CN212409839U - Weight-reducing scale - Google Patents
Weight-reducing scale Download PDFInfo
- Publication number
- CN212409839U CN212409839U CN202020559231.7U CN202020559231U CN212409839U CN 212409839 U CN212409839 U CN 212409839U CN 202020559231 U CN202020559231 U CN 202020559231U CN 212409839 U CN212409839 U CN 212409839U
- Authority
- CN
- China
- Prior art keywords
- discharging
- weighing hopper
- scale
- baffle
- decrement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of material weighing, in particular to a weight reducing scale, which comprises a stock bin, a feeding mechanism, a weighing hopper, a discharging mechanism and a discharging adjusting mechanism; the weighing hopper is positioned below the stock bin and is connected with the stock bin through the feeding mechanism; the discharging mechanism is arranged at the bottom of the weighing hopper; the discharging adjusting mechanism is arranged at a discharging opening of the discharging mechanism; the discharging adjusting mechanism comprises a fixing piece, a connecting column and a baffle; the mounting is fixed discharge mechanism is last, the center of mounting has the through-hole, the one end of spliced pole is passed through the through-hole with the mounting is connected, the other end of spliced pole penetrates the center of baffle, baffle movable with the spliced pole is connected. The utility model discloses an adjusting the position of adjusting the baffle on the spliced pole, realized the adjustment to the discharge gate size to adapt to the powder of different density, thereby guaranteed that the unloading volume is stable, improved the batching precision.
Description
Technical Field
The utility model relates to a title material technical field especially relates to decrement balance.
Background
The pellet production needs to utilize various powder materials, such as bentonite, limestone powder, fly ash and anthracite powder. The powder has fine granularity, and is easy to generate dust, thereby polluting the environment. Therefore, a totally enclosed addition mode is generally adopted, such as a pneumatic filling proportioning bin and a screw feeder. Meanwhile, different powder materials have different densities (namely different bulk densities), and the density of the bentonite is 0.8t/m3The density of the limestone powder is 1.8t/m3The density of the fly ash is 2.0t/m3The density of the anthracite powder is 0.6t/m3。
Powder is often weighed in a batching system using a loss-in-weight scale. The principle of the weight-reducing scale is as follows: when the equipment is operated, the screw rod rotates, and the material is discharged from the metering hopper. The weighing instrument continuously and dynamically detects the weight of the material in the weighing hopper, and the actual feeding amount is obtained by collecting the reduction of the weight in unit time. And then comparing with the set feeding amount to obtain an error value. And then the rotating speed of the feeding motor is adjusted in a variable frequency mode through a PID closed-loop control algorithm, so that the feeding flow is kept stable and consistent all the time. When the weight of the material in the weighing hopper reaches the weight lower limit set value of the weighing instrument, the weighing instrument sends out an automatic material supplementing signal to inform the upper storage hopper of rapid material supplementing, and the rotating speed of the screw rod is fixed at a rotating speed without PID adjustment. And when the weight of the material in the measuring hopper reaches the weight upper limit set value of the weighing instrument, closing the material supplementing signal and recovering PID regulation control again.
The existing decrement scale is poor in applicability and difficult to adapt to different powder materials, especially the decrement scale aiming at low-density powder materials is not suitable for proportioning the high-density powder materials, if the decrement scale aiming at the low-density powder materials is adopted for proportioning the high-density powder materials, the problems of unstable blanking and low proportioning precision can be caused, and even if the lowest rotating speed is adopted, the lowest feeding amount is still higher than the feeding amount required by the process.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been developed to provide a weight reducing scale that overcomes, or at least partially solves, the above-mentioned problems.
The utility model provides a decrement scale, which comprises a stock bin, a feeding mechanism, a weighing hopper, a discharging mechanism and a discharging adjusting mechanism;
the weighing hopper is positioned below the stock bin and is connected with the stock bin through the feeding mechanism;
the discharging mechanism is arranged at the bottom of the weighing hopper;
the discharging adjusting mechanism is arranged at a discharging opening of the discharging mechanism;
the discharging adjusting mechanism comprises a fixing piece, a connecting column and a baffle;
the mounting is fixed discharge mechanism is last, the center of mounting has the through-hole, the one end of spliced pole is passed through the through-hole with the mounting is connected, the other end of spliced pole penetrates the center of baffle, baffle movable with the spliced pole is connected.
Preferably, the feeding mechanism is a pneumatic butterfly valve or a vane feeder.
Preferably, the feeding mechanism is in flexible connection with the weighing hopper.
Preferably, the upper part of the weighing hopper is provided with an exhaust hole.
Preferably, the discharging mechanism comprises a discharging screw and a motor;
the motor is connected with the discharging screw;
the discharge port is arranged at the bottom of the discharge spiral.
