Explosion-proof opening mechanism for drying oven and drying oven comprising explosion-proof opening mechanism

Abstract

The utility model discloses an explosion-proof opening mechanism for a drying oven and the drying oven comprising the explosion-proof opening mechanism, and relates to the technical field of industrial manufacturing equipment. The anti-explosion opening mechanism for the drying oven comprises an anti-explosion layer, an aluminum foil and a heat preservation layer. The explosion-proof layer comprises a first explosion-proof layer and a second explosion-proof layer, and the first explosion-proof layer and the second explosion-proof layer are arranged in a spaced mode in the first direction to form a containing space; the aluminum foil comprises a first aluminum foil attached to the first explosion-proof layer and a second aluminum foil attached to the second explosion-proof layer, and the first aluminum foil is located in the containing space and is configured in the mode that when the pressure value borne by the first aluminum foil is larger than a set pressure value, the first aluminum foil can crack; the heat preservation layer is located between the first aluminum foil and the second anti-explosion layer in the first direction. By adopting the technology provided by the utility model, the temperature difference inside and outside the explosion-proof opening can be effectively reduced, so that the phenomenon that the quality of a dry film is influenced by a water condensation phenomenon is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial manufacturing equipment technical field, concretely relates to a kind of explosion-proof mouth mechanism for oven and the oven comprising it. BACKGROUND

[0002] Dry film oven is a kind of equipment specially used for drying and curing photosensitive dry film, which realizes the uniformity of high-temperature gas in the oven chamber mainly through electric heating and fan forced convection or motor horizontal circulation air supply. Among them, the positive and negative pressure difference usually exists between the high-temperature circulating gas in the oven chamber and the external atmospheric environment, and the main oven body is usually made of angle steel and thin steel plate, and the pressure-bearing capacity of the oven is limited.

[0003] Therefore, the current general practice is to add a circulating fan to connect the inlet and return air ducts of the oven body to realize the gas circulation in the oven chamber, and to set an explosion-proof door for pressure relief protection. However, the pressure relief principle of the explosion-proof door is that when the positive pressure in the oven exceeds the self-weight of the explosion-proof door, the explosion-proof door will be popped open to achieve pressure relief. However, this pressure relief method has the following problems: first, the explosion-proof door relies on self-weight sealing, and the sealing degree is low; second, due to the large temperature difference between the inside and outside of the oven chamber, the explosion-proof door is prone to condensation, which affects the drying effect of the dry film. In summary, this pressure relief method has low applicability to dry film ovens. SUMMARY

[0004] The utility model provides a kind of explosion-proof mouth mechanism for oven to solve the problem of low applicability of the pressure relief method relying on self-weight in prior art to dry film oven.

[0005] To solve the above technical problems, the utility model adopts the technical scheme to provide an explosion-proof mouth mechanism for oven, which comprises: an explosion-proof layer, an aluminum foil and a thermal insulation layer.

[0006] The explosion-proof layer comprises a first explosion-proof layer and a second explosion-proof layer, wherein the first explosion-proof layer and the second explosion-proof layer are spaced apart along a first direction to form a containing space; the aluminum foil comprises a first aluminum foil attached to the first explosion-proof layer and a second aluminum foil attached to the second explosion-proof layer, wherein the first aluminum foil is located in the containing space and is configured to rupture when the bearing pressure value of the first aluminum foil is greater than a set pressure value; the thermal insulation layer is located between the first aluminum foil and the second explosion-proof layer along the first direction.

[0007] The technical scheme provided by the utility model has the beneficial effects compared with the prior art:

[0008] The sealing performance of the oven is ensured by configuring a multi-layer structure of the first aluminum foil, the second aluminum foil, the first explosion-proof layer, and the second explosion-proof layer, and the accessories are placed in a containing space formed by the first explosion-proof layer and the second explosion-proof layer, including setting a heat preservation layer to maintain the temperature inside the oven, reduce the temperature difference between the inside and outside of the explosion-proof port, and avoid the occurrence of water condensation phenomenon to affect the quality of the dry film.

