Pipeline blocking mechanism and blood purification equipment
By using a pipeline blocking mechanism in the blood purification equipment, the movable and elastic connections of the blocking parts and the connecting parts are used to identify the pipeline position, the noise and vibration problems caused by frequent start and stop of the electromagnet in the prior art are solved, and the service life of the equipment is extended and the control accuracy is improved.
Patent Information
- Application Number
- CN202421105536.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In existing blood purification equipment, frequent start and stop of electromagnets and blocking parts lead to increased noise and vibration, and shortened service life.
A pipeline blocking mechanism is adopted, including an installation unit, a blocking member, a connecting member, a driving unit and a detection unit. Through the active connection of the blocking member and the connecting member, the elastic connection and trigger module are used to identify the pipeline position to reduce the frequent start and stop of the driving unit.
Reduces the frequency of the electromagnet and blocking members hitting the bracket, reduces the noise and vibration of the device, extends the service life, and improves control accuracy.
Smart Images
Figure CN222549973U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a pipeline blocking mechanism and blood purification equipment. Background Art
[0002] Blood purification therapy refers to the process of drawing human blood out of the body through a blood purification system, followed by the blood purifier of the blood purification system filtering out specific molecular substances in the blood, and then returning the purified blood to the human body to achieve the effect of disease treatment. During the blood purification treatment of patients, in order to control the entire blood purification system to perform purification operations according to the preset program, it is usually necessary to set a tube clamping device at different positions in the blood purification system pipeline, and the pipeline at the setting position is configured as a flexible tube, and the tube clamping device is used to clamp the flexible tube to block the flow of liquid in it.
[0003] In the prior art, an electric tube clamping device is proposed to control the opening and closing of the flexible tube at the aforementioned position. The device includes a bracket, a slot for placing the flexible tube, an electromagnet, and a blocking piece fixedly connected to the electromagnet. Under the action of the electromagnet, the blocking piece presses the flexible tube against the inner wall of the slot to flatten the flexible tube, thereby blocking the flow of the fluid inside the blocking piece. In order to detect whether there is a pipeline in the slot, some devices are also provided with a detection contact / pressure sensor at the end of the blocking piece away from the electromagnet. However, the electric tube clamping device requires the electromagnet to drive the blocking piece to move each time it is detected, resulting in the need to frequently start and stop the electromagnet, which greatly increases the frequency of the electromagnet and the blocking piece hitting the bracket, generates more noise and vibration, and shortens the service life of the device. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a pipeline blocking mechanism, which greatly reduces the frequency of the electromagnet and the blocking member hitting the bracket, thereby reducing the noise and vibration of the device during operation and extending its service life.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A pipeline blocking mechanism comprises: an installation unit, a blocking piece, a connecting piece, a driving unit and a detection unit, wherein the installation unit is provided with a block, the blocking piece is elastically connected to the installation unit and / or the connecting piece, and one end of the blocking piece and the block form a slot for accommodating the pipeline, the connecting piece is movably connected to the blocking piece, and a first trigger module is provided on both the blocking piece and the connecting piece; the driving unit is connected to the connecting piece for driving the connecting piece to approach or move away from the block; the detection unit comprises second trigger modules corresponding to the first trigger modules respectively.
[0007] Compared with the prior art, the utility model has the following beneficial effects:
[0008] Since the blocking piece and the connector are movably connected, and the blocking piece is elastically connected to the installation unit / connector, when the pipeline is placed into the slot, the blocking piece is displaced under the drive of the pipeline, causing its first trigger module to be misaligned with the corresponding second trigger module on the detection unit. At this time, a signal is sent to identify whether the pipeline is placed in the slot; this identification process does not require the participation of the drive unit, avoiding repeated starting and stopping of the drive unit, and causing the blocking piece to frequently hit the bracket, reducing the noise and vibration of the device during operation, and extending its service life. In addition, another set of trigger modules is used to identify the drive unit and output signals to achieve negative feedback, so that the blocking piece and the drive unit can be independent of each other, and can also work in coordination through signal feedback, thereby improving the control accuracy of the device.
