Device and method for preparing solid-state composite hydrogen storage material

Abstract

The invention provides a solid-state composite hydrogen storage material preparation device and method, and belongs to the technical field of hydrogen storage material preparation. Comprising a ball-milling barrel and further comprises two feeding pipes, the two feeding pipes are fixed to the two ends of the ball-milling barrel respectively, a baffle is fixed to the inner wall of the ball-milling barrel and fixedly connected to the outer walls of the feeding pipes in a sleeving mode, a discharging opening is formed in the middle of the outer wall of the ball-milling barrel, a cover plate is detachably connected to the discharging opening, and the cover plate is connected to the outer wall of the ball-milling barrel. The inner diameter of the middle of the ball-milling barrel is larger than that of the two ends of the ball-milling barrel; a plurality of convex strips III are fixed on the inner wall of the ball-milling barrel. Through the arrangement of the strip-shaped shifting plate, in the process that the strip-shaped shifting plate rotates along with the ball milling barrel, the strip-shaped shifting plate is utilized to bring steel balls to a high position, then the steel balls fall down from the high position, the impact force of the steel balls on blocky raw materials is increased, crushing of the blocky raw materials is accelerated, the ball milling time is shortened, and therefore the ball milling efficiency of the blocky raw materials is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage material preparation, and particularly relates to a device and method for preparing a solid composite hydrogen storage material. Background Art

[0002] Solid composite hydrogen storage materials are a type of materials that store hydrogen in a solid medium in a physical or chemical manner. They are usually composed of one or more metal hydrides compounded with other additives or carriers, and have advantages such as high hydrogen storage density, good safety, and reversible hydrogen absorption and desorption performance. Solid composite hydrogen storage materials are often prepared by a ball mill. Block-shaped raw materials are added into the ball mill cylinder. During the rotation of the ball mill cylinder, the inner liner inside drives the steel balls and the block-shaped raw materials to tumble inside the ball mill cylinder. At the same time, during the rotation of the ball mill cylinder, the steel balls are lifted by the protrusions on the inner liner, and then the steel balls fall under their own gravity and impact the block-shaped raw materials. Relying on the repeated impact, collision, and friction of the steel balls on the block-shaped raw materials, the block-shaped raw materials are ball-milled into powder. Then, additives are added into the ball mill cylinder. After the powdered raw materials and the additives are mixed, a solid composite hydrogen storage material is formed by a pressing and forming method.

[0003] When using a ball mill to prepare a solid composite hydrogen storage material, block-shaped raw materials are added into the ball mill cylinder. The ball mill cylinder relies on the protrusions on the inner liner to drive the steel balls and the block-shaped raw materials to tumble inside the ball mill cylinder. At the same time, the protrusions on the inner liner lift the steel balls, and then the steel balls fall under their own gravity and impact the block-shaped raw materials to achieve ball milling. However, the height of the protrusions on the inner liner at the inner wall of the ball mill cylinder is less than the diameter of the steel balls. It is difficult to lift the steel balls to a high place and then let them fall through the protrusions on the inner liner. The impact force of the steel balls when they fall on the block-shaped raw materials is weak, thus affecting the ball milling efficiency of the block-shaped raw materials. Therefore, the present application provides a device and method for preparing a solid composite hydrogen storage material to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device and method for preparing a solid composite hydrogen storage material to solve the problem that the impact force of the steel balls when they fall in the ball mill cylinder on the block-shaped raw materials is weak, thereby affecting the ball milling efficiency of the block-shaped raw materials.

[0005] To solve the above technical problem, the present invention provides the following technical solutions: A device for preparing a solid composite hydrogen storage material, including a ball mill cylinder, and further including: Feeding pipes, the number of the feeding pipes is two. The two feeding pipes are respectively fixed at both ends of the ball mill cylinder. A baffle is fixed on the inner wall of the ball mill cylinder. The baffle is fixedly sleeved on the outer wall of the feeding pipe. A discharge port is opened at the middle position of the outer wall of the ball mill cylinder. A cover plate is detachably connected at the discharge port. The inner diameter of the middle of the ball mill cylinder is larger than the inner diameter of both ends of the ball mill cylinder. A plurality of third convex strips are fixed on the inner wall of the ball mill cylinder; A toggling mechanism, the toggling mechanism includes a toggling component disposed inside the ball mill cylinder, the toggling component includes a plurality of strip-shaped paddles, the height of the strip-shaped paddles is greater than the diameter of the steel balls, the strip-shaped paddles are located between two baffles, and the plurality of strip-shaped paddles are arranged along the circumferential circle of the inner wall of the ball mill cylinder. A plurality of notches are provided on the side surface of the strip-shaped paddle, and the width of the notch is less than the diameter of the steel ball; During operation, the ball mill cylinder drives the strip-shaped paddles to rotate synchronously, and the strip-shaped paddles drive the steel balls to fall from a high place during the rotation process.

[0006] Preferably, a convex portion is provided on the side of the strip-shaped paddle facing the positive direction of the rotation direction of the ball mill cylinder, and a V-shaped surface is provided on the side of the convex portion away from the rotation center of the ball mill cylinder.

[0007] Preferably, a plurality of inclined guiding surfaces are provided on the side of the strip-shaped paddle facing the positive direction of the rotation direction of the ball mill cylinder. The convex portion is connected to the inclined guiding surfaces, and the notch is located between two adjacent inclined guiding surfaces.

[0008] Preferably, a first convex strip is fixed at the inclined guiding surface, and second convex strips are symmetrically fixed on the surface of the first convex strip, and the second convex strips are on the inclined guiding surface.

[0009] Preferably, both the first convex strip and the second convex strips are semicircular, and both ends of the second convex strip are bent towards the rotation center of the ball mill cylinder.

[0010] Preferably, an arc-shaped convex strip is fixed on the side of the strip-shaped paddle away from the rotation center of the ball mill cylinder. Both ends of the arc-shaped convex strip are bent towards the side close to the rotation center of the ball mill cylinder. An arc-shaped surface is provided on the side of the arc-shaped convex strip away from the rotation center of the ball mill cylinder, and the arc-shaped surface faces the opposite direction of the rotation direction of the ball mill cylinder. The shape of the arc-shaped convex strip is adapted to the shape of the inner wall of the ball mill cylinder.

