Automatic fire blocking door device for entrance and exit of narrow-space kiln

Abstract

The utility model provides an automatic fire blocking door device for an entrance and exit of a narrow-space kiln. The automatic fire blocking door device is arranged at a feeding port and / or a discharging port of the kiln. Comprising a kilneye support, a fireproof door structure and a driving mechanism. The fireproof door structure comprises a door frame, a left door assembly and a right door assembly. The door frame is arranged on the kiln opening bracket; each of the left door assembly and the right door assembly comprises more than two layers of movable door plates; wherein one layer of movable door plate is an active door plate, and the other movable door plates are passive door plates; door rails are respectively arranged at the upper part and the lower part of the door frame; the driving door plates of the left door assembly and the right door assembly are connected with the driving mechanism, and the driven door plates are connected with the adjacent driven door plates or the driving door plates through linkage structures, so that the fireproof door structure is closed or opened. The device can solve the technical problem that a large amount of heat energy in the kiln is dissipated outwards from the feeding port or the discharging port of the kiln, reduces emission, saves energy, and can be suitable for being used in a narrow installation space.

Description

Technical Field

[0001] The utility model relates to the technical field of kilns, and more specifically, to an automatic fire door device for the inlet and outlet of a narrow-space kiln. Background Art

[0002] A high-temperature continuous furnace is a high-temperature heat treatment device for continuous production, which is famous for the high productivity and efficiency of continuous processing, and has the advantages of high production capacity, low energy consumption, good product consistency, and low manual labor intensity, and is widely used in the process treatment field of metals or other materials.

[0003] At present, when the high-temperature continuous furnace is working, the furnace door is not closed, and the high-temperature heat energy in the furnace continuously diffuses outwards, resulting in a large amount of heat energy loss, which is not conducive to energy efficiency and cost control.

[0004] If an automatically openable and closable fire door can be set at the inlet and outlet of the high-temperature continuous furnace and automatically closed when there is no material to enter the kiln, it is one of the ideal solutions; due to the long length of the high-temperature continuous furnace, generally multiple furnaces are arranged side by side, and the installation space left outside the furnace door is limited; however, the existing furnace doors with flipping or lifting opening methods all require a large installation space and cannot be applied to narrow installation spaces.

[0005] Therefore, there is an urgent need to design an automatic fire door device that can be opened or closed according to the incoming material situation and can be used in a narrow installation space. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an automatic fire door device for the inlet and outlet of a narrow-space kiln; this automatic fire door device can be opened or closed according to the incoming material situation, solve the technical problem of a large amount of heat energy in the kiln interior leaking out from the inlet or outlet of the kiln, reduce emissions and save energy, and can be used in a narrow installation space.

[0007] To achieve the above object, the utility model is realized by the following technical solutions: A self-closing fire door device for narrow space furnace inlets and outlets is provided at the furnace inlet and / or outlet; it includes a furnace mouth support, a fire door structure, and a driving mechanism for driving the fire door structure to open or close; the fire door structure includes a door frame, a left door assembly, and a right door assembly; the door frame is arranged on the furnace mouth support; both the left door assembly and the right door assembly include more than two layers of movable door panels; one layer of the movable door panel is the active door panel, and the rest of the movable door panels are passive door panels; the upper and lower parts of the door frame are respectively provided with door rails for guiding the sliding of the active door panel and the passive door panel; the active door panels of the left door assembly and the right door assembly are respectively connected to the driving mechanism to slide along the door rails, and the passive door panels are respectively connected to the adjacent passive door panels or active door panels through a linkage structure to slide along the door rails, so that the left door assembly and the right door assembly are closed to realize the closing of the fire door structure, or a material inlet and outlet with an adjustable width is left between the left door assembly and the right door assembly to realize the opening of the fire door structure.

