Casement access door for drying furnace of coating workshop

Abstract

The utility model discloses a vertical hinged access door for a drying furnace of a coating workshop, which comprises an inner door frame and a door body, the inner door frame is mounted on a drying furnace body, the door body is movably connected with the inner door frame, a heat insulation device is arranged on the surface of the inner door frame facing to an inner door plate, the door body comprises an outer door frame and an inner door plate, and the outer door plate is respectively connected to two sides of the outer door frame; the inner door plate and the outer door plate each comprise a cuboid cavity, openings of the cavities face the outer door frame, heat preservation materials are contained in the cavities, and sealing materials are vertically and circumferentially arranged along the outer surface of the cavity of the inner door plate. When the access door is in a closed state, the sealing material arranged in the vertical circumferential direction of the inner door plate is tightly attached to the surface, facing the door opening, of the inner door frame, the sealing material and the surface, facing the door opening, of the inner door frame form plane contact compression, and a convex edge on the periphery of an opening of a cuboid cavity included in the inner door plate covers a heat insulation device on the inner door frame. The door body and the heat insulation device are in a plane pressing state, sealing is tighter through plane pressing, and the heat insulation sealing effect is better.

Description

Technical Field

[0001] The utility model relates to the field of drying furnaces in coating workshops, and specifically refers to a flat opening inspection door for drying furnaces in coating workshops. Background Art

[0002] The drying furnace equipment in the painting workshop has the function of heat insulation and heat preservation, and its ancillary equipment should also meet this requirement. After years of development, the coating equipment has put forward higher requirements on the appearance, performance and other aspects of the equipment. With the improvement of national environmental protection and emission requirements, the sealing requirements of the drying furnace and its ancillary equipment in the painting workshop have also been further improved. The inspection door is located on the drying furnace body. When the drying furnace fails and stops working and needs to be repaired, the staff can open the inspection door to enter the furnace body for maintenance; the compression and sealing of the drying furnace inspection door are important guarantees for the sealing of the drying furnace. Conventional drying furnace inspection doors in painting workshops have problems such as air leakage and poor sealing performance after long-term use. Utility Model Content

[0003] The utility model aims to provide a flat opening inspection door for a drying furnace in a coating workshop, so as to solve the problem that the inspection door of the drying furnace will leak and have poor sealing performance after long-term use.

[0004] In order to achieve the above objectives, the technical solution of the utility model is:

[0005] A swing inspection door for a drying furnace in a coating workshop comprises an inner door frame and a door body, wherein the inner door frame is mounted on a drying furnace body, the door body and the inner door frame are movably connected via a rotating device, a locking device is mounted on the door body, a lock catch is mounted on the inner door frame, a heat insulating device is arranged on the surface of the inner door frame facing the inner door panel, the door body comprises an inner door panel, an outer door frame, a heat insulating material, an outer door panel, and a connecting door panel; the inner door panel and the outer door panel are respectively connected to both sides of the outer door frame; the connecting door panel is arranged on the outer surface of the outer door panel, the inner door panel and the outer door panel each comprise a cavity in the form of a rectangular parallelepiped, the openings of the cavities of the inner door panel and the outer door panel both face the outer door frame, the heat insulating material is accommodated in the cavity, and the sealing material is arranged vertically and circumferentially along the outer surface of the cavity of the inner door panel.

[0006] Furthermore, a continuous convex edge is provided on the periphery of the opening of the rectangular cavity of the inner door panel, and the convex edge and the opening of the cavity form a rectangular frame, and a plurality of bolt holes are arranged at intervals on the convex edge; the outer surfaces of the top surface, bottom surface and left and right sides of the rectangular cavity included in the inner door panel are provided with continuous grooves, and the sealing material is arranged in the grooves, and the sealing material protrudes from the grooves.

[0007] Furthermore, the outer door panel includes a rectangular cavity, the opening of the cavity faces the outer door frame, the cavity contains thermal insulation material, the outer surface of the bottom of the cavity is provided with a continuous convex edge on the periphery, the convex edge and the outer surface of the bottom of the outer door panel cavity form a rectangular plate, and a plurality of bolt holes are provided on the convex edge at intervals; one side of the outer door panel is the thermal insulation material, and the other side of the outer door panel is the connecting door panel, which covers the outer surface of the bottom of the outer door panel cavity and the convex edge on the outer surface of the bottom.

