CN114887718A

CN114887718A - Gravel grinding machine for shaping machine-made aggregate

Info

Publication number: CN114887718A
Application number: CN202210340904.3A
Authority: CN
Inventors: 张朝宏; 彭兴华; 李国栋; 尤大海; 张晋; 张立
Original assignee: Wuhan Rock Grinding Equipment Manufacturing Co Ltd; Hubei Metallurgy Geology Research Institute (central South Institute Of Metallurgical Geology)
Current assignee: Wuhan Rock Grinding Equipment Manufacturing Co Ltd; Hubei Metallurgy Geology Research Institute (central South Institute Of Metallurgical Geology)
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-08-12

Abstract

The invention provides a gravel mill for shaping machine-made aggregates, which comprises a gravel mill shell and a rotary drum machine, wherein the rotary drum machine body consists of an outer cylinder mesh enclosure, one end of the rotary drum machine is provided with a feed inlet, the other end of the rotary drum machine is provided with a rotating shaft, two sides of the annular machine body of the rotary drum machine are connected with the feed inlet and the rotating shaft through conical cylinder bodies, two ends of the rotary drum machine are rotatably connected with the gravel mill shell, the feed inlet is communicated with the interior of the rotary drum machine body, an inner cylinder mesh with an annular structure is further arranged in the rotary drum machine body, a plurality of openings are formed in the inner cylinder mesh, guide plates are arranged on the openings, one end of each guide plate is connected with one side of the opening of the inner cylinder mesh, and the other end of each guide plate is abutted against the interior of the outer cylinder mesh enclosure. The grain shape of the shaped product is better, so that the fluidity of the ready-mixed concrete is improved, the water consumption of the unit volume of the concrete and the consumption of the cementing material are reduced, and the performance of the concrete is enhanced.

Description

Gravel grinding machine for shaping machine-made aggregate

Technical Field

The invention relates to the field of machine-made aggregate shaping, in particular to a gravel grinding machine for shaping machine-made aggregates.

Background

Aggregate (also called aggregate) is an indispensable raw material for producing concrete, occupies about 70% of the concrete volume, and has a crucial influence on the concrete performance. The aggregate can be divided into natural aggregate and machine-made aggregate according to the source, and can be divided into coarse aggregate and fine aggregate (4.75-0.15 mm) according to the particle size. Fine aggregate is also known as aggregate. With the trend of natural aggregate resource restriction and increasing environmental protection, the mechanical aggregate has replaced the natural aggregate to become the main aggregate source for building the market.

On the whole, the machine-made aggregate has the outstanding problems of poor grain shape and the like, and causes a plurality of negative effects on the performance of concrete, such as increased void ratio, reduced compactness, reduced workability and durability of slurry, increased dosage of cementing materials and the like, thereby not only increasing the construction difficulty and the use cost, but also threatening the structural safety of constructional engineering.

The existing machine-made aggregate shaping is carried out by a reaction crusher and an impact crusher commonly, and a certain shaping effect can be achieved to a certain extent. The impact crusher and the impact crusher impact the aggregate by using a metal or nonmetal member with higher strength, so that the aggregate is violently collided on the impact member and the wall of the equipment, and the tip or the edge is preferentially cracked in the collision process between the aggregate and the member or the aggregate, thereby realizing the improvement of the particle shape of the aggregate.

The shaping equipment achieves the shaping effect by means of violent random collision, and the strength of the shaping equipment is not uniform due to different types, contents and mineralization properties of aggregate particles. Not only can the edges and corners be cracked in violent collision, but also the whole ore can be cracked, so that large particles are cracked into a plurality of small particles, and even cracks are formed in the particles. Over-crushing the ore and producing a large amount of stone powder with low economic value. Therefore, if the appropriate shaping effect is achieved and the over-crushing phenomenon is reduced, the shaping method of the violent impact collision type has a great defect.