[0008] The self-closing fire door device of the utility model is arranged at the furnace inlet or outlet, and its working principle is: when the material reaches the furnace inlet or outlet, the driving mechanism of the self-closing fire door device moves the active door panel of the left door assembly / right door assembly to the left / right, and drives the passive door panel to move to the left / right through the linkage structure, so as to realize the opening of the self-closing fire door device, and enable the material to enter the furnace or be sent out of the furnace; when no material reaches the furnace inlet or outlet, the driving mechanism moves the active door panel of the left door assembly / right door assembly to the right / left, and drives the passive door panel to move to the right / left through the linkage structure, so as to realize the closing of the self-closing fire door device; in addition, the opening amplitude of the fire door structure can also be adjusted by setting the stroke of the driving mechanism according to the width of the material.

[0009] The self-closing fire door device of the utility model can solve the technical problem that a large amount of heat energy inside the furnace is dissipated outward from the furnace inlet or outlet; it can be opened, closed, and adjusted according to the incoming material situation, which can reduce emissions and save energy; the self-closing fire door device of the utility model can also adapt to the narrow installation space of the furnace inlet or outlet, and can be opened or closed conveniently, safely and reliably; it can be applied to the upgrading and transformation of existing furnaces, and can also be applied to the structural design of new furnaces.

[0010] Preferably, the linkage structure refers to a longitudinally arranged rib structure;

[0011] When the passive door panels of the left door assembly and the right door assembly are respectively one layer, the rib structures are respectively arranged on the adjacent surfaces of the passive door panels and the active door panels;

[0012] When the passive door panels of the left door assembly and the right door assembly are each two or more layers, the rib structures are respectively provided on the adjacent surfaces of the passive door panel and the active door panel, and on the adjacent surfaces of two adjacent layers of passive door panels.

[0013] The rib structure can effectively and reliably push the passive door panel to open or close.

[0014] Preferably, the left door assembly and the right door assembly adopt one of the following two schemes:

[0015] Scheme 1: Accommodating spaces for accommodating the passive door panel and the active door panel are respectively provided on both sides of the door frame, so that in the open state of the fireproof door structure, the passive door panel and the active door panel are superposed together, and the passive door panel and the active door panel are respectively partially or completely moved into the accommodating spaces on both sides of the door frame;

[0016] Scheme 2: The left door assembly and the right door assembly also each include a fixed door panel; in the closed state of the fireproof door structure, the fixed door panel of the left door assembly is located on the leftmost side; the fixed door panel of the right door assembly is located on the rightmost side; in the open state of the fireproof door structure, the fixed door panel, the passive door panel and the active door panel are superposed together, and the fixed door panel, the passive door panel and the active door panel are arranged in sequence from the side close to the heat treatment area of the kiln to the side far from the heat treatment area.

[0017] Preferably, the left door assembly and the right door assembly are symmetrical to each other.

[0018] Preferably, in the open state of the fireproof door structure, the maximum adjustable width of the material inlet and outlet left between the left door assembly and the right door assembly ≥ the width of the kiln inlet or outlet. When the automatic fireproof door device is arranged at the kiln inlet, the maximum adjustable width of the material inlet and outlet left between the left door assembly and the right door assembly ≥ the width of the kiln inlet; when the automatic fireproof door device is arranged at the kiln outlet, the maximum adjustable width of the material inlet and outlet left between the left door assembly and the right door assembly ≥ the width of the kiln outlet; it can ensure that the fireproof door structure does not affect the normal conveying of materials.

[0019] Preferably, an induction module for detecting whether the material arrives is provided on the kiln mouth bracket; the induction module is signal-connected to the driving mechanism. The induction module can detect the material and provide a basis for automatically opening or closing the fireproof door structure.

[0020] Preferably, the induction module is a blowing probe assembly.

[0021] Preferably, the driving mechanism includes a motor, a screw-nut transmission mechanism driven by the motor, and two connecting blocks; the screw-nut transmission mechanism includes a positive and negative thread integrated screw, and two nut assemblies respectively driven by the positive thread or the negative thread of the positive and negative thread integrated screw; the two nut assemblies are respectively connected to the active door panels of the left door assembly and the right door assembly through the two connecting blocks.

