Accurate error compensation system for material supplementing process of weightlessness scale

Abstract

The utility model belongs to the technical field of weightlessness scales, and particularly relates to a system for accurately compensating errors in a material supplementing process of a weightlessness scale. The continuous quantitative feeding device comprises a weightlessness scale used for continuous quantitative feeding; the material supplementing bin is communicated with the weightlessness scale, the material supplementing bin is used for supplementing materials to the weightlessness scale, and the material supplementing bin is provided with at least one weighing module; the controller is electrically connected with the weightlessness scale, the material supplementing bin and the weighing module; the volume of the material supplementing bin is larger than that of the weightlessness scale. The feeding device is used for solving the technical problem that in the prior art, feeding errors of a weightlessness scale are caused when the weightlessness scale in work is fed.

Description

Technical Field

[0001] The utility model belongs to the technical field of loss-in-weight scales, and in particular relates to a precise compensation system for errors in a feeding process of a loss-in-weight scale. Background Art

[0002] Loss-in-weight scale is an automatic weighing device that achieves high-precision continuous quantitative feeding by static weighing. It can reliably, accurately and stably feed dry bulk materials such as powders, granules and flakes, reduce material waste and improve the consistency of the mixture.

[0003] However, during the continuous feeding process of the loss-in-weight scale, the material in the silo inside the scale will decrease as the feeding continues. Then it is necessary to add material to the silo. During the material adding process, the material in the loss-in-weight scale will be input and output at the same time. The weight of the added material will affect the weighing accuracy of the loss-in-weight scale and interfere with the feeding accuracy of the loss-in-weight scale, thus affecting the subsequent product quality. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a precise compensation system for the error in the refilling process of a loss-in-weight scale, which is used to solve the technical problem in the prior art that refilling a loss-in-weight scale in operation will cause errors in the feeding of the loss-in-weight scale.

[0005] The utility model solves the above technical problems with the following technical solutions: a system for accurately compensating for errors in the feeding process of a weight loss scale, comprising:

[0006] A loss-in-weight scale, which is used for continuous quantitative feeding;

[0007] A feeding bin, the feeding bin is connected to the loss-in-weight scale, the feeding bin is used to feed the loss-in-weight scale, and the feeding bin is provided with at least one weighing module;

[0008] A controller, the controller being electrically connected to the loss-in-weight scale, the feeding bin and the weighing module respectively;

[0009] The volume of the feeding bin is greater than or equal to the volume of the loss-in-weight scale.

[0010] The utility model can measure the weight of the feeding bin and the loss-in-weight scale at the same time, so as to obtain the weight of the materials in the feeding bin and the loss-in-weight scale respectively. The total weight of the materials in the two is regarded as a whole. Then, the total weight of the materials before and after the feeding is measured by the controller, so as to obtain the feeding weight in the feeding process. By comparing the actual feeding weight with the set feeding weight, the feeding error can be obtained. Then, the controller records the feeding error, and eliminates the feeding error in the feeding stage when the loss-in-weight scale is not feeding.

[0011] Further: the loss-in-weight scale comprises:

[0012] Base;

[0013] A weighing assembly, wherein the weighing assembly is arranged on the top surface of the base;

[0014] A feeding assembly, the feeding assembly being arranged on the top surface of the weighing assembly;

[0015] A silo, which is disposed above the feeding assembly and is in communication with the feeding assembly;

[0016] A vertical fixing bracket is also provided on one side of the base, and the controller is mounted on the fixing bracket.

[0017] The beneficial effect of adopting this step is that the controller can monitor the weight of the silo in real time in combination with the weighing component, and control the feeding component to feed according to the set program.

[0018] Furthermore: a feeding assembly is also provided at the bottom of the feeding bin;

[0019] The feeding assembly comprises a feeding motor, a feeding screw shaft and a feeding pipe, wherein the feeding screw shaft is arranged in the feeding pipe, the feeding motor is connected to the feeding screw shaft at one end of the feeding pipe, and the feeding motor is used to drive the feeding screw shaft;

[0020] The bottoms of the feed replenishment bin and the feed bin are respectively communicated with the middles of their respective feeding pipes.