[0008] Furthermore, a plurality of bolt holes are arranged on the convex edge of the outer periphery of the opening of the inner door panel cavity, a plurality of bolt holes are arranged at intervals on the outer door frame, a plurality of bolt holes are arranged on the convex edge of the outer periphery of the bottom surface of the outer door panel cavity, and a plurality of bolt holes are arranged on the connecting door panel. The bolt holes on the inner door panel, outer door frame, outer door panel and connecting door panel correspond to each other, and the bolts pass through the bolt holes on the inner door panel, outer door frame, outer door panel and connecting door panel in turn. The inner door panel, outer door frame, outer door panel and connecting door panel are fixed together by bolts and nuts to form a door body. When the four are fixed together, the insulation material is sandwiched between the inner door panel and the outer door panel.

[0009] Furthermore, the rotating device includes an intermediate bracket, an intermediate shaft, a connecting rod, an L-shaped bracket, and a rotating support; the intermediate bracket is arranged on the connecting door panel, one end of the intermediate shaft is loosely matched with the intermediate bracket, and the other end is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the rotating support; one side of the L-shaped bracket is arranged on the outer surface of the drying furnace body, and the other side is connected to one end of the connecting shaft, and the other end of the connecting shaft is loosely matched with one end of the rotating support.

[0010] Furthermore, an L-shaped intermediate bracket is installed at the middle part of the upper end and the middle part of the lower end of the outer surface of the connecting door panel, and the L-shaped intermediate bracket includes an integrally formed horizontal plate and a vertical plate. The vertical plate is fixed on the connecting door panel, and the horizontal plate protrudes from the surface of the connecting door panel. A circular hole is arranged on the horizontal plate, and one end of the intermediate shaft is gap-matched with the circular hole on the horizontal plate, and the other end of the intermediate shaft is inserted into one end of a connecting rod.

[0011] Furthermore, the rotating support is connected between two connecting rods, the two connecting rods are arranged up and down and are parallel, the rotating support is a vertically arranged straight rod, the upper end of the rotating support is connected to one end of a connecting rod located above, and the lower end of the rotating support is connected to one end of a connecting rod located below, and the other ends of the two connecting rods are both arranged into a columnar body, and one end of the intermediate shaft is inserted into the columnar body; there is a boss at the top and bottom ends of the rotating support respectively.

[0012] Furthermore, an L-shaped bracket is provided at the connection between the connecting rod and the rotating support, the vertical plate of the L-shaped bracket is fixed on the outer surface of the drying furnace body, the horizontal plate of the L-shaped bracket covers the boss, the connecting shaft is in a vertical state, one end of the connecting shaft is connected to the horizontal plate of the L-shaped bracket, and the other end of the connecting shaft is inserted into the boss, and the connecting shaft and the boss are clearance-matched.

[0013] Furthermore, the lock is L-shaped, one side of the lock is provided with a bolt hole, and the end of the other side of the lock is provided with an L-shaped hook; the side of the lock with the bolt hole is fixed to the side of the inner door frame facing the inside of the drying furnace, the bottom of the other side of the lock is connected to the side of the lock with the bolt, the top of the other side of the lock faces the inside of the drying furnace, and the other side of the lock is flush with the left or right side of the inner door frame facing the door opening, and multiple locks are arranged at upper and lower intervals on the side of the left inner door frame or the right inner door frame facing the inside of the drying furnace; when the lock is installed on the inner door frame, the hook is an inverted L-shape.

[0014] Furthermore, the locking device includes a rotating shaft, one end of the rotating shaft passes through the door panel and is connected to the handle, and the other end of the rotating shaft passes through the inner door panel and is connected to the locking plate, and when the handle is turned, the rotating shaft rotates around the door body;

[0015] The locking plate is Z-shaped, and the horizontal bottom of the Z is connected to the second gasket. When the inspection door is in the closed state, the horizontal upper part of the Z-shaped locking plate is horizontally stuck in the corner of the inverted L-shaped hook to lock the door body and the inner door frame; when the inspection door is opened, turn the handle, and the horizontal upper part of the Z-shaped locking plate rotates to a vertical state and is no longer stuck in the corner of the L-shaped hook.

[0016] The beneficial effects of the utility model are:

[0017] 1. When the inspection door is in a closed state, the sealing material arranged along the vertical circumference of the inner door panel is in close contact with the surface of the inner door frame facing the door opening, and the sealing material and the surface of the inner door frame facing the door opening form a flat contact and compression, which makes the seal tighter and has a better sealing effect.

