A spiral feeding device for producing urea for vehicles

Abstract

The application relates to the technical field of spiral feeding devices, and discloses a spiral feeding device for vehicle urea production, which comprises a spiral feeder shell, a feeding pipe is fixedly arranged at the rear upper end of the spiral feeder shell, a discharging pipe is fixedly arranged at the front lower end of the spiral feeder shell, a spiral conveying rod is rotationally arranged on the inner side of the spiral feeder shell, a first motor is fixedly installed at the position corresponding to the rotation shaft of the spiral conveying rod on the front side of the spiral feeder shell, a sliding assembly is arranged on the inner wall of the spiral feeder shell, a positioning assembly is arranged at the middle position of the sliding assembly, and a driving assembly is arranged on the inner walls of the front and rear sides of the spiral feeder shell. The spiral feeding device for vehicle urea production can rotate into the rear through the cooperation of the whole device, and is attached to the surface of the blade at the same time, so that the cleaning and scraping work is realized.

Description

Technical Field

[0001] This invention relates to the field of screw feeding device technology, and in particular to a screw feeding device for automotive urea production. Background Technology

[0002] Screw conveying devices used in automotive urea production typically employ two core types of equipment: tubular screw conveyors and trough screw conveyors. These two types of equipment are adapted to the material conveying needs of different processes in automotive urea production.

[0003] For example, CN113581794B discloses a screw conveyor for preventing powder adhesion, which relates to the field of screw conveyors. It includes a conveying cylinder, a feed hopper, and a drive mechanism. It also includes a conveying rod, multiple helical blades, and multiple cleaning rods. The feed hopper is fixedly located on the upper left side of the conveying cylinder and communicates with it. The conveying rod is horizontally positioned inside the conveying cylinder, with its left end rotatably connected to the left side of the conveying cylinder via a first bearing. The left end of the conveying rod extends to the left side of the conveying cylinder. The drive mechanism is located on the left side of the conveying cylinder and drives the conveying rod to rotate. This invention uses multiple segments for the helical blades and can clean the surfaces of multiple helical blades during material conveying, preventing powder from adhering to the helical blades and affecting powder conveying. It can also clear the powder inside the feed hopper, preventing blockage. Furthermore, it can re-crush the discharged powder, preventing it from being compressed and clumping during re-conveyorment, making it convenient for users.

[0004] In the aforementioned device, a spiral blade pushes a cleaning rod to one side, which then cleans the surface of the spiral blade. A compressed spring and a notch in the spiral blade cause the cleaning rod to spring back after moving a short distance, thus repeating the process. However, this structure can only clean one side of the spiral blade, failing to effectively clean the entire blade, and the notch affects the conveying efficiency. Summary of the Invention

[0005] The main objective of this invention is to provide a screw feeding device for automotive urea production, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A screw feeder for automotive urea production includes a screw feeder housing. A sliding assembly is mounted on the inner wall of the screw feeder housing, and a positioning assembly is located at the center of the sliding assembly. Driving assemblies are mounted on the front and rear inner walls of the screw feeder housing. Each sliding assembly includes sliding rods fixedly mounted on both sides of the inner wall of the screw feeder housing. Sliding sleeves are fitted around the outer sides of both sets of sliding rods. A fixing plate is fixed between the two sets of sliding sleeves. A directional sleeve is fixedly mounted in the center of the fixing plate. A round rod is fixedly mounted on the inner wall of the screw feeder housing below one set of sliding sleeves. A threaded rod is rotatably mounted on the inner side of the screw feeder housing on one side of the round rod. Movable sleeves are fitted around the round rod and the threaded rod. An L-shaped plate is fixedly mounted on the movable sleeve. A second motor is fixedly installed at the rear end of the screw feeder housing corresponding to the threaded rod. Slopes are provided on the lower sides of the front and rear inner walls of the screw feeder housing.

