Position detection structure of sample feeding reversing device and sample feeding reversing device

Abstract

The utility model provides a position detection structure of a sample feeding reversing device. The position detection structure comprises a driving assembly and a detection assembly, the driving assembly comprises a motor with an encoder and a transmission mechanism connected with the motor, and the transmission mechanism is connected with the reversing assembly so that the motor can drive a connecting bent pipe in the reversing assembly to rotate. The detection assembly comprises a mounting bracket, a position sensor and a sensing piece; the position sensors are arranged on the mounting bracket and are used for detecting the position of the sensing piece, the number of the position sensors is multiple, and the position sensors and the output pipelines are arranged in a one-to-one correspondence mode; the induction piece is connected with the reversing assembly, and the induction piece can synchronously rotate along with the connecting bent pipe. Meanwhile, the utility model further provides a sample feeding reversing device. Compared with the prior art, the position detection structure of the sample feeding reversing device and the sample feeding reversing device can improve the positioning accuracy of the connecting bent pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic pipeline conveying technical field especially, relate to a sample sending reversing device's position detection structure and sample sending reversing device. BACKGROUND

[0002] The pneumatic sample sending system is with compressed air as power, the container with the sample to be detected is transported in the pipeline. At present, there are multiple different sampling sites and multiple different terminals in the pneumatic sample sending system. When using, the sample to be detected obtained at a sampling site usually needs to be sent to different terminals, or the sample of different sampling sites needs to be received at a terminal position. Therefore, the pneumatic sample sending system of the prior art is provided with a sample sending reversing device, which can communicate with different pipelines through the sample sending reversing device, so as to control the sample sending reversing device according to the actual demand to adjust the flow direction of the container.

[0003] The sample sending reversing device in the prior art usually includes a driving assembly and a connecting elbow, the input end of the connecting elbow is used for communicating with the input pipeline, and the output end of the connecting elbow is used for communicating with the output pipeline. The output pipeline is usually provided with multiple roots, when reversing is needed, the connecting elbow is driven to rotate by the driving assembly, so that the output end of the connecting elbow communicates with another output pipeline, so as to change the conveying direction of the container with the sample to be detected. A position detection structure is usually provided in the sample sending reversing device, which detects the rotating position of the connecting elbow to improve the docking efficiency and accuracy of the connecting elbow and the output pipeline.

[0004] However, the detection accuracy of the position detection structure in the prior art is low, even if it is detected to be in place, the output end of the connecting elbow may not be centered with the output pipeline. UTILITY MODEL CONTENTS

[0005] In view of the low detection accuracy of the position detection structure in the prior art sample sending reversing device, even if it is detected to be in place, the connecting elbow may not be centered with the output pipeline, which affects the stable conveying of the container. The utility model provides a position detection structure of a sample sending reversing device, which is driven by a motor with an encoder, and is also provided with a position sensor and a sensing piece. When rotating to the position, the centering condition of the connecting elbow can be determined by the encoder signal and the detection signal of the position sensor, so as to improve the positioning accuracy of the connecting elbow and convey the container more stably.

[0006] A position detection structure of a sample sending reversing device includes a driving assembly and a detection assembly.

[0007] The driving assembly comprises a motor with an encoder and a transmission mechanism connected with the motor, the transmission mechanism is connected with the reversing assembly to drive the reversing assembly to rotate through the motor;

[0008] The detection assembly comprises a mounting bracket, a position sensor and a sensing piece;

[0009] The position sensor is arranged on the mounting bracket to detect the position of the sensing piece, and the position sensor is arranged in plurality, and the position sensor is arranged in one-to-one correspondence with the output pipeline;

[0010] The sensing piece is connected with the reversing assembly, and the sensing piece can rotate synchronously with the connecting elbow.

[0011] Preferably, a motor zero position detection sensor is further included, and a detection area of the motor zero position detection sensor is located in a rotation range of the sensing piece to detect the position of the sensing piece.

