Grouting machine for ceramic production

Abstract

The invention relates to the technical field of ceramic production, and discloses a grouting machine for ceramic production, which comprises a mounting plate, universal wheels are fixedly connected to four corners of the bottom of the mounting plate, an automatic feeding mechanism is arranged on the left side of the top of the mounting plate, and a stirring mechanism is arranged on the right side of the automatic feeding mechanism. The stirring mechanism is arranged in the middle of the top of the mounting plate, and the discharging mechanism is arranged on the right side of the stirring mechanism. According to the grouting machine for ceramic production, through the arranged stirring mechanism, in the stirring process of the stirring shaft, ceramic raw materials can be fully mixed, the quality of the ceramic raw materials is improved to a certain degree, and use of the ceramic raw materials in the later period is facilitated; the ceramic raw materials in the mounting shell can be stirred and transported again, the phenomenon that the ceramic raw materials are settled and even blocked due to long-time immobility can be avoided, it is ensured that the ceramic raw materials can be normally processed subsequently, and meanwhile the discharging speed of the ceramic raw materials is increased.

Description

Technical Field

[0001] This invention relates to the field of ceramic production technology, specifically to a slurry injection machine for ceramic production. Background Technology

[0002] Ceramics is a general term for pottery and porcelain, and it is also a type of Chinese arts and crafts. As early as the Neolithic Age, my country had painted pottery and black pottery with a rough and simple style. Pottery and porcelain differ in texture and properties. Pottery is made primarily from clay with high viscosity and plasticity; it is opaque, has fine pores, and slight water absorption, producing a dull sound when struck. Porcelain is made from clay, feldspar, and quartz; it is translucent, non-absorbent, corrosion-resistant, and has a hard and dense body, producing a crisp sound when struck. Traditional Chinese ceramic arts and crafts are of high quality and beautiful form, possessing high artistic value and renowned worldwide. Traditional ceramics, also known as ordinary ceramics, are products fired primarily from natural silicates such as clay. Modern ceramics, also known as new ceramics, fine ceramics, or special ceramics, commonly use non-silicate chemical raw materials or artificial synthetic raw materials, such as oxides (alumina, zirconium oxide, titanium oxide, etc.) and non-oxides (silicon nitride, boron carbide, etc.). The production process of ceramics typically requires the use of slip casting machines.

[0003] Patent announcement CN218375311U discloses a grouting machine, including a grouting machine body. A connecting end is connected to one side of the grouting machine body, and a connecting sleeve is threaded onto one end of the connecting end. A mounting bracket is fixed to one side of the outer surface of the connecting sleeve, and an adjusting screw is threaded onto the middle of the upper surface of the mounting bracket. One end of the adjusting screw rotates to a free-limiting insert. Multiple slots are opened on one end of the outer surface of the connecting end. A grouting pipe body is connected to one side of the connecting sleeve, and a sliding hole is opened on the outer surface of the connecting sleeve. This grouting machine, by setting an adjusting screw, mounting bracket, limiting insert, and slots, and inserting the limiting insert into the slot, achieves the limitation of the connecting sleeve. During the operation of this design, when encountering excessive pressure, the limiting insert and slots can resist the pressure, preventing slippage at the connecting sleeve and connecting end, which would make it difficult to disassemble the grouting pipe body.

[0004] The applicant believes that the following drawbacks exist: by storing ceramic raw materials inside the grouting pipe body, since the grouting pipe body does not have the function of guiding the ceramic raw materials, the ceramic raw materials will precipitate or even clump inside the grouting pipe body, which will also result in a low discharge rate of the ceramic raw materials and thus be defective. Summary of the Invention

[0005] The purpose of this invention is to provide a grouting machine for ceramic production to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a grouting machine for ceramic production, including a mounting plate, with universal wheels fixedly connected to the four corners of the bottom of the mounting plate, an automatic feeding mechanism provided on the top left side of the mounting plate, a stirring mechanism provided on the right side of the automatic feeding mechanism, the stirring mechanism being located in the middle of the top of the mounting plate, and a discharge mechanism being located on the right side of the stirring mechanism, the discharge mechanism being located on the top right side of the mounting plate.