[0008] Preferably, the positioning assembly includes two sets of fixing rings fixedly disposed on the lower side of the steering sleeve. A rotating component is rotatably disposed inside the two sets of fixing rings. A cylinder is fixedly disposed inside one side of the rotating component. Two sets of movable cavities are disposed inside the cylinder. A positioning plug is movably disposed inside each of the two sets of movable cavities. A first spring is fixedly disposed between each of the two sets of positioning plugs and the inner walls of the two sets of movable cavities. A rotating bar is fixedly disposed at both the front and rear ends of the rotating component's rotating shaft. A fixing bar is fixedly disposed at the lower end of the rotating component. Two sets of movable rods are rotatably disposed on the fixing bar. A cleaning rod is fixedly disposed on the outer side of each of the two sets of movable rods. A circular plate is fixedly disposed at the upper end of each of the two sets of movable rods. A torsion spring is sleeved between the circular plate and the fixing bar on the outer side of each of the two sets of movable rods. A fixing shaft is fixedly disposed at both the front and rear ends of the steering sleeve. Two sets of positioning ports are opened on the steering sleeve. A position sensor is fixedly disposed at the middle position of the lower end of the fixing bar.

[0009] Preferably, the drive assembly includes two sets of fixing plates fixedly mounted on the inner walls of the front and rear sides of the screw feeder housing. A first fixing cylinder is fixedly mounted on the fixing plate at a corresponding position of a positioning port on the front side. A telescopic shaft is movably mounted inside the first fixing cylinder. A positioning shaft is fixedly mounted at the rear end of the telescopic shaft. A second spring is fixedly mounted between the telescopic shaft and the inner wall of the first fixing cylinder. A second fixing cylinder is fixedly mounted on the fixing plate at a corresponding position of a rotating bar on the front side. The second fixing cylinder has an oblique sliding opening. Hydraulic cylinders are fixedly mounted on the inner walls of the front and rear sides of the screw feeder housing. Push rods are fixedly mounted on the telescopic rods of the two sets of hydraulic cylinders.

[0010] Preferably, a feed pipe is fixedly installed at the upper rear end of the screw feeder housing, and a discharge pipe is fixedly installed at the lower front end of the screw feeder housing. A screw conveying rod is rotatably installed inside the screw feeder housing. A first motor is fixedly installed on the front side of the screw feeder housing corresponding to the rotation axis of the screw conveying rod. A gap is left between the front and rear ends of the screw blades of the screw conveying rod and the inner wall of the screw feeder housing. The threaded rod is fixedly connected to the rotation axis of the second motor. The movable sleeve is threadedly connected to the threaded rod. The ramp is inclined and its width is just enough to meet the distance between the screw blades of the screw conveying rod and the inner wall of the screw feeder housing.

[0011] Preferably, the front and rear rotating bars of the rotating component are offset by ninety degrees, the upper side of the rotating component is movably disposed in the directional sleeve, and the positioning plug is adapted to the positioning port.

[0012] Preferably, the two sets of cleaning rods are clamped on both sides of the spiral blade of the spiral conveyor rod, the upper and lower ends of the torsion spring are respectively inserted into the disc and the fixing strip, the torsion spring torque is greater than the friction force of the sliding sleeve on the sliding rod, and the positions of the two sets of positioning ports are respectively located inside the front and rear sides of the directional sleeve towards both sides.

[0013] Preferably, the positioning shafts provided on the inner walls of the front and rear sides of the screw feeder housing are respectively fitted with two sets of positioning ports in corresponding directions. The positioning shafts and positioning ports are adapted to each other, and the oblique sliding openings opened on the second fixed cylinders on the inner walls of the front and rear sides of the screw feeder housing are opposite.

[0014] Preferably, the size of the oblique sliding opening is sufficient for the rotating bar to rotate 90 degrees, the push rod is partially inclined, and the push rod is positioned on one side of the fixed shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The first motor drives the screw conveyor to rotate, conveying the urea material entering through the feed pipe to the discharge pipe. When cleaning the blades of the screw conveyor is required, the first motor drives the screw conveyor to rotate, and the rotating blades of the screw conveyor push the two sets of cleaning rods forward. At this time, the sliding sleeve slides on the sliding rod until the front end of the screw conveyor disengages between the two sets of cleaning rods. With the help of the drive assembly, the cleaning rod rotates 90 degrees to the inner position of the L-shaped plate. Then, the second motor drives the threaded rod to rotate, driving the threaded movable sleeve to slide on the round rod to the rear position, realizing the front and rear position movement. Then, the movable sleeve returns to its original position.

