Pneumatic brush type vacuum blood collection tube multi-source buffer receiving device

Abstract

The utility model discloses a pneumatic brush formula vacuum blood collection tube multi-source buffer receiving device, including the casing, install transmission air pipe on the casing, install the circular brush on the casing, the circular brush becomes two pairs and is inserted in the casing through bearing, the utility model relates to blood collection tube collection technical field, through flexible circular brush drive technology to friction directional push blood collection tube, avoid the mechanical damage caused by rigid structure, reduce the dirt accumulation simultaneously, prolong the maintenance cycle, and the stepless speed regulation system of synchronous belt is linked with electromagnetic telescopic ware through 2:1 transmission ratio, and the dynamic matching pneumatic transmission speed and brush rotation speed solve the energy waste or the problem of jamming of traditional fixed transmission ratio.

Description

Technical Field

[0001] This utility model relates to the field of blood collection tube technology, specifically a pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device. Background Technology

[0002] Currently, pneumatic transmission systems are widely used in the medical field for transporting vacuum blood collection tubes. However, they suffer from several core defects, including a trade-off between mechanical damage and efficiency, insufficient adaptability of the transmission system, lack of buffering and noise reduction mechanisms, insufficient control and monitoring accuracy, and low automation and integration. Traditional rigid pushing structures are prone to scratches or damage to the surface of blood collection tubes, and brush structures are prone to failure due to dirt accumulation. Fixed transmission ratio designs cannot match real-time transmission speeds, and synchronous belt drives lack dynamic speed adjustment mechanisms. Rigid material buffering leads to noise and test tube breakage, and airflow control is limited. Sensors have limited functionality and low counting accuracy, making it impossible to adjust parameters in conjunction with the system. The low system integration makes it difficult to achieve full-process automation. In view of these issues, this case study was developed to address these problems. Utility Model Content

[0003] To achieve the above objectives, this utility model is implemented through the following technical solution: a pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device, including a housing, a transmission air pipe installed on the housing, and a circular brush installed on the housing, the circular brush being in two pairs and inserted into the housing through bearings; The air transmission tube is connected to the top inlet of the housing by a snap-fit, and the end of the air transmission tube extends to the center of the circular brush. A stepper motor is mounted on the outside of the housing, and the stepper motor is fixed to the housing by bolts; The circular brush is mounted on a drive gear, and a transmission gear is mounted on the horizontally parallel circular brush. The drive gear and the transmission gear mesh with each other. The drive gear is fixedly mounted on the output shaft of the stepper motor by a flat key. Two pairs of circular brushes are respectively equipped with small and large synchronous pulleys. One pair of small synchronous pulleys is located above the one pair of large synchronous pulleys. A pair of synchronous belts are installed on the one pair of small and one pair of large synchronous pulleys. The pair of synchronous belts surround the one pair of small and one pair of large synchronous pulleys to form a stepless speed-regulating transmission with a transmission ratio of 2:1.

[0004] Preferably, an electromagnetic expansion joint is installed on the outer side of the housing. The electromagnetic expansion joints are installed in pairs on the outer side of the housing, and each pair of electromagnetic expansion joints is directly opposite a pair of synchronous belts. Each pair of electromagnetic expansion joints is equipped with a pressing wheel, and each pair of pressing wheels is directly opposite a pair of synchronous belts.

[0005] Preferably, a sensor is installed on the transmission air pipe, and shock-absorbing rubber pads are provided between the stepper motor and the housing.

[0006] Preferably, the extrusion wheel is provided with a guide groove.

[0007] Preferably, a buffer rubber block is installed on the inner side of the housing.

[0008] Preferably, a silicone damping layer is embedded inside the buffer block, and an infrared counting sensor is installed at the horn-shaped opening. Beneficial effects

[0009] This invention provides a pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device. It offers the following advantages: This device utilizes flexible circular brush drive technology to directionally push the blood collection tube using friction, avoiding mechanical damage caused by rigid structures. Simultaneously, the embedded design reduces dirt accumulation and extends maintenance cycles. The synchronous belt stepless speed regulation system, linked with an electromagnetic expansion joint at a 2:1 transmission ratio, dynamically matches the pneumatic transmission speed with the brush rotation speed, solving the energy waste or clogging problems associated with traditional fixed transmission ratios. The silicone shock-absorbing layer and buffer blocks inside the casing, combined with airflow speed control, form a multi-stage "soft landing" mechanism, significantly reducing impact force and noise at the landing point and minimizing the risk of tube breakage. The transmission tube sensor and infrared counting sensor enable real-time position monitoring and automatic counting, with data synchronized to the control system for status monitoring and anomaly warning. The electrical control module integrates all process functions, automating the blood collection tube transmission, sorting, and counting process, and interfaces with the laboratory information management system to reduce manual intervention. Dynamic speed regulation and a flexible structure reduce energy consumption and mechanical wear, improving equipment reliability and lifespan. This device provides medical laboratories with high efficiency, safety, and low maintenance costs. Attached Figure Description

[0010] Figure 1 This is a front-view three-dimensional cross-sectional schematic diagram of the pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device of this utility model.

[0011] Figure 2 This is a rear-view three-dimensional schematic diagram of the pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device of this utility model.

[0012] Figure 3 This is a front-view three-dimensional schematic diagram of the pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device of this utility model.

