Dust-proof type discharging device

Abstract

The application provides a dust-proof discharging device, belonging to the technical field of lime production, comprising a discharging bin for communicating with a discharging port of a lime shaft kiln, and the side of the discharging bin is provided with an opening for passing a carriage; the discharging device further comprises two groups of dust suction assemblies arranged in the discharging bin; each group of dust suction assemblies comprises a positioning beam, a gas suction assembly and a blocking belt. The positioning beam is arranged in the discharging bin, and a plurality of gas inlets are formed in the surface of the positioning beam; the positioning beam is drivingly connected with a lifting mechanism and a translation mechanism, so that the positioning beam can be moved to be in contact with the side top of the carriage; the gas suction assembly is in communication with the inside of the positioning beam and is used for sucking out the gas in the inside of the positioning beam; the blocking belt is arranged on the upper side of the positioning beam; and the two ends of the blocking belt are connected with the positioning beam and the discharging bin respectively. The dust-proof discharging device provided by the application significantly reduces the diffusion of dust in the discharging process through the double effects of negative pressure adsorption of the dust suction assembly and physical interception of the blocking belt, and reduces environmental pollution.

Description

Technical Field

[0001] This utility model belongs to the field of lime production technology, and more specifically, it relates to a dust-proof discharge device. Background Technology

[0002] As the core equipment in lime production, the discharge stage of the vertical lime kiln is a crucial final step in the calcination process. Typically, after calcination, the lime is cooled to a safe temperature by a cooling zone and then evenly pushed to the discharge port at the bottom of the kiln by a discharge device, thus completing the discharge process.

[0003] Currently, the common practice in vertical lime kilns is to have a truck bed directly receive the material below the discharge port. In practice, the truck must be precisely positioned directly below the discharge port. Once the discharge device is activated, the finished lime product falls from the discharge port into the truck bed to complete the loading process.

[0004] The inventors discovered that due to the height difference between the discharge port and the carriage, the falling lime is prone to collision and dispersion with the environment, forming a large amount of fly ash. The fly ash diffuses in the workshop and surrounding environment in the form of dust, which not only seriously pollutes the air, but also threatens the respiratory health of the operators. Furthermore, the fly ash that falls to the ground is difficult to clean after mixing with debris on the ground, requiring a lot of manpower and resources to clean it. Utility Model Content

[0005] The purpose of this application is to provide a dust-proof discharge device to solve the technical problem that the method of directly receiving materials below the discharge port by the truck body easily generates a large amount of fly ash, and the fly ash is not easy to recycle.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A dust-proof discharge device is provided, comprising a discharge hopper; the top of the discharge hopper is configured to communicate with the discharge port of a lime vertical kiln, and the side has an opening for a vehicle to pass through; characterized in that the discharge device further comprises:

[0008] Two sets of dust-collecting components are arranged side-by-side in the discharge hopper along a horizontal direction; the arrangement direction of the two sets of dust-collecting components is perpendicular to the axis of the opening; each set of dust-collecting components includes:

[0009] A positioning beam is installed inside the discharge hopper, with its length direction parallel to the axis of the opening; the positioning beam has an internal hollow structure and multiple air inlets are opened on its surface; the positioning beam is driven by a lifting mechanism and a translation mechanism so that the positioning beam can be moved to connect with the top of the side of the carriage.

[0010] An air extraction assembly, connected to the interior of the positioning beam, is used to extract gas from inside the positioning beam; and

[0011] A barrier strip is provided on the upper side of the positioning beam; one end of the barrier strip is connected to the positioning beam, and the other end is fixed to the top of the discharge hopper by a winding mechanism.

[0012] In one possible implementation, the lifting mechanism includes:

[0013] A lifting seat is slidably disposed within the discharge hopper in the vertical direction; the lifting seat has a threaded hole extending vertically; a positioning beam is slidably disposed on the lifting seat via the translation mechanism, so that the positioning beam can move synchronously with the lifting seat and also gives the positioning beam a degree of freedom of movement relative to the lifting seat; and

[0014] The screw is rotatably mounted inside the discharge hopper and is threadedly connected to the threaded hole.