[0017] 2. When the directional sleeve and positioning assembly are pushed to the front position, the hydraulic cylinder on the front inner wall drives the push rod to move. The moving push rod pushes the fixed shaft and directional sleeve closer to the front inner wall. The positioning shaft is inserted into the corresponding positioning hole, releasing the positioning plug from restricting the directional sleeve. At the same time, the telescopic shaft is pushed to compress the second spring and retract. Simultaneously, the rotating bar is inserted into the inclined sliding hole. The inclined sliding hole allows the rotating bar and rotating parts to rotate 90 degrees clockwise. One side of the two sets of cleaning rods rotates into the L-shaped plate. With the help of the sliding assembly, the two sets of cleaning rods are moved to the rear position. Similarly, when moved to the rear position, the hydraulic cylinder on the rear side controls the push rod to move, pushing the fixed shaft and directional sleeve closer to the rear inner wall again. The rear positioning shaft releases the restriction of the positioning plug and directional sleeve. The rear rotating bar is inserted into the rear inclined sliding hole, allowing the rotating bar and rotating parts to rotate 90 degrees counterclockwise. This allows the two sets of cleaning rods to become vertical for scraping, thus realizing the 90-degree turning and vertical change operation.

[0018] 3. When the positioning shaft is inserted into the positioning port, the positioning plug slides into the movable cavity to compress the first spring, while the rotating bar contacts the inclined sliding port and rotates 90 degrees. The positioning plug on the rear side is driven to be inserted into another set of positioning ports on the rear side, realizing the positioning of the two sets of cleaning rods after rotation. When the spiral conveyor rod pushes the two sets of cleaning rods forward, the position sensor monitors whether the spiral conveyor rod blades have left the position between the two sets of cleaning rods, and then controls the corresponding hydraulic cylinder to start, realizing the rotation of the two sets of cleaning rods. When the sliding component moves the rear position, the position sensor monitors whether the rear end of the spiral conveyor rod blades blocks the two sets of cleaning rods from rotating down. Then, the hydraulic cylinder, push rod and telescopic shaft push control the middle position of the two sets of cleaning rods to rotate down to the position of the rear end of the spiral conveyor rod blades. When cleaning again, the rear end of the rotating spiral conveyor rod blades inserts between the two sets of cleaning rods. The two sets of cleaning rods, through the use of two sets of movable rods and torsion springs, ensure that the spiral conveyor rod can rotate in after insertion and at the same time adhere to the blade surface to realize the cleaning and scraping work. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall docking structure of a screw feeding device for automotive urea production according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a screw feeding device for automotive urea production according to the present invention;

[0021] Figure 3 This invention relates to a screw feeding device for automotive urea production. Figure 2 Enlarged structural diagram of section A in the middle;

[0022] Figure 4This is a schematic diagram of the screw feeder housing and screw conveyor rod structure of a screw feeding device for automotive urea production according to the present invention;

[0023] Figure 5 This is a partial structural diagram of the positioning component, driving component, and sliding component of a screw feeding device for automotive urea production according to the present invention.

[0024] Figure 6 This is a partial structural diagram of the positioning component and the drive component of a screw feeding device for automotive urea production according to the present invention;

[0025] Figure 7 This is a partial unfolded structural diagram of the positioning component of a spiral feeding device for automotive urea production according to the present invention;

[0026] Figure 8 This is a partial cross-sectional view of the positioning component of a spiral feeding device for automotive urea production according to the present invention.

[0027] Figure 9 This is a schematic diagram of the folding and rearward movement structure of a spiral feeding device for automotive urea production according to the present invention.

