Positive-pressure instantaneous automatic isolation flashboard for feed port of fluidized bed furnace
By designing a remote-controlled dust-proof gate and gate shell structure, the safety hazards and reliability issues when the boiling furnace feed port is under positive pressure are resolved, the stable operation and sealing of the gate are achieved, and the risks of high-temperature and high-concentration gas leakage and dust accumulation are avoided.
Patent Information
- Application Number
- CN202422732557.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In the existing technology, there is a risk of leakage of high-temperature and high-concentration sulfur dioxide gas at the boiling furnace feed port when positive pressure is applied. Manual control by the operator poses a safety hazard. The gate is inaccurately closed and easily stuck. The working environment is smoky and dusty, resulting in low reliability of the device.
A positive pressure instantaneous automatic isolation gate at the feeding port of a boiling furnace is designed. It adopts a remote-controlled dust-proof gate and gate shell structure, including components such as a control cabinet, dust-proof gate, guide grooves, guide wheels, and sealing strips to ensure stable operation and sealing of the gate.
Remote control is achieved to prevent operators from being burned by high-temperature and high-concentration sulfur dioxide gas. The gate closes accurately, enhancing the dust resistance of the device in high-dust environments and improving the reliability and safety of the device.
Smart Images
Figure CN223361081U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of safety of fluidized bed furnaces, in particular to a positive pressure instantaneous automatic isolation gate at a feed inlet of a fluidized bed furnace. Background Art
[0002] A fluidized bed furnace, also known as a fluidized bed furnace, is a device used to heat pulverized coal. It utilizes fluidization technology to place the pulverized coal in a bed and inject air or other gases to fluidize the coal within the bed, enabling heating, dry distillation, or other processing.
[0003] In the production of industrial-grade sulfuric acid, a fluidized bed furnace is required to process zinc sulfide concentrate. During use, a throwing machine is used for feeding. Since the feeding accuracy of the zinc sulfide concentrate is difficult to control and the moisture content of the zinc sulfide concentrate often fluctuates, the operating air pressure and air volume of the fluidized bed furnace are easily fluctuated. Alternatively, during use, the sulfur dioxide blower may trip during operation or the waste heat boiler may discharge ash abnormally. This often leads to the problem of positive pressure at the feed port of the fluidized bed furnace. Once the boiling furnace is under positive pressure, high-temperature and high-concentration sulfur dioxide gas instantly escapes from the feed port, accompanied by a small amount of high-temperature roasted sand and flames, which not only pollutes the environment, but also easily causes the throwing machine belt to burn, posing a large safety risk.
[0004] In the prior art, an operator needs to untie the wire rope on the wall of the fluidized bed furnace and lower the gate.
[0005] This method has the following defects: 1. There is a risk of operators being burned by high-temperature and high-concentration sulfur dioxide gas; 2. When lowering the gate, the gate is often stuck in the chute due to uneven force and cannot accurately close and seal the feed port; 3. There is a lot of smoke and dust in the working environment, and dust easily accumulates in the chute, causing the gate to get stuck in the chute.
[0006] To this end, this paper provides a positive pressure instantaneous automatic isolation gate for the feeding port of a boiling furnace. Utility Model Content
[0007] In order to solve the above technical problems, the utility model discloses a positive pressure instantaneous automatic isolation gate at the feeding port of a boiling furnace. The device can be remotely controlled, avoiding the risk of burns caused by high-temperature and high-concentration sulfur dioxide gas due to manual control by the operator; the gate operates stably when closed and can accurately fall down to seal the feeding port; the dust resistance of the control mechanism is enhanced, and the reliability of the device is improved.
[0008] In order to achieve the above-mentioned technical effects, the utility model provides a positive pressure instantaneous automatic isolation gate at the feeding port of a boiling furnace, comprising an isolation gate body and a control cabinet. The isolation gate body is arranged outside the feeding port of the boiling furnace and is directly opposite to the right side of the throwing machine. The control cabinet is arranged outside the control room of the boiling furnace and is electrically connected to the isolation gate body. The isolation gate body also includes a dust-proof gate, a gate housing, and a control mechanism. The dust-proof gate is arranged in a gate housing with a guiding function, and the control mechanism that can stably control the operation of the dust-proof gate is connected to the front end of the dust-proof gate.
