Screen device of vertical rice mill

Abstract

The invention discloses a screen device of a vertical rice mill, which comprises two half frames and two screen frames, and the two half frames are fastened and fixed together to form a cylindrical frame structure. An upper frame edge body and a lower frame edge body of each half frame are provided with an upper connecting assembly and a lower connecting assembly correspondingly and used for being detachably connected with a screen mesh frame, the screen mesh frame is provided with a half screen mesh matched with the screen mesh frame, and the upper connecting assembly comprises a plurality of plug pins. Blind holes with the same number as the plug pins are formed in the lower end of the upper frame edge body of the half frame, the plug pins and springs are arranged in the blind holes in a penetrating mode, the springs are arranged between the plug pins and the blind ends of the blind holes, and long slotted holes which are in one-to-one correspondence with the blind holes and are communicated with the blind holes are formed in the outer side of the upper frame edge body of the half frame. And sliding rods fixedly connected with the plug pins are arranged in the long slotted holes in a penetrating mode, connecting rods are arranged on the sliding rods, and compared with the prior art, time can be saved, and the manual workload can be reduced.

Description

Technical Field

[0001] This invention relates to the technical field of vertical rice milling machines, and in particular to the technical field of a screen device for a vertical rice milling machine. Background Technology

[0002] The working principle of a vertical rice mill is as follows: Brown rice, processed by a rice huller, is pushed into the bottom of the milling chamber by the feeding device of the vertical rice mill and conveyed between the milling roller assembly and the screen assembly. As the power unit drives the milling roller assembly to rotate, the brown rice moves upward in a spiral shape along the surface of the milling roller assembly (the surface of the milling roller assembly has a spiral channel). Friction occurs between the milling roller assembly and the brown rice, between the screen assembly and the brown rice, and between the brown rice grains, which makes the brown rice white and discharged from the rice outlet pipe. At the same time, the airflow generated by the fan blows from top to bottom into the hollow shaft linked to the power unit (the milling roller assembly is installed on the hollow shaft), flows along the hollow shaft, the milling roller assembly, and the screen assembly, cools the brown rice and blows out the bran. In conjunction with the external bran suction device connected to the bran suction pipe of the vertical rice mill, the bran powder is quickly discharged from the screen holes of the screen assembly and sucked away by the external bran suction device.

[0003] A vertical rice milling machine with application (patent) number CN202510138215.8 is described. The disassembly and cleaning process involves removing the maintenance door, which triggers a linkage component to activate a limiting component, allowing the rotating seat to rotate. The connecting parts between the left and right brackets are then removed. When the right bracket rotates to the position corresponding to the maintenance door, it is disassembled, allowing the assembly of the right bracket and multiple right screens to be removed from the maintenance door. Similarly, when the left bracket rotates to the position corresponding to the maintenance door, it is disassembled, allowing the assembly of the left bracket and multiple left screens to be removed from the maintenance door for cleaning. The connecting parts consist of multiple bolts and nuts positioned between the left and right brackets. During disassembly and cleaning, multiple connecting parts need to be manually disassembled, wasting time and increasing manual labor. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and to propose a screen device for a vertical rice milling machine that can save time and reduce manual labor.

[0005] To achieve the above objectives, this invention proposes a screen device for a vertical rice milling machine, comprising two half-frames and two screen frames. The two half-frames are fastened together to form a cylindrical frame structure. Each half-frame has an upper connecting component and a lower connecting component on its upper and lower sides for detachable connection with a screen frame. Each screen frame has a matching half-screen. The upper connecting component includes several pins. The lower end of the upper side of the half-frame has blind holes equal in number to the number of pins. Each blind hole contains a pin and a spring. A spring is provided between the pin and the blind end of the blind hole. The outer side of the upper side of the half-frame has elongated slots corresponding to and communicating with the blind holes. Each elongated slot contains a sliding rod fixedly connected to a pin. The sliding rod has a connecting rod. The screen frame has slots corresponding to and cooperating with the pins.

