Pneumatic transmission system

Abstract

The utility model relates to the technical field of article conveying, in particular to a pneumatic conveying system. The pneumatic conveying device aims at solving the problem that an existing pneumatic conveying device is prone to damaging a sample tube in the output process. Therefore, the pneumatic conveying system comprises the conveying pipeline used for conveying the sample pipe, the pneumatic driving part used for driving the sample pipe to move in the conveying pipeline and the buffering mechanism, and the buffering mechanism is arranged to be capable of buffering and decelerating the sample pipe conveyed to the receiving end so that the sample pipe can be slowly output through the receiving end. The pneumatic transmission system can effectively buffer and decelerate the sample tube to be output, so that the safety of the sample tube is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of article transmission, and specifically provides a pneumatic transmission system. Background Art

[0002] The sample tube is a container for holding samples (such as but not limited to blood samples and urine samples), which is widely used in medical institutions. Usually, the sampling site and the testing site of a medical institution are separated. For example, the sampling site and the testing site can be arranged in different buildings, or the sampling site and the testing site can be arranged on different floors of the same building, or the sampling site and the testing site can be arranged in different rooms of the same building. After the blood sample, urine sample and other samples are sampled at the sampling site and sealed in the sample tube, they need to be transferred to the testing site for testing. In order to ensure the safety and efficiency of the sample tube being transferred from the sampling site to the testing site, a pneumatic transmission device is designed and applied.

[0003] The pneumatic transmission device conveys the sample tube at a too fast speed, which may easily cause the sample tube to be damaged during the output process.

[0004] Accordingly, this field requires a new technical solution to solve the above technical problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing pneumatic transmission device easily causes the sample tube to be damaged during the output process.

[0006] The utility model provides a pneumatic transmission system, which includes: a delivery pipeline for transporting sample tubes, one end of the delivery pipeline having a receiving end; a pneumatic driving member connected to the delivery pipeline, the pneumatic driving member being used to drive the sample tube to move in the delivery pipeline; and a buffer mechanism, the buffer mechanism being installed on the delivery pipeline and arranged close to the receiving end, the buffer mechanism being arranged to buffer and decelerate the sample tube transported to the receiving end, so that the sample tube is slowly output through the receiving end.

[0007] In the preferred technical scheme of the above-mentioned pneumatic transmission system, the buffer mechanism includes a buffer commutator, an auxiliary pipeline and a connector, the inner diameter of the auxiliary pipeline is smaller than the outer diameter of the sample tube; the buffer commutator is installed on the delivery pipeline and arranged near the receiving end, the buffer commutator divides the delivery pipeline into an A delivery pipeline and a B delivery pipeline, and the receiving end is located at an end of the B delivery pipeline away from the buffer commutator; the auxiliary pipeline is connected to the A delivery pipeline through the connector, the first end of the auxiliary pipeline is connected to the buffer commutator, and the second end of the auxiliary pipeline is connected to the external environment, so that part of the gas in the A delivery pipeline can be discharged through the connector and the auxiliary pipeline; the buffer commutator is configured to temporarily store the sample tube, and the buffer commutator is also configured to be connected to the A delivery pipeline so as to slowly receive the sample tube located in the A delivery pipeline when the A delivery pipeline is under positive pressure, and the buffer commutator is also configured to be able to connect the B delivery pipeline with the auxiliary pipeline so as to transfer the sample tube to the B delivery pipeline when the auxiliary pipeline is under positive pressure.

[0008] In the preferred technical solution of the above-mentioned pneumatic transmission system, the buffer mechanism further includes a valve, which is installed at the second end of the auxiliary pipeline, and the valve is configured to connect and disconnect the auxiliary pipeline from the external environment.

[0009] In the preferred technical solution of the above-mentioned pneumatic transmission system, the buffer diverter includes a shell and a valve core arranged in the shell, and the shell is provided with a first interface, a second interface, a third interface and a fourth interface distributed circumferentially, the first interface and the second interface are coaxially arranged, and the third interface and the fourth interface are coaxially arranged; the first interface is connected to the A delivery pipeline, the second interface is connected to the external environment, the third interface is connected to the B delivery pipeline, and the fourth interface is connected to the auxiliary pipeline; the inner diameter of the second interface and the inner diameter of the fourth interface are both smaller than the sample tube The outer diameter of the first interface and the inner diameter of the third interface are both larger than the outer diameter of the sample tube; the valve core can rotate relative to the shell, and the valve core is provided with a valve core channel for the sample tube to pass through. When the valve core rotates relative to the shell, the buffer diverter can switch between state one and state two, wherein when the buffer diverter is in state one, the valve core channel connects the first interface and the second interface, and when the buffer diverter is in state two, the valve core channel connects the third interface and the fourth interface.

[0010] In the preferred technical solution of the above-mentioned pneumatic transmission system, the buffer commutator can also switch to state three when the valve core rotates relative to the shell. When the buffer commutator is in state three, both ends of the valve core channel are blocked by the shell.

[0011] In the preferred technical solution of the above-mentioned pneumatic transmission system, the angle between the central axis of the first interface and the central axis of the third interface is 30° to 90°.

[0012] In the preferred technical solution of the above-mentioned pneumatic transmission system, the buffering reversing device further includes a driving member, the driving member is connected to the valve core, and the driving member is configured to drive the valve core to rotate relative to the housing.

[0013] In the preferred technical solution of the above-mentioned pneumatic transmission system, the valve is a one-way valve, which is configured to allow the gas in the auxiliary pipeline to enter the external environment and to block the gas in the external environment from entering the auxiliary pipeline; or, the valve is a solenoid valve.

[0014] In the preferred technical solution of the above-mentioned pneumatic transmission system, the pneumatic drive component is a pneumatic vacuum conveyor, which is installed on the A conveying pipeline, and the pneumatic vacuum conveyor divides the A conveying pipeline into an A1 pipe section and an A2 pipe section, the buffer diverter is located at the end of the A1 pipe section away from the pneumatic vacuum conveyor, and the auxiliary pipeline is connected to the A1 pipe section through the connecting piece, and the positive pressure end and the negative pressure end of the pneumatic vacuum conveyor are respectively connected to the A1 pipe section and the A2 pipe section, so that when compressed gas is introduced into the pneumatic vacuum conveyor, a positive pressure can be formed in the A1 pipe section and a negative pressure can be formed in the A2 pipe section at the same time.

[0015] When the above-mentioned technical solution is adopted, the pneumatic transmission system of the utility model can buffer and slow down the sample tube transported to the receiving end by arranging a buffer mechanism on the conveying pipeline, so that the sample tube can be slowly output through the receiving end, thereby ensuring the safety of the sample tube and avoiding damage to the sample tube during the process of conveying and discharging, thereby protecting the safety of the sample inside the sample tube.

[0016] Furthermore, the buffer mechanism includes a buffer commutator, an auxiliary pipeline and a connector. Part of the gas in the A delivery pipeline can be discharged from the auxiliary pipeline, and only a small part of the gas continues to flow along the A delivery pipeline toward the B delivery pipeline, thereby slowing down the delivery force in the A delivery pipeline and reducing the transmission speed of the sample tube, so that the sample tube slowly falls into the buffer commutator, and buffering and deceleration are performed before the sample tube enters the buffer commutator. In addition, under the action of the slight positive pressure of the auxiliary pipeline, the sample tube in the buffer commutator can be slowly blown into the B delivery pipeline and slowly output from the receiving end, so that the sample tube is slowly transported and output in the B delivery pipeline, thereby ensuring the safety of the sample tube; it has a simple structure, a small size, and a good buffering effect, and can effectively ensure the safety of the sample tube without damage.

