Louver discharging metering valve structure for ash conveying system and metering method

Abstract

The invention discloses a shutter discharging metering valve structure for an ash conveying system and a metering method, and relates to the technical field of discharging and ash discharging conveying. Comprising an ash feeding hopper, a shutter ash discharging device arranged at a discharging port of the ash feeding hopper, a weighing module arranged below the shutter ash discharging device and used for weighing the ash feeding hopper, and a control system electrically connected with the shutter ash discharging device and the weighing module and used for receiving weight information of the weighing module. When the weight reaches a preset value, the shutter dust discharging device is controlled to discharge; the shutter dust discharging device comprises a supporting pipe body, a shutter dust discharging strip-shaped hole plate arranged on the side wall of the supporting pipe body, a shutter dust discharging rotating rod arranged on the shutter dust discharging strip-shaped hole plate, and shutter dust discharging reversing blades arranged on the shutter dust discharging rotating rod and used for blocking the discharging opening. And the driving device is arranged on the outer wall of the supporting pipe body and used for driving the shutter dust-discharging reversing blades to rotate so as to achieve discharging, and dust blockage is avoided.

Description

Technical Field

[0001] This invention relates to the field of unloading and ash conveying technology, specifically to a louvered unloading metering valve structure and metering method for ash conveying systems. Background Technology

[0002] In pneumatic ash conveying systems, the discharge valve is a key component connecting the ash silo to downstream equipment (such as loading machines and mixing equipment), undertaking the functions of sealed ash discharge and quantitative feeding. Currently, the main shortcomings of the discharge valve structure include: poor wear resistance, with the valve plate and seat easily worn by ash scouring, leading to sealing failure; non-fully sealed, allowing dust leakage from the discharge valve and easy dust accumulation on the sensor; prone to clogging, with fine ash particles easily intruding into the rotation gap, causing the valve shaft to jam; and complex and non-compact structure, requiring disassembly of the entire valve for maintenance, which is time-consuming and labor-intensive.

[0003] Therefore, it is necessary to develop and design the structure and metering method of the louvered unloading metering valve for ash conveying systems, so as to achieve automatic unloading while preventing dust blockage and leakage. This is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a louvered unloading metering valve structure and metering method for ash conveying systems, enabling automatic unloading while preventing dust blockage and leakage.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] A louvered unloading metering valve structure for an ash conveying system includes an ash inlet hopper, a louvered unloading device disposed at the outlet of the ash inlet hopper, a weighing module disposed below the louvered unloading device for weighing the ash inlet hopper, and a control system electrically connected to the louvered unloading device and the weighing module. The control system is used to receive weight information from the weighing module and control the louvered unloading device to unload when the weight reaches a preset value.

[0007] The louvered ash discharge device includes a support pipe body, a louvered ash discharge strip perforated plate disposed on the side wall of the support pipe body, a louvered ash discharge rotating rod disposed on the louvered ash discharge strip perforated plate, a louvered ash discharge reversing blade disposed on the louvered ash discharge rotating rod to block the discharge port, and a driving device disposed on the outer wall of the support pipe body to drive the louvered ash discharge reversing blade to rotate in order to achieve unloading.

[0008] Preferably, at least two louvered ash discharge rotating rods are provided, and at least two louvered ash discharge rotating rods are arranged in parallel on the louvered ash discharge strip perforated plate.

[0009] Preferably, the driving device includes a cylinder mounting plate disposed on the outer wall of the support pipe body, a guide sleeve and a valve-side guide sleeve fixedly disposed on the cylinder mounting plate, a cylinder, a guide rod and a valve-side guide rod respectively passing through the guide sleeve and the valve-side guide sleeve, and a guide rod connecting plate for fixing the guide rod and the valve-side guide rod. The output end of the cylinder abuts against the guide rod connecting plate. The valve-side guide rod is connected to a pull rod disposed at the end of the louvered ash discharge rotating rod. The pull rod has an arc-shaped structure to convert the translational motion of the valve-side guide rod into the rotation of the louvered ash discharge rotating rod.

[0010] Preferably, adjacent levers are connected by a louvered ash discharge link, and the louvered ash discharge link is connected to the valve-side guide rod via a louvered ash discharge cylinder actuation link.

[0011] Preferably, the outer wall of the support tube is further provided with a pneumatic vibrator for realizing the vibration of the ash hopper and the support tube.

