阅读说明：本技术 一种搅拌机扭矩传感器和搅拌机 (Mixer torque sensor and mixer ) 是由 王林峰 于 2021-08-04 设计创作，主要内容包括：本发明提供了一种搅拌机扭矩传感器和采用该传感器的搅拌机,该传感器包括弹性体、应变计、FCB和电缆组件,所述FCB分别电连接所述应变计和电缆组件,所述应变计和FCB设置在所述弹性体上,所述弹性体中设置有容置和安装搅拌机的电机的安装孔,所述弹性体的中心线与所述电机的中心轴线,所述电机的连接轴从所述弹性体的下端部露出。本发明所提供的搅拌机扭矩传感器将传感器和电机集成在一起,即把电机直接安装在传感器内部,如此简化了传感器和电机组合的结构,且容易实现电机的中心轴线与传感器的中心相一致,进而保证了传感器的精度度和灵敏度,使得传感器可以采集到更精确的电机转动时扭力值。(The invention provides a torque sensor of a stirrer and the stirrer adopting the torque sensor, wherein the torque sensor comprises an elastic body, a strain gauge, an FCB (fiber channel bus) and a cable assembly, the FCB is electrically connected with the strain gauge and the cable assembly respectively, the strain gauge and the FCB are arranged on the elastic body, a mounting hole for accommodating and mounting a motor of the stirrer is arranged in the elastic body, the central line of the elastic body and the central axis of the motor are arranged, and a connecting shaft of the motor is exposed from the lower end part of the elastic body. The torque sensor of the stirrer integrates the sensor and the motor together, namely the motor is directly arranged in the sensor, so that the combined structure of the sensor and the motor is simplified, the central axis of the motor is easy to be consistent with the center of the sensor, the accuracy and the sensitivity of the sensor are further ensured, and the sensor can acquire a more accurate torque value when the motor rotates.)

1. A mixer torque sensor, characterized in that: the elastic body is provided with a mounting hole for accommodating and mounting a motor of a stirrer, the center line of the elastic body is connected with the central axis of the motor, and a connecting shaft of the motor is exposed from the lower end part of the elastic body.

2. A mixer torque sensor in accordance with claim 1, wherein: the whole elastomer is of a cylindrical structure, and the mounting holes are round holes distributed along the center line of the cylindrical structure.

3. A mixer torque sensor in accordance with claim 2, wherein: the cylindrical structure includes from last inserting part, holding portion and the fixed part that connects gradually extremely down, inserting part and fixed part are the flat cylinder type respectively, the holding portion is whole to be long cylinder type, be provided with patchhole, holding hole respectively in inserting part, holding portion and the fixed part and dodge the hole, patchhole, holding hole and dodge the hole and communicate in proper order, patchhole, holding hole and dodge the hole and constitute the mounting hole, the front end housing of motor with the up end fixed connection of fixed part, just the connecting axle of motor by it stretches out outside the elastomer in the hole to dodge.

4. A mixer torque sensor according to claim 3, wherein: the patchhole with the diameter in holding the hole is the same, the diameter of dodging the hole is greatly less than the diameter in patchhole and holding the hole, just the diameter of dodging the hole is still less than the diameter of the shell of motor.

5. A mixer torque sensor according to claim 3, wherein: the holding part comprises an upper strain area, a lower strain area and a reinforcing area connected with the upper strain area and the lower strain area, the upper strain area and the lower strain area are respectively thin plates distributed in a plurality of rings, the reinforcing area is an arc-shaped plate distributed in a plurality of rings and forms a plurality of the upper strain areas, one ends of the thin plates are connected with one ends of the arc-shaped plates forming the reinforcing area in a one-to-one correspondence manner to form a plurality of the upper strain areas, the other ends of the thin plates are fixedly connected with the lower end face of the inserting part to form a plurality of the lower strain areas, one ends of the thin plates are connected with the other ends of the arc-shaped plates forming the reinforcing area in a one-to-one correspondence manner to form a plurality of the lower strain areas, and the other ends of the thin plates are fixedly connected with the upper end face of the fixing part.

6. A mixer torque sensor according to claim 5, wherein: the strain gage is attached to the upper strain zone.

7. A mixer torque sensor according to claim 3, wherein: the FCB is attached to the hole wall of the insertion hole; and/or the front end cover of the motor is fixedly connected with the upper end face of the fixing part through a bolt.