[0015] The screw drive is connected to a drive motor to make the screw rotate around its own central axis.

[0016] In one possible implementation, the translation mechanism includes:

[0017] A linear cylinder is mounted on the lifting seat;

[0018] The power output axis of the linear cylinder is not parallel to the vertical direction, and the power output end of the linear cylinder is connected to the positioning beam.

[0019] In one possible implementation, the air extraction assembly includes:

[0020] A vacuum pump is installed outside the discharge hopper; and

[0021] The pipe is connected at both ends to the positioning beam and the vacuum pump, respectively, to extract the air from inside the positioning beam and create a negative pressure inside the positioning beam.

[0022] In one possible implementation, the winding mechanism includes:

[0023] A rotating shaft is rotatably connected to the discharge hopper, and the axial direction of the rotating shaft is parallel to the length direction of the positioning beam; the rotating shaft is connected to the end of the barrier strip; and

[0024] A rotating component, which is connected to the rotating shaft, is used to drive the rotating shaft to rotate in order to wind up the barrier tape.

[0025] In one possible implementation, the rotating component includes:

[0026] A winch, coaxially mounted at one end of the rotating shaft, with a traction rope wound around its outer circumference; and

[0027] A counterweight, connected to the end of the traction rope, is used to pull the traction rope downwards, so as to rotate the winch and disengage the traction rope from the winch.

[0028] In one possible implementation, the discharge hopper is further provided with a limiting cylinder, the axis of which is parallel to the vertical direction, and the counterweight is slidably inserted into the limiting cylinder along the vertical direction.

[0029] In one possible implementation, the positioning beam has a fixing groove for the end of the barrier strip to be inserted.

[0030] In one possible implementation, a plurality of anti-slip teeth are provided between the fixing groove and the barrier strip.

[0031] In one possible implementation, the positioning beam is provided with a sealing gasket, which is made of an elastic material;

[0032] When the positioning beam moves to contact the side top of the carriage, the sealing gasket fills the space between the positioning beam and the carriage and is adapted to undergo elastic deformation.

[0033] In this embodiment of the application, when material receiving is required, the material (such as lime) of the lime vertical kiln enters the discharge hopper through the discharge port, and at the same time, the carriage transporting the material drives in through the opening on the side of the discharge hopper and stops at the material receiving position below the discharge port in the discharge hopper (the opening on the top of the carriage is aligned with the discharge port), thus completing the positioning before material receiving.

[0034] The position of the positioning beam is adjusted by the lifting mechanism and the translation mechanism: First, the lifting mechanism moves the positioning beam up and down until the height of the positioning beam matches the height of the top of the side of the carriage; then, the translation mechanism moves the positioning beam horizontally (parallel to the axis of the opening) until the positioning beam fits tightly against the top of the side of the carriage.

[0035] When the positioning beam moves to fit the carriage, the barrier strip is stretched and unfolded. After unfolding, the barrier strip covers the upper area of ​​the positioning beam, forming a continuous physical barrier between the top of the carriage and the inner wall of the discharge hopper, preventing unabsorbed dust from overflowing upwards from the gap between the top of the carriage and the discharge hopper.

[0036] The vacuum pump starts and extracts air from inside the positioning beam, creating a negative pressure inside the beam. During the material receiving process, the fly ash generated when the lime material falls into the car body from the discharge port is drawn into the positioning beam through multiple air inlets on the surface of the beam under the action of pressure difference. Finally, it is transported to the outside of the discharge hopper for centralized treatment to prevent the fly ash from spreading.

