CN210159763U - Dry and wet sand classification washing device - Google Patents

Abstract

The utility model discloses a dry and wet sand classification washing device, which comprises a sand washing tank, an impeller, a driving mechanism, an annular water retaining groove and a plurality of filtering hoppers, wherein each hopper is provided with a first filtering sieve pore along the side wall of the length direction of a wheel shaft; the sand box, the dry sand sorting production mechanism and the wet sand sorting production mechanism are also included. The utility model overcomes the problem that traditional sand washer can't the while production dry sand and wet sand to the not good, after the washing of cleaning performance of grit, grit after the washing, the cleaning performance is good, can the while production various grades of dry sand and wet sand of joining in marriage, and equipment life is longer, and the commonality is stronger, and the range of application is more extensive, is fit for generally promoting.

Description

Dry and wet sand classification washing device

Technical Field

The utility model relates to a system sand device field, in particular to dry and wet sand classification washing device.

Background

A wheel bucket type sand washer is a common washing and selecting device used in combination with a sand making machine. Wheel bucket type sand washer is mainly by washing the sand groove, the impeller, the hopper, motor and speed reducer are constituteed, in operation, the motor passes through the slow rotation of speed reducer drive impeller, the grit gets into by the feed trough and washes in the sand groove, roll under the drive of impeller, and grind mutually, detach the impurity that covers the grit surface, add water simultaneously, form powerful rivers, in time take away impurity and the little foreign matter of proportion, and discharge from the overflow mouth in washing the sand groove, the blown down tank is poured into to clean grit by rotatory wheel bucket, accomplish the cleaning action of grit.

However, the traditional sand washer usually filters impurities on the surface of sand through the screen at the bottom of the hopper, so that the filtering effect is poor, the sand damages the screen greatly, and the influence on the service life of equipment is large; the grit after the washing of cooperation traditional sand washer, not classifying the grit once more, the grit of producing usually only single kind, or dry sand, or wet sand, can't produce finished product dry sand and finished product wet sand simultaneously, and single kind grit reading distributes not evenly enough, and the gradation is stable inadequately.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dry and wet sand classification washing device has solved the problem that the sand making device can't produce dry sand and wet sand simultaneously to the not good, the grit after wasing of cleaning effect of grit among the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a dry and wet sand classification washing device comprises a sand washing groove, an impeller and a driving mechanism, wherein the impeller comprises a wheel shaft and a plurality of hoppers, the impeller is erected in the sand washing groove through the wheel shaft, the plurality of hoppers are uniformly arranged at intervals along the rotating direction of the outer edge of the wheel shaft, and the driving mechanism drives the wheel shaft to rotate in the sand washing groove;

each hopper is provided with a first filtering sieve hole along the side wall of the length direction of the wheel shaft, the filtering hoppers are correspondingly arranged along the outer sides of the hoppers one by one and are parallel to the corresponding hoppers, each filtering hopper is opposite to the corresponding first filtering sieve hole, each filtering hopper is provided with a second filtering sieve hole along the side wall of the length direction of the wheel shaft, and the annular water retaining groove surrounds the outer sides of the filtering hoppers and is opposite to all the second filtering sieve holes;

the sand box, the dry sand sorting production mechanism and the wet sand sorting production mechanism are also included;

the sand box is arranged outside the sand washing groove and positioned in the blanking direction of the hopper, a first sand washing discharge port and a second sand washing discharge port are formed in the sand box, a feed port of the dry sand sorting production mechanism is communicated with the first sand washing discharge port, and a feed port of the wet sand sorting production mechanism is communicated with the second sand washing discharge port.

