Insertion plate type smoke isolation door

Abstract

The utility model discloses an inserting plate type smoke isolation door which comprises an inserting plate door shell and an inserting plate door, a driving mechanism for pulling and inserting the inserting plate door is arranged on the inserting plate door shell, the inserting plate door shell comprises a sealing door frame and a containing door frame for containing the pulled-out inserting plate door, and the two end faces of the sealing door frame are used for being connected and sealed with the inlet end and the outlet end of an annular flue. A long through hole for the slide plate gate to linearly move is formed in the partition vertical plate of the sealing door frame and the accommodating door frame; a flexible sealing ring is fixed to the inner wall of the sealing door frame, and an upward jacking structure is fixed to the bottom face of the insertion plate door and the insertion plate door shell, wherein the upward jacking structure automatically jacks the insertion plate door upwards when the insertion plate door is completely inserted into the sealing door frame, and the top face of the insertion plate door abuts against the flexible sealing ring for sealing. And the jacking structure comprises a plurality of pressing wheels and a plurality of bosses which are matched with the pressing wheels to jack the slide plate gate upwards. In the pulling or inserting process, the inserting plate door does not rub with a sealing piece in the sealing door frame, the structure is relatively simple, cost is relatively low, and sealing is tight.

Description

Technical Field

[0001] The utility model relates to the technical field of flue equipment in thermal power plants, in particular to a plug-in type flue gas isolation door. Background Art

[0002] Due to the need for regular and irregular inspection and maintenance of equipment, smoke isolation doors are installed between the smoke duct and other equipment in thermal power plants. Isolation doors, also known as partition doors, isolation doors or thermal insulation gate doors, are roughly divided into two types: plug-in doors and flap doors. The cross-section of the smoke duct or air duct of the plug-in door is circular, that is, the plug-in door has a circular door frame, but is generally rectangular, that is, a rectangular door frame is used with a rectangular door.

[0003] With the advancement of environmental protection projects such as desulfurization and denitrification in thermal power plants, flue gas isolation in this system equipment has always been a difficult problem. This is because there are a large number of toxic gases and high-temperature gases in the flue gas. If it is not closed tightly, it will cause great hidden dangers to personal safety.

[0004] There are many types of plug-in flue gas isolation doors in the prior art, with different structures. However, there are still some shortcomings. For example, some plug-in doors always collide with the seal in the sealing door frame during the withdrawal or insertion process, which causes friction, causing unnecessary interference and wear, affecting the service life of the seal, and posing a safety hazard of poor sealing. Some use multiple cylinders to drive cams and other mechanisms to lift or press down the sealing frame to achieve sealing, but the structure is relatively complex, and the equipment cost and energy consumption cost in the process of sealing and unsealing the isolation door are relatively high. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a plug-in type smoke isolation door which does not rub against the sealing member in the sealing door frame during the pulling or inserting process, has a relatively simple structure, is relatively low in cost and is tightly sealed.

[0006] The technical solution of the utility model is to provide a plug-in type smoke isolation door, including a plug-in door shell and a plug-in door, the plug-in door shell is provided with a driving mechanism for pulling out and inserting the plug-in door, the plug-in door shell includes a sealing door frame and a accommodating door frame for accommodating the pulled-out plug-in door, the two end surfaces of the sealing door frame are used to connect with and seal the inlet end and the outlet end of the annular flue, and the partition vertical plates between the sealing door frame and the accommodating door frame are provided with elongated through holes for linear movement of the plug-in door; a flexible sealing ring is fixed to the inner wall of the sealing door frame, and an upper top structure is fixed to the bottom surface of the plug-in door and the plug-in door shell, which, when the plug-in door is fully inserted into the sealing door frame, presses the plug-in door upward so that the top surface of the plug-in door presses against the flexible sealing ring for sealing.