Chinese patent "CN 212596087U" is a rod mill aggregate making device, which comprises: the rod mill, separator, carriage and motor, carriage one side is provided with the guide frame, be provided with separator on the guide frame, carriage one side top is provided with the safety cover, the safety cover communicates with each other through guide frame and separator's discharge gate, carriage opposite side top is provided with the bayonet socket, the rotatable setting of rod mill feed end is in the safety cover, the rotatable setting of rod mill discharge end is on the bayonet socket, the motor sets up in the carriage, the output of motor is provided with the bull stick, be provided with first gear on the bull stick, the rod mill surface be provided with can with first gear engagement's second gear. The shaping effect of the whole mechanism is poor when the mechanism rotates, the structure is complex, and the use is difficult.

Chinese patent 'CN 215942547U' a mechanism aggregate shaping device, relates to mechanism aggregate processing device technical field, including the workstation, the upper surface of workstation fixedly be equipped with the trimmer through the support, the trimmer include the casing of lower extreme and support fixed connection, fixed mounting in casing one side motor, the output shaft of motor run through the casing wall to be connected with the casing wall rotation through the bearing of inlaying in the casing wall, at the coaxial fixedly connected with cylinder of the tip of output shaft. The outer wall of the rotating shell is not provided with a protection device, so that splashing is easy to occur during polishing, internal aggregate is polished and cannot be completely leaked from the outer wall of the rotating shell, and partial polishing effect is poor.

Disclosure of Invention

Aiming at the problems that the grain shape of the common machine-made aggregate products on the market is not good, the machine-made aggregate shaping equipment has more defects, in particular to the problems that the application of more impact crushers and the impact crushers have no good shaping effect and are easy to generate over-crushing due to the fact that the impact crushers depend on violent impact collision, and the like.

The invention provides a shaping device which can achieve a proper shaping effect and can well reduce over-crushing. The technical scheme adopted by the invention is as follows: the utility model provides a carry out the gravel mill of plastic to mechanism aggregate, this gravel mill includes the gravel mill casing and changes the drum machine, it has the urceolus screen panel to change drum machine organism middle part cover, it is equipped with the feed inlet to change drum machine one end, the other end is equipped with the axis of rotation, change drum machine annular organism both sides and pass through conical barrel and feed inlet and rotation axis connection, it rotates with gravel mill casing to change drum machine both ends and is connected, the feed inlet with change the inside intercommunication of drum machine organism, the inside inner tube net that still is equipped with loop configuration of drum machine organism, be equipped with a plurality of openings on the inner tube net, be equipped with the stock guide on the opening, stock guide one end and inner tube net opening one side are connected, the other end supports and leans on inside the urceolus screen panel.

In the preferred scheme, a plurality of stock guides are uniformly arranged along the axle center of the rotary drum machine in an array way, and the stock guides are obliquely arranged.

In the preferred scheme, inner tube net both ends are connected with the conical barrel of rotary drum machine both sides, and inner tube net inside is equipped with a plurality of lift plates that stretch out.

In the preferred scheme, a plurality of reinforcing strips are arranged on the rotary drum machine, conical cylinders on two sides of the annular machine body of the rotary drum machine are connected through the reinforcing strips, and the outer surface of the outer cylinder mesh enclosure abuts against the reinforcing strips.

In the preferred scheme, strengthen the strip and include that first enhancement strip and second strengthen the strip, be equipped with the discharge gate on the rotary drum machine, two first enhancement strips are established in the discharge gate both sides.

In the preferred scheme, still be equipped with the door plant on the discharge gate, still be equipped with a plurality of bayonets on the first enhancement strip inside wall, the door plant both sides compress tightly on the discharge gate through a plurality of clamp plates, and clamp plate one end is pressed on the door plant, and the other end is established inside the bayonet socket, and the nut passes the clamp plate and changes drum machine shell threaded connection.

In the preferred scheme, the door plate is provided with a handle.

