Rotor scale

Abstract

The utility model relates to the technical field of rotor scales, in particular to a rotor scale. Comprising a top plate provided with a feeding port and a bottom plate provided with a discharging port, a main shell is installed between the top plate and the bottom plate, the top plate is installed on a rack through a supporting mechanism, a weighing mechanism is arranged between the rack and the bottom plate, and a rotor assembly capable of being driven by a driving motor is installed in the main shell; the main shell comprises a plurality of same arc-shaped sub-shells, the head end faces and the tail end faces of the sub-shells are oppositely combined to form the cylindrical main shell, the oppositely-combined positions of the end faces of every two adjacent sub-shells are detachably and fixedly connected, and hinge mechanisms are arranged at the oppositely-combined positions of part of the end faces. Through the above structure, the dismounting process of the rotor scale in the maintenance process is simpler and more convenient, the rotor scale is more convenient to use, and the maintenance efficiency of the rotor scale is improved.

Description

Technical Field

[0001] This utility model relates to the field of rotor scale technology, and specifically to a rotor scale. Background Technology

[0002] The rotor scale is an industrial device specifically designed for dynamic metering and continuous feeding control of powder materials, widely used in industries such as cement, chemical, power, and metallurgy. Its core design integrates gravity calculation and balance principles, ensuring high precision, stability, and long-term reliability. By combining a balance structure with an intelligent control system, the rotor scale solves problems such as jetting and temperature-induced interference in powder material metering, becoming a key piece of equipment for high-precision continuous feeding. Its modular design is suitable for harsh industrial environments with high temperatures and dust levels, making it irreplaceable in scenarios such as cement kiln pulverized coal supply and chemical proportioning.

[0003] In existing technology, a rotor scale mainly consists of a frame, rotor scale housing, inlet, outlet, drive mechanism, rotor assembly, support mechanism, and weighing mechanism. The rotor assembly divides the inner chamber of the rotor scale into several compartments. Powder enters the rotor compartments through a feeder and flows evenly in a semi-circular area as the blades rotate. Weighing sensors detect the weight of the material in real time, and speed sensors synchronously collect the rotor speed. The control system integrates the weight and speed signals, calculates the instantaneous flow rate, and adjusts the motor speed through a frequency converter to achieve closed-loop flow control.

[0004] Because rotor scales have high accuracy requirements, they need to be inspected and maintained regularly. For example, the rotor assembly should be inspected regularly to prevent the blades from wearing out and causing the gap between them and the rotor scale housing to increase. If the gap is too large, gas will flow through and affect the measurement accuracy.

[0005] However, in the existing technology, the shell of the rotor scale is often an integral cylindrical shell, which together with the top plate and bottom plate form the inner chamber of the rotor scale. When the rotor scale is under maintenance, the top plate or bottom plate needs to be disassembled and then reassembled after the maintenance is completed. The disassembly and assembly process is cumbersome, which affects the maintenance speed of the rotor scale and makes the maintenance efficiency of the rotor scale low. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a rotor scale to solve the problem that the disassembly and assembly process of rotor scales during maintenance is cumbersome, resulting in low maintenance efficiency.

[0007] This utility model is achieved using the following technical solution: a rotor scale, including a top plate with a feed inlet and a bottom plate with a discharge outlet, a main housing is installed between the top plate and the bottom plate, the top plate is mounted on a frame through a support mechanism, a weighing mechanism is provided between the frame and the bottom plate, and a rotor assembly that can be driven by a drive motor is installed inside the main housing; the main housing includes several identical arc-shaped sub-housings, the head and tail ends of the several sub-housings are joined together to form a cylindrical main housing, and the end faces of two adjacent sub-housings are detachably fixedly connected, and a hinge mechanism is provided at some of the end faces.

[0008] With the above structure, when the rotor scale of this utility model needs maintenance, the fixed connection at the end face of the sub-shell can be released. After the upper and lower restrictions of the sub-shell are released, the sub-shell can be rotated through the hinge mechanism, so that the main shell can open an opening. Through this opening, the rotor assembly inside the rotor scale can be inspected more conveniently. After the maintenance is completed, it is only necessary to rotate the opened sub-shell back and then re-fix the end face, top and bottom, and it can be used again. This makes the disassembly and assembly process of the rotor scale more convenient during maintenance, and makes it more convenient to use, thus improving the maintenance efficiency of the rotor scale.

