Energy-saving efficient top combustion hot blast stove

Abstract

The utility model discloses an energy-saving efficient top combustion type hot blast stove, which belongs to the technical field of hot blast stoves and specifically comprises a stove body, a combustion chamber, a heat storage chamber and a mixing chamber are arranged in the stove body, a hot air pipeline is arranged on the side wall of the combustion chamber, and a smoke pipeline and a cold air pipeline are arranged on the side wall of the heat storage chamber. A gas pipeline and an air pipeline are arranged on the side wall of the mixing chamber; the air inlet end of the air pipeline is connected with an air filtering mechanism, the air filtering mechanism comprises a filtering pipeline, the filtering pipeline is communicated with the air pipeline, the air inlet end of the filtering pipeline is detachably connected with a filtering cover, and the filtering cover is fixedly connected with a filtering cylinder extending into the filtering pipeline; a top shell of the filter cartridge is detachably connected with a mounting frame, and the mounting frame is fixedly connected with a negative pressure fan; particles or dust in the air can be filtered, particulate matters such as dust and impurities in the air are prevented from directly entering the combustion chamber, and the combustion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hot -blast stove technical field, concretely relates to a kind of energy-saving efficient top combustion hot -blast stove. BACKGROUND

[0002] Hot blast stove is the equipment for providing hot blast for blast furnace, and is an indispensable important component of modern blast furnace. The most commonly used for modern large blast furnace is regenerative checker hot blast stove. Regenerative hot blast stove can be divided into top combustion, internal combustion, external combustion and several other ways according to combustion mode. Its working principle is to burn gas first, heat the checker of regenerative chamber with the generated flue gas, then heat the cold air through the hot checker, and then the hot blast stove alternately burns and sends air, so that the blast furnace continuously obtains high-temperature hot blast.

[0003] The prior art discloses a Chinese utility model patent with application number 202021862601.0, which discloses a ceramic burner and a top combustion hot blast stove, belonging to the field of burners. The gas shunt in the ceramic burner has two layers of shunts sharing one gas inlet; the air shunt has two layers of shunts sharing one air inlet; in the axial direction of the burner, the uppermost layer is a gas injection port layer, the lowermost layer is an air injection port layer, and the other layers are air-coal mixed layers in which air injection ports and gas injection ports are arranged in the same layer; in the circumferential direction of the burner, each gas injection port and each air injection port are independently and separately arranged. The ceramic burner can make the air-coal gas mixture more uniform, help to advance the ignition position, improve the capacity of the burner, and reduce the temperature difference of the burner. The ceramic burner of this type is applied to the top combustion hot blast stove, and is combined with the dense and thin combustion technology, which can reduce the content of NOx in the flue gas of the hot blast stove, and is a low-nitrogen and environmentally friendly ceramic burner and top combustion hot blast stove.

[0004] The above prior art still has the following deficiencies: the outside air enters the combustion chamber through the air introduction pipe without being filtered, and if the dust, impurities and other particulate matters in the air directly enter the combustion chamber, the combustion assembly may be damaged, the combustion efficiency may be affected, and even equipment failure may occur. UTILITY MODEL CONTENTS

[0005] To solve the problems in the above background art, the utility model provides an energy-saving efficient top combustion hot blast stove, which has the characteristics of filtering the introduced air, avoiding damage to the combustion assembly and affecting the combustion efficiency.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: an energy-saving efficient top combustion hot blast stove, comprising a furnace body, a combustion chamber, a regenerative chamber and a mixing chamber are arranged in the furnace body, a hot blast pipeline is arranged on the side wall of the combustion chamber, a flue gas pipeline and a cold air pipeline are arranged on the side wall of the regenerative chamber, a gas pipeline and an air pipeline are arranged on the side wall of the mixing chamber.

[0007] The air pipeline is connected with an air filtering mechanism, the air filtering mechanism comprises a filtering pipeline, the filtering pipeline is communicated with the air pipeline, a filtering cover is detachably connected with an air inlet end of the filtering pipeline, the filtering cover is fixedly connected with a filter cartridge extending into the filtering pipeline, a mounting frame is detachably connected with a top shell of the filter cartridge, and a negative pressure fan is fixedly connected with the mounting frame.

[0008] Preferably, the filtering cover is provided with a mounting groove matched with an outer wall of the filtering pipeline, the filtering cover sleeve is arranged on the outer wall of the air inlet end of the filtering pipeline, a middle portion of the mounting groove is provided with an air inlet groove matched with an outer wall of the filter cartridge, and the filter cartridge is fixedly connected with the air inlet groove.

[0009] Preferably, a buffer pad is further fixedly connected in the mounting groove, and the buffer pad is movably sleeved on the outer side of the filter cartridge.