[0011] Preferably, a strip-shaped arc surface is provided on the side of the strip-shaped paddle away from the rotation center of the ball mill cylinder. Both ends of the strip-shaped arc surface are bent towards the side close to the rotation center of the ball mill cylinder. The shape of the strip-shaped arc surface is adapted to the shape of the inner wall of the ball mill cylinder.

[0012] Preferably, the toggling mechanism further includes a driving component disposed on the outer wall of the ball mill cylinder. The driving component includes a plurality of driving members installed on the outer wall of the ball mill cylinder. The driving members are electric push rods. A driving seat is fixed at the telescopic end of the driving member. A driving column is fixed on the inner wall of the driving seat. A driven block is disposed inside the driving seat. An inclined slot is provided on the side surface of the driven block. The driving column is slidably connected in the inclined slot. A guiding rod is fixed on the side of the driven block close to the ball mill cylinder. One end of the guiding rod away from the driven block movably penetrates through the ball mill cylinder and extends to the inside of the ball mill cylinder. A guiding sleeve is fixed on the inner wall of the ball mill cylinder. The inner wall of the guiding sleeve is slidably connected to the surface of the guiding rod. A rotating component is provided at one end of the guiding rod away from the driven block, and the rotating component is used for the rotation after the separation of the strip-shaped paddle and the steel ball.

[0013] Preferably, the rotating assembly includes an L-shaped rod fixed to the side of the strip shift plate close to the rotation center of the ball mill, a square seat is fixed to the side of the guide rod away from the driven block, a through hole is opened on the side of the baffle, the L-shaped rod is located in the through groove, and the horizontal section of the L-shaped rod is inserted into the square seat, the horizontal section of the L-shaped rod is sleeved with a torsion spring, one end of the torsion spring is inserted into the end of the horizontal section of the L-shaped rod, and the other end of the torsion spring is inserted into the inner wall of the square seat, and a limiting block is fixed on the side of the baffle close to the strip shift plate. When the strip shift plate contacts the steel ball, the L-shaped rod fits with the limiting block, and when the strip shift plate separates from the steel ball, the L-shaped rod separates from the limiting block.

[0014] A method for preparing a solid composite hydrogen storage material, applied to the above-mentioned solid composite hydrogen storage material preparation device, comprises the following steps: S1: Add bulk raw materials and steel balls into the ball mill; S2: When the ball mill is milling the block raw materials, the strip-shaped paddle of the ball mill drives the steel balls to a high place and then drops them down; S3: After the ball milling is completed, the cover of the discharge port is opened, and the powdered raw materials are discharged from the discharge port.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting the strip-shaped paddle, the strip-shaped paddle follows the rotation of the ball mill, and the steel balls are lifted to a high place by the strip-shaped paddle, and then dropped from a high place, thereby increasing the impact force of the steel balls on the bulk raw materials, accelerating the crushing of the bulk raw materials, shortening the ball milling time, and thus improving the ball milling efficiency of the bulk raw materials.

[0016] By setting the raised part, when the steel ball is lifted up by the strip-shaped paddle during rotation, the raised part is used to block the steel ball from sliding off the strip-shaped paddle, thereby preventing the steel ball from directly sliding off the strip-shaped paddle, and further increasing the height at which the steel ball is lifted up by the strip-shaped paddle, thereby further increasing the impact force of the steel ball on the bulk raw material, thereby further accelerating the crushing of the bulk raw material, and thus further improving the ball milling efficiency of the bulk raw material.

[0017] By setting the convex strips one and two, the steel ball is guided by the convex strips one and two when rolling along the strip-shaped paddle plate, so that the steel ball can move on the strip-shaped paddle plate, thereby causing the steel balls on the strip-shaped paddle plate to collide with each other, thereby achieving ball milling of bulk raw materials on the strip-shaped paddle plate, shortening the overall ball milling time, and further improving the ball milling efficiency of bulk raw materials. At the same time, the convex strip two is curved, so that the raw materials passing through the convex strip two are guided by the shape of the convex strip two and slide smoothly from the inclined guide surface, thereby reducing the interference of the raw materials on the steel balls when moving on the strip-shaped paddle plate.

[0018] By setting the notch, after the large raw materials are ball-milled into small pieces, when the small raw materials are lifted up by the strip-shaped paddle, the small raw materials and the powdered raw materials produced by subsequent ball milling can fall from the notch, preventing the small raw materials or powdered raw materials from filling the raised part, thereby ensuring that the raised part stably produces a blocking effect on the steel ball.

[0019] By setting the inclined guide surface, after the strip-shaped paddle brings up the small pieces or powdered raw materials, the small pieces or powdered raw materials are guided by the inclined guide surface and are more likely to slide off the strip-shaped paddle and the notch, thereby further preventing the small pieces or powdered raw materials from filling the position of the raised portion, and further ensuring that the raised portion stably produces a blocking effect on the steel ball.

[0020] By setting the arcuate convex strips and the arcuate surface, there is a gap between the strip-shaped paddle and the inner wall of the ball mill. In order to reduce the probability of material getting stuck in the gap, the arcuate convex strips are set. The height of the gap is reduced by the arcuate convex strips, thereby reducing the possibility of large pieces of raw materials getting stuck in the gap. At the same time, when small pieces of raw materials pass between the arcuate convex strips and the inner wall of the ball mill, the side of the arcuate convex strips facing the inner wall of the ball mill is an arcuate surface rather than a flat surface. Through the design of the arcuate surface, the contact time between the arcuate convex strips and the small pieces of raw materials is reduced, thereby reducing the probability of small pieces of raw materials getting stuck at the arcuate convex strips.

