Raw material conveying device for coating production

Abstract

The invention relates to the technical field of conveying devices, and discloses a raw material conveying device for coating production, which comprises a fan, a first air pipe, a second air pipe, a spiral conveying pipe and a buffer tank, a turbulent flow assembly is arranged in the buffer tank, the turbulent flow assembly comprises a flow dividing cylinder, and a conical disc is rotationally mounted in the buffer tank; the turbulent flow assembly further comprises a flow guide mechanism. And a stirring and rotating assembly is arranged in the buffer tank. Through the arrangement of the turbulent flow assembly, the conical disc and the flow dividing barrel are matched, the intermittent pulse jetting effect of airflow is achieved, raw materials and air entering the buffer tank are distributed into the two cavities and subjected to buffer pressurization firstly, then the raw materials and the air are divided into two air streams to be jetted out in a pulse mode, and the two air streams carry the raw materials to collide and be mixed; and the uniformity of the raw materials is recovered, so that the raw material layering phenomenon caused by long-distance conveying is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of conveying device technology, and specifically to a raw material conveying device for paint production. Background Technology

[0002] Coating raw materials encompass resins, pigments, fillers, solvents, and various functional additives. These raw materials come in diverse forms, including powders, granules, and liquids. They are typically stored in dedicated storage tanks. To meet the requirements of subsequent processing steps such as mixing, grinding, and dispersing, specific conveying devices are needed to stably transport the raw materials from the storage tanks to the corresponding processing equipment. Existing raw material conveying devices include various types such as screw conveyors, belt conveyors, and pneumatic conveyors. Among these, pneumatic conveying devices are widely used in the conveying of coating powder raw materials. The principle is to use the airflow generated by a fan as the conveying power, so that the raw materials move synchronously with the airflow in a closed pipe, thereby achieving long-distance closed-loop conveying of the raw materials.

[0003] However, the existing technology has the following problems: Because some coating powder raw materials need to be mixed with multiple raw materials in precise proportions before storage, there may be quality differences between the raw material particles. When the raw materials are transported over long distances by pneumatic devices, the heavier raw material particles gradually tend to sink in the airflow channel. This makes it easy for the raw materials in the downstream conveying pipe to form a flow trend where the lighter raw material particles are on top and the heavier raw material particles are on the bottom, thus forming a stratification of the raw materials. As the conveying time increases, the heavier raw material particles at the bottom of the pipe will gradually settle, resulting in some heavy raw material particles remaining in the pipe and not being discharged in time. This causes a difference in the raw material ratio discharged from the pipe outlet compared to the raw material ratio entering the pipe inlet, and the uniformity of the raw materials also decreases, affecting the final product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a raw material conveying device for paint production in order to solve the above-mentioned problems. It aims to overcome the shortcomings of existing pneumatic conveying devices, which are prone to depositing heavy raw material particles in the conveying pipeline due to differences in the quality of raw material particles. This results in a difference between the raw material ratio discharged from the pipeline outlet and the raw material ratio entering the pipeline inlet, and also reduces the uniformity of the raw materials. Details are described below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a raw material conveying device for paint production, comprising a fan, a first air duct, a second air duct, a spiral conveying pipe, and a buffer tank. The buffer tank is located between the first and second air ducts, and its two ends are configured with varying diameters. A flow-dispersing component is provided inside the buffer tank, comprising a flow-dividing cylinder fixedly connected to the inner wall of the buffer tank. Two first through holes are opened at the end of the flow-dividing cylinder away from the first air duct. A conical disc is rotatably mounted inside the buffer tank, and the conical disc has four second through holes. A driving part is provided on the buffer tank for driving the conical disc to rotate, and the second through holes can coincide with the first through holes when the conical disc rotates. The flow-dispersing component also includes a flow-guiding mechanism for uniformly guiding the raw material entering the buffer tank into the flow-dividing cylinder. A swirling component is provided inside the buffer tank for swirling and mixing the raw material sprayed from the second through holes.

[0006] Preferably, the blower is connected to the first air duct, the two ends of the spiral conveying pipe are respectively connected to the upstream storage tank and the first air duct, and the end of the second air duct away from the buffer tank is connected to the downstream process equipment.

