A biomass ash closed conveying device for a paper-faced gypsum board production line

Abstract

This invention relates to the field of gypsum board production equipment technology, specifically disclosing a closed-loop biomass ash conveying device for a gypsum board production line. The device includes a conveying mechanism, a dividing mechanism, and an inclined chute connected in sequence. The conveying mechanism has a closed conveying channel for continuously conveying biomass ash from the ash source to the dividing mechanism. The dividing mechanism quantitatively divides the continuous ash flow into uniform grids and outputs it in a low-pulsation manner. The high end of the chute connects to the outlet of the dividing mechanism, and the low end connects to the clinker cutter, guiding the biomass ash into the calcined gypsum powder. These three components constitute a fully closed conveying path from the ash source to the clinker cutter. This invention solves the problems of dust generation and uneven feeding in traditional conveying methods by using fully sealed conveying and quantitative dividing feeding, achieving a continuous and stable quantitative supply of biomass ash while maintaining a clean production environment.

Description

Technical Field

[0001] This invention relates to the technical field of paper-faced gypsum board production equipment, specifically to a closed conveying device for biomass ash in a paper-faced gypsum board production line. Background Technology

[0002] In the production of paper-faced gypsum board, the ash produced after the combustion of biomass fuel (i.e., biomass ash) is used as an active mixing material and is usually recycled and added to calcined gypsum powder to adjust product performance. Traditional conveying methods mostly use open screw conveyors or pneumatic conveying pipelines. The basic principle is to use mechanical rotation or positive pressure airflow to push the ash material to move in the channel and finally unload it into the clinker cutter.

[0003] However, biomass ash has a fine particle size and light weight, making it prone to generating dust during conveying and at the cutter joint. This not only deteriorates the workshop environment but also causes material loss and composition fluctuations. In addition, the unstable flow rate of the continuously conveyed ash results in inconsistent amounts of ash mixed with calcined gypsum powder, directly affecting the setting time of gypsum board and the uniformity of finished product strength.

[0004] To address the issues of dust generation and uneven feeding, existing improvement solutions mainly include: adding sealing strips at the joints of the conveyor casing, installing local dust hoods at the material drop points, and installing rotary airlock valves or gate valves at the discharge end to attempt to cut off airflow and coarsely control the flow rate. However, sealing strips will still leak after long-term wear, and dust hoods can only suck up scattered dust at the end, failing to achieve dust-free conveying throughout the entire process from the root cause. Although rotary airlock valves can play a certain role in locking airflow, their feeding is a continuous flow, lacking the ability to separate and homogenize the dust flow, and the output is still accompanied by obvious flow pulsation, making it difficult to meet the process requirements of gypsum board production lines for "continuous, quantitative, and stable" trace additives. Summary of the Invention

[0005] The purpose of this invention is to provide a closed conveying device for biomass ash in a paper-faced gypsum board production line, so as to solve the problems in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] A closed biomass ash conveying device for a paper-faced gypsum board production line includes an ash conveying mechanism, a dividing mechanism, and a chute connected in sequence.

[0008] The ash conveying mechanism has a sealed conveying channel to continuously convey biomass ash from the upstream ash source to the downstream in a sealed manner;

[0009] The feed inlet of the dividing mechanism is connected to the discharge outlet of the ash conveying mechanism, which is used to quantitatively divide the continuously entering biomass ash into uniform grids and output it in a pulse manner.

[0010] The chute is inclined, with its high-end inlet connected to the discharge port of the dividing mechanism and its low-end outlet used to dock with the clinker cutter to introduce the separated biomass ash into the calcined gypsum powder.

[0011] The ash conveying mechanism, the dividing mechanism, and the chute together form a fully enclosed conveying path from the ash source to the clinker cutter, so as to achieve continuous and quantitative supply of biomass ash under dust-free conditions.

[0012] Furthermore, the ash conveying mechanism includes a sealing shell, in which a first rotating shaft is rotatably mounted. The first rotating shaft is provided with spiral blades along the axial direction. An ash inlet is provided above one end of the sealing shell, and an ash outlet is provided below the other end.

[0013] A first motor is also provided at one end of the sealing shell near the ash inlet, and the first motor is drivenly connected to the first rotating shaft.

[0014] An emergency ash outlet is also provided at one end of the sealing shell near the ash outlet, and an openable and closable partition is provided at both the emergency ash outlet and the ash outlet.

[0015] Furthermore, the sealing shell of the ash conveying mechanism is a fully enclosed tubular shell, and a predetermined gap is maintained between its inner wall and the spiral blade.