Preferably, the fixing member comprises a connecting ring and a plurality of connecting arms;
the connecting arms are encircled around the connecting circular ring, one end of each connecting arm is connected with the connecting circular ring, and the other end of each connecting arm is connected with the discharging mechanism.
Preferably, the connecting column is a connecting bolt.
Preferably, the device further comprises a nut;
the nut sets up on the spliced pole, just, the nut is located the below of baffle.
Preferably, the device also comprises a load sensor, a controller, an actuating mechanism and a frequency converter;
the load sensor is arranged on the weighing hopper;
the controller is connected with the load sensor;
the controller is also connected with the feeding mechanism through the execution mechanism;
the controller is also connected with the motor through the frequency converter.
Preferably, the weight-reducing scale comprises a plurality of load sensors, and the load sensors are symmetrically distributed on the weighing hoppers.
The utility model discloses a decrement balance, include feed bin, feed mechanism, weigh fill, discharge mechanism and ejection of compact adjustment mechanism. The weighing hopper is positioned below the stock bin and is connected with the stock bin through the feeding mechanism. The discharging mechanism is arranged at the bottom of the weighing hopper. The discharging adjusting mechanism is arranged at the discharging opening of the discharging mechanism. The discharging adjusting mechanism comprises a fixing piece, a connecting column and a baffle. The mounting is fixed on discharge mechanism, and the center of mounting has the through-hole, and the one end of spliced pole is passed through the through-hole and is connected with the mounting, and the other end of spliced pole penetrates the center of baffle, and baffle movable type is connected with the spliced pole. The utility model discloses an adjusting the position of adjusting the baffle on the spliced pole, realized the adjustment to the discharge gate size to adapt to the powder of different density, thereby guaranteed that the unloading volume is stable, improved the batching precision.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a structure diagram of a weight-reducing scale according to an embodiment of the present invention.
Fig. 2 shows a cross-sectional view of the discharge adjustment mechanism in an embodiment of the present invention.
Fig. 3 shows a top view of a fixing member in an embodiment of the present invention.
Fig. 4 shows a structure diagram of a baffle plate in an embodiment of the present invention.
Wherein, 1 is the feed bin, 2 is feed mechanism, 3 is weighing hopper, 4 is ejection of compact spiral, 5 is the motor, 6 is the discharge gate, 7 is the exhaust hole, 8 is the load sensor, 9 is the mounting, 10 is the baffle, 11 is the nut, 12 is the spliced pole, 92 is the connection ring, 91 is the linking arm.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the utility model provides a decrement balance, as shown in fig. 1-3, this decrement balance includes feed bin 1, feed mechanism 2, the fill 3 of weighing, discharge mechanism and ejection of compact adjustment mechanism.
The embodiment of the utility model provides an in, the fill 3 of weighing is located the below of feed bin 1, and the fill 3 of weighing is connected with feed bin 1 through feed mechanism 2. The feeding mechanism 2 is a pneumatic butterfly valve or an impeller feeder. The feeding mechanism 2 and the weighing hopper 3 are in flexible connection, the feeding mechanism 2 can be buffered by the flexible connection, and the problems that the feeding is unstable and the batching precision is low due to the fact that the weighing hopper 3 vibrates are avoided. Further, the upper portion of the weighing hopper 3 is provided with the exhaust holes 7, powder in the weighing hopper 3 is continuously reduced in the blanking process, and the weighing hopper 3 is of a closed structure, so that the pressure inside and outside the weighing hopper 3 can be unbalanced, and the pressure inside and outside the weighing hopper 3 can be balanced through the exhaust holes 7.
Further, the discharging mechanism is arranged at the bottom of the weighing hopper 3. The discharging mechanism comprises a discharging spiral 4 and a motor 5, the motor 5 is connected with the discharging spiral 4, and a discharging hole 6 is formed in the bottom of the discharging spiral 4. The discharging adjusting mechanism is arranged at the discharging port 6 of the discharging mechanism.
The discharge regulating mechanism is explained in detail below:
as shown in fig. 2-4, the outfeed adjustment mechanism includes a fixture 9, a connecting column 12, and a baffle 10. The fixing part 9 is used for fixing the discharging adjusting mechanism on the discharging mechanism. The fixing piece 9 is fixed on the discharging mechanism, and the baffle 10 is connected with the fixing piece 9 through a connecting column 12. Specifically, the center of the fixing part 9 is provided with a through hole, one end of the connecting column 12 is connected with the fixing part 9 through the through hole, the other end of the connecting column 12 penetrates into the center of the baffle 10, and the baffle 10 is movably connected with the connecting column 12.
Further, as shown in fig. 3, the fixing member 9 includes a connecting ring 92 and a plurality of connecting arms 91, and the connecting ring 92 has a through hole in the middle. A plurality of connecting arms 91 are wrapped around the connecting ring 92. To every linking arm 91, the one end of linking arm 91 is connected with being connected ring 92, and the other end of linking arm 91 is connected with the belt of ejection of compact spiral 4 among the discharge mechanism, and for improving connection stability, this application has set up a plurality of linking arms 91.
