CN110302950B

CN110302950B - Flour screening machine

Info

Publication number: CN110302950B
Application number: CN201910554016.XA
Authority: CN
Inventors: 李以挺
Original assignee: 山东元灏面粉有限公司
Current assignee: Shandong Yuanhao Flour Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2022-04-19
Anticipated expiration: 2039-06-25
Also published as: CN110302950A

Abstract

The invention relates to a screening machine, in particular to a flour screening machine. The technical problem is as follows: the flour screening machine can replace manual work to screen flour, avoid the flour to drop to ground and lead to the waste, and can also avoid the hand ache to influence follow-up work. The technical scheme is as follows: a flour screening machine comprises a bottom plate, a support plate, a fixing frame, a first bearing seat, an inner hexagonal sleeve, a first guide rod, an installation frame, a double-shaft motor and the like; the supporting plates are symmetrically and fixedly connected to the left side and the right side of the top of the bottom plate, the fixing frame is installed between the inner ends of the supporting plates on the left side and the right side, and a screening device capable of screening flour is arranged in the fixing frame. According to the flour screening machine, the first gear is meshed with the crown gear, the double-shaft motor is started, the net frame can rotate, flour is poured into the net frame through the feed hopper, the flour can be screened by rotating the net frame, the flour does not need to be screened by a screen, the flour screening machine is labor-saving and convenient to use, and waste caused by the fact that the flour falls to the ground can be avoided.

Description

Flour screening machine

Technical Field

The invention relates to a screening machine, in particular to a flour screening machine.

Background

In daily life, the preparation of a lot of food all need use thin flour, but there is thickness to have after flour production comes out, then need to carry out the screening processing to the flour, make things convenient for follow-up use, people all screen flour with the sieve usually, because the flange of sieve is than lower, it leads to extravagant to drop to ground easily among the flour screening process, and long-time rocking sieve, the easy ache of hand influences follow-up work, so people can lay the oiled paper around and collect the flour that drops, and the screening has a rest for a moment, so work efficiency is low, still relatively more troublesome.

Disclosure of Invention

In order to overcome because the flange of sieve is than lower, drop easily to ground among the flour screening process and lead to extravagant to long-time rocking the sieve, the easy ache of hand influences the shortcoming of follow-up work, technical problem: the flour screening machine can replace manual work to screen flour, avoid the flour to drop to ground and lead to the waste, and can also avoid the hand ache to influence follow-up work.

The technical scheme is as follows: a flour screening machine comprises a bottom plate, support plates, a fixing frame, a first bearing seat, an inner hexagonal sleeve, a first guide rod, a mounting frame, a double-shaft motor, a first outer hexagonal rod, a first gear, a second bearing seat, a second outer hexagonal rod, a crown gear and a screening device, wherein the support plates are symmetrically and fixedly connected to the left side and the right side of the top of the bottom plate, the fixing frame is installed between the inner ends of the support plates on the left side and the right side, the screening device capable of screening flour is arranged in the fixing frame, the second bearing seat is installed in the middle of the front side of the fixing frame, the second outer hexagonal rod is fixedly connected with a bearing in the second bearing seat, the rear end of the second outer hexagonal rod is matched with the screening device, the crown gear is fixedly connected to the front end of the second outer hexagonal rod, first guide holes are formed in the upper parts of the support plates on the left side and the right side, the first guide rod is positioned between the first guide holes on the left side and the right side, the mounting frame with a supporting function is fixedly connected to the middle of the top of the first guide rod, the double-shaft motor is bolted on the top end of the mounting frame, two output shafts of the double-shaft motor are connected with first outer hexagonal rods through couplings, two first gears matched with crown gears are arranged and are respectively arranged on the first outer hexagonal rods on the left side and the right side, the first gears are positioned on the front sides of the crown gears, the upper parts of the support plates on the left side and the right side are provided with first bearing seats in an embedded mode, the first bearing seats are positioned above the first guide holes, the inner hexagonal sleeves playing a role in guiding are fixedly connected with bearings in the first bearing seats, and the first outer hexagonal rods on the left side and the right side are respectively positioned in the inner hexagonal sleeves on the left side and the right side and are matched with the inner hexagonal sleeves.