[0009] Preferably, there are four sub-shells and two hinge mechanisms, which are spaced apart at their mating points. The arrangement of four sub-shells and two spaced-apart hinge mechanisms ensures that each sub-shell can be opened individually, and the opening size of each sub-shell is appropriately sized.

[0010] Preferably, the hinge mechanism includes a first rotating arm fixedly connected to one end of the sub-shell, a second rotating arm hinged to the end of the first rotating arm away from the sub-shell, and a fixedly connected end of the second rotating arm away from the hinged end of the first rotating arm to the mating end of another sub-shell that mates with that end of the sub-shell. The arrangement of the first and second rotating arms facilitates rotation between the sub-shells.

[0011] Preferably, the drive motor is fixedly mounted on the top plate, and the output shaft of the drive motor is coaxially fixedly connected to a drive shaft, which passes through the top plate and the bottom plate. The rotor assembly includes a mounting body coaxially fixedly connected to the drive shaft, and a plurality of circumferentially arrayed blades are detachably fixedly connected to the mounting body. By providing several detachable blades, when a single blade needs to be adjusted, it can be disassembled for operation, eliminating space limitations and making operation more convenient. Furthermore, if a single blade is severely worn, it can be replaced individually, further improving the efficiency of rotor scale maintenance.

[0012] Preferably, an arc-shaped mounting plate is fixedly connected to one end of the blade near the mounting body. The arc-shaped mounting plate has several first through holes, and the mounting body has threaded holes corresponding to the positions of the first through holes. The mounting plate is detachably fixed to the mounting body by bolts. The mounting plate facilitates the installation of the blade and also improves the stability of the blade installation.

[0013] Preferably, the mounting plate has a positioning block protruding towards the mounting body on the side near the mounting body, and the mounting body has a positioning groove corresponding to the positioning block, with the positioning block and positioning groove being inserted into each other. By setting up the positioning block and positioning groove, when it is necessary to fix the blade, simply insert the positioning block into the corresponding positioning groove, so that the first through hole aligns with the threaded hole on the mounting body, making it easier to fix the mounting plate. Furthermore, the positioning block and positioning groove also improve the stability of the blade installation, making the force on the blade more balanced during rotation, further extending the service life of the device.

[0014] Preferably, a connecting plate is detachably fixed between two adjacent blades. The connecting plate allows the blades to support each other during rotation, further improving the stability of the device.

[0015] Preferably, the blade has a second through hole, and the two ends of the connecting plate are fixedly connected to ear plates extending away from the mounting body. The ear plates have a third through hole, and the ear plates are detachably fixed to the blade by bolts and nuts. By setting the ear plates extending outward, the connecting plate is installed through the ear plates. When the operator opens the sub-shell, the ear plates face him / her, that is, the bolts and nuts fixing the ear plates face the opening of the main shell, which makes it easier to disassemble and assemble the connecting plate.

[0016] Preferably, the support mechanism includes a support block fixedly installed on the top plate, a support cone fixedly installed on the frame, and an installation groove on the support block that mates with the support cone.

[0017] Preferably, the weighing mechanism includes a measuring frame fixedly mounted on a frame, a weighing sensor inside the measuring frame, and a support plate mounted on the bottom of the weighing sensor, with the base plate fixedly connected to the support plate. The combination of the weighing mechanism and the two support mechanisms allows the rotor scale to form a balance structure, facilitating weighing and measurement.

