Dynamic weighing apparatus

Abstract

The application provides a dynamic weighing device, which comprises a main shaft, a bearing assembly and a weighing assembly; the bearing assembly comprises a motor housing, a driving assembly, a bearing disc assembly connected to the driving assembly, a lifting flange connected to the motor housing, a knuckle bearing arranged on the inner side of the lifting flange and a pressure sensor; the driving assembly has a driving shaft connected to the main shaft; the bearing disc assembly is sleeved on the outer side of the main shaft and arranged on the inner side of the knuckle bearing; the pressure sensor is clamped between the lifting flange and the knuckle bearing along the axial direction of the main shaft; the weighing assembly comprises a material cabin assembly connected to the bearing disc assembly, a discharging assembly sleeved on the outer side of the main shaft, a rotating speed sensor and a torque sensor; the discharging assembly comprises an automatic discharging disc rotatable relative to the main shaft and a driving discharging disc rotatable along with the main shaft; the rotating speed sensor is arranged in the material cabin assembly and connected to the material cabin assembly in correspondence with the automatic discharging disc; and the torque sensor is attached to the outer surface of the main shaft along the circumferential direction of the main shaft.

Description

Technical Field

[0001] This application relates to the technical field of aquaculture equipment technology, and more specifically to a dynamic weighing device. Background Technology

[0002] my country's traditional aquaculture production methods are extensive and highly susceptible to both external aquatic environmental degradation and internal water quality deterioration. This has led to a shrinking aquaculture space in inland and coastal areas, resulting in declining product quality, frequent disease outbreaks, and increasing environmental pollution. Furthermore, the extensive and inefficient management practices in domestic land and near-shore aquaculture result in low profits and intense competition for businesses, necessitating technological innovation and industrial restructuring to find new economic growth points.

[0003] With the continuous deployment and operation of large-scale cage aquaculture and aquaculture vessels, the demand for related equipment is also constantly increasing. Feed is a crucial element in deep-sea aquaculture. Data shows that feed costs, as the most significant and persistent aquaculture cost, account for as much as 40% or even higher of the total equipment investment in the aquaculture process. Furthermore, different farmed fish require different feeds, and correspondingly, the physical properties of different feeds vary. Differences in particle diameter and density necessitate adjustments to the control parameters during feed metering.

[0004] Known equipment used for metering feed in automatic feeding systems suffers from significant impacts on the mass flow rate control algorithm when the equipment tilts or sways in the front-back or left-right directions. This results in the inability to adjust relevant parameters in real time and the generation of additional bending moments on the main shaft, ultimately leading to an incorrect actual output mass flow rate.

[0005] Therefore, a dynamic weighing device is needed to at least partially solve the above problems. Summary of the Invention

[0006] The summary section of this invention introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] To at least partially solve the above problems, this application provides a dynamic weighing device, which includes:

[0008] spindle;

[0009] The load-bearing component includes:

[0010] Motor housing;

[0011] A drive assembly, which is disposed in the motor housing and has a drive shaft connected to one end of the main shaft;

[0012] A lifting flange, which is connected to the motor housing and the mounting base;

[0013] A spherical bearing, wherein the spherical shaft is disposed inside the lifting flange;

[0014] A load-bearing plate assembly is sleeved on the outside of the main shaft and disposed on the inside of the spherical bearing. There is a gap between the load-bearing plate assembly and the main shaft in the radial direction of the main shaft, and the load-bearing plate assembly is connected to the drive assembly.

[0015] A pressure sensor, clamped between the lifting flange and the spherical bearing along the axial direction of the main shaft, is used to measure the weight of the feed in the dynamic weighing device; and

[0016] Weighing assembly, the weighing assembly comprising:

[0017] A hopper assembly, which is spaced apart from the motor housing and connected to the load-bearing plate assembly, wherein the other end of the main shaft is disposed in the hopper assembly;

[0018] A feeding assembly is disposed in the material bin assembly, and the feeding assembly includes an automatic feeding disc and an active feeding disc disposed below the automatic feeding disc. The automatic feeding disc is sleeved on the outside of the main shaft and is rotatable relative to the main shaft. The active feeding disc is sleeved on the outside of the main shaft and rotates with the main shaft.

[0019] A rotational speed sensor is disposed in the hopper assembly corresponding to the automatic feeding disc and connected to the hopper assembly for measuring the rotational speed of the automatic feeding disc.