Optionally, the screening device comprises a screen frame, a third bearing seat, a feeding hopper, a cover plate and a first clamping block, a first opening for guiding is arranged in the middle of the rear side of the fixing frame, first clamping holes are arranged on the upper side and the lower side of the rear side of the outer side of the fixing frame, the cover plate capable of covering the first opening is arranged on the rear side of the fixing frame, the first clamping block matched with the first clamping hole is fixedly connected on the upper side and the lower side of the front side of the cover plate, the first clamping block is positioned in the first clamping hole, the feeding hopper capable of adding flour is embedded in the middle of the cover plate, the front end of the lower part of the feeding hopper passes through the first opening and is positioned in the fixing frame, the screen frame capable of screening flour is positioned in the fixing frame, the third bearing seat is embedded in the middle of the rear side of the screen frame, the front end of the lower part of the feeding hopper is fixedly connected with a bearing in the third bearing seat, an inner hexagonal hole matched with a second outer angle bar is arranged in the middle of the front side of the screen frame, and the rear end of the inner hexagonal hole, the bottom of the fixing frame is provided with a plurality of discharge holes at intervals uniformly, and the discharge holes can drop the screened flour.

Optionally, the device further comprises a driving device capable of moving the first guide rod, the driving device comprises a trapezoidal block, an installation rod, a second guide sleeve, a second guide rod, a wedge block, a first spring, a guide wheel, a movable plate, a pedal and a vertical rod, a second opening for guiding is formed in the lower portion of the right side support plate, the vertical rod for supporting is installed in the middle of the top of the bottom plate, a movable plate for guiding is hinged to the top end of the vertical rod, the pedal is fixedly connected to the right end of the movable plate, the right end of the pedal penetrates through the second opening, the installation rods are fixedly connected to the lower portions of the inner side surfaces of the left side support plate and the right side support plate, the second guide sleeve is fixedly connected to the inner ends of the left side and the right side installation rods, the second guide rod is located in the second guide sleeve, the guide wheel matched with the movable plate is rotatably connected to the bottom end of the second guide rod, the guide wheel is in contact with the movable plate, the top end of the second guide rod is fixedly connected to the wedge block, the first spring is sleeved on the second guide rod, one end of the first spring is fixedly connected to the bottom of the wedge block, the other end of the first spring is fixedly connected with the top of the second guide sleeve, a trapezoidal block matched with the wedge block is arranged in the middle of the bottom of the first guide rod, and the trapezoidal block is in contact with the wedge block.

Optionally, the multifunctional screen frame further comprises a third guide rod, a handle, a transverse plate and bristles, a third guide hole is formed in the lower portion of the rear side of the fixing frame, the third guide rod is located in the third guide hole, the transverse plate is fixedly connected to the front end of the third guide rod, the bristles capable of removing residual flour in the screen frame and the fixing frame are connected to the top and the bottom of the transverse plate, and the handle is mounted at the rear end of the third guide rod.

Optionally, the guide device further comprises a movable block, a second spring and an arc-shaped fixture block, a sliding hole for guiding is formed in the middle of the bottom of the first guide hole, the movable block is located in the sliding hole, the second spring is connected between the bottom of the movable block and the bottom of the sliding hole, the two arc-shaped fixture blocks fixed by the first guide rod can be respectively installed at the tops of the movable blocks on the left side and the right side, the two second fixture holes matched with the arc-shaped fixture blocks are formed in the left side and the right side of the bottom of the first guide rod, and the arc-shaped fixture blocks are located in the second fixture holes.

The invention has the beneficial effects that: according to the flour screening machine, the first gear is meshed with the crown gear, the screen frame can be rotated by starting the double-shaft motor, flour is poured into the screen frame through the feed hopper, the flour can be screened by rotating the screen frame, the flour does not need to be screened by a screen, the flour screening machine is labor-saving and convenient, waste caused by the fact that the flour falls to the ground can be avoided, the first guide rod can be moved by an operator more conveniently through the driving device, and residual flour can be removed and collected through the brushing effect, so that the flour waste is avoided.

Drawings

Fig. 1 is a schematic front view of the present invention.

FIG. 2 is a partial right-view schematic diagram of the present invention.

Description of reference numerals: 1, a bottom plate, 2 support plates, 3 fixed frames, 4 first bearing seats, 5 inner hexagonal sleeves, 6 first guide holes, 7 first guide rods, 8 mounting frames, 9 double-shaft motors, 10 first outer hexagonal rods, 11 first gears, 12 second bearing seats, 13 second outer hexagonal rods, 14 crown gears, 15 screening devices, 151 first openings, 152 mesh frames, 153 inner hexagonal holes, 154 third bearing seats, 155 feed hoppers, 156 cover plates, 157 first clamping holes, 158 first clamping blocks, 159 discharge holes, 16 driving devices, 161 trapezoidal blocks, 162 mounting rods, 163 second guide sleeves, 164 second guide rods, 165 wedge blocks, 166 first springs, 167 guide wheels, 168 movable plates, 169 second openings, 1610 pedals, 1611 vertical rods, 17 third guide holes, 18 third guide rods, 19 handles, 20 transverse plates, 21 bristles, 22 sliding holes, 23 movable blocks, 24 second springs, 25 arc-shaped clamping blocks and 26 second clamping holes.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