[0037] Compared with the prior art, the dust-proof discharge device provided in this application significantly reduces dust diffusion during the discharge process and reduces environmental pollution through the dual effects of negative pressure adsorption of the dust-absorbing components and physical interception of the barrier belt; the positioning beam can be moved to fit the carriage and adapt to carriages of different heights or widths, improving the versatility of the device; the two sets of dust-absorbing components are arranged side by side to cover both sides of the carriage, improving dust removal efficiency. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A three-dimensional structural schematic diagram of the dust-proof discharge device provided in the embodiments of this application;

[0040] Figure 2 This is a side view of the dust-proof discharge device provided in the embodiments of this application;

[0041] Figure 3 This is a top view of the dust-proof discharge device provided in the embodiments of this application;

[0042] Figure 4 For along Figure 3 Schematic diagram of the cross-sectional structure of line AA in the middle;

[0043] Figure 5 for Figure 4 A magnified structural diagram of region I in the middle;

[0044] Figure 6 for Figure 4 Enlarged structural diagram of region II;

[0045] Figure 7 This is a three-dimensional structural diagram of the positioning beam used in the embodiments of this application;

[0046] The following are the labeling elements in the figure:

[0047] 1. Discharge hopper; 11. Through-hole; 2. Positioning beam; 21. Air inlet; 22. Fixing groove; 221. Anti-slip teeth; 23. Sealing gasket; 3. Air extraction assembly; 31. Vacuum pump; 32. Pipeline; 4. Barrier strip; 5. Lifting mechanism; 51. Lifting seat; 52. Screw; 53. Drive motor; 6. Linear cylinder; 7. Rewinding mechanism; 71. Shaft; 72. Rotating component; 721. Winch; 722. Counterweight; 723. Traction rope; 73. Limiting cylinder; 8. Discharge port; 9. Carriage. Detailed Implementation

[0048] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0049] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0050] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] Please refer to the following: Figures 1 to 7 The dust-proof discharge device provided in this application is described below. The dust-proof discharge device includes a discharge hopper 1, the top of which is connected to the discharge port 8 of the lime vertical kiln. Lime material falls into the discharge hopper 1 from the discharge port 8. The carriage 9 enters the discharge hopper 1 through the side opening 11 to receive the material. The discharge device also includes two sets of dust suction components.

[0053] Two sets of dust suction components are arranged side by side in the discharge hopper 1 in a horizontal direction; the arrangement direction of the two sets of dust suction components is perpendicular to the axis of the opening 11; each set of dust suction components includes a positioning beam 2, an air extraction component 3 and a barrier strip 4.

[0054] The positioning beam 2 is installed inside the discharge hopper 1, with its length parallel to the axis of the opening 11. The positioning beam 2 has a hollow internal structure, and its surface has multiple air inlets 21. The positioning beam 2 is driven by a lifting mechanism 5 and a translation mechanism, so that the positioning beam 2 can move to connect with the top side of the carriage 9. The air inlets 21 of the positioning beam 2 can be designed with an adjustable diameter (such as by adding an electric valve) to dynamically adjust the negative pressure intensity according to the material falling speed.

[0055] The air extraction component 3 is internally connected to the positioning beam 2 and is used to extract the gas inside the positioning beam 2.

[0056] The barrier strip 4 is positioned on the upper side of the positioning beam 2; one end of the barrier strip 4 is connected to the positioning beam 2, and the other end is fixed to the top of the discharge hopper 1 by the winding mechanism 7. An antistatic coating can be applied to the surface of the barrier strip 4 to prevent the barrier effect from decreasing due to dust adsorption caused by static electricity.

[0057] In this embodiment of the application, when it is necessary to receive material, the material (such as lime) of the lime vertical kiln enters the discharge hopper 1 through the discharge port 8. At the same time, the carriage 9 transporting the material enters through the opening 11 on the side of the discharge hopper 1 and stops at the receiving position below the discharge port 8 in the discharge hopper 1 (the top opening of the carriage 9 is aligned with the discharge port 8), thus completing the positioning before receiving material.

[0058] The position of the positioning beam 2 is adjusted by the lifting mechanism 5 and the translation mechanism: First, the lifting mechanism 5 moves the positioning beam 2 in the vertical direction until the height of the positioning beam 2 matches the height of the top side of the carriage 9; then, the translation mechanism moves the positioning beam 2 in the horizontal direction (parallel to the axis of the opening 11) until the positioning beam 2 is tightly fitted to the top side of the carriage 9.

