Hot blast stove and hot blast stove assembly

Abstract

The utility model relates to the technical field of hot air application devices, and particularly discloses a hot blast stove and a hot blast stove assembly. The inner barrel is arranged in the outer barrel; the side cylinder wall of the inner cylinder and the side cylinder wall of the outer cylinder are arranged at an interval to form a first cavity; a through hole area and a closed area are arranged on the inner cylinder body; a plurality of ventilation holes are formed in the through hole area; the ventilation hole is communicated with the first cavity and the interior of the inner barrel; one end of the heat source pipe extends into the inner cylinder, and the other end extends out of the outer cylinder; an air inlet is formed in the outer barrel; the air inlet is communicated with the first cavity and is aligned with the closed area. According to the scheme, the first cavity formed between the inner barrel and the outer barrel forms a temperature buffering area, the temperature of the outer wall of the outer barrel can be prevented from being too high, meanwhile, cold air entering the first cavity from the air inlet slows down and is dispersed due to blocking of a closed area, the cold air can be prevented from directly impacting a heat source, and the service life of the heat source is prolonged. And the heat exchange effect of cold air and a heat source can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of hot air application devices, and in particular to a hot air stove and a hot air stove assembly. Background Art

[0002] A hot air stove is a device that heats the cold air blown out by a blower, so the hot air stove needs to be connected to the heat source generator and the blower respectively; the blower is generally connected to the side of the hot air stove. For example, if the heat source heater is an ignition gun, one end of the hot air stove needs to be connected to the ignition gun; when in use, the ignition gun passes gas into the hot air stove to generate flames that are sprayed into the hot air stove, and the cold air blown in by the blower is heated.

[0003] However, in the existing hot blast furnace, the cold air generated by the blower is often blown directly into the hot blast furnace. On the one hand, the wind speed of the cold air from the blower is unstable, which disturbs the flame of the ignition gun and makes the heating effect poor. On the other hand, the cavity wall of the hot blast furnace is affected by the flame of the ignition gun and has a high temperature. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a hot blast furnace and a hot blast furnace assembly, which are used to solve the problems of poor heating effect and high outer wall temperature of the existing hot blast furnace.

[0005] In order to achieve the above technical objectives, the first aspect of the present application provides a hot blast furnace, comprising: an outer cylinder, an inner cylinder and a heat source pipe;

[0006] The inner cylinder is arranged in the outer cylinder;

[0007] The side wall of the inner cylinder and the side wall of the outer cylinder are spaced apart to form a first cavity;

[0008] The side wall of the inner cylinder is provided with a through hole area and a closed area;

[0009] The through hole area is provided with a plurality of ventilation holes;

[0010] The ventilation hole communicates with the first cavity and the interior of the inner cylinder;

[0011] One end of the heat source tube extends into the inner cylinder, and the other end extends out of the outer cylinder;

[0012] The outer cylinder is provided with an air inlet;

[0013] The air inlet is connected to the first cavity, and the air inlet is aligned with the closed area.

[0014] Furthermore, the plurality of ventilation holes on the through hole area are evenly spaced and distributed around the circumference.

[0015] Further, it also includes: a partition;

[0016] An end wall of the inner cylinder is spaced apart from an end wall of the outer cylinder;

[0017] The partition is sleeved on the side wall of the inner cylinder and abuts against the side wall of the outer cylinder, so that the end wall of the inner cylinder, the end wall of the outer cylinder and the partition form a second cavity.

[0018] Furthermore, a plurality of through holes are provided on the partition.

[0019] Furthermore, a plurality of air holes are arranged on the end wall of the inner cylinder that surrounds the second cavity.

[0020] Furthermore, a pressure gauge is provided on the outer cylinder;

[0021] The pressure gauge is used to measure the pressure value inside the outer cylinder.

[0022] Furthermore, a temperature sensor is provided on the outer cylinder;

[0023] The temperature sensor is used to measure the temperature value inside the outer cylinder.

[0024] Further, it also includes a sight glass tube;

[0025] One end of the sight glass tube is located outside the outer cylinder, and the other end passes through the outer cylinder and the inner cylinder.

[0026] Further, the sight glass tube includes at least two;

[0027] A sight glass tube is vertically arranged with respect to the side wall of the outer cylinder;

[0028] The other sight glass tube is arranged obliquely relative to the side wall of the outer cylinder and faces the tube opening of the heat source tube.

