Self-flow discharging device of combustion chamber

Abstract

The utility model discloses a hot-blast stove combustion chamber self-flow discharging device which comprises a collecting hopper and an air blocking valve, the collecting hopper is installed below a combustion chamber, an inlet of the collecting hopper is communicated with the combustion chamber, and one end, far away from the combustion chamber, of the collecting hopper is an outlet of the collecting hopper. An outlet of the collecting hopper is connected with the receiving container through a pipeline, and the blocking valve is arranged at the outlet of the collecting hopper and used for connecting or disconnecting the collecting hopper and the receiving container. During application, in an initial state, the air blocking valve is closed, the collecting hopper is disconnected from the pipeline, normal operation of the hot blast stove is not affected, along with increase of operation time, materials are gradually accumulated in the combustion chamber, the materials in the collecting hopper are gradually increased, and when the materials in the collecting hopper reach a certain amount, the air blocking valve can be opened to discharge the materials. The accumulated materials in the combustion chamber can be discharged without blowing out the furnace, operation is convenient, and normal operation of the combustion chamber is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, in particular to a combustion chamber gravity discharge device. Background Art

[0002] Gas or liquid fuel combustion chambers (furnaces) are used to heat the air for conveying powdered materials, including but not limited to aluminum hydroxide gas suspension roasting furnaces, iron ore powder suspension magnetization roasting furnaces, magnesium ore powder suspension roasting furnaces, etc. At present, during the use of gas or liquid fuel combustion chambers (furnaces), materials accumulate in the combustion chambers, which requires the furnace to be stopped for cleaning, affecting the normal operation of the entire furnace system. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a combustion chamber gravity discharge device to eliminate the accumulation of materials in the combustion chamber and ensure the normal operation of the combustion chamber.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A combustion chamber gravity discharge device, comprising:

[0006] A collecting hopper, the collecting hopper is installed below the combustion chamber, and the inlet of the collecting hopper is connected to the combustion chamber, the end of the collecting hopper away from the combustion chamber is the outlet of the collecting hopper, and the outlet of the collecting hopper is connected to the material receiving container through a pipeline;

[0007] An air lock valve is arranged at the outlet of the collecting hopper, and is used to connect or disconnect the combustion chamber with the material receiving container.

[0008] Optionally, the aggregate hopper is provided with a refractory lining.

[0009] Optionally, the material receiving container is a cooling cyclone.

[0010] Optionally, the collecting hopper tapers from an inlet of the collecting hopper to an outlet of the collecting hopper.

[0011] Optionally, the inner bottom surface of the collecting hopper is a conical surface that tapers downward, and the outlet of the collecting hopper is arranged at the lowest point of the inner bottom surface of the collecting hopper.

[0012] Optionally, the air lock valve comprises a valve body, a valve plate and a counterweight mechanism, wherein the valve plate is movably disposed in the valve body, and the counterweight mechanism is connected to the valve plate, and drives the valve plate to move in the valve body under the action of gravity, thereby connecting or disconnecting the collecting hopper and the receiving container. Optionally, two air lock valves are disposed on the pipeline, and the two air lock valves are spaced apart above and below the pipeline.

[0013] To achieve the above-mentioned purpose, the utility model provides a combustion chamber self-flowing discharge device, which includes a collecting hopper and an air lock valve, wherein the collecting hopper is installed below the combustion chamber, one end of the combustion chamber is connected to the burner, and the other end is connected to the hot air flue, and the inlet of the collecting hopper is connected to the combustion chamber, and the end of the collecting hopper away from the combustion chamber is the outlet of the collecting hopper, and the outlet of the collecting hopper is connected to the material receiving container through a pipeline, and the air lock valve is arranged at the outlet of the collecting hopper, and the air lock valve is used to connect or disconnect the combustion chamber with the material receiving container.