[0018] 2. When the inspection door is in a closed state, the convex edge of the outer periphery of the opening of the rectangular cavity included in the inner door panel covers the heat insulation device on the inner door frame, and the door body and the heat insulation device are in a flat pressed state. The door body presses the heat insulation device to prevent heat leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the utility model.

[0020] Figure 2 This is an exploded view of the utility model.

[0021] Figure 3 It is a top view of the flat door of the utility model.

[0022] Figure 4 This is a schematic diagram of the assembly of the inner door frame of the utility model;

[0023] Figure 5 This is a schematic diagram of assembling the outer door frame of the utility model.

[0024] Figure 6 It is a schematic diagram of the rotating device of the utility model.

[0025] Figure 7 It is a schematic diagram of the lock of the utility model.

[0026] Figure 8 This is a schematic diagram of the locking device of the utility model.

[0027] 1-inner door panel; 2-locking device; 21-handle; 22-first gasket; 23-rotating shaft; 24-second gasket; 25-locking plate; 3-lock buckle; 31-hook; 4-bolt; 5-nut; 6-insulation device; 7-outer door frame, 701-upper and lower outer door frames, 702-left and right outer door frames; 8-connecting door panel; 9-outer door panel; 10-reinforcement rib; 11-middle bracket; 12-middle shaft; 13-connecting rod; 14-bracket; 15-rotating support; 1501-boss; 16-inner door frame, 1601-upper and lower inner door frames; 1602-left and right inner door frames; 17-sealing material; 18-insulating material. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described below with reference to the accompanying drawings.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, in the present invention, the flat opening inspection door of the present invention comprises an inner door frame 16, an outer door frame 7 and a door body.

[0030] like Figure 4 As shown, the inner door frame 16 is formed into a rectangular frame by the upper and lower door frames 1601 and the left and right door frames 1602 in the radial direction; the inner door frame 16 can be installed on the drying furnace body by welding, and the middle of the inner door frame is a door opening for the staff to enter and exit the drying furnace. The upper and lower door frames 1601 and the left and right door frames 1602 are assembled and welded on the corresponding workbench. Bolts are welded on the inner bottom surface of the enclosed rectangular frame.

[0031] The upper and lower inner door frames 1601 and the left and right inner door frames 1602 have a certain width. A heat insulation device 6 is provided on the surface of the inner door frame 16 facing the inner door panel 1. The heat insulation device 6 is a rectangular frame. The heat insulation device 6 is installed on the surface of the inner door frame 16 by bolts 4 and nuts 5. The heat insulation device 6 can prevent heat from overflowing.

[0032] Considering that Teflon is resistant to high temperatures but has poor heat conductivity, the heat insulation device 6 is generally made of Teflon.

[0033] like Figure 5 As shown, the outer door frame 7 is radially surrounded by the upper and lower outer door frames 701 and the left and right outer door frames 702 to form a rectangular frame. The upper and lower outer door frames 701 and the left and right outer door frames 702 are formed by assembling and welding on a corresponding workbench. A plurality of bolt holes are arranged at intervals on the outer door frame 7. The bolt holes on the outer door frame 7 are arranged at intervals on the upper and lower outer door frames 701 and the left and right outer door frames 702.

[0034] The door body comprises an inner door panel 1 , an outer door frame 7 , a heat-insulating material 18 , an outer door panel 9 , and a connecting door panel 8 .

[0035] One side of the outer door frame 7 is the inner door panel 1 , and the other side of the outer door frame 7 is the outer door panel 9 .

[0036] The inner door panel 1 includes a rectangular cavity, the opening of which faces the outer door frame 7. The rectangular cavity on the inner door panel 1 is located on the side of the inner door panel 1 close to the inner door frame 16. The cavity accommodates insulation material 18, which can be a rectangular rock wool insulation board. The size of the insulation material is adapted to the size of the cavity. A continuous convex edge is provided on the periphery of the cavity opening. The convex edge and the opening of the cavity form a rectangular frame, and a plurality of bolt holes are provided on the convex edge at intervals.

[0037] The inner door panel 1, the outer door panel 9, and the connecting door panel 8 are directly bent and formed. The outer door panel 9 is bent and formed around, and the cross section around is groove-shaped. The connecting door panel 8 is formed by bending a thin plate around, and the cross section direction is C-shaped. Holes are cut intermittently on the C-shaped bending edge, and nuts are welded. The upper and lower parts of the surface of the connecting door panel 8 are installed with reinforcing ribs 10. The reinforcing ribs 10 are made of thick plates and are intermittently welded with the connecting door panel 8 to form a whole. The reinforcing ribs 10 are provided with installation holes for the locking device 2.