[0016] Furthermore, the dividing mechanism includes a housing, a feed inlet at the top of the housing with a cover having an opening, a discharge outlet at the bottom of the housing, a second rotating shaft inside the housing with impeller blades on the second rotating shaft, a flow guide at the discharge outlet of the housing, and the second rotating shaft being driven by an external second motor.

[0017] Furthermore, when the compartment mechanism is under maintenance or blocked, the partition is moved to close the ash outlet and open the emergency ash outlet to achieve emergency discharge of biomass ash.

[0018] Furthermore, the impeller blades in the segmentation mechanism are multiple blades evenly distributed at equal angles along the circumference of the second rotating shaft, which are used to divide the continuously entering biomass ash into equal-volume compartments to achieve quantitative, continuous feeding with minimal pulsation.

[0019] Furthermore, the chute includes an inclined trough body, with an inlet at the upper end of the trough body that connects to the discharge port of the dividing mechanism; and an outlet at the lower end of the trough body that connects to a clinker cutter to introduce biomass ash into calcined gypsum powder.

[0020] Furthermore, the chute is inclined relative to the horizontal plane, and the inclination angle is sufficient to allow the biomass ash to slide smoothly to the outlet under its own weight, and the inner bottom surface of the chute is provided with a wear-resistant lining plate.

[0021] Furthermore, the ash conveying mechanism and the dividing mechanism are controlled by an electronic control system to start, stop and rotate. The electronic control system includes a host computer operation module and a field manual operation module.

[0022] Furthermore, the ash conveying mechanism and the dividing mechanism are controlled by an electronic control system to start, stop and rotate. The electronic control system includes a host computer operation module and a field manual operation module.

[0023] Furthermore, the host computer operation module of the electrical control system is connected to the first motor and the second motor via a PLC controller, and automatically adjusts the speed of the ash conveying mechanism and the dividing mechanism according to the instantaneous load current of the clinker reamer.

[0024] Compared with the prior art, this application has the following advantages:

[0025] By sequentially connecting the ash conveying mechanism, the dividing mechanism, and the chute, a fully enclosed conveying path is constructed from the ash source to the clinker cutter. The sealed channel of the ash conveying mechanism enables continuous, leak-free conveying of biomass ash. The dividing mechanism quantitatively divides the continuous ash flow into uniform grids and outputs it in a low-pulsation manner. Then, it is smoothly introduced into the calcined gypsum powder by gravity through the inclined chute. This solves the problems of dust generation and uneven feeding in traditional conveying. While maintaining a clean production environment, it achieves a quantitative supply of biomass ash. Attached Figure Description

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0028] Figure 2 This is a top view of the structure according to an embodiment of the present invention.

[0029] Figure 3 Embodiments of the present invention Figure 3 A schematic diagram of the AA-plane cross-sectional structure.

[0030] Figure 4 This is a side view of the structure according to an embodiment of the present invention.

[0031] Figure 5 Embodiments of the present invention Figure 2 A magnified structural diagram of part A.

[0032] Figure 6 Embodiments of the present invention Figure 4 A magnified structural diagram of part B.

[0033] The labels in the diagram represent the following:

[0034] 11. Ash conveying mechanism; 12. Dividing mechanism; 13. Chute;

[0035] 111. Sealing shell; 112. First rotating shaft; 113. Spiral blade; 114. Ash inlet; 115. Ash outlet; 116. First motor; 117. Emergency ash outlet; 118. Partition;

[0036] 121. Feed inlet; 122. Discharge outlet; 123. Cover; 124. Second rotating shaft; 125. Impeller blade; 126. Flow guide; 127. Casing; 128. Second motor;

[0037] 131. Tank; 132. Inlet; 133. Outlet. Detailed Implementation

[0038] 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.

[0039] like Figures 1 to 6 As shown, this embodiment provides a closed biomass ash conveying device for a paper-faced gypsum board production line, including an ash conveying mechanism 11, a dividing mechanism 12, and a chute 13 connected in sequence.

[0040] Specifically, the ash conveying mechanism 11 has a closed conveying channel to continuously convey biomass ash from the upstream ash source to the downstream in a sealed manner.

[0041] The feed inlet of the dividing mechanism 12 is connected to the discharge outlet of the ash conveying mechanism 11, which is used to quantitatively divide the continuously entering biomass ash into uniform grids and output it in a pulsed manner.

[0042] The chute 13 is inclined, with its high-end inlet connected to the outlet of the dividing mechanism 12, and its low-end outlet used to dock with the clinker cutter to introduce the separated biomass ash into the calcined gypsum powder.

[0043] Thus, the ash conveying mechanism 11, the dividing mechanism 12, and the chute 13 together form a fully enclosed conveying path from the ash source to the clinker cutter, thereby achieving continuous and quantitative supply of biomass ash under dust-free conditions.

