Pneumatic conveying system circuit changer

Abstract

The invention discloses a pneumatic conveying system circuit changer which solves the technical problems that most of existing conveying pipeline switching devices are complex in structure, the alignment precision is not high during pipeline switching, and the maintenance cost is high. The driving mechanism drives the conveying mechanism to drive the reversing pipeline to rotate so as to switch different conveying pipelines, the structure is simple, and the manufacturing cost is low; by arranging a plurality of detection holes and a pair of in-place detectors, the rotating position of the reversing pipeline can be controlled, and the alignment precision of the reversing pipeline and different conveying pipelines is improved; a rotary disc is arranged at the end, close to the second supporting base, of the reversing pipeline and connected to the second supporting base in an attached mode, and the sealing performance between the reversing pipeline and the second mounting hole can be improved. According to the pneumatic conveying system circuit changer, irradiated sample boxes can be conveyed at different destinations according to different work tasks.

Description

Technical Field

[0001] The invention relates to irradiation sample box conveying equipment, in particular to a pneumatic conveying system circuit changer. Background Art

[0002] Irradiation technology uses ionizing radiation sources such as radioactive isotopes, electron beams, gamma rays, neutrons, etc. produced by reactors or accelerators to irradiate matter, causing ionization, excitation and other effects, thereby changing the physical, chemical or biological properties of the matter.

[0003] When irradiating, measuring, storing and other tasks are performed on samples, the pneumatic conveying system uses the negative pressure generated by the vacuum in the conveying pipeline to form an airflow thrust, so that the sample box located in the pipeline moves. When performing different tasks on the samples, the conveying pipeline needs to be switched to control the conveying of the sample box between different pipelines, so that the sample box enters the preset measuring tube, receiver, multi-sample storage, irradiation tube or waste tank and other working devices according to the work task. However, most of the existing conveying pipeline switching devices have complex structures, low alignment accuracy when switching pipelines, and high maintenance costs. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems that most of the existing transmission pipeline switching devices have complex structures, low alignment accuracy during pipeline switching, and high maintenance costs, and to provide a pneumatic transmission system switcher.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A pneumatic conveying system circuit changer, which is special in that it comprises a mounting base plate, on which a first supporting seat and a second supporting seat are relatively connected;

[0007] A first mounting hole is formed on the first support seat, and a delivery pipe a extending in a direction away from the second support seat is connected to the first mounting hole on the first support seat;

[0008] A surface of the second support base away from the first support base is fixedly connected to the driving mechanism, and a plurality of second mounting holes are evenly arranged along the circumferential direction at positions equidistant from the output shaft of the driving mechanism on the second support base, and a delivery pipe b is connected to each second mounting hole on the second support base, and the delivery pipe b and the driving mechanism are located on the same side of the second support base;

[0009] The transmission mechanism is rotatably connected between the first support seat and the second support seat, the central axis of the transmission mechanism is coaxially arranged with the output shaft of the driving mechanism and the first mounting hole, and the end of the transmission mechanism is fixedly connected to the output shaft of the driving mechanism, and the reversing pipe is fixedly connected to the transmission mechanism;

[0010] One end of the reversing pipe is rotatably connected to the first support seat and communicated with the first mounting hole, and the other end extends to the surface of the second support seat, and the distance between the central axis of the port at the other end and the central axis of the transmission mechanism is equal to the distance between the central axis of the second mounting hole and the central axis of the transmission mechanism.

[0011] Further, the transmission mechanism includes a transmission shaft and a transition piece;

[0012] The two ends of the transmission shaft are rotatably connected to the first support seat and the second support seat, the central axis of the transmission shaft is coaxially arranged with the output shaft of the driving mechanism and the first mounting hole, and the end of the transmission shaft is fixedly connected to the output shaft of the driving mechanism; one end of the reversing pipe connected to the first mounting hole is arranged in the transmission shaft, and the other end passes through the transmission shaft and extends to the surface of the second support seat;

[0013] The transition piece is sleeved on one end of the transmission shaft close to the second support seat, a third mounting hole is provided on the transition piece, and one end of the reversing pipe close to the second support seat is fixedly connected in the third mounting hole of the transition piece.