[0028] In the diagram: 1. Screw feeder housing; 2. Feed pipe; 3. Discharge pipe; 4. Screw conveyor rod; 5. First motor; 6. Sliding assembly; 61. Slide rod; 62. Sliding sleeve; 63. Fixed plate; 64. Directional sleeve; 65. Round rod; 66. Threaded rod; 67. Movable sleeve; 68. L-shaped plate; 69. Second motor; 610. Inclined ramp; 7. Positioning assembly; 71. Fixed ring; 72. Rotating component; 73. Cylinder; 74. Movable cavity; 75. Fixed... 76. Position plug; 77. First spring; 78. Rotating bar; 79. Fixed bar; 710. Movable rod; 711. Cleaning rod; 712. Circular plate; 713. Torsion spring; 714. Fixed shaft; 715. Positioning port; 8. Drive assembly; 81. Fixed plate; 82. First fixed cylinder; 83. Telescopic shaft; 84. Positioning shaft; 85. Second spring; 86. Second fixed cylinder; 87. Slanted slide; 88. Hydraulic cylinder; 89. Push rod. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship as a relative relationship of orientation or position, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] Please see Figures 1-9 An embodiment of the present invention provides a screw feeding device for automotive urea production, comprising a screw feeder housing 1, a sliding assembly 6 disposed on the inner wall of the screw feeder housing 1, a positioning assembly 7 disposed at the middle position of the sliding assembly 6, and driving assemblies 8 disposed on the front and rear inner walls of the screw feeder housing 1. The sliding assembly 6 includes sliding rods 61 fixedly disposed on the inner walls of both sides of the screw feeder housing 1, with sliding sleeves 62 sleeved on the outer sides of the two sets of sliding rods 61, and a fixing plate 63 fixedly disposed between the two sets of sliding sleeves 62. A directional sleeve 64 is fixedly installed in the middle of plate 63. A round rod 65 is fixedly installed on the inner wall of the screw feeder housing 1 below a set of sliding sleeves 62. A threaded rod 66 is rotatably installed on the inner side of the screw feeder housing 1 on one side of the round rod 65. A movable sleeve 67 is fitted on the outer side of the round rod 65 and the threaded rod 66. An L-shaped plate 68 is fixedly installed on the movable sleeve 67. A second motor 69 is fixedly installed at the rear end of the screw feeder housing 1 corresponding to the position of the threaded rod 66. A ramp 610 is provided on the lower side of the inner wall of both the front and rear sides of the screw feeder housing 1.

[0032] A feed pipe 2 is fixedly installed at the upper rear end of the screw feeder housing 1, and a discharge pipe 3 is fixedly installed at the lower front end of the screw feeder housing 1. A screw conveyor rod 4 is rotatably installed inside the screw feeder housing 1. A first motor 5 is fixedly installed at the front of the screw feeder housing 1 corresponding to the rotation shaft position of the screw conveyor rod 4. A gap is left between the front and rear ends of the screw blades of the screw conveyor rod 4 and the inner wall of the screw feeder housing 1. A threaded rod 66 is fixedly connected to the rotation shaft of the second motor 69. A movable sleeve 67 is threadedly connected to the threaded rod 66. A ramp 610 is inclined and its width is just enough to meet the distance between the screw blades of the screw conveyor rod 4 and the inner wall of the screw feeder housing 1.

[0033] The first motor 5 drives the screw conveyor 4 to rotate, conveying the urea material entering through the feed pipe 2 to the discharge pipe 3. When cleaning is required, the first motor 5 drives the screw conveyor 4 to rotate, and the rotating blades of the screw conveyor 4 push the two sets of cleaning rods 710 forward. At this time, the sliding sleeve 62 slides on the sliding rod 61 until the front end of the screw conveyor 4 disengages between the two sets of cleaning rods 710. With the help of the drive assembly 8, the cleaning rod 710 rotates 90 degrees to the inner position of the L-shaped plate 68. Then, the second motor 69 drives the threaded rod 66 to rotate, driving the threaded movable sleeve 67 to slide on the round rod 65 to the rear position, realizing the front and rear position movement. Then, the movable sleeve 67 returns to its original position.

