Weighing structure of double-tube spiral metering scale

Abstract

The utility model discloses a weighing structure of a double-tube spiral metering scale, and relates to the technical field of spiral metering scales, the weighing structure comprises a rack and a weighing mechanism arranged on the rack and used for weighing a second conveying mechanism, and the rack is also provided with a first conveying mechanism used for conveying materials to the second conveying mechanism; the weighing mechanism comprises a weighing seat, the weighing seat is arranged on the rack through a plurality of weighing sensors, and the second conveying mechanism is arranged on the weighing seat; the rack comprises a base and a support, a first connecting base is arranged on the first conveying mechanism and fixed to the support through bolts, a plurality of support legs are fixed to the support through bolts, and the support legs are fixedly arranged on the base through bolts. Therefore, the problems of the existing spiral metering scale are solved, the metering precision of the metering scale is improved, the weighing error is reduced, and the metering loss is reduced.

Description

Technical Field

[0001] This application relates to the field of screw weighing scale technology, and in particular to the weighing structure of a double-tube screw weighing scale. Background Technology

[0002] A screw feeder is a device used for conveying and measuring particulate materials. It is widely used in modern industrial production, especially in the chemical, food, and feed industries.

[0003] like Figure 1 As shown, existing screw weighing scales generally include a support, an upper screw tube, and a lower screw tube. The upper screw tube is fixed on the support and is mainly responsible for conveying materials to the lower screw tube. The lower screw tube is mainly responsible for dynamic metering and conveying the materials out.

[0004] However, the existing structure of the double-tube screw weighing scale makes it impossible for the load cell to weigh the lower screw tube effectively. There is connection stress between the upper and lower screw tubes and between the load cell and the lower screw tube, which interferes with the normal weighing of the load cell. This results in a large weighing error in the load cell during the measurement process, causing measurement loss. Utility Model Content

[0005] To address the problems existing in the current screw weighing scales, improve the weighing accuracy, reduce weighing errors, and minimize weighing losses, this application provides a weighing structure for a double-tube screw weighing scale.

[0006] The weighing structure of the double-tube screw weighing scale provided in this application adopts the following technical solution.

[0007] The weighing structure of the double-tube screw weighing scale includes: a frame and a weighing mechanism mounted on the frame for weighing a second conveying mechanism. The frame is also provided with a first conveying mechanism for conveying materials to the second conveying mechanism.

[0008] The weighing mechanism includes a weighing base, which is mounted on a frame via a plurality of weighing sensors, and the second conveying mechanism is mounted on the weighing base;

[0009] The frame includes a base and a support. The first conveying mechanism is provided with a first connecting seat, which is fixed to the support by bolts. The support is fixed with a plurality of support legs by bolts, and the support legs are fixed to the base by bolts.

[0010] By adopting the technical scheme, the first conveying mechanism is used for conveying material to the second conveying mechanism, and can play a role in conveying and stabilizing flow, thereby improving material conveying stability, reducing weighing deviation, and further improving measurement accuracy; the second conveying mechanism is arranged on the weighing seat, the weighing seat only contacts the weighing sensor, the weighing sensor weighs the second conveying mechanism as a whole, and measurement of the material conveyed by the second conveying mechanism is realized; and the connection mode of the bolt is simple and reliable, and facilitates assembly and disassembly.

[0011] Optionally, the first conveying mechanism comprises a first feeding pipe and a first screw rod arranged in the first feeding pipe, the first screw rod is driven to rotate by a first motor arranged on the first feeding pipe, one end of the first feeding pipe is provided with a first feeding opening, and the other end of the first feeding pipe is provided with a first discharging opening.

[0012] By adopting the technical scheme, the first feeding pipe and the first screw rod are arranged, the first screw rod rotates under the driving of the first motor, material screw conveying is realized, and continuous conveying of the material is realized, and the material conveying flow stability is good.

[0013] Optionally, the second conveying mechanism comprises a second feeding pipe and a second screw rod arranged in the second feeding pipe, the second screw rod is driven to rotate by a second motor arranged on the second feeding pipe, the other end of the second feeding pipe is provided with a second feeding opening, the second feeding opening is located below the first discharging opening, and one end of the second feeding pipe is provided with a second discharging opening.

