Fully-sealed flap valve

Abstract

The utility model relates to the technical field of cement production and processing, in particular to a full-sealing flap valve which comprises an ash bin, a flap valve body and a sealing box, a discharging port is formed in the bottom wall of the ash bin, and a feeding port is formed in the side wall of the end, away from the discharging port, of the ash bin; the ash bin is fixedly arranged at the top of the sealed box body, and the discharge port extends into an inner cavity of the sealed box body and is communicated with the inner cavity of the sealed box body; the flap valve body comprises a flap, a counterweight assembly, a hinge shaft and a driving assembly. The counterweight assembly is used for driving the turning plate to rotate to block the discharge hole; the driving assembly is used for driving the turning plate to rotate until the discharge port is opened; according to the full-sealed flap valve, when cement powder needs to be discharged, the driving device is started, the flap valve is controlled to be opened, the cement powder falls down from the discharging port, and discharging of the cement powder is achieved through the flap valve; and the box body is sealed, so that the sealing effect of the flap valve is conveniently improved, cement powder is prevented from leaking from the side wall of the flap valve, and the cement discharging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cement production and processing, and in particular to a fully sealed flap valve. Background Art

[0002] The flap valve is an automatic unloading device widely used in the industrial field. It adopts a conical ash bin and an angled sealing surface. It can unload ash completely without wear and without other transmission structures. It can be widely used in metallurgy, chemical industry, electric power, light industry, building materials, construction, mining, cement, grain, food, industry, engineering and other industries. It is used as an ash hopper unloading device for various environmental protection dust removal equipment and a feeding and unloading device for various equipment such as mills, dryers, dust collector ash hoppers and silos. Its appearance solves the problems of traditional valves in slow opening and closing speed, poor sealing performance, and difficult maintenance, and provides a more efficient and reliable fluid control solution for industrial production.

[0003] In the field of cement production, flap valves play an important role. Flap valves are mainly composed of valve body, flap, counterweight and drive device. The flap and counterweight are hinged by a connecting rod. In the initial state, under the gravity of the counterweight, the flap fits tightly against the inner cavity of the valve body, dividing the valve body into two layers, so that the produced cement powder is isolated in the upper layer of the valve body. When the cement powder needs to be unloaded, the drive device pushes the flap to make the flap flip against the gravity of the counterweight itself, lift the counterweight, connect the inner cavity of the valve body, and the cement falls under the influence of gravity and enters the next work section through the valve body. When the drive device stops working, the counterweight falls and the flap rotates accordingly to close the inner cavity of the valve body.

[0004] When the flap valve is working, a gap is created when the connecting rod passes through the valve body, causing cement powder to leak out from the gap between the connecting rod and the valve body during movement, thus affecting the cement unloading efficiency. Utility Model Content

[0005] In order to improve the unloading efficiency of cement, the present application provides a fully sealed flap valve.

[0006] The fully sealed flap valve provided in this application adopts the following technical solution:

[0007] A fully sealed flap valve comprises an ash bin, a flap valve body and a sealing box, wherein a discharge port is provided on the bottom wall of the ash bin, and a feed port is provided on a side wall of the ash bin away from the discharge port;

[0008] The ash bin is fixedly arranged on the top of the sealed box body, the discharge port extends into the inner cavity of the sealed box body, and the discharge port is communicated with the inner cavity of the sealed box body;

[0009] The flap valve body includes a flap, a counterweight assembly, a hinge shaft and a drive assembly; the hinge shaft is fixedly connected to the inner side wall of the sealed box body, the flap is sleeved on the hinge shaft, and the flap is rotatably connected to the hinge shaft, and the flap is located in the inner cavity of the sealed box body;

[0010] The counterweight assembly is installed in the inner cavity of the sealed box, and the counterweight assembly is used to drive the flap to rotate to block the discharge port;

[0011] The driving assembly is installed on the top wall of the ash bin, the driving assembly is arranged opposite to the discharge port, and the driving assembly is used to drive the flap to rotate until the discharge port is opened.

[0012] By adopting the above technical scheme, cement powder enters the ash bin from the feed port, the flap valve is closed, and the discharge port of the ash bin is sealed. When the cement powder needs to be unloaded, the driving device is started to drive the flap to rotate around the hinge shaft, so that the flap releases the blockage of the discharge port, and the cement powder falls from the discharge port and passes through the sealing box to enter the next work section. The opening and closing method of the flap valve body is convenient, which is convenient for unloading the cement powder.

