CN214183990U

CN214183990U - Grit is dried and is sieved device

Info

Publication number: CN214183990U
Application number: CN202022881058.5U
Authority: CN
Inventors: 邓小军; 周雪亮; 其他发明人请求不公开姓名
Original assignee: Chongqing Construction Engineering Building Materials & Logistics Co ltd; Chongqing Construction Engineering Group Co Ltd
Current assignee: Chongqing Construction Engineering Building Materials & Logistics Co ltd; Chongqing Construction Engineering Group Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-09-14
Anticipated expiration: 2030-12-04

Abstract

The utility model relates to the sandstone screening experiment field, in particular to a sandstone drying and screening device, which comprises a drying part, a screening part and a weighing and recovering part; the drying part comprises a drying drum, a heating device and a first turnover mechanism and is used for drying, weighing and transferring the sandstone to the next procedure; the screening part comprises a plurality of layers of screens, a vibration mechanism and a second turnover mechanism and is used for classifying the gravels with different sizes and specifications by the vibration screen and transporting the classified gravels to the next procedure; weigh recovery part including collecting hopper, total collection hopper, collection rotary drum and third tilting mechanism for weigh the grit of screening out categorised, and retrieve the grit after weighing and leave in together. The utility model discloses a can dry and weigh the grit after getting the material to weigh and retrieve sifting out categorised grit, whole screening sand process automation, the efficiency of very big promotion grit screening reduces staff's intensity of labour.

Description

Grit is dried and is sieved device

Technical Field

The utility model relates to a grit screening experiment field, concretely relates to grit stoving screening plant.

Background

The concrete is formed by mixing cement, sand, stones and water according to a proper proportion, pouring and molding, and finally hardening. In order to ensure the quality of concrete, each component material needs to meet certain technical property requirements, wherein the content of the sand accounts for about 65-75% of the volume of the concrete, so the technical property of the sand is detected for measuring whether the quality of the sand meets the requirements of the sand for the concrete. The sieve analysis test is an important test for detecting whether the quality of the sand reaches the standard, and the grain composition and the thickness degree of the sand are important indexes for evaluating the quality of the sand. The grain composition and the thickness degree of the sand are measured by a sieve analysis method, so the sieve analysis test of the sand is important for detecting whether the quality of the sand reaches the standard or not.

In the traditional sand screening experiment, sand is mostly screened manually, the sand needs to be dried before screening, then screens with different screen diameters are used for screening the sand from large to small (in the screening process, the screen with the largest aperture is used for screening the sand with the first specification, the rest of the sand screens are used for screening the sand with the second specification, and the rest of the sand screens are used for continuously screening the sand with the next specification until the screen is used once), and finally the sand on each screen is collected and weighed. However, the artificial sand screening has the following problems: 1. the screening process is complicated, not only is drying carried out before screening, but also screening is carried out by using screens with a plurality of apertures, and the screened and classified gravels need to be weighed respectively, so that the process is complicated; 2. the whole process requires a large amount of labor force, and a large amount of labor is needed for carrying, collecting and weighing the sandstone; 3. the workload is large, the labor efficiency is low, and a sand screening experiment needs to be carried out on every batch of sand. It is therefore desirable to provide an automated sand screening apparatus.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a grit stoving screening plant to solve the problem that screening sand efficiency is lower, staff's work load is big in traditional sand screening experiment, solve the problem that traditional sand screening experiment needs a large amount of staff simultaneously.

In order to solve the technical problem, the utility model discloses a grit stoving screening plant technical means as follows: comprises a drying part, a screening part and a weighing recovery part which are sequentially arranged;

the drying part comprises a drying drum and a first turnover mechanism for turning over the drying drum, the bottom of the drying drum is provided with a motor for driving the drying drum to rotate, and the inner wall of the drying drum is provided with a heating device; electronic scales are arranged at the bottoms of the drying drum and the first turnover mechanism; a control cabinet is arranged below the drying part; the screening part comprises a plurality of layers of screens, a vibration mechanism and a second turnover mechanism, the plurality of layers of screens are composed of a plurality of stacked single-layer screens, the aperture of each single-layer screen is sequentially reduced from top to bottom until the aperture is zero, and a discharge pipe is respectively arranged on the screen wall of each single-layer screen; the lower part of the multilayer screen mesh is fixedly connected to a vibration mechanism, the vibration mechanism is connected with a second turnover mechanism, and the second turnover mechanism drives the multilayer screen mesh and the vibration mechanism to turn over; weigh and retrieve the part including a plurality of collection hoppers and the collection barrel roll that is located the collection hopper below, it is equipped with the collection barrel roll to collect the hopper below, collection barrel roll and third tilting mechanism bottom still are equipped with the electronic scale, the collection barrel roll bottom is equipped with its pivoted motor of drive, third tilting mechanism makes the whole upset of collection barrel roll.

Above-mentioned technical scheme's grit stoving screening plant has following technical advantage: (in the actual working process: 1. firstly, weighed sandstone is added into a drying drum, an electronic scale positioned below the drying drum weighs the sandstone, after the drying drum detects that the sandstone is added into the drum, a heating device in the drying drum and a motor at the bottom of the drying drum are started, the sandstone in the drum is dried while the drying drum rolls, after the drying drum rolls and heats for a few minutes, the moisture of the sandstone in the drum is basically volatilized, the weight of the sandstone is not changed, at the moment, the drying drum stops rotating and heating, and simultaneously, a first turnover mechanism is started, so that the drying drum is turned over towards the direction of a plurality of layers of screens, the sandstone is poured into the plurality of layers of screens, and the whole drying and transferring process of the sandstone is completed; 2, after the sandstone is guided from the upper part of the plurality of layers of screens, the sandstone sequentially passes through the single-layer screens with the largest aperture to the smallest aperture under the action of gravity, meanwhile, the vibration mechanism positioned below the multilayer screen is started, so that gravels on the multilayer screen are vibrated and spread, the screening speed of the multilayer screen is favorably accelerated, after several minutes, the multilayer screen screens screen and sort the gravels, the vibration mechanism stops vibrating, the screened and sorted gravels stand on the single-layer screen of each layer, and then the second turnover mechanism is started, so that the multilayer screen and the vibration mechanism rotate to the horizontal position from the vertical position, and the whole gravel screening, sorting and transferring process is completed; 3. gravel flows into corresponding collecting hoppers from discharging pipes of all layers of the multi-layer screen, after the gravel which is sieved and classified in all layers of the multi-layer screen is poured into respective collecting hoppers, the gravel in a first collecting hopper, a second collecting hopper, a third collecting hopper, a fourth collecting hopper, a fifth collecting hopper, a sixth collecting hopper, a seventh collecting hopper and an eighth collecting hopper are collected by a total collecting hopper at intervals in sequence and finally stored in a collecting roller, the gravel in one collecting hopper is stored in the collecting hopper every time, the collecting hopper and an electronic scale below a third turnover mechanism are weighed and metered once, measurement data are obtained eight times in total, the weight of the corresponding gravel in each collecting hopper is calculated by subtracting the data measured in the previous time from the data measured in the next time, the measurement of the weight of the gravel in all the collecting hoppers is completed, and all the gravel is recovered in the collecting roller below the total collecting hopper, when the grit in the cylinder is cleared up to needs to be collected, start the third tilting mechanism and pour out can. ) The whole screening working process of the utility model is divided into three sub-processes of drying and weighing, screening and classifying, weighing after screening and recovering, and each sub-process is more efficient than the traditional manual work; a drying and weighing sub-process: the weighed sand stones are added into the drying hopper, the drying drum can be used for heating and rotating to dry the sand stones at the same time, and the drying effect is good and the drying speed is high; a screening and classifying sub-process: the sand and stone are sequentially subjected to vibration screening through the single-layer screens from large to small, the screening effect is good, the screening efficiency is high, each layer of screen is provided with the discharge pipe, and the discharge speed is obviously improved compared with the conventional manual one-time discharge; weighing respectively after screening and recycling the sub-processes: can weigh the categorised grit of screening simultaneously, obtain the quality of all kinds of grit, improve the efficiency of weighing greatly, can also retrieve the collection to the grit after weighing, the recovery processing grit of being convenient for reduces the trouble that follow-up grit was handled.

Preferably, in order to fixedly mount the drying drum, an L-shaped metal plate is arranged below the drying drum, the L-shaped metal plate is fixedly connected with a motor at the bottom of the drying drum, and the first turnover mechanism drives the drying drum to rotate through the L-shaped metal plate; an L-shaped metal plate is also arranged below the collecting roller.

Preferably, be provided with on multilayer screen cloth with first collection hopper, second collection hopper, third collection hopper, fourth collection hopper, fifth collection hopper, sixth collection hopper, seventh collection hopper, the first row of material pipe that eighth collection hopper corresponds, the second is arranged the material pipe, the third is arranged the material pipe, the fourth is arranged the material pipe, the fifth is arranged the material pipe, the sixth is arranged the material pipe, the seventh is arranged the material pipe, the eighth is arranged the material pipe, can shift the grit that the screening is categorised to next process simultaneously and weigh, can improve the efficiency that the screening was weighed greatly.

Preferably, in order to prevent sand from spilling out during vibration screening, a plurality of discharge pipes are obliquely and upwardly arranged on the multilayer screen.

Preferably, be provided with the bottom surface of slope on first collection hopper, second collection hopper, third collection hopper, fourth collection hopper, fifth collection hopper, sixth collection hopper, seventh collection hopper, the eighth collection hopper, can make the grit be convenient for flow out collection hopper under the effect of gravity, prevent that the grit from remaining in collecting the hopper.

Preferably, in order to facilitate the collection of the sand in the plurality of collecting hoppers, a collecting hopper for collecting the sand is provided below the plurality of collecting hoppers.

Preferably, in order to better heat the inside of the drying drum, a heating device in the form of a heating resistance wire, a heating cylinder, a heating plate, or the like is provided.

Preferably, be provided with the hopper that is used for accepting the stoving rotary drum feeding uppermost at the multilayer screen cloth, can make things convenient for the grit to pour into the multilayer screen cloth, can effectively prevent simultaneously that the grit from spilling when pouring into the multilayer screen cloth.

Drawings

Fig. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the present invention showing another aspect;

fig. 3 is a front view of the present invention;

fig. 4 is a top view of the present invention;

FIG. 5 is a schematic view of the screen of the present invention in a partially inverted configuration to a horizontal position;

fig. 6 is a schematic view of the screen of the present invention in another direction when the screen is turned to the horizontal position.

The main reference symbols in the drawings are as follows:

1. drying the drum; 2. a first turnover mechanism;

3. a plurality of layers of screens; 4. a vibration mechanism; 5. a second turnover mechanism; 31. a first discharging pipe; 32. a second discharge pipe; 33. a third discharge pipe; 34. a fourth material pipe; 35. a fifth discharge pipe; 36. a sixth discharge pipe; 37. a seventh discharge pipe; 38. an eighth discharge pipe;

6. a collecting hopper; 7. a total collection hopper; 8. collecting the rotary drum; 9. a third turnover mechanism; 10. a control cabinet; 61. a first collection hopper; 62. a second collection hopper; 63. a third collection hopper; 64. a fourth collection hopper; 65. a fifth collection hopper; 66. a sixth collection hopper; 67. a seventh collecting hopper; 68. an eighth collection hopper.

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.

As shown in figures 1 and 2, the sand drying and screening device comprises a drying part, a screening part and a weighing and recycling part which are sequentially arranged from left to right, and the heights of the drying part, the screening part and the weighing and recycling part are sequentially reduced.

The drying part comprises a drying roller 1 and a first turnover mechanism 2, an L-shaped metal plate is arranged below the drying roller 1, a motor at the bottom of the drying roller 1 is fixed on the L-shaped metal plate, and the first turnover mechanism 2 drives the drying roller 1 to rotate through the L-shaped metal plate; the bottom of the drying drum 1 is provided with a motor, the drying drum 1 can roll, the first turnover mechanism 2 can enable the drying drum 1 to turn over integrally and is used for pouring out sand, the inner wall of the drying drum 1 is provided with an electric heating device, the heating device can be a heating resistance wire, a heating cylinder, a heating plate and the like, and the heating temperature of the heating device is controlled to be 105 +/-5 ℃; in the embodiment, the first turnover mechanism 2 adopts a stepping motor to sequentially drive a gear, a shaft and an L-shaped metal plate to turn over the drying drum 1, and the first turnover mechanism is preferably a heating cylinder in the embodiment; a control cabinet 10 is installed below the drying part.

The screening part comprises a plurality of layers of screens 3, a vibrating mechanism 5 and a second turnover mechanism 5, wherein a quadrangular frustum pyramid-shaped feed hopper is arranged at the uppermost part of each layer of screens 3, four fixed guide rails are preferably arranged at the periphery of each layer of screens 3, a connecting lug is preferably arranged between each layer of single-layer screen and each fixed guide rail, each layer of screens 3 consists of a plurality of stacked single-layer screens, the aperture of each single-layer screen is sequentially reduced from top to bottom, the aperture of each single-layer screen is zero, and a screen wall of each single-layer screen is respectively provided with a discharge pipe; a vibration mechanism 4 is fixedly connected below the multi-layer screen 3, the vibration mechanism 4 is connected with a second turnover mechanism 5, and the second turnover mechanism 5 can drive the multi-layer screen 3 and the vibration mechanism 4 to turn over together; in the embodiment, the multilayer screen is preferably eight layers, eight screens are provided in total, each single layer screen is preferably a square hole screen, and the nominal diameter of each layer of screen hole of the multilayer screen is respectively 5mm, 2.5mm, 1.25mm, 630 μm, 315 μm, 160 μm, 80 μm and 0mm (without holes, replaced by round plates) from top to bottom.

The weighing and recycling part comprises a collecting hopper 6, a total collecting hopper 7, a collecting roller 8 and a third turnover mechanism 9, wherein the total collecting hopper 7 is arranged below the collecting hopper; a collecting roller 8 is arranged below the collecting hopper 6, a motor is arranged at the bottom of the collecting roller 8 and can drive the collecting roller 8 to roll, and a third turnover mechanism 9 can turn over the collecting roller 8 integrally and is used for pouring out the gravel; electronic scales are arranged at the bottoms of the collecting drum 8 and the third turnover mechanism 9; an L-shaped metal plate is also arranged below the collecting roller 8.

As shown in fig. 3, the discharge pipes are, in order from top to bottom, a first discharge pipe 31, a second discharge pipe 32, a third discharge pipe 33, a fourth discharge pipe 34, a fifth discharge pipe 35, a sixth discharge pipe 36, a seventh discharge pipe 37, and an eighth discharge pipe 38.

As shown in fig. 4, the collection hoppers are divided into a first collection hopper 61, a second collection hopper 62, a third collection hopper 63, a fourth collection hopper 64, a fifth collection hopper 65, a sixth collection hopper 66, a seventh collection hopper 67 and an eighth collection hopper 68, each collection hopper 6 is provided with an inclined bottom surface, and a gate for discharging sand and stone on the bottom surface is controlled to be closed by a motor or a solenoid valve, preferably a solenoid valve in this embodiment.

As shown in fig. 5 and 6, when the second turnover mechanism 5 drives the multi-layer screen 3 and the vibration mechanism 4 to turn over from the vertical direction to the horizontal direction, the first discharge pipe 31, the second discharge pipe 32, the third discharge pipe 33, the fourth discharge pipe 34, the fifth discharge pipe 35, the sixth discharge pipe 36, the seventh discharge pipe 37, and the eighth discharge pipe 38 correspond to the first collecting hopper 61, the second collecting hopper 62, the third collecting hopper 63, the fourth collecting hopper 64, the fifth collecting hopper 65, the sixth collecting hopper 66, the seventh collecting hopper 67, and the eighth collecting hopper 68, respectively.

The electronic scales generally select common electronic scales on the market, and the quantity of the collecting hopper, the discharging pipe and the screen wall can be adjusted according to actual use needs, so long as the one-to-one correspondence relation is met.