[0029] A second aspect of the present application provides a hot blast stove assembly, comprising: an ignition gun, a blower, and the hot blast stove described in any one of the above items;

[0030] The blower is connected to the air inlet of the hot air furnace;

[0031] The ignition gun is connected to the heat source pipe in the hot blast furnace.

[0032] It can be seen from the above technical scheme that the present application provides a hot blast furnace and a hot blast furnace assembly, wherein the hot blast furnace comprises: an outer cylinder, an inner cylinder and a heat source pipe; the inner cylinder is arranged in the outer cylinder; the side cylinder wall of the inner cylinder and the side cylinder wall of the outer cylinder are spaced apart to form a first cavity; the inner cylinder is provided with a through hole area and a closed area; the through hole area is provided with a plurality of ventilation holes; the ventilation holes connect the first cavity and the interior of the inner cylinder; one end of the heat source pipe extends into the inner cylinder, and the other end extends out of the outer cylinder; the outer cylinder is provided with an air inlet; the air inlet is connected to the first cavity, and the air inlet is aligned with the closed area.

[0033] In this solution, by setting an inner cylinder and an outer cylinder, a first cavity formed between the two forms a temperature buffer zone, which can prevent the outer wall temperature of the outer cylinder from overheating and scalding the staff. At the same time, the cold air entering the first cavity from the air inlet will be slowed down and dispersed due to the obstruction of the closed area, thereby preventing the cold air from directly impacting the heat source and improving the heat exchange effect between the cold air and the heat source, effectively solving the problem of poor heating effect and high outer wall temperature of the existing hot blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A side structural perspective view of a hot blast stove provided in an embodiment of the present application;

[0036] Figure 2 For along Figure 1 The cross-sectional view at the AA position in FIG.

[0037] Figure 3 For along Figure 2 A cross-sectional view of the overall device at the TT position;

[0038] Figure 4 A side view of an inner cylinder of a hot blast stove provided in an embodiment of the present application;

[0039] In the figure:

[0040] 10. outer cylinder; 11. air inlet; 12. pressure gauge; 13. temperature sensor; 14. flange; 101. first cavity; 102. second cavity; 121. ball valve; 122. display meter; 131. measuring tube;

[0041] 20, inner cylinder; 21, through hole area; 22, closed area; 23, ventilation hole; 24, air hole; 201, first end wall; 202, second end wall;

[0042] 30. Heat source tube;

[0043] 40. partition; 41. through hole;

[0044] 50. sight glass tube; 51. sight glass;

[0045] 60. Ignition gun. DETAILED DESCRIPTION

[0046] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0047] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0049] See also Figures 1 to 4 In a first aspect, a hot blast furnace is provided in an embodiment of the present application, including: an outer cylinder 10 , an inner cylinder 20 and a heat source pipe 30 .

[0050] The inner cylinder 20 is arranged in the outer cylinder 10. The side cylinder wall of the inner cylinder 20 and the side cylinder wall of the outer cylinder 10 are arranged to form a first cavity 101. In this embodiment, the side cylinder wall of the inner cylinder 20 refers to the wall surface of the inner cylinder 20 along the radial direction; similarly, the side cylinder wall of the outer cylinder 10 refers to the wall surface of the outer cylinder 10 along the radial direction; hereinafter, the end wall of the inner cylinder 20 refers to the wall surface of the inner cylinder 20 along the axial direction; similarly, the end wall of the outer cylinder 10 refers to the wall surface of the outer cylinder 10 along the axial direction.

[0051] One end of the heat source tube 30 extends into the inner cylinder 20, and the other end extends out of the outer cylinder 10; the heat source tube 30 is used to transport the heat source to the inner cylinder 20, for example, to pass the gas of the ignition gun into the inner cylinder 20 and ignite it to generate flames.

[0052] In this embodiment, the heat exchange process between cold air and the heat source is mainly carried out inside the inner cylinder 20, and the side cylinder wall of the inner cylinder 20 is spaced apart from the side cylinder wall of the outer cylinder 10, so that the first cavity 101 can serve as a heat transition zone, thereby reducing the temperature of the side cylinder wall of the outer cylinder 10.

[0053] The inner cylinder 20 is provided with a through hole area 21 and a closed area 22. The closed area 22 refers to an area that cannot be ventilated. The through hole area 21 is provided with a plurality of ventilation holes 23; the ventilation holes 23 are connected to the first cavity 101 and the interior of the inner cylinder 20; the outer cylinder 10 is provided with an air inlet 11; the air inlet 11 is connected to the first cavity 101, and the air inlet 11 is aligned with the closed area 22.