[0006] Preferably, the lower end of the pin is in the shape of an inverted frustum.

[0007] Preferably, the screen frame is provided with a plurality of screen supports spaced apart from top to bottom, and the screen supports are matched with the arc-shaped surface of half of the screen.

[0008] Preferably, both ends of the half-screen are provided with connecting skirts, which are respectively attached to the front and rear end faces of the screen frame. Both the front and rear ends of the screen frame are provided with positioning plugs that pass through the connecting skirts, and both the front and rear sides of the half-frame are provided with positioning grooves that cooperate with the positioning plugs.

[0009] Preferably, a fixing pin is provided on the connecting rod, a handle is provided at the outer end of the fixing pin, a stop is provided on the fixing pin, a compression spring is sleeved on the fixing pin between the stop and the inner side of the connecting rod, and a fixing groove is provided on the half frame for the fixing pin to be inserted.

[0010] Preferably, the device also includes a screen cleaning device, which comprises an annular seat, an annular groove, an annular cover, an air blowing pipe, several air blowing nozzles, a rotary drive mechanism, and an air inlet. The annular seat has an annular groove at its upper end, and an annular cover rotatably provides a seal to close the opening of the annular groove. The annular cover has an air blowing pipe communicating with the annular groove, and the air blowing pipe has air blowing nozzles. The annular seat has an air inlet communicating with the annular groove. The rotary drive mechanism drives the annular cover to rotate, and the annular cover drives the air blowing pipe to rotate around a cylindrical frame.

[0011] Preferably, the annular cover is provided with a plurality of guide wheels located inside the annular seat, and the inner side of the annular seat is provided with guide rails that cooperate with the guide wheels.

[0012] Preferably, the rotary drive mechanism includes a drive motor, a drive gear, and a ring gear. The drive gear is provided on the rotating shaft of the drive motor, and the drive gear meshes with the ring gear provided on the outer side of the ring cover.

[0013] Preferably, the annular cover is provided with two annular sealing bodies located within an annular groove. Each annular sealing body is provided with a sealing ring. The annular groove is provided with an annular sealing groove that corresponds to and cooperates with the sealing ring. The lower outer side of each annular sealing body is provided with an annular receiving groove that cooperates with the sealing ring. The inner diameter of the annular receiving groove is larger than the inner diameter of the sealing ring.

[0014] Preferably, the air nozzle includes a connecting tube, the rear end of which is integrally formed with a flat air outlet. The connection between the flat air outlet and the connecting tube is a rearward convex arc shape. The connecting tube is provided with a screwing protrusion, the cross-section of which is a regular polygon. The front end of the connecting tube is provided with a threaded section that is threaded to the air blowing tube. The width of the flat air outlet gradually increases from front to back, and the internal height of the flat air outlet gradually decreases from front to back.

[0015] The beneficial effects of this invention are as follows: The lower end of the upper frame of the half-frame is provided with blind holes equal in number to the number of pins. Each blind hole contains a pin and a spring, and a spring is provided between the pin and the blind end of the blind hole. The outer side of the upper frame of the half-frame has elongated slots corresponding to and communicating with the blind holes. Each elongated slot contains a sliding rod fixedly connected to the pin, and a connecting rod is provided on the sliding rod. The screen frame has slots corresponding to and cooperating with the pins. The screen frame can be disassembled by removing the pins from the slots. Compared with the prior art, this invention saves time and reduces manual labor.

[0016] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a screen device for a vertical rice milling machine according to the present invention; Figure 2 yes Figure 1 Enlarged view of A in the middle; Figure 3 yes Figure 2 Partial top view; Figure 4 This is a top view of the half-frame and screen frame installation; Figure 5 This is a schematic diagram of half of the screen being installed on the screen frame; Figure 6 It is a three-dimensional schematic diagram of two half-frames fastened together; Figure 7 This is a three-dimensional schematic diagram of half of the screen being installed on the screen frame; Figure 8 This is a schematic diagram of the air nozzle; Figure 9 This is a side view of the air nozzle.