The utility model has the advantages that: traditional sand washer drives the impeller through actuating mechanism and rotates in the sand washing groove to wash the impurity on the grit surface in the impeller feeding hopper, on this basis, through the utility model discloses in set up the first filter sieve mesh on the hopper lateral wall, realize the first washing to the grit, some grit of accomplishing the first abluent great particle diameter is left in the hopper, fall into the litter box along with the rotation of hopper, and some grit of accomplishing the first abluent less particle diameter gets into in filtering the hopper through first filter sieve mesh, rethread sets up the second filter sieve mesh in filtering the hopper outside, realize the further washing to the grit of less particle diameter, the grit of accomplishing further abluent falls into the litter box along with the rotation of impeller, realize the screening of grit and wash, and the cleaning performance is good, especially the grit of less particle diameter; the water slurry generated by cleaning and filtering the sand enters the annular water retaining groove through the second filtering sieve pores, and the water slurry can be guided into the sand washing groove through the annular water retaining groove and can be prevented from being discharged outside the sand washing groove or into a wheel shaft of the impeller, so that the damage to the wheel shaft is reduced, and the service life of the impeller is prolonged; the first filtering sieve mesh arranged on the outer side of the hopper and the second filtering sieve mesh arranged on the outer side of the filtering hopper can reduce the pressure of the gravel on the filtering sieve meshes compared with the traditional filtering sieve mesh arranged at the bottom of the hopper, thereby reducing the damage to the filtering sieve meshes and prolonging the service life of the hopper and the filtering sieve meshes; the grit after meticulous washing falls into the sand box, selects separately the feed inlet intercommunication of production mechanism with dry sand through the first grit discharge gate and the wet sand of sand box, and the second grit discharge gate selects separately the feed inlet intercommunication of production mechanism with the wet sand, can realize carrying out accurate segmentation to the grit after the washing, obtains two kinds of grit (being dry sand and wet sand) that system sand in-process needs simultaneously, and the commonality is stronger, and the range of application is more extensive, is fit for generally promoting.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

further: the aperture of the first filtering screen aperture is larger than the aperture of the second filtering screen aperture.

The beneficial effects of the above further scheme are as follows: the aperture of first filtration sieve mesh is greater than the aperture of second filtration sieve mesh, can realize further filtering the washing to the impurity on grit surface, further improves cleaning performance, the less grit of unusual particle diameter, and wherein, the concrete aperture size of first filtration sieve mesh and second filtration sieve mesh can be selected according to user's actual need.

Further: the vibrating screen also comprises a first vibrating screen and a second vibrating screen;

the first vibrating screen is arranged on the sand washing groove in the blanking direction of the hopper, the second vibrating screen is arranged on the sand box outside the sand washing groove, a discharge port of the first vibrating screen extends to the outside of the sand washing groove, and the second vibrating screen is arranged below the discharge port of the first vibrating screen and extends to the sand box.

The beneficial effects of the above further scheme are as follows: through setting up the first shale shaker on the sand washing groove, the grit that is less than the aperture of first shale shaker will fall into the sand washing groove, washs the screening once more, and the grit that is greater than the aperture of first shale shaker will fall into the second shale shaker, through the screening of second shale shaker, obtains the grit of the particle size that satisfies the user demand, and wherein, the sieve mesh aperture of first shale shaker and second shale shaker can select according to user's actual need.

Further: the first vibrating screen and the second vibrating screen are both obliquely arranged and adjustable in height.

The beneficial effects of the above further scheme are as follows: the heights of the first vibrating screen and the second vibrating screen are adjustable, so that the first vibrating screen is closer to a discharge port of the hopper, and the second vibrating screen is closer to the discharge port of the first vibrating screen, so that the screening of gravels is facilitated; first shale shaker and second shale shaker all incline to set up, more do benefit to the grit that the second shale shaker received first shale shaker screening to and more do benefit to the grit that the sand box received the second shale shaker screening, thereby make sand to convenient follow-up grit of collecting in the sand box categorised, obtain the dry sand and the wet sand that the user needed simultaneously.