[0007] After adopting the above structure, the plug-in type smoke isolation door of the utility model has the following advantages: since a flexible sealing ring or an annular flexible sealing ring tightly attached to the inner wall of the sealed door frame is fixed on the inner wall of the sealed door frame, an upper top structure is fixed on the bottom surface of the plug-in door and the plug-in door shell, which presses the plug-in door upward when the plug-in door is fully inserted into the sealed door frame, so that the top surface of the plug-in door is tightly pressed against the flexible sealing ring to form a seal. The plug-in door does not rub against the sealing ring during the process of withdrawing or inserting, and at the same time, the movable pressure frame, multiple driving cylinders and multiple cams of the prior art are omitted. The sealing structure of the plug-in door and the sealed door frame of the utility model is relatively simple, and its sealing is tight and reliable. Moreover, since its upper top structure automatically presses and seals when the driving mechanism inserts the plug-in door, the equipment cost is relatively low, and no additional electricity is required during the sealing and unsealing process, and its energy consumption cost is relatively low.

[0008] Furthermore, the upper support structure includes a plurality of pressing wheels rotatably matched on a plurality of pressing wheel brackets fixed on both sides of the inner wall of the sealing door frame away from the accommodating door frame, and a plurality of bosses fixed on both sides of the bottom surface of the plug-in door away from the accommodating door frame to cooperate with each pressing wheel and press the plug-in door upward; the upper support structure also includes a plurality of pressing wheels rotatably matched on a plurality of pressing wheel brackets fixed on the inner side wall of the accommodating door frame, and a plurality of bosses fixed on both sides of the bottom surface of the plug-in door in the accommodating door frame away from the sealing door frame to cooperate with each pressing wheel and press the plug-in door upward. After the upper support structure adopts the above specific structure, its structure is simple, the sealing is tight, reliable, safe and relatively convenient.

[0009] Furthermore, the boss is a rectangular block, the two ends of the bottom surface are chamfered or arc-shaped, and the middle of the bottom surface is a plane or an arc surface matching the top of the clamping wheel. After the boss adopts the above specific structure, the upper and lower push-off of the plug-in door is smoother and more reliable, further ensuring the technical effect of tight and reliable sealing.

[0010] Furthermore, the top angle of the inner wall of the plug-in door close to the sealing door frame and away from the accommodating door frame is an arc angle or a chamfer. After adopting the above structure, the plug-in door can be pushed up and closed more smoothly and reliably, further ensuring the technical effect of tight and reliable sealing.

[0011] Furthermore, a roller track is fixed in the middle of the inner width of the sealed door frame above the plug-in door and below the plug-in door, and the top and bottom surfaces of the end of the middle width of the plug-in door far from the accommodating door frame are both rotatably matched with door panel rollers for rolling in their respective roller tracks; a roller track is fixed in the middle of the inner width of the accommodating door frame above the plug-in door and below the plug-in door, and the top and bottom surfaces of the end of the middle width of the plug-in door close to the sealed door frame are both rotatably matched with door panel rollers for rolling in their respective roller tracks. With the above structure, it does not hinder the plug-in door from sealing or disengaging from the sealed door frame under the action of the upper top structure, and ensures the straightness, guidance and smoothness of the plug-in door during the withdrawal or insertion process.

[0012] Furthermore, a flexible sealing plate is fixed in the accommodating door frame to seal the long through hole of the partition vertical plate and the top, bottom and side surfaces of the plug-in door to prevent smoke leakage. It is not difficult to understand that there is a leak-proof sealing structure between the long through hole and the partition door in the prior art. After adopting the above structure, when the plug-in door and the sealed door frame are closed and sealed, double insurance is provided, further ensuring the technical effect of the tight and reliable sealing of the plug-in type smoke isolation door. When the plug-in door and the sealed door frame are opened, the long through hole on the partition vertical plate for the plug-in door to move linearly is also strengthened to further prevent smoke from leaking from the long through hole when the sealed door frame is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front cross-sectional structural schematic diagram mainly showing the upper roof structure in the utility model and the plug-in door is in a completely closed state.

[0014] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of A.

[0015] Figure 3 It is a front cross-sectional structural schematic diagram mainly showing the upper roof structure in the utility model and the plug-in door is in a completely closed state.

[0016] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of B.

[0017] Figure 5 The utility model is a schematic diagram of the structure of the plug-in plate type smoke isolation door when the plug-in plate door is in a completely closed state.

[0018] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of C in the figure.

