CN108772270A - A kind of small rotary formula Sand screen - Google Patents

Abstract

The present invention relates to a kind of small rotary formula Sand screens, and effectively solution sieve is husky insufficient, and stone topples over inconvenient problem；Its solve technical solution be include two risers, there is the sieve that can be moved left and right and rotate along riser between two risers, sieve can restore to horizontal position, the width of mesh of sieve is adjustable, there are baffle in the front and rear sides of sieve, it is fluted on the medial surface of riser, there is locating rod corresponding with groove on the lateral surface of baffle, multiple guide rods are fixed on sieve, through have can be along the scraper plate that guide rod horizontally slips on guide rod, it is connected with compression spring between scraper plate and the right end of guide rod, there is fixing device on former and later two baffles, movable plate is hinged on the left of sieve, the lower section of riser is equipped with line wheel, rope is wound in line wheel, the end of rope is connect with sieve, there is the eccentric wheel with line wheel alternate rotation on riser；The present invention improves the husky efficiency of sieve, alleviates manpower.

Description

A kind of small rotary formula Sand screen

Technical field

The present invention relates to building engineering field, especially a kind of small rotary formula Sand screen.

Background technology

Some small-sized Sand screens are commonly used on-site, currently, mostly using drum-type or reciprocal vibration-type, most rollers Formula Sand screen cannot effectively be completely separated husky and stone, and roller often makes husky and stone during rotation Together to whereabouts, to husky amount it is relatively more or it is husky relatively moisten in the case of, it is easy to appearance is husky not yet to be screened clean, Just the case where being fallen together with stone, since stone is not of uniform size, it is easy to be stuck in sieve, per after a period of time, just need Artificially cleared up；On the market although some machine uses horizontal positioned gauze simultaneously, then using vibrations Sand is set adequately to be detached with stone, however, after isolation, need artificially to carry away gauze, then outwell stone, this Sample is not only time-consuming and laborious, and is easy to that stone is scattered when lift, and since the mesh of sieve is generally non-adjustable, when When needing thinner sand, tend not to meet the requirements；Therefore a kind of more efficiently device is needed to carry out sieving husky operation at present, To meet production needs.

Invention content

For the above situation, to solve problems of the prior art, it is small-sized that the purpose of the present invention is just to provide one kind Rotary Sand screen, can effectively solve that sieve is husky insufficient, and stone topples over inconvenient problem.

Its technical solution solved be include the riser being placed in parallel before and after two, having between two risers can be along riser or so The sieve for moving and rotating；It can restore to horizontal position after sieve rotation, the width of mesh of sieve is adjustable；The front and rear sides of sieve It is respectively and fixedly provided with a vertical baffle, offers and corresponds and the groove of lateral arrangement on the medial surface of two risers, and it is perpendicular There is locating rod corresponding with groove on the lateral surface of the baffle of plate homonymy, when screening level, the outer end of locating rod can be recessed It horizontally slips in slot, after sieve rotates, locating rod is detached from groove；The guide rod of multiple horizontal cross arrangements is fixed on sieve, Through there are one can be connected with compression spring between the scraper plate that guide rod horizontally slips, scraper plate and the right end of guide rod on multiple guide rods；Before There is the fixing device that scraper plate can be made to be fixed to sieve right end on latter two baffle；

The lower section of the riser is equipped with line wheel, and rope is wound in line wheel, and the other end of rope and the left end of sieve connect；It is perpendicular There is the eccentric wheel with line wheel alternate rotation on plate；When eccentric wheel rotation can drive sieve to move left and right, line wheel is motionless at this time；Work as sieve Net is mobile, and eccentric wheel is motionless after a certain period of time, and line wheel rotation can pull sieve rotation by rope；Sieve rotates by a certain angle Afterwards, scraper plate is detached from fixing device, while scraper plate is moved to the left under the action of compression spring；

The left end of the sieve is hinged with the movable plate that can be swung, and the first drawing is connected between movable plate and locating rod The right side of spring, movable plate is equipped with multiple first pins, and running through on baffle has the buckle that can be moved forward and backward, movable plate to be adjacent to gear When plate, the first pin is snapped clamping, and multiple push rods are connected on the left side of scraper plate；It, can be by pushing away when scraper plate is moved to the left Bar pushes buckle, and the first pin is made to be detached from buckle, and rear push-rod pushes movable plate to turn left, and movable plate is made to be moved to the left； When scraper plate is moved to left end, sieve revolution, and movable plate spinning reduction, the revolution of sieve pulls wire wheel.