[0009] The first aluminum foil is configured to be able to burst when the bearing pressure value of the first aluminum foil is greater than the set pressure value, specifically, when the positive pressure in the oven is greater than the bearing limit of the first aluminum foil, the first aluminum foil will burst, thereby achieving the pressure relief condition and releasing the gas inside the oven. Compared with the current pressure relief method relying on self-weight, the above-mentioned pressure relief through the first aluminum foil and the second aluminum foil effectively improves the sealing performance of the explosion-proof port. In addition, aluminum foils of different thicknesses can withstand different pressures, that is, in some application scenarios, different specifications of aluminum foils can be reasonably selected to adapt to ovens with different limit pressure values.

[0010] In some embodiments, the heat preservation layer is filled with aluminum silicate or rock wool heat preservation material.

[0011] Using the above technical solution, the thermal conductivity of aluminum silicate and rock wool is relatively low (about 0.035~0.04 W / (m·K)), and using it as a heat preservation material for the heat preservation layer can effectively prevent heat transfer between the inside and outside of the oven. Filling the heat preservation layer with heat preservation material can fill the small gaps in the heat preservation layer to improve the heat preservation and sealing effect of the explosion-proof port mechanism.

[0012] In some embodiments, the first explosion-proof layer includes a first steel wire mesh for abutting the first aluminum foil, wherein the first aluminum foil is located between the heat preservation layer and the first steel wire mesh.

[0013] In some embodiments, the second explosion-proof layer includes a second steel wire mesh for abutting the second aluminum foil, wherein the second aluminum foil is located on the side of the second steel wire mesh away from the heat preservation layer along the first direction.

[0014] Using the above technical solution, since the heat preservation material has a certain weight, in order to avoid affecting the service life of the aluminum foil due to the heat preservation material, a second steel wire mesh is additionally provided to assist in supporting the heat preservation material to distribute the bearing pressure of the second aluminum foil and improve the structural stability of the second aluminum foil. The second steel wire mesh can also cooperate with the first steel wire mesh to press the heat preservation material and improve the heat preservation effect of the heat preservation layer.

[0015] In some embodiments, the first explosion-proof layer further includes a flange, wherein the first explosion-proof layer and the second explosion-proof layer are mutually buckled along the first direction to clamp the heat preservation layer.

[0016] In some embodiments, the second explosion-proof layer comprises a flange frame, wherein the first explosion-proof layer and the second explosion-proof layer are buckled to each other along the first direction to clamp the heat preservation layer.

[0017] By using the above technical solution, the flange and the flange frame are used in cooperation to enhance the fixing effect of the explosion-proof opening mechanism, ensure the close fit between the layers of materials, and improve the structural stability and sealing performance of the overall explosion-proof opening mechanism.

[0018] In some embodiments, the second explosion-proof layer further comprises a sealing strip, which is circumferentially arranged on the circumferential side of the flange frame, and the second aluminum foil is located between the sealing strip and the second steel wire mesh. By using the above technical solution, the sealing strip is used to further improve the sealing effect and prevent the gas or heat in the oven from leaking out of the gap of the flange frame.

[0019] In some embodiments, the accommodating space further comprises a heat preservation tube located in the heat preservation layer, wherein the heat preservation tube is further provided with a first tube opening and a second tube opening extending to the outside of the first explosion-proof layer along the heat preservation layer.

[0020] By using the above technical solution, since the materials in the dry film oven need to be in a dry environment, the constant temperature inside the oven is ensured by adding the heat preservation tube. Specifically, the first tube opening and the second tube opening are used as the inlet and outlet of the constant temperature medium, and the constant temperature medium is conveyed in the heat preservation tube to further reduce the probability of water condensation.

[0021] In some embodiments, the present application further provides an oven comprising an oven body and the above-mentioned explosion-proof opening mechanism, wherein the oven body is in communication with the explosion-proof opening mechanism. By using the above-mentioned explosion-proof opening mechanism, the sealing effect inside the oven can be better ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is an explosion diagram of an embodiment of the explosion-proof opening mechanism provided by the present application;

[0024] Figure 2 is a connection structure schematic diagram of an embodiment of the explosion-proof opening mechanism provided by the present application;

[0025] Figure 3This is a three-dimensional structural diagram of an embodiment of an explosion-proof port mechanism provided by this utility model. Figure 1 ;

[0026] Figure 4 This is a three-dimensional structural diagram of an embodiment of an explosion-proof port mechanism provided by this utility model. Figure 2 ;

[0027] Figure 5 This is a cross-sectional view of an embodiment of an explosion-proof port mechanism provided by this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of an embodiment of the heat-insulating pipe of an explosion-proof port mechanism provided by this utility model.