[0019] Figure 7 The utility model is a schematic diagram of the structure when the plug-in plate door of the plug-in plate type smoke isolation door is in a completely closed state when viewed from the side.

[0020] Figure 8 yes Figure 7 A schematic diagram of the structure in which part of the plugboard shell is omitted and the upper structure and the supporting wheel are highlighted.

[0021] Fig. 9 yes Figure 8 Schematic diagram of the enlarged structure of D in the figure.

[0022] Fig.10 yes Figure 8 Schematic diagram of the enlarged structure of E.

[0023] Fig.11It is a schematic diagram of the structure of the utility model in a top view when the plug-in door is fully drawn out, i.e., fully opened.

[0024] Fig.12 yes Figure 2 Schematic diagram of the enlarged structure of F.

[0025] As shown in the figure:

[0026] 1. a plug-in door housing, 11. a sealed door frame, 111. an upper end surface, 112. a lower end surface, 113. an inner wall away from a receiving door frame, 114. an inner wall close to a receiving door frame, 115. a front inner wall, 116. a rear inner wall, 12. a receiving door frame, 121. an end plate away from a sealed door frame, 122. a front side wall, 123. a rear side wall, 13. a partition vertical plate, 131. an elongated through hole;

[0027] 2. a plug-in door, 21. a second connecting block, 22. a top surface of the plug-in door, 23. a bottom surface of the plug-in door, 24. a top corner;

[0028] 3. driving cylinder, 31. driving rod, 311. first U-shaped groove, 32. connecting rod, 321. first connecting block, 322. second U-shaped groove;

[0029] 4. Bolts with nuts;

[0030] 5. Flexible sealing ring, 51. Pressure strip, 52. Locking screw;

[0031] 6. upper structure, 61. first clamping wheel bracket, 62. first clamping wheel, 63. first boss, 64. first clamping wheel shaft, 641. first limiting nut, 65. second clamping wheel bracket, 66. second clamping wheel, 67. second boss, 68. second clamping wheel shaft, 681. second limiting nut;

[0032] 7. roller structure, 71. first roller track, 72. first door panel roller, 73. first roller shaft, 731. third limiting nut, 74. second roller track, 75. second door panel roller, 76. second roller shaft, 761. fourth limiting nut, 77. reinforcing rod, 78. connecting plate;

[0033] 8. Flexible sealing plate structure, 81. Flexible sealing plate, 82. Long pressing plate, 821. Long pressing plate with protruding flange plate, 83. Short pressing plate, 831. Short pressing plate with protruding flange plate. DETAILED DESCRIPTION

[0034] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these specific implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each specific implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 shown.

[0036] The utility model of the plug-in type smoke isolation door comprises a plug-in door housing 1 and a plug-in door 2. The plug-in door housing 1 is provided with a driving mechanism for inserting and withdrawing the plug-in door 2, such as the driving cylinder 3 described below. The plug-in door housing 1 comprises a sealing door frame 11 and a receiving door frame 12 for receiving the withdrawn plug-in door 2. The two end surfaces of the sealing door frame 11 are used to connect with and seal the inlet end and the outlet end of the annular flue. The partition vertical plate 13 between the sealing door frame 11 and the receiving door frame 12 is provided with an elongated through hole 131 for the plug-in door 2 to move linearly.