[0059] When the positioning beam 2 moves to fit the carriage 9, the barrier strip 4 is stretched and unfolded. After unfolding, the barrier strip 4 covers the upper area of ​​the positioning beam 2, forming a continuous physical barrier between the top of the carriage 9 and the inner wall of the discharge hopper 1, preventing unabsorbed dust from overflowing upwards from the gap between the top of the carriage 9 and the discharge hopper 1.

[0060] The vacuum pump 31 is started to extract the air inside the positioning beam 2, creating a negative pressure inside the positioning beam 2. During the material receiving process, the fly ash generated when the lime material falls from the discharge port 8 into the carriage 9 is drawn into the positioning beam 2 through multiple air inlets 21 on the surface of the positioning beam 2 under the action of pressure difference, and is finally transported to the outside of the discharge hopper 1 for centralized treatment to avoid the spread of fly ash.

[0061] After the carriage 9 finishes receiving the material and leaves the discharge hopper 1, the lifting mechanism 5 reverses its movement, causing the lifting seat 51 and the positioning beam 2 to rise and reset; the translation mechanism reverses its movement, causing the positioning beam 2 to retract horizontally to the initial position; the winding mechanism 7 operates, rewinding the barrier tape 4 onto the rotating shaft 71 to prevent the barrier tape 4 from becoming loose and accumulating, thus preparing for the next material receiving.

[0062] Compared with the prior art, the dust-proof discharge device provided in this application significantly reduces dust diffusion during the discharge process and reduces environmental pollution through the dual effects of negative pressure adsorption of the dust-absorbing components and physical interception of the barrier belt 4; the positioning beam 2 can be moved to fit the carriage 9 to adapt to carriages 9 of different heights or widths, improving the versatility of the device; the two sets of dust-absorbing components are arranged side by side to cover both sides of the carriage 9, improving dust removal efficiency.

[0063] In some embodiments, the lifting mechanism 5 described above may employ, for example... Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The lifting mechanism 5 includes a lifting seat 51 and a screw 52.

[0064] The lifting seat 51 is slidably disposed in the discharge bin 1 in the vertical direction; the lifting seat 51 has a threaded hole that runs through in the vertical direction; the positioning beam 2 is slidably disposed on the lifting seat 51 through a translation mechanism so that the positioning beam 2 can move synchronously with the lifting seat 51, and also gives the positioning beam 2 a degree of freedom of movement relative to the lifting seat 51.

[0065] The screw 52 is rotatably mounted inside the discharge hopper 1 and is threadedly connected to the threaded hole.

[0066] The screw 52 is connected to a drive motor 53 so that the screw 52 rotates around its own central axis.

[0067] The drive motor 53 drives the screw 52 to rotate. When the screw 52 rotates, the lifting seat 51 is linearly displaced due to the screw drive, so that the lifting seat 51 slides in the up and down direction. The positioning beam 2 is connected to the lifting seat 51 through the translation mechanism. Therefore, the sliding of the lifting seat 51 can drive the positioning beam 2 to rise and fall synchronously, so as to achieve precise adjustment of the height of the positioning beam 2 to adapt to the side top of the carriage 9 of different heights.

[0068] The screw 52 can be replaced with a ball screw to reduce transmission friction and improve lifting efficiency; or a displacement sensor can be added to the lifting seat 51 to control the start and stop of the drive motor 53 through feedback, so as to realize automatic height adjustment (such as automatically adjusting the position of the positioning beam 2 after the sensor detects the height of the carriage 9).

[0069] Through the transmission of the screw 52 and the threaded hole, the lifting process is smooth and the positioning accuracy is high (the pitch of the screw 52 can control the lifting speed and displacement), avoiding the collision between the positioning beam 2 and the carriage 9 due to rapid lifting; the sliding guide structure (such as the guide rail) of the lifting seat 51 can prevent the positioning beam 2 from shifting and ensure its sealing with the carriage 9.