[0038] The outer door panel 9 includes a rectangular cavity, the opening of which faces the outer door frame 7. The cavity contains insulation material 18, which can be a rectangular rock wool insulation board. The size of the insulation material is adapted to the size of the cavity of the outer door panel 9. The back side of the cavity opening, i.e., the periphery of the outer surface of the cavity bottom surface, is provided with a continuous convex edge. The convex edge and the outer surface of the cavity bottom surface form a rectangular plate, and a plurality of bolt holes are arranged at intervals on the convex edge. One side of the outer door panel 9 is insulation material 18, and the other side of the outer door panel 9 is a connecting door panel 8. The connecting door panel 8 is fixed to the surface of the outer door panel 9 by intermittent welding. The connecting door panel 8 covers the outer surface of the bottom surface of the cavity of the outer door panel 9 and the convex edge around the outer surface of the bottom surface.

[0039] The size of the rectangular cavity on the outer door panel 9 matches the size of the rectangular frame in the middle of the outer door frame 7 , and the rectangular frame in the middle of the outer door frame 7 can accommodate the rectangular cavity on the outer door panel 9 .

[0040] The connecting door plate 8 covers the surface of the outer door plate 9, so that the connecting door plate 8 can cover the bolts inside the inspection door structure.

[0041] The top surface, bottom surface and left and right side outer surfaces of the rectangular cavity included in the inner door panel 1 are provided with continuous sealing material 17, and the sealing material 17 is silicone. The silicone is arranged in a vertical rectangle along the outer periphery of the rectangular cavity of the inner door panel 1. To facilitate the installation of the sealing material 17, the top surface, bottom surface and left and right side outer surfaces of the rectangular cavity included in the inner door panel 1 can be provided with continuous grooves, and the sealing material 17 is arranged in the grooves, and the sealing material 17 can be slightly protruding from the grooves; before installing the sealing material 17, first connect the inner door panel 1, the outer door frame 7, and the outer door panel 9 with bolts.

[0042] A plurality of bolt holes are arranged on the convex edge of the outer periphery of the cavity opening of the inner door panel 1, a plurality of bolt holes are arranged at intervals on the outer door frame 7, a plurality of bolt holes are arranged on the convex edge of the outer periphery of the bottom outer surface of the cavity of the outer door panel 9, and a plurality of bolt holes are arranged on the connecting door panel 8. The bolt holes on the inner door panel 1, the outer door frame 7, the outer door panel 9, and the connecting door panel 8 correspond to each other, and the bolts pass through the bolt holes on the inner door panel 1, the outer door frame 7, the outer door panel 9, and the connecting door panel 8 in turn. The inner door panel 1, the outer door frame 7, the outer door panel 9, and the connecting door panel 8 are fixed together by bolts and nuts to form a door body. When the four are fixed together, the insulation material 18 is clamped between the inner door panel 1 and the outer door panel 9; after the inner door panel 1, the outer door frame 7, the outer door panel 9, and the connecting door panel 8 are fixed together, the sealing material 17 is installed to complete the production of the door body.

[0043] In the present invention, the flat opening inspection door further comprises a rotating device, through which the door body is movably connected to an inner door frame 16 installed on the drying furnace body.

[0044] The rotating device includes an intermediate bracket 11, an intermediate shaft 12, a connecting rod 13, an L-shaped bracket 14, and a rotating support 15. The intermediate shaft 12 is "convex" in axial section. The connecting rod 13 and the rotating support 15 are both made of profiles. The upper and lower parts of the rotating support 15 are also small cones with "convex" cross-sections. The connecting rod 13 and the large boss of the intermediate shaft 12 are welded to form a connecting rod assembly. The two ends of the rotating support 15 are respectively welded to the connecting rod 13.

[0045] like Figure 1 , Figure 2As shown in the figure, an L-shaped intermediate bracket 11 is installed at the middle part of the upper end and the middle part of the lower end of the outer surface of the connecting door panel 8. The L-shaped intermediate bracket 11 includes an integrally formed horizontal plate and a vertical plate. The vertical plate is fixed to the connecting door panel 8 by screws. The horizontal plate protrudes from the surface of the connecting door panel 8. A circular hole can be set on the horizontal plate. One end of the intermediate shaft 12 is gap-matched with the circular hole on the horizontal plate, so that the door body can rotate around the intermediate shaft 12. The other end of the intermediate shaft 12 is inserted into one end of the connecting rod 13.