[0034] The positioning assembly 7 includes two sets of fixing rings 71 fixedly disposed on the lower side of the direction sleeve 64. A rotating component 72 is rotatably disposed inside the two sets of fixing rings 71. A cylinder 73 is fixedly disposed inside one side of the rotating component 72. Two sets of movable cavities 74 are disposed inside the cylinder 73. A positioning plug 75 is movably disposed inside each set of movable cavities 74. A first spring 76 is fixedly disposed between the two sets of positioning plugs 75 and the inner walls of the two sets of movable cavities 74. Rotating bars 77 are fixedly disposed at the front and rear ends of the rotating component 72's rotating shaft. The lower end of the rotating component 72 is fixed. A fixed bar 78 is provided, and two sets of movable rods 79 are rotatably mounted on the fixed bar 78. Cleaning rods 710 are fixedly mounted on the outer side of each set of movable rods 79. A circular piece 711 is fixedly mounted on the upper end of each set of movable rods 79. A torsion spring 712 is sleeved on the outer side of each set of movable rods 79 between the circular piece 711 and the fixed bar 78. Fixed shafts 713 are fixedly mounted on the front and rear ends of the directional sleeve 64. Two sets of positioning holes 714 are opened on the directional sleeve 64. A position sensor 715 is fixedly mounted on the lower end of the fixed bar 78 at the middle position.

[0035] The rotating parts 72 are offset by 90 degrees on the front and rear sides of the rotating parts 77. The upper side of the rotating parts 72 is movably set in the directional sleeve 64. The positioning plug 75 is adapted to the positioning port 714. The two sets of cleaning rods 710 are clamped on both sides of the spiral blade of the spiral conveying rod 4. The upper and lower ends of the torsion spring 712 are inserted into the disc 711 and the fixing strip 78 respectively. The torsion of the torsion spring 712 is greater than the friction of the sliding sleeve 62 on the sliding rod 61. The positions of the two sets of positioning ports 714 are located inside the front and rear sides of the directional sleeve 64, close to the sides.

[0036] When the positioning shaft 84 is inserted into the positioning port 714, the positioning plug 75 slides into the movable cavity 74 to compress the first spring 76, while the rotating bar 77 contacts the inclined sliding port 87 and rotates 90 degrees. The rear positioning plug 75 is driven to engage in another set of positioning ports 714 on the rear side, realizing the positioning of the two sets of cleaning rods 710 after rotation. When the spiral conveying rod 4 pushes the two sets of cleaning rods 710 forward, the position sensor 715 monitors whether the blades of the spiral conveying rod 4 have left the position between the two sets of cleaning rods 710, and then controls the corresponding hydraulic cylinder 88 to start, realizing the rotation of the two sets of cleaning rods 710. When the sliding component 6 moves the rear position, Position sensor 715 monitors whether the rear end of the blades of the spiral conveyor 4 obstructs the two sets of cleaning rods 710 from rotating down. Then, the hydraulic cylinder 88, push rod 89 and telescopic shaft 83 push the two sets of cleaning rods 710 to rotate down to the position of the rear end of the blades of the spiral conveyor 4. When cleaning again, the rear end of the blades of the rotating spiral conveyor 4 is inserted between the two sets of cleaning rods 710. The two sets of cleaning rods 710 are twisted after the spiral conveyor 4 is inserted by the use of two sets of movable rods 79 and torsion springs 712, which ensure that the spiral conveyor 4 can rotate in and at the same time adhere to the blade surface to achieve the cleaning and scraping work.

[0037] The drive assembly 8 includes two sets of fixing plates 81 fixedly mounted on the inner walls of the front and rear sides of the screw feeder housing 1. A first fixing cylinder 82 is fixedly mounted on the fixing plate 81 at a position corresponding to a positioning port 714 on the front side of the directional sleeve 64. A telescopic shaft 83 is movably mounted inside the first fixing cylinder 82. A positioning shaft 84 is fixedly mounted at the rear end of the telescopic shaft 83. A second spring 85 is fixedly mounted between the telescopic shaft 83 and the inner wall of the first fixing cylinder 82. A second fixing cylinder 86 is fixedly mounted on the fixing plate 81 at a position corresponding to a rotating bar 77 on the front side. A slanted sliding port 87 is opened on the second fixing cylinder 86. Hydraulic cylinders 88 are fixedly mounted on the inner walls of the front and rear sides of the screw feeder housing 1. Push rods 89 are fixedly mounted on the telescopic rods of the two sets of hydraulic cylinders 88.