[0007] Preferably, the inner wall of the flow divider is fixedly connected to two partitions, and a central cylinder is fixedly connected between the two partitions. The two partitions and the central cylinder divide the flow divider into upper and lower chambers, and the two first through holes of the flow divider are located in the two chambers respectively.

[0008] Preferably, the drive unit includes a gear ring, a motor, and a drive gear. The motor is fixedly mounted on the outer wall of the buffer tank, and the drive gear is fixedly connected to the output end of the motor. A circular groove is provided at the rotatable connection between the conical disk and the buffer tank. The gear ring is fixedly connected in the circular groove of the conical disk. A square groove is provided in the area of ​​the buffer tank at the top of the gear ring, and the drive gear is located in the square groove and meshes with the gear ring.

[0009] Preferably, the flow guiding mechanism includes a rotating shaft, a mounting shaft, and a flow guiding cone. A connecting frame is fixedly connected to the inner side of the conical disk. The rotating shaft is fixedly connected to the center of the connecting frame. The mounting shaft is rotatably installed through the center cylinder at the end away from the connecting frame. The flow guiding cone is fixedly connected to the end of the mounting shaft away from the center cylinder. The outer wall of the flow guiding cone is provided with multiple flow guiding plates. The flow guiding cone is located between the connection between the buffer tank and the first air duct and the diverter cylinder. A gear ring and three planetary gears are rotatably connected to the inner wall of the end of the center cylinder away from the connecting frame. All three planetary gears mesh with the inner side of the gear ring. The gear ring is fixedly connected to the rotating shaft. A sun gear is connected to the end of the mounting shaft away from the flow guiding cone. The sun gear meshes with the three planetary gears.

[0010] Preferably, the central cylinder is provided with a vibration mechanism, which includes four vibration rods. All four vibration rods are fixedly installed on the central cylinder. The outer wall of the rotating shaft is fixedly connected with multiple elastic plates in a circumferential array. One end of the vibration rod located inside the central cylinder is located on the movement trajectory of the elastic plate. The rod body located outside the central cylinder is fixedly connected with multiple fins. The contact between the elastic plates and the vibration rod can cause the vibration rod and the fins to vibrate.

[0011] Preferably, the agitator assembly includes a wave ring, three sleeves, and three sliding shafts. A connecting arm is fixedly connected to the inner wall of the buffer tank. The wave ring is fixedly mounted on the connecting arm. The connecting frame has three legs. The three sleeves are respectively fixedly mounted through the three legs of the connecting frame. The three sliding shafts are respectively slidably connected through the three sleeves. A vortex blade is installed at one end of each sliding shaft, and the other end of each sliding shaft contacts the wave ring. An annular groove is formed on the inner wall of each sleeve. A flange is formed on the outer wall of each sliding shaft. A sliding tongue is fixedly connected to the flange of each sliding shaft. The sliding tongue is slidably connected to the annular groove. A spring seat is connected to the inner wall of each sleeve by a spring. The spring seat slidably abuts against the flange of the sliding shaft.

[0012] Preferably, the wave ring has an undulating annular wave surface, and the sliding shaft can reciprocate when sliding along the annular wave surface. When the sliding shaft reciprocates, it can rotate reciprocally through the cooperation of the annular inclined groove and the sliding tongue.

[0013] Preferably, a stabilizing rod is fixedly installed on the inner wall of the buffer tank, and the end of the rotating shaft away from the guide cone is rotatably connected to the stabilizing rod. Two straight scraper rods and two arc-shaped scraper rods are fixedly connected to the outer wall of the rotating shaft. The two straight scraper rods are in contact with the inner wall of the buffer tank, and the two arc-shaped scraper rods are in contact with the inner wall of the buffer tank near the variable diameter area of ​​the second air duct.

[0014] The beneficial effects are: 1. This raw material conveying device for paint production, through the setting of the turbulence component, enables the conical disk and the flow divider to cooperate to achieve an intermittent pulse jet effect of airflow. The raw materials and air entering the buffer tank are first distributed into two chambers and buffered and pressurized, and then divided into two airflows that are pulsed out. The two airflows carry the raw materials and collide and mix, restoring the uniformity of the raw materials, thereby effectively solving the problem of raw material stratification that occurs during long-distance transportation.

