CN108212733A - Sandstone detaches drying device - Google Patents

Abstract

The invention belongs to the field of construction engineering and specifically discloses a sand and gravel separation and drying device. A drum screen is connected to a frame, a rotating motor for driving the drum screen to rotate is fixed on the frame, a bottom plate, and a drum are fixed on the frame. The sieve and the bottom plate are rotatably connected; the inner wall of the trommel screen is fixedly connected with an inner gear ring, and the lower part of the bottom plate is rotatably connected with a rotating roller, and the rotating roller runs through the bottom plate, and the outer wall of the rotating roller is equipped with a gear that meshes with the inner gear ring; the outer wall of the rotating roller is There are multiple protrusions, the end of the rotating roller far away from the bottom plate is connected with a telescopic cover, the telescopic cover is wound with a heating wire, the telescopic cover is provided with an air intake hole, and an air intake check valve is arranged in the air intake hole; the rotating roller is far away from the The end face of the bottom plate is also provided with an air inlet groove communicating with the telescopic cover, and the outer wall of the rotating roller is also provided with an air outlet hole communicating with the air inlet groove, and an air outlet check valve is arranged in the air outlet hole. By adopting the scheme of the present invention, drying is carried out while sand and gravel are separated, and the two processes are combined into one, which saves time and improves efficiency.

Description

Sand and gravel separation and drying device

technical field

The invention belongs to the field of construction engineering and specifically discloses a sand and gravel separation and drying device.

Background technique

On the construction site, it is often necessary to use a large amount of sand and gravel. The raw materials of sand and gravel are generally obtained from rivers and other places. , generally use a sieve to separate the mixed sand and stones, and then use them separately. Because the sand and gravel raw materials contain a lot of water, and the sand is easy to agglomerate and adhere to the screen when it encounters water, so the agglomerated sand is not easy to be sieved out during the separation process with the sieve, resulting in incomplete separation. On the one hand, it causes The waste of sand, on the one hand, the sand is mixed in the stone, which affects the subsequent utilization of the stone. And the screen cannot work for a long time, and it is necessary to constantly clean the wet sand adhered to the screen.

In order to solve the above problems, and because the dry sand is more convenient for subsequent use, the sand and gravel raw materials are generally dried before separation, and the sand and gravel raw materials are usually dried by heating with electric heating wires through heat transfer, and the dispersed sand It is easy to be dried by heating, but due to the large size of the agglomerated sand, it takes a long time for the heat to be transferred to the inside and completely dried, and the efficiency is low.

Contents of the invention

The object of the present invention is to provide a sand separation and drying device to solve the problems of difficult separation and low drying efficiency due to sand agglomeration.

In order to achieve the above object, the basic solution of the present invention is: the sand and gravel separation and drying device, including a frame, a drum screen is connected to rotate on the frame, a rotating motor for driving the drum screen to rotate is also fixed on the frame, and The bottom plate is fixed, and the trommel screen is connected to the bottom plate in rotation; the inner wall of the trommel screen is fixedly connected with an internal gear ring, and the lower part of the bottom plate is rotatably connected to a plurality of rotating rollers, and the rotating rollers pass through the bottom plate. One end of the rotating roller is located in the trommel screen. The other end is rotatably connected to the frame, and the outer wall of the rotating roller is equipped with gears meshing with the inner ring gear; the outer wall of the rotating roller is provided with a plurality of protrusions, and the end of the rotating roller far away from the bottom plate is connected with a telescopic cover. Heating wires are wound, air inlet holes are arranged on the telescopic cover, and an air intake check valve is arranged in the air inlet holes; an air inlet groove connected with the telescopic cover is also provided on the end surface of the rotating roller away from the bottom plate, and an air inlet groove connected with the telescopic cover is provided on the outer wall of the rotating roller. There is an air outlet hole connected with the air inlet groove, and an air outlet check valve is arranged in the air outlet hole, and a spiral groove is also arranged on the inner wall of the air inlet groove, and a pole is slidably connected to the spiral groove, and the end of the pole away from the rotating roller is connected to the The telescopic hood is away from the end of the trommel screen.

The working principle of this basic scheme is: the rotary motor drives the trommel to rotate, the inner toothed gear rotates with the trommel, drives the gear meshed with the toothed gear to rotate, and the rotating rollers rotate with the gears respectively. After entering the drum screen, the sand and gravel materials will fall on the rotating rollers on the lower side of the drum screen due to gravity. The raw material rotates with the rotating roller on the rotating roller, so as to realize the primary screening of the sand and gravel raw material. There are protrusions on the rotating rollers, and the sand and gravel materials falling on the rotating rollers are squeezed by the protrusions on the adjacent rotating rollers, among which, the agglomerated sand is squeezed and crushed, and falls on the trommel screen. Impurities such as stones will not be crushed by the bumps, but will remain on the rotating rollers to separate the sand and gravel; the drum sieve performs secondary screening on the raw materials falling on it, and during the rotation of the drum sieve, the raw materials on the drum sieve are subjected to Shaking, the sand that meets the requirements is screened out, and some sand that still does not meet the requirements will be left in the drum sieve.