[0014] Further, the transmission shaft includes a first mounting tube, a shaft tube and a second mounting tube which are coaxially arranged;

[0015] The first mounting tube is rotatably connected to the first support seat and communicated with the first mounting hole, the second mounting tube is rotatably connected to the second support seat and connected to the output shaft of the driving mechanism, and the two ends of the shaft tube are respectively connected to the first mounting tube and the second mounting tube by flanges or welding or bonding;

[0016] The shaft tube is provided with an opening, and the other end of the reversing pipe passes through the opening and extends to the surface of the second support seat;

[0017] The connection between the second mounting tube and the shaft tube is sleeved with a transition piece.

[0018] Furthermore, a first fixing groove is formed at one end of the second mounting tube connected to the shaft tube, a second fixing groove is formed on the shaft tube where it is connected to the second mounting tube, a protrusion is connected to each of the two side surfaces of the transition piece, and the two protrusions are respectively connected to the first fixing groove and the second fixing groove.

[0019] Furthermore, the driving mechanism is a reduction motor, which is fixedly connected to a side of the second support base away from the first support base, and an output shaft of the reduction motor passes through the second support base to connect to the transmission mechanism.

[0020] Furthermore, a bearing seat is connected to the first support seat and the second support seat respectively, a bearing is connected to each bearing seat, and both ends of the transmission mechanism are connected to the bearings.

[0021] Furthermore, it also includes a turntable, which is sleeved on the transmission mechanism and one end of the reversing pipe close to the second support seat. The turntable is closely connected to the second support seat and is used to dynamically seal the second mounting hole of the reversing pipe and the second support seat.

[0022] Furthermore, one end of the transmission mechanism close to the first support seat is connected to a detection plate, and a plurality of detection holes are provided on the detection plate; a transmitting end and a receiving end of an in-place detector are provided on both sides of the detection plate, wherein the transmitting end of the in-place detector is fixedly connected to the first support seat, and the receiving end of the in-place detector is connected to the third support seat, and the third support seat is connected to the mounting base plate;

[0023] The number of the detection holes is the same as that of the second mounting holes, and when a transmission signal passes through each detection hole, the other end of the reversing pipe is opposite to a second mounting hole.

[0024] Furthermore, the delivery pipeline a is connected to a first beam sensor.

[0025] Furthermore, the delivery pipe b is connected to a second beam sensor.

[0026] Beneficial effects of the present invention:

[0027] (1) The pneumatic conveying system switch of the present invention drives the transmission mechanism through the driving mechanism to drive the reversing pipeline to rotate so as to switch different conveying pipelines. The structure is simple and the manufacturing cost is low.

[0028] (2) A pneumatic conveying system switch of the present invention can control the rotation position of the reversing pipe by providing a plurality of detection holes and a pair of in-position detectors, thereby improving the alignment accuracy between the reversing pipe and different conveying pipes.

[0029] (3) In a pneumatic conveying system switch of the present invention, a turntable is arranged on one end of the reversing pipe close to the second support seat, and the turntable is closely connected to the second support seat, which can improve the sealing between the reversing pipe and the second mounting hole.

[0030] (4) The pneumatic conveying system switch of the present invention can transport the irradiated sample boxes to different destinations according to different work tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a pneumatic conveying system switch of the present invention;

[0032] Figure 2 is a top view of an embodiment of a pneumatic conveying system circuit changer of the present invention;

[0033] Figure 3 is a cross-sectional view of an embodiment of a pneumatic conveying system circuit changer of the present invention;

[0034] Figure 4 It is a structural schematic diagram of a transition piece in an embodiment of a pneumatic conveying system switcher of the present invention;

[0035] Figure 5 It is a schematic diagram of the working principle of an embodiment of a pneumatic conveying system circuit changer of the present invention when in use.