[0009] As a preferred solution, the end of the blocking member facing away from the stopper is sleeved on the connecting member and the two can move relatively, the outer wall of the connecting member is provided with a first shoulder, and the blocking member is provided with an undercut structure and a second shoulder for limiting the movement of the connecting member relative to the blocking member.
[0010] As a preferred solution, an end of the blocking member facing away from the stopper is provided with an open groove.
[0011] As a preferred solution, a sliding block which can slide along the opening groove is fixedly provided on the connecting member.
[0012] As a preferred solution, a first buffer is provided at the end of the connecting member opposite to the second shoulder.
[0013] As a preferred solution, a second buffer member is provided between the blocking member and the mounting unit.
[0014] As a preferred solution, the first trigger module includes a shielding structure and is respectively fixed on the blocking member and the connecting member, and the second trigger module includes two groups of photoelectric switches and they correspond to the shielding structure one by one.
[0015] As a preferred solution, it also includes a closing member elastically connected to the mounting unit to close the opening of the card slot.
[0016] As a preferred solution, the mounting unit comprises a bracket, a limiting groove is provided on the bracket, one end of the detection unit is fixed on the bracket, and the other end thereof is clamped on the limiting groove.
[0017] In view of the deficiencies in the prior art, the utility model also provides a blood purification device, which greatly reduces the frequency of the electromagnet and the blocking member hitting the bracket, thereby reducing the noise and vibration of the device during operation and extending its service life.
[0018] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0019] A blood purification device comprises a pipeline blocking mechanism as described in any one of the above. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of the overall structure of the pipeline blocking mechanism in some embodiments;
[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure;
[0022] Figure 3 for Figure 2 A local enlarged view of point A;
[0023] Figure 4 for Figure 2 Schematic diagram of the explosion structure.
[0024] In the above drawings:
[0025] 1. Bracket; 101. Limiting groove; 2. Fixing seat; 201. Block; 3. Blocking member; 301. Undercut structure; 302. Second shoulder; 303. Opening groove; 4. First spring; 5. Connecting member; 501. First shoulder; 502. Slider; 6. Driving unit; 7. Circuit board; 8. Shielding structure; 9. Photoelectric switch; 10. First buffer member; 11. Second buffer member; 12. Closing member. DETAILED DESCRIPTION
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; the structures described in the various embodiments can be freely combined without any conflict in structure or principle.
[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0029] The following is a description of some embodiments of the present invention in conjunction with the accompanying drawings:
[0030] like Figures 1 to 4 As shown, the utility model proposes a pipeline blocking mechanism, including: a mounting unit, a blocking member 3, a connecting member 5, a driving unit 6 and a detection unit.
[0031] For example, see Figures 1 to 3 The mounting unit includes a bracket 1 and a fixing seat 2. The fixing seat 2 is fixed to the bracket 1 by bolts and other fasteners. The fixing seat 2 is cylindrical in shape as a whole. The left end of the fixing seat 2 extends upward to form a stopper 201. The blocking member 3 is elastically connected to the mounting unit and / or the connecting member 5. Specifically, in this embodiment, the blocking member 3 is elastically connected to the connecting member 5 by a first spring 4; the left end of the blocking member 3 and the stopper 201 form a slot with a top opening, which is used to accommodate the pipeline. The connecting member 5 is movably connected to the blocking member 3, and the blocking member 3 and the connecting member 5 are both provided with a first trigger module.
[0032] The driving unit 6 is connected to the connecting member 5 and is used to drive the connecting member 5 to move closer to or away from the block 201. The driving unit 6 takes an electromagnetic device as an example. The electromagnetic device includes a shell and a coil and an electromagnet installed in the shell. The shell is fixed to the bracket 1 by fasteners such as screws, and the connecting member 5 is fixedly connected to the flange at the left end of the electromagnet by fasteners such as screws. When the coil is energized, it attracts the electromagnet to move right (it should be understood that the electromagnetic device itself is a prior art, and the accompanying drawings do not actually show its