Non-oxidation oven with anti-falling overhead door

Abstract

The non-oxidation oven with the anti-falling lifting door comprises an oven body, the oven body is provided with an oven opening communicated with an oven cavity of the oven body, the oven opening is movably provided with an oven door used for sealing the oven opening, and the oven body is provided with two lifting driving mechanisms located on the two sides of the oven opening respectively. The lifting driving mechanism comprises a first air cylinder which is fixed to the oven wall of the oven body and used for driving the oven door to ascend and descend, and the first air cylinder is connected with a control device for controlling a piston rod of the first air cylinder to stretch out and draw back. The first air cylinder drives the oven door to ascend and descend, and meanwhile the control device controls the air path of the first air cylinder so as to prevent the first air cylinder from driving the oven door to fall off when air and power are cut off, the use safety of the non-oxidation oven is improved, and products in the oven door and the oven cavity are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of baking equipment, in particular to a non-oxidation oven with an anti-fall lifting door. Background Art

[0002] Existing baking equipment generally places the product in a closed oven (or baking oven), and then closes the oven through the oven door for baking. In order to improve baking efficiency, ovens often use electrical automation drive devices instead of manual drive to quickly lift and lower the oven door to close and open the oven door. However, due to the heavy weight of the oven door, when the electrical automation drive device loses power or gas, the electrical automation drive device that controls the lifting and closing of the oven door may fail to control, and there is a hidden danger of the oven door falling in an emergency, causing the oven body to be smashed and the oven door and the products in the oven to suffer certain damage, which not only causes property losses, but also may injure operators, and is unsafe. Utility Model Content

[0003] The utility model aims to provide a non-oxidizing oven with an anti-fall lifting door, so as to solve the problem that the oven mentioned in the background technology has the hidden danger of emergency falling of the oven door, which may cause property loss and harm to operators.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A non-oxidation oven with an anti-fall lifting door comprises an oven body, wherein the oven body is provided with an oven opening connected to its oven cavity, wherein a furnace door for closing the oven opening is movably arranged at the oven opening, and the oven body is provided with two lifting drive mechanisms respectively located on both sides of the oven opening, wherein the lifting drive mechanisms comprise a first cylinder fixed to the wall of the oven body and used for driving the furnace door to be lifted and lowered, and wherein the first cylinder is connected to a control device for controlling the extension and retraction of its piston rod.

[0006] Preferably, the control device includes an air source processing component, a center leakage solenoid valve, a first air pipe and a second air pipe, the air source processing component is connected to the center leakage solenoid valve, the center leakage solenoid valve is connected to one end of the first air pipe and the second air pipe respectively, the other ends of the first air pipe and the second air pipe are respectively connected to the air inlet end and the air outlet end of the first cylinder, the center leakage solenoid valve is provided with three switchable interfaces, which are a lifting interface, a mid-position interface and a lowering interface, which are respectively used to control the air inlet and outlet directions of the first air pipe and the second air pipe.

[0007] Preferably, the first air pipes of the two first cylinders are connected to the center drain solenoid valve via a first three-way joint, and the second air pipes of the two first cylinders are connected to the center drain solenoid valve via a second three-way joint.

[0008] Preferably, the first air pipe is provided with a first induction check valve connected to the second air pipe and used for preventing falling, and the second air pipe is provided with a second induction check valve connected to the first air pipe and used for preventing falling.

[0009] Preferably, the lifting drive mechanism includes a slide rail and a slider, the slide rail is fixedly arranged on the oven body box wall on both sides of the oven opening along the height direction of the oven body, and the slider fixedly connected to the oven door is movably arranged on the slide rail.

[0010] Preferably, the furnace door includes a mounting frame and a movable door portion, wherein the mounting frame is fixed on the slider and connected to one end of the telescopic rod of the first cylinder, and a groove cavity for accommodating the movable door portion is opened at one end of the mounting frame toward the furnace opening, and the movable door portion for closing the furnace opening is movably arranged in the groove cavity.