[0029] In the picture:

[0030] 10. Explosion-proof layer; 11. First explosion-proof layer; 110. First wire mesh; 111. Flange; 12. Second explosion-proof layer; 120. Second wire mesh; 121. Flange frame; 122. Sealing strip; 13. Accommodation space; 20. Aluminum foil; 21. First aluminum foil; 22. Second aluminum foil; 30. Insulation layer; 40. Insulation pipe; 41. First pipe opening; 42. Second pipe opening. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0032] For ease of subsequent description, this application will first combine [the following descriptions] before describing the specific structure of the explosion-proof port mechanism. Figure 1 Define a first direction (Z). The first direction is the thickness direction of the explosion-proof port mechanism when it is normally placed, such as the Z direction.

[0033] See Figures 1 to 3 As shown, Figure 1 An exploded view of one embodiment of an explosion-proof port mechanism provided in this application is shown; Figure 2 This application provides a schematic diagram of the connection structure of an embodiment of an explosion-proof port mechanism. Figure 3 This application provides a three-dimensional structural schematic diagram of an embodiment of an explosion-proof port mechanism. Figure 1 .

[0034] In some embodiments, the explosion-proof mechanism for the oven comprises an explosion-proof layer 10, an aluminum foil 20, and a heat preservation layer 30. The explosion-proof layer 10 comprises a first explosion-proof layer 11 and a second explosion-proof layer 12, wherein the first explosion-proof layer 11 and the second explosion-proof layer 12 are spaced apart along a first direction to form a containing space 13; the aluminum foil 20 comprises a first aluminum foil 21 attached to the first explosion-proof layer 11 and a second aluminum foil 22 attached to the second explosion-proof layer 12, wherein the first aluminum foil 21 is located in the containing space 13 and is configured to break when the bearing pressure value of the first aluminum foil 21 is greater than a set pressure value; and the heat preservation layer 30 is located between the first aluminum foil 21 and the second explosion-proof layer 12 along the first direction.

[0035] In the embodiments of the present application, the sealing performance of the oven is ensured by configuring the first aluminum foil 21, the second aluminum foil 22, and the multi-layer structure of the first explosion-proof layer 11 and the second explosion-proof layer 12, and the containing space 13 formed between the first explosion-proof layer 11 and the second explosion-proof layer 12 is used to place accessories, including the heat preservation layer 30 to maintain the temperature inside the oven and reduce the temperature difference between the inside and outside of the explosion-proof port, thereby avoiding the occurrence of water condensation phenomenon and affecting the quality of the dry film. For example, the heat preservation layer 30 is filled with aluminum silicate or rock wool heat preservation material. The thermal conductivity coefficient of aluminum silicate and rock wool is relatively low (about 0.035~0.04 W / (m·K)), and using it as the heat preservation material of the heat preservation layer 30 can effectively prevent heat transfer between the inside and outside of the oven, and filling the heat preservation layer 30 with heat preservation material can fill the small gaps of the heat preservation layer 30 to improve the heat preservation and sealing effect of the explosion-proof port mechanism. In the embodiments of the present application, high-temperature-resistant aluminum silicate is preferably used as the filling heat preservation material and is located between the first aluminum foil 21 and the second aluminum foil 22.

[0036] The first aluminum foil 21 is configured to break when the bearing pressure value of the first aluminum foil 21 is greater than a set pressure value, specifically, when the positive pressure inside the oven is greater than the bearing limit of the first aluminum foil 21, the first aluminum foil 21 will burst, thereby achieving the pressure relief condition and releasing the gas inside the oven. Correspondingly, the second aluminum foil 22 is also configured to break when the bearing pressure value of the second aluminum foil 22 is greater than a set pressure value, specifically, when the positive pressure inside the oven is greater than the bearing limit of the second aluminum foil 22, the second aluminum foil 22 will burst, thereby achieving the pressure relief condition and releasing the gas inside the oven.

