Quantitative filling device for fireproof paint production

Abstract

The application discloses a quantitative filling device for fireproof paint production, which comprises a supporting frame, a filling assembly and a conveying belt, the filling assembly is arranged on the supporting frame, the filling assembly comprises a cylinder, a movable groove is arranged in the middle of the cylinder, a second piston is slidably arranged in the movable groove, a first piston driven by a first linear driving device is arranged above the movable groove, a third piston is arranged below the second piston, a second material penetrating hole and a third material penetrating hole are respectively arranged on the second piston and the third piston, a discharge port is arranged at the bottom of the cylinder, a one-way feeding pipe is connected to the sidewall of the cylinder above the movable groove, a first return spring is arranged between the third piston and the inner wall of the bottom of the cylinder, a plurality of fan-shaped blades are rotatably connected to the outer periphery of the discharge port, and flexible rods are connected between the plurality of fan-shaped blades and the third piston. The quantitative filling device can effectively avoid the phenomenon of delayed dropping of the paint, and can avoid waste of the paint and influence on the working environment.

Description

Technical Field

[0001] This invention belongs to the technical field of paint filling equipment, and particularly relates to a quantitative filling device for fireproof paint production. Background Technology

[0002] Fire-retardant coatings, also known as flame-retardant coatings, are applied to the surface of materials to improve their fire resistance, slow down the spread of flames, or prevent combustion for a certain period of time. During the production of fire-retardant coatings, they need to be quantitatively filled into storage tanks or barrels for easy transportation, storage, and sales.

[0003] A search revealed Chinese Patent Publication No. CN113896152B, which discloses an automated filling equipment for fire-retardant coating production, comprising a mounting base, a clamping assembly, and an injection assembly. The equipment is characterized by: a clamping assembly mounted on the upper surface of the mounting base, an injection assembly positioned above the clamping assembly, and the injection assembly fixedly mounted on the mounting base; wherein: the clamping assembly includes a primary motor, a drive turntable, an inner clamping support plate, a connecting spring, and a buffer plate; the primary motor is fixedly mounted on the lower surface of the mounting base, and a drive turntable is mounted on the output shaft of the primary motor; the drive turntable is mounted on the upper surface of the mounting base via a rotatable connection.

[0004] The aforementioned patent has the following shortcomings: the end of its injection component cannot be sealed, which leads to a delayed dripping phenomenon after a single filling due to the relatively high viscosity of the coating. The coating will drip onto the storage tank or conveyor belt, causing the storage tank to become dirty and resulting in coating waste, as well as affecting the working environment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a quantitative filling device for fire-retardant coating production. This device can seal the opening after a single filling and draw back the coating from the opening, effectively preventing delayed dripping of the coating, avoiding dirt accumulation in the storage tank and waste of the coating, and also preventing any impact on the working environment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a quantitative filling device for fire-retardant coating production, comprising a support frame, a filling component, and a conveyor belt. The filling component is mounted on the support frame, and the conveyor belt is located below the filling component. The filling component includes a cylinder with a movable groove in the middle. A second piston is slidably mounted in the movable groove. A first piston driven by a first linear drive device is mounted above the movable groove. A third piston is mounted below the second piston. The second and third pistons are respectively provided with staggered second and third material passage holes. A discharge port is provided at the bottom of the cylinder. A one-way feed pipe is connected to the side wall of the cylinder above the movable groove. A first return spring is provided between the third piston and the inner wall of the bottom of the cylinder. A plurality of fan-shaped blades are rotatably connected to the outer circumference of the discharge port. A flexible rod is connected between the plurality of fan-shaped blades and the third piston. When the third piston is pushed to the top by the first return spring, the plurality of fan-shaped blades form a closed circle. This quantitative filling device for fire-retardant coating production uses a first linear drive device to move a first piston up and down to draw in fire-retardant coating for filling. As the first piston moves downward, the pressure between the first and second pistons increases. The third piston moves downward, and the fan-shaped blades rotate to create a discharge gap. The coating is squeezed out through the second and third discharge holes and the gap between the fan-shaped blades. When the first and second pistons contact each other, the second piston moves downward synchronously until it is pushed to the bottom of the movable trough to complete the filling. After filling, the first piston moves upward. During this upward movement, a negative pressure is generated between the first and second pistons, drawing in fire-retardant coating through the one-way feed pipe. The paint is applied, and with the assistance of the first return spring, the second and third pistons move upward synchronously, the gap between the fan-shaped blades gradually closes, and during the closing process, there is an upward suction force, which draws back the fireproof paint remaining in the gap between the fan-shaped blades until the third piston is pushed to the top by the first return spring. At this point, several of the fan-shaped blades form a closed circle, thereby sealing the outlet after a single filling, preventing paint dripping, thus preventing paint waste and pollution of the working environment. Furthermore, the filling is achieved by the movement of the first piston, and the opening and closing of the fan-shaped blades are synchronized with the action of the first piston without the need for additional control, increasing the synchronous linkage of the device.

