a locking block through a piston rod. A linkage assembly is arranged on the side surface of the piston rod and used for synchronously transmitting driving force of the first air cylinder to the heat preservation cover and driving the heat preservation cover to move along the operation table. When the first locking assembly moves towards the end of the valve rod along the operation table and completes fixation of the valve rod, the heat preservation cover synchronously covers the stuffing box along with movement of the first locking assembly, a closed heat preservation space is formed, temperature fluctuation in the box is effectively reduced, uniform distribution of a temperature field is guaranteed, and heat preservation efficiency is improved. Meanwhile, the first air cylinder synchronously drives the first locking assembly and the heat preservation cover, an independent driving source does not need to be additionally arranged, and the heat preservation cover has the two-way adjusting capacity of continuous heat preservation and rapid heat dissipation.

The hollow containers (3, 4) are arranged above a hollow column (2), the hollow column (2) is arranged around the liquefied gas pump (P), and a cable (8) for installing / drawing the liquefied gas pump (P) penetrates through the central part of the containers (3, 4) from the lower part to the upper part. The containers (3, 4) are provided with: lower plate members (5, 6) having cable through-holes (9, 10), through which the cables (8) can pass, in the center thereof; and a cartridge member (12) provided around the cable through-holes (9, 10) in the center of the lower plate members (5, 6) and having a cable insertion hole (13) in the center, the cable insertion hole (13) allowing the cable (8) to be inserted therethrough. The cartridge member (12) is provided with opening diameter adjustment mechanisms (14, 20) that adjust the size of the opening diameter of the cable insertion hole (13).

The utility model relates to a novel thickener bottom stirring device. A conical bottom cavity is formed below the bottom of a thickener, an upper stirring shaft is rotationally connected with the bottom face of the thickener through a stuffing box, the stuffing box is provided with a matched stuffing gland, the space between the stuffing box and the upper stirring shaft is filled with stuffing, and a stirring impeller is arranged at the end, on the inner side of the thickener, of the upper stirring shaft. The transmission mode between the upper stirring shaft and the output shaft of the speed reducer all-in-one machine is chain transmission, so that the two shafts are not in the same vertical direction, and the speed reducer all-in-one machine is prevented from receiving a medium leaked from a stuffing box; the second protection plate is arranged on the upper stirring shaft, the edge of the second protection plate is located on the outer side of the first protection plate, the first protection plate is arranged on the bottom face of the cone bottom cavity, a closed pattern is formed on the bottom face of the cone bottom cavity, and leaked media are sealed to the area, deviating from the stirring shaft, of the bottom of the cone bottom cavity. The overflow port is formed in the outer side of the first protection plate of the cone bottom cavity, is lower than the top end of the first protection plate and is used for discharging leaked media.

The utility model discloses a modularized artificial wetland experimental device which comprises a stuffing box, a plurality of groups of isolation net-shaped partition plates are arranged in the stuffing box from top to bottom, the interior of the stuffing box is divided into a plurality of groups of stuffing cavities through the isolation net-shaped partition plates, and wetland stuffing is arranged in the plurality of groups of stuffing cavities. A plurality of groups of arc-shaped sealing plates corresponding to the packing cavities are hinged to the packing box, sealing rubber strips for sealing are arranged on the edges of the arc-shaped sealing plates, and the sealing rubber strips are tightly pressed and attached to the edges of the packing box; according to the modularized artificial wetland experimental device, only the filler of a certain layer can be replaced under the condition that other layers are not influenced, so that an experiment can be quickly and effectively carried out, the use and the assembly are more convenient, the filler can be replaced according to experimental requirements, the convenience of replacing the filler is improved, and the working efficiency is improved. Therefore, the practicability of the equipment is improved.

This invention relates to the field of control valve technology, and specifically discloses a control valve with an anti-leakage mechanism. A control component is rotatably connected to the top of the valve body, a buffer component is fixedly connected to the inner side of the valve body, and the side of a contact component is fixedly connected to the inner side of the valve body. The inner side of the contact component is threadedly connected to the side of the control component. The control component includes a valve stem, a rotating rod is fixedly connected to the top of the valve stem, and a valve core is fixedly connected to the bottom of the valve stem. This control valve with an anti-leakage mechanism, by providing a contact component, allows lubrication to reduce friction between the valve stem and the stuffing box, reducing wear caused by friction. When the wear on the valve stem surface is small, it can better fit with the packing, allowing the packing to more tightly fill the gap between the valve stem and the stuffing box, thereby reducing the possibility of media leakage and improving the valve's sealing performance.

