214 results about "Screw press" patented technology

The invention relates to a screw press for separating filtrate from a feed material. It is characterised in that a sensor arrangement comprising a sensor for measuring the filtrate content is arranged in the discharge area, the feed material flowing towards and / or around the sensor. This allows simple, prompt, and accurate measurement of the filtrate content.

The key groove milling tool is provided with a V-shaped block, a check block is installed at one end of a V-shaped sinking groove of the V-shaped block, and a flat position positioning block is installed at the other end of the V-shaped sinking groove of the V-shaped block; axial positioning screws are rotationally mounted on the stop blocks, and the axial positioning screws abut against the shaft end faces of the shaft parts to be used for axial positioning of the shaft parts with different lengths; the upper end face of the flat position positioning block is provided with a flat position positioning inclined face, the inclination angle alpha of the flat position positioning inclined face is equal to the included angle between a shaft part key groove and a flat position, and the flat position positioning inclined face makes contact with and is attached to the flat position of the shaft part. The V-shaped block is provided with a pressing plate, and the pressing plate downwards presses the shaft part and tightly presses and fixes the shaft part on the V-shaped block. The technical problem that the machining efficiency is low when a three-axis machining center is used for machining a shaft key groove and a milling key groove with the angle relation between the flat position and the shaft key groove is solved, the structure is simple and compact, economical and practical, clamping is convenient, the machining difficulty is reduced, the machining efficiency is improved, and universality is high.

The invention relates to the field of turning equipment, and discloses oil press pressing screw outer spiral machining equipment which comprises a rack base, an embedded stabilizing mechanism is located on an operation sliding table, and the embedded stabilizing mechanism is matched with an external rotary drum and a distribution guide rail of a guide roller shaft to be used for conducting circumferential clamping along the interior of a pressing screw blank. The linear traction mechanism is located on the center guide groove table, and the synchronous switching mechanism is located on the rack base and used for fixing thread groove cutting tools and synchronously switching the tools in cooperation with the side sliding table, the regulation and control screw rod, the linear opposite grooves of the center guide groove table and the U-shaped guide grooves of the linkage guide groove table. Synchronous clamping, fixing and rotating of two sets of pressing screw blanks are achieved through a concentric clamping mechanism and an opposite output mechanism which are symmetrically designed, double-station external spiral cutting is completed at a time in cooperation with a synchronous switching mechanism driven by linear traction, a mechanical structure that a center gear is in linkage with upper and lower opposite racks is adopted, strict synchronous movement of the clamping mechanisms on the two sides is ensured, and the working efficiency is improved. Machining errors caused by single-side stress are avoided, and meanwhile the power input requirement is simplified.

The invention relates to the technical field of kitchen environment-friendly treatment, in particular to an environment-friendly kitchen waste solid-liquid separation treatment device which comprises a screw press used for conducting solid-liquid separation on kitchen waste, a material blocking cover is arranged at the discharging end of a screw press body, and the bottom of the material blocking cover communicates with a material collecting cover. A fixing plate is mounted on the screw press body, and the fixing plate is used for fixing the material collecting cover; a discharging plate is fixedly mounted at the bottom of the material collecting cover; according to the screw press disclosed by the invention, the material blocking cover is arranged at the discharging end of the screw press body, so that extruded dry kitchen waste is ensured to fall onto the discharging plate through the material blocking cover and the material collecting cover; and therefore, the extruded dry kitchen waste can uniformly fall into the material receiving barrel through the multiple discharging holes, meanwhile, it is guaranteed that the dry kitchen waste falls into the material receiving barrel to be in a tiled state, and the effective volume utilization rate of the interior of the material receiving barrel is further increased.