[0020] A torque sensor is attached to the outer surface of the spindle along the circumferential direction to measure the torque of the spindle.

[0021] The dynamic weighing device according to the present invention mainly includes a main shaft, a load-bearing component, and a weighing component. The load-bearing component is mainly used to bear the weight of the entire dynamic weighing device, and the weighing component is mainly used to measure the mass flow rate of the feed. Furthermore, when the platform tilts, the main shaft of the weighing device can be subjected to pure torque. When the dynamic weighing device is suspended and installed via a lifting flange, since the weight of the relevant components in the dynamic weighing device is known, and the weight change of the feed in the dynamic weighing device causes different pressures on the pressure sensor generated by the load-bearing plate component through the spherical bearing, the weight of the feed remaining in the dynamic weighing device can be detected in real time by the pressure sensor. A speed sensor is installed in the feed hopper component corresponding to the automatic feeding disc. By measuring the rotational speed of the automatic feeding disc and based on the feed feeding amount and the rotational inertia of the automatic feeding disc, the mass flow rate through the automatic feeding disc can be initially obtained, and the total mass of the feed can be accumulated in the controller. A torque sensor is used to measure the torque of the main shaft. It is the main measuring component and can measure the final mass flow rate of the feed passing through the automatic feeding disc based on the Coriolis force. Similarly, the total mass of the feed can be accumulated in the controller. The values ​​of these three sensors may have timing differences. After trial operation, the relevant parameters are accumulated and the quality error obtained from the three sensors can be eliminated through the controller control algorithm. Therefore, through the continuous self-learning of the controller, the accuracy of measurement and correction is improved, thereby accurately measuring the feed mass flow rate through the equipment.

[0022] Optionally, the automatic feeding disc includes multiple blades with curved surfaces.

[0023] Optionally, the material hopper assembly includes a feeding hopper, a leveling hopper, and a discharging hopper. The leveling hopper is located below and connected to the feeding hopper. The discharging hopper is located below and connected to the leveling hopper. The main shaft extends through the feeding hopper, the leveling hopper, and the discharging hopper. The load-bearing plate assembly is connected to the feeding hopper. The automatic discharging disc is located in the leveling hopper. The speed sensor is located in the leveling hopper corresponding to the automatic discharging disc and is connected to the leveling hopper. The active discharging disc is located in the discharging hopper.

[0024] Optionally, the hopper assembly further includes a transition chamber and a discharge chamber, the transition chamber being disposed below and connected to the discharge chamber, the discharge chamber being disposed below and connected to the transition chamber, and the main shaft extending into and beyond the transition chamber.

[0025] Optionally, the dynamic weighing device further includes a feed grid and a discharge grid, wherein the feed grid is disposed at the upper part of the feed chamber and is movably connected to the feed chamber, and the discharge grid is disposed at the bottom of the discharge chamber and is movably connected to the discharge chamber.

[0026] Optionally, the feeding chamber includes a first leveling grid located at the bottom, and the unloading assembly further includes a second leveling grid disposed above the automatic unloading disc and below the first leveling grid. The second leveling grid is rotatable relative to the first leveling grid. The main shaft extends through the first leveling grid and the second leveling grid. The first leveling grid has at least one first leveling hole, and the second leveling grid has at least one second leveling hole corresponding to the first leveling hole.

[0027] Optionally, the feeding chamber includes a first isolation grid plate disposed above the active feeding disc, and the feeding assembly further includes a second isolation grid plate disposed above the active feeding disc and below the first isolation grid plate. The second isolation grid plate is rotatable relative to the first isolation grid plate. The main shaft extends through the first isolation grid plate and the second isolation grid plate. The first isolation grid plate has at least one first isolation hole, and the second isolation grid plate has at least one second isolation hole corresponding to the first isolation hole. Optionally, the dynamic weighing device further includes a first bearing assembly, which is sleeved on the outside of the main shaft and at least partially disposed on the inside of the automatic feeding disc, such that the automatic feeding disc is rotatable relative to the main shaft.

[0028] Optionally, the dynamic weighing device further includes a seal, which is clamped between the outer surface of the main shaft and the inner surface of the automatic feeding disc along the circumference of the main shaft.