[0013] In a specific possible implementation manner, the sealed box body includes an integrally arranged vertical portion and an adapting portion, the discharge end of the ash bin extends into the inner cavity of the vertical portion, and the vertical portion is fixedly connected to the ash bin;

[0014] The adapter part is fixedly arranged on the side wall of the vertical part, and the adapter part is communicated with the inner cavity of the vertical part; the hinge shaft is fixedly connected to the side wall of the adapter part close to the vertical part, and the counterweight assembly is located in the inner cavity of the adapter part.

[0015] By adopting the above technical solution, a sealing box is set up to improve the sealing effect of the flap valve. When the cement powder is unloaded, the flap rotates and the cement powder falls from the discharge port, preventing the cement powder from leaking from the side wall of the flap valve, thereby improving the unloading efficiency of the cement.

[0016] In a specific possible implementation mode, the counterweight assembly includes a connecting rod and a counterweight block, one end of the connecting rod is fixedly connected to one end of the flap close to the hinge shaft, and the other end is fixedly connected to the counterweight block.

[0017] By adopting the above technical solution, a counterweight assembly is set up, one end of the connecting rod is fixedly connected to the end of the flap close to the hinge axis, and the other end is fixedly connected to the counterweight block. The counterweight block is affected by gravity and applies an upward external force to the flap through the connecting rod, so that the flap rotates around the hinge rod. When the flap rotates to the maximum angle, the flap is tightly abutted against the discharge port to seal the discharge port, thereby facilitating the automatic closing of the flap valve body.

[0018] In a specific possible implementation scheme, the driving assembly includes an air cannon, which is fixedly mounted on the top wall of the ash bin, and the output end of the air cannon passes through the top wall of the ash bin and extends into the inner cavity of the ash bin, and the output end of the air cannon is arranged opposite to the flap.

[0019] By adopting the above technical solution, when it is necessary to unload the cement powder, the air cannon is started, and the air cannon sprays out high-pressure airflow, which pushes the flap downward, causing the flap to rotate around the hinge axis, and the flap drives the connecting rod to rotate, and the connecting rod lifts the counterweight block, and the flap isolates the vertical part from the adapter part. The flap valve body opens, the discharge port opens, and the cement falls under the influence of gravity, passes through the discharge port and the vertical part, and enters the next working section. When the driving device stops working, the counterweight block falls, and the flap rotates upward accordingly to close the vertical part. The set air cannon facilitates the opening of the discharge port, thereby realizing the unloading of the cement powder.

[0020] In a specific feasible implementation scheme, the horizontal cross-sectional area of ​​the discharge port gradually decreases from one end close to the top wall of the ash bin to one end away from the top wall of the ash bin; the plane where the discharge port is located is inclined, and the side of the discharge port close to the hinge axis is higher than the side of the discharge port away from the hinge axis.

[0021] By adopting the above technical scheme, the horizontal cross-sectional area of ​​the discharge port gradually decreases from one end close to the top wall of the ash bin to the end far from the top wall of the ash bin, which is convenient for increasing the pressure of the high-pressure airflow generated when the air cannon is started on the flap, thereby facilitating the rotation of the flap and realizing the unloading of cement powder; the plane where the discharge port is located is inclined, which is convenient for achieving a close fit between the flap and the discharge port, thereby improving the sealing of the flap and the discharge port.

[0022] In a specific possible implementation manner, a cleaning port is formed on the top wall of the adapter portion, and a first sealing cover is disposed on the cleaning port.

[0023] By adopting the above technical solution, when the flap valve body is opened to unload the cement powder, the cement powder may escape from the connection between the vertical part and the adapter part, and adhere to the inner wall of the sealed box body. By setting the cleaning port, the operator can open the first sealing cover, use the blowing equipment to reach into the cleaning port, blow away the cement powder on the inner wall of the adapter part, and accumulate it at the bottom of the inner cavity of the adapter part.

[0024] In a specific possible implementation scheme, the bottom wall of the adapter portion is arranged as an inclined surface, and the bottom wall of the adapter portion gradually tilts downward from one end away from the vertical portion to one end close to the vertical portion, and a collecting port is provided on the bottom wall of the sealed box body close to one end of the vertical portion, and the collecting port is located directly below the cleaning port, and a second sealing cover is arranged on the collecting port.

