Recycling device for fly ash of coking plant

Abstract

The utility model discloses a coking plant fly ash recycling device, which relates to the field of coal coke chemical industry, and comprises a support base, the top of the support base is provided with a first screw conveyer, the first screw conveyer comprises a first variable frequency motor, and the right side of the first variable frequency motor is fixedly connected with the first screw conveyer. Materials are fed from a stock bin on the top of the second spiral conveyor, conveyed to an inner cavity of the first spiral conveyor through the second spiral conveyor and discharged through a discharging pipe, and in order to achieve quantitative feeding of a discharging port, a weighing sensor is arranged on the first spiral conveyor and can detect the weight of the conveyed materials and send out a signal in real time. The frequency converter dynamically adjusts the rotating speed of the feeding screw in the conveyor according to a material signal sent by the sensor, so that quantitative feeding is achieved, the quantitative feeding precision can reach 0.2%, the feeding capacity is about 0.1-100 t / h, and therefore the problems in the background technology are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coal coking industry, concretely is a kind of back matching device for dust of coking plant. BACKGROUND

[0002] Coal coking industry plays a vital role in the rapid economic development of our country, industrial and agricultural and residential life and coke and its downstream products are closely related. At the same time, coking industry is also a major pollution source, especially dust pollution, and the coal preparation section is the most serious place of dust generation in the coking plant. Before entering the coking furnace, the coal needs to go through the following processes: unloading by car or train, belt conveying, coal blending, impurity removal, screening, crushing, humidification, etc. to meet the requirements of coking, and then transported to the coke tower by belt conveyor for use in the coking operation area. The coke produced by the coke oven needs to go through the following processes: coke pushing, coke discharging, belt conveying, coke cutting machine, screening and loading for blast furnace use.

[0003] The utility model provides a kind of back matching device for dust of coking plant, in coking production, a large amount of coking dust will be generated, toxic and harmful substances contained in these dusts can cause environmental pollution, and also harm to human body, dust also has other characteristics, such as flammability, explosiveness, etc. However, the usual dust removal method is usually to replace lean coal with dust removal ash and then back matching into raw coal. Generally, the collected dust is transported to the coal yard for separate storage, then mixed with raw coal for coal blending, and the blended coal is transported to the coal tower by belt conveyor. However, this process produces secondary dusting, and the transportation and storage require higher cost. Therefore, a new dust removal ash back matching process is proposed to be more environmentally friendly and economical. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of back matching device for dust of coking plant, by the cooperation of first screw conveyor, second screw conveyor, first variable frequency motor, second variable frequency motor and speed sensor and weighing sensor, the effect of preventing secondary dusting is achieved, and the dust can be back matched to improve the environmental protection effect, thereby solving the problems in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a coking plant dedusting ash's back -mixing device, including support base, the top of support base is provided with first screw conveyor, first screw conveyor includes first variable frequency motor, the right side of first variable frequency motor is fixedly connected with first screw conveyor, the top of first variable frequency motor is fixedly connected with speed sensor, the right side of first screw conveyor bottom is connected with the pipe of discharging, the bottom of pipe of discharging penetrates support base and is connected with first soft connection, the bottom of first screw conveyor is fixedly connected with weighing sensor, the top of first screw conveyor is provided with second screw conveyor, second screw conveyor includes second variable frequency motor, the right side of second variable frequency motor is fixedly connected with second screw conveyor, the left side of second screw conveyor bottom is connected with second soft connection, the bottom of second soft connection is connected with first screw conveyor, the right side of second screw conveyor top is connected with the pipe of feeding, the top of pipe of feeding is fixedly connected with third soft connection, the surface of third soft connection is fixedly connected with gate body, the top of third soft connection is fixedly connected with bin.

[0006] Further, the two sides of the surface of the second screw conveyor are sleeved with first fixed rings, the front side and the rear side of the two first fixed rings are fixedly connected with limiting plates, the bottom of the two limiting plates is fixedly connected with second fixed rings, the inner cavity of the second fixed ring is movably connected with the first screw conveyor, and the bottom of the two second fixed rings is fixedly connected with the support base.