Example 1

A flour screening machine is disclosed, as shown in figure 1-2, comprising a bottom plate 1, a support plate 2, a fixing frame 3, a first bearing seat 4, an inner hexagonal sleeve 5, a first guide rod 7, a mounting rack 8, a double-shaft motor 9, a first outer hexagonal rod 10, a first gear 11, a second bearing seat 12, a second outer hexagonal rod 13, a crown gear 14 and a screening device 15, wherein the support plate 2 is symmetrically and fixedly connected with the left side and the right side of the top of the bottom plate 1, the bottom plate 1 is connected with the support plate 2 through a bolt connection mode, the fixing frame 3 is arranged between the inner ends of the support plates 2 at the left side and the right side, the fixing frame 3 is connected with the support plate 2 through a bolt connection mode, the screening device 15 capable of screening flour is arranged in the fixing frame 3, the second bearing seat 12 is arranged in the middle part of the front side of the fixing frame 3, the second outer hexagonal rod 13 is fixedly connected with a bearing in the second bearing seat 12, the rear end of the second outer hexagonal rod 13 is matched with the screening device 15, a crown gear 14 is fixedly connected at the front end of a second outer hexagonal rod 13, first guide holes 6 are formed in the upper parts of left and right support plates 2, a first guide rod 7 is positioned between the left and right first guide holes 6, a support mounting frame 8 is fixedly connected in the middle of the top of the first guide rod 7, the first guide rod 7 is connected with the mounting frame 8 in a welding connection mode, a double-shaft motor 9 is bolted at the top end of the mounting frame 8, two output shafts of the double-shaft motor 9 are connected with first outer hexagonal rods 10 through couplings, two first gears 11 matched with the crown gear 14 are respectively mounted on the left and right first outer hexagonal rods 10, the first gear 11 is positioned at the front side of the crown gear 14, first bearing seats 4 are mounted in the upper parts of the left and right support plates 2 in an embedded mode, the first bearing seats 4 are positioned above the first guide holes 6, and the inner hexagonal sleeves 5 for guiding are fixedly connected with bearings in the first bearing seats 4, the first outer hexagonal rods 10 on the left side and the right side are respectively positioned in the inner hexagonal sleeves 5 on the left side and the right side to be matched with the inner hexagonal sleeves.

Example 2

A flour screening machine is shown in figure 1-2 and comprises a bottom plate 1, support plates 2, a fixing frame 3, a first bearing seat 4, an inner hexagonal sleeve 5, a first guide rod 7, a mounting frame 8, a double-shaft motor 9, a first outer hexagonal rod 10, a first gear 11, a second bearing seat 12, a second outer hexagonal rod 13, a crown gear 14 and a screening device 15, wherein the support plates 2 are symmetrically and fixedly connected to the left side and the right side of the top of the bottom plate 1, the fixing frame 3 is installed between the inner ends of the support plates 2 on the left side and the right side, the screening device 15 capable of screening flour is arranged in the fixing frame 3, the second bearing seat 12 is installed in the middle of the front side of the fixing frame 3, the second outer hexagonal rod 13 is fixedly connected with a bearing in the second bearing seat 12, the rear end of the second outer hexagonal rod 13 is matched with the screening device 15, the front end of the second outer hexagonal rod 13 is fixedly connected with the crown gear 14, the upper parts of the support plates 2 on the left side and the right side are provided with first guide holes 6, the first guide rod 7 is located between the first guide holes 6 on the left side and the right side, an installation frame 8 with a supporting effect is fixedly connected to the middle of the top of the first guide rod 7, the double-shaft motor 9 is bolted to the top end of the installation frame 8, two output shafts of the double-shaft motor 9 are connected with first outer hexagonal rods 10 through couplings, two first gears 11 matched with the crown gears 14 are arranged on the first outer hexagonal rods 10 on the left side and the right side respectively, the first gears 11 are located on the front sides of the crown gears 14, the upper portions of the support plates 2 on the left side and the right side are all embedded with first bearing seats 4, the first bearing seats 4 are located above the first guide holes 6, the inner hexagonal sleeves 5 with a guiding effect are fixedly connected with bearings in the first bearing seats 4, and the first outer hexagonal rods 10 on the left side and the right side are located in the inner hexagonal sleeves 5 on the left side and the right side respectively and matched with the inner hexagonal sleeves.