[0036] In the figure, 1-first support seat; 2-second support seat; 3-transmission mechanism, 301-transmission shaft, 302-transition piece, 303-third mounting hole; 4-driving mechanism; 5-reversing pipe; 6-first counter-shooting sensor; 7-second counter-shooting sensor; 8-detection plate; 9-in-place detection sensor; 10-turntable; 11-mounting base plate; 12-third support seat; 13-injector; 14-pneumatic conveying system switcher. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] This embodiment provides a pneumatic conveying system switch 14, such as Figures 1 to 5 As shown, the pneumatic conveying system circuit changer 14 includes a first support base 1, a second support base 2, a transmission mechanism 3, a driving mechanism 4 and a reversing pipe 5.

[0039] A first mounting hole is provided on the first support seat 1, and a delivery pipe a extending away from the second support seat 2 is connected to the first mounting hole on the first support seat 1;

[0040] A side of the second support base 2 away from the first support base 1 is fixedly connected to the driving mechanism 4. Figure 1 As shown, three second mounting holes are evenly arranged on the second support seat 2 at positions equidistant from the output shaft of the driving mechanism 4, and a delivery pipe b is connected to each second mounting hole on the second support seat 2, and the delivery pipe b and the driving mechanism 4 are located on the same side of the second support seat 2; the three delivery pipes b are respectively connected to one end of the three second mounting holes away from the reversing pipe 5.

[0041] In this embodiment, the output shaft of the driving mechanism 4 is connected to the transmission mechanism 3 to drive the transmission mechanism 3 to rotate a preset angle. The preset angle is based on the angle between adjacent second mounting holes on the second support seat 2; for example, when three second mounting holes are provided on the second support seat 2, and the three second mounting holes are arranged in a circular array around the rotation axis of the transmission mechanism 3, and two adjacent second mounting holes are 120° apart, the preset angle is 120°.

[0042] The first support seat 1 and the second support seat 2 are rotatably connected to a transmission mechanism 3, the central axis of the transmission mechanism 3 is coaxially arranged with the output shaft of the driving mechanism 4 and the first mounting hole, and the end of the transmission mechanism 3 is fixedly connected to the output shaft of the driving mechanism 4, and the reversing pipe 5 is fixedly connected to the transmission mechanism 3;

[0043] One end of the reversing pipe 5 is rotatably connected to the first support seat 1 and communicated with the first mounting hole, and the other end extends to the surface of the second support seat 2, and the distance between the central axis of the port at the other end and the central axis of the transmission mechanism 3 is equal to the distance between the central axis of the second mounting hole and the central axis of the transmission mechanism 3.

[0044] Figure 5 The working process of the pneumatic conveying system switch 14 of this embodiment is as follows: the sample box enters the pneumatic conveying system from the sample injector 13, and the second mounting hole to be connected with the first mounting hole is determined according to the selected conveying route of the sample box. The driving mechanism 4 drives the transmission mechanism 3 to rotate, and the reversing pipe 5 installed on the transmission mechanism 3 rotates accordingly, and the reversing pipe 5 is connected with the determined second mounting hole. The sample box enters from the first mounting hole and then passes through the reversing pipe 5 and then outputs from the determined second mounting hole, or the sample box enters from the determined second mounting hole and then passes through the reversing pipe 5 and then outputs from the first mounting hole. Finally, the sample box is transported to the measuring tube, the receiver, the multi-sample storage, the irradiation tube or the waste tank under the action of the airflow. Therefore, the pneumatic conveying system 14 provided in this embodiment can switch the conveying pipe, so that the sample box enters the corresponding working device according to the set route, and then can perform different work tasks on the samples in the sample box.