[0007] In the above technical solution, preferably, an extension groove is provided on the side of the movable groove towards the discharge port. The extension groove is provided for venting and to ensure that the second piston can move smoothly within the movable groove.

[0008] In the above technical solution, preferably, the cylinder and the first linear drive device are fixed on the support frame, and the telescopic end of the first linear drive device passes through the cylinder and is connected to the first piston through a connecting assembly.

[0009] In the above technical solution, preferably, the top of the first piston is provided with an opening, a guide groove is provided in the opening, and a sliding groove is provided on the side of the guide groove. The telescopic end of the first linear drive device extends into the guide groove from the opening. The connecting assembly includes a limiting plate, a sliding plate, and a second return spring. The limiting plate is fixed to the telescopic end of the first linear drive device and slidably disposed in the guide groove. The sliding plate is slidably disposed in the sliding groove. The second return spring is provided between the sliding plate and the bottom of the sliding groove. The sliding plate is provided with an arc-shaped protrusion that can protrude from the sliding groove. During filling, the first linear drive device extends continuously, with the limiting plate positioned above the arc-shaped protrusion. The arc-shaped protrusion provides resistance to the movement of the limiting plate through the elastic force provided by the second return spring. The limiting plate drives the first piston to press down until the first piston pushes the second piston down to the bottom of the movable groove. At this point, the first linear drive device continues to extend, and the limiting plate will pass over the arc-shaped protrusion to the bottom. Afterward, the first linear drive device retracts, driving the first piston to rise until it moves to the top of the cylinder. Then, the first piston is limited by the cylinder, and the limiting plate will again pass over the arc-shaped protrusion to the top. This structure can act as a buffer. When the first linear drive device extends and retracts, and the first piston is limited when it moves to the top or bottom, the limiting plate can buffer by passing over the arc-shaped protrusion, preventing the first linear drive device from being overloaded and burned out.

[0010] In the above technical solution, preferably, the top and bottom of the guide groove are respectively provided with a first electrode plate A and a second electrode plate B, and the top and bottom of the limiting plate are respectively provided with a first electrode plate B and a second electrode plate B. The first linear drive device has two parallel extension circuits and retraction circuits. The first electrode plate A and the first electrode plate B are connected in series to the extension circuit, and the second electrode plate A and the second electrode plate B are connected in series to the retraction circuit. This structure ensures that when the limiting plate is above the arc-shaped protrusion, the first electrode plate A and the first electrode plate B contact each other, automatically activating the extension circuit; when the limiting plate is below the arc-shaped protrusion, the second electrode plate A and the second electrode plate B contact each other, automatically activating the retraction circuit. This achieves automated control of the filling and suction processes while preventing the first linear drive device from overloading and burning out.

[0011] In the above technical solution, preferably, a unidirectional mixing head is eccentrically arranged on the unidirectional feed pipe. The unidirectional mixing head includes a cylindrical shell, with a feed pipe and a discharge pipe connected to the side wall of the cylindrical shell. A rotating shaft is arranged at the center of the cylindrical shell, and the rotating shaft is provided with divergent stirring blades. A ball is arranged between two adjacent stirring blades. The feed pipe is provided with a conical part, the diameter of the small diameter of the conical part being smaller than the diameter of the ball. A mesh plate is provided on the discharge pipe to prevent the ball from entering. With this structure, when the first linear drive device contracts, that is, when the first piston moves upward to feed, the stirring blades and balls in the unidirectional mixing head can stir the coating with the flow of the coating, preventing the coating from clogging and making the components in the coating more uniformly mixed. When the first piston presses down to fill, the ball will roll into the conical part to block it, preventing the coating from flowing back. It can play a role in stirring, mixing and preventing clogging, as well as a role in unidirectional feeding.

[0012] In the above technical solution, preferably, a limiting component is provided on the side of the conveyor belt. The limiting component includes a positioning frame, a second linear drive device, a movable frame, a gear, a baffle, and a rack. The positioning frame is fixed to the side of the conveyor belt, and the second linear drive device with its extension direction perpendicular to the conveying direction of the conveyor belt is provided on the positioning frame. The movable frame is fixed to the extension end of the second linear drive device. The gear is rotatably connected to the movable frame, and the baffle is fixed to the side of the gear. A rack perpendicular to the conveying direction of the conveyor belt is provided below the gear, and the gear meshes with the rack. This limiting component enables the baffle to rotate through the extension and retraction of the second linear drive device. When the second linear drive device extends, the movable frame moves, and the gear and rack on the movable frame rotate, driving the baffle to rotate above the conveyor belt. The baffle blocks and limits the filling container, ensuring that the filling container is in the filling position. After filling is completed, the second linear drive device retracts, and the gear and rack on the movable frame rotate in the opposite direction, driving the baffle to rotate in the opposite direction and leave the blocking position, allowing the filling container to continue to be conveyed by the conveyor belt.

[0013] Compared with the prior art, this invention has the following advantages: This quantitative filling device for fire-retardant coating production uses a first linear drive device to drive a first piston to move up and down to draw in fire-retardant coating for filling. When the first piston moves down, the pressure between the first and second pistons increases. The third piston moves down, and the fan-shaped blades rotate to form a discharge gap. The coating is squeezed out through the second and third discharge holes and the gap between the fan-shaped blades. When the first and second pistons come into contact, the second piston is moved down synchronously until it is pushed to the bottom of the movable groove to complete the filling. After filling is completed, the first piston moves up. During the upward movement, a negative pressure is generated between the first and second pistons. Fire-retardant coating is drawn in through a one-way feed pipe, and with the assistance of a first return spring, the second and third pistons move upward synchronously. The gaps between the fan-shaped blades gradually close, and during the closing process, there is an upward suction force that draws back the fire-retardant coating remaining in the gaps between the fan-shaped blades. When the third piston is pushed to the top by the first return spring, several of the fan-shaped blades form a closed circle, thereby sealing the outlet after a single filling. This prevents coating from dripping, thus preventing coating waste and pollution of the working environment. Furthermore, the filling is achieved by the movement of the first piston, and the opening and closing of the fan-shaped blades are synchronized with the action of the first piston without the need for additional control, increasing the synchronous linkage of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0015] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention.

[0016] Figure 3 This is a cross-sectional view of the location of the movable groove in the cylinder in an embodiment of the present invention.

[0017] Figure 4 This is a partial cross-sectional view of the connection structure between the third piston and the fan-shaped blade in an embodiment of the present invention.

[0018] Figure 5 This is a cross-sectional view of the connection between the first linear drive device and the second piston in an embodiment of the present invention.

[0019] Figure 6 for Figure 5 A magnified view of a portion of the image.

[0020] Figure 7 This is a cross-sectional view of the unidirectional mixing head in an embodiment of the present invention.

