Heating mechanism of electrothermal blowing drying box

Abstract

The utility model discloses a heating mechanism of an electrothermal blowing dry box, which comprises a box body, the lower end of the box body is fixedly connected with a support pad, the inner side wall of the box body is fixedly connected with a screen plate, the inner wall of the bottom of the box body is fixedly connected with an air blower, the front end of the air blower is provided with two symmetrically distributed air inlet pipes, and the air inlet pipes are connected with the air blower. The air inlet pipe is fixedly connected with the box body, and the upper portion of the air inlet pipe is fixedly connected with an air inlet. Through the effect of the air blower, air in the box body can be sucked and discharged into the heating base to be heated through the electric heating wire, and the heated air can flow back into the box body through the through holes, so that materials on the surface of the screen plate can be dried, heat circulation in the box body can be achieved, heat loss is reduced, and the drying efficiency is improved. And meanwhile, through the effect of the bagged drying agent, moisture absorption can be conducted on gas, the humidity in the box body is reduced, and the drying effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying boxes, in particular to a heating mechanism of an electric heating blast drying box. Background Art

[0002] The electric blast drying oven is also known as the "drying oven". As the name implies, it uses electric heating to conduct blast cycle drying tests. The utility model patent with the patent authorization announcement number CN206019214U discloses an electric blast drying oven, including a drying box body and a material placement tray. The inner wall of the drying box body is cylindrical, and there is a vertically arranged rotating shaft at the center of the drying box body. The center of the material placement tray is fixed on the rotating shaft. There are multiple electric heating wires in the drying box body, and the electric heating wires are evenly arranged along the circumference on the inner wall. The utility model can provide more uniform heating than existing equipment, thereby providing higher drying quality and faster drying speed.

[0003] In the above prior art, when the drying box heating mechanism is used, it is necessary to continuously draw in external air to heat and then dry the material. Since the external air temperature is low, the heating efficiency is slow, which will affect the drying efficiency of the material. Therefore, improvement is needed. Utility Model Content

[0004] The utility model aims to provide a heating mechanism of an electric heating blast drying box, which solves the problem of low material drying efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heating mechanism of an electric hot air drying box, comprising a box body, a support pad fixedly connected to the lower end of the box body, a mesh plate fixedly connected to the inner wall of the box body, a blower fixedly connected to the bottom inner wall of the box body, two symmetrically distributed air inlet pipes are arranged at the front end of the blower, the air inlet pipes are fixedly connected to the box body, an air inlet is fixedly connected to the upper part of the air inlet pipe, a fixing seat is fixedly connected to the top of the box body, a circulating heating mechanism is arranged inside the box body, and an exhaust pressure relief mechanism is arranged inside the fixing seat.

[0006] Preferably, the number of the support pads is four, and the support pads are made of non-slip rubber material. By designing the support pads, the overall structure can be supported.

[0007] Preferably, the circulation heating mechanism includes an exhaust pipe, an exhaust pipe is provided at the upper end of the blower, a heating seat is fixedly connected to the upper end of the exhaust pipe, the heating seat is fixedly connected to the inner wall of the box, a heating wire is provided inside the heating seat, an air outlet is fixedly connected to the upper end of the heating seat, the air outlet is fixedly connected to the box, a fixing plate is fixedly connected inside the air outlet, a through hole is provided inside the fixing plate, a bagged desiccant is in contact with the upper end of the fixing plate, the bagged desiccant is in contact with the inner wall of the air outlet, and a guide cover is fixedly connected to the inner side wall of the box. By designing a circulation heating mechanism, heat circulation inside the box can be achieved.

[0008] Preferably, there are multiple through holes, and the multiple through holes are evenly distributed on the fixing plate. The through holes are designed so that gas can flow through the through holes.

[0009] Preferably, the exhaust pressure relief mechanism includes a fixing rod, the inside of the left side wall and the right side wall of the fixing seat are fixedly connected with the fixing rod, the outside of the fixing rod is provided with a spring, the outside of the fixing rod is slidably sleeved with a slider, the slider is slidably connected to the fixing seat, the end of the slider away from the inner side wall of the fixing seat is fixedly connected with a connecting rod, the upper end of the connecting rod is fixedly connected with a baffle, and the baffle is slidably connected to the fixing seat. By designing the exhaust pressure relief mechanism, excessive air pressure inside the box can be prevented.