[0018] In the diagram: 1-Half frame, 2-Screen frame, 3-Half screen, 4-Upper connecting component, 5-Lower connecting component, 6-Blind hole, 7-Long slot, 8-Slot, 9-Screen cleaning device, 10-Connecting skirt, 11-Positioning plug, 12-Positioning groove, 13-Screen support, 41-Pin, 42-Spring, 43-Slide rod, 44-Connecting rod, 45-Fixing pin, 46-Handle, 47-Block, 48-Compression spring, 49-Fixing groove, 91-Ring 92-Seat, 93-Annular cover, 94-Blowing pipe, 95-Blowing nozzle, 96-Rotary drive mechanism, 97-Air inlet, 98-Guide wheel, 99-Guide rail, 910-Annular sealing body, 911-Sealing ring, 912-Annular sealing groove, 913-Annular receiving groove, 951-Connecting pipe, 952-Flat blowing nozzle, 953-Twisting protrusion, 954-Threaded section, 961-Drive motor, 962-Drive gear, 963-Annular gear. Detailed Implementation

[0019] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 This invention discloses a screen device for a vertical rice milling machine, comprising two half-frames 1 and two arc-shaped screen frames 2. The two half-frames 1 are fastened together to form a cylindrical frame structure. Each half-frame 1 has an upper connecting component 4 and a lower connecting component 5 on its upper and lower sides for detachable connection with a screen frame 2. Each screen frame 2 has a matching half-screen 3. The upper connecting component 4 includes several pins 41, and the lower end of the upper side of each half-frame 1 has a number of pins 41 for connecting with the pins 41. Each blind hole 6 has the same number of blind holes 6, and each blind hole 6 is equipped with a pin 41 and a spring 42. The spring 42 is provided between the pin 41 and the blind end of the blind hole 6. The outer side of the upper frame of the half frame 1 is provided with long slots 7 that correspond one-to-one with the blind holes 6 and are connected. Each long slot 7 is equipped with a slide rod 43 that is fixedly connected to the pin 41. The slide rod 43 is provided with a connecting rod 44. The screen frame 2 is provided with slots 8 that correspond one-to-one with the pin 41 and are engaged. The structure of the lower connecting component 5 is a mirror image of the upper connecting component 4.

[0020] The lower end of the pin 41 is in the shape of an inverted frustum.

[0021] The screen frame 2 is provided with a plurality of screen supports 13 spaced apart from top to bottom, and the screen supports 13 are matched with the arc-shaped surface of half screen 3.

[0022] Both ends of the half-screen 3 are provided with connecting skirts 10, which are respectively attached to the front and rear end faces of the screen frame 2. Both the front and rear ends of the screen frame 2 are provided with positioning plugs 11 that pass through the connecting skirts 10. Both the front and rear sides of the half-frame 1 are provided with positioning grooves 12 that cooperate with the positioning plugs 11.

[0023] A fixing pin 45 is provided on the connecting rod 44. A handle 46 is provided at the outer end of the fixing pin 45. A stop 47 is provided on the fixing pin 45. A compression spring 48 is sleeved on the fixing pin 45 between the stop 47 and the inner side of the connecting rod 44. A fixing groove 49 is provided on the half frame 1 for the fixing pin 45 to be inserted.

[0024] It also includes a screen cleaning device 9, which includes an annular seat 91, an annular groove 92, an annular cover 93, an air blowing pipe 94, several air blowing nozzles 95, a rotary drive mechanism 96, and an air inlet 97. The annular seat 91 has an annular groove 92 at its upper end. The annular cover 93 is rotatably provided on the annular seat 91 to close the opening of the annular groove 92. The annular cover 93 is provided with an air blowing pipe 94 communicating with the annular groove 92. The air blowing pipe 94 is provided with air blowing nozzles 95. The annular seat 91 is provided with an air inlet 97 communicating with the annular groove 92. The rotary drive mechanism 96 drives the annular cover 93 to rotate, and the annular cover 93 drives the air blowing pipe 94 to rotate around the cylindrical frame.