[0021] Figure 8 This is a schematic diagram of the limiting component in an embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1 to 8 A quantitative filling device for fire-retardant coating production includes a support frame 1, a filling component 2, and a conveyor belt 3. The support frame 1 is a gantry frame, and the filling component 2 is fixedly installed on the support frame 1. The conveyor belt 3 is located below the filling component 2. The filling component 2 includes a cylinder 21, a movable groove 22 is provided in the middle of the cylinder 21, a second piston 23 is slidably disposed in the movable groove 22, a first piston 25 driven by a first linear drive device 24 is provided above the movable groove 22, and a third piston 26 is provided below the second piston 23. The second piston 23 and the third piston 26 are connected. The cylinder 21 has a second through hole 231 and a third through hole 261 that are staggered. The bottom of the cylinder 21 has a discharge port 27. A one-way feed pipe 4 is connected to the side wall of the cylinder 21 above the movable groove 22. A first return spring 28 is provided between the third piston 26 and the inner wall of the bottom of the cylinder 21. Several fan-shaped blades 29 are rotatably connected to the outer circumference of the discharge port 27. A flexible rod 210 is connected between the several fan-shaped blades 29 and the third piston 26. When the third piston 26 is pushed to the top by the first return spring 28, the several fan-shaped blades 29 form a closed circle. This quantitative filling device for fire-retardant coating production uses a first linear drive device 26 to drive a first piston 25 up and down to draw in fire-retardant coating for filling. When the first piston 25 moves downwards, the pressure between the first piston 25 and the second piston 23 increases. The third piston 26 moves downwards, and the fan-shaped blade 29 rotates to form a discharge gap. The coating is squeezed out through the gap between the second through hole 231, the third through hole 261, and the fan-shaped blade 29. When the first piston 25 contacts the second piston 23, the second piston 23 is moved downwards synchronously until the second piston 23 is pushed to the bottom of the movable groove 22 to complete the filling. After filling, the first piston 25 moves upwards. During this upward movement, a negative pressure is generated between the first piston 25 and the second piston 23, creating a one-way flow. The feed pipe 4 draws in fire-retardant coating, and with the assistance of the first return spring 28, the second piston 23 and the third piston 26 move upward synchronously. The gap between the fan-shaped blades 29 gradually closes, and during the closing process, there is an upward suction force, which draws back the fire-retardant coating remaining in the gap between the fan-shaped blades 29. When the third piston 26 is pushed to the top by the first return spring 28, several of the fan-shaped blades 29 form a closed circle, thereby sealing the outlet 27 after a single filling, which can prevent coating from dripping, thus preventing coating waste and pollution of the working environment. Furthermore, the filling is achieved by the movement of the first piston 25, and the opening and closing of the fan-shaped blades 29 are matched with the action of the first piston 25, without the need for additional control, increasing the synchronous linkage of the device.

[0023] In this embodiment, an extension groove 221 is provided on the side of the movable groove 22 towards the discharge port 27. The extension groove 221 is provided for venting and to ensure that the second piston 23 can move smoothly within the movable groove 22.

[0024] In this embodiment, a cylinder 21 and a first linear drive device 24 are fixed on the support frame 1. The telescopic end of the first linear drive device 24 passes through the cylinder 21 and is connected to the first piston 25 through the connecting assembly 5.

[0025] In this embodiment, the top of the first piston 25 is provided with an opening 251, a guide groove 252 is provided in the opening 251, and a sliding groove 253 is provided on the side of the guide groove 252. The telescopic end of the first linear drive device 24 extends into the guide groove 252 from the opening 251. The connecting component 5 includes a limiting plate 51, a sliding plate 52, and a second return spring 53. The limiting plate 51 is fixed to the telescopic end of the first linear drive device 24 and is slidably disposed in the guide groove 252. The sliding plate 52 is slidably disposed in the sliding groove 253. A second return spring 53 is provided between the sliding plate 52 and the bottom of the sliding groove 253. An arc-shaped protrusion 521 that can protrude from the sliding groove 253 is provided on the sliding plate 52. During filling, the first linear drive device 24 extends continuously, and the limiting plate 51 is located above the arc-shaped protrusion 521. The arc-shaped protrusion 521 provides resistance to the movement of the limiting plate 51 through the elastic force provided by the second return spring 53. The limiting plate 51 drives the first piston 25 to press down until the first piston 25 pushes the second piston 23 down to the bottom of the movable groove 22. Then the first linear drive device 24 continues to extend, and the limiting plate 51 will pass over the arc-shaped protrusion 521 to the bottom. After that, the first linear drive device 24 retracts, driving the first piston 25 to rise until it moves to the top of the cylinder 21. The first piston 25 is then limited by the cylinder 21, and the limiting plate 51 will pass over the arc-shaped protrusion 521 to the top again. This structure can play a buffering role. When the first linear drive device 24 extends and retracts, and the first piston 25 is limited when it moves to the top or bottom, the limiting plate 51 can buffer by passing over the arc-shaped protrusion 521 to prevent the first linear drive device 24 from being overloaded and burned out.

