Isolation disc door

Abstract

The invention discloses an isolating disc-shaped door, which relates to the technical field of accessories for smoke and air ducts of power station boilers, and comprises a frame and a disc-shaped door, wherein a connecting rod is fixedly arranged on the frame, and the disc-shaped door is rotatably connected to the connecting rod; a pressure reducing plate is rotatably arranged on the disc-shaped door, and the pressure reducing plate is fitted with the disc-shaped door, a plurality of first connecting holes are arranged on the disc-shaped door, and a plurality of second connecting holes are arranged on the pressure reducing plate, and the plurality of first connecting holes correspond to the plurality of second connecting holes one by one and are connected; after the vent is opened to the maximum extent, the abutment ring moves down to abut against the disc-shaped door, and at this time, the screw rod can be continuously rotated to make the gear rod drive the disc-shaped door to rotate and open, and during the process of opening or closing the disc-shaped door, the vent is always in the maximum open state, which effectively avoids the disc-shaped door being subjected to a large wind pressure and a large rotation resistance during the process of rotating the switch, thereby affecting the operation and even causing the disc-shaped door to be deformed or damaged.

Description

Technical Field

[0001] The invention relates to the technical field of power station boiler smoke and air duct accessories, and in particular to an isolation disc-shaped door. Background Art

[0002] The pulverized coal pipeline is used to transport pulverized coal to the combustion chamber for combustion. In order to ensure that the pulverized coal can be transported to the combustion chamber efficiently and stably, the pulverized coal needs to be blown into the combustion chamber through pressurized gas in the pipeline, so that the pulverized coal can be fully burned in a high-temperature environment and release heat energy to provide power for thermal power generation. A disc-shaped isolation door is generally installed on the pulverized coal pipeline to adjust the supply of pulverized coal, control the temperature and pressure in the combustion chamber, and isolate the pipeline from the combustion chamber.

[0003] In the prior art, when wind pressure is introduced into the pipeline, if it is necessary to open or close the disc-shaped isolation door or adjust the size of the vent, during the rotation of the disc-shaped door, the wind pressure will exert a certain pressure on the door body, causing greater resistance when the disc-shaped door is opened or closed, which not only affects the operation, but the long-term wind pressure will also cause deformation and damage to the hinge of the disc-shaped door and the disc-shaped door itself. Summary of the invention

[0004] The object of the present invention is to provide an insulating disc-shaped door to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An isolation disc-shaped door comprises a frame and a disc door, wherein a connecting rod is fixedly arranged on the frame, and the disc door is rotatably connected to the connecting rod;

[0007] A pressure relief plate is rotatably provided on the disc door, the pressure relief plate is fitted with the disc door, a plurality of first communication holes are provided on the disc door, a plurality of second communication holes are provided on the pressure relief plate, and the plurality of first communication holes correspond to the plurality of second communication holes one by one and are connected;

[0008] It also includes a decompression assembly, which is used to drive the decompression plate to rotate when the disc door is closed, and control the opening and closing of the disc door after the first connecting hole and the second connecting hole are completely connected;

[0009] The decompression assembly comprises a gear rod slidably arranged on the disc door, a first gear is rotatably arranged on the disc door, the gear rod is meshed with the first gear for transmission, a second gear is fixedly arranged on the decompression plate, the second gear is meshed with the first gear for transmission;

[0010] A fixing frame is fixedly arranged on the frame, a screw rod is rotatably arranged on the fixing frame, the screw rod is threadedly connected with the gear rod, an abutment ring is fixedly arranged on the gear rod, and the abutment ring abuts against the disc door;

[0011] It also includes a clamping assembly, which is used to improve the pressure resistance of the disc door when the disc door is closed.

[0012] Preferably, the decompression assembly further comprises a locking block slidably disposed on the disc door, and the locking block is engaged with the abutment ring.

[0013] Preferably, a first spring is provided between the locking block and the disc door, and two ends of the first spring are fixedly connected to the locking block and the disc door respectively.

[0014] Preferably, a lifting rod is slidably provided on the disc door, a plug-in slot is provided on the lock block, and the lifting rod is plugged into the plug-in slot;

[0015] The lifting rod is provided with a third inclined surface, and the locking block is provided with a second inclined surface, and the second inclined surface is in contact with the third inclined surface.

[0016] Preferably, a second spring is provided between the lifting rod and the disc door, and two ends of the second spring are fixedly connected to the lifting rod and the disc door respectively.

[0017] Preferably, an abutment block corresponding to the lifting rod is fixedly provided on the frame, the abutment block abuts against the lifting rod, and a first inclined surface is provided on the abutment block, and the first inclined surface contacts the lifting rod.

