A drum type screening and dust removal integrated device

Abstract

The present invention discloses a drum type screening dust removal integrated device, including a frame, a drum, a screen cylinder, a driving shaft, a driving motor, a feed bin, a discharge bin, a plurality of long spiral blades, a plurality of dust plates, a plurality of short spiral blades and an air supply bin; the driving shaft is fixed on the frame and connected to the driving motor; the drum and the screen cylinder are fixed on the driving shaft, the screen cylinder is placed in the discharge bin, the air supply bin is placed at the front end of the drum, the feed bin penetrates from the top of the air supply bin and is connected with the inside of the drum; long spiral blades and dust plates are fixed on the inner wall of the drum, and short spiral blades are fixed in the screen cylinder; air supply pipes are provided on the front and bottom of the air supply bin; an air outlet pipe is provided on the top of the discharge bin, and a small particle discharge hopper and a large particle discharge hopper are provided at the bottom of the discharge bin. The long spiral blades and short spiral blades adopted by the present invention can greatly enhance the screening efficiency of materials, and the design of the dust plate and the ventilation duct also greatly improves the dust removal effect.

Description

Technical Field

[0001] The invention relates to the technical field of material screening, and in particular to a drum-type integrated screening and dust removal device. Background Art

[0002] The drum screening machine is used in the fields of pharmaceuticals, food, chemicals and agricultural products. Its main structure includes a drum and a screen, and the screen is placed inside the drum. When working, the drum starts to rotate under the drive of the motor, thereby driving the material to flip together in the drum. During the flipping process, the material will be separated from the dust and debris on its surface, and the dust or debris will leave the drum through the mesh of the screen, thereby achieving the purpose of material screening.

[0003] At present, in addition to the basic material screening function, some existing drum screening machines also have a dust removal function. A dust collection hopper is set up at the bottom, and the screened dust is deposited on the inclined baffle and then slides into the ash collection hopper. Another dust removal method is to install a dust extraction device at the feed inlet, so that part of the dust can be sucked away by the dust extraction device while feeding.

[0004] However, the dust removal effects of the above two existing dust removal methods are not ideal, and when the screening machine stops working, the dust remaining in the screen drum not only easily blocks the screen, but also pollutes the inner wall of the drum, making it difficult to clean after production. Summary of the invention

[0005] In view of the many problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a drum-type integrated screening and dust removal device, which not only has a higher screening efficiency, but also has a stronger dust removal ability.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A drum-type screening and dust removal integrated device, comprising a frame, a drum, a screen drum, a driving shaft and a driving motor; characterized in that it also comprises a feeding bin, a discharging bin, a plurality of long spiral blades, a plurality of dust-raising plates, a plurality of short spiral blades and an air supply bin; the two ends of the driving shaft are respectively mounted on a shaft seat, the shaft seat is fixed to the frame and connected to the driving motor; the drum is fixed to the front of the driving shaft and rotates synchronously with it; the screen drum is placed in the discharging bin, and is fixedly docked with the rear end of the drum and fixed at The rear part of the driving shaft rotates synchronously with the drum; the air supply bin is connected to the front end of the drum, and the feeding bin is inserted from the top of the air supply bin and is connected with the interior of the drum; the several long spiral blades are fixed to the front part of the inner wall of the drum; the several dust-raising plates are fixed to the rear part of the inner wall of the drum; the short spiral blades are fixed to the inner wall of the screen cylinder; an air outlet pipe is provided at the top of the discharge bin, and a small particle discharge hopper and a large particle discharge hopper are provided at the bottom of the discharge bin, and air supply ducts are provided on the front and bottom of the air supply bin.

[0008] According to the above technical solution, the feed bin is in a herringbone shape, with a feed port on the top and placed on the top of the air supply bin. The lower part of the feed bin includes two feed channels, and the two feed channels are respectively placed on both sides of the drive shaft.

[0009] According to the above technical solution, the inner wall of the feed channel is provided with a plurality of step plates, and the step plates are inclined downward. The design of the step plates can enhance the separation of dust and materials during the feeding stage.

[0010] According to the above technical solution, the front and rear of the drive shaft are respectively provided with a first cross support and a second cross support; the drum is fixedly connected to the front of the drive shaft through the first cross support; and the screen drum is fixedly connected to the rear of the drive shaft through the second cross support.

[0011] According to the above technical solution, the small particle discharge hopper is placed inside the large particle discharge hopper, the top opening of which is placed directly below the screen cylinder, and the bottom discharge port thereof passes through the side wall of the large particle discharge hopper.

[0012] According to the above technical solution, an inspection door is provided on the side wall of the large particle discharge hopper.

[0013] According to the above technical solution, the long spiral blades are in the shape of arc-shaped belts, and a plurality of first spiral channels for backward transmission are formed between the plurality of long spiral blades.

[0014] According to the above technical solution, the dust raising plate is in the shape of a folded plate, and a plurality of second spiral channels for backward transmission are formed between the plurality of dust raising plates.

[0015] According to the above technical solution, the short spiral blades are in the shape of trapezoidal plates, and a plurality of third spiral channels for backward transmission are formed between the short spiral blades.

[0016] According to the above technical solution, the screen cylinder includes a cylinder frame and a screen sheet. The cylinder frame is provided with a fixing groove, and the screen sheet is inserted into the fixing groove and fixed.

[0017] The beneficial effect of the present invention is that the long spiral blades and short spiral blades used in the present invention can greatly enhance the screening efficiency of materials. In addition, the design of the dust raising plate can make the materials separate from the materials through sufficient collision during the screening process, and fully raise and mix them in the transmission wind, and then the dust can be discharged from the exhaust pipe through the transmission wind, thereby achieving the dust removal function. The dust removal effect of this scheme is better than that of the existing scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the external structure of an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the longitudinal section structure of an embodiment of the present invention;

[0020] Figure 3 It is a structural schematic diagram of a driving mechanism and a feeding bin according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a long spiral blade according to an embodiment of the present invention;

[0022] Figure 5 is a schematic structural diagram of a dust-raising plate according to an embodiment of the present invention;

[0023] Figure 6 is a schematic structural diagram of a short spiral blade according to an embodiment of the present invention;

[0024] Figure 7 1 is a distribution structure diagram of the long spiral blades, dust-raising plates and short spiral blades of an embodiment of the present invention;

[0025] Figure 8 is a schematic structural diagram of a screen cylinder according to an embodiment of the present invention;

[0026] In the figure: 1-frame, 2-drive motor, 3-drive shaft, 4-air supply bin, 5-discharge bin, 6-screen drum, 7-drum, 8-feed bin; 31-axle seat, 32-first cross support, 33-second cross support, 41-air supply pipe, 51-air outlet pipe, 52-small particle discharge hopper, 53-large particle discharge hopper, 54-inspection door, 61-drum rack, 62-screen sheet, 63-short spiral blade, 71-long spiral blade, 72-dust plate. DETAILED DESCRIPTION

[0027] A specific implementation of the present invention is explained in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1 and 2 As shown, a drum-type screening dust removal integrated device disclosed in the present invention is installed as a whole on a frame 1, on which a driving motor 2 is installed, and the driving motor 2 is connected to a driving shaft 3 to drive the driving shaft 3 to rotate. Both ends of the driving shaft 3 are fixed to the frame 1 through shaft seats 31.

[0029] The front end of the frame 1 is provided with an air supply bin 4, which is fixed on the frame 1 and does not rotate with the drive shaft 3. The rear end of the frame 1 is provided with a discharge bin 5, in which a screen cylinder 6 is installed. A roller 7 is provided above the middle of the frame 1. The roller 7 and the screen cylinder 6 are fixedly mounted on the drive shaft 3 through a first cross support 32 and a second cross support 33, respectively, and can rotate synchronously with the drive shaft 3.

[0030] The front panel and bottom of the air supply bin 4 are equipped with a plurality of air supply pipes 41, which are connected to the air outlet of the external fan. The feed bin 8 is obliquely inserted into the air supply bin 4 from the top of the air supply bin 4, and its bin body passes through the bottom of the air supply bin 4 and is connected to the inner cavity of the drum 7.

[0031] like Figure 3 As shown, the feed bin 8 is in a herringbone shape, and its top feed port is placed on the top of the air supply bin 4. The lower part of the feed bin 8 includes two feed channels, and the two feed channels are respectively placed on both sides of the drive shaft 3. In addition, the inner wall of the feed channel is provided with a plurality of step plates 81, and the step plates 81 are inclined downward. The design of the step plates can enhance the separation of dust and materials in the feeding stage.

[0032] In order to enhance the screening efficiency and dust removal function, the interior of the drum 7 and the screen drum 6 are specially designed. The specific structure is as follows:

[0033] A plurality of long spiral blades 71 and a plurality of dust-raising plates 72 are fixed on the inner wall of the drum 7. The shape of the long spiral blades 71 is as follows: Figure 4 As shown in FIG. 1 , the dust-raising plate 72 is in an arc-shaped belt shape, and a plurality of first spiral channels for backward transmission are formed between the plurality of long spiral blades 71. The shape of the dust-raising plate 72 is as follows: Figure 5 As shown, it is in the shape of a folded plate, and a plurality of second spiral channels for backward transmission are formed between the plurality of dust raising plates 72 .

[0034] like Figure 8 As shown, the screen cylinder 6 includes a cylinder frame 61 and a screen sheet 62. The cylinder frame 61 is provided with a fixing groove, and the screen sheet 62 is inserted into the fixing groove and fixed on the cylinder frame. A plurality of short spiral blades 63 are installed on the inner wall of the screen cylinder 6, and the two ends of the short spiral blades 63 are fixed on the cylinder frame 61. The shape of the short spiral blades 63 is as shown in FIG. Figure 6 As shown, it is in the shape of a trapezoidal plate, and a plurality of third spiral channels for backward transmission are formed between a plurality of short spiral blades 63 .

[0035] The distribution structures of the first spiral channel, the second spiral channel and the third spiral channel respectively formed by a plurality of long spiral blades, dust-raising plates and short spiral blades are as follows: Figure 7 shown.

[0036] like Figure 1 and 2 As shown, an air outlet pipe 51 is provided at the top of the discharge bin 5, and the air outlet pipe 51 is connected to an external dust collection device. A small particle discharge hopper 52 and a large particle discharge hopper 53 are provided at the bottom of the discharge bin 5. The small particle discharge hopper 52 is placed inside the large particle discharge hopper, and its top opening is placed directly below the screen cylinder 6, and its bottom discharge port is located on the side wall of the large particle discharge hopper 53. An inspection door 54 is provided on the side wall of the large particle discharge hopper 53.

[0037] The working principle of the present invention is as follows: start the external fan and the driving motor, and the wind is sent in from the air supply pipe 41 and enters the drum 7 through the air supply bin 4. The material to be screened enters the drum 7 from the feed bin 8, the material turns over in the drum 7, and is transported backward through the first spiral channel formed by the long spiral blades, and continues to collide with the dust plate 72 in the drum 7, so that the dust attached to the surface of the material is separated from it and suspended in the air in the drum 7. Under the action of the transmission wind, the dust passes through the screen cylinder 6 into the discharge bin 5 with the wind, and is discharged from the air outlet pipe 51 to the external dust collection device. The material continues to enter the screen cylinder 6 through the second spiral channel formed by the dust plate 72 in the drum 7, and the small particles of the material in the screen cylinder 6 will fall into the small particle discharge hopper 52 through the screen sheet 62 for discharge, and the large particles of the material will fall into the large particle discharge hopper 53 through the third spiral channel under the guidance of the short spiral blades 63 for discharge.

[0038] The above shows and describes the basic principle and main features of the present solution and the advantages of the present solution. Those skilled in the art should understand that the present solution is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the present solution. Without departing from the spirit and scope of the present solution, the present solution may have various changes and improvements, which fall within the scope of the present solution to be protected. The scope of protection of the present solution is defined by the attached claims and their equivalents.

Claims

1. A drum-type screening and dust removal integrated device, comprising a frame, a drum, a screen drum, a drive shaft and a drive motor; characterized in that: The cam is provided with an air outlet pipe, and a small air outlet pipe is provided at the bottom of the cam, and a small air outlet pipe is provided at the bottom of the cam. The feed bin is in a herringbone shape, with a feed port on the top thereof, which is placed on the top of the air supply bin; the lower part of the feed bin includes two feed channels, and the two feed channels are respectively placed on both sides of the drive shaft; the inner wall of the feed channel is provided with a plurality of step plates, and the step plates are inclined downward; The long spiral blades are in the shape of arc-shaped belts, and a plurality of first spiral channels for backward transmission are formed between the plurality of long spiral blades; The dust raising plate is in the shape of a folded plate, and a plurality of second spiral channels for backward transmission are formed between the plurality of dust raising plates; The short spiral blades are in the shape of trapezoidal plates, and a plurality of third spiral channels for backward transmission are formed between the short spiral blades.

2. A drum-type screening and dust removal integrated device as claimed in claim 1, characterized in that: The front and rear parts of the driving shaft are respectively provided with a first cross support and a second cross support; the drum is fixedly connected to the front part of the driving shaft via the first cross support; and the screen drum is fixedly connected to the rear part of the driving shaft via the second cross support.

3. A drum-type screening and dust removal integrated device as claimed in claim 1, characterized in that: The small particle discharge hopper is placed in the large particle discharge hopper, the top opening of which is placed directly below the screen cylinder, and the bottom discharge port of which passes through the side wall of the large particle discharge hopper.

4. A drum-type screening and dust removal integrated device as claimed in claim 3, characterized in that: An inspection door is provided on the side wall of the large particle discharge hopper.

5. The drum-type screening and dust removal integrated device according to claim 1, characterized in that: The screen cylinder comprises a cylinder frame and a screen sheet. The cylinder frame is provided with a fixing groove, and the screen sheet is inserted into the fixing groove and fixed.

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