Dust deposition prevention device for dust removal pipe of large smoke hood of rotary furnace

Abstract

The utility model relates to a dust deposition prevention device for a dust removal pipe of a large smoke hood of a rotary furnace, which is arranged on the inner side and the outer side of the dust removal pipe and comprises an air main pipe, air branch pipes, a purging pipe and purging holes, the air branch pipes are vertically arranged and upwards extend into the dust removal pipe; a plurality of purging pipes are arranged on the bottom surface of the inner side of the dust removal pipe at intervals, the purging pipes and the air branch pipes are in one-to-one correspondence up and down, the air main pipe is communicated with the purging pipes through the air branch pipes, the end parts of the purging pipes are closed, a plurality of purging holes are formed in the bottoms of the purging pipes at intervals, and the purging holes vertically face the bottom surface of the dust removal pipe and are spaced from the bottom surface of the dust removal pipe by a certain distance; accumulated dust on the bottom surface of the dust removal pipe can be conveniently blown away. According to the dust removal device, accumulated dust in the dust removal pipe can be effectively blown by adopting compressed air, the dust blowing effect can be ensured, dust accumulation is avoided, and the operation stability of equipment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline dust removal, in particular to a dust accumulation prevention device for a large smoke hood dust removal pipe of a rotary furnace. Background Art

[0002] The rotary furnace is a new type of equipment for melting and recycling aluminum slag. When melting and recycling aluminum slag, the furnace body needs to rotate and heat continuously. A large amount of smoke and dust will be generated when the furnace body is running. When a large amount of dust is pumped to the dust collector through the dust removal pipe, some of the dust will settle on the bottom of the dust removal pipe. Long-term operation will cause dust accumulation on the bottom of the dust removal pipe. The dust is difficult to be effectively treated, and then it will accumulate, which not only reduces the effective ventilation area in the pipe, affects the flow rate of the dust removal pipe, and causes excessive pressure on the equipment operation, but also easily causes dust to spontaneously combust, posing a safety hazard. Summary of the invention

[0003] In order to solve the problem that dust is easily accumulated on the bottom surface of the dust removal pipe and is difficult to clean, the utility model provides a dust accumulation prevention device for the dust removal pipe of the large smoke hood of a rotary furnace, which realizes effective cleaning of dust accumulated in the dust removal pipe by adopting compressed air for segmented blowing.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The dust accumulation prevention device of the dust removal pipe of the rotary furnace large smoke hood is arranged on both sides of the dust removal pipe, including an air main pipe, an air branch pipe, a purge pipe and a purge hole for introducing compressed air. The air main pipe is arranged parallel to the lower side of the dust removal pipe, and the air main pipe is equivalent to the compressed air main pipe. A plurality of air branches are arranged at intervals on the air main pipe, and the air branches are arranged vertically and extend upward into the dust removal pipe;

[0006] A plurality of the purge pipes are arranged at intervals on the inner bottom surface of the dust removal pipe, and the purge pipes and the air branch pipes correspond one to another in upper and lower parts. The air main pipe is connected with the purge pipe through the air branch pipe, so that compressed air can be easily introduced into the purge pipe. The end of the purge pipe is closed, and only compressed air is allowed to be ejected through the purge hole. A plurality of the purge holes arranged at intervals are provided at the bottom of the purge pipe, and the purge holes are vertically toward the bottom surface of the dust removal pipe and are at a certain interval from the bottom surface of the dust removal pipe, so as to easily blow away the accumulated dust on the bottom surface of the dust removal pipe.

[0007] Furthermore, the dust removal pipe and the air main pipe are arranged at intervals up and down, the air main pipe is arranged horizontally, the lower end of each air branch pipe is connected to the air main pipe, and the upper end passes through the dust removal pipe and then connects to the purge pipe. The air branch pipe is also provided with a solenoid valve to facilitate the control of the opening and closing of the air branch pipe.

