CN221245549U

CN221245549U - Device capable of adjusting fineness modulus of machine-made sand

Info

Publication number: CN221245549U
Application number: CN202322819705.3U
Authority: CN
Inventors: 袁怡琳
Original assignee: Nanchang Mineral Systems Group Co Ltd
Current assignee: Nanchang Mineral Systems Group Co Ltd
Priority date: 2023-10-20
Filing date: 2023-10-20
Publication date: 2024-07-02
Anticipated expiration: 2033-10-20

Abstract

The utility model discloses a device capable of adjusting fineness modulus of machine-made sand, which comprises a sand making machine and two layers of screening machines, wherein a discharge hole of the sand making machine is connected with a feed inlet of the two layers of screening machines, an undersize chute and an adjustable chute are arranged on the two layers of screening machines, a first outlet, a second outlet and a third outlet are arranged in the adjustable chute, the first outlet and the second outlet are connected with the feed inlet of the sand making machine, the bottom of the third outlet is connected with an electric rotary valve, a blanking pipe is arranged at the bottom of the undersize chute, the electric rotary valve is connected with the blanking pipe, and a dust removing mechanism is arranged at the bottom of the blanking pipe.

Description

Device capable of adjusting fineness modulus of machine-made sand

Technical Field

The utility model relates to the technical field of sand making equipment, in particular to a device capable of adjusting fineness modulus of machine-made sand.

Background

With the rapid development of the age, the development of the basic construction industry in China is rapid, and sand is the main component of concrete, which is an indispensable raw material in the construction industry. The depletion of natural sand is caused by the large amount of sand required for capital construction projects. In order to meet the demand of the building industry for sand and stone, machine-made sand appears in the field of public view, and many enterprises begin to research and design sand making buildings for producing high-quality machine-made sand so as to meet the demand of engineering construction for sand and stone. The fineness modulus is an index representing the fineness degree and class of the grain diameter of the natural sand, and the larger the fineness modulus is, the coarser the sand is. The sand is divided into coarse, medium and fine specifications according to fineness modulus.

The company applies for an 'on-line quantitative adjustment device for the fineness modulus of machine-made sand' in 2022, however, in the long-time sand making use process, the gate valve adopted in the device is exposed due to the sliding rail, sand particles are smaller and easy to enter the sliding rail, so that the gate valve is clamped, and materials are pressed on the gate valve, so that the gate valve is not adjusted, the fineness modulus of the machine-made sand cannot be adjusted, and the sand making specification of the machine-made sand is not met;

Therefore, how to design a device capable of adjusting the fineness modulus of the machine-made sand becomes a problem which we need to solve currently.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a device capable of adjusting the fineness modulus of machine-made sand, which solves the problem that the fineness modulus of the machine-made sand cannot be adjusted due to the fact that a gate valve is easy to be clamped by sand.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an adjustable mechanism sand fineness modulus's device, includes sand making machine and two-layer screening machine, and the pan feeding mouth of two-layer screening machine is connected to the discharge gate of sand making machine, be equipped with sifting chute and adjustable chute on the two-layer screening machine, be equipped with first export, second export and third export in the adjustable chute, first export and second exit linkage sand making machine pan feeding mouth, electric rotary valve is connected to third export bottom, and sifting chute bottom sets up the unloading pipe, and electric rotary valve connects the unloading pipe, and unloading pipe bottom is equipped with dust removal mechanism.

Further, an opening is further arranged in the adjustable chute, and the opening is arranged at the tops of the second outlet and the third outlet and is communicated with the second outlet and the third outlet.

Further, the electric rotary valve comprises a valve body, blades are arranged inside the valve body and driven by a stepping motor fixed on the outer side of the valve body, a feeding hole of the valve body is connected with a third outlet, and a discharging hole of the valve body is connected with a discharging pipe.

Further, the dust removing mechanism comprises a dust removing box connected to the bottom of the blanking pipe, a dust collecting bin is arranged on one surface of the dust removing box, a blower is arranged on the opposite surface of the dust collecting bin on the dust removing box, a dust screening net is arranged at the joint of the dust collecting bin and the dust removing box, a protective net is arranged between the dust removing box and the blower, and a cloth bag dust remover is connected to a discharge port at the bottom of the dust collecting bin.

Further, a plurality of vibrators are arranged on the screen ash screen.

Further, a splitter plate is fixed in the dust removal box through a fixing rod, the splitter plate is positioned at the top of the protective net, and the cross section of the splitter plate is in a V shape.