Further, the connecting column 12 is a connecting bolt. One end of the connecting bolt is connected to the fixing member 9 by passing the connecting bolt through the through-hole of the connecting ring 92. Thereafter, the coupling bolt is inserted through the center of the barrier 10, so that the other end of the coupling bolt is coupled to the barrier 10. To adapt to the shape of spout 6, baffle 10 may be circular in shape, as shown in fig. 4.
Further, the baffle 10 is movably connected to the connecting bolt, and specifically, can be implemented by a nut 11. That is, the nut 11 is provided on the connecting bolt, and the nut 11 is provided below the baffle plate 10. The retainer 10 is engaged by a nut 11. After the shutter 10 is moved to different height positions along the connecting bolt, the shutter 10 can be engaged at the corresponding position by rotating the nut 11 to the corresponding position.
The utility model discloses an adjusting the position of baffle 10 on spliced pole 12 has realized the adjustment to 6 sizes of discharge gate to adapt to the powder of different density. The blanking quantity is ensured to be stable, and the batching precision is improved.
Furthermore, in order to realize the PID automatic control of the discharge amount, as shown in fig. 1, the weight reducing scale of the present invention further comprises a load sensor 8, a controller, an actuator and a frequency converter. The load sensor 8 is arranged on the weighing hopper 3, and the load sensor 8 is used for detecting the weight of the weighing hopper 3. In order to improve the measurement accuracy, a plurality of load sensors 8 may be provided, and the plurality of load sensors 8 are symmetrically distributed on the weighing hopper 3. Further, the controller is connected with a load sensor 8, and a weight signal measured by the load sensor 8 is sent to the controller. The controller may be implemented using a PLC. Further, the controller calculates a flow control signal and a feeding signal according to the weight signal, sends the flow control signal to the frequency converter, and controls the rotating speed of the motor 5 by using the frequency converter. At the same time, the feeding information is sent to the actuator, which controls the feeding mechanism 2.
It should be noted that, due to the difference in powder density, the feeding amount per unit time of the screw feeder with the same specification will be different, and the feeding capacity is generally proportional to the density. Therefore, the decrement scale suitable for the low-density powder is difficult to adapt to the high-density powder, and even if the lowest rotating speed of the screw feeder is adopted, the lowest feeding amount is still higher than the feeding amount required by the process. The following are several performance parameters of the decrement weigher for different powders:
and (4) bentonite decrement weighing:
name of material: and (4) bentonite. Specific gravity of material pile: 0.8t/m 3. Moisture content of the material: -10%. Feeding granularity: 99 percent of minus 200 meshes. Processing capacity: 3-12 t/h. Normal capacity: 7 t/h.
Dust removal decrement balance:
name of material: and (5) removing dust. Specific gravity of material pile: 2.0t/m 3. Moisture content of the material: -2%. Feeding granularity: the minus 200 meshes are more than or equal to 90 percent. Processing capacity: 2-10 t/h. Normal capacity: 3.5 t/h.
The anthracite powder decrement balance:
name of material: anthracite fines. Specific gravity of material pile: 0.6t/m 3. Moisture content of the material: < 1%. Feeding granularity: minus 200 meshes is more than or equal to 85 percent. Processing capacity: 3-7 t/h. Normal capacity: 5 t/h.
A dolomite weight reduction scale:
name of material: dolomite powder. Specific gravity of material pile: 1.4t/m 3. Moisture content of the material: < 1%. Feeding granularity: 325 mesh ≥ 85%. Processing capacity: 3-15 t/h. Normal capacity: 10 t/h.
Aiming at different reduction scales, the discharge adjusting mechanism is added in the reduction scale, and the size of the discharge hole 6 is adjusted by adjusting the gap between the baffle plate 10 and the discharge mechanism, so that the reduction scale can adapt to powder with different densities.
For example, if the dedusting ash reduction scale fails, the bentonite and anthracite coal reduction scale are required to be used for replacing, and when the bentonite and anthracite coal reduction scale is at the lowest rotating speed (spiral frequency conversion adjustment), the lowest feeding amount is 3t, if the dedusting ash is matched, the lowest feeding amount is still more than 8t/h under the condition of the lowest rotating speed due to different densities, and the process requires 6t/h of material amount in hours, at this time, the traditional reduction scale cannot meet the requirements. And adopt the utility model discloses afterwards, can realize the reduction in baffle 10 and discharge mechanism clearance through upwards adjusting the baffle 10 to reduce discharge gate 6, combine PID automatic control dual control, realize that the powder of the multiple different density of single decrement title joins in marriage and adds the switching, stabilize the discharge.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A decrement scale is characterized by comprising a stock bin, a feeding mechanism, a weighing hopper, a discharging mechanism and a discharging adjusting mechanism;
the weighing hopper is positioned below the stock bin and is connected with the stock bin through the feeding mechanism;
the discharging mechanism is arranged at the bottom of the weighing hopper;
the discharging adjusting mechanism is arranged at a discharging opening of the discharging mechanism;
the discharging adjusting mechanism comprises a fixing piece, a connecting column and a baffle;
the mounting is fixed discharge mechanism is last, the center of mounting has the through-hole, the one end of spliced pole is passed through the through-hole with the mounting is connected, the other end of spliced pole penetrates the center of baffle, baffle movable with the spliced pole is connected.