[0038] The positioning shafts 84 on the inner walls of the front and rear sides of the screw feeder housing 1 correspond to the positions of the two sets of positioning ports 714 on the direction sleeve 64. The positioning shafts 84 and the positioning ports 714 are adapted to each other. The oblique sliding ports 87 on the second fixed cylinder 86 on the inner walls of the front and rear sides of the screw feeder housing 1 have opposite openings. The size of the oblique sliding ports 87 is sufficient to allow the rotating bar 77 to rotate 90 degrees. The push rod 89 is partially inclined and corresponds to one side of the fixed shaft 713.

[0039] When the steering sleeve 64 and the positioning assembly 7 are pushed to the front position, the hydraulic cylinder 88 on the front inner wall drives the push rod 89 to move. The moving push rod 89 pushes the fixed shaft 713 and the steering sleeve 64 closer to the front inner wall. The positioning shaft 84 is inserted into the corresponding positioning port 714, releasing the positioning plug 75 from restricting the steering sleeve 64. At the same time, the telescopic shaft 83 is pushed to compress the second spring 85 and retract. Simultaneously, the rotating bar 77 is inserted into the inclined sliding port 87. The inclined sliding port 87 allows the rotating bar 77 and the rotating component 72 to rotate 90 degrees clockwise. The two sets of cleaning rods 710... One side rotates into the L-shaped plate 68, and the sliding component 6 moves the two sets of cleaning rods 710 to the rear position after rotation. Similarly, when they are moved to the rear position, the hydraulic cylinder 88 on the rear side controls the push rod 89 to move, and pushes the fixed shaft 713 and the directional sleeve 64 closer to the rear inner wall. The rear positioning shaft 84 releases the restriction of the positioning plug 75 and the directional sleeve 64, and the rear rotating bar 77 is inserted into the rear inclined sliding port 87, so that the rotating bar 77 and the rotating part 72 rotate counterclockwise by ninety degrees, which can make the two sets of cleaning rods 710 become vertical for scraping, thereby realizing the ninety-degree turning and vertical change operation.

[0040] Working principle: During use, the first motor 5 drives the screw conveyor 4 to rotate, conveying the urea material entering through the feed pipe 2 to the discharge pipe 3. When cleaning the blades of the screw conveyor 4 is required, the first motor 5 drives the screw conveyor 4 to rotate, and the rotating blades of the screw conveyor 4 push the two sets of cleaning rods 710 forward. At this time, the sliding sleeve 62 slides on the sliding rod 61 until the front end of the screw conveyor 4 disengages between the two sets of cleaning rods 710. With the help of the drive assembly 8, the cleaning rod 710 rotates 90 degrees to the inner position of the L-shaped plate 68. Then, the second motor 69 drives the threaded rod 66 to rotate, driving the threaded movable sleeve 67 to slide on the round rod 65 to the rear position, realizing the front and rear position movement. Then, the movable sleeve 67 returns to its original position. Next, when the directional sleeve 64 and the positioning assembly 7 are pushed to the front position, the hydraulic cylinder 88 on the front inner wall drives the push rod 89 to move. The moving push rod 89 pushes the fixed shaft 713 and... The directional sleeve 64 moves towards the inner wall on the front side, and the positioning shaft 84 is inserted into the corresponding positioning port 714, releasing the restriction of the positioning plug 75 on the directional sleeve 64. At the same time, the telescopic shaft 83 is pushed to compress the second spring 85 and retract. Simultaneously, the rotating bar 77 is inserted into the inclined sliding port 87. The inclined sliding port 87 allows the rotating bar 77 and the rotating component 72 to rotate 90 degrees clockwise. One side of the two sets of cleaning rods 710 rotates into the L-shaped plate 68, cooperating with the sliding component 6 to rotate the two sets of cleaning rods 710. When moved to the rear position, the hydraulic cylinder 88 on the rear side controls the push rod 89 to move, pushing the fixed shaft 713 and the directional sleeve 64 closer to the rear inner wall. The rear positioning shaft 84 releases the restriction of the positioning plug 75 and the directional sleeve 64, and the rear rotating bar 77 is inserted into the rear inclined sliding port 87, so that the rotating bar 77 and the rotating part 72 rotate counterclockwise by ninety degrees, which can make the two sets of cleaning rods 710 become vertical for scraping, thereby realizing the ninety-degree turning and vertical change work;Additionally, when the positioning shaft 84 is inserted into the positioning port 714, the positioning plug 75 slides into the movable cavity 74 to compress the first spring 76, while the rotating bar 77 contacts the inclined sliding port 87 and rotates 90 degrees. The rear positioning plug 75 is driven to engage in another set of positioning ports 714 on the rear side, achieving positioning of the two sets of cleaning rods 710 after rotation. When the spiral conveying rod 4 pushes the two sets of cleaning rods 710 forward, the position sensor 715 monitors whether the blades of the spiral conveying rod 4 have left the position between the two sets of cleaning rods 710, and then controls the corresponding hydraulic cylinder 88 to start, realizing the rotation of the two sets of cleaning rods 710. When the sliding component 6 moves the rear position... The position sensor 715 monitors whether the rear end of the blades of the spiral conveyor 4 obstructs the downward rotation of the two sets of cleaning rods 710. Then, the hydraulic cylinder 88, push rod 89, and telescopic shaft 83 push the two sets of cleaning rods 710 to rotate down to correspond to the rear end position of the blades of the spiral conveyor 4. During the next cleaning cycle, the rear end of the rotating blades of the spiral conveyor 4 inserts between the two sets of cleaning rods 710. Through the use of two sets of movable rods 79 and torsion springs 712, the two sets of cleaning rods 710, with their torsion after the spiral conveyor 4 is inserted, ensure that the spiral conveyor 4 can rotate in and simultaneously adhere to the blade surface, thus achieving the cleaning and scraping operation.