8. A mixer torque sensor in accordance with claim 1, wherein: and a cover shell is arranged outside the elastic body.

9. A mixer torque sensor in accordance with claim 8, wherein: the periphery of the bottom end of the elastic body is connected with an overload protection pin, a through hole allowing the overload protection pin to penetrate through is formed in the housing, and a set deformation gap is formed between the hole wall of the through hole and the periphery of the overload protection pin.

10. A mixer, its characterized in that: comprising a motor, a stir bar connected to the motor, and a mixer torque sensor according to any of claims 1-9, the motor being mounted in the mounting hole.

Technical Field

The invention relates to the technical field of sensors, in particular to a torque sensor of a stirrer and the stirrer.

Background

With the influence of global epidemic situation, people have unprecedented attention to the medical industry, wherein the stirrer for stirring the medicament formula is also developed greatly with the explosive growth of the medical industry. The existing stirrer mainly comprises a stirring rod, a motor driving the stirring rod to rotate and a sensor for collecting a torsion value when the motor rotates, wherein one end of the sensor is fixedly connected with the upper part of the motor, the other end of the sensor is fixed on an installation table board, when the motor rotates, the sensor generates torsion, and senses the torsion value.

However, the existing stirrer has a long assembly structure, and when a motor, a sensor and a stirring rod are assembled if stirring data with higher precision is required, the requirement on the central position degree is high, and the assembly difficulty is high.

Disclosure of Invention

The invention aims to provide a torque sensor of a stirrer and the stirrer, so as to overcome the defects of the prior art.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the invention discloses a torque sensor of a stirrer, which comprises an elastic body, a strain gauge, an FCB (fiber channel bus) and a cable assembly, wherein the FCB is electrically connected with the strain gauge and the cable assembly respectively, the strain gauge and the FCB are arranged on the elastic body, a mounting hole for accommodating and mounting a motor of the stirrer is formed in the elastic body, the central line of the elastic body and the central axis of the motor are arranged, and a connecting shaft of the motor is exposed from the lower end part of the elastic body.

Preferably, the elastomer is of a cylindrical structure as a whole, and the mounting holes are round holes distributed along the center line of the cylindrical structure.

Further preferably, the cylinder structure includes from last to inserting portion, holding portion and the fixed part that connects gradually down, inserting portion and fixed part are the flat cylinder type respectively, the holding portion is whole to be the long cylinder type, be provided with patchhole, holding hole and dodge the hole in inserting portion, holding portion and the fixed part respectively, patchhole, holding hole and dodge the hole and communicate in proper order, patchhole, holding hole and dodge the hole and constitute the mounting hole, the front end housing of motor with the up end fixed connection of fixed part, just the connecting axle of motor by it stretches out outside the elastomer in the hole to dodge.

Still further preferably, the patchhole with the diameter in holding the hole is the same, the diameter of dodging the hole is less than the diameter in patchhole and the holding hole, just the diameter in dodging the hole still is less than the diameter of the shell of motor.

Further preferably, the accommodating portion includes an upper strain region, a lower strain region and a reinforcing region connecting the upper strain region and the lower strain region, the upper strain region and the lower strain region are respectively a plurality of thin plates distributed in an annular shape, the reinforcing region is a plurality of arc-shaped plates distributed in an annular shape, one end of each of the plurality of thin plates constituting the upper strain region is connected to one end of each of the plurality of arc-shaped plates constituting the reinforcing region in a one-to-one correspondence manner, the other end of each of the plurality of thin plates constituting the upper strain region is fixedly connected to the lower end face of the insertion portion, one end of each of the plurality of thin plates constituting the lower strain region is connected to the other end of each of the plurality of arc-shaped plates constituting the reinforcing region in a one-to-one correspondence manner, and the other end of each of the plurality of thin plates constituting the lower strain region is fixedly connected to the upper end face of the fixing portion.

Further preferably, the strain gauge is attached to the upper strain region.

Further preferably, the FCB is attached to a hole wall of the insertion hole.

Further preferably, the front end cover of the motor is fixedly connected with the upper end face of the fixing part through a bolt.