2. The decrement scale of claim 1, wherein the feed mechanism is a pneumatic butterfly valve or a vane feeder.
3. The decrement-scale of claim 1, wherein the feeding mechanism is in flexible connection with the weighing hopper.
4. The decrement scale of claim 1, wherein the upper portion of the weighing hopper is provided with an air vent.
5. The decrement scale of claim 1, wherein the outfeed mechanism comprises an outfeed screw and a motor;
the motor is connected with the discharging screw;
the discharge port is arranged at the bottom of the discharge spiral.
6. The decrement scale of claim 1, wherein the fixing member comprises a connecting ring and a plurality of connecting arms;
the connecting arms are encircled around the connecting circular ring, one end of each connecting arm is connected with the connecting circular ring, and the other end of each connecting arm is connected with the discharging mechanism.
7. The decrement scale of claim 1, wherein the connecting column is a connecting bolt.
8. The decrement scale of claim 1, further comprising a nut;
the nut sets up on the spliced pole, just, the nut is located the below of baffle.
9. The decrement scale of claim 5, further comprising a load cell, a controller, an actuator, and a transducer;
the load sensor is arranged on the weighing hopper;
the controller is connected with the load sensor;
the controller is also connected with the feeding mechanism through the execution mechanism;
the controller is also connected with the motor through the frequency converter.
10. The reduction scale of claim 9, wherein said reduction scale comprises a plurality of said load sensors symmetrically distributed over said weighing hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020559231.7U CN212409839U (en) | 2020-04-15 | 2020-04-15 | Weight-reducing scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020559231.7U CN212409839U (en) | 2020-04-15 | 2020-04-15 | Weight-reducing scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212409839U true CN212409839U (en) | 2021-01-26 |
Family
ID=74369127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020559231.7U Active CN212409839U (en) | 2020-04-15 | 2020-04-15 | Weight-reducing scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212409839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403250A (en) * | 2022-07-27 | 2022-11-29 | 四川超薄玻璃科技有限公司 | Discharging adjusting structure of glass melting kiln |
-
2020
- 2020-04-15 CN CN202020559231.7U patent/CN212409839U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403250A (en) * | 2022-07-27 | 2022-11-29 | 四川超薄玻璃科技有限公司 | Discharging adjusting structure of glass melting kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7312408B2 (en) | Granular material weighing hoppers containing pinch values or flipping-type hoppers | |
| US7534970B2 (en) | Counterbalanced dispensing system | |
| JP2602820B2 (en) | Continuous gravimetric scale for flowable materials | |
| WO2003040668A1 (en) | Volumetric feeder for powder and granular material and combination balance of powder and granular material | |
| CN212409839U (en) | Weight-reducing scale | |
| EP0731344B1 (en) | Device for charging weighed out articles into a container | |
| AU686501B2 (en) | Quantitative charging apparatus | |
| CN104075784B (en) | Automatic quantitative quasi-static weighing method and device | |
| CN2488816Y (en) | Gravity type automatic charging weighing apparatus | |
| EP0181738B1 (en) | Flow control apparatus | |
| JPS6044834A (en) | Weigher | |
| US7019224B2 (en) | Powder weighing apparatus and powder weighing method | |
| CN201277882Y (en) | Automatic measuring apparatus for expanded tobacco shred | |
| CN2786569Y (en) | Electronic chute scale | |
| CN112985558A (en) | Powder weigher weighing device and control system thereof | |
| CN213932780U (en) | Weightless scale | |
| CN108820278B (en) | Packing scale and device | |
| CN213090920U (en) | Weightlessness scale | |
| CN110092017A (en) | Granule materials package metro-measuring equipment and its packing method | |
| CN218567138U (en) | Automatic volume-weight balance | |
| CN212363396U (en) | Raw material metering device | |
| CN217980517U (en) | Vibration weightlessness scale | |
| CN212931627U (en) | Quartz sand proportioning device based on crucible production | |
| CN2160893Y (en) | Automatic continuous weighing apparatus for granules | |
| CN217650466U (en) | Disk feeder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |