CN212040733U - A dust-reducing and environmentally friendly recycled aggregate crushing device - Google Patents

Abstract

A dust-reducing and environmentally friendly recycled aggregate crushing device belongs to the field of concrete, and comprises a casing, a crushing mechanism is arranged in the upper part of the casing, and a screening mechanism is arranged in the lower part of the casing, the crushing mechanism is a hammer crushing structure, and the screening mechanism comprises: Several layers of vibrating screens are inclined. The upper and lower layers of the vibrating screen are arranged in parallel. The screen holes of the upper vibrating screen are larger than those of the lower vibrating screen. The lower ends of the dust collectors are connected with their respective discharge ports; a dust removal port is arranged in the casing, and the dust removal equipment is connected through the dust removal port. The utility model has the advantages of novel conception, ingenious design, good crushing effect, convenient recycling for classified collection, no dust pollution on site, resource saving and good environmental protection effect.

Description

A dust-reducing and environmentally friendly recycled aggregate crushing device

technical field

The utility model relates to the field of building materials, in particular to concrete for construction, in particular to a device for preparing recycled aggregate by crushing waste concrete.

Background technique

Concrete material is by far the largest amount of man-made building materials, and is an indispensable material basis in the construction of human civilization. With the development of the economy and the advancement of urban construction, more and more concrete buildings have been erected, providing convenience for the expansion of people's gathering places. In this process, many building structures need to be demolished because they have reached their useful life or can no longer meet the application requirements, resulting in a large amount of waste concrete.

As construction waste, waste concrete has brought great trouble to the follow-up treatment work. Due to the firmness and durability of the concrete material, the waste concrete is difficult to be broken. It has many advantages, making it difficult to directly recycle waste concrete, occupying a lot of space resources. At present, the main treatment method is to transport it to the suburbs for open-air stacking or landfill. Because the waste concrete is difficult to degrade naturally, the land is occupied for a long time and polluted by solid waste for a long time. At the same time, the naturally dissolved part of the waste concrete will change the soil. ingredients, making it an unsuitable saline-alkali land for plant growth, which will bring serious environmental problems.

A new idea of recycling waste concrete is to process it to make it a recycled aggregate for construction that does not require high concrete materials, such as paving roads, etc., which can realize the recycling and reuse of waste concrete, and effectively avoid the above-mentioned various However, there is a lack of complete waste concrete treatment equipment in the prior art, and even using the existing crushing equipment will also generate a large amount of dust, which will bring serious air pollution to the processing site.

Utility model content

In order to solve the deficiencies of the prior art, the utility model proposes a dust-reducing and environment-friendly recycled aggregate crushing device, which crushes waste concrete to prepare recycled aggregate.

The technical problem to be solved by the present utility model is realized through the following technical solutions:

A dust-reducing and environmentally friendly recycled aggregate crushing device comprises a casing, a crushing mechanism is arranged in the upper part of the casing, and a screening mechanism is arranged in the lower part of the casing, wherein the crushing mechanism comprises a hammer disc, the hammer disc is arranged on a main shaft, and the main shaft is Driven by the motor, a number of hammer heads are evenly arranged on the edge of the hammer disc. The hammer heads are hinged with the hammer disc through a pin shaft. A lining plate for the impact of materials is arranged in the casing on the opposite side of the hammer disc, and a sieve plate is arranged at the lower end of the lining plate. , the space between the lining plate and the hammer plate is the crushing space, the top of the casing is provided with a feeding hopper, and the feeding hopper is located above the crushing space; the screening mechanism includes several layers of inclined vibrating screens, and the vibrating screen is up and down. The layers are arranged in parallel, the screen hole of the upper layer of vibrating screen is larger than that of the lower layer of vibrating screen, the upper end of the uppermost layer of vibrating screen is located directly below the outlet of the crushing space, and the lower end of each layer of vibrating screen is connected with its own outlet; A dust removal port is arranged in the casing, and the dust removal equipment is connected through the dust removal port.

In the utility model, a vertical screw hoist is arranged in the casing, the screw hoist comprises a riser pipe and a helical blade arranged in the riser pipe, and the lower end of the riser pipe is provided with a hoist collecting port, and the hoist collects the material. The port is connected to the lower end of the uppermost vibrating screen, the upper end of the lifting pipe is provided with an auxiliary feeding port, and the auxiliary feeding port is connected with the feeding hopper; the helical blade is driven by the lifting motor, and several resistance The lower end of the baffle plate is fixedly connected with the spiral blade, and is surrounded by a bucket shape, so that the material is carried and lifted by the bucket structure.

In the utility model, the dust removal equipment includes a cyclone separator, the upper part of the cyclone separator is provided with an inlet, which is connected to the dust removal port of the casing through a dust removal pipe, and the top of the cyclone separator is provided with an exhaust port. The bottom is provided with a dust discharge pipe, and the lower end of the dust discharge pipe is provided with a dust collection bin, and the dust collection bin receives the materials falling from the dust discharge pipe for recycling.

In the utility model, the lower part of the crushing mechanism is provided with a deflector, which guides the crushed material to the upper end position of the uppermost vibrating screen.

Further, the screening mechanism includes a first vibrating screen, a second vibrating screen and a vibrating bottom plate, wherein the first vibrating screen is the uppermost vibrating screen, the upper end of the first vibrating screen is located below the deflector, and the lower end is connected to the lifting screen. The second vibrating screen is located below the first vibrating screen, the lower end of the second vibrating screen is connected with the first discharging port, the vibrating bottom plate is located at the bottom layer, and the lower end of the vibrating bottom plate is connected with the second discharging port.

In the utility model, both ends of the main shaft of the crushing mechanism protrude from the casing, and are respectively provided with a pulley and a flywheel.

In the utility model, the casing is provided with an inspection port, which is convenient for inspection and maintenance of the wearing parts of the crushing mechanism.

In the utility model, the lower end of the casing is provided with a base, and the casing is fixed on the ground through the base.

Compared with the prior art, the utility model has novel conception and ingenious design. By concentrating the crushing mechanism and the screening mechanism into the casing, it is convenient to carry out targeted dust collection and purification, and avoids dust pollution to the environment during crushing. ; The crushed recycled aggregates with different particle sizes are collected through different outlets respectively, which is convenient for recycling; the materials with too large particles are sent to the crushing mechanism by the lifting equipment to be crushed again, which further improves the crushing effect and is conducive to the recovery of materials. Utilize, save resources, environmental protection effect is good.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the equipment distribution diagram of the utility model.

In the figure: casing 1, hammer disc 2, hammer head 3, main shaft 4, lining plate 5, sieve plate 6, feeding hopper 7, deflector 8, first vibrating screen 9, second vibrating screen 10, vibrating bottom plate 11. Base 12, first discharge port 13, second discharge port 14, elevator receiving port 15, screw elevator 16, riser 17, spiral blade 18, baffle 19, auxiliary feeding port 20, dust removal Port 21 , dust removal pipe 22 , cyclone separator 23 , exhaust port 24 , dust exhaust pipe 25 , dust collection bin 26 , pulley 27 , flywheel 28 , inspection port 29 .

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific preferred embodiments, but the protection scope of the present utility model is not limited thereby.

Referring to Figures 1 and 2, the dust-reducing and environmentally friendly recycled aggregate crushing device includes a casing 1, the lower end of the casing 1 is provided with a base 12, the casing 1 is fixed on the ground through the base 12, and the casing 1 is provided with a crusher mechanism, screening mechanism and screw elevator 16, the crushing mechanism includes a hammer disc 2, the hammer disc 2 is arranged on the main shaft 4, the two ends of the main shaft 4 protrude from the casing 1, and a pulley 27 and a flywheel 28 are respectively provided. 27 is connected to the motor through a belt, driven by the motor to rotate, and the flywheel 28 provides inertial support; the edge of the hammer disc 2 is evenly provided with 4 hammer heads 3, the hammer heads 3 are hinged with the hammer disc 2 through the pin shaft, and the casing corresponding to the hammer disc 2 1 is provided with a lining plate 5, the lower end of the lining plate 5 is provided with a sieve plate 6, the space between the lining plate 5 and the hammer plate 2 is a crushing space, and the waste concrete is in the crushing space, between the hammer head 3 and the lining plate 5. The top of the casing 1 is provided with a feeding hopper 7. The feeding hopper 7 is located above the crushing space. The waste concrete is fed into the crushing space through the feeding hopper 7. The lower part of the crushing mechanism is also provided with a deflector 8 ; The casing 1 is provided with an inspection port 29 for overhauling and maintaining the wearing parts of the crushing mechanism.

