Coating machine oven capable of relieving pressure safely

Abstract

The utility model discloses a coating machine oven capable of relieving pressure safely, which comprises an oven body and a top cover covering the upper end of the oven body, an electric pressure gauge extending into an inner cavity of the oven body is arranged on the upper portion of the top cover, and the top cover is fixedly connected with a pressure relief component communicated with the inner cavity of the oven body. The pressure relief component comprises a pressure relief column which is fixed to the upper portion of the top cover and internally provided with a pressure relief cavity and a valve port, the upper end of the pressure relief column is connected with an exhaust column containing a gravity ball valve, the gravity ball valve comprises a valve body matched with the valve port and a gravity column located at the upper end of the valve body, and the valve body slides and ascends in the exhaust column to open or close the valve port. Under the action of pressure and gravity, the pressure relief component can close or open the valve port, pressure relief in the coating machine drying oven is completed, risks caused by too large pressure in the drying oven body are avoided, the auxiliary component can drive the shifting fork to jack up or press down the gravity ball valve, and normal work of the coating machine drying oven is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of coating machine oven technology, and in particular to a coating machine oven that can be safely depressurized. Background Technology

[0002] A coating machine oven is a device used to cure and dry coatings applied to a substrate. To ensure the oven's airtightness, it is sealed in all directions except for the inlet and outlet air ducts. During operation, a large amount of hot air circulates to heat and dry the substrate. During the drying process, heated gas is continuously blown into the oven through the exhaust fan and inlet duct, while excess gas is continuously extracted from the oven through the circulating fan and outlet duct. This cycle of blowing in heated gas and exhausting exhaust heats and dries the substrate inside the oven. To ensure drying efficiency, under normal circumstances, the air intake volume of the oven is always less than the exhaust volume, maintaining a negative pressure state inside the coating machine oven.

[0003] However, because the coating machine oven requires a large amount of air supply and exhaust, an imbalance in the air volume distribution between the exhaust fan and the circulating fan can lead to excessive pressure inside the oven, posing a certain risk to the drying process. Moreover, the humidity of the substrate coating and the temperature of the hot air inside the oven are not constant, causing changes in the gas-liquid pressure during drying inside the coating machine oven. This can result in greater pressure inside the oven, causing it to exceed normal values, potentially leading to oven expansion and cracking, or even fire and explosion. Utility Model Content

[0004] To address the technical problems of excessive internal pressure in the drying oven of existing coating machines, which pose certain risks during the drying process and may lead to expansion and cracking of the drying oven, or even fire and explosion, this utility model provides the following technical solution.

[0005] This utility model discloses a coating machine oven with safe pressure relief, comprising an oven body and a top cover covering the upper part of the oven body. The top cover is provided with a pressure gauge extending into the inner cavity of the oven body. The top cover is fixedly connected to a pressure relief component communicating with the inner cavity of the oven body. The pressure relief component includes a pressure relief column fixed to the upper part of the top cover, which has a pressure relief chamber and a valve port inside. The upper end of the pressure relief column is connected to an exhaust column that accommodates a gravity ball valve. The gravity ball valve includes a valve body that matches the valve port and a gravity column located at the upper end of the valve body. The valve body slides and rises and falls within the exhaust column to open or close the valve port.

[0006] As a further technical solution, the lower radial outer periphery of the exhaust column is provided with several exhaust ports near the valve port.

[0007] As a further technical solution, the outer wall of the gravity column is provided with several guide strips, and the inner wall of the exhaust column is provided with several grooves that match the guide strips.

[0008] As a further technical solution, an auxiliary component is fixedly provided on one side of the pressure relief component. The auxiliary component includes a fixed frame fixed on the upper part of the top cover and a lifting rod installed on the lower part of the fixed frame. The output end of the lifting rod passes upward through the fixed frame and is connected to a fixed plate. A toggle fork is fixedly provided at one end of the fixed plate facing the gravity column.

[0009] As a further technical solution, an auxiliary rod is fixedly provided at the upper end of the gravity column, and a lifting ring and an anti-detachment ring are respectively provided at the upper and lower ends of the auxiliary rod.

[0010] As a further technical solution, the actuating fork is located between the lifting ring and the anti-detachment ring, and the actuating fork does not contact the auxiliary rod.