[0015] 2. The raw material conveying device for paint production, through the setting of the flow guiding mechanism, enables the flow guiding cone to drive the airflow in contact with the flow guiding cone and the raw material to form a swirling flow when rotating. This allows heavier and lighter raw material particles to be evenly distributed into the two chambers of the flow divider after passing over the surface of the flow guiding cone and generating a swirling flow. This allows heavier and lighter raw material particles to continuously and alternately enter the same chamber, enabling the raw materials to undergo preliminary mixing upon entering the chamber and improving the uniformity of subsequent pulse jet mixing.

[0016] 3. The raw material conveying device for coating production, through the setting of the vibration mechanism, allows the airflow and raw materials passing through the two chambers to pass around the fins. The fins can form turbulence around them through vibration, causing irregular disturbance to the airflow and raw materials passing around them, thereby promoting the collision and mixing between raw material particles and further improving the uniformity of raw material distribution.

[0017] 4. The raw material conveying device for paint production, through the setting of the swirling component, allows the airflow and raw material ejected from the second through hole to come into contact with the three swirling blades. The three swirling blades perform multi-directional shearing and mixing of the contacting airflow and raw material through compound motion, so that the raw material and airflow are fully intertwined and mixed. The physical swirling enhances the mixing uniformity between the raw material and airflow, thereby improving the uniformity of raw material conveying. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the spiral conveying pipe structure of the present invention; Figure 3 This is a schematic diagram of the buffer tank structure of the present invention; Figure 4 This is a schematic diagram of the turbulence component structure of the present invention; Figure 5 This is a schematic diagram of the flow divider structure of the present invention; Figure 6 This is a schematic diagram of the central tube structure of the present invention; Figure 7 This is a schematic diagram of the flow guiding mechanism of the present invention; Figure 8 This is a schematic diagram of the guide cone structure of the present invention; Figure 9 This is a schematic diagram of the vibrating mechanism of the present invention; Figure 10 This is a schematic diagram of the stirring assembly structure of the present invention; Figure 11 This is a schematic diagram of the blade structure of the present invention; Figure 12 This is a schematic diagram of the sliding shaft structure of the present invention; Figure 13 This is a schematic diagram of the arc-shaped scraper structure of the present invention.

[0020] The following are the annotations in the attached diagram: 1. Fan; 2. First air duct; 3. Second air duct; 4. Spiral conveyor pipe; 5. Buffer tank; 6. Aerodynamic components; 61. Diverter cylinder; 62. Baffle plate; 63. Central cylinder; 64. Conical disc; 65. Gear ring; 66. Motor; 67. Drive gear; 7. Flow guiding mechanism; 71. Connecting frame; 72. Rotating shaft; 73. Gear ring; 74. Planetary gear; 75. Sun gear; 76. Mounting shaft; 77. Flow guide cone; 78. Stabilizer bar; 8. Vibration mechanism; 81. Elastic sheet; 82. Vibrating rod; 83. Fin; 9. Stirring assembly; 91. Connecting arm; 92. Wave ring; 93. Sleeve; 94. Sliding shaft; 95. Sliding tongue; 96. Spring seat; 97. Stirring blade; 98. Straight scraper; 99. Arc scraper. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] One embodiment of the present invention is as follows: Please see Figure 1 - Figure 3A raw material conveying device for paint production includes a blower 1, a first air duct 2, a second air duct 3, a spiral conveying pipe 4, and a buffer tank 5. The buffer tank 5 is located between the first air duct 2 and the second air duct 3, and its two ends are configured with variable diameters. The blower 1 is connected to the first air duct 2, and the two ends of the spiral conveying pipe 4 are respectively connected to an upstream storage tank and the first air duct 2. The end of the second air duct 3 furthest from the buffer tank 5 is connected to downstream process equipment. The blower 1 is a Roots blower. After the blower 1 is started, it injects air into the first air duct 2, forming a stable conveying airflow channel through the first air duct 2. The paint raw materials in the storage tank are accurately conveyed to the first air duct 2 through the spiral conveying pipe 4. The pneumatic conveying of the raw materials is achieved by the entrainment force of the airflow. The inner diameter of the buffer tank 5 is larger than the inner diameter of the first air duct 2 and the second air duct 3, providing buffer space for the raw materials. The two ends of the buffer tank 5 are connected to the first air duct 2 and the second air duct 3 through a variable diameter structure. The airflow carries the raw materials through the buffer tank 5 and then through the second air duct 3 into the downstream process equipment.