[0046] Each L-shaped intermediate bracket 11 is connected to one end of an intermediate shaft 12 , and the other end of each intermediate shaft 12 is connected to one end of a connecting rod 13 . The other end of the intermediate shaft 12 can be connected to the connecting rod 13 by welding.

[0047] like Figure 5 The rotating support 15 is connected between the two connecting rods 13, the two connecting rods 13 are arranged up and down and are parallel to each other, the rotating support 15 is a vertically arranged straight rod, the rotating support 15 is perpendicular to the two connecting rods 13, the upper end of the rotating support 15 is connected to one end of the connecting rod 13 located above, and the lower end of the rotating support 15 is connected to one end of the connecting rod 13 located below, and the other ends of the two connecting rods 13 are both arranged as a columnar body, and one end of the intermediate shaft 12 is inserted into the columnar body. The other end of the intermediate shaft 12 is inserted into the circular hole on the horizontal plate of the L-shaped intermediate bracket 11, and the circular hole gap on the horizontal plate of the L-shaped intermediate bracket 11 is matched.

[0048] The top and bottom ends of the rotating support 15 each have a boss 1501 .

[0049] like Figure 1 and Figure 2 As shown, an L-shaped bracket 14 is provided at the connection between the connecting rod 13 at the upper end and the rotating support 15, and the vertical plate of the L-shaped bracket 14 can be welded or fixed to the outer surface of the drying furnace body by bolts, and the horizontal plate of the L-shaped bracket 14 is located at one end of the boss 1501, and the horizontal plate of the L-shaped bracket 14 covers the boss 1501, and the connecting shaft is in a vertical state, one end of the connecting shaft is connected to the horizontal plate of the L-shaped bracket 14, and the other end of the connecting shaft is inserted into the boss 1501, and the connecting shaft and the boss 1501 are clearance-matched, so that the rotating support 15 can rotate around the connecting shaft.

[0050] An L-shaped bracket 14 is also provided at the connection between the connecting rod 13 at the lower end and the rotating support 15. The vertical plate of the L-shaped bracket 14 can be welded or fixed to the outer surface of the drying furnace body by bolts. The horizontal plate of the L-shaped bracket 14 is located at one end of the boss 1501, and the horizontal plate of the L-shaped bracket 14 covers the boss 1501. The connecting shaft is in a vertical state, one end of the connecting shaft is connected to the horizontal plate of the L-shaped bracket 14, and the other end of the connecting shaft is inserted into the boss 1501, and the connecting shaft and the boss 1501 are clearance-matched, so that the rotating support 15 can rotate around the connecting shaft.

[0051] The door body and the inner door frame 16 can be connected movably by means of upper and lower connecting rods 13, a rotating support 15, two L-shaped brackets 14 arranged on the outer surface of the drying furnace body, two upper and lower intermediate brackets 11, and an intermediate shaft 12 cooperating with the intermediate brackets 11; when the casement inspection door is in a closed state, the connecting rod 13 at the lower end is close to the threshold at the lower part of the door body.

[0052] like Figure 1 and Figure 2 As shown, the flat opening inspection door of the present invention further comprises a locking device 2 and a lock catch 3 . The locking device 2 is arranged on the door body, and the lock port 3 is arranged on the inner door frame 16 .

[0053] like Figure 7 As shown, the lock buckle 3 is L-shaped, and one side of the L-shaped lock buckle 3 is provided with a bolt hole. The side of the L-shaped lock buckle 3 with the bolt hole is fixed to the side of the inner door frame 16 facing the inside of the drying oven, and the other side of the L-shaped lock buckle 3 is vertically arranged, and the bottom of the other side of the lock buckle 3 is connected to the side of the lock buckle 3 with the bolt, and the top of the other side of the lock buckle 3 faces the inside of the drying oven, and the other side of the lock buckle 3 is flush with the left or right side of the inner door frame 16 facing the door opening. The inner door frame 16 includes a left inner door frame and a right inner door frame, and multiple L-shaped lock buckles 3 can be arranged on the side of the left inner door frame and the right inner door frame facing the inside of the drying oven, and multiple L-shaped lock buckles 3 are arranged up and down on the left inner door frame or the right inner door frame.