[0025] The annular cover 93 is provided with a plurality of guide wheels 98 located inside the annular seat 91, and the inner side of the annular seat 91 is provided with guide rails 99 that cooperate with the guide wheels 98.

[0026] The rotary drive mechanism 96 includes a drive motor 961, a drive gear 962, and a ring gear 963. The drive gear 962 is provided on the rotating shaft of the drive motor 961, and the drive gear 962 meshes with the ring gear 963 provided on the outer side of the ring cover 93.

[0027] The annular cover 93 is provided with two annular sealing bodies 910 located in the annular groove 92. Each annular sealing body 910 is provided with a sealing ring 911. The annular groove 92 is provided with annular sealing grooves 912 that correspond to and cooperate with the sealing rings 911. The lower outer side of each annular sealing body 910 is provided with annular receiving grooves 913 that cooperate with the sealing rings 911. The inner diameter of the annular receiving grooves 913 is larger than the inner diameter of the sealing rings 911.

[0028] The air nozzle 95 includes a connecting tube 951, and a flat air outlet 952 is integrally formed at the rear end of the connecting tube 951. The connection between the flat air outlet 952 and the connecting tube 951 is a rearward convex arc shape. The connecting tube 951 is provided with a screwing protrusion 953, and the cross-section of the screwing protrusion 953 is a regular polygon. The front end of the connecting tube 951 is provided with a threaded section 954 that is threadedly connected to the air blowing tube 94. The width of the flat air outlet 952 gradually increases from front to back, and the internal height of the flat air outlet 952 gradually decreases from front to back.

[0029] Working process of this invention: In the operation of the screen device of the vertical rice milling machine of the present invention, when the screen frame 2 needs to be disassembled, the connecting rod 44 is pulled away from the screen frame 2. The connecting rod 44 drives the corresponding pin 41 to retract into the blind hole 6 through the sliding rod 43. When the fixing pin 45 corresponds to the corresponding fixing groove 49, the stop body 47 drives the fixing pin 45 to insert into the corresponding fixing groove 49 under the action of the compression spring 48. At this time, the pin 41 is completely removed from the blind hole 6, and then the screen frame 2 can be disassembled.

[0030] Compressed air enters the annular groove 92 through the air inlet 97, and then blows out through the air pipe 94 and the air nozzle 95 to clean the screen. The drive motor 961 drives the annular cover 93 to rotate through the cooperation of the drive gear 962 and the annular gear 963. The annular cover 93 drives the air nozzle 95 to rotate around the screen through the air pipe 94. It is easy to use and reduces the amount of manual labor.

[0031] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A sieve device for a vertical rice milling machine, characterized in that: The system includes two half-frames (1) and two screen frames (2). The two half-frames (1) are fastened together to form a cylindrical frame structure. Each half-frame (1) has an upper connecting component (4) and a lower connecting component (5) on its upper and lower sides for detachable connection with a screen frame (2). Each screen frame (2) has a matching half-screen (3). The upper connecting component (4) includes several pins (41). The lower end of the upper side of the half-frame (1) has the same number of pins (41) as the upper side. The blind holes (6) are provided with pins (41) and springs (42) passing through them. A spring (42) is provided between the pin (41) and the blind end of the blind hole (6). The outer side of the upper frame of the half frame (1) is provided with long slots (7) that correspond to and communicate with the blind holes (6). A slide rod (43) that is fixedly connected to the pin (41) passes through the long slots (7). A connecting rod (44) is provided on the slide rod (43). A slot (8) that corresponds to and cooperates with the pin (41) is provided on the screen frame (2).