A mounting jig 10 is provided with a jig body 11 comprising: a cylindrical barrel part 13 which is externally fitted to a shaft A and which has a tape member 1 wound around the outer circumference thereof; a driven gear 14 which is continuous with the barrel part 13 and which rotates together with the barrel part 13 upon receiving a rotational driving force; and a pressing pin 16 which presses an end part of the tape member 1 against the outer circumferential surface of the barrel part 13. The pressing pin 16 is configured so as not to hinder slide movement of gland packings 1a, 1b formed by winding the tape member 1 around the outer circumference of the barrel part 13, in a direction away from the driven gear 14 along the axial direction of the barrel part 13. The jig body 11 is configured to be attachable to a lateral side of the shaft A.

The utility model provides a filler sealing structure for a slurry pump and the slurry pump. The filler sealing structure comprises a shaft sleeve, a packing, a sealing ring and a gland. The shaft sleeve is used for fixedly sleeving a shaft; the shaft sleeve and the shaft hole of the stuffing box form an annular cavity with one end open. The number of the packings is multiple, and all the packings are arranged in the annular cavity. The number of the sealing rings is multiple, and the sealing rings are arranged in the annular cavity. The shaft sleeve is sleeved with the gland, and the gland is used for blocking the opening of the annular cavity and limiting the packings and the sealing rings in the axis direction of the shaft sleeve. According to the packing sealing structure for the slurry pump and the packing sealing mode adopted by the slurry pump, the sealing effect can be effectively enhanced, meanwhile, due to the arrangement of the multiple sealing rings, abrasion to the shaft sleeve can be relatively reduced, the service life of the pump is prolonged, and practicability is high.

1. The name of the design product: mud pump accessories. 2. The use of the design product: packing box for plunger type mud pump, and integrated cylinder sleeve for plunger type mud pump. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

This utility model provides a high-temperature sealing triple eccentric butterfly valve, which exhibits high stability under high-temperature conditions. It includes a valve shaft, a valve body, and a valve plate. The top and bottom of the valve body have mounting holes for connecting the shaft. A fluid channel penetrating the valve body is formed in the middle. The valve plate is installed within the valve body. The valve shaft passes through the mounting holes, through a stuffing box and a bearing bracket, and connects to the valve plate located within the fluid channel. The mounting holes at the top and bottom of the valve body are connected to heat insulation seats. Dustproof rings and spacers fitted onto the valve shaft are installed on the inner sides of the two heat insulation seats. Heat dissipation valve covers are bolted to the ends of the two heat insulation seats furthest from the valve body. Heat dissipation fins are provided in the middle of each of the two heat dissipation valve covers. A stuffing box is provided at the end of each heat dissipation valve cover furthest from the valve body. Heat-insulating bearing brackets are also bolted to the ends of the two heat-insulating valve covers furthest from the valve body. A first heat-insulating cavity is formed in the middle of each of the two heat-insulating bearing brackets.

According to the corrosion-resistant hard alloy valve element and valve seat for the centrifugal machine, a plugging block capable of moving in the radial direction is arranged in a valve element and extends out of a plugging flow channel in advance when the valve element is closed, so that a complete spherical sealing face is formed in the valve element, and in the rotating closing process of the valve element, corrosive media are effectively prevented from entering a valve cavity; compared with the prior art, through the operation of isolating the corrosive medium, the sealing reliability and durability are remarkably improved, a complex stuffing box does not need to be configured for the valve rod, and the maintenance cost is reduced; meanwhile, the indicating cylinder and the indicating ball which are communicated with the valve cavity are arranged, and early warning can be conducted in time when leakage happens to the sealing face; in addition, the modular design of the integral valve body, the detachable valve seat and the valve core is adopted, so that the manufacturing and maintenance difficulty is reduced; a drainage cylinder and a guide ring are additionally arranged in a valve seat flow channel, direct scouring of media to a sealing face can be effectively relieved, and the service life of the valve is further prolonged.