In the preferred scheme, a protective cover is arranged above the gravel mill shell, a discharge hopper is arranged below the gravel mill shell, and a transparent observation port is further arranged on the gravel mill shell.

Among the preferred scheme, the feed inlet of changeing the drum machine is established in gravel mill casing one side, and gravel mill casing one side is equipped with the feeder hopper, and the feeder hopper lower extreme is equipped with the feed chute, and the feeder hopper is established on removing the frame, removes the frame below and is equipped with a plurality of universal wheels, and the feeder hopper removes through removing the frame, makes the feed chute of feeder hopper stretch into from the feed inlet and changes inside the drum machine.

In the preferred scheme, a gravel mill shell is arranged on a support frame, a side support table is further arranged on one side of the support frame, a gear box and a driving motor are arranged on the side support table, the driving motor is connected with the gear box, and a rotating shaft at the other end of the rotary drum machine is connected with the gear box through a transmission belt;

the other side of the gravel mill shell is also provided with an electric cabinet which is electrically connected with a driving motor.

The invention provides a pebble mill for shaping machine-made aggregate, which selects proper cylinder diameter and rotation speed according to ore properties, ensures weak impact and abrasion strength of aggregate particles in a cylinder, and can greatly reduce the fracture of the aggregate particles into small particles, thereby properly prolonging the shaping time. The aggregate particles reach better sphericity, the edges and corners of the aggregate particles are reduced, and the surface smoothness of the aggregate particles is improved. By means of impact and abrasion among the aggregate particles, other ore grinding media are not required to be added, impact and breakage of the aggregate particles by the media are reduced, and energy consumption and material consumption are greatly reduced while the shaping effect is guaranteed. The inner and outer cylinder walls are in double-layer forced classification, large particle materials in the pebble mill have higher gravitational potential energy, small particle materials are easier to break and abrade, and the shaping quality and the shaping efficiency of machine-made aggregates can be effectively improved, so that aggregate products with better particle shapes are obtained, the slurry fluidity is improved, the water consumption per unit volume and the use amount of cementing materials are reduced, and the workability, durability and other multiple properties of concrete are improved.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a general block diagram of the present invention;

FIG. 2 is a view of the open configuration of the protective cover of the present invention;

FIG. 3 is a front cross-sectional block diagram of the present invention;

FIG. 4 is a view showing the external appearance of the drum machine according to the present invention;

FIG. 5 is a view showing the structure of the installation of the inner cylinder net in the drum machine according to the present invention;

in the figure: a protective cover 1; a feed hopper 2; an electric cabinet 3; a movable frame 4; a universal wheel 401; a pebble mill casing 5; a viewing port 501; a discharge hopper 502; a gear case 6; a support frame 7; a side support table 8; a drive motor 9; a belt protection cover 10; a drum rotating machine 11; a feed inlet 1101; an outer cylinder mesh enclosure 1102; a first reinforcing strip 1103; a bayonet 1104; a discharge port 1105; a stock guide plate 1106; an inner cylinder net 1107; a lift plate 1108; a second reinforcing bar 1104; to the belt 12; a door panel 13; a handle 1301; a platen 14.

