CN216385019U

CN216385019U - Direct combustion type hot blast stove

Info

Publication number: CN216385019U
Application number: CN202122504143.4U
Authority: CN
Inventors: 隆正东; 唐志刚; 程英麒; 刘军; 何建; 杨柳; 蒲建国
Original assignee: Nanchong Yida Agricultural Machinery Co ltd
Current assignee: Nanchong Yida Agricultural Machinery Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-26
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a direct-fired hot blast stove, which comprises a stove body, a mixing chamber and a Venturi pipeline, wherein the inlet end of the Venturi pipeline is communicated with the outlet of the stove body, the outlet end of the Venturi pipeline is communicated with the inlet of the mixing chamber, a heat insulation sleeve is sleeved on the outer wall of the stove body, the surface wall of the heat insulation sleeve is of a hollow structure, an air inlet and an air outlet which are communicated with the inside of the surface wall of the heat insulation sleeve are arranged on the heat insulation sleeve, the air outlet is communicated with the inlet end of the Venturi pipeline, and the part of the heat insulation sleeve, which is in contact with the stove body, is made of heat insulation materials.

Description

Direct combustion type hot blast stove

Technical Field

The utility model relates to the field of hot blast stoves, in particular to a direct-combustion hot blast stove.

Background

The direct combustion hot blast stove is a heat power machine, adopts fuel to directly burn, forms hot air through high purification treatment, generates the hot air for heating, drying or baking and other purposes, needs a good heat preservation effect on the stove body of the hot blast stove in order to reduce heat loss, and generally has the surface temperature which is not higher than the ambient air temperature by 50 ℃. The higher the surface temperature of the furnace body is, the poorer the heat insulation performance is, and the larger the heat dissipation capacity is, and the traditional furnace body heat insulation method is that a heat insulation cover is arranged on the outer wall of the furnace body, and the heat insulation effect of the heat insulation cover is limited, so that a good heat insulation effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks of the prior art, the object of the present invention is to: provides a direct-fired hot blast stove with good heat preservation effect.

In order to realize the purpose of the utility model, the utility model provides the following technical scheme:

the utility model provides a direct combustion formula hot-blast furnace, includes furnace body, mixing chamber, still includes venturi way, venturi way say the entry end with the export intercommunication of furnace body, its exit end with the entry intercommunication of mixing chamber, the outer wall cover of furnace body is equipped with the radiation shield, the table wall of radiation shield is hollow structure, be provided with air intake, air outlet rather than the inside intercommunication of table wall on the radiation shield, the air outlet with venturi way's entry end intercommunication, the radiation shield with the part of furnace body contact adopts insulation material to make.

Furthermore, a flow blocking cover is arranged in the mixing chamber, the flow blocking cover is of a concave structure, and the opening of the flow blocking cover faces to the inlet of the mixing chamber.

Further, the mixing chamber has a convergent configuration from the inlet to the outlet thereof.

Further, the mixing chamber still includes the switch part that is used for its export of switch, the switch part includes choke plug, moving part, the choke plug pass through the slide rail with mixing chamber sliding connection, the export from interior to exterior of mixing chamber is frustum column structure, the choke plug be with the frustum column structure of the export adaptation of mixing chamber, the choke plug is followed the export axial lead of mixing chamber removes, the moving part with the choke plug is connected, is used for removing the choke plug.

Further, the moving part comprises a screw rod which is rotatably connected with the mixing chamber and is in threaded connection with the plugging head.

Further, a filter screen is arranged at an air inlet of the heat insulation sleeve.

Furthermore, the filter screen is a cylindrical structure with one open end and one sealed end, and the inner wall of the air inlet of the heat insulation sleeve is connected through threads.

Further, the part of the heat insulation sleeve, which is in contact with the furnace body, is made of aluminum foil heat insulation coiled materials.

Compared with the prior art, the utility model has the following beneficial effects:

venturi says can produce the adsorption affinity at its entry end, makes steam in the furnace body can fully discharge, and can with the external cold air of furnace inhales in the hybrid chamber, cool down high temperature steam, make it reach the temperature of needs, have again, the hollow structure of radiation shield cover is when the cold air is through wherein, cools down it through the cold air, and then the surface temperature of furnace body reduces, has increased the heat preservation effect of furnace body, has again, venturi says to have increased certainly the follow-up hot-blast velocity of flow of hybrid chamber exhaust needn't set up the draught fan and can arrange it to the appointed place.