[0014] By adopting the technical scheme, the second feeding pipe and the second screw rod are arranged, the second screw rod rotates under the driving of the second motor, material screw conveying is realized, continuous conveying of the material is realized, the material conveying flow stability is good, and the second feeding opening is located below the first discharging opening, so that contactless material conveying and transmission can be realized, and the weighing error of the sensor caused by contact is avoided.

[0015] Optionally, the first discharging opening and the second feeding opening are connected through a flexible pipe.

[0016] By adopting the technical scheme, the flexible pipe can play a role in guiding the material, avoids scattering of the material, the flexible pipe is soft and deformable, hard connection between the first feeding pipe and the second feeding pipe is avoided, the weighing of the second conveying mechanism is reduced, and the measurement error of the weighing sensor is reduced.

[0017] Optionally, the base comprises a rectangular frame composed of a profile material, and the bottom of the base is provided with a plurality of foot supports.

[0018] By adopting the technical scheme, the base and the foot support are arranged to effectively and stably support, the foot support is adjustable, the levelness of the base can be adjusted, and the weighing and measuring accuracy is ensured.

[0019] Optionally, the weighing sensor is fixed on the base, the base is provided with a supporting block, the supporting block is provided with an arc-shaped slot, and the ball is placed in the arc-shaped slot.

[0020] By adopting the technical scheme, the ball is arranged above and below the weighing seat and the arc-shaped slot, the weighing seat and the weighing sensor are prevented from being hard connected, stress interference is avoided, the arc-shaped slot guides the ball, the weighing seat and the ball are prevented from shaking, the stability of the weighing seat is improved, and the weighing and measuring accuracy is improved.

[0021] Optionally, one end of the base is provided with one weighing sensor, and the other end of the base is provided with two weighing sensors.

[0022] By adopting the technical scheme, the three weighing sensors uniformly support the weighing seat, the support stability is ensured, and the weighing and measuring accuracy is improved.

[0023] Optionally, the weighing seat comprises a rectangular frame composed of a profile, the second connecting seat is arranged on the second conveying mechanism, and the second connecting seat is fixed on the weighing seat by bolts.

[0024] By adopting the technical scheme, the connection mode of the bolts is simple and reliable, and the weighing seat is convenient to install and disassemble.

[0025] Optionally, the foot support comprises a support piece, a connecting piece and an adjusting piece, the support piece is in the shape of a circular truncated cone and is used for supporting on the ground, the connecting piece comprises a connecting rod provided with external threads, a hexagonal nut is threadedly connected to the connecting rod, a long slot is radially and axially formed in the connecting rod, the adjusting piece comprises a penetrating rod, limit plates are arranged at both ends of the penetrating rod, the distance between the two limit plates is equal to the distance between the opposite surfaces of the hexagonal nut, a guide shaft is arranged at the bottom of the penetrating rod, a guide hole is formed downward at the axial position of the connecting rod at the bottom of the long slot, the guide shaft is matched with the hole shaft of the guide hole, and a spring is sleeved on the guide shaft between the bottom of the long slot and the penetrating rod.

[0026] By adopting the technical scheme, the foot support can be adjusted by adjusting the hexagonal nut, the support height is adjusted, the levelness of the base is adjusted by cooperation of the plurality of foot supports, the rotation of the hexagonal nut is limited by the penetrating rod and the limit plates, the hexagonal nut is prevented from loosening, the support stability is ensured, and the weighing and measuring accuracy is improved.

[0027] To sum up, the present application at least includes the following advantages:

[0028] 1、The first conveying mechanism of the present application is used for conveying materials to the second conveying mechanism, which can play the role of conveying and stabilizing the flow, help to improve the material conveying stability, reduce the weighing deviation, and further improve the metering accuracy; the second conveying mechanism is arranged on the weighing seat, the weighing seat only contacts the weighing sensor, the weighing sensor weighs the second conveying mechanism as a whole, and the metering of the material conveyed by the second conveying mechanism is realized;

[0029] 2、The second inlet of the present application is located below the first outlet, and the first outlet and the second inlet are connected through a flexible pipe. Through the connection of the flexible pipe, the material can be guided to avoid scattering, and the flexible pipe is soft and deformable, which avoids the hard connection between the first feeding pipe and the second feeding pipe, reduces the weighing influence on the second conveying mechanism, and reduces the metering error of the weighing sensor;

