A dust removal system for a pipe pile grinding sand drying machine

Abstract

The utility model discloses a dust removal system for a pipe pile grinding fine sand dryer, comprising a dryer, a smoke inlet being arranged on the left side of the dryer, a wet sand and gravel inlet being opened at the upper end of the left side, a dry sand and gravel outlet being arranged at the lower end of the right side of the dryer, a smoke pipe being connected to the upper end of the right side, the smoke pipe being connected to a cyclone dust collector, the cyclone dust collector being connected to a fan through a pipe, a spray pipe being connected to the lower end of the fan, the spray pipe being connected to a sealed water pool, and a chimney being connected to one end of the sealed water pool away from the spray pipe. The utility model performs four-stage dust removal treatment on the dust-containing smoke of the dryer through cyclone dust removal, water spraying of the spray pipe, water bathing, water spraying in the chimney, etc., and has a good dust removal effect.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, in particular to a dust removal system of a pipe pile grinding fine sand drying machine. Background Art

[0002] The ground sand used in the production of PHC pipe piles needs to be dried. The dusty flue gas discharged by the dryer includes water vapor, moisture and dust escaped from the heating of sand and gravel. After drying, it becomes dry flue gas and a large amount of dust. The flue gas needs to be dust-removed before it can be discharged into the atmosphere.

[0003] At present, the conventional dryer dust collector is two sets of parallel dust collector groups, one set is a cyclone separator, and the other set is a gravity dust collector. The cyclone separator group plays the purpose of primary sedimentation, and the gravity dust collector group plays the role of secondary sedimentation. In order to allow the water vapor to escape, each set of dust collector groups is equipped with a gas transmission power and a chimney. This dust removal method occupies a large area, is inconvenient to install, has a high equipment price, is easy to clog, has a large workload for use and maintenance, and adopts dry dust removal, which is easy to pollute the working environment and is not good for the health of workers.

[0004] In view of the deficiencies in the prior art, the present application provides a dust removal system which can remove dust efficiently, has a relatively simple process flow, has low system resistance, is not prone to clogging, and has low construction and operating costs. Utility Model Content

[0005] The utility model aims to provide a dust removal system for a pipe pile grinding and fine sand drying machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dust removal system for a pipe pile grinding fine sand dryer, comprising a dryer, a smoke inlet is provided on the left side of the dryer, a wet sand and gravel inlet is opened at the upper end of the left side, a dry sand and gravel outlet is provided at the lower end of the right side of the dryer, and a smoke pipe is connected to the upper end of the right side, the smoke pipe is connected to a cyclone dust collector, the cyclone dust collector is connected to a fan through a pipe, the lower end of the fan is connected to a spray pipe, the spray pipe is connected to a sealed water pool, and the sealed water pool is connected to a chimney at one end away from the spray pipe.

[0007] Furthermore, the spray pipe and the chimney are both provided with nozzles, and the plurality of nozzles are commonly connected to a water inlet pipe, the water inlet pipe is connected to one end of a circulating water pump, and the other end of the circulating water pump is connected to a sedimentation tank.

[0008] Furthermore, the sealing water tank and the sedimentation water tank are connected with an overflow pipe.

[0009] Furthermore, the nozzle is a spiral structure.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) The utility model performs four-stage dust removal treatment on the dust-containing flue gas of the dryer by means of cyclone dust removal, water spraying in a spray pipe, water bathing, and water spraying in a chimney, and the dust removal effect is good.

[0012] (2) After being purified by sedimentation, the water is pumped by a circulating water pump to the nozzle for spraying, thus realizing the recycling of spray water, which is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural diagram of a dust removal system of a pipe pile grinding fine sand drying machine.

