Electric heating air blowing drying box with good sealing performance

Abstract

The utility model relates to an electrothermal blowing drying box with good sealing performance, which comprises a material box, a controller arranged on the material box, a drying cavity positioned in the material box and a box door for opening and closing the drying cavity, a storage rack, an electric heater and a blowing mechanism are arranged in the drying cavity, and a sealing groove is arranged at the edge of an opening of the drying cavity. A groove is formed in the inner wall of the sealing groove and is parallel to a groove opening of the sealing groove, the box door is provided with a sealing rubber ring matched with the sealing groove, the box door is further provided with an inflation and deflation pump, a fixing strip matched with the clamping groove is arranged on the outer side of the sealing rubber ring, and the inflation and deflation pump is communicated with the sealing rubber ring for inflation and deflation. The sealing rubber ring is pushed into the sealing groove when the box door is closed, then the inflation cavity is inflated, the sealing rubber ring is attached to the interior of the sealing groove, the drying cavity is closed, direct contact with hot air is reduced, the service life of the sealing rubber ring is prolonged, the groove is clamped by the fixing strip, the sealing rubber ring is not prone to falling out of the sealing groove, and the material drying effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drying ovens, and particularly to an electrothermal forced-air drying oven with good sealing performance. Background Art

[0002] An electrothermal forced-air drying oven, also known as an oven, uses an electric heating method for forced-air circulation drying tests, which are divided into two types: forced-air drying and vacuum drying. Forced-air drying is to blow hot air through a circulation fan to ensure temperature balance inside the oven. When drying items with an existing electrothermal forced-air drying oven, due to the pressure change caused by the forced air inside the oven, the sealing rubber ring at the edge of the oven door is prone to air leakage, resulting in a decrease in the temperature inside the oven and affecting the drying effect of the material. Moreover, the sealing rubber ring is baked by hot air during long-term use, which easily accelerates aging and further causes the inside of the oven to not be completely sealed. Therefore, designing an electrothermal forced-air drying oven with good sealing performance that can match the forced-air pressure and maintain the lifespan of the rubber strip has become a technical problem that urgently needs to be solved. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides an electrothermal forced-air drying oven with good sealing performance.

[0004] The technical solution of the present utility model is an electrothermal forced-air drying oven with good sealing performance, which includes a material box, a controller installed on one side of the material box, a drying chamber located inside the material box, and an oven door for opening and closing the drying chamber. A storage rack, an electric heater, and a forced-air mechanism are provided inside the drying chamber. A sealing groove is provided at the opening edge of the drying chamber, and a groove is provided on the inner wall of the sealing groove, which is parallel to the notch of the sealing groove. The oven door is provided with a sealing rubber ring that matches the position of the sealing groove, and the oven door is also provided with an air charging and discharging pump. An air charging cavity is provided inside the sealing rubber ring, and a fixing strip that matches the card slot is provided on the outside. The air charging and discharging pump is provided with an air delivery pipe communicating with the air charging cavity. The controller is electrically connected to the electric heater, the forced-air mechanism, and the air charging and discharging pump.

[0005] After adopting the above structure, the drying chamber is exposed by opening the box door, the material is placed on the storage rack in the drying chamber, the box door is closed and the controller is operated, and the electric heater and the blowing mechanism are powered on to dry the material; when the box door is closed, the sealing rubber ring moves with the box door and is pushed into the sealing groove of the matching position, and the controller turns on the charging and discharging air pump to inflate the inflation chamber of the sealing rubber ring, so that the sealing rubber ring bulges and fits tightly with the inner wall of the sealing groove; at the same time, the fixing strip on the outer side of the sealing rubber ring is inserted into the matching groove, and the groove is parallel to the notch of the sealing groove, so that the sealing rubber ring stuck by the fixing strip is not easy to slide toward the notch of the sealing groove; when the box door of the material box is closed, the sealing rubber ring is pushed into the sealing groove, and then the inflation chamber is inflated, so that the sealing rubber ring bulges and fits in the sealing groove, the drying chamber is closed and direct contact with hot air is reduced, the service life of the sealing rubber ring is increased, and the fixing strip is stuck in the groove so that the sealing rubber ring is not easy to fall out of the sealing groove, matching the pressure change in the drying chamber caused by the blast, and the effect of drying the material is improved.