To sum up, the utility model discloses divide into the screening process and dry and weigh, screen classification, weigh separately and retrieve three process after the screening, effectual when drying, fast, effectual, screening efficiency is high during the screening, and screening is categorised row of material is fast moreover, can also realize weighing after the grit screening is categorised, reduce row's material and weigh the time, can also retrieve the collection to the grit after weighing, compare in traditional manual work sieve grit, the improvement is showing in efficiency, the staff has been reduced, the intensity of labour of staff has also greatly reduced simultaneously.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a grit stoving screening plant which characterized in that: comprises a drying part, a screening part and a weighing recovery part which are sequentially arranged;

the drying part comprises a drying drum and a first turnover mechanism for turning over the drying drum, the bottom of the drying drum is provided with a motor for driving the drying drum to rotate, and the inner wall of the drying drum is provided with a heating device; electronic scales are arranged at the bottoms of the drying drum and the first turnover mechanism; a control cabinet is arranged below the drying part;

the screening part comprises a plurality of layers of screens, a vibration mechanism and a second turnover mechanism, the plurality of layers of screens are composed of a plurality of stacked single-layer screens, the aperture of each single-layer screen is sequentially reduced from top to bottom until the aperture is zero, and a discharge pipe is respectively arranged on the screen wall of each single-layer screen; the lower part of the multilayer screen mesh is fixedly connected to a vibration mechanism, the vibration mechanism is connected with a second turnover mechanism, and the second turnover mechanism drives the multilayer screen mesh and the vibration mechanism to turn over;

weigh and retrieve the part including a plurality of collection hoppers and the collection barrel roll that is located the collection hopper below, it is equipped with the collection barrel roll to collect the hopper below, collection barrel roll and third tilting mechanism bottom are equipped with the electronic scale, the collection barrel roll bottom is equipped with its pivoted motor of drive, third tilting mechanism makes the whole upset of collection barrel roll.

2. The sand drying and screening device according to claim 1, characterized in that: an L-shaped metal plate is arranged below the drying drum, a motor at the bottom of the drying drum is fixed on the L-shaped metal plate, and the first turnover mechanism drives the drying drum to rotate through the L-shaped metal plate; an L-shaped metal plate is also arranged below the collecting roller.

3. The sand drying and screening device according to claim 1, characterized in that: the material discharging pipe is sequentially divided into a first material discharging pipe, a second material discharging pipe, a third material discharging pipe, a fourth material discharging pipe, a fifth material discharging pipe, a sixth material discharging pipe, a seventh material discharging pipe and an eighth material discharging pipe from top to bottom.

4. The sand drying and screening device according to claim 1, characterized in that: the plurality of collecting hoppers are respectively a first collecting hopper, a second collecting hopper, a third collecting hopper, a fourth collecting hopper, a fifth collecting hopper, a sixth collecting hopper, a seventh collecting hopper and an eighth collecting hopper.

5. The sand drying and screening device according to claim 1, characterized in that: and a total collecting hopper is arranged below the collecting hoppers.

6. The sand drying and screening device according to claim 3, characterized in that: second tilting mechanism drives multilayer screen cloth and vibration mechanism and turns over the horizontal direction from vertical direction, first row of material pipe, second row of material pipe, third row of material pipe, fourth row of material pipe, fifth row of material pipe, sixth row of material pipe, seventh row of material pipe, eighth row of material pipe correspond first collection hopper, second collection hopper, third collection hopper, fourth collection hopper, fifth collection hopper, sixth collection hopper, seventh collection hopper, eighth collection hopper respectively.

7. The sand drying and screening device according to claim 1, characterized in that: when the multilayer screen is vertically placed, the discharge pipes are arranged obliquely upwards.

8. The sand drying and screening device according to claim 1, characterized in that: the collecting hoppers are provided with inclined bottom surfaces, sand and stone outlet doors are arranged on the bottom surfaces, and the sand and stone outlet doors are controlled by motors or electromagnetic valves.

9. The sand drying and screening device according to claim 1, characterized in that: the heating device is a heating resistance wire, a heating cylinder or a heating plate.

10. The sand drying and screening device according to claim 1, characterized in that: and a hopper for receiving the feeding of the drying drum is arranged at the uppermost part of the multi-layer screen.