[0008] Furthermore, the plurality of purge pipes are arranged in a straight line in the dust removal pipe to ensure standardized and neat installation, and each purge pipe includes a pipe body, a pipe joint and a pipe cap for sealing the end of the pipe body;

[0009] The purge hole is arranged at the bottom of the tube body, and a pipe clamp is provided on the tube body to be connected with the bottom surface of the dust removal tube, so as to facilitate the installation and fixation of the purge tube in the dust removal tube. One end of the tube body is threadedly connected with the pipe joint, and the tube body is connected with the air branch pipe through the pipe joint, so as to facilitate the introduction of compressed air. The other end of the tube body is threadedly connected with the pipe cap, so as to close the end of the tube body.

[0010] Furthermore, an opening and closing assembly for opening and closing the purge hole is elastically slidably connected in the purge pipe, the opening and closing assembly is controlled by compressed air, and the opening and closing assembly includes an opening and closing pipe, an opening and closing long hole, a guide rod and a compression spring.

[0011] Furthermore, the opening and closing pipe is axially slidably connected in the purge pipe, the outer diameter of the opening and closing pipe is consistent with the inner diameter of the purge pipe, one end of the opening and closing pipe is closed and the other end is open, so that the compressed air can exert force to push the opening and closing pipe to move;

[0012] The closed end of the opening and closing pipe is close to the pipe cap, and a prismatic guide rod is arranged on the closed end of the opening and closing pipe. The guide rod passes through the pipe cap, extends out of the purge pipe, and is connected to a pin shaft to prevent the opening and closing pipe from rotating. The guide rod in the purge pipe is provided with a compression spring on its outer sleeve, and both ends of the compression spring are tightly pressed against the closed end of the opening and closing pipe and the pipe cap, so as to facilitate the resetting of the opening and closing pipe.

[0013] The open end of the opening and closing pipe is close to the pipe joint, and a plurality of the opening and closing long holes are arranged at intervals on the bottom surface of the opening and closing pipe. The opening and closing long holes are long strip holes, and the opening and closing long holes correspond to the purge holes one by one. The opening and closing long holes cooperate with the purge holes to realize the opening and closing of the purge pipe.

[0014] Through the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model has a reasonable structural design. An air main pipe is arranged outside the dust removal pipe as the main pipeline of compressed air. A plurality of purge pipes arranged in a straight line are arranged inside the dust removal pipe. The purge pipes and the air main pipe are connected one by one through an air branch pipe with a solenoid valve. In this way, the length of a single purge pipe can be limited, the pressure and flow of compressed air can be guaranteed, and the dust blowing effect can be guaranteed to the maximum extent. The bottom of the purge pipe is provided with a purge hole. Compressed air is ejected at a high level through the purge hole and vertically sprayed toward the bottom surface of the dust removal pipe, so that the accumulated dust in the dust removal pipe can be blown away and taken out of the dust removal pipe with the operation of the equipment to prevent its accumulation.

[0016] In order to prevent the dust in the dust removal pipe from entering the purge pipe during normal operation of the equipment, the utility model also has an opening and closing pipe in elastic sliding connection in the purge pipe. The opening and closing pipe is in a reset state under the action of a compression spring, which means that the opening and closing long hole on the opening and closing pipe and the purge hole on the purge pipe are misaligned, which is equivalent to the purge hole, so that dust cannot enter the purge pipe. Once compressed air is introduced into the purge pipe, the compressed air pushes the opening and closing pipe to move, the compression spring is compressed, and the opening and closing long hole and the purge hole are connected accordingly, which can ensure normal purge and dust removal operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a dust accumulation prevention device for a large smoke hood dust removal pipe of a rotary furnace according to the utility model.

[0018] Figure 2 The utility model is a cross-sectional view of a purge pipe of a dust removal pipe anti-dust accumulation device of a rotary furnace large smoke hood.