[0037] The above content can be expanded: the annular flue is like a rectangular flue. The sealing door frame 11 is a rectangular sealing door frame 11 as shown in the figure, and the accommodating door frame 12 for accommodating the pulled-out plug-in door is a rectangular accommodating door frame 12 as shown in the figure. The rectangular sealing door frame 11 and the rectangular accommodating door frame 12 constitute an integral plug-in door shell 1 connected by a partition vertical plate 13, and the plug-in door 2 is a rectangular plug-in door 2 as shown in the figure. The partition vertical plate 13 can be understood as a side plate of the sealing door frame 11 close to the accommodating door frame 12, and can also be understood as an end plate of the accommodating door frame 12 close to the sealing door frame 11. The height dimension of the accommodating door frame 12 can be smaller than the height dimension of the sealing door frame 11, but the height bisectors of the two are on the same straight line, that is, the heights of the two are aligned in the middle, leaving gaps above and below. The upper end face 111 and the lower end face 112 of the rectangular sealed door frame 11 are respectively connected and sealed with the inlet end and the outlet end of the rectangular flue. For example, the inlet end of the rectangular flue is connected and sealed with the inlet end of the sealed door frame 11 such as the upper end face 111, and the outlet end of the rectangular flue is connected and sealed with the outlet end of the sealed door frame 11 such as the lower end face 112. For example, the respective flanges can be locked by a number of bolts and nuts. The contact surface between the upper flange and the flange at the inlet end of the flue can be sealed with packing and other sealing materials, and the contact surface between the lower flange and the flange at the outlet end of the flue can also be sealed with packing and other sealing materials. The sealed door frame 11 can also be called a valve door frame. There is an elongated through hole 131 ( Figure 2 and Figure 4 Only the cross section of the long through hole is shown in the figure). It is not difficult to understand that there is a leak-proof sealing structure such as a heat-resistant rubber ring between the long through hole 131 and the partition door 2 in the prior art. The plug-in door housing 1 has a driving mechanism for inserting and pulling out the plug-in door 2, which can adopt the following specific structure: a driving cylinder 3 is fixed on the outer wall of the end plate 121 of the accommodating door frame 12 away from the sealed door frame, such as by using multiple screws to screw, and the driving rod 31 of the driving cylinder 3 passes through the end plate 121 away from the sealed door frame, and the free end of the driving rod 31 of the driving cylinder 3 is hinged to the end of the plug-in door 2 extending into the accommodating door frame 12. The plug-in door 2 is also called a plug-in. The driving cylinder 3 is also called a plug-in door driving cylinder. The driving cylinder 3 can be a hydraulic cylinder such as an oil cylinder, or a gas cylinder, or an electric push rod, or a hydraulic electric push rod; the driving rod 31 can be a push rod of a hydraulic cylinder such as an oil cylinder, or a push rod of a gas cylinder, or a push rod of an electric push rod, or a push rod of a hydraulic electric push rod.

[0038] The specific structure in which the free end of the driving rod 31 of the driving cylinder 3 is hinged to the end of the plug-in door 2 extending into the accommodating door frame 12 can be connected via a connecting rod 32: the free end of the driving rod 31 has a first U-shaped groove 311, and the first U-shaped groove 311 is inserted into the first connecting block 321 at one end of the connecting rod 32, and the two walls of the first U-shaped groove 311 at the free end of the driving rod 31 and the first connecting block 321 at this end of the connecting rod 32 are provided with coaxial through holes, and the split pin or the bolt 4 with a nut is rotatably fitted in the through hole; the other end of the connecting rod 32 has a second U-shaped groove 322, and the second U-shaped groove 322 is inserted into the second connecting block 21 at the middle of the width of one end of the plug-in door 2 extending into the accommodating door frame 12, and the two walls of the second U-shaped groove 322 at the other end of the connecting rod 32 and the second connecting block 21 at this end of the plug-in door 2 are provided with coaxial through holes, and the split pin or the bolt 4 with a nut is rotatably fitted in the through hole. With this structure, the connection between the driving rod 31 and the plug door 2 is more flexible, and there is no interference in the process of pulling or inserting the plug door 2. The pulling or inserting process is flexible, smooth, stable and reliable. The bolt 4 with a nut can also be called a bolt nut locking structure.

[0039] Of course, the connecting rod 32 may not be provided. Figure 5-Figure 10 As shown, a U-shaped groove is provided on the free end of the driving rod 31, and the U-shaped groove is inserted into the connecting block of the plug-in door, that is, the second connecting block 21 mentioned above. The two walls of the U-shaped groove on the free end of the driving rod 31 and the second connecting block 21 at the end of the plug-in door 2 are provided with coaxial through holes, and the split pin or the bolt 4 with a nut is rotatably fitted in the through hole. The second connecting block 21 can also be called a triangular connecting plate.