[0018] In summary, the beneficial effects of this utility model are as follows: by dividing the main housing into four sub-housings, the rotor scale in this device can be maintained without overall disassembly and assembly. Instead, only one sub-housing is opened, allowing the main housing to open an opening for inspecting the internal condition of the rotor scale. Furthermore, with the design of detachable blades, when a single blade needs to be cleaned or prepared, it can be removed and prepared simply through the opening on the main housing. The entire process is more convenient, resulting in higher maintenance efficiency for the rotor scale. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a rotor scale from a first-view perspective according to the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention after the partial shell is opened;

[0022] Figure 4 for Figure 2 A magnified view of a portion of area "A" in the image;

[0023] Figure 5 This is a schematic diagram of the rotor assembly in this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the blade and mounting plate in this utility model;

[0025] Figure 7 This is a schematic diagram of the connecting plate in this utility model;

[0026] Figure 8 This is a schematic diagram of the main shell structure in this utility model.

[0027] In the diagram: 1-Frame; 2-Base plate; 3-Main housing; 4-Separator plate; 5-Top plate; 6-Drive motor; 7-Feed inlet; 8-Support block; 9-Support cone; 10-Discharge outlet; 11-Rotor assembly; 12-Discharge port; 13-Measuring frame; 14-Weighing sensor; 15-Support plate; 16-Mounting body; 17-Blade; 18-Connecting plate; 19-Mounting plate; 20-Positioning block; 21-First through hole; 22-Second through hole; 23-Ear plate; 24-Third through hole; 25-Separated housing; 26-First rotating arm; 27-Rotating shaft; 28-Second rotating arm; 29-Hinge mechanism. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0031] like Figures 1 to 4 As shown, this utility model provides a rotor scale, including a top plate 5 and a bottom plate 2 arranged above and below. A main housing 3 is disposed between the top plate 5 and the bottom plate 2. A rotor assembly 11, which can be driven to rotate by a drive motor 6, is installed inside the main housing 3. The drive motor 6 is fixedly mounted on the top plate 5. A feed inlet 7 is provided on one side of the top plate 5, and a discharge outlet 10 is provided on one side of the bottom plate 2. The top plate 5 is mounted on a frame 1 by a support mechanism. A weighing mechanism for weighing is also installed on the frame 1.

[0032] In this invention, the rotor scale can be a single-layer rotor scale or a double-layer rotor scale. When it is a single-layer rotor scale, the feed inlet 7 and the discharge outlet 10 are located in opposite positions, that is, the feed inlet 7 rotates 180° and is collinear with the axis of the discharge outlet 10. At this time, the main housing 3 is a single layer.

[0033] In this embodiment, the rotor scale is a double-layer rotor scale. The axes of the inlet 7 and outlet 10 are collinear. The weighing mechanism is installed opposite to the inlet 7 and outlet 10. Two support mechanisms are provided, located on either side of the inlet 7. The main housing 3 has two layers, with a partition plate 4 between the upper and lower layers. The upper main housing 3 is detachably fixed to the top plate 5, the lower main housing 3 to the bottom plate 2, and the upper and lower main housings to the partition plate 4 via bolts and nuts. The partition plate 4 divides the rotor scale into an upper compartment and a lower compartment. A discharge port 12 is provided on the partition plate 4 to connect the upper and lower compartments. The discharge port 12 is located on the opposite side of the inlet 7 and outlet 10, meaning that the inlet 7 and outlet 10 are rotated 180° to be collinear with the axis of the discharge port 12. Both the upper and lower compartments contain rotor assemblies 11 that can be driven to rotate by a drive motor 6.

[0034] Both of the aforementioned support mechanisms include support blocks 8 fixedly mounted on the top plate 5, and support cones 9 fixedly mounted on the frame 1. The support blocks 8 have mounting grooves that mate with the support cones 9. The aforementioned weighing mechanism includes a measuring frame 13 fixedly mounted on the frame 1. A weighing sensor 14 is housed within the measuring frame 13, and a support plate 15 is mounted at the bottom of the weighing sensor 14. The base plate 2 is fixedly connected to the support plate 15. The weighing mechanism and the two support mechanisms form an isosceles triangular support structure. The aforementioned support mechanisms and weighing mechanisms are conventional prior art, and their detailed structures and installation positions can be obtained from patent documents; therefore, further details will not be provided here.