[0029] Optionally, the drive assembly includes a drive motor, a coupling, and a flange cover. The drive motor includes the drive shaft, the coupling connects the main shaft to the drive shaft, and the load-bearing plate assembly is connected to the flange cover. Attached Figure Description

[0030] The following drawings, which are incorporated herein by reference and used to understand this application, illustrate embodiments of the application and their descriptions, thereby explaining the principles of the application.

[0031] In the attached image:

[0032] Figure 1 This is a perspective view of a preferred embodiment of the dynamic weighing device according to the present invention;

[0033] Figure 2 for Figure 1 A cross-sectional schematic diagram of the dynamic weighing equipment in the diagram;

[0034] Figure 3 for Figure 1A three-dimensional schematic diagram of the automatic feeding disc of the dynamic weighing equipment;

[0035] Figure 4 for Figure 1 A partial structural diagram of the dynamic weighing device is shown, which illustrates the first and second uniform feed grids.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100: Dynamic weighing equipment

[0038] 111: Motor housing

[0039] 112: Material hopper assembly

[0040] 113: Feeding compartment

[0041] 114: Material equalization chamber

[0042] 115: Unloading compartment

[0043] 116: Transit Cabin

[0044] 117: Discharge Chamber

[0045] 118: Feed Inlet

[0046] 120: Driver Components

[0047] 121: Drive motor

[0048] 122: Coupling

[0049] 123: Flange Cover

[0050] 130: Spindle

[0051] 140: Material feeding assembly

[0052] 141: Automatic feeding disc

[0053] 142: Active feeding disc

[0054] 143: First leveling grid

[0055] 144: Second feeding grid

[0056] 145: First material distribution hole

[0057] 146: Second material distribution hole

[0058] 147: Lateral wall

[0059] 148: Inner wall

[0060] 149: Leaf blade

[0061] 150: Support plate assembly

[0062] 151: First through hole

[0063] 152: Second through hole

[0064] 153: Teeth

[0065] 154: First isolation fence disk

[0066] 160: Lifting flange

[0067] 170: Spherical plain bearing

[0068] 181: Feed grid

[0069] 183: First bearing assembly

[0070] 185: Base

[0071] 191: Pressure sensor

[0072] 192: Speed ​​sensor

[0073] 193: Torque sensor

[0074] 194: Seals Detailed Implementation

[0075] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0076] To fully understand this application, a detailed description will be provided below. It is obvious that the implementation of embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may also be available in addition to these detailed descriptions.

[0077] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0078] Ordinal numbers such as “first” and “second” used in this application are merely identifiers and have no other meaning, such as a specific order. Moreover, for example, the term “first component” does not imply the existence of a “second component”, and the term “second component” does not imply the existence of a “first component”.

[0079] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be restrictive.

[0080] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0081] This invention provides a dynamic weighing device 100, such as... Figure 1 and Figure 2 As shown, the dynamic weighing device 100 mainly includes a main shaft 130, a load-bearing component, and a weighing component. The load-bearing component is mainly used to support the weight of the entire dynamic weighing device, and the weighing component is mainly used to measure the mass flow rate of the feed.

[0082] The load-bearing components mainly include a motor housing 111, a drive assembly 120, a lifting flange 160, a spherical bearing 170, a load-bearing plate assembly 150, and a pressure sensor 191. The weighing components mainly include a hopper assembly 112, a discharge assembly 140, a speed sensor 192, and a torque sensor 193.

[0083] Continue to refer to Figure 1 and Figure 2 The motor housing 111 and the hopper assembly 112 are spaced apart along the axial direction of the main shaft 130. The drive assembly 120 is disposed within the motor housing 111 and has a drive shaft (not shown). One end (specifically the upper end) of the main shaft 130 is connected to the drive shaft, and the other end (specifically the lower end) of the main shaft 130 is disposed within the hopper assembly 112. Specifically, as... Figure 2 As shown, the drive assembly 120 includes a drive motor 121, a coupling 122, and a flange cover 123. The drive motor 121 includes the drive shaft as described above and is connected to the flange cover 123. The coupling 122 connects the upper end of the main shaft 130 to the drive shaft. The main shaft 130 has a hollow structure to reduce weight, increase deformation while meeting torque transmission requirements, and improve measurement accuracy.

[0084] The upper end of the lifting flange 160 is connected to the motor housing 111, and the spherical bearing 170 is disposed inside the lifting flange 160. The lifting flange 160 is used to mount the dynamic weighing device 100 on a mounting base such as a large net cage or an aquaculture vessel. The dynamic weighing device 100 may also include a base 185, to which the lifting flange 160 is connected, and the dynamic weighing device 100 is suspended via the lifting flange 160 and the base 185.