[0009] Preferably, the control cabinet is provided with a button for controlling the forward and reverse rotation of the control mechanism and an emergency stop switch.
[0010] Preferably, a limiting block is provided on the outer side above the feeding port of the boiling furnace.
[0011] Preferably, the anti-dust gate also includes a fixing ring, a block, a V-shaped guide block, and a counterweight block. The fixing ring is arranged on the top of the anti-dust gate, the block is arranged below the fixing ring, the V-shaped guide blocks are respectively arranged on both sides of the anti-dust gate, and the counterweight block is arranged below the anti-dust gate.
[0012] Preferably, the top and bottom of the stopper are respectively provided with an upper limit switch and a lower limit switch.
[0013] Preferably, the gate housing further includes a guide groove, a guide wheel, a buffer block, and a sealing strip. The guide groove is arranged inside both sides of the gate housing, the guide wheel is arranged in the guide groove and matches the V-shaped guide block shape structure, the buffer block is arranged on both sides of the top of the guide groove, and the sealing strip is respectively arranged at the edges of both sides of the guide groove.
[0014] Preferably, the control mechanism also includes a guide pulley, an electric winch, and a wire rope. The guide pulley is arranged above and on the right side of the dust gate, the electric winch is arranged on the left side of the control cabinet, the front end of the wire rope is connected to the fixed ring, the middle end of the wire rope is connected to the guide pulley, and the end of the wire rope is arranged on the electric winch.
[0015] Preferably, the dust-proof gate plate also includes a rack, a block, a trapezoidal guide block, and a flexible dust removal block. The rack is respectively arranged at the top and bottom of the right side of the dust-proof gate plate, the block is arranged at the middle position of the top of the dust-proof gate plate, the trapezoidal guide block is arranged at the top and bottom of the left side of the dust-proof gate plate, and the flexible dust removal block is arranged on the left side of the trapezoidal guide block.
[0016] Preferably, the gate housing further includes a guide groove, a slag storage box a, a slag storage box b, and a sealing strip. The guide groove is arranged at the top and bottom of the gate housing and matches the trapezoidal guide block shape structure. The slag storage box a is arranged at the lower left side of the gate housing, and the slag storage box b is arranged at the lower rear of the gate housing. The sealing strips are respectively arranged at the edges of the guide grooves.
[0017] Preferably, the control mechanism further includes gears and a drive motor. The gears are respectively arranged at the top and bottom of the right side of the gate housing and mesh with the rack. The drive motors are respectively arranged at the top and bottom of the right side of the gate housing and the output ends are connected to the gears.
[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0019] The device uses a control mechanism and a control cabinet to remotely control the gate, avoiding the risk of burns from high-temperature and high-concentration sulfur dioxide gas caused by manual control by the operator; the guide gate housing and the control mechanism can ensure the stable operation of the dust-proof gate, so that the dust-proof gate can operate accurately when opening and closing; the dust-proof gate and the gate housing use a structure that is highly adaptable to environments with high dust content, which enhances the dust-proof ability of the control mechanism and improves the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a side view of embodiment 1 of the present utility model;
[0021] Figure 2 yes Figure 1 Partial schematic diagram of a;
[0022] Figure 3 1 is a front view of Example 1 of the present utility model;
[0023] Figure 4 This is a front view of the dust-proof gate plate and the gate housing in Example 1 of the present utility model;
[0024] Figure 5 yes Figure 4 Cross-sectional view along section b;
[0025] Figure 6 It is a front view of embodiment 2 of the present utility model;
[0026] Figure 7 yes Figure 6 A cross-sectional view along section c;
[0027] Figure 8 It is a top view of Example 2 of the present utility model;
[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0029] 1. Control cabinet; 2. Boiling furnace feed port; 3. Feeder; 4. Limit block; 5. Fixing ring; 6. Stop block; 7. V-shaped guide block; 8. Counterweight; 9. Upper limit switch; 10. Lower limit switch; 11. Guide groove; 12. Guide wheel; 13. Buffer block; 14. Sealing strip; 15. Guide pulley; 16. Electric winch; 17. Wire rope; 18. Rack; 19. Trapezoidal guide block; 20. Flexible dust removal block; 21. Slag box a; 22. Slag box b; 23. Gear; 24. Drive motor. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.