[0010] Preferably, the filtering cover is mounted on the filtering pipeline through a plurality of quick release mechanisms, the quick release mechanism comprises a fixed sleeve, a pull rod and a positioning block, the fixed sleeve is fixedly connected with the outer wall of the filtering pipeline, the pull rod is movably arranged in the fixed sleeve, the pull rod is connected with the fixed sleeve through an elastic piece, one end of the pull rod is fixedly connected with a handle, the side wall of the other end of the pull rod is fixedly connected with a clamping block, the positioning block is fixedly connected with the outer wall of the filtering cover, the positioning block is provided with a first clamping groove for the pull rod to pass through, and the positioning block is further provided with a second clamping groove for the clamping block to pass through.

[0011] Preferably, the elastic piece comprises a buffer spring, the buffer spring is movably sleeved on the outer side of the pull rod, and both ends of the buffer spring are fixedly connected with connecting plates, one of the connecting plates is fixedly connected with the fixed sleeve, and the other connecting plate is fixedly connected with the pull rod.

[0012] Preferably, the preheating mechanism is arranged in the inside of the air outlet end of the filtering pipeline, the preheating mechanism comprises a fixed frame, the fixed frame is fixedly connected with the inner wall of the filtering pipeline, and an electric heating wire is fixedly connected with the fixed frame.

[0013] Preferably, the electric heating wire is arranged in a spiral structure in the inside of the filtering pipeline.

[0014] Compared with the prior art, the air filtering device has the beneficial effects that:

[0015] 1. The utility model discloses a filter pipeline, filter drum and negative pressure fan are set up, can filter the particle or dust in the air when the outside air is introduced into the air pipeline, avoid the dust, impurity etc. particle in the air directly into the combustion chamber inside, thereby also avoid can cause the damage of combustion assembly and lead to equipment failure, improved the efficiency of combustion.

[0016] 2. The utility model discloses a electric heating wire is set up, can to the air of filtering fire preheats operation, the air after preheating enters the inside of air pipeline, avoided the problem that the air temperature is low, thereby further improved the efficiency of combustion. DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, explain the utility model with the embodiments of the utility model and do not constitute the limit to the utility model. In the drawings:

[0018] Figure 1 It is the main view structural diagram of the utility model furnace body;

[0019] Figure 2 It is the main view structural diagram of the utility model air filter mechanism;

[0020] Figure 3 It is the three -dimensional structure schematic diagram of the utility model filter pipeline;

[0021] Figure 4 It is the filter pipeline cross section structural schematic diagram of the utility model;

[0022] Figure 5 It is the filter pipeline elevation structural schematic diagram of the utility model;

[0023] In the drawing: 100, furnace body;101, combustion chamber;102, heat storage room;103, mixing chamber;104, hot air pipeline;105, flue gas pipeline;106, cold air pipeline;107, coal gas pipeline;108, air pipeline;200, air filter mechanism;201, filter pipeline;202, filter cover;203, filter drum;204, installation frame;205, negative pressure fan;300, quick -detach mechanism;301, fixed sleeve;302, pull rod;303, handle;304, clamping block;305, positioning block;306, first clamping groove;307, second clamping groove;308, buffer spring;400, preheating mechanism;401, fixed frame;402, electric heating wire. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present application.

[0025] Embodiment 1

[0026] Please refer to Figure 1 The embodiment provides the following technical scheme: an energy-saving and efficient top combustion hot blast stove, comprising a furnace body 100, a combustion chamber 101, a heat storage chamber 102 and a mixing chamber 103 are arranged in the furnace body 100, a hot blast pipeline 104 is arranged on the side wall of the combustion chamber 101, a flue gas pipeline 105 and a cold blast pipeline 106 are arranged on the side wall of the heat storage chamber 102, and a coal gas pipeline 107 and an air pipeline 108 are arranged on the side wall of the mixing chamber 103.

[0027] An air filtering mechanism 200 is connected to the air inlet end of the air pipeline 108, the air filtering mechanism 200 comprises a filtering pipeline 201, the filtering pipeline 201 is in communication with the air pipeline 108, a filtering cover 202 is detachably connected to the air inlet end of the filtering pipeline 201, a filtering cylinder 203 extending into the filtering pipeline 201 is fixedly connected to the filtering cover 202, an installation frame 204 is detachably connected to the top of the filtering cylinder 203, and a negative pressure fan 205 is fixedly connected to the installation frame 204.

[0028] In some embodiments, by arranging the filtering pipeline 201, the filtering cylinder 203 and the negative pressure fan 205, the particles or dust in the air can be filtered when the air outside is introduced into the air pipeline 108, so that the particles such as dust and impurities in the air can be prevented from directly entering the combustion chamber 101, thereby avoiding damage to the combustion assembly and equipment failure, and improving the combustion efficiency.