[0022] Preferably, a stroke detection module for detecting whether the stroke of the driving mechanism reaches a limit position is provided on the kiln mouth bracket; the stroke detection module is signal-connected to the driving mechanism.

[0023] Preferably, the driving mechanism and the stroke detection module are respectively located above the side of the fire damper structure away from the heat treatment area of the kiln. The installation positions of the driving mechanism and the stroke detection module can prevent the driving mechanism and the stroke detection module from being directly impacted by the high-temperature gas in the furnace and work at a normal ambient temperature, ensuring the normal use of the electrical appliances and extending their service life.

[0024] Preferably, the stroke detection module includes four stroke switches and two handle assemblies; one ends of the two handle assemblies are respectively connected to two connecting blocks; the other ends of the two handle assemblies slide in the chute of the kiln mouth bracket; the four stroke switches are respectively used to detect whether each handle assembly reaches the left limit position or the right limit position. The four stroke switches are respectively set according to the left limit position and the right limit position of the two handle assemblies; when any one of the stroke switches is touched, the driving mechanism stops immediately; with multiple protections, it can ensure the safe and reliable operation of the automatic fire damper device.

[0025] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0026] 1. The automatic fire damper device of the utility model can solve the technical problem of a large amount of heat energy in the kiln leaking out from the charging port or the discharging port of the kiln; it can be opened when the material arrives for the material to pass through, or closed when there is no material to enter the kiln, which can reduce emissions and save energy;

[0027] 2. The automatic fire damper device of the utility model can also adapt to the narrow installation space of the charging port or the discharging port of the kiln, and can be opened or closed conveniently, safely and reliably; it can be applied to the upgrading and transformation of existing kilns, and can also be applied to the structural design of new kilns;

[0028] 3. For the automatic fire damper device of the utility model, the linkage structure arranged on the passive door panel and the active door panel can effectively and reliably push the passive door panel to open or close;

[0029] 4. The automatic fire damper device of the utility model can operate safely and reliably and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is one of the structural schematic diagrams of the automatic fire damper device at the entrance and exit of the narrow-space kiln of the utility model in the closed state;

[0031] Figure 2It is the second structural schematic diagram of the automatic fire damper device at the entrance and exit of the narrow-space kiln furnace of the present utility model in the closed state;

[0032] Figure 3 It is the third structural schematic diagram of the automatic fire damper device at the entrance and exit of the narrow-space kiln furnace of the present utility model in the closed state;

[0033] Figure 4 It is the fourth structural schematic diagram of the automatic fire damper device at the entrance and exit of the narrow-space kiln furnace of the present utility model in the closed state;

[0034] Figure 5 is Figure 4 the sectional view of C-C in;

[0035] Figure 6 It is the structural schematic diagram of the automatic fire damper device at the entrance and exit of the narrow-space kiln furnace of the present utility model in the open state;

[0036] Among them, 1 is the kiln mouth support, 2 is the motor, 3 is the lead screw nut transmission mechanism, 4 is the door frame, 5 is the left door assembly, 6 is the right door assembly, 7 is the travel switch, 8 is the bearing, 9 is the rib structure, 10 is the handle assembly, 11 is the coupling structure, 12 is the dust-proof sealing assembly, 13 is the door rail, 14 is the induction module, 15 is the chute, 16 is the fixed door panel, 17 is the passive door panel, and 18 is the active door panel. Specific embodiments

[0037] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Embodiment 1

[0039] An automatic fire damper device for the entrance and exit of a narrow-space kiln furnace in this embodiment is arranged at the feeding port and / or discharging port of the kiln furnace; as Figures 1 to 6 shown, it includes a kiln mouth support 1, a fire damper structure, and a driving mechanism for driving the fire damper structure to open or close.

