Direct-fired hot blast stove

Abstract

The utility model discloses a direct-fired hot-blast stove, which relates to the technical field of hot-blast stoves and comprises a stove body, the side wall of one end of the stove body is provided with a circular steering groove, and the section of the steering groove is semicircular; the flange pipe is arranged on the side wall of the furnace body, and the flange pipe is located at the circle center of the steering groove; the inner container is located in the furnace body, one port of the inner container is provided with a necking pipe, and the necking pipe penetrates through the side wall of the other end of the furnace body; the other port of the inner container is over against the steering groove; the positioning pipes are annularly arranged and penetrate through the side wall of the furnace body, the periphery of the necking pipe is surrounded by the positioning pipes, and induced draft fans are arranged in the positioning pipes; the second heat conduction rods are uniformly arranged on the outer circumferential wall of the inner container; the first heat conducting rods are uniformly arranged on the inner circumferential wall of the inner container and correspond to the second heat conducting rods, and the first heat conducting rods penetrate through the inner container and are integrated with the second heat conducting rods; the air supply device has the advantages of convenience in use, more uniform air supply and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hot blast stove, in particular to a direct combustion hot blast stove. BACKGROUND

[0002] The direct combustion hot blast stove mainly produces hot air by heating air through a burner, such as patent application No. CN202321869147.5 discloses a direct hot blast stove. Cold air enters from the air distribution pipe 11, is preheated through the spiral preheating air duct 5, contacts and mixes with the hot air generated by the burner 2, and flows together to the flue gas outlet direction of the furnace barrel 3. In the flow process, the air in the middle part is guided to the four directions by the air guide piece 13 when passing through the air guide piece 13, so that the cold and hot air are better mixed, and finally discharged from the flue gas outlet. In the flow process of the cold air, heat can be absorbed from the outer side wall of the furnace barrel 3. The cold air and the flue gas in the furnace barrel 3 flow in opposite directions, effectively reducing the outer surface temperature of the furnace barrel 3 and the inner surface temperature of the jacket 1, and preheating before entering the furnace barrel 3. The hot air sent into the furnace barrel 3 by the burner 2 will diffuse to the four directions when flowing to the air guide piece 13, and better mix with the cold air sent by the air distribution pipe 11, so that the hot blast stove outlet air temperature is more uniform.

[0003] The hot blast stove in the prior art is a common hot blast stove. In the process of use, there is an air distribution pipe. The air enters the preheating air duct through the air distribution pipe. Since the air distribution pipe in the prior art is arranged on the side of the hot blast stove, the air flow is not uniform. Even if the preheating air duct is arranged in a spiral shape, there is still a problem of unevenness, resulting in uneven oxygen supply to the burner. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a direct combustion hot blast stove to solve the problem of uneven air flow in the prior art described in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a direct combustion hot blast stove, comprising

[0006] The furnace body has a circular turning groove on one end side wall, and the cross section of the turning groove is semicircular;

[0007] The flange pipe is arranged on the side wall of the furnace body, and the flange pipe is located at the center of the turning groove;

[0008] The inner barrel is located in the furnace body, and one end of the inner barrel has a neck tube which penetrates through the other end side wall of the furnace body;

[0009] The other end of the inner barrel is opposite to the turning groove;

[0010] A plurality of positioning pipes are arranged in a ring shape and penetrate the side wall of the furnace body, and a plurality of the positioning pipes surround the neck pipe, and a fan is arranged in the positioning pipe;

[0011] A plurality of second heat-conducting rods are uniformly arranged on the outer circumferential wall of the inner container;

[0012] A plurality of first heat-conducting rods are uniformly arranged on the inner circumferential wall of the inner container corresponding to the positions of the second heat-conducting rods, and the first heat-conducting rods penetrate the inner container and are integrated with the second heat-conducting rods.

[0013] Preferably, the open end of the inner container extends into the turning groove.

[0014] Preferably, the neck pipe is rotationally connected with the side wall of the furnace body, a positioning sleeve is rotationally arranged on the end of the inner container away from the neck pipe, and the positioning sleeve is fixedly connected with the inner wall of the furnace body through a connecting rod.

[0015] Preferably, the inner wall of the inner container is fixedly connected with a gear ring, a servo motor is arranged on the side wall of the furnace body, and the output end of the servo motor is fixedly connected with a gear engaged with the gear ring.

[0016] Preferably, the first heat-conducting rods and the second heat-conducting rods are made of copper alloy or aluminum alloy.

[0017] The above technical scheme has the following beneficial effects:

[0018] The inner container can rotate in the furnace body, can drive the first heat-conducting rods and the second heat-conducting rods to rotate, and can better realize heat transfer, and the plurality of fans arranged in the application can uniformly introduce air into the gap between the inner container and the furnace body, and the turning groove makes the excessive turning of the air more stable. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of a direct-fired hot blast stove of the utility model.

[0020] Figure 2 is a sectional view of a direct-fired hot blast stove of the utility model.

[0021] Figure 3 is a sectional view of the inner container capable of rotating of the utility model.

[0022] Wherein: the furnace body 10, the turning groove 20, the flange pipe 30, the inner container 40, the neck pipe 41, the air outlet pipe 42, the fan 50, the positioning pipe 51, the positioning sleeve 60, the connecting rod 61, the gear ring 70, the gear 71, the servo motor 72, the first heat-conducting rod 80, and the second heat-conducting rod 81. DETAILED DESCRIPTION

[0023] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0024] like Figures 1-3 In this first embodiment, a direct-fired hot air furnace includes...