[0010] Preferably, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the fixing seat. The spring is designed so that the force of the spring can act on the slider.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model is designed with a blower to suck the gas inside the box, and the gas can be discharged into the heating seat to be heated by the electric heating wire. After heating, the gas will flow back into the box through the through hole, so as to dry the material on the surface of the mesh plate, realize the heat cycle inside the box, reduce the heat loss, and improve the material drying efficiency. At the same time, through the effect of the bagged desiccant, the gas can be humidified, the humidity inside the box can be reduced, and the drying effect can be improved.

[0013] 2. The utility model can seal the fixed seat by designing the baffle. When the air pressure inside the box increases, the gas will push the baffle upward, and the baffle will move and separate from the fixed seat. At this time, the gas inside the box can be discharged through the fixed seat, thereby achieving the purpose of relieving the pressure inside the box and preventing the danger caused by excessive air pressure inside the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A front cross-sectional view of

[0016] Figure 3 For this utility model Figure 2 A three-dimensional diagram of the heating seat structure;

[0017] Figure 4 For this utility model Figure 2 Enlarged view of point A.

[0018] In the figure: 1. box body; 2. support pad; 3. mesh plate; 4. blower; 5. air inlet pipe; 6. air inlet; 7. fixed seat; 8. circulation heating mechanism; 9. exhaust pressure relief mechanism; 81. exhaust pipe; 82. heating seat; 83. air outlet; 84. fixed plate; 85. through hole; 86. bagged desiccant; 87. air guide cover; 91. fixed rod; 92. spring; 93. slider; 94. connecting rod; 95. baffle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 , Figure 2 A heating mechanism of an electric hot air drying box comprises a box body 1, a support pad 2 is fixedly connected to the lower end of the box body 1, the number of the support pads 2 is four, the support pads 2 are made of non-slip rubber material, and the overall structure can be supported by designing the support pads 2, a mesh plate 3 is fixedly connected to the inner side wall of the box body 1, a blower 4 is fixedly connected to the bottom inner wall of the box body 1, and two symmetrically distributed air inlet pipes 5 are arranged at the front end of the blower 4, the air inlet pipe 5 is fixedly connected to the box body 1, an air inlet 6 is fixedly connected to the upper part of the air inlet pipe 5, a fixed seat 7 is fixedly connected to the top of the box body 1, a circulating heating mechanism 8 is arranged inside the box body 1, and an exhaust pressure relief mechanism 9 is arranged inside the fixed seat 7.

[0021] See also Figure 1 , Figure 2 , Figure 3The circulating heating mechanism 8 includes an exhaust pipe 81, an exhaust pipe 81 is provided at the upper end of the blower 4, a heating seat 82 is fixedly connected to the upper end of the exhaust pipe 81, the heating seat 82 is fixedly connected to the inner wall of the box body 1, an electric heating wire is provided inside the heating seat 82, an air outlet 83 is fixedly connected to the upper end of the heating seat 82, the air outlet 83 is fixedly connected to the box body 1, a fixing plate 84 is fixedly connected inside the air outlet 83, a through hole 85 is opened inside the fixing plate 84, and the number of the through holes 85 is multiple, and the multiple through holes 85 are evenly distributed on the fixing plate 84. By designing the through holes 85, the gas can flow through the through holes 85, the upper end of the fixing plate 84 is in contact with a bagged desiccant 86, and the bagged desiccant 86 is in contact with the inner wall of the air outlet 83, and a guide cover 87 is fixedly connected to the inner side wall of the box body 1. By designing the circulating heating mechanism 8, the heat circulation inside the box body 1 can be realized.

[0022] See also Figure 1 , Figure 2 , Figure 4 The exhaust pressure relief mechanism 9 includes a fixing rod 91, and the left side wall and the right side wall of the fixing seat 7 are fixedly connected with the fixing rod 91. A spring 92 is arranged on the outside of the fixing rod 91, and one end of the spring 92 is fixedly connected to the slider 93, and the other end of the spring 92 is fixedly connected to the fixing seat 7. By designing the spring 92, the force of the spring 92 can act on the slider 93. The slider 93 is slidably connected to the outside of the fixing rod 91. The slider 93 is slidably connected to the fixing seat 7. The end of the slider 93 away from the inner wall of the fixing seat 7 is fixedly connected with a connecting rod 94, and the upper end of the connecting rod 94 is fixedly connected with a baffle 95, and the baffle 95 is slidably connected to the fixing seat 7. By designing the exhaust pressure relief mechanism 9, excessive air pressure inside the box 1 can be prevented.