[0070] In some embodiments, the translation mechanism described above may employ, for example... Figure 4 The structure shown is described in the following document. Figure 4 The translation mechanism includes a linear cylinder 6.

[0071] Linear cylinder 6 is mounted on lifting seat 51; the power output axis of linear cylinder 6 is not parallel to the vertical direction, and the power output end of linear cylinder 6 is connected to positioning beam 2.

[0072] The linear cylinder 6 is fixed on the lifting seat 51, and its power output shaft extends and retracts in the horizontal direction (parallel to the axis of the opening 11), pushing or pulling the positioning beam 2 to translate relative to the lifting seat 51; combined with the height adjustment of the lifting mechanism 5, the positioning beam 2 can simultaneously move up and down and horizontally, and finally fit against the top of the side of the carriage 9 (if the width of the carriage 9 changes, the horizontal position deviation is compensated by translation).

[0073] The linear cylinder 6 can be replaced with an electric push rod, which can be driven by a motor to extend and retract, thereby achieving more precise horizontal displacement control (such as recording the displacement through an encoder); or an elastic buffer (such as a spring) can be added between the cylinder and the positioning beam 2 to avoid rigid collisions that could damage the carriage 9 or the positioning beam 2.

[0074] The linear cylinder 6 has a fast response speed and stable thrust, and can quickly adjust the horizontal position of the positioning beam 2 to adapt to different widths of the carriage 9. Compared with the translation method of motor + gear and rack, the cylinder structure is simpler, the maintenance cost is lower, and there is no gear wear problem.

[0075] In some embodiments, the above-described air extraction component 3 may employ, as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The air extraction assembly 3 includes a vacuum pump 31 and a pipe 32.

[0076] Vacuum pump 31 is installed outside the discharge hopper 1.

[0077] The two ends of the pipe 32 are connected to the positioning beam 2 and the vacuum pump 31 respectively, so as to extract the air inside the positioning beam 2 and create negative pressure inside the positioning beam 2.

[0078] After the vacuum pump 31 is started, it draws air from the inside of the positioning beam 2 through the pipeline 32, creating a negative pressure inside the positioning beam 2. Fly ash (dust generated when the material falls during receiving) is drawn into the inside through the air inlet 21 on the surface of the positioning beam 2 under the action of pressure difference, and is finally transported to the dust removal equipment (such as a bag filter) for centralized treatment through the pipeline 32.

[0079] A two-stage vacuum pump 31 can be used to increase the negative pressure intensity to adapt to high dust scenarios (such as when a large flow of materials falls); or a filter screen can be added inside the pipeline 32 to prevent large particles (such as lime blocks) from being sucked into the pump body and causing blockage.

[0080] The vacuum pump 31 has strong negative pressure stability and can continuously and efficiently adsorb dust; the pipe 32 has a flexible connection method, which makes it easy to separate the positioning beam 2 from the external air extraction equipment (placing the air pump outside the chamber can reduce the space occupied inside the chamber and reduce the wear of the pump body by dust).

[0081] In some embodiments, the winding mechanism 7 described above may adopt the structure shown in Figures *, * and *. Referring to Figures *, * and *, the winding mechanism 7 includes a rotating shaft 71 and a rotating member 72.

[0082] The rotating shaft 71 is rotatably connected to the discharge hopper 1, and the axial direction of the rotating shaft 71 is parallel to the length direction of the positioning beam 2; the rotating shaft 71 is connected to the end of the barrier belt 4.

[0083] The rotating component 72 is connected to the rotating shaft 71 for driving the rotating shaft 71 to rotate in order to wind up the barrier belt 4.

[0084] One end of the barrier band 4 is fixed to the positioning beam 2, and the other end is wrapped around the rotating shaft 71 (the axis of the rotating shaft 71 is parallel to the length direction of the positioning beam 2). When the positioning beam 2 descends, the barrier band 4 is stretched, and the rotating shaft 71 is rotated under the drive of the rotating component 72 to release the barrier band 4. When the positioning beam 2 rises and resets, the rotating component 72 drives the rotating shaft 71 to rotate in the opposite direction, rewinding the barrier band 4 onto the rotating shaft 71 to prevent the barrier band 4 from becoming loose and accumulating, affecting the next use.