[0011] Preferably, the lifting drive mechanism comprises a corner frame fixedly connected to the upper corner of the mounting frame, and the corner frame is connected to one end of the piston rod of the first cylinder.

[0012] Preferably, the groove cavity is provided with a plurality of push assemblies distributed on the upper and lower sides and / or left and right sides of the groove cavity, and the push assemblies include a second cylinder and a fixed block, the second cylinder is fixed on the groove wall of the groove cavity, the fixed block is fixed on the movable door part, and one end of the telescopic rod of the second cylinder is connected to the fixed block.

[0013] Preferably, the groove cavity is provided with a plurality of guide components distributed on the upper and lower sides and / or the left and right sides of the groove cavity, and the guide components include a mounting block and a guide block, the mounting block is fixed on the groove wall of the groove cavity, and the guide block connected to the movable door part is movably arranged on the mounting block.

[0014] Preferably, protective frames are provided on both sides of the oven opening of the oven body, and the lifting drive mechanism is accommodated in the protective frames.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The first cylinder drives the furnace door to rise and fall, and the control device controls the gas path of the first cylinder at the same time, so as to prevent the first cylinder from driving the furnace door to fall when the gas and power are cut off, thereby improving the safety of the non-oxidation oven and avoiding damage to the furnace door and the products in the furnace cavity;

[0017] 2. When the first cylinder drives the furnace door down to close the furnace door, there may still be a certain gap between the movable door of the furnace door and the furnace opening. Therefore, the second cylinder can drive the movable door part to move away from the installation frame part toward the furnace opening until the movable door part completely seals the furnace opening, thereby improving the sealing of the furnace door and facilitating adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the hidden protection frame of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the furnace mouth of the utility model;

[0021] Figure 4 This is a three-dimensional diagram of the furnace door of the utility model from the first viewing angle;

[0022] Figure 5 This is a stereoscopic diagram of the furnace door of the utility model from a second viewing angle;

[0023] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0024] Figure 7 This is a state diagram of the lifting interface of the control device of the utility model being connected with the first air pipe and the second air pipe;

[0025] Figure 8 This is a state diagram of the landing interface of the control device of the utility model being connected with the first air pipe and the second air pipe;

[0026] Fig. 9 This is a state diagram of the middle interface of the control device of the utility model being connected with the first air pipe and the second air pipe.

[0027] The markings in the figure correspond to the following:

[0028] 1- oven body; 11- oven mouth; 2- oven door; 21- installation frame; 211- slot cavity; 22- movable door; 3- lifting drive mechanism; 31- first cylinder; 32- slide rail; 33- slide block; 34- corner frame; 4- control device; 41- air source treatment assembly; 42- middle drain solenoid valve; 421- lifting interface; 422- middle position interface; 423- lowering interface; 43- first air pipe; 44- second air pipe; 45- first three-way joint; 46- second three-way joint; 47- first induced check valve; 48- second induced check valve; 5- push assembly; 51- second cylinder; 52- fixed block; 6- guide assembly; 61- installation block; 62- guide block; 7- protection frame. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-3 , a non-oxidizing oven with an anti-fall lifting door, comprising an oven body 1, the oven body 1 is provided with an oven opening 11 communicating with its oven cavity, and the oven opening 11 is movably provided with an oven door 2 for closing the oven opening 11. Figure 2 The oven body 1 is provided with two lifting drive mechanisms 3 respectively located on both sides of the oven opening 11. The lifting drive mechanism 3 includes a first cylinder 31 fixed on the wall of the oven body 1 and used to drive the oven door 2 to rise and fall. The first cylinder 31 is connected to a control device 4 for controlling the extension and retraction of its piston rod. The gas flow direction of the first cylinder 31 is controlled by the control device 4 to prevent the first cylinder 31 from driving the oven door 2 to fall when the gas and power are cut off, thereby improving the safety of the non-oxidation oven and preventing the oven door 2 and the products in the oven cavity from being damaged.