[0085] The load-bearing plate assembly 150 is sleeved on the outside of the main shaft 130 and disposed inside the spherical plain bearing 170. That is, the spherical plain bearing 170 is sandwiched between the load-bearing plate assembly 150 and the lifting flange 160 in its radial direction. The two ends of the load-bearing plate assembly 150 are respectively connected to the drive assembly 120 and the hopper assembly 112. Specifically, the upper end of the load-bearing plate assembly 150 is connected to the flange cover 123 of the drive assembly 120.

[0086] In this embodiment, a gap exists between the load-bearing plate assembly 150 and the main shaft 130 in the radial direction of the main shaft 130. That is, the load-bearing plate assembly 150 does not contact the main shaft 130 and does not rotate with the rotation of the main shaft 130. The pressure sensor 191 is clamped between the lifting flange 160 and the spherical bearing 170 in the axial direction of the main shaft 130 to measure the weight information of all components in the dynamic weighing device 100 except for the motor housing 111, the lifting flange 160, and the base 185, as well as the feed entering the device. When the weight of the feed inside the dynamic weighing device 100 changes, the pressure of the load-bearing plate assembly 150 on the pressure sensor 191 changes, so that the weight information of the feed can be measured in real time.

[0087] In this application, the load-bearing components are mainly used to support the weight of the feed hopper assembly 112, the feeding assembly 140, and themselves, the weight of which is measured by the pressure sensor 191 and sent to the controller. The weighing components are mainly used to weigh the mass flow rate of feed passing through the feed hopper assembly 112.

[0088] like Figure 2 and Figure 3 As shown, the feeding assembly 140 is disposed within the material bin assembly 112 and sleeved on the outside of the main shaft 130. Specifically, the feeding assembly 140 includes an automatic feeding disc 141 and an active feeding disc 142. The automatic feeding disc 141 is sleeved on the outside of the main shaft 130 and is rotatable relative to the main shaft 130. That is, the automatic feeding disc 141 does not rotate with the rotation of the main shaft 130. The active feeding disc 142 is sleeved on the outside of the main shaft 130 and is disposed directly below the automatic feeding disc 141. The active feeding disc 142 and the automatic feeding disc 141 are spaced apart along the axial direction of the main shaft 130, and the active feeding disc 142 rotates with the rotation of the main shaft 130.

[0089] like Figure 3 As shown, the automatic feeding disc 141 includes a plurality of blades 149 with curved surfaces and an outer sidewall 147 and an inner sidewall 148 extending circumferentially. The inner sidewall 148 is disposed below the inner side of the outer sidewall 147, and the blades 149 are connected between the outer sidewall 147 and the inner sidewall 148. Specifically, the upper end of the inner sidewall 148 is flush with or lower than the upper end of the outer sidewall 147, and the diameter of the upper end of the inner sidewall 148 is smaller than the diameter of the upper end of the outer sidewall 147. The lower end of the inner sidewall 148 is lower than the lower end of the outer sidewall 147, and the diameter of the lower end of the inner sidewall 148 is equal to or slightly larger than the diameter of the lower end of the outer sidewall 147. The plurality of blades 149 are spaced apart (e.g., evenly spaced) between the outer sidewall 147 and the inner sidewall 148, with the upper end of the blade 149 connected to the outer sidewall 147 and the lower end of the blade 149 connected to the inner sidewall 148. A channel with openings at the top and bottom is formed between two adjacent blades 149, outer sidewall 147 and inner sidewall 148. The feed flows from the upper end of the channel to the lower end of the channel under the guidance of the blades 149, outer sidewall 147 and inner sidewall 148 and flows out from the lower end opening of the channel.

[0090] like Figure 1 and Figure 2 The shown material hopper assembly 112 includes a feed hopper 113, a leveling hopper 114, and a discharge hopper 115. The leveling hopper 114 is located below and connected to the feed hopper 113, and the discharge hopper 115 is located below and connected to the leveling hopper 114. A main shaft 130 extends through the feed hopper 113, the leveling hopper 114, and the discharge hopper 115. An automatic discharge disc 141 is located in the leveling hopper 114, and an active discharge disc 142 is located in the discharge hopper 115. Specifically, the active discharge disc 142 is located in the lower region of the discharge hopper 115. The lower end of the support plate assembly 150 is connected to the upper end of the feed hopper 113, and the lower end of the feed hopper 113 is connected to the upper end of the leveling hopper 114.

