13results about How to "Improve sand screening efficiency" patented technology

The utility model provides a sand screening and cooling device for sand casting, which comprises a shell, and a power box is fixed on the side part of the shell; the top end of the shell is slidably connected with a bracket. An inclined sand screening assembly is fixed to one side of the top end of the bracket. The sand screening assembly is connected with the shaking driving assembly, the shaking driving assembly is used for driving the bracket, and the sand screening assembly shakes and screens sand on the shell; the shaking driving assembly is arranged in the power box, a cooling assembly is arranged on the side portion of the sand screening assembly and comprises a draught fan, an inner insertion pipe and an outer sleeve, the draught fan is installed in the power box, and the air outlet end of the draught fan communicates with the inner insertion pipe; the inner intubation tube is slidably connected with the outer sleeve; the outer sleeve is fixed and communicated with the sand screening assembly. According to the sand screening and cooling device for sand mold casting, sand screening and sand cooling can be achieved, the occupied area is small, sand screening is conducted through the sand screening assembly shaking leftwards and rightwards, the sand screened through shaking is cooled through air blowing of the cooling assembly during sand screening, the contact area of the sand and air can be increased, and cooling of the sand is improved while sand screening is conducted.

The utility model discloses a sand screening device for construction engineering, which relates to the technical field of construction engineering and comprises a sand screening box, the front surface of the sand screening box is hinged with a box door, the upper surface of the sand screening box is fixedly communicated with two symmetrical feeding cylinders, the interiors of the two side surfaces of the sand screening box are respectively provided with a rectangular groove and a material flowing groove, and the material flowing grooves are positioned below the rectangular grooves; two screens are slidably connected into the sand screening box, the faces, close to each other, of the two screens make contact, and the faces, away from each other, of the two screens are inserted into the two rectangular grooves correspondingly. Through cooperation of the driving assembly, the material flowing groove and the inverted-V-shaped material flowing plate, after sand screening is completed, the two screens can be driven to move in the direction away from the sand screening box, sundries on the screens are automatically scraped off, and the scraped sundries can fall onto the inverted-V-shaped material flowing plate and flow out of the sand screening box along the inverted-V-shaped material flowing plate and the material flowing groove; therefore, the purpose of conveniently cleaning the sundries on the screen is achieved.

The utility model discloses a sand screening machine for constructional engineering. The sand screening machine comprises a shell, a sand storage box connected to a top plate of the shell, an intermittent quantitative discharging mechanism, a vibration screening mechanism and a driving mechanism connected to the outer wall of the shell, wherein the intermittent quantitative discharging mechanism and the vibration screening mechanism are arranged in the shell. And a discharging opening penetrating through the top plate of the shell and the sand storage box is formed in the joint of the top plate of the shell and the sand storage box. The feeding end of the intermittent quantitative discharging mechanism communicates with the discharging opening, the power input end of the intermittent quantitative discharging mechanism is connected with the driving mechanism so as to intermittently rotate in the circumferential direction under the action of the driving mechanism, and then quantitative sand materials are intermittently discharged into the vibration screening mechanism below. The shell is provided with a first discharging port and a second discharging port which communicate with the two discharging ends of the vibration screening mechanism correspondingly, and the vibration screening mechanism is used for conducting vibration screening on sand falling into the vibration screening mechanism so that miscellaneous materials and qualified materials can be discharged from the first discharging port and the second discharging port correspondingly. According to the novel sand screening machine, the sand screening efficiency and the sand screening quality can be improved, and the maintenance and repair workload is reduced.

The utility model provides a sand screening device for house construction, and belongs to the technical field of house construction. The sand screening device solves the problems that in the prior art, sand and stone blocks can be clamped in meshes of a sand screening net during sand screening, the sand screening efficiency can be affected, and the progress of house construction engineering is affected as the sand and stone blocks are clamped more and more along with follow-up sand screening. The sand screening device comprises a sand screening barrel and a fixing frame, the two ends of the sand screening barrel are connected with the fixing frame through a first connecting ring and a second connecting ring correspondingly, the two ends of the sand screening barrel are rotationally connected with the first connecting ring and the second connecting ring correspondingly, and a rotating assembly is arranged in the middle of one side of the first connecting ring and drives the sand screening barrel to rotate. A material cleaning assembly is arranged above one side of the first connecting ring, connecting blocks are rotationally arranged on the two sides of the outer wall of the second connecting ring, and the second connecting ring is connected with the fixing frame through the connecting blocks. The sand screening machine is mainly used for screening sand for house construction.