[0035] like Figure 1 , Figure 3 , Figure 8 As shown, in this embodiment, the main housing 3 includes several identical arc-shaped sub-housings 25. The ends of the several sub-housings 25 are joined together to form a cylindrical main housing 3. The ends of two adjacent sub-housings 25 are detachably fixedly connected by bolts and nuts. A hinge mechanism 29 is provided at one of the ends. Specifically, there are four sub-housings 25 and two hinge mechanisms 29. The two hinge mechanisms 29 are spaced apart at the joint.

[0036] The hinge mechanism 29 described above includes a first rotating arm 26 fixedly connected to one end of a housing 25. A rotating shaft 27 is rotatably mounted on the end of the first rotating arm 26 away from the housing 25. A second rotating arm 28 is rotatably mounted on the rotating shaft 27. The end of the second rotating arm 28 away from the rotating shaft 27 is fixedly connected to the mating end of another housing 25 that is mating with that end of the housing 25.

[0037] Since the mating points of two adjacent sub-shells 25 are closely fitted together, the hinge point for rotation between the two adjacent sub-shells 25 is moved to the outside of the main shell 3 by the arrangement of the first rotating arm 26 and the second rotating arm 28, making it easier for the sub-shells 25 to rotate out. In addition, in order to prevent the two mating surfaces from interfering with each other and causing the sub-shells 25 to be unable to rotate, the rotating holes on the first rotating arm 26 and the second rotating arm 28 can be made larger, or even oblong holes, that is, there is a gap between the rotating shaft 27 and the rotating hole, and the rotating shaft 27 can move laterally within the rotating hole. In this way, when it is necessary to open the sub-shell 25, after all the bolts and nuts on the sub-shell 25 are removed, the sub-shell 25 can be moved laterally outward first to avoid the mating surfaces of the two adjacent sub-shells 25 interfering with each other, and then the sub-shell 25 can be rotated.

[0038] Depend on Figure 3 , Figures 5 to 7As shown, since the main housing 3 is divided into four sub-housings 25, during maintenance, only one sub-housing 25 needs to be opened to observe the internal condition of the rotor scale. However, this is equivalent to opening an opening in the main housing 3. When it is necessary to adjust the blades 17 of the rotor scale, it is not convenient to do so due to space limitations. Therefore, in this embodiment, the output shaft of the drive motor 6 is coaxially fixedly connected to a drive shaft, which passes through the top plate 5 and the bottom plate 2. The rotor assembly 11 includes a mounting body 16 coaxially fixedly connected to the drive shaft. Several circumferentially arrayed blades 17 are detachably fixedly connected to the mounting body 16. Specifically, an arc-shaped mounting plate 19 is fixedly connected to one end of the blade 17 near the mounting body 16. The arc-shaped mounting plate 19 is provided with several first through holes 21. The mounting body 16 is provided with threaded holes corresponding to the positions of the first through holes 21. The mounting plate 19 is detachably fixedly connected to the mounting body 16 by bolts.

[0039] When all the mounting plates 19 are installed on the mounting body 16, the end faces of the mounting plates 19 are joined together to form a complete cylindrical shape that fits over the outside of the mounting body 16.

[0040] To facilitate the installation of the mounting plate 19 and make the installation more stable, a positioning block 20 protruding towards the mounting body 16 is provided on the side of the mounting plate 19 near the mounting body 16. The mounting body 16 is provided with a positioning groove corresponding to the positioning block 20, and the positioning block 20 is inserted into the positioning groove.

[0041] To further improve the stability of the blade 17 during rotation, a connecting plate 18 is detachably fixedly connected between two adjacent blades 17. Specifically, the blade 17 is provided with a second through hole 22, and the two ends of the connecting plate 18 are fixedly connected with ear plates 23 extending away from the mounting body 16. The ear plates 23 are provided with a third through hole 24, and the ear plates 23 and the blade 17 are detachably fixedly connected by bolts and nuts.

