Discharging device for scattering box

Abstract

The utility model relates to the technical field of preheating links in cement production, in particular to a blanking device for a scattering box. Comprising a three-stage blanking pipe, a scattering box, a five-stage cyclone cylinder and a five-stage outlet ascending pipeline, the fifth-stage cyclone cylinder is positioned at the bottom of the fifth-stage outlet ascending pipeline; the third-stage discharging pipe is obliquely arranged, the bottom of the third-stage discharging pipe is connected with the material scattering box, and the material scattering box is located on one side of the fifth-stage outlet ascending pipeline and communicated with the fifth-stage outlet ascending pipeline. An ash removal hole is formed in the material scattering box; the pipe further comprises a hard pipe body. A plurality of concave steps are sequentially formed in the side wall of the pipe body in the axis direction of the pipe body; a handle is arranged at the top of the tube body; the bottom of the pipe body is inserted into the scattering box from the ash removal hole of the scattering box, and the handle is located outside the scattering box and fixed to the scattering box; according to the utility model, the problem that the materials directly enter the kiln due to short-circuit collapse of the materials after the hanging piece is broken is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cement production preheating link technical field, specifically for a kind of discharging device for material spreading box. BACKGROUND

[0002] Cement plant preheater plays an important role in the process of cement production, its main components include cyclone, downpipe, flap valve, inner cylinder, upcast flue (heat exchange pipeline, decomposition furnace), smoke chamber, expansion joint, etc., its key role is to make full use of the exhaust gas discharged by rotary kiln and decomposition furnace to heat raw material, thereby preheating raw material, and decomposing part of carbonate. In order to maximize the gas-solid heat exchange efficiency, realize the high quality, high yield, low consumption of entire calcination system, it must have three functions of uniform dispersion of gas-solid, rapid heat exchange and high efficiency separation. The inner cylinder is a key component, which has great influence on energy consumption and yield of the entire preheater system. The current inner cylinder configuration of preheater: the first stage is integral steel structure, and the other four stages are split ceramic hanging pieces. The most prominent disadvantage of ceramic hanging piece is that it is not resistant to impact of super-long size, and is prone to brittle fracture. If one piece of hanging piece breaks off, it will form air leakage, the cyclone loses centrifugal force, and the entire inner cylinder shakes during use, or is not reasonably installed, which easily causes the fracture of the connection between hanging piece and flange hanging seat, resulting in the collapse of the entire inner cylinder, or the blockage of cyclone or the disorder of preheater working condition.

[0003] The serious collapse of three-stage hanging piece causes the blockage of cyclone, and during the process of clearing the blockage, C3 hanging piece falls into five-stage and damages C5 hanging piece, which causes the disorder of preheater working condition, the disorder of material flow direction, and the short circuit of a large part of material directly into the kiln. Since the decomposition rate of material into the kiln is reduced, the heat load of kiln is increased, and the kiln is forced to run at low yield. Since the three-stage and five-stage inner cylinder hanging pieces are damaged, the distance between the updraft gas at the outlet of cyclone and the material spreading box is shortened, and the upward capacity is weakened. When the material in the downpipe cannot be completely lifted due to the rapid downward movement of the material, material short circuit and material collapse occur, which causes a large amount of material that has not completed the decomposition task to directly enter the kiln, and causes the easy burning of material, the reduction of yield, or the reduction of kiln speed operation. Even so, the quality of out-of-kiln clinker cannot be stabilized, and the possibility of raw material surge exists at any time. CONTENT OF THE UTILITY MODEL

[0004] The utility model overcomes the defects of the prior art, and provides a discharging auxiliary device for material spreading box, which solves the problem of material short circuit and material collapse after the fracture of hanging piece, and further causes the direct entry of material into the kiln.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme:

[0006] A kind of for the material spreading box, including three-stage downpipe, material spreading box, five-stage cyclone and five-stage outlet riser pipe;The five-stage cyclone is located at the bottom of five-stage outlet riser pipe;Three-stage downpipe is inclinedly arranged, and the bottom of three-stage downpipe is connected with the material spreading box, and the material spreading box is located at one side of five-stage outlet riser pipe and is communicated with five-stage outlet riser pipe;The material spreading box is provided with ash removal hole;Further comprising rigid pipe body;A plurality of recessed steps are sequentially formed on the sidewall of the pipe body along the axis direction of the pipe body;The top of the pipe body is provided with handle;The diameter of the pipe body is less than the diameter of ash removal hole, and the bottom of the pipe body is inserted into the inside of the material spreading box from the ash removal hole of the material spreading box, and the handle is located outside the material spreading box and is fixed with the material spreading box.

