47results about How to "Sieve evenly" patented technology

The invention belongs to vibrating machines, and particularly relates to a rotary vibrating screen. According to an existing rotary vibrating screen, when a screen mesh is used for sieving a material, the problem that the sieving is not uniform exists; aiming at the problem, the invention provides a rotary vibrating screen. The rotary vibrating screen comprises a material feeding hole, a dustproof cover, a screen frame, a clamp, a screen mesh, material discharging holes, a material returning plate, heavy bobs, a vibrating motor, springs, a pedestal and material baffle plates, wherein the material feeding hole is formed in the top of the dustproof cover; the screen frame is combined with the screen mesh to form a screen layer; the dustproof cover is connected with the screen layer by using the clamp; the material discharging holes are formed in the two sides of the screen layer and are mutually symmetrical; the material returning plate is arranged at the lower end of the screen mesh, and is funnel-shaped; the heavy bobs are arranged at the upper end and the lower end of the vibrating motor respectively, and are rigidly connected with the sieving components; the sieving parts are elastically connected with the vibrating motor and the pedestal by using springs; the material baffle plates are arranged at the positions, which approach the material discharging holes, of the screen mesh. The rotary vibrating screen is convenient and practical; the problem that the sieving of the material is not uniform can be solved quite well.

The invention relates to the technical field of cement waste, and discloses an efficient solid waste treatment device. The efficient solid waste treatment device comprises two vertical plates arranged correspondingly, wherein a crushing mechanism is mounted above one ends of the two vertical plates, an upper sieve plate and a lower sieve plate are arranged between the two vertical plates up and down in parallel, a receiving hopper is arranged at the bottom between the two vertical plates, and a slag receiving hopper is arranged between the two vertical plates and located under one end of the upper sieve plate and one end of the lower sieve plate, the middles of the rear surfaces of the upper sieve plate and the lower sieve plate are jointly connected with a reciprocating motion mechanism, and sweeping mechanisms are arranged in the positions, corresponding to the upper sieve plate and the lower sieve plate, of the inner sides of the vertical plates. When the crushed waste is screened, the waste can fall onto the screen plate to be more rapidly and uniformly dispersed, so that the screening efficiency of the screen plate on the waste is improved; and moreover, the screened impurities and metal substances can be classified, so that the solid waste treatment efficiency is further improved.

A sifter comprising: a receiver having a supply chamber; a sieve assembly having a sieving chamber coupled to the supply chamber; a rotator having a rotating shaft laterally arranged to pass through the supply chamber and the sieving chamber; a drum having a circular cross-section and having a larger diameter than the diameter of the rotating shaft, the drum being extended in at least space of the sieving chamber and arranged coaxially with the sieve; a cylindrical sieve located inside the sieving chamber and arranged coaxially with the rotating shaft; a stirring rotor located in an inner area of the sieving chamber inside the sieve comprising a rotating blade attached to the rotating shaft; an extraction member; and an outlet for discharging powder passing through the sieve from the inner area to the outer area.

The invention discloses a pneumatic screening device, which comprises a screening device, an air blower and an exhaust device. The air blower is connected with the screening device respectively via an air inlet pipe and an air outlet pipe, and one end of the air inlet pipe is connected with the exhaust device. The pneumatic screening device is capable of screening in a graded manner according to different mesh numbers of the material. A sampling sieve is connected with the air blower so that the material can be evenly and quickly screened. In the mean time, the arrangement of the exhaust device saves raw material and reduces costs. The pneumatic screening device is in a closed structure, dust-proof and low in noise so that the surrounding working environment cannot be affected.

The invention belongs to the field of screening devices, and provides an annular movement sieve. The annular movement sieve is mainly characterized in that: the conventional sieve is greatly improved, a longitudinal grid and a horizontal grid of the sieve are connected in a T shape; two ends of the horizontal grid are connected with a link plate of a link chain driving mechanism to form an annular sieve so as to realize annular movement operation; therefore, the material can be charged continuously and can be sieved uniformly, material blockage is reduced, the sieving efficiency and output are improved, energy consumption is reduced, soft impurities can be removed, and the annular movement sieve has obvious advantages.