[0044] More specifically, such as Figure 3 The ash conveying mechanism 11 includes a sealing shell 111, a first rotating shaft 112 is rotatably installed inside the sealing shell 111, a spiral blade 113 is provided on the first rotating shaft 112 along the axial direction, an ash inlet 114 is provided above one end of the sealing shell 111, and an ash outlet 115 is provided below the other end.

[0045] A first motor 116 is also provided at one end of the sealing shell 111 near the ash inlet 114, and the first motor 116 is drivenly connected to the first rotating shaft 112.

[0046] In this embodiment, the sealing shell 111 is a fully enclosed tubular shell, and a predetermined gap is maintained between its inner wall and the spiral blade 113. Because the fully enclosed tubular shell cooperates with the spiral blade, the biomass ash is confined in a closed space during the transportation process, avoiding ash leakage and dust pollution. At the same time, the continuous rotation of the spiral blade ensures that the supply of ash from the source to the downstream is uninterrupted.

[0047] Furthermore, such as Figure 5 and Figure 6 As shown, an emergency ash outlet 117 is also provided at one end of the sealing shell 111 near the ash outlet 115, and an openable and closable partition 118 is provided at the emergency ash outlet 117 and the ash outlet 115.

[0048] In order to cope with abnormal operating conditions such as downstream equipment maintenance or blockage, the movable partition 118 closes the ash outlet 115 and opens the emergency ash outlet 117, which can realize the emergency discharge of biomass ash, thereby avoiding the shutdown of the entire production line due to blockage and improving the operational reliability of the system.

[0049] Furthermore, a dust removal system (not shown in the figure) is installed at the emergency ash discharge port 117. The dust removal system is connected to the discharge end of the emergency ash discharge port 117 via a pipeline and is equipped with an induced draft fan and a filter device. When the emergency ash discharge port 117 is opened, the dust removal system starts simultaneously, performing negative pressure suction and filtration to collect the discharged biomass ash, preventing local dust pollution caused by the instantaneous discharge of a large amount of ash. Since this dust removal system only operates in emergency situations, it, together with the sealing shell 111 of the ash conveying mechanism 11 and the chute 13, constitutes a complete dust control system. Even in the event of abnormal emissions, the on-site environment can still be kept clean, avoiding secondary dust problems caused by emergency operations, and further ensuring the hygiene and safety of the working environment around the paper-faced gypsum board production line.

[0050] Regarding the partitioning mechanism 12, such as Figure 3It includes a housing 127, a feed inlet 121 at the top of the housing 127, a cover 123 with an opening at the feed inlet 121, a discharge outlet 122 at the bottom of the housing 127, a second rotating shaft 124 inside the housing 127, an impeller blade 125 on the second rotating shaft 124, a flow guide shroud 126 at the discharge outlet 122 of the housing 127, and the second rotating shaft 124 is driven by an external second motor 128.

[0051] In this embodiment, the impeller blades 125 are a multi-blade structure that is evenly distributed at equal angles along the circumference of the second rotating shaft 124.

[0052] When the second motor 128 drives the impeller to rotate, the biomass ash that continuously falls into the casing is sequentially divided into equal-volume material compartments by the impeller, thereby transforming the continuous ash flow brought by the screw conveyor into a quantitative and uniform material compartment output.

[0053] The guide hood 126 collects and guides the discharged material, reducing the impact and pulsation during unloading, making the ash flow into the chute more stable, and providing stable quantitative feeding conditions for the subsequent uniform mixing with calcined gypsum powder.

[0054] Furthermore, the chute 13 includes an inclined trough 131, with an inlet 132 at the upper end of the trough 131, which connects to the discharge port of the dividing mechanism 12; and an outlet 133 at the lower end of the trough 131, which connects to the clinker cutter to introduce biomass ash into calcined gypsum powder.

[0055] The tank 131 is inclined relative to the horizontal plane, and its inclination angle is sufficient to allow the biomass ash to slide smoothly to the outlet under its own weight.

[0056] Because it adopts an inclined gravity flow method, the chute can transfer ash material without additional power. In addition, the inner bottom surface of the chute body 131 is equipped with a wear-resistant liner, which can effectively reduce the wear of ash material on the bottom of the chute during long-term operation, and ensure the sealing integrity and long service life of the conveying channel.

[0057] In addition, the ash conveying mechanism 11 and the dividing mechanism 12 are controlled by an electronic control system to start, stop and rotate. The electronic control system includes a host computer operation module and a field manual operation module.