[0011] The beneficial effects of this utility model are as follows: The upper end of the oven body of this utility model is equipped with a pressure relief component, which includes a pressure relief column, an exhaust column, and a gravity ball valve. The gravity ball valve, with a certain weight, can be selected according to the critical pressure standard within the oven body. Under the action of the internal pressure of the oven body and the gravity of the ball valve, the valve body can close or open the valve port, completing the pressure relief of the coating machine oven cavity. When the oven body is in a slightly positive pressure state, the valve body closes the valve port under the gravity of the ball valve. When the pressure gauge detects that the internal pressure of the oven body exceeds the critical standard, the pressure within the oven body pushes the gravity ball valve up, releasing pressure outwards from the valve port, ensuring that the pressure inside the oven body is at a normal state, avoiding the risks caused by excessive internal pressure, and ensuring the normal operation of the coating machine oven. An auxiliary component is provided on one side of the pressure relief component. When the solvent in the oven body causes the valve port and valve body to stick together, the auxiliary component can drive the actuating fork to lift or press down the gravity ball valve, which can normally relieve the pressure in the oven body and ensure the normal operation of the coating machine oven. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the coating machine drying oven with safe pressure relief according to this utility model;

[0013] Figure 2 This is a schematic diagram of the auxiliary components of the coating machine oven that can safely depressurize according to this utility model;

[0014] Figure 3 This is an exploded view of the pressure relief component of the coating machine oven that can safely release pressure according to this utility model;

[0015] Figure 4 This is a cross-sectional structural diagram of the pressure relief component of the coating machine oven that can safely relieve pressure according to this utility model;

[0016] In the diagram: 1-Oven body; 2-Top cover; 3-Electric pressure gauge; 4-Pressure relief component; 5-Auxiliary component; 501-Fixing frame; 502-Lifting rod; 503-Fixing plate; 504-Actuating fork; 6-Pressure relief column; 601-Pressure relief chamber; 602-Valve port; 7-Exhaust column; 701-Exhaust port; 702-Slide groove; 8-Gravity ball valve; 801-Gravity column; 802-Guide bar; 803-Valve body; 804-Auxiliary rod; 805-Anti-detachment ring; 806-Lifting ring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] like Figure 1 As shown, this utility model discloses a coating machine oven with safe pressure relief, comprising an oven body 1 and a top cover 2 that fits onto the upper end of the oven body 1. The oven body 1 adopts the existing coating machine oven structure, so its internal structure will not be described in detail. The top cover 2 has a through hole that communicates with the inner cavity of the oven body 1, and is used to cooperate with the pressure relief component to relieve pressure on the oven body 1.

[0020] like Figure 2 , Figure 3 and Figure 4 As shown, in a preferred embodiment, the top cover 2 is provided with a pressure gauge 3 extending into the inner cavity of the oven body 1. The pressure gauge 3 is used to monitor the pressure inside the oven body 1 in real time. A pressure relief component 4 is fixedly connected to the top cover 2. The pressure relief component 4 communicates with the through hole of the top cover 2 and with the inner cavity of the oven body 1, and is used to relieve pressure inside the oven body 1.

[0021] Specifically, the pressure relief component 4 includes a pressure relief column 6 fixed to the upper part of the top cover 2. The pressure relief column 6 is a hollow cylindrical structure, and its interior has a pressure relief chamber 601 that communicates with the oven body 1. A valve port 602 is provided at the upper end of the pressure relief chamber 601. An exhaust column 7 is connected to the upper end of the pressure relief column 6. The exhaust column 7 is also a hollow structure, and a gravity ball valve 8 is housed within it. The gravity ball valve 8 can move up and down along the axis of the exhaust column 7. The gravity ball valve 8 includes a valve body 803 that matches the valve port 602 and a gravity column 801 located at the upper end of the valve body 803. The valve body 803 can slide and rise and fall within the exhaust column 7 to open or close the valve port 602. When in use, a gravity ball valve 8 with a certain weight can be selected according to the critical standard of the pressure inside the oven body 1. Under the gravity of the gravity column 801, the valve body 803 seals the valve port 602. When the pressure inside the oven body 1 is too high, the air pressure inside the oven body 1 will push the valve body 803 up, and the valve port 602 will separate from the valve body 803, so that the pressure of the oven body 1 can be relieved.

[0022] In a preferred embodiment, the outer wall of the gravity column 801 is provided with several guide strips 802, and the inner wall of the exhaust column 7 is provided with several sliding grooves 702 that match the guide strips 802. Thus, when the gravity column 801 moves up and down, the valve body 803 can move up and down in a stable axial and horizontal plane. After the valve body 803 is lifted, air pressure can be discharged upwards from the inner cavity of the exhaust column 7. Of course, the lower radial outer periphery of the exhaust column 7 is provided with several exhaust ports 701 near the valve port 602, which further facilitates the exhaust from the valve port 602.