[0054] In this embodiment, the air inlet 11 can be connected to a blower or other air blowing equipment; after starting the blower, cold air enters the first cavity 101 through the air inlet 11, and because the air inlet 11 is aligned with the closed area 22, the cold air blown in from the air inlet 11 cannot directly enter the interior of the inner cylinder 20 to interfere with the heat source, but after being blocked by the closed area 22, it is dispersed into the first cavity 101 and then enters the inner cylinder 20 through the ventilation hole 23.

[0055] Through the cooperation of the through-hole area 21, the closed area 22 and the first cavity 101, the cold air blown into the first cavity 101 from the air inlet 11 can be more evenly dispersed before entering the inner cylinder 20, reducing the disturbance caused by the uneven wind speed of the cold air and helping the cold air to enter the inner cylinder 20 at a uniform speed for heat exchange, thereby achieving the purpose of improving the convective heat exchange effect. At the same time, since the cold air will diffuse into the first cavity 101, the temperature of the first cavity 101 is in a stable temperature range and will not be transferred to the outer cylinder 10 due to the high temperature inside the inner cylinder 20, which can play a heat insulation role while improving the heat utilization rate and reducing the heat wasted due to diffusion.

[0056] It should be noted that, in this embodiment, the ventilation holes 23 on the through hole area 21 may be distributed around the circumference at uniform intervals.

[0057] In one embodiment, it also includes: a partition 40; an end wall of the inner cylinder 20 is spaced apart from an end wall of the outer cylinder 10; the partition 40 is sleeved on the side wall of the inner cylinder 20 and abuts against the side wall of the outer cylinder 10, so that the end wall of the inner cylinder 20, the end wall of the outer cylinder 10 and the partition 40 surround a second cavity 102.

[0058] Specifically, the inner cylinder 20 includes two end walls along the axial direction, namely Figure 1 The first end wall 201 on the right side and Figure 1 In practical applications, the outer peripheries of the first end wall 201 and the second end wall 202 can be sleeved with a partition plate 40, so that the axial and radial outer peripheries of the inner cylinder 20 are spaced from the outer cylinder 10.

[0059] In this embodiment, the second end wall 202 can be arranged to fit the outer cylinder 10, and can be connected to a wall or the ground after being closed by the flange 14. By providing the partition 40, the first end wall 201 can be spaced apart from the outer cylinder 10, thereby preventing the end wall temperature of the outer cylinder 10 close to the second cavity 102 from being too high.

[0060] In a further improved embodiment, Figure 3 As shown, a plurality of through holes 41 are provided on the partition plate 40 , and the through holes 41 communicate with the first cavity 101 and the second cavity 102 .

[0061] By providing the through hole 41 , the cold air blown in from the air inlet 11 can enter the second cavity 102 to play a role of temperature isolation.

[0062] Furthermore, a plurality of air holes 24 are provided on the end wall of the inner cylinder 20 that encloses the second cavity 102. The air holes 24 connect the second cavity 102 and the interior of the inner cylinder 20, so that the cold air entering the second cavity 102 can directly pass through the air holes 24 into the inner cylinder 20 for heat exchange.

[0063] Specifically, in this embodiment, after the blower is started, the cold air entering the first cavity 101 through the air inlet 11 will enter the inner cylinder 10 evenly and continuously through the air holes 24 and the ventilation holes 23 for heat exchange, while preventing the end wall and the side wall of the outer cylinder 10 from being too hot.

[0064] In one embodiment, see Figure 2 A pressure gauge 12 is provided on the outer cylinder 10 ; the pressure gauge 12 is used to measure the pressure value inside the outer cylinder 10 .

[0065] The pressure gauge 12 may be provided with a ball valve 121 and a display gauge 122 to facilitate checking and adjustment by the staff.

[0066] Furthermore, a temperature sensor 13 is provided on the outer cylinder 10 ; the temperature sensor 13 is used to measure the temperature value inside the outer cylinder 10 . The temperature sensor 13 can extend into the first cavity 101 through a measuring tube 231 .

[0067] In another embodiment, a sight glass tube 50 is further included; one end of the sight glass tube 50 is located outside the outer cylinder 10 , and the other end thereof passes through the outer cylinder 10 and the inner cylinder 20 .

[0068] The sight glass tube 50 is provided with a sight glass 51 for allowing the staff to observe the internal conditions of the inner cylinder 20 .