[0023] Furthermore, please refer to Figure 1 - Figure 9 The buffer tank 5 is equipped with a turbulence-disrupting component 6, which includes a flow-diverting cylinder 61. The flow-diverting cylinder 61 is fixedly connected to the inner wall of the buffer tank 5. Two first through holes are opened at the end of the flow-diverting cylinder 61 away from the first air duct 2 (in conjunction with...). Figure 1 , Figure 4 and Figure 9 A conical disc 64 is rotatably mounted inside the buffer tank 5. The conical disc 64 has four second through holes. The buffer tank 5 is equipped with a drive unit for driving the conical disc 64 to rotate. The second through holes can coincide with the first through holes when the conical disc 64 rotates. Two baffles 62 are fixedly connected to the inner wall of the diverter cylinder 61 (e.g., Figure 9 As shown), a central cylinder 63 is fixedly connected between two partitions 62. The two partitions 62 and the central cylinder 63 divide the inside of the diverter cylinder 61 into upper and lower chambers. The two first through holes of the diverter cylinder 61 are located in the two chambers respectively. The end of the diverter cylinder 61 closest to the first air duct 2 is the inlet, and the two first through holes of the diverter cylinder 61 are the outlets. The end of the diverter cylinder 61 furthest from the first air duct 2 is in sliding contact with the conical disk 64. The conical disk 64 and the contact surfaces between the diverter cylinder 61 and the conical disk 64 are both conical (e.g., ...). Figure 6 As shown), the opening directions of the two first through holes are both inclined and facing the central axis of the conical disk 64 (e.g., Figure 6 As shown), the four second through holes on the conical disk 64 are divided into two pairs. When the driving unit drives the conical disk 64 to rotate, the two pairs of second through holes will alternately coincide with two first through holes (as shown). Figure 5As shown), when the second through hole does not coincide with the first through hole, the outer wall of the conical disk 64 will block the first through hole. At this time, due to the continuous air intake in the buffer tank 5, the air pressure in the internal area of ​​the diverter 61 continues to rise. The raw material entering the buffer tank 5 first enters the diverter 61. Since the heavier particles are located at the bottom and the lighter particles are located at the top during the initial conveying process, the lighter raw material particles enter the chamber above the two partitions 62, and the heavier raw material particles enter the chamber below the two partitions 62. When a pair of second through holes coincide with the first through hole, the airflow channel opens instantly, allowing the high-pressure gas in the two chambers of the diverter 61 to pass through the two first through holes. The two streams of air jets are ejected from the first and second through holes and then converge and collide with the central axis of the conical disk 64. During this process, the two streams of air jets carry the raw material in the diverter 61 through the two first and second through holes, causing the raw material to collide with the two streams of air jets, thereby remixing the raw material. Through the cooperation of the conical disk 64 and the diverter 61, the intermittent pulse jet effect of the air jet is realized, so that the raw material and air entering the buffer tank 5 are first distributed to two chambers and buffered and pressurized, and then divided into two streams of air jets and ejected in a pulse. The two streams of air jets carry the raw material to collide and mix, restoring the uniformity of the raw material, thereby effectively solving the problem of raw material stratification that occurs during long-distance transportation.

[0024] In addition, please see Figure 4 The drive unit includes a gear ring 65, a motor 66, and a drive gear 67. The motor 66 is fixedly mounted on the outer wall of the buffer tank 5, and the drive gear 67 is fixedly connected to the output end of the motor 66. A circular groove is provided at the rotatable connection between the conical disk 64 and the buffer tank 5. The gear ring 65 is fixedly connected in the circular groove of the conical disk 64. A square groove is provided in the area of ​​the buffer tank 5 at the top of the gear ring 65. The drive gear 67 is located in the square groove and meshes with the gear ring 65. After the motor 66 is started, it drives the drive gear 67 to rotate. The drive gear 67 drives the conical disk 64 to rotate through the gear ring 65.