[0014] When in use, in the initial state, the air lock valve is in a closed state, disconnecting the combustion chamber from the material receiving container, which does not affect the normal operation of the hot blast furnace. As the operating time increases, materials gradually begin to accumulate in the combustion chamber, and the material in the collecting hopper gradually increases. When the material in the collecting hopper reaches a certain amount, the air lock valve automatically opens to discharge the material to reduce the accumulation in the combustion chamber. The discharge of the accumulated material in the combustion chamber can be achieved without stopping the furnace, which is convenient for operation and does not affect the normal operation of the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A front view of a combustion chamber gravity discharge device provided by an embodiment of the utility model;

[0017] Figure 2 A side view of a combustion chamber gravity discharge device provided by an embodiment of the utility model;

[0018] Figure 3 A partial structural front view of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided by an embodiment of the utility model;

[0019] Figure 4 A side view of the partial structure of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided by an embodiment of the utility model;

[0020] Figure 5 A front view of a combustion chamber gravity discharge device provided by another embodiment of the utility model;

[0021] Figure 6 A side view of a combustion chamber gravity discharge device provided by another embodiment of the utility model;

[0022] Figure 7A front view of the partial structure of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided by another embodiment of the utility model;

[0023] Figure 8 A side view of the partial structure of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided by another embodiment of the utility model;

[0024] Fig. 9 A partial structural front view of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided by another embodiment of the utility model;

[0025] Fig.10 A side view of the partial structure of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided in yet another embodiment of the utility model.

[0026] In the figure:

[0027] 1 is a combustion chamber; 2 is a collecting hopper; 3 is a pipeline; 4 is a burner; 5 is a hot air flue; 6 is a valve plate; 7 is a driving rod; 8 is a counterweight block; 9 is a rotating shaft; and 10 is a slide. DETAILED DESCRIPTION

[0028] The core of the utility model is to provide a combustion chamber self-flowing discharge device, the structural design of which can eliminate the accumulation of materials in the combustion chamber and ensure the normal operation of the combustion chamber.

[0029] 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.

[0030] See also Figures 1 to 4 , Figure 1 This is a front view of a combustion chamber gravity discharge device provided by an embodiment of the utility model. Figure 2 A side view of a combustion chamber gravity discharge device provided by an embodiment of the utility model, Figure 3 This is a partial structural front view of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided by an embodiment of the utility model. Figure 4 A side view of the partial structure of a collecting hopper and a pipeline of a combustion chamber gravity discharge device provided in one embodiment of the utility model.

[0031] A combustion chamber gravity discharge device provided in an embodiment of the utility model comprises a collecting hopper 2 and an air lock valve.

[0032] Among them, the collecting hopper 2 is installed below the combustion chamber 1, one end of the combustion chamber 1 is connected to the burner 4, and the other end is connected to the hot air flue 5, and the inlet of the collecting hopper 2 is connected to the combustion chamber 1, and the end of the collecting hopper 2 away from the combustion chamber 1 is the outlet of the collecting hopper 2, and the outlet of the collecting hopper 2 is connected to the material receiving container through the pipeline 3, and the air lock valve is arranged on the pipeline 3, and the air lock valve is used to connect or disconnect the combustion chamber 1 with the material receiving container. The above-mentioned collecting hopper 2 should be designed as a fire-resistant and high-temperature resistant structure or made of fire-resistant and high-temperature resistant materials. The size of the collecting hopper 2, the air lock valve and the pipeline 3 should be adaptively designed according to the size of the combustion chamber 1.

[0033] Compared with the prior art, the combustion chamber gravity discharge device provided by the utility model, when in use, in the initial state, the air lock valve is closed, the combustion chamber 1 is disconnected from the material receiving container, and the normal operation of the hot blast furnace is not affected. As the operating time increases, materials gradually begin to accumulate in the combustion chamber 1, and the material in the collecting hopper 2 gradually increases. When the material in the collecting hopper 2 reaches a certain amount, the air lock valve automatically opens to discharge the material to reduce the accumulated material in the combustion chamber 1. The accumulated material in the combustion chamber 1 can be discharged without stopping the furnace, which is convenient for operation and does not affect the normal operation of the combustion chamber 1.