Drawings

FIG. 1 is a block diagram of a direct fired stove of the present invention;

fig. 2 is an enlarged view of fig. 1 at a.

List of reference numerals

1-furnace body, 2-heat insulation sleeve, 3-filter screen, 4-air inlet, 5-air outlet, 6-inlet end, 7-outlet end, 8-venturi pipeline, 9-mixing chamber, 10-flow blocking cover, 11-plugging head, 12-screw rod and 13-slide rail.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, integrally connected, or detachably connected; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meaning of the above terms in the present invention in specific situations.

As shown in fig. 1-2, a direct combustion type hot blast stove comprises a stove body 1, a mixing chamber 9 and a Venturi pipeline 8, wherein an inlet end 6 of the Venturi pipeline 8 is communicated with an outlet of the stove body 1, an outlet end 7 of the Venturi pipeline is communicated with an inlet of the mixing chamber 9, an outer wall sleeve of the stove body 1 is provided with a heat insulation sleeve 2, a surface wall of the heat insulation sleeve 2 is of a hollow structure, an air inlet 4 and an air outlet 5 which are communicated with the inside of the surface wall of the heat insulation sleeve 2 are arranged on the heat insulation sleeve 2, the air outlet 5 is communicated with the inlet end 6 of the Venturi pipeline 8, and the heat insulation sleeve 2 is made of a heat insulation material in a contact part of the stove body 1.

The working principle of the utility model is as follows: furnace body 1 produces high temperature steam certainly 6 entering of entry end of venturi pipeline 8 wherein, are in as steam 8's narrowest department, the hot gas flow rate rises because of through-flow cross sectional area reduces, is in simultaneously 6 production adsorption affinity of entry end of venturi pipeline 8 make 1 outer cold air via air intake 4 gets into in the radiation shield 2, follow at last air outlet 5 gets into venturi pipeline 8 is in after preliminary mixing in the venturi pipeline 8, get into in the mixing chamber 9, with high temperature steam cooling to required temperature. Meanwhile, the heat insulation material of the heat insulation sleeve 2 firstly plays a role in heat insulation of the furnace body 1, and when cold air passes through the interior of the heat insulation sleeve 2, the temperature of the heat insulation sleeve 2 can be reduced, so that the surface temperature of the furnace body 1 is reduced, heat loss is reduced, and the heat insulation effect of the furnace body 1 is improved.

Further, a flow blocking cover 10 is arranged in the mixing chamber 9, and the flow blocking cover 10 is of a concave structure, and the opening of the flow blocking cover is directed to the inlet of the mixing chamber 9.

After the accelerated hot air enters the mixing chamber 9, part of the hot air moves in the reverse direction under the action of the flow blocking cover 10, and convection is generated between the hot air and the hot air at the inlet of the mixing chamber 9, so that the hot air and the cold air are mixed more uniformly.

Further, the mixing chamber 9 has a convergent structure from its inlet to its outlet.

The convergent structure of the mixing chamber 9 enables the hot air to be further accelerated when moving towards the outlet of the mixing chamber 9 in the mixing chamber 9, so that the convection hot air flow rate is increased, the mixing effect is increased, and the hot air flow rate discharged from the outlet of the mixing chamber 9 is increased, thereby facilitating the discharge of the hot air.

Further, mixing chamber 9 still includes the switch part that is used for its export of switch, the switch part includes choke plug 11, moving part, choke plug 11 pass through slide rail 13 with mixing chamber 9 sliding connection, mixing chamber 9's export is frustum column structure from inside to outside, choke plug 11 be with the frustum column structure of mixing chamber 9's export adaptation, choke plug 11 is along mixing chamber 9's export axial lead removes, moving part with choke plug 11 connects, is used for removing choke plug 11.

The conical surface of the plugging head 11 is matched with the conical surface of the outlet of the mixing chamber 9, when the plugging head 11 moves in the outlet of the mixing chamber 9, the outlet of the mixing chamber 9 can be effectively sealed, and the moving part moves the plugging head 11, the opening degree of the outlet of the mixing chamber 9 can be controlled through reasonably setting the moving distance of the plugging head 11, so that the air displacement is conveniently controlled.