The invention relates to the technical field of high-rise building elevators, and provides a high-rise elevator emergency air pressure slow descending device which comprises an elevator car, first wedge-shaped blocks fixed to the two sides of the elevator car, a plurality of slow descending mechanisms embedded in the two sides of an elevator shaft in a gradient mode and an air pressure bottom sinking mechanism arranged at the bottom of the elevator shaft. The multi-layer buffering mechanism combining non-Newtonian fluid damping, pneumatic pressurization and elastic supporting has the synergistic effect, the shear thickening effect of non-Newtonian fluid in the box body is activated through the stirring components (the spiral pressing pieces and the stirring blades), the fluid viscosity is greatly improved instantly when the lift car descends suddenly, dynamic damping force is formed, and the dynamic damping effect is achieved. The first air cylinder is used for compressing air to drive the air bag to expand, the reverse thrust assembly (the second air cylinder and the lower pressing plate) is combined to achieve conversion from air pressure energy to mechanical energy, secondary buffering is formed, non-linear and self-adaptive energy absorption is achieved through coupling of fluid mechanics (non-Newtonian fluid) and gas dynamics, and the device is particularly suitable for high-speed falling scenes.

This invention provides a sludge dewatering system, including a screw press dewatering machine, a sludge pump, a dosing pump, a stirrer, and a controller. The inlet of the screw press dewatering machine is connected to the outlets of the sludge pump and the dosing pump via pipelines. The outlet of the sludge pump is equipped with a sludge flow meter, the outlet of the dosing pump is equipped with a dosing flow meter, and the filtrate outlet of the screw press dewatering machine is equipped with a filtrate flow meter. The controller is electrically connected to the sludge pump, the dosing pump, the stirrer, the sludge flow meter, the dosing flow meter, and the filtrate flow meter. The screw press dewatering machine has a screw pitch of 3-4 mm, a screw shaft diameter of 40-55 mm, a screw shaft compression ratio of 2-3.5, a screw shaft rotation speed of 3-7 rpm, and an outlet pressure of 0.02-0.04 MPa. The sludge dewatering system of the present invention can adjust the moisture content of the dewatered sludge to between 85% and 95%, provided that the sludge feed rate is stable at 400-680 kg·ds / h and the sludge feed moisture content is between 99% and 96%.

A faucet assembly and a locking device for securing a faucet to a mounting table to which the faucet assembly is mounted. The faucet assembly includes a spout that discharges fluid therefrom. The base is mounted on the first surface of the mounting table and between the nozzle and the mounting table. The base is sized and shaped such that the base cannot pass through the channel of the mounting table when mounted on the first surface. The base is connected with a mounting handle, and the mounting handle is inserted into the channel. The mounting handle has a circular outer surface with an external thread thereon. The nut includes a tube section having an inner wall with internal threads. The inner wall defines a channel sized to receive a mounting shank such that the internal thread of the inner wall engages the external thread. A cantilever including a threaded through-hole extends from an outer wall of the tube section. An externally threaded screw is screwed through the threaded through hole until the distal end of the screw presses against the second surface of the mounting table and biases the internal thread of the tube section against the external thread of the mounting shank, thereby securing the faucet assembly to the mounting table.

Arrangement (1) for pasteurizing and subsequently separating solids from a slurry containing solid and liquid components, comprising: • a heating device (2) for heating the slurry containing solid and liquid components, • a storage container (5) for the slurry upstream of the heating device (2), namely a biogas plant, • a pasteurization device (3) downstream of the heating device (2) for pasteurizing the slurry containing solid and liquid components, • a pressing device (4), preferably a screw press separator, further downstream for separating the solids from the previously pasteurized slurry, • a combined heat and power plant (7) that can be operated by burning a gas phase (6), preferably biogas, escaping from the slurry stored in the storage container (5), wherein the heating device (2) for heating the slurry is designed to utilize at least part of the waste heat from the combined heat and power plant (7).and• a gassing vessel (8) for directly heating the slurry contained therein by direct supply and / or dispersion of a waste heat stream (13), namely a hot exhaust gas stream, from the combined heat and power plant (7) into the slurry.