[0021] Through the setting of the driving component, during the ball milling of block raw materials, the driving component is used to drive the strip-shaped paddle to gradually move away from the rotation center of the ball mill. During the ball milling of large block raw materials, the strip-shaped paddle is close to the rotation center of the ball mill. At this time, the strip-shaped paddle can drive more large block raw materials and steel balls to roll in the ball mill, thereby effectively pushing and stirring the large block raw materials, causing the large block raw materials and the large block raw materials and the steel balls to collide and rub against each other, thereby increasing the ball milling speed of the large block raw materials. When the large block raw materials become small pieces, the strip-shaped paddle moves away from the ball mill. The mill barrel moves in the direction of the center of rotation, so that the strip-shaped paddle is closer to the inner wall of the ball mill barrel. At this time, the strip-shaped paddle can better act on the small pieces of raw materials, preventing the small pieces of raw materials from passing through between the strip-shaped paddle and the inner wall of the ball mill barrel, improving the stirring effect of the strip-shaped paddle on the small pieces of raw materials, thereby increasing the ball milling speed of the small pieces of raw materials. When the small pieces of raw materials become powder, the arc-shaped convex strip fits with the inner wall of the ball mill barrel, preventing the powdered raw materials from passing through between the strip-shaped paddle and the inner wall of the ball mill barrel, improving the stirring effect of the strip-shaped paddle on the powdered raw materials, thereby increasing the ball milling speed of the powdered raw materials; Moreover, during the movement of the strip paddle, the number of steel balls that can be brought up gradually decreases. For large pieces of raw materials, more steel balls can be brought up, which can cause more large pieces of raw materials to be impacted and broken by the steel balls, thereby helping to break the large pieces of raw materials. For small pieces and powdery raw materials, the impact and crushing effect of the steel balls on the small pieces and powdery raw materials gradually decreases, and the number of steel balls brought up by the strip paddle gradually decreases, so that more steel balls can collide and rub against each other with the small pieces and powdery raw materials in the raw material mass, further shortening the time required for ball milling and greatly improving the ball milling efficiency.

[0022] Through the setting of the rotating component, during the rotation of the strip paddle, when block raw materials are stuck between the strip paddle and the inner wall of the ball mill, after the strip paddle is separated from the steel ball, the elastic force of the torsion spring in the rotating component is used to make the strip paddle rotate clockwise with the horizontal section of the L-shaped rod as the axis, so as to change the distance between the strip paddle and the inner wall of the ball mill, thereby releasing the stuck state of the block raw materials and making the stuck block raw materials fall into the raw material mass to participate in ball milling, thereby improving the ball milling uniformity of the block raw materials.

[0023] By setting the strip-shaped arc surface, when the strip-shaped paddle rotates clockwise under the action of the torsion spring elastic force, the side of the strip-shaped paddle facing the inner wall of the ball mill is a strip-shaped arc surface instead of a flat surface. By designing the strip-shaped arc surface, the distance between the strip-shaped paddle and the inner wall of the ball mill increases rapidly, making it easier for stuck block raw materials to break away from the strip-shaped paddle. At the same time, guided by the strip-shaped arc surface, the stuck block raw materials are easier to break away from the strip-shaped paddle, thereby effectively preventing the stuck block raw materials from affecting the rotation of the strip-shaped paddle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the rotating assembly of the present invention; Figure 3 It is a schematic diagram of three-dimensional structures of the convex strips of the present invention; Figure 4 It is a right sectional view of the cover plate of the present invention; Figure 5 It is a schematic diagram of the internal structure of the ball mill of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the strip-shaped paddle of the present invention; Figure 7 It is a cross-sectional view of the chute of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the torsion spring of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the arc-shaped convex strip of the present invention; Figure 10 It is a schematic diagram of the three-dimensional structure of a convex strip of the present invention.

[0025] In the figure: 1. ball mill; 2. feed pipe; 3. baffle; 4. toggle mechanism; 5. drive assembly; 6. drive member; 7. drive seat; 8. drive column; 9. driven block; 10. inclined groove; 11. guide rod; 12. guide sleeve; 13. rotating assembly; 14. square seat; 15. torsion spring; 16. L-shaped rod; 17. toggle assembly; 18. strip-shaped toggle plate; 19. oblique guide surface; 20. notch; 21. raised portion; 22. V-shaped surface; 23. convex strip one; 24. convex strip two; 25. convex strip three; 26. arc-shaped convex strip; 27. arc-shaped surface; 28. strip-shaped arc surface; 29. ​​through groove; 30. limit block; 31. cover plate.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0027] The following is a detailed description of a solid composite hydrogen storage material preparation device and method provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0028] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] like Figures 1-10As shown, an embodiment of the present invention provides a solid composite hydrogen storage material preparation device, including a ball mill 1, and also including: Feed pipe 2, the number of feed pipes 2 is two, the two feed pipes 2 are respectively fixed at both ends of the ball mill 1, a rotating seat is installed at the feed pipe 2, a bracket is installed at the bottom of the rotating seat, the bracket is used to set up the ball mill 1, and a motor and a reducer are also installed on the bracket. The motor drives the reducer to rotate, and the output shaft of the reducer drives the gear to rotate. The ball mill 1 is driven to rotate through the meshing of the gear and the gear ring on the outer wall of the ball mill 1, so as to realize the ball milling of the block raw materials inside the ball mill 1. The inner wall of the ball mill 1 is fixed with a baffle 3, and the baffle 3 is fixedly sleeved on the outer wall of the feed pipe 2. The baffle 3 prevents To prevent the raw material from falling out of the end of the ball mill 1 during the ball milling process, a discharge port is provided in the middle of the outer wall of the ball mill 1, and a cover plate 31 is detachably connected to the discharge port. The cover plate 31 is fixed to the discharge port by bolts, thereby realizing a detachable connection between the cover plate 31 and the discharge port. The inner diameter of the middle of the ball mill 1 is larger than the inner diameters of the two ends of the ball mill 1. A plurality of convex strips 25 are fixed to the inner wall of the ball mill 1. The convex strips 25 rotate with the ball mill 1 and are used to increase the friction between the raw material and the steel balls and the inner wall of the ball mill 1, so that the raw material and the steel balls are tumbled and stirred in the ball mill 1 to realize ball milling. The toggle mechanism 4 includes a toggle assembly 17 disposed inside the ball mill 1. The toggle assembly 17 includes a plurality of strip-shaped toggle plates 18. The height of the strip-shaped toggle plates 18 is greater than the diameter of the steel ball. The strip-shaped toggle plates 18 are located between the two baffles 3. The plurality of strip-shaped toggle plates 18 are arranged along the inner wall circumference of the ball mill 1. The side of the strip-shaped toggle plates 18 is provided with a plurality of notches 20. The width of the notches 20 is less than the diameter of the steel ball. During operation, the ball mill 1 drives the strip plate 18 to rotate synchronously. During the rotation of the strip plate 18, the steel balls are driven to fall from a high place, thereby increasing the impact force of the steel balls on the bulk raw materials, thereby shortening the ball milling time of the bulk raw materials and improving the ball milling efficiency of the bulk raw materials.