[0025] The furnace body 10 has a circular turning groove 20 on one side wall, and the cross-section of the turning groove 20 is semi-circular.

[0026] Flange pipe 30 is installed on the side wall of furnace body 10, and the flange pipe 30 is located at the center of turning groove 20;

[0027] The inner liner 40 is located inside the furnace body 10. One end of the inner liner 40 has a constricted tube 41, which penetrates the other side wall of the furnace body 10.

[0028] The other end of the inner liner 40 is directly opposite the steering groove 20;

[0029] A number of positioning tubes 51 are arranged in a ring and penetrate the side wall of the furnace body 10. The positioning tubes 51 surround the constricted tube 41 and an induced draft fan 50 is installed inside the positioning tube 51.

[0030] Several second heat-conducting rods 81 are evenly arranged on the outer circumferential wall of the inner liner 40;

[0031] A plurality of first heat-conducting rods 80 are evenly disposed on the inner circumferential wall of the inner liner 40 at positions corresponding to the second heat-conducting rods 81. The first heat-conducting rods 80 penetrate the inner liner 40 and are integral with the second heat-conducting rods 81.

[0032] This embodiment is implemented as follows:

[0033] In use, the induced draft fan 50 in the multiple positioning pipes 51 can evenly introduce external air between the inner liner 40 and the furnace body 10. The air flows into the inner liner through the turning groove 20, which can provide uniform air around the burner installed on the flange pipe 30, improving the completeness of combustion. After the first heat-conducting rod 80 in the inner liner 40 absorbs heat, it can transfer the heat energy to the second heat-conducting rod 81, thereby preheating the air between the inner liner 40 and the furnace body 10.

[0034] The advantage of this application over the prior art is that it can provide air evenly and has a good preheating effect on the air.

[0035] Please see Figure 2 , 3 The open end of the inner liner 40 extends into the steering groove 20.

[0036] By inserting one open end of the inner liner 40 into the steering groove 20, the air steering becomes smoother and resistance is reduced.

[0037] Please see Figure 2 ,3 The necking tube 41 is rotationally connected with the side wall of the furnace body 10, and the inner container 40 is rotationally sleeved with a positioning sleeve 60 at an end away from the necking tube 41, and the positioning sleeve 60 is fixedly connected with the inner wall of the furnace body 10 through a connecting rod 61.

[0038] By rotationally connecting the necking tube 41 with the side wall of the furnace body 10 and rotationally connecting the inner container 40 with the positioning sleeve 60, the inner container 40 can be rotated, so that the heat conduction efficiency of the first heat conduction rod 80 and the second heat conduction rod 81 is higher.

[0039] Please refer to Figure 3 The inner wall of the inner container 40 is fixedly connected with a tooth ring 70, and the side wall of the furnace body 10 is provided with a servo motor 72, and the output end of the servo motor 72 is fixedly connected with a gear 71 engaged with the tooth ring 70.

[0040] The servo motor 72 can drive the gear 71 to rotate, the gear 71 drives the tooth ring 70 to rotate, and the tooth ring 70 drives the inner container 40 to rotate in the positioning sleeve 60.

[0041] Please refer to Figure 2 、 3 The first heat conduction rod 80 and the second heat conduction rod 81 are both made of copper alloy or aluminum alloy.

[0042] The first heat conduction rod 80 and the second heat conduction rod 81 made of copper alloy or aluminum alloy have stronger heat conduction performance.

[0043] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A direct-fired hot blast stove, characterized in that Comprising A furnace body, one end of the side wall has a circular deflection groove, the cross section of the deflection groove is semicircular; A flange pipe is arranged on the side wall of the furnace body, and the flange pipe is located at the center of the deflection groove; An inner container is located in the furnace body, and one end of the inner container has a neck tube which penetrates the other end of the side wall of the furnace body; Wherein, the other end of the inner container is opposite to the deflection groove; A plurality of positioning pipes are arranged in a ring shape and penetrate the side wall of the furnace body, and the positioning pipes are arranged around the neck tube, and an air guide fan is arranged in the positioning pipe; A plurality of second heat conducting rods are uniformly arranged on the outer circumferential wall of the inner container; A plurality of first heat conducting rods are uniformly arranged on the inner circumferential wall of the inner container corresponding to the positions of the second heat conducting rods, and the first heat conducting rods penetrate the inner container and are integrated with the second heat conducting rods.

2. A direct-fired hot air furnace as defined in claim 1, wherein The open end of the inner container extends into the deflection groove.

3. A direct-fired hot air furnace as set forth in claim 1 wherein, The neck tube is rotationally connected with the side wall of the furnace body, and a positioning sleeve is rotationally arranged on the end of the inner container away from the neck tube, and the positioning sleeve is fixedly connected with the inner wall of the furnace body through a connecting rod.

4. A direct-fired hot air furnace as set forth in claim 3 wherein, The inner wall of the inner container is fixedly connected with a gear ring, and a servo motor is arranged on the side wall of the furnace body, and the output end of the servo motor is fixedly connected with a gear engaged with the gear ring.

5. A direct-fired hot air furnace as set forth in claim 1 wherein, The first heat conducting rod and the second heat conducting rod are made of copper alloy or aluminum alloy.

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