Further: the dry sand sorting production mechanism comprises a slurry pump, a cyclone separator, a first multistage vibrating screen and a plurality of dry sand finished product boxes; the feed inlet of sediment stuff pump with first sand washing discharge gate intercommunication, cyclone's feed inlet with the discharge gate intercommunication of sediment stuff pump, cyclone's underflow opening with the feed inlet intercommunication of first multistage shale shaker, it is a plurality of dry sand finished product case respectively with the discharge gate one-to-one intercommunication of first multistage shale shaker.

The beneficial effects of the above further scheme are as follows: because the sand and stone after sand washing contain certain moisture, the sand and stone in the first sand washing discharge port and the moisture are pumped into the cyclone separator through the slurry pump, the cyclone separator separates the sand and the moisture, the sand and stone are discharged from the bottom flow port of the cyclone separator, the moisture is discharged from the overflow port of the cyclone separator, the sand and stone discharged from the bottom flow port are finely screened through the first multistage vibrating screen, sand and stone with various particle sizes can be obtained, and then, finished dry sand with various grades can be obtained through a plurality of dry sand finished product boxes which are respectively communicated with the discharge ports of the first multistage vibrating screen in a one-to-one correspondence manner, so that various requirements of users on the sand and stone are met, and the universality is strong; the first multistage vibrating screen is a prior art, the number of stages can be selected according to the actual needs of a user, for example, the vibrating screen in patent No. CN108972896A 'a station type production line capable of producing sand and aggregate simultaneously' is a three-axis elliptical screen with more than three layers, a three-layer screen or a four-layer screen configuration can be selected according to the discharge requirement, the vibrating screen at least comprises a bottommost lower layer screen mesh specification of 3mm multiplied by 3mm and a second layer screen mesh specification of 5mm multiplied by 5mm from bottom to top, and the screened material particle size is 0-3 mm, 3-5 mm, 5-10 mm, 10-30 mm, more than 30mm and the like.

Further: the dry sand sorting production mechanism further comprises a heater, and the heater is arranged on a channel between the bottom flow port of the cyclone separator and the feeding port of the first multistage vibrating screen.

The beneficial effects of the above further scheme are as follows: certain moisture is still remained in the grit that discharges through cyclone's underflow opening, through the heater, can carry out the drying to the moisture in the grit and get rid of, improves the quality of finished product dry sand.

Further: the dry sand sorting production mechanism further comprises a first dust collector, the first dust collector comprises a first air suction opening, a first dust suction pipeline and a first dust suction fan, the first air suction opening is communicated with the first dust suction fan through the first dust suction pipeline, and the first air suction opening is formed in the side wall of the first multistage vibrating screen.

The beneficial effects of the above further scheme are as follows: through setting up the first extraction opening on first multistage shale shaker lateral wall to and first dust absorption pipeline and first dust absorption fan, can take out dust and moisture that grit produced when sieving in first multistage shale shaker, further improve the quality of the dry sand of finished product.

Further: the green sand sorting production mechanism comprises a second multistage vibrating screen, a water tank and a plurality of green sand finished product boxes; the feed inlet of the second multistage vibrating screen is communicated with the second sand washing discharge outlet, the discharge outlets of the second multistage vibrating screen are respectively communicated with the plurality of wet sand finished product boxes in a one-to-one correspondence manner, and each channel between the discharge outlet of the second multistage vibrating screen and the corresponding wet sand finished product box is communicated with the water tank; the discharge gate of the multistage shale shaker of second with it is equipped with the moisture system of observing and controling that is used for measuring the water content of grit and control water feeding volume respectively to equally divide on every passageway between the water tank.