[0085] A torsion spring can be added to the rotating shaft 71 to replace the rotating component 72, and the spring's rebound force can be used to automatically wind up the barrier belt 4, simplifying the structure; or a manual crank can be installed at the end of the rotating shaft 71 as a backup winding method when the electric drive fails.

[0086] The winding method of the rotating shaft 71 can maintain the tension of the barrier belt 4 and prevent it from slackening and sagging during the discharge process, thus preventing dust from overflowing. The axial parallel design ensures that the barrier belt 4 covers the entire length of the positioning beam 2 when it is unfolded, improving the uniformity of the barrier.

[0087] In some embodiments, the rotary member 72 may be adopted as follows: Figures 2 to 4 The structure shown is described in the following document. Figures 2 to 4 The rotating component 72 includes a winch 721 and a counterweight 722.

[0088] The winch 721 is coaxially mounted at one end of the rotating shaft 71, and the traction rope 723 is wound around the outer periphery of the winch 721.

[0089] The counterweight 722 is connected to the end of the traction rope 723 and is used to pull the traction rope 723 downward so that the winch 721 rotates and the traction rope 723 disengages from the winch 721.

[0090] The winch 721 is coaxially fixed to one end of the shaft 71. The traction rope 723 is wound around the outer circumference of the winch 721 and connected to the counterweight 722. When the positioning beam 2 descends, the barrier belt 4 is stretched, the shaft 71 is forced to rotate to release the barrier belt 4, the winch 721 rotates synchronously and releases the traction rope 723, and the counterweight 722 falls due to gravity, pulling the traction rope 723. When the positioning beam 2 rises, the barrier belt 4 loosens, and the gravity of the counterweight 722 pulls the winch 721 to rotate in the opposite direction through the traction rope 723, which drives the shaft 71 to wind up the barrier belt 4.

[0091] The counterweight 722 can be replaced with a spring, with one end of the spring fixed to the discharge bin 1 and the other end connected to the traction rope 723. The spring force can be used to drive the winding instead of gravity, which is suitable for scenarios with limited space. Alternatively, a one-way bearing can be added between the winch 721 and the shaft 71 to prevent the winch 721 from rotating in the opposite direction when the barrier belt 4 is released, which would cause the counterweight 722 to rise unexpectedly.

[0092] The gravity-driven winding of the counterweight 722 eliminates the need for an additional power source (such as a motor), reducing energy consumption and equipment complexity. The weight of the counterweight 722 is adjustable (by replacing counterweights of different masses) to accommodate barrier tapes 4 of different lengths or weights.

[0093] In some embodiments, the discharge hopper 1 can be adopted as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The discharge hopper 1 is also equipped with a limiting cylinder 73. The axis of the limiting cylinder 73 is parallel to the vertical direction, and the counterweight 722 is slidably inserted into the limiting cylinder 73 in the vertical direction.

[0094] The counterweight 722 is slidably inserted into the limiting cylinder 73 (the axis of the limiting cylinder 73 is parallel to the vertical direction). When the counterweight 722 falls or rises due to gravity, the limiting cylinder 73 restricts its horizontal deviation, ensuring that the traction rope 723 always moves in the vertical direction, and preventing the winch 721 from becoming tangled due to the traction rope 723 being skewed.

[0095] A lubricating coating (such as polytetrafluoroethylene) can be provided on the inner wall of the limiting cylinder 73 to reduce the frictional resistance when the counterweight 722 slides; or a buffer pad (such as rubber) can be added to the bottom of the limiting cylinder 73 to prevent the counterweight 722 from colliding and being damaged when it falls to the bottom.

