CN106840343B - Weighing and batching system - Google Patents
Weighing and batching system Download PDFInfo
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- CN106840343B CN106840343B CN201710240567.XA CN201710240567A CN106840343B CN 106840343 B CN106840343 B CN 106840343B CN 201710240567 A CN201710240567 A CN 201710240567A CN 106840343 B CN106840343 B CN 106840343B
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- rotary sleeve
- weighing
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- annular boss
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
- G01G19/38—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them programme controlled, e.g. by perforated tape
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
- G01G19/24—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them using a single weighing apparatus
- G01G19/30—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them using a single weighing apparatus having electrical weight-sensitive devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
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- General Physics & Mathematics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
A weighing and proportioning system relates to a proportioning system. The invention aims to solve the problems of lower weighing and proportioning precision and longer weighing and proportioning time consumption in the conventional weighing and proportioning mode. The bottom end of a storage barrel (1) is provided with a discharge port, a flange plate (3) is provided with a discharge hole, the discharge port is communicated with the discharge hole, a multipoint positioning cylinder (5) is arranged above the flange plate (3), a rotating shaft (6) vertically penetrates through the flange plate (3) and is in rotating fit with the flange plate, the top end of the rotating shaft (6) is hinged with one end of a connecting rod (5), the other end of the connecting rod (5) is hinged with a piston rod (8) of the multipoint positioning cylinder (4), the bottom end of the rotating shaft (6) is fixedly connected with a discharge baffle (7), and the upper surface of the discharge baffle (7) is tightly attached to the lower surface of the flange plate (3). According to the invention, the discharge baffle is controlled by the multipoint positioning cylinder, so that the opening of any size of the discharge hole is rapidly realized, and the blanking amount of the storage barrel is controlled. The invention is used for weighing and proportioning materials.
Description
Technical Field
The invention relates to a material weighing and proportioning system, in particular to a weighing and proportioning system with a material quick weighing function.
Background
The material weighing and batching modes in the prior art mainly comprise two modes, wherein one mode is a manual mode for weighing and batching, and the other mode is a screw conveying mode for weighing and batching. The manual weighing and proportioning method is adopted, so that the weighing and proportioning method does not meet the intelligent and unmanned production requirements, the precision is low, and the process is long in time consumption. The weighing and batching are carried out by adopting a screw conveying mode, and the conveying and batching actions of the screw are controlled by weighing signals fed back by the electronic scale, so that the weighing and batching precision is low and the time consumption is long due to the influence of objective factors such as the thread pitch of the screw, and the high-precision quick weighing and batching requirement cannot be met.
In conclusion, the existing weighing and proportioning mode has the problems of low weighing and proportioning precision and long weighing and proportioning time.
Disclosure of Invention
The invention aims to solve the problems of low weighing and proportioning precision and long weighing and proportioning time of the conventional weighing and proportioning mode. Further provides a weighing and proportioning system.
The technical scheme of the invention is as follows: the utility model provides a weigh feed proportioning system includes the dosing unit, the dosing unit includes the storage vat, the upper portion of storage vat is the tube-shape, and the lower part of storage vat is the taper, and the top of storage vat is equipped with the feed inlet, and the bottom of storage vat is equipped with the discharge gate, and the dosing unit still includes ring flange, connecting rod, rotation axis, blowing baffle and multiple spot location cylinder, the blowing hole has been seted up on the ring flange, discharge gate and blowing hole intercommunication, the multiple spot location cylinder is installed the top of ring flange, the rotation axis is vertical to be passed the ring flange and with ring flange normal running fit, the top of rotation axis with the one end of connecting rod is articulated, the other end of connecting rod with the piston rod of multiple spot location cylinder is articulated, the bottom fixed connection of rotation axis the blowing baffle, the upper surface of blowing baffle with the lower surface of ring flange pastes tightly.
Further, the dosing unit still includes rotary sleeve, driven gear, motor, driving gear and broken bridge pole, rotary sleeve is located be equipped with axial material passageway between storage vat and the ring flange, material passageway's upper end with the discharge gate intercommunication, material passageway's lower extreme with the blowing hole intercommunication, the coaxial fixed suit of driven gear is in the outside of rotary sleeve, the bottom fixed connection of broken bridge pole is in on rotary sleeve's the inner wall, broken bridge pole follows the taper inner wall of storage vat is followed the discharge gate slope upwards stretches into in the storage vat, leave the clearance between the taper inner wall of broken bridge pole and storage vat, motor fixed mounting be in the top of ring flange, the power output shaft coaxial coupling of motor the driving gear, the driving gear with driven gear meshes.