2. The sieve device for a vertical rice milling machine as described in claim 1, characterized in that: The lower end of the pin (41) is in the shape of an inverted frustum.

3. The sieve device for a vertical rice milling machine as described in claim 1, characterized in that: The screen frame (2) is provided with a number of screen supports (13) spaced from top to bottom, and the screen supports (13) are matched with the arc surface of half screen (3).

4. The sieve device for a vertical rice milling machine as described in claim 1, characterized in that: Both ends of the half-screen (3) are provided with connecting skirts (10), which are respectively attached to the front and rear end faces of the screen frame (2). Both the front and rear ends of the screen frame (2) are provided with positioning plugs (11) that pass through the connecting skirts (10). Both the front and rear sides of the half-frame (1) are provided with positioning grooves (12) that cooperate with the positioning plugs (11).

5. The sieve device for a vertical rice milling machine as described in claim 1, characterized in that: A fixing pin (45) is provided on the connecting rod (44). A handle (46) is provided at the outer end of the fixing pin (45). A stop (47) is provided on the fixing pin (45). A compression spring (48) is sleeved on the fixing pin (45) between the stop (47) and the inner side of the connecting rod (44). A fixing groove (49) is provided on the half frame (1) for the fixing pin (45) to be inserted.

6. The sieve device for a vertical rice milling machine as described in claim 1, characterized in that: It also includes a screen cleaning device (9), which includes an annular seat (91), an annular groove (92), an annular cover (93), an air blowing pipe (94), several air blowing nozzles (95), a rotary drive mechanism (96), and an air inlet (97). The annular seat (91) has an annular groove (92) at its upper end. The annular cover (93) is rotatably provided on the annular seat (91) to close the opening of the annular groove (92). The annular cover (93) is provided with an air blowing pipe (94) communicating with the annular groove (92). The air blowing pipe (94) is provided with an air blowing nozzle (95). The annular seat (91) is provided with an air inlet (97) communicating with the annular groove (92). The rotary drive mechanism (96) drives the annular cover (93) to rotate. The annular cover (93) drives the air blowing pipe (94) to rotate around the cylindrical frame.

7. The sieve device for a vertical rice milling machine as described in claim 6, characterized in that: The annular cover (93) is provided with a plurality of guide wheels (98) located inside the annular seat (91), and the inner side of the annular seat (91) is provided with guide rails (99) that cooperate with the guide wheels (98).

8. The sieve device for a vertical rice milling machine as described in claim 6, characterized in that: The rotary drive mechanism (96) includes a drive motor (961), a drive gear (962) and a ring gear (963). The drive gear (962) is provided on the rotating shaft of the drive motor (961), and the drive gear (962) meshes with the ring gear (963) provided on the outside of the ring cover (93).

9. The sieve device for a vertical rice milling machine as described in claim 6, characterized in that: The annular cover (93) is provided with two annular sealing bodies (910) located in the annular groove (92). Each annular sealing body (910) is provided with a sealing ring (911). The annular groove (92) is provided with an annular sealing groove (912) that corresponds to and cooperates with the sealing ring (911). The lower outer side of each annular sealing body (910) is provided with an annular receiving groove (913) that cooperates with the sealing ring (911). The inner diameter of the annular receiving groove (913) is larger than the inner diameter of the sealing ring (911).

10. A screen device for a vertical rice milling machine as described in any one of claims 6 to 9, characterized in that: The air nozzle (95) includes a connecting tube (951), and a flat air outlet (952) is integrally formed at the rear end of the connecting tube (951). The connection between the flat air outlet (952) and the connecting tube (951) is a rearward convex arc shape. The connecting tube (951) is provided with a screwing protrusion (953), and the cross-section of the screwing protrusion (953) is a regular polygon shape. The front end of the connecting tube (951) is provided with a threaded section (954) that is threaded to the air blowing tube (94). The width of the flat air outlet (952) gradually increases from front to back, and the internal height of the flat air outlet (952) gradually decreases from front to back.

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