[0012] Preferably, the driving assembly further comprises a driving base, and the motor is arranged on the driving base;

[0013] The motor zero position detection sensor is arranged on the driving base.

[0014] Preferably, the sensing piece comprises a first sensing part and a second sensing part bent from an end of the first sensing part, and the first sensing part is connected with the reversing assembly;

[0015] A detection area of the position sensor is located in a rotation range of the first sensing part;

[0016] A detection area of the motor zero position detection sensor is located in a rotation range of the second sensing part.

[0017] Preferably, the mounting bracket comprises a mounting base and a mounting ring arranged on the mounting base, the position sensor is arranged on the mounting ring, and each position sensor is arranged in sequence and spaced along a circumferential direction of the mounting ring.

[0018] Preferably, the position sensor is a proximity switch.

[0019] Preferably, the motor is a servo motor with an absolute value encoder.

[0020] A sample feeding reversing device comprises a reversing assembly and a position detection structure of the sample feeding reversing device according to any one of the above.

[0021] Preferably, the driving assembly further comprises a connecting pipe, the connecting pipe is connected with the transmission mechanism, and the reversing assembly is connected with the transmission mechanism through the connecting pipe.

[0022] An adjustment handle is provided on the connecting pipe.

[0023] Compared with existing technologies, the position detection structure of the sample feeding reversing device provided by this utility model includes a driving component and a detection component. The driving component includes a motor with an encoder and a transmission mechanism connected to the motor. The transmission mechanism is connected to the reversing component to drive the connecting bend in the reversing component to rotate via the motor. The detection component includes a mounting bracket, a position sensor, and a sensing element. The position sensor is mounted on the mounting bracket to detect the position of the sensing element, and multiple position sensors are provided, each corresponding to an output pipe. The sensing element is connected to the reversing component and can rotate synchronously with the connecting bend. In the position detection structure of the sample feeding reversing device, the encoder can detect the motor's posture, giving the motor a position feedback function. The position sensor detects the position of the sensing element, thereby detecting the rotational position of the connecting bend. By combining the detection signals from the encoder and the position sensor, the alignment of the pipeline can be determined, improving positioning accuracy and enabling more stable container delivery. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional structural schematic diagram of a sample delivery reversing device provided in one embodiment;

[0026] Figure 2 for Figure 1 A magnified view of a portion of region A shown below;

[0027] Figure 3 for Figure 1 A three-dimensional structural diagram of the sample delivery reversing device from another angle;

[0028] Figure 4 A cross-sectional structural schematic diagram of a sample delivery reversing device provided in one embodiment;

[0029] Figure 5 for Figure 1 A three-dimensional structural diagram of a portion of the sample delivery reversing device shown.

[0030] Figure 6 for Figure 5Another perspective view of the structure shown;

[0031] Figure 7 A perspective view of the mounting bracket and the position sensor provided for an embodiment.

[0032] Reference signs:

[0033] Sample feeding reversing device 1000; driving assembly 10; motor 11; transmission mechanism 12; driving base 13; connecting pipe 14; adjusting handle 141; detection assembly 20; shell 201; rotating part 202; connecting elbow 210; transmission pipe 2021; mounting bracket 21; mounting base 211; mounting ring 212; position sensor 22; inductive element 23; first inductive part 231; second inductive part 232; motor zero position detection sensor 30; position detection structure 100; reversing assembly 200; output pipe 300; input pipe 400. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] It should be noted that when a component is referred to as "fixed", "mounted", or "disposed" on another component, it can be directly on the other component or indirectly disposed on the other component; when a component is "connected" to another component, or a component is referred to as "connected" to another component, it can be directly connected to the other component or indirectly connected to the other component.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or an ordering between or among the indicated technical features. Thus, a feature defined with "first", "second", etc. can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise expressly specified.

[0038] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the present application are merely intended to facilitate the understanding of the present application and are not intended to limit the conditions of the present application. Therefore, any modification, change in proportion or adjustment in size, which does not affect the effect and purpose of the present application, should still fall within the scope of the technical content disclosed by the present application.