The screening mechanism includes two layers of inclined vibrating screen and vibrating bottom plate 11. The upper and lower layers of the two-layer vibrating screen are arranged in parallel. In the lower layer, the sieve hole of the first vibrating screen 9 is larger than that of the second vibrating screen 10, the upper end of the first vibrating screen 9 is located below the deflector 8, the lower end is connected to the screw elevator 16, and the second vibrating screen 10 A first discharge port 13 is connected to the lower end, and a second discharge port 14 is connected to the lower end of the vibration bottom plate 11 .

The screw elevator 16 is vertically arranged, and includes a riser pipe 17 and a helical blade 18 arranged in the riser pipe 17. The lower end of the riser pipe 17 is provided with an elevator receiving port 15, and the elevator receiving port 15 is connected to the first vibrating screen 9. The lower end of the lifting pipe 17 is provided with an auxiliary feeding port 20, which is communicated with the feeding hopper 7; the helical blade 18 is driven by a lifting motor, and several baffle plates are evenly arranged on the helical blade 18 19. The lower end of the blocking plate 19 is fixedly connected with the helical blade 18, and forms a bucket shape with it, so that the material is transported and lifted by the bucket-shaped structure.

The casing 1 is provided with a dust removal port 21, and is connected to the dust removal equipment through the dust removal port 21. The dust removal equipment includes a cyclone separator 23. The upper part of the cyclone separator 23 has an inlet, which is connected to the dust removal device of the casing 1 through a dust removal pipe 22. Port 21, the top of the cyclone separator 23 is provided with an exhaust port 24, the bottom of the cyclone separator 23 is provided with a dust discharge pipe 25, and the lower end of the dust discharge pipe 25 is provided with a dust collection bin 26. The material falling from the dust pipe 25 is used for recycling.

When the dust-reducing and environment-friendly recycled aggregate crushing device of the present invention is used in practical application, after preliminary crushing, the waste concrete is fed from the feeding port 7, and the waste concrete enters the crushing space for crushing. At this time, the motor is driven by the belt The pulley 27 drives the rotation of the main shaft 4, the hammer disc 2 rotates rapidly under the drive of the main shaft 4, and the hammer head 3 hinged on the hammer disc 2 strikes the waste concrete material falling into the crushing space, and the waste concrete material is in the hammer head. 3 is crushed under the action of blowing, impacting, shearing and grinding. The crushed materials are first screened by the sieve plate 6, the smaller particle size falls through the sieve plate, and the larger particle size continues to be driven by the hammer head 3 The material falls into the first vibrating screen 9 under the guidance of the deflector 8, and the smaller particle size continues to fall through the first vibrating screen 9 and falls on the second vibrating screen 10. , the larger particle size enters the screw elevator 16 through the elevator receiving port, the second vibrating screen 10 is screened for the third time, and the smaller particle size falls through the second vibrating screen 10 to the vibrating bottom plate 11, It is conveyed by the vibrating bottom plate 11, discharged through the second discharge port 14, and discharged through the second discharge port 13 with a small particle size.

In the utility model, a vertically arranged screw elevator is used to lift and convey powdery and granular materials. Since the materials have certain fluidity, many baffles are arranged on the spiral blades, so that the spiral blades and each baffle plate are connected to each other. Each bucket-shaped transport unit is formed. After the material enters the screw elevator 16, it is carried and lifted by each bucket-shaped transport unit, enters the feeding hopper 7 through the auxiliary feeding port 20, and enters the crushing space again for crushing work.

In the process of crushing the waste concrete material, the dust generated in the casing 1 is drawn out through the dust removal port 21 and sent to the cyclone separator 23 through the dust removal pipe 22. Under the separation action of the cyclone separator 23, clean air Discharged from the exhaust port, the material dust falls into the dust collection bin 26 through the dust discharge pipe 25 .

After crushing and screening in the above process, the crushed waste concrete is divided into three types of recycled aggregates according to the particle size. The larger particle size comes from the first outlet, and the medium particle size comes from the second outlet. The smaller particle size comes from the dust collection bin and is recycled and reused according to actual needs.

As another example, different from the above embodiments, the screening mechanism includes a first vibrating screen and a vibrating bottom plate, the upper end of the first vibrating screen is located below the deflector, the lower end is connected to the hoist receiving port, and the vibrating bottom plate is It is located below the first vibrating screen and is connected to the first vibrating screen, and the lower end of the vibrating bottom plate is connected with a discharge port. Compared with the above-mentioned embodiment, this embodiment reduces one layer of vibrating screen, adopts a single discharge port, and no longer separates and discharges materials according to the different discharge particle sizes, but further improves the discharging efficiency and crushing and recycling efficiency. high.

