335 results about "Butterfly valve" patented technology

The utility model relates to a kind of water body heavy metal pollution cyclic repair equipment, its structure is: three purification columns are positioned in the shell inner cavity circumference, heavy metal chelate particles are equipped in purification column;Water tank is connected at the lower end of shell, three water tanks of upper open are distributed in the circumference in water tank, the top of water tank corresponds with the position of purification column, the top of water tank is connected inlet pipe, extends water tank, pipe end portion has butterfly valve, the bottom of water tank is connected outlet pipe, extends water tank, pipe end portion has three-way valve;Positioning plate is connected at the upper end of shell, three water circulation pumps are peripherally arranged in positioning plate, the water inlet of water circulation pump upper end is communicated with the inner cavity of corresponding water tank by outlet pipe, the water outlet position of water circulation pump lower end corresponds with the upper end opening position of purification column. The repair equipment can repair heavy metal pollution water body by the purification column filled with adsorption material, and through water circulation system, improve water body repair efficiency, realize heavy metal recovery and the reuse of adsorption material.

This application provides a cleaning door for a dust collection duct in a guide trough, comprising a dust collection duct body. A fixing frame is fixedly installed on one side surface of the dust collection duct body, and the fixing frame is connected to the dust collection duct body. A cleaning door body is provided on the upper side of the fixing frame, and a connecting mechanism is provided between the cleaning door body and the fixing frame. This application, by setting up a cleaning door body and a connecting mechanism, allows the cleaning door body to be installed at key locations in the duct, such as tees, bends, and butterfly valves—areas prone to dust accumulation. This enables operators to regularly clean the inside of the duct, effectively preventing the accumulation of wet dust and powder, thereby ensuring unobstructed duct flow and the continuous, efficient operation of the dust collection system. The connecting mechanism securely connects the cleaning door body to the duct body. Flexible and reliable connection methods, such as hinges, are used, ensuring that the cleaning door can be easily opened when needed and tightly closed after cleaning to prevent dust leakage.

The utility model discloses a handle butterfly valve relates to pipeline transportation system field, and this handle butterfly valve, including valve core, valve rod and sealing ring, the arc strip is slid and is arranged to valve core side surface, and the inboard arc strip is inserted and is connected and is arranged carryover rod through spring, and the end portion carryover rod is slid and is arranged push rod, and the angle of associated valve core occurs carryover and is pressed against rubber ring, and the inboard installation groove of valve core is used to install rubber ring and is slid and is arranged arc strip, and the carryover rod is inserted and is connected and is arranged through spring and is extruded and pushes arc strip, and the end portion carryover rod is inserted and is connected and is arranged push rod, and the fixed block of push rod cooperation pipeline inner wall, when the valve core rotates and closes, and push rod is extruded and carries over, and the carryover of carryover rod is converted into elastic potential through spring, and then through arc strip extruded and push rubber ring, make rubber ring and outwardly occur deformation and press tightly gap and seal, and under the condition that rubber ring abrasion is not serious, can guarantee good sealing effect without changing and not leaking in the inside.

To provide a butterfly valve that enables rapid product supply while eliminating the possibility of foreign matter contaminating the fluid. [Solution] The butterfly valve 1 comprises a valve body 2 and a valve element 3. The valve body 2 is connected to a pipeline such as a water and sewage pipe and has an internal flow path 7 through which water and sewage flow. The valve element 3, which opens and closes the internal flow path 7, has a valve element base 8 and a connecting member 9 connected to the edge of the valve element base 8. The connecting member 9 has a valve element seat 11 that abuts against the valve body 2 when the valve element 3 closes the internal flow path 7, a shaft portion 12 connected to the valve element seat 11, and projections 13 and 14 protruding from the shaft portion 12. The edge of the valve element base 8 has a shaft portion housing groove 18 for housing the shaft portion 12 and projection portion housing grooves 19 and 20 for housing the projections 13 and 14. The connecting member 9 is pressed against the edge of the valve element base 8, the shaft portion 12 is housed in the shaft portion housing groove 18, and the projections 13 and 14 are housed in the projection portion housing grooves 19 and 20.