The utility model relates to the technical field of constructional engineering appliances, and discloses sand screening equipment for constructional engineering, which comprises a machine body, a coarse material port is arranged on the side surface of the machine body, a screen is fixedly mounted on the inner wall of the machine body, and a paving component is arranged at the top of the machine body. According to the sand screening equipment for constructional engineering, the paving assembly is arranged and matched with synchronous rotation of a rotating sleeve and a rotating rod, and at the moment, through guiding and limiting of a convex ball and a wave groove, the rotating sleeve can synchronously conduct small-amplitude reciprocating motion in the vertical direction when rotating; a connecting rod is matched to realize left-right reciprocating motion of an arc-shaped push plate on a paving disc, so that accumulated sand falling onto the paving disc can be intermittently pushed outwards, the sand can be dispersed on a screen along with the continuously rotating paving disc, the condition that the sand is accumulated during feeding is avoided, and the quality of the sand is improved. And normal feeding and sieving of the sand are influenced.

The utility model discloses an oil field fracturing waste liquid desanding device, which relates to the technical field of oil field exploitation and is characterized in that a first cyclone desander is provided with a first liquid inlet, a first sand outlet and a first liquid outlet; the second cyclone desander is provided with a second liquid inlet, a second sand outlet and a second liquid outlet; the separating, filtering and settling tank is provided with a settling tank liquid inlet pipe, a settling tank first sand outlet, a settling tank second sand outlet and a settling tank liquid outlet pipe; the filter screen type filter is provided with a filter liquid inlet, a filter sand outlet and a filter liquid outlet; the water purification tank is provided with a water purification tank liquid inlet; and the sand-water separation tank is provided with a separation tank sand inlet, a separation tank sand outlet and a separation tank liquid outlet. By arranging the sand-water separation tank, accumulated sand discharged from each sand outlet is dehydrated, and separated clear water flows back to the first liquid inlet for circulation, so that the sand removal recovery rate and the clear water utilization rate of the oilfield fracturing waste liquid are improved.

The utility model discloses a constructional engineering sand screening device, which relates to the technical field of constructional engineering and comprises a sand screening box body, the top of the sand screening box body is fixedly connected with a sand inlet funnel, a primary screening mechanism is arranged above an inner cavity of the sand screening box body, and a secondary screening mechanism is arranged at the middle end of the inner cavity of the sand screening box body. The secondary screening mechanism is located below the primary screening mechanism, a movable door is movably installed on the front side of the sand screening box body, a broken stone collecting mechanism is arranged on the left side of the sand screening box body, a left-right through garbage outlet hole is formed in the upper portion of the left side of the sand screening box body, and a guide shell is fixedly installed on the upper portion of the left side of the sand screening box body. The guide shell is located on the left side of the garbage outlet hole. Through cooperation of the guide shell, the broken stone collecting mechanism and the sand screening box body, stones filtered out from sand and garbage can be rapidly collected, the sand screening structure is effectively prevented from being blocked, meanwhile, shutdown cleaning is not needed, and the cleaning efficiency is effectively improved.

The utility model discloses a building construction sand screening machine which comprises a material injection hopper, a material feeding piece is arranged outside the material injection hopper, two sets of supporting plates are fixedly connected to the outer surface of the material injection hopper, two sand screening frames are arranged below the material injection hopper, and supporting pieces are arranged on the sides, close to each other, of the two sets of supporting plates. Bearing rings are embedded in the side faces, close to each other, of the two supporting plates. According to the building construction sand screening machine, by means of the arrangement of the feeding piece, a gear motor can drive a driving rod and a bidirectional spiral feeding blade plate to operate, bidirectional pushing of sand in a material injection hopper can be achieved, the sand can continuously slide to the positions above two sand screening frames through two material injection pipes, the tedious operation of frequent manual material injection is avoided, and the working efficiency is improved. The sand screening operation can be continuously and stably carried out, and the two sand screening frames are driven by the vibration motor to generate vibration, so that sand can be fully screened in the two sand screening frames. The effect of bidirectional sand screening at the same time is achieved, and the sand screening efficiency is improved.