[0029] In some embodiments, a filtering mesh layer, an air filtering cotton layer and an activated carbon adsorption layer can be sequentially arranged in the filtering cylinder 203 from bottom to top, and the air entering the filtering pipeline 201 is filtered under the cooperation of the filtering mesh layer, the air filtering cotton layer and the activated carbon adsorption layer, so that the filtering effect and efficiency of the air are improved.

[0030] The filter cover 202 is provided with a mounting groove matched with the outer wall of the filter duct 201, the filter cover 202 is sleeved on the outer wall of the air inlet end of the filter duct 201, the middle part of the mounting groove is provided with an air inlet groove matched with the outer wall of the filter cartridge 203, and the filter cartridge 203 is fixedly connected to the air inlet groove. By arranging the mounting groove and the air inlet groove, the filter cover 202 can be tightly covered on the air inlet end of the filter duct, and external air can enter the filter duct 201.

[0031] The mounting groove is also fixedly connected with a buffer pad, the buffer pad is movably sleeved on the outside of the filter cartridge 203, and the buffer pad is arranged to improve the sealing performance between the filter cover 202 and the connecting end of the filter duct 201.

[0032] Embodiment 2

[0033] Please refer to Figures 2-4 The filter cover 202 is installed on the filter duct 201 through a plurality of quick release mechanisms 300, the quick release mechanism 300 comprises a fixed sleeve 301, a pull rod 302 and a positioning block 305, the fixed sleeve 301 is fixedly connected to the outer wall of the filter duct 201, the pull rod 302 is movably arranged in the fixed sleeve 301, the pull rod 302 is connected to the fixed sleeve 301 through an elastic member, the top end of the pull rod 302 is fixedly connected with a handle 303, the side wall of the lower end of the pull rod 302 is fixedly connected with a clamping block 304, the positioning block 305 is fixedly connected to the outer wall of the filter cover 202, the positioning block 305 is provided with a first clamping groove 306 for the pull rod 302 to pass through, and the positioning block 305 is also provided with a second clamping groove 307 for the clamping block 304 to pass through. Through the cooperation of the pull rod 302, the clamping block 304, the positioning block 305, the first clamping groove 306 and the second clamping groove 307, the filter cover 202 can be quickly disassembled and assembled on the filter duct 201, so that the filter cartridge 203 can be cleaned, and the working efficiency is improved.

[0034] In some embodiments, the upper surface of the clamping block 304 and the lower surface of the positioning block 305 can be provided with anti-skid lines, so that the friction between the clamping block 304 and the positioning block 305 is improved when the upper surface of the clamping block 304 is attached to the lower surface of the positioning block 305.

[0035] The clamping block 304 is provided with a plurality of clamping blocks 304, and the plurality of clamping blocks 304 are circumferentially distributed on the side wall of the pull rod 302.

[0036] The elastic member comprises a buffer spring 308 movably sleeved outside the pull rod 302, both ends of the buffer spring 308 are fixedly connected with connecting plates, the upper connecting plate is fixedly connected to the fixed sleeve 301, and the lower connecting plate is fixedly connected to the pull rod 302; the buffer spring 308 is arranged to cooperate with the pull rod 302, when the clamping block 304 does not correspond to the second clamping groove 307, the pull rod 302 and the clamping block 304 clamp the positioning block 305, and when the clamping block 304 corresponds to the second clamping groove 307, the pull rod 302 drives the clamping block 304 to slide upwards to the upper side of the positioning block 305, so that the positioning block 305 is separated from the locking and fixing of the clamping block 304.

[0037] Embodiment 3

[0038] Please refer to Figures 2-3 The preheating mechanism 400 is arranged in the inside of the air outlet end of the filtering pipeline 201, and comprises a fixed frame 401 fixedly connected to the inner wall of the filtering pipeline 201, and an electric heating wire 402 fixedly connected to the fixed frame 401; the electric heating wire 402 is arranged to preheat the air filtered by the filtering pipeline 201, so that the air is preheated before entering the air pipeline 108, thereby avoiding the problem of low air temperature and further improving the combustion efficiency.

[0039] In some embodiments, the electric heating wire 402 is arranged in a spiral structure in the inside of the filtering pipeline 201, so that the efficiency of preheating the air is further improved.

[0040] The working principle of the utility model is as follows: when the filtering cover 202 is covered on the filtering pipeline 201, the clamping block 304 on the pull rod 302 corresponds to the second clamping groove 307 on the positioning block 305, then the pull handle 303 is pressed down, the pull rod 302 and the clamping block 304 pass through the first clamping groove 306 and the second clamping groove 307 on the positioning block 305, until the clamping block 304 is located below the positioning block 305, then the pull handle 303 is rotated, the clamping block 304 does not correspond to the second clamping groove 307, under the reset action of the elastic member, the clamping block 304 is clamped on the lower surface of the positioning block 305, thereby completing the fixation of the filtering cover 202.