Due to gravity, the mast automatically slides to the lower side of the air intake groove in the spiral groove. During the rotation of the rotating roller, the rotation of the spiral groove drives the mast to make a reciprocating linear motion. The mast is connected to the end of the telescopic cover away from the rotating roller, so When the mast moves toward the direction close to the bottom plate, it drives the telescopic cover to shrink, and when it moves toward the direction away from the bottom plate, it drives the telescopic cover to reset. There is an electric heating wire on the telescopic cover, and the electric heating wire heats the air in the telescopic cover. When the telescopic cover shrinks, because the air volume in the telescopic cover remains unchanged, but the space inside the telescopic cover becomes smaller, the air pressure increases, and the heated air is heated. Squeeze into the air intake groove of the rotating roller, discharge from the air outlet, and dry the sand and gravel materials on the rotating roller and in the trommel screen; Air intake holes draw outside air into the bellows. Since the agglomerated sand can be crushed during the rotation of the rotating roller, it is easier to dry after crushing, and the heated air is used for drying. efficiency.

The beneficial effects of this basic plan are:

1. During the rotating process of the rotating roller, on the one hand, the sand and gravel raw materials can be screened first, and the protrusions between the adjacent rotating rollers will crush the agglomerated sand, which is convenient for the complete separation of sand and stone; on the other hand, the spiral groove Drive the mast to reciprocate and rotate, and the mast drives the telescopic cover to realize expansion and contraction, sends heated air into the air intake slot, and flows out from the air outlet hole to dry the sand and gravel raw materials. Drying is carried out while sand and gravel are separated, combining the two processes into one, saving time and improving efficiency.

2. Use gas to dry the sand and gravel raw materials. On the one hand, the gas circulation can make the sand and gravel raw materials evenly heated and improve the drying efficiency. On the other hand, the sand and gravel raw materials contain moisture, and the sand is easy to adhere to the drum screen and the rotating roller. , and the flow of gas can blow off the sand, avoiding the need for frequent cleaning of the device due to sand adhesion.

Further, the heating wire is spirally wound on the inner wall of the telescoping cover. The spiral shape can increase the contact area between the heating wire and the air in the telescopic cover, and improve the speed of heat transfer.

Further, a collection bucket is provided on the frame below the trommel screen, and the diameter of the mouth of the collection bucket is larger than the length of the trommel screen, so that the sand screened out by the trommel screen can be fully collected.

Further, the protrusions are hemispherical, and the contact area between the hemispherical protrusions and the sand is larger, and the grinding effect on the agglomerated sand is better.

Further, the frame is also provided with a cover plate, the end of the drum screen away from the bottom plate is rotatably connected to the cover plate, the cover plate is provided with a feed port, and the feed port is connected with a delivery pipe, and the delivery pipe is far away from the cover plate One end slopes upwards. Setting the cover plate can prevent the material from splashing out during the screening process. The end of the conveying pipe away from the cover plate is inclined upward. During the feeding process, the sand and gravel raw materials can slide into the drum screen in the conveying pipe by its own gravity, and the feeding is faster. .

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is a schematic diagram of the distribution of gears in the inner ring gear.

Detailed ways

The following is further described in detail through specific implementation methods:

The reference signs in the accompanying drawings of the specification include: trommel 1, rotating roller 2, air intake groove 21, ring gear 3, gear 4, protrusion 5, spiral groove 6, mast 7, telescopic cover 8, bottom plate 9.

As shown in Figure 1, the sand and gravel separation and drying device includes a frame, a rotating motor is fixed on the frame, a trommel 1 is rotatably connected to the frame, and a drive for transmission is connected between the outer wall of the trommel 1 and the output shaft of the rotating motor. belt; the left end of the trommel 1 is connected with a disc-shaped bottom plate 9, the right end of the trommel 1 is connected with a cover plate, and the cover plate and the bottom plate 9 are all fixed on the frame. A through hole, the center of all through holes is connected to form a semicircle with the same center of the base plate 9, and the turning roller 2 is installed in the through hole. Extend the cover. A feeding port is arranged on the cover plate, and a conveying pipe is connected to the feeding port, and the right end of the conveying pipe is inclined upward.