[0045] like Figure 3 As shown, the transmission mechanism 3 includes a transmission shaft 301 and a transition piece 302; both ends of the transmission shaft 301 are rotatably connected to the first support seat 1 and the second support seat 2, the central axis of the transmission shaft 301 is in the same straight line as the output shaft of the drive mechanism 4 and the center of the first mounting hole, and the end of the transmission shaft 301 is fixedly connected to the output shaft of the drive mechanism 4; one end of the reversing pipe 5 connected to the first mounting hole is inside the transmission shaft 301, and the other end passes through the transmission shaft 301 and extends to the surface of the second support seat 2; the transition piece 302 is sleeved on one end of the transmission shaft 301 close to the second support seat 2, as shown in FIG. Figure 4A third mounting hole 303 is provided on the transition piece 302 , and one end of the reversing pipe 5 close to the second support seat 2 is fixedly connected in the third mounting hole 303 of the transition piece 302 .

[0046] When it is necessary to switch the pipeline, the driving mechanism 4 drives the transmission shaft 301 to rotate, and the transition piece 302 connected to the transmission shaft 301 rotates with the transmission shaft 301, and the end of the reversing pipe 5 in the third mounting hole 303 is rotated to align with the selected second mounting hole.

[0047] Continue to refer to Figure 3 The two ends of the transmission shaft 301 are respectively rotatably connected to the first support seat 1 and the second support seat 2, wherein the rotatable connection is that the transmission shaft 301 rotates relative to the first support seat 1 and the second support seat 2. The specific connection method is: bearings are provided at both ends of the transmission shaft 301, and the first support seat 1 and the second support seat 2 are both provided with bearing seats, and the bearings at both ends of the transmission shaft 301 are installed in the bearing seats of the first support seat 1 and the second support seat 2.

[0048] like Figure 3 As shown, in this embodiment, the transmission shaft 301 includes a first mounting tube, a shaft tube and a second mounting tube whose central axes are on the same straight line; the first mounting tube is rotatably connected to the first support seat 1 and is communicated with the first mounting hole, the second mounting tube is rotatably connected to the second support seat 2, and the two ends of the shaft tube are respectively connected to the first mounting tube and the second mounting tube by flanges or welding or bonding; an opening is opened on the shaft tube, and the other end of the reversing pipe 5 passes through the opening and extends to the surface of the second support seat 2; in this embodiment, the transition piece 302 is sleeved at the connection between the second mounting tube and the shaft tube.

[0049] A first fixing groove is formed at one end of the second mounting tube connected to the shaft tube, and a second fixing groove is formed on the shaft tube where it is connected to the second mounting tube. A protrusion is connected to each of the two side surfaces of the transition piece 302, and the two protrusions are respectively connected to the first fixing groove and the second fixing groove.

[0050] In this embodiment, the first fixing groove and the second fixing groove respectively position and fix the two protrusions, so that the transition piece 302 is accurately connected to the shaft tube, thereby ensuring that the end of the reversing pipe 5 in the third mounting hole 303 can be aligned with the selected second mounting hole.

[0051] In this embodiment, refer to Figure 1 The pneumatic conveying system switch 14 also includes two first beamforming sensors 6 and two second beamforming sensors 7. The conveying pipeline a is connected to the first beamforming sensors 6, and the conveying pipeline b is connected to the second beamforming sensors 7.

[0052] The two first counter-radiation sensors 6 can detect whether the sample box enters the reversing pipe 5 from the first mounting hole, or whether it moves out of the reversing pipe 5 from the first mounting hole; the two second counter-radiation sensors 7 can detect whether the sample box enters the reversing pipe 5 from the corresponding second mounting holes, or whether it moves out of the reversing pipe 5 from the second mounting holes.

