Dust removal device for specific gravity screen

Abstract

The utility model discloses a dust removal device for a specific gravity screen, which relates to the field of specific gravity screens and comprises a stock bin, a dust hood, a dust suction pipe, a fan and a mounting frame mounted on an outer shell of the specific gravity screen, and the stock bin, the dust hood and the fan are sequentially mounted at the top of the mounting frame from right to left; a feeding port is formed in the top of the stock bin, a discharging pipe is installed at a discharging port in the bottom of the stock bin, a first-stage material distributing plate is arranged below the feeding port, and the first-stage material distributing plate is fixedly installed on the left side of the inner wall of the stock bin. According to the grain screening machine, the phenomena of accumulation and non-uniform distribution of grains on the screen surface are reduced, the dust collection cover is directly connected with the discharging pipe, dust and impurities can be effectively captured in the process that the grains enter the dust collection cover, the possibility that the dust escapes into the air is reduced, and therefore the flowing path of the grains is optimized, and the dust removal effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of specific gravity sieve, more particularly to a dust collector for specific gravity sieve. BACKGROUND

[0002] In the grain processing industry, specific gravity sieve is a commonly used equipment, which is used for screening and separating according to the specific gravity difference of grain particles. However, in the working process of specific gravity sieve, dust and light impurities are often mixed in the grain, which not only affects the screening effect, but also adversely affects the working environment and the health of the operator. Therefore, the application of dust collector in specific gravity sieve is particularly important.

[0003] The existing dust collector usually installs a dust hood above the specific gravity sieve to adsorb the dust and impurities on the sieve surface.

[0004] Although this design can reduce the spread of dust to some extent, there are still some problems. Since the coverage range of the dust hood is limited, after the grain falls onto the sieve surface, the grain has not completely spread out and there is a certain accumulation, which causes the dust hood to be unable to effectively adsorb the dust mixed in the grain.

[0005] Therefore, the existing dust collector needs to be improved. INVENTION CONTENTS

[0006] In view of the problem that the existing dust collector cannot effectively adsorb the dust mixed in the grain due to the limited coverage range of the dust hood after the grain falls onto the sieve surface, the utility model provides a dust collector for specific gravity sieve.

[0007] The utility model adopts the scheme to solve the technical problem: a dust collector for specific gravity sieve, including stock bin, dust hood, dust suction pipe, fan and mounting rack mounted on the specific gravity sieve shell, the stock bin, dust hood and fan are installed in the top of mounting rack from right to left in turn;

[0008] The top of the stock bin is provided with a feed inlet, and a discharge pipe is installed at the bottom of the stock bin. A first distribution plate is arranged below the feed inlet and fixedly installed on the left inner wall of the stock bin. The front end, rear end and right end of the first distribution plate have gaps with the inner cavity of the stock bin for discharging.

[0009] A connecting port is formed in the right side wall of the dust hood, and the lower end of the discharge pipe is connected to the connecting port. The top opening of the dust hood is connected to one end of the dust suction pipe, and the other end of the dust suction pipe is installed at the air suction port of the fan.

[0010] Preferably, a secondary distribution plate is arranged below the connecting port and fixedly installed on the inner wall of the dust cover.

[0011] Preferably, a splash-proof cover is installed on the top of the feeding port.

[0012] Preferably, observation windows are arranged on the front and rear sides of the dust cover.

[0013] Preferably, the mounting frame comprises two parallel arranged cross beams, a plurality of mounting feet are fixedly installed on the bottom of the cross beams, two mounting rods and two connecting rods are fixedly installed between the front and rear cross beams, the fan is installed between the two mounting rods, two supporting rods are fixedly installed between the two connecting rods, and the hopper and the dust cover are fixedly installed between the two connecting rods and the two supporting rods.

[0014] Preferably, the specific gravity sieve is a blowing type specific gravity sieve.

[0015] Preferably, the application further comprises a feeding device, and the discharge end of the feeding device corresponds to the feeding port.

[0016] Preferably, the feeding device is any one of a belt conveyor, a screw conveyor and a Z-shaped elevator.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] 1. By arranging a primary distribution plate in the hopper, the grains can be uniformly distributed before entering the dust cover, the accumulation and uneven distribution of the grains on the sieve surface are reduced, the dust cover is directly connected with the discharging pipe, the dust and impurities can be effectively captured during the process of the grains entering the dust cover, the possibility of the dust escaping into the air is reduced, the flow path of the grains is optimized, and the dust removal effect is improved.

[0019] 2. By arranging a secondary distribution plate, the grains discharged from the discharging pipe are further dispersed, so that the dust cover can capture the dust on the secondary distribution plate and the sieve surface. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole three-dimensional structure schematic view of the application;

[0021] Figure 2 It is a front view cross-sectional three-dimensional structure schematic view of the application;

[0022] Figure 3 It is a right view cross-sectional three-dimensional structure schematic view of the application;

[0023] Figure 4 It is an installation state schematic view of the application.

[0024] In the diagram: 11 Crossbeam, 12 Mounting foot, 13 Connecting rod, 14 Support rod, 15 Mounting rod, 21 Hopper, 22 Splash guard, 23 Primary material distribution plate, 24 Discharge pipe, 31 Dust suction hood, 32 Secondary material distribution plate, 33 Connection port, 34 Observation window, 4 Dust suction pipe, 5 Fan, 6 Blowing-type gravity screen. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Please see Figures 1-4 This utility model provides a technical solution for a dust removal device used in a gravity screen:

[0027] Example 1:

[0028] according to Figures 1-4 As shown, it includes a hopper 21, a dust collection hood 31, a dust collection pipe 4, a blower 5, and a mounting bracket installed on the outer shell of the gravity screen. The gravity screen is a blower-type gravity screen 6, which can blow dust from the grain onto the screen surface so that the dust collection hood 31 can capture the dust.