[0018] Preferably, the clamping assembly comprises a telescopic rod slidably arranged on the connecting rod, a clamping block is fixedly arranged on the telescopic rod, and the clamping block is clamped and connected with the disc door;

[0019] The telescopic rod is in contact with the gear rod.

[0020] Preferably, a third spring is provided between the telescopic rod and the connecting rod, and two ends of the third spring are fixedly connected to the telescopic rod and the connecting rod respectively.

[0021] Preferably, the diameter of the pressure relief plate is smaller than the diameter of the disc door.

[0022] Preferably, the first inclined surfaces on the two abutting blocks are arranged opposite to each other.

[0023] In the above technical solution, the insulating disc-shaped door provided by the present invention has the following beneficial effects:

[0024] When adjusting the size of the vent, the screw rotates to move the gear rod downward, and at the same time drives the second gear and the pressure reducing plate to rotate through the first gear, so that the second connecting hole on the pressure reducing plate is connected to the first connecting hole on the disc door accordingly. The size of the connecting area between the first connecting hole and the second connecting hole is the size of the vent, and after the vent is opened to the maximum extent, the abutment ring moves down to abut against the disc door. At this time, the screw can be continued to be rotated to make the gear rod drive the disc door to rotate and open. During the opening or closing process of the disc door, the vent is always in the maximum open state, which effectively avoids the disc door being subjected to greater wind pressure and greater rotation resistance during the turning of the switch, affecting the operation, and even causing deformation or damage to the disc door.

[0025] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0026] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the disc door and pressure relief plate structure provided by an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the structure of a pressure relief plate provided in an embodiment of the present invention;

[0031] Figure 4 A top view of a disc door and a pressure relief plate provided in an embodiment of the present invention;

[0032] Figure 5 A front cross-sectional view of a dish door provided by an embodiment of the present invention;

[0033] Figure 6 The embodiment of the present invention provides Figure 5 A in the enlarged view;

[0034] Figure 7 A schematic diagram of the structure of the abutment ring, the locking block and the lifting rod provided in an embodiment of the present invention;

[0035] Figure 8 A schematic diagram of the structure of a clamping assembly provided in an embodiment of the present invention;

[0036] Fig. 9 A schematic diagram of a framework structure provided for an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Frame; 11. Fixing frame; 12. Abutment block; 13. First inclined surface; 14. Connecting rod; 2. Dish door; 21. First connecting hole; 22. First gear; 3. Pressure relief plate; 31. Second connecting hole; 32. Second gear; 4. Gear rod; 41. Abutment ring; 42. Screw rod; 5. Locking block; 51. Insertion groove; 52. Second inclined surface; 53. First spring; 6. Lifting rod; 61. Second spring; 62. Third inclined surface; 7. Telescopic rod; 71. Connecting block; 72. Third spring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0040] See also Figure 1-9, an isolation disc-shaped door, comprising a frame 1 and a disc door 2, a connecting rod 14 is fixedly arranged on the frame 1, and the disc door 2 is rotatably connected to the connecting rod 14; a decompression plate 3 is rotatably arranged on the disc door 2, and the decompression plate 3 is fitted with the disc door 2, a plurality of first connecting holes 21 are arranged on the disc door 2, and a plurality of second connecting holes 31 are arranged on the decompression plate 3, and the plurality of first connecting holes 21 correspond to the plurality of second connecting holes 31 one by one and are connected; and a decompression component is also included, which is used to drive the decompression plate 3 to rotate when the disc door 2 is closed, and control the switch of the disc door 2 after the first connecting holes 21 and the second connecting holes 31 are fully connected; the decompression component comprises a gear rod 4 slidably arranged on the disc door 2, a first gear 22 is rotatably arranged on the disc door 2, the gear rod 4 is meshed with the first gear 22 for transmission, a second gear 32 is fixedly arranged on the decompression plate 3, and the second gear 32 is meshed with the first gear 22 for transmission; a fixing frame 11 is fixedly arranged on the frame 1, a screw 42 is rotatably arranged on the fixing frame 11, and the screw 42 is screwed with the gear rod 4 The gear rod 4 is connected with the disc door 2 by a groove, and an abutting ring 41 is fixedly provided on the gear rod 4, and the abutting ring 41 abuts against the disc door 2; it also includes a clamping assembly, which is used to improve the pressure resistance of the disc door 2 when the disc door 2 is closed, and the screw rod 42 rotates to move the gear rod 4 downward, and at the same time drives the second gear 32 and the pressure relief plate 3 to rotate through the first gear 22, so that the second connecting hole 31 on the pressure relief plate 3 is correspondingly connected with the first connecting hole 21 on the disc door 2. When the disc door 2 is in a closed state, the size of the vent can be controlled by rotating the screw rod 42, and the connecting area between the first connecting hole 21 and the second connecting hole 31 is a vent; when the gear rod 4 moves to the lowest point and the abutting ring 41 abuts against the disc door 2, the screw rod 42 continues to rotate, and the gear rod 4 cannot continue to slide downward, and the disc door 2 will be rotated synchronously with the screw rod 42, that is, the disc door 2 is opened, and during the opening process of the disc door 2, the vent is in the maximum state, which greatly reduces the wind pressure on the disc door 2 during the opening process, resulting in deformation or even damage of the disc door 2.