Preferably, a cover is disposed outside the elastic body.

Further preferably, the outer periphery of the bottom end of the elastic body is connected with an overload protection pin, the housing is provided with a through hole allowing the overload protection pin to pass through, and a set deformation gap is formed between the hole wall of the through hole and the outer periphery of the overload protection pin.

The invention also discloses a stirrer, which comprises a motor, a stirring rod connected with the motor and the stirrer torque sensor, wherein the motor is arranged in the mounting hole.

Compared with the prior art, the invention has the advantages that:

1) the torque sensor of the stirrer integrates the sensor and the motor together, namely the motor is directly arranged in the sensor, so that the combined structure of the sensor and the motor is simplified, the central axis of the motor is easy to be consistent with the central line of the sensor, the accuracy and the sensitivity of the sensor are further ensured, and the sensor can acquire a more accurate torque value when the motor rotates.

2) The invention provides a strain gauge with high precision, which ensures the precision of the sensor;

3) the sensor provided by the invention is closely provided with the overload protection pin, and the overload protection function is carried out on the elastic body, so that the elastic body is prevented from generating plastic deformation.

4) This agitator is because of using foretell sensor, and consequently torsion value when can gathering more accurate motor and rotate, and measurement accuracy is higher, and stability is better, and measuring range is wider, and the equipment mode of motor and sensor has simplified holistic structure, also is more pleasing to the eye in appearance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a first schematic structural diagram of a torque sensor and a motor of a blender according to an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram of a torque sensor and a motor of a blender according to an embodiment of the present invention;

FIG. 3 is a first schematic view (with the cover removed) of a torque sensor and motor of a blender according to an embodiment of the present invention;

FIG. 4 is a second schematic structural view (with the cover removed) of a torque sensor and a motor of a blender according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an elastomer disclosed in the embodiment of the invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1:

referring to fig. 1-5, embodiment 1 of the present invention discloses a torque sensor for a mixer, including an elastic body 1, a strain gauge 2, an FCB3, and a cable assembly, wherein the FCB3 electrically connects the strain gauge 2 and the cable assembly, the strain gauge 2 and the FCB3 are disposed on the elastic body 1, a mounting hole for accommodating and mounting a motor K of the mixer is disposed in the elastic body 1, a center line of the elastic body 1 and a center line of the motor K are disposed, a connecting shaft K1 of the motor K is exposed from a lower end portion of the elastic body 1, and the connecting shaft K1 of the motor K is connected to a mixing rod for mixing.

Inside should go into the sensor with motor K direct mount, with sensor direct mount back, the elastomer 1 of sensor receives stirring rod reaction moment of torsion and warp when motor K stirring, and strainometer 2 senses and can send analog signal to cable assembly through Wheatstone bridge after warping, and later stage cable assembly changes the digit and connects the amplifier, transmits to analytical instrument.

The torque sensor of the stirring machine provided by the embodiment of the invention integrates the sensor and the motor K together, namely, the motor K is directly arranged in the sensor, so that the combined structure of the sensor and the motor K is simplified, the central axis of the motor K is easy to be consistent with the central line of the sensor, the precision and the sensitivity of the sensor are further ensured, and the sensor can acquire a more accurate torsion value when the motor K rotates.

The elastic body 1 is integrally of a cylindrical structure, and the mounting holes are round holes distributed along the center line of the cylindrical structure. The cylindrical structure includes from last to inserting portion 11 that connects gradually down, holding portion 12 and fixed part 13, inserting portion 11 and fixed part 13 are the flat cylinder type respectively, holding portion 12 is whole to be the long cylinder type, inserting portion 11, be provided with patchhole 14 in holding portion 12 and the fixed part 13 respectively, holding hole 15 and dodge hole 16, patchhole 14, holding hole 15 and dodge hole 16 and communicate in proper order, patchhole 14, holding hole 15 and dodge hole 16 and constitute foretell mounting hole, motor K's front end housing passes through bolt fixed connection with the up end of fixed part 13, and motor K's connecting axle K1 stretches out outside elastic body 1 in dodging hole 16. The motor K is fixedly connected with the fixing part 13 of the elastic body 1 through the front end cover, and the installation position is preset, so that the central line axis of the motor K and the central line of the elastic body 1 are easily ensured to be on the same straight line.