Therefore, in combination with the above structure and working process, it can be found that the dust-reducing and environment-friendly recycled aggregate crushing device of the present invention is novel in conception, ingenious in design, good in crushing effect, easy to recover by classification and collection, free from dust pollution on site, saves resources, and has environmental protection effects. it is good.

Claims (8)

1. A dust-reducing and environmentally friendly recycled aggregate crushing device is characterized in that: comprising a casing, the inner upper part of the casing is provided with a crushing mechanism, and the inner and lower part of the casing is provided with a screening mechanism, wherein the crushing mechanism comprises a hammer plate, and the hammer plate is provided with On the main shaft, the main shaft is driven by the motor. The edge of the hammer disc is evenly provided with several hammer heads. The hammer heads are hinged with the hammer disc through the pin shaft. The lower end is provided with a sieve plate, the space between the lining plate and the hammer plate is the crushing space, and the top of the casing is provided with a feeding hopper, and the feeding hopper is located above the crushing space; the screening mechanism includes several layers of inclined Vibrating screen, the upper and lower layers of the vibrating screen are arranged in parallel, the sieve hole of the upper vibrating screen is larger than that of the lower vibrating screen, the upper end of the uppermost vibrating screen is located directly below the outlet of the crushing space, and the lower ends of each vibrating screen are connected with Respective discharge ports; a dust removal port is arranged in the casing, and the dust removal equipment is connected through the dust removal port. 2. The dust-reducing and environment-friendly recycled aggregate crushing device according to claim 1, characterized in that: a vertical screw elevator is arranged in the casing, and the screw elevator comprises a riser pipe and a helical blade arranged in the riser pipe, The lower end of the riser is provided with an elevator material receiving port, the elevator material receiving port is connected to the lower end of the uppermost vibrating screen, the upper end of the rising pipe is provided with an auxiliary feeding port, and the auxiliary feeding port is communicated with the feeding hopper; the The helical blade is driven by a hoisting motor, and several baffle plates are evenly arranged on the helical blade, and the lower end of the baffle plate is fixedly connected with the helical blade and forms a bucket shape with it. 3. The dust-reducing and environment-friendly recycled aggregate crushing device according to claim 1, characterized in that: the dust-removing equipment comprises a cyclone separator, and the upper part of the cyclone separator is provided with an inlet, which is connected to the dust-removing port of the casing through a dust-removing pipe The top of the cyclone separator is provided with an exhaust port, the bottom of the cyclone separator is provided with a dust discharge pipe, and the lower end of the dust discharge pipe is provided with a dust collection bin, which holds the materials falling from the dust discharge pipe. 4 . The dust-reducing and environmentally friendly recycled aggregate crushing device according to claim 1 , wherein the lower part of the crushing mechanism is provided with a deflector to guide the crushed materials to the upper end of the uppermost vibrating screen. 5 . 5 . The dust-reducing and environment-friendly recycled aggregate crushing device according to claim 4 , wherein the screening mechanism comprises a first vibrating screen, a second vibrating screen and a vibrating bottom plate, wherein the first vibrating screen is the uppermost vibrating screen. 6 . Screen, the upper end of the first vibrating screen is located below the deflector, the lower end is connected to the receiving port of the hoist, the second vibrating screen is located below the first vibrating screen, and the lower end of the second vibrating screen is connected with the first discharge port, The vibrating bottom plate is located at the bottom layer, and the lower end of the vibrating bottom plate is connected with a second discharge port. 6. The dust-reducing and environment-friendly recycled aggregate crushing device according to claim 5, characterized in that: both ends of the main shaft of the crushing mechanism extend out of the casing, and are respectively provided with a pulley and a flywheel, and the pulley is connected to the motor through a belt, Rotated by the motor. 7 . The dust-reducing and environment-friendly recycled aggregate crushing device according to claim 1 , wherein an inspection port is provided on the casing. 8 . 8 . The dust-reducing and environmentally friendly recycled aggregate crushing device according to claim 7 , wherein the lower end of the casing is provided with a base, and the casing is fixed on the ground through the base. 9 .

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