[0034] from Figure 1 It can be seen that one end of the combustion chamber 1 is connected to the burner 4, and the other end is connected to the hot air flue 5. The hot air flue 5 has powdery particles during operation. To ensure that the collecting hopper 2 has a good material accumulation effect, in the embodiment of the utility model, the inlet length of the collecting hopper 2 is not less than one-third of the length of the combustion chamber 1, and the collecting hopper 2 should be arranged close to the hot air flue 5. The distance between the inlet of the collecting hopper 2 and the hot air flue 5 is preferably about one-quarter of the length of the combustion chamber 1.

[0035] Specifically, in the embodiment of the utility model, the above-mentioned aggregate hopper 2 is provided with a refractory lining. By providing the fireproof lining, the fire resistance and high temperature resistance of the aggregate hopper 2 can be improved, and its service life can be increased, avoiding failure or damage under the influence of high temperature, which affects the discharge effect.

[0036] It should be noted that the material receiving container may be a separate and specially provided container, or may be an original component of the hot blast furnace. For example, in a specific embodiment, the material receiving container is a cooling cyclone.

[0037] In order to improve the discharge effect of the collecting hopper 2 and gather the outlet positions of the material boxes in the collecting hopper 2, in an embodiment of the utility model, the collecting hopper 2 gradually shrinks from the inlet of the collecting hopper 2 to the outlet of the collecting hopper 2.

[0038] Furthermore, in the embodiment of the utility model, the inner bottom surface of the hopper 2 is a tapered surface that tapers downward, and the outlet of the hopper 2 is arranged at the lowest point of the inner bottom surface of the hopper 2, so that it is not easy for materials in the hopper 2 to not move to the outlet of the hopper 2.

[0039] On the basis of the above-mentioned embodiment, a vibration device may be further provided on the outer side of the collecting hopper 2 to vibrate the collecting hopper 2, so as to avoid the situation that the materials in the collecting hopper 2 are piled up and do not move.

[0040] Specifically, Figure 3 and Figure 4 As shown, the air lock valve includes a valve body, a valve plate 6 and a counterweight mechanism. The valve body can be an integral structure with the pipeline 3 or a split structure with the pipeline 3. Flanges are respectively arranged at both ends of the valve body to connect with the pipeline 3. The valve plate 6 is movably arranged in the valve body. The counterweight mechanism is connected to the valve plate 6, and the valve plate 6 is driven to move in the valve body under the action of gravity to connect or disconnect the collecting hopper 2 with the receiving container.

[0041] Specifically, in one embodiment, Figure 3 and Figure 4 As shown, the counterweight mechanism includes a driving rod 7 and a counterweight block 8, wherein one end of the driving rod 7 is connected to the rotating shaft 9 of the valve plate 6. When a force is applied to the driving rod 7, the driving rod 7 can drive the valve plate 6 to rotate. The counterweight block 8 is arranged at the other end of the driving rod 7. When the valve plate 6 carries material exceeding a preset weight, the valve plate 6 rotates downward under the action of the material, driving the driving rod 7 to flip upward. When the material slides down, the valve plate 6 is reset under the action of the counterweight block 8.

[0042] It should be noted that two air lock valves can be provided on the pipeline 3, such as Figures 5 to 8 As shown, in another embodiment of the present invention, the two air lock valves are arranged at an interval up and down, so that when the valve plate 6 of the upper air lock valve carries material exceeding the preset weight, the valve plate 6 rotates downward under the action of the material, driving the driving rod 7 to flip upward. After the material falls, the valve plate 6 of the upper air lock valve is reset under the action of the counterweight block 8. At this time, the material slides to the valve plate 6 of the lower air lock valve. When the valve plate 6 of the lower air lock valve carries material exceeding the preset weight, the valve plate 6 of the lower air lock valve rotates downward under the action of the material, driving the driving rod 7 to flip upward, and the material continues to fall. Since there is a time difference between the material falling from the valve plate 6 of the upper air lock valve to the valve plate 6 of the lower air lock valve and reaching the preset weight, the valve plate 6 of the upper air lock valve and the valve plate 6 of the lower air lock valve will not be opened at the same time, thereby effectively achieving the air locking effect and improving the air tightness.