[0039] The utility model provides a kind of position detection structure of sample feeding reversing device, it includes drive assembly and detection component;The drive assembly includes motor with encoder and transmission mechanism connected with the motor, the transmission mechanism is connected with reversing component, to drive the reversing component in the connecting elbow rotation by the motor;The detection component includes mounting bracket, position sensor and inductor piece;The position sensor is arranged on the mounting bracket, to detect the inductor piece position, and the position sensor is provided with multiple, the position sensor is set corresponding with output pipeline one by one;The inductor piece is connected with the reversing component, and the inductor piece can rotate synchronously with the connecting elbow. The position detection structure of sample feeding reversing device can detect the pose of motor by encoder, so that motor has position feedback function, and the inductor piece position is detected by position sensor, so that the rotating position of connecting elbow is detected correspondingly, so that the detection signal of encoder and the detection signal of position sensor are used to determine the centering condition of pipeline, the positioning accuracy can be improved, and the container can be transported more stably.

[0040] Please refer to Figures 1 to 7 In one embodiment, a position detection structure 100 of sample feeding reversing device is provided to detect the position of connecting elbow. The position detection structure 100 of sample feeding reversing device is mainly used to solve the problem of low detection accuracy of the position detection structure of the prior art, which cannot accurately feedback the centering condition of connecting elbow.

[0041] The position detection structure 100 of the sample feeding reversing device comprises a driving assembly 10 and a detection assembly 20, wherein the driving assembly 10 is a driving component for driving the connecting elbow to rotate in the sample feeding reversing device. The driving assembly 10 comprises a motor 11 with an encoder and a transmission mechanism 12 connected with the motor 11, the transmission mechanism 12 is connected with the reversing assembly 200 to drive the connecting elbow 210 in the reversing assembly 200 to rotate through the motor 11. Wherein the transmission mechanism 12 can adopt any power transmission structure, for example, gear transmission, chain transmission, etc., as long as the power output by the motor 11 can be transmitted to the reversing assembly 200 through the transmission mechanism 12, thereby driving the connecting elbow 210 to rotate, so that the output end of the connecting elbow 210 can be communicated with different output pipelines 300; the transmission mechanism 12 and the reversing assembly 200 can be directly connected, or the transmission mechanism 12 and the reversing assembly 200 can be indirectly connected (i.e. other transmission structures are arranged between the transmission mechanism 12 and the reversing assembly 200), as long as the power transmitted by the transmission mechanism 12 can finally drive the connecting elbow 210 to rotate.

[0042] The detection assembly 20 is mainly used for detecting the position of the connecting elbow 210, and the detection assembly 20 comprises a mounting bracket 21, a position sensor 22 and a sensing piece 23. The position sensor 22 is arranged on the mounting bracket 21 and is used for detecting the position of the sensing piece 23. The position sensor 22 is arranged in plurality, and the position sensor 22 is arranged in one-to-one correspondence with the output pipeline 300. Wherein, the position sensor 22 arranged in one-to-one correspondence with the output pipeline 300 means that the number of the position sensor 22 is not less than the number of the output pipeline 300, for example, in an embodiment, when the output pipeline 300 has six, the position sensor 22 also has six; and the position sensor 22 is arranged in correspondence with the arrangement position of the output pipeline 300, at least one position sensor 22 is arranged corresponding to each output pipeline 300, for example, in an embodiment, six output pipelines 300 are arranged in circumferential direction, and six position sensors 22 are also arranged in circumferential direction. The sensing piece 23 is connected with the reversing assembly 200, and the sensing piece 23 can rotate synchronously with the connecting elbow 210. Wherein, the sensing piece 23 connected with the reversing assembly 200 can be directly connected with the connecting elbow 210, or can be indirectly connected with the connecting elbow 210, as long as the sensing piece 23 can rotate synchronously with the connecting elbow 210, and the rotating position state of the connecting elbow 210 can be fed back in real time. Since the sensing piece 23 can rotate synchronously with the connecting elbow 210, and the position sensor 22 is arranged in correspondence with the output pipeline 300, when the connecting elbow 210 is connected with one of the output pipelines 300, the sensing piece 23 also rotates to the detection area of the corresponding position sensor 22, so that the position sensor 22 can output corresponding detection signal to feedback the position of the connecting elbow 210.