[0037] Exemplarily, the thickness of the first aluminum foil 21 and the second aluminum foil 22 is generally about 0.2 mm, but the present application does not limit the thickness thereof, which can be set according to the positive and negative pressure limit values of the oven. Thus, aluminum foils 20 with different thicknesses are set to withstand different sizes of pressure. In some application scenarios, the first aluminum foil 21 and the second aluminum foil 22 are set to realize a double protection and double pressure relief mechanism, so as to ensure that when the pressure in the oven exceeds the safety threshold, the first aluminum foil 21 and the second aluminum foil 22 can sequentially break as a weak link to release the pressure of the oven, so as to prevent the internal pressure of the oven from being too high to cause a safety accident.

[0038] In some embodiments, the first explosion-proof layer includes a first steel wire mesh 110, which is used to be attached with the first aluminum foil 21, wherein the first aluminum foil 21 is located between the heat preservation layer 30 and the first steel wire mesh 110.

[0039] In combination with Figure 4 the drawings, Figure 4 Fig. 1 shows a perspective structural schematic diagram of an embodiment of an explosion-proof port mechanism provided by the present application. Figure 2 .

[0040] In some embodiments, the second explosion-proof layer includes a second steel wire mesh 120, which is used to be attached with the second aluminum foil 22, wherein the second aluminum foil 22 is located on the side of the second steel wire mesh 120 away from the heat preservation layer 30 along the first direction.

[0041] In the embodiments of the present application, since the heat preservation material (such as aluminum silicate) has a certain weight, in order to avoid the influence of the heat preservation material on the service life of the aluminum foil 20, the second steel wire mesh 120 is additionally provided to assist in supporting the heat preservation material to disperse the bearing pressure of the second aluminum foil 22 and improve the structural stability of the second aluminum foil 22. The second steel wire mesh 120 can also cooperate with the first steel wire mesh 110, that is, the first steel wire mesh 110 presses down the heat preservation material, and the second steel wire mesh 120 holds up the heat preservation material, so that the heat preservation material is compacted to improve the heat preservation effect of the heat preservation layer 30.

[0042] In some embodiments, the first explosion-proof layer 11 further includes a flange 111, and the second explosion-proof layer 12 includes a flange frame 121, wherein the first explosion-proof layer 11 and the second explosion-proof layer 12 are mutually buckled along the first direction to clamp the heat preservation layer 30.

[0043] In the embodiments of the present application, the flange 111 and the flange frame 121 can form a containing space 13 for containing a plurality of internal components in cooperation with each other, wherein the flange 111 and the flange frame 121 can be fixed by screws, and the combination of the two can withstand a certain pressure and exhibit a certain sealing performance. Exemplarily, the first steel wire mesh 110 is welded to the flange 111, and the second steel wire mesh 120 is welded to the flange frame 121.

[0044] In some embodiments, the second explosion-proof layer 12 further comprises a sealing strip 122, which is circumferentially arranged on the circumferential side of the flange frame 121, and the second aluminum foil 22 is located between the sealing strip 122 and the second steel wire mesh 120. In the embodiments of the present application, as shown in Figure 1 The sealing strip 122 can be completely pressed and blocked with the flange frame 121 and all gaps on the circumferential side of the flange frame 121, so as to further improve the sealing effect and prevent the gas or heat in the oven from leaking out of the gaps of the flange frame 121. For example, the second aluminum foil 22 is fixed to the bottom of the flange frame 121 by high-temperature adhesion, and after the second aluminum foil 22 is cured, the sealing strip 122 is adhered to further block the gaps between the flange frame 121 and the second aluminum foil 22.

[0045] Referring to Figures 5 to 6 As shown in Figure 5 A cross-sectional view of an embodiment of the explosion-proof port mechanism provided by the present application is shown; Figure 6 A perspective structural schematic view of an embodiment of the heat preservation tube 40 of the explosion-proof port mechanism provided by the present application is shown.

[0046] In some embodiments, the accommodation space 13 further comprises a heat preservation tube 40, which is located in the heat preservation layer 30, and the heat preservation tube 40 is further provided with a first tube opening 41 and a second tube opening 42 extending to the outside of the first explosion-proof layer 11 along the heat preservation layer 30.

[0047] In the embodiments of the present application, since the materials in the dry film oven need to be in a dry environment, the heat preservation tube 40 is added to ensure the constant temperature inside the oven. Specifically, the first tube opening 41 and the second tube opening 42 are used as the inlet and outlet of the constant temperature medium, and the constant temperature medium (such as hot water, oil, etc.) is transported in the heat preservation tube 40 to further reduce the probability of condensation. As shown in Figure 3 The first tube opening 41 and the second tube opening 42 are arranged at intervals along the length direction of the first explosion-proof layer 11 and can be connected with an external pump body.