[0031] like Figures 1 to 8 As shown, the prior art in this embodiment has the following problems: The inventors have discovered that the prior art has the following defects: First, there is a risk of burns to the operator by the high-temperature and high-concentration sulfur dioxide gas; Second, when the gate plate is lowered, the gate plate often gets stuck in the chute due to uneven force, and the feed port cannot be accurately closed and sealed; Third, the working environment is very dusty, and dust easily accumulates in the chute, causing the gate plate to get stuck in the chute;
[0032] Therefore, the inventor provides a positive pressure instantaneous automatic isolation gate at the feeding port of a boiling furnace, including an isolation gate body and a control cabinet 1. The isolation gate body is arranged on the outside of the feeding port 2 of the boiling furnace and is directly opposite to the right side of the throwing machine 3. The control cabinet 1 is arranged outside the control room of the boiling furnace and is electrically connected to the isolation gate body; the isolation gate body also includes a dust-proof gate, a gate housing, and a control mechanism. The dust-proof gate is arranged in a gate housing with a guiding function, and the control mechanism that can stably control the operation of the dust-proof gate is connected to the front end of the dust-proof gate.
[0033] By adopting the above scheme, when the boiling furnace emits positive pressure, the on-site operator controls the control mechanism through the control cabinet 1 to start remote control, avoiding the risk of burns caused by high-temperature and high-concentration sulfur dioxide gas due to manual control by the operator; the control mechanism drives the dust-proof gate to close, and the gate operates stably when closed, and can accurately fall down to seal the feed inlet; the dust-proof gate is sealed to the gate shell to isolate the flue gas gushing out of the boiling furnace. After the pressure in the boiling furnace returns to normal, the control mechanism is controlled by the control cabinet 1 to drive the dust-proof gate to open, and the normal use of the throwing machine 3 and the boiling furnace is restored. During the operation of the device, the dust-proof gate enhances the dust-proof ability of the control mechanism and improves the reliability of the device.
[0034] Furthermore, the control cabinet 1 is provided with a button for controlling the forward and reverse rotation of the control mechanism and an emergency stop switch (not shown in the figure);
[0035] The control cabinet 1 can be opened and closed by a button control device, and the emergency stop button can stop the device in an emergency. Example 1
[0036] like Figures 1 to 5 As shown;
[0037] Furthermore, a limiting block 4 is provided on the outer side above the feeding port 2 of the fluidized bed furnace;
[0038] The limit block 4 can prevent the electric winch 16 from overwinding.
[0039] Furthermore, the anti-dust gate further includes a fixing ring 5, a stopper 6, a V-shaped guide block 7, and a counterweight 8. The fixing ring 5 is arranged on the top of the anti-dust gate, the stopper 6 is arranged below the fixing ring 5, the V-shaped guide blocks 7 are respectively arranged on both sides of the anti-dust gate, and the counterweight 8 is arranged below the anti-dust gate;
[0040] Among them, the fixed ring 5 is connected to the control mechanism, the block 6 is used to limit the falling of the dust-proof gate and provide support for the gate that falls to the bottom. The V-shaped guide block 7 stabilizes the trajectory of the dust-proof gate when it falls and rises, and the counterweight block 8 can provide a stable descending posture for the falling of the dust-proof gate.
[0041] Furthermore, an upper limit switch 9 and a lower limit switch 10 are respectively provided at the top and bottom of the stopper 6;
[0042] Among them, the upper limit switch 9 cooperates with the limit block 4 to control the rising height of the anti-dust gate to prevent the electric winch 16 from overwinding, and at the same time provide a buffer to slow down the collision between the block 6 and the limit block 4. The lower limit switch 10 can slow down the impact of the anti-dust gate on the gate casing when it falls, and at the same time control the descending height of the anti-dust gate to prevent the electric winch 16 from overwinding.
[0043] Furthermore, the gate housing further includes a guide groove 11, a guide wheel 12, a buffer block 13, and a sealing strip 14. The guide groove 11 is arranged inside both sides of the gate housing, the guide wheel 12 is arranged in the guide groove 11 and matches the outer structure of the V-shaped guide block 7, the buffer block 13 is arranged on both sides of the top of the guide groove 11, and the sealing strip 14 is respectively arranged at the edges of both sides of the guide groove 11;
[0044] Among them, the guide wheel 12 arranged in the guide groove 11 matches the external structure of the V-shaped guide block 7. The V-shaped guide block 7 slides in the guide wheel 12, which improves the stability of the dust gate when it descends. The buffer block 13 can slow down the collision of the dust gate with the top of the guide groove 11 when it falls and reduce the noise generated. The sealing strips 14 arranged on the edges of both sides of the guide groove 11 can prevent high-temperature flue gas from escaping from the gap between the dust gate and the guide groove 11.