[0031] Preferably, protection frames 7 for protection are provided on both sides of the oven opening 11 of the oven body 1 , and the lifting drive mechanism 3 is accommodated in the protection frame 7 .

[0032] See also Figure 1 as well as Figure 7-9 The control device 4 includes an air source processing component 41, a middle leakage solenoid valve 42, a first air pipe 43 and a second air pipe 44. The air source processing component 41 is connected to the middle leakage solenoid valve 42. The air source processing component 41 is used as a component for air supply and is provided with a pressure regulating filter for filtering and regulating air pressure. The middle leakage solenoid valve 42 is connected to one end of the first air pipe 43 and the second air pipe 44 respectively, and the other ends of the first air pipe 43 and the second air pipe 44 are respectively connected to the air inlet end and the air outlet end of the first cylinder 31. During normal air supply, the gas flows along the first air pipe 43 to the air inlet end of the first cylinder 31, and flows out from the air outlet end of the first cylinder 31 and flows to the second air pipe 44, or the gas flows along the second air pipe 44 to the air outlet end of the first cylinder 31, and flows out from the air inlet end of the first cylinder 31 and flows to the first air pipe 43. The middle drain solenoid valve 42 is provided with three switchable interfaces, namely a lifting interface 421, a middle interface 422 and a lowering interface 423, which are respectively used to control the inlet and outlet directions of the first air pipe 43 and the second air pipe 44. In this embodiment, the middle drain solenoid valve 42 is a five-port three-position solenoid valve.

[0033] See also Figure 7-9The first air pipes 43 of the two first air cylinders 31 are connected to the middle drain solenoid valve 42 through a first three-way joint 45, and the second air pipes 44 of the two first air cylinders 31 are connected to the middle drain solenoid valve 42 through a second three-way joint 46. The first air pipe 43 is provided with a first induction check valve 47 connected to the second air pipe 44 and used for anti-falling, and the second air pipe 44 is provided with a second induction check valve 48 connected to the first air pipe 43 and used for anti-falling. In this embodiment, the first induction check valve 47 and the second induction check valve 48 need to be ventilated before they can be opened and ventilated normally, otherwise they will be in a closed state.

[0034] See also Figure 2 as well as Figure 7 When the furnace door 2 needs to be opened, the middle drain solenoid valve 42 is connected to the first air pipe 43 and the second air pipe 44 respectively through the lifting interface 421, and the gas flows in the first air pipe 43 and the second air pipe 44 in the counterclockwise direction as shown by the arrow in the figure, and the first induced check valve 47 and the second induced check valve 48 are both in the open state. At this time, the piston rods of the two first cylinders 31 extend outward relative to the first cylinder 31 and drive the furnace door 2 to move upward, thereby opening the furnace door 2.

[0035] See also Figure 2 as well as Figure 8 When the furnace door 2 needs to be closed, the middle drain solenoid valve 42 is connected to the first air pipe 43 and the second air pipe 44 through the landing interface 423, and the gas flows in the first air pipe 43 and the second air pipe 44 in the clockwise direction as shown by the arrow in the figure. The first induced check valve 47 and the second induced check valve 48 are both in the open state. At this time, the piston rods of the two first cylinders 31 contract inwardly relative to the first cylinder 31 and drive the furnace door 2 to move downward, so that the furnace door 2 closes the furnace mouth 11.

[0036] See also Figure 2 as well as Fig. 9 When the power or gas is suddenly cut off, the coils at both ends of the middle leakage solenoid valve 42 are not energized, and the middle leakage solenoid valve 42 remains in the middle position. At this time, the middle leakage solenoid valve 42 is connected with the first air pipe 43 and the second air pipe 44 respectively through the middle position interface 422, and the gas flows along the first air pipe 43 and the second air pipe 44 to the middle leakage solenoid valve 42 in the direction indicated by the arrow in the figure and flows out through the middle leakage solenoid valve 42; when there is no gas in the first air pipe 43 and the second air pipe 44 to provide to the first induced check valve 47 and the second induced check valve 48, the first induced check valve 47 and the second induced check valve 48 are both in a closed state to lock the gas at the air inlet and outlet ends of the first cylinder 31, and the piston rod of the first cylinder 31 remains stationary, so that the furnace door 2 remains stationary to prevent falling.