[0007] Further, the front side and the rear side of the two second fixed rings are fixedly connected with reinforcing blocks, and the bottom of the two reinforcing blocks is fixedly connected with the support base.

[0008] Further, the right side of the surface of the second screw conveyor is fixedly connected with connecting rings, the number of the connecting rings is two, the opposite side of the two connecting rings is fixedly connected with support plates, the top between the opposite side of the two support plates is fixedly connected with a limiting ring, and the inner cavity of the limiting ring is fixedly connected with the bin.

[0009] Further, the material of the first soft connection is canvas, the material of the second soft connection is plastic, and the material of the third soft connection is rubber.

[0010] Further, the two sides of the bottom of the support base are fixedly connected with support legs, and the two sides of the top of the two support legs are provided with positioning holes.

[0011] Further, the material of the bin is a steel structure, and the main materials of the first screw conveyor and the second screw conveyor are carbon steel Q235-B and cast iron.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] The utility model provides a kind of coking plant dust removal ash's back configuration device, material is fed by the top bin of second screw conveyor, material is conveyed to the inner cavity of first screw conveyor by second screw conveyor, is discharged by discharge pipe, for realizing the quantitative feeding of discharge port, weighing sensor is equipped on first screw conveyor, the sensor can detect the weight of transport material and real-time signal is sent, frequency converter is according to the material signal sent by sensor, the rotational speed of feeding screw in conveyor is dynamically adjusted, to realize quantitative feeding, and the quantitative feeding precision can reach 0.2%, and the feeding capacity is about 0.1~100t / h. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model;

[0015] Figure 2 It is the overhead structure schematic diagram of the utility model;

[0016] Figure 3 It is the second screw conveyor sectional structure schematic diagram of the utility model;

[0017] Figure 4 It is the first screw conveyor sectional structure schematic diagram of the utility model.

[0018] In the drawing: 1, support base;2, first screw conveyor;3, first variable frequency motor;4, speed sensor;5, discharge pipe;6, first soft connection;7, weighing sensor;8, second screw conveyor;9, second variable frequency motor;10, second soft connection;11, feed pipe;12, third soft connection;13, gate body;14, bin;15, first fixed ring;16, limit plate;17, second fixed ring;18, reinforcing block;19, connecting ring;20, support plate;21, limit ring;22, support leg;23, positioning hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] To solve the technical problems that the existing dust removal ash can produce secondary dust raising, and transportation and storage all need to consume higher cost, as shown in Figures 1-4 The following preferred technical solutions are provided:

[0021] The utility model provides a kind of coking plant dust ash's back matching device, including support base 1, the top of support base 1 is provided with first screw conveyor 2, first screw conveyor 2 includes first variable frequency motor 3, the right side of first variable frequency motor 3 is fixedly connected with first screw conveyor 2, the top of first variable frequency motor 3 is fixedly connected with speed sensor 4, the right side of the bottom of first screw conveyor 2 is communicated with discharge pipe 5, the bottom of discharge pipe 5 penetrates support base 1 and is communicated with first soft connection 6, the bottom of first screw conveyor 2 is fixedly connected with weighing sensor 7, the top of first screw conveyor 2 is provided with second screw conveyor 8, second screw conveyor 8 includes second variable frequency motor 9, the right side of second variable frequency motor 9 is fixedly connected with second screw conveyor 8, the left side of the bottom of second screw conveyor 8 is communicated with second soft connection 10, the bottom of second soft connection 10 is communicated with first screw conveyor 2, the right side of the top of second screw conveyor 8 is communicated with feeding pipe 11, the top of feeding pipe 11 is fixedly connected with third soft connection 12, the surface of third soft connection 12 is fixedly connected with gate body 13, the top of third soft connection 12 is fixedly connected with stock bin 14.

[0022] The surface of second screw conveyor 8 is provided with first fixed ring 15, the front side and the back side of two first fixed rings 15 are fixedly connected with limiting plate 16, the bottom of two limiting plates 16 is fixedly connected with second fixed ring 17, the inner chamber of second fixed ring 17 is movably connected with first screw conveyor 2, the bottom of two second fixed rings 17 is fixedly connected with support base 1.