[0091] The hopper assembly 112 also includes a transition chamber 116 and a discharge chamber 117. The transition chamber 116 is located below and connected to the discharge chamber 115, and the discharge chamber 117 is located below and connected to the transition chamber 116. The main shaft 130 extends into and does not exceed the transition chamber 116. The discharge chamber 117 is at least partially made of a flexible material such as rubber or a corrugated material to allow for height adjustment of the hopper assembly 112, thereby facilitating connection of the dynamic weighing device 100 to the target pipeline.

[0092] The dynamic weighing device 100 also includes a feed grid 181 and a discharge grid (not shown). The feed grid 181 is located on the upper part of the feed chamber 113 and is movably connected to the feed chamber 113. The discharge grid is located on the bottom of the discharge chamber 117 and is movably connected to the discharge chamber 117.

[0093] Specifically, the feeding chamber 113 is provided with four feeding ports 118, and the dynamic weighing device 100 correspondingly includes four feeding grids 181, which are plate-shaped structures. Each feeding grid 181 is movably disposed in the feeding chamber 113 along its circumference to cover or open the feeding ports 118, allowing feed to enter the feeding chamber 113 through the feeding ports 118. The speed at which feed enters the feeding chamber 113 can be controlled by adjusting the opening size and rotation speed of the feeding grids 181. In this embodiment, the feeding ports 118 are constructed as circular through holes. Those skilled in the art will understand that the feeding ports 118 can also be constructed as through holes of any other arbitrary shape, and the number of feeding ports 118 is not limited to this embodiment. Optionally, the feeding grids 181 can also be flange structures, which are directly connected to the feeding ports 118 and can be directly connected to pneumatic conveying pipes, thereby controlling the feed rate by controlling the pneumatic conveying speed.

[0094] Specifically, such as Figure 1 As shown, the feed chamber 113 is provided with two circumferentially extending mounting slots, the openings of which are positioned opposite each other. The upper end of the feed grid 181 is inserted into the upper mounting slot, and the lower end of the feed grid 181 is inserted into the lower mounting slot, allowing the feed grid 181 to move circumferentially along the mounting slots. Therefore, once the feed quantity is sufficient, the feed inlet 118 can be immediately covered by rotating the feed grid 181.

[0095] like Figure 2 As shown, the dynamic weighing device 100 also includes a speed sensor 192. The speed sensor 192 is disposed in the material distribution chamber 114 corresponding to the automatic feeding disc 141 and is connected to the material distribution chamber 114 to measure the rotational speed of the automatic feeding disc 141. Specifically, the upper end of the outer side wall 147 of the automatic feeding disc 141 is provided with a plurality of circumferentially extending teeth 153, which are equally spaced. The speed sensor 192 is preferably disposed corresponding to the teeth 153.

[0096] Continue to refer to Figure 2 The dynamic weighing device 100 also includes a first bearing assembly 183, which is sleeved on the outside of the main shaft 130 and at least partially disposed on the inside of the automatic feeding disc 141, so that the automatic feeding disc 141 can rotate relative to the main shaft 130 without rotating with the main shaft 130.

[0097] The dynamic weighing device 100 also includes a seal (not shown), which is preferably a sealing stuffing box or a Y-ring seal. The seal is sleeved around the outer surface of the main shaft 130 in the circumferential direction to prevent feed from entering the bearing assembly or other rotating parts or from leaking, which would affect the operation of the equipment and the measurement accuracy. Figure 2 The image exemplarily shows a seal 194, which is mainly used to prevent feed from entering the gap between the main shaft 130 and other parts (such as the automatic feeding disc 141 and the active feeding disc 142), preventing feed from accumulating over a long period of time and easily becoming moldy, or even affecting the rotation of the main shaft 130.

[0098] like Figure 2 and Figure 4 As shown, the feeding chamber 113 includes a first leveling grid 143 located at the bottom, and the unloading assembly 140 further includes a second leveling grid 144 disposed above the automatic unloading disc 141 and below the first leveling grid 143. The second leveling grid 144 is rotatable relative to the first leveling grid 143. For example, the second leveling grid 144 can be rotated by a motor via a lead screw, gear, or synchronous belt, or by a cylinder. In this embodiment, the first leveling grid 143 is the bottom wall of the feeding chamber 113. It is understood that, as needed, the first leveling grid 143 can also be a part separate from the feeding chamber 113. The main shaft 130 extends through the first leveling grid 143 and the second leveling grid 144. Specifically, the first leveling grid 143 has a first through hole 151, and the second leveling grid 144 has a second through hole 152. Both the first through hole 151 and the second through hole 152 are constructed as circular through holes, and the main shaft 130 extends through the first through hole 151 and the second through hole 152.

[0099] The first uniform feed grid 143 has at least one first uniform feed hole 145, and the second uniform feed grid 144 has at least one second uniform feed hole 146 corresponding to the first uniform feed hole 145. The number and size of the second uniform feed holes 146 correspond to the number and size of the first uniform feed holes 145, respectively. Figure 4 The example shows eight first and second uniform feeding holes 145 and 146. In this embodiment, both the first and second uniform feeding holes 145 and 146 are constructed as fan-shaped annular through holes. Those skilled in the art will understand that the shapes of the first and second uniform feeding holes 145 and 146 are not limited to this embodiment. As needed, the first and second uniform feeding holes 145 and 146 can be triangular, polygonal, or any other suitable shape.

[0100] The feeding chamber 115 includes a first isolation grid 154 disposed above the active feeding disc 142. The feeding assembly 140 also includes a second isolation grid (not shown) disposed above the active feeding disc 142 and below the first isolation grid 154, the second isolation grid being rotatable relative to the first isolation grid 154. For example, the second isolation grid can be positioned by a bearing assembly and can be rotated by a motor via a lead screw, gear, or synchronous belt, or by a cylinder. In this embodiment, the first isolation grid 154 is a horizontal wall structure disposed in and integrally formed with the feeding chamber 115. It is understood that, as needed, the first isolation grid 154 can also be a part separate from the feeding chamber 115. The main shaft 130 extends through the first isolation grid 154 and the second isolation grid. The first isolation grid has at least one first isolation hole, and the second isolation grid has at least one second isolation hole corresponding to the first isolation hole. Since the structures of the first isolation grid 154 and the second isolation grid are similar to those of the first feed equalization grid 143 and the second feed equalization grid 144, they will not be described in detail here. When the mass of feed falling from the active feeding disc 142 reaches the target value, the first isolation hole on the first isolation grid 154 is blocked by rotating the second isolation grid, so that the feed cannot fall from the first isolation hole.

[0101] like Figure 2 As shown, the dynamic weighing device also includes a torque sensor 193, which is attached to the outer surface of the main shaft 130 along the circumferential direction of the main shaft 130 to detect the torque when the main shaft 130 rotates.

[0102] In this application, the active feeding disc 142 serves as a metering disc, and its working principle is as follows: Assuming the total mass of material passing through the active feeding disc 142 within the time interval 0-t is m, then:

[0103]

[0104] Where R is the radius of the active feeding disk 142, in meters;

[0105] ω is the constant angular velocity of the active feeding disk 142, in rad / s;

[0106] q(t) is the instantaneous mass flow rate at the outlet section of the active feeding disc 142 at time t, in kg / s;

[0107] F(t) is the instantaneous torque collected by torque sensor 193, in Nm;

[0108] Since the instantaneous torque collected by the torque sensor 193 is formed by the combined action of all the particles on the active feeding disk 142 at a certain measurement moment, the Coriolis force generated by each particle on the active feeding disk 142 is different at a certain instantaneous measurement moment, and the radial movement length is also different. Therefore, the instantaneous mass flow rate calculation formula expressed in equation (1) has theoretical defects and is not an accurate mass flow rate expression.

[0109]

[0110] Equation (2) is the commonly used calculation formula of Coriolis force theory. In practical applications, it is necessary to accurately control the k value of the control system so that its metering output parameters match the actual values. This requires the accumulation of a large amount of experimental data.

[0111] In this embodiment, after the feed enters the feed chamber 113 through the feed inlet 118, it accumulates rapidly in the feed chamber 113. Due to its own weight, the feed at the bottom of the feed chamber 113 enters the upper opening of the channel of the automatic feeding disc 141 located in the feeding chamber 114 through the first equalization hole 145 and the second equalization hole 146. The weight of the feed acts on the blade 149, causing the automatic feeding disc 141 to rotate automatically. Under the guiding action of the blade 149, the outer wall 147 and the inner wall 148, the feed flows out from the lower opening of the channel.

