Special stainless steel heat-preservation airtight door for granary

Abstract

The utility model discloses a stainless steel heat preservation airtight door special for a granary, which comprises a door frame, a hinge, a left door leaf and a right door leaf, and the hinge is fixed on the door frame and used for connecting the left door leaf and the right door leaf with the door frame. The door frame, the hinges, the frames of the left door leaf and the right door leaf and the panels are all made of stainless steel, and heat insulation flame-retardant materials are arranged in the panels of the left door leaf and the right door leaf. Two circles of sealing strips are respectively adhered to the peripheries of the left and right doors to form inner and outer double-layer sealing; the bevel gear transmission locking device is installed on the left door leaf of the left door leaf and the right door leaf of the right door leaf, and the worm and worm gear transmission locking device is installed on the right door leaf to form double locking of the two door leaves. The utility model solves the problems of poor heat preservation sealing performance, corrosion after long-time use and complex opening in the prior art, and is a necessary product in the existing grain storage industry.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain storage and heat preservation engineering, and specifically relates to a special stainless steel heat-insulating closed door for grain storage. Background Art

[0002] At present, most grain storage warehouses in the domestic grain industry, whether shallow circular warehouses or flat warehouses, must meet two structural requirements to ensure safe grain storage: (1) airtightness requirements, which must meet the national standard for grain warehouse airtightness half-life indicators; (2) thermal insulation requirements, the warehouse walls, doors, windows, roofs and other structural parts must meet the corresponding heat transfer resistance indicators.

[0003] Compared with warehouse openings such as warehouse holes, windows, and vents, warehouse doors have a larger area and are more prone to air and heat exchange inside and outside the warehouse, so higher insulation and sealing measures are required for the doors.

[0004] Traditional insulated closed doors are mostly made of galvanized profiles for the frame, galvanized channel steel or square steel for the door frame, and the door surface is generally made of color steel plate, lined with polyurethane insulation board. This structure and material are difficult to meet the requirements of air tightness and insulation in warehouses, and are prone to rust after long-term use. The locking device is a container galvanized pull rod lock, which is cumbersome to operate and inflexible to open and close. Therefore, for the grain storage industry, there is an urgent need for an alternative product for insulated closed doors that can solve the above problems. Summary of the invention

[0005] In view of the shortcomings and deficiencies in the prior art, the utility model aims to provide a stainless steel heat-insulating airtight door specially used for granaries.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The stainless steel insulated closed door specially used for granaries includes a door frame, hinges, and left and right doors. The hinges are fixed on the door frame and are used to connect the left and right doors and the door frame. The door frame, hinges, frames and panels of the left and right doors are all made of stainless steel, and the panels of the left and right doors are built with thermal insulation and flame retardant materials. Two circles of sealing strips are pasted around the left and right doors to form an inner and outer double-layer seal. The left door of the left and right doors is equipped with a bevel gear transmission locking device, and the right door is equipped with a worm gear transmission locking device, so that the two doors are double locked to form double insurance.

[0008] Furthermore, the left leaf door has the bevel gear transmission locking device built in and the crank handle is external; the left leaf door also has two upper and lower transmission connecting rods built in, the inner ends of the two transmission connecting rods are respectively connected to the bevel gear transmission locking device, and the outer ends of the two transmission connecting rods are respectively provided with conical pins; the upper and lower door frames are respectively provided with pin holes, and the pin holes correspond to and match the conical pins, that is, the conical pins can be inserted into the pin holes. Furthermore, the bevel gear transmission locking device includes conical main bevel teeth, upper passive teeth, and lower passive teeth, the conical main bevel teeth are externally connected to the core shaft of the crank handle, the conical main bevel teeth are respectively connected inwardly to the upper passive teeth and the lower passive teeth, the upper passive teeth are connected to the upper transmission connecting rod, and the lower passive teeth are connected to the lower transmission connecting rod, the outer end of the transmission connecting rod is provided with a transmission nut, and the end of the transmission nut is provided with the conical pin, and the conical pin is telescoped up and down in the anti-rotation bracket fixed on the door frame and matched and inserted into the pin hole.

[0009] Furthermore, the right door has the worm gear transmission locking device built in and a corresponding crank handle externally; the right door also has two upper and lower transmission connecting rods built in, the inner ends of the two transmission connecting rods are respectively connected to the worm gear transmission locking device, and the outer ends of the two transmission connecting rods are respectively provided with cams, and the upper and lower door frames are respectively provided with limit blocks, which correspond to the cams.

[0010] Furthermore, the worm and worm gear transmission locking device includes a worm, a worm wheel and a rack telescopic lock, i.e. a key. The crank handle is connected to the worm, which is connected to the worm wheel, the transmission connecting rod and the cam in sequence. The cam rotates in the limit block, and the worm can be locked by the key.

[0011] Furthermore, the thermal insulation and flame retardant material is a B1 grade polyurethane thermal insulation board.

[0012] Furthermore, reinforcing ribs are installed inside the panels of the left and right doors.

[0013] Furthermore, the sealing strip is an EPDM sealing strip.

[0014] Furthermore, each column of the door frame is provided with a plurality of hinges, and the positions of the hinges are adjustable.

[0015] The advantages of the utility model are as follows:

[0016] (1) The materials of the existing insulated and sealed doors in the warehouse are mostly galvanized materials, which not only cannot meet the requirements of the sealed and thermally sealed performance in the warehouse, but also rust, wear and corrosion are serious after long-term use, affecting the appearance. In addition, the door leaf is bulky and not flexible and light to open. The utility model is a stainless steel insulated and sealed door specially designed for granaries, and its door frame, panel, etc. are all made of stainless steel, especially the panel is made of stainless steel material, which effectively makes up for the shortcomings of the existing technology, solves the problems of poor thermal insulation and sealing performance, rust and corrosion after long-term use, and complex opening in the existing technology, and is a must-have product in the existing grain storage industry.

[0017] (2) The utility model is a special stainless steel thermal insulation closed door for granaries. The left door has a built-in bevel gear transmission locking device and an external locking mechanism crank. The crank can be turned to drive the upper and lower conical pins of the bevel gear transmission locking device to be inserted into the two pin holes of the upper and lower door frames respectively. The more the pins are inserted, the tighter they are, thereby pressing the left door; the right door has a built-in worm gear transmission locking device and an external crank. The crank can be turned to drive the upper and lower connecting rod cams of the worm gear transmission locking device to rotate in the two locking blocks on the upper and lower door frames respectively. The more the pins are inserted, the tighter they are, thereby pressing the right door, forming a double insurance.

[0018] (3) The utility model is a stainless steel heat-insulated closed door for granaries. Its door frame is made of stainless steel plates that are bent and welded and fixed to the embedded parts. Stainless steel casting hinges are fixed to the door frame, with multiple hinges on the left and right sides, and the position is adjustable to ensure that the door leaf does not sag after installation. The frame of the door leaf is made of stainless steel bending and edging, and the door core panel is a stainless steel thin plate with reinforcing ribs installed inside and built-in heat-insulating and flame-retardant materials. Two circles of sealing strips are pasted around the four sides of the door leaf to form a double-layer seal inside and outside to ensure airtightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front view of the structure of the utility model;

[0020] Figure 2 It is a top sectional view of the utility model;

[0021] Figure 3 It is a side sectional view of the utility model;

[0022] Figure 4 It is a cross-sectional view of the bevel gear transmission locking device;

[0023] Figure 5 It is the operating principle diagram of the bevel gear transmission locking device;

[0024] Figure 6 It is the operating principle diagram of the worm and worm gear transmission locking device;

[0025] Among them, 1- transmission connecting rod, 1a- transmission nut, 1b- conical latch, 1c- anti-rotation bracket; 2- left door, 3- right door, 4- door handle,

[0026] 5-bevel gear transmission locking device, 51-conical main bevel gear, 52-upper passive bevel gear, 53-lower passive bevel gear;

[0027] 6-worm and worm gear transmission locking device, 61-cam, 62-limiting block, 63-rack telescopic lock, 64-worm and worm gear;

[0028] 7-handle, 71-handle spindle, 8-thermal insulation board, 9-sealing strip, 10-upper and lower latch locking, 11-upper and lower cam pair locking, 12-door frame, 13-hinge. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figures 1 to 3 As shown, the stainless steel insulated closed door for granary of this embodiment includes a transmission connecting rod 1, a left door 2, a right door 3, a door handle 4, a bevel gear transmission locking device 5, a worm gear transmission locking device 6, a crank handle 7, an insulation board 8, a sealing strip 9, an upper and lower latch lock 10, an upper and lower cam pair lock 11, a door frame 12 and a hinge 13.

[0031] The door frame 12 is welded and fixed to the embedded parts of the wall around the door opening. The door frame 12 of this embodiment is set as a 3mm thick 304 stainless steel bent door frame.

[0032] Among them, the hinge 13 is fixed on the door frame 12 for connecting the door leaves (left door 2, right door 3) and the door frame 12.

[0033] Preferably, three hinges 13 are respectively arranged on the upright posts of the door frame 12, so that the left door 2 and the right door 3 can be ensured not to sag after installation. In addition, the position of the hinge 13 is adjustable.

[0034] In this embodiment, an adjustable stainless steel precision die-cast hinge is provided.

[0035] Among them, the frame of the door leaf (left door 2, right door 3) is made of 1.5mm thick 304 stainless steel plate bent and edged, the door leaf panel is 0.6mm thick 304 stainless steel plate sandwiched with 80mm thick thermal insulation and flame retardant material (i.e. thermal insulation board 8, such as B1 grade polyurethane thermal insulation board), and the door leaf panel has built-in reinforcing ribs.

[0036] Reinforcing ribs are installed inside the door leaf to increase the strength and rigidity of the door leaf.

[0037] The door leaf is built with 80mm thick B1 grade polyurethane thermal insulation board, so that the heat transfer resistance of the insulated closed door is not less than 0.5m2.k / w.

[0038] The 0.6mm thick 304 stainless steel of the door panel is both beautiful and durable.

[0039] Among them, two circles of sealing strips 9 are respectively pasted around the door leaf (left leaf door 2, right leaf door 3), which can form an inner and outer double-layer seal to ensure air tightness. The material of the two circles of sealing strips 9 in this embodiment is EPDM sealing strips.

[0040] Preferably, epoxy resin sealant is applied in the gap of the stainless steel heat-insulating sealed door for granary in this embodiment.

[0041] The installation process of the stainless steel thermal insulation closed door for granary in this embodiment is as follows:

[0042] First, the formed stainless steel door frame 12 is welded to the embedded parts of the closed door to make it firm and flat;

[0043] Then, three hinges 13 are fixed to the pillars on both sides of the door frame 12, and the two door leaves are fixed by hinges;

[0044] Finally, two circles of inner and outer sealing strips 9 are pasted around the door leaf to form an inner and outer double-layer seal to ensure air tightness.

[0045] The left door 2 has a built-in bevel gear transmission locking device 5 and an external crank handle 7; the left door 2 also has two built-in upper and lower transmission connecting rods 1, one end (inner end) of the two transmission connecting rods 1 is respectively connected to the bevel gear transmission locking device 5, and the other end (outer end) of the two transmission connecting rods 1 is respectively provided with a tapered latch 1b. The upper and lower door frames 12 are respectively provided with pin holes, and the pin holes correspond to the tapered latch 1b, that is, the tapered latch 1b can be inserted into the pin holes to achieve upper and lower latch locking 10.

[0046] Specifically, Figure 4 and Figure 5 As shown, the crank handle 7 is connected to the bevel gear transmission locking device 5 in the door leaf 2 through the crank handle core shaft 71. The bevel gear transmission locking device 5 includes a conical main bevel tooth 51, an upper passive bevel tooth 52, and a lower passive bevel tooth 53. The conical main bevel tooth 51 is connected to the crank handle core shaft 71 outwardly, and the conical main bevel tooth 51 is respectively connected to the upper passive bevel tooth 52 and the lower passive bevel tooth 53 inwardly. The upper passive bevel tooth 52 is connected to the upper transmission connecting rod 1, and the lower passive bevel tooth 53 is connected to the lower transmission connecting rod 1. The outer end of the transmission connecting rod 1 is provided with a transmission nut 1a, and the end of the transmission nut 1a is provided with a conical pin 1b. The conical pin 1b can be extended and retracted up and down in the anti-rotation bracket 1c. When the pin shaft of the conical pin 1b is extended, it can be matched and inserted into the pin hole of the bent door frame 12 to realize the upper and lower pin locking 10.

[0047] When in use, the crank handle 7 is rotated, and the conical main bevel teeth 51 of the bevel gear transmission locking device 5 drive the upper passive bevel teeth 52 and the lower passive bevel teeth 53 to rotate in opposite directions at the same time through the crank handle spindle 71; the upper and lower transmission connecting rods 1 are linked to position and rotate, and the upper and lower transmission nuts 1a are driven to position and rotate at the same time; the upper and lower conical latch pins 1b are extended and retracted up and down in the center hole of the anti-rotation bracket 1c to complete the opening or closing of the left door 2.

[0048] Among them, Figure 6As shown, the right door 3 has a built-in worm gear transmission locking device 6 and an external corresponding crank handle 7; the right door 3 also has two built-in upper and lower transmission connecting rods 1, one end (inner end) of the two transmission connecting rods 1 is respectively connected to the worm gear transmission locking device 6, and the other end (outer end) of the two transmission connecting rods 1 is respectively provided with a cam 61. The upper and lower door frames 12 are respectively provided with locking blocks (limiting blocks 62), and the locking blocks correspond to the cams 61, that is, the cams 61 can be pressed on the locking blocks to achieve the locking of the upper and lower cam pairs 11.

[0049] The connection and operation principle of the worm and worm gear transmission locking device 6 of this embodiment are as follows: rotate the crank handle 7 clockwise, and the crank handle 7 will drive the worm and worm wheel 64 in the worm and worm gear transmission locking device 6. Specifically, the rotation of the crank handle 7 will drive the worm of the worm and worm wheel 64, and the rotation of the worm is transmitted to the worm wheel. The rotation of the worm wheel drives the rotating transmission connecting rod 1, and the transmission connecting rod 1 is connected to the cam 61. That is, the rotation of the worm wheel drives the rotating transmission connecting rod 1 and the cam 61 to rotate in the limit block 62; when the cam 61 rotates into place in the limit block 62, the locking structure (rack telescopic lock 63-key) in the worm and worm gear transmission locking device 6 is opened, that is, the key is opened to lock the worm, and after the above operations are completed, the right door 3 can be locked and closed. When the right door 3 needs to be opened, the locking structure (rack telescopic lock 63 - key) in the worm gear locking device 6 is unlocked, the crank handle 7 is rotated counterclockwise, and the cam 61 is rotated out of the limit block 62, so that the right door 3 can be opened.

[0050] The closing process of the stainless steel heat-insulating closed door for granary in this embodiment is as follows:

[0051] When the crank handle 7 corresponding to the bevel gear transmission locking device 5 is rotated, the transmission connecting rod 1 of the bevel gear transmission locking device 5 can be driven to extend and retract, thereby driving the upper and lower conical latch pins 1b to be inserted into the two pin holes of the upper and lower door frames 12 respectively, and the more they are inserted, the tighter they are, thereby pressing the left door 2, and realizing the locking of the upper and lower latch pins 10;

[0052] When the handle 7 corresponding to the worm gear transmission locking device 6 is rotated, the upper and lower transmission connecting rods 1 of the worm gear transmission locking device 6 can be driven to extend and retract, thereby driving the upper and lower cams 61 to rotate in the two locking blocks on the upper and lower door frames 12 respectively, and the more they rotate, the tighter they become, thereby pressing the right door 3 to realize the locking of the upper and lower cam pairs 11.

[0053] Through the above-mentioned double insurance, the door leaf is finally closed and closely attached to the door frame 1, and the sealing of the two sealing strips 9 achieves the effect of airtight insulation.

[0054] Note: Turn the handle 7 clockwise to lock and counterclockwise to open.

[0055] The special stainless steel insulated and sealed door for granaries of this embodiment solves the problems of poor thermal insulation and sealing performance, rust and corrosion after long-term use, and complex opening in the prior art, and is an essential product in the existing grain storage industry.

[0056] The above description is only a preferred embodiment of the present invention and does not constitute a limitation on the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A stainless steel heat-insulating closed door for a granary, comprising a door frame, a hinge, and left and right doors. The hinge is fixed on the door frame and is used to connect the left and right doors and the door frame; it is characterized in that: The door frame, hinges, frames and panels of the left and right doors are all made of stainless steel, and the panels of the left and right doors are built with heat-insulating and flame-retardant materials; two circles of sealing strips are pasted around the left and right doors to form an inner and outer double-layer seal; the left door of the left and right doors is equipped with a bevel gear transmission locking device, and the right door is equipped with a worm gear transmission locking device, so as to form a double lock of the two doors; The bevel gear transmission locking device is provided with an external crank handle, and the left door is also provided with two upper and lower transmission connecting rods. The inner ends of the two transmission connecting rods are respectively connected to the bevel gear transmission locking device, and the outer ends of the two transmission connecting rods are respectively provided with conical pins; the upper and lower door frames are respectively provided with pin holes, and the pin holes correspond to the conical pins, that is, the conical pins can be inserted into the pin holes; the worm and worm gear transmission locking device is provided with a corresponding external crank handle, and the right door is also provided with two upper and lower corresponding transmission connecting rods. The inner ends of the two transmission connecting rods are respectively connected to the worm and worm gear transmission locking device, and the outer ends of the two transmission connecting rods are respectively provided with cams, and the upper and lower door frames are respectively provided with limit blocks, which correspond to the cams.

2. The stainless steel heat-insulating closed door for granary as claimed in claim 1, characterized in that: The bevel gear transmission locking device includes conical main bevel teeth, upper passive teeth, and lower passive teeth. The conical main bevel teeth are externally connected to the core shaft of the crank handle, and the conical main bevel teeth are internally connected to the upper passive teeth and the lower passive teeth respectively. The upper passive teeth are connected to the upper transmission connecting rod, and the lower passive teeth are connected to the lower transmission connecting rod. The outer end of the transmission connecting rod is provided with a transmission nut, and the end of the transmission nut is provided with the conical pin. The conical pin is telescoped up and down in an anti-rotation bracket fixed on the door frame and is matched and inserted into the pin hole.

3. The stainless steel heat-insulating closed door for granary as claimed in claim 1, characterized in that: The worm and worm gear transmission locking device includes a worm, a worm wheel and a rack telescopic lock, namely a key. The crank handle is connected to the worm, and the worm is connected to the worm wheel, the transmission connecting rod and the cam in sequence. The cam rotates in the limit block, and the worm can be locked by the key.

4. The stainless steel heat-insulating closed door for granary as claimed in any one of claims 1 to 3, characterized in that: The thermal insulation and flame retardant material is a B1 grade polyurethane thermal insulation board.

5. The stainless steel heat-insulating closed door for granary as claimed in any one of claims 1 to 3, characterized in that: Reinforcing ribs are installed inside the panels of the left and right doors.

6. The stainless steel heat-insulating closed door for granary as claimed in any one of claims 1 to 3, characterized in that: The sealing strip is an EPDM sealing strip.

7. The stainless steel heat-insulating closed door for granary as claimed in any one of claims 1 to 3, characterized in that: The upright posts of the door frame are each provided with a plurality of hinges, and the positions of the hinges are adjustable.

Images