[0023] The front side and the back side of two second fixed rings 17 are fixedly connected with reinforcing block 18, the bottom of two reinforcing blocks 18 is fixedly connected with support base 1.

[0024] The material of first soft connection 6 is canvas, the material of second soft connection 10 is plastic, the material of third soft connection 12 is rubber.

[0025] The material of stock bin 14 is steel structure, the main material of first screw conveyor 2 and second screw conveyor 8 is carbon steel Q235-B and cast iron.

[0026] Specifically, in use, the material is fed from the bin 14 at the top of the second screw conveyor 8, the feeding amount is controlled by the opening angle of the gate, the first flexible connection 6, the second flexible connection 10 and the third flexible connection 12 are connected to each other while avoiding the transmission of external forces such as bin pressure and equipment stress between devices, which may cause inaccurate weighing, then the material in the bin 14 is sent to the inner cavity of the first screw conveyor 2 at a certain speed by the second screw conveyor 8, the material is conveyed through the second flexible connection 10 by the first screw conveyor 2, the speed of the motor can be adjusted by the setting of the frequency conversion motor, the rotation speed of the screw inside the screw conveyor is adjusted, so that the conveying capacity of the screw conveyor is adjusted, then the material conveyed by the second screw conveyor 8 is sent to the discharge pipe 5 by the first screw conveyor 2, in order to realize the quantitative feeding of the discharge port, the weighing sensor 7 is arranged on the first screw conveyor 2, the sensor can detect the weight of the transported material and send signals in real time, the frequency converter adjusts the rotation speed of the feeding screw in the conveyor according to the material signal sent by the sensor, so as to realize the quantitative feeding, the quantitative feeding accuracy can reach 0.2%, and the feeding capacity is about 0.1-100t / h.

[0027] In order to solve the technical problem that the bin 14 is not stable, as shown in Figure 3 The following preferred technical solutions are provided:

[0028] The connecting ring 19 is fixedly connected to the right side of the surface of the second screw conveyor 8, the number of the connecting ring 19 is two, the opposite side of the two connecting rings 19 is fixedly connected with the supporting plate 20, the top between the opposite sides of the two supporting plates 20 is fixedly connected with the limiting ring 21, and the inner cavity of the limiting ring 21 is fixedly connected with the bin 14.

[0029] Specifically, the bin 14 and the second screw conveyor 8 are reinforced by the fixing of the supporting plate 20 and the limiting ring 21.

[0030] In order to solve the technical problem that the supporting base 1 is not convenient to position, as shown in Figure 3 and Figure 4 The following preferred technical solutions are provided:

[0031] The supporting legs 22 are fixedly connected to the two sides of the bottom of the supporting base 1, and the positioning holes 23 are formed in the two sides of the top of the two supporting legs 22.

[0032] Specifically, the positioning holes 23 are formed in the top of the supporting legs 22, which facilitates the positioning of the supporting base 1.

[0033] Working principle: in use, the material is fed from the bin 14 at the top of the second screw conveyor 8, the feeding amount is controlled by the opening angle of the gate, the first soft connection 6, the second soft connection 10 and the third soft connection 12 are connected with each other while avoiding the transmission of external forces such as bin pressure and equipment stress between the devices, so as to cause inaccurate weighing, then the material in the bin 14 is sent to the inner cavity of the first screw conveyor 2 at a certain speed by the second screw conveyor 8, the material is conveyed through the second soft connection 10 by the first screw conveyor 2, the speed of the motor can be adjusted by the setting of the frequency conversion motor, the rotating speed of the screw inside the screw conveyor is adjusted, so that the conveying capacity of the screw conveyor is adjusted, then the material conveyed by the second screw conveyor 8 is sent to the discharge pipe 5 by the first screw conveyor 2, in order to realize the quantitative feeding of the discharge port, the weighing sensor 7 is arranged on the first screw conveyor 2, the sensor can detect the weight of the transported material and send signals in real time, the frequency converter adjusts the rotating speed of the feeding screw in the conveyor according to the material signal sent by the sensor, so as to realize the quantitative feeding, the quantitative feeding accuracy can reach 0.2%, and the feeding capacity is about 0.1-100t / h.