The application discloses an experimental testing device and a testing method suitable for high-temperature lead-bismuth erosion, and belongs to the technical field of nuclear energy experimental testing devices. The device comprises a variable frequency motor, a motor support, a main shaft, a stuffing box, a shaft seat, a flange cover, a tank body, a mounting base, a test piece disc and a medium rotation prevention device. The output shaft of the variable frequency motor penetrates through the top cover of the motor support, the upper end of the main shaft is connected with the output shaft of the variable frequency motor through an elastic column pin coupling, and the stuffing box and the shaft seat are sleeved on the outside of the main shaft. The lower part of the motor support is detachably connected with the shaft seat, the shaft seat is detachably connected with the top of the flange cover, the flange cover is detachably connected with the top of the tank body, and the tank body is welded on the mounting base. The lower end of the main shaft extends into the tank body, and three test piece discs are arranged at equal intervals in the tank body, and test pieces are detachably installed on the test piece discs. The medium rotation prevention device is embedded in the tank body. The top edge of the tank body is connected with a protective gas inlet and a protective gas outlet, and the bottom is provided with a lead-bismuth medium inlet and outlet.

The application discloses a kind of dead zone-free discharge valve, including valve body, embedded branch pipe seat, valve stem, stuffing box, packing gland, valve cover, the valve body and embedded branch pipe seat integrally formed, the valve seat, inlet flow channel and outlet flow channel are equipped in the valve body, embedded branch pipe seat is connected with discharge pipeline or equipment, the valve stem is located in the center of valve body, from top to bottom including valve head, upper valve stem, connecting piece, lower valve stem and valve cover, the valve head is arranged in the upper end of upper valve stem, the upper valve stem is connected with lower valve stem by connecting piece, lower valve stem is lifted along with the lifting of upper valve stem, the valve head is engaged with valve seat, forms closed state, the upper end surface of valve head is substantially flush with the inner surface of process pipeline or equipment, forms theoretical dead zone-free space.The discharge valve structure is stable, and welding seam detection, heat treatment is convenient, effectively eliminates stress concentration, and safety factor is high.

The invention discloses a packing sealing structure applied to a high-pressure medium, and relates to the technical field of fluid mechanical sealing, the packing sealing structure comprises a pump body and a shaft body, the pump body is internally provided with a pump cavity, the upper end of the pump body is detachably provided with a stuffing box body, the stuffing box body is internally provided with a stuffing shaft sleeve, and the sealing cavity is internally provided with three groups of packing bodies; a lower water seal ring is installed between every two adjacent groups of packing bodies on the lower portion, a middle water seal ring is installed between every two adjacent groups of packing bodies on the upper portion, a packing gland is detachably installed on the surface of the shaft body above the uppermost packing body, and a pressure relief hole is formed in the surface of the packing box body on one side of the middle water seal ring. The lower water seal ring and the higher middle water seal ring are arranged in a grading mode, high-pressure media can be decompressed, gathered and integrated step by step, the pressure of the media is gradually attenuated to micro pressure from high pressure of a pump cavity, medium and low pressure leakage media are discharged in time in cooperation with the pressure relief holes, and the problems that a traditional single laminated packing is difficult to resist impact of the high-pressure media and prone to leakage are solved.

The utility model discloses a pump stuffing box dismounting device, which belongs to the technical field of stuffing box dismounting and comprises a dismounting main rod, threaded connecting rods, a dismounting ejector rod and an adjusting ring, the adjusting ring is mounted in the middle of the dismounting main rod, and the threaded connecting rods are respectively connected to two ends of the dismounting main rod. The two threaded connecting rods are in threaded connection with detachable ejector rods respectively. The device has the advantages that the device is placed between the stuffing box and the pump body support, the disassembling main rod and the threaded connecting rod are rotated, the disassembling ejector rods at the two ends can be driven to expand towards the two sides, the stuffing box and the pump body support are squeezed mutually, and therefore the mechanical jacking force of the screw acts on the stuffing box body, and the stuffing box is disassembled. Axial movement of the stuffing box is achieved, and the function of disassembling the stuffing box is achieved.

The application discloses a large-diameter high-pressure petroleum pipeline defect plugging device, which comprises two combined ring arms, two fixed ring arms and a stuffing box, the two combined ring arms are connected, the two fixed ring arms are connected, one end of the stuffing box is connected with one combined ring arm, the other end of the stuffing box is connected with one fixed ring arm, one combined ring arm is connected with one fixed ring arm, the combined ring arms, the fixed ring arms and the stuffing box are installed on a pipeline, and the bottom of the stuffing box is provided with a ring-shaped pointed part, the structure of the combined ring arms and the fixed ring arms is improved, the mass of the plugging device is greatly reduced, the plugging device is very convenient to carry, the light, mobile and rapid maintenance capacity is realized, and the local plugging of the oil pipeline can be realized in the shortest time when the local leakage of the oil pipeline occurs.

