139 results about "Screw press" patented technology

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.

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 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 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.

The utility model discloses a hydraulic machine die which comprises a die bottom plate and die bodies, a plurality of die bodies are vertically and fixedly installed on the top face of the die bottom plate, the die bodies are arranged side by side, a plurality of brick body hole positions corresponding to porous checker brick hole positions in a one-to-one mode are vertically formed in the top face of each die body, and the brick body hole positions correspond to the porous checker brick hole positions in a one-to-one mode. And opening mold core assemblies used for pressing hole sites of the porous checker brick are integrally arranged in the mold main body. The utility model has the beneficial effects that the numerical control screw press ascends to drive the matched guide strip to vertically ascend along the guide groove in the brick making process, so that the core rod piece ascends along the hole site of the brick body and extends out from the top end; meanwhile, the numerical control screw press descends to drive the matched guide strip to vertically descend along the guide groove after brick making is completed, so that the mold core rod piece descends along the hole position of the brick body and is collected into the top end, and the brick pressing ejection use and brick discharging and returning storage modes of the mold core rod piece are simple and easy to realize.

The utility model relates to the technical field of press machines, and discloses a double-nut electric screw press machine which comprises a base, a working table and a connecting table which are fixedly installed on the base, a flywheel is fixedly installed on the connecting table, an outer spline is fixedly connected to the lower side of the flywheel, and an inner spline is fixedly connected to the lower side of the outer spline. A screw rod is fixedly connected to the lower side of the external spline, an upper nut is arranged on the outer side of the screw rod in a threaded mode, a lower nut is connected to the outer side of the screw rod in a threaded mode, mounting assemblies are arranged on the upper nut and the lower nut correspondingly, a sliding block is arranged on the outer side of the lower nut, and a guide rail is fixedly connected to the interior of the connecting table; a lubricating assembly is arranged on the upper side of the guide rail. In the working period, lubricating oil in the oil storage tank is fed to the oil collecting seat through the connecting pipe under the regulation and control of the electromagnetic valve, and then is sprayed to the guide rail through the nozzle below the oil collecting seat, so that the sliding block is lubricated in a sliding manner, friction and abrasion are reduced, and smooth and accurate operation of equipment is ensured.

The present disclosure describes embodiments of a twin-screw press for extracting vegetable oils, and a process for extracting vegetable oils and / or seeds. Particularly, the twin-screw press provides a reduction in machine cost and maintenance due to low operating torque requirements and allows an improved operation with the oil extraction being greater than the oil loss. This is a consequence of allowing lower processing temperatures and pressures due to the geometry of the screw and the gap that it has with the draining element of the press cage. This also permits reducing the possibility of material jamming or co-rotation of the cake in the press.

The utility model discloses a kind of kitchen waste treatment systems, including sorting device, solid-liquid separation device, wastewater treatment module, solid bunker, crusher, screw press, buffer storehouse, fermentation bin and discharge device;The discharge port of sorting device is communicated with the feed inlet of solid-liquid separation device, the liquid discharge port of solid-liquid separation device is communicated with the water inlet of wastewater treatment module, the solid discharge port of solid-liquid separation device is communicated with solid bunker, and the material stored in solid bunker is crushed by crusher, enters buffer storehouse after being treated by screw press and is temporarily stored, and the liquid outlet of crusher and screw press is communicated with the water inlet of wastewater treatment module;After using the system to treat kitchen waste, due to the air after heating used by fermentation bin provides hot air for kitchen waste in bin, so that the moisture content of fermentation product is reduced to below 40%, and can be used as usable raw material of resource.

The invention relates to the technical field of material dehydration, and discloses a spiral squeezing dehydrator which comprises a bottom plate, a protective shell, a driving motor, a filter cartridge and a sliding rod. In the spiral squeezing dehydrator, the filter cartridge is pressed along a mounting groove, a clamping block in a sleeve and a second table body are automatically released from a clamping state, and the filter cartridge is popped out along the mounting groove under the pushing of a pressure spring; a threaded rod rotates to push a brush ring to reciprocate along the outer wall of the filter cylinder, drainage holes formed in the filter cylinder and an extrusion cylinder are automatically cleaned, a second spiral blade rotates to automatically feed materials in a discharging hopper into a vertical cylinder, and a first spiral blade rotates to automatically input the materials into the extrusion cylinder; the distance between the extrusion blades and the extrusion barrel is adjusted through the electric push rod, the hydraulic cylinder is matched to control the distance between the blocking block and the slag discharging ring, the material extrusion force is jointly adjusted, the situation that the device is damaged due to too large extrusion force or materials are not extruded thoroughly due to too small extrusion force is avoided, and the material dehydration effect is improved.

The invention relates to a waste treatment method for veterinarians, which comprises the steps of material pretreatment and feeding, alkali liquor preparation and addition, hydrolysis reaction, cooling and discharging, and resourceful treatment, cleaning and maintenance of products. The waste treatment equipment for the veterinarians comprises a crusher, a weighing system, a conveying system, a reaction kettle, a cooling system, a temporary storage tank, a screw press and an evaporation and concentration system.According to the waste treatment equipment for the veterinarians and the treatment method, by means of crushing and self-bearing feeding, the hydrolysis reaction is faster and more thorough, alkali and energy are saved, and the waste treatment efficiency is improved. The heat exchanger is adopted for heat recovery, the heating energy consumption is greatly reduced, the purposes of energy conservation and environmental protection are achieved, closed reaction is adopted, and the tail gas washing tower is arranged at the tail, so that no peculiar smell or harmful gas is emitted in the whole treatment process, the working environment is improved, and the environmental protection effect is improved.