[0025] Based on the above embodiments, another embodiment of the present invention is as follows: Please see Figure 3 , Figure 7 , Figure 8The turbulence assembly 6 also includes a flow guiding mechanism 7, used to uniformly guide the raw material entering the buffer tank 5 into the diversion cylinder 61. The flow guiding mechanism 7 includes a rotating shaft 72, a mounting shaft 76, and a flow guiding cone 77. A connecting frame 71 is fixedly connected to the inner side of the conical disk 64. The rotating shaft 72 is fixedly connected to the center of the connecting frame 71. The mounting shaft 76 is rotatably mounted on the end of the central cylinder 63 away from the connecting frame 71. The flow guiding cone 77 is fixedly connected to the end of the mounting shaft 76 away from the central cylinder 63. Multiple flow guiding plates are provided on the outer wall of the flow guiding cone 77. The flow guiding cone 77 is located at the connection between the buffer tank 5 and the first air duct 2. Between the central cylinder 63 and the diverter cylinder 61, a gear ring 73 and three planetary gears 74 are rotatably connected to the inner wall of the end of the central cylinder 63 away from the connecting frame 71. All three planetary gears 74 mesh with the inner side of the gear ring 73. The gear ring 73 is fixedly connected to the rotating shaft 72. A sun gear 75 is connected to the end of the mounting shaft 76 away from the guide cone 77. The sun gear 75 meshes with the three planetary gears 74. When the conical disk 64 rotates, it drives the rotating shaft 72 to rotate through the connecting frame 71. The rotation of the rotating shaft 72 drives the gear ring 73 to rotate. The gear ring 73, the three planetary gears 74, and the sun gear 75 form an acceleration gear structure (e.g., ...). Figure 8 As shown), when the gear ring 73 rotates, it drives the sun gear 75 to rotate at a speed higher than that of the gear ring 73 through three planetary gears 74. When the sun gear 75 rotates, it drives the guide cone 77 to rotate through the mounting shaft 76. The airflow entering the buffer tank 5 first contacts the guide cone 77, causing the airflow to disperse and flow along the conical outer surface of the guide cone 77. The raw material carried by the airflow also flows along the outer wall of the guide cone 77. The multiple guide vanes on the outer wall of the guide cone 77 are evenly distributed in a circumferential array (e.g., Figure 8 As shown, multiple guide vanes divide the airflow and raw material in contact with the outer wall of the guide cone 77 into multiple parts. When the guide cone 77 rotates, it can drive the airflow and raw material in contact with the guide cone 77 to form a swirling flow through the multiple guide vanes. This allows heavier and lighter raw material particles to be evenly distributed into the two chambers of the distributor cylinder 61 after passing over the surface of the guide cone 77 and generating a swirling flow. This allows heavier and lighter raw material particles to continuously and alternately enter the same chamber, enabling the raw materials to undergo preliminary mixing upon entering the chamber and improving the uniformity of subsequent pulse jet mixing.