The application discloses a kind of for nuclear power plant heat sink system circulating water pump silt shaft seal, it is related to nuclear power circulating water pump technical field, it includes the packing base being arranged in the outside of main shaft, packing sleeve, packing, sand ring, packing box and packing gland, the packing sleeve is fixedly arranged on packing base, the packing is arranged in packing sleeve, the packing box is fixedly arranged on the top of packing sleeve, the packing gland is arranged in packing box and packing is compressed in packing sleeve, the sand ring is arranged in packing sleeve, the sand ring is located below packing close to packing base, the sand ring inside abuts and fits the outside of main shaft. The sand ring of the application installed in packing sleeve can prevent silt from entering packing, reduce the wear of packing during the operation of water pump, so as to improve the service life and reliability of circulating water pump.

The utility model discloses a spring roll forming stuffing machine, including the storage stuffing jar, the inside installation of storage stuffing jar is used for the discharge assembly of stuffing material stirring, the bottom of storage stuffing jar is connected with the split stuffing assembly for the shaping of stuffing material, the split stuffing assembly includes the split stuffing box intercommunication installation in the bottom of storage stuffing jar, the inside rotatory mounting of split stuffing box has the split stuffing tray, and the outside of split stuffing tray is provided with a plurality of groups of shaping grooves, the utility model discloses the setting of split stuffing assembly, and the stuffing material is arranged to the split stuffing box's in -feed pipe with certain pressure, and the stuffing material will extrude to the shaping groove inside split stuffing tray's outside, and the rotation of stuffing tray, and the excess stuffing material will be intercepted in the in -feed pipe, and the stuffing material of specific shape in the shaping groove will turn to below, and drop from the discharge port to the wrapper below, if a plurality of groups of shaping groove shapes volume are consistent, realize the effect that the stuffing material ration, shaping, unloading are stable, and the overall structure is simple and convenient operation, reduces the use cost of stuffing machine.

The invention relates to the field of reciprocating pump equipment, and discloses a horizontal reciprocating pump structure with conical surface positioning, which comprises a filler box, a plunger and a pump body, the plunger is arranged in the filler box, the outer wall of the filler box is provided with a filler pressing plate, the filler pressing plate is provided with a plurality of through holes, each through hole is internally provided with a stud, and the outer wall of the pump body is provided with threaded holes in one-to-one correspondence with the through holes. The stud can be in threaded connection with the threaded hole, a conical groove is formed in the outer wall of the pump body, a guide groove is formed in the inner wall of the pump body, the conical groove is communicated with the guide groove, the plunger can penetrate through the conical groove and the guide groove, and a circular truncated cone is arranged at one end of the stuffing box and can be in butt joint with the conical groove; automatic centering during assembly can be achieved by means of the self-centering characteristic of the conical surface, high concentricity of the pump body and the stuffing box can be guaranteed without relying on extremely small clearance fit, the conical surface has good assembly guidance quality, the clearance is large before the pump body is assembled in place, a worker can assemble the pump body conveniently, and the assembly efficiency is improved. The problem that cylindrical male and female seam allowances are small in gap and difficult to assemble is solved.

The utility model discloses an anti-coking, impact-resistant and vibration-resistant adjusting ball valve for coal chemical industry black water, and relates to the field of adjusting ball valves. In coal chemical industry black water treatment, a black water medium has the characteristics of high suspended matter content, high temperature, high alkali content, high corrosion content and high-hardness solid particle content, and abrasion, corrosion, coking jamming and driving failure of traditional valve internals are easily caused. Comprising a fixing shaft, a left valve body, a right valve body, a left valve seat, a right valve seat, a ball body, a valve rod and an executing mechanism, the ball body, the valve seats and valve body flow channels are spray-welded with tungsten carbide layers with the hardness larger than or equal to HRC65, the left valve seat and the right valve seat achieve two-way pre-tightening sealing through spiral springs and the ball body, and scraper type cutting edges are arranged on the sealing faces of the valve seats. The valve rod adopts a large-diameter high-strength design and is in anti-rotation connection with the ball body, and the stuffing box adopts a disc spring load limiting and pressurizing structure. The wear resistance, impact resistance and coking resistance are remarkably improved, bidirectional reliable sealing is achieved, stable driving under the high-torque working condition is guaranteed, the service life of the valve is prolonged, and the valve is suitable for the coal chemical industry black water extreme working condition.