[0031] like Figures 6-10As shown, in the present embodiment, a protrusion 21 is provided on the side of the strip-shaped paddle 18 facing the positive direction of rotation of the ball mill 1, and the protrusion 21 is integrally formed with the strip-shaped paddle 18, and a V-shaped surface 22 is provided on the side of the protrusion 21 away from the rotation center of the ball mill 1. When the strip-shaped paddle 18 rotates to lift the steel ball, the protrusion 21 on the strip-shaped paddle 18 can block the steel ball from sliding off the strip-shaped paddle 18, prevent the steel ball from sliding directly off the strip-shaped paddle 18, and further increase the height of the steel ball lifted by the strip-shaped paddle 18, further increase the impact force of the steel ball on the bulk raw material, thereby accelerating the crushing of the bulk raw material again and improving the ball milling efficiency of the bulk raw material. The V-shaped surface 22 on the side of the protrusion 21 away from the rotation center of the ball mill 1 is conducive to guiding the raw material to slide from the two sides of the protrusion 21, and prevent small pieces of raw material or powdered raw material from filling the position of the protrusion 21 and affecting the blocking effect of the protrusion 21 on the steel ball.

[0032] like Figures 6-8 and Figure 10 As shown, in this embodiment, a plurality of inclined guide surfaces 19 are provided on the side of the strip-shaped paddle 18 facing the positive direction of rotation of the ball mill 1, the protrusion 21 is connected to the inclined guide surface 19, and the notch 20 is located between two adjacent inclined guide surfaces 19. The arrangement of the inclined guide surface 19 enables the strip-shaped paddle 18 to bring up small pieces or powdered raw materials, and the small pieces or powdered raw materials are guided by the inclined guide surface 19, and are more likely to slide off the strip-shaped paddle 18 and the notch 20, thereby further preventing the small pieces of raw materials or powdered raw materials from filling the position of the protrusion 21, and further ensuring that the protrusion 21 stably produces a blocking effect on the steel ball. At the same time, the inclined guide surface 19 is connected to the protrusion 21, which can make the steel ball transition to the protrusion 21 more smoothly during the rolling process, so that the protrusion 21 can play a blocking effect on the steel ball.

[0033] like Figure 10 As shown, in the present embodiment, a convex strip 1 23 is fixed at the inclined guide surface 19, and a convex strip 24 is symmetrically fixed on the surface of the convex strip 1 23. The convex strip 24 is on the inclined guide surface 19. When the steel ball contacts the convex strip 1 23, the steel ball will move along the strip-shaped paddle 18 under the guidance of the convex strip 1 23, so that the steel balls on the strip-shaped paddle 18 collide with each other, thereby realizing the ball milling of the block raw materials on the strip-shaped paddle 18, shortening the overall ball milling time, and improving the ball milling efficiency of the block raw materials. The convex strip 24 symmetrically fixed on the surface of the convex strip 1 23 can further guide the steel ball, so that the steel ball moves again, and the block raw materials on the strip-shaped paddle 18 are ball milled again. At the same time, the convex strip 24 can also guide the passing raw materials, so that the raw materials can slide smoothly from the inclined guide surface 19, reduce the interference of the raw materials on the steel balls when they move on the strip-shaped paddle 18, and ensure the efficient ball milling process.

[0034] like Figure 10As shown, in this embodiment, both the first rib 23 and the second rib 24 are semicircular, and both ends of the second rib 24 are bent towards the rotation center of the ball mill cylinder 1. The first rib 23 and the second rib 24 being semicircular can reduce the resistance when the massive and powdery raw materials pass through the first rib 23 and the second rib 24, enabling the massive and powdery raw materials to smoothly pass through the first rib 23 and the second rib 24, and preventing the massive and powdery raw materials from accumulating on the inclined guide surface 19 and affecting the blocking effect of the convex portion 21 on the steel balls. Both ends of the second rib 24 are bent towards the rotation center of the ball mill cylinder 1. This shape design is beneficial for guiding the steel balls to move irregularly, improving the ball milling effect on the massive raw materials on the strip-shaped baffle 18, and at the same time can further guide the flow of the massive and powdery raw materials at the inclined guide surface 19, enabling the massive and powdery raw materials to more smoothly pass through the second rib 24, and again preventing the massive and powdery raw materials from accumulating on the inclined guide surface 19 and affecting the blocking effect of the convex portion 21 on the steel balls.

[0035] As Figure 9 shown, in this embodiment, an arc-shaped rib 26 is fixed on the side of the strip-shaped baffle 18 away from the rotation center of the ball mill cylinder 1. Both ends of the arc-shaped rib 26 are bent towards the side close to the rotation center of the ball mill cylinder 1. An arc-shaped surface 27 is provided on the side of the arc-shaped rib 26 away from the rotation center of the ball mill cylinder 1, and the arc-shaped surface 27 faces the opposite direction of the rotation direction of the ball mill cylinder 1. The shape of the arc-shaped rib 26 is adapted to the shape of the inner wall of the ball mill cylinder 1. Since there is a gap between the strip-shaped baffle 18 and the inner wall of the ball mill cylinder 1, the arc-shaped rib 26 can reduce the height of this gap, reducing the possibility of large raw materials getting stuck in this gap. When small raw materials pass between the arc-shaped rib 26 and the inner wall of the ball mill cylinder 1, the arc-shaped surface 27 reduces the contact time between the arc-shaped rib 26 and the small raw materials, reducing the probability of the small raw materials getting stuck at the arc-shaped rib 26, ensuring the smooth progress of the ball milling process. The shape of the arc-shaped rib 26 is adapted to the shape of the inner wall of the ball mill cylinder 1, enabling it to fit more stably with the inner wall of the ball mill cylinder 1 during subsequent fitting, preventing material leakage. At the same time, the shape of the arc-shaped rib 26 is adapted to the shape of the inner wall of the ball mill cylinder 1, which can prevent the inclined part of the inner wall of the ball mill cylinder 1 from blocking the movement of the arc-shaped rib 26.

[0036] As Figures 1-3 、 Figure 6 and Figure 7As shown, in this embodiment, the toggle mechanism 4 also includes a driving assembly 5 arranged on the outer wall of the ball mill 1, and the driving assembly 5 includes a plurality of driving members 6 installed on the outer wall of the ball mill 1. The driving member 6 is an electric push rod. A mounting plate is fixed to the outer wall of the ball mill 1, and the driving member 6 is installed on the mounting plate to achieve fixation. The gear ring on the outer wall of the ball mill 1 has a notch corresponding to the push rod of the driving member 6, and the notch provides space for the extension or shortening of the push rod of the driving member 6. A driving seat 7 is fixed to the telescopic end of the driving member 6, and a driving column 8 is fixed to the inner wall of the driving seat 7. A driven block 9 is arranged inside the driving seat 7, and an inclined groove 10 is opened on the side of the driven block 9. The driving column 8 is slidably connected in the inclined groove 10. A guide rod 11 is fixed to the side of the driven block 9 close to the ball mill 1, and the guide rod 11 is far away One end of the driven block 9 moves through the ball mill 1 and extends to the inside of the ball mill 1. A guide sleeve 12 is fixed to the inner wall of the ball mill 1. The inner wall of the guide sleeve 12 is slidably connected to the surface of the guide rod 11. A rotating assembly 13 is arranged at the end of the guide rod 11 away from the driven block 9. The rotating assembly 13 is used for the rotation of the strip-shaped paddle 18 after it is separated from the steel ball. A conductive slip ring is installed on the outer wall of the ball mill 1. The conductive slip ring is connected to an external power supply. The conductive slip ring is used to realize the power supply to the driving member 6. In the process of ball milling the block raw material, the push rod of the driving member 6 on the driving assembly 5 is shortened to drive the driving seat 7 to move. The driving seat 7 drives the driving column 8 to squeeze the inner wall of the inclined groove 10 on the driven block 9 away from the inclined surface 19 on the side of the ball mill 1, so that the driven block 9 drives the guide rod 11 along the guide sleeve 1 2, the guide rod 11 drives the square seat 14 to move, and the square seat 14 drives the strip-shaped paddle 18 to move away from the rotation center of the ball mill 1 through the L-shaped rod 16, so as to change the position of the strip-shaped paddle 18. In the ball milling stage of large pieces of raw materials, the strip-shaped paddle 18 is close to the rotation center of the ball mill 1. At this time, it can drive more large pieces of raw materials and steel balls to roll in the ball mill 1, and vigorously push and stir the large pieces of raw materials, so that the large pieces of raw materials and the large pieces of raw materials and the steel balls collide and rub against each other, thereby improving the ball milling speed of the large pieces of raw materials. When the large pieces of raw materials are turned into small pieces, the strip-shaped paddle 18 moves away from the rotation center of the ball mill 1, and the strip-shaped paddle 18 is closer to the inner wall of the ball mill 1. At this time, it can better act on the small pieces of raw materials, thereby preventing the small pieces of raw materials from being crushed. The material passes between the strip-shaped paddle 18 and the inner wall of the ball mill 1, which improves the stirring effect on the small raw materials, thereby improving the ball milling speed of the small raw materials. When the small raw materials become powdery, the arc-shaped convex strips 26 fit with the inner wall of the ball mill 1 to prevent the powdery raw materials from passing between the strip-shaped paddle 18 and the inner wall of the ball mill 1, thereby improving the stirring effect on the powdery raw materials, thereby improving the ball milling speed of the powdery raw materials. In addition, during the movement of the strip-shaped paddle 18, the number of steel balls that can be brought up gradually decreases. For large raw materials, more steel balls are brought up so that more large raw materials are impacted and broken by the steel balls, which helps to break the large raw materials. For small and powdery raw materials, the buffering effect of the small and powdery raw materials on the falling steel balls gradually increases, resulting in a gradual decrease in the impact and crushing effect of the steel balls on them.At this time, the strip-shaped paddle 18 brings up fewer steel balls, so that more steel balls can collide and rub against each other in the raw material mass with small pieces and powdered raw materials, further shortening the time required for ball milling and greatly improving the ball milling efficiency.

[0037] like Figures 6-8 As shown, in this embodiment, the rotating assembly 13 includes an L-shaped rod 16 fixed to the side of the strip-shaped paddle 18 close to the rotation center of the ball mill 1, a square seat 14 is fixed to the side of the guide rod 11 away from the driven block 9, a through hole is opened on the side of the baffle 3, the L-shaped rod 16 is located in the through groove 29, and the horizontal section of the L-shaped rod 16 is inserted into the square seat 14, the horizontal section of the L-shaped rod 16 is sleeved with a torsion spring 15, one end of the torsion spring 15 is inserted into the end of the horizontal section of the L-shaped rod 16, and the other end of the torsion spring 15 is inserted into the inner wall of the square seat 14, and a limiting block 30 is fixed to the side of the baffle 3 close to the strip-shaped paddle 18. When the strip-shaped paddle 18 contacts the steel ball, the L-shaped rod 16 fits with the limiting block 30. When the strip-shaped paddle 18 separates from the steel ball, the L-shaped rod 16 separates from the limiting block 30. The through groove 29 provides space for the movement of the L-shaped rod 16. During the rotation of the strip-shaped paddle 18, the strip-shaped paddle 1 8 Affected by the obstruction of the raw material mass, the strip paddle 18 rotates counterclockwise with the horizontal section of the L-shaped rod 16 as the axis, so that the end of the torsion spring 15 inserted into the horizontal section of the L-shaped rod 16 is subjected to force, so that the torsion spring 15 is in a twisted state, and at the same time, the L-shaped rod 16 is fitted with the limit block 30 fixed on the side of the baffle 3 to prevent the strip paddle 18 from excessively rotating and affecting the stirring effect on the raw material mass. During the rotation of the strip paddle 18, there is a situation where the block raw material is stuck between the strip paddle 18 and the inner wall of the ball mill 1. When it is separated from the raw material mass and the steel ball falls from the strip paddle 18, under the elastic force of the torsion spring 15, the strip paddle 18 rotates clockwise with the horizontal section of the L-shaped rod 16 as the axis, changing the distance between the strip paddle 18 and the inner wall of the ball mill 1, thereby releasing the stuck state of the raw material, allowing the stuck raw material to fall into the raw material mass to participate in ball milling, thereby improving the ball milling uniformity of the raw material.

[0038] like Figure 9 As shown, in the present embodiment, a strip arc surface 28 is provided on the side of the strip paddle 18 away from the rotation center of the ball mill 1, and both ends of the strip arc surface 28 are bent toward the side close to the rotation center of the ball mill 1, and the shape of the strip arc surface 28 is adapted to the shape of the inner wall of the ball mill 1. When the strip paddle 18 rotates clockwise under the elastic force of the torsion spring 15, the strip arc surface 28 on the side of the strip paddle 18 facing the inner wall of the ball mill 1 can rapidly increase the distance between the strip paddle 18 and the inner wall of the ball mill 1, so that the stuck block raw material can be more easily separated from the strip paddle 18. At the same time, under the guidance of the strip arc surface 28, the stuck block raw material can be more easily separated from the strip paddle 18, thereby effectively preventing the stuck block raw material from affecting the rotation of the strip paddle 18, thereby ensuring the continuous and stable progress of the ball milling process.

[0039] A preparation method of a solid composite hydrogen storage material, which is applied to the above-mentioned preparation device of a solid composite hydrogen storage material, includes the following steps: S1: Add the bulk raw materials and steel balls into the ball mill cylinder 1; S2: During the ball milling of the bulk raw materials by the ball mill cylinder 1, the strip-shaped baffle 18 of the ball mill cylinder 1 drives the steel balls to fall from a high place; S3: After the ball milling is completed, open the cover plate 31 of the discharge port, and the powdered raw materials are discharged from the discharge port.