[0045] Furthermore, the control mechanism also includes a guide pulley 15, an electric winch 16, and a wire rope 17. The guide pulley 15 is arranged above and on the right side of the dust gate, the electric winch 16 is arranged on the left side of the control cabinet 1, the front end of the wire rope 17 is connected to the fixing ring 5, the middle end of the wire rope 17 is connected to the guide pulley 15, and the end of the wire rope 17 is arranged on the electric winch 16;
[0046] Among them, the electric winch 16 drives the wire rope 17 to slide on the guide pulley 15. The electric winch 16 is tightened and released, so that the length of the wire rope 17 on the guide pulley 15 changes, and then the rise and fall of the dust-proof gate connected to the fixed ring 5 at the end of the wire rope 17 is controlled, and the remote control of the device is completed. Remote control avoids the risk of burns caused by high-temperature and high-concentration sulfur dioxide gas due to manual control by the operator. Moreover, this structure cooperates with the gate housing to make the dust-proof gate run stably when closed, and accurately fall and seal, while improving the overall dust resistance of the device and improving the reliability of the device. Example 2
[0047] like Figures 6 to 8 As shown;
[0048] Furthermore, the anti-dust gate further includes a rack 18, a stopper 6, a trapezoidal guide block 19, and a flexible dust removal block 20. The rack 18 is respectively arranged at the top and bottom of the right side of the anti-dust gate, the stopper 6 is arranged at the middle position of the top of the anti-dust gate, the trapezoidal guide block 19 is arranged at the top and bottom of the left side of the anti-dust gate, and the flexible dust removal block 20 is arranged on the left side of the trapezoidal guide block 19;
[0049] Among them, the control mechanism controls the left and right movement of the anti-dust gate through the rack 18 to achieve the effect of opening and closing the gate. The block 6 can limit the moving stroke of the anti-dust gate. The trapezoidal guide block 19 can slide in the guide groove 11. The flexible dust removal block 20 can push out the dust accumulated in the guide groove 11 in advance when the trapezoidal guide block 19 slides forward to prevent dust from getting stuck in the anti-dust gate.
[0050] Furthermore, the gate housing further includes a guide groove 11, a slag storage box a21, a slag storage box b22, and a sealing strip 14. The guide groove 11 is provided at the top and bottom of the gate housing and matches the outer structure of the trapezoidal guide block 19. The slag storage box a21 is provided at the lower left side of the gate housing, and the slag storage box b22 is provided at the lower rear of the gate housing. The sealing strip 14 is provided at the edges of the guide groove 11.
[0051] Among them, the guide groove 11 structure matches the trapezoidal guide block 19 structure, which facilitates the sliding of the dust-proof valve plate in the guide groove 11. The slag box a21 can receive the dust pushed out by the flexible dust removal block 20 in the guide groove 11. The slag box b22 can store the dust ejected from the boiling furnace under positive pressure to prevent excessive dust accumulation on the inside of the dust-proof gate plate. The sealing strip 14 can increase the sealing between the dust-proof gate plate and the guide shell, and can prevent high-temperature flue gas from escaping from the gap between the dust-proof gate plate and the guide groove 11, thereby enhancing the dust-proof ability of the control mechanism and improving the reliability of the device.
[0052] Furthermore, the control mechanism also includes a gear 23 and a drive motor 24. The gear 23 is respectively arranged at the top and bottom of the right side of the gate housing and meshes with the rack 18. The drive motor 24 is respectively arranged at the top and bottom of the right side of the gate housing and the output end is connected to the gear 23.
[0053] Among them, the control cabinet 1 can control the operation of the drive motor 24, drive the gear 23 to rotate, and at the same time move the dust-proof gate left and right, so as to achieve the function of remote gate opening and closing, avoiding the risk of burns caused by high-temperature and high-concentration sulfur dioxide gas due to manual control by the operator; at the same time, the structure can balance and offset the force on the gate, so that the gate can operate accurately when opening and closing.