The present application relates to the technical field of hydraulic control butterfly valves, and in particular to a control method and system for a hydraulic control butterfly valve of a heat supply system based on DCS. The method comprises: establishing a plurality of equipment points on the basis of equipment parameters of a heat supply system, and setting a control sub-model for each of the equipment points; setting a primary control strategy for each of the equipment points on the basis of all control sub-models, and on the basis of working condition parameters, determining whether to generate a correction instruction; acquiring a feedback parameter for each of the equipment points, generating an operational risk value for each of the equipment points, and on the basis of all operational risk values, determining whether to generate an early warning instruction; and adding a control sub-module for each hydraulic control butterfly valve in the heat supply system based on DCS control to realize individual control of each hydraulic control butterfly valve, and by adding a feedback sub-module, adding an angular displacement sensor at an actuator to synchronously transmit an actuator displacement signal with an original sensor, thereby realizing precise monitoring of each hydraulic control butterfly valve, providing timely early warning of potential faults, and ensuring safe operation of the system.

This invention discloses an automatic fluid mixing device for coiled tubing drilling, belonging to the field of petroleum machinery technology. It includes a water supply line, a mixed fluid outlet line, an intelligent control terminal, a flow meter, a pressure sensor, a skid-mounted unit, a flexible hose, a first connecting pipe, a second connecting pipe, a third connecting pipe, a centrifugal pump, an electric throttle valve, and a drag-reducing agent pump. The water supply line is sequentially equipped with an inlet union, a first butterfly valve, and a filter. The electric throttle valve is located on the first connecting pipe, and the centrifugal pump is located on the second connecting pipe. The mixed fluid outlet line is equipped with a flow meter, a second butterfly valve, a third butterfly valve, and an outlet union. One end of the flexible hose is connected to the drag-reducing agent pump, and the other end is connected to the mixed fluid outlet line. A fourth butterfly valve is located on the third connecting pipe. This invention enables real-time adjustment of pressure and flow rate, as well as precise proportional mixing of the drag-reducing agent, improving the performance of the mixed liquid.

This utility model discloses a grinding device for processing butterfly valve stems, belonging to the technical field of butterfly valve stem processing equipment. It includes a base, a worktable fixedly connected to the surface of the base, a carrier plate fixedly connected to the surface of the worktable, a grinding frame mounted on the surface of the worktable, and a grinding assembly mounted at the bottom of the grinding frame. An electrostatic elimination assembly is installed on the surface of the worktable. The workpiece is placed on the surface of the carrier plate and secured by locking components. The grinding assembly at the bottom of the grinding frame grinds the workpiece, thereby improving its surface smoothness. An ion fan is connected to an air guide seat via a rotary joint and an air guide pipe. An air blowing hood is fixedly connected to the surface of the air guide seat. When electrostatic treatment of the working area is required, the ion fan is activated, and ionized air is blown along the air guide pipe to the air guide seat, and then blown from the opening of the air blowing hood onto the surface of the carrier plate, providing excellent electrostatic elimination performance.

The invention belongs to clamps, and particularly relates to a clamp for machining a sealing surface of a valve seat of a hard sealing butterfly valve. The clamp for machining the sealing face of the hard sealing butterfly valve seat comprises a bottom plate, the bottom plate comprises two faces forming a certain angle, the face parallel to the ground is a bottom face, the face forming a certain angle with the bottom face is an inclined face, a base is arranged on the inclined face and is a double-layer annular part, and a replaceable rough machining positioning ring or a replaceable finish machining positioning ring is arranged on the base. The method has the remarkable effects that (1) the operation process is simple, and the machining precision is high; and the workpiece can be clamped only by positioning and pressing, so that the tedious procedure of manual calibration in the clamping process and the dependence on the manual calibration level are avoided. And (2) the clamp is high in reliability. And the eccentric positioning plate is positioned by a pin, and meanwhile, a notch is designed for the eccentric side redundancy, so that the misoperation condition in the mounting process is prevented.