[0012] Preferably, the weighing module is a weighing sensor disposed below the support tube.

[0013] Preferably, the bottom of the weighing sensor is disposed on the weighing sensor mounting plate, and the top of the weighing sensor is connected to the support tube body in sequence through the bottom support ring, the bottom support plate of the hopper, and the movable ash discharge cone. The discharge port of the movable ash discharge cone is connected to the discharge pipe. The discharge pipe is slidably connected to the weighing mounting plate connecting pipe disposed on the weighing sensor mounting plate, and the outer diameter of the discharge pipe is smaller than the inner diameter of the weighing mounting plate connecting pipe. The weighing sensor mounting plate is provided with a discharge hole for discharging material.

[0014] Preferably, the feeding tube has a feeding tube rim on its circumference, and the weighing mounting plate connecting tube has a weighing mounting plate connecting tube rim on its circumference, for circumferential sealing during the feeding process.

[0015] Preferably, the top circumference of the ash feed hopper is provided with a hopper ring edge that is slidably connected to the ash feed hopper.

[0016] This invention also discloses a louvered unloading metering method for an ash conveying system, which utilizes the louvered unloading metering valve structure described above for an ash conveying system and includes the following steps:

[0017] Feed material into the ash hopper and weigh the ash hopper.

[0018] When the weight reaches the preset value, the drive device drives the louvered ash discharge rotating rod to rotate, thereby realizing the reversal of the louvered ash discharge reversing blades and completing the unloading.

[0019] The present invention achieves the following technical effects compared to the prior art:

[0020] By setting up a louvered ash discharge device, when the control system detects that the weight information collected by the weighing module has reached the preset value, the drive device drives the louvered ash discharge rotating rod to rotate, which in turn drives the louvered ash discharge reversing blades to reverse, so that the discharge port of the ash hopper changes from a blocked state to an open state. During this process, the louvered ash discharge reversing blades will turn over with the dust inside the ash hopper, making the compacted dust loose and avoiding dust blockage. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Appendix Figure 1 This is a schematic diagram of the main view of the louvered unloading metering valve structure for an ash conveying system disclosed in this invention.

[0023] Appendix Figure 2 This is a side sectional view of the louvered unloading metering valve structure for an ash conveying system disclosed in this invention.

[0024] Appendix Figure 3 This is a side view schematic diagram of the louvered unloading metering valve structure for an ash conveying system disclosed in this invention.

[0025] Appendix Figure 4 This is a top view schematic diagram of the louvered unloading metering valve structure for an ash conveying system disclosed in this invention.

[0026] Appendix Figure 5 This is a three-dimensional structural diagram of the louvered unloading metering valve for an ash conveying system disclosed in this invention.

[0027] The components include: 1. Hopper rim; 2. Ash inlet hopper; 3. Hopper rectangular flange; 4. Cylinder; 5. Guide rod; 6. Guide sleeve; 7. Guide rod connecting plate; 8. Valve side guide sleeve; 9. Cylinder mounting plate; 10. Valve side guide rod; 11. Pneumatic vibrator; 12. Support pipe body; 13. Discharge hopper rectangular flange; 14. Movable ash discharge cone; 15. Discharge hopper bottom support plate; 16. Bottom support rim; 17. Discharge valve. 18. Round tube; 19. Round tube rim for feeding; 20. Weighing sensor mounting plate; 21. Weighing mounting plate connecting to round tube; 22. Weighing mounting plate connecting to round tube rim; 23. Louvered ash discharge strip perforated plate; 24. Louvered ash discharge reversing blade; 25. Louvered ash discharge rotating rod; 26. Pulling rod; 27. Louvered ash discharge connecting rod; 28. Louvered ash discharge cylinder actuating connecting rod; 29. ​​Weighing sensor; 30. Socket head cap screw; 31. Nut. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide a louvered unloading metering valve structure and metering method for ash conveying systems, ensuring uniform distribution of inert gas, avoiding local dead zones, and improving replacement efficiency.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] refer to Figures 1-5 The louvered unloading metering valve structure for an ash conveying system disclosed in this embodiment of the invention includes at least an ash inlet hopper 2. A louvered unloading device is provided at the outlet of the ash inlet hopper 2. A weighing module is provided below the louvered unloading device. The weighing module is used to weigh the ash inlet hopper 2. The system also includes a control system. The control system is electrically connected to the louvered unloading device and the weighing module. The control system is used to receive the weight information from the weighing module. When the weight reaches a preset value, the control system controls the louvered unloading device to unload the ash. The louvered unloading device includes a support pipe body 12 connected to the ash inlet hopper 2. A louvered unloading strip perforated plate 22 is provided on the inner side wall of the support pipe body 12. A louvered unloading rotating rod 24 is provided on the louvered unloading rotating rod 24. A louvered unloading reversing blade 23 is provided on the louvered unloading rotating rod 24. The louvered unloading reversing blade 23 can block the outlet of the ash inlet hopper 2. A drive device for rotating the louvered unloading reversing blade 23 is provided on the outer wall of the support pipe body 12.