Furthermore, the dosing unit still includes transition connection spare, swivel housing shell, swivel housing base and motor housing, transition connection spare is equipped with axial discharge opening, swivel housing shell and swivel housing base cavity and swivel housing base are equipped with axial discharging channel, storage vat, transition connection spare, swivel housing shell, swivel housing base and flange dish from the top down coaxial fixed sealing connection in proper order, the swivel housing shell forms the cavity with the swivel housing base, swivel housing and driven gear are located in the cavity, the top of swivel housing with transition connection spare's bottom butt joint and normal running fit, the bottom of swivel housing with the top butt joint and the normal running fit of the discharging channel of swivel housing base, discharge gate, discharge opening, material passageway, discharging channel, blowing hole all communicate, multiple spot location cylinder articulates on the swivel housing shell, motor fixed mounting is in on the swivel housing shell, motor housing covers on motor and the driving gear, motor housing with the sealed intercommunication of swivel housing shell.
Preferably, the first annular boss that downwards is equipped with on the inner wall at rotary sleeve shell top, upwards be equipped with second annular boss on the inner wall of rotary sleeve base bottom, first annular boss is coaxial with second annular boss, driven gear is located between first annular boss and the second annular boss, and driven gear and first annular boss and the sealed normal running fit of second annular boss, the outer wall of second annular boss is equipped with the disc of outside extension, disc and rotary sleeve shell fixed sealing are connected.
Usually, the rotary sleeve is sealed with the transition connecting piece and the rotary sleeve base by a Gray ring.
Preferably, a gap is reserved between the first annular boss and the rotary sleeve, a through hole penetrating through the first annular boss is formed in the side wall of the second annular boss, and the through hole is communicated with a compressed air source.
Usually, an arc-shaped notch is arranged on one side of the discharge baffle opposite to the opening direction of the discharge baffle.
Preferably, the weighing and batching system further comprises a discharge barrel, a frame, a turnover charging basket and an electronic scale, the batching device is fixedly installed at the top end of the frame, the discharge barrel is installed at the bottom end of the flange plate and communicated with the discharge hole, the electronic scale is installed at the bottom end of the frame, the electronic scale is located under the discharge barrel, the turnover charging basket is provided with a support and is placed on the electronic scale through the support, and a material inlet of the turnover charging basket is aligned with an outlet of the discharge barrel.
Furthermore, the weighing and batching system further comprises a connecting cylinder and a telescopic cylinder, the telescopic cylinder is vertically and fixedly installed at the top of the rack, a piston rod of the telescopic cylinder faces downwards, the bottom end of the piston rod is fixedly connected with the connecting cylinder, and the inner diameter of the connecting cylinder is larger than the outer diameter of the discharge cylinder and smaller than the inner diameter of a material inlet of the turnover charging basket.
Furthermore, the weighing and batching system further comprises a sealing cover and an annular air passing plate, wherein the sealing cover is in a secondary step shape, the sealing cover is coaxially and fixedly sleeved on the outer side of the connecting cylinder, the horizontal plane of the bottom end of the sealing cover is lower than the horizontal plane of the bottom end of the connecting cylinder, the outer diameter of a material inlet of the turnover charging basket is smaller than the inner diameter of a primary step of the sealing cover, the annular air passing plate is detachably arranged between the connecting cylinder and the side wall of the secondary step of the sealing cover, an annular cavity is formed between the connecting cylinder and the secondary step of the sealing cover, through holes which penetrate through the annular air passing plate up and down are uniformly distributed along the same circumference, and the annular cavity is communicated with an air suction pipe.