[0040] An induction module 14 for detecting whether the material arrives is arranged on the kiln mouth support 1; the induction module is signal-connected to the driving mechanism. The induction module preferably adopts a blowing probe assembly. The induction module can detect the material and provide a basis for automatically opening or closing the fire damper structure.

[0041] The fire damper structure includes a door frame 4, a left door assembly 5, and a right door assembly 6. The door frame 4 is arranged on the kiln mouth support 1; door rails 13 are respectively arranged on the upper and lower parts of the door frame 4.

[0042] The left door assembly 5 and the right door assembly 6 are preferably symmetrical to each other. Both the left door assembly 5 and the right door assembly 6 include a fixed door panel and more than two movable door panels; in the present utility model, the movable door panels of the left door assembly 5 and the right door assembly 6 are both two layers. Among them, one layer of movable door panel is the active door panel 18, and one layer of movable door panel is the passive door panel 17. In the open state of the fireproof door structure, the fixed door panel 16, the passive door panel 17 and the active door panel 18 are stacked together, and the fixed door panel 16, the passive door panel 17 and the active door panel 18 are arranged in sequence from the side close to the heat treatment area of the kiln to the side far from the heat treatment area of the kiln; in the closed state of the fireproof door structure, the fixed door panel 16 of the left door assembly 5 is located on the leftmost side; the fixed door panel 16 of the right door assembly 6 is located on the rightmost side.

[0043] The active door panels 18 of the left door assembly 5 and the right door assembly 6 are respectively connected to the driving mechanism to slide along the door rail, and the passive door panels 17 are respectively connected to the adjacent passive door panels 17 or active door panels 18 through a linkage structure to slide along the door rail, so that the left door assembly 5 and the right door assembly 6 are closed to realize the closing of the fireproof door structure, or a material inlet and outlet with an adjustable width is left between the left door assembly 5 and the right door assembly 6 to realize the opening of the fireproof door structure.

[0044] In the open state of the fireproof door structure, the maximum adjustable width of the material inlet and outlet left between the left door assembly 5 and the right door assembly 6 ≥ the width of the material inlet or outlet of the kiln; it can ensure that the fireproof door structure does not affect the normal conveying of materials.

[0045] The linkage structure refers to a convex strip structure 9 arranged longitudinally; the convex strip structures 9 are respectively arranged on the adjacent surfaces of the passive door panel 17 and the active door panel 18. The convex strip structure 9 can effectively and reliably push the passive door panel 17 to open or close.

[0046] The driving mechanism includes a motor 2, a screw-nut transmission mechanism 3 driven by the motor 2, and two connecting blocks; the screw-nut transmission mechanism 3 includes a positive and negative thread integrated screw, and two nut assemblies respectively driven by the positive thread or the negative thread of the positive and negative thread integrated screw; both ends of the screw-nut transmission mechanism 3 are connected to the kiln mouth support 1 through bearings 8 and are connected to the motor 2 through a coupling structure 11. The two nut assemblies are respectively connected to the active door panels 18 of the left door assembly 5 and the right door assembly 6 through two connecting blocks.

[0047] A travel detection module for detecting whether the travel of the drive mechanism reaches a limit position is provided on the kiln mouth support 1; the travel detection module is signal-connected to the drive mechanism. The travel detection module includes four travel switches 7 and two handle assemblies 10; one ends of the two handle assemblies 10 are respectively connected to two connection blocks; the other ends of the two handle assemblies 10 slide in the chute 15 of the kiln mouth support 1 respectively; the four travel switches 7 are respectively used to detect whether each handle assembly 10 reaches the left limit position or the right limit position. The four travel switches 7 are respectively set according to the left limit position and the right limit position of the two handle assemblies 10; when any one of the travel switches 7 is touched, the drive mechanism stops immediately; with multiple protections, it can ensure the safe and reliable operation of the automatic fire damper device.

[0048] The drive mechanism and the travel detection module are respectively located above the side of the fire damper structure away from the heat treatment area of the kiln. The installation positions of the drive mechanism and the travel detection module can enable the drive mechanism and the travel detection module to avoid being directly impacted by the high-temperature gas in the furnace and work at a normal ambient temperature, ensuring the normal use of the electrical appliances and extending their service life.

[0049] The automatic fire damper device of the present utility model is arranged at the feeding port or the discharging port of the kiln. Its working principle is: when the material reaches the feeding port or the discharging port of the kiln, the drive mechanism of the automatic fire damper device moves the active door panel 18 of the left door assembly 5 / right door assembly 6 to the left / right, and drives the passive door panel 17 to move to the left / right through the linkage structure, thereby realizing the opening of the automatic fire damper device and enabling the material to enter or exit the kiln; when no material reaches the feeding port or the discharging port of the kiln, the drive mechanism moves the active door panel 18 of the left door assembly 5 / right door assembly 6 to the right / left, and drives the passive door panel 17 to move to the right / left through the linkage structure, thereby realizing the closing of the automatic fire damper device; in addition, the opening amplitude of the fire damper structure can also be adjusted by setting the travel of the drive mechanism according to the material width; the material width can be obtained by existing technologies such as visual sensing technology or database reading; setting the travel of the drive mechanism according to the material width can also adopt existing technologies.

[0050] The automatic fire damper device of the present utility model can solve the technical problem of a large amount of heat energy in the kiln interior being dissipated outward from the feeding port or the discharging port of the kiln; it can be opened, closed and adjusted according to the material feeding situation, which can reduce emissions and save energy; the automatic fire damper device of the present utility model can also adapt to the narrow installation space at the feeding port or the discharging port of the kiln, and can be opened or closed conveniently, safely and reliably; it can be applied to the upgrading and transformation of existing kilns, and can also be applied to the structural design of new kilns.

[0051] Embodiment 2

[0052] In this embodiment, a self - closing fire door device for the entrance and exit of a narrow - space kiln is different from that in Embodiment 1 in that: in this embodiment, neither the left door assembly nor the right door assembly is provided with a fixed door panel; on both sides of the door frame, accommodation spaces for accommodating the passive door panel and the active door panel are respectively provided, so that in the open state of the fire door structure, the passive door panel and the active door panel are superposed together, and the passive door panel and the active door panel are respectively partially or completely moved into the accommodation spaces on both sides of the door frame.

[0053] The remaining structure of this embodiment is the same as that in Embodiment 1.

[0054] Embodiment 3

[0055] In this embodiment, a self - closing fire door device for the entrance and exit of a narrow - space kiln is different from that in Embodiment 1 in that: in this embodiment, the movable door panels of both the left door assembly and the right door assembly are more than three layers, for example, three layers, four layers, five layers, or even more; one of the movable door panels is an active door panel, and the remaining movable door panels are passive door panels. The convex - strip structures 9 are respectively arranged on the adjacent surfaces of the passive door panel 17 and the active door panel 18, and on the adjacent surfaces of two adjacent layers of the passive door panels 17.

[0056] The remaining structure of this embodiment is the same as that in Embodiment 1 or Embodiment 2.

[0057] The above - mentioned embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above - mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. An automatic fire-blocking door device for a narrow space kiln entrance and exit, characterized by: It is arranged at the material inlet and / or discharge port of the kiln; it includes a kiln mouth bracket, a fire-blocking door structure, and a driving mechanism for driving the fire-blocking door structure to open or close; the fire-blocking door structure includes a door frame, a left door assembly and a right door assembly; the door frame is arranged on the kiln mouth bracket; the left door assembly and the right door assembly each include more than two layers of movable door panels; one layer of the movable door panels is an active door panel, and the other movable door panels are passive door panels; the upper and lower parts of the door frame are respectively provided with door rails for guiding the active door panels and the passive door panels to slide; the active door panels of the left door assembly and the right door assembly are respectively connected to the driving mechanism to slide along the door rails, and the passive door panels are respectively connected to the adjacent passive door panels or active door panels through the linkage structure to slide along the door rails, so that the left door assembly and the right door assembly are closed to realize the closing of the fire-blocking door structure, or a material inlet and outlet with adjustable width is left between the left door assembly and the right door assembly to realize the opening of the fire-blocking door structure.

2. The automatic fire-blocking door device for the entrance and exit of a narrow space kiln according to claim 1 is characterized by: The linkage structure refers to a longitudinally arranged convex strip structure; When the passive door panels of the left door assembly and the right door assembly are respectively one layer, the convex strip structure is respectively arranged on adjacent surfaces of the passive door panel and the active door panel; When the passive door panels of the left door assembly and the right door assembly have more than two layers respectively, the convex strip structures are respectively arranged on adjacent surfaces of the passive door panel and the active door panel, and adjacent surfaces of two adjacent layers of passive door panels.

3. The automatic fire-blocking door device for a narrow space kiln entrance and exit according to claim 1 is characterized in that: The left door assembly and the right door assembly adopt one of the following two solutions: Solution 1: The two sides of the door frame are respectively provided with accommodation spaces for accommodating the passive door panel and the active door panel, so that when the fire-blocking door structure is opened, the passive door panel and the active door panel are overlapped together, and the passive door panel and the active door panel are respectively partially or completely moved to the accommodation spaces on both sides of the door frame; Option 2: The left door assembly and the right door assembly also include fixed door panels; when the fire-damping door structure is closed, the fixed door panel of the left door assembly is located at the leftmost side; the fixed door panel of the right door assembly is located at the rightmost side; when the fire-damping door structure is open, the fixed door panel, the passive door panel and the active door panel are overlapped together, and the fixed door panel, the passive door panel and the active door panel are arranged in sequence from the side close to the heat treatment zone of the kiln to the side away from the heat treatment zone.

4. The automatic fire-blocking door device for a narrow space kiln entrance and exit according to claim 1 is characterized in that: The left door assembly and the right door assembly are symmetrical to each other.

5. The automatic fire-blocking door device for the entrance and exit of a narrow space kiln according to claim 1 is characterized in that: When the fire-blocking door structure is in the open state, the maximum adjustable width of the material inlet and outlet reserved between the left door assembly and the right door assembly is ≥ the width of the kiln inlet or outlet.

6. The automatic fire-blocking door device for a narrow space kiln entrance and exit according to claim 1 is characterized in that: The kiln mouth bracket is provided with a sensing module for detecting whether the material has arrived; the sensing module is connected with the driving mechanism signal.

7. The automatic fire-blocking door device for a narrow space kiln entrance and exit according to claim 1 is characterized in that: The driving mechanism includes a motor, a screw-nut transmission mechanism driven by the motor, and two connecting blocks; the screw-nut transmission mechanism includes an integrated screw with positive and negative threads, and two nut assemblies driven by the positive threads or negative threads of the integrated screw with positive and negative threads respectively; the two nut assemblies are connected to the active door panels of the left door assembly and the right door assembly respectively through two connecting blocks.

8. The automatic fire-blocking door device for a narrow space kiln entrance and exit according to claim 7 is characterized in that: The kiln mouth bracket is provided with a stroke detection module for detecting whether the driving mechanism stroke reaches a defined position; the stroke detection module is connected with the driving mechanism signal.

9. The automatic fire-blocking door device for a narrow space kiln entrance and exit according to claim 8 is characterized in that: The driving mechanism and the travel detection module are respectively located above the side of the fire-blocking door structure away from the heat treatment zone of the kiln.

10. The automatic fire-blocking door device for a narrow space kiln entrance and exit according to claim 8, characterized in that: The stroke detection module includes four stroke switches and two handle assemblies; one end of the two handle assemblies is respectively connected to two connecting blocks; the other ends of the two handle assemblies slide in the slide grooves of the kiln mouth bracket; the four stroke switches are respectively used to detect whether each handle assembly reaches the left limited position or the right limited position.

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