[0007] The stirring mechanism includes a motor, which is fixedly connected to the top of the mounting plate. A rotating rod is fixedly connected to the top of the motor. There are two rotating rods, one of which is rotatably connected to the top of the mounting plate. A first pulley set is driven to the surface of each of the two rotating rods. A support frame is rotatably connected to the surface of each of the two rotating rods. The support frame is fixedly connected to the top of the mounting plate. There are two first pulley sets. A first rotating shaft is driven to the side of each first pulley set away from the rotating rod. The first rotating shaft is rotatably connected to the middle of the support frame.

[0008] According to the above technical solution, a stirring drum is provided at the bottom of the support frame, and a stirring shaft is provided inside the stirring drum. The first rotating shaft is fixedly connected to one side of the stirring shaft. Several stirring shafts are provided, and the several stirring shafts are arranged in a ring inside the stirring drum. The first rotating shaft is rotatably connected to the bottom inside the stirring drum. Support seats are fixedly connected to the bottom of both sides of the stirring drum. The support seats are fixedly connected to the top of the mounting plate. A discharge pipe is fixedly connected to the bottom of the stirring drum. During the stirring process of the stirring shaft, the ceramic raw materials can be fully mixed, which improves the quality of the ceramic raw materials to a certain extent and is beneficial to the subsequent use of the ceramic raw materials.

[0009] According to the above technical solution, a second pulley set is driven to the surface of the rotating rod, and a worm gear is driven to the side of the second pulley set away from the rotating rod. The worm gear is rotatably connected to the top of the mounting plate, and a worm wheel meshes with the surface of the worm gear. The worm wheel is located on the top of the mounting plate. Under the linkage action formed by the second pulley set, the worm gear and the worm wheel can be driven to rotate synchronously. With the cooperation of the worm wheel and the worm gear, the second rotating shaft and the auger can be driven to rotate.

[0010] According to the above technical solution, the inner ring of the worm gear is fixedly connected to a second rotating shaft, and a mounting shell is rotatably connected to the surface of the second rotating shaft. The mounting shell is fixedly connected to the top of the mounting plate, and an auger is fixedly connected to the surface of the second rotating shaft. The auger is set inside the mounting shell. During the rotation of the auger, the ceramic raw materials inside the mounting shell can be stirred and transported again, which can prevent the ceramic raw materials from settling or even clumping due to prolonged stillness, and ensure that the ceramic raw materials can be processed normally in the future.

[0011] According to the above technical solution, a second support plate is fixedly connected to the left side surface of the mounting shell, the second support plate is rotatably connected to the surface of the worm gear, a first support plate is rotatably connected to the surface of the second rotating shaft, the first support plate is fixedly connected to the top of the mounting plate, and a first connecting pipe is fixedly connected to the right side of the mounting shell. The first and second support plates provide support for the worm gear and the second rotating shaft, preventing the worm gear and the second rotating shaft from shaking.

[0012] According to the above technical solution, the discharge mechanism includes a box body, which is fixedly connected to the right side of the first connecting pipe and the top right side of the mounting plate. A fixing plate is fixedly connected to the top of the box body. The box body serves to store ceramic raw materials.

[0013] According to the above technical solution, a second connecting pipe is provided inside the box, and a grouting pump is fixedly connected to one side of the second connecting pipe. The grouting pump is fixedly connected to the top of the fixed plate. Under the action of the grouting pump, the ceramic raw materials inside the installation shell can be discharged from the other side of the grouting pump through the first connecting pipe and the second connecting pipe.

[0014] According to the above technical solution, the automatic feeding mechanism includes a first fixed frame, which is fixedly connected to the top left side of the mounting plate. There are two first fixed frames, which are symmetrically arranged. A conveyor belt is rotatably connected between the two first fixed frames. Under the action of the conveyor belt, the ceramic raw materials can be automatically fed. Electric feeding replaces manual feeding, saving time, effort and labor, and improving the efficiency of ceramic raw material processing and production.