[0043] like Fig. 9 and Fig.10As shown, in another embodiment, the counterweight block 8 can be freely slidably arranged on the driving rod 7, and a slide groove 10 is arranged on the driving rod 7. The slide groove 10 extends along the length direction of the driving rod 7. When the counterweight block 8 slides along the slide groove 10 to a first limit position away from the valve plate 6, the valve plate 6 disconnects the collecting hopper 2 from the material receiving container. When the counterweight block 8 slides to a second limit position close to the valve plate 6, the valve plate 6 connects the collecting hopper 2 with the material receiving container. In the initial state, the counterweight block 8 is in the first limit position, the air lock valve is closed, and the material on the valve plate 6 gradually increases. When the weight of the material increases to a point where the torque acting on the valve plate 6 is greater than the torque acting on the valve plate 6 by the counterweight block 8 and the driving rod 7 When the torque on the valve plate 6 is applied, the valve plate 6 rotates under the action of the material, and the counterweight 8 rotates upward with the driving rod 7. When the counterweight 8 rotates past the horizontal position with the driving rod 7, the counterweight 8 slides to the second limit position under the action of its own gravity. In this way, since the counterweight 8 is close to the rotating shaft 9 of the valve plate 6, the torque acting on the valve plate 6 is reduced. Therefore, although the material on the valve plate 6 is reduced due to the inclination of the valve plate 6, the valve plate 6 will not be reset immediately at this time, thereby ensuring that the material on the valve plate 6 has sufficient time to fall. When all the material on the valve plate 6 falls into the pipeline 3, the valve plate 6 is reset under the action of the counterweight 8 and the driving rod 7, and the counterweight 8 returns to the first limit position.

[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combustion chamber (1) gravity discharge device, characterized in that: include: A material collecting hopper (2), the material collecting hopper (2) is installed below the combustion chamber (1), and the inlet of the material collecting hopper (2) is connected to the combustion chamber (1), the end of the material collecting hopper (2) away from the combustion chamber (1) is the outlet of the material collecting hopper (2), and the outlet of the material collecting hopper (2) is connected to a material receiving container through a pipeline (3); An air lock valve is arranged at the outlet of the collecting hopper (2), and is used to connect or disconnect the combustion chamber (1) of the collecting hopper (2) and the material receiving container of the pipeline (3).

2. The gravity discharge device of the combustion chamber (1) according to claim 1, characterized in that: The collecting hopper (2) pipe (3) is provided with a refractory lining.

3. The gravity discharge device of the combustion chamber (1) according to claim 1, characterized in that: The material receiving container is a cooling cyclone.

4. The gravity discharge device of the combustion chamber (1) according to any one of claims 1 to 3, characterized in that: The collecting hopper (2) gradually contracts from the inlet of the collecting hopper (2) to the outlet of the collecting hopper (2).

5. The gravity discharge device of the combustion chamber (1) according to any one of claims 1 to 3, characterized in that: The inner bottom surface of the collecting hopper (2) is a conical surface that tapers downwards, and the outlet of the collecting hopper (2) is arranged at the lowest point of the inner bottom surface of the collecting hopper (2).

6. The gravity discharge device of the combustion chamber (1) according to any one of claims 1 to 3, characterized in that: The air lock valve comprises a valve body, a valve plate (6) and a counterweight mechanism, wherein the valve plate (6) is movably arranged in the valve body, and the counterweight mechanism is connected to the valve plate (6) and drives the valve plate (6) to move in the valve body under the action of gravity, thereby connecting or disconnecting the collecting hopper (2) and the receiving container pipeline (3).

7. The gravity discharge device of the combustion chamber (1) according to any one of claims 1 to 3, characterized in that: The pipeline (3) is provided with two air lock valves, and the two air lock valves are arranged at intervals above and below the pipeline (3).

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