CN217458049U

CN217458049U - Aggregate production system

Info

Publication number: CN217458049U
Application number: CN202220740496.6U
Authority: CN
Inventors: 王彦; 郭文晋; 冯志军; 田根; 程建峰
Original assignee: Wuxue Changjiang Mining Co ltd
Current assignee: Wuxue Changjiang Mining Co ltd
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2022-09-20
Anticipated expiration: 2032-04-01

Abstract

The utility model discloses a production system of aggregate belongs to aggregate production technical field. The system comprises a crushing device, a screening device and a plurality of bins, wherein part of outlets of the screening device are connected with the corresponding bins through a conveying belt and/or a common chute, and the rest discharge ports are connected with the corresponding bins through a dedusting chute and a conveying belt in sequence; the dust removal chute is of an obliquely arranged closed gallery structure, the inner bottom of the dust removal chute is provided with a chute, the lower side of the dust removal chute is provided with a plurality of air blowing cavities, and the upper side of the dust removal chute is provided with a dust hood; a plurality of sliding plates are arranged on the chute and positioned at the air blowing cavity; the upper end and two sides of the sliding plate are fixed on the chute, and a through hole is arranged on the sliding plate; a vent hole communicated with the blast cavity is formed in the bottom of the chute and between two adjacent sliding plates, an air outlet of the blast cavity is communicated with the bottom of the chute, and blast inlets of the plurality of blast cavities are connected with an air blower through pipelines; the air inlet of the dust hood is communicated with the upper side of the dust removal chute, and the dust outlet of the dust hood is connected with the bag type dust collector.

Description

Aggregate production system

Technical Field

The utility model belongs to the technical field of the aggregate production, in particular to production system of aggregate.

Background

The aggregate is a granular material which plays a role in skeleton and filling in concrete and mortar. There are two kinds of fine aggregate and coarse aggregate. The fine aggregate has a particle diameter of 0.16-5mm, and natural sand such as river sand, sea sand, and valley sand is generally used, and when natural sand is lacked, artificial sand ground by hard rock can be used; the coarse aggregate has a particle diameter of more than 5mm, and is commonly used with crushed stone. The crushed stone is made of natural rock or rock through mechanical crushing and sieving. In the prior art, the screened aggregate is conveyed to a corresponding bin through a conveying belt and/or a common chute. The screened aggregate also contains a small amount of stone powder, and the smaller the particle of the aggregate is, the higher the stone powder content is (can reach more than 1%). The stone powder in the aggregate can raise dust in the processes of loading, transporting and the like, and is not environment-friendly.

Disclosure of Invention

In order to solve the problem, the embodiment of the utility model provides a production system of aggregate, some aggregates are carried through the dust removal chute of specific structure, realize detaching the mountain flour at the in-process of carrying. The technical scheme is as follows:

the embodiment of the utility model provides an aggregate production system, which comprises a crushing device, a screening device and a plurality of storage bins, wherein a discharge port of the crushing device is connected with a feed port of the screening device through a conveying belt; part of outlets of the screening device are connected with corresponding bins through a conveyer belt and/or a common chute, and the rest discharge ports are connected with the corresponding bins through a dedusting chute 1 and the conveyer belt in sequence; the dust removal chute 1 is of an obliquely arranged closed gallery structure, the inner bottom of the dust removal chute is provided with a chute 2 along the direction of the dust removal chute, the lower side of the dust removal chute is provided with a plurality of air blowing cavities 3 in parallel along the direction of the dust removal chute, and the upper side of the dust removal chute is provided with a dust hood 4 opposite to the plurality of air blowing cavities 3; a plurality of sliding plates 5 are arranged on the chute 2 and positioned in the air blowing cavity 3 side by side along the direction of the air blowing cavity; the upper end and two sides of the sliding plate 5 are fixed on the chute 2 and are obliquely arranged downwards, and through holes through which conveyed aggregates can not pass and stone powder can pass are formed in the sliding plate; a vent hole communicated with the air blowing cavity 3 is formed in the bottom of the chute 2 and between two adjacent sliding plates 5, an air outlet of the air blowing cavity 3 is fixed on the lower side of the dust removal chute 1 and is communicated with the bottom of the chute 2, and air blowing inlets 6 of the air blowing cavities 3 are connected with an air blower through pipelines; the air inlet of the dust hood 4 is fixed on the upper side of the dust removal chute 1 and is communicated with the dust removal chute 1, and the dust outlet 7 of the dust hood is connected with the bag type dust collector through a pipeline with a fan.

Specifically, the discharge ports of the front M-level and the rear N-level of the screening device in the embodiment of the utility model are connected with the corresponding stock bins through the conveyer belt and/or the common chute, and the rest discharge ports are connected with the corresponding stock bins through the dedusting chute 1 and the conveyer belt in sequence; m is 2 or 3, and N is 1 or 2 or 3.

Furthermore, the blast cavity 3 in the embodiment of the utility model is provided with a mesh plate 8 which can not pass stone powder to divide the blast cavity into two cavities, and the bottom of the blast cavity is provided with an openable access hole 9 at one side of the mesh plate 8 close to the dust removal chute 1; the two cavities are arranged side by side along the conveying direction of the gas.

Further, a supporting beam or a supporting plate is arranged between the lower side of the sliding plate 5 and the bottom of the chute 2 and between two adjacent sliding plates 5.

Specifically, the air blowing cavity 3 in the embodiment of the utility model is arranged at the middle part or the lower part of the dust removal chute 1; the dust hood 4 is arranged in the middle and the lower part of the dust removal chute 1 and is a horn mouth with a small upper part and a big lower part; the dust outlet 7 is arranged at the top of the bell mouth.

Preferably, the lower end of the sliding plate 5 in the embodiment of the present invention is provided with a plurality of notches through which the aggregates can pass side by side.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the embodiment of the utility model provides a production system of aggregate, partial aggregate are carried through the dust removal elephant trunk of specific structure, realize detaching the mountain flour at the in-process of carrying, can reduce the content of mountain flour to below 0.8%, and especially better to the effect of coarse aggregate (especially the aggregate more than 10mm, mountain flour content can reduce to below 0.5%).

Drawings

Fig. 1 is a schematic block diagram of a system for producing aggregate in an embodiment of the present invention;

FIG. 2 is a schematic structural view of a dust removal chute.

In the figure: the dust removal device comprises a dust removal chute 1, a chute 2, an air blowing cavity 3, a dust hood 4, a sliding plate 5, an air blowing inlet 6, a dust outlet 7, a screen plate 8 and an inspection hole 9.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1-2, the embodiment of the utility model provides a production system of aggregate, this system include breaker, screening plant and a plurality of feed bin etc. breaker's discharge gate passes through the conveyer belt and is connected with screening plant's feed inlet, and screening plant's first 1 grade discharge gate accessible returning charge belt is connected with breaker. The foregoing structure is substantially the same as that of the existing aggregate production system, except that: part of the outlets of the screening devices in this embodiment (fine aggregate (the dedusting effect of the dedusting chute 1 is poor or no dedusting (such as the last level 1)) and coarse aggregate (the stone powder content is not high, such as the stone powder content of 20-30mm aggregate is less than 0.7%)) are connected with the corresponding bins through the conveyer belt and/or the common chute, and the rest of the outlets are connected with the corresponding bins through the dedusting chute 1 and the conveyer belt in sequence to separate part of dust in the conveying process. Wherein, the closed corridor structure that dust removal chute 1 set up (inclination will guarantee that the aggregate can well be carried) for the slope, the bottom is equipped with chute 2 (the surface is smooth, is best made by wear-resisting material) along the direction at its place in its, and its downside is equipped with a plurality of blast chambers 3 side by side along the direction at its place (the interval sets up the transport speed in order to guarantee the aggregate, and then guarantees to carry smoothly), and its upside just is equipped with a suction hood 4 (can take away the dust that blast chamber 3 blew off) to a plurality of blast chambers 3. The chute 2 is provided with a plurality of sliding plates 5 (made of wear-resistant materials) in parallel along the direction of the blast cavity 3. The upper end and two sides of the sliding plate 5 are fixed on the chute 2 (bottom and two sides), the sliding plate is obliquely arranged downwards (the included angle between the sliding plate and the chute 2 is preferably less than or equal to 30 degrees), through holes (a plurality of through holes are uniformly distributed) are arranged on the sliding plate, the aggregate cannot pass through the through holes, and the stone powder can pass through the through holes, and the lower end of the sliding plate extends to the middle of the chute 2. The aggregates roll down along the sliding plate 5 and form a curtain at the lower end of the sliding plate 5, and dust is carried to the dust hood 4 by wind in the process of rolling down the aggregates 5 and forming the curtain. And a vent hole communicated with the blast cavity 3 is arranged at the bottom of the chute 2 and between two adjacent sliding plates 5, and the vent hole is preferably positioned above the lower end of the corresponding curtain. The air outlet of the air blowing cavity 3 is fixed at the lower side of the dust removal chute 1 and communicated with the bottom of the chute 2, and the air blowing inlets 6 of the air blowing cavities 3 are connected with an air blower through pipelines. The air inlet of the dust hood 4 is fixed on the upper side of the dust removal chute 1 and is communicated with the dust removal chute 1, and the dust outlet 7 of the dust hood is connected with the bag type dust collector through a pipeline with a fan so as to carry out dust treatment.

Specifically, the embodiment of the utility model provides an in the screening plant before M level and the discharge gate of back N level pass through conveyer belt and/or ordinary elephant trunk and be connected with the feed bin that corresponds, its remaining discharge gate loops through dust removal elephant trunk 1 and conveyer belt and is connected with the feed bin that corresponds. M is 2 or 3 (grade 1 can be used as return material) and N is 1 or 2 or 3 (at least the aggregate of the last grade 1 does not need to be treated). Specifically, aggregates having a particle size of 10 to 30 are conveyed by the dust removal chute 1.

Further, referring to fig. 2, in the air blowing chamber 3 of the embodiment of the present invention, a mesh plate 8 (preferably, cleaned by the access hole 9) through which the stone powder cannot pass is disposed to divide the air blowing chamber into two chambers, and an openable access hole 9 (capable of opening the dust to clean up periodically) is disposed at one side of the bottom of the mesh plate 8 close to the dust removal chute 1. The two cavities are arranged side by side along the conveying direction of the gas.

Further, a support beam or support plate (on which a vent hole may be provided) is provided between the lower side of the sliding plate 5 and the bottom of the chute 2 and between two adjacent sliding plates 5.

Specifically, referring to fig. 2, the blast chamber 3 in the embodiment of the present invention is provided in the middle or lower part of the dust removal chute 1 (to ensure a high speed of the aggregate). The dust hood 4 is arranged at the middle part and the lower part of the dust removal chute 1 and is a horn mouth (arranged vertically) with a small upper part and a big lower part. The dust outlet 7 is arranged at the top of the bell mouth.

Preferably, the lower end of the sliding plate 5 in the embodiment of the present invention is provided with a plurality of notches through which aggregate can pass side by side, and the notches are specifically U-shaped notches.

The dust removal effect of the dust removal chute 1 disclosed in this example was verified as follows, and the results are shown in table 1:

TABLE 1

Aggregate material	5-10mm	10-20mm	20-30mm
				Stone powder content before treatment	1.07%	0.81%	0.64%
Stone powder content after treatment	0.92%	0.33%	0.31%

As can be seen from the above table, the dust removal chute in the embodiment has a general dust removal effect on the small-particle aggregates, and the large-particle aggregates have a low dust content and can be basically processed without treatment.

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

1. The aggregate production system comprises a crushing device, a screening device and a plurality of bins, wherein a discharge hole of the crushing device is connected with a feed hole of the screening device through a conveying belt; the device is characterized in that part of outlets of the screening device are connected with corresponding bins through a conveyer belt and/or a common chute, and the rest discharge ports are connected with the corresponding bins through a dedusting chute (1) and the conveyer belt in sequence;

the dust removal chute (1) is of an obliquely arranged closed gallery structure, the inner bottom of the dust removal chute is provided with a chute (2) along the direction of the dust removal chute, the lower side of the dust removal chute is provided with a plurality of air blowing cavities (3) side by side along the direction of the dust removal chute, and a dust hood (4) is arranged on the upper side of the dust removal chute and is opposite to the plurality of air blowing cavities (3); a plurality of sliding plates (5) are arranged on the chute (2) and positioned in the air blowing cavity (3) side by side along the direction of the air blowing cavity; the upper end and two sides of the sliding plate (5) are fixed on the chute (2) and are obliquely arranged downwards, and through holes through which conveyed aggregates can not pass and stone powder can pass are formed in the sliding plate; a vent hole communicated with the air blowing cavity (3) is formed in the bottom of the chute (2) and between two adjacent sliding plates (5), an air outlet of the air blowing cavity (3) is fixed on the lower side of the dust removal chute (1) and is communicated with the bottom of the chute (2), and air blowing inlets (6) of the air blowing cavities (3) are connected with an air blower through pipelines; the air inlet of the dust hood (4) is fixed at the upper side of the dust removal chute (1) and communicated with the dust removal chute (1), and the dust outlet (7) of the dust hood is connected with the bag type dust collector through a pipeline with a fan.

2. The aggregate production system according to claim 1, wherein the discharge outlets of the front M-level and the rear N-level of the screening device are connected with corresponding bins through a conveyer belt and/or a common chute, and the remaining discharge outlets are connected with the corresponding bins through a dedusting chute (1) and a conveyer belt in sequence; m is 2 or 3, and N is 1 or 2 or 3.

3. The aggregate production system according to claim 1, wherein a mesh plate (8) which cannot pass stone powder is arranged in the blast cavity (3) to divide the blast cavity into two cavities, and an openable access hole (9) is formed in the bottom of the mesh plate (8) and positioned on one side of the mesh plate (8) close to the dedusting chute (1); the two cavities are arranged side by side along the conveying direction of the gas.

4. A system for the production of aggregate according to claim 1, characterized in that support beams or plates are provided between the underside of the sliding plate (5) and the bottom of the chute (2) and between two adjacent sliding plates (5).

5. The aggregate production system according to claim 1, wherein the blast chamber (3) is provided in the middle or lower part of the dust removal chute (1); the dust hood (4) is arranged in the middle and the lower part of the dust removal chute (1) and is a horn mouth with a small upper part and a big lower part; the dust outlet (7) is arranged at the top of the bell mouth.

6. A system for producing aggregate according to claim 1, wherein the lower end of the slide plate (5) is provided with a plurality of notches through which aggregate can pass side by side.