The diameter of the insertion hole 14 is the same as that of the accommodating hole 15, so that the motor K can be conveniently placed in the elastic body 1, the diameter of the avoiding hole 16 is smaller than that of the insertion hole 14 and that of the accommodating hole 15, and the diameter of the avoiding hole 16 is smaller than that of the shell of the motor K, so that the upper end face of the fixing part 13 is ensured to have a sufficient fixing area for fixing the motor K.

The accommodating portion 12 includes an upper strain region 121, a lower strain region 122, and a reinforcing region 123 connecting the upper strain region 121 and the lower strain region 122, where the upper strain region 121 and the lower strain region 122 are respectively a plurality of thin plates distributed in an annular shape, the reinforcing region 123 is a plurality of arc-shaped plates distributed in an annular shape, one end of each of the plurality of thin plates constituting the upper strain region 121 is connected to one end of each of the plurality of arc-shaped plates constituting the reinforcing region 123 in a one-to-one correspondence, the other end of each of the plurality of thin plates constituting the upper strain region 121 is fixedly connected to the lower end surface of the insertion portion 11, one end of each of the plurality of thin plates constituting the lower strain region 122 is connected to the other end of each of the plurality of arc-shaped plates constituting the reinforcing region 123 in a one-to-one correspondence, and the other ends of the plurality of thin plates constituting the lower strain region 122 are fixedly connected to the upper end surface of the fixing portion 13.

In fact, during the processing, the thin plate is formed by cutting a plurality of waist-shaped grooves on the hollow cylindrical structure (the accommodating part 12), the thin plate is formed between two adjacent waist-shaped grooves, a plurality of square-shaped grooves are formed on the hollow cylindrical structure (the accommodating part 12), and the reinforcing area 123 is formed between two adjacent square-shaped grooves, so that the design scheme is convenient for final processing and forming, and the processing cost is reduced.

Go up strain area 121 and strain area 122 and adopt the sheet metal of a plurality of annular distributions, can guarantee that elastomer 1 takes place elastic deformation under the exogenic action, increase elastomer 1's sensitivity, go up and connect between strain area 121 and the strain area 122 down and strengthen the district 123, can increase strain area's intensity, avoid elastomer 1 to take place plastic deformation and lose effect.

The strain gage 2 is attached to the upper strain region 121, but the strain gage 2 may also be installed on the lower strain region 122, or both the upper strain region 121 and the lower strain region 122, and only the upper strain region 121 is installed, so that the installation is convenient. The FCB3 is attached to the hole wall of the insertion hole 14, i.e., the FCB3 is provided around the inside of the circular arc of the insertion hole 14.

The elastic body 1 is provided with a cover 5 on the outside, and the elastic body 1 can be protected by the cover 5 and is more beautiful in appearance. The periphery of the bottom end of the elastic body 1 is connected with an overload protection pin 4, specifically, the periphery of the fixed part of the elastic body 1 is connected with two overload protection pins 4 which are oppositely arranged, the housing 5 is provided with a through hole 51 which allows the overload protection pin 4 to pass through, and a set deformation gap is arranged between the hole wall of the through hole 51 and the periphery of the overload protection pin 4. Under 200% rated torque, the elastomer takes place the maximum deformation volume, and the position of overload protection pin 4 changes along with the deformation of elastomer, changes to the downthehole wall butt with perforation 51 to play and prevent elastomer 1 to continue to take place deformation, overload protection pin 4 can carry out overload protection function to elastomer 1 like this, avoids elastomer 1 to take place plastic deformation.

Example 2:

referring to fig. 1-5, embodiment 2 of the present invention discloses a mixer, which includes a motor K, a mixing rod connected to the motor K, and the above-mentioned mixer torque sensor, wherein the motor K is installed in an installation hole, wherein the installation hole is composed of an insertion hole 14, a receiving hole 15, and a relief hole 16, and the specific installation manner is as described above. This agitator is because of using foretell sensor, and consequently torsion value when can gathering more accurate motor and rotate, and measurement accuracy is higher, and stability is better, and measuring range is wider, and the equipment mode of motor and sensor has simplified holistic structure, also is more pleasing to the eye in appearance.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.