Spiral feeding device for producing adblue

Abstract

The invention relates to the technical field of spiral feeding devices, and discloses a spiral feeding device for producing adblue, which comprises a spiral feeder shell, a feeding pipe is fixedly arranged at the upper end of the rear side of the spiral feeder shell, and a discharging pipe is fixedly arranged at the lower end of the front side 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 a rotating shaft of the spiral conveying rod, of the front side of the spiral feeder shell, a sliding assembly is arranged on the inner wall of the spiral feeder shell, and a positioning assembly is arranged in the middle of the sliding assembly. Driving assemblies are arranged on the inner walls of the front side and the rear side of the spiral feeder shell correspondingly. According to the spiral feeding device for producing the adblue, through overall cooperative use, it is guaranteed that the spiral conveying rod can be attached to the surface of a blade at the same time after entering the spiral conveying rod in a rotating mode, and cleaning and scraping work is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spiral feeding devices, in particular to a spiral feeding device for vehicle urea production. BACKGROUND

[0002] The spiral feeding device for vehicle urea production usually adopts two types of core equipment, namely tubular screw conveyors and trough screw conveyors, which adapt to the material conveying requirements of different processes of vehicle urea production.

[0003] A spiral conveyor for preventing powder adhesion, with publication number CN113581794B, relates to the field of spiral conveyors, and includes a conveying cylinder, a feed hopper, a driving mechanism, a conveying rod, multiple spiral blades, and multiple cleaning rods. The feed hopper is fixedly arranged on the left side of the upper end of the conveying cylinder and is in communication with the conveying cylinder. The conveying rod is horizontally arranged inside the conveying cylinder, and the left end of the conveying rod is rotatably connected to the left side of the conveying cylinder through a first bearing. The driving mechanism is arranged on the left side of the conveying cylinder and drives the conveying rod to rotate. The spiral blades are arranged in multiple sections, and the surfaces of the multiple spiral blades can be cleaned during material conveying to prevent powder from adhering to the spiral blades and affecting powder conveying. The powder inside the feed hopper can be dredged to prevent clogging, and the discharged powder can be further crushed to prevent clumping during re-conveying, facilitating use.

[0004] In the above device, the spiral blades push the cleaning rods to move to one side, clean the surface of the spiral blades, and then move back after moving a local distance, thereby reciprocating. However, this structure can only clean one side of the spiral blades, cannot effectively clean the spiral blades in a comprehensive manner, and the openings affect the conveying effect. SUMMARY

[0005] The main purpose of the present application is to provide a spiral feeding device for vehicle urea production, which can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: The utility model provides a spiral feeding device for vehicle urea production, including spiral feeder shell, the inner wall of spiral feeder shell is provided with sliding assembly, the middle position of sliding assembly is provided with positioning assembly, the inner wall of spiral feeder shell front and back side is all provided with drive assembly, sliding assembly includes the slide bar that is fixedly arranged in the inner wall of spiral feeder shell both sides, the outer side of two groups slide rod is all sheathed and is fixedly arranged with the fixed plate between two groups slide sleeve, the middle position of fixed plate is fixedly arranged with direction sleeve, the lower side position of one group slide sleeve on the inner wall of spiral feeder shell is fixedly arranged with round rod, the one side position of round rod and screw rod inside is rotatably arranged with movable sleeve, the movable sleeve is fixedly arranged with L type board, the rear end of spiral feeder shell is fixedly installed with second motor in the position of screw rod, the inner wall of spiral feeder shell front and back side lower side is all provided with slope.

[0007] Preferably, the positioning assembly includes two groups of fixed rings fixedly arranged on the lower side of the direction sleeve, two groups of rotating members are rotatably arranged on the inner side of the fixed rings, a cylinder is fixedly arranged on one side of the inner part of the rotating member, two groups of movable cavities are arranged on the inner side of the cylinder, two groups of positioning plugs are movably arranged on the inner side of the two groups of movable cavities, a first spring is fixedly arranged between the inner wall of the two groups of movable cavities and the two groups of positioning plugs, rotating bars are fixedly arranged on the front and rear ends of the rotating shaft of the rotating member, a fixed bar is fixedly arranged on the lower end of the rotating member, two groups of movable rods are rotatably arranged on the fixed bar, cleaning rods are fixedly arranged on the outer side of the two groups of movable rods, circular pieces are fixedly arranged on the upper end of the two groups of movable rods, torsional springs are sleeved on the outer side of the two groups of movable rods between the circular pieces and the fixed bar, fixed shafts are fixedly arranged on the front and rear ends of the direction sleeve, two groups of positioning openings are formed on the direction sleeve, a position sensor is fixedly arranged on the lower end of the fixed bar at the middle position.