The inner wall of the right end of the trommel 1 is connected with an internal gear 3 , and the right end of the rotating roller 2 is connected with a gear 4 meshing with the internal gear 3 . The rotating roller 2 is provided with a protrusion 5, and the protrusion 5 is hemispherical. Turning roller 2 right-hand ends are provided with air inlet groove 21, and the length of inlet groove 21 is the length of 2/3rds of turning roller 2, and turning roller 2 outer wall is provided with the vent hole that communicates with inlet groove 21, and turning roller 2 right-hand ends connect There is a telescopic cover 8 communicated with the air intake groove 21, and a heating wire is arranged on the telescopic cover 8, and the heating wire is spirally wound on the telescopic cover 8. The inwall of air inlet groove 21 right-hand sides is provided with helical groove 6, and mast 7 is slidably connected in helical groove 6, and mast 7 right-hand ends are connected with telescoping cover 8 right-hand sides. The frame below the trommel 1 is also provided with a collecting barrel, and the diameter of the mouth of the collecting barrel is greater than the length of the trommel 1.

During specific work, the sand and gravel raw material enters the drum screen 1 from the feeding port through the conveying pipe, falls on the rotating roller 2, starts the rotating motor, and the rotating motor drives the drum screen 1 to rotate, and the inner ring gear 3 meshes with the gear 4 to drive multiple The rotating roller 2 rotates, and during the rotating process of the rotating roller 2, the protrusions 5 between the adjacent rotating rollers 2 crush the agglomerated sand, and the sand that meets the requirements falls to the bottom of the trommel 1 through the gap between the rotating rollers 2, and is placed on the drum screen. The sieve 1 shakes during rotation and is sieved into the collection bucket.

During the rotation of the rotating roller 2, the spiral groove 6 is also rotating, and the mast 7 naturally falls on the lower side of the air intake groove 21 due to gravity, and does a reciprocating linear motion with the rotation of the spiral groove 6, and the mast 7 moves to the left. Pull the telescopic cover 8 to shrink, the air in the telescopic cover 8 squeezes into the air intake slot 21, and is discharged from the air outlet. Since the telescopic cover 8 is provided with a heating wire, the heating wire can heat the air in the telescopic cover 8, so the discharged It is hot air. During the flow of hot air, the drying of sand and gravel raw materials can be realized, and the sand adhered to the rotating roller 2 or trommel 1 can be blown off. The pole 7 moves to the right, and the telescopic cover 8 is reset. During the reset process of the telescopic cover 8, due to the gas discharge in the telescopic cover 8, it is in a negative pressure state, and the air is absorbed from the outside into the telescopic cover 8. Repeat the above working process.

What is described above is only an embodiment of the present invention, and common knowledge such as specific structures and characteristics known in the scheme are not described here too much. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, several modifications and improvements can also be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents.

Claims (5)

1. sandstone detaches drying device, including rack, it is characterised in that：It is rotatably connected to rotary screen in rack, it is also solid in rack Surely the electric rotating machine of driving drum sieve rotation is useful for, bottom plate is further fixed in rack, rotary screen is rotatablely connected with bottom plate；Roller Sieve inner wall is fixedly connected with ring gear, and the lower rotational of bottom plate is connected with more rotating rollers, and rotating roller is through bottom plate, rotating roller One end be located in rotary screen, the other end of rotating roller is rotatably connected in rack, and rotating roller outer wall is arranged with and ring gear Meshed gears；Multiple protrusions are equipped on rotating roller outer wall, the one end of rotating roller far from bottom plate is connected with telescopic cover, telescopic cover On be wound with heating wire, telescopic cover is equipped with air admission hole, and breather check valve is equipped in air admission hole；End face of the rotating roller far from bottom plate On be additionally provided with the air inlet duct connected with telescopic cover, the venthole connected with air inlet duct is additionally provided on rotating roller outer wall, in venthole Equipped with outgassing nonreturn valve, helicla flute is additionally provided on air inlet duct inner wall, mast is slidably connected in helicla flute, mast is far from rotating roller One end be connected to the one end of telescopic cover far from rotary screen.

2. sandstone according to claim 1 detaches drying device, it is characterised in that：The heating wire is spirally wrapped around Telescopic cover inner wall.

3. sandstone according to claim 1 detaches drying device, it is characterised in that：It is set in rack below the rotary screen There is collecting vessel, the bung hole diameter of collecting vessel is more than the length of rotary screen.

4. sandstone according to claim 1 detaches drying device, it is characterised in that：The protrusion is in hemispherical.

5. sandstone according to claim 1 detaches drying device, it is characterised in that：Cover board is additionally provided in the rack, is rolled One end rotation connection of the shaft screen far from bottom plate is rotatablely connected with cover board, and cover board is equipped with feed inlet, and conveying is connected on feed inlet Pipe, the one end of delivery pipe far from cover board tilts upwards.