[0021] The beneficial effect of adopting this step is that the feeding bin feeds the silo of the loss-in-weight scale through the feeding assembly.

[0022] Furthermore: the bottom of the material bin and the replenishing bin are each provided with an arch breaking assembly, the arch breaking assembly includes an arch breaking motor and an arch breaking shaft, the material bin and the replenishing bin are each provided with the arch breaking shaft, and the shaft head of the arch breaking shaft extends out of the corresponding material bin and the replenishing bin, and is connected to the corresponding arch breaking motor.

[0023] The beneficial effects of adopting this step are as follows: the arch-breaking component can prevent the material from accumulating and clogging at the bottom of the cone-shaped shell, and can destroy the arch-shaped material shape to facilitate the falling of the material.

[0024] Furthermore, an air pressure balance pipe is provided between the feed replenishment bin and the silo, and two ends of the air pressure balance pipe are respectively connected to the top cover of the feed replenishment bin and the silo.

[0025] The beneficial effect of adopting this step: the air pressure balance pipe can balance the air pressure in the feed bunker and the feed bunker.

[0026] Furthermore: the top cover of the feeding bin and the top cover of the silo are both provided with a stirring assembly;

[0027] The top cover of the feed replenishment bin is provided with a feeding port, the top cover of the silo is provided with a feed inlet, and the outlet of the feeding assembly of the feed replenishment bin is softly connected to the feed inlet;

[0028] The top cover of the feeding bin and the top cover of the silo are both provided with a back-blowing dust collector.

[0029] The beneficial effect of adopting this step: the stirring component is used to stir the material to prevent the material from agglomerating.

[0030] The beneficial effects of the utility model are:

[0031] The utility model ensures that the material feeding accuracy of the loss-in-weight scale is stable and controllable during the feeding cycle, and at the same time can ensure that the overall feeding amount is controllable; by repeatedly calculating the compensation amount, the volume mode operation control during the feeding period is feedback controlled, thereby ensuring more stable accuracy control. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a system for accurately compensating for errors in a weightlessness scale feeding process provided by the utility model;

[0034] Figure 2 The utility model provides an application schematic diagram of a system for accurately compensating errors in a loss-in-weight scale feeding process.

[0035] Reference numerals:

[0036] 1-loss-in-weight scale; 2-feeding bin; 3-support frame; 4-weighing module; 5-controller; 6-arch breaking assembly; 7-air pressure balance pipe; 8-vibrator;

[0037] 11- silo; 12- feeding assembly; 13- weighing assembly; 14- base; 21- feeding port;

[0038] 141-fixed bracket;

[0039] A-weight of the feeding bin before feeding;

[0040] B- weight of the silo before refilling;

[0041] C-weight of the feeding bin after feeding;

[0042] D- weight of the silo after refilling;

[0043] F-actual feeding weight of silo;

[0044] T1-time point before feeding;

[0045] T2-time point after feeding. DETAILED DESCRIPTION

[0046] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0047] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0051] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] Example

[0053] like Figure 1 As shown, the utility model provides a system for accurately compensating errors in a weight loss scale feeding process, comprising:

[0054] A loss-in-weight scale 1, which is used for continuous quantitative feeding;

[0055] A feeding bin 2, wherein the feeding bin 2 is connected to the loss-in-weight scale 1. Specifically, the feeding bin 2 is located above the loss-in-weight scale 1, and the bottom of the feeding bin 2 is connected to the top of the loss-in-weight scale 1;

[0056] The feeding bin 2 is fixed by a plurality of support frames 3, and the plurality of support frames 3 are evenly distributed around the feeding bin 2, and a weighing module 4 is provided between the feeding bin 2 and each of the support frames 3, so as to obtain the accurate weight of the feeding bin 2, and the volume of the feeding bin is greater than or equal to the volume of the loss-in-weight scale;