This utility model relates to the field of valve technology, and in particular to a butterfly valve that is easy to install. It includes a butterfly valve mechanism and a pre-reserved flange. An operating and fixing component is sleeved on the outside of the pre-reserved flange. The inner side of the operating and fixing component is spirally fitted to the outer side of an external component. An outer pipe flange is inserted into the rear end of the external component. The operating and fixing component includes a collar, with a contact ring plate fixedly connected to its inner side. A threaded hole is opened on the inner side of the collar. The external component includes a first permanent magnet plate, with an insertion hole opened on its inner side. An extension column is fixedly connected to the inner side of the insertion hole. A crimping ring is fixedly connected to the outer side of the extension column. A guide pin is fixedly connected to the bottom end of the first permanent magnet plate, and the guide pin is inserted into the guide hole. In this utility model, the device does not require external tools, solving the problem of butterfly valve fixing when the pipeline spacing is large, improving installation convenience, reducing labor intensity, ensuring construction progress, and demonstrating strong practicality.

The utility model discloses a bidirectional zero leakage's hard sealing butterfly valve relates to hard sealing butterfly valve technical field, and its technical scheme is: including butterfly valve seat main part, the butterfly valve seat main part inside is inserted with butterfly valve stem subassembly, and butterfly valve stem subassembly outside is equipped with butterfly plate unit, and butterfly plate unit includes butterfly plate body and two butterfly plate connecting piece parts, and butterfly valve stem subassembly includes butterfly valve stem, and butterfly valve stem both sides all are set up with the installation groove, and the beneficial effects of a bidirectional zero leakage's hard sealing butterfly valve are: through butterfly plate connecting piece part, the butterfly plate body is designed as detachable structure with butterfly valve stem, and the operator only needs to push the inclined head solution limit block, can easily remove the fixed connection of butterfly plate and butterfly valve stem, takes out butterfly plate from butterfly valve inside, completely changes the difficult situation of traditional in butterfly valve inside narrow space replacement sealing ring, significantly reduces the maintenance difficulty, greatly shortens the maintenance time, and greatly improves sealing ring replacement efficiency.

This invention discloses a self-locking butterfly valve linkage mechanism for switching between condensing and extraction / backflow operation modes in a 1000MW thermal power unit. It relates to the field of butterfly valves for thermal power units and includes a butterfly valve tube. Both ends of the butterfly valve tube are fixedly connected to connecting flanges. A connecting disc is fixedly connected to the top of the butterfly valve tube, and an actuator is bolted to the top of the connecting disc. Inside the butterfly valve tube, near the top and bottom, are two connecting blocks. A rotating shaft is rotatably connected between the two connecting blocks, and the outer surface of the rotating shaft is fixedly connected to the connecting blocks. A conical sealing plate is fixedly connected to the side of the connecting blocks. Inside the butterfly valve tube, symmetrically fixed to the sides of the connecting blocks, are a pair of connecting blocks (two secondary blocks). A flow divider is rotatably connected between the two connecting blocks (two secondary blocks). This invention, through the synchronous rotation mechanism of the pulley, belt, and flow divider, allows the flow divider to automatically adjust its angle when the valve is opened, diverting the inflow of water and effectively reducing the direct impact of the water flow on the side of the conical sealing plate.

This utility model belongs to the field of intake control technology and discloses an integrated intake structure for a screw compressor, including an intake valve, a butterfly valve, an adjusting lever, and a cylinder regulator. The intake valve and the butterfly valve are connected in series on the intake pipeline of the screw compressor, with the intake valve located between the butterfly valve and the screw compressor. One end of the adjusting lever is connected to the output end of the cylinder regulator, and the other end is connected to the sliding plate of the butterfly valve for adjusting the opening. The air source for the cylinder regulator comes from an oil separator tank connected to the screw compressor. The intake valve also has an intake port for connecting to the oil separator tank. This utility model can flexibly adjust the intake air flow according to the user's air demand, so as to balance the intake and exhaust of the entire system, reduce energy consumption, and integrate the intake valve, butterfly valve, adjusting lever, cylinder regulator, and electromagnetic vent valve into one unit, making the structure more compact, facilitating the adjustment of the overall installation position, and reducing costs through integration.

This invention discloses a production equipment for a butterfly valve plate frame, comprising a processing box and a support frame. The support frame is fixedly connected to the bottom of the processing box, and a support component is fixedly connected inside the processing box. Several support components for supporting the butterfly plate frame are arranged above the support component. A sandblasting assembly is arranged on the side of the processing box, comprising several sandblasting pipes, with the ends of the sandblasting pipes located on the side of the support components. An adjustment component for adjusting the position of the sandblasting pipe ends is also provided on the side of the processing box. A motor drives the butterfly plate frame to rotate continuously, allowing sandblasting processing at different positions on the butterfly plate frame. During sandblasting, the position of the sandblasting pipes relative to the butterfly plate frame can be adjusted by a first telescopic rod, and the lateral movement of the sandblasting pipes can be adjusted by the extension and retraction of a second telescopic rod, thus enabling more comprehensive sandblasting operations.

The application relates to a high-efficiency silica ash mortar emulsifying device and relates to the technical field of silica ash mortar emulsification, which comprises a base, the inside of the base is fixedly connected with a stirring tank, the bottom of the stirring tank is fixedly connected with a circulating mechanism, the circulating mechanism comprises a conveying pipe one, the outside of the conveying pipe one is fixedly connected with an emulsifying pump at the other end, the output end of the emulsifying pump is fixedly connected with a conveying pipe two, the outside of the conveying pipe two is fixedly connected with a butterfly valve, the outside of the butterfly valve is fixedly connected with a hose, the outside of the hose is fixedly connected with an elbow pipe, and the outside of the base is fixedly connected with an L-shaped support. In the utility model, the emulsifying pump extracts silica ash mortar at the bottom of the stirring tank, the silica ash mortar is conveyed through the conveying pipe one and the conveying pipe two, the elbow pipe direction is adjusted through a rotating assembly, silica ash mortar circulation emulsification is realized, the silica ash mortar emulsification effect and quality are improved, the conveying direction can be flexibly adjusted, the slurry body can be conveniently taken out, and the practicability of the device is improved.

This invention discloses a substrate glass raw material weighing system and method to overcome the shortcomings of existing technologies that easily lead to overfeeding and exceeding tolerances. The method employs a reducing weighing principle, weighing a fixed quantity of raw material, discharging a set weight of raw material, obtaining the remaining weight of raw material, and replenishing it to the fixed quantity for the next weighing. The system includes an electronic scale weighing unit, a feeding butterfly valve, a feeding device, and a control unit. All components are signal-connected, and the control unit executes the method steps. By maintaining a raw material reference within the scale and accurately replenishing the material, closed-loop control of the weighing process is achieved, effectively avoiding overfeeding and exceeding tolerances.

This invention relates to the field of mixing device technology, specifically to a rapid dispersing construction dry powder mixing device. It includes a frame with, in a clockwise direction, a vertical mixing station, a horizontal mixing station, a turning station, and an intermittent station arranged sequentially. It also includes a swing bracket rotatably connected to the frame, and a swing mechanism on the frame to drive the swing bracket to periodically swing with varying amplitude. A rotary cylinder is rotatably connected to the frame and rotates intermittently at 90° clockwise. A pneumatic butterfly valve is connected to the frame, and four mixing units are arranged in an array. Each mixing unit includes a vibrating mixing frame, a transmission cylinder, and a guide shaft. The vibrating mixing frame and the rotary cylinder are slidably connected, and a spring is installed between them. The transmission cylinder and the rotary cylinder are rotatably connected. The beneficial effects of this invention are: through the deep coupling and sequential coordination of multiple movements such as swinging, vibration, stirring, turning, and internal agitation, a five-in-one three-dimensional dispersion system is constructed, integrating station switching, variable amplitude swinging, multi-level vibration, forward and reverse stirring, and lateral turbulence.

This utility model relates to the field of water sprinkler truck technology, and more particularly to a water sprinkler system and a mining water sprinkler truck. The water sprinkler system includes a water tank, a water sprinkler assembly, a centrifugal pump, and a hydraulic control assembly. The water tank is mounted on the mining water sprinkler truck. The water sprinkler assembly is connected to the water tank via a pipeline assembly and includes at least two nozzles located at the rear of the mining water sprinkler truck. The centrifugal pump is connected to the pipeline assembly. The hydraulic control assembly includes a main control valve group, a plunger motor, and an electromagnetic butterfly valve group. The main control valve group is connected to both the electromagnetic butterfly valve group and the plunger motor. The electromagnetic butterfly valve group is located on the pipeline assembly. The main control valve group controls the flow of hydraulic oil into the plunger motor and / or the electromagnetic butterfly valve group. The electromagnetic butterfly valve group controls the on / off state of the pipeline assembly. The plunger motor drives the centrifugal pump to control the water pressure in the pipeline assembly. This application enables the water sprinkler system to be applied to multi-powered mining water sprinkler trucks by connecting the plunger motor to the output of a generator in the power system.

The utility model belongs to butterfly valve technical field, and disclose a kind of wear-resistant corrosion-resistant butterfly valve, including valve body and the valve stem of movable installation in the inside top of valve body, the sidewall of valve stem is fixed with valve plate, and the sidewall of valve stem is equipped with wear ring, the corresponding side of wear ring and valve plate is flush, the both sides of valve plate are all contacted with the ceramic plate of round, and the surface of ceramic plate and valve plate is all annular shape distribution and is equipped with four positioning holes, and the positioning screw is arranged between the corresponding positioning hole, the tail portion of positioning screw is screwed with nut, and nut is contacted with the side of corresponding ceramic plate, the bottom of valve body is equipped with reinforcing assembly. By the above scheme, the problem that although the existing equipment has higher wear resistance to reduce the wear of valve plate in use, but the connection of valve plate and wear-resistant structure is prone to loosen due to corrosion, leading to poor internal sealing performance.

This utility model provides a modular tooling fixture mechanism for machining triple eccentric butterfly valve bodies, belonging to the technical field of fixture mechanisms. This modular tooling fixture mechanism for machining triple eccentric butterfly valve bodies includes a floating clamping module and a quick-change flange positioning base plate. The floating clamping module is disposed above the quick-change flange positioning base plate and is used to float and clamp the triple eccentric butterfly valve body placed on the quick-change flange positioning base plate. The quick-change flange positioning base plate is used to position the triple eccentric butterfly valve body and realize overall transfer between multiple processes. The floating clamping module includes a main frame and a pneumatic auxiliary locking assembly. The main frame adopts a three-way eccentric adjustment mechanism, which has a built-in adjustable wedge block, and the adjustable wedge block is connected to a screw. This solves the problems of eccentric deformation, cumulative positioning errors in multiple processes, and poor tooling versatility in the machining of triple eccentric butterfly valve bodies, eliminates repeated clamping errors, and improves accuracy and efficiency.

This invention discloses a centrifugal casting method for small butterfly valve castings. The casting cavity includes a box body with horizontal or vertical parting, and a gating ring core, a valve inner core, a valve outer core, and a rod core assembled inside the box body. The lower surface of the valve inner core is fitted with the inner core groove of the bottom plate, and a horizontal runner is provided on its upper surface. An inner cavity is provided between the outer surface of the valve outer core and the inner wall of the cylinder. The rod core is assembled in the branch pipe cavity of the support plate core. The gating ring core compacts the valve inner core and the valve outer core, with a gating point at the center and the top surface compacted by a pressure iron. After the box body is assembled, the two semicircular parts of the rod core fix the outer ends of the rod core, and the two semicircular parts of the support plate core fix the support plate core. This invention improves the process yield of butterfly valve castings and eliminates casting cracks.

The utility model discloses a coal gas pressure stabilizing control device for a blast furnace coal injection and pulverizing system. A waste gas pipeline is provided with a waste gas fan, a waste gas electric regulating valve, a waste gas flowmeter and a waste gas pressure transmitter; a coal mill inlet temperature thermal resistor and a coal mill inlet pressure transmitter are arranged on the outlet pipeline; a coal gas pressure transmitter, a coal gas flowmeter and a coal gas electric control valve are arranged on the coal gas pipeline, and an outlet temperature thermocouple and an outlet pressure transmitter are further arranged on the outlet pipeline; a waste gas carbon monoxide detector and a waste gas oxygen content detector are arranged on the waste gas pipeline; and a gas pneumatic quick switching valve, a gas electric blind plate valve, a gas electric butterfly valve and a carbon monoxide heat conduction type gas analyzer are arranged on the gas pipeline, and the number of the gas electric control valves is larger than or equal to two. According to the utility model, the gas regulating valve or the bypass pipeline three-valve group is additionally arranged, so that a monitoring instrument is perfected, and the gas flow and pressure are accurately controlled.

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.

The present invention relates to a non-closed butterfly valve capable of reducing conductance in a valve-closed state or in a small opening degree while avoiding conductance reduction in a valve-open state. The butterfly valve core (9) is provided with maximum outer diameter sections (91A, 91B) which face the inner peripheral surface of the flow path (30) in the valve closing position, and first chamfered sections (92A, 92B) which reduce the diameter of the butterfly valve core (9) from the maximum outer diameter sections (91A) toward the opposite side of the rotation direction (K direction) from the valve closing position to the valve opening position, the maximum outer diameter sections (91A, 91B) being provided in point symmetry about the axis (XL).

This invention provides a regulating device for a butterfly valve orifice plate for mixed gas in a coke oven basement, comprising a valve body, a continuous regulating mechanism for the butterfly valve, and a fixed throttling mechanism for the orifice plate. The inner cavity of the valve body serves as a gas flow channel, and the continuous regulating mechanism for the butterfly valve is installed within the channel perpendicular to the gas delivery direction. The continuous regulating mechanism for the butterfly valve is a structure that continuously and steplessly adjusts the opening and closing of the butterfly plate through a pneumatic actuator to achieve different gas flow rates. The fixed throttling mechanism for the orifice plate is an integrated throttling structure arranged within the channel along the gas delivery direction, and is sealed by a self-tightening lever clamping mechanism. The invention also provides a method for controlling gas flow using this device, which solves the problems of coarse regulation, the need to replace the orifice plate, and operational hazards associated with traditional orifice plate valves. It achieves continuous and precise regulation of gas flow without the need to replace the orifice plate, significantly improving the coke oven heating control level and system safety. It is particularly suitable for coke oven basement gas pipeline systems where space is limited and safety requirements are extremely high.

This utility model relates to the field of cleaning screen technology and discloses a zigzag-type air-separation material cleaning screen, including a screen body. A metal guide pipe is connected to the top left side of the screen body. PU corrugated pipes are connected to the left and right sides of the outer wall of the metal guide pipe. A feed corrugated pipe is provided on the outer wall of the PU corrugated pipe. An air outlet is opened on the top right side of the screen body. A baffle plate is fixedly connected to the top left side of the air outlet. A suction corrugated pipe is connected to the top of the air outlet. In this utility model, by increasing the flexible connection of the feed inlet of the original planar rotary cleaning screen and replacing the flexible connection with a steel wire PU corrugated pipe, the service life of the PU corrugated pipe is extended. A certain drop is maintained between the upper and lower material distribution plates. An adjusting butterfly valve is designed at the suction port to adjust the airflow. Optimal air separation effect is achieved by adjusting the airflow through the butterfly valve, thus meeting daily usage needs.

This utility model discloses a valve body inner wall polishing device for butterfly valve processing, including a base, a linkage component mounted on the base, a mounting bracket fixed on the linkage component, a drive motor fixed on the mounting bracket, and a quick-release mechanism at the output end of the drive motor. The quick-release mechanism includes a fixed sleeve and a rod. The fixed sleeve is fixed to the output end of the drive motor, the rod is inserted into the fixed sleeve, and a polishing head is fixed at its bottom end. The outer wall of the rod has a movable groove, and multiple sets of movable grooves are provided, each with a sliding locking block inside. A compression spring is connected between the inner wall of each locking block and the movable groove. A retaining ring is fixed inside the fixed sleeve, and a quick-release mechanism is provided on the outer wall of the fixed sleeve. The quick-release mechanism includes a sliding groove and an unlocking sleeve. The quick-release mechanism adopts an insertion structure between the rod and the fixed sleeve, combined with the locking block and compression spring in the movable groove, to achieve quick installation of the polishing head. This design greatly simplifies the installation process of the polishing head.