The beneficial effects of the above further scheme are as follows: in the process of green sand production, the water content in the sand with various gradations is required to be determined, so that the sand with various gradations is screened out by the second multistage vibrating screen, the water content of the sand with various gradations is respectively measured by the water measuring and controlling system arranged on each channel between the discharge port of the second multistage vibrating screen and the water tank, and the water adding amount of the green sand with various gradations is controlled and produced by the water measuring and controlling system, so that the finished green sand with various gradations is obtained, various requirements of users are met, and the universality is stronger; the second multistage vibrating screen is the prior art, and the stage number of the second multistage vibrating screen can be selected according to the actual needs of a user; wherein, moisture system of observing and controling measures water content and control water feeding volume are prior art, and concrete no longer give unnecessary details, the utility model discloses do not relate to computer program's improvement, for example, moisture sensor, measuring circuit, signal shaping module, controller and solenoid valve control system in patent number CN206710358U "a high accuracy intelligence molding sand moisture system of observing and controlling".

Further: the moisture measurement and control system comprises a moisture sensor, a controller, an electromagnetic valve and a water pump, wherein the controller is respectively connected with the moisture sensor, the electromagnetic valve and the water pump, and each water pump is communicated with the water tank.

The beneficial effects of the above further scheme are as follows: the water content in the sand stones screened by the second multistage vibrating screen is sampled by the water content sensor, the water adding amount is obtained by the controller according to the water content and the flow of the electromagnetic valve, and the required water is pumped out from the water tank by the water pump, so that the finished wet sand with various grades is produced.

Further: the wet sand sorting production mechanism further comprises a second dust collector, the second dust collector comprises a second air suction opening, a second dust suction pipeline and a second dust suction fan, the second air suction opening is communicated with the second dust suction fan through the second dust suction pipeline, and the second air suction opening is formed in the side wall of the second multistage vibrating screen.

The beneficial effects of the above further scheme are as follows: through setting up the second extraction opening on the multistage shale shaker lateral wall of second to and second dust absorption pipeline and second dust absorption fan, dust and moisture that the grit produced when sieving in first multistage shale shaker can be taken out, thereby make things convenient for follow-up moisture to observe and control the water content of system in to the grit after the screening and carry out the accuracy and measure, the result of observing and controlling is more accurate, thereby further improves the quality of finished product wet sand.

Drawings

Fig. 1 is a schematic structural view of the dry and wet sand classification washing device of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the device comprises a sand washing groove, 2, an impeller, 3, a first vibrating screen, 4, a second vibrating screen, 5, a sand box, 6, a dry sand sorting production mechanism, 7, a wet sand sorting production mechanism, 21, a wheel shaft, 22, a hopper, 23, a filtering hopper, 24, an annular water retaining groove, 51, a first sand washing discharge port, 52, a second sand washing discharge port, 61, a slurry pump, 62, a cyclone separator, 63, a heater, 64, a first multistage vibrating screen, 65, a first dust collector, 66, a dry sand finished product box, 71, a second multistage vibrating screen, 72, a moisture sensor, 73, a controller, 74, an electromagnetic valve, 75, a water pump, 76, a water tank, 77, a second dust collector, 651, a first air suction port, 771 and a second air suction port.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Embodiment, as shown in fig. 1, a dry and wet sand classification washing device comprises a sand washing tank 1, an impeller 2 and a driving mechanism, wherein the impeller 2 comprises an axle 21 and a plurality of hoppers 22, the impeller 2 is erected in the sand washing tank 1 through the axle 21, the plurality of hoppers 22 are uniformly arranged at intervals along the rotating direction of the outer edge of the axle 21, the driving mechanism drives the axle 21 to rotate in the sand washing tank 1, and the dry and wet sand classification washing device is characterized by further comprising an annular water retaining tank 24 and a plurality of filtering hoppers 23;

each hopper 22 is provided with a first filtering sieve hole along the side wall of the wheel shaft 21 in the length direction, the filtering hoppers 23 are correspondingly arranged along the outer sides of the hoppers 22 one by one and are parallel to the corresponding hopper 22, each filtering hopper 23 is opposite to the corresponding first filtering sieve hole, each filtering hopper 23 is provided with a second filtering sieve hole along the side wall of the wheel shaft 21 in the length direction, and the annular water retaining groove 24 surrounds the outer side of each filtering hopper 23 and is opposite to all the second filtering sieve holes;

the sand box comprises a sand box 5, a dry sand sorting production mechanism 6 and a wet sand sorting production mechanism 7;

the sand box 5 is arranged outside the sand washing groove 1 and positioned in the blanking direction of the hopper 22, a first sand washing discharge hole 51 and a second sand washing discharge hole 52 are formed in the sand box 5, the feed hole of the dry sand sorting production mechanism 6 is communicated with the first sand washing discharge hole 51, and the feed hole of the wet sand sorting production mechanism 7 is communicated with the second sand washing discharge hole 52.