[0040] It is not difficult to understand that the plug-in type smoke isolation door of the utility model can also be equipped with a main controller or central processing unit such as a CPU, and a position sensor such as a proximity switch can be arranged on the inner wall of the sealing door frame away from the accommodating door frame. The main controller is electrically connected to the position sensor and the relay that controls the drive cylinder.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 shown.

[0042] A flexible sealing ring 5, or an annular flexible sealing ring close to the inner wall of the sealing door frame 11, is fixed on the inner wall of the sealing door frame 11. It is easy to understand that the inner wall here refers to the inner wall around the sealing door frame 11. The flexible sealing ring 5 can be made of polytetrafluoroethylene material with self-lubricating properties that are heat-resistant and reduce friction. The fixing can be made of four pressure strips 51, and multiple or several locking screws 52 are used to pass through the corresponding multiple or several screw holes on the pressure strips 51 and the flexible sealing ring 5 and tighten them in the corresponding multiple or several threaded holes on the inner wall around the sealing door frame 11. The locking screws 52 can also be called fixing screws.

[0043] An upper top structure 6 is fixed on the bottom surface 23 of the plug-in door and the plug-in door housing 1, which automatically presses the plug-in door 2 upward when the plug-in door 2 is fully inserted into the sealing door frame 11, so that the top surface 22 of the plug-in door presses against the flexible sealing ring 5 to seal.

[0044] The upper structure 6 is preferably the first specific example: the upper structure 6 includes a plurality of pressing wheels such as two pressing wheels that are rotatably matched on a plurality of pressing wheel brackets such as two pressing wheels that are fixed on both sides of the inner wall 113 of the sealing door frame 11 away from the accommodating door frame, and a plurality of bosses such as two bosses that are fixed on the bottom surface 23 of the plug-in door away from the accommodating door frame 12 or fixed with each pressing wheel to push the plug-in door 2 upward. For the convenience of distinction, the pressing wheel bracket described above can be called the first pressing wheel bracket 61, the pressing wheel described above can be called the first pressing wheel 62, and the boss described above can be called the first boss 63. The upper structure 6 also includes a plurality of pressing wheels such as two pressing wheels that are rotatably matched on a plurality of pressing wheel brackets such as two pressing wheels that are fixed on the front side wall 122 and the rear side wall 123 of the accommodating door frame 12, and a plurality of bosses such as two bosses that are fixed on the bottom surface 23 of the plug-in door in the accommodating door frame 12 away from the sealing door frame 11 or fixed with each pressing wheel to push the plug-in door 2 upward. For the sake of distinction, the above-mentioned pressure wheel bracket can be called the second pressure wheel bracket 65, the above-mentioned pressure wheel can be called the second pressure wheel 66, and the above-mentioned boss can be called the second boss 67.

[0045] The bosses such as the first boss 63 and the second boss 67 are preferably rectangular blocks, the two ends of the bottom surface can be chamfered or arc-shaped, the middle of the bottom surface can be a plane or an arc surface matching the top of the clamping wheel, and the width of the boss can be equal to the width of the clamping wheel. The top of the cylinder is fixed to the bottom surface 23 of the plug-in door, such as by welding. When the plug-in door 2 is not inserted into place, the cylindrical bosses such as the first boss 63 and the second boss 67 are not in contact with the pressing wheels such as the first pressing wheel 62 and the second pressing wheel 66. When the plug-in door 2 is fully inserted into the sealing door frame 11, that is, when the plug-in door 2 is inserted into place, that is, when the inner end of the plug-in door 2 is against or close to the inner wall 113 of the sealing door frame 11 away from the accommodating door frame, the bottom arc surface of the cylindrical bosses such as the first boss 63 and the second boss 67 is automatically pressed upward by the pressing wheels such as the first pressing wheel 62 and the second pressing wheel 66, thereby pressing the top surface 22 of the plug-in door against the bottom surface of the flexible sealing ring 5 to seal, and the sealing structure is tight and reliable, and basically has zero leakage. It is not difficult to understand that the first boss 63 is pushed up by the first pressing wheel 62, and the second boss 67 is pushed up by the second pressing wheel 66.