Compared with the prior art, the invention has the following effects:
1. the invention can quickly realize the opening of any size of the discharge hole by controlling the discharge baffle through the multipoint positioning cylinder, thereby controlling the blanking amount of the storage barrel, controlling the stroke of the multipoint positioning cylinder through the weighing signal fed back by the electronic scale, thereby quickly and accurately completing the weighing and batching work of materials, setting the control program of the multipoint positioning cylinder through the weighing signal, controlling the discharge baffle to act through the multipoint positioning cylinder at the initial stage of batching, so that the discharge hole is completely opened, quickly discharging, controlling the multipoint positioning cylinder to act to close the discharge hole through the feedback signal of the electronic scale when the emptying amount is close to the required batching amount, then performing emptying compensation action, enabling the small area of the discharge hole to be opened and closed once through each emptying compensation action, the emptying amount to be fixed, enabling the emptying amount to reach the required batching amount through a plurality of emptying compensation actions, ending the emptying compensation action, normally, adopting two-stage emptying compensation actions in the primary weighing batching process, enabling the emptying amount to be very small and far lower than that of the primary emptying compensation action, enabling the total emptying amount to approach to the batching requirement to be close to the batching amount through the first-stage emptying compensation action, further achieving the batching error of the second-stage batching operation of 50 Kg, thereby quickly completing the weighing operation, and achieving the batching error of the weighing under the weighing operation of materials not more than the requirement of 100 Kg;
2. the rotary sleeve, the bridge breaking rod and the driving device of the rotary sleeve are arranged, so that the bridge breaking rod can be driven by the rotation of the rotary sleeve to rotate and dial materials in the storage barrel in the weighing and proportioning process, and the materials are effectively prevented from caking and bridging in the blanking process;
3. the rotary sleeve, the transition connecting piece and the rotary sleeve base are sealed by the aid of the GREEN ring, abrasion between contact surfaces rotating relatively can be compensated at any time, and materials are prevented from leaking from the contact surfaces rotating relatively in the blanking process;
4. the arrangement of the gaps among the first annular boss, the second annular boss and the rotary sleeve and the arrangement of the through hole on the side wall of the second annular boss can lead compressed air into the gaps among the first annular boss, the second annular boss and the rotary sleeve through the through hole in the blanking process of the system, so that air seal is formed at the butt joint between the rotary sleeve and the transition connecting piece as well as the rotary sleeve base, and further the material is prevented from leaking from the butt joint in the blanking process;
5. the arc-shaped notch on the discharging baffle plate enables the discharging hole to form a material channel similar to an ellipse even if the discharging hole is opened in a micro mode, so that small and trace material blanking is realized, accurate batching is facilitated, and compared with other discharging baffle plates with edge shapes, the situation that the discharging hole is opened in a micro mode and cannot be blanked, and the situation that the discharging hole cannot be controlled when the discharging hole is opened in a large mode can be effectively avoided;
6. the connecting cylinder and the telescopic cylinder are arranged, so that the upper end of the connecting cylinder is sleeved on the outer side of the discharge cylinder through the telescopic action of the telescopic cylinder, and the bottom end of the connecting cylinder extends into the inner side of a material inlet of the turnover charging basket, thereby being beneficial to the smooth falling of materials into the turnover charging basket;
7. the setting of sealed lid can tentatively avoid the blanking in-process material to waft from the material import department of turnover storage bucket, the setting of annular space and exhaust tube, at the blanking in-process, can communicate negative pressure source through the exhaust tube, make the annular space be in negative pressure state, the through-hole on the annular space crosses the air plate is inwards bled through the annular, thereby gap department between the import of turnover storage bucket and sealed lid and gap department between feed cylinder and the connecting cylinder form the air current from the extroversion, further guarantee at the blanking in-process, the material can not waft to external operational environment from these two gaps.
Drawings
FIG. 1 is a cross-sectional view of a dispensing unit of the present invention;
FIG. 2 is a perspective view of the dispensing unit of the present invention;
FIG. 3 is a top view of the dispensing unit of the present invention;
FIG. 4 is a bottom view of the dispensing unit of the present invention;
FIG. 5 is a schematic structural view of a discharge baffle of the present invention;
FIG. 6 is a cross-sectional view of the present invention;
FIG. 7 is a perspective view of the connector barrel and sealing cap of the present invention;
figure 8 is a cross-sectional view of a connector barrel and seal cap of the present invention.