[0057] The controller 5 is electrically connected to the loss-in-weight scale 1, the feeding bin 2 and the weighing module 4, respectively. Specifically, the controller 5 can control the start and stop of each motor in the loss-in-weight scale 1 and the feeding bin 2, as well as their respective rotation speeds, and can also receive the electrical signals of the weighing component 13 and the weighing module 4 in the loss-in-weight scale 1 in real time, and obtain specific values ​​according to the electrical signals, and control the timing of feeding, the amount of feeding and other parameters through the built-in program of the controller 5.

[0058] The utility model can simultaneously measure the weight of the feeding bin 2 and the loss-in-weight scale 1, and can obtain the weight of each material in the feeding bin 2 and the loss-in-weight scale 1. The total weight of the materials in the two is regarded as a whole, and then the total weight of the materials before and after the feeding is measured by the controller 5, and the feeding weight in the feeding process can be obtained. By comparing the actual feeding weight and the set feeding weight, the feeding error can be obtained, and then the controller 5 records the feeding error, and eliminates the feeding error during the feeding stage when the loss-in-weight scale 1 is not replenished.

[0059] On the basis of the above technical solution, the loss-in-weight scale 1 comprises:

[0060] Base 14;

[0061] A weighing assembly 13, wherein the weighing assembly 13 is arranged on the top surface of the base 14, wherein the weighing assembly 13 includes an internal sensor and an external shield, and the sensor can be S-shaped, cantilever-shaped, spoke-shaped, plate-ring-shaped, diaphragm-shaped, bridge-shaped, column-shaped, etc.;

[0062] A feeding component 12, wherein the feeding component 12 is arranged on the top surface of the weighing component 13;

[0063] A silo 11, wherein the silo 11 is disposed above the feeding assembly 12, and the silo 11 is in communication with the feeding assembly 12;

[0064] A vertical fixing bracket 141 is also provided on one side of the base 14 , and the controller 5 is mounted on the fixing bracket 141 .

[0065] The controller 5 can monitor the weight of the silo 11 in real time in conjunction with the weighing component 13 and control the feeding component 12 to feed according to a set program.

[0066] On the basis of the above technical solution, the weighing module 4 comprises a bottom plate and a top plate, and a weighing sensor is further arranged between the bottom plate and the top plate;

[0067] The top plate is used to be fixedly connected to a fixing block or a fixing ring on the feeding bin;

[0068] The bottom plate is used for being fixedly connected to the supporting frame.

[0069] There are many kinds of weighing sensors, including S-type, cantilever type, spoke type, plate ring type, diaphragm box type, bridge type, column tube type, etc. The specific connection shape of the top plate and the bottom plate is selected according to the weighing sensor, and a structure such as a connecting column or a guide sleeve can be set between the top plate and the bottom plate.

[0070] On the basis of the above technical solution, a feeding assembly 12 is also provided at the bottom of the feeding bin 2;

[0071] The feeding assembly 12 includes a feeding motor, a feeding screw shaft and a feeding pipe, wherein the feeding screw shaft is arranged in the feeding pipe, the feeding motor is connected to the feeding screw shaft at one end of the feeding pipe, and the feeding motor is used to drive the feeding screw shaft;

[0072] The bottoms of the feed replenishment bin 2 and the bin 11 are respectively connected to the middle of their respective feeding pipes.

[0073] The feeding bin 2 feeds the silo 11 of the loss-in-weight scale 1 through the feeding assembly 12, and the feeding speed and amount can be controlled.

[0074] On the basis of the above technical solution, the bottom of the silo 11 and the replenishing silo 2 are provided with various arch-breaking components 6, wherein the structures of the silo 11 and the replenishing silo 2 are various, and can be cylindrical, bucket-shaped or spherical; in this example, the upper parts of the two are cone-shaped shells, and the lower parts are hemispherical shells;

[0075] An arch breaking assembly 6 is provided on the side of the hemispherical shell. The arch breaking assembly 6 includes an arch breaking motor and an arch breaking shaft. The arch breaking shaft is located in the hemispherical shell, and the shaft head of the arch breaking shaft extends out of the hemispherical shell and is connected to the arch breaking motor.