[0048] For example, the heat preservation tube 40 can be a copper tube. Copper has excellent heat conductivity and high temperature resistance, and can be used as the base material of the heat preservation tube 40, which can still maintain its strength and performance at high temperatures, and thus is more suitable for the explosion-proof port mechanism.

[0049] In some application scenarios, the installation steps of the above explosion-proof port mechanism are as follows:

[0050] (1) The flange frame 121 and the second steel wire mesh 120 are welded into the second explosion-proof layer 12;

[0051] (2) The heat preservation tube 40 is placed in the flange frame 121, and a heat preservation material (such as aluminum silicate) is filled in;

[0052] (3) the first aluminum foil 21 is arranged on the heat preservation material along a first direction;

[0053] (4) the first steel wire mesh 110 and the flange 111 are sequentially arranged, and the first steel wire mesh 110 and the flange 111 are welded to form the first explosion-proof layer 11;

[0054] (5) the second aluminum foil 22 is arranged on the bottom of the second steel wire mesh 120, and the sealing strip 122 is arranged.

[0055] In some embodiments, the application also provides an oven comprising an oven body and the explosion-proof opening mechanism, wherein the oven body is in communication with the explosion-proof opening mechanism. In the application, the oven with the explosion-proof opening mechanism can better ensure the sealing effect of the oven, effectively reduce the temperature difference between the inside and outside of the oven, thereby avoiding the water condensation phenomenon and improving the quality of the dry film.

[0056] The above only describes the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, should be within the protection scope of the present application.

Claims

1. An explosion-proof door mechanism for an oven, characterized by, The explosion-proof layer comprises a first explosion-proof layer and a second explosion-proof layer, wherein the first explosion-proof layer and the second explosion-proof layer are spaced apart along a first direction to form a containing space. The aluminum foil comprises a first aluminum foil attached to the first explosion-proof layer and a second aluminum foil attached to the second explosion-proof layer, wherein the first aluminum foil is located in the containing space and is configured to be able to split when a bearing pressure value of the first aluminum foil is greater than a set pressure value. The thermal insulation layer is located between the first aluminum foil and the second explosion-proof layer along the first direction. The thermal insulation layer is filled with aluminum silicate or rock wool thermal insulation material.

2. The explosion door mechanism for an oven of claim 1, wherein, The first explosion-proof layer comprises a first steel mesh for attaching to the first aluminum foil, wherein the first aluminum foil is located between the thermal insulation layer and the first steel mesh.

3. The flame arrestor mechanism for an oven according to claim 1 or 2, characterized in that, The second explosion-proof layer comprises a second steel mesh for attaching to the second aluminum foil, wherein the second aluminum foil is located on a side of the second steel mesh away from the thermal insulation layer along the first direction.

4. The flame arrestor mechanism for an oven according to claim 1 or 2, characterized by, The first explosion-proof layer further comprises a flange, wherein 5. The explosion door mechanism for an oven of claim 3, wherein, The first explosion-proof layer and the second explosion-proof layer are mutually engaged along the first direction to clamp the thermal insulation layer. The second explosion-proof layer comprises a flange frame, wherein the first explosion-proof layer and the second explosion-proof layer are mutually engaged along the first direction to clamp the thermal insulation layer.

6. The flame arrestor mechanism for an oven of claim 4, wherein, The second explosion-proof layer further comprises a sealing strip circumferentially arranged on a circumferential side of the flange frame, wherein the second aluminum foil is located between the sealing strip and the second steel mesh.

7. The flame arrestor mechanism for an oven of claim 6, wherein, The containing space further comprises a thermal insulation pipe located in the thermal insulation layer, wherein the thermal insulation pipe is further provided with a first pipe opening and a second pipe opening extending to the outside of the first explosion-proof layer along the thermal insulation layer.

8. The flame arrestor mechanism for an oven of claim 1, wherein, The explosion-proof mechanism comprises a box body and the explosion-proof mechanism according to any one of claims 1 to 8, wherein the box body is in communication with the explosion-proof mechanism.

9. An oven characterized by, ​

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