[0054] One side of the L-shaped lock buckle 3 is provided with a screw hole, and the other side of the L-shaped lock buckle 3 is provided with an L-shaped hook 31. Specifically, the other end of the lock buckle 3 is designed to be L-shaped. When the lock buckle 3 is installed on the inner door frame, the hook 31 is an inverted L-shape.

[0055] In a specific embodiment of the utility model, two lock buckles 3 are respectively arranged on one surface of the left inner door frame and the right inner door frame facing the inside of the drying oven, and the two lock buckles 3 are arranged up and down on the left inner door frame or the right inner door frame.

[0056] The number of the locking devices 2 is equal to the number of the lock buckles 3 , and the positions of the locking devices 2 correspond to the positions of the lock buckles 3 .

[0057] In a specific embodiment of the present invention, two locking devices 2 are arranged on the upper and lower sides of the left side of the door body, and two locking devices 2 are arranged on the upper and lower sides of the right side of the door body.

[0058] like Figure 8 As shown, the locking device 2 includes a handle 21, a first gasket 22, a rotating shaft 23, a second gasket 24, and a locking plate 25. The rotating shaft 23 passes through the door body, one end of the rotating shaft 23 is located on the outside of the connecting door panel 8, and the other end extends from the inner door panel 1. The end of the rotating shaft 23 located on the outside of the connecting door panel 8 passes through the middle of the first gasket 22 and extends from the first gasket 22. The end of the rotating shaft 23 extending from the first gasket 22 is connected to the handle 21. The rotating shaft 23 and the first gasket 22 are clearance-matched. A plurality of bolt holes can be provided on the edge of the surface of the first gasket. The first gasket 22 is fixed to the connecting door panel 8 by bolts. When a reinforcing rib 10 is provided on the connecting door panel 8, the first gasket 22 can be provided on the surface of the reinforcing rib 10. The end of the rotating shaft 23 located on the outside of the connecting door panel 8 first passes through the reinforcing rib 10 and then passes through the middle of the first gasket 22. The end of the rotating shaft 23 extending from the first gasket 22 is connected to the handle 21.

[0059] The second gasket 24 is located on the side of the inner door panel 1 facing the inside of the drying furnace body. The other end of the rotating shaft 23 extends from the inner door panel 1 and then passes through the middle of the second gasket 24. The rotating shaft 23 extends from the second gasket 24 and is connected to the locking plate 25. The rotating shaft 23 and the second gasket 24 are loosely matched. A plurality of bolt holes can be set on the edge of the surface of the second gasket 24, and the second gasket 24 is fixed to the inner door panel 1 by bolts.

[0060] The rotating shaft 23 is loosely matched with the first gasket 22, the door body, and the second gasket 24, and the rotating shaft 23 can rotate relative to the door body.

[0061] like Figure 8 The locking piece 25 is Z-shaped, and the horizontal bottom of the Z-shaped piece is connected to the second gasket 24. When the inspection door is in a closed state, the horizontal upper part of the Z-shaped locking piece 25 is horizontally stuck at the corner of the L-shaped hook 31. The door body cannot be pushed into the drying oven. When the horizontal upper part of the Z-shaped locking piece 25 is horizontally stuck at the corner of the L-shaped hook 31, the door body is locked with the inner door frame 16.

[0062] In the utility model, the lock catch 3 is fixed to the inner door frame 16 by bolts 4 and nuts 5, the locking device 2 is installed on the door body, and the gap is adjusted to ensure that after the installation is completed, the door body and the door frame are in a compressed and sealed state.

[0063] When the inspection door is in a closed state, the convex edge of the outer periphery of the opening of the rectangular cavity included in the inner door panel 1 covers the heat insulation device 6, and the door body and the heat insulation device 6 are in a flat pressed state. The door body presses the heat insulation device 6 to prevent heat leakage.

[0064] When the inspection door is in a closed state, the sealing material 17 arranged vertically and circumferentially along the inner door panel 1 is in close contact with the surface of the inner door frame 16 facing the door opening, and the sealing material 17 and the surface of the inner door frame 16 facing the door opening form a planar contact and compression, which makes the seal tighter and has a better sealing effect.

[0065] When the inspection door is in a closed state, the connecting rod 13 is close to the outer surface of the drying furnace body.