[0096] The guiding function of the limiting cylinder 73 can improve the stability of the movement of the counterweight 722 and prevent it from colliding with the inner wall of the discharge hopper 1 to generate noise or wear; at the same time, the limiting cylinder 73 can protect the counterweight 722 from external material (such as lime dust) contamination and extend its service life.

[0097] In some embodiments, the positioning beam 2 can be adopted as follows: Figures 4 to 7 The structure shown is described in the following document. Figures 4 to 7The positioning beam 2 has a fixing groove 22 for the end of the barrier band 4 to be embedded.

[0098] The end of the barrier band 4 is embedded in the fixing groove 22 of the positioning beam 2 (the groove shape matches the cross section of the barrier band 4). The barrier band 4 is mechanically limited by the groove wall to prevent it from falling off the positioning beam 2 due to stretching or vibration during the discharge process, thus ensuring the reliability of the connection between the barrier band 4 and the positioning beam 2.

[0099] The fixing groove 22 can be designed as a T-shaped groove, and T-shaped protrusions can be set at the ends of the barrier strip 4 to enhance the horizontal resistance to detachment; or an adhesive (such as epoxy resin) can be filled into the fixing groove 22, combining mechanical embedding and chemical bonding to further improve the connection strength.

[0100] The structure of the fixing groove 22 is simple, and the barrier strip 4 can be fixed without additional fasteners (such as bolts), which reduces the difficulty of installation and maintenance. The limiting effect of the groove wall can disperse the tensile force on the barrier strip 4 and avoid local stress concentration leading to breakage.

[0101] In some embodiments, the fixing groove 22 may be as follows: Figure 4 , Figure 5 and Figure 7 The structure shown is described in the following document. Figure 4 , Figure 5 and Figure 7 Multiple anti-slip teeth 221 are provided between the fixing groove 22 and the barrier strip 4.

[0102] Anti-slip teeth 221 (such as serrated protrusions) are provided on the inner wall of the fixing groove 22 or at the end of the barrier strip 4. When the barrier strip 4 is embedded in the fixing groove 22, the anti-slip teeth 221 mesh with each other, increasing the friction of the contact surface and preventing the barrier strip 4 from sliding out of the fixing groove 22 due to vibration or stretching.

[0103] The anti-slip teeth 221 can be designed as an elastic material (such as rubber) to generate elastic deformation during meshing, thereby further increasing the friction; or staggered anti-slip teeth 221 (the teeth of the fixing groove 22 and the barrier band 4 are in opposite directions) can be used to improve the shear resistance.

[0104] The design of the anti-slip teeth 221 can significantly improve the connection reliability between the barrier strip 4 and the fixing groove 22, especially in high-frequency vibration scenarios (such as vibration when the carriage 9 receives materials), to prevent the barrier strip 4 from loosening and causing fly ash to spill out; the processing technology of the anti-slip teeth 221 is simple and can be formed by stamping or injection molding.

[0105] In some embodiments, the positioning beam 2 can be adopted as follows: Figure 4 and Figure 7 The structure shown is described in the following document. Figure 4 and Figure 7 The positioning beam 2 is equipped with a sealing gasket 23, which is made of elastic material.

[0106] When the positioning beam 2 moves to contact the side top of the carriage 9, the sealing gasket 23 fills the space between the positioning beam 2 and the carriage 9 and is adapted to undergo elastic deformation.

[0107] When the positioning beam 2 is attached to the top side of the carriage 9, the elastic sealing gasket 23 is compressed and produces elastic deformation, filling the gap between the positioning beam 2 and the carriage 9. If the surface of the carriage 9 is uneven or the positioning beam 2 is slightly offset, a sealing layer is formed to prevent dust from leaking from the attachment point.

[0108] A lip structure can be added to the surface of the sealing gasket 23, similar to the sealing strip of automotive doors and windows, to further enhance the sealing effect through secondary deformation of the lip; or a multi-layer sealing gasket 23 can be used (such as an inner layer of elastic rubber and an outer layer of wear-resistant nylon) to balance sealing and durability.