[0054] In summary, the device adopts the control mechanism and the control cabinet 1 to remotely control the gate, avoiding the risk of burns caused by high-temperature and high-concentration sulfur dioxide gas due to manual control by the operator; the guide gate housing and the control mechanism can ensure the stable operation of the dust-proof gate, so that the gate can operate accurately when opening and closing; the dust-proof gate and the gate housing use a structure with strong adaptability to environments with high dust content, which enhances the dust-proof ability of the control mechanism and improves the reliability of the device.
[0055] The working principle of this utility model:
[0056] In Example 1, when the boiling furnace is under positive pressure, the on-site operator controls the electric winch 16 to start by pressing a button on the control cabinet 1. The electric winch 16 drives the steel wire rope 17 on the guide pulley 15 to loosen. The steel wire rope 17 releases the dust gate through the fixing ring 5 and drops. The V-shaped guide blocks 7 on both sides of the dust gate fall downward along the guide wheels 12 in the guide grooves 11 in the gate housing. This avoids the risk of burns caused by high-temperature and high-concentration sulfur dioxide gas caused by manual control by the operator. In addition, this structure is less affected by dust, enhances the dust resistance of the control mechanism, and improves the reliability of the device.
[0057] The counterweight block 8 can add weight to the falling dust gate to provide a stable descending posture. This structure can ensure the stable operation of the dust gate and enable the dust gate to operate accurately when opening and closing;
[0058] After the dust damper is closed and the flue gas gushing out of the feeding port 2 of the fluidized bed furnace is cut off, the limit switch under the stopper 6 buffers the impact between the stopper 6 and the gate housing, preventing the electric winch 16 from overwinding. At the same time, the buffer blocks 13 on both sides above the guide groove 11 also slow down the collision between the dust damper and the guide groove 11, reducing the noise generated by the collision. The sealing strips 14 arranged on both sides of the guide groove 11 can prevent the high-temperature flue gas from escaping from the gap between the dust damper and the guide groove 11.
[0059] After the boiling furnace pressure returns to normal, the on-site operator controls the electric winch 16 to start through the button on the control cabinet 1. The electric winch 16 drives the wire rope 17 on the guide pulley 15 to tighten. The wire rope 17 releases the dust gate through the fixed ring 5 and rises. The V-shaped guide blocks 7 on both sides of the dust gate rise along the guide wheels 12 in the guide grooves 11 in the gate shell. After the dust gate rises to the opening height, the upper limit switch 9 collides with the limit block 4. The upper limit switch 9 provides a buffer, which limits the height of the dust gate and prevents the electric winch 16 from overwinding. It will be reactivated when the boiling furnace is under positive pressure next time.
[0060] In Example 2, when the boiling furnace emits positive pressure, the on-site operator controls the drive motor 24 to start through the control button on the control cabinet 1. The drive motor 24 drives the gear 23 to rotate, and the gear 23 drives the rack 18 to move so that the dust gate can move to the left. While the rack 18 at the right end of the dust gate moves to the left under the drive of the gear 23, the trapezoidal guide block 19 at the left end of the dust gate slides to the left in the guide groove 11. The flexible dust removal block 20 at the front end of the trapezoidal guide block 19 pushes the dust accumulated in the guide groove 11 forward until the gate is closed, avoiding the risk of burns caused by high-temperature and high-concentration sulfur dioxide gas due to manual control by the operator. In addition, this structure can ensure the stable operation of the dust gate and enable the gate to operate accurately when opening and closing.
[0061] At this time, the flexible dust removal block 20 pushes the dust into the slag storage box a21, and the stopper 6 on the dust-proof gate is stuck outside the gate housing, limiting the movement of the dust-proof gate and isolating the flue gas gushing out of the boiling furnace feed port 2. The sealing strips 14 around the guide groove 11 can seal the dust-proof gate and the gate housing to prevent the escape of high-temperature flue gas. During the closing process of the dust-proof gate, the dust ejected from the boiling furnace feed port 2 is blocked by the dust-proof gate, falls along the dust-proof gate, and falls onto the inclined surface of the sealing strip 14, and then falls into the slag storage box b22, preventing excessive dust from accumulating on the inner side of the dust-proof gate. This structure enhances the dust-proof ability of the control mechanism and improves the reliability of the device.