The utility model discloses a ceramic conduction slurry hole filling processing device, including seal cover, the even several air holes of seal cover top surface are equipped with, the both sides of seal cover top surface near edge all have the bonding of clamping block, the movable joint of seal cover top surface has the bottom plate, the vacuum chuck of being equipped with in the bottom plate inside the air hole top, the both sides of bottom plate surface all are fixed with the mounting of connecting plate, the one side of connecting plate surface is located the fixed mounting of lantern ring in the position of screw hole, the both sides of lantern ring and connecting plate all are installed with the screw press bar of penetrating, the gasket of movable installation of screw press bar other end, the fixed mounting of holding lever of connecting plate top surface, this device is equipped with the vacuum chuck of soft texture in the air hole top, can effectively solve the problem of poor adsorption effect caused by the uneven surface of ceramic base.

This invention relates to the field of water pollution technology, specifically to a screw press sludge dewatering device for wastewater treatment. It includes a dewatering chamber, and further comprises: a drive shaft rotatably connected between the sludge inlet chamber and the sludge discharge hood; a variable-pitch screw shaft mounted on the drive shaft and located within both the sludge inlet chamber and the dewatering chamber; a sleeve movably fitted onto the drive shaft, with a back pressure plate fixed to its outer wall within the sludge discharge hood, the back pressure plate having a plurality of sludge discharge holes evenly spaced circumferentially; and a fixing ring fixed to the drive shaft and located outside the back pressure plate, with a plug corresponding to each sludge discharge hole fixed on the side of the fixing ring closest to the back pressure plate. This invention, by configuring the sleeve, back pressure plate, sludge discharge holes, fixing ring, plugs, and axial movement mechanism, allows switching between two sludge discharge modes according to sludge characteristics, achieving efficient adaptability of the equipment to different operating conditions.

The invention discloses an oil press for refining rice bran oil. The oil press comprises a stirring barrel, a stirring assembly and a stirring driving device, wherein the stirring barrel is used for containing rice bran mixed pulp to be subjected to enzymolysis; the stirring assembly is arranged in the stirring barrel and is connected with a heating device; the rice bran pulp mixing device comprises a stirring assembly, a stirring barrel arranged in the stirring assembly, a heat conduction oil circulating cavity arranged in the stirring assembly and used for circularly conveying heat conduction oil, a jacket arranged on the outer side of the stirring barrel and used for circularly conveying temperature control liquid, a controller, a first temperature detection device arranged in the stirring barrel and used for detecting the rice bran pulp mixing temperature, and a second temperature detection device arranged in the stirring barrel and used for detecting the rice bran pulp mixing temperature, the controller adjusts the temperature of the stirring assembly based on the comparison result of the rice bran pulp mixing temperature detected by the first temperature detection device and the rice bran pulp mixing set temperature. According to the oil press for refining rice bran oil, uniform heating of the stirring barrel is achieved, and the temperature difference of rice bran pulp mixing in the stirring barrel is reduced.

The utility model relates to the technical field of vibration control, in particular to a vibration reduction foundation of a screw press. The device comprises a foundation and a foundation block, the foundation block is embedded in the foundation, the device further comprises an anti-torsion buffering device and a back pressure device, and the anti-torsion buffering device comprises a limiting baffle and an anti-torsion elastic buffering component; the back pressure device comprises a back pressure plate and a foundation bolt, a buffer gap in the horizontal direction is reserved between the assembly through hole and the foundation bolt, the foundation bolt is sequentially matched with the assembly through hole and the installation through hole from bottom to top, and the press machine base and the back pressure plate are fixed to the foundation block. The vibration reduction foundation of the screw press is simple in structure, long in service life and capable of optimizing stress in the working process of equipment and preventing the equipment from being damaged, thereby effectively improving the utilization rate of the equipment and the machining precision of the equipment, being beneficial to improving economic benefits and being suitable for popularization and application. The method can be suitable for basic vibration control of various friction type screw presses and electric direct-drive screw presses, and the application prospect is very wide.