Detailed Description
The first embodiment is as follows: combine fig. 1, fig. 2 and fig. 4 to explain this embodiment, this embodiment includes the dosing unit, the dosing unit includes storage vat 1, the upper portion of storage vat 1 is the tube-shape, and the lower part of storage vat 1 is the taper, is convenient for the material at its inside whereabouts, and the top of storage vat 1 is equipped with feed inlet 2, and the bottom of storage vat 1 is equipped with the discharge gate, and it still includes ring flange 3, connecting rod 5, rotation axis 6, blowing baffle 7 and multiple spot location cylinder 4, the blowing hole has been seted up on the ring flange 3, the discharge gate communicates with the blowing hole, multiple spot location cylinder 4 is installed the top of ring flange 3, rotation axis 6 is vertical to be passed ring flange 3 and with ring flange 3 normal running fit, the top of rotation axis 6 with the one end of connecting rod 5 is articulated, the other end of connecting rod 5 with the piston rod 8 of multiple spot location cylinder 4 is articulated, the bottom fixed connection of rotation axis 6 blowing baffle 7, the upper surface of blowing baffle 7 with the lower surface of ring flange 3 pastes tightly.
In the embodiment, the discharge baffle can be controlled to rotate through the action of the piston rod of the multipoint positioning cylinder, so that the opening and closing of the discharge hole are realized. Under the general condition, the rotation axis is equipped with location structure from top to bottom to make it can only realize rotating, can not reciprocate, avoid causing the condition emergence that the material revealed because its reciprocates to cause the blowing baffle can not paste tightly with the lower surface of ring flange. In the actual use process, the feed inlet can be connected with a vacuum feeding mechanism and used for feeding of the storage vat, the top end of the storage vat can also be provided with an exhaust port, and a filtering device is usually installed at the exhaust port inside the storage vat.
This embodiment is through the control of multiple spot location cylinder to the blowing baffle, can realize the opening of the arbitrary size of blowing hole fast, thereby the blanking volume of control storage vat, the stroke of multiple spot location cylinder is controlled through the weighing signal of electronic scale feedback, thereby accomplish the weighing batching work of material fast accurately, set up through the control procedure of weighing signal to multiple spot location cylinder, can control the blowing baffle action through multiple spot location cylinder at the batching initial stage, make the blowing hole open completely, quick blowing, when the blowing volume is close to required batching volume, control the multiple spot location cylinder action through the feedback signal of electronic scale and make the blowing hole close, then carry out the blowing compensation action, the blowing compensation action makes the blowing hole small area open and close once every time, the blowing volume is fixed, through many times blowing compensation action, make the blowing volume reach required batching volume, the blowing compensation action finishes, under the usual condition, in once weigh the batching in-process, adopt two-stage blowing compensation action, the blowing volume of second-stage blowing compensation action is very little, far below the blowing volume of one-stage compensation action, make the blowing volume further approach to the batching volume, the weighing error does not exceed the weighing requirement, thereby the material does not exceed the weighing error of the weighing requirement under the general weighing condition.
The second embodiment is as follows: the embodiment is described by referring to fig. 1 to fig. 3, the batching device of the embodiment further includes a rotary sleeve 9, a driven gear 10, a motor 11, a driving gear 12 and a bridge breaking rod 13, the rotary sleeve 9 is located between the storage barrel 1 and the flange plate 3 and is provided with an axial material channel, the upper end of the material channel is communicated with the discharge port, the lower end of the material channel is communicated with the discharge hole, the driven gear 10 is coaxially and fixedly sleeved outside the rotary sleeve 9, the bottom end of the bridge breaking rod 13 is fixedly connected to the inner wall of the rotary sleeve 9, the bridge breaking rod 13 is extended into the storage barrel 1 along the conical inner wall of the storage barrel 1 from the discharge port in an inclined and upward manner, a gap is left between the bridge breaking rod 13 and the conical inner wall of the storage barrel 1, the motor 11 is fixedly installed above the flange plate 3, a power output shaft of the motor 11 is coaxially connected to the driving gear 12, and the driving gear 12 is engaged with the driven gear 10.
The gap between the bridge-breaking rod and the tapered inner wall of the storage vat of this embodiment is typically 1-5mm, such as 1mm, 3mm or 5mm. In the embodiment, the motor can control the rotating sleeve to rotate, so that the bridge breaking rod is driven to rotate in the storage barrel.