[0014] In the figure: dryer 1; flue gas duct 2; cyclone dust collector 3; spray pipe 4; nozzle 5; fan 6; chimney 7; water inlet pipe 8; sealing water tank 9; sedimentation water tank 10; circulating water pump 11; overflow pipe 12; inlet 101; wet sand and gravel inlet 102; dry sand and gravel outlet 103. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1 A dust removal system for a pipe pile grinding sand dryer comprises a dryer 1, which is in the shape of a pipeline and is placed obliquely, and is provided with a spiral guide vane therein. A natural gas inlet 101 is provided on the left side of the dryer 1, a wet sand and gravel inlet 102 is opened at the upper end of the left side, and a dry sand and gravel outlet 103 is provided at the lower end of the right side of the dryer 1. Wet sand and gravel enter through the wet sand and gravel inlet 102, and after being dried in the dryer 1, flow out from the dry sand and gravel outlet 103 at the lower right side. A flue gas pipeline 2 is connected to the upper end of the right side of the dryer 1, and the flue gas pipeline 2 is connected to a cyclone dust collector 3. The cyclone dust collector 3 is connected to a fan 6 through a pipeline, and a spray pipe 4 is connected to the lower end of the fan 6. The spray pipe 4 is connected to a sealed water pool 9, and a chimney 7 is connected to the end of the sealed water pool 9 away from the spray pipe 4.

[0017] Specifically, a nozzle 5 is provided in the spray pipe 4 and the chimney 7. The nozzle 5 has a spiral structure. Multiple nozzles 5 are commonly connected to a water inlet pipe 8. The water inlet pipe 8 is connected to one end of a circulating water pump 11. The other end of the circulating water pump 11 is connected to a sedimentation tank 10. The sealing water tank 9 and the sedimentation water tank 10 are also connected to an overflow pipe 12.

[0018] The present invention performs four-stage dust removal treatment on the dust-containing flue gas of the dryer through cyclone dust removal, spray pipe water spraying, water bath, chimney water spraying, etc. Wet sand and gravel enter from the wet sand and gravel inlet 102, and then flow to the tail (right side) with the rotation of the spiral guide vane in the cylinder and are discharged through the dry sand and gravel outlet 103. The dusty flue gas is sucked by the fan 6 and discharged from the upper part of the tail (right side) of the dryer 1. The dusty flue gas enters the cyclone dust collector 3 through the flue gas pipeline 2 for primary dust removal, and then flows through the spray pipe 4 and is sprayed with water by the nozzle 5 for secondary dust removal. The lower part of the spray pipe 4 is inserted into the sealed water pool 9 for water bath tertiary dust removal. After the dusty flue gas escapes from the water surface, it is sprayed by the nozzle 5 through the chimney 7 for fourth-stage dust removal. The clean flue gas is discharged from the top of the chimney. The dust and water of the second, third and fourth stage dust removal are mixed and sunk into the closed water pool 9 together.

[0019] The closed water pool 9 controls a certain amount of water level to ensure that the depth of the spray pipe 4 inserted into the water is 100-150 mm. The lower part of the spray pipe 4 can be made into a zigzag shape to facilitate the escape of smoke from the water surface. Excess water flows into the sedimentation pool 10 from the overflow pipe 12. After sedimentation and purification, the water is extracted by the circulating water pump 11 for spraying by the nozzle 5, and the spray water is recycled.

[0020] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal system for a pile grinding sand dryer, comprising a dryer (1), wherein the left side of the dryer (1) is provided with an inlet (101), the upper left end is provided with a wet sand and gravel inlet (102), the lower right end of the dryer (1) is provided with a dry sand and gravel outlet (103), the upper right end is connected with a flue gas duct (2), and the characteristics are: The flue gas pipeline (2) is connected to a cyclone dust collector (3), and the cyclone dust collector (3) is connected to a fan (6) through a pipeline. The lower end of the fan (6) is connected to a spray pipe (4), and the spray pipe (4) is connected to a sealed water pool (9). The sealed water pool (9) is connected to a chimney (7) at one end away from the spray pipe (4).

2. The dust removal system of the pipe pile grinding and fine sand drying machine according to claim 1 is characterized in that: The spray pipe (4) and the chimney (7) are both provided with a nozzle (5), and a plurality of the nozzles (5) are connected to a water inlet pipe (8) in common. The water inlet pipe (8) is connected to one end of a circulating water pump (11), and the other end of the circulating water pump (11) is connected to a sedimentation tank (10).

3. The dust removal system of the pipe pile grinding and fine sand drying machine according to claim 2 is characterized in that: The sealing water tank (9) and the sedimentation water tank (10) are also connected by an overflow pipe (12).

4. The dust removal system of the pipe pile grinding and fine sand drying machine according to claim 2 is characterized in that: The nozzle (5) is a spiral structure.

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