A method and system for preparing forged structural parts from TC6 material are disclosed. First, TC6 bar stock is sawn, and the β-phase transformation temperature (Tβ) of the sawn TC6 bar billet is measured. Then, the billet is heated to a high temperature (Tβ-40) ±10℃ in an electric furnace and held to obtain a pre-treated TC6 bar billet. Next, the pre-treated TC6 bar billet undergoes a series of processes in sequence: small-end aggregation, flat forging, bending, flat forging, large-end aggregation, flat forging, large-end forming, flat forging, and intermediate billet treatment to obtain a secondary-treated TC6 bar billet. This secondary-treated TC6 bar billet is then heated to a high temperature (Tβ-40) ±10℃ in an electric furnace and held to obtain a billet to be forged. Finally, it is forged using an electric screw press, followed by heat treatment, isothermal annealing, and physicochemical testing to obtain the machined TC6 material structural part. Finally, the parts are inspected, and qualified parts are stored in the warehouse. This process yields qualified structural parts.

The invention relates to the technical field of sludge dewatering, and discloses an efficient sludge dewatering screw press which comprises a first fixing frame, a driving machine is fixedly connected to the top of the first fixing frame, a machine box is fixedly connected to the side wall of the driving machine, and a second fixing frame is fixedly connected to the inner wall of the machine box. A compression assembly is arranged in the equipment, a sliding blocking block is located in a gap of a spiral fan blade before being used, when the spiral fan blade rotates and drives sludge to move towards a discharging box, the spiral fan blade drives a sliding block to slide along the inner wall of a sliding rail through the sliding blocking block at the same time, and in the process, the sliding block can slide along the inner wall of the sliding rail. As the sliding blocking block is always inserted into the inner wall of the sliding rail, and a single position gap of the sliding rail is reduced, the flowing speed of sludge is slowed down, and through the application of the components, the situation that the squeezing effect of equipment is influenced by reverse flowing caused by the reduction of the distance between the sliding rails is effectively prevented.

This application provides a device for repeated cold pressing of camellia fruit, relating to the field of camellia fruit cold pressing technology. It includes a first support frame, with a cold pressing mechanism mounted on top of the first support frame. The cold pressing mechanism includes a screw press connected to a feeding hopper. The screw press has a liquid outlet and a solid outlet. A crushing box is located on one side of the first support frame at the solid outlet of the screw press. The crushing box has a crushing structure, and a collection box is connected to the bottom of the crushing box. The collection box is connected to an auger conveyor, which is connected to a discharge pipe, the bottom end of which extends into the feeding hopper. Through the crushing box, solid fibers discharged from the solid outlet of the cold pressing mechanism are crushed by the crushing structure and then conveyed to the feeding hopper via the auger conveyor and discharge pipe. The cold pressing mechanism automatically and repeatedly cold presses the solid fiber powder, eliminating the need for manual handling and feeding, thus reducing the labor intensity of workers.

The present invention discloses an oil pressing device and method capable of removing crude oil powder residue, aiming to solve the problems of long operation time and low efficiency of removing residue from crude oil obtained by pressing. The invention comprises a screw press and a crude oil remover. The crude oil remover comprises a centrifugal filter unit and a centrifugal sedimentation unit. The centrifugal filter unit comprises a fixed cylinder and a centrifugal cylinder. The centrifugal cylinder is rotatably mounted in the fixed cylinder. A plurality of oil outlet holes are densely distributed on the lower side wall of the centrifugal cylinder. The fixed cylinder is connected to an oil pump. The centrifugal sedimentation unit comprises a rotating shaft and a centrifugal pipe. The centrifugal pipe comprises a straight section and a frustum section. A spiral blade is mounted on the rotating shaft. The outer edge of the spiral blade is adapted to the inner wall of the centrifugal pipe. An oil inlet hole is provided at a position corresponding to the straight section in the rotating shaft. One end of the oil inlet hole is connected to the oil outlet end of the oil pump. The other end of the oil inlet hole is connected to a position on the outer wall of the rotating shaft that is biased towards the frustum section. A slag outlet hole is provided at the end of the frustum section away from the straight section. An oil outlet hole is provided at the end of the straight section away from the frustum section.