[0007] Further, the pipe body is a steel pipe with both ends open.

[0008] Further, the handle is penetrated in the top of the pipe body and is welded with the pipe body.

[0009] Further, one side of the recessed step is connected with the sidewall of the pipe body, and the other three sides of the recessed step are in suspended state.

[0010] Further, the length of the pipe body is 1.5-2m.

[0011] Further, the diameter of the pipe body is 15-18cm.

[0012] The beneficial effects generated by the utility model relative to the prior art are:

[0013] 1, with the help of ash removal hole, artificial intervention material trend, so that the material of the downpipe fast sliding contacts the auxiliary device for discharging after using the inner step structure on it to slow down the material, so as to achieve the effect of scattering material and slowing down the material speed, reduce the five-stage rising air pressure, reduce the three-stage material short circuit directly into the five-stage cyclone, so as to directly into the kiln, make the material enter the four-stage cyclone smoothly, so as to enter the decomposition furnace to complete the decomposition task, reverse the preheater working condition, reduce the kiln heat load.

[0014] 2, the auxiliary device for discharging of the utility model can indirectly reduce the decomposition furnace temperature, especially the decomposition furnace cone temperature;From above 1000 DEG C to about 840 DEG C, to a certain extent, reduce the system skinning, reduce the working intensity of on-site post personnel. Stable kiln current, stable clinker quality, improve kiln output;Decomposition furnace temperature control returns to normal, reduces the risk of system sintering blockage caused by high temperature.

[0015] 3, the utility model is simple in manufacture, convenient to use, and strong operability. When the hanging piece breaks, the auxiliary device for discharging of the utility model can be quickly made to assist in discharging. DRAWINGS

[0016] Figure 1 is the structure schematic view of the auxiliary device for the material scattering box of the utility model;

[0017] Figure 2 is the upper area schematic view of five-stage cyclone of the preheater system, wherein the yellow area is the inner cylinder hanging piece, the blue area is the material scattering box, the black area is the inner cylinder damage, and the black dotted line is the simulation material trend change;

[0018] Figure 3 is the comparison chart of raw material feeding amount, wherein the A line represents the feeding amount after using the auxiliary device for material scattering; and the B line represents the feeding amount without using the auxiliary device for material scattering;

[0019] Figure 4 is the negative pressure trend chart of five-stage feeding pipe without using the auxiliary device for material scattering;

[0020] Figure 5 is the negative pressure trend chart of five-stage feeding pipe with using the auxiliary device for material scattering.

[0021] Reference signs:

[0022] 1, three-stage feeding pipe; 2, material scattering box; 3, five-stage cyclone; 4, five-stage outlet rising pipe; 5, handle; 6, pipe body; 7, inner recessed step. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects of the utility model to be solved more clear and obvious, the utility model is further described in detail in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. The technical solutions of the utility model are described in detail below in combination with embodiments and drawings, but the protection scope is not limited by this.

[0024] Referring to Figure 1 and Figure 2 , the embodiment provides an auxiliary device for the material scattering box, which comprises three-stage feeding pipe 1, material scattering box 2, five-stage cyclone 3 and five-stage outlet rising pipe 4; the five-stage cyclone 3 is located at the bottom of the five-stage outlet rising pipe 4; the three-stage feeding pipe 1 is inclinedly arranged, the bottom of the three-stage feeding pipe 1 is connected with the material scattering box 2, the material scattering box 2 is located on one side of the five-stage outlet rising pipe 4 and communicates with the five-stage outlet rising pipe 4; the material scattering box 2 is provided with a dust removal hole. The diameter of the dust removal hole is 20 cm.

[0025] Also include hard tube body 6; the tube body 6 is a steel pipe with both ends open. The length of the tube body 6 is 1.5m, the diameter of the tube body 6 is 15cm, the diameter of the tube body 6 is smaller than the diameter of the ash hole. The side wall of the tube body 6 is sequentially provided with five concave steps 7 along the axis direction of the tube body 6; one side of the concave step 7 is connected with the side wall of the tube body 6, and the other three sides of the concave step 7 are in a suspended state; the manufacturing process of the concave step 7 is simple, which is to open a plurality of holes on one side of the tube body 6, and only three edges of each hole are opened and knocked into the tube body 6 to form the concave step 7.