[0015] According to the above technical solution, baffles are rotatably connected to both sides of the conveyor belt surface, a guide plate is fixedly connected to the right side of the baffle, and a second fixed frame is rotatably connected to the right side of the conveyor belt. The second fixed frame is fixedly connected to the top of the mounting plate. Under the action of the guide plate, the ceramic raw materials can be automatically guided into the interior of the mixing drum.

[0016] According to the above technical solution, a positioning plate is fixedly connected to the surface of the baffle. The positioning plate is fixedly connected to the top of the mounting plate. The number of positioning plates is four, and two positioning plates are set at equal intervals. The positioning plates improve the stability of the conveyor belt and prevent the conveyor belt from shifting due to excessive weight of ceramic raw materials.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This grouting machine for ceramic production, through its set mixing mechanism, can fully mix the ceramic raw materials during the mixing process of the mixing shaft, which improves the quality of the ceramic raw materials to a certain extent and is beneficial to the subsequent use of the ceramic raw materials. During the rotation of the auger, the ceramic raw materials inside the mounting shell can be mixed and transported again, which can prevent the ceramic raw materials from settling or even clumping due to prolonged stillness, ensuring that the ceramic raw materials can be processed normally in the future, and at the same time improving the discharge speed of the ceramic raw materials.

[0018] 2. This grouting machine for ceramic production, through its automatic feeding mechanism, places ceramic raw materials onto the surface of a conveyor belt. Under the action of the conveyor belt, the ceramic raw materials are automatically fed, replacing manual feeding with electric power, saving time, effort, and labor, and improving the efficiency of ceramic raw material processing and production.

[0019] 3. This grouting machine for ceramic production, through its discharge mechanism, can discharge the ceramic raw materials inside the housing through the first connecting pipe and the second connecting pipe from the other side of the grouting pump by starting the grouting pump, thereby achieving the purpose of discharging the ceramic raw materials. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall inclined plane structure of the present invention; Figure 3 This is a schematic diagram of the stirring mechanism of the present invention; Figure 4 This is a schematic diagram of part of the stirring mechanism of the present invention; Figure 5 yes Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the automatic feeding mechanism of the present invention; Figure 7 This is a schematic diagram of the discharge mechanism of the present invention.

[0021] In the diagram: 1. Mounting plate; 2. Mixing mechanism; 21. First pulley group; 22. Support frame; 23. Mixing shaft; 24. Mixing drum; 25. Rotating rod; 26. First rotating shaft; 27. Second rotating shaft; 28. Screwdriver; 29. ​​Second pulley group; 201. Mounting shell; 202. Motor; 203. First support plate; 204. Worm gear; 205. Worm; 206. Second support plate; 207. Support base; 208. First connecting pipe; 3. Automatic feeding mechanism; 31. Conveyor belt; 32. Baffle; 33. First fixed frame; 34. Second fixed frame; 35. Guide plate; 36. Positioning plate; 4. Discharge mechanism; 41. Fixed plate; 42. Box body; 43. Grouting pump; 44. Second connecting pipe; 5. Casters. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides a technical solution: Example 1:

[0024] Combination Figure 1-2 to Figure 3-5 A grouting machine for ceramic production includes a mounting plate 1. Universal wheels 5 are fixedly connected to the four corners of the bottom of the mounting plate 1. An automatic feeding mechanism 3 is provided on the top left side of the mounting plate 1. A stirring mechanism 2 is provided on the right side of the automatic feeding mechanism 3. The stirring mechanism 2 is located in the middle of the top of the mounting plate 1. A discharge mechanism 4 is provided on the right side of the stirring mechanism 2. The discharge mechanism 4 is located on the top right side of the mounting plate 1.