The rotary sleeve, the bridge breaking rod and the driving device of the rotary sleeve are arranged, so that the bridge breaking rod can be driven to rotate in the storage vat to pull materials in the weighing and batching process through the rotation of the rotary sleeve, and the materials are effectively prevented from caking and bridging in the blanking process. Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: this embodiment is illustrated in combination with fig. 1, and the dosing unit of this embodiment further includes transition connection piece 14, swivel housing shell 15, swivel housing base 16 and motor housing 17, transition connection piece 14 is equipped with axial discharge opening, swivel housing shell 15 and the hollow of swivel housing base 16 and swivel housing base 16 are equipped with axial discharging channel, storage vat 1, transition connection piece 14, swivel housing shell 15, swivel housing base 16 and flange dish 3 from the top down coaxial fixed sealing connection in proper order, swivel housing shell 15 forms the cavity with swivel housing base 16, swivel housing 9 and driven gear 10 are located in the cavity, the top of swivel housing 9 with the bottom butt joint and the normal running fit of transition connection piece 14, the bottom of swivel housing 9 with the top butt joint and the normal running fit of the discharging channel of swivel housing base 16, discharge gate, discharge opening, discharge passage, discharge opening all communicate, multiple spot location cylinder 4 articulates on swivel housing shell 15, motor 11 fixed mounting is in on swivel housing shell 15, motor housing 17 covers on motor housing 11 and motor housing 12 and the sealed driving gear communicates with motor housing 15. So set up, be convenient for guarantee whole feed proportioning system safe and orderly's operation. Other components and connection relationships are the same as in the first or second embodiment.
The fourth concrete implementation mode: explaining this embodiment with reference to fig. 1, a first annular boss 18 is provided downward on the inner wall at the top of the rotary sleeve housing 15 of this embodiment, a second annular boss 19 is provided upward on the inner wall at the bottom of the rotary sleeve base 16, the first annular boss 18 is coaxial with the second annular boss 19, the driven gear 10 is located between the first annular boss 18 and the second annular boss 19, the driven gear 10 is in sealed rotation fit with the first annular boss 18 and the second annular boss 19, a disk extending outward is provided on the outer wall of the second annular boss 19, and the disk is fixedly and hermetically connected with the rotary sleeve housing 15. The seal of the present embodiment may be made of a tetrafluoro material, or may be made of another material. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode: referring to fig. 1, the rotary sleeve 9 of the present embodiment is sealed with the transition piece 14 and the rotary sleeve base 16 by using the gray ring 20. So set up, the glary circle can carry out clearance compensation to the wearing and tearing between the relative pivoted contact surface at any time, prevents that the material from leaking outward from relative pivoted contact surface in the blanking process. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.
The sixth specific implementation mode: referring to fig. 1, in the present embodiment, gaps are left between the first annular boss 18 and the second annular boss 19 and the rotary sleeve 9, a first through hole 21 is formed in a side wall of the second annular boss 19, and the first through hole 21 is communicated with a compressed air source. The setting in the clearance between first annular boss, second annular boss and the rotary sleeve of this embodiment to and the setting of through-hole on the lateral wall of second annular boss, at the blanking in-process of system, can let in compressed air in the clearance between first annular boss, second annular boss and the rotary sleeve through the through-hole, thereby form airtight in the butt joint department between rotary sleeve and transition piece and rotary sleeve base, further guarantee that blanking in-process material can not leak outward from the butt joint department. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
The seventh embodiment: referring to fig. 4 and 5, the discharging baffle 7 of the present embodiment is provided with an arc-shaped notch 22 on the side opposite to the opening direction. So set up, even make the blowing hole open a little, also can form similar to oval-shaped material passageway between the inner wall in curved opening and blowing hole, realize the material blanking of small, trace to be favorable to accurate batching, compare in the blowing baffle of other edge shapes, can effectively avoid the blowing hole to open a little not blanking, opened the condition emergence that the blanking volume can't be controlled again greatly. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.
The specific implementation mode is eight: the embodiment is described with reference to fig. 6, and further includes a discharging barrel 23, a frame 24, a revolving charging basket 25 and an electronic scale 26, wherein the batching device is fixedly mounted at the top end of the frame 24, the discharging barrel 23 is mounted at the bottom end of the flange 3 and is communicated with the discharging hole, the electronic scale 26 is mounted at the bottom end of the frame 24, the electronic scale 26 is located right below the discharging barrel 23, the revolving charging basket 25 is provided with a support and is placed on the electronic scale 26 through the support, and a material inlet of the revolving charging basket 25 is aligned with an outlet of the discharging barrel 23.
