Combustion conveyor

Abstract

The utility model discloses a combustion conveyor which comprises a storage tank and a feed port arranged at the upper end of the storage tank, the left side of the bottom of the storage tank is connected with a feeding mechanism, the bottom of the storage tank is provided with a transmission mechanism, and the feeding mechanism comprises a vertical rotary feeder, a blanking port, a discharge port, a guide pipe and a discharge pipe. The vertical rotary feeder has the advantages that the 180-degree non-concentric design is adopted for the blanking port and the discharging port of the vertical rotary feeder, the phenomenon of blanking interruption caused by air source pressure reverse blowing is avoided, meanwhile, the variable-frequency speed reducer motor is matched, the rotating speed can be adjusted, and therefore the material passing amount can be adjusted and controlled; a reducing structure is additionally arranged at the compressed air inlet end of the discharging pipe, pulverized coal is injected with low air flow and low pressure intensity, an air supplementing pipe is additionally arranged at the reducing position of a pipeline, and therefore the gas vortex phenomenon is disturbed, and stable and continuous conveying is achieved; the air pressure in the discharging pipe is balanced to be stable, and the phenomena of combustion interruption and unstable injection are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to combustion conveyor technical field, concretely is a kind of combustion conveyor. BACKGROUND

[0002] With the rise of construction industry, cement, lime is indispensable product in industry, coal injection combustion more in raw material processing played a key role, commonly used burner uses ordinary coal injection pipeline and horizontal feeder, feeding machine blade cannot withstand material scouring in running process, and in the case of gas source pressure, the type of feeder cannot achieve gas locking effect, easy to cause material back blow, so that combustion is unstable, prone to flameout, waste raw materials and other problems occur. Make the input cost and labor increase, and the current existing combustion equipment generally exists unstable, combustion is not sufficient, and equipment is shabby, and cannot realize the adjustable control of material passing amount. Existing conveyor is mainly star type dust valve, coal injection pipeline is mainly ordinary pipeline and screw fan cooperation, although relatively economical in price, but its drawbacks are numerous, short service life, unstable injection, adjustable conveying capacity, cannot realize continuous injection.

[0003] It should be noted that the above content belongs to the technical cognition of the inventor and does not necessarily constitute the prior art. CONTENT OF UTILITY MODEL

[0004] In view of the above defects, the utility model provides a kind of combustion conveyor to solve the problem of combustion conveyor feeding.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of combustion conveyor, including storage tank and open in storage tank top feed inlet, the left side of the bottom of storage tank is connected with feeding mechanism, and the bottom of storage tank is equipped with transmission mechanism;

[0007] Feeding mechanism includes vertical rotary feeder, blanking port, discharge port, guide tube and discharge pipe, the vertical rotary feeder is installed in the bottom of storage tank, the blanking port is opened in the cover plate of vertical rotary feeder, the discharge port is opened in the bottom plate of vertical rotary feeder, the guide tube is inserted in discharge port, and the upper end of discharge pipe is communicated with guide tube.

[0008] Further, transmission mechanism includes bearing seat, variable frequency reducer motor, rotating shaft, impeller and stirring device, the bearing seat is installed in the bottom of vertical rotary feeder, the variable frequency reducer motor rotating end is movably inserted in bearing seat, the rotating shaft is installed on the variable frequency reducer motor rotating end, the impeller is installed on the rotating shaft, and located in vertical rotary feeder, the stirring device is installed on the upper end of rotating shaft, and located in storage tank.

[0009] Further, the bearing seat is provided with a rotating speed detection opening.

[0010] Further, the vertical rotary feeder is provided with an air inlet pipe on the left side of the upper end.

[0011] Further, the blanking port and the discharge port are arranged at 180° and are different in center.

[0012] Further, the air inlet end of the discharge pipe is provided with a reducing structure, and the reducing structure is connected with a gas supplement pipe.

[0013] The utility model provides a kind of combustion conveyor, with following beneficial effects, vertical rotary feeder is used, blanking port and discharge port 180° different in center design and impeller piece match small gap to ensure processing process, to ensure feeder gap, avoid gas source pressure blowback, cause blanking interruption phenomenon, use wear-resistant coating treatment to increase service life;

[0014] Bearing seat (internal bearing, balance gas path, purging gas path) is used, to ensure service life and dust pollution, while cooperating with frequency conversion speed reducer motor, realize rotating speed adjustable, so as to realize that the amount of passing material is adjustable and controllable;

[0015] Variable diameter structure is added to the compressed air inlet end of the discharge pipe, to achieve lower gas volume and smaller pressure to spray coal powder, while preventing the influence of gas flow stability caused by the change of pipe diameter at the air inlet end of the discharge pipe, a gas supplement pipe is added at the pipe variable diameter, to realize the phenomenon of breaking gas vortex, achieve stable and continuous conveying, and a pressure switch is connected to the gas supplement pipe to balance the internal gas pressure of the discharge pipe, solve the phenomenon of combustion interruption and unstable spraying. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the combustion conveyor.

[0017] Figure 2 It is a top view of the vertical rotary feeder.

[0018] Figure 3 It is a side view of the combustion conveyor.

[0019] In the figure: 1, storage tank; 2, feed inlet; 3, vertical rotary feeder; 4, blanking port; 5, discharge port; 6, guide pipe; 7, discharge pipe; 8, bearing seat; 9, frequency conversion speed reducer motor; 10, rotating shaft; 11, impeller; 12, stirring device; 13, rotating speed detection opening; 14, air inlet pipe; 15, reducing structure; 16, gas supplement pipe. DETAILED DESCRIPTION

[0020] The utility model will be specifically described in combination with the drawings, such as Figures 1-3As shown: a combustion conveyor, including a storage tank 1 and open on the upper end of the storage tank 1 feed port 2, the left side of the bottom of the storage tank 1 is connected with the feeding mechanism, the bottom of the storage tank 1 is provided with transmission mechanism; feeding mechanism includes vertical rotary feeder 3, blanking port 4, discharge port 5, guide pipe 6 and discharge pipe 7, the vertical rotary feeder 3 is installed at the bottom of the storage tank 1, the blanking port 4 is opened in the cover plate of the vertical rotary feeder 3, the discharge port 5 is opened in the bottom plate of the vertical rotary feeder 3, the guide pipe 6 is inserted in the discharge port 5, and the upper end of the discharge pipe 7 communicates with the guide pipe 6; transmission mechanism includes bearing seat 8, variable frequency reducer motor 9, rotating shaft 10, impeller 11 and stirring device 12, the bearing seat 8 is installed at the bottom of the vertical rotary feeder 3, the rotating end of the variable frequency reducer motor 9 is movably inserted in the bearing seat 8, the rotating shaft 10 is installed on the rotating end of the variable frequency reducer motor 9, the impeller 11 is installed on the rotating shaft 10 and located in the vertical rotary feeder 3, the stirring device 12 is installed on the upper end of the rotating shaft 10 and located in the storage tank 1; the rotating speed detection port 13 is opened at the bearing seat 8; the air inlet pipe 14 is inserted on the left side of the upper end of the vertical rotary feeder 3; the blanking port 4 and the discharge port 5 are arranged in 180° different concentrically; the air inlet end of the discharge pipe 7 is provided with a variable diameter structure 15, and the variable diameter structure 15 is connected with a gas supplementing pipe 16.

[0021] The working principle of the embodiment is as follows: the material of the discharge pipe 7 is selected from high hardness and wear resistant materials such as 316L, 40Cr, etc., and the wear resistant coating is selected according to different conveying materials. In general, tungsten carbide is sprayed, and in individual cases, ceramic or other wear resistant layers are used. The spraying position includes all parts in contact with the material;

[0022] When feeding: the vertical rotary feeder 3 is installed at the bottom of the storage tank 1, the blanking port 4 is opened in the cover plate of the vertical rotary feeder 3, the discharge port 5 is opened in the bottom plate of the vertical rotary feeder 3, the guide pipe 6 is inserted in the discharge port 5, the upper end of the discharge pipe 7 communicates with the guide pipe 6, the air inlet pipe 14 is inserted on the left side of the upper end of the vertical rotary feeder 3, the bearing seat 8 is installed at the bottom of the vertical rotary feeder 3, the rotating end of the variable frequency reducer motor 9 is movably inserted in the bearing seat 8, the rotating shaft 10 is installed on the rotating end of the variable frequency reducer motor 9, the impeller 11 is installed on the rotating shaft 10 and located in the vertical rotary feeder 3, the stirring device 12 is installed on the upper end of the rotating shaft 10 and located in the storage tank 1, and the rotating speed detection port 13 is opened at the bearing seat 8, as shown in Figure 1 and Figure 2