[0026] Based on the above embodiments, another embodiment of the present invention is as follows: Please see Figure 3 , Figure 7 , Figure 9A vibration mechanism 8 is provided on the central cylinder 63. The vibration mechanism 8 includes four vibrating rods 82, all of which are fixedly installed on the central cylinder 63. Multiple elastic plates 81 are fixedly connected in a circular array on the outer wall of the rotating shaft 72. One end of the vibrating rod 82 inside the central cylinder 63 is located on the movement trajectory of the elastic plate 81. Multiple fins 83 are fixedly connected to the rod body of the vibrating rod 82 outside the central cylinder 63. Contact between the elastic plates 81 and the vibrating rod 82 can induce vibration of the vibrating rod 82 and the fins 83. The multiple elastic plates 81 are evenly distributed in a circular array on the outer wall of the rotating shaft 72. When the rotating shaft 72 rotates, it drives the multiple elastic plates 81 to rotate. During one rotation, the elastic plates 81 alternately contact the four vibrating rods 82. The elastic plates 81, vibrating rods 82, and fins... All plates 83 are made of elastic material. During the contact between the elastic plate 81 and the vibrating rod 82, the elastic plate 81 and the vibrating rod 82 deform. After the elastic plate 81 separates from the vibrating rod 82, the vibrating rod 82 and the elastic plate 81 reset using their own elastic force, so that the vibrating rod 82 generates elastic vibration during the rebound process. The vibrating rod 82 transmits the elastic vibration to the multiple fins 83 above it. The multiple fins 83 on the four vibrating rods 82 are located in the two chambers of the diverter 61. Therefore, the airflow and raw materials passing through the two chambers will pass around the fins 83. The fins 83 can form turbulence around them through vibration, causing irregular disturbance to the airflow and raw materials passing around them, thereby promoting the collision and mixing between raw material particles and further improving the uniformity of raw material distribution.

[0027] Based on the above embodiments, another embodiment of the present invention is as follows: Please see Figure 3 , Figure 10 - Figure 12 The buffer tank 5 is equipped with a stirring assembly 9 for stirring and mixing the raw material ejected from the second through hole. The stirring assembly 9 includes a wave ring 92, three sleeves 93, and three sliding shafts 94. A connecting arm 91 is fixedly connected to the inner wall of the buffer tank 5. The wave ring 92 is fixedly installed on the connecting arm 91. The connecting frame 71 has three legs. The three sleeves 93 are respectively fixedly installed through the three legs of the connecting frame 71. The three sliding shafts 94 are respectively slidably connected through the three sleeves 93. A stirring blade 97 is installed at one end of the sliding shaft 94, and the other end of the sliding shaft 94 contacts the wave ring 92. An annular inclined groove is opened on the inner wall of the sleeve 93, and a flange is provided on the outer wall of the sliding shaft 94. A sliding tongue 95 is fixedly connected to the flange of the sliding shaft 94 (e.g., Figure 12As shown), the sliding tongue 95 is slidably connected to the annular groove. The inner wall of the sleeve 93 is connected to the spring seat 96 by a spring. The spring seat 96 slides against the flange of the sliding shaft 94. The wave ring 92 has an undulating annular wave surface. The sliding shaft 94 can reciprocate when sliding along the annular wave surface. When the sliding shaft 94 reciprocates, it can rotate reciprocally through the cooperation of the annular groove and the sliding tongue 95. When the connecting frame 71 rotates with the conical disk 64, the connecting frame 71 drives the three sleeves 93 to rotate synchronously. Taking one of the sleeves 93 as an example, when the sleeve 93 revolves, it drives the sliding shaft 94 to revolve accordingly. Since the spring seat 96 always applies a spring force to the sliding shaft 94 towards the wave ring 92, the end of the sliding shaft 94 away from the stirring blade 97 is always in contact with the annular wave surface of the wave ring 92. The wave ring 92 is fixed to the inner wall of the buffer tank 5 by the connecting arm 91 and remains stationary. Therefore, the sliding shaft 94... During the revolution, the sliding shaft 94 is subjected to the counter-thrust force of the undulating annular wave surface of the wave ring 92, causing it to reciprocate within the sleeve 93. When the sliding shaft 94 reciprocates, the sliding tongue 95 generates circumferential displacement under the guidance of the annular inclined groove, thereby driving the sliding shaft 94 to reciprocate. This enables the sliding shaft 94 to perform a composite motion of reciprocating movement and oscillation while revolving, causing the stirring blades 97 at the end of the sliding shaft 94 to form a complex motion trajectory. All three stirring blades 97 are located in the outlet direction of the second through hole of the conical disk 64. The airflow and raw material ejected from the second through hole can contact the three stirring blades 97. The three stirring blades 97 perform multi-directional shearing and mixing of the contacting airflow and raw material through composite motion, so that the raw material and airflow are fully intertwined and mixed. Physical stirring enhances the mixing uniformity between the raw material and airflow, thereby improving the uniformity of raw material conveying.