[0017] Furthermore, a valve is provided at the second end of the auxiliary pipeline to control the connection and disconnection of the auxiliary pipeline with the external environment, so as to better control the pressure in the auxiliary pipeline, and thus better blow the sample tube into the B delivery pipeline for transportation. In addition, the pneumatic transmission system of the present application can also realize reverse transportation. Specifically, when the valve is closed to disconnect the auxiliary pipeline from the external environment, when the A delivery pipeline is under negative pressure, the auxiliary pipeline is also under negative pressure. When the buffer reversal device connects the auxiliary pipeline with the B delivery pipeline, the sample tube can be transported from the B delivery pipeline to the buffer reversal device. When the buffer reversal device is connected to the A delivery pipeline, the sample tube in the buffer reversal device can be transported to the A delivery pipeline.

[0018] Furthermore, the buffer reversing device includes a shell and a valve core arranged in the shell, and the shell is provided with a first interface, a second interface, a third interface and a fourth interface, and the valve core is provided with a valve core channel, so that the valve core channel can connect the first interface with the second interface, and connect the third interface with the fourth interface, so as to smoothly receive the sample tube and change the conveying direction of the sample tube, which helps to smoothly convey the sample tube; its structure is simple and easy to assemble and use.

[0019] Furthermore, the valve core switches to state three during the rotation so that both ends of the valve core channel are blocked by the shell. In this state, one end of the A delivery pipe connected to the first interface is blocked. After the sample tube enters the A delivery pipe, the transmission speed can be slowed down and slowly falls into the first interface, thereby buffering and decelerating the transported sample tube, which can prevent the sample tube from being damaged by collision due to excessive speed. In this state three, the buffering effect of buffering and receiving the sample tube is better.

[0020] Furthermore, setting the angle between the first interface and the third interface to 30° to 90° can ensure that the first interface and the third interface have a sufficiently large distance, reserving sufficient installation space, facilitating the connection of the first interface and the third interface with their corresponding pipes, and reducing the difficulty of connection.

[0021] Furthermore, a driving member is provided to drive the valve core to rotate, thereby facilitating automatic regulation and control.

[0022] Furthermore, the pneumatic drive component is configured as a pneumatic vacuum conveyor, which has a simple structure, a small size, is easy to assemble and use, and can greatly save the overall volume of the pneumatic transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0024] Figure 1 It is a structural schematic diagram of the pneumatic transmission system of the utility model;

[0025] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the buffer commutator of the utility model;

[0027] Figure 4 It is a right side view of the buffer commutator of the utility model;

[0028] Figure 5 yes Figure 4 Sectional view in the AA direction;

[0029] Figure 6 It is a structural schematic diagram of the pneumatic vacuum conveyor of the utility model.

[0030] List of reference numerals:

[0031] 1. Transportation pipeline; 11. A transportation pipeline; 111. A1 pipe section; 112. A2 pipe section; 12. B transportation pipeline;

[0032] 2. Pneumatic drive; 21. Air inlet; 22. Positive pressure end; 23. Negative pressure end; 201. Air inlet pipe;

[0033] 3. Buffer mechanism; 31. Buffer commutator; 311. Housing; 3111. First interface; 3112. Second interface; 3113. Third interface; 3114. Fourth interface; 312. Valve core; 3121. Valve core channel; 32. Auxiliary pipeline; 33. Valve; 34. Connector;

[0034] 4. Receiving end. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0036] It should be noted that in the description of the present invention, the terms "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connect", and "install" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through other components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Based on the problem pointed out in the background art that the existing pneumatic transmission device is prone to damage the sample tube during the output process, the utility model provides a new pneumatic transmission system, which can buffer and decelerate the sample tube delivered to the receiving end by setting a buffer mechanism at a position close to the receiving end, so that the sample tube is slowly output from the receiving end, protecting the safety of the sample tube, avoiding damage to the sample tube, and thus protecting the safety of the sample inside the sample tube.

[0039] Specifically, see Figure 1 The pneumatic transmission system of the utility model includes a transmission pipeline 1, a pneumatic driving member 2 and a buffer mechanism 3.

[0040] Among them, the conveying pipeline 1 is used to convey the sample tube, one end of the conveying pipeline 1 has a receiving end 4, the pneumatic driving component 2 is connected to the conveying pipeline 1, the pneumatic driving component 2 is used to drive the sample tube to move in the conveying pipeline 1, the buffer mechanism 3 is installed on the conveying pipeline 1 and is arranged close to the receiving end 4. The buffer mechanism 3 is arranged to buffer and decelerate the sample tube conveyed to the receiving end 4 so that the sample tube can be slowly output through the receiving end 4.

[0041] The pneumatic transmission system of the utility model is capable of buffering and decelerating the sample tube transported to the receiving end 4 by arranging a buffer mechanism 3 on the transport pipeline 1, and arranging the buffer mechanism 3 close to the receiving end 4, so that the sample tube is slowly output through the receiving end 4, thereby ensuring the safety of the sample tube and avoiding damage to the sample tube during the process of transporting and discharging, thereby protecting the safety of the sample inside the sample tube.

[0042] It should be noted that the present invention does not impose any restrictions on the specific structure of the buffer mechanism 3, as long as the buffer mechanism 3 can buffer and decelerate the sample tube so that the sample tube is finally output slowly to the receiving end 4. In practical applications, those skilled in the art can set the specific structure of the buffer mechanism 3 according to actual needs. Any adjustment and change to the specific structure of the buffer mechanism 3 does not deviate from the basic principle of the present invention and should be limited within the protection scope of the present invention.

[0043] In a preferred embodiment, please also refer to Figures 1 to 5 The buffer mechanism 3 includes a buffer commutator 31 , an auxiliary pipe 32 and a connector 34 . The inner diameter of the auxiliary pipe 32 is smaller than the outer diameter of the sample tube so as to prevent the sample tube from entering the auxiliary pipe 32 .

[0044] The buffer diverter 31 is installed on the delivery pipeline 1 and is arranged near the receiving end 4. The buffer diverter 31 divides the delivery pipeline 1 into the A delivery pipeline 11 and the B delivery pipeline 12. The receiving end 4 is located at the end of the B delivery pipeline 12 away from the buffer diverter 31; the auxiliary pipeline 32 is connected to the A delivery pipeline 11 through a connector 34 (for example: a connecting valve or a connecting pipe), the first end of the auxiliary pipeline 32 is connected to the buffer diverter 31, and the second end of the auxiliary pipeline 32 is connected to the external environment, so that part of the gas in the A delivery pipeline 11 can be discharged through the connector 34 and the auxiliary pipeline 32; this arrangement allows part of the gas flowing from the A delivery pipeline 11 toward the B delivery pipeline 12 to enter the auxiliary pipeline 32 through the connector 34 in the A delivery pipeline 11 and be discharged to the external environment, thereby reducing the amount of gas in the downstream section of the A delivery pipeline 11, so that the sample tube can be decelerated when being transported in the downstream section of the A delivery pipeline 11.

[0045] The buffer commutator 31 is configured to temporarily store sample tubes. The buffer commutator 31 is also configured to be connected to the A delivery pipe 11 so as to slowly receive the sample tubes located in the A delivery pipe 11 when the A delivery pipe 11 is at a positive pressure. The buffer commutator 31 is also configured to connect the B delivery pipe 12 with the auxiliary pipe 32 so as to transfer the sample tubes to the B delivery pipe 12 when the auxiliary pipe 32 is at a positive pressure.

[0046] When the A delivery pipeline 11 is at positive pressure, when the buffer diverter 31 is connected to the A delivery pipeline 11, since part of the positive pressure airflow has been discharged from the auxiliary pipeline 32, the airflow in the part of the pipe section of the A delivery pipeline 11 close to the buffer diverter 31 is weakened, thereby reducing the speed at which the sample tube enters the buffer diverter 31, so that the buffer diverter 31 slowly receives the sample tube and buffers the sample tube in the buffer diverter 31. When the buffer diverter 31 connects the auxiliary pipeline 32 to the B delivery pipeline 12, since the A delivery pipeline 11 is at positive pressure, part of the gas in the A delivery pipeline 11 enters the auxiliary pipeline 32, wherein a part of the gas in the auxiliary pipeline 32 is discharged, and the other part flows toward the B delivery pipeline 12, so that the auxiliary pipeline 32 is also at a slight positive pressure. At this time, under the action of the slight positive pressure of the auxiliary pipeline 32, the sample tube in the buffer diverter 31 can be blown into the B delivery pipeline 12, and then the sample tube is blown slowly until it is output from the receiving end 4.

[0047] Through such a setting, the buffering effect of the buffer mechanism 3 can be improved, and the buffer mechanism 3 has a simple structure and is easy to assemble and use.

[0048] Preferably, please continue to see Figure 1 and Figure 2 The buffer mechanism 3 further includes a valve 33, which is installed at the second end of the auxiliary pipeline 32. The valve 33 is configured to connect and disconnect the auxiliary pipeline 32 with the external environment.

[0049] By setting a valve 33 at the second end of the auxiliary pipeline 32 to control the connection and disconnection of the auxiliary pipeline 32 with the external environment, on the one hand, it is possible to better regulate the pressure in the auxiliary pipeline 32, and thus better blow the sample tube into the B delivery pipeline 12 for transportation; on the other hand, it is also possible to enable the pneumatic transmission system of the present application to achieve reverse transportation. Specifically, when the valve 33 is closed, the auxiliary pipeline 32 is disconnected from the external environment. When the A delivery pipeline 11 is under negative pressure, the auxiliary pipeline 32 is also under negative pressure. When the buffer diverter 31 connects the auxiliary pipeline 32 with the B delivery pipeline 12, the sample tube can be transported from the B delivery pipeline 12 to the buffer diverter 31. When the buffer diverter 31 is connected to the A delivery pipeline 11, the sample tube in the buffer diverter 31 can be transported to the A delivery pipeline 11. The application scenario of the buffer mechanism 3 can be expanded.

[0050] In one embodiment, the valve 33 is a one-way valve, which is configured to allow the gas in the auxiliary pipeline 32 to enter the external environment and to block the gas in the external environment from entering the auxiliary pipeline 32 .

[0051] In another embodiment, the valve 33 is a solenoid valve. When there is positive pressure in the auxiliary pipeline 32, the solenoid valve opens to connect the auxiliary pipeline 32 with the external environment. When there is negative pressure in the auxiliary pipeline 32, the solenoid valve closes to disconnect the auxiliary pipeline 32 from the external environment.

[0052] It should be noted that the present invention does not impose any restrictions on the specific structure of the valve 33, as long as the valve 33 can control the connection and disconnection of the auxiliary pipeline 32 with the external environment as required. In practical applications, those skilled in the art can set the structure of the valve 33 according to actual needs. The specific implementation form of the valve 33 in the above embodiment should not limit the protection scope of the present invention.

[0053] In another embodiment, the buffer mechanism 3 includes a plurality of exhaust holes, which are provided on the delivery pipeline 1 and connect the delivery pipeline 1 with the external environment, and the plurality of exhaust holes are spaced apart along the delivery direction of the delivery pipeline 1. By providing a plurality of exhaust holes upstream of the receiving end 4, part of the gas in the delivery pipeline 1 can be discharged through the exhaust holes, so that the delivery speed of the sample tube can be effectively slowed down when entering the delivery pipeline 1 downstream of the exhaust holes, so that the sample tube can be slowly discharged from the receiving end 4.

[0054] In another embodiment, the buffer mechanism 3 includes a plurality of exhaust holes and a plurality of bending structures, wherein the plurality of exhaust holes are provided on the delivery pipe 1, and a portion of the delivery pipe 1 is bent to form a bending structure, and the bending structure is located downstream of the exhaust holes. By arranging a plurality of exhaust holes upstream of the receiving end 4, part of the gas in the delivery pipe 1 can be discharged through the exhaust holes, so that the delivery speed of the sample tube can be effectively slowed down when entering the delivery pipe 1 downstream of the exhaust holes. In addition, the sample tube can further slow down the delivery speed by changing the transmission direction multiple times in the bending structure, so as to ensure that the speed is slow when being output at the receiving end 4, thereby improving the deceleration and buffering effect of the buffer mechanism 3.

[0055] Although several different embodiments of the buffer mechanism 3 for achieving the deceleration and buffering effect are given in the above-mentioned embodiments, it is still preferred to set the buffer mechanism 3 to a structural form in which a buffer diverter 31, an auxiliary pipeline 32, a valve 33 and a connector 34 cooperate. Compared with other embodiments, this setting method has a better buffering effect, is suitable for the transportation of various sample tubes, and is easier to control.

[0056] Preferably, please also refer to Figures 3 to 5 The buffering commutator 31 includes a housing 311 and a valve core 312 disposed in the housing 311 .

[0057] Among them, the shell 311 is provided with a first interface 3111, a second interface 3112, a third interface 3113 and a fourth interface 3114 distributed in a circumferential direction, the first interface 3111 and the second interface 3112 are coaxially arranged, and the third interface 3113 and the fourth interface 3114 are coaxially arranged; the first interface 3111 is connected to the A delivery pipe 11, the second interface 3112 is connected to the external environment, the third interface 3113 is connected to the B delivery pipe 12, and the fourth interface 3114 is connected to the auxiliary pipe 32; the inner diameter of the second interface 3112 and the inner diameter of the fourth interface 3114 are both smaller than the outer diameter of the sample tube to prevent the sample tube from entering the second interface 3112 and the fourth interface 3114, thereby preventing the sample tube from deviating from the delivery route, and the inner diameter of the first interface 3111 and the inner diameter of the third interface 3113 are both larger than the outer diameter of the sample tube, so that the sample tube can be transported through the first interface 3111 and the third interface 3113.

[0058] The valve core 312 can rotate relative to the shell 311, and a valve core channel 3121 is provided on the valve core 312 for allowing the sample tube to pass through. The valve core channel 3121 can temporarily store the sample tube. The buffer diverter 31 can switch between state one and state two during the rotation of the valve core 312 relative to the shell 311, wherein when the buffer diverter 31 is in state one, the valve core channel 3121 connects the first interface 3111 and the second interface 3112, and in this state the valve core channel 3121 is connected to the A delivery pipeline 11, and when the buffer diverter 31 is in state two, the valve core channel 3121 connects the third interface 3113 and the fourth interface 3114, and in this state the valve core channel 3121 is simultaneously connected to the auxiliary pipeline 32 and the B delivery pipeline 12.

[0059] Through such a configuration, the buffer commutator 31 has a simple structure, is easy to assemble and use, and is easy to adjust the state of the buffer commutator 31 so as to smoothly transport the sample tube.

[0060] Preferably, the buffering reversing device 31 can also switch to state three when the valve core 312 rotates relative to the housing 311 . When the buffering reversing device 31 is in state three, both ends of the valve core channel 3121 are blocked by the housing 311 .

[0061] With such an arrangement, the valve core 312 switches to state three during rotation so that both ends of the valve core channel 3121 are blocked by the shell 311, thereby blocking one end of the A delivery pipe 11 connected to the first interface 3111. After entering the A delivery pipe 11, the sample tube can slow down the transmission speed and slowly fall into the first interface 3111, effectively buffering and decelerating the transported sample tube, thereby avoiding collision damage of the sample tube due to excessive speed. In the case of state three, the buffering effect of buffering and receiving the sample tube is better.

[0062] Preferably, the angle between the central axis of the first interface 3111 and the central axis of the third interface 3113 is 30° to 90°.

[0063] Through such a setting method, the angle between the first interface 3111 and the third interface 3113 is set to 30°~90°, so that the first interface 3111 and the third interface 3113 have a sufficiently large distance, and sufficient installation space is reserved, which facilitates the connection between the first interface 3111 and the third interface 3113 and their corresponding pipes, thereby reducing the difficulty of connection.

[0064] Preferably, the buffering commutator 31 further includes a driving member, which is connected to the valve core 312 and is configured to drive the valve core 312 to rotate relative to the housing 311. The driving member is configured to drive the valve core 312 to rotate, thereby adjusting the state of the valve core 312. In addition, configuring the driving member as an electric driving member helps to achieve automatic adjustment control.

[0065] In practical applications, the driving member may be a manual rotating member that is manually operated to rotate, or the driving member may be a motor that drives the valve core 312 to rotate so as to achieve automatic control and adjustment.