[0025] By adopting the above technical solution, when cement powder accumulates at the bottom of the inner cavity of the adapter, the operator opens the second sealing cover, and the cement powder falls from the collecting port through the inclined bottom wall under the influence of gravity. The operator recycles and reuses the cement powder below the collecting port, thereby improving the cement unloading efficiency.

[0026] In a specific possible implementation manner, a sealing strip is provided on the ash bin, and the sealing strip is fixedly mounted on the wall panel of the discharge port.

[0027] By adopting the above technical solution, the sealing strip is set, and when the flap abuts against the discharge port, the sealing performance between the flap and the discharge port is further improved, thereby preventing cement powder from leaking out of the gap between the flap and the discharge port, thereby facilitating improving the unloading efficiency of cement powder.

[0028] In a specific possible implementation manner, a feed pipe is fixedly provided on the ash bin, an inner cavity of the feed pipe is connected with the feed port, and the feed pipe is inclined from high to low from an end away from the ash bin to an end close to the ash bin.

[0029] By adopting the above technical solution, cement powder enters the feed port through the feed pipe and gathers in the ash bin, which facilitates the unloading of cement powder; the inclined feed pipe facilitates the cement powder to flow from the feed pipe to the ash bin.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. With the fully sealed flap valve designed, cement powder enters the ash bin from the feed port, the flap valve is closed, and the discharge port of the ash bin is sealed. When the cement powder needs to be unloaded, the drive device is started to control the flap valve to open, and the cement powder falls from the discharge port and passes through the flap valve to enter the next working section, thus realizing the unloading of the cement powder. The sealing box is set up to improve the sealing effect of the flap valve and prevent the cement powder from leaking from the side wall of the flap valve, thereby improving the unloading efficiency of the cement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of a fully sealed flap valve according to an embodiment.

[0033] Figure 2 It is a cross-sectional view of a fully sealed flap valve according to an embodiment.

[0034] Description of the drawings: 1. Ash bin; 11. Discharge port; 111. Sealing strip; 12. Feed port; 121. Feed pipe; 2. Flap valve body; 21. Flap; 22. Counterweight assembly; 221. Connecting rod; 222. Counterweight block; 23. Articulated shaft; 24. Drive assembly; 241. Air cannon; 3. Sealing box; 31. Vertical portion; 32. Adapter portion; 321. Cleaning port; 322. First sealing cover; 323. Collection port; 324. Second sealing cover. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-2 This application is described in further detail.

[0036] The embodiment of the present application discloses a fully sealed flap valve.

[0037] Reference Figure 1 and Figure 2 A fully sealed flap valve comprises an ash bin 1, a flap valve body 2 and a sealing box 3; the ash bin 1 is fixedly arranged on the top of the sealing box 3, and the ash bin 1 is communicated with the inner cavity of the sealing box 3; the flap valve body 2 is located in the sealing box 3; the sealing box 3 comprises a vertical portion 31 and an adapter portion 32, the vertical portion 31 is arranged as a cylindrical structure passing through from top to bottom, the adapter portion 32 is fixedly arranged on the side wall of the vertical portion 31, and the adapter portion 32 is communicated with the inner cavity of the vertical portion 31.

[0038] Reference Figure 2 A discharge port 11 is provided on the bottom wall of the ash bin 1, and a feed port 12 is provided on the side wall of the end of the ash bin 1 away from the discharge port 11. The feed port 12 is communicated with the inner cavity of the ash bin 1, and a feed pipe 121 is fixedly provided on the feed port 12. The feed pipe 121 is inclined downward, and cement powder enters the ash bin 1 from the feed pipe 121; the discharge port 11 extends into the top of the vertical portion 31, and the cross-sectional area of ​​the side wall of the discharge port 11 gradually decreases from one end close to the top wall of the ash bin 1 to one end away from the top wall of the ash bin 1; the end face of the discharge port 11 is inclined, and the depth of the discharge port 11 in the vertical portion 31 gradually increases from one end close to the adapter portion 32 to one end away from the adapter portion 32, and a sealing strip 111 is fixedly provided on the circumferential side wall of the discharge port 11.