[0046] The second specific example of the upper top structure: the rest of the structure is the same as the first embodiment. The difference is that the bosses such as the first boss and the second boss are wedge-shaped blocks, the pointed end or the thin end of the wedge-shaped block faces the clamping roller matched with it, the thick end of the wedge-shaped block is away from the clamping roller matched with it, and the top surface of the wedge-shaped block is fixed to the bottom surface of the plug-in door such as welding. When the plug-in door is not inserted into place, the boss of the wedge-shaped block has no contact with the clamping wheel. When the plug-in door is fully inserted into the sealing door frame, that is, when the plug-in door is inserted into place, that is, when the inner end of the plug-in door is against or close to the inner wall of the sealing door frame away from the accommodating door frame, the bottom inclined surface of the boss of the wedge-shaped block is automatically pressed upward by the clamping wheel, thereby pressing the top surface of the plug-in door against the bottom surface of the flexible sealing ring to seal, and the sealing structure is tight and reliable.

[0047] Each clamping wheel can adopt the following specific structure: including a clamping wheel bracket fixed, such as welding or screwed to the inner wall of the sealing door frame or the inner wall of the accommodating door frame, a clamping wheel shaft rotatably matched with the clamping wheel bracket, and a clamping wheel. The clamping wheel is rotatably matched with the clamping wheel bracket, and the clamping roller shaft and the two side plates of the clamping wheel bracket can be fixed to the clamping wheel such as interference fit, and the clamping wheel shaft and the two side plates of the clamping wheel bracket can be rotatably matched; or the clamping wheel shaft and the two side plates of the clamping wheel bracket can be fixed such as fixed by a latch, and the clamping wheel and the clamping wheel shaft can be rotatably matched. The clamping wheel bracket is such as the first clamping wheel bracket 61 and the second clamping wheel bracket 65 mentioned above, the clamping wheel is such as the first clamping wheel 62 and the second clamping wheel 66 mentioned above, and the clamping wheel shaft is such as the first clamping wheel shaft 64 and the second clamping wheel shaft 68. The first clamping wheel shaft 64 has an axial limiting structure such as an internal limiting step and an external limiting nut, and the limiting nut here can be called the first limiting nut 641. The second clamping wheel shaft 68 has an axial limiting structure such as an inner limiting step and an outer limiting nut, where the limiting nut can be referred to as a second limiting nut 681 .

[0048] The top corner 24 of the plug-in door 2 close to the sealing door frame 11 and away from the inner wall 113 of the accommodating door frame is a rounded corner or a chamfered corner.

[0049] A third specific example of the upper top structure described: the bottom surface of the plug-in door in the sealed door frame is rotatably matched with two rolling wheels on both sides of the accommodating door frame, such as a rolling wheel axle is fixed on the rolling wheel frame, and rolling wheels are rotatably matched on the rolling wheel axle, and the sealed door frame is provided with a wedge-shaped plate bracket on both sides of the inner wall of the accommodating door frame away from the accommodating door frame, and a wedge-shaped plate is provided on the top of the wedge-shaped plate bracket, and the pointed end or the thin end of the wedge-shaped plate faces the rolling wheel matched with it, and the thick end of the wedge-shaped plate is away from the rolling wheel matched with it; the bottom surface of the plug-in door in the accommodating door frame is rotatably matched with two rolling wheels on both sides of the sealed door frame, such as a rolling wheel axle is fixed on the rolling wheel frame, and rolling wheels are rotatably matched on the rolling wheel axle, and a wedge-shaped plate bracket is provided on each side wall of the accommodating door frame, and each wedge-shaped plate bracket has a wedge-shaped plate on the top, and the pointed end or the thin end of the wedge-shaped plate faces the rolling wheel matched with it, and the thick end of the wedge-shaped plate is away from the rolling wheel matched with it. When the plug-in door is not inserted into place, the wedge plate has no contact with the clamping wheel. When the plug-in door is fully inserted into the sealing door frame, that is, when the plug-in door is inserted into place, that is, when the inner end of the plug-in door is against or close to the inner wall of the sealing door frame away from the accommodating door frame, the rolling wheel is automatically pressed upward by the inclined surface of the top surface of the wedge plate, thereby pressing the top surface of the plug-in door against the bottom surface of the flexible sealing ring to seal, and the sealing structure is tight and reliable.