A fixed-axis planetary gear driven slider return type multi-screw super-large screw press, including an upper body in the body, characterized in that: the upper body is connected to the lower part of the main shaft through a force amplification mechanism, and the lower part of the main shaft is installed on the upper body; the upper part of the main shaft is installed with a slider return mechanism, a flywheel, and a friction clutch in sequence; the slider return mechanism is close to the upper body and is located at the lower side of the main shaft, the friction clutch is located at the upper side of the main shaft, and the flywheel is located in the middle of the main shaft; the flywheel and the friction clutch form a whole in structure; the friction clutch and the slider return mechanism are both connected to the hydraulic pipeline system; the present invention has the advantages of small screw diameter, easy manufacturing, high load-bearing capacity, strong anti-eccentric load ability, large working surface, high efficiency, good reliability, high energy utilization, and convenient replacement and maintenance of clutch friction materials.

The invention provides a communication electric power iron tower structure with a digging warning function, and relates to the technical field of iron tower equipment, the communication electric power iron tower structure comprises an iron tower main body, the bottom of the iron tower main body is provided with two detector bodies, the two detector bodies are symmetrically distributed, and the detector bodies are buried underground; the detector body is provided with two positioning frames, a first gear and two toothed plates are in meshing transmission, an adjusting rod can be driven to slide along a limiting sliding groove, the two positioning frames can be clamped with a first limiting groove and a second limiting groove at the same time, and in the whole assembling process, due to the fact that tools are not needed, the assembling efficiency is improved. The connecting structure is simple, the assembling process is flexible and convenient, and the problems that when an existing communication electric power iron tower structure with the digging warning function is used, a soil detector continues a traditional screw pressing connection fixing technology all the time, the assembling and disassembling processes are troublesome, and the construction cost is high are solved. And long time is consumed in the construction process of the iron tower.

The invention relates to the field of automobile part machining equipment, in particular to a screw press-fitting device for automobile glass lifter production, and aims to solve the problems that an existing press-fitting device is not continuous enough in feeding of a tool tray, so that an operator can take and supplement the tool tray through a large amount of walking due to the conveying interval of the tool tray, and the labor intensity of the operator is reduced. The device comprises a fixed table and a tool tray, and a conveying mechanism is installed at one end of the top of the fixed table; the changing and conveying mechanism is used for conveying the tool trays; the plate conveying mechanism is used for storing the tool trays and conveying the tool trays to the position of the replacing and conveying mechanism. The screw press-fitting device has the effects that multiple tool trays are conveyed through the plate conveying mechanism, after height adjustment of the tool trays is achieved through the replacing and conveying mechanism, workpieces are installed on the tops of the tool trays by workers, and after screw press-fitting is conducted through the press-fitting mechanism, the workpieces are conveyed to the next procedure through the conveying mechanism.

The utility model discloses automatic blanking screw assembling equipment, which comprises a feeding device, a screw assembling device, a screw feeding device and a blanking device, the feeding device comprises a fixed table and a first transfer component used for driving the fixed table to move, and the fixed table is used for fixing a workpiece on which a screw is screwed; the screw assembling device comprises a clamping nozzle assembly, a screw pressing assembly matched with the clamping nozzle assembly and a second transferring assembly used for driving the clamping nozzle assembly and the pressing assembly to move synchronously, the clamping nozzle assembly is provided with a material cavity used for positioning the screws, and the screw pressing assembly is used for driving the screws in the material cavity to move and move out of the material cavity to be matched with the workpieces; the screw feeding device comprises a feeding assembly used for arranging screws in order and a suction assembly, and the suction assembly is used for conveying the screws on the feeding assembly to a material cavity of the clamping nozzle assembly. The discharging device comprises a discharging clamping jaw and a third transferring assembly driving the discharging clamping jaw to move, and the discharging clamping jaw is used for clamping the workpieces.

This invention provides a high-precision gear transmission backlash elimination mechanism, comprising a fixed gear and a movable gear. The fixed gear is integrally machined onto the gear shaft, and a raised arc-shaped pad is provided on its end face near the movable gear. The movable gear is coaxial with the fixed gear and has the same tooth profile. A coaxial arc-shaped groove is provided on the movable gear at a corresponding position to the arc-shaped pad. A wedge block is inserted between the arc-shaped groove and the arc-shaped pad, causing an angular offset between the movable gear and the fixed gear. An adjusting screw mounting hole is provided on the end face of the movable gear near the arc-shaped groove adjacent to the wedge block. Screwing in the adjusting screw presses the wedge block in, eliminating backlash while preventing the wedge block from loosening. As the gear wears down over time, increasing backlash, it can be eliminated by screwing in the adjusting screw. The gear transmission system using this backlash elimination mechanism has no significant change in size and features high speed resistance, heavy impact load resistance, and high precision.