[0040] Working principle: Add the bulk raw materials and steel balls into the ball mill cylinder 1 from the feed pipe 2. The ball mill cylinder 1 rotates and drives the internal strip-shaped baffle 18 to rotate synchronously. During the rotation, the strip-shaped baffle 18 cooperates with the convex part 21 to lift the steel balls to a high place, and then the steel balls fall from a high place, greatly increasing the impact force of the steel balls on the bulk raw materials, accelerating the crushing of the bulk raw materials, shortening the ball milling time, and improving the ball milling efficiency of the bulk raw materials; When the steel balls roll along the strip-shaped baffle 18, guided by the first convex strip 23, the steel balls move along the strip-shaped baffle 18. The steel balls move on the strip-shaped baffle 18, causing the steel balls on the strip-shaped baffle 18 to collide with each other, realizing the ball milling of the bulk raw materials on the strip-shaped baffle 18. And when the moving steel balls pass through the position of the second convex strip 24, further guided by the second convex strip 24, the steel balls move again, so as to ball mill the bulk raw materials on the strip-shaped baffle 18 again, further shortening the overall ball milling time and improving the ball milling efficiency of the bulk raw materials. Both the first convex strip 23 and the second convex strip 24 are semi-circular, which can reduce the resistance when the bulk and powdered raw materials pass through the first convex strip 23 and the second convex strip 24, enabling the bulk and powdered raw materials to pass through the first convex strip 23 and the second convex strip 24 smoothly, preventing the bulk and powdered raw materials from accumulating on the inclined guiding surface and affecting the blocking effect of the convex part 21 on the steel balls. And the two ends of the second convex strip 24 are bent towards the rotation center of the ball mill cylinder 1. This shape design not only helps to guide the steel balls to move irregularly, improving the ball milling effect of the bulk raw materials on the strip-shaped baffle 18, but also can further guide the flow of the bulk and powdered raw materials at the inclined guiding surface, enabling the bulk and powdered raw materials to pass through the second convex strip 24 more smoothly, and preventing the bulk and powdered raw materials from accumulating on the inclined guiding surface again and affecting the blocking effect of the convex part 21 on the steel balls; As the ball milling progresses, when the large raw materials are ball milled into small pieces, when the small raw materials are lifted by the strip-shaped baffle 18, the small raw materials and the powdered raw materials generated by subsequent ball milling can fall from several notches 20 opened on the side of the strip-shaped baffle 18, preventing the small raw materials or powdered raw materials from filling the position of the convex part 21, ensuring the stable generation of the blocking effect of the convex part 21 on the steel balls, maintaining an efficient ball milling process. The width of the notch 20 is smaller than the diameter of the steel balls, which can effectively prevent the steel balls from falling; Since there is a gap between the strip-shaped baffle 18 and the inner wall of the ball mill cylinder 1, the arc-shaped convex strip 26 can reduce the height of the gap at this place, reducing the possibility of large raw materials getting stuck in this gap. At the same time, an arc-shaped surface 27 is provided on the side of the arc-shaped convex strip 26 away from the rotation center of the ball mill cylinder 1, and the arc-shaped surface 27 faces the opposite direction of the rotation direction of the ball mill cylinder 1. When small raw materials pass between the arc-shaped convex strip 26 and the inner wall of the ball mill cylinder 1, the arc-shaped surface 27 reduces the contact time between the arc-shaped convex strip 26 and the small raw materials, reducing the probability of the small raw materials getting stuck at the arc-shaped convex strip 26, ensuring the smooth progress of the ball milling process; During the ball milling process of bulk raw materials, the push rod of the driving member 6 on the driving assembly 5 shortens, driving the driving seat 7 to move. The driving seat 7 drives the driving column 8 to squeeze the inclined surface 19 on the side of the inner wall of the inclined groove 10 on the driven block 9 away from the ball mill cylinder 1, causing the driven block 9 to drive the guide rod 11 to move along the inner wall of the guide sleeve 12. The guide rod 11 drives the square seat 14 to move, and the square seat 14 drives the strip-shaped baffle 18 to move away from the rotation center of the ball mill cylinder 1 through the L-shaped rod 16, realizing the change of the position of the strip-shaped baffle 18. During the ball milling stage of large raw materials, the strip-shaped baffle 18 is in a position close to the rotation center of the ball mill cylinder 1. At this time, it can drive more large raw materials and steel balls to roll in the ball mill cylinder 1, powerfully pushing and stirring the large raw materials, causing the large raw materials to collide and rub against each other and against the steel balls, improving the ball milling speed of the large raw materials. When the large raw materials become small, the strip-shaped baffle 18 moves away from the rotation center of the ball mill cylinder 1, and the strip-shaped baffle 18 is closer to the inner wall of the ball mill cylinder 1. At this time, it can better act on the small raw materials, preventing the small raw materials from passing through between the strip-shaped baffle 18 and the inner wall of the ball mill cylinder 1, improving the stirring effect on the small raw materials, and thus improving the ball milling speed of the small raw materials. When the small raw materials become powdery, the arc-shaped convex strip 26 fits with the inner wall of the ball mill cylinder 1, preventing the powdery raw materials from passing through between the strip-shaped baffle 18 and the inner wall of the ball mill cylinder 1, improving the stirring effect on the powdery raw materials, and thus improving the ball milling speed of the powdery raw materials. And during the movement of the strip-shaped baffle 18, the number of steel balls that can be lifted gradually decreases. For large raw materials, lifting more steel balls causes more large raw materials to be impacted by the steel balls and broken, which helps the large raw materials to break. For small and powdery raw materials, the buffering effect of the small and powdery raw materials on the falling steel balls gradually increases, resulting in a gradual decrease in the impact and breaking effect of the steel balls on them. At this time, the strip-shaped baffle 18 lifts fewer steel balls, enabling more steel balls to collide and rub against each other and against the small and powdery raw materials within the raw material mass, further shortening the time required for ball milling and greatly improving the ball milling efficiency; During the rotation of the strip paddle 18, the strip paddle 18 is affected by the obstruction of the raw material mass, causing the strip paddle 18 to rotate counterclockwise with the horizontal section of the L-shaped rod 16 as the axis, so that the torsion spring 15 inserted into the horizontal section of the L-shaped rod 16 is subjected to force, so that the torsion spring 15 is in a twisted state. At the same time, the L-shaped rod 16 is fitted with the limit block 30 fixed on the side of the baffle 3 to prevent the strip paddle 18 from excessively rotating and affecting the stirring effect on the raw material mass. During the rotation of the strip paddle 18, there is a situation where the block raw material is stuck between the strip paddle 18 and the inner wall of the ball mill 1. When it is separated from the raw material mass and the steel ball falls off the strip paddle 18, the strip paddle 18 is moved by the elastic force of the torsion spring 15. The horizontal section of the L-shaped rod 16 is used as an axis to rotate clockwise, changing the distance between the strip-shaped paddle 18 and the inner wall of the ball mill 1, thereby releasing the stuck state of the raw material, allowing the stuck raw material to fall into the raw material mass to participate in ball milling, thereby improving the uniformity of ball milling of the raw material. At the same time, a strip-shaped arc surface 28 is provided on the side of the strip-shaped paddle 18 away from the rotation center of the ball mill 1. When the strip-shaped paddle 18 rotates clockwise under the elastic force of the torsion spring 15, the strip-shaped arc surface 28 rapidly increases the distance between the strip-shaped paddle 18 and the inner wall of the ball mill 1, and under the guidance of the strip-shaped arc surface 28, the stuck raw material is more easily separated from the strip-shaped paddle 18, effectively preventing the stuck raw material from affecting the rotation of the strip-shaped paddle 18; After the ball milling is completed, the additive is added into the ball mill 1, and then the powdered raw material and the additive are ball milled and mixed. After mixing, the discharge port is rotated to a downward state, and then the cover plate 31 at the discharge port in the middle position of the outer wall of the ball mill 1 is opened, and the raw material is discharged from the discharge port to complete the entire preparation process. At the same time, due to the influence of the inner wall diameter of the ball mill 1 gradually decreasing from the middle to the two ends, the raw material and the steel ball can slide along the inclined inner wall of the ball mill 1 to the discharge port position, effectively preventing the raw material after ball milling from accumulating on the inner wall of the ball mill 1, so that the discharge of the raw material after ball milling is more comprehensive and thorough; When ball milling is required again, the cover plate 31 is fixed at the discharge port, and the driving member 6 is started to extend the push rod of the driving member 6, so that the driving seat 7 drives the driving column 8 to squeeze the inclined surface 19 of the inner wall of the inclined groove 10 on the driven block 9 close to the side of the ball mill 1, so that the driven block 9 drives the guide rod 11 to move in the opposite direction along the inner wall of the guide sleeve 12, and the guide rod 11 drives the strip plate 18 to move to the side close to the rotation center of the ball mill 1 through the square seat 14 and the L-shaped rod 16 until the strip plate 18 is restored to the position as shown in the figure. Figure 4 In the initial state shown, the bulk raw material and steel balls are added into the ball mill 1, and then the bulk raw material can be ball milled again.

[0041] The present invention covers any substitutions, modifications, equivalent methods and solutions made within the spirit and scope of the present invention.