Detailed Description

Example 1

As shown in fig. 1 to 4, a gravel mill for shaping machine-made aggregate comprises a gravel mill shell 5 and a rotary drum machine 11, an outer cylinder mesh enclosure 1102 covers the middle of the rotary drum machine 11, a feed inlet 1101 is arranged at one end of the rotary drum machine 11, a rotating shaft is arranged at the other end of the rotary drum machine 11, two sides of an annular machine body of the rotary drum machine 11 are connected with the feed inlet 1101 and the rotating shaft through conical cylinders, two ends of the rotary drum machine 11 are rotatably connected with the gravel mill shell 5, the feed inlet 1101 is communicated with the inside of the rotary drum machine 11, an inner cylinder mesh 1107 with an annular structure is further arranged inside the rotary drum machine 11, a plurality of openings are arranged on the inner cylinder mesh 1107, a guide plate 1106 is arranged on each opening, one end of the guide plate 1106 is connected with one side of the opening of the inner cylinder mesh 1107, and the other end of the guide plate abuts against the inside of the outer cylinder mesh enclosure 1102. Particles with the granularity of less than 4.75mm leave the shaping area of the inner cylinder net 1107 through the small holes on the inner cylinder net 1107 and enter the grading area between the outer cylinder net cover 1102 and the inner cylinder net 1107. The particles with the particle size of less than 4.75mm are screened and classified in the classification area, and the particles with the particle size of less than the mesh size of the outer cylinder mesh cover 1102 are discharged out of the cylinder. The particles larger than the mesh size of the outer cylinder mesh cover 1102 are guided by the material guide plate 1106 and returned to the shaping area inside the inner cylinder mesh 1107 again.

In a preferred embodiment, a plurality of material guiding plates 1106 are uniformly arranged along the axial center of the drum rotating machine 11 in an array, and the material guiding plates 1106 are arranged in an inclined manner. The guide plate 1106 is obliquely arranged, so that particles can be guided into the inner cylinder net 1107 for shaping.

In a preferable scheme, two ends of the inner cylinder net 1107 are connected with conical cylinders on two sides of the drum rotating machine 11, and a plurality of extending lifting plates 1108 are arranged inside the inner cylinder net 1107. A large amount of aggregates are stored between the adjacent lifting plates 1108, and along with the rotation of the drum rotating machine 11, the aggregates between the adjacent lifting plates 1108 are lifted to a certain height and then fall down, so that weak impact and mutual friction are formed between the materials and the materials or the barrel.

In a preferred scheme, a plurality of reinforcing strips are arranged on the rotary drum machine 11, conical cylinders on two sides of an annular machine body of the rotary drum machine 11 are connected through the reinforcing strips, and the outer surface of the outer cylinder mesh enclosure 1102 abuts against the reinforcing strips. The reinforcing strips comprise a first reinforcing strip 1103 and a second reinforcing strip 1104, a discharge port 1105 is arranged on the rotary drum machine 11, and the two first reinforcing strips 1103 are arranged on two sides of the discharge port 1105. The first 1103 and second 1104 reinforcing bars reinforce the rigid structure of the entire rotary drum machine 11.

In the preferred scheme, still be equipped with door plant 14 on the discharge gate 1105, still be equipped with a plurality of bayonets 1104 on the first enhancement strip 1103 inside wall, door plant 14 both sides compress tightly on discharge gate 1105 through a plurality of clamp plates 14, and clamp plate 14 one end is pressed on door plant 14, and the other end is established inside bayonet 1103, and the nut passes clamp plate 14 and changes drum machine 11 shell threaded connection. Insert the clamp plate 14 inside bayonet 1103 during installation clamp plate 14 earlier for stabilize clamp plate 14, clamp plate 14 also can not drop easily, conveniently fixes rethread nut locking behind the whole door plant 14.

Preferably, a handle 1301 is arranged on the door panel 14. The installation and removal of the door panel 14 is facilitated.

In a preferred scheme, the protective cover 1 is arranged above the gravel mill shell 5, the discharge hopper 502 is arranged below the gravel mill shell 5, and the transparent observation port 501 is further arranged on the gravel mill shell 5. The protective cover 1 prevents material from splashing on the rotary drum machine 11, and the viewing port 501 facilitates observation of the conditions inside the pebble mill shell 5.

In the preferred scheme, the feed inlet 1101 of the rotary drum machine 11 is arranged on one side of the gravel mill shell 5, the feed hopper 2 is arranged on one side of the gravel mill shell 5, the feed chute 201 is arranged at the lower end of the feed hopper 2, the feed hopper 2 is arranged on the movable frame 4, the plurality of universal wheels 401 are arranged below the movable frame 4, and the feed hopper 2 moves through the movable frame 4, so that the feed chute 201 of the feed hopper 2 extends into the rotary drum machine 11 from the feed inlet 1101. The feed hopper 2 is moved to the position of the feed opening 1101 on the side of the pebble mill shell 5 and the feed chute 201 of the feed hopper 2 projects into the interior of the feed opening 1101.