The utility model relates to the technical field of constructional engineering sand screening, in particular to a constructional engineering sand screening machine which comprises a screening box, a feeding pipe is fixedly installed on the top face of the screening box in a penetrating mode, a dispersing mechanism is arranged in the screening box, a sand screening mechanism is arranged below the dispersing mechanism, and the dispersing mechanism comprises a dispersing part and a power part. The dispersing mechanism is used for uniformly dispersing sand, the sand screening mechanism comprises a sand screening part and a connecting part, and the sand screening mechanism is used for screening the sand. A motor is started to drive a rotating shaft and a rotating plate to rotate, the rotating plate drives a connecting shaft and a moving block to do circular motion, the moving block slides in a fixed frame and drives the fixed frame to do front-back reciprocating motion, the fixed frame drives a moving pipe to do front-back reciprocating motion, and meanwhile when sand is added, sand flows to drive a plurality of stirring blades to rotate; and therefore, the added sand can uniformly flow into the filter plate, the filter plate can comprehensively screen the sand, the utilization rate of the filter plate is increased, and the sand screening efficiency is improved.

The utility model relates to the field of engineering construction, in particular to a sand screening device for engineering construction. A drying assembly is arranged on one side of a feeding port of the roller and comprises a fixing cylinder, a plurality of sets of partition plates distributed annularly are arranged on the inner wall of the fixing cylinder, cutting discs are arranged among the multiple sets of partition plates, and a plurality of cutting openings are formed in the ends, close to the inner wall of the fixing cylinder, of the cutting discs; according to the sand cutting device, the multiple sets of partition plates and the cutting discs are arranged, in the process that sand blocks naturally roll downwards from gaps among the multiple sets of partition plates in the fixing cylinder, the connecting rods rotate to drive the cutting discs to rotate, sand crushing and large sand scattering are completed, and after the air pipe is started, input hot air is blown out from the air outlet holes along the airflow channel to dry the sand; the moisture in the sand is reduced, so that the sand adhered to the surface of the screen cannot be adhered to the surface of the screen due to damp, and the sand screening efficiency is effectively improved when the roller rolls.

This utility model discloses a roller pressure rod structure for a cat litter box, including symmetrically arranged shaft grooves and a flip-up pressure rod, a locking assembly at the free end of the pressure rod, and a rotating support assembly. The shaft groove is a semi-circular groove with an open top. The pressure rod is hinged to the edge of the shaft groove opening via a shaft seat. When closed, the pressure rod and shaft groove fit together to form a circular ring that embraces the rotating shaft. When open, it allows the rotating shaft of the litter box roller to disengage. The locking assembly achieves stable locking and quick manual unlocking of the pressure rod through a hook, a seat, and a return spring. The rotating support assembly consists of the shaft groove, a roller groove on the inner side of the pressure rod, and a roller, converting sliding friction into rolling friction, reducing resistance and wear. The purpose of this utility model is to provide a solution that solves the problems of slow disassembly, difficult cleaning, and easy wear of traditional screw fixing methods, as well as the unreliable locking of existing snap-fit ​​structures, thereby achieving "one-click opening and closing" for quick disassembly, improving cleaning efficiency and user experience, and significantly enhancing the user experience.

The utility model belongs to the technical field of sand screening, and particularly relates to a sand screening device for constructional engineering, which comprises a mounting frame, a rotary drum rotationally connected in the mounting frame, a plurality of mounting frames mounted on the outer side of the rotary drum and a plurality of screens detachably connected in the mounting frames. The mounting frames are uniformly distributed on the periphery of the rotary drum, inserting grooves matched with the screen cloth are inwards formed in the ends, away from the rotary drum, of the mounting frames, limiting rods are slidably connected to one sides of the mounting frames, and extension springs used for connecting the limiting rods and the mounting frames are arranged on the outer walls of the limiting rods; limiting holes matched with the limiting rods are symmetrically formed in the two sides of the mounting frame. By arranging the rotating drum, the mounting frame, the limiting rod, the extension spring and other assemblies, the screen mesh can be conveniently mounted and dismounted, different types of screen meshes can be conveniently switched in the sand screening process, the previous screen mesh does not need to be dismounted for mounting other screen meshes, use is convenient, and the sand screening efficiency is improved.

The utility model provides a material screening device for building construction, belongs to the technical field of material screening, and effectively solves the problem that sand screening operation on a small construction site is inconvenient at present. According to the technical scheme, the device comprises a mounting box, a feeding hopper is arranged on the inner side of the upper portion of the mounting box, a discharging plate is arranged below the feeding hopper, a sieve plate is arranged below the discharging plate, a discharging hopper is arranged below the sieve plate, universal wheels are arranged at the bottom of the mounting box, the discharging plate is connected with a reciprocating component, and the sieve plate is connected with a vibrating component. And a transmission part is arranged between the vibration part and the reciprocating part. The material screening device for building construction has the beneficial effects that the material screening device for building construction is convenient to use and capable of effectively improving the gravel efficiency and reducing the labor intensity.