[0032] In this embodiment, by setting up a louvered ash discharge device, when the control system detects that the weight information collected by the weighing module reaches the preset value, the drive device drives the louvered ash discharge rotating rod 24 to rotate, thereby driving the louvered ash discharge reversing blade 23 to reverse, so that the discharge port of the ash hopper 2 changes from a blocked state to an open state. During this process, the louvered ash discharge reversing blade 23 will turn over with the dust inside the ash hopper 2, making the compacted dust loose and avoiding dust blockage.

[0033] It should be noted that the louvered ash discharge strip perforated plate 22 is a rectangular structure that fits into the inner wall of the support pipe 12, the louvered ash discharge rotating rod 24 is parallel to the opposite side of the rectangular structure, and the cross-section of the ash hopper 2 is a trapezoidal structure, which facilitates the guidance of dust.

[0034] refer to Figure 4 In one embodiment, at least two louvered dust discharge rotating rods 24 are provided, and at least two louvered dust discharge rotating rods 24 are arranged in parallel on the louvered dust discharge strip plate 22. The parallel rotating rods can disperse the dust pressure to multiple support points, avoiding stress concentration at a single point. When multiple louvered dust discharge rotating rods 24 are driven synchronously, the louvered dust discharge reversing blades 23 form a wave-like disturbance trajectory, which provides more comprehensive crushing and coverage of compacted dust. The movement trajectories of adjacent louvered dust discharge reversing blades 23 have a phase difference, which can generate shear force and effectively break the dust arching effect.

[0035] refer to Figure 5 In one embodiment, the driving device includes a cylinder mounting plate 9 disposed on the outer wall of the support tube 12. A guide sleeve 6, a valve-side guide sleeve 8, and a cylinder 4 are fixedly disposed on the cylinder mounting plate 9. The outer wall of the cylinder 4 is fixedly connected to the cylinder mounting plate 9. A guide rod 5 and a valve-side guide rod 10 are respectively inserted into the guide sleeve 6 and the valve-side guide sleeve 8. A guide rod connecting plate 7 is fixedly connected to the ends of the guide rod 5 and the valve-side guide rod 10 on the side away from the cylinder 4. The output end of the cylinder 4 is fixedly connected to the guide rod connecting plate 7. The valve-side guide rod 10... The lever 25 is connected to the louvered ash discharge rotating rod 24. The lever 25 has an arc-shaped structure. When the valve side guide rod 10 moves horizontally under the drive of the cylinder 4, the valve side guide rod 10 is connected to the end of the arc-shaped structure, and the other end of the arc-shaped structure is connected to the louvered ash discharge rotating rod 24. This can convert the horizontal movement of the valve side guide rod 10 into the rotation of the louvered ash discharge rotating rod 24, thus completing the sealing and opening of the ash inlet hopper 2. The guide rod 5 can also ensure the stability of the valve side guide rod 10 during the horizontal movement.

[0036] Furthermore, cylinder 4 can be replaced with other drive components that perform the same function, such as a servo motor.

[0037] refer to Figure 4 and Figure 5In one implementation, adjacent pull rods 25 are connected by a louvered ash discharge connecting rod 26. The louvered ash discharge connecting rod 26 is connected to the valve-side guide rod 10 through a louvered ash discharge cylinder actuation connecting rod 27. The pull rods 25 are synchronously linked through the louvered ash discharge connecting rod 26 to form a multi-bar mechanism system, realizing the synchronous rotation of the louvered ash discharge rotating rod 24. This avoids the need to use multiple louvered ash discharge cylinder actuation connecting rods 27 to complete the sealing and opening of the ash hopper 2 outlet.