[0037] See also Figure 2 as well as Figure 4-5The lifting drive mechanism 3 includes a slide rail 32 and a slider 33. The slide rail 32 is fixedly arranged on the oven body 1 box wall on both sides of the oven opening 11 along the height direction of the oven body 1, and the slider 33 fixedly connected to the oven door 2 is movably arranged on the slide rail 32.

[0038] See also Figure 5-6 The furnace door 2 includes a mounting frame 21 and a movable door 22. The mounting frame 21 is fixed on the slider 33 and connected to one end of the telescopic rod of the first cylinder 31. The mounting frame 21 is provided with a groove 211 for accommodating the movable door 22 at one end facing the furnace opening 11. The movable door 22 for closing the furnace opening 11 is movably arranged in the groove 211.

[0039] Preferably, the lifting drive mechanism 3 includes a corner frame 34 fixedly connected to the upper corner of the mounting frame 21, and the corner frame 34 is connected to one end of the piston rod of the first cylinder 31. The first cylinder 31 drives the mounting frame 21 and the movable door part 22 of the entire furnace door 2 to rise and fall together through the corner frame 34.

[0040] See also Figure 6 , the groove cavity 211 is provided with a plurality of push components 5 distributed on the upper and lower sides and / or the left and right sides of the groove cavity 211. The push components 5 include a second cylinder 51 and a fixed block 52, and the second cylinder 51 is fixed on the groove wall of the groove cavity 211. The fixed block 52 is fixed on the movable door part 22, and one end of the telescopic rod of the second cylinder 51 is connected to the fixed block 52. The groove cavity 211 is provided with a plurality of guide components 6 distributed on the upper and lower sides and / or the left and right sides of the groove cavity 211, and the guide components 6 include a mounting block 61 and a guide block 62. The mounting block 61 is fixed on the groove wall of the groove cavity 211, and the guide block 62 connected to the movable door part 22 is movably arranged on the mounting block 61, and the guide block 62 is used to guide the movable door part 22 to move, and at the same time, it plays a limiting role on the movable door part 22.

[0041] When the first cylinder 31 drives the furnace door 2 to descend to close the furnace door 2, there may still be a certain gap between the movable door of the furnace door 2 and the furnace opening 11. Therefore, the second cylinder 51 can drive the movable door portion 22 to move away from the installation frame portion 21 toward the furnace opening 11 until the movable door portion 22 completely seals the furnace opening 11, thereby improving the sealing performance of the furnace door 2 and facilitating adjustment.

[0042] A heating device for heating the furnace cavity, a cooling device for cooling the furnace cavity, and an oxygen analyzer for real-time monitoring of the oxygen concentration in the furnace cavity are respectively arranged in the furnace cavity of the oven body 1. In this embodiment, the heating device, the cooling device, and the oxygen analyzer are all commonly used devices in the prior art, and their structures are not described in detail here.

[0043] 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 non-oxidation oven with an anti-fall lifting door, comprising an oven body (1), wherein the oven body (1) is provided with an oven opening (11) communicating with the oven cavity thereof, wherein: An oven door (2) for closing the oven opening (11) is movably arranged at the oven opening (11), and two lifting drive mechanisms (3) are arranged on the oven body (1) and are respectively located on both sides of the oven opening (11). The lifting drive mechanism (3) comprises a first cylinder (31) fixed on the wall of the oven body (1) and used for driving the oven door (2) to rise and fall, and the first cylinder (31) is connected to a control device (4) for controlling the extension and retraction of its piston rod.