[0109] The elastic deformation of the sealing gasket 23 can adapt to the unevenness of the surface of the carriage 9 (such as rust and scratches), improving the fit and sealing performance; the elastic material (such as rubber) has good wear resistance and aging resistance, which can extend the replacement cycle of the sealing gasket 23.

[0110] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dust-proof discharge device, comprising a discharge hopper; the top of the discharge hopper is configured to communicate with the discharge port of a vertical lime kiln, and the side has an opening for a vehicle to pass through; characterized in that, The discharge device further includes: Two sets of dust-collecting components are arranged side-by-side in the discharge hopper along a horizontal direction; the arrangement direction of the two sets of dust-collecting components is perpendicular to the axis of the opening; each set of dust-collecting components includes: A positioning beam is installed inside the discharge hopper, with its length direction parallel to the axis of the opening; the positioning beam has an internal hollow structure and multiple air inlets are opened on its surface; the positioning beam is driven by a lifting mechanism and a translation mechanism so that the positioning beam can be moved to connect with the top of the side of the carriage. An air extraction assembly, connected to the interior of the positioning beam, is used to extract gas from inside the positioning beam; and A barrier strip is provided on the upper side of the positioning beam; one end of the barrier strip is connected to the positioning beam, and the other end is fixed to the top of the discharge hopper by a winding mechanism.

2. The dust-proof discharge device as described in claim 1, characterized in that, The lifting mechanism includes: A lifting seat is slidably disposed within the discharge hopper in the vertical direction; the lifting seat has a threaded hole extending vertically; a positioning beam is slidably disposed on the lifting seat via the translation mechanism, so that the positioning beam can move synchronously with the lifting seat and also gives the positioning beam a degree of freedom of movement relative to the lifting seat; and The screw is rotatably mounted inside the discharge hopper and is threadedly connected to the threaded hole. The screw drive is connected to a drive motor to make the screw rotate around its own central axis.

3. The dust-proof discharge device as described in claim 2, characterized in that, The translation mechanism includes: A linear cylinder is mounted on the lifting seat; The power output axis of the linear cylinder is not parallel to the vertical direction, and the power output end of the linear cylinder is connected to the positioning beam.

4. The dust-proof discharge device as described in claim 1, characterized in that, The air extraction assembly includes: A vacuum pump is installed outside the discharge hopper; and The pipe is connected at both ends to the positioning beam and the vacuum pump, respectively, to extract the air from inside the positioning beam and create a negative pressure inside the positioning beam.

5. The dust-proof discharge device as described in claim 1, characterized in that, The winding mechanism includes: A rotating shaft is rotatably connected to the discharge hopper, and the axial direction of the rotating shaft is parallel to the length direction of the positioning beam; the rotating shaft is connected to the end of the barrier strip; and A rotating component, which is connected to the rotating shaft, is used to drive the rotating shaft to rotate in order to wind up the barrier tape.

6. The dust-proof discharge device as described in claim 5, characterized in that, The rotating component includes: A winch, coaxially mounted at one end of the rotating shaft, with a traction rope wound around its outer circumference; and A counterweight, connected to the end of the traction rope, is used to pull the traction rope downwards, so as to rotate the winch and disengage the traction rope from the winch.

7. The dust-proof discharge device as described in claim 6, characterized in that, The discharge hopper is also equipped with a limiting cylinder, the axis of which is parallel to the vertical direction, and the counterweight is slidably inserted into the limiting cylinder along the vertical direction.

8. The dust-proof discharge device as described in claim 1, characterized in that, The positioning beam has a fixing groove for the end of the barrier strip to be inserted.

9. The dust-proof discharge device as described in claim 8, characterized in that, Multiple anti-slip teeth are provided between the fixing groove and the barrier strip.

10. The dust-proof discharge device as described in claim 1, characterized in that, The positioning beam is provided with a sealing gasket, which is made of an elastic material; When the positioning beam moves to contact the side top of the carriage, the sealing gasket fills the space between the positioning beam and the carriage and is adapted to undergo elastic deformation.

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