Benefit of the present invention improves the husky efficiency of sieve, realizes a degree of automated production, alleviates manpower.

Description of the drawings

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

Fig. 2 is the vertical view of the present invention.

Fig. 3 is the stereogram of the present invention.

Fig. 4 is the partial enlarged view at A in Fig. 3.

Fig. 5 is the isometric side cutaway view of the present invention.

Fig. 6 is the sectional view of Fig. 5.

Fig. 7 is the top plan view of locating rod.

Fig. 8 is the postrotational main view state diagram of sieve.

Specific implementation mode

The specific implementation mode of the present invention is described in further details below in conjunction with attached drawing.

It is provided by Fig. 1 to Fig. 8, the present invention includes the riser 1 being placed in parallel before and after two, and having between two risers 1 can be along perpendicular The sieve 2 that plate 1 is moved left and right and rotated；Sieve 2 can restore after rotating to horizontal position, and the width of mesh of sieve 2 is adjustable；Sieve 2 front and rear sides are respectively and fixedly provided with a vertical baffle 4, offer and correspond and lateral cloth on the medial surface of two risers 1 The groove 5 set, and has locating rod 6 corresponding with groove 5 on the lateral surface of the baffle 4 of 1 homonymy of riser, when sieve 2 is horizontal, The outer end of locating rod 6 can horizontally slip in groove 5, and after sieve 2 rotates, locating rod 6 is detached from groove 5；It is fixed on sieve 2 The guide rod 7 of multiple horizontal cross arrangement, on multiple guide rods 7 through there are one can along the scraper plate 8 that guide rod 7 horizontally slips, scraper plate 8 with Compression spring 9 is connected between the right end of guide rod 7；There is the fixed dress that scraper plate 8 can be made to be fixed to 2 right end of sieve on former and later two baffles 4 It sets；

The lower section of the riser 1 is equipped with line wheel 11, and rope 12, the other end and the sieve 2 of rope 12 are wound in line wheel 11 Left end connects；There is the eccentric wheel 13 with 11 alternate rotation of line wheel on riser 1；When the rotation of eccentric wheel 13 can drive sieve 2 or so to move Dynamic, line wheel 11 is motionless at this time；When sieve 2 moves after a certain period of time, eccentric wheel 13 is motionless, and the rotation of line wheel 11 can be drawn by rope 12 Dynamic sieve 2 rotates；After sieve 2 rotates by a certain angle, scraper plate 8 is detached from fixing device, while scraper plate 8 is under the action of compression spring 9 It is moved to the left；

The left end of the sieve 2 is hinged with the movable plate 14 that can be swung, and is connected between movable plate 14 and locating rod 6 The right side of one tension spring 15, movable plate 14 is equipped with multiple first pins 16, and running through on baffle 4 has the buckle that can be moved forward and backward 17, when movable plate 14 is adjacent to baffle 4, the first pin 16 is snapped 17 clampings, and multiple push rods are connected on the left side of scraper plate 8 18；When scraper plate 8 is moved to the left, buckle 17 can be pushed by push rod 18, the first pin 16 is made to be detached from buckle 17, and rear push-rod 18 It pushes movable plate 14 to turn left, movable plate 14 is made to be moved to the left；When scraper plate 8 is moved to left end, sieve 2 turns round, and living 14 spinning reduction of movable plate, sieve 2 pull line wheel 11 to turn round.

In order to realize moving left and right and rotating for sieve 2, it is fixedly connected positioned at the middle part of the baffle 4 of 2 front and rear sides of sieve There are the supporting rod 19 that front-rear direction is placed, the middle part of former and later two risers 1 to offer straight slot 20, being equipped in straight slot 20 can be along logical The sliding block that slot 20 moves left and right, is connected with resetting spring between sliding block and straight slot 20, supporting rod 19 is placed in sliding block and can be along cunning Block rotates.

It, can be arbitrary between two layers in order to realize that the adjustment of 2 width of mesh of sieve, the sieve 2 are made of upper layer and lower layer Angle is slided, and is fixed by tied silk, when upper layer and lower layer sieve 2 is to horizontally slip, the rear and front end of upper screen 2 with Baffle 4 is fixedly connected, and rear and front end and the baffle 4 of lower screen 2 are slidably connected, and pass through screw between lower screen 2 and baffle 4 It is fixed.