[0023] ​During the use of the burner, the problem of changing the concentricity between the material falling port and the material outlet port of the original horizontal feeder is solved, the material falling interruption or the material jamming phenomenon of the material falling port 5 caused by the back blowing of the air pressure from the material outlet port 5 and the uneven gap of the impeller 11 is avoided, the rotating speed of the impeller 11 is controlled through the frequency conversion speed reducer motor 9, the feedback rotating speed of the bearing seat 8 is implemented to cooperate with the impeller 11, the relatively closed space is formed between the upper cover plate and the bottom plate of the vertical rotary feeder 3, the material passing amount is stably controlled, the precise control and the real-time monitoring are achieved, in addition, the discharge pipe 7 under the normal working environment is contacted with the pulverized coal to be conveyed during the operation, the mutual friction is generated, the generation of the situation will cause a certain wear of the discharge pipe 7, the material passing amount and the stability are affected, the variable diameter structure 15 is added to the air inlet end of the discharge pipe 7, the pulverized coal is sprayed with lower air quantity and smaller pressure, the air supplement pipe 16 is added at the variable diameter position of the pipe to prevent the change of the pipe diameter of the air inlet end of the discharge pipe 7 from affecting the air flow stability, so that the air vortex phenomenon is disturbed, the stable and continuous conveying is achieved, the air supplement pipe 16 is added and connected with the pressure switch, so that the air pressure inside the pipe is balanced and stable, the combustion interruption and the unstable spraying phenomenon are solved.

[0024] The above technical scheme only embodies the preferred technical scheme of the utility model, and some changes made by the person skilled in the art to some parts of the utility model also embody the principle of the utility model and are within the protection scope of the utility model.

Claims

1. A combustion conveyor comprising a storage tank (1) and a feed inlet (2) opened on the upper end of the storage tank (1), characterized in that, The left bottom of the storage tank (1) is connected with a feeding mechanism, and the bottom of the storage tank (1) is provided with a transmission mechanism. The feeding mechanism comprises a vertical rotary feeder (3), a blanking port (4), a discharging port (5), a material guide pipe (6) and a discharging pipe (7), the vertical rotary feeder (3) is installed at the bottom of the storage tank (1), the blanking port (4) is opened on the cover plate of the vertical rotary feeder (3), the discharging port (5) is opened on the bottom plate of the vertical rotary feeder (3), the material guide pipe (6) is inserted into the discharging port (5), and the upper end of the discharging pipe (7) is communicated with the material guide pipe (6).

2. A combustion conveyor as claimed in claim 1, wherein The transmission mechanism comprises a bearing seat (8), a variable frequency speed reducer motor (9), a rotating shaft (10), an impeller (11) and a stirring device (12), the bearing seat (8) is installed at the bottom of the vertical rotary feeder (3), the rotating end of the variable frequency speed reducer motor (9) is movably inserted into the bearing seat (8), the rotating shaft (10) is installed on the rotating end of the variable frequency speed reducer motor (9), the impeller (11) is installed on the rotating shaft (10) and located in the vertical rotary feeder (3), and the stirring device (12) is installed on the upper end of the rotating shaft (10) and located in the storage tank (1).

3. A combustion conveyor as claimed in claim 2, wherein A rotating speed detection port (13) is formed in the bearing seat (8).

4. A combustion conveyor as claimed in claim 1, wherein An air inlet pipe (14) is movably inserted into the left upper end of the vertical rotary feeder (3).

5. A combustion conveyor as defined in claim 1, wherein The blanking port (4) and the discharging port (5) are arranged in a 180° eccentric manner.

6. A combustion conveyor as defined in claim 1, wherein A variable diameter structure (15) is arranged at the air inlet end of the discharging pipe (7), and a gas supplement pipe (16) is connected to the variable diameter structure (15).

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