[0030] 3、The present application is provided with a supporting block and a ball, the upper and lower parts of the ball are respectively in contact with the weighing seat and the arc-shaped groove, the hard connection between the weighing seat and the weighing sensor is avoided, the stress interference is avoided, the ball is guided through the arc-shaped groove, the shaking of the weighing seat and the ball is avoided, the stability of the weighing seat is improved, and the weighing accuracy is improved;

[0031] 4、The present application is provided with a base and a foot support, which can effectively and stably support, the foot support can be adjusted, the levelness of the base can be adjusted, and the weighing accuracy is ensured; the foot support can be adjusted by adjusting the hexagonal nut, the support height is adjusted, the levelness of the base is adjusted by the cooperation of the plurality of foot supports, the rotation of the hexagonal nut is limited by the penetration of the stem and the limiting plate, the anti-loose function of the hexagonal nut is realized, the support stability is ensured, and the weighing accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0033] Figure 1 is a schematic view of the structure of the existing spiral weighing scale.

[0034] Figure 2 is a schematic view of the structure of the double-pipe spiral weighing scale.

[0035] Figure 3 is Figure 2 is a schematic view of a local enlarged structure of the middle part A.

[0036] Figure 4 is a schematic view of a ground support structure.

[0037] Figure 5 is a schematic view of a ground support structure from a top view.

[0038] Figure 6 is Figure 5 is a schematic view of a sectional structure along the section line A-A.

[0039] BRIEF DESCRIPTION OF DRAWINGS: 1, first feeding pipe; 2, first motor; 3, first inlet; 4, first outlet; 5, second feeding pipe; 6, second motor; 7, second inlet; 8, second outlet; 9, flexible pipe; 10, base; 11, support; 12, first connecting seat; 13, support leg; 14, ground support; 15, support piece; 16, connecting rod; 17, hexagonal nut; 18, long notch; 19, through rod; 20, limiting plate; 21, guide shaft; 22, guide hole; 23, spring; 24, weighing seat; 25, weighing sensor; 26, second connecting seat; 27, supporting block; 28, arc-shaped slot; 29, ball. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0041] The following will be described in detail with reference to the drawings in the embodiments of the present application. Figures 2 to 6 The present application will be described in further detail.

[0042] The weighing structure of the double-pipe spiral metering scale is disclosed in the embodiments of the present application.

[0043] With reference to Figures 2 to 6 , the weighing structure of the double-pipe spiral metering scale comprises a rack, a first conveying mechanism, a second conveying mechanism and a weighing mechanism.

[0044] The first conveying mechanism comprises a first feeding pipe 1 and a first screw rod arranged in the first feeding pipe 1, the first screw rod is arranged to rotate by a first motor 2 arranged on the first feeding pipe 1, the first motor 2 can also be fixed on the support 11, one end of the first feeding pipe 1 is provided with a first feeding port 3, and the other end of the first feeding pipe 1 is provided with a first discharging port 4. Through the arrangement of the first feeding pipe 1 and the first screw rod, the first screw rod rotates under the driving of the first motor 2, realizes spiral conveying of the material, realizes continuous conveying of the material, and the material conveying flow stability is good.

[0045] The second conveying mechanism comprises a second feeding pipe 5 and a second screw rod arranged in the second feeding pipe 5, the second screw rod is arranged to rotate by a second motor 6 arranged on the second feeding pipe 5, the other end of the second feeding pipe 5 is provided with a second feeding port 7, the second feeding port 7 is located below the first discharging port 4, and one end of the second feeding pipe 5 is provided with a second discharging port 8. Through the arrangement of the second feeding pipe 5 and the second screw rod, the second screw rod rotates under the driving of the second motor 6, realizes spiral conveying of the material, realizes continuous conveying of the material, the material conveying flow stability is good, and the second feeding port 7 is located below the first discharging port 4, so that the material conveying and transmission can be realized without contact, and the weighing error of the sensor caused by contact is avoided.

[0046] The first discharging port 4 and the second feeding port 7 are connected through a flexible pipe 9, the flexible pipe 9 can play a role of guiding the material, avoids scattering of the material, meanwhile, the flexible pipe 9 is soft and deformable, hard connection between the first feeding pipe 1 and the second feeding pipe 5 is avoided, the weighing influence on the second conveying mechanism is reduced, and the measurement error of the weighing sensor 25 is reduced.