Specifically, the pore size of the first filter mesh is larger than the pore size of the second filter mesh.

The working principle of the dry and wet sand classification washing device of the embodiment is as follows: the first cleaning of the gravels is realized through the first filtering sieve pores arranged on the side wall of the hopper, some gravels with larger grain diameter which finish the first cleaning are left in the hopper and fall into the sand box along with the rotation of the hopper, while some of the smaller-sized sand which has completed the first cleaning passes through the first filter mesh into the filter hopper, then the sand and stone with smaller grain diameter are further cleaned through a second filtering sieve hole arranged at the outer side of the filtering hopper, the sand and stone which are further cleaned fall into the sand box along with the rotation of the impeller, the first sand washing discharge port of the sand box is communicated with the feed port of the dry sand sorting production mechanism, the second sand washing discharge port is communicated with the feed port of the wet sand sorting production mechanism, the sand and stone after being cleaned can be accurately subdivided, and two kinds of sand and stone (namely dry sand and wet sand) required in the sand making process can be obtained simultaneously.

The dry and wet sand classification washing device of the utility model has better washing effect, especially sand and stone with smaller grain diameter compared with the traditional sand washer through the first washing of the hopper and the first filtering sieve pores and the second washing of the filtering wheel hopper and the second filtering sieve pores; the annular water retaining groove can guide water slurry generated by cleaning and filtering sand into the sand washing groove, and can prevent the water slurry from being discharged outside the sand washing groove or into a wheel shaft of the impeller, so that the damage to the wheel shaft is reduced, and the service life of the impeller is prolonged; the first filtering sieve mesh arranged on the outer side of the hopper and the second filtering sieve mesh arranged on the outer side of the filtering hopper can reduce the pressure of the gravel on the filtering sieve meshes compared with the traditional filtering sieve mesh arranged at the bottom of the hopper, thereby reducing the damage to the filtering sieve meshes and prolonging the service life of the hopper and the filtering sieve meshes; two kinds of sand stones (namely dry sand and wet sand) needed in the sand making process are obtained simultaneously, the universality is stronger, the application range is wider, and the method is suitable for general popularization.

Preferably, as shown in fig. 1, further comprises a first vibrating screen 3 and a second vibrating screen 4;

the first vibrating screen 3 is arranged on the sand washing tank 1 in the blanking direction of the hopper 22, the second vibrating screen 4 is arranged on the sand box 5 outside the sand washing tank 1, the discharge port of the first vibrating screen 3 extends to the outside of the sand washing tank 1, and the second vibrating screen 4 is arranged below the discharge port of the first vibrating screen 3 and extends to the sand box 5.

Specifically, the first vibrating screen 3 and the second vibrating screen 4 are both obliquely arranged and adjustable in height.

Through setting up the first shale shaker on the sand washing groove, the grit that is less than the aperture of first shale shaker will fall into the sand washing groove, washs the screening once more, and the grit that is greater than the aperture of first shale shaker will fall into the second shale shaker, through the screening of second shale shaker, obtains the grit of the particle size that satisfies the user demand, and wherein, the sieve mesh aperture of first shale shaker and second shale shaker can select according to user's actual need.

