Furnace body structure of pit furnace

Abstract

The utility model relates to the technical field of heat treatment, and discloses a furnace body structure of a pit furnace, which comprises a furnace body and a fan, a muffle tank, a heat insulation layer, a furnace door and a heating unit are arranged on the furnace body, an air inlet is arranged at the bottom of the furnace body, an air outlet is arranged at the top of the furnace body, an air inlet pipe is arranged at the air inlet, and a valve body is arranged on the air inlet pipe. The other end of the valve body is connected with the fan output end; the air outlet is also provided with a valve body; and the adjusting mechanism enables the air inlet pipe to rotate on the valve body, namely, the end, located in the furnace body, of the air inlet pipe is changed from pointing to the muffle tank to backing to the muffle tank. The adjusting mechanism is arranged to drive the L-shaped air inlet pipe to rotate so as to switch the working state, heat preservation layer chippings at the bottom of the furnace body can be cleaned, it can be ensured that a large number of heat preservation layer chippings cannot be accumulated at the bottom of the furnace body, manual cleaning of workers is not needed, the whole cleaning process is efficient and high in cleanliness, and the maintenance difficulty of the furnace body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat treatment technical field, specifically, it is a furnace body structure of shaft furnace. BACKGROUND

[0002] Shaft furnace is a common metallurgical furnace type, widely used in the smelting and processing of cast iron, steel and other metals. Its technical background comes from the industrial revolution period, with the continuous development of metallurgical technology, the production process demand gradually increases, the traditional smelting method cannot meet the demand of high efficiency, energy saving. In order to improve the furnace temperature, accelerate the smelting speed and realize the efficient energy utilization, shaft furnace emerges as the times require.

[0003] Muffle pot is a kind of high-temperature furnace, mainly used for sintering, annealing, atmosphere heat treatment and other processes of materials. It is usually made of high-temperature resistant ceramic material, which can provide stable heating process in high-temperature environment. The main feature of muffle pot is good sealing performance, which can control the atmosphere in the furnace and avoid the interference of external gas on the heating process.

[0004] The two are often mixed, the muffle pot is put into the shaft furnace, and the shaft furnace is used to heat the muffle pot to realize the heat treatment of the workpiece in the muffle pot. When cooling is needed, the air flow is sucked into the furnace body between the muffle pot and the muffle pot and flows out for heat exchange. Because it is necessary to prevent heat from escaping in the furnace body, the furnace body will be filled with a heat insulation layer. However, after long-term use, due to the continuous change of temperature and the blowing effect of air flow, the insulation layer will have debris falling on the bottom of the furnace body, which needs to be cleaned by workers. However, the manual cleaning process is complicated and inefficient. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of furnace body structure of shaft furnace, solve the problem such as complicated step, inefficient when artificial manual heat insulation layer debris cleaning.

[0006] The utility model realizes by the following technical scheme: a kind of furnace body structure of shaft furnace, including furnace body, cooling fan, the furnace body is installed with muffle pot, heat preservation layer, furnace cover, heating unit, the furnace body bottom is provided with air inlet, top is installed with air outlet, the cooling fan is inhaled air from the air inlet into furnace body and then is discharged from the air outlet, the air inlet is installed with inlet pipe, the inlet pipe is "L" shape, the inlet pipe is installed with valve body, the valve body other end is connected with the cooling fan output end;The air outlet is also installed with valve body;It further includes adjusting mechanism, the adjusting mechanism makes the inlet pipe rotate on the valve body, i.e. it can make the inlet pipe in one end of the furnace body from pointing to the muffle pot change into back to the muffle pot.

[0007] To better realize this utility model, the adjusting mechanism further includes an adjusting cylinder, a rack is installed at the output end of the adjusting cylinder, a gear is installed on the air inlet pipe, and the rack meshes with the gear.

[0008] To better realize this utility model, the valve body further includes a valve shell, a cylinder bracket, and an adjustment knob. The cylinder bracket is mounted on the valve shell, and the adjustment knob is used to adjust the flow rate of the valve body. A valve cylinder is hinged on the cylinder bracket, and the valve cylinder is hinged to the adjustment knob.

[0009] To better realize this utility model, a dispersion baffle is further installed on the furnace body. The dispersion baffle is in the shape of an inverted cone and is used to disperse the air blown out from the air inlet pipe.

[0010] To better realize this utility model, a reinforcing frame is further fitted onto the furnace body, a base is installed on the reinforcing frame, and multiple mounting holes are provided on the reinforcing frame.

[0011] To better realize this utility model, a protective ladder is further installed on the reinforcing frame.

[0012] To better realize this utility model, the number of air outlets is at least two.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] (1) This utility model drives the L-shaped air inlet pipe to rotate by setting an adjustment mechanism to switch working states, which can clean the insulation layer debris at the bottom of the furnace body, ensuring that a large amount of insulation layer debris will not accumulate at the bottom of the furnace body, eliminating the need for manual cleaning by staff, and the entire cleaning process is efficient and clean, reducing the difficulty of furnace body maintenance.