[0053] In this embodiment, one end of the transmission mechanism 3 close to the first support seat 1 is connected to the detection plate 8, and a plurality of detection holes are provided on the detection plate 8; a pair of in-place detectors 9 are arranged on both sides of the detection plate 8, one of the in-place detectors 9 is fixedly connected to the first support seat 1, and the other in-place detector 9 is connected to the third support seat 12, and the third support seat 12 is connected to the mounting base plate 11; one of the in-place detectors 9 is used to transmit a signal, and after passing through one of the detection holes, it is incident on the other in-place detector 9; the number of the detection holes is the same as the number of the second mounting holes, and when a transmitting signal passes through each detection hole, the other end of the reversing pipe 5 is opposite to a second mounting hole.

[0054] When the driving mechanism 4 drives the transmission mechanism 3 to rotate, the detection plate 8 rotates with the transmission mechanism 3. When a pair of in-position detection sensors 9 are aligned with the detection holes on the detection plate 8, the end of the reversing pipe 5 is aligned with the selected second installation hole. Therefore, by receiving the in-position detection sensor 9, it can be determined whether the transmission mechanism 3 is rotated in place, and then whether the end of the reversing pipe 5 is aligned with the selected second installation hole.

[0055] In this embodiment, the driving mechanism 4 is a reduction motor, which is fixedly connected to a side of the second support base 2 away from the first support base 1 , and the output shaft of the reduction motor passes through the second support base 2 to connect to the transmission mechanism 3 .

[0056] When it is necessary to switch the conveying pipeline, the shaft of the reduction motor rotates, driving the transmission mechanism 3 to rotate. When the in-place detection sensor 9 detects that the end of the reversing pipeline 5 is aligned with the selected second mounting hole, the servo motor 410 stops rotating, thereby aligning the end of the reversing pipeline 5 with the selected second mounting hole.

[0057] In the pneumatic conveying system changer 14 of the present embodiment, it also includes a turntable 10, which is sleeved on the transmission mechanism 3 and the reversing pipe 5 at one end close to the second support seat 2. The turntable 10 is closely connected to the second support seat 2, and is used for dynamically sealing the reversing pipe 5 and the second mounting hole of the second support seat 2.

[0058] When the driving mechanism 4 drives the transmission mechanism 3 to rotate, the turntable 10 rotates with the transmission mechanism 3 and maintains a seal with the first support seat 1, thereby preventing air leakage at the end of the reversing pipe 5 and ensuring that the sample box can move smoothly in the reversing pipe 5.

[0059] The above description is only a specific embodiment of the present invention, and a comparison of the effects of the specific embodiments and the related comparative examples, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pneumatic conveying system switch, characterized in that: It comprises a mounting base (11), on which a first support seat (1) and a second support seat (2) are relatively connected; The first support seat (1) is provided with a first mounting hole, and the first support seat (1) is connected to a delivery pipe a located at the first mounting hole and extends in a direction away from the second support seat (2); A surface of the second support seat (2) away from the first support seat (1) is fixedly connected to the driving mechanism (4); a plurality of second mounting holes are evenly arranged along the circumferential direction at positions equidistant from the output shaft of the driving mechanism (4) on the second support seat (2); a delivery pipe b is connected to each second mounting hole on the second support seat (2), and the delivery pipe b and the driving mechanism (4) are located on the same side of the second support seat (2); The first support seat (1) and the second support seat (2) are rotatably connected to a transmission mechanism (3); a central axis of the transmission mechanism (3) is coaxially arranged with an output shaft of the drive mechanism (4) and a first mounting hole; an end of the transmission mechanism (3) is fixedly connected to the output shaft of the drive mechanism (4); and a reversing pipe (5) is fixedly connected to the transmission mechanism (3); One end of the reversing pipe (5) is rotatably connected to the first support seat (1) and communicated with the first mounting hole, and the other end extends to the surface of the second support seat (2), and the distance between the central axis of the port of the other end and the central axis of the transmission mechanism (3) is equal to the distance between the central axis of the second mounting hole and the central axis of the transmission mechanism (3).