The material inlet of the turnover storage bucket of this embodiment aligns the export of play feed cylinder is convenient for follow the blanking of storage vat can accurately fall into the turnover storage bucket. In general, a suitable control system and a suitable control program can be configured to control the action of the discharge baffle (realized by controlling a piston rod of the multi-point positioning cylinder) through the weighing result of the electronic scale so as to control the opening and closing of the discharge hole. Other compositions and connection relationships are the same as those of embodiment one, two, three, four, five, six or seven.
The specific implementation method nine: the embodiment is described with reference to fig. 6, and further includes a connecting cylinder 27 and a telescopic cylinder 28, the telescopic cylinder 28 is vertically and fixedly mounted on the top of the frame 24, a piston rod of the telescopic cylinder is downward, a bottom end of the piston rod is fixedly connected to the connecting cylinder 27, and an inner diameter of the connecting cylinder 27 is larger than an outer diameter of the discharging cylinder 23 and smaller than an inner diameter of a material inlet of the revolving charging bucket 25. So set up, can make the upper end cover of connecting cylinder in the outside of play feed cylinder through telescopic cylinder's flexible action, the inboard of the material import of turnover storage bucket is stretched into to the bottom of connecting cylinder, is favorable to the material to fall into the turnover storage bucket smoothly. Other compositions and connection relationships are the same as those in the first, second, third, fourth, fifth, sixth, seventh or eighth embodiment.
The detailed implementation mode is ten: the present embodiment is described with reference to fig. 6, fig. 7 and fig. 8, the present embodiment further includes a sealing cover 29 and an annular air passing plate 30, the sealing cover 29 is in a cylindrical shape with two steps, the sealing cover 29 is coaxially and fixedly sleeved outside the connecting cylinder 27, a horizontal plane of a bottom end of the sealing cover 29 is lower than a horizontal plane of a bottom end of the connecting cylinder 27, an outer diameter of a material inlet of the turnover charging basket 25 is smaller than an inner diameter of a first step of the sealing cover 29, the annular air passing plate 30 is detachably mounted between the connecting cylinder 27 and a side wall of the second step of the sealing cover 29, so that an annular cavity is formed between the connecting cylinder 27 and the second step of the sealing cover 29, second through holes 31 penetrating up and down are uniformly distributed on the annular air passing plate 30 along the same circumference, and the annular cavity is communicated with an air suction pipe 32. Usually, the bottom end of the piston rod is indirectly and fixedly connected with the connecting cylinder in a manner of being fixedly connected with the sealing cover. Other compositions and connection relationships are the same as those of embodiment one, two, three, four, five, six, seven, eight or nine.
The sealed setting of lid of this embodiment can tentatively avoid blanking in-process material to waft from the import department of turnover storage bucket, the annular board of crossing wind, the setting of annular chamber and exhaust tube, in the blanking in-process, can communicate the negative pressure source through the exhaust tube, make the annular chamber be in negative pressure state, the annular chamber is inwards bled through the through-hole on the annular board of crossing wind, thereby gap department between the material import of turnover storage bucket and sealed lid and gap department between play feed cylinder and the connecting cylinder form the air current from the extroversion-in, further guarantee at the blanking in-process, the material can not waft to external operational environment from these two gaps.
The working principle and the process of the invention are as follows:
the material is conveyed into the storage barrel through a vacuum feeding system, the turnover charging basket is placed on an electronic scale, the up-and-down motion of a connecting cylinder and a sealing cover which are integrated into a whole is controlled through a telescopic cylinder, the upper end of the connecting cylinder is sleeved outside a discharging cylinder, the lower end of the connecting cylinder is inserted into a material inlet of the turnover charging basket, the side wall of a first-stage step of the sealing cover is sleeved outside the material inlet of the turnover charging basket, a gap is reserved between the upper end of the material inlet of the turnover charging basket and the upper wall of the first-stage step of the sealing cover and an annular air passing plate, the motion of a discharging baffle is controlled through the motion of a piston rod of a multipoint positioning cylinder to completely open a discharging hole, the charging is rapidly performed, when the charging quantity is close to the required charging quantity, the charging hole is closed through the feedback signal of the electronic scale, then the charging compensation motion is performed, the small-area of the discharging hole is opened and closed once each time through the charging compensation motion, the charging quantity is fixed through the multiple charging compensation motions, the charging quantity reaches the required charging compensation motion, the charging compensation motion is ended, and the charging compensation quantity is further close to the primary charging compensation quantity when the primary charging compensation quantity is close to the secondary charging quantity. In the whole discharging process, the motor is used for controlling the rotary sleeve to drive the bridge breaking rod to rotate to pull materials, so that the materials are prevented from caking and bridging in the discharging process. In the whole discharging process, a compressed air source communicated with the through hole in the side wall of the second annular boss and a negative pressure source communicated with the exhaust pipe are opened, and air sealing is formed at the gap between the rotary sleeve and the transition connecting piece as well as the base of the rotary sleeve, the gap between the inlet of the turnover charging basket and the sealing cover and the gap between the discharging barrel and the connecting barrel respectively, so that materials are prevented from leaking or floating out everywhere in the discharging process.
In the practical application process, one turnover charging basket can be matched with a plurality of batching devices (materials in the storage barrel of each batching device are different), so that the mixed weighing and batching of a plurality of materials can be realized rapidly, and the turnover charging basket can be transferred among the batching devices through a movable trolley.
Claims (8)
1. The utility model provides a weigh feed proportioning system, it includes dosing unit, dosing unit includes storage vat (1), the upper portion of storage vat (1) is the tube-shape, and the lower part of storage vat (1) is the taper, and the top of storage vat (1) is equipped with feed inlet (2), and the bottom of storage vat (1) is equipped with discharge gate, its characterized in that: the batching device further comprises a flange plate (3), a connecting rod (5), a rotating shaft (6), a discharging baffle (7) and a multipoint positioning cylinder (4), wherein a discharging hole is formed in the flange plate (3), the discharging hole is communicated with the discharging hole, the multipoint positioning cylinder (4) is installed above the flange plate (3), the rotating shaft (6) vertically penetrates through the flange plate (3) and is in running fit with the flange plate (3), the top end of the rotating shaft (6) is hinged with one end of the connecting rod (5), the other end of the connecting rod (5) is hinged with a piston rod (8) of the multipoint positioning cylinder (4), the bottom end of the rotating shaft (6) is fixedly connected with the discharging baffle (7), and the upper surface of the discharging baffle (7) is tightly attached to the lower surface of the flange plate (3);
the batching device further comprises a rotary sleeve (9), a driven gear (10), a motor (11), a driving gear (12) and a bridge breaking rod (13), wherein the rotary sleeve (9) is positioned between the storage barrel (1) and the flange plate (3) and is provided with an axial material channel, the upper end of the material channel is communicated with the discharge port, the lower end of the material channel is communicated with the discharge hole, the driven gear (10) is coaxially and fixedly sleeved on the outer side of the rotary sleeve (9), the bottom end of the bridge breaking rod (13) is fixedly connected to the inner wall of the rotary sleeve (9), the bridge breaking rod (13) obliquely and upwards extends into the storage barrel (1) from the discharge port along the conical inner wall of the storage barrel (1), a gap is reserved between the bridge breaking rod (13) and the conical inner wall of the storage barrel (1), the motor (11) is fixedly installed above the flange plate (3), a power output shaft of the motor (11) is coaxially connected with the driving gear (12), and the driving gear (12) is meshed with the driven gear (10);
the batching device also comprises a transition connecting piece (14), a rotary sleeve shell (15), a rotary sleeve base (16) and a motor shell (17), the transition connecting piece (14) is provided with an axial discharge hole, the rotary sleeve shell (15) and the rotary sleeve base (16) are hollow, the rotary sleeve base (16) is provided with an axial discharge channel, the storage vat (1), the transition connecting piece (14), the rotary sleeve shell (15), the rotary sleeve base (16) and the flange plate (3) are coaxially and fixedly connected in a sealing way from top to bottom in sequence, the rotary sleeve shell (15) and the rotary sleeve base (16) form a hollow cavity, the rotating sleeve (9) and the driven gear (10) are positioned in the hollow cavity, the top end of the rotary sleeve (9) is butted with and rotationally matched with the bottom end of the transition connecting piece (14), the bottom end of the rotary sleeve (9) is butted and rotationally matched with the top end of a discharge channel of the rotary sleeve base (16), the discharge hole, the material channel, the discharge channel and the discharge hole are all communicated, the multipoint positioning cylinder (4) is hinged on the rotary sleeve shell (15), the motor (11) is fixedly arranged on the rotary sleeve shell (15), the motor shell (17) covers the motor (11) and the driving gear (12), the motor shell (17) is communicated with the rotary sleeve shell (15) in a sealing mode.
2. A weighing and proportioning system according to claim 1 wherein: first annular boss (18) that downwards are equipped with on the inner wall at rotary sleeve shell (15) top, upwards be equipped with second annular boss (19) on the inner wall of rotary sleeve base (16) bottom, first annular boss (18) are coaxial with second annular boss (19), driven gear (10) are located between first annular boss (18) and second annular boss (19), and driven gear (10) and first annular boss (18) and second annular boss (19) sealed normal running fit, the outer wall of second annular boss (19) is equipped with the disc of outside extension, disc and rotary sleeve shell (15) fixed seal are connected.
3. A weighing and proportioning system according to claim 2 wherein: the rotary sleeve (9), the transition connecting piece (14) and the rotary sleeve base (16) are sealed by a Gray ring (20).
4. A weighing and proportioning system according to claim 3 wherein: gaps are reserved among the first annular boss (18), the second annular boss (19) and the rotary sleeve (9), a first through hole (21) which penetrates through the first annular boss is formed in the side wall of the second annular boss (19), and the first through hole (21) is communicated with a compressed air source.
5. A weighing and proportioning system according to claim 1 wherein: an arc-shaped notch (22) is arranged on one side of the discharging baffle (7) opposite to the opening direction of the discharging baffle.
6. A weighing and proportioning system according to claim 1, 2, 3, 4 or 5 wherein: the automatic feeding device is characterized by further comprising a discharge barrel (23), a rack (24), a turnover charging basket (25) and an electronic scale (26), wherein the batching device is fixedly installed at the top end of the rack (24), the discharge barrel (23) is installed at the bottom end of the flange plate (3) and communicated with the discharging hole, the electronic scale (26) is installed at the bottom end of the rack (24), the electronic scale (26) is located under the discharge barrel (23), the turnover charging basket (25) is provided with a support and is placed on the electronic scale (26) through the support, and a material inlet of the turnover charging basket (25) is aligned with an outlet of the discharge barrel (23).
7. A weighing and proportioning system according to claim 6 wherein: it still includes connecting cylinder (27) and telescopic cylinder (28), the vertical fixed mounting of telescopic cylinder (28) is in the top of frame (24) and its piston rod are downward, bottom fixed connection connecting cylinder (27) of piston rod, the internal diameter of connecting cylinder (27) is greater than the external diameter of play feed cylinder (23) is less than the internal diameter of the material import of turnover storage bucket (25).
8. A weighing and batching system as in claim 7, wherein: it still includes sealed lid (29) and annular air passing plate (30), sealed lid (29) are the tube-shape of second grade step, and the outside at connecting cylinder (27) is fixed adorned to sealed lid (29) coaxial cover, the horizontal plane that the bottom of sealed lid (29) was located is less than the horizontal plane that the bottom of connecting cylinder (27) was located, and the external diameter of turnover storage bucket (25) material import is less than the internal diameter of the one-level step of sealed lid (29), annular air passing plate (30) detachably installs between the lateral wall of the second grade step of connecting cylinder (27) and sealed lid (29), makes and forms the annular chamber between the second grade step of connecting cylinder (27) and sealed lid (29), it has second through-hole (31) that run through from top to bottom to go up along same circumference evenly distributed in annular air passing plate (30), the annular chamber intercommunication has exhaust tube (32).
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| CN201710240567.XA CN106840343B (en) | 2017-04-13 | 2017-04-13 | Weighing and batching system |
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| CN111854900B (en) * | 2019-04-29 | 2021-09-24 | 河南省计量科学研究院 | Batching weighing metering device |
| CN110220581A (en) * | 2019-05-17 | 2019-09-10 | 高邮市宇航化工机械厂 | A kind of bio-pharmaceuticals high-precision raw material weighing-appliance and method |
| WO2022006712A1 (en) * | 2020-07-06 | 2022-01-13 | 河南丰博自动化有限公司 | Coriolis scale and measuring method |
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