[0041] The electrical connections and coordination control between the first motor 5, the second motor 69, the position sensor 715, and the hydraulic cylinder 88 in this invention are common knowledge in the field. Their working principles are well-known technologies, and the appropriate model is selected according to actual use, so they will not be explained in detail.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spiral feeding device for producing vehicle urea, comprising a spiral feeder shell (1), characterized in that: A sliding assembly (6) is provided on the inner wall of the screw feeder housing (1). A positioning assembly (7) is provided in the middle of the sliding assembly (6). A driving assembly (8) is provided on the inner walls of the front and rear sides of the screw feeder housing (1). The sliding assembly (6) includes a slide rod (61) fixedly installed on the inner walls of both sides of the screw feeder housing (1). Slide sleeves (62) are fitted on the outer sides of both sets of slide rods (61). A fixing plate (63) is fixedly installed between the two sets of slide sleeves (62). A directional sleeve (64) is fixedly installed in the middle of the fixing plate (63). A round rod (65) is fixedly installed on the inner wall of the screw feeder housing (1) at the position below a set of sliding sleeves (62). A threaded rod (66) is rotatably installed on the inner side of the screw feeder housing (1) at the position on one side of the round rod (65). A movable sleeve (67) is fitted on the outer side of the round rod (65) and the threaded rod (66). An L-shaped plate (68) is fixedly installed on the movable sleeve (67). A second motor (69) is fixedly installed at the rear end of the screw feeder housing (1) at the position corresponding to the threaded rod (66). A ramp (610) is provided on the lower side of the inner wall of the front and rear sides of the screw feeder housing (1). The positioning component (7) includes two sets of fixing rings (71) fixedly disposed on the lower side of the direction sleeve (64). A rotating component (72) is rotatably disposed inside the two sets of fixing rings (71). A cylinder (73) is fixedly disposed inside one side of the rotating component (72). Two sets of movable cavities (74) are disposed inside the cylinder (73). A positioning plug (75) is movably disposed inside each of the two sets of movable cavities (74). A first spring (76) is fixedly disposed between each of the two sets of positioning plugs (75) and the inner wall of each of the two sets of movable cavities (74). A rotating bar (77) is fixedly disposed at both the front and rear ends of the rotating shaft of the rotating component (72). The lower end of the rotating component (72) is fixedly disposed on... A fixed strip (78) is fixedly provided, and two sets of movable rods (79) are rotatably provided on the fixed strip (78). A cleaning rod (710) is fixedly provided on the outer side of each set of movable rods (79). A circular piece (711) is fixedly provided on the upper end of each set of movable rods (79). A torsion spring (712) is sleeved on the outer side of each set of movable rods (79) between the circular piece (711) and the fixed strip (78). A fixed shaft (713) is fixedly provided at the front and rear ends of the directional sleeve (64). Two sets of positioning holes (714) are provided on the directional sleeve (64). A position sensor (715) is fixedly provided at the middle position of the lower end of the fixed strip (78). The drive assembly (8) includes two sets of fixing plates (81) fixedly installed on the inner walls of the front and rear sides of the screw feeder housing (1). A first fixing cylinder (82) is fixedly installed on the fixing plate (81) at the position of a positioning port (714) on the front side of the direction sleeve (64). A telescopic shaft (83) is movably installed inside the first fixing cylinder (82). A positioning shaft (84) is fixedly installed at the rear end of the telescopic shaft (83). A second spring (85) is fixedly installed between the telescopic shaft (83) and the inner wall of the first fixing cylinder (82). A second fixing cylinder (86) is fixedly installed on the fixing plate (81) at the position of a rotating bar (77) on the front side. An oblique sliding port (87) is opened on the second fixing cylinder (86). Hydraulic cylinders (88) are fixedly installed on the inner walls of the front and rear sides of the screw feeder housing (1). Push rods (89) are fixedly installed on the telescopic rods of the two sets of hydraulic cylinders (88).