[0041] The decompression assembly also includes a locking block 5 slidably arranged on the disc door 2, and the locking block 5 is engaged with the abutment ring 41. When the screw 42 rotates to open the vent to the maximum state, the disc door 2 rotates and opens when the screw 42 continues to rotate. When the disc door 2 is opened, the locking block 5 is engaged with the abutment ring 41, so that the gear rod 4 cannot slide. At this time, whether the screw 42 is rotated forward or reversely, it will directly drive the disc door 2 to rotate, that is, when the disc door 2 is not in a closed state, the rotation of the screw 42 will directly drive the disc door 2 to rotate to open or close.

[0042] A first spring 53 is provided between the lock block 5 and the disc door 2, and the two ends of the first spring 53 are fixedly connected to the lock block 5 and the disc door 2 respectively. Under the action of the first spring 53, the lock block 5 engages with the abutment ring 41, so that the gear rod 4 cannot slide, thereby the rotation of the disc door 2 can be directly controlled by the screw rod 42; when the disc door 2 is in the closed state, the first spring 53 is in a compressed state, and the abutment ring 41 will not contact the lock block 5 until the abutment ring 41 drops to the bottom and abuts against the disc door 2, and the screw rod 42 continues to be rotated to open the disc door 2. At this time, the first spring 53 is reset to engage the lock block 5 with the abutment ring 41, that is, when the disc door 2 is not in the closed state, the lock block 5 engages with the abutment ring 41, so that the screw rod 42 can directly drive the disc door 2 to rotate.

[0043] Specifically, a lifting rod 6 is slidably provided on the disc door 2, and a plug-in groove 51 is provided on the lock block 5, and the lifting rod 6 is plugged into the plug-in groove 51; a third inclined surface 62 is provided on the lifting rod 6, and a second inclined surface 52 is provided on the lock block 5, and the second inclined surface 52 contacts the third inclined surface 62, and a second spring 61 is provided between the lifting rod 6 and the disc door 2, and the two ends of the second spring 61 are fixedly connected to the lifting rod 6 and the disc door 2 respectively. When the disc door 2 is in a closed state, the lifting rod 6 and the plug-in groove 51 are in a plug-in state, and the second spring 61 is in a compressed state. At this time, the lock block 5 will not contact the abutment ring 41, and the first spring 53 is also in a compressed state. After the disc door 2 is opened and is not in a closed state, the second spring 61 is reset, and the lifting rod 6 is disengaged from the plug-in groove 51. , the lock block 5 slides out under the reset action of the first spring 53 and engages with the abutment ring 41, so that the disc door 2 can be directly driven to rotate and open or close through the screw 42. When the disc door 2 is closed, the lifting rod 6 moves down, and through the action of the third inclined surface 62 and the second inclined surface 52, the lock block 5 slides to compress the first spring 53 and disengages from the abutment ring 41. At the same time, the lifting rod 6 is plugged into the insertion groove 51 to fix the lock block 5. At this time, the abutment ring 41 loses the engagement of the lock block 5, and the screw 42 is continuously reversed, and the gear rod 4 rises. The pressure reducing plate 3 can be rotated through the transmission of the first gear 22 and the second gear 32, and the first connecting hole 21 and the second connecting hole 31 are misaligned, that is, the vent is reduced and closed.