[0058] Specifically, the host computer operation module is connected to the first motor 116 and the second motor 128 via a PLC controller, and automatically adjusts the speed of the ash conveying mechanism 11 and the dividing mechanism 12 according to the instantaneous load current of the clinker reamer.

[0059] This electronic control configuration allows for both on-site manual intervention and real-time monitoring of downstream load changes via a host computer. This enables dynamic adjustment of conveying and sorting speeds, ensuring that the supply of biomass ash always matches the actual needs of the production line. It maintains continuous and quantitative operation within a closed path, further enhancing the system's automation level and operational stability.

[0060] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of the embodiments of the present invention.

Claims

1. A closed conveying device for biomass ash in a paper-faced gypsum board production line, characterized in that, It includes a conveying mechanism (11), a dividing mechanism (12), and a chute (13) connected in sequence. The ash conveying mechanism (11) has a closed conveying channel to continuously convey biomass ash from the upstream ash source to the downstream in a sealed manner; The feed inlet of the dividing mechanism (12) is connected to the discharge outlet of the ash conveying mechanism (11) to quantitatively divide the continuously entering biomass ash into uniform grids and output it in a pulsed manner. The chute (13) is inclined, with its high-end inlet connected to the outlet of the dividing mechanism (12) and its low-end outlet used to dock with the clinker cutter to introduce the separated biomass ash into the calcined gypsum powder. The ash conveying mechanism (11), the dividing mechanism (12) and the chute (13) together form a closed conveying path from the ash source to the clinker cutter, so as to achieve continuous and quantitative supply of biomass ash under dust-free conditions.

2. The closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 1, characterized in that, The ash conveying mechanism (11) includes a sealing shell (111), a first rotating shaft (112) is rotatably installed inside the sealing shell (111), a spiral blade (113) is provided on the first rotating shaft (112) along the axial direction, an ash inlet (114) is provided above one end of the sealing shell (111), and an ash outlet (115) is provided below the other end. A first motor (116) is also provided at one end of the sealing shell (111) near the ash inlet (114), and the first motor (116) is drivenly connected to the first rotating shaft (112); An emergency ash outlet (117) is also provided at one end of the sealing shell (111) near the ash outlet (115), and an openable and closable partition (118) is provided at the emergency ash outlet (117) and the ash outlet (115).

3. The closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 2, characterized in that, The sealing shell (111) of the ash conveying mechanism (11) is a fully enclosed tubular shell, and its inner wall maintains a predetermined gap with the spiral blade (113).

4. The closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 1, characterized in that, The dividing mechanism (12) includes a housing (127), a feed inlet (121) at the top of the housing (127), a cover (123) with an opening at the feed inlet (121), a discharge outlet (122) at the bottom of the housing (127), a second rotating shaft (124) inside the housing (127), an impeller blade (125) on the second rotating shaft (124), a flow guide (126) at the discharge outlet (122) of the housing (127), and the second rotating shaft (124) is driven by an external second motor (128).

5. The equipment for comprehensive utilization of biomass ash resources in a paper-faced gypsum board production line according to claim 4, characterized in that, When the compartment mechanism (12) is under maintenance or blocked, the partition (118) is moved to close the ash outlet (117) and open the emergency ash outlet (117) to realize the emergency discharge of biomass ash.

6. A closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 5, characterized in that, The impeller blades (125) in the dividing mechanism (12) are a multi-blade structure that is evenly distributed at equal angles along the circumference of the second rotating shaft (124) to divide the continuously entering biomass ash into equal volume compartments, thereby achieving quantitative, continuous and less pulsating feeding.

7. A closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 1, characterized in that, The chute (13) includes an inclined trough (131), the upper end of which is provided with an inlet (132), which is connected to the discharge port of the dividing mechanism (12); the lower end of the trough (131) is provided with an outlet (133), which is used to connect with a clinker cutter to introduce biomass ash into calcined gypsum powder.

8. A closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 7, characterized in that, The chute (13) has its body (131) tilted relative to the horizontal plane, and its tilt angle is sufficient to allow the biomass ash to slide smoothly to the outlet under its own weight. The inner bottom surface of the chute (131) is provided with a wear-resistant liner.

9. A closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 1, characterized in that, The ash conveying mechanism (11) and the dividing mechanism (12) are controlled by an electronic control system to start, stop and rotate. The electronic control system includes a host computer operation module and a field manual operation module.

10. A closed conveying device for biomass ash in a paper-faced gypsum board production line according to claim 9, characterized in that, The host computer operation module of the electrical control system is connected to the first motor (116) and the second motor (128) via a PLC controller, and automatically adjusts the speed of the ash conveying mechanism (11) and the dividing mechanism (12) according to the instantaneous load current of the clinker reamer.

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