2. The non-oxidation oven with an anti-fall lifting door according to claim 1, characterized in that: The control device (4) comprises an air source processing component (41), a center leakage solenoid valve (42), a first air pipe (43) and a second air pipe (44); the air source processing component (41) is connected to the center leakage solenoid valve (42); the center leakage solenoid valve (42) is connected to one end of the first air pipe (43) and one end of the second air pipe (44) respectively; the other ends of the first air pipe (43) and the second air pipe (44) are respectively connected to the air inlet end and the air outlet end of the first cylinder (31); the center leakage solenoid valve (42) is provided with three switchable interfaces, namely a lifting interface (421), a middle interface (422) and a lowering interface (423), which are respectively used to control the air inlet and outlet directions of the first air pipe (43) and the second air pipe (44).

3. The non-oxidation oven with an anti-fall lifting door according to claim 2, characterized in that: The first air pipes (43) of the two first air cylinders (31) are connected to the center drain solenoid valve (42) via a first three-way joint (45), and the second air pipes (44) of the two first air cylinders (31) are connected to the center drain solenoid valve (42) via a second three-way joint (46).

4. The non-oxidation oven with an anti-fall lifting door according to claim 2 or 3, characterized in that: The first air pipe (43) is provided with a first induction check valve (47) connected to the second air pipe (44) and used for preventing falling, and the second air pipe (44) is provided with a second induction check valve (48) connected to the first air pipe (43) and used for preventing falling.

5. The non-oxidation oven with an anti-fall lifting door according to claim 1, characterized in that: The lifting drive mechanism (3) comprises a slide rail (32) and a slider (33); the slide rail (32) is fixedly arranged on the oven body (1) box wall on both sides of the oven opening (11) along the height direction of the oven body (1); and the slider (33) fixedly connected to the oven door (2) is movably arranged on the slide rail (32).

6. The non-oxidation oven with an anti-fall lifting door according to claim 5, characterized in that: The furnace door (2) comprises a mounting frame (21) and a movable door portion (22); the mounting frame (21) is fixed on a slide block (33) and connected to one end of a telescopic rod of a first cylinder (31); a groove cavity (211) for accommodating the movable door portion (22) is provided at one end of the mounting frame (21) facing the furnace opening (11); the movable door portion (22) for closing the furnace opening (11) is movably arranged in the groove cavity (211).

7. The non-oxidation oven with an anti-fall lifting door according to claim 6, characterized in that: The lifting drive mechanism (3) comprises a corner frame (34) fixedly connected to the upper corner of the mounting frame (21); the corner frame (34) is connected to one end of the piston rod of the first cylinder (31).

8. The non-oxidation oven with an anti-fall lifting door according to claim 6, characterized in that: The groove cavity (211) is provided with a plurality of push assemblies (5) distributed on the upper and lower sides and / or the left and right sides of the groove cavity (211). The push assemblies (5) include a second cylinder (51) and a fixed block (52). The second cylinder (51) is fixed on the groove wall of the groove cavity (211), and the fixed block (52) is fixed on the movable door portion (22). One end of the telescopic rod of the second cylinder (51) is connected to the fixed block (52).

9. The non-oxidation oven with an anti-fall lifting door according to any one of claims 6 to 8, characterized in that: A plurality of guide assemblies (6) are arranged in the groove cavity (211) and are distributed on the upper and lower sides and / or the left and right sides of the groove cavity (211). The guide assembly (6) comprises a mounting block (61) and a guide block (62). The mounting block (61) is fixed on the groove wall of the groove cavity (211), and the guide block (62) connected to the movable door portion (22) is movably arranged on the mounting block (61).

10. The non-oxidation oven with an anti-fall lifting door according to claim 1, characterized in that: Protection frames (7) are provided on both sides of the oven opening (11) of the oven body (1), and the lifting drive mechanism (3) is accommodated in the protection frames (7).

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