[0044] Furthermore, an abutment block 12 corresponding to the lifting rod 6 is fixedly provided on the frame 1, and the abutment block 12 abuts against the lifting rod 6. A first inclined surface 13 is provided on the abutment block 12, and the first inclined surface 13 contacts the lifting rod 6. When the disc door 2 is in a closed state, the abutment block 12 abuts against the lifting rod 6, so that the lifting rod 6 is plugged into the insertion groove 51, and the locking block 5 is limited, so that when the screw 42 rotates, the size of the vent can be adjusted by driving the gear rod 4 to rise and fall. When the abutment ring 41 slides to the bottom and abuts against the disc door 2, the screw 42 continues to rotate. Because the abutment rod abuts against the disc door 2, the gear rod 4 cannot continue to slide downward, so that the screw 42 can drive the disc door 2 to open through the gear rod 4. When the disc door 2 is opened, the abutment The block 12 disengages from the lifting rod 6. Under the action of the second spring 61, the lifting rod 6 rises and disengages from the insertion groove 51. The locking block 5 is engaged with the abutment ring 41 under the action of the first spring 53. Since the abutment ring 41 is engaged with the locking block 5, the gear rod 4 cannot slide, and the rotation of the disc door 2 is controlled by the screw 42. When the disc door 2 is not in a closed state, the vent is always in a fully open state. When the disc door 2 is closed, the abutment block 12 moves down under the action of the first inclined surface 13, the second spring 61 is compressed, and at the same time, the locking block 5 slides to compress the first spring 53 and disengage from the abutment ring 41. Then, the screw 42 is reversed to move the gear rod 4 up to adjust or close the vent.

[0045] Furthermore, the clamping assembly includes a telescopic rod 7 slidably arranged on the connecting rod 14, and a clamping block 71 is fixedly arranged on the telescopic rod 7, and the clamping block 71 is clamped and connected with the disc door 2; the telescopic rod 7 abuts against the gear rod 4, and a third spring 72 is arranged between the telescopic rod 7 and the connecting rod 14, and the two ends of the third spring 72 are respectively fixedly connected to the telescopic rod 7 and the connecting rod 14. When the vent is fully opened, the telescopic rod 7 is abutted by the gear rod 4, so that the clamping block 71 is disengaged from the disc door 2. When the vent is not fully opened, the gear rod 4 does not abut against the telescopic rod 7, and the disc door 2 is in a closed state. Under the action of the third spring 72, the clamping block 71 is clamped with the disc door 2, thereby improving the pressure resistance and stability of the disc door 2 when it is not opened.

[0046] Specifically, the diameter of the pressure relief plate 3 is smaller than the diameter of the disc door 2 , so that when the disc door 2 rotates, interference between the pressure relief plate 3 and the inside of the frame 1 is avoided to affect the opening and closing of the disc door 2 .

[0047] Furthermore, the first inclined surfaces 13 on the two abutting blocks 12 are arranged opposite to each other, so that the two abutting blocks 12 can abut against the lifting rods 6 on both sides respectively.

[0048] In the present invention, the rotation of the screw rod 42 can be driven by electric, pneumatic and manual driving methods in the prior art.

[0049] Working principle: When adjusting the size of the vent, the screw 42 is rotated, the gear rod 4 moves downward, the gear rod 4 drives the first gear 22 to rotate, and drives the pressure relief plate 3 to rotate through the second gear 32, so that the connecting area between the second connecting hole 31 on the pressure relief plate 3 and the first connecting hole 21 on the disc door 2 is increased, that is, the vent is increased, on the contrary, the screw 42 is reversed to reduce the vent;

[0050] When the disc door 2 is opened, the screw rod 42 is rotated, the gear rod 4 moves downward, the ventilation opening is increased, and when the ventilation opening is at its maximum, the abutting ring 41 on the gear rod 4 slides to the bottom and abuts against the disc door 2. At the same time, the gear rod 4 presses the telescopic rod 7 to move the telescopic rod 7 downward, the third spring 72 is compressed, and the clamping block 71 on the telescopic rod 7 is disengaged from the disc door 2. The screw rod 42 continues to be rotated. Since the abutting ring 41 abuts against the disc door 2, the screw 42 drives the gear rod 4 when rotating, and drives the disc door 2 to rotate and open through the abutting ring 41;

[0051] After the disc door 2 is rotated and opened, the lifting rod 6 is disengaged from the abutment block 12. Under the reset action of the second spring 61, the lifting rod 6 rises and disengages from the insertion groove 51. At this time, the first spring 53 is resiliently reset, so that the locking block 5 slides to lock the abutment ring 41. At this time, whether the screw rod 42 is rotated forward or reverse, it will directly drive the disc door 2 to rotate, the pressure relief plate 3 does not move, and the first connecting hole 21 and the second connecting hole 31 are in a fully connected state, so that the wind pressure on the disc door 2 can be greatly reduced when it is in the open state.