[0025] The stirring mechanism 2 includes a motor 202, which is fixedly connected to the top of the mounting plate 1. A rotating rod 25 is fixedly connected to the top of the motor 202. There are two rotating rods 25, one of which is rotatably connected to the top of the mounting plate 1. A first pulley set 21 is drivenly connected to the surface of both rotating rods 25. A support frame 22 is rotatably connected to the surface of the two rotating rods 25. The support frame 22 is fixedly connected to the top of the mounting plate 1. There are two first pulley sets 21. A first rotating shaft 26 is drivenly connected to the side of the two first pulley sets 21 away from the rotating rod 25. The first rotating shaft 26 is rotatably connected to the middle of the support frame 22.

[0026] Furthermore, a stirring drum 24 is provided at the bottom of the support frame 22, and a stirring shaft 23 is provided inside the stirring drum 24. A first rotating shaft 26 is fixedly connected to one side of the stirring shaft 23. Several stirring shafts 23 are provided, and the several stirring shafts 23 are arranged in a ring inside the stirring drum 24. The first rotating shaft 26 is rotatably connected to the bottom inside the stirring drum 24. Support seats 207 are fixedly connected to the bottom of both sides of the stirring drum 24. The support seats 207 are fixedly connected to the top of the mounting plate 1. A discharge pipe is fixedly connected to the bottom of the stirring drum 24. During the stirring process of the stirring shaft 23, the ceramic raw materials can be fully mixed, which improves the quality of the ceramic raw materials to a certain extent and is beneficial to the subsequent use of the ceramic raw materials.

[0027] Furthermore, a second pulley set 29 is driven to the surface of the rotating rod 25. A worm gear 205 is driven to the side of the second pulley set 29 away from the rotating rod 25. The worm gear 205 is rotatably connected to the top of the mounting plate 1. A worm wheel 204 meshes with the surface of the worm gear 205. The worm wheel 204 is located on the top of the mounting plate 1. Under the linkage formed by the second pulley set 29, the worm gear 205 and the worm wheel 204 can be driven to rotate synchronously. With the cooperation of the worm wheel 204 and the worm gear 205, the second rotating shaft 27 and the auger 28 can be driven to rotate.

[0028] Furthermore, a second rotating shaft 27 is fixedly connected to the inner ring of the worm gear 204, and a mounting shell 201 is rotatably connected to the surface of the second rotating shaft 27. The mounting shell 201 is fixedly connected to the top of the mounting plate 1, and an auger 28 is fixedly connected to the surface of the second rotating shaft 27. The auger 28 is disposed inside the mounting shell 201. During the rotation of the auger 28, the ceramic raw materials inside the mounting shell 201 can be stirred and transported again, which can prevent the ceramic raw materials from settling or even clumping due to prolonged stillness, and ensure that the ceramic raw materials can be processed normally in the future.

[0029] Furthermore, a second support plate 206 is fixedly connected to the left side surface of the mounting housing 201. The second support plate 206 is rotatably connected to the surface of the worm gear 205. A first support plate 203 is rotatably connected to the surface of the second rotating shaft 27. The first support plate 203 is fixedly connected to the top of the mounting plate 1. A first connecting pipe 208 is fixedly connected to the right side of the mounting housing 201. The first support plate 203 and the second support plate 206 provide support for the worm gear 205 and the second rotating shaft 27, preventing the worm gear 205 and the second rotating shaft 27 from shaking. Example 2:

[0030] See Figure 6Furthermore, based on Embodiment 1, the discharge mechanism 4 includes a box 42, which is fixedly connected to the right side of the first connecting pipe 208 and the top right side of the mounting plate 1. A fixing plate 41 is fixedly connected to the top of the box 42. The box 42 serves to store ceramic raw materials.

[0031] Furthermore, a second connecting pipe 44 is provided inside the housing 42. A grouting pump 43 is fixedly connected to one side of the second connecting pipe 44. The grouting pump 43 is fixedly connected to the top of the fixed plate 41. Under the action of the grouting pump 43, the ceramic raw material inside the mounting shell 201 can be discharged from the other side of the grouting pump 43 through the first connecting pipe 208 and the second connecting pipe 44. Example 3:

[0032] See Figure 7 Furthermore, based on Embodiment 1 and Embodiment 2, the automatic feeding mechanism 3 further includes a first fixed frame 33, which is fixedly connected to the top left side of the mounting plate 1. There are two first fixed frames 33, which are symmetrically arranged. A conveyor belt 31 is rotatably connected between the two first fixed frames 33. Under the action of the conveyor belt 31, the ceramic raw materials can be automatically fed. Electric feeding replaces manual feeding, saving time, effort and labor, and improving the efficiency of ceramic raw material processing and production.

[0033] Furthermore, baffles 32 are rotatably connected to both sides of the surface of the conveyor belt 31. A guide plate 35 is fixedly connected to the right side of the baffle 32. A second fixed frame 34 is rotatably connected to the right side of the conveyor belt 31. The second fixed frame 34 is fixedly connected to the top of the mounting plate 1. Under the action of the guide plate 35, the ceramic raw materials can be automatically guided into the interior of the mixing drum 24.

[0034] Furthermore, a positioning plate 36 is fixedly connected to the surface of the baffle 32. The positioning plate 36 is fixedly connected to the top of the mounting plate 1. Four positioning plates 36 are set, and two positioning plates 36 are set at equal intervals. The positioning plates 36 improve the stability of the conveyor belt 31 and prevent the conveyor belt 31 from shifting due to excessive weight of ceramic raw materials.

[0035] In actual operation, when this device is used, the ceramic raw material is first placed on the surface of the conveyor belt 31. Under the action of the conveyor belt 31, the ceramic raw material is automatically fed, replacing manual feeding with electric feeding, saving time, effort, and labor, and improving the efficiency of ceramic raw material processing. Then, under the action of the guide plate 35, the ceramic raw material is automatically guided into the mixing drum 24. Simultaneously, by starting the motor 202, one of the rotating rods 25 is driven to rotate. Under the linkage of the first pulley group 21, the first rotating shaft 26 and the mixing shaft 23 rotate synchronously. During the mixing process of the mixing shaft 23, the ceramic raw material is thoroughly mixed, improving its quality to a certain extent and benefiting its later use. After the ceramic raw material is mixed, it passes through the mixing drum 24. 4. The discharge pipe at the bottom falls into the interior of the mounting shell 201. During the rotation of the rotating rod 25, and under the linkage formed by the second pulley group 29, the worm 205 and worm wheel 204 can be driven to rotate synchronously. With the cooperation of the worm wheel 204 and worm 205, the second rotating shaft 27 and auger 28 can be driven to rotate. During the rotation of the auger 28, the ceramic raw material inside the mounting shell 201 can be stirred and transported again, which can prevent the ceramic raw material from settling or even clumping due to prolonged stillness, ensuring that the ceramic raw material can be processed normally in the future. At the same time, the discharge speed of the ceramic raw material is increased. Finally, by starting the grouting pump 43, the ceramic raw material inside the mounting shell 201 can be discharged from the other side of the grouting pump 43 through the first connecting pipe 208 and the second connecting pipe 44, thereby achieving the purpose of discharging the ceramic raw material.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grouting machine for ceramic production, comprising a mounting plate (1), characterized in that: The mounting plate (1) is fixedly connected to four corners of the bottom with casters (5). An automatic feeding mechanism (3) is provided on the top left side of the mounting plate (1). A stirring mechanism (2) is provided on the right side of the automatic feeding mechanism (3). The stirring mechanism (2) is located in the middle of the top of the mounting plate (1). A discharge mechanism (4) is provided on the right side of the stirring mechanism (2). The discharge mechanism (4) is located on the top right side of the mounting plate (1). The stirring mechanism (2) includes a motor (202), which is fixedly connected to the top of the mounting plate (1). A rotating rod (25) is fixedly connected to the top of the motor (202). There are two rotating rods (25), one of which is rotatably connected to the top of the mounting plate (1). The surfaces of the two rotating rods (25) are connected to a first pulley group (21). The surfaces of the two rotating rods (25) are rotatably connected to a support frame (22). The support frame (22) is fixedly connected to the top of the mounting plate (1). There are two first pulley groups (21). The side of the two first pulley groups (21) away from the rotating rod (25) is connected to a first rotating shaft (26). The first rotating shaft (26) is rotatably connected to the middle of the support frame (22).