[0015] (2) This utility model uses valve cylinders to replace manual adjustment, reducing the frequency of personnel climbing and reducing potential risks; and the adjustment using valve cylinders is more accurate and convenient.

[0016] (3) This utility model disperses the air blown out from the air inlet pipe by setting a dispersion baffle, which prevents the air inlet pipe from continuously blowing air to the same position at the bottom of the muffle tank, causing the local position of the muffle tank to cool down too quickly, thereby improving the uniformity of heat dissipation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0019] Figure 3 for Figure 2 Enlarged view of the local structure at point A in the middle.

[0020] Figure 4 This is a schematic diagram of the adjustment mechanism.

[0021] Figure 5 This is a schematic diagram of the valve body structure.

[0022] Wherein: 101-furnace body; 102-reinforcing frame; 103-protective ladder; 104-valve body; 105-furnace cover; 106-base; 107-cooling fan; 108-mounting hole; 109-muffle can; 110-insulation layer; 111-valve cylinder; 112-dispersion baffle; 113-air inlet pipe; 114-heating unit; 115-adjusting cylinder; 116-rack; 117-gear; 118-adjusting knob; 119-cylinder bracket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] This embodiment provides a furnace body structure for a pit-type furnace, specifically as follows: Figures 1-4As shown, the furnace includes a furnace body 101 and a cooling fan 107. The furnace body 101 is equipped with a muffle tank 109, an insulation layer 110, a furnace cover 105, and a heating unit 114. The insulation layer 110 is a rigid fiber module. The furnace cover 105 is used to seal the muffle tank 109. The furnace body 101 has an air inlet at the bottom and an air outlet at the top. The cooling fan 107 pumps air into the furnace body 101 from the air inlet and then discharges it from the air outlet. The furnace is characterized by: an air inlet pipe 113 installed at the air inlet, the air inlet pipe 113 being L-shaped, and a valve body 104 installed on the air inlet pipe 113, the other end of which is connected to the output end of the cooling fan 107; a valve body 104 is also installed at the air outlet.

[0027] It also includes an adjustment mechanism that allows the air inlet pipe 113 to rotate on the valve body 104, that is, it allows one end of the air inlet pipe 113 in the furnace body 101 to change from pointing towards the muffle tank 109 to facing away from the muffle tank 109.

[0028] During operation, the workpiece is placed in the muffle tank 109, and then the muffle tank 109 is sealed with the furnace lid 105, and all valves 104 are in a closed state. At this time, the heating unit 114 starts heating, and the heat is transferred to the workpiece inside the muffle tank 109. At the same time, the insulation layer 110 can insulate the heat and prevent heat loss. After the workpiece is heat-treated, all valves 104 are opened and the cooling fan 107 is started. At this time, the cooling fan 107 draws outside air into the furnace body 101 through the air inlet pipe 113. The air inlet pipe 113 blows the air upward and then discharges it from the air outlet. Heat exchange occurs through the air flow, thereby cooling the furnace body and the muffle tank 109. After repeated use, due to the influence of airflow and temperature, the insulation layer 110 will have debris falling to the bottom of the furnace body 101. At this time, the air inlet pipe 113 is rotated by the adjustment mechanism so that one end of the air inlet pipe 113 inside the furnace body 101 is facing down. At this time, the cooling fan 107 is reversed so that the air inlet pipe 113 is facing down and the debris accumulated at the bottom of the furnace body 101 is discharged.

[0029] This setting ensures that a large amount of insulation layer 110 debris will not accumulate at the bottom of the furnace body 101, and no manual cleaning is required from staff. The entire cleaning process is efficient and highly clean, reducing the difficulty of furnace maintenance.

[0030] Example 2:

[0031] This embodiment further defines the adjustment mechanism based on the above embodiments, specifically as follows: Figure 4 As shown, the adjustment mechanism includes an adjustment cylinder 115, a rack 116 is installed at the output end of the adjustment cylinder 115, and a gear 117 is installed on the air intake pipe 113, with the rack 116 meshing with the gear 117.

[0032] By adjusting the cylinder 115 to push the rack 116, the rack 116 drives the gear 117 to rotate, so that the air inlet pipe 113 rotates synchronously. The maximum rotation angle of the air inlet pipe 113 is 180°, that is, one end of the air inlet pipe 113 in the furnace body 101 can only blow air upward or suck air downward.

[0033] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0034] Example 3:

[0035] This embodiment further expands the valve body 104 based on the above embodiment, specifically as follows: Figure 5 As shown, the valve body 104 includes a valve shell, a cylinder bracket 119, and an adjustment knob 118. The cylinder bracket 119 is mounted on the valve shell, and the adjustment knob 118 is used to adjust the flow rate of the valve body 104. A valve cylinder 111 is hinged to the cylinder bracket 119, and the valve cylinder 111 is hinged to the adjustment knob 118.