The utility model relates to the field of powder metallurgy, in particular to a powder metallurgy screw pressing device facilitating material taking, which comprises a powder metallurgy pressing machine body, a main body for powder metallurgy, a metallurgy pressing die opening and a powder metallurgy pressing die opening arranged on the surface of the powder metallurgy pressing machine body and used for being filled with metallurgy powder. The powder metallurgy screw pressing device is provided with the metallurgy pressing die opening, the powder pushing plate, the extending frame, the second telescopic air cylinder, the material taking plate and the material taking box, when the powder metallurgy screw pressing device is used, powder enters the metallurgy pressing die opening, is pressed by the screw and then is ejected out through the telescopic ejection plate, and at the moment, the powder pushing plate slides on the surface of the powder metallurgy pressing device body. The material taking plates located on the two sides of the powder pushing plate can sense the position of a current product subjected to powder metallurgy through an infrared sensor, the product is clamped through a second telescopic air cylinder and the material taking plates after positioning, and then the powder pushing plate continues to push metallurgical powder on the surface of the powder metallurgy pressing machine body and the product into a material taking box together.

According to the core part steel wire winding combined light-weight structure of the ultra-large screw press, each memorial archway of a double-memorial-archway steel wire winding machine body is formed by splicing nine blocks, and the double-memorial-archway steel wire winding machine bodies are fixed by applying pre-tightening force through super nuts to form the whole machine body; the upper cross beam part, the movable cross beam part and the lower cross beam part are all formed by splicing four blocks and then winding and combining the four blocks with ultrahigh-strength steel wires made of 65Mn and other materials with the yield strength of about 2000MPa, and the weight and the size of each block are only about one fourth of those of an original overall structure; in order to solve the manufacturing problem of core parts of the ultra-large screw press with the maximum cold striking force reaching tens of thousands of tons, the invention effectively solves the problem that the weight of a single part of the ultra-large screw press is hundreds of tons by winding and combining ultra-high-strength 65Mn steel wires with the yield strength reaching about 2000MPa after the ultra-large screw press is disassembled; the manufacturing and transportation difficulty of the ZG20SiMn material casting with the yield strength of about 300-350 MPa and even thousands of tons is lowered, and light weight is achieved.

The utility model discloses a juicing mechanism of a Chinese wolfberry raw squeezing all-in-one machine, which comprises a control end, a driving part, a screw squeezer, a blanking hopper, an impurity removal box, a material control valve and a tank body, the screw squeezer drives an internal screw rod to rotate through the driving part for squeezing, and the blanking hopper is arranged at the top of the screw squeezer. An impurity removal box and a material control valve are arranged at the top of the discharging hopper, a tank body is arranged at the discharging end of the screw press, and a press cage located on the outer side of a screw press rod is arranged in the screw press. According to the juicing mechanism of the Chinese wolfberry raw squeezing all-in-one machine, the pressure sensor monitors the fruit residue pressure at the residue discharging opening and transmits an electric signal to the control end, the control end controls rotation of the stepping motor by setting a pressure interval value, the stepping motor actively discharges residues through the discharging component, and therefore accurate pressure control is achieved in the low-pressure squeezing process; the product quality is improved, and the problem of slag discharge blockage is avoided.

This invention provides a technology for efficiently discharging treated materials from a screw press dewatering machine used in a waste treatment system. [Solution] The dewatering device 60 comprises an inlet 62 into which crushed pieces F of the material to be processed flow in, a cylindrical screen section 66 whose upstream end is connected to the inlet 62, and screw blades 67B arranged inside the inlet 62 and the screen section 66, extending in the direction of the central axis of the screen section 66. The outer peripheral edge of the screw blades 67B has a notched portion 67C cut out from the upstream end F1 of the screen section 66 toward the downstream end F2.

A vegetal concrete masonry unit and method and system for manufacturing thereof are disclosed. The masonry unit comprises treated crop residues (e.g., paddy straw, wheat straw, bagasse), a binder of hydrated lime, ground granulated blast furnace slag (GGBFS), and low-content alkali activator (2.5-20% by mass), and aggregates in a mass ratio of 1:0.1:1.5 to 1:5:5, achieving compressive strengths of 2-20 MPa and densities of 950-1900 kg / m3. The method involves alkali-treating residues at 0.1-10M NaOH for 15-1500 minutes, passing through a screw press, mixing with binder and aggregates to form C-A-S-H and N-A-S-H gels, and high-pressure molding (2-10 MPa). The system includes silos, a retention tank / screw press, pan mixer, and hydraulic press. This sustainable bio-composite utilizes agricultural / industrial wastes, reduces emissions by 80%, is energy efficient, enhances compatibility and mechanical performance, and provides thermal insulation for eco-friendly building blocks and panels.

The utility model relates to the technical field of alternating current contactors, and discloses an alternating current contactor which comprises an alternating current contactor body, a movable limiting piece and a positioning piece, the alternating current contactor body is provided with a wiring port, and a fastening screw is screwed in the wiring port. The movable limiting piece comprises sleeve plates capable of vertically limiting the cap ends of the fastening screws and an adjusting piece, each wiring port corresponds to one sleeve plate, and all the sleeve plates in the same row can move synchronously through the adjusting piece; according to the utility model, after the fastening screw presses the wire harness, the sleeve plate is sleeved in the direction perpendicular to the fastening screw through the adjusting piece to limit the cap end of the fastening screw, so that the possibility of loosening of the fastening screw caused by vibration, external force pulling and the like is reduced, and the stability of wire harness connection is remarkably improved; and the screwing handle at the top end of the connecting rod is rotated to drive the gear to rotate, so that the rack and the connecting strip move to drive all sleeve plates in the same row to move synchronously, and the operation is simple and convenient.