In order to make movable plate 14 that can swing, the lower face of the movable plate 14 is hinged with the left end of sieve 2, simultaneously The rear and front end of movable plate 14 is placed in the outside of former and later two baffles 4, and having on side for the rear and front end of movable plate 14 has 16 and first tension spring 15 of a first pin, the first pin 16 and the first tension spring 15 are installed in the movable plate positioned at 4 outside of baffle On 14.

In order to realize that fixation, the fixing device are two the second pins for being separately fixed at former and later two 1 right ends of riser The lower end of nail 10, the second pin 10 is equipped with the first driving lever 22, and the medial surface of riser 1 is equipped with the second driving lever 23, the first driving lever 22 And second be set with annular between driving lever 23 belt 24, being set on the second pin 10 can be such that the second pin 10 moves up Spring.

In order to make sieve 2 rotate after can be restored to horizontal position, connected between the right end and riser 1 of the sieve 2 There are the second tension spring 21, the installation site of the second tension spring 21 and the second pin 10 and the position that is staggeredly located of locating rod 6.

In order to realize that locating rod 6 can be detached from groove 5, the outside of the baffle 4 is equipped with multiple and locating rod 6 and corresponds Protruding block 25, the rear end of locating rod 6 is placed in the inside of protruding block 25, and locating rod 6 can be moved forward and backward along protruding block 25, locating rod Resetting spring is equipped between 6 rear end and protruding block 25, the outer end of locating rod 6 is orbicule.

In order to realize the alternate rotation of line wheel 11 and eccentric wheel 13, the line wheel 11 and eccentric wheel 13 by motor into Row driving, is set with one-way clutch in line wheel 11 and eccentric wheel 13, and the direction phase of one-way clutch that the two is set with Instead.

In order to realize the alternate rotation of line wheel 11 and eccentric wheel 13, the line wheel 11 and eccentric wheel 13 and be walked by two Stepper motor drives respectively, the stepper motor that two stepper motors are alternately rotated by controller, while being connect with line wheel 11 It can turn round as needed.

In order to realize that the first pin 16 can be snapped 17 fixations, the buckle 17 includes about two companies being placed in parallel Bar 26, for connecting rod 26 through baffle 4 and being moved forward and backward, the both ends of connecting rod 26 are located at the front and rear sides of baffle 4, two connecting rods 26 Block 27 is respectively connected between front-end and back-end, block 27 forms " returning " font with baffle 4 and upper and lower two connecting rods 26；Up and down It is set with the spring that connecting rod 26 can be made to move inward on two connecting rods 26, is located on the block 27 between the rear end of two connecting rods 26 Left end equipped with inclined-plane, the left end energy and contact of incline plane of push rod 18, push rod 18 is orbicule, and fixed plate 28 is fixed on baffle 4, Push rod 18 is moved left and right through fixed plate 28 and along fixed plate 28；The right end of first pin 16 is equipped with inclined-plane, the first pin 16 Lateral surface is equipped with the vertical slot 29 being located on the left of inclined-plane, and vertical slot 29 is open outwardly.

Line wheel 11 rotates excessively in order to prevent, and overload protection arrangement is connected in the line wheel 11.

In order to preferably scrape stone, the lower face of the scraper plate 8 is equipped with the hairbrush being in contact with sieve 2.

In order to preferably detach husky and stone, it can be fixedly connected with one piece in the left side of the lower face of sieve 2 and tilt towards the right side Catch.

In order to make multiple grooves 5 coordinate more preferably, the left and right sides of each riser 1 is all provided with that there are one grooves 5, front and back It is symmetrical before and after groove 5 on two risers 1.

In order to preferably pull riser 1 to move down, the line wheel 11 is former and later two, former and later two line wheels 11 are coaxial Rotation, it is two that rope 12 is also corresponding, while the end of two ropes 12 is connected to the front and rear sides of movable plate 14.

In order to make the rotation of eccentric wheel 13 that sieve 2 can be made to move left and right, the riser 1 of the front and rear sides is equipped with eccentric wheel 13, the both ends of supporting rod 19 are set with rolling bearing, and the outer edge surface of eccentric wheel 13 is in contact with rolling bearing.