[0047] The rack comprises a base 10 and a support 11, the first feeding pipe 1 is fixedly provided with a first connecting seat 12 at the bottom, the first connecting seat 12 is fixed on the support 11 through bolts, the support 11 is fixedly provided with four support legs 13 through bolts, and the four support legs 13 are fixedly arranged on the base 10 through bolts. The connection mode of the bolts is simple and reliable, and assembly and disassembly are facilitated.

[0048] The base 10 comprises a rectangular frame composed of a profile, and the bottom of the base 10 is provided with four foot supports 14, through the arrangement of the base 10 and the foot supports 14, effective and stable support can be achieved, the foot supports 14 have adjustability, the levelness of the base 10 can be adjusted, and the accuracy of weighing and measurement is ensured.

[0049] The ground support 14 comprises a support 15, a connecting piece, and an adjusting piece, the support 15 is in the shape of a circular truncated cone and is used for supporting on the ground, the connecting piece comprises a connecting rod 16 provided with external threads, a hexagonal nut 17 is threadedly connected to the connecting rod 16, a long slot 18 is radially and axially formed in the connecting rod 16, the adjusting piece comprises a through rod 19 penetrating through the long slot 18, limit plates 20 are arranged at two ends of the through rod 19, the upper ends of the limit plates 20 are outwardly and obliquely bent, the distance between the two limit plates 20 is equal to the distance between the opposite surfaces of the hexagonal nut 17, a guide shaft 21 is arranged at the bottom of the through rod 19, a guide hole 22 is formed in the bottom of the connecting rod 16 at the position of the shaft center of the long slot 18, the guide shaft 21 is axially matched with the guide hole 22, and a spring 23 is sleeved on the guide shaft 21 between the bottom of the long slot 18 and the lower portion of the through rod 19.

[0050] The ground support 14 can be adjusted by adjusting the hexagonal nut 17, the height of the support can be adjusted, the horizontal level of the base 10 can be adjusted by the cooperation of the plurality of ground supports 14, the rotation of the hexagonal nut 17 can be limited by the through rod and the limit plates 20, the hexagonal nut 17 is prevented from loosening, the stability of the support is ensured, and the weighing accuracy is improved. Under the elastic force of the spring 23, the through rod 19 can be always pushed upward, the limit plates 20 are prevented from sliding downward and being separated from the hexagonal nut 17. When adjustment is needed, the through rod 19 is pushed downward, the limit plates 20 are separated from the hexagonal nut 17, the hexagonal nut can be adjusted at this time, after the hexagonal nut is tightened after adjustment, the limit plates 20 are pushed upward, the limit plates 20 are matched with the hexagonal nut 17, the rotation of the hexagonal nut 17 is limited, and the stability of the height adjustment support is ensured.

[0051] The weighing mechanism comprises a weighing base 24, the weighing base 24 is arranged on the base 10 by three weighing sensors 25.

[0052] The weighing base 24 comprises a rectangular frame composed of a profile, the bottom of the second feeding pipe 5 is provided with a second connecting seat 26, the second connecting seat 26 is fixedly arranged on the weighing base 24 by bolts, the connection by the bolts is simple and reliable, and the weighing base 24 is convenient to install and disassemble.

[0053] The weighing sensor 25 is fixed on the base 10, the weighing sensor 25 is provided with a supporting block 27, the supporting block is provided with an arc-shaped slot 28, a ball 29 is arranged in the arc-shaped slot 28, the ball 29 can be a hard metal ball, the weighing base 24 is arranged on the ball 29, the upper and lower portions of the ball 29 are respectively abutted with the weighing base 24 and the arc-shaped slot 28 by the arrangement of the supporting block 27 and the ball 29, the hard connection between the weighing base 24 and the weighing sensor 25 is avoided, stress interference is avoided, the ball 29 is guided by the arc-shaped slot 28, the weighing base 24 and the ball 29 are prevented from shaking, the stability of the weighing base 24 is improved, and the weighing accuracy is improved.

[0054] The one end of the base 10 is provided with a weighing sensor 25, and the other end of the base 10 is provided with two weighing sensors 25. The three weighing sensors 25 uniformly support the weighing seat 24, guarantee the support stability, and help to improve the weighing measurement precision.