The utility model belongs to the technical field of rapeseed oil production, and particularly relates to a rapeseed oil squeezing and extracting device which comprises two supporting plates, a barrel is fixedly arranged between the two supporting plates, a squeezing screw is arranged in the barrel, a feeding shell communicated with the barrel is fixedly arranged on the outer side of the barrel, and a pretreatment assembly is arranged in the feeding shell. The pretreatment assembly comprises a heat conduction pipe connected with the inner wall of the feeding shell, a mounting groove is formed in the center of the top of the heat conduction pipe, a heating pipe is arranged in the mounting groove, a conical material distribution disc is connected to the top of the heat conduction pipe, material guide holes are formed in the heat conduction pipe in an array mode, and a telescopic assembly is arranged at the bottom of the heat conduction pipe and provided with a plurality of connecting rods. And each connecting rod is provided with a grinding roller located in the corresponding material guide hole. According to the device, through heating and grinding pretreatment on the rapeseeds, cell structures of the rapeseeds are easier to break, grease is easier to squeeze out, and the oil yield is remarkably improved.

The utility model relates to the technical field of press protection, and discloses an electric screw press protection device which comprises a rack, a lower die is fixedly installed at the bottom of the rack, angle iron is fixedly installed at the top of the lower die, a proximity switch is fixedly installed on the side face of the angle iron, and optical gratings are fixedly installed on the front side and the rear side of the rack. And switch boxes are fixedly mounted on the left side and the right side of the front side of the rack. According to the protection device for the electric screw press, after operators exit from the detection range of the grating, the equipment can be started only after two operators press the start buttons at the same time, and when the operators are within the detection range of the grating, the start buttons are pressed at the two sides at the same time, and the equipment cannot be started; when hands or other body parts of a worker enter a dangerous area, the grating can detect the dangerous area and feed back a signal to the control box in time to stop operation of equipment, the proximity sensor is installed on the top of the lower die, the equipment cannot be started when a workpiece is not taken away, and safety of operators is guaranteed.

The utility model discloses a sludge dewatering device of a stacked screw machine, which comprises a water receiving tank, a dewatering tank is fixedly mounted at the top end of the water receiving tank, the dewatering tank is inclined, the bottom of the dewatering tank is hollow, a shaft lever is rotatably connected inside the dewatering tank through a bearing, spiral blades with different gaps are fixed on the surface of the shaft lever, and the spiral blades are fixed on the surface of the shaft lever. Lamination sheets are installed inside the dewatering tank and located outside the spiral blades, and a sludge discharging opening is formed in the position, close to the spiral blades, of the side wall of the top end of the dewatering tank. According to the sludge dewatering device, the water receiving tank, the dewatering tank, the shaft rod, the spiral blade, the lamination, the L-shaped plate, the motor and the sludge blocking assembly are arranged, the motor drives the shaft rod and the spiral blade to rotate in the lamination, water in sludge is squeezed out through the spiral blade, and when the sludge is squeezed out of the sludge discharging opening of the dewatering tank, the sludge blocking assembly plays a role in squeezing; according to the device, the extrusion force of the mud guard can be quickly adjusted according to the drying degree of the extruded sludge, so that the machine adjusting efficiency is improved.