The utility model discloses a horizontal unit stuffing box water retaining device, relates to the technical field related to water pump stuffing boxes, and solves the problems that when stuffing is abraded or aged, a shaft sleeve is abraded or a shaft is eccentric, a stuffing gland is too loose or is not fastened uniformly, and the pressure of a cooling medium is too high, dripping water of the stuffing is possibly excessive or overflows, and the water retaining effect is poor. The water retaining device comprises a water retaining structure, the water retaining structure comprises semicircular rings and a semicircular plate, the semicircular rings are fixedly connected to the side walls of the two sides of the semicircular plate, a plurality of rectangular fixing pieces with holes are fixedly connected to the outer circle sides of the semicircular rings, and the rectangular fixing pieces with the holes are evenly distributed in a semicircular ring shape. The water retaining structure is additionally arranged, so that the stuffing box area of the water pump can be covered, environmental pollution caused by overflowing of stuffing dripping water is effectively avoided, the stuffing dripping water can be collected at the bottom of the inner ring of the semicircular ring, and therefore the possibility of environmental pollution is reduced.

The invention provides a tool and method suitable for disassembling and assembling packing of a solid-containing plunger pump set, the disassembling and assembling tool comprises a hydraulic oil cylinder, a disassembling unit and an assembling unit, the hydraulic oil cylinder is arranged parallel to a packing box body, and a cylinder body of the hydraulic oil cylinder is fixed on a flange plate at the bottom of the packing box body; the dismounting unit comprises a jacking end cover, a pull rod and a dismounting pull disc. The dismounting pull disc is used for abutting against the packing structure and pulling the packing structure out of the packing box body. The assembling unit comprises a pushing end cover, a packing sleeve and a packing pushing base, and the packing pushing base is used for pushing the packing structure to the proper position of the packing box. Compared with the prior art, the disassembling and assembling tool has the advantages that the packing structure in the plunger pump packing box can be disassembled and assembled without assistance of a large press machine, so that the plunger pump packing box does not need to be regularly conveyed to an equipment manufacturer for maintenance, the on-site maintenance requirement is met, the convenience is improved, and meanwhile, the maintenance period and the maintenance cost are greatly saved.

The utility model relates to a hinged friction-free top-mounted ball valve, which comprises a valve body, a valve cover, a valve rod, a valve core, a valve seat and a stuffing box, the valve rod drives the valve core in the valve body to rotate to open and close, the valve core is hermetically matched with the valve seat, the valve rod is divided into an upper valve rod and a lower valve rod, and the valve core is divided into a left hemisphere, a wedge-shaped pressing block and a right hemisphere. The bottom of the left hemisphere and the bottom of the right hemisphere are hinged to the lower valve rod through pin shafts, the lower valve rod is rotatably positioned in the valve body, sliding grooves are formed in the upper portions of the left hemisphere and the right hemisphere, the left hemisphere and the right hemisphere are connected with the wedge-shaped pressing block through the sliding grooves, and the wedge-shaped pressing block moves downwards to open the left hemisphere and the right hemisphere so that the left hemisphere and the right hemisphere can be sealed with the valve seat. A long-strip-shaped inclined hole is formed in the circumferential wall of the inserting hole, and one end of the cylindrical pin penetrates through the long-strip-shaped inclined hole to be fixedly connected with the upper valve rod. By means of the specific design, the valve has the advantages of being compact in structure, small in valve opening and closing torque, rapid and convenient to open and close, high in sealing performance and long in service life.

The utility model relates to the technical field of centering devices, and provides a pump stuffing box installation centering device which comprises a positioning piece arranged on a shaft sleeve; the positioning column is arranged on the positioning piece and provided with an inserting part used for being inserted between the stuffing box and the shaft sleeve. By means of the technical scheme, the technical problems that in the prior art, positioning is not accurate and installation time is long when the stuffing box is installed are solved.

The utility model relates to the technical field of washing towers, in particular to a tail gas washing tower which comprises a base and a water tank installed on one side of the base and communicated with an inner cavity of the base, a circulating water pump is installed in the water tank, a communicated tower body is installed at the top end of the base, and a spraying head communicated with the output end of the circulating water pump is installed in the tower body. A washing cavity is formed in the tower body, an air inlet penetrating through the washing cavity is formed in the outer wall of the tower body, a loading and unloading cavity penetrating through the washing cavity is formed in the outer side wall of the tower body, and a sliding groove and an insertion hole formed in one side of the sliding groove are formed in the bottom of the loading and unloading cavity. The stuffing box, namely the stuffing, can be stably mounted in the washing tower through movable insertion of the plug and the insertion hole in the bottom of the loading and unloading cavity, and when the stuffing needs to be replaced, the stuffing box can be conveniently pulled out of the washing tower through the roller.