[0042] The operating principle of this device is as follows: When it is necessary to inspect the internal rotor assembly 11 of the rotor scale, simply remove all the bolts and nuts on one of the sub-housing housings 25 to allow the sub-housing housing 25 to move. Then, rotate the sub-housing housing 25 to open an opening in the main housing 3 for observation of the internal condition of the rotor scale. When it is found that some blades 17 need to be repaired or replaced, the connecting plate 18 on that blade 17 can be removed through the opening, and then the bolts on the mounting plate 19 corresponding to the blade 17 can be removed. At this time, the blade 17 can be pulled out. After repair, it can be reinstalled. After the blade 17 is reinstalled, rotate the sub-housing housing 25 back, and then re-secure the removed bolts and nuts to complete the inspection of the rotor scale. The entire operation does not require disassembly of the top plate 5 or the entire main housing 3, making the operation simpler and improving the efficiency of the inspection.

[0043] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A rotor scale, comprising a top plate (5) having a feed inlet (7) and a bottom plate (2) having a discharge outlet (10), a main housing (3) being installed between the top plate (5) and the bottom plate (2), the top plate (5) being mounted on a frame (1) via a support mechanism, a weighing mechanism () being provided between the frame (1) and the bottom plate (2), and a rotor assembly (11) being installed inside the main housing (3) and driven by a drive motor (6); characterized in that, The main housing (3) includes several identical arc-shaped sub-housings (25). The ends of several sub-housings (25) are joined together to form a cylindrical main housing (3). The ends of two adjacent sub-housings (25) are detachably fixedly connected, and a hinge mechanism (29) is provided at one of the ends.

2. The rotor scale according to claim 1, characterized in that, There are four sub-shells (25) and two hinge mechanisms (29), which are spaced apart at the mating point.

3. The rotor scale according to claim 2, characterized in that, The hinge mechanism (29) includes a first rotating arm (26) fixedly connected to one end of a sub-shell (25), and a second rotating arm (28) hinged to the end of the first rotating arm (26) away from the sub-shell (25). The end of the second rotating arm (28) away from the hinge end of the first rotating arm (26) is fixedly connected to the mating end of another sub-shell (25) that is mating with that end of the sub-shell (25).

4. The rotor scale according to claim 1, characterized in that, The drive motor (6) is fixedly mounted on the top plate (5). The output shaft of the drive motor (6) is coaxially fixedly connected to the drive shaft. The drive shaft passes through the top plate (5) and the bottom plate (2). The rotor assembly (11) includes a mounting body (16) coaxially fixedly connected to the drive shaft. Several circumferential array blades (17) are detachably fixedly connected to the mounting body (16).

5. The rotor scale according to claim 4, characterized in that, The blade (17) is fixedly connected to an arc-shaped mounting plate (19) at one end near the mounting body (16). The arc-shaped mounting plate (19) is provided with several first through holes (21). The mounting body (16) is provided with threaded holes corresponding to the positions of the first through holes (21). The mounting plate (19) is detachably fixedly connected to the mounting body (16) by bolts.

6. The rotor scale according to claim 5, characterized in that, The mounting plate (19) has a positioning block (20) protruding towards the mounting body (16) on one side. The mounting body (16) has a positioning groove corresponding to the positioning block (20). The positioning block (20) is inserted into the positioning groove.

7. The rotor scale according to claim 4, characterized in that, A connecting plate (18) is detachably fixed between two adjacent blades (17).

8. The rotor scale according to claim 7, characterized in that, The blade (17) is provided with a second through hole (22), and the two ends of the connecting plate (18) are fixedly connected with ear plates (23) extending in the direction away from the mounting body (16). The ear plates (23) are provided with a third through hole (24), and the ear plates (23) and the blade (17) are detachably fixedly connected by bolts and nuts.

9. The rotor scale according to claim 1, characterized in that, The support mechanism includes a support block (8) fixedly installed on the top plate (5), a support cone (9) fixedly installed on the frame (1), and an installation groove on the support block (8) that cooperates with the support cone (9).

10. The rotor scale according to claim 9, characterized in that, The weighing mechanism includes a metering frame (13) fixedly installed on the frame (1), a weighing sensor (14) is provided inside the metering frame (13), a support plate (15) is installed at the bottom of the weighing sensor (14), and the base plate (2) is fixedly connected to the support plate (15).

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