[0041] Then the negative pressure fan 205 is started, the external air enters the inside of the filtering pipeline 201, the filter cartridge 203 in the filtering pipeline 201 filters the air, at the same time, the electric heating wire 402 is started to preheat the filtered air, and the preheated air enters the inside of the air pipeline 108.

[0042] On the contrary, when the filter cover 202 needs to be disassembled, the pull rod 302 is rotated, the clamping block 304 on the pull rod 302 is arranged in correspondence with the second clamping groove 307 on the positioning block 305, the pull rod 302 is slid upward under the reset action of the elastic member, the clamping block 304 passes through the second clamping groove 307 and is located above the positioning block 305, so that the positioning block 305 is unlocked from the clamping block 304, and the disassembly of the filter cover 202 is completed.

[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included within the scope of the present application.

Claims

1. An energy-saving and high-efficiency top combustion hot blast stove, comprising a stove body (100), a combustion chamber (101), a heat storage chamber (102) and a mixing chamber (103) are arranged in the stove body (100), a hot blast duct (104) is arranged on the side wall of the combustion chamber (101), a flue gas duct (105) and a cold blast duct (106) are arranged on the side wall of the heat storage chamber (102), a gas duct (107) and an air duct (108) are arranged on the side wall of the mixing chamber (103); characterized in that An air filtering mechanism (200) is connected to the air inlet end of the air duct (108), the air filtering mechanism (200) comprises a filtering duct (201) in communication with the air duct (108), a filtering cover (202) is detachably connected to the air inlet end of the filtering duct (201), a filtering cylinder (203) extending into the filtering duct (201) is fixedly connected to the filtering cover (202), and a mounting frame (204) is detachably connected to the top shell of the filtering cylinder (203), and a negative pressure fan (205) is fixedly connected to the mounting frame (204).

2. The energy efficient top combustion hot blast stove as claimed in claim 1, wherein: An installation groove matched with the outer wall of the filtering duct (201) is arranged on the filtering cover (202), the filtering cover (202) is sleeved on the outer wall of the air inlet end of the filtering duct (201), an air inlet groove matched with the outer wall of the filtering cylinder (203) is arranged in the middle of the installation groove, and the filtering cylinder (203) is fixedly connected to the air inlet groove.

3. The energy efficient top combustion hot blast stove as claimed in claim 2, wherein: A buffer pad is also fixedly connected in the installation groove, and the buffer pad is movably sleeved on the outside of the filtering cylinder (203).

4. The energy efficient top combustion hot blast stove as claimed in claim 1, wherein: The filtering cover (202) is mounted on the filtering duct (201) through a plurality of quick release mechanisms (300), the quick release mechanism (300) comprises a fixed sleeve (301), a pull rod (302) and a positioning block (305), the fixed sleeve (301) is fixedly connected to the outer wall of the filtering duct (201), the pull rod (302) is movably arranged in the fixed sleeve (301), the pull rod (302) is connected to the fixed sleeve (301) through an elastic member, one end of the pull rod (302) is fixedly connected to a handle (303), the side wall of the other end of the pull rod (302) is fixedly connected to a clamping block (304), the positioning block (305) is fixedly connected to the outer wall of the filtering cover (202), a first clamping groove (306) through which the pull rod (302) passes is arranged on the positioning block (305), and a second clamping groove (307) through which the clamping block (304) passes is also arranged on the positioning block (305).

5. An energy efficient top combustion hot blast stove as claimed in claim 4, wherein: The elastic member comprises a buffer spring (308), the buffer spring (308) is movably sleeved on the outside of the pull rod (302), and the two ends of the buffer spring (308) are respectively fixedly connected to connecting plates, one of the connecting plates is fixedly connected to the fixed sleeve (301), and the other connecting plate is fixedly connected to the pull rod (302).

6. The energy efficient top combustion hot blast stove as claimed in claim 4, wherein: A plurality of clamping blocks (304) are arranged on the side wall of the pull rod (302).

7. The energy efficient top combustion hot blast stove as claimed in claim 1, wherein: Also include preheating mechanism (400), the preheating mechanism (400) is arranged in the inside of the air outlet end of the filter pipeline (201), the preheating mechanism (400) includes a fixed frame (401), the fixed frame (401) is fixedly connected on the inner wall of the filter pipeline (201), and the fixed frame (401) is fixedly connected with an electric heating wire (402).

8. An energy efficient top combustion hot blast stove as claimed in claim 7, wherein: The electric heating wire (402) is distributed in the inside of the filter pipeline (201) in a spiral structure.

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