[0055] The first conveying mechanism is used for conveying materials to the second conveying mechanism, can play the roles of conveying and stabilizing the flow, helps to improve the material conveying stability, reduces the weighing deviation, and further improves the measurement precision; the second conveying mechanism is arranged on the weighing seat 24, the weighing seat 24 only has contact with the weighing sensor 25, the weighing sensor 25 weighs the whole of the weighing seat 24 and the second conveying mechanism, and realizes the measurement of the materials conveyed by the second conveying mechanism.

[0056] In the description of the utility model, it is understood that the terms "bottom", "two ends", "below", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In the description of the utility model, unless otherwise specified and limited, it is necessary to explain that the term "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, and can be the communication between two elements, can be directly connected, or indirectly connected through an intermediate medium, and for ordinary skilled in the art, the specific meaning of the above-mentioned term can be understood according to the specific situation.

[0057] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. Weighing structure of a double tube spiral metering scale, characterized in that, Include: Frame and weighing mechanism arranged on the frame for weighing the second conveying mechanism, the frame is also provided with a first conveying mechanism for conveying materials to the second conveying mechanism; The weighing mechanism comprises a weighing seat, the weighing seat is arranged on the frame by a plurality of weighing sensors, and the second conveying mechanism is arranged on the weighing seat; The frame comprises a base and a support, the first connecting seat is arranged on the first conveying mechanism, the first connecting seat is fixed on the support by bolts, a plurality of support legs are fixed on the support by bolts, and the support legs are fixed on the base by bolts.

2. The weighing structure of a double tube spiral metering scale according to claim 1, characterized in that, The first conveying mechanism comprises a first feeding pipe and a first screw rod arranged in the first feeding pipe, the first screw rod is rotatably arranged by a first motor arranged on the first feeding pipe, one end of the first feeding pipe is provided with a first feeding port, and the other end of the first feeding pipe is provided with a first discharging port.

3. The weighing structure of a double tube spiral metering scale according to claim 2, characterized in that, The second conveying mechanism comprises a second feeding pipe and a second screw rod arranged in the second feeding pipe, the second screw rod is rotatably arranged by a second motor arranged on the second feeding pipe, the other end of the second feeding pipe is provided with a second feeding port, the second feeding port is located below the first discharging port, and one end of the second feeding pipe is provided with a second discharging port.

4. The weighing structure of a double tube spiral metering scale according to claim 3, characterized in that, The first discharging port and the second feeding port are connected by a flexible pipe.

5. The double tube spiral metering scale weighing structure according to claim 1, characterized in that, The base comprises a rectangular frame composed of profiles, and the bottom of the base is provided with a plurality of foot supports.

6. The double tube spiral metering scale of claim 1, wherein, The weighing sensor is fixed on the base, the weighing sensor is provided with a supporting block, an arc-shaped groove is formed in the supporting block, a ball is placed in the arc-shaped groove, and the weighing seat is placed on the ball.

7. The double tube spiral metering scale weighing structure according to claim 1, characterized in that, One end of the base is provided with one weighing sensor, and the other end of the base is provided with two weighing sensors.

8. The double tube spiral metering scale weighing structure according to claim 1, characterized in that, The weighing seat comprises a rectangular frame composed of profiles, and the second connecting seat is arranged on the second conveying mechanism and fixed on the weighing seat by bolts.

9. The double tube spiral metering scale weighing structure according to claim 5, characterized in that, The foot support comprises a support, a connecting piece and an adjusting piece, the support is in the shape of a circular truncated cone and is used for supporting on the ground, the connecting piece comprises a connecting rod provided with external threads, a hexagonal nut is threadedly connected to the connecting rod, a long slot is radially formed in the connecting rod and axially formed, the adjusting piece comprises a penetrating rod, limit plates are arranged at both ends of the penetrating rod, the distance between the two limit plates is equal to the distance between the opposite surfaces of the hexagonal nut, a guide shaft is arranged at the bottom of the penetrating rod, a guide hole is formed downward at the bottom of the connecting rod shaft, the guide shaft is matched with the guide hole, and a spring is sleeved on the guide shaft between the bottom of the penetrating rod and the bottom of the long slot.

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