The material sieving device 15 comprises a screen frame 152, a third bearing seat 154, a feed hopper 155, a cover plate 156 and a first clamping block 158, wherein the middle part of the rear side of the fixed frame 3 is provided with a first opening 151 for guiding, the upper and lower sides of the outer rear side surface of the fixed frame 3 are provided with first clamping holes 157, the rear side of the fixed frame 3 is provided with the cover plate 156 capable of covering the first opening 151, the upper and lower sides of the front side surface of the cover plate 156 are fixedly connected with the first clamping blocks 158 matched with the first clamping holes 157, the cover plate 156 is connected with the first clamping blocks 158 in a welding connection mode, the first clamping blocks 158 are positioned in the first clamping holes 157, the feed hopper 155 capable of adding flour is embedded in the middle of the cover plate 156, the front end of the lower part of the feed hopper 155 penetrates through the first opening 151 and is positioned in the fixed frame 3, the screen frame 152 capable of sieving flour is positioned in the fixed frame 3, the third bearing seat 154 is installed in the middle part of the rear side surface of the screen frame 152, the front end of the lower part of the feed hopper 155 is fixedly connected with a bearing in the third bearing seat 154, the middle part of the front side surface of the screen frame 152 is provided with a hexagon socket 153 matched with the second external hexagon rod 13, the rear end of the second external hexagon rod 13 is positioned in the hexagon socket 153, and the bottom of the fixing frame 3 is uniformly provided with a plurality of discharge holes 159 capable of dropping screened flour at intervals.

Example 3

The material sieving device 15 comprises a screen frame 152, a third bearing seat 154, a feed hopper 155, a cover plate 156 and a first clamping block 158, the middle part of the rear side of the fixed frame 3 is provided with a first opening 151 for guiding, the upper and lower sides of the outer rear side of the fixed frame 3 are provided with first clamping holes 157, the rear side of the fixed frame 3 is provided with the cover plate 156 capable of covering the first opening 151, the upper and lower sides of the front side of the cover plate 156 are fixedly connected with the first clamping blocks 158 matched with the first clamping holes 157, the first clamping blocks 158 are positioned in the first clamping holes 157, the middle of the cover plate 156 is embedded with the feed hopper 155 capable of adding flour, the front end of the lower part of the feed hopper 155 passes through the first opening 151 and is positioned in the fixed frame 3, the screen frame 152 capable of sieving flour is positioned in the fixed frame 3, the middle part of the rear side of the screen frame 152 is embedded with the third bearing seat 154, the front end of the lower part of the feed hopper 155 is fixedly connected with a bearing in the third bearing seat 154, the middle part of the front side of the screen frame 152 is provided with an inner hole 153 matched with the sixth angle rod 13, the rear end of the second external hexagonal rod 13 is positioned in the internal hexagonal hole 153, and a plurality of discharge holes 159 capable of dropping screened flour are uniformly arranged at the bottom of the fixing frame 3 at intervals.

The device also comprises a driving device 16 capable of moving the first guide rod 7, the driving device 16 comprises a trapezoidal block 161, a mounting rod 162, a second guide sleeve 163, a second guide rod 164, a wedge block 165, a first spring 166, a guide wheel 167, a movable plate 168, a pedal 1610 and a vertical rod 1611, the lower part of the right side support plate 2 is provided with a second opening 169 with a guiding function, the vertical rod 1611 with a supporting function is mounted in the middle of the top of the bottom plate 1, the vertical rod 1611 is connected with the bottom plate 1 in a welding connection mode, the top end of the vertical rod 1611 is hinged with a pair of movable plates 168 with a guiding function, the right end of the movable plate 168 is fixedly connected with the pedal 1610, the movable plate 168 is connected with the pedal 1610 in a welding connection mode, the right end of the pedal 1610 passes through the second opening 169, the lower parts of the inner side surfaces of the left and right side support plates 2 are fixedly connected with the mounting rod 162 in a welding connection mode, the inner ends of the left and right side mounting rods 162 are fixedly connected with the second guide sleeve 163, the second guide rod 164 is located in the second guide sleeve 163, the bottom end of the second guide rod 164 is rotatably connected with a guide wheel 167 matched with the movable plate 168, the guide wheel 167 is in contact with the movable plate 168, the top end of the second guide rod 164 is fixedly connected with a wedge block 165, the first spring 166 is sleeved on the second guide rod 164, one end of the first spring 166 is fixedly connected with the bottom of the wedge block 165, the other end of the first spring 166 is fixedly connected with the top of the second guide sleeve 163, a trapezoid block 161 matched with the wedge block 165 is installed in the middle of the bottom of the first guide rod 7, and the trapezoid block 161 is in contact with the wedge block 165.

Example 4

The device also comprises a driving device 16 capable of moving the first guide rod 7, the driving device 16 comprises a trapezoidal block 161, a mounting rod 162, a second guide sleeve 163, a second guide rod 164, a wedge block 165, a first spring 166, a guide wheel 167, a movable plate 168, a pedal 1610 and a vertical rod 1611, the lower part of the right side support plate 2 is provided with a second opening 169 with a guiding function, the vertical rod 1611 with a supporting function is mounted in the middle of the top of the bottom plate 1, the top end of the vertical rod 1611 is hinged with a movable plate 168 with a guiding function, the right end of the movable plate 168 is fixedly connected with the pedal 1610, the right end of the pedal 1610 passes through the second opening 169, the lower parts of the inner side surfaces of the left and right side support plates 2 are fixedly connected with the mounting rod 162, the inner ends of the left and right side mounting rods 162 are fixedly connected with the second guide sleeve 163, the second guide rod 164 is positioned in the second guide sleeve 163, the bottom end of the second guide rod 164 is rotatably connected with the guide wheel 167 matched with the movable plate 168, and the guide wheel 167 is contacted with the movable plate 168, the top end of the second guide rod 164 is fixedly connected with a wedge block 165, the first spring 166 is sleeved on the second guide rod 164, one end of the first spring 166 is fixedly connected with the bottom of the wedge block 165, the other end of the first spring 166 is fixedly connected with the top of the second guide sleeve 163, the trapezoid block 161 matched with the wedge block 165 is installed in the middle of the bottom of the first guide rod 7, and the trapezoid block 161 is in contact with the wedge block 165.

The multifunctional screen frame is characterized by further comprising a third guide rod 18, a handle 19, a transverse plate 20 and bristles 21, a third guide hole 17 is formed in the lower portion of the rear side of the fixed frame 3, the third guide rod 18 is located in the third guide hole 17, the transverse plate 20 is fixedly connected to the front end of the third guide rod 18, the third guide rod 18 is connected with the transverse plate 20 in a welding connection mode, the bristles 21 capable of removing residual flour in the screen frame 152 and the fixed frame 3 are connected to the top and the bottom of the transverse plate 20, the handle 19 is installed at the rear end of the third guide rod 18, and the handle 19 is connected with the third guide rod 18 in a welding connection mode.

Example 5

The multifunctional screen frame is characterized by further comprising a third guide rod 18, a handle 19, a transverse plate 20 and bristles 21, wherein a third guide hole 17 is formed in the lower portion of the rear side of the fixed frame 3, the third guide rod 18 is located in the third guide hole 17, the transverse plate 20 is fixedly connected to the front end of the third guide rod 18, the bristles 21 capable of removing residual flour in the screen frame 152 and the fixed frame 3 are connected to the top and the bottom of the transverse plate 20, and the handle 19 is mounted at the rear end of the third guide rod 18.

Still including movable block 23, second spring 24 and arc fixture block 25, open the slide opening 22 that has the guide effect in the middle of the 6 bottoms in first guide hole, movable block 23 is located slide opening 22, be connected with second spring 24 between movable block 23 bottom and the slide opening 22 bottom, movable block 23 is connected with second spring 24 through welded connection's mode, can be two with the fixed arc fixture block 25 of first guide arm 7, install respectively in left and right sides movable block 23 top, arc fixture block 25 is connected with movable block 23 through welded connection's mode, first guide arm 7 bottom left and right sides all opens two second card holes 26 with arc fixture block 25 complex, arc fixture block 25 is located second card hole 26.

Firstly, an operator puts a collecting container on a bottom plate 1 and moves the collecting container to the right below a fixed frame 3, pulls a first guide rod 7 to move leftwards, the first guide rod 7 moves leftwards to drive a mounting frame 8 to move leftwards, the mounting frame 8 moves leftwards to drive a double-shaft motor 9 to move leftwards, the double-shaft motor 9 moves leftwards to drive a first gear 11 to move leftwards through a first outer hexagonal rod 10, when the left first gear 11 moves leftwards to be meshed with a crown gear 14, the double-shaft motor 9 can be started by stopping pushing the first guide rod 7, the double-shaft motor 9 rotates forwards to drive the first outer hexagonal rod 10 to rotate forwards, the first outer hexagonal rod 10 rotates forwards to drive the first gear 11 to rotate forwards, the left first gear 11 rotates to drive the crown gear 14 to rotate backwards, the crown gear 14 rotates backwards to drive a second outer hexagonal rod 13 to rotate backwards, the second outer hexagonal rod 13 rotates backwards to drive a screening device 15 to rotate backwards, and then the flour can be poured into the screening device 15, sifting device 15 reversal and screening flour, fine flour is screened to collecting container in, coarse flour then is stayed in sifting device 15, when flour screening to a period of time, can close double-shaft motor 9, the first guide arm 7 of pulling moves right, and then when the first gear 11 in right side and crown gear 14 mesh, stop the first guide arm 7 of pulling, the first gear 11 in left side does not mesh with crown gear 14, can start double-shaft motor 9 corotation once more, and then the first gear 11 corotation in right side drives crown gear 14 corotation, and then make sifting device 15 corotation screen flour once more, it is more comprehensive to screen. After the flour screening is finished, the double-shaft motor 9 can be turned off, the first guide rod 7 is pushed to move leftwards, the first gear 11 is not meshed with the crown gear 14, the collecting container can be taken down, the fine flour can be poured out, and the coarse flour in the screening device 15 can be taken out for treatment.

When biax motor 9 corotation, the second outer hexagonal pole 13 reversal drives the net frame 152 reversal through interior hexagonal hole 153, operating personnel can pour flour into in feeder hopper 155, flour in the feeder hopper 155 drops to in the net frame 152, net frame 152 reversal then screens flour, the fine flour of selecting out drops to the collection container in through discharge gate 159, coarse flour then is stayed in net frame 152, after net frame 152 reversal selects the flour a period of time, operating personnel makes the first gear 11 in right side and crown gear 14 meshing, and then net frame 152 corotation carries out comprehensive screening to flour once more. When the flour screening is completed, the double-shaft motor 9 is turned off, the screen frame 152 stops rotating, the operator can pull the cover plate 156 to move backwards, the cover plate 156 moves backwards to drive the first clamping block 158 to move backwards to be separated from the first clamping hole 157, meanwhile, the cover plate 156 moves backward to move the feed hopper 155 backward, the feed hopper 155 moves backward to move the screen frame 152 backward through the third bearing seat 154, the screen frame 152 moves backward to disengage the second external hexagonal rod 13 from the internal hexagonal hole 153, the screen frame 152 moves backward to move outside the fixing frame 3 through the first opening 151, the coarse flour in the screen frame 152 can be poured out through the feed hopper 155, after the coarse flour is completely poured out, the screen frame 152 is pushed into the frame 3 through the first opening 151, so that the second external hexagonal rod 13 is inserted into the internal hexagonal hole 153, the cover 156 further causes the first latch 158 to be snapped into the first latch hole 157 to secure the feeding hopper 155.

Firstly, an operator pulls the pedal 1610 to swing upwards, the pedal 1610 swings upwards to drive the right part of the movable plate 168 to swing upwards, the right part of the movable plate 168 swings upwards to drive the right guide wheel 167 to move upwards, the right guide wheel 167 moves upwards to drive the right second guide rod 164 to move upwards, the right second guide rod 164 moves upwards to drive the right wedge-shaped block 165 to move upwards, the first spring 166 is stretched, the right wedge-shaped block 165 moves upwards to push the trapezoid block 161 to move leftwards, the trapezoid block 161 moves leftwards to drive the first guide rod 7 to move leftwards, and then the left first gear 11 is meshed with the crown gear 14, the pedal 1610 is released, the right wedge-shaped block 165 moves downwards to drive the right second guide rod 164 to move downwards under the action of the right first spring 166, the right second guide rod 164 moves downwards to drive the right part of the movable plate 168 to swing downwards through the right guide wheel 167 to return to the original position, and flour screening can be started. When the screen frame 152 rotates reversely to screen flour for a period of time, the double-shaft motor 9 is turned off, and the pedal 1610 can be stepped to swing downwards, the pedal 1610 swings downwards to drive the right part of the movable plate 168 to swing downwards, the right part of the movable plate 168 swings downwards to make the left part swing upwards, the left part of the movable plate 168 swings upwards to drive the left guide wheel 167 to move upwards, the left guide wheel 167 moves upwards to drive the left wedge-shaped block 165 to move upwards through the left second guide rod 164, the left first spring 166 is stretched, the left wedge-shaped block 165 moves upwards to drive the trapezoid-shaped block 161 to move rightwards, the trapezoid-shaped block 161 moves rightwards to drive the first guide rod 7 to move rightwards, and then the right first gear 11 is meshed with the crown gear 14, the pedal 1610 is loosened, the left wedge-shaped block 165 moves downwards to return to the original position under the action of the left first spring 166, and the double-shaft motor 9 can be started again, so that the net frame 152 rotates forwards to screen flour. After the flour screening is completed, the first guide rod 7 is pushed to drive the trapezoidal block 161 to move and return to the original position. In this way, it is more convenient for the operator to move the first guide bar 7 so that the first gear wheel 11 engages with the crown gear wheel 14.

After the flour screening is completed, an operator can pull the handle 19 to move backwards, the handle 19 moves backwards to drive the third guide rod 18 to move backwards, the third guide rod 18 moves backwards to drive the transverse plate 20 to move backwards, the transverse plate 20 moves backwards to drive the bristles 21 to move backwards, the bristles 21 move backwards to remove flour remained at the bottom of the net frame 152 and the bottom of the fixed frame 3, the removed flour drops into the collection container, when the bristles 21 move backwards to the maximum stroke, the handle 19 can be pushed to move forwards, the bristles 21 are driven to move forwards to return to the original position, and the handle 19 stops being pushed. Thus, waste caused by remaining flour can be prevented.

When first guide arm 7 moved left, first guide arm 7 slided on arc fixture block 25, second spring 24 compresses, when left inboard second card hole 26 moved to left side arc fixture block 25 top, right outside second card hole 26 also moved to right side arc fixture block 25 top, because of the effect of second spring 24, movable block 23 moved up and drives arc fixture block 25 and upwards move and insert in second card hole 26, arc fixture block 25 and the cooperation of second card hole 26 are fixed with first guide arm 7, can stop the removal to first guide arm 7, just also explain that left side first gear 11 has meshed with crown gear 14, can begin to filter the flour. When the first guide rod 7 moves rightwards, the arc-shaped clamping block 25 is separated from the left inner side second clamping hole 26 and the right outer side second clamping hole 26, and then when the arc-shaped clamping block 25 is clamped into the left outer side second clamping hole 26 and the right inner side second clamping hole 26, the first guide rod 7 stops moving, namely the right first gear 11 is meshed with the crown gear 14, and flour can be screened. In this way, the operator is made more aware that the first gear wheel 11 is in mesh with the crown gear wheel 14.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A flour screening machine comprises a bottom plate (1), support plates (2), a fixing frame (3), first bearing seats (4), an inner hexagonal sleeve (5), first guide rods (7), an installation frame (8), a double-shaft motor (9) and first outer hexagonal rods (10), wherein the support plates (2) are symmetrically and fixedly connected to the left side and the right side of the top of the bottom plate (1), the fixing frame (3) is installed between the inner ends of the support plates (2) on the left side and the right side, the upper portions of the support plates (2) on the left side and the right side are respectively provided with a first guide hole (6), the first guide rods (7) are located between the first guide holes (6) on the left side and the right side, the installation frame (8) with a supporting function is fixedly connected to the middle of the top of the first guide rods (7), the double-shaft motor (9) is bolted to the top end of the installation frame (8), two output shafts of the double-shaft motor (9) are both connected with the first outer hexagonal rods (10) through couplings, the upper portions of the support plates (2) on the left side and the right side are respectively provided with the first bearing seats (4) in an embedded mode, the first bearing seat (4) is positioned above the first guide hole (6), the inner hexagonal sleeve (5) playing a guiding role is fixedly connected with a bearing in the first bearing seat (4), the first outer hexagonal rods (10) at the left side and the right side are respectively positioned in the inner hexagonal sleeves (5) at the left side and the right side and are matched with the inner hexagonal sleeves, the first guide hole is characterized by further comprising a first gear (11), a second bearing seat (12), a second outer hexagonal rod (13), a crown gear (14) and a screening device (15), the fixing frame (3) is internally provided with the screening device (15) capable of screening flour, the second bearing seat (12) is arranged in the middle of the front side of the fixing frame (3), the second outer hexagonal rod (13) is fixedly connected with the bearing in the second bearing seat (12), the rear end of the second outer hexagonal rod (13) is matched with the screening device (15), the front end of the second outer hexagonal rod (13) is fixedly connected with the crown gear (14), two first gears (11) matched with the crown gear (14) are respectively arranged on the first outer hexagonal rods (10) at the left side and the right side, and the first gears (11) are positioned at the front side of the crown gear (14); the screening device (15) comprises a screen frame (152), a third bearing seat (154), a feed hopper (155), a cover plate (156) and a first clamping block (158), wherein the middle part of the rear side of the fixed frame (3) is provided with a first opening (151) with a guiding