2. A pneumatic conveying system switch according to claim 1, characterized in that: The transmission mechanism (3) comprises a transmission shaft (301) and a transition piece (302); The two ends of the transmission shaft (301) are rotatably connected to the first support seat (1) and the second support seat (2); the central axis of the transmission shaft (301) is coaxially arranged with the output shaft of the drive mechanism (4) and the first mounting hole, and the end of the transmission shaft (301) is fixedly connected to the output shaft of the drive mechanism (4); one end of the reversing pipe (5) connected to the first mounting hole is arranged in the transmission shaft (301), and the other end passes through the transmission shaft (301) and extends to the surface of the second support seat (2); The transition piece (302) is sleeved on one end of the transmission shaft (301) close to the second support seat (2), a third mounting hole (303) is provided on the transition piece (302), and one end of the reversing pipe (5) close to the second support seat (2) is fixedly connected in the third mounting hole (303) of the transition piece (302).

3. A pneumatic conveying system switch according to claim 2, characterized in that: The transmission shaft (301) comprises a first mounting tube, a shaft tube and a second mounting tube which are coaxially arranged; The first mounting tube is rotatably connected to the first support seat (1) and communicated with the first mounting hole, the second mounting tube is rotatably connected to the second support seat (2) and connected to the output shaft of the driving mechanism (4), and the two ends of the shaft tube are respectively connected to the first mounting tube and the second mounting tube by flanges or welding or bonding; An opening is formed on the shaft tube, and the other end of the reversing pipe (5) passes through the opening and extends to the surface of the second support seat (2); The transition piece (302) is sleeved at the connection between the second mounting tube and the shaft tube.

4. A pneumatic conveying system switch according to claim 3, characterized in that: A first fixing groove is formed at one end of the second mounting tube connected to the shaft tube, and a second fixing groove is formed at the shaft tube where it is connected to the second mounting tube. A protrusion is respectively connected to two side surfaces of the transition piece (302), and the two protrusions are respectively connected to the first fixing groove and the second fixing groove.

5. The pneumatic conveying system switch according to claim 1, characterized in that: The driving mechanism (4) is a reduction motor, which is fixedly connected to a side of the second support seat (2) away from the first support seat (1), and the output shaft of the reduction motor passes through the second support seat (2) to connect to the transmission mechanism (3).

6. The pneumatic conveying system switch according to claim 1, characterized in that: The first support seat (1) and the second support seat (2) are respectively connected to a bearing seat, each bearing seat is connected to a bearing, and both ends of the transmission mechanism (3) are connected to the bearings.

7. The pneumatic conveying system switch according to claim 1, characterized in that: It also comprises a rotating disk (10), wherein the rotating disk (10) is sleeved on the transmission mechanism (3) and one end of the reversing pipe (5) close to the second support seat (2), and the rotating disk (10) is closely connected to the second support seat (2). The rotating disk (10) is used to dynamically seal the second mounting hole of the reversing pipe (5) and the second support seat (2).

8. The pneumatic conveying system switch according to claim 1, characterized in that: One end of the transmission mechanism (3) close to the first support seat (1) is connected to a detection plate (8), and a plurality of detection holes are provided on the detection plate (8); a transmitting end and a receiving end of an in-position detector (9) are provided on both sides of the detection plate (8), wherein the transmitting end of the in-position detector (9) is fixedly connected to the first support seat (1), and the receiving end of the in-position detector (9) is connected to a third support seat (12), and the third support seat (12) is connected to the mounting base plate (11); The number of the detection holes is the same as that of the second mounting holes, and when a transmission signal passes through each detection hole, the other end of the reversing pipe (5) is opposite to a second mounting hole.

9. The pneumatic conveying system switch according to claim 1, characterized in that: The conveying pipeline a is connected to a first beam-receiving sensor (6).

10. The pneumatic conveying system switch according to claim 1, characterized in that: The conveying pipe b is connected to a second beam sensor (7).

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