[0028] It is worth mentioning that you should refer to Figure 3 , Figure 7 , Figure 13 A stabilizing rod 78 is fixedly installed on the inner wall of the buffer tank 5. The end of the rotating shaft 72 furthest from the guide cone 77 is rotatably connected to the stabilizing rod 78. Two straight scraper bars 98 and two arc-shaped scraper bars 99 are fixedly connected to the outer wall of the rotating shaft 72. The two straight scraper bars 98 contact the inner wall of the buffer tank 5, and the two arc-shaped scraper bars 99 contact the inner wall of the buffer tank 5 near the variable diameter area of ​​the second air duct 3. The stabilizing rod 78 provides support and improves the stability of the rotating shaft 72. The two straight scraper bars 98 and the two arc-shaped scraper bars 99 are respectively equipped with... The bracket connected to the rotating shaft 72 drives two straight scraper bars 98 and two arc-shaped scraper bars 99 to rotate as the shaft 72 rotates. The straight scraper bars 98 and arc-shaped scraper bars 99 are located between the outlet diameter change area of ​​the buffer tank 5 and the conical disk 64. When rotating, the straight scraper bars 98 and arc-shaped scraper bars 99 can scrape a small amount of raw material particles deposited on the bottom inner wall of the buffer tank 5 to the top inner wall of the buffer tank 5, so that these raw material particles fall off by gravity and are discharged from the buffer tank 5 with the airflow, thus avoiding the raw material particles remaining in the buffer tank 5.

[0029] Based on the above embodiments, another embodiment of the present invention is as follows: Multiple buffer tanks 5 and their internal turbulence-inducing components 6, flow-guiding mechanisms 7, vibration mechanisms 8, and swirling components 9 can be installed. Workers can install buffer tanks 5 in sections according to the actual length of the conveying path, thereby ensuring that the raw material ratio at the outlet of the conveying pipeline is consistent with that at the inlet. Both ends of the buffer tank 5 are connected to the conveying pipeline through flanges, which facilitates installation and disassembly.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A raw material conveying device for paint production, characterized in that, It includes a fan (1), a first air duct (2), a second air duct (3), a spiral conveying pipe (4), and a buffer tank (5). The buffer tank (5) is located between the first air duct (2) and the second air duct (3), and the two ends of the buffer tank (5) are configured with variable diameters. The buffer tank (5) is provided with a turbulence-disrupting component (6), which includes a diverter cylinder (61). The diverter cylinder (61) is fixedly connected to the inner wall of the buffer tank (5). Two first through holes are opened at the end of the diverter cylinder (61) away from the first air duct (2). A conical disk (64) is rotatably installed inside the buffer tank (5). The conical disk (64) has four second through holes. The buffer tank (5) is provided with a driving part for driving the conical disk (64) to rotate. The second through holes can coincide with the first through holes when the conical disk (64) rotates. Two partitions (62) are fixedly connected to the inner wall of the diverter cylinder (61). A central cylinder (63) is fixedly connected between the two partitions (62). The turbulence assembly (6) further includes a flow guiding mechanism (7) for uniformly guiding the raw material entering the buffer tank (5) into the diverter cylinder (61); the flow guiding mechanism (7) includes a rotating shaft (72), a mounting shaft (76), and a flow guiding cone (77). A connecting frame (71) is fixedly connected to the inner side of the conical disk (64). The rotating shaft (72) is fixedly connected through the center of the connecting frame (71). The mounting shaft (76) is rotatably mounted through the end of the central cylinder (63) away from the connecting frame (71). The flow guiding cone (77) is fixedly connected to the end of the mounting shaft (76) away from the central cylinder (63). The outer wall of the guide cone (77) is provided with multiple guide vanes. The guide cone (77) is located between the connection between the buffer tank (5) and the first air duct (2) and the diverter cylinder (61). The inner wall of the central cylinder (63) away from the connecting frame (71) is rotatably connected with a gear ring (73) and three planetary gears (74). The three planetary gears (74) mesh with the inner side of the gear ring (73). The gear ring (73) is fixedly connected to the rotating shaft (72). The end of the mounting shaft (76) away from the guide cone (77) is connected with a sun gear (75). The sun gear (75) meshes with the three planetary gears (74).