[0026] In this embodiment, the top and bottom of the guide groove 252 are respectively provided with a first electrode plate A54 and a second electrode plate A55, and the top and bottom of the limiting plate 51 are respectively provided with a first electrode plate B56 and a second electrode plate B57. The first linear drive device 24 has two parallel extension circuits and retraction circuits. The first electrode plate A54 and the first electrode plate B56 are connected in series to the extension circuit, and the second electrode plate A55 and the second electrode plate B57 are connected in series to the retraction circuit. With this structure, when the limiting plate 51 is above the arc-shaped protrusion 521, the first electrode plate A54 contacts the first electrode plate B56, automatically connecting the extension circuit. When the limiting plate 51 is below the arc-shaped protrusion 521, the second electrode plate A55 contacts the second electrode plate B57, automatically connecting the retraction circuit. This achieves automated control of the filling and suction processes while preventing the first linear drive device 24 from overloading and burning out.

[0027] In this embodiment, a one-way mixing head 6 is eccentrically arranged on the one-way feed pipe 4. The one-way mixing head 6 includes a cylindrical shell 61. The side wall of the cylindrical shell 61 is connected to the feed pipe 62 and the discharge pipe 63. A rotating shaft 64 is arranged at the center of the cylindrical shell 61. The rotating shaft 64 is provided with divergent stirring blades 65. A ball 66 is arranged between two adjacent stirring blades 65. A conical part 67 is provided on the feed pipe 62. The diameter of the small diameter of the conical part 67 is smaller than the diameter of the ball 66. A mesh plate 68 is provided on the discharge pipe 63 to prevent the ball 66 from entering. When the first linear drive device 24 contracts, i.e. when the first piston 25 moves upward to feed, the stirring blades 65 and the balls 66 in the one-way mixing head 6 can stir the coating as it flows, preventing the coating from clogging and making the components in the coating more evenly mixed. When the first piston 25 presses down to fill, the balls 66 will roll into the conical part 67 to block it, preventing the coating from flowing back. This structure can play both the role of stirring and mixing to prevent clogging and the role of one-way feeding.

[0028] In this embodiment, a limiting component 7 is provided on the side of the conveyor belt 3. The limiting component 7 includes a positioning frame 71, a second linear drive device 72, a movable frame 73, a gear 74, a baffle 75, and a rack 76. The positioning frame 71 is fixed to the side of the conveyor belt 3. The positioning frame 71 is provided with a second linear drive device 72 whose extension direction is perpendicular to the conveying direction of the conveyor belt 3. The movable frame 73 is fixed to the extension end of the second linear drive device 72. The gear 74 is rotatably connected to the movable frame 73. A baffle 75 is fixed on the side of the gear 74. A rack 76 perpendicular to the conveying direction of the conveyor belt 3 is provided below the gear 74. The gear 74 meshes with the rack 76. The limiting component 7 enables the baffle 75 to rotate through the extension and retraction of the second linear drive device 72. When the second linear drive device 72 extends, the movable frame 73 moves, and the gear 74 and rack 76 on the movable frame 73 rotate in coordination, driving the baffle 75 to rotate above the conveyor belt 3. The baffle 75 blocks and limits the filling container, ensuring that the filling container is in the filling position. When the filling is completed, the second linear drive device 72 retracts, and the gear 74 and rack 76 on the movable frame 73 rotate in the opposite direction, driving the baffle 75 to rotate in the opposite direction and leave the blocking position, and the filling container continues to be conveyed by the conveyor belt 3.