The utility model relates to the technical field of crude oil electro-desalting, in particular to an oil-water feeding distributor for strengthening crude oil desalting and dewatering effects, which comprises a feeding main pipe and a plurality of distributing heads which are arranged side by side at intervals and are provided with inner cavities, and stuffing boxes for vertically dividing the inner cavities into distributing cavities and feeding cavities are arranged in the centers of the distributing heads. A plurality of corrugated plates which are arranged side by side at intervals are arranged in the stuffing box, the upper end and the lower end of a clamping cavity between every two adjacent corrugated plates are correspondingly communicated with a distribution cavity and a feeding cavity respectively, the feeding cavity is correspondingly communicated with a feeding main pipe through a feeding branch pipe, and a plurality of distribution holes are formed in the outer cavity wall of the distribution cavity; according to the oil-water feeding distributor, the oil-water separation effect can be enhanced by increasing the diameter of water drops entering an electric desalting tank.

This utility model discloses a protective box for an audible and visual alarm, applied to a ship's cargo hold. A base plate is mounted on a mounting frame in the cargo hold, and the audible and visual alarm is mounted on the base plate, which also houses a cable packing gland. The box body is detachably mounted on the base plate, forming an inner cavity between the box body and the base plate to accommodate the audible and visual alarm. A first sealing part is located between the base plate and the box body; a second sealing part is located within the cable packing gland. Under normal operating conditions, the box body is open, and the audible and visual alarm is exposed. Under storm ballast conditions, the box body is closed, and the audible and visual alarm is located within the inner cavity. This design ensures that the audible and visual alarm is protected from mechanical damage and seawater immersion, extending the equipment's service life.

The invention discloses a cantilever type shafting quick dismounting structure capable of laterally discharging a cable, a cantilever shaft is of a hollow structure, one end of the cantilever shaft is installed on a box body B through a bearing, the end face is provided with a stuffing box, the other end of the cantilever shaft is provided with a spigot and a plurality of locking structures, and the cantilever shaft is matched with a hollow shaft on one side of a box body A through the spigot to realize opposite insertion and main support; the box body A is locked through the locking structure; internal threads are further arranged on the side, close to the locking structure, of the cantilever shaft and connected with a threaded pressing block provided with external threads, a wrench is arranged on the threaded pressing block, and when the wrench is rotated, the threaded pressing block moves in the cantilever shaft to compress or loosen the locking structure; a sliding block is arranged on the locking structure, and popping or retracting of the sliding block is triggered through compression or loosening of the threaded pressing block; a guide groove is formed in the hollow shaft of the box body A in the radial direction, and the box body A is locked or unlocked by popping up and retracting the sliding block of the locking structure. The invention further provides a quick disassembly and assembly method for the cantilever type shafting capable of laterally discharging the cable. The cable butt joint device has the advantages of high assembly and disassembly speed, simple cable butt joint and disassembly method, small occupied space and the like.

An integrally sealed micro flow regulating valve comprises a valve body and a valve cover seat, a medium channel is arranged in the valve body, a valve seat hole is formed in the upper end face of the valve body, the valve cover seat enters the valve seat hole to cut off the medium channel, a valve rod hole is formed in the valve cover seat, and a valve rod is arranged in the valve rod hole in a lifting mode. The lower portion of the valve cover seat is bent inwards to form a sealing ring seat, a valve sleeve cavity and a stuffing box are sequentially arranged in the valve rod hole upwards from the sealing ring seat, a sealing ring and a valve sleeve are arranged in the valve sleeve cavity, and a flow hole is formed in the valve sleeve. The top of the valve rod is an adjusting end, the adjusting end comprises a connecting part and an adjusting part, and the medium flow is controlled by moving the valve rod to adjust the gap between the gradient and the flow hole. Through the integrated structure that the valve cover seat is integrated with the valve sleeve cavity and the stuffing box, the adjusting part smoothly adjusts the gradient to be dynamically matched with the valve sleeve flow hole, and the sealing ring is matched with the valve rod connecting part, the problems that an existing micro flow adjusting valve is poor in structure dispersion positioning, low in adjusting precision and prone to inner leakage are solved.