The use state of the present invention is, before use, needing the opposite of adjustment upper layer and lower layer sieve 2 according to engineering first It position, will after adjusting to realize the adjusting to 2 width of mesh of sieve by the mutual dislocation of upper and lower two sieves 2 The sieve 2 of lower layer is fixedly connected with baffle 4, while bilevel sieve 2 is fixed available tied silk, is placed on vibrations Opposite movement is generated in the process.

It is just operable at this time after the size of mesh is adjusted, eccentric wheel 13 and line wheel 11 when due to work It is to work alternatively, hereinafter, being illustrated so that eccentric wheel 13 and line wheel 11 are all made of same motor driving as an example.

Motor realizes the transmission between eccentric wheel 13 and line wheel 11 by deceleration device and chain and sprocket wheel, due to wanting Realize therefore the relative rotation between eccentric wheel 13 and line wheel 11 is equipped with one-way clutch, i.e., in eccentric wheel 13 and line wheel 11 Handle ratchet wheel mechanism may be used（Freewheel clutch）, the devices such as roller-type overrunning clutch or free wheeling sprag clutch come it is real It is existing, when arrangement, need it is further note that the installation direction of eccentric wheel 13 and the one-way clutch in line wheel 11 just On the contrary, being rotated to realize that motor rotates forward band movable eccentric wheel 13, motor reversal drives line wheel 11 to rotate.

When carrying out sieving sand, start motor first, motor is made to rotate forward, at this time due to leading between two risers 1 in left and right The shaft installation of front-rear direction placement is crossed there are two eccentric wheel 13, shaft can be located at the lower section of sieve 2, while shaft can be located at branch The right side of strut 19, to avoid countershaft during movement of sieve 2 from being interfered, when motor rotates forward band movable eccentric wheel 13 When being rotated, eccentric wheel 13 can squeeze supporting rod 19 at this time, and sieve 2 is made to be moved to the left, while be connected to sliding block and straight slot To the right, the thrust of eccentric wheel 13 to the left, moves back and forth the elastic force of spring to realize under the action of spring between 20；In sieve During 2 bilateral reciprocations, locating rod 6 is now among groove 5, i.e., sieve 2 can be driven by protruding block 25 and be positioned Bar 6 is moved left and right along groove 5, thereby may be ensured that the horizontality of sieve 2, prevents sieve 2 unstable.

When sieve 2 carries out bilateral reciprocation, feeding is carried out using artificial or conveyer belt at this time, makes husky and stone It drops into together on sieve 2, by the left and right reciprocating rotation of sieve 2, sand can be made to be fallen from sieve 2, while stone being made to stay in On sieve 2；It, can be adequately by husky and stone point as a result of horizontal bilateral reciprocation, therefore when sieving husky It opens, even if encountering husky the case where relatively moistening or sand are condensed into blocks, appoints and so may be implemented adequately to detach.

The sand being sieved through is driven using conveyer belt as needed, or the artificial place that sand is moved to needs, To avoid husky accumulation, the height of whole device that from can also can be adjusted as needed, convenient for installing one in the lower section of device A little transport mechanisms, at the same sieve 2 left side below be equipped with catch, can by be sieved through toggle it to right side, to avoid with it is subsequent Stone is mutually obscured.

After having carried out the sieve sand operation of a period of time, the stone on sieve 2 can gradually increase at this time, will increase at this time Add the burden of sieve 2, reduces the husky efficiency of sieve, motor can be adjusted to invert at this time, in the process of regulation motor positive and negative rotation In, artificial control may be used, it can also be by servo motor and control mechanism adjust automatically, to improve Automated water It is flat.

After motor reversal, stop feed（Feed then stops the operating of mechanical device as being mechanical device）, motor is not at this time Rotated in band movable eccentric wheel 13, while line wheel 11 is rotated, due to the left end of line wheel 11 and sieve 2 by rope 12 into Row connection, for movable plate 14 when sieve 2 keeps horizontal state, movable plate 14 is in vertical state, meanwhile, the first pin 16 Right angle setting relationship is kept with movable plate 14, makes the first pin 16 being located on movable plate 14 that can be stuck in buckle 17, i.e. pin On vertical slot 29 be now placed in " returning " font in the outside of baffle 4, simultaneously because being set with the bullet for keeping connecting rod 26 inside on connecting rod 26 Spring, therefore, the block 27 positioned at 26 outer end of upper and lower two connecting rods can be stuck in vertical slot 29, to allow movable plate 14 to keep perpendicular Straight state can prevent sand from being spread out during moving left and right；After line wheel 11 rotates, rope 12 is shunk at this time, 2 meeting of sieve By the pulling force of rope 12, sieve 2 is made, for support, to be rotated counterclockwise with former and later two supporting rods 19, make the left end of sieve 2 Decline, right end increases；The stone being now placed on sieve 2 can be scrolled down through slowly under gravity, and be rolled to left side.

At this time due to being set with overload protection arrangement in the shaft that is connected with line wheel 11, pull to a certain extent Afterwards, the second tension spring 21 between 2 right end of sieve and riser 1 is gradually stretched, under the action of overload protective device, line at this time Wheel 11 is not being rotated, while the height that the raised height of right end of sieve 2 also reaches capacity.

During 2 right end of sieve is raised, due to passing through the first driving lever between the second pin 10 and the medial surface of riser 1 22, the connection relation of the second driving lever 23 and belt 24, therefore belt 24 can be stretched gradually, until the right end of sieve 2 increases To after setting height, the second pin 10 can be pulled at this time, and be moved down, to make the spring being sleeved on the second pin 10 It is compressed, while the upper end of the second pin 10 is detached from the clamping with scraper plate 8, makes compression spring 9 of the scraper plate 8 on being sleeved on guide rod 7 Under effect, the left end along sieve 2 is moved to the right end of sieve 2, and stirs the stone of residual on the screen 2, keeps stone abundant Cleaning, avoid being stuck in the mesh of sieve 2.

Simultaneously when scraper plate 8 is moved to the left, at this time due to scraper plate 8 be equipped with multiple push rods 18, while multiple push rods 18 with Multiple buckles 17 correspond, and therefore, the left end of push rod 18 can push the block 27 positioned at two 26 inner ends of connecting rod first at this time On inclined-plane, under the action of inclined-plane, entire buckle 17 is displaced outwardly at this time, makes block 27 positioned at 26 outer end of connecting rod far from the Vertical slot 29 on one pin 16, to make buckle 17 not in clamping pin；And the continuation of rear push-rod 18 is moved to the left with scraper plate 8, is pushed away The left end meeting Compressive activities plate 14 of bar 18, makes movable plate 14 be rotated, to make movable plate 14 not keep vertical with sieve 2 State, at this time stone can topple over away from the left end of sieve 2.

After the stone on sieve 2 cleans out, motor is rotated forward again at this time, motor is not in the resistance inverted to line wheel 11 Power, meanwhile, motor rotates forward, and under the action of one-way clutch, line wheel 11 can be rotated forward manually, then line wheel 11 can cover first Under the action of spring on montant and the second tension spring 21 being connected between 2 right end of sieve and riser 1, rotated forward, it is fixed Position bar 6 is again placed in groove 5, and sieve 2 is restored to horizontal state herein；Continue under the action of eccentric wheel 13 simultaneously reciprocal Movement pulls scraper plate 8 at this time after sieve 2 is again restored to horizontal position（If under the side-to-side movement state of sieve 2, do not allow Easily pull, it can be first in pause motor）, so that scraper plate 8 is moved right to again by 10 clamping of the second pin, the second pin 10 it is upper End may be configured as inclined plane shape, facilitate the clamping of scraper plate 8, while the second pin 10 can be fixed on the lateral surface of former and later two baffles 4 On, the upper end of scraper plate 8 can both sides be raised forwards, backwards accordingly at this time, are convenient for 10 clamping scraper plate 8 of the second pin.

Pull scraper plate 8 move right during, be now placed in 8 left side upper push-rod 18 of scraper plate also can with one of block to It moves right, and rear push-rod 18 can make movable plate 14 be restored to vertical state not in Compressive activities plate 14, while push rod 18 is also no longer The block 27 for being located at 26 inside of connecting rod is squeezed, to which when movable plate 14 is restored to vertical state, pin can snap onto again " returning " font of buckle 17.

During sieve 2 is restored to horizontality from heeling condition, it is initially positioned at the of former and later two 4 right ends of baffle Two pins 10 can reset upwards, i.e., belt 24 is not pulling the second pin 10 to move down, and being located at 2 movable plate 14 of sieve also can be to Upper reset, simultaneously because rope 12 is connected between baffle 4 and line wheel 11, therefore the length of rope 12 can be slightly longer, to To the leaving space that moves left and right of sieve 2, further, line wheel 11 has certain damping, can prevent the micro- of one-way clutch Small torque drives line wheel 11 to rotate forward, and the situation to keep rope 12 increasingly tighter occurs.