[0029] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A quantitative filling device for fire-retardant coating production, comprising a support frame (1), a filling assembly (2), and a conveyor belt (3), wherein the filling assembly (2) is disposed on the support frame (1), and the conveyor belt (3) is located below the filling assembly (2), characterized in that: The filling assembly (2) includes a cylinder (21), a movable groove (22) is provided in the middle of the cylinder (21), a second piston (23) is slidably arranged in the movable groove (22), a first piston (25) driven by a first linear drive device (24) is provided above the movable groove (22), a third piston (26) is provided below the second piston (23), a second material passage hole (231) and a third material passage hole (261) are respectively opened on the second piston (23) and the third piston (26), a discharge port (27) is provided at the bottom of the cylinder (21), a one-way feed pipe (4) is connected to the side wall of the cylinder (21) above the movable groove (22), a first return spring (28) is provided between the third piston (26) and the inner wall of the bottom of the cylinder (21), and a plurality of fan-shaped blades (29) are rotatably connected to the outer periphery of the discharge port (27). 9) A flexible rod (210) is connected to the third piston (26). When the third piston (26) is pushed to the top by the first return spring (28), a number of fan-shaped blades (29) form a closed circle. A one-way mixing head (6) is eccentrically arranged on the one-way feed pipe (4). The one-way mixing head (6) includes a cylindrical shell (61). The side wall of the cylindrical shell (61) is connected to a feed pipe (62) and a discharge pipe (63). A rotating shaft (64) is arranged at the center of the cylindrical shell (61). A divergent stirring blade (65) is provided on the rotating shaft (64). A ball (66) is arranged between two adjacent stirring blades (65). A tapered part (67) is provided on the feed pipe (62). The diameter of the small diameter of the tapered part (67) is smaller than the diameter of the ball (66). A mesh plate (68) for blocking the ball (66) from entering is provided on the discharge pipe (63).

2. The quantitative filling device for fire-retardant coating production as described in claim 1, characterized in that: The movable groove (22) has an extension groove (221) on its side facing the discharge port (27).

3. The quantitative filling device for fire-retardant coating production as described in claim 1, characterized in that: The support frame (1) is fixed with the cylinder (21) and the first linear drive device (24). The telescopic end of the first linear drive device (24) passes through the cylinder (21) and is connected to the first piston (25) through the connecting assembly (5).

4. The quantitative filling device for fire-retardant coating production as described in claim 3, characterized in that: The first piston (25) has an opening (251) at the top, a guide groove (252) is provided in the opening (251), and a sliding groove (253) is provided on the side of the guide groove (252). The telescopic end of the first linear drive device (24) extends into the guide groove (252) from the opening (251). The connecting assembly (5) includes a limiting plate (51), a sliding plate (52) and a second return spring (53). The limiting plate (51) is fixed to the telescopic end of the first linear drive device (24) and is slidably disposed in the guide groove (252). The sliding plate (52) is slidably disposed in the sliding groove (253). The second return spring (53) is provided between the sliding plate (52) and the bottom of the sliding groove (253). The sliding plate (52) is provided with an arc-shaped protrusion (521) that can protrude from the sliding groove (253).

5. The quantitative filling device for fire-retardant coating production as described in claim 4, characterized in that: The top and bottom of the guide groove (252) are respectively provided with a first electrode plate A (54) and a second electrode plate A (55), and the top and bottom of the limiting plate (51) are respectively provided with a first electrode plate B (56) and a second electrode plate B (57). The first linear drive device (24) has two parallel extension circuits and retraction circuits. The first electrode plate A (54) and the first electrode plate B (56) are connected in series to the extension circuit, and the second electrode plate A (55) and the second electrode plate B (57) are connected in series to the retraction circuit.

6. The quantitative filling device for fire-retardant coating production as described in claim 1, characterized in that: The conveyor belt (3) is provided with a limiting component (7) on its side. The limiting component (7) includes a positioning frame (71), a second linear drive device (72), a movable frame (73), a gear (74), a baffle (75), and a rack (76). The positioning frame (71) is fixed to the side of the conveyor belt (3). The positioning frame (71) is provided with a second linear drive device (72) whose extension direction is perpendicular to the conveying direction of the conveyor belt (3). The movable frame (73) is fixed to the extension end of the second linear drive device (72). The gear (74) is rotatably connected to the movable frame (73). The baffle (75) is fixed to the side of the gear (74). A rack (76) perpendicular to the conveying direction of the conveyor belt (3) is provided below the gear (74). The gear (74) meshes with the rack (76).

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