[0036] By activating the valve cylinder 111, the adjustment knob 118 is rotated by the extension and retraction of the valve cylinder 111, thereby adjusting the flow rate of the valve body 104. The valve cylinder 111 replaces manual adjustment, reducing the frequency of personnel climbing and lowering potential risks. Moreover, the adjustment using the valve cylinder 111 is more precise and convenient.

[0037] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0038] Example 4:

[0039] This embodiment further extends the above embodiment, specifically as follows: Figure 3 As shown, a dispersion baffle 112 is installed on the furnace body 101. The dispersion baffle 112 is in the shape of an inverted cone and is used to disperse the air blown out from the air inlet pipe 113.

[0040] By setting up a dispersion baffle 112 to disperse the air blown out from the air inlet pipe 113, the air inlet pipe 113 is prevented from continuously blowing air onto the same position at the bottom of the muffle tank 109, which would cause the local area of ​​the muffle tank 109 to cool down too quickly, thereby improving the uniformity of heat dissipation.

[0041] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0042] Example 5:

[0043] This embodiment further extends the above embodiment, specifically as follows: Figure 1As shown, a reinforcing frame 102 is sleeved on the furnace body 101, a base 106 is installed on the reinforcing frame 102, and multiple mounting holes 108 are opened on the reinforcing frame 102.

[0044] The base 106 supports the reinforcing frame 102, which reinforces the furnace body 101 and improves the overall strength of the furnace body. At the same time, the mounting holes 108 facilitate the subsequent installation of other auxiliary tools on the reinforcing frame 102, improving the ease of installation.

[0045] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0046] Example 6:

[0047] This embodiment further extends the above embodiment, specifically as follows: Figure 1 As shown, a protective ladder 103 is installed on the reinforcing frame 102.

[0048] By installing the protective ladder 103, the staff can be protected during the climbing process, preventing them from falling.

[0049] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0050] Example 7:

[0051] This embodiment further extends the above embodiment, wherein the number of air outlets is at least two. The number of air inlets is usually one, but in order to ensure that the air pumped into the furnace body 101 can be completely discharged and to ensure the air pressure balance of the furnace body 101, the number of air outlets is usually more than the number of air inlets.

[0052] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

Claims

1. A furnace body structure for a pit-type furnace, comprising a furnace body (101) and a cooling fan (107), wherein a muffle tank (109), an insulation layer (110), a furnace cover (105), and a heating unit (114) are installed on the furnace body (101), an air inlet is provided at the bottom of the furnace body (101), and an air outlet is installed at the top, wherein the cooling fan (107) draws air into the furnace body (101) from the air inlet and then discharges it from the air outlet, characterized in that: An air inlet pipe (113) is installed at the air inlet. The air inlet pipe (113) is L-shaped. A valve body (104) is installed on the air inlet pipe (113). The other end of the valve body (104) is connected to the output end of the cooling fan (107). A valve body (104) is also installed at the air outlet. It also includes an adjustment mechanism that allows the air inlet pipe (113) to rotate on the valve body (104), that is, it allows one end of the air inlet pipe (113) in the furnace body (101) to change from pointing towards the muffle can (109) to facing away from the muffle can (109).

2. The furnace body structure of a pit-type furnace according to claim 1, characterized in that: The adjustment mechanism includes an adjustment cylinder (115), a rack (116) is installed at the output end of the adjustment cylinder (115), and a gear (117) is installed on the air intake pipe (113), with the rack (116) meshing with the gear (117).

3. The furnace body structure of a pit-type furnace according to claim 1, characterized in that: The valve body (104) includes a valve housing, a cylinder bracket (119), and an adjustment knob (118). The cylinder bracket (119) is mounted on the valve housing, and the adjustment knob (118) is used to adjust the flow rate of the valve body (104). A valve cylinder (111) is hinged on the cylinder bracket (119), and the valve cylinder (111) is hinged to the adjustment knob (118).

4. The furnace body structure of a pit furnace according to claim 1, characterized in that: A dispersion baffle (112) is installed on the furnace body (101). The dispersion baffle (112) is in the shape of an inverted cone and is used to disperse the air blown out from the air inlet pipe (113).

5. The furnace body structure of a pit-type furnace according to claim 1, characterized in that: A reinforcing frame (102) is fitted onto the furnace body (101), and a base (106) is installed on the reinforcing frame (102). Multiple mounting holes (108) are provided on the reinforcing frame (102).

6. The furnace body structure of a pit furnace according to claim 5, characterized in that: A protective ladder (103) is installed on the reinforcing frame (102).

7. The furnace body structure of a pit-type furnace according to claim 1, characterized in that: The number of air outlets is at least two.

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