Further, the moving means comprises a screw 12, the screw 12 being rotatably connected to the mixing chamber 9 and being screwed to the plugging head 11.

Rotatory lead screw 12 under the drive of lead screw 12, jam head 11 is followed slide rail 13 removes, realizes the drive the purpose that jam head 11 removed, has again, jam head 11, lead screw 12 screw-thread fit's structure make it have self-locking nature, works as when lead screw 12 stops to rotate, jam head 11 can remain static, makes the exit state of mixing chamber 9 is inconvenient, has increased the reliability of this device.

Further, a filter screen 3 is arranged at an air inlet 4 of the heat insulation sleeve 2.

Filter screen 3 can block outside impurity outside, prevents firstly that impurity from getting into in the mixing chamber 9, and then follow mixing chamber 9 discharges, causes the pollution to needs keep clear processing environment, secondly prevents 2 inside a large amount of impurity of piling up of radiation shield, lead to the unable smooth and easy removal of cold air wherein, reduce the heat preservation effect of furnace body 1.

Furthermore, the filter screen 3 is a cylindrical structure with one open end and one sealed end, and the inner wall of the air inlet 4 of the heat insulation sleeve 2 is connected through threads.

Traditional filter screen 3 is planar, and the cylinder filter screen 3 in this device compares to the plane structure and the contact surface of air is bigger, has reduced the effect of blockking of filter screen 3 to admitting air.

Further, the part of the heat insulation sleeve 2 contacting the furnace body 1 is made of aluminum foil heat insulation coiled materials.

When the aluminium foil thermal-insulated coiled material has good heat-proof quality, the material is soft, change with the outer wall of furnace body 1 fully laminates, simultaneously, still has good water-proof effects, can avoid furnace body 1 is corroded by outside steam.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments in the above-described embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition. In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. The utility model provides a direct-fired hot-blast furnace, includes furnace body (1), mixing chamber (9), its characterized in that: still include venturi pipeline (8), entry end (6) of venturi pipeline (8) with the export intercommunication of furnace body (1), its exit end (7) with the entry intercommunication of mixing chamber (9), the outer wall cover of furnace body (1) is equipped with radiation shield sleeve (2), the table wall of radiation shield sleeve (2) is hollow structure, be provided with air intake (4), air outlet (5) rather than the inside intercommunication of table wall on radiation shield sleeve (2), air outlet (5) with entry end (6) the intercommunication of venturi pipeline (8), radiation shield sleeve (2) with the part of furnace body (1) contact adopts insulation material to make.

2. A direct combustion stove according to claim 1, characterised in that: a flow blocking cover (10) is arranged in the mixing chamber (9), the flow blocking cover (10) is of a concave structure, and the opening of the flow blocking cover faces to the inlet of the mixing chamber (9).

3. A direct combustion stove according to claim 1, characterised in that: the mixing chamber (9) is in a convergent structure from the inlet to the outlet thereof.

4. A direct combustion stove according to claim 1, characterised in that: mixing chamber (9) is still including the switch part that is used for its export of switch, the switch part is including choke plug (11), moving part, choke plug (11) through slide rail (13) with mixing chamber (9) sliding connection, the export from interior to exterior of mixing chamber (9) is frustum column structure, choke plug (11) be with the frustum column structure of the export adaptation of mixing chamber (9), choke plug (11) are followed the export axial lead of mixing chamber (9) removes, moving part with choke plug (11) are connected, are used for removing choke plug (11).

5. A direct combustion stove according to claim 4, characterised in that: the moving part comprises a screw rod (12), and the screw rod (12) is rotatably connected with the mixing chamber (9) and is in threaded connection with the plugging head (11).

6. A direct combustion stove according to claim 1, characterised in that: and a filter screen (3) is arranged at the air inlet (4) of the heat insulation sleeve (2).

7. A direct combustion stove according to claim 6, characterised in that: the filter screen (3) is a tubular structure with one open end and one sealed end, and the inner wall of the air inlet (4) of the heat insulation sleeve (2) is connected through threads.

8. A direct combustion stove according to claim 1, characterised in that: the part of the heat insulation sleeve (2) contacted with the furnace body (1) is made of aluminum foil heat insulation coiled materials.