function, the upper side and the lower side of the outer rear side surface of the fixed frame (3) are provided with first clamping holes (157), the rear side of the fixed frame (3) is provided with the cover plate (156) capable of covering the first opening (151), the upper side and the lower side of the front side surface of the cover plate (156) are fixedly connected with the first clamping block (158) matched with the first clamping holes (157), the first clamping block (158) is positioned in the first clamping holes (157), the feed hopper (155) capable of adding flour is installed in the middle of the cover plate (156) in an embedded mode, the front end of the lower part of the feed hopper (155) penetrates through the first opening (151) and is positioned in the fixed frame (3), the screen frame (152) capable of screening flour is positioned in the fixed frame (3), a third bearing seat (154) is installed in the middle of the rear side face of the screen frame (152) in an embedded mode, the front end of the lower portion of the feed hopper (155) is fixedly connected with a bearing in the third bearing seat (154), an inner hexagonal hole (153) matched with the second outer hexagonal rod (13) is formed in the middle of the front side face of the screen frame (152), the rear end of the second outer hexagonal rod (13) is located in the inner hexagonal hole (153), and a plurality of discharge holes (159) capable of enabling screened flour to fall off are formed in the bottom of the fixing frame (3) at even intervals; the device also comprises a driving device (16) capable of enabling the first guide rod (7) to move, the driving device (16) comprises a trapezoidal block (161), a mounting rod (162), a second guide sleeve (163), a second guide rod (164), a wedge block (165), a first spring (166), a guide wheel (167), a movable plate (168), a pedal (1610) and a vertical rod (1611), a second opening (169) with a guiding function is formed in the lower portion of the right side support plate (2), the vertical rod (1611) with a supporting function is mounted in the middle of the top of the bottom plate (1), the top end of the vertical rod (1611) is hinged with the movable plate (168) with a guiding function, the pedal (1610) is fixedly connected to the right end of the movable plate (168), the right end of the pedal (1610) penetrates through the second opening (169), the mounting rods (162) are fixedly connected to the lower portions of the inner side faces of the left and right side support plates (2), the inner ends of the left and right side mounting rods (162) are fixedly connected with the second guide sleeve (163), the second guide rod (164) is located in the second guide sleeve (163), the rotary type of the bottom end of the second guide rod (164) is connected with a guide wheel (167) matched with a movable plate (168), the guide wheel (167) is in contact with the movable plate (168), a wedge block (165) is fixedly connected to the top end of the second guide rod (164), a first spring (166) is sleeved on the second guide rod (164), one end of the first spring (166) is fixedly connected with the bottom of the wedge block (165), the other end of the first spring (166) is fixedly connected with the top of the second guide sleeve (163), a trapezoid block (161) matched with the wedge block (165) is installed in the middle of the bottom of the first guide rod (7), and the trapezoid block (161) is in contact with the wedge block (165).

2. The flour screening machine according to claim 1, further comprising a third guide rod (18), a handle (19), a transverse plate (20) and bristles (21), wherein a third guide hole (17) is formed in the lower portion of the rear side of the fixing frame (3), the third guide rod (18) is located in the third guide hole (17), the transverse plate (20) is fixedly connected to the front end of the third guide rod (18), the bristles (21) capable of removing residual flour in the net frame (152) and the fixing frame (3) are connected to the top and the bottom of the transverse plate (20), and the handle (19) is mounted at the rear end of the third guide rod (18).

3. The flour screening machine according to claim 2, further comprising a movable block (23), a second spring (24) and arc-shaped fixture blocks (25), wherein a sliding hole (22) for guiding is formed in the middle of the bottom of the first guide hole (6), the movable block (23) is located in the sliding hole (22), the second spring (24) is connected between the bottom of the movable block (23) and the bottom of the sliding hole (22), two arc-shaped fixture blocks (25) capable of fixing the first guide rod (7) are respectively mounted at the tops of the movable blocks (23) on the left side and the right side, two second fixture holes (26) matched with the arc-shaped fixture blocks (25) are formed in the left side and the right side of the bottom of the first guide rod (7), and the arc-shaped fixture blocks (25) are located in the second fixture holes (26).