[0050] The plug-in type smoke isolation door also includes a roller structure 7: a roller track is fixed in the middle of the width of the sealed door frame 11 above the plug-in door 2, that is, above the plug-in door 2, and a roller track is fixed below the plug-in door 2. The top surface and the bottom surface of the middle of the width of the plug-in door 2 away from the end of the accommodating door frame 12 are both rotatably matched with door panel rollers for rolling in their respective roller tracks. For the convenience of distinction, the roller track mentioned above can be called the first roller track 71, and the door panel roller mentioned above can be called the first door panel roller 72. A roller track is fixed in the middle of the width of the accommodating door frame 12 above the plug-in door 2, that is, above the plug-in door 2, and a roller track is fixed below the plug-in door 2. The top surface and the bottom surface of the middle of the width of the plug-in door 2 close to the end of the sealed door frame are both rotatably matched with door panel rollers for rolling in their respective roller tracks. For the convenience of distinction, the roller track mentioned above can be called the second roller track 74, and the door panel roller mentioned above can be called the second door panel roller 75. One end of the first roller track 71 composed of two parallel rectangular plates in the sealed door frame 11 can be welded to the inner wall 113 in the sealed door frame 11 away from the accommodating door frame, and the other end can be welded to the inner wall 114 in the sealed door frame 11 close to the accommodating door frame. It is not difficult to understand that the inner wall 114 close to the accommodating door frame mentioned here is the inner wall of the sealed door frame side of the side plate close to the accommodating door frame 12 described below. One end of the second roller track 74 composed of two parallel rectangular plates in the accommodating door frame 12 can be welded to the inner wall in the accommodating door frame 12 away from the sealed door frame, that is, the inner wall of the end plate 121 away from the sealed door frame, and the other end can be welded to the wall of the accommodating door frame 12 side of the partition vertical plate 13. The upper and lower first door panel supporting wheels 72 of the plug-in door 2 in the sealed door frame 11 can be rotatably matched at both ends of a first supporting wheel shaft 73 that passes through the plug-in door 2 and is welded and fixed to the plug-in door 2, and are axially limited such as an internal limiting step and an external limiting nut, and the limiting nut here can be called a third limiting nut 731. The upper and lower second supporting wheels of the plug-in door 2 in the accommodating door frame 12 can be rotatably matched at both ends of a second supporting wheel shaft 76 that passes through the plug-in door 2 and is welded and fixed to the plug-in door 2, and are axially limited such as an internal limiting step and an external limiting nut, and the limiting nut here can be called a fourth limiting nut 761. A plurality of bolts 4 with nuts for reinforcement, such as a stud bolt with two nuts or a welded reinforcing rod 77, can be set in the middle of the length of each supporting wheel track, and the reinforcing rod 77 can also be called a reinforcing rib. A plurality of reinforcing connecting plates 78 may be provided in the middle of the length of each roller track, one end of each connecting plate 78 being fixed, such as by welding, to the outer side of the roller track, and the other end of each connecting plate 78 being fixed, such as by welding, to the front inner wall 115 or the rear inner wall 116 of the sealing door frame 11, and the front side wall 122 or the rear side wall 123 of the accommodating door frame 12.

[0051] It is not difficult to understand that both the clamping wheel and the door panel supporting wheel can adopt rolling bearings. The door panel supporting wheel can also be called the inserting door supporting wheel, or the inserting plate supporting wheel.