2. The raw material conveying device for paint production according to claim 1, characterized in that: The blower (1) is connected to the first air duct (2), and the two ends of the spiral conveying pipe (4) are connected to the upstream storage tank and the first air duct (2) respectively. The end of the second air duct (3) away from the buffer tank (5) is connected to the downstream process equipment.

3. The raw material conveying device for paint production according to claim 2, characterized in that: The two partitions (62) and the central cylinder (63) divide the flow divider (61) into upper and lower chambers, and the two first through holes of the flow divider (61) are located in the two chambers respectively.

4. The raw material conveying device for paint production according to claim 3, characterized in that: The drive unit includes a gear ring (65), a motor (66), and a drive gear (67). The motor (66) is fixedly installed on the outer wall of the buffer tank (5). The drive gear (67) is fixedly connected to the output end of the motor (66). A circular groove is provided at the rotatable connection between the conical disk (64) and the buffer tank (5). The gear ring (65) is fixedly connected in the circular groove of the conical disk (64). A square groove is provided in the area of ​​the buffer tank (5) at the top of the gear ring (65). The drive gear (67) is located in the square groove and meshes with the gear ring (65).

5. A raw material conveying device for paint production according to claim 1, characterized in that: The central cylinder (63) is provided with a vibration mechanism (8), which includes four vibration rods (82). The four vibration rods (82) are all fixedly installed on the central cylinder (63). The outer wall of the rotating shaft (72) is fixedly connected with multiple elastic plates (81) in a circumferential array. One end of the vibration rod (82) located inside the central cylinder (63) is located on the movement trajectory of the elastic plate (81). The rod body of the vibration rod (82) located outside the central cylinder (63) is fixedly connected with multiple fins (83). The contact between the elastic plate (81) and the vibration rod (82) can cause the vibration rod (82) and the fins (83) to vibrate.

6. The raw material conveying device for paint production according to claim 1, characterized in that: The buffer tank (5) is equipped with a stirring assembly (9) for stirring and mixing the raw material ejected from the second through hole; the stirring assembly (9) includes a wave ring (92), three sleeves (93) and three sliding shafts (94). A connecting arm (91) is fixedly connected to the inner wall of the buffer tank (5). The wave ring (92) is fixedly installed on the connecting arm (91). The connecting frame (71) is provided with three legs. The three sleeves (93) are respectively fixedly installed through the three legs of the connecting frame (71). The three sliding shafts (94) are respectively installed through the three legs of the connecting frame (71). The sliding shaft (94) is slidably connected within three sleeves (93). One end of the sliding shaft (94) is equipped with a stirring blade (97), and the other end of the sliding shaft (94) is in contact with a wave ring (92). The inner wall of the sleeve (93) is provided with an annular inclined groove, and the outer wall of the sliding shaft (94) is provided with a flange. The flange of the sliding shaft (94) is fixedly connected with a sliding tongue (95), and the sliding tongue (95) is slidably connected to the annular inclined groove. The inner wall of the sleeve (93) is connected with a spring seat (96) by a spring, and the spring seat (96) slidably abuts against the flange of the sliding shaft (94).

7. A raw material conveying device for paint production according to claim 6, characterized in that: The waveform ring (92) has an undulating annular wave surface. The sliding shaft (94) can reciprocate when sliding along the annular wave surface. When the sliding shaft (94) reciprocates, it can reciprocate through the cooperation of the annular inclined groove and the sliding tongue (95).

8. A raw material conveying device for paint production according to claim 6, characterized in that: A stabilizing rod (78) is fixedly installed on the inner wall of the buffer tank (5). The end of the rotating shaft (72) away from the guide cone (77) is rotatably connected to the stabilizing rod (78). Two straight scraper rods (98) and two arc-shaped scraper rods (99) are fixedly connected to the outer wall of the rotating shaft (72). The two straight scraper rods (98) are in contact with the inner wall of the buffer tank (5), and the two arc-shaped scraper rods (99) are in contact with the inner wall of the buffer tank (5) near the variable diameter area of ​​the second air duct (3).

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