A screening net adjusting and anti-blocking device comprises a feeding device, a breaking device, a supporting device, a screening device and an anti-blocking and adjusting device. Adjusting columns are arranged below screening columns, screening holes in the screening columns can be blocked when the adjusting columns ascend, and therefore the opening and closing number of the multiple screening holes can be adjusted in the screening process at any time. Due to the fact that the radii of the screening holes formed in the screening columns from top to bottom are gradually increased, the particle size of screened materials can be adjusted. The positions of the adjusting columns are decided by the particle size of the materials which need to be screened, the adjusting columns ascend to pass through leaking holes to arrive at the position above a screening plate and can push out the large-particle-size materials which block the screening holes, and therefore the large-particle-size materials are prevented from blocking the leaking holes. The purposes of adjusting the size of the screening holes and preventing the leaking holes from being blocked are achieved by the same device, the structure is simple, and operation is convenient.

The invention relates to construction waste crushing and screening equipment. The equipment comprises a bottom plate, support frames, a screening device and a crushing device, wherein the support frames are evenly installed in the middle of the upper end of the bottom plate; the screening device is installed between the upper ends of the support frames; a feeding hole is formed in the upper end of the screening device; and the crushing device is installed on the feeding hole. The equipment can solve the problems that existing equipment is poor in crushing effect and uneven in crushing when crushing construction wastes, more large particle substances exist in the crushed construction wastes and follow-up recycling of the construction wastes is not facilitated, and meanwhile, the existing equipment is poor in screening effect when crushing the construction wastes and cannot effectively screen the construction wastes, and large particle impurities usually block meshes in a screen easily to affect the screening efficiency of the construction wastes.

The invention relates to a mineral powder coating production and preparation process. A bottom plate, supporting frames and a screening device are included, wherein the supporting frames are symmetrically installed at the upper end of the bottom plate, and the screening device is installed between the upper ends of the supporting frames. According to the process, the problem that the preparation effect of coatings is affected because the screening effect is poor, screening is uneven, and ultrafine powder particles in the powder coatings cannot be effectively removed when the powder coatings are screened through existing equipment, and the problem that the air environment is prone to being affected as the ultrafine powder particles in the airflow are prone to diffusing into the air becauseultrafine powder in airflow usually cannot be effectively collected or filtered when the powder coatings are processed through the existing equipment can be solved.

The invention relates to a screening device, in particular to a fertilizer sampling and screening device. The fertilizer sampling and screening device is uniform in screen and improves the detection accuracy. The fertilizer sampling and screening device comprises a mounting frame, a square rod, vertical rods, a shaking assembly, a discharging assembly, a collecting assembly and the like; the square rod is installed on the mounting frame; the vertical rods are arranged on the front side and the rear side of the square rod; the vertical rods on the front side and the rear side are provided withthe shaking assembly for shaking in a front-and-back moving mode; the bottom of the shaking assembly is provided with the discharging assembly for discharging in a rotary mode; and the mounting frameis provided with the collecting assembly for collecting in a rotary mode. Fertilizers are screened through the shaking assembly, so that the fertilizers are screened more uniformly, and the fertilizers are discharged through the discharging assembly, so that waste caused when the fertilizers fall from the two sides in the falling process can be prevented.

The invention relates to the technical field of Chinese chestnut processing, in particular to a Chinese chestnut screening device. The device comprises a machine frame, a screening box, and a screening mechanism, wherein the screening box is horizontally arranged on the machine frame, the top of the screening box is of an opened structure, one end of the top of the screening box is provided with afeeding slideway, the screening mechanism is arranged on the screening box and is used for screening Chinese chestnuts with different diameters; and the screening mechanism comprises a screening plate and a movable baffle, wherein the screening plate is inclined and is arranged at the upper end of the interior of the screening box in a reciprocating motion mode in the length direction of the screening box, the movable baffle is vertical and is located above the screening plate in a movable mode in the length direction of the screening plate, a preset distance is formed between the bottom of the movable baffle and the top of the screening plate, and preset distances are formed between the two sides of the movable baffle and the inner side of the screening box. According to the Chinese chestnut screening device, the Chinese chestnuts can be evenly shifted while screening, the Chinese chestnuts are screened through screens with different mesh diameters, and thus the screening precision rate is increased, and the production efficiency is improved.