Claims

1. A solid-state composite hydrogen storage material preparation device, including a ball milling cylinder (1), characterized in that, Also includes: A feed pipe (2), wherein the number of the feed pipes (2) is two, and the two feed pipes (2) are respectively fixed at the two ends of the ball mill (1); a baffle (3) is fixed to the inner wall of the ball mill (1), and the baffle (3) is fixedly sleeved on the outer wall of the feed pipe (2); a discharge port is opened in the middle of the outer wall of the ball mill (1), and a cover plate (31) is detachably connected to the discharge port; the inner diameter of the middle of the ball mill (1) is larger than the inner diameters of the two ends of the ball mill (1); and a plurality of convex strips (25) are fixed to the inner wall of the ball mill (1); A toggle mechanism (4), the toggle mechanism (4) comprising a toggle assembly (17) arranged inside the ball mill (1), the toggle assembly (17) comprising a plurality of strip-shaped toggle plates (18), the height of the strip-shaped toggle plates (18) being greater than the diameter of the steel ball, the strip-shaped toggle plates (18) being located between the two baffles (3), the plurality of strip-shaped toggle plates (18) being arranged along the circumference of the inner wall of the ball mill (1), the side surfaces of the strip-shaped toggle plates (18) being provided with a plurality of notches (20), the width of the notches (20) being less than the diameter of the steel ball; During operation, the ball mill barrel (1) drives the strip-shaped shifting plate (18) to rotate synchronously, and the strip-shaped shifting plate (18) drives the steel balls to fall from a high place during the rotation process.

2. The solid-state composite hydrogen storage material preparation device according to claim 1, wherein A protrusion (21) is provided on the side of the strip-shaped shifting plate (18) facing the positive rotation direction of the ball mill cylinder (1), and a V-shaped surface (22) is provided on the side of the protrusion (21) away from the rotation center of the ball mill cylinder (1).

3. The solid-state composite hydrogen storage material preparation device according to claim 2, wherein, A plurality of inclined guide surfaces (19) are provided on the side of the strip-shaped shifting plate (18) facing the positive rotation direction of the ball mill cylinder (1), the protrusion (21) is connected to the inclined guide surface (19), and the notch (20) is located between two adjacent inclined guide surfaces (19).

4. The solid-state composite hydrogen storage material preparation device according to claim 3, characterized in that A convex strip 1 (23) is fixed on the inclined guide surface (19), and a convex strip 2 (24) is symmetrically fixed on the surface of the convex strip 1 (23), and the convex strip 2 (24) is on the inclined guide surface (19).

5. The solid-state composite hydrogen storage material preparation device according to claim 4, wherein, The first convex strip (23) and the second convex strip (24) are both semicircular, and both ends of the second convex strip (24) are bent towards the rotation center of the ball mill (1).

6. The solid-state composite hydrogen storage material preparation device according to claim 1, wherein An arcuate convex strip (26) is fixed to the side of the strip-shaped shifting plate (18) away from the rotation center of the ball mill (1), the two ends of the arcuate convex strip (26) are bent toward the side close to the rotation center of the ball mill (1), and an arcuate surface (27) is formed on the side of the arcuate convex strip (26) away from the rotation center of the ball mill (1), the arcuate surface (27) faces in the opposite direction to the rotation direction of the ball mill (1), and the shape of the arcuate convex strip (26) is adapted to the shape of the inner wall of the ball mill (1).

7. The solid-state composite hydrogen storage material preparation device according to claim 1, characterized in that The toggle mechanism (4) further comprises a driving assembly (5) arranged on the outer wall of the ball mill (1), the driving assembly (5) comprising a plurality of driving members (6) mounted on the outer wall of the ball mill (1), the driving member (6) being an electric push rod, a driving seat (7) being fixed to the telescopic end of the driving member (6), a driving column (8) being fixed to the inner wall of the driving seat (7), a driven block (9) being arranged inside the driving seat (7), an inclined groove (10) being provided on the side of the driven block (9), the driving column (8) being slidably connected in the inclined groove (10), and A guide rod (11) is fixed to one side of the movable block (9) close to the ball mill (1); an end of the guide rod (11) away from the driven block (9) movably penetrates the ball mill (1) and extends into the interior of the ball mill (1); a guide sleeve (12) is fixed to the inner wall of the ball mill (1); the inner wall of the guide sleeve (12) is slidably connected to the surface of the guide rod (11); a rotating assembly (13) is provided at one end of the guide rod (11) away from the driven block (9); the rotating assembly (13) is used for rotating the strip-shaped paddle (18) after separation from the steel ball.

8. The solid-state composite hydrogen storage material preparation device according to claim 7, wherein The rotating assembly (13) comprises an L-shaped rod (16) fixed to a side of the strip-shaped shifting plate (18) close to the rotation center of the ball mill (1), a square seat (14) is fixed to a side of the guide rod (11) away from the driven block (9), a through hole is opened on the side of the baffle (3), the L-shaped rod (16) is located in the through groove (29), and the horizontal section of the L-shaped rod (16) is inserted into the square seat (14), and the horizontal section of the L-shaped rod (16) is sleeved with a torsion spring (15) ), one end of the torsion spring (15) is inserted into the end of the horizontal section of the L-shaped rod (16), and the other end of the torsion spring (15) is inserted into the inner wall of the square seat (14). A limit block (30) is fixed on one side of the baffle plate (3) close to the strip-shaped paddle plate (18). When the strip-shaped paddle plate (18) contacts the steel ball, the L-shaped rod (16) fits the limit block (30). When the strip-shaped paddle plate (18) separates from the steel ball, the L-shaped rod (16) separates from the limit block (30).

9. The solid-state composite hydrogen storage material preparation device according to claim 8, characterized in that A strip-shaped arc surface (28) is provided on a side of the strip-shaped shifting plate (18) away from the rotation center of the ball mill (1), and both ends of the strip-shaped arc surface (28) are bent toward a side close to the rotation center of the ball mill (1), and the shape of the strip-shaped arc surface (28) is adapted to the shape of the inner wall of the ball mill (1).

10. A method for preparing a solid composite hydrogen storage material, which uses the solid composite hydrogen storage material preparation device described in any one of claims 1-9, and is characterized in that, The following steps are involved: S1: Add bulk raw materials and steel balls into a ball mill (1); S2: During the process of ball milling the block raw material by the ball mill (1), the strip-shaped paddle (18) of the ball mill (1) drives the steel balls to a high place and then drops them; S3: After the ball milling is completed, the cover plate (31) of the discharge port is opened, and the powdered raw material is discharged from the discharge port.

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