During use, the end of locating rod 6 can be arranged as required to for rotatable orbicule, to realize exist During sieve 2 moves left and right, reduce the frictional force between locating rod 6 and groove 5, when screening rotation, Ke Yigeng Good extruding locating rod 6, allows locating rod 6 easily to realize flexible, avoids stuck.

The present invention is by horizontal rotatable sieve 2, while sieve 2 uses double-layer structure, realizes the width of mesh of sieve 2 Adjustable, sieve 2 is surrounded by baffle 4, and during can preventing vibrations, sand is spread out from edge, when sieve 2 is horizontally arranged, this When husky and stone can detach totally as far as possible, achieve the purpose that adequately to utilize sand；When 2 slant setting of sieve, i.e. stone After the amount of son reaches a certain level, the movable plate 14 of rotary screen 2,2 left end of sieve can be shunk, while be placed in the same direction with sieve 2 Hairbrush can be moved down along sieve 2, realize hairbrush stir stone, so that stone is poured out from sieve 2, be then again restored to water Leveling device carries out sieving husky operation, and by horizontal and rotation reciprocal, it is husky and topple over the switching of stone to realize sieve, is not required to very important person Work carries out the operation of falling stone.

The present invention makes movable plate 14 not in blocking sieve 2, simultaneously by the design of line wheel 11 by the pulling of line wheel 11 The feature with left lower than right of postrotational sieve 2 is cleverly utilized, the triggering of the second pin 10 and the second pin 10 is filled It installs in right end, while during toppling over stone, can carry out scraping stone operation, be realized and " opened by ingenious structure " and scrape the cooperation of stone between the two, additional operation is not needed, the demand that stone is fully cleared up has been reached.

Sieve 2 is set as rotatable by creativity of the present invention, while scraper plate 8 is arranged and carries out cleaning stone, is changed Traditional sieve sand mode improves the husky efficiency of sieve, realizes a degree of automated production, alleviate manpower.

Claims (10)

1. a kind of small rotary formula Sand screen, including the riser that is placed in parallel before and after two（1）, which is characterized in that two risers （1）Between have can be along riser（1）The sieve for moving left and right and rotating（2）；Sieve（2）It can restore after rotation to horizontal position, sieve Net（2）Width of mesh it is adjustable；Sieve（2）Front and rear sides be respectively and fixedly provided with a vertical baffle（4）, two risers（1）'s It offers and corresponds and the groove of lateral arrangement on medial surface（5）, with riser（1）The baffle of homonymy（4）Lateral surface on have With groove（5）Corresponding locating rod（6）, work as sieve（2）When horizontal, locating rod（6）Outer end can be in groove（5）It slides interior left and right It is dynamic, work as sieve（2）After rotation, locating rod（6）It is detached from groove（5）；Sieve（2）On be fixed with the guide rod of multiple horizontal cross arrangement （7）, multiple guide rods（7）Above through there are one can be along guide rod（7）The scraper plate to horizontally slip（8）, scraper plate（8）With guide rod（7）The right side Compression spring is connected between end（9）；Former and later two baffles（4）On have and can make scraper plate（8）Fixed to sieve（2）The fixed dress of right end It sets；

The riser（1）Lower section be equipped with line wheel（11）, line wheel（11）On be wound with rope（12）, rope（12）The other end With sieve（2）Left end connection；Riser（1）On have and line wheel（11）The eccentric wheel of alternate rotation（13）；Work as eccentric wheel（13）Turn Kinetic energy drives sieve（2）It moves left and right, at this time line wheel（11）It is motionless；Work as sieve（2）It moves after a certain period of time, eccentric wheel（13）No It is dynamic, line wheel（11）Rotation can pass through rope（12）Pull sieve（2）Rotation；Sieve（2）After rotating by a certain angle, scraper plate（8）With Fixing device is detached from, while scraper plate（8）In compression spring（9）Under the action of be moved to the left；