[0023] The specific implementation process of the utility model is as follows: during use, when it is necessary to dry the material, the material is placed on the surface of the mesh plate 3, and then the blower 4 works to exhaust air through the air inlet pipe 5, and the gas inside the box 1 will be sucked and discharged into the heating seat 82 through the exhaust pipe 81. Under the action of the electric heating wire, the gas inside the heating seat 82 can be heated. After heating, the gas flows upward through the through hole 85. Under the action of the bagged desiccant 86, the gas can also be dried. After the gas flows upward, it will contact the material through the mesh plate 3, and the material can be heated and dried, which can realize the heat cycle inside the box 1, reduce the heat loss, and improve the material drying efficiency. At the same time, through the action of the bagged desiccant 86, the gas can absorb moisture, reduce the humidity inside the box 1, and improve the drying effect. When the air pressure inside the box 1 is too high, the gas will push the baffle 95 upward, and the baffle 95 drives the connecting rod 94 and the slider 93 to move upward. The slider 93 slides along the fixing rod 91, and the slider 93 squeezes the spring 92. When the baffle 95 moves upward, it will separate from the fixing seat 7. At this time, the gas inside the box 1 can be discharged through the fixing seat 7, so as to achieve the purpose of decompression inside the box 1 and prevent the danger caused by excessive air pressure inside the box 1. After the decompression is completed, the baffle 95 can be reset under the elastic action of the spring 92.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating mechanism of an electric heating blast drying oven, comprising a box body (1), characterized in that: The lower end of the box (1) is fixedly connected to a support pad (2), the inner side wall of the box (1) is fixedly connected to a mesh plate (3), the bottom inner wall of the box (1) is fixedly connected to a blower (4), the front end of the blower (4) is provided with two symmetrically distributed air inlet pipes (5), the air inlet pipes (5) are fixedly connected to the box (1), the upper part of the air inlet pipes (5) is fixedly connected to an air inlet (6), the top of the box (1) is fixedly connected to a fixing seat (7), the interior of the box (1) is provided with a circulating heating mechanism (8), and the interior of the fixing seat (7) is provided with an exhaust pressure relief mechanism (9).

2. The heating mechanism of the electric heating blast drying oven according to claim 1 is characterized in that: The number of the support pads (2) is four, and the support pads (2) are made of anti-slip rubber material.

3. The heating mechanism of the electric heating blast drying oven according to claim 1 is characterized in that: The circulating heating mechanism (8) comprises an exhaust pipe (81), the upper end of the blower (4) is provided with an exhaust pipe (81), the upper end of the exhaust pipe (81) is fixedly connected to a heating seat (82), the heating seat (82) is fixedly connected to the inner wall of the box (1), the interior of the heating seat (82) is provided with an electric heating wire, the upper end of the heating seat (82) is fixedly connected to an air outlet (83), the air outlet (83) is fixedly connected to the box (1), the interior of the air outlet (83) is fixedly connected to a fixing plate (84), the interior of the fixing plate (84) is provided with a through hole (85), the upper end of the fixing plate (84) is in contact with a bagged desiccant (86), the bagged desiccant (86) is in contact with the inner wall of the air outlet (83), and the inner side wall of the box (1) is fixedly connected to a guide cover (87).

4. The heating mechanism of the electric heating blast drying oven according to claim 3 is characterized in that: There are a plurality of through holes (85), and the plurality of through holes (85) are evenly distributed on the fixing plate (84).

5. The heating mechanism of the electric heating blast drying oven according to claim 1 is characterized in that: The exhaust pressure relief mechanism (9) comprises a fixing rod (91), the inside of the left side wall and the right side wall of the fixing seat (7) are fixedly connected with the fixing rod (91), the outside of the fixing rod (91) is provided with a spring (92), the outside of the fixing rod (91) is slidably sleeved with a slider (93), the slider (93) is slidably connected to the fixing seat (7), the end of the slider (93) away from the inner side wall of the fixing seat (7) is fixedly connected with a connecting rod (94), the upper end of the connecting rod (94) is fixedly connected with a baffle (95), and the baffle (95) is slidably connected to the fixing seat (7).

6. The heating mechanism of the electric heating blast drying oven according to claim 5, characterized in that: One end of the spring (92) is fixedly connected to the slider (93), and the other end of the spring (92) is fixedly connected to the fixing seat (7).

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