The invention discloses a feeding mechanism with a pretreatment function for high-purity silicon production and a using method thereof. The feeding mechanism comprises a flat plate, a concentric-square-shaped frame is arranged above the flat plate, a U-shaped frame is movably connected into the concentric-square-shaped frame, straight plates are movably connected to the outer walls of the left side and the right side of the concentric-square-shaped frame, and the bottoms of the straight plates are fixedly connected with the top of the flat plate; and supporting plates are fixedly connected tothe left side and the right side of the flat plate correspondingly, a screen is installed at the position, close to the right side, of the bottom of the U-shaped frame, a discharging pipe is installedat the position, close to the left side, of the bottom of the U-shaped frame, and the bottom end of the discharging pipe penetrates through the top of the flat plate and extends to the position belowthe flat plate. According to the feeding mechanism, through mutual cooperation of all assemblies, a first grinding piece can rotate and move leftwards and rightwards, so that the grinding and pretreatment efficiency is effectively improved, meanwhile, a swing plate can be driven to swing leftwards and rightwards, the purpose of intermittent feeding is achieved, and blockage caused by a barrel canbe effectively prevented.

The invention discloses metal screen cloth for pharmacy, which comprises a screen cloth cylinder (1) and a screen cloth rack (2) for fixing the screen cloth cylinder (1), wherein the screen cloth rack (2) comprises an upper circular ring, a middle circular ring and a lower circular ring (3) and parallel vertical rods (4); the upper circular ring, the middle circular ring and the lower circular ring (3) are sleeved on the outer circumference of the screen cloth cylinder (1); and the parallel vertical rods (4) is used for connecting the three circular rings (3) together in parallel. The metal screen cloth for pharmacy provided by the invention has the advantages of rational structural design, convenience in use, firmness, durability, capabilities of uniformly sieving medicament particles, guaranteeing the quality of a medicament and increasing the working efficiency and wide application range.

The invention discloses a plastic particle screening device. The plastic particle screening device comprises a box body supported by supporting columns, a feeding box is arranged at the upper end of the box body, a segmented discharging device is arranged in the feeding box, a discharging baffle is arranged at the position, located at the lower end of the segmented discharging device, of the feeding box, a cylinder movably connected to the box body is arranged below the discharging baffle, the cylinder abuts against the lower end face of the discharging baffle, the interior of the cylinder is divided into a first screen part, a second screen part and a material leakage net part through partition plates at equal angles, a first transmission device is arranged at the lower end of the box body, a material conveying device opposite to the first screen part, the second screen part and the material leakage net part is arranged in the cylinder, and one end of the cylinder is provided with a discharge pipe opposite to the first screen part, the second screen part and the leakage net part. According to the plastic particle screening device, the cylinder is driven to rotate through the transmission device, so that the staying time of plastic particles on the first screen part, the second screen part and the material leaking net part is the same, the plastic particles can be uniformly screened, and then screening is more thorough.

The invention relates to a tea making process. The tea making process mainly comprises the following steps of equipment inspection, manual feeding, tea screening and broken residue collection. A tea screening device comprises a mounting frame, a screening suite and a collecting suite, and the screening suite and the collecting suite are sequentially arranged in the mounting frame from top to bottom. The tea making process can solve the following problems existing in the production process of existing tea that a, in the stir-frying process of the existing tea, the water of the tea needs to be stir-fried to be dry, so that the tea becomes dry and fragile, a large number of tea fragments are carried during bottling, and the quality is greatly influenced; and b, after the tea which is stir-fried to be dry is screened, the screened broken materials are often put into a collecting bag for unified storage, when a collecting belt is used for collecting, the phenomenon that the collecting bag is separated and leaked due to the fact that a bag opening is separated from a collecting container often occurs, then the phenomenon that the broken tea residues are scattered occurs, manual cleaningis needed, the workload of workers is greatly improved, and manpower is wasted.

The invention discloses an agricultural bean grain reciprocating screening device which comprises a feeding box and a screening barrel. A partition is arranged inside the feeding box and divides the inside of the feeding box into a feeding chamber positioned at the left end and a discharging chamber positioned at the right end, the screening barrel is provided with a backflow port communicated with the feeding chamber, the backflow port is positioned on the inner side of a screening net barrel, the side wall of the screening barrel is communicated with the discharging chamber through a guide pipe, a first discharging port is arranged on the side wall of the discharging chamber, a second discharging port is arranged on the side wall of the bottom of the feeding chamber, and a bottom baseplate is arranged on the lower side of the feeding box and connected with the feeding box through multiple damping devices. The device is simple in structure; a screw conveyor is uniform in bean grain lifting, thereby being uniform in screening, so that the circumstance that screening effect is bad due to simultaneous screening of many grains is avoided; repeated screening can be realized, so that screening effect is improved; feeding from the top end is avoided during feeding, so that labor is saved.