[0026] In order to prevent the tube body 6 from falling into the preheater and to facilitate the fixation of the tube body 6, a handle 5 is provided at one end of the top of the tube body 6, and the handle 5 penetrates the top of the tube body 6 and is welded with the tube body 6. The bottom of the tube body 6 is inserted into the inside of the material distribution box 2 from the ash hole of the material distribution box 2, and the handle 5 is located outside the material distribution box 2 and is fixed with the material distribution box 2 by using iron wire or the like.

[0027] The working principle of the device is:

[0028] When the five-stage inner cylinder hanging piece appears damage problem, the bottom of the tube body 6 is inserted into the inside of the material distribution box 2 from the ash hole of the material distribution box 2, and the handle 5 is fixed with the material distribution box 2 by using iron wire or the like; one side of the concave step 7 is upward, the material entering the material distribution box 2 through the three-stage downpipe 1 falls on the concave step 7, changes the direction, and the material originally directly contacting the five-stage scraping piece is bounced upward, so that the material avoids the damaged place of the hanging piece inside the five-stage outlet rising pipe 4, and avoids the short circuit caused by the material directly falling into the five-stage cyclone 3; the material and the wind blown out of the five-stage cyclone 3 blow into the five-stage outlet rising pipe 4, and are sent into the four-stage pipe through the five-stage outlet rising pipe 4; the four-stage pipe is connected with the decomposition furnace, and the material is sent into the decomposition furnace.

[0029] After using the device, when the five-stage inner cylinder hanging piece appears damage problem, the decomposition furnace temperature decreases, especially the temperature of the cone part, which decreases from above 1000℃ to about 840℃, which to some extent reduces the system skinning and reduces the working intensity of the site post personnel; the decomposition furnace temperature control returns to normal, and the risk of system sintering blockage caused by high temperature is reduced;

[0030] Direct economic benefit: 30 tons of production increase per hour, stop kiln on July 21, total use of 5 days, production increase of about 3600 tons of feed, material consumption of 1.58, equivalent to about 2300 tons of clinker, net profit per ton of clinker of 150 yuan, benefit: 30*24*5 / 1.58*150=341772 yuan.

[0031] The above is further detailed description of the utility model made in combination with specific preferred embodiments, and cannot be deemed that the specific embodiments of the utility model are limited to this. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the utility model, a number of simple deductions or substitutions can also be made, and all should be deemed to belong to the utility model, and the patent protection scope is determined by the submitted claims.

Claims

1. A kind of for material spreading box's discharging device, including three-stage discharging pipe (1), material spreading box (2), five-stage cyclone (3) and five-stage outlet riser pipe (4);The five-stage cyclone (3) is located in the bottom of five-stage outlet riser pipe (4);Three-stage discharging pipe (1) is obliquely arranged, three-stage discharging pipe (1) bottom is connected with the described material spreading box (2), and the material spreading box (2) is located in five-stage outlet riser pipe (4) one side and is communicated with five-stage outlet riser pipe (4);The material spreading box (2) is provided with dust hole;Its characterized in that, It also comprises a hard tube body (6); a plurality of concave steps (7) are sequentially arranged on the side wall of the tube body (6) along the axial direction of the tube body (6); a handle (5) is arranged on the top of the tube body (6); the diameter of the tube body (6) is smaller than that of the ash hole; the bottom of the tube body (6) is inserted into the inside of the distribution box (2) from the ash hole of the distribution box (2), and the handle (5) is located outside the distribution box (2) and fixed with the distribution box (2).

2. The material discharging device for a spreading box according to claim 1, wherein The tube body (6) is a steel pipe with both ends open.

3. The material dispensing device of claim 1, wherein, The handle (5) penetrates through the top of the tube body (6) and is welded with the tube body (6).

4. The material dispensing apparatus of claim 1, wherein, One side of the concave step (7) is connected with the side wall of the tube body (6), and the other three sides of the concave step (7) are in a suspended state.

5. The material dispensing apparatus of claim 1, wherein, The length of the tube body (6) is 1.5-2m.

6. A material dispensing device for a spreader box according to claim 5, wherein, The diameter of the tube body (6) is 15-18cm.

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