2. The spiral feeding device for producing urea for vehicles according to claim 1, characterized in that: A feed pipe (2) is fixedly installed on the upper rear side of the screw feeder housing (1), and a discharge pipe (3) is fixedly installed on the lower front side of the screw feeder housing (1). A screw conveyor rod (4) is rotatably installed on the inner side of the screw feeder housing (1). A first motor (5) is fixedly installed on the front side of the screw feeder housing (1) corresponding to the rotation shaft position of the screw conveyor rod (4). A gap is left between the front and rear ends of the screw blades of the screw conveyor rod (4) and the inner wall of the screw feeder housing (1). The threaded rod (66) is fixedly connected to the rotation shaft of the second motor (69). The movable sleeve (67) is threadedly connected to the threaded rod (66). The ramp (610) is inclined and its width is just enough to meet the distance between the screw blades of the screw conveyor rod (4) and the inner wall of the screw feeder housing (1).

3. The spiral feeding device for producing urea for vehicles according to claim 1, characterized in that: The rotating parts (72) have rotating bars (77) on the front and rear sides that are offset by ninety degrees. The upper side of the rotating parts (72) is movably disposed in the direction sleeve (64). The positioning plug (75) is adapted to the positioning port (714).

4. The spiral feeding device for producing urea for vehicles according to claim 1, characterized in that: The two sets of cleaning rods (710) are clamped on both sides of the spiral blade of the spiral conveying rod (4). The upper and lower ends of the torsion spring (712) are inserted into the disc (711) and the fixing strip (78) respectively. The torsion of the torsion spring (712) is greater than the friction of the sliding sleeve (62) on the sliding rod (61). The positions of the two sets of positioning ports (714) are located inside the front and rear sides of the directional sleeve (64) towards both sides.

5. A screw feeder for automotive urea production according to claim 1, characterized in that: The positioning shafts (84) provided on the inner walls of the front and rear sides of the screw feeder housing (1) correspond to the positions of the two sets of positioning ports (714) on the direction sleeve (64). The positioning shafts (84) and the positioning ports (714) are adapted to each other. The oblique sliding ports (87) opened on the second fixed cylinder (86) at the inner walls of the front and rear sides of the screw feeder housing (1) have opposite openings.

6. The spiral feeding device for producing urea for vehicles according to claim 1, characterized in that: The opening size of the inclined slide (87) is sufficient for the rotating bar (77) to rotate 90 degrees. The push rod (89) is partially inclined and the push rod (89) corresponds to one side of the fixed shaft (713).

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