[0029] The mounting frame includes two parallel crossbeams 11. Multiple mounting feet 12 are fixedly installed at the bottom of the crossbeams 11. The mounting feet 12 can be installed on the outer shell of the blower-type gravity screen 6 by bolts or other fasteners. Two mounting rods 15 and two connecting rods 13 are fixedly installed between the front and rear crossbeams 11. The blower 5 is installed between the two mounting rods 15. Two support rods 14 are fixedly installed between the two connecting rods 13. The hopper 21 and the dust collection hood 31 are fixedly installed between the two connecting rods 13 and the two support rods 14.

[0030] The top of the hopper 21 is provided with a feed inlet, and the bottom of the hopper is provided with a discharge pipe 24. A splash guard 22 is installed on the top of the feed inlet, and a primary distribution plate 23 is provided below the feed inlet. The primary distribution plate 23 is fixedly installed on the left side of the inner wall of the hopper 21. The front end, rear end and right end of the primary distribution plate 23 have gaps with the inner cavity of the hopper 21 for feeding. By setting the primary distribution plate 23 in the hopper 21, the grain can be evenly distributed before entering the dust collection hood 31, reducing the accumulation and uneven distribution of grain on the screen surface. It can not only provide dust removal effect, but also provide screening effect.

[0031] The right side wall of the dust collection hood 31 is provided with a connection port 33, which is connected to the lower end of the feed pipe 24. The top opening of the dust collection hood 31 is connected to one end of the dust collection pipe 4, and the other end of the dust collection pipe 4 is installed at the air intake of the fan 5. The dust collection hood 31 is directly connected to the feed pipe 24. During the process of grain entering the dust collection hood 31, dust and impurities can be effectively captured, reducing the possibility of dust escaping into the air, thereby optimizing the flow path of the grain and improving the dust removal effect.

[0032] In practical use, the dust removal device for a gravity screen of this utility model is first installed on the gravity screen, then the fan 5 is started, and at the same time the grain falls into the primary distribution plate 23 through the feed inlet. Under the action of the primary distribution plate 23, the grain is dispersed and falls into the hopper 21, and then falls into the dust collection hood 31 through the discharge pipe 24.

[0033] The negative pressure (suction) generated by the fan 5 draws the dust into the dust collection hood 31. The dust then enters the dust collection pipe 4 with the airflow, and finally, under the action of the fan 5, the dust enters the bag filter.

[0034] Example 2:

[0035] Based on Example 1, the differences are as follows: Figure 1 and Figure 2 As shown, a secondary material distribution plate 32 is provided below the connection port 33. The secondary material distribution plate 32 is fixedly installed on the inner wall of the dust collection hood 31. By setting the secondary material distribution plate 32, the grain discharged from the discharge pipe 24 is further dispersed, so that the dust collection hood 31 can capture the dust on the secondary material distribution plate 32 and the screen surface.

[0036] The dust cover 31 has observation windows 34 on both the front and back sides.

[0037] Example 3:

[0038] Based on Embodiment 1, the difference is as follows: it also includes a feeding device, the discharge end of which corresponds to the inlet. The feeding device can be any one of a belt conveyor, a screw conveyor, or a Z-shaped elevator.

Claims

1. A dust removal device for a specific gravity sieve, comprising a hopper, a dust hood, a dust suction pipe, a fan and a mounting bracket mounted on the specific gravity sieve outer shell, characterized in that: The silo, dust hood and fan are installed in sequence from right to left on the top of the mounting frame; The top of the silo is provided with a feeding port, and the bottom discharge port is provided with a discharge pipe. A first distribution plate is arranged below the feeding port and is fixedly installed on the left inner wall of the silo. The front end, rear end and right end of the first distribution plate are spaced apart from the inner cavity of the silo for discharging. The right side wall of the dust hood is provided with a connecting port connected with the lower end of the discharge pipe. The top of the dust hood is connected with one end of a dust suction pipe. The other end of the dust suction pipe is installed at the air suction port of the fan.

2. A dust extraction device for a gravity screen as claimed in claim 1, characterised in that: A second distribution plate is arranged below the connecting port and is fixedly installed on the inner wall of the dust hood.

3. A dust extraction device for a gravity screen as claimed in claim 1, characterised in that: A splash-proof cover is installed on the top of the feeding port.

4. A dust extraction device for a gravity screen as claimed in claim 1, characterised in that: Observation windows are arranged on the front and rear sides of the dust hood.

5. The dust extraction device for a gravity screen according to claim 1, characterized in that: The mounting frame comprises two parallel arranged cross beams. The bottom of the cross beams is fixedly provided with a plurality of mounting feet. Two mounting rods and two connecting rods are fixedly arranged between the front and rear cross beams. The fan is installed between the two mounting rods. Two supporting rods are fixedly arranged between the two connecting rods. The silo and the dust hood are fixedly installed between the two connecting rods and the two supporting rods.

6. A dust extraction device for a gravity screen as claimed in claim 1, characterised in that: The specific gravity sieve is a blowing type specific gravity sieve.

7. A dust extraction device for a gravity screen according to claim 1 or 3, characterised in that: The feeding device is further included. The discharge end of the feeding device corresponds to the feeding port.

8. A dust extraction device for a gravity screen as claimed in claim 7, characterised in that: The feeding device is any one of a belt conveyor, a screw conveyor and a Z-shaped elevator.

Images