[0066] It should be noted that the present invention does not impose any restrictions on the specific structure of the pneumatic drive 2, as long as the pneumatic drive 2 can drive the sample tube to be transported in the transport pipe 1. In practical applications, those skilled in the art can set the specific structure of the pneumatic drive 2 according to actual needs. For example, the pneumatic drive 2 is a blower; or, the pneumatic drive 2 is a blower and an exhaust fan, and the blower and the exhaust fan cooperate to drive the sample tube to be transported in the transport pipe 1, etc. Such adjustments and changes to the specific structure of the pneumatic drive 2 do not deviate from the basic principles of the present invention and should be limited within the scope of protection of the present invention.

[0067] Preferably, please also refer to Figure 1 and Figure 6 The pneumatic drive component 2 is a pneumatic vacuum conveyor, which is installed on the A conveying pipeline 11, and the pneumatic vacuum conveyor divides the A conveying pipeline 11 into an A1 pipe section 111 and an A2 pipe section 112. The buffer commutator 31 is located at one end of the A1 pipe section 111 away from the pneumatic vacuum conveyor, and the auxiliary pipeline 32 is connected to the A1 pipe section 111 through a connector 34.

[0068] The pneumatic vacuum conveyor is provided with an air inlet 21, a positive pressure end 22 and a negative pressure end 23. The air inlet 21 is connected to a compressed gas source (not shown in the figure) through an air inlet pipe 201, the positive pressure end 22 is connected to the A1 pipe section 111, and the negative pressure end 23 is connected to the A2 pipe section 112, so that when compressed gas is introduced into the pneumatic vacuum conveyor, positive pressure can be formed in the A1 pipe section 111, and negative pressure can be formed in the A2 pipe section 112 at the same time.

[0069] When the sample tube is transported in the transport pipe 1 toward the receiving end 4, negative pressure is formed in the A2 tube section 112, thereby generating suction to attract the sample tube to move. After the sample tube moves into the A1 tube section 111, there is no positive pressure in the A1 tube section 111, and the sample tube is blown to continue moving in the A1 tube section 111. The pneumatic drive 2 is set as a pneumatic vacuum conveyor, which has a simple structure, a small volume, is easy to assemble and use, and can greatly save the overall volume of the pneumatic transmission system.

[0070] It should also be noted that the present invention does not impose any restrictions on the structure and size of the delivery pipe 1. As long as the delivery pipe 1 can normally transport the sample tube, in actual applications, those skilled in the art can set the structure and size of the delivery pipe 1 according to actual needs. Adjustments and changes to the structure and size of the delivery pipe 1 do not deviate from the basic principles of the present invention and should be limited within the scope of protection of the present invention.

[0071] In one embodiment, the delivery pipe 1 is a transparent delivery pipe, so that the position and delivery status of the sample tube in the delivery pipe 1 can be observed at any time.

[0072] It should be noted that the present invention does not impose any restrictions on the specific structure of the receiving end 4. In practical applications, those skilled in the art can set the structure of the receiving end 4 according to actual needs. For example, the receiving end 4 is an integrated structure with the delivery pipeline 1, and it is the end of the B delivery pipeline 12; or the receiving end 4 is a hose installed at the end of the delivery pipeline 1. Such adjustments and changes to the specific structure of the receiving end 4 do not deviate from the basic principles of the present invention and should be limited within the protection scope of the present invention.

[0073] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pneumatic transmission system, characterized in that: include: A delivery pipeline, used for delivering the sample tube, wherein one end of the delivery pipeline has a receiving end; A pneumatic driving member connected to the delivery pipeline, the pneumatic driving member is used to drive the sample tube to move in the delivery pipeline; and a buffer mechanism, wherein the buffer mechanism is installed on the conveying pipeline and arranged close to the receiving end, and the buffer mechanism is arranged to buffer and decelerate the sample tube conveyed to the receiving end so that the sample tube is slowly output through the receiving end.

