Flour outlet dust collection device

Abstract

The utility model discloses a flour outlet dust collection device which comprises a flour discharging pipe, a dust collection cover is sleeved on the outer wall of the flour discharging pipe, the lower end of the dust collection cover is provided with a horn mouth, an annular sealing plate is coaxially arranged on the inner wall of the upper end of the dust collection cover, and the annular sealing plate is sleeved on the outer wall of the flour discharging pipe through a center hole of the annular sealing plate to be fixed. A plurality of filter cylinders are arranged at the bottom of the annular sealing plate in the circumferential direction, each filter cylinder is sleeved with a filter cloth bag, the upper end of each filter cylinder is fixedly connected with the annular sealing plate, an air outlet is formed in the annular sealing plate right opposite to an opening in the upper end of each filter cylinder, and the air outlet is connected with a negative pressure fan through an exhaust pipe; an inverted receiving hopper is arranged in the dust hood, the lower end of the receiving hopper sleeves the flour discharging pipe, the upper end of the receiving hopper is fixedly connected with the inner wall of the dust hood, the lower end of the receiving hopper is connected with a discharging pipe, and a dust collecting cloth bag is arranged at the lower end of the discharging pipe. Dust at the flour discharge port can be rapidly collected, the dust collection energy consumption is low, and the dust collection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of flour dust removal equipment, in particular to a flour outlet dust suction device. Background Art

[0002] Flour is an indispensable and important food ingredient. Flour can be used to make a variety of delicious foods. Flour includes sorghum flour, buckwheat flour, millet flour, oat flour, black bean flour, black rice flour, mung bean flour, etc. The flour making process mainly includes cleaning, grinding, and screening. Flour is made through high square sieves, flour purifiers, grinders and other equipment.

[0003] At present, the flour processing process is prone to dust generation, and the high dust concentration is a problem that needs to be paid great attention to. Long-term exposure to such an environment will not only have a serious impact on the health of workers. In addition, the discharge process will cause a large dust concentration to be generated at the flour discharge pipe, which cannot completely absorb the dust and has dust escape. Moreover, when sucking dust, the fan cannot be matched according to the dust concentration, resulting in continuous operation of the fan, high energy consumption, and dust is easily adsorbed on the dust collector and difficult to clean, reducing the dust removal efficiency. Utility Model Content

[0004] The utility model provides a flour outlet dust suction device, which solves the problems that the traditional dust removal device cannot quickly remove the dust at the flour outlet, has low dust removal efficiency and high energy consumption of the dust removal equipment.

[0005] The utility model provides a flour outlet dust suction device, comprising a flour discharge pipe, the outer wall of the flour discharge pipe is sleeved with a dust suction hood, the lower end of the dust suction hood is arranged as a bell mouth, the upper inner wall of the dust suction hood is coaxially arranged with an annular sealing plate, the annular sealing plate is sleeved and fixed on the outer wall of the flour discharge pipe through its center hole, a plurality of filter cylinders are arranged on the bottom of the annular sealing plate along the circumferential direction, each filter cylinder is sleeved with a filter bag on the outside, the upper end of each filter cylinder is fixedly connected with the annular sealing plate, an air outlet is provided on the annular sealing plate directly facing the upper end opening of each filter cylinder, the air outlet is connected with a negative pressure fan arranged on the annular sealing plate through an exhaust pipe, an inverted receiving hopper is arranged in the dust suction hood, the lower end of the receiving hopper is sleeved on the flour discharge pipe, the upper end of the receiving hopper is fixedly connected with the inner wall of the dust suction hood, the lower end of the receiving hopper is connected with the feeding pipe, a dust collecting bag is arranged on the lower end of the feeding pipe, the dust collecting bag is sleeved on the outer wall of the flour discharge pipe, the upper end of the dust collecting bag is fixedly connected with the feeding pipe, and the lower end is fixedly connected with the flour discharge pipe.

[0006] In the above technical solution, further, a plurality of pneumatic vibrators are arranged on the outer wall of the dust hood.

[0007] In the above technical solution, further, the upper end of the dust collecting bag is fixedly connected to the discharge pipe through a first throat hoop, and the lower end of the dust collecting bag is fixedly connected to the flour discharge pipe through a second throat hoop.

[0008] In the above technical solution, further, a cleaning ring is coaxially sleeved on the outside of each filter cylinder, a plurality of radial bristles are arranged on the inner wall of the cleaning ring, a vertical electric push rod is arranged on the annular sealing plate, the lower end of the electric push rod passes through the annular sealing plate and extends into the dust hood, a horizontal connecting rod is arranged at the lower end of the electric push rod, one end of the connecting rod is fixedly connected to the telescopic end of the electric push rod, and the other end is fixedly connected to the outer wall of the cleaning ring.