[0008] Preferably, the drive assembly includes two groups of fixed pieces fixedly arranged on the inner wall of the spiral feeder shell, a first fixed cylinder is fixedly arranged on the fixed piece at a position corresponding to one group of positioning openings on the front side of the direction sleeve, a telescopic shaft is movably arranged on the inner side of the first fixed cylinder, a positioning shaft is fixedly arranged on the rear end of the telescopic shaft, a second spring is fixedly arranged between the inner wall of the first fixed cylinder and the telescopic shaft, a second fixed cylinder is fixedly arranged on the fixed piece at a position corresponding to one group of rotating bars on the front side, an inclined sliding opening is formed on the second fixed cylinder, hydraulic cylinders are fixedly arranged on the inner wall of the spiral feeder shell, push rods are fixedly arranged on the telescopic rods of the two groups of hydraulic cylinders.

[0009] Preferably, the rear upper end of the spiral feeder shell is fixedly provided with an inlet pipe, the front lower end of the spiral feeder shell is fixedly provided with an outlet pipe, the inner side of the spiral feeder shell is rotatably provided with a spiral conveying rod, the front side of the spiral feeder shell is fixedly installed with a first motor at the position corresponding to the rotation axis of the spiral conveying rod, the front and rear ends of the spiral blade of the spiral conveying rod are spaced apart from the inner wall of the spiral feeder shell, the threaded rod is fixedly connected with the rotation axis of a second motor, the movable sleeve is threadedly connected with the threaded rod, and the slope is obliquely arranged and has a width just meeting the distance between the spiral blade of the spiral conveying rod and the inner wall of the spiral feeder shell.

[0010] Preferably, the front and rear rotating bars of the rotating member are arranged at a ninety-degree offset, the upper side of the rotating member is movably arranged in the direction sleeve, and the positioning plug is matched with the positioning port.

[0011] Preferably, the two groups of cleaning rods are clamped on both sides of the spiral blade of the spiral conveying rod, the upper and lower ends of the torsional spring are respectively inserted into the inner part of the disc and the fixed bar, the torsional force of the torsional spring is greater than the friction force of the sliding sleeve on the sliding rod, and the positions of the two groups of positioning ports are respectively located in the inner part of the front and rear sides of the direction sleeve and are close to both sides.

[0012] Preferably, the positioning shafts arranged on the inner walls of the front and rear sides of the spiral feeder shell correspond to the positions of the two groups of positioning ports of the direction sleeve, the positioning shafts are matched with the positioning ports, and the oblique sliding ports opened on the second fixed cylinders at the positions of the front and rear sides of the spiral feeder shell are opposite.

[0013] Preferably, the size of the oblique sliding port meets the ninety-degree rotation of the rotating bar, the upper part of the push rod is obliquely arranged, and the push rod corresponds to the position of one side of the fixed shaft.

[0014] Compared with the prior art, the present application has the following beneficial effects: 1. The first motor is used for driving the spiral conveying rod to rotate, so that the urea material entering the inlet pipe is conveyed to the position of the outlet pipe; when the spiral conveying rod blade needs to be cleaned, the first motor is used for driving the spiral conveying rod to rotate, the blade of the spiral conveying rod pushes the two groups of cleaning rods to move to the front side, at this time, the sliding sleeve slides on the sliding rod, until the front end of the spiral conveying rod is separated from the two groups of cleaning rods, the driving assembly is used for making the cleaning rods rotate by ninety degrees to the inner side of the L-shaped plate, the second motor is used for driving the threaded rod to rotate, the movable sleeve threadedly connected with the threaded rod slides on the round rod to the rear side position, the front and rear side positions are moved, and then the movable sleeve returns to the original position.

[0015] 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.

[0016] 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

[0017] 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; 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; 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; Figure 4 This 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; Figure 5This 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. 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; 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; 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. 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.

[0018] 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

[0019] The technical solutions 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.

[0020] 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.

[0021] Please see Figures 1-9An 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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 screw feeder for automotive urea production, comprising a screw feeder housing (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 lower position of a set of sliding sleeves (62). A threaded rod (66) is rotatably installed on the inner side of the screw feeder housing (1) at 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).

2. The screw feeding device for automotive urea production according to claim 1, characterized in that: 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 opened 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).

3. The screw feeding device for automotive urea production according to claim 2, characterized in that: 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).

4. The screw feeding device for automotive urea production 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).

5. A screw feeder for automotive urea production according to claim 2, 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).

6. A screw feeder for automotive urea production according to claim 2, 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.

7. A screw feeder for automotive urea production according to claim 3, 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.

8. A screw feeder for automotive urea production according to claim 3, 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).

Images