[0076] The cone-shaped shell can gather materials, and the arch-breaking component 6 can prevent the materials from accumulating and clogging at the bottom of the cone-shaped shell, and can destroy the arch-shaped shape of the materials to facilitate the falling of the materials.

[0077] On the basis of the above technical solution, a plurality of vibrators 8 are evenly distributed on the outer side of the conical bucket-shaped shell of the feeding bin 2 .

[0078] The vibrator 8 can vibrate regularly to prevent the material from adhering to the cone-shaped shell.

[0079] On the basis of the above technical solution, an air pressure balance pipe 7 is further provided between the feed replenishment bin 2 and the silo 11 , and both ends of the air pressure balance pipe 7 are connected to the top covers of the feed replenishment bin 2 and the silo 11 , respectively.

[0080] The air pressure balance pipe 7 can balance the air pressure in the replenishing bin 2 and the silo 11, so that the materials in the replenishing bin 2 and the silo 11 will not generate negative pressure to affect the falling of the materials.

[0081] On the basis of the above technical solution, the top cover of the feed bunker 2 and the top cover of the bunker 11 are both provided with a stirring assembly;

[0082] The top cover of the feed bunker 2 is provided with a feed port 21, the top cover of the bunker 11 is provided with a feed inlet, and the outlet of the feeding assembly 12 of the feed bunker 2 is softly connected to the feed inlet, and the soft connection can eliminate vibration and extend the service life of the pipeline;

[0083] The top cover of the feeding bin 2 and the top cover of the bin 11 are both provided with a back-blowing dust collector, which can effectively prevent dust.

[0084] The stirring component is used to stir the materials to prevent them from agglomerating.

[0085] The following is an explanation of how to use the device:

[0086] Step 1: Starting stage.

[0087] The controller 5 detects the weight of the loss-in-weight scale 1. When the weight of the loss-in-weight scale 1 is above the set lower limit weight of the feed, the loss-in-weight scale 1 starts feeding; when the weight of the loss-in-weight scale 1 is below the set lower limit weight of the feed, the loss-in-weight scale 1 is fed, until the weight of the loss-in-weight scale 1 reaches the set upper limit weight of the feed, the feeding is completed, the feeding process is automatically stopped, and the loss-in-weight scale 1 starts running and feeds;

[0088] Step 2: The normal feeding stage of loss-in-weight scale 1.

[0089] During the operation of the loss-in-weight scale 1, the controller 5 collects and processes the weighing data in real time. After the calculation of the controller 5, the speed of the feeding motor of the loss-in-weight scale 1 is controlled to achieve the purpose of adjusting the material discharge flow of the loss-in-weight scale 1 in real time;

[0090] Meanwhile, during the operation of the loss-in-weight scale 1, the material in the silo 11 of the loss-in-weight scale 1 is gradually reduced. When the material in the silo 11 of the loss-in-weight scale 1 drops to the set lower limit weight of refilling, the refilling silo 2 starts to refill the loss-in-weight scale 1.

[0091] Step 3: When the material inside the loss-in-weight scale 1 is insufficient, the refilling bin 2 refills the loss-in-weight scale 1 with material.

[0092] The controller 5 controls the feeding bin 2 to start feeding the loss-in-weight scale 1, and the loss-in-weight scale 1 operates in volume mode. When the material in the bin of the loss-in-weight scale 1 reaches the set upper limit of feeding weight, the feeding process is automatically stopped after the feeding is completed.

[0093] Step 4: After the loss-in-weight scale 1 completes the feeding, it continues feeding and eliminates the error.