Preferably, as shown in fig. 1, the dry sand sorting production mechanism 6 comprises a slurry pump 61, a cyclone separator 62, a first multistage vibrating screen 64 and a plurality of dry sand product boxes 66; the feed inlet of sediment stuff pump 61 with first sand washing discharge gate 51 intercommunication, the feed inlet of cyclone 62 with the discharge gate intercommunication of sediment stuff pump 61, the underflow opening of cyclone 62 with the feed inlet intercommunication of first multistage shale shaker 64, it is a plurality of dry sand finished product case 66 respectively with the discharge gate one-to-one intercommunication of first multistage shale shaker 64.

Because the sand and stone after sand washing contain certain moisture, the sand and stone in the first sand washing discharge port and the moisture are pumped into the cyclone separator through the slurry pump, the cyclone separator separates the sand and the moisture, the sand and stone are discharged from the bottom flow port of the cyclone separator, the moisture is discharged from the overflow port of the cyclone separator, the sand and stone discharged from the bottom flow port are finely screened through the first multistage vibrating screen, sand and stone with various particle sizes can be obtained, and then, finished dry sand with various grades can be obtained through a plurality of dry sand finished product boxes which are respectively communicated with the discharge ports of the first multistage vibrating screen in a one-to-one correspondence manner, so that various requirements of users on the sand and stone are met, and the universality is strong; the first multistage vibrating screen is the prior art, and the number of stages can be selected according to the actual needs of a user.

Preferably, as shown in fig. 1, the dry sand sorting production mechanism 6 further comprises a heater 63, and the heater 63 is arranged on a channel between a bottom flow port of the cyclone separator 63 and a feed port of the first multi-stage vibrating screen 64.

Certain moisture is still remained in the grit that discharges through cyclone's underflow opening, through the heater, can carry out the drying to the moisture in the grit and get rid of, improves the quality of finished product dry sand.

Preferably, as shown in fig. 1, the dry sand sorting production mechanism 6 further includes a first dust collector 65, the first dust collector 65 includes a first suction port 651, a first dust suction pipe, and a first dust suction fan, the first suction port 651 is communicated with the first dust suction fan through the first dust suction pipe, and the first suction port 651 is disposed on a side wall of the first multistage vibrating screen 64.

Through setting up the first extraction opening on first multistage shale shaker lateral wall to and first dust absorption pipeline and first dust absorption fan, can take out dust and moisture that grit produced when sieving in first multistage shale shaker, further improve the quality of the dry sand of finished product.

Preferably, as shown in fig. 1, the green sand sorting production mechanism 7 includes a second multistage vibrating screen 71, a water tank 76, and a plurality of finished green sand tanks 78; the feed inlet of the second multistage vibrating screen 71 is communicated with the second sand washing discharge port 52, the discharge ports of the second multistage vibrating screen 71 are respectively communicated with the plurality of wet sand finished product boxes 78 in a one-to-one correspondence manner, and each channel between the discharge port of the second multistage vibrating screen 71 and the corresponding wet sand finished product box 78 is communicated with the water tank 76; and a water measuring and controlling system for measuring the water content of sand and controlling the water adding amount is respectively arranged on each channel between the discharge hole of the second multistage vibrating screen 71 and the water tank 76.

In the process of green sand production, the water content in the sand with various gradations is required to be determined, so that the sand with various gradations is screened out by the second multistage vibrating screen, the water content of the sand with various gradations is respectively measured by the water measuring and controlling system arranged on each channel between the discharge port of the second multistage vibrating screen and the water tank, and the water adding amount of the green sand with various gradations is controlled and produced by the water measuring and controlling system, so that the finished green sand with various gradations is obtained, various requirements of users are met, and the universality is stronger; the second multistage vibrating screen is the prior art, and the stage number of the second multistage vibrating screen can be selected according to the actual needs of a user; wherein, moisture system of observing and controling measures water content and control water feeding volume are prior art, and concrete no longer give unnecessary details, the utility model discloses do not relate to computer program's improvement, for example, moisture sensor, measuring circuit, signal shaping module, controller and solenoid valve control system in patent number CN206710358U "a high accuracy intelligence molding sand moisture system of observing and controlling".