[0038] refer to Figure 1 and Figure 5 As a preferred method, the outer wall of the support tube 12 is also provided with a pneumatic vibrator 11 for realizing the vibration of the ash hopper 2 and the support tube 12. The pneumatic vibrator 11 is installed near the resonance node of the support tube 12 and the ash hopper 2 to improve the vibration transmission efficiency and assist in material feeding.

[0039] refer to Figures 1-5 As a preferred method, the weighing module is a weighing sensor 28 installed below the support tube 12. By installing the weighing sensor 28 below the support tube 12, the ash hopper 2 located above the support tube 12 and the support tube 12 can be weighed simultaneously. When dust enters the ash hopper 2, the weighing sensor 28 will sense the increase in dust. When the weight of the increased dust reaches a predetermined value, the feeding will stop and the material will be discharged through the louvered ash discharge device.

[0040] refer to Figures 1-5 In one implementation, the bottom of the load cell 28 is mounted on the load cell mounting plate 19 via hex socket screws 29. The top of the load cell 28 is connected to the support tube 12 via a bottom support ring 16, a hopper bottom support plate 15, and a movable ash discharge cone 14. The discharge port of the movable ash discharge cone 14 is connected to the discharge pipe 17. The discharge pipe 17 is slidably connected to the weighing mounting plate connecting pipe 20 mounted on the load cell mounting plate 19, and the outer diameter of the discharge pipe 17 is smaller than that of the weighing mounting plate connecting pipe 20. The inner diameter of the weighing sensor mounting plate 19 is provided with a material discharge hole for discharging. When dust enters the ash hopper 2, the weight is transmitted to the weighing sensor 28 in sequence through the support tube 12, the movable ash discharge cone 14, the bottom plate of the hopper 15, and the bottom ring 16. At this time, due to the increase in weight, the small material tube located below the movable ash discharge cone 14 will slide slightly downward along the inner wall of the weighing mounting plate connecting tube 20, ensuring that the gravity is fully applied to the weighing sensor 28 while the material can be discharged, thus improving the measurement accuracy.

[0041] It should be noted that the discharge tube 17 extends into the interior of the weighing mounting plate connecting tube 20 to ensure that no dust leakage occurs during unloading.

[0042] The bottom of the ash inlet hopper 2 is connected to the support pipe body 12 via the hopper rectangular flange 3 and the bottom of the support pipe body 12 is connected to the movable ash outlet cone hopper 14 via the ash outlet rectangular flange 13 and the ash outlet cone hopper 14 via the ash outlet cone hopper 30.

[0043] refer to Figures 1-5 As one implementation method, the feeding tube 17 is provided with a feeding tube rim 18 in the circumferential direction, and the weighing mounting plate connecting tube 20 is provided with a weighing mounting plate connecting tube rim 21 in the circumferential direction, for circumferential sealing during the feeding process. After the feeding tube rim 18 and the weighing mounting plate connecting tube rim 21 are put into the preset weight of dust, they abut against each other to seal the circumference of the feeding tube 17 and the weighing mounting plate connecting tube 20. When unloading, dust leakage can be further avoided.

[0044] It should be noted that both the material feeding tube edge 18 and the weighing mounting plate connecting tube edge 21 are flexible structures that can deform slightly during extrusion to ensure a sealing effect.

[0045] refer to Figures 1-5 As one implementation method, a hopper ring edge 1 is provided on the top circumference of the ash hopper 2, which is slidably connected to the ash hopper 2, so as to guide the ash hopper 2 during the process of slight up and down movement, and ensure the stability of the ash hopper 2 in support and movement.

[0046] This invention also discloses a louvered unloading metering method for an ash conveying system, which applies the louvered unloading metering valve structure for an ash conveying system as described above, and includes the following steps:

[0047] Dust from the previous stage equipment enters through the ash feed hopper 2 and is weighed by the weighing sensor 28.

[0048] When the weighing sensor 28 detects that the dust weight has reached the preset value, it transmits the signal to the control system. After analysis, the control system drives the cylinder 4 to drive the valve side guide rod 10 to move horizontally. The horizontal movement of the valve side guide rod 10 is converted into the rotation of the louvered ash discharge rotating rod 24, thereby realizing the reversal of the louvered ash discharge reversing blade 23 and completing the unloading. After the louvered ash discharge reversing blade 23 has completed unloading, the control system controls the cylinder 4 to block the outlet of the ash hopper 2 with the louvered ash discharge reversing blade 23. The unloaded dust enters the discharge pipe 17 and the weighing mounting plate connecting pipe 20 under the guidance of the movable ash discharge cone 14, and is discharged through the discharge hole set on the weighing sensor mounting plate 19.