[0094] The controller 5 records the weight A of the feeding bin 2 and the weight B of the loss-in-weight scale 1 before feeding in step 3, as well as the weight C of the feeding bin 2 and the weight D of the loss-in-weight scale 1 after feeding, and the actual feeding weight F of the loss-in-weight scale 1 during the feeding period can be obtained, F=(A+B)-(C+D); and the theoretical feeding amount during the feeding period is E, then the actual feeding error G of the loss-in-weight scale 1, G=FE; at this time, the obtained G is substituted into step 2, and the step 2 will substitute the value G to fill / eliminate the feeding error during the feeding process. Assuming that G is a positive value, it means that the actual feeding value of the loss-in-weight scale 1 during the feeding period is more than the set feeding value. Then, when G is substituted into step 2, the controller 5 will subtract the feeding amount equivalent to G, otherwise it will increase the feeding amount;

[0095] Among them, after the first feeding is completed in step 1, steps 2, 3 and 4 are repeated many times until the subsequent process (extruder and other equipment) is stopped.

[0096] Wherein, the volume mode is that the loss-in-weight scale 1 outputs materials at a constant rotation speed.

[0097] That is, the controller 5 controls the feeding motor of the loss-in-weight scale 1 to run at a constant speed, so as to obtain a constant volume of output material, that is, a quantitative material, and reduce the interference of the output material on the weighing result.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A precise compensation system for the error in the feeding process of a loss-in-weight scale, characterized in that: include: A loss-in-weight scale, which is used for continuous quantitative feeding; A feeding bin, the feeding bin is connected to the loss-in-weight scale, the feeding bin is used to feed the loss-in-weight scale, and the feeding bin is provided with at least one weighing module; A controller, the controller being electrically connected to the loss-in-weight scale, the feeding bin and the weighing module respectively; The volume of the feeding bin is greater than or equal to the volume of the loss-in-weight scale.

2. The accurate compensation system for error in the feeding process of a loss-in-weight scale according to claim 1 is characterized in that: The loss-in-weight scale comprises: Base; A weighing assembly, wherein the weighing assembly is arranged on the top surface of the base; A feeding assembly, the feeding assembly being arranged on the top surface of the weighing assembly; A silo, which is disposed above the feeding assembly and is in communication with the feeding assembly; A vertical fixing bracket is also provided on one side of the base; The controller is mounted on the fixing bracket; An air pressure balance pipe is also provided between the feed replenishment bin and the silo, and two ends of the air pressure balance pipe are respectively connected to the top cover of the feed replenishment bin and the silo.

3. The accurate compensation system for error in the feeding process of a loss-in-weight scale according to claim 2 is characterized in that: A feeding assembly is also provided at the bottom of the feeding bin; The feeding assembly comprises a feeding motor, a feeding screw shaft and a feeding pipe, wherein the feeding screw shaft is arranged in the feeding pipe, the feeding motor is connected to the feeding screw shaft at one end of the feeding pipe, and the feeding motor is used to drive the feeding screw shaft; The bottoms of the feed replenishment bin and the feed bin are respectively communicated with the middles of their respective feeding pipes.

4. The accurate compensation system for error in the feeding process of a loss-in-weight scale according to claim 3 is characterized in that: The bottom of the material bin and the feeding bin is respectively provided with an arch breaking assembly, and the arch breaking assembly includes an arch breaking motor and an arch breaking shaft. The material bin and the feeding bin are respectively provided with the arch breaking shaft, and the shaft head of the arch breaking shaft extends out from the corresponding material bin and the feeding bin, and is connected to the corresponding arch breaking motor.

5. The accurate compensation system for error in the feeding process of a loss-in-weight scale according to claim 4 is characterized in that: The top cover of the feeding bin and the top cover of the silo are both provided with a stirring assembly; The top cover of the feed replenishment bin is provided with a feeding port, the top cover of the silo is provided with a feed inlet, and the outlet of the feeding assembly of the feed replenishment bin is softly connected to the feed inlet; The top cover of the feeding bin and the top cover of the silo are both provided with a back-blowing dust collector.

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