[0009] In the above technical solution, further, the outer wall of the upper end of the receiving hopper is covered with dust suction holes along the circumferential direction.

[0010] In the above technical solution, further, a plurality of dust concentration detection sensors are arranged on the inner wall of the dust hood.

[0011] It can be seen from the above technical solutions that the utility model provides a flour outlet dust suction device.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By installing the dust hood at the lower end of the flour discharge pipe, the dust filtered by the filter cylinder and the filter bag is collected through the receiving hopper to achieve rapid dust collection. The pneumatic vibrator is controlled by the controller to vibrate the side wall of the hopper, and the dust can be quickly collected into the dust collecting bag. The dust collection and dust removal efficiency is high and there will be no dust escape.

[0014] 2. The dust concentration entering the dust hood is detected by the dust concentration detection sensor, and the speed of the negative pressure fan is controlled by frequency conversion to achieve reasonable configuration of negative pressure wind force and achieve the purpose of energy saving and consumption reduction.

[0015] 3. The electric push rod drives the cleaning ring to move up and down around the filter cylinder to clean the filter bag, keep the filter holes of the filter bag transparent, increase the dust removal efficiency, and prevent the filter holes of the filter bag from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a flour outlet dust suction device proposed by the utility model;

[0018] Figure 2 For the utility model Figure 1 A local enlarged schematic diagram of position Ⅰ;

[0019] Figure 3 For the utility model Figure 1 A local enlarged schematic diagram of position II;

[0020] Figure 4 This is a schematic diagram of the top view structure of a cleaning ring of a flour outlet dust suction device proposed by the utility model.

[0021] In the figure:

[0022] 1-Flour discharge pipe;

[0023] 2-Dust hood;

[0024] 3-annular sealing plate; 31-air outlet; 32-exhaust pipe; 33-negative pressure fan;

[0025] 4-filter cylinder; 41-filter bag;

[0026] 5-receiving hopper; 51-feeding pipe; 52-dust collecting bag; 53-dust suction hole; 54-first throat hoop; 55-second throat hoop;

[0027] 6-Pneumatic vibrator;

[0028] 7-cleaning ring; 71-brush; 72-electric push rod; 73-connecting rod;

[0029] 8-Dust concentration detection sensor. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0031] Embodiment 1:

[0032] See also Figure 1-4A flour outlet dust suction device comprises a flour discharge pipe 1, a dust cover 2 is sleeved on the outer wall of the flour discharge pipe 1, the lower end of the dust cover 2 is set as a bell mouth, an annular sealing plate 3 is coaxially arranged on the inner wall of the upper end of the dust cover 2, the annular sealing plate 3 is sleeved on the outer wall of the flour discharge pipe 1 through its center hole and fixed, a plurality of filter cylinders 4 are arranged on the bottom of the annular sealing plate 3 along the circumferential direction, each of the filter cylinders 4 is sleeved with a filter bag 41, and the upper end of each filter cylinder 4 The annular sealing plate 3 is fixedly connected to the annular sealing plate 3, and an air outlet 31 is provided on the annular sealing plate 3 facing the upper end opening of each filter cylinder 4. The air outlet 31 is connected to the negative pressure fan 33 arranged on the annular sealing plate 3 through an exhaust pipe 32. An inverted receiving hopper 5 is arranged in the dust hood 2, and the lower end of the receiving hopper 5 is jacketed on the flour discharge pipe 1. The upper end of the receiving hopper 5 is fixedly connected to the inner wall of the dust hood 2, and the lower end of the receiving hopper 5 is connected to the discharge pipe 51. The lower end of the discharge pipe 51 is A dust collecting bag 52 is provided, and the dust collecting bag 52 is sleeved on the outer wall of the flour discharge pipe 1. The upper end of the dust collecting bag 52 is fixedly connected to the discharge pipe 51, and the lower end is fixedly connected to the flour discharge pipe 1. After the dust passes through the filter bag 41 on the filter cylinder 4, it is adsorbed on the outer wall of the filter bag 41. The cleaning ring 7 is driven by the electric push rod 72 to move up and down around the periphery of the filter cylinder 4. The cleaning ring 7 quickly cleans the dust adhered to the filter bag 41 through the brush 71, and keeps the filter bag 41 The filter holes are transparent, which increases the dust removal efficiency and prevents the filter holes of the filter bag 41 from being blocked. At the same time, the dust concentration entering the dust hood 2 is detected by the dust concentration detection sensor 8, and the dust concentration is fed back to the PLC controller. The PLC controller frequency controls the speed of the negative pressure fan to achieve a reasonable configuration of the negative pressure wind force and achieve the purpose of energy saving and consumption reduction. The dust powder falling off the filter bag 41 falls on the inner wall of the receiving hopper 5 and is collected by the dust collecting bag 52. The collection efficiency is high and it is convenient to use.

[0033] In this embodiment, see Figure 1 , a plurality of pneumatic vibrators 6 are arranged on the outer wall of the dust hood 2. The pneumatic vibrators 6 are existing commercially available equipment. The principle of the pneumatic vibrators 6 is to use the high-pressure gas discharged from the air compressor to access the air inlet of the pneumatic vibrator through the air pipe. When the gas pushes the piston upward, the gas in the air chamber on the piston is squeezed, and the squeezed gas is discharged through the exhaust hole. When the piston moves upward to the end point, the gas automatically switches the ventilation direction through the groove and the airway, so that the gas enters the air chamber on the piston. The high-pressure gas pushes the piston downward to the end point. The first cycle ends and the second cycle begins. The continuous reciprocating cycle in sequence causes the vibrator to produce translation and shaking, thereby generating vibration force. By evenly distributing and installing four pneumatic vibrators 6 around the dust hood 2, when dust is adhered to the inner wall of the dust hood 2, the dust hood 2 can be vibrated and cleaned by the pneumatic vibrators 6.

[0034] In this embodiment, see Figure 3 The upper end of the dust collecting bag 52 is fixedly connected to the discharge pipe 51 through a first throat hoop 54. Specifically, the first throat hoop 54 fastens the dust collecting bag 52 to the outer wall of the discharge pipe 51 outside the dust collecting bag 52 through an outer hoop. The lower end of the dust collecting bag 52 is fixedly connected to the flour discharge pipe 1 through a second throat hoop 55. The first throat hoop 54 and the second throat hoop 55 are both existing commercially available equipment. Dust enters the dust collecting bag 52 through the gap between the discharge pipe 51 and the flour discharge pipe 1 for collection. The collection efficiency is high and the collected dust material is convenient to use.

[0035] In this embodiment, see Figure 1 , 2 4. A cleaning ring 7 is coaxially sleeved on the outside of each filter cylinder 4, and a plurality of radial bristles 71 are arranged on the inner side wall of the cleaning ring 7. A vertical electric push rod 72 is arranged on the annular sealing plate 3, and the lower end of the electric push rod 72 passes through the annular sealing plate 3 and extends into the dust hood 2. A horizontal connecting rod 73 is arranged on the lower end of the electric push rod 72, and one end of the connecting rod 73 is fixedly connected to the telescopic end of the electric push rod 72, and the other end is fixedly connected to the outer side wall of the cleaning ring 7. The cleaning ring 7 is driven by the electric push rod 72 to move up and down around the periphery of the filter cylinder 4, and the cleaning ring 7 quickly cleans the dust adhered to the filter bag 41 through the bristles 71, so as to keep the filter holes of the filter bag 41 transparent, increase the dust removal efficiency, and prevent the filter holes of the filter bag 41 from being blocked.

[0036] In this embodiment, see Figure 2 The outer wall of the upper end of the receiving hopper 5 is covered with dust suction holes 53 along the circumferential direction, and the dust is concentrated and introduced into the dust hood 2 from the dust suction holes 53 at the upper end of the receiving hopper 5, ensuring that the negative pressure wind force will not fluctuate too much, ensuring the stability of the negative pressure wind force, and preventing the dust from being disordered during the guidance of the negative pressure wind force.

[0037] In this embodiment, see Figure 1 A plurality of dust concentration detection sensors 8 are arranged on the inner wall of the dust hood 2. The dust concentration detection sensor 8 is an existing commercially available device. The dust concentration entering the dust hood 2 is captured and fed back to the PLC controller. The PLC controller controls the speed of the negative pressure fan by frequency conversion to realize reasonable configuration of the negative pressure wind force and achieve the purpose of energy saving and consumption reduction.

[0038] It can be seen from the above technical scheme that when in use, first, the negative pressure fan is turned on, and the dust passes through the dust suction hole 53 and enters the dust suction hood 2. Then, under the action of the negative pressure wind force, the dust is filtered by the filter bag 41 on the filter cylinder 4 and adsorbed on the outer wall of the filter bag 41. The cleaning ring 7 is driven by the electric push rod 72 to move up and down around the periphery of the filter cylinder 4. The cleaning ring 7 quickly cleans the dust adhered to the filter bag 41 through the bristles 71, keeps the filter holes of the filter bag 41 transparent, increases the dust removal efficiency, and prevents the filter holes of the filter bag 41 from being blocked. At the same time, the dust concentration entering the dust suction hood 2 is detected by the dust concentration detection sensor 8, and the dust concentration is reflected back The signal is fed to the PLC controller, and the PLC controller controls the speed of the negative pressure fan by frequency conversion to realize the reasonable configuration of the negative pressure wind force and achieve the purpose of energy saving and consumption reduction. The dust powder falling off the filter bag 41 falls on the inner wall of the receiving hopper 5, and the pneumatic vibrator 6 is controlled by the controller to vibrate the side wall of the receiving hopper 5. Under the vibration force of the pneumatic vibrator 6, the dust powder slides along the inner wall of the receiving hopper 5 into the discharge pipe 51 and enters the dust collecting bag 52. When a certain amount of dust is collected in the dust collecting bag 52, the packaging bag is connected to the lower end of the flour discharge pipe 1, and then the first throat clamp at the lower end of the dust collecting bag 52 is loosened to release the collected dust into the packaging bag.

[0039] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope of the present invention is indicated by the claims.

[0040] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A flour outlet dust suction device, comprising a flour discharge pipe (1), characterized in that: The outer wall of the flour discharge pipe (1) is sleeved with a dust hood (2), the lower end of the dust hood (2) is arranged as a bell mouth, the inner wall of the upper end of the dust hood (2) is coaxially arranged with an annular sealing plate (3), the annular sealing plate (3) is sleeved and fixed on the outer wall of the flour discharge pipe (1) through its center hole, a plurality of filter cylinders (4) are arranged at the bottom of the annular sealing plate (3) along the circumferential direction, each of the filter cylinders (4) is sleeved with a filter bag (41) on the outside, the upper end of each filter cylinder (4) is fixedly connected to the annular sealing plate (3), and an air outlet (31) is provided on the annular sealing plate (3) facing the upper end of each filter cylinder (4). The air outlet (31) is connected to the negative pressure fan (33) arranged on the annular sealing plate (3) through an exhaust pipe (32); an inverted receiving hopper (5) is arranged in the dust hood (2); the lower end of the receiving hopper (5) is sleeved on the flour discharge pipe (1); the upper end of the receiving hopper (5) is fixedly connected to the inner wall of the dust hood (2); the lower end of the receiving hopper (5) is connected to the discharge pipe (51); a dust collecting bag (52) is arranged at the lower end of the discharge pipe (51); the dust collecting bag (52) is sleeved on the outer wall of the flour discharge pipe (1); the upper end of the dust collecting bag (52) is fixedly connected to the discharge pipe (51); and the lower end is fixedly connected to the flour discharge pipe (1).

2. A flour outlet dust suction device according to claim 1, characterized in that: A plurality of pneumatic vibrators (6) are arranged on the outer wall of the dust hood (2).

3. A flour outlet dust suction device according to claim 1, characterized in that: The upper end of the dust collecting bag (52) is fixedly connected to the discharge pipe (51) via a first throat hoop (54), and the lower end of the dust collecting bag (52) is fixedly connected to the flour discharge pipe (1) via a second throat hoop (55).

4. A flour outlet dust suction device according to claim 1, characterized in that: A cleaning ring (7) is coaxially sleeved on the outside of each filter cylinder (4), and a plurality of radial bristles (71) are arranged on the inner wall of the cleaning ring (7). A vertical electric push rod (72) is arranged on the annular sealing plate (3), and the lower end of the electric push rod (72) passes through the annular sealing plate (3) and extends into the dust cover (2). A horizontal connecting rod (73) is arranged at the lower end of the electric push rod (72), and one end of the connecting rod (73) is fixedly connected to the telescopic end of the electric push rod (72), and the other end is fixedly connected to the outer wall of the cleaning ring (7).

5. A flour outlet dust suction device according to claim 1, characterized in that: The outer wall of the upper end of the receiving hopper (5) is covered with dust suction holes (53) along the circumferential direction.

6. A flour outlet dust suction device according to claim 1, characterized in that: A plurality of dust concentration detection sensors (8) are arranged on the inner side wall of the dust collection hood (2).

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