[0049] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A louvered unloading metering valve structure for an ash conveying system, characterized in that, The device includes an ash inlet hopper, a louvered ash discharge device disposed at the outlet of the ash inlet hopper, a weighing module disposed below the louvered ash discharge device for weighing the ash inlet hopper, and a control system electrically connected to the louvered ash discharge device and the weighing module. The control system is used to receive the weight information from the weighing module and control the louvered ash discharge device to discharge material when the weight reaches a preset value. The louvered ash discharge device includes a support pipe body, a louvered ash discharge strip perforated plate disposed on the side wall of the support pipe body, a louvered ash discharge rotating rod disposed on the louvered ash discharge strip perforated plate, a louvered ash discharge reversing blade disposed on the louvered ash discharge rotating rod to block the discharge port, and a driving device disposed on the outer wall of the support pipe body to drive the louvered ash discharge reversing blade to rotate in order to achieve unloading.

2. The louvered unloading metering valve structure for an ash conveying system according to claim 1, characterized in that, At least two louvered ash discharge rotating rods are provided, and at least two of the louvered ash discharge rotating rods are arranged in parallel on the louvered ash discharge strip perforated plate.

3. The louvered unloading metering valve structure for an ash conveying system according to claim 2, characterized in that, The driving device includes a cylinder mounting plate disposed on the outer wall of the support pipe body, a guide sleeve and a valve-side guide sleeve fixedly disposed on the cylinder mounting plate, a cylinder, a guide rod and a valve-side guide rod respectively passing through the guide sleeve and the valve-side guide sleeve, and a guide rod connecting plate for fixing the guide rod and the valve-side guide rod. The output end of the cylinder abuts against the guide rod connecting plate. The valve-side guide rod is connected to a pull rod disposed at the end of the louvered ash discharge rotating rod. The pull rod has an arc-shaped structure to convert the translational motion of the valve-side guide rod into the rotation of the louvered ash discharge rotating rod.

4. The louvered unloading metering valve structure for an ash conveying system according to claim 3, characterized in that, Adjacent levers are connected by a louvered ash discharge link, which is connected to the valve-side guide rod via a louvered ash discharge cylinder actuation link.

5. The louvered unloading metering valve structure for an ash conveying system according to claim 1, characterized in that, The outer wall of the support tube is also equipped with a pneumatic vibrator for realizing the vibration of the ash hopper and the support tube.

6. The louvered unloading metering valve structure for an ash conveying system according to claim 1, characterized in that, The weighing module is a weighing sensor installed below the support tube.

7. The louvered unloading metering valve structure for an ash conveying system according to claim 6, characterized in that, The bottom of the weighing sensor is mounted on the weighing sensor mounting plate. The top of the weighing sensor is connected to the support tube in sequence through the bottom support ring, the bottom support plate of the hopper, and the movable ash discharge cone. The discharge port of the movable ash discharge cone is connected to the discharge pipe. The discharge pipe is slidably connected to the weighing mounting plate connecting pipe mounted on the weighing sensor mounting plate. The outer diameter of the discharge pipe is smaller than the inner diameter of the weighing mounting plate connecting pipe. The weighing sensor mounting plate is provided with a discharge hole for discharging materials.

8. The louvered unloading metering valve structure for an ash conveying system according to claim 7, characterized in that, The feeding tube has a feeding tube edge on its circumference, and the weighing mounting plate connecting tube has a weighing mounting plate connecting tube edge on its circumference, for circumferential sealing during the feeding process.

9. The louvered unloading metering valve structure for an ash conveying system according to claim 1, characterized in that, The top circumference of the ash feed hopper is provided with a hopper ring edge that is slidably connected to the ash feed hopper.

10. A louvered unloading metering method for an ash conveying system, employing the louvered unloading metering valve structure for an ash conveying system as described in any one of claims 1-9, characterized in that, Includes the following steps: Feed material into the ash hopper and weigh the ash hopper. When the weight reaches the preset value, the drive device drives the louvered ash discharge rotating rod to rotate, thereby realizing the reversal of the louvered ash discharge reversing blades and completing the unloading.

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