[0013] In the diagram: 1. Housing; 2. Transmission air pipe; 3. Stepper motor; 4. Large synchronous pulley; 5. Small synchronous pulley; 6. Synchronous belt; 7. Sensor; 8. Drive gear; 9. Transmission gear; 10. Circular brush; 11. Electromagnetic expansion joint; 12. Extrusion wheel. Detailed Implementation

[0014] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further. Example

[0016] Please see Figure 1-3 Traditional rigid pushing structures (such as metal push plates) are prone to scratches or damage to the surface of blood collection tubes, especially in high-frequency transmission scenarios, where mechanical wear is significant. While some systems employ brush structures, the brushes are susceptible to failure due to dirt accumulation, requiring frequent cleaning. Furthermore, the straight-line brush layout can lead to uneven blood collection tube delivery. Most pneumatic transmission devices use a fixed transmission ratio design (such as gear transmission), which cannot adjust the brush rotation speed according to real-time transmission speed, resulting in energy waste at low speeds or blood collection tube accumulation at high speeds. Although synchronous belt drives are used in some systems, they lack a dynamic speed regulation mechanism, limiting transmission efficiency. Therefore, this application protects the efficient directional delivery of blood collection tubes through a pneumatic transmission and brush drive mechanism. The core of this mechanism lies in the transmission air pipe 2, which uses compressed gas to create negative pressure that attracts the blood collection tubes and delivers them to the central area of ​​two pairs of horizontally parallel circular brushes 10 inside the housing 1. A stepper motor 3 drives the brushes to rotate via the meshing of a drive gear 8 and a transmission gear 9. The brushes are directionally pushed using the flexible frictional contact between the brush surface and the blood collection tubes, while minimizing mechanical damage. The continuously variable transmission system of the synchronous belt 6 forms a closed-loop transmission through two pairs of synchronous pulleys (smaller on top, larger on the bottom). The 2:1 transmission ratio ensures that the brush rotation speed matches the pneumatic transmission speed. The electromagnetic expansion joint 11 on the outside of the housing 1 dynamically adjusts the transmission resistance by regulating the pressure of the compression wheel 12 on the synchronous belt 6 to achieve continuously variable speed control. A multi-source buffer mechanism combines a silicone-embedded buffer block inside the housing 1 with pneumatic control at the end of the transmission air pipe 2. The former absorbs the impact force of the blood collection tubes and reduces noise, while the latter controls the falling posture through airflow speed to avoid hard collisions. In the sensing and control process, sensor 7 on the transmission tube 2 monitors the arrival signal of the blood collection tube to trigger the start of stepper motor 3. The shock-absorbing rubber pad between stepper motor 3 and housing 1 further ensures sensing accuracy. The infrared counting sensor set at the horn-shaped opening of housing 1 realizes the counting of passages through beam obstruction detection, and the data is synchronized to the control system for verification. The overall workflow is as follows: the pneumatic transmission system delivers the blood collection tube to the center of the brush → stepper motor 3 drives the brush to rotate to complete directional pushing → electromagnetic expansion joint 11 adjusts the tension of synchronous belt 6 to match the transmission speed → buffer rubber block and pneumatic buffer absorb the impact → infrared sensor records the number, while sensor 7 monitors the transmission status in real time and triggers the shock absorption or speed adjustment mechanism to ensure stable and efficient operation.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device, characterized in that, Includes a housing (1), on which a transmission air pipe (2) is installed, and on which a circular brush (10) is installed, the circular brush (10) being in two pairs inserted into the housing (1) via bearings; The transmission air pipe (2) is connected to the top inlet of the housing (1) by a snap fastener, and the end of the transmission air pipe (2) extends to the center of the circular brush (10); The stepper motor (3) is mounted on the outside of the housing (1), and the stepper motor (3) is fixed to the housing (1) by bolts. The circular brush (10) is mounted on a drive gear (8), and a transmission gear (9) is mounted on the horizontally parallel circular brush. The drive gear (8) and the transmission gear (9) mesh with each other. The drive gear (8) is fixedly mounted on the output shaft of the stepper motor (3) by a flat key. Two pairs of circular brushes (10) are respectively equipped with small synchronous pulleys (5) and large synchronous pulleys (4). The pair of small synchronous pulleys (5) are located above the pair of large synchronous pulleys (4). A pair of synchronous belts (6) are installed on the pair of small synchronous pulleys (5) and the pair of large synchronous pulleys (4). The pair of synchronous belts (6) surround the pair of small synchronous pulleys (5) and the pair of large synchronous pulleys (4) to form a stepless speed regulation transmission with a transmission ratio of 2:

1.

2. The pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device according to claim 1, characterized in that, Electromagnetic expansion joints (11) are installed on the outside of the housing (1). The electromagnetic expansion joints (11) are installed in pairs on the outside of the housing (1), and each pair of electromagnetic expansion joints (11) is directly opposite to a pair of synchronous belts (6). Each pair of electromagnetic expansion joints (11) is equipped with a pressing wheel (12), and each pair of pressing wheels (12) is directly opposite to pressing a pair of synchronous belts (6).

3. The pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device according to claim 2, characterized in that, A sensor (7) is installed on the transmission air pipe (2), and shock-absorbing rubber pads are provided on the stepper motor (3) and the housing (1).

4. The pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device according to claim 3, characterized in that, The extrusion wheel (12) is provided with a guide groove.

5. The pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device according to claim 4, characterized in that, A buffer rubber block is installed on the inner side of the housing (1).

6. The pneumatic brush-type vacuum blood collection tube multi-source buffer receiving device according to claim 5, characterized in that, The buffer block has an embedded silicone shock-absorbing layer inside, and an infrared counting sensor is installed at the horn-shaped opening.

Images