[0069] Furthermore, the sight glass tubes 50 include at least two; one sight glass tube 50 is vertically arranged with respect to the side wall of the outer cylinder 10, so that the situation of the inner area of ​​the inner cylinder 10 can be directly observed. The other sight glass tube 50 is inclined relative to the side wall of the outer cylinder 10 and faces the pipe opening of the heat source pipe 30, so that the heat source output of the heat source pipe 30 can be observed.

[0070] The second aspect of the present application provides a hot blast furnace assembly, comprising: an ignition gun 60, a blower and any of the above hot blast furnaces; the blower is connected to the air inlet 11 in the hot blast furnace; the ignition gun 60 is connected to the heat source pipe 30 in the hot blast furnace.

[0071] The ignition gun 60 can pass the gas into the heat source tube 30 and ignite it, so that the heat source tube 30 sprays flames as a heat source into the inner cylinder 20. The blower can blow cold air into the hot blast furnace through the air inlet 11.

[0072] The hot blast furnace assembly provided in this embodiment can achieve uniform blowing of cold air into the inner cylinder 20 of the hot blast furnace, and the high wind speed and flow stability result in a good heat exchange effect, and the temperature of the inner cylinder 20 will not be transferred to the outer cylinder 10, thereby improving the safety of the operation.

[0073] The above are only preferred embodiments of the present application and are not intended to limit the present utility model. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A hot blast stove, characterized in that: include: An outer cylinder (10), an inner cylinder (20) and a heat source pipe (30); The inner cylinder (20) is arranged inside the outer cylinder (10); The side wall of the inner cylinder (20) and the side wall of the outer cylinder (10) are spaced apart to form a first cavity (101); The side wall of the inner cylinder (20) is provided with a through hole area (21) and a closed area (22); The through hole area (21) is provided with a plurality of ventilation holes (23); The ventilation hole (23) communicates with the first cavity (101) and the interior of the inner cylinder (20); One end of the heat source tube (30) extends into the inner cylinder (20), and the other end extends out of the outer cylinder (10); The outer cylinder (10) is provided with an air inlet (11); The air inlet (11) is connected to the first cavity (101), and the air inlet (11) is aligned with the closed area (22).

2. The hot blast stove according to claim 1, characterized in that: The plurality of ventilation holes (23) on the through hole area (21) are evenly spaced and distributed around the circumference.

3. The hot blast stove according to claim 2, characterized in that: Also included: a partition (40); An end wall of the inner cylinder (20) is spaced apart from an end wall of the outer cylinder (10); The partition plate (40) is sleeved on the side wall of the inner cylinder (20) and abuts against the side wall of the outer cylinder (10), so that the end wall of the inner cylinder (20), the end wall of the outer cylinder (10) and the partition plate (40) form a second cavity (102).

4. The hot blast stove according to claim 3, characterized in that: The partition plate (40) is provided with a plurality of through holes (41); The through hole (41) communicates with the first cavity (101) and the second cavity (102).

5. The hot blast stove according to claim 4, characterized in that: A plurality of air holes (24) are provided on the end wall of the inner cylinder (20) that surrounds the second cavity (102).

6. The hot blast stove according to claim 1, characterized in that: The outer cylinder (10) is provided with a pressure gauge (12); The pressure gauge (12) is used to measure the pressure value inside the outer cylinder (10).

7. The hot blast stove according to claim 1, characterized in that: The outer cylinder (10) is provided with a temperature sensor (13); The temperature sensor (13) is used to measure the temperature value inside the outer cylinder (10).

8. The hot blast stove according to claim 1, characterized in that: Also included is a sight glass tube (50); One end of the sight glass tube (50) is located outside the outer cylinder (10), and the other end passes through the outer cylinder (10) and the inner cylinder (20).

9. The hot blast stove according to claim 8, characterized in that: The sight glass tube (50) comprises at least two; A sight glass tube (50) is arranged perpendicularly to the side wall of the outer cylinder (10); The other sight glass tube (50) is arranged obliquely relative to the side wall of the outer cylinder (10) and faces the tube opening of the heat source tube (30).

10. A hot air stove assembly, characterized in that: include: An ignition gun (60), a blower and a hot air stove as claimed in any one of claims 1 to 9; The blower is connected to the air inlet (11) in the hot air furnace; The ignition gun (60) is connected to the heat source pipe (30) in the hot air furnace.

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