[0052] The plug-in type smoke isolation door also includes a flexible sealing plate structure 8: a flexible sealing plate 81 or a flexible sealing ring plate is fixed in the accommodating door frame 12 to seal the elongated through hole 131 of the partition vertical plate 13, the top surface 22 of the plug-in door, the bottom surface 23 of the plug-in door, and the front side and rear side of the plug-in door to prevent smoke leakage. The flexible sealing plate 81 can be a sealing ring plate made of polytetrafluoroethylene material with self-lubricating properties that are heat-resistant and reduce friction. The top surface 22 of the plug-in door, the bottom surface 23 of the plug-in door, and the flexible sealing plate 81 on the front side and the rear side of the plug-in door can all adopt the following fixing structure: the outer surface of the flexible sealing plate 81, i.e., the upper surface, the lower surface, the front side surface and the rear side surface, can all have a long pressing plate 82, one end of the long pressing plate 82 can be fixed to the side or the inner wall of the partition vertical plate 13 containing the door frame 12, such as welding, and the end of the flexible sealing plate 81 away from the sealing door frame 11 has a short pressing plate 83, the short pressing plate 83 limits the horizontal position of the flexible sealing plate 81, and the flange plate 831 protruding from the short pressing plate is screwed and fixed to the flange plate 821 protruding from the long pressing plate through multiple or several bolts 4 with nuts. It is not difficult to understand that the bolts 4 with nuts mentioned above include single-headed bolts and stud bolts.

[0053] It is easy to understand that, except for the sealing materials such as the flexible sealing ring 5, the flexible sealing plate 81 and the rubber ring, the remaining parts of the plug-in type smoke isolation door are all made of steel materials.

[0054] The above unmarked parts, structures or quantities are not shown in the drawings. The drawings are for illustration only. If there is any inconsistency between the drawings and the text description or between the drawings, the text description shall prevail.

[0055] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. 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 plug-in type smoke isolation door, comprising a plug-in door housing and a plug-in door, the plug-in door housing is provided with a driving mechanism for inserting and withdrawing the plug-in door, the plug-in door housing comprises a sealing door frame and a receiving door frame for receiving the withdrawn plug-in door, the two end surfaces of the sealing door frame are used to connect and seal with the inlet end and the outlet end of the annular flue, and the partition vertical plate between the sealing door frame and the receiving door frame is provided with an elongated through hole for the linear movement of the plug-in door; the characteristics are: A flexible sealing ring is fixed on the inner wall of the sealing door frame, and an upper top structure is fixed on the bottom surface of the plug-in door and the plug-in door shell, which automatically pushes the plug-in door upward when the plug-in door is fully inserted into the sealing door frame, so that the top surface of the plug-in door is pressed against the flexible sealing ring to seal.

2. The plug-in type smoke isolation door according to claim 1, characterized in that: The upper supporting structure includes a plurality of pressing wheels rotatably engaged on a plurality of pressing wheel brackets fixed on both sides of the inner wall of the sealing door frame away from the accommodating door frame, and a plurality of bosses fixed on the bottom surface of the plug-in door away from the two sides of the accommodating door frame, which cooperate with each pressing wheel to press the plug-in door upward; the upper supporting structure also includes a plurality of pressing wheels rotatably engaged on a plurality of pressing wheel brackets fixed on the inner side wall of the accommodating door frame, and a plurality of bosses fixed on the bottom surface of the plug-in door in the accommodating door frame away from the two sides of the sealing door frame, which cooperate with each pressing wheel to press the plug-in door upward.

3. The plug-in type smoke isolation door according to claim 2, characterized in that: The boss is a rectangular block, the two ends of the bottom surface are chamfered or arc-shaped, and the middle of the bottom surface is a plane or an arc surface matching the top of the clamping wheel.

4. The plug-in type smoke isolation door according to any one of claims 1 to 3, characterized in that: The top angle of the inner wall of the plug-in door close to the sealing door frame and away from the accommodating door frame is a rounded angle or a chamfered angle.

5. The plug-in type smoke isolation door according to claim 2, characterized in that: A roller track is fixed in the middle of the inner width of the sealed door frame above the plug-in door and below the plug-in door, and the top surface and the bottom surface of the middle of the width of the plug-in door away from the accommodating door frame are rotatably matched with door panel rollers for rolling in their respective roller tracks; a roller track is fixed in the middle of the inner width of the accommodating door frame above the plug-in door and below the plug-in door, and the top surface and the bottom surface of the middle of the width of the plug-in door close to the sealed door frame are rotatably matched with door panel rollers for rolling in their respective roller tracks.

6. The plug-in type smoke isolation door according to claim 1, characterized in that: A flexible sealing plate is fixed in the accommodating door frame for sealing the long through holes of the partition vertical plate and the top surface, bottom surface and side surfaces of the plug-in door to prevent smoke leakage.

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