[0019] Figure 3 The utility model is a schematic diagram of the installation of a purge pipe of a dust removal pipe of a rotary furnace large smoke hood.

[0020] Figure 4 The utility model is a cross-sectional view of the opening and closing components of the dust accumulation prevention device of the large smoke hood dust removal pipe of the rotary furnace.

[0021] The numbers in the attached drawings are: 1 dust removal pipe, 2 air main pipe, 3 air branch pipe, 4 purge pipe, 41 pipe body, 42 pipe joint, 43 pipe cap, 5 purge hole, 6 solenoid valve, 71 opening and closing pipe, 72 opening and closing long hole, 73 guide rod, 74 compression spring, 8 pin shaft, 9 pipe clamp. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0023] like Figure 1~Figure 4 As shown, the dust accumulation prevention device for the dust removal pipe of the rotary furnace large smoke hood is arranged on both sides of the dust removal pipe 1, including an air main pipe 2 for introducing compressed air, an air branch pipe 3, a purge pipe 4 and a purge hole 5.

[0024] An air main pipe 2 is arranged parallel to the lower outer side of the dust removal pipe 1, that is, the dust removal pipe 1 and the air main pipe 2 are arranged at intervals. Here, the cross section of the dust removal pipe 1 is rectangular, and the air main pipe 2 is arranged horizontally. A plurality of air branch pipes 3 are arranged at intervals on the air main pipe 2. The air branch pipes 3 are arranged vertically and extend upward into the dust removal pipe 1, so that compressed air can be passed into the dust removal pipe 1. Figure 1 shown.

[0025] In order to use compressed air to blow away the dust accumulated in the dust removal pipe 1, a plurality of purge pipes 4 are arranged at intervals on the inner bottom surface of the dust removal pipe 1. The plurality of purge pipes 4 are arranged in a straight line in the dust removal pipe 1, and the purge pipes 4 correspond to the air branch pipes 3 one by one. The purge pipes 4 are divided into a plurality for installation based on the compressed air pressure and flow rate. Here, the length of each purge pipe 4 does not exceed 6 meters, which can maximize the soot blowing effect and save the number of pipelines.

[0026] To facilitate the installation of the purge pipe 4 in the dust removal pipe 1, each purge pipe 4 includes a pipe body 41, a pipe joint 42 and a pipe cap 43 for sealing the end of the pipe body 41. Figure 2 A pipe clamp 9 is provided on the pipe body 41 to connect and fix with the bottom surface of the dust removal pipe 1 , so as to realize the installation and fixation of the purge pipe 4 in the dust removal pipe 1 .

[0027] The air main pipe 2 is connected to the purge pipe 4 through the air branch pipe 3, that is, the lower end of each air branch pipe 3 is connected to the air main pipe 2, and the upper end passes through the dust removal pipe 1 and then connects to the purge pipe 4, so that compressed air can be supplied to the purge pipe 4. Specifically, one end of the pipe body 41 is threadedly connected to the pipe joint 42, and the pipe body 41 is connected to the air branch pipe 3 through the pipe joint 42. The pipe joint 42 adopts a right-angle joint. The air branch pipe 3 is also provided with a solenoid valve 6 to control the opening and closing of the air branch pipe 3.

[0028] A plurality of purge holes 5 are arranged at intervals at the bottom of the purge pipe 4, that is, the purge holes 5 are arranged at the bottom of the pipe body 41, the diameter of the purge holes 5 is 5mm, and the distance between two adjacent purge holes 5 can be 150mm. The purge holes 5 are perpendicular to the bottom surface of the dust removal pipe 1 and are at a certain distance from the bottom surface of the dust removal pipe 1. The compressed air ejected can form a wind column, which is perpendicular to the bottom surface of the dust removal pipe 1 and evenly diffuses to the surroundings. Figure 3 As shown, the arrow in the figure points to the gas outlet direction of the purge hole 5.

[0029] In order to realize the compressed air flowing out of the purge hole 5, the end of the purge tube 4 needs to be closed, so that the compressed air in the purge tube 4 can only be ejected through the purge hole 5. Specifically, the other end of the tube body 41 is threadedly connected to the pipe cap 43, and the pipe cap 43 can close one end of the purge tube 4.

[0030] The principle of the utility model is: when it is necessary to clean the dust accumulated in the dust removal pipe 1, the solenoid valve 6 is controlled to operate so as to open the air branch pipe 3, and then the compressed air is evenly introduced into each purge pipe 4, and is ejected vertically downward at high speed through the purge hole 5. Compressed air of a certain pressure is sprayed to the bottom surface of the dust removal pipe 1, thereby blowing away the accumulated dust, making it convenient to effectively take away the blown dust when the equipment is running again. The entire purge process can achieve rapid cleaning of deposited dust, and has the advantages of high purge efficiency, balanced purge pressure, and good dust removal effect.

[0031] In order to optimize the product structure and prevent dust from entering the purge pipe 4 through the purge hole 5, an opening and closing component for opening and closing the purge hole 5 is elastically slidably connected in the purge pipe 4. When the equipment is operating normally and the dust removal pipe 1 does not need to be purged, the opening and closing component can be used to block the purge hole 5 to prevent dust from entering.

[0032] The opening and closing assembly includes an opening and closing tube 71, an opening and closing slot 72, a guide rod 73 and a compression spring 74. Figure 4 As shown. An opening and closing pipe 71 is axially slidably connected in the purge pipe 4. The outer diameter of the opening and closing pipe 71 is consistent with the inner diameter of the purge pipe 4. One end of the opening and closing pipe 71 is closed and the other end is open. The closed end of the opening and closing pipe 71 is close to the pipe cap 43, and the open end of the opening and closing pipe 71 is close to the pipe joint 42. A plurality of opening and closing long holes 72 are arranged at intervals on the bottom surface of the opening and closing pipe 71. The opening and closing long holes 72 are long holes. The opening and closing long holes 72 correspond to the purge holes 5 one by one. The opening and closing long holes 72 cooperate with the purge holes 5 to realize the opening and closing of the purge pipe 4.

[0033] In order to guide the sliding of the opening and closing pipe 71, a prismatic guide rod 73 is provided on the closed end of the opening and closing pipe 71. The guide rod 73 passes through the pipe cap 43, extends out of the purge pipe 4, and is connected to the pin 8. The purpose of using the prismatic guide rod 73 is to prevent the opening and closing pipe 71 from rotating in the circumferential direction and ensure that the opening and closing pipe 71 can only move axially. The pin 8 plays a limiting role to ensure the moving distance of the opening and closing pipe 71.

[0034] A compression spring 74 is provided on the outer sleeve of the guide rod 73 in the purge pipe 4, and the two ends of the compression spring 74 are tightly pressed against the closed end of the opening and closing pipe 71 and the pipe cap 43. In the initial state, the compression spring 74 tends to stretch, and then the closed end of the opening and closing pipe 71 will be relatively far away from the pipe cap 43. At this time, the opening and closing long hole 72 and the purge hole 5 are misaligned, so that the purge hole 5 is closed, and dust will not enter the purge pipe 4.

[0035] Once compressed air is introduced into the purge pipe 4, the compressed air pushes the closed end of the opening and closing pipe 71 close to the pipe cap 43, and the compression spring 74 is compressed. As the opening and closing pipe 71 moves, the opening and closing long hole 72 and the purge hole 5 correspond to each other, and then the compressed air is sprayed out after passing through the opening and closing long hole 72 and the purge hole 5. If the force of the compressed air disappears, the compression spring 74 will push the opening and closing pipe 71 to reset, and then the opening and closing long hole 72 and the purge hole 5 will be misaligned again, and the purge hole 5 can be blocked.