2. The pneumatic transmission system according to claim 1, characterized in that: The buffer mechanism comprises a buffer commutator, an auxiliary pipeline and a connector, wherein the inner diameter of the auxiliary pipeline is smaller than the outer diameter of the sample tube; The buffer commutator is installed on the delivery pipeline and is arranged close to the receiving end. The buffer commutator divides the delivery pipeline into an A delivery pipeline and a B delivery pipeline. The receiving end is located at an end of the B delivery pipeline away from the buffer commutator. The auxiliary pipeline is connected to the A delivery pipeline through the connecting piece, the first end of the auxiliary pipeline is connected to the buffer commutator, and the second end of the auxiliary pipeline is connected to the external environment, so that part of the gas in the A delivery pipeline can be discharged through the connecting piece and the auxiliary pipeline; The buffer commutator is configured to temporarily store the sample tube. The buffer commutator is also configured to be connected to the A delivery pipe so as to slowly receive the sample tube located in the A delivery pipe when the A delivery pipe is under positive pressure. The buffer commutator is also configured to connect the B delivery pipe with the auxiliary pipe so as to transfer the sample tube to the B delivery pipe when the auxiliary pipe is under positive pressure.

3. The pneumatic transmission system according to claim 2, characterized in that: The buffer mechanism further comprises a valve, which is mounted on the second end of the auxiliary pipeline and is configured to connect and disconnect the auxiliary pipeline from the external environment.

4. The pneumatic transmission system according to claim 2, characterized in that: The buffer commutator comprises a housing and a valve core arranged in the housing. The shell is provided with a first interface, a second interface, a third interface and a fourth interface distributed circumferentially, the first interface and the second interface are coaxially arranged, and the third interface and the fourth interface are coaxially arranged; the first interface is connected to the A delivery pipeline, the second interface is connected to the external environment, the third interface is connected to the B delivery pipeline, and the fourth interface is connected to the auxiliary pipeline; the inner diameter of the second interface and the inner diameter of the fourth interface are both smaller than the outer diameter of the sample tube, and the inner diameter of the first interface and the inner diameter of the third interface are both larger than the outer diameter of the sample tube; The valve core is capable of rotating relative to the shell, and a valve core channel is provided on the valve core for allowing a sample tube to pass through. The buffer diverter is capable of switching between state one and state two during the rotation of the valve core relative to the shell, wherein when the buffer diverter is in state one, the valve core channel connects the first interface and the second interface, and when the buffer diverter is in state two, the valve core channel connects the third interface and the fourth interface.

5. The pneumatic transmission system according to claim 4, characterized in that: The buffering commutator can also switch to state three when the valve core rotates relative to the housing. When the buffering commutator is in state three, both ends of the valve core channel are blocked by the housing.

6. The pneumatic transmission system according to claim 4, characterized in that: The angle between the central axis of the first interface and the central axis of the third interface is 30° to 90°.

7. The pneumatic transmission system according to claim 4, characterized in that: The buffering commutator further comprises a driving member, wherein the driving member is connected to the valve core and is configured to drive the valve core to rotate relative to the housing.

8. The pneumatic transmission system according to claim 3, characterized in that: The valve is a one-way valve, and the one-way valve is configured to allow the gas in the auxiliary pipeline to enter the external environment and to block the gas in the external environment from entering the auxiliary pipeline; Alternatively, the valve is a solenoid valve.

9. The pneumatic transmission system according to any one of claims 2 to 8, characterized in that: The pneumatic drive is a pneumatic vacuum conveyor, which is installed on the A conveying pipeline, and the pneumatic vacuum conveyor divides the A conveying pipeline into an A1 pipe section and an A2 pipe section. The buffer diverter is located at one end of the A1 pipe section away from the pneumatic vacuum conveyor, and the auxiliary pipeline is connected to the A1 pipe section through the connecting piece. The positive pressure end and the negative pressure end of the pneumatic vacuum conveyor are respectively connected to the A1 pipe section and the A2 pipe section, so that when compressed gas is introduced into the pneumatic vacuum conveyor, positive pressure can be formed in the A1 pipe section and negative pressure can be formed in the A2 pipe section at the same time.

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