[0023] In a preferred embodiment, an auxiliary component 5 is fixedly provided on one side of the pressure relief component 4. The auxiliary component 5 is fixed to the upper part of the top cover 2 and is electrically connected to the voltage pressure gauge 3. The auxiliary component 5 includes a fixed frame 501 fixed to the upper part of the top cover 2 and a lifting rod 502 installed at the lower part of the fixed frame 501. The lifting rod 502 can be an electric push rod. The output end of the lifting rod 502 passes upward through the fixed frame 501 and is connected to a fixed plate 503. The fixed plate 503 is driven to rise or fall by the lifting rod 502. A toggle fork 504 is fixedly provided at one end of the fixed plate 503 facing the gravity column 801. The toggle fork 504 has a semi-ring structure as shown in the figure. At this time, an auxiliary rod 804 is fixedly provided at the upper end of the gravity column 801. The upper end and lower end of the auxiliary rod 804 are respectively provided with a lifting ring 806 and an anti-detachment ring 805. The toggle fork 504 is located between the lifting ring 806 and the anti-detachment ring 805, and the toggle fork 504 does not contact the auxiliary rod 804.

[0024] Under normal circumstances, the gravity ball valve 8 and the pressure inside the oven body 1 only need to drive the valve body 803 to close or open the valve port 602, without manual intervention or additional power. When the oven body 1 is depressurized from the valve port 602 repeatedly over a long period, a small amount of solvent inside the oven body 1 may be blown out to the valve port 602, and the valve body 803 may stick to it. If the valve port 602 and the valve body 803 stick together, the overall depressurization effect of the gravity ball valve 8 decreases, potentially resulting in excessive pressure inside the oven body 1 without the valve body 803 being lifted. In this case, the pressure gauge 3 detects excessive pressure, and the lifting rod 502 pushes the actuating fork 504, which lifts the lifting ring 806, thereby lifting the valve body 803 and completing the depressurization of the oven body 1. After the pressure gauge 3 detects that the pressure has returned to normal, the lifting rod 502 returns to its original position, the valve body 803 descends normally, and the valve port 602 is closed.

[0025] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A coater oven with safe pressure relief, comprising an oven body (1) and a top cover (2) covering the upper end of the oven body (1), characterized in that: The upper portion of the top cover (2) is provided with a voltage pressure gauge (3) extending into the inner cavity of the oven body (1), the top cover (2) is fixedly connected with a pressure relief component (4) communicating with the inner cavity of the oven body (1), the pressure relief component (4) includes a pressure relief column (6) fixed on the upper portion of the top cover (2) and provided with a pressure relief cavity (601) and a valve port (602) in the inside, the upper end of the pressure relief column (6) is connected with an exhaust column (7) containing a gravity ball valve (8), the gravity ball valve (8) includes a valve body (803) matched with the valve port (602) and a gravity column (801) located on the upper end of the valve body (803), the valve body (803) slides up and down in the exhaust column (7) to open or close the valve port (602).

2. The pressure vessel safe relief coated applicator oven of claim 1, wherein: The lower portion of the exhaust column (7) is provided with a plurality of exhaust ports (701) close to the valve port (602) on the outer periphery.

3. The pressure vessel safe relief coated web oven of claim 1, wherein: The outer wall of the gravity column (801) is provided with a plurality of guide strips (802), and the inner wall of the exhaust column (7) is provided with a plurality of sliding grooves (702) matched with the guide strips (802).

4. The pressure safe venting coater oven of claim 1, wherein: One side of the pressure relief component (4) is fixedly provided with an auxiliary component (5), the auxiliary component (5) includes a fixing frame (501) fixed on the upper portion of the top cover (2) and a lifting rod (502) installed on the lower portion of the fixing frame (501), the output end of the lifting rod (502) is upwardly connected with a fixed plate (503) through the fixing frame (501), one end of the fixed plate (503) towards the gravity column (801) is fixedly provided with a poking fork (504).

5. The pressure vessel safe relief coated web oven of claim 4, wherein: The upper end of the gravity column (801) is fixedly provided with an auxiliary rod (804), the upper end and the lower end of the auxiliary rod (804) are respectively provided with a jacking ring (806) and an anti-falling ring (805).

6. The pressure vessel safe relief coated web oven of claim 5, wherein: The poking fork (504) is located between the jacking ring (806) and the anti-falling ring (805), and the poking fork (504) does not contact the auxiliary rod (804).

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