Specifically, first multistage shale shaker and second multistage shale shaker in this embodiment are the shale shaker of three-layer screen cloth configuration, contain bottommost lower layer sieve mesh specification 3mm and follow from up second floor sieve mesh specification 5mm, can sieve the grit of three kinds of particle diameters, are 0 ~ 3mm, 3 ~ 5mm and 5 ~ 10mm respectively. The quantity of dry sand finished product case and wet sand finished product case is three respectively, and moisture measurement system includes three routes, obtains three types of finished product dry sand and three types of finished product wet sand respectively, is respectively: dry sand of type I finished products, dry sand of type II finished products, dry sand of type III finished products, wet sand of type I finished products, wet sand of type II finished products and wet sand of type III finished products.

Preferably, as shown in fig. 1, the moisture measurement and control system includes a moisture sensor 72, a controller 73, a solenoid valve 74 and a water pump 75, the controller 73 is electrically connected to the moisture sensor 73, the solenoid valve 74 and the water pump 75, respectively, and each water pump 75 is communicated with the water tank 76.

The water content in the sand stones screened by the second multistage vibrating screen is sampled by the water content sensor, the water adding amount is obtained by the controller according to the water content and the flow of the electromagnetic valve, and the required water is pumped out from the water tank by the water pump, so that the finished wet sand with various grades is produced.

Specifically, the controller in the embodiment adopts a MCS8051 type single chip microcomputer, the moisture sensor adopts a 296-47774-2-ND type, the moisture in the sand and stone can be measured, the temperature in the sand and stone can also be measured, the electromagnetic valve adopts an SJ2000 type, and the water pump adopts a D25-30x5 type.

Preferably, as shown in fig. 1, the wet sand sorting production mechanism 7 further includes a second dust collector 77, the second dust collector 77 includes a second air suction port 771, a second dust suction duct and a second dust suction fan, the second air suction port 771 is communicated with the second dust suction fan through the second dust suction duct, and the second air suction port 771 is disposed on a side wall of the second multistage vibrating screen 71.

Through setting up the second extraction opening on the multistage shale shaker lateral wall of second to and second dust absorption pipeline and second dust absorption fan, dust and moisture that the grit produced when sieving in first multistage shale shaker can be taken out, thereby make things convenient for follow-up moisture to observe and control the water content of system in to the grit after the screening and carry out the accuracy and measure, the result of observing and controlling is more accurate, thereby further improves the quality of finished product wet sand.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. The dry and wet sand classification washing and sorting device comprises a sand washing tank (1), an impeller (2) and a driving mechanism, wherein the impeller (2) comprises an axle (21) and a plurality of hoppers (22), the impeller (2) is erected in the sand washing tank (1) through the axle (21), the plurality of hoppers (22) are uniformly arranged at intervals along the rotating direction of the outer edge of the axle (21), and the driving mechanism drives the axle (21) to rotate in the sand washing tank (1), and is characterized by further comprising an annular water retaining tank (24) and a plurality of filtering hoppers (23);

each hopper (22) is provided with a first filtering sieve hole along the side wall of the wheel shaft (21) in the length direction, the filtering hoppers (23) are correspondingly arranged along the outer side of the hopper (22) one by one and are parallel to the corresponding hopper (22), each filtering hopper (23) is opposite to the corresponding first filtering sieve hole, each filtering hopper (23) is provided with a second filtering sieve hole along the side wall of the wheel shaft (21) in the length direction, and the annular water retaining groove (24) surrounds the outer side of the filtering hopper (23) and is opposite to all the second filtering sieve holes;

the sand box also comprises a sand box (5), a dry sand sorting production mechanism (6) and a wet sand sorting production mechanism (7);

the sand box (5) is arranged outside the sand washing groove (1) and located in the blanking direction of the hopper (22), a first sand washing discharge hole (51) and a second sand washing discharge hole (52) are formed in the sand box (5), the feed inlet of the dry sand sorting production mechanism (6) is communicated with the first sand washing discharge hole (51), and the feed inlet of the wet sand sorting production mechanism (7) is communicated with the second sand washing discharge hole (52).

2. The wet and dry sand classifying and washing device according to claim 1, wherein the first filter mesh has a larger pore size than the second filter mesh.

3. A dry and wet sand classifying and washing apparatus according to claim 1, further comprising a first vibrating screen (3) and a second vibrating screen (4);

first shale shaker (3) set up in the blanking direction of hopper (22) wash on sand tank (1), second shale shaker (4) set up in wash outside sand tank (1) on sand box (5), just the discharge gate of first shale shaker (3) stretch to wash outside sand tank (1), second shale shaker (4) set up in the discharge gate below of first shale shaker (3), just the discharge gate of second shale shaker (4) stretch to sand box (5).

4. A wet and dry sand classifying and washing apparatus according to claim 3, characterized in that the first vibrating screen (3) and the second vibrating screen (4) are both inclined and height-adjustable.

5. The dry and wet sand classifying and washing device according to claim 1, wherein the dry sand classifying production mechanism (6) comprises a slurry pump (61), a cyclone separator (62), a first multistage vibrating screen (64) and a plurality of dry sand finished boxes (66); the feed inlet of sediment stuff pump (61) with first washed-out sand discharge gate (51) intercommunication, the feed inlet of cyclone (62) with the discharge gate intercommunication of sediment stuff pump (61), the underflow opening of cyclone (62) with the feed inlet intercommunication of first multistage shale shaker (64), it is a plurality of dry sand finished product case (66) respectively with the discharge gate one-to-one intercommunication of first multistage shale shaker (64).

6. The dry and wet sand classifying and washing device according to claim 5, wherein the dry sand classifying production mechanism (6) further comprises a heater (63), and the heater (63) is provided on a passage between a bottom flow port of the cyclone separator (62) and a feed port of the first multistage vibrating screen (64).

7. The wet and dry sand classifying and washing device according to claim 5, wherein the dry sand classifying production mechanism (6) further comprises a first dust collector (65), the first dust collector (65) comprises a first suction port (651), a first dust suction pipe and a first dust suction fan, the first suction port (651) is communicated with the first dust suction fan through the first dust suction pipe, and the first suction port (651) is provided on a side wall of the first multistage vibrating screen (64).

8. The wet and dry sand classifying and washing device according to claim 1, wherein the wet sand classifying production mechanism (7) comprises a second multistage vibrating screen (71), a water tank (76) and a plurality of finished wet sand tanks (78); the feed inlet of the second multistage vibrating screen (71) is communicated with the second sand washing discharge outlet (52), the discharge outlets of the second multistage vibrating screen (71) are respectively communicated with the plurality of wet sand finished product boxes (78) in a one-to-one correspondence manner, and each channel between the discharge outlet of the second multistage vibrating screen (71) and the corresponding wet sand finished product box (78) is communicated with the water tank (76); the discharge gate of second multistage shale shaker (71) with divide equally on every passageway between water tank (76) and be equipped with the moisture system of observing and controling that is used for measuring the water content of grit and control water feeding respectively.

9. The wet and dry sand classification washing device according to claim 8, wherein the moisture measurement and control system comprises a moisture sensor (72), a controller (73), a solenoid valve (74) and a water pump (75), the controller (73) is electrically connected with the moisture sensor (72), the solenoid valve (74) and the water pump (75) respectively, and each water pump (75) is communicated with the water tank (76).

10. The wet and dry sand classifying and washing device according to claim 8, wherein the wet sand classifying production mechanism (7) further comprises a second dust collector (77), the second dust collector (77) comprises a second suction port (771), a second dust suction duct and a second dust suction fan, the second suction port (771) is communicated with the second dust suction fan through the second dust suction duct, and the second suction port (771) is provided on a side wall of the second multistage vibrating screen (71).

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