[0006] As a further improvement of the utility model, the box door is provided with a support plate extending into the inflation cavity, the support plate extends along the center line of the inflation cavity, and the support plate props up the sealing rubber ring to match the depth of the sealing groove.

[0007] After adopting the above structure, a support plate extending into the inflation cavity is arranged through the box door, and the support plate stretches the sealing rubber ring to match the depth of the sealing groove, and supports the uninflated sealing rubber ring when the sealing rubber ring is pushed into the sealing groove; the support plate extends along the center line of the inflation cavity, so that the support plate separates the inflation cavity and forms a movable interval on both sides of itself, so as to prevent the support plate from hitting the sealing groove and causing damage when the box door is opened and closed.

[0008] As a further improvement of the utility model, the support plate is provided with reinforcing ribs, and the reinforcing ribs are connected to the box door to form a triangular structure.

[0009] After adopting the above structure, the box door is connected through the reinforcing ribs on the support plate to form a triangular structure, which improves the structural strength of the support plate and makes the support plate less likely to be broken by force.

[0010] As a further improvement of the utility model, the box door is provided with an observation window and an opening and closing handle, and the observation window is provided with heat-insulating glass.

[0011] After adopting the above structure, an observation window and an opening and closing handle are arranged on the box door, and the drying condition of the material in the drying chamber can be judged through the observation window. When there is air leakage in the box door, the operator can push and pull the box door to close it and adjust the inflation degree of the sealing rubber ring in time.

[0012] As a further improvement of the utility model, a temperature sensor is provided in the drying chamber, the temperature sensor signal is connected to a controller, and the controller is provided with an alarm.

[0013] After adopting the above structure, the temperature in the drying chamber is detected by a temperature sensor, and a signal can be sent to the controller when the temperature is abnormal. The alarm of the controller will issue an alarm to remind the operator to check for abnormal problems. Description of the Drawings

[0014] Figure 1 The structural schematic diagram of the present utility model is shown.

[0015] Figure 2 The sectional structural schematic diagram of the sealing rubber ring is shown.

[0016] Figure 3 The structural schematic diagram of the sealing groove of part A is shown.

[0017] 1 - material box, 2 - controller, 3 - box door, 4 - sealing groove, 5 - groove, 6 - sealing rubber ring, 7 - inflation cavity, 8 - fixing strip, 9 - support plate, 10 - reinforcing rib, 11 - observation window, 12 - opening and closing handle. Detailed Embodiment

[0018] As Figures 1-3 Shown is an electrothermal blast drying oven with good sealing performance, including a material box 1, a controller 2 installed on one side of the material box 1, a drying chamber inside the material box 1, and a box door 3 for opening and closing the drying chamber. The drying chamber is provided with a storage rack, an electric heater and a blowing mechanism. The opening edge of the drying chamber is provided with a sealing groove 4, and the inner wall of the sealing groove 4 is provided with a groove 5, which is parallel to the notch of the sealing groove 4. The box door 3 is provided with a sealing rubber ring 6 that matches the position of the sealing groove 4. The box door 3 is also provided with an air charging and discharging pump. The inside of the sealing rubber ring 6 is provided with an inflation cavity 7, and the outside is provided with a fixing strip 8 that matches the card slot. The air charging and discharging pump is provided with an air delivery pipe communicating with the inflation cavity 7. The controller 2 is electrically connected to the electric heater, the blowing mechanism and the air charging and discharging pump.

[0019] The drying chamber is exposed by opening the box door 3, and the materials are placed on the shelf in the drying chamber. The box door 3 is closed and the controller 2 is operated to start the electric heater and the blowing mechanism to dry the materials. When the box door 3 is closed, the sealing rubber ring moves with the box door 3 and is pushed into the sealing groove 4 with a matching position. The controller 2 turns on the charging and discharging air pump to inflate the charging chamber 7 of the sealing rubber ring, so that the sealing rubber ring swells and fits tightly with the inner wall of the sealing groove 4. At the same time, the fixing strip 8 on the outer side of the sealing rubber ring 6 is inserted into the matching groove 5, and the sealing rubber ring is pressed into the inner wall of the sealing groove 4 by the groove. The groove 5 is parallel to the notch of the sealing groove 4, so that the sealing rubber ring clamped by the fixing strip 8 is not easy to slide toward the notch of the sealing groove 4; when the box door 3 of the material box 1 is closed, the sealing rubber ring is pushed into the sealing groove 4, and then the inflation chamber 7 is inflated to make the sealing rubber ring bulge and fit in the sealing groove 4, thereby sealing the drying chamber and reducing direct contact with hot air, thereby increasing the service life of the sealing rubber ring; the fixing strip 8 clamps the groove 5 to make the sealing rubber ring not easy to fall out of the sealing groove 4, thereby matching the pressure change in the drying chamber caused by air blasting and improving the effect of drying materials.