The sieve（2）Left end be hinged with the movable plate that can be swung（14）, movable plate（14）With locating rod（6）Between It is connected with the first tension spring（15）, movable plate（14）Right side be equipped with multiple first pins（16）, baffle（4）It is upper through have can The buckle of back-and-forth motion（17）, movable plate（14）It is adjacent to baffle（4）When, the first pin（16）It is snapped（17）Clamping, scraper plate（8） Left side on be connected with multiple push rods（18）；Scraper plate（8）When being moved to the left, push rod can be passed through（18）Push buckle（17）, make First pin（16）With buckle（17）It is detached from, and rear push-rod（18）Push movable plate（14）It turns left, makes movable plate（14）To It moves left；Work as scraper plate（8）When being moved to left end, sieve（2）Revolution, and movable plate（14）Spinning reduction, sieve（2）Pulls wire Wheel（11）Revolution.

2. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that be located at sieve（2）Front and back two The baffle of side（4）Middle part be fixedly connected with front-rear direction placement supporting rod（19）, former and later two risers（1）Middle part open Equipped with straight slot（20）, straight slot（20）Interior be equipped with can be along straight slot（20）The sliding block moved left and right, sliding block and straight slot（20）Between connect There are resetting spring, supporting rod（19）It is placed in sliding block and can be rotated along sliding block.

3. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the sieve（2）By upper Lower two layers of composition, between two layers can any angle sliding, and be fixed by tied silk, when upper layer and lower layer sieve（2）For left and right When sliding, upper screen（2）Rear and front end and baffle（4）It is fixedly connected, lower screen（2）Rear and front end and baffle（4） It is slidably connected, lower screen（2）With baffle（4）Between be fixed by screw.

4. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the movable plate（14）'s Lower face and sieve（2）Left end it is hinged, while movable plate（14）Rear and front end be placed in former and later two baffles（4）Outside, Movable plate（14）Having on side for rear and front end have first pin（16）With the first tension spring（15）, the first pin（16） With the first tension spring（15）It is installed in and is located at baffle（4）The movable plate in outside（14）On.

5. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the fixing device is two It is a to be separately fixed at former and later two risers（1）Second pin of right end（10）, the second pin（10）Lower end be equipped with the first driving lever （22）, riser（1）Medial surface be equipped with the second driving lever（23）, the first driving lever（22）With the second driving lever（23）Between be set with ring The belt of shape（24）, the second pin（10）On be set with and can make the second pin（10）The spring moved up.

6. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the sieve（2）The right side End and riser（1）Between be connected with the second tension spring（21）, the second tension spring（21）Installation site and the second pin（10）And it is fixed Position bar（6）The position that is staggeredly located.

7. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the baffle（14）It is outer Side is equipped with multiple and locating rod（6）One-to-one protruding block（25）, locating rod（6）Rear end be placed in protruding block（25）It is interior Portion, locating rod（6）It can be along protruding block（25）It is moved forward and backward, locating rod（6）Rear end and protruding block（25）Between be equipped with reset bullet Spring, locating rod（6）Outer end be orbicule.

8. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the line wheel（11）With it is inclined Heart wheel（13）It is driven by motor, line wheel（11）And eccentric wheel（13）On be set with one-way clutch, and the two institute The direction of the one-way clutch of suit is opposite.

9. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the line wheel（11）With it is inclined Heart wheel（13）It being driven respectively with by two stepper motors, two stepper motors are alternately rotated by controller, while with Line wheel（11）The stepper motor of connection can turn round as needed.

10. a kind of small rotary formula Sand screen according to claim 1, which is characterized in that the buckle（17）Packet Include about two connecting rods being placed in parallel（26）, connecting rod（26）Through baffle（4）And it can be moved forward and backward, connecting rod（26）Both ends position In baffle（4）Front and rear sides, two connecting rods（26）Front-end and back-end between be respectively connected with block（27）, block（27）With gear Plate（4）And upper and lower two connecting rods（26）Form " returning " font；Upper and lower two connecting rods（26）On be set with and can make connecting rod（26）To The spring of interior movement is located at two connecting rods（26）Rear end between block（27）It is equipped with inclined-plane, push rod（18）Left end energy With contact of incline plane, push rod（18）Left end be orbicule, baffle（4）On be fixed with fixed plate（28）, push rod（18）Through fixation Plate（28）And along fixed plate（28）It moves left and right；First pin（16）Right end be equipped with inclined-plane, the first pin（16）Lateral surface It is equipped with the vertical slot being located on the left of inclined-plane（29）, vertical slot（29）Opening is outwardly.