Compared with the prior art, the utility model has the following beneficial effects: the utility model controls the feeding amount of the second screen into the finished product material pile by adjusting the speed of the electric rotary valve, can realize online, flexible and accurate adjustment of fineness modulus, has lower manufacturing cost, maximizes the value of the sand making building, meets more customer demands and effectively improves the economic benefit of enterprises; through set up the opening in adjustable chute can make the pan feeding throughput be greater than the delivery volume of electric rotary valve and cause the time to get rid of the long-pending material when the long-pending material of third export, avoid the long-pending material to cause whole equipment to shut down and influence production efficiency, can carry out dust removal work to the mechanism sand after adjusting fineness modulus through dust removal mechanism, improve the quality of finished product mechanism sand.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic view of a two-deck sifter of the present utility model.

FIG. 3 is a schematic view of the internal structure of the adjustable chute of the present utility model.

FIG. 4 is a schematic diagram of an electrically operated rotary valve according to the present utility model.

Fig. 5 is a schematic view of a blade structure according to the present utility model.

Fig. 6 is a schematic structural diagram of a dust removing mechanism of the present utility model.

Fig. 7 is a schematic side view of the dust removing box of the present utility model.

In the figure: 1. feeding materials; 2. a sand making machine; 3. two layers of screening machines; 4. an adjustable chute; 41. a first outlet; 42. an opening; 43. a second outlet; 44. a third outlet; 5. an electric rotary valve; 51. a stepping motor; 52. a blade; 53. a valve body; 6. a finished product pile; 7. feeding through a sieve; 8. feeding a second layer of screen; 9. screening and blanking; 10. sieving an under-sieve chute; 11. discharging pipes; 12. a dust removal box; 13. a dust collection bin; 14. a dust screen; 15. a blower; 16. a protective net; 17. a fixed rod; 18. a diverter plate; 19. a vibrator; 20. a bag-type dust collector.

Detailed Description

Referring to fig. 1-5, the present utility model provides the following technical solutions: the utility model discloses a device capable of adjusting the fineness modulus of machine-made sand, which comprises a sand making machine 2 and two layers of screening machines 3, wherein a discharge hole of the sand making machine 2 is connected with a feed inlet of the two layers of screening machines 3, an undersize chute 10 and an adjustable chute 4 are arranged on the two layers of screening machines 3, a first outlet 41, a second outlet 43 and a third outlet 44 are arranged in the adjustable chute 4, the first outlet 41 and the second outlet 43 are connected with the feed inlet of the sand making machine 2, the bottom of the third outlet 44 is connected with an electric rotary valve 5, a blanking pipe 11 is arranged at the bottom of the undersize chute 10, the electric rotary valve 5 is connected with the blanking pipe 11, and a dust removing mechanism is arranged at the bottom of the blanking pipe 11.

The adjustable chute 4 is internally provided with an opening 42, the opening 42 is arranged at the tops of the second outlet 43 and the third outlet 44 and is communicated with the second outlet 43 and the third outlet 44, and the feeding throughput can be enabled to be greater than that of the third outlet 44 when the conveying capacity of the electric rotary valve 5 is larger than that of the third outlet 44 by arranging the opening 42 in the adjustable chute 4, so that accumulated materials are removed in time, and the phenomenon that the whole equipment is stopped due to the accumulated materials to affect the production efficiency is avoided.

The electric rotary valve 5 comprises a valve body 53, wherein blades 52 are arranged in the valve body 53, the blades 52 are driven by a stepping motor 51 fixed on the outer side of the valve body 53, a feeding hole of the valve body 53 is connected with the third outlet 44, and a discharging hole of the valve body 53 is connected with the discharging pipe 11.

Work flow for modulus adjustment of machine-made sand fineness: when the sand making machine is used, the incoming material 1 is crushed by the sand making machine 2 and then enters the two layers of screening machines 3, the two layers of screening machines 3 can divide the crushed material into three materials with different particle diameters, namely screen feeding 7, second layers of screen feeding 8 and screen discharging 9, the screen discharging 9 directly enters the finished product material pile 6 through the screen discharging chute 10, the screen feeding 7 enters the sand making machine 2 through the first outlet 41 for circular crushing, the second layers of screen feeding 8 enters the electric rotary valve 5 through the third outlet 44, the stepping motor 51 in the electric rotary valve 5 drives the blade 52 to rotate, the rotating speed of the stepping motor 51 driving the blade 52 is controlled to control the quantity of the second layers of screen feeding 8 entering the finished product material pile 6, and further the fineness modulus of the finished product sand is adjusted; when the throughput of the second-layer screen feeding 8 is larger than the conveying capacity of the electric rotary valve 5, the second-layer screen feeding 8 overflows from the opening 42, enters the second outlet 43, and finally flows into the sand making machine 2 from the second outlet 43 for circular crushing.