[0020] The box door 3 is provided with a support plate 9 extending into the inflation cavity 7 . The support plate 9 extends along the center line of the inflation cavity 7 . The support plate 9 props up the sealing rubber ring to a depth matching that of the sealing groove 4 .

[0021] A support plate 9 extending into the inflation chamber 7 is arranged through the box door 3, and the support plate 9 stretches the sealing rubber ring to match the depth of the sealing groove 4. When the sealing rubber ring is pushed into the sealing groove 4, the uninflated sealing rubber ring is supported; the support plate 9 is extended along the center line of the inflation chamber 7, so that the support plate 9 separates the inflation chamber 7 and forms a movable interval on both sides of itself, so as to prevent the support plate 9 from hitting the sealing groove 4 and causing damage when the box door 3 is opened and closed.

[0022] The support plate 9 is provided with reinforcing ribs 10 , and the reinforcing ribs 10 are connected to the box door 3 to form a triangular structure.

[0023] The box door 3 is connected by the reinforcing ribs 10 on the support plate 9 to form a triangular structure, which improves the structural strength of the support plate 9 and makes the support plate 9 less likely to be broken by force.

[0024] The door 3 is provided with an observation window 11 and an opening and closing handle 12 , and the observation window 11 is provided with heat-insulating glass.

[0025] The observation window 11 and the opening and closing handle 12 are arranged on the box door 3, and the drying condition of the material in the drying chamber can be judged through the observation window 11. When the box door 3 leaks, the operator can push and pull the box door 3 to close it and adjust the inflation degree of the sealing rubber ring 6 in time.

[0026] A temperature sensor is provided in the drying chamber, and a signal of the temperature sensor is connected to a controller 2 , and the controller 2 is provided with an alarm.

[0027] The temperature inside the drying chamber is detected by a temperature sensor. When the temperature is abnormal, a signal is sent to the controller 2, and an alarm is issued by the alarm of the controller 2 to remind the operator to check for abnormal problems.

Claims

1. An electrothermal forced-air drying oven with good sealing performance, comprising a material box (1), a controller (2) installed on one side of the material box (1), a drying chamber located inside the material box (1), and a box door (3) for opening and closing the drying chamber. A storage rack, an electric heater and a blowing mechanism are arranged in the drying chamber, and it is characterized in that: The opening edge of the drying chamber is provided with a sealing groove (4), the inner wall of the sealing groove (4) is provided with a groove (5), and the groove (5) is parallel to the notch of the sealing groove (4); the box door (3) is provided with a sealing rubber ring (6) matching the position of the sealing groove (4); the box door (3) is also provided with an air charging and discharging pump; the sealing rubber ring (6) is provided with an air charging cavity (7) inside, and a fixing strip (8) matching the card slot is provided on the outside; the air charging and discharging pump is provided with an air delivery pipe connected to the air charging cavity (7); and the controller (2) is electrically connected to the electric heater, the air blowing mechanism and the air charging and discharging pump.

2. The electric blast drying oven with good sealing performance according to claim 1, wherein: The box door (3) is provided with a support plate (9) extending into the inflation cavity (7). The support plate (9) extends along the center line of the inflation cavity (7). The support plate (9) props up the sealing rubber ring (6) to a depth matching that of the sealing groove (4).

3. The electric blast drying oven with good sealing performance according to claim 2, characterized in that: The support plate (9) is provided with reinforcing ribs (10), and the reinforcing ribs (10) are connected to the box door (3) to form a triangular structure.

4. The electric blast drying oven with good sealing performance according to claim 1, characterized in that: The box door (3) is provided with an observation window (11) and an opening and closing handle (12); the observation window (11) is provided with heat-insulating glass.

5. The electrothermal blast drying oven with good sealing performance according to claim 1, characterized in that: A temperature sensor is provided in the drying chamber, and a signal of the temperature sensor is connected to a controller (2), and the controller (2) is provided with an alarm.

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