[0034] In summary: the coking plant dedusting ash back blending device solves the problems that the existing dust removal device is easy to produce secondary dust raising and the transportation and storage need to consume higher cost by the cooperation of the supporting base 1, the first screw conveyor 2, the first frequency conversion motor 3, the speed sensor 4, the discharge pipe 5, the first soft connection 6, the weighing sensor 7, the second screw conveyor 8, the second frequency conversion motor 9, the second soft connection 10, the feeding pipe 11, the third soft connection 12, the gate body 13 and the bin 14.

[0035] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0036] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for back blending of coking plant dedusting ash, comprising a supporting base (1), characterized in that: The top of the support base (1) is provided with a first screw conveyor (2), the first screw conveyor (2) comprises a first variable frequency motor (3), the right side of the first variable frequency motor (3) is fixedly connected with the first screw conveyor (2), the top of the first variable frequency motor (3) is fixedly connected with a speed sensor (4), the right side of the bottom of the first screw conveyor (2) is communicated with a discharge pipe (5), the bottom of the discharge pipe (5) penetrates through the support base (1) and is communicated with a first flexible connection (6), the bottom of the first screw conveyor (2) is fixedly connected with a weighing sensor (7), the top of the first screw conveyor (2) is provided with a second screw conveyor (8), the second screw conveyor (8) comprises a second variable frequency motor (9), the right side of the second variable frequency motor (9) is fixedly connected with the second screw conveyor (8), the left side of the bottom of the second screw conveyor (8) is communicated with a second flexible connection (10), the bottom of the second flexible connection (10) is communicated with the first screw conveyor (2), the right side of the top of the second screw conveyor (8) is communicated with a feeding pipe (11), the top of the feeding pipe (11) is fixedly connected with a third flexible connection (12), the surface of the third flexible connection (12) is fixedly connected with a gate body (13), the top of the third flexible connection (12) is fixedly connected with a bin (14).

2. A device for blending of coking plant dedusting ash according to claim 1, characterized in that: The surfaces of the second screw conveyors (8) are sleeved with first fixed rings (15) on both sides, the front sides and the back sides of the two first fixed rings (15) are fixedly connected with limiting plates (16), the bottoms of the two limiting plates (16) are fixedly connected with second fixed rings (17), the inner cavities of the second fixed rings (17) are movably connected with the first screw conveyors (2), and the bottoms of the two second fixed rings (17) are fixedly connected with the support base (1).

3. A device for blending of coking plant dedusting ash according to claim 1, characterized in that: The front sides and the back sides of the two second fixed rings (17) are fixedly connected with reinforcing blocks (18), and the bottoms of the two reinforcing blocks (18) are fixedly connected with the support base (1).

4. A device for blending of coking plant dedusting ash according to claim 1, characterized in that: The right side of the surface of the second screw conveyor (8) is fixedly connected with connecting rings (19), the number of the connecting rings (19) is two, the opposite sides of the two connecting rings (19) are fixedly connected with support plates (20), the top between the opposite sides of the two support plates (20) is fixedly connected with a limiting ring (21), and the inner cavity of the limiting ring (21) is fixedly connected with the bin (14).

5. A device for blending of coking plant dedusting ash according to claim 1, characterized in that: The material of the first flexible connection (6) is canvas, the material of the second flexible connection (10) is plastic, and the material of the third flexible connection (12) is rubber.

6. A device for blending of coking plant dedusting ash according to claim 1, characterized in that: The bottoms of the support base (1) are fixedly connected with support legs (22) on both sides, and the tops of the two support legs (22) are provided with positioning holes (23) on both sides.

7. A device for blending of coking plant dedusting ash according to claim 1, characterized in that: The material of the bin (14) is a steel structure, and the main materials of the first screw conveyor (2) and the second screw conveyor (8) are carbon steel Q235-B and cast iron.

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