[0039] Reference Figure 2The flap valve body 2 includes a flap 21, a counterweight assembly 22, a hinge shaft 23 and a drive assembly 24; the hinge shaft 23 is fixedly connected to the side wall of the adapter part 32 close to the vertical part 31, the flap 21 is sleeved on the hinge shaft 23, and the flap 21 is rotatably connected to the hinge shaft 23. When the fully sealed flap valve is closed, the flap 21 abuts against the discharge port 11 to block the discharge port 11. When the fully sealed flap valve is opened, the flap 21 separates the vertical part 31 and the adapter part 32, so that the discharge port 11 is opened, and the cement powder falls from the discharge port 11 to complete the unloading operation; the counterweight assembly 22 is fixedly connected to the flap 21, and the counterweight assembly 22 rotates around the hinge shaft 23. The counterweight assembly 22 is located in the inner cavity of the adapter part 32. The counterweight assembly 22 includes a connecting rod 221 and a counterweight block 222, one end of the connecting rod 221 is fixedly connected to one end of the flap 21 close to the hinge shaft 23, and the other end is fixedly connected to the counterweight block 222. The counterweight block 222 is acted upon by gravity to drive the connecting rod 221 to move downward, and the connecting rod 221 drives the flap 21 to rotate around the hinge shaft 23, so that the flap 21 abuts against the end of the discharge port 11, thereby realizing the automatic closure of the fully sealed flap valve; the driving assembly 24 includes an air cannon 241, which is fixedly arranged on the top wall of the ash bin 1, and the output end of the air cannon 241 passes through the top wall of the ash bin 1 and is located directly above the flap 21. When the air cannon 241 is started, the high-pressure airflow blown out by the air cannon 241 pushes the flap 21 to rotate around the hinge shaft 23, thereby realizing the opening of the discharge port 11, thereby facilitating the unloading of cement powder.

[0040] Reference Figure 2 A cleaning port 321 is provided on the top wall of the adapter portion 32, and a first sealing cover 322 is provided on the cleaning port 321; the bottom wall of the adapter portion 32 is arranged as an inclined surface, and the bottom wall of the adapter portion 32 gradually tilts downward from the end away from the vertical portion 31 to the end close to the vertical portion 31, and a collecting port 323 is provided on the bottom wall of the adapter portion 32 close to the vertical portion 31. The collecting port 323 is located directly below the cleaning port 321, and a second sealing cover 324 is provided on the collecting port 323.

[0041] The implementation principle of a fully sealed flap valve in this embodiment is as follows: cement powder enters the ash bin 1 from the feed pipe and gathers in the ash bin 1. In the initial state, the counterweight block 222 is affected by gravity and applies an upward external force to the flap 21 through the connecting rod 221, so that the flap 21 rotates around the hinge shaft 23. When the flap 21 rotates to the maximum angle, the flap 21 is tightly abutted against the discharge port 11 to block the discharge port 11. The sealing strip 1111 arranged circumferentially on the side wall of the discharge port 11 seals the gap between the flap 21 and the discharge port 11 to prevent cement powder from leaking out of the gap. When the cement powder needs to be discharged, During operation, the air cannon 241 is started, and the air cannon 241 sprays out high-pressure airflow, which pushes the flap 21 downward, causing the flap 21 to rotate around the hinge shaft 23. The flap 21 drives the connecting rod 221 to rotate, and the connecting rod 221 lifts the counterweight 222. The flap 21 isolates the vertical part 31 from the adapter part 32, and the discharge port 11 is opened. The cement falls under the influence of gravity and enters the next working section through the discharge port 11 and the vertical part 31. When the unloading is completed, the air cannon 241 stops working, the counterweight 222 falls, and the flap 21 rotates upward to close the discharge port 11, and the cement powder accumulates in the ash bin 1 again.