In the preferred scheme, gravel mill casing 5 is established on support frame 7, and support frame 7 one side still is equipped with side supporting platform 8, is equipped with gear box 6 and driving motor 9 on the side supporting platform 8, and driving motor 9 is connected with gear box 6, and the axis of rotation of the 11 other ends of rotary drum machine is through passing to 12 and gear box 6 and being connected, and gravel mill casing 5 opposite side still is equipped with electric cabinet 3, and electric cabinet 3 is connected with driving motor 9 electricity. The driving motor 9 drives the whole drum rotating machine 11 to rotate through the gear box 6, and the electric cabinet 3 controls the driving motor 9 to rotate forward and backward.

Example 2

Further described with reference to example 1, as shown in fig. 1 to 5, in order to prevent the loss of aggregate particles caused by over-crushing, in the shaping process, the small-particle materials passing through the sieve holes of the outer cylinder can be discharged in time by forced classification through the sieve holes of the inner and outer cylinder walls, and the over-crushing caused by the fragmentation of the small-particle materials is greatly reduced. The medium-granularity particles which can pass through the sieve holes of the inner barrel but are larger than the sieve holes of the outer barrel circulate in the shaping area of the inner barrel and the classification area of the outer barrel, and the opening size of the end of the material guide plate 1106 is properly adjusted, so that the circulation time can be adjusted, the action time of medium-granularity materials in the shaping area is shortened, and the fragmentation and over-crushing are reduced while the shaping is ensured. Set up inside and outside double-deck section of thick bamboo wall, inner tube sieve mesh size is great, and urceolus sieve mesh size is less, and the material need pass through the inner tube sieve mesh earlier, just can get into urceolus classification district, prevents the violent impact of too big granule to outer screen cloth, protection outer screen cloth life.

According to the difference of aggregate particle pan feeding granularity and target plastic effect, set up suitable lifting plate and barrel rotational speed, guarantee plastic effect reduces and smashes. The barrel on the power device driving rack rotates anticlockwise, materials enter the barrel from the feed opening through the guide chute, rotate to a certain height along with the rotation of the barrel under the friction and pushing actions of the inner barrel net 1107 and the lifting plate 1108, and are thrown down, so that weak impact and mutual friction are formed between the materials and the materials or the barrel. The edges and corners of the materials are impacted and abraded by weak impact and friction, so that the shape of the aggregate particles is changed, more excellent particle shape is achieved, and the content of flaky particles and irregular particles in the aggregate particles are reduced.

Particles with the granularity of less than 4.75mm leave the shaping area of the inner cylinder net 1107 through the small holes on the inner cylinder net 1107 and enter the grading area between the outer cylinder net cover 1102 and the inner cylinder net 1107. The particles with the particle size of less than 4.75mm are screened and classified in the classification area, and the particles with the particle size of less than the mesh size of the outer cylinder mesh cover 1102 are discharged out of the cylinder. Particles larger than the mesh size of the outer cylinder mesh cover 1102 are guided by the material guide plate 1106 to return to the shaping area inside the inner cylinder mesh 1107 again.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. Equivalent replacement modifications within the scope are also within the protection scope of the invention, and the modification of tailings and other solids are also within the protection scope of the invention.