[0043] It can be understood that the prior art sample feeding reversing device also has a position detection structure to detect the position of the connecting elbow, so as to improve the docking efficiency and accuracy of the connecting elbow and the output pipeline. However, the prior art usually uses proximity switch for position detection, and the detection accuracy is low. Even if the connecting elbow is detected by the proximity switch, the connecting elbow may not be centered with the output pipeline, thereby affecting the stable conveying of the subsequent container.

[0044] The position detection structure 100 of the sample feeding reversing device provided in the embodiment is provided with the encoder and the position sensor 22. When the driving assembly 10 drives the connection elbow 210 to rotate to the end, the position of the motor 11 can be fed back through the encoder, and the position of the inductor 23 can be fed back through the position sensor 22. The alignment of the connection elbow 210 is determined through the signal of the encoder and the rotation to position signal, so that the positioning accuracy of the connection elbow can be improved, and the container can be stably conveyed. The encoder is superior to the proximity switch in control accuracy, accuracy recovery, anti-interference ability and resolution, and therefore, they are generally suitable for more complex and higher performance automation architecture and environment.

[0045] It can be understood that if the motor 11 with the encoder is separately arranged to detect the position, although the position of the motor 11 can be fed back, due to the influence of installation errors, manufacturing errors and other factors between components, the position of the motor 11 and the position of the connection elbow 210 are likely to have certain errors, and the detection result cannot accurately feed back the position of the connection elbow 210. If the detection assembly 20 is separately arranged, due to the influence of the detection accuracy of the position sensor 22 itself, the position of the connection elbow 210 cannot be accurately fed back. The alignment of the connection elbow 210 is determined through the detection signal of the encoder and the rotation to position signal detected by the position sensor 22, which can improve the positioning accuracy, and when a position sensor 22 fails, the problem can be found out in time, and the maintenance time is reduced.

[0046] Specifically, the encoder can be used in pair with a grating reading head or a magnetic sensor, and can output a digital signal in real time for a controller to read, so as to determine the position of the motor 11.

[0047] Preferably, in an embodiment, the position detection structure 100 of the sample feeding reversing device further comprises a motor zero position detection sensor 30, and the detection area of the motor zero position detection sensor 30 is located in the rotation range of the inductor 23. The motor zero position detection sensor 30 is used to detect the position of the inductor 23. That is, in this embodiment, a sensor for detecting the rotation zero position of the motor 11 is further arranged. When the motor 11 drives the connection elbow 210 to rotate one round, the inductor 23 will synchronously rotate one round, and the arrangement position of the motor zero position detection sensor 30 will match the rotation zero position of the motor 11. The inductor 23 is detected through the motor zero position detection sensor 30, so as to correspondingly feed back the zero position of the motor 11. When the inductor 23 rotates one round and returns to the motor zero position detection sensor 30, it means that the rotor of the motor 11 is in the initial position.

[0048] It can be understood that the motor zero position detection sensor 30 is arranged to detect the zero position of the motor 11, and during debugging and operation, the position information of the other six position sensors 22 (six pipes) can be determined according to the zero position (reference), so as to ensure the operation accuracy and reduce the installation and maintenance difficulty.

[0049] Preferably, in an embodiment, the driving assembly 10 further comprises a driving base 13, and the motor 11 is mounted on the driving base 13, and the motor zero position detection sensor 30 is arranged on the driving base 13. Specifically, in an embodiment, the motor zero position detection sensor 30 is arranged at the top region of the driving base 13.