2. The slip casting machine for ceramic production according to claim 1, characterized in that: The bottom of the support frame (22) is provided with a stirring cylinder (24), and a stirring shaft (23) is provided inside the stirring cylinder (24). The first rotating shaft (26) is fixedly connected to one side of the stirring shaft (23). The number of stirring shafts (23) is several, and the several stirring shafts (23) are arranged in a ring inside the stirring cylinder (24). The first rotating shaft (26) is rotatably connected to the bottom inside the stirring cylinder (24). Support seats (207) are fixedly connected to the bottom of both sides of the stirring cylinder (24). The support seats (207) are fixedly connected to the top of the mounting plate (1). A discharge pipe is fixedly connected to the bottom of the stirring cylinder (24).

3. The slip casting machine for ceramic production according to claim 1, characterized in that: One of the rotating rods (25) is connected to a second pulley group (29) via a transmission connection. The second pulley group (29) is connected to a worm gear (205) on the side away from the rotating rod (25). The worm gear (205) is rotatably connected to the top of the mounting plate (1). A worm wheel (204) meshes with the surface of the worm gear (205). The worm wheel (204) is located on the top of the mounting plate (1).

4. The slip casting machine for ceramic production according to claim 3, characterized in that: The inner ring of the worm gear (204) is fixedly connected to a second rotating shaft (27), and the surface of the second rotating shaft (27) is rotatably connected to a mounting shell (201). The mounting shell (201) is fixedly connected to the top of the mounting plate (1), and the surface of the second rotating shaft (27) is fixedly connected to an auger (28). The auger (28) is located inside the mounting shell (201).

5. A slip casting machine for ceramic production according to claim 4, characterized in that: A second support plate (206) is fixedly connected to the left side surface of the mounting shell (201). The second support plate (206) is rotatably connected to the surface of the worm (205). A first support plate (203) is rotatably connected to the surface of the second rotating shaft (27). The first support plate (203) is fixedly connected to the top of the mounting plate (1). A first connecting pipe (208) is fixedly connected to the right side of the mounting shell (201).

6. A slip casting machine for ceramic production according to claim 5, characterized in that: The discharge mechanism (4) includes a box (42), which is fixedly connected to the right side of the first connecting pipe (208), and is fixedly connected to the top right side of the mounting plate (1). A fixing plate (41) is fixedly connected to the top of the box (42).

7. A slip casting machine for ceramic production according to claim 6, characterized in that: The box (42) is provided with a second connecting pipe (44), and a grouting pump (43) is fixedly connected to one side of the second connecting pipe (44). The grouting pump (43) is fixedly connected to the top of the fixed plate (41).

8. The slip casting machine for ceramic production according to claim 1, characterized in that: The automatic feeding mechanism (3) includes a first fixed frame (33), which is fixedly connected to the top left side of the mounting plate (1). There are two first fixed frames (33), which are symmetrically arranged. A conveyor belt (31) is rotatably connected between the two first fixed frames (33).

9. The slip casting machine for ceramic production according to claim 8, characterized in that: Both sides of the conveyor belt (31) are rotatably connected to baffles (32), and a guide plate (35) is fixedly connected to the right side of the baffle (32). A second fixing frame (34) is rotatably connected to the right side of the conveyor belt (31), and the second fixing frame (34) is fixedly connected to the top of the mounting plate (1).

10. The slip casting machine for ceramic production according to claim 9, characterized in that: The baffle (32) is fixedly connected to a positioning plate (36), which is fixedly connected to the top of the mounting plate (1). The number of positioning plates (36) is four, and two positioning plates (36) are set at equal intervals.

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