[0112] The speed sensor 192 collects data in real time, and the mass flow rate at the lower opening of the channel of the automatic feeding disk 141 can be obtained based on the relationship between the feeding amount and the rotational inertia of the automatic feeding disk 141.

[0113] Because the automatic feeding disc 141 rotates automatically, the feed entering the active feeding disc 142 is evenly distributed, avoiding the generation of additional bending moments. Driven by a motor, the active feeding disc 142 rotates at a constant speed. At this time, the torque sensor 193 collects data on the torsional deformation of the main shaft 130. This data is wirelessly transmitted to a signal collector, then transmitted to the control box via a signal line. Based on the current signal, the precise torque of the material rotation can be obtained, thereby determining the material's mass flow rate.

[0114] Therefore, in the dynamic weighing device 100 of the present invention, the pressure sensor 191 reflects the overall residual mass of the feed. Since the mass of the relevant parts of the dynamic weighing device 100 is known (e.g., the mass of the weighing assembly is known), when the feed enters the dynamic weighing device 100, the pressure sensor 191 will first detect a new measurement value, and the weight of the feed entering the feed bin assembly 112 can be obtained through the difference in the pressure sensor 191. Based on the Coriolis force theory calculation formula of equation (2), the mass flow rate of the feed is reflected by the speed sensor 192 and the torque sensor 193. The speed sensor 192 is set in the feeding bin, and by measuring the rotational speed of the automatic feeding disc 141 and based on the feed feeding amount and the rotational inertia of the automatic feeding disc, the mass flow rate of the feed passing through the automatic feeding disc 141 can be initially obtained. The total mass of the feed can be accumulated in the controller by the running time. Torque sensor 193 is installed in the feeding chamber 115. As the main measuring component, torque sensor 193 can measure the mass flow rate of feed passing through the active feeding disc 142 based on Coriolis force. Similarly, the total mass of feed can be accumulated in the controller over time. When the accumulated mass approaches the target mass, the feed gate 181 is closed. When the mass of feed passing through the active feeding disc 142 equals the target mass, the discharge gate is closed. The structure of the discharge gate is similar to that of the feed gate. The control logic of the electrical control box ensures precise control of the feed mass passing through the dynamic weighing device 100. The opening and closing of the feed gate 181 and the discharge gate are subject to the control algorithm and coordinated action.

[0115] According to the present invention, the dynamic weighing device 100 based on Olympus force and suitable for marine platform environments ensures that the main shaft 130 is subjected to pure torque when the platform tilts. The torque of the main shaft 130 can be accurately measured by a strain gauge bridge circuit or a magnetoelectric phase type torque sensor 193. Simultaneously, the mass of feed remaining inside the feed hopper assembly 112 can be corrected by a pressure sensor 191 and a speed sensor 192. The torque sensor 193 further confirms that there may be a time difference between the values ​​of the three sensors. Finally, the accumulated relevant parameters during trial operation and the mass error obtained from the three sensors can be eliminated through the controller control algorithm. Therefore, through continuous self-learning by the controller, the accuracy of measurement and correction can be improved, thereby accurately measuring the mass flow rate of feed passing through the dynamic weighing device 100. The dynamic weighing device 100 can weigh feeds of different densities and diameters, exhibiting good adaptability.

[0116] Therefore, the dynamic weighing device 100 according to the present invention, by using a spherical bearing to suspend and install the entire dynamic weighing device, effectively solves the problem of the dynamic weighing device swaying and affecting measurement accuracy due to changes in sea conditions. In cases where the inertia of the actual product is insufficient, a gyroscope can be installed at the bottom of the dynamic weighing device to further improve its stability. Thus, it can adapt to the complex marine environment; even if the platform sways to a certain extent forward, backward, left, or right, the device will remain vertical due to its own inertia, ensuring the consistency of the device's operating state.