[0050] Preferably, in an embodiment, the sensing piece 23 comprises a first sensing part 231 and a second sensing part 232 which is bent from the end of the first sensing part 231, and the first sensing part 231 is connected with the commutation assembly 200. The detection region of the position sensor 22 is located in the rotation range of the first sensing part 231, and the detection region of the motor zero position detection sensor 30 is located in the rotation range of the second sensing part 232. That is, in this embodiment, the position sensor 22 and the motor zero position detection sensor 30 detect different parts of the sensing piece 23, the position sensor 22 is used to detect the first sensing part 231, and the motor zero position detection sensor 30 is used to detect the second sensing part 232. Through this structure, the arrangement of the position sensor 22 and the motor zero position detection sensor 30 and the selection of the sensor type can be facilitated.

[0051] Specifically, in an embodiment, the sensing piece 23 is a metal sensing sheet, the first sensing part 231 and the second sensing part 232 are perpendicular to each other, and the sensing piece 23 as a whole has an "L" shape.

[0052] Preferably, in an embodiment, the mounting bracket 21 comprises a mounting base 211 and a mounting ring 212 arranged on the mounting base 211, and the position sensor 22 is arranged on the mounting ring 212. Along the circumference of the mounting ring 212, the position sensors 22 are sequentially and spacedly arranged. Through this structure, the installation of the position sensor 22 can be facilitated, and the installation of the position sensor 22 by using the independent mounting bracket 21 can facilitate the subsequent maintenance and replacement, and also reduce the installation difficulty.

[0053] Preferably, in an embodiment, the position sensor 22 is a proximity switch. A proximity switch is a sensor that detects the presence of an object in its field of view using the change in a property of an inductive device in a sensing circuit. By using a proximity switch, the cost can be reduced, the space required can be reduced, the response can be faster, the installation can be more convenient, and the reliability can be better. Specifically, in an embodiment, the position sensor 22 is an inductive proximity switch.

[0054] Specifically, the motor zero position detection sensor 30 can be any type of sensor as required. For example, in an embodiment, the motor zero position detection sensor 30 can also be a proximity switch.

[0055] Preferably, in an embodiment, the motor 11 is a servo motor with an absolute value encoder, so that the control accuracy is better, and the pose of the motor can be measured more accurately. By using an absolute value encoder, the current position of the motor can be directly measured, and the anti-interference ability of the encoder and the reliability of the data can be further improved.

[0056] At the same time, in an embodiment, a sample feeding and reversing device 1000 is also provided, which includes a reversing assembly 200 and a position detection structure 100 of the sample feeding and reversing device.

[0057] Preferably, in an embodiment, the driving assembly 10 further includes a connecting pipe 14, which is connected with the transmission mechanism 12, and the reversing assembly 200 is connected with the transmission mechanism 12 through the connecting pipe 14. That is, in this embodiment, the motor 11 drives the transmission mechanism 12, the transmission mechanism 12 transmits power to the connecting pipe 14, and the connecting pipe 14 drives the connecting elbow pipe 210 to rotate. The connecting pipe 14 is located between the input pipe 400 and the connecting elbow pipe 210, and is used to communicate the input pipe 400 with the connecting elbow pipe 210. More preferably, the connecting pipe 14 is provided with an adjusting handle 141, when the equipment fails (for example, the motor 11 fails), the operator can temporarily manually rotate the connecting pipe 14 through the adjusting handle 141, so that the connecting elbow pipe 210 can be temporarily driven to rotate and the output pipe 300 can be aligned by manual operation.

[0058] Specifically, in an embodiment, the sensing element 23 is connected with the connecting pipe 14.

[0059] Specifically, in an embodiment, the reversing assembly 200 comprises a housing 201 and a rotating part 202 rotatably arranged in the housing 201, the rotating part 202 is connected with the connecting pipe 14, and the rotating part 202 comprises a transmission pipe 2021 and the connecting elbow 210.

[0060] To facilitate the operator to manually adjust the position of the connecting elbow 210 when the connecting pipe 14 rotates, preferably, in an embodiment, the sample feeding reversing device 1000 can be provided with a position prompting structure, for example, identification parts corresponding to the positions of the output pipes 300 can be arranged on the housing 201, the identification parts can be identified in the form of numbers or symbols, and the circumferential surface of the connecting pipe 14 can be provided with an indicating part corresponding to the position of the connecting elbow 210, the indicating part can be in any form such as a protrusion or a groove, so as to prompt the position of the connecting elbow 210. When the operator rotates the connecting pipe 14, the indicating part rotates to different identification parts, so as to indicate the alignment between the connecting elbow 210 and the output pipe 300, for example, when the indicating part is opposite to the first identification part, it means that the connecting elbow 210 is in communication with the output pipe 300 corresponding to the first identification part at this time.

[0061] When the sample feeding reversing device 1000 operates, the connecting elbow 210 is first rotated by the motor 11 to make the connecting elbow 210 in communication with the corresponding output pipe 300, and then the sample feeding is performed after the rotation of the connecting elbow 210 is detected.

[0062] Specifically, in an embodiment, the bending radius of the connecting elbow 210 is 800 mm, so as to ensure that the container smoothly and quickly passes through in the transmission process and realizes the bidirectional transmission of the container in the sample feeding reversing device 1000.

[0063] Specifically, in an embodiment, the sample feeding reversing device 1000 and the front-end input pipe 400 can be connected through a non-standard special rotary joint, and the rear-end and the output pipe 300 can be connected through a special pipe joint screw, so as to ensure the sealing performance of the pipe during the conveying.

[0064] The above only describes the embodiments of the present application, and it should be pointed out that, for those skilled in the art, improvements can be made without departing from the creative concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. A position detection structure for a sample feeding and reversing device, characterized in that, Includes driver components and detection components; The drive assembly includes a motor with an encoder and a transmission mechanism connected to the motor. The transmission mechanism is connected to a commutation assembly to drive the connecting bend in the commutation assembly to rotate via the motor. The detection assembly includes a mounting bracket, a position sensor, and a sensing element; The position sensor is mounted on the mounting bracket to detect the position of the sensing element. Multiple position sensors are provided, and each position sensor is configured in a one-to-one correspondence with an output pipe. The sensor is connected to the reversing assembly, and the sensor can rotate synchronously with the connecting bend.

2. The position detection structure of the sample feeding reversing device according to claim 1, characterized in that, It also includes a motor zero-position detection sensor, the detection area of ​​which is located within the rotation range of the sensing element, and is used to detect the position of the sensing element.

3. The position detection structure of the sample feeding and reversing device according to claim 2, characterized in that, The drive assembly also includes a drive base, on which the motor is mounted; The motor zero-position detection sensor is mounted on the drive base.

4. The position detection structure of the sample feeding and reversing device according to claim 2, characterized in that, The sensing element includes a first sensing part and a second sensing part formed by bending from the end of the first sensing part, the first sensing part being connected to the commutation assembly; The detection area of ​​the position sensor is located within the rotation range of the first sensing unit; The detection area of ​​the motor zero-position detection sensor is located within the rotation range of the second sensing unit.

5. The position detection structure of the sample feeding and reversing device according to claim 1, characterized in that, The mounting bracket includes a mounting base and a mounting ring disposed on the mounting base. The position sensor is disposed on the mounting ring, and the position sensors are arranged sequentially at intervals along the circumference of the mounting ring.

6. The position detection structure of the sample feeding and reversing device according to claim 1, characterized in that, The position sensor is a proximity switch.

7. The position detection structure of the sample feeding and reversing device according to claim 1, characterized in that, The motor is a servo motor equipped with an absolute encoder.

8. A sample feeding reversing device, characterized in that, It includes a commutation assembly and a position detection structure for the sample delivery commutation device as described in any one of claims 1 to 7.

9. The sample feeding reversing device according to claim 8, characterized in that, The drive assembly further includes a connecting pipe, which is connected to the transmission mechanism, and the reversing assembly is connected to the transmission mechanism through the connecting pipe; An adjustment handle is provided on the connecting pipe.

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