The utility model relates to a flywheel radial positioning mechanism for a direct-drive electric screw press, and belongs to the field of screw presses, the flywheel radial positioning mechanism is connected between an upper cross beam and a screw, the upper end of the screw penetrates through the upper cross beam to be connected with a flywheel, the flywheel radial positioning mechanism comprises a rotating bearing, and the rotating bearing is connected between the screw and the upper cross beam; the fixed seat is connected to the lower end surface of the upper cross beam; the lower shaft sleeve is positioned below the rotating bearing and is connected between the fixed seat and the screw rod; the upper positioning assembly is located above the rotating bearing and connected between the upper cross beam and a hub of the flywheel, the upper shaft sleeve, the lower shaft sleeve and the rotating bearing between the upper shaft sleeve and the lower shaft sleeve are arranged, and compared with the rotating bearing, two-point positioning of the flywheel is achieved through positioning of the upper side and the lower side of the upper shaft sleeve and the lower shaft sleeve; radial swing of the flywheel caused by large inertia kinetic energy is reduced, meanwhile, the eccentric wear degree of the flywheel and the motor rotor is reduced, and the problems of debugging failure, machine damage and the like are avoided.

The invention relates to the technical field of press machines, and discloses an electric screw press which comprises a rack, a workbench is fixedly installed at the bottom of the interior of the rack, a base capable of being rotationally adjusted is installed at the top of the workbench, a protective surrounding plate is fixedly installed at the top of the base, and a lifting component is installed at the top of the rack. A pressing block is fixedly installed at the bottom of the lifting component, vertical plates are fixedly installed on the two sides of the bottom in the rack, a main transmission component is connected between the lower portion of the lifting component and the two vertical plates, the main transmission component is in transmission connection with the base, and a cover plate capable of being rotationally adjusted is installed at the top of the protective surrounding plate. An extrusion through opening vertically aligned with the pressing block is formed in the middle of the cover plate, and a baffle capable of being rotationally adjusted is installed in the protective surrounding plate. The electric screw press is provided with a splash-proof protection structure and a protection structure inclination automatic cleaning function, and the performance of the electric screw press can meet the use requirement.

The utility model provides a wall-mounted sound box, which comprises a sound box main body, a mounting bracket and a guarantee piece, the loudspeaker box main body comprises a shell and a surface cover, a mounting column is arranged in the shell, and a sealing cover screw hole is formed in the end part of the mounting column. The face cover covers the installation opening of the installation cavity in a sealing mode, a screw groove is formed in the position, corresponding to the end of the installation column, of the face cover, a locking through hole aligned with the sealing cover screw hole is formed in the middle of the screw groove, and an annular boss surrounding the locking through hole is arranged at the groove bottom of the screw groove. The shell and the face cover are fixedly installed in the mode that locking screws penetrate through the locking through holes and are screwed into the sealing cover screw holes, and the bottom ends of the heads of the locking screws tightly press the annular boss. The wall-mounted sound box is installed in a swinging mode through the installation support. The guarantee piece comprises guarantee hooks and a guarantee connecting piece, one guarantee hook is installed on the back of the loudspeaker box body, the other guarantee hook is installed on the wall face, the two ends of the guarantee connecting piece are connected with the two guarantee hooks respectively, and the installation safety degree of the loudspeaker box is improved.

This invention provides a helical pressure mechanism and a helical pressure device. The helical pressure mechanism includes: a primary screw, a push rod, and a power mechanism. The primary screw has a primary screw hole. The push rod is threaded into the primary screw hole. The power mechanism includes a flywheel and a clutch. The clutch can selectively connect to either the primary screw or the push rod. When the clutch is connected to the primary screw, the rotational force of the flywheel is transmitted to the primary screw. The threaded engagement force between the primary screw and the push rod causes the push rod to move in the direction of pressure application. When the clutch is connected to the push rod, the rotational force of the flywheel is transmitted to the push rod. The threaded engagement force between the push rod and the primary screw causes the push rod to move in the opposite direction of pressure application. During the reciprocating movement of the push rod to achieve the stamping operation, the flywheel maintains rotation in the same direction, thus allowing the small-power motor to continuously store energy and achieve high-power output.

Aqueous slurry which includes solid foreign matter and paper dust is pressed by means of a screw press, provided with a mesh having openings not less than 1.5 mm and not greater than 3 mm, to separate the aqueous slurry into the solid foreign matter and the paper dust, and liquid component passing through the mesh. Then, the liquid component is sieved by means of a sieve having openings not greater than 1 mm to separate from the liquid component the solid foreign matter and the paper dust.