[0117] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0118] This application has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This application is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this application, and all such variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A dynamic weighing apparatus, characterized in that, The application relates to a dynamic weighing device, which comprises: a main shaft; a bearing assembly, which comprises: a motor housing; a driving assembly arranged in the motor housing and having a driving shaft connected to one end of the main shaft; a lifting flange connected to the motor housing and a mounting base; a joint bearing arranged on the inner side of the lifting flange; a bearing disc assembly sleeved on the outer side of the main shaft and arranged on the inner side of the joint bearing, the bearing disc assembly being spaced apart from the main shaft in the radial direction of the main shaft and connected to the driving assembly; a pressure sensor clamped between the lifting flange and the joint bearing in the axial direction of the main shaft for measuring the weight information of the feed in the dynamic weighing device; and a weighing assembly, which comprises: a hopper assembly arranged in space apart from the motor housing and connected to the bearing disc assembly, the other end of the main shaft being arranged in the hopper assembly; a discharging assembly arranged in the hopper assembly and comprising an automatic discharging disc sleeved on the outer side of the main shaft and rotatable relative to the main shaft and a driven discharging disc sleeved on the outer side of the main shaft and rotatable with the main shaft; a rotational speed sensor arranged in the hopper assembly corresponding to the automatic discharging disc and connected to the hopper assembly for measuring the rotational speed of the automatic discharging disc; a torque sensor attached to the outer surface of the main shaft in the circumferential direction of the main shaft for measuring the torque of the main shaft.

2. The dynamic weighing apparatus according to claim 1, characterized in that The automatic discharging disc comprises a plurality of blades with curved surfaces.

3. The dynamic weighing apparatus of claim 1, wherein, The hopper assembly comprises a feeding hopper, a uniformizing hopper arranged below the feeding hopper and connected to the feeding hopper and a discharging hopper arranged below the uniformizing hopper and connected to the uniformizing hopper, the main shaft extending through the feeding hopper, the uniformizing hopper and the discharging hopper, the bearing disc assembly being connected to the feeding hopper, the automatic discharging disc being arranged in the uniformizing hopper, the rotational speed sensor being arranged in the uniformizing hopper corresponding to the automatic discharging disc and connected to the uniformizing hopper, and the driven discharging disc being arranged in the discharging hopper.

4. The dynamic weighing apparatus according to claim 3, characterized in that The hopper assembly further comprises a transition hopper arranged below the discharging hopper and connected to the discharging hopper and a discharging hopper arranged below the transition hopper and connected to the transition hopper, the main shaft extending into the transition hopper and not exceeding the transition hopper.

5. The dynamic weighing apparatus according to claim 4, characterized in that The weighing assembly further comprises a feeding grid arranged on the upper portion of the feeding hopper and movably connected to the feeding hopper and a discharging grid arranged on the bottom of the discharging hopper and movably connected to the discharging hopper.

6. The dynamic weighing apparatus of claim 3, wherein, The feeding cabin includes a first uniformity grid disc at the bottom, the discharging assembly further includes a second uniformity grid disc arranged above the automatic discharging disc and below the first uniformity grid disc, the second uniformity grid disc is rotatable relative to the first uniformity grid disc, the main shaft extends through the first uniformity grid disc and the second uniformity grid disc, the first uniformity grid disc has at least one first uniformity hole, and the second uniformity grid disc has at least one second uniformity hole corresponding to the first uniformity hole.

7. The dynamic weighing apparatus of claim 3, wherein, The discharging cabin includes a first isolation grid disc arranged above the active discharging disc, the discharging assembly further includes a second isolation grid disc arranged above the active discharging disc and below the first isolation grid disc, the second isolation grid disc is rotatable relative to the first isolation grid disc, the main shaft extends through the first isolation grid disc and the second isolation grid disc, the first isolation grid disc has at least one first isolation hole, and the second isolation grid disc has at least one second isolation hole corresponding to the first isolation hole.

8. The dynamic weighing apparatus of claim 1, wherein, The dynamic weighing device further includes a first bearing assembly, the first bearing assembly is sleeved outside the main shaft and is at least partially arranged inside the automatic discharging disc, so that the automatic discharging disc is rotatable relative to the main shaft.

9. The dynamic weighing apparatus of claim 1, wherein, The dynamic weighing device further includes a seal, the seal is clamped between the outer surface of the main shaft and the inner surface of the automatic discharging disc along the circumference of the main shaft.

10. The dynamic weighing apparatus according to any one of claims 1 to 9, characterized in that, The driving assembly includes a driving motor, a shaft coupling and a flange cover, the driving motor includes the driving shaft, the shaft coupling connects the main shaft to the driving shaft, and the force bearing disc assembly is connected to the flange cover.

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