[0036] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A dust accumulation prevention device for the dust removal pipe of the rotary furnace hood, arranged on both sides of the dust removal pipe (1), characterized in that: It comprises an air main pipe (2) for passing compressed air, an air branch pipe (3), a purge pipe (4) and a purge hole (5), the air main pipe (2) being arranged parallel to the lower outer side of the dust removal pipe (1), a plurality of air branch pipes (3) being arranged at intervals on the air main pipe (2), and the air branch pipes (3) being arranged vertically and extending upward into the dust removal pipe (1); A plurality of purge pipes (4) are arranged at intervals on the inner bottom surface of the dust removal pipe (1); the purge pipes (4) and the air branch pipes (3) correspond to each other in the upper and lower parts; the air main pipe (2) is connected to the purge pipe (4) through the air branch pipe (3); the end of the purge pipe (4) is closed; a plurality of purge holes (5) arranged at intervals are opened at the bottom of the purge pipe (4); the purge holes (5) are perpendicular to the bottom surface of the dust removal pipe (1) and are spaced a certain distance from the bottom surface of the dust removal pipe (1).

2. The dust accumulation prevention device for the large smoke hood of a rotary furnace according to claim 1 is characterized in that: The dust removal pipe (1) and the main air pipe (2) are arranged vertically and spaced apart, the main air pipe (2) is arranged horizontally, the lower end of each of the air branch pipes (3) is connected to the main air pipe (2), and the upper end passes through the dust removal pipe (1) and then connects to the purge pipe (4), and a solenoid valve (6) is also provided on the air branch pipe (3).

3. The dust accumulation prevention device for the dust removal pipe of the rotary furnace large smoke hood according to claim 1 is characterized in that: A plurality of the purge pipes (4) are arranged in a straight line in the dust removal pipe (1), and each purge pipe (4) comprises a pipe body (41), a pipe joint (42), and a pipe cap (43) for sealing an end of the pipe body (41); The purge hole (5) is arranged at the bottom of the tube body (41); a tube clamp (9) is arranged on the tube body (41) to be connected to the bottom surface of the dust removal tube (1); one end of the tube body (41) is threadedly connected to the tube joint (42); the tube body (41) is connected to the air branch pipe (3) via the tube joint (42); and the other end of the tube body (41) is threadedly connected to the tube cap (43).

4. The dust accumulation prevention device for the large smoke hood of a rotary furnace according to claim 3 is characterized in that: An opening and closing assembly for opening and closing the purge hole (5) is elastically slidably connected in the purge pipe (4), and the opening and closing assembly comprises an opening and closing pipe (71), an opening and closing long hole (72), a guide rod (73), and a compression spring (74).

5. The dust accumulation prevention device for the dust removal pipe of the rotary furnace large smoke hood according to claim 4 is characterized in that: The opening and closing pipe (71) is axially slidably connected inside the purge pipe (4); the outer diameter of the opening and closing pipe (71) is consistent with the inner diameter of the purge pipe (4); one end of the opening and closing pipe (71) is closed and the other end is open; The closed end of the opening and closing tube (71) is close to the pipe cap (43), and a prismatic guide rod (73) is provided on the closed end of the opening and closing tube (71). The guide rod (73) passes through the pipe cap (43), extends out of the purge tube (4), and is connected to a pin shaft (8). The guide rod (73) in the purge tube (4) is provided with a compression spring (74) on its outer sleeve, and both ends of the compression spring (74) are tightly pressed against the closed end of the opening and closing tube (71) and the pipe cap (43). The open end of the opening and closing pipe (71) is close to the pipe joint (42), and a plurality of opening and closing long holes (72) are arranged at intervals on the bottom surface of the opening and closing pipe (71). The opening and closing long holes (72) are long holes, and the opening and closing long holes (72) and the purge holes (5) correspond one to one. The opening and closing long holes (72) cooperate with the purge holes (5) to realize the opening and closing of the purge pipe (4).

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