Wherein, dust removal mechanism is including connecting in the dust collection box 12 of unloading pipe 11 bottom, and the one side of dust collection box 12 is equipped with dust collection bin 13, and the one side that is in dust collection bin 13 opposite on the dust collection box 12 is equipped with air-blower 15, and dust collection bin 13 and dust collection box 12 junction is equipped with the sieve ash net 14, is equipped with protection network 16 between dust collection box 12 and the air-blower 15, and dust collection bin 13 bottom discharge gate is connected with sack cleaner 20, can carry out dust removal work to the mechanism sand after the fineness modulus has been adjusted through dust removal mechanism, improves the quality of finished product mechanism sand.

Wherein, a plurality of vibrators 19 (the vibrator 19 can be ZB110-50 model) are arranged on the ash screen 14, the mesh size on the ash screen 14 is smaller than the size of machine-made sand, and the vibrator 19 can vibrate and drop the machine-made sand or dust attached to the ash screen 14, thereby avoiding blocking the ash screen 14.

The dust removal box 12 is internally fixed with a splitter plate 18 through a fixed rod 17, the splitter plate 18 is positioned at the top of the protective net 16, the mesh size on the protective net 16 is smaller than the size of machine-made sand, the cross section of the splitter plate 18 is in a V shape, finished machine-made sand falling down from the blanking pipe 11 can be split through the splitter plate 18, the air contact surface between the split machine-made sand and the air blower 15 is larger, the dust separation efficiency in the machine-made sand is higher, and the protective net 16 can prevent the machine-made sand from entering the air blower 15 when the dust removal mechanism is used.

The dust removal work flow of finished product machine-made sand is as follows: when the device is used, the machine-made sand with the fineness modulus adjusted enters the dust collection box 12 through the blanking pipe 11, the machine-made sand is divided into two parts by the flow dividing plate 18 in the dust collection box 12, meanwhile, the air blower 15 is started to blow air flow into the machine-made sand which is divided into two parts in the dust collection box 12, and because the weight of the sand is larger than that of the dust, the dust in the machine-made sand is blown out onto the dust screening net 14 to enter the dust collection bin 13 and finally collected by the bag-type dust collector 20, if the dust screening net 14 is blocked, the vibrator 19 is started, and the blocked dust or the machine-made sand is vibrated to fall off.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device of adjustable mechanism sand fineness modulus, includes sand making machine (2) and two-layer screening machine (3), and the pan feeding mouth of two-layer screening machine (3), its characterized in that are connected to the discharge gate of sand making machine (2): be equipped with sieve chute (10) and adjustable chute (4) on two-layer screening machine (3), be equipped with first export (41), second export (43) and third export (44) in adjustable chute (4), first export (41) and second export (43) are connected sand making machine (2) pan feeding mouth, electric rotary valve (5) are connected to third export (44) bottom, sieve chute (10) bottom sets up unloading pipe (11), electric rotary valve (5) are connected unloading pipe (11), unloading pipe (11) bottom is equipped with dust removal mechanism.

2. An adjustable mechanism sand fineness modulus apparatus according to claim 1, wherein: an opening (42) is further arranged in the adjustable chute (4), and the opening (42) is arranged at the tops of the second outlet (43) and the third outlet (44) and is communicated with the second outlet (43) and the third outlet (44).

3. An adjustable mechanism sand fineness modulus apparatus according to claim 1, wherein: the electric rotary valve (5) comprises a valve body (53), blades (52) are arranged in the valve body (53), the blades (52) are driven by a stepping motor (51) fixed on the outer side of the valve body (53), a feeding hole of the valve body (53) is connected with a third outlet (44), and a discharging hole of the valve body (53) is connected with a screen blanking pipe (11).

4. An adjustable mechanism sand fineness modulus apparatus according to claim 1, wherein: the dust removing mechanism comprises a dust removing box (12) connected to the bottom of a discharging pipe (11), a dust collecting bin (13) is arranged on one surface of the dust removing box (12), a blower (15) is arranged on the opposite surface of the dust collecting bin (13) on the dust removing box (12), a dust screening net (14) is arranged at the joint of the dust collecting bin (13) and the dust removing box (12), a protection net (16) is arranged between the dust removing box (12) and the blower (15), and a cloth bag dust remover (20) is connected to a discharge hole at the bottom of the dust collecting bin (13).

5. The device for adjusting the fineness modulus of machine-made sand according to claim 4, wherein: a plurality of vibrators (19) are arranged on the ash screening net (14).

6. The device for adjusting the fineness modulus of machine-made sand according to claim 4, wherein: a splitter plate (18) is fixed in the dust removal box (12) through a fixed rod (17), the splitter plate (18) is positioned at the top of the protective net (16), and the cross section of the splitter plate (18) is in a V shape.