Claims

1. A gravel grinding machine for shaping machine-made aggregate is characterized in that: the gravel mill comprises a gravel mill shell (5) and a rotary drum machine (11), the middle of the rotary drum machine body (11) is covered with an outer cylinder mesh enclosure (1102), one end of the rotary drum machine (11) is provided with a feeding hole (1101), the other end of the rotary drum machine (11) is provided with a rotating shaft, two sides of the annular machine body of the rotary drum machine (11) are connected with the feeding hole (1101) and the rotating shaft through conical cylinder bodies, two ends of the rotary drum machine (11) are rotatably connected with the gravel mill shell (5), the feeding hole (1101) is communicated with the interior of the rotary drum machine body (11), an inner cylinder mesh (1107) of an annular structure is further arranged in the rotary drum machine body (11), a plurality of openings are formed in the inner cylinder mesh (1107), a material guide plate (1106) is arranged on each opening, one end of the material guide plate (1106) is connected with one side of the opening of the inner cylinder mesh (1107), and the other end of the material is abutted against the interior of the outer cylinder mesh enclosure (1102).

2. The gravel mill for shaping machine-made aggregate of claim 1, wherein: the plurality of material guide plates (1106) are uniformly arranged in an array along the axis of the rotary drum machine (11), and the material guide plates (1106) are obliquely arranged.

3. The gravel mill for shaping machine-made aggregate of claim 1, wherein: two ends of the inner cylinder net (1107) are connected with conical cylinders on two sides of the drum rotating machine (11), and a plurality of extending lifting plates (1108) are arranged in the inner cylinder net (1107).

4. The gravel mill for shaping machine-made aggregate of claim 1, wherein: be equipped with a plurality of enhancement strips on changeing drum machine (11), change drum machine (11) annular organism both sides toper barrel and pass through the enhancement strip and connect, urceolus screen panel (1102) surface supports and leans on the enhancement strip.

5. The gravel mill for shaping machine-made aggregate of claim 4, wherein: the reinforcing strips comprise first reinforcing strips (1103) and second reinforcing strips (1104), a discharge port (1105) is formed in the rotary drum machine (11), and the two first reinforcing strips (1103) are arranged on two sides of the discharge port (1105).

6. The gravel mill for shaping machine-made aggregate of claim 5, wherein: still be equipped with door plant (14) on discharge gate (1105), still be equipped with a plurality of bayonets (1104) on first enhancement strip (1103) inside wall, door plant (14) both sides compress tightly on discharge gate (1105) through a plurality of clamp plates (14), and clamp plate (14) one end is pressed on door plant (14), and the other end is established inside bayonet socket (1103), and the nut passes clamp plate (14) and changes drum machine (11) shell threaded connection.

7. The gravel mill for shaping machine-made aggregate of claim 6, wherein: the door panel (14) is provided with a handle (1301).

8. The gravel mill for shaping machine-made aggregate of claim 1, wherein: a protective cover (1) is arranged above the gravel mill shell (5), a discharge hopper (502) is arranged below the gravel mill shell (5), and a transparent observation port (501) is also arranged on the gravel mill shell (5).

9. The gravel mill for shaping machine-made aggregate of claim 1, wherein: the feed inlet (1101) of the rotary drum machine (11) is arranged on one side of a gravel mill shell (5), the feed hopper (2) is arranged on one side of the gravel mill shell (5), a feed chute (201) is arranged at the lower end of the feed hopper (2), the feed hopper (2) is arranged on a movable frame (4), a plurality of universal wheels (401) are arranged below the movable frame (4), the feed hopper (2) moves through the movable frame (4), and the feed chute (201) of the feed hopper (2) extends into the rotary drum machine (11) from the feed inlet (1101).

10. The gravel mill for shaping machine-made aggregate of claim 1, wherein: the gravel mill shell (5) is arranged on the support frame (7), one side of the support frame (7) is also provided with a side support table (8), the side support table (8) is provided with a gear box (6) and a driving motor (9), the driving motor (9) is connected with the gear box (6), and a rotating shaft at the other end of the rotary drum machine (11) is connected with the gear box (6) through a transmission belt (12);

the other side of the gravel mill shell (5) is also provided with an electric cabinet (3), and the electric cabinet (3) is electrically connected with a driving motor (9).