[0052] When closing the disc door 2, the screw 42 is reversed. Since the abutting ring 41 abuts against the locking block 5, the screw 42 drives the disc door 2 to be closed through the gear rod 4. During the closing process, the first connecting hole 21 and the second connecting hole 31 are in a completely connected state, which can effectively reduce the wind pressure effect on the disc door 2 when closing. After the disc door 2 is completely closed, the abutting block 12 abuts against the lifting rod 6 through the first inclined surface 13, so that the lifting rod 6 descends and squeezes the second spring 61. When the lifting rod 6 descends, it abuts against the third inclined surface 62 and the third connecting hole 31. The second inclined surfaces 52 act to make the locking block 5 slide and disengage from the abutment ring 41, and the first spring 53 is compressed. At this time, the screw rod 42 is continued to be reversed to make the gear rod 4 rise, and the pressure reducing plate 3 is rotated through the transmission of the first gear 22 and the second gear 32, so that the first connecting hole 21 and the second connecting hole 31 are offset until they are completely closed. At the same time as the gear rod 4 rises, under the resetting action of the third spring 72, the engaging block 71 is engaged with the disc door 2, which greatly improves the pressure resistance and stability of the disc door 2.

[0053] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An insulating disc-shaped door, comprising a frame (1) and a disc door (2), characterized in that: A connecting rod (14) is fixedly arranged on the frame (1), and the disc door (2) is rotatably connected to the connecting rod (14); A pressure relief plate (3) is rotatably provided on the disc door (2), the pressure relief plate (3) is fitted with the disc door (2), a plurality of first communication holes (21) are provided on the disc door (2), a plurality of second communication holes (31) are provided on the pressure relief plate (3), the plurality of first communication holes (21) correspond to the plurality of second communication holes (31) one by one, and are connected; It also includes a decompression assembly, which is used to drive the decompression plate (3) to rotate when the disc door (2) is closed, and to control the opening and closing of the disc door (2) after the first communication hole (21) and the second communication hole (31) are completely connected; The decompression assembly comprises a gear rod (4) slidably arranged on the disc door (2); a first gear (22) is rotatably arranged on the disc door (2); the gear rod (4) is meshed with the first gear (22) for transmission; a second gear (32) is fixedly arranged on the decompression plate (3); the second gear (32) is meshed with the first gear (22) for transmission; A fixing frame (11) is fixedly arranged on the frame (1), a screw rod (42) is rotatably arranged on the fixing frame (11), the screw rod (42) is threadedly connected to the gear rod (4), an abutment ring (41) is fixedly arranged on the gear rod (4), and the abutment ring (41) abuts against the disc door (2); It also includes a clamping assembly, which is used to improve the pressure resistance of the disc door (2) when the disc door (2) is closed; The decompression assembly further comprises a locking block (5) slidably arranged on the disc door (2), wherein the locking block (5) is engaged and connected with the abutment ring (41); A lifting rod (6) is slidably provided on the disc door (2), a plug-in slot (51) is provided on the lock block (5), and the lifting rod (6) is plugged into the plug-in slot (51); The lifting rod (6) is provided with a third inclined surface (62), the locking block (5) is provided with a second inclined surface (52), and the second inclined surface (52) is in contact with the third inclined surface (62); A second spring (61) is provided between the lifting rod (6) and the disc door (2), and two ends of the second spring (61) are fixedly connected to the lifting rod (6) and the disc door (2) respectively; A contact block (12) corresponding to the lifting rod (6) is fixedly arranged on the frame (1), the contact block (12) is in contact with the lifting rod (6), and a first inclined surface (13) is arranged on the contact block (12), and the first inclined surface (13) is in contact with the lifting rod (6).

2. The insulating disc-shaped door according to claim 1, characterized in that: A first spring (53) is provided between the locking block (5) and the disc door (2), and two ends of the first spring (53) are respectively fixedly connected to the locking block (5) and the disc door (2).

3. The insulating disc-shaped door according to claim 1, characterized in that: The clamping assembly comprises a telescopic rod (7) slidably arranged on a connecting rod (14), a clamping block (71) being fixedly arranged on the telescopic rod (7), and the clamping block (71) is clamped and connected with the disc door (2); The telescopic rod (7) abuts against the gear rod (4).

4. The insulating disc-shaped door according to claim 3, characterized in that: A third spring (72) is provided between the telescopic rod (7) and the connecting rod (14), and two ends of the third spring (72) are respectively fixedly connected to the telescopic rod (7) and the connecting rod (14).

5. The insulating disc-shaped door according to claim 1, characterized in that: The diameter of the pressure reducing plate (3) is smaller than the diameter of the disc door (2).

6. The insulating disc-shaped door according to claim 1, characterized in that: The first inclined surfaces (13) on the two abutment blocks (12) are arranged opposite to each other.

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