[0066] When the inspection door needs to be opened, the handle 21 connected to the door panel 8 is rotated clockwise or counterclockwise, and the horizontal upper part of the Z-shaped locking piece 25 rotates to a vertical state and is no longer stuck at the corner of the L-shaped hook 31. At this time, the handle 21 is pulled, and the door body rotates around the intermediate shaft 12. At the same time, the rotating support 15 rotates around the connecting shaft between the horizontal plate of the L-shaped bracket 14 and the boss 1501. The connecting rod 13 rotates along with the rotating support 15, and the end of the connecting rod 13 connected to the intermediate shaft 12 rotates away from the drying furnace body, and the inspection door is opened.

[0067] Since there is clearance fit between the intermediate shaft 12 and the bracket 11, and there is also clearance fit between the rotating support 15 and the bracket 14, after the door body is installed, the door body will rotate around the intermediate shaft 12 and the rotating support 15 as the two fulcrums, so that the door body can be opened and closed horizontally.

[0068] Finally, it should be noted that the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The above description is only the preferred embodiment of the utility model and is not used to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flat opening inspection door for a drying furnace in a coating workshop, comprising an inner door frame (16) and a door body, wherein the inner door frame (16) is mounted on a drying furnace body, the door body and the inner door frame (16) are movably connected via a rotating device, a locking device (2) is mounted on the door body, and a lock catch (3) is mounted on the inner door frame, wherein: A heat insulating device (6) is arranged on the surface of the inner door frame (16) facing the inner door panel (1), and the door body comprises an inner door panel (1), an outer door frame (7), a heat insulating material (18), an outer door panel (9), and a connecting door panel (8); the inner door panel (1) and the outer door panel (9) are respectively connected to the two sides of the outer door frame (7); the connecting door panel (8) is arranged on the outer surface of the outer door panel (9), and the inner door panel (1) and the outer door panel (9) both comprise a rectangular cavity, and the openings of the cavities of the inner door panel (1) and the outer door panel (9) are both facing the outer door frame (7), and the heat insulating material (18) is accommodated in the cavity, and the sealing material (17) is arranged vertically and circumferentially along the outer surface of the cavity of the inner door panel (1).

2. The flat opening inspection door for a drying furnace in a coating workshop according to claim 1, characterized in that: The outer periphery of the opening of the rectangular cavity of the inner door panel (1) is provided with a continuous convex edge, the convex edge and the opening of the cavity form a rectangular frame, and a plurality of bolt holes are arranged at intervals on the convex edge; the top surface, the bottom surface and the outer surfaces of the left and right sides of the rectangular cavity included in the inner door panel (1) are provided with continuous grooves, and the sealing material (17) is arranged in the grooves, and the sealing material (17) protrudes from the grooves.

3. The flat opening inspection door for a drying furnace in a coating workshop according to claim 1, characterized in that: The outer door panel (9) includes a rectangular cavity, the opening of the cavity faces the outer door frame (7), the cavity contains a heat-insulating material (18), the outer surface of the bottom of the cavity is provided with a continuous convex edge, the convex edge and the outer surface of the bottom of the outer door panel cavity form a rectangular plate, and a plurality of bolt holes are arranged on the convex edge at intervals; one side of the outer door panel (9) is the heat-insulating material (18), and the other side of the outer door panel (9) is the connecting door panel (8), and the connecting door panel (8) covers the outer surface of the bottom of the cavity of the outer door panel (9) and the convex edge of the outer surface of the bottom.

4. The flat opening inspection door for a drying furnace in a coating workshop according to claim 1, characterized in that: The inner door panel (1) is provided with a plurality of bolt holes on the convex edge of the outer opening of the cavity, the outer door frame (7) is provided with a plurality of bolt holes at intervals, the outer door panel (9) is provided with a plurality of bolt holes on the convex edge of the outer surface of the cavity bottom, and the connecting door panel (8) is provided with a plurality of bolt holes. The bolt holes on the inner door panel (1), the outer door frame (7), the outer door panel (9), and the connecting door panel (8) correspond to each other. The bolts pass through the bolt holes on the inner door panel (1), the outer door frame (7), the outer door panel (9), and the connecting door panel (8) in sequence. The inner door panel (1), the outer door frame (7), the outer door panel (9), and the connecting door panel (8) are fixed together by bolts and nuts to form a door body. When the four are fixed together, the thermal insulation material (18) is sandwiched between the inner door panel (1) and the outer door panel (9).