[0042] When the discharge port 11 is opened to discharge the cement powder, the cement powder may escape from the connection between the vertical portion 31 and the adapter portion 32 and adhere to the inner wall of the adapter portion 32. The operator opens the first sealing cover 322 and uses a blowing device to extend into the cleaning port 321 to blow away the cement powder on the inner wall of the adapter portion 32 and accumulate it at the bottom of the adapter portion 32. Then the second sealing cover 324 is opened, and the cement powder passes through the inclined bottom wall and falls from the collecting port 323 under the influence of gravity. The operator recycles and reuses the cement powder below the collecting port 323 to improve the unloading efficiency of the cement.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fully sealed flap valve, characterized in that: It comprises an ash bin (1), a flap valve body (2) and a sealing box body (3); the bottom wall of the ash bin (1) is provided with a discharge port (11); and the side wall of the ash bin (1) at one end away from the discharge port (11) is provided with a feed port (12); The ash bin (1) is fixedly arranged on the top of the sealed box body (3), the discharge port (11) extends into the inner cavity of the sealed box body (3), and the discharge port (11) is communicated with the inner cavity of the sealed box body (3); The flap valve body (2) comprises a flap (21), a counterweight assembly (22), a hinge shaft (23) and a drive assembly (24); the hinge shaft (23) is fixedly connected to the inner side wall of the sealing box (3), the flap (21) is sleeved on the hinge shaft (23), and the flap (21) is rotatably connected to the hinge shaft (23), and the flap (21) is located in the inner cavity of the sealing box (3); The counterweight assembly (22) is installed in the inner cavity of the sealed box (3), and the counterweight assembly (22) is used to drive the flap (21) to rotate to block the discharge port (11); The driving component (24) is installed on the top wall of the ash bin (1), the driving component (24) is arranged opposite to the discharge port (11), and the driving component (24) is used to drive the flap (21) to rotate until the discharge port (11) is opened.

2. A fully sealed flap valve according to claim 1, characterized in that: A fully sealed flap valve, characterized in that: the sealed box body (3) comprises an integrally arranged vertical portion (31) and an adaptor portion (32), the discharge end of the ash bin (1) extends into the inner cavity of the vertical portion (31), and the vertical portion (31) is fixedly connected to the ash bin (1); The adapter part (32) is fixedly arranged on the side wall of the vertical part (31), and the adapter part (32) is communicated with the inner cavity of the vertical part (31); the hinge shaft (23) is fixedly connected to the side wall of the adapter part (32) close to the vertical part (31), and the counterweight assembly (22) is located in the inner cavity of the adapter part (32).

3. A fully sealed flap valve according to claim 1, characterized in that: The counterweight assembly (22) comprises a connecting rod (221) and a counterweight block (222); one end of the connecting rod (221) is fixedly connected to one end of the flap (21) close to the hinge shaft (23), and the other end is fixedly connected to the counterweight block (222).

4. A fully sealed flap valve according to claim 1, characterized in that: The driving assembly (24) comprises an air cannon (241), wherein the air cannon (241) is fixedly mounted on the top wall of the ash bin (1), and an output end of the air cannon (241) passes through the top wall of the ash bin (1) and extends into the inner cavity of the ash bin (1), and the output end of the air cannon (241) is arranged directly opposite to the flap (21).

5. The fully sealed flap valve according to claim 1, characterized in that: The horizontal cross-sectional area of ​​the discharge port (11) gradually decreases from one end close to the top wall of the ash bin (1) to one end away from the top wall of the ash bin (1); the plane where the discharge port (11) is located is inclined, and the side of the discharge port (11) close to the hinge shaft (23) is higher than the side of the discharge port (11) away from the hinge shaft (23).

6. A fully sealed flap valve according to claim 2, characterized in that: The top wall of the adapter portion (32) is provided with a cleaning port (321), and a first sealing cover (322) is provided on the cleaning port (321).

7. A fully sealed flap valve according to claim 6, characterized in that: The bottom wall of the adapter portion (32) is arranged as an inclined surface, and the bottom wall of the adapter portion (32) gradually slopes downward from an end away from the vertical portion (31) to an end close to the vertical portion (31), and a collecting port (323) is provided on the bottom wall of the sealed box body (3) close to the vertical portion (31), the collecting port (323) is located directly below the cleaning port (321), and a second sealing cover (324) is arranged on the collecting port (323).

8. The fully sealed flap valve according to claim 5, characterized in that: The ash bin (1) is provided with a sealing strip (111), and the sealing strip (111) is fixedly mounted on the wall panel of the discharge port (11).

9. The fully sealed flap valve according to claim 1, characterized in that: A feed pipe (121) is fixedly arranged on the ash bin (1), the inner cavity of the feed pipe (121) is connected to the feed port (12), and the feed pipe (121) is inclined from high to low from an end away from the ash bin (1) to an end close to the ash bin (1).

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