[0062] After the boiling furnace pressure returns to normal, the on-site operator controls the drive motor 24 to start through the control button on the control cabinet 1. The drive motor 24 drives the gear 23 to rotate, and the gear 23 drives the rack 18 to move so that the dust gate can move to the right. While the rack 18 at the right end of the dust gate moves to the right driven by the gear 23, the trapezoidal guide block 19 at the left end of the dust gate slides to the right in the guide groove 11. After reaching the set position, the drive motor 24 stops automatically. At this time, the valve is open and will be reactivated until the next time the boiling furnace has positive pressure.
[0063] At this point, the operation of the device is completed.
[0064] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0065] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A positive pressure instantaneous automatic isolation gate at the feed inlet of a fluidized bed furnace, comprising an isolation gate body and a control cabinet (1), wherein the isolation gate body is arranged outside the feed inlet (2) of the fluidized bed furnace and is directly opposite to the right side of the throwing machine (3), and the control cabinet (1) is arranged outside the control room of the fluidized bed furnace and is connected to the isolation gate body by telecommunication, characterized in that: The isolation gate body also includes a dust-proof gate, a gate shell, and a control mechanism. The dust-proof gate is arranged in the gate shell with a guiding function, and the control mechanism that can stably control the operation of the dust-proof gate is connected to the front end of the dust-proof gate.
2. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: The control cabinet (1) is provided with a button for controlling the forward and reverse rotation of the control mechanism and an emergency stop switch.
3. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: A limiting block (4) is provided on the outer side above the boiling furnace feed port (2).
4. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: The anti-dust gate further comprises a fixing ring (5), a stopper (6), a V-shaped guide block (7), and a counterweight (8). The fixing ring (5) is arranged on the top of the anti-dust gate, the stopper (6) is arranged below the fixing ring (5), the V-shaped guide blocks (7) are respectively arranged on both sides of the anti-dust gate, and the counterweight (8) is arranged below the anti-dust gate.
5. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 4, characterized in that: The top and bottom of the stopper (6) are respectively provided with an upper limit switch (9) and a lower limit switch (10).
6. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: The gate housing further comprises a guide groove (11), a guide wheel (12), a buffer block (13), and a sealing strip (14). The guide groove (11) is arranged inside both sides of the gate housing. The guide wheel (12) is arranged in the guide groove (11) and matches the outer structure of the V-shaped guide block (7). The buffer block (13) is arranged on both sides of the top of the guide groove (11). The sealing strip (14) is respectively arranged at the edges of both sides of the guide groove (11).
7. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: The control mechanism further includes a guide pulley (15), an electric winch (16), and a wire rope (17). The guide pulley (15) is arranged above and on the right side of the dust-proof gate, the electric winch (16) is arranged on the left side of the control cabinet (1), the front end of the wire rope (17) is connected to the fixing ring (5), the middle end of the wire rope (17) is connected to the guide pulley (15), and the end of the wire rope (17) is arranged on the electric winch (16).
8. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: The anti-dust gate further comprises a rack (18), a stopper (6), a trapezoidal guide block (19), and a flexible dust removal block (20), wherein the rack (18) is respectively arranged at the top and bottom of the right side of the anti-dust gate, the stopper (6) is arranged at the middle position of the top of the anti-dust gate, the trapezoidal guide block (19) is arranged at the top and bottom of the left side of the anti-dust gate, and the flexible dust removal block (20) is arranged on the left side of the trapezoidal guide block (19).
9. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: The gate housing further comprises a guide groove (11), a slag storage box a (21), a slag storage box b (22), and a sealing strip (14). The guide groove (11) is arranged at the top and bottom of the gate housing and matches the outer structure of the trapezoidal guide block (19). The slag storage box a (21) is arranged at the lower left side of the gate housing, and the slag storage box b (22) is arranged at the lower rear of the gate housing. The sealing strip (14) is respectively arranged at the edges of the guide groove (11).
10. The instantaneous automatic positive pressure isolation gate for a fluidized bed furnace feed port according to claim 1, characterized in that: The control mechanism further includes a gear (23) and a drive motor (24). The gear (23) is respectively arranged at the top and bottom of the right side of the gate housing and meshes with the rack (18). The drive motor (24) is respectively arranged at the top and bottom of the right side of the gate housing and its output end is connected to the gear (23).