5. The flat opening inspection door for a drying furnace in a coating workshop according to claim 1, characterized in that: The rotating device comprises an intermediate bracket (11), an intermediate shaft (12), a connecting rod (13), an L-shaped bracket (14), and a rotating support (15); the intermediate bracket (11) is arranged on the connecting door panel (8); one end of the intermediate shaft (12) is loosely matched with the intermediate bracket (11), and the other end is connected to one end of the connecting rod (13); the other end of the connecting rod (13) is connected to the rotating support (15); one side of the L-shaped bracket (14) is arranged on the outer surface of the drying furnace body, and the other side is connected to one end of the connecting shaft; the other end of the connecting shaft is loosely matched with one end of the rotating support (15).

6. The flat opening inspection door for a drying furnace in a coating workshop according to claim 5, characterized in that: An L-shaped intermediate bracket (11) is installed at the middle part of the upper end and the middle part of the lower end of the outer surface of the connecting door panel (8), and the L-shaped intermediate bracket (11) includes an integrally formed horizontal plate and a vertical plate. The vertical plate is fixed on the connecting door panel (8), and the horizontal plate protrudes from the surface of the connecting door panel (8). A circular hole is arranged on the horizontal plate, and one end of the intermediate shaft (12) is loosely matched with the circular hole on the horizontal plate, and the other end of the intermediate shaft (12) is inserted into one end of the connecting rod (13).

7. The flat opening inspection door for a drying furnace in a coating workshop according to claim 5, characterized in that: The rotating support (15) is connected between two connecting rods (13), the two connecting rods (13) are arranged up and down and the two connecting rods (13) are parallel, the rotating support (15) is a vertically arranged straight rod, the upper end of the rotating support (15) is connected to one end of a connecting rod (13) located above, and the lower end of the rotating support (15) is connected to one end of a connecting rod (13) located below, and the other ends of the two connecting rods (13) are both arranged to be cylindrical, and one end of the intermediate shaft (12) is inserted into the cylindrical body; the top and bottom ends of the rotating support (15) each have a boss (1501).

8. The flat opening inspection door for a drying furnace in a coating workshop according to claim 5, characterized in that: An L-shaped bracket (14) is provided at the connection between the connecting rod (13) and the rotating support (15), the vertical plate of the L-shaped bracket (14) is fixed on the outer surface of the drying furnace body, the horizontal plate of the L-shaped bracket (14) covers the boss (1501), the connecting shaft is in a vertical state, one end of the connecting shaft is connected to the horizontal plate of the L-shaped bracket (14), and the other end of the connecting shaft is inserted into the boss (1501), and the connecting shaft and the boss (1501) are clearance-matched.

9. The flat opening inspection door for a drying furnace in a coating workshop according to claim 1, characterized in that: The lock buckle (3) is L-shaped, one side of the lock buckle (3) is provided with a bolt hole, and the end of the other side of the lock buckle (3) is provided with an L-shaped hook (31); the side of the lock buckle (3) with the bolt hole is fixed to the side of the inner door frame (16) facing the inside of the drying furnace, the bottom of the other side of the lock buckle (3) is connected to the side of the lock buckle (3) with the bolt, the top of the other side of the lock buckle (3) faces the inside of the drying furnace, and the other side of the lock buckle (3) is flush with the left side or right side of the inner door frame (16) facing the door opening, and multiple lock buckles (3) are arranged at intervals on the side of the left inner door frame or the right inner door frame facing the inside of the drying furnace; when the lock buckle (3) is installed on the inner door frame, the hook (31) is inverted L-shaped.

10. The flat opening inspection door for a drying furnace in a coating workshop according to claim 1, characterized in that: The locking device (2) comprises a rotating shaft (23), one end of the rotating shaft (23) passes through the door plate (8) and is connected to the handle (21), and the other end of the rotating shaft (23) passes through the inner door plate (1) and is connected to the locking plate (25), and when the handle (21) is turned, the rotating shaft (23) rotates around the door body; The locking piece (25) is Z-shaped, and the horizontal bottom of the Z-shape is connected to the second gasket (24). When the inspection door is in a closed state, the horizontal upper part of the Z-shaped locking piece (25) is in a horizontal state and is stuck at the corner of the inverted L-shaped hook (31) to lock the door body and the inner door frame (16); when the inspection door is opened, the handle (21) is turned, and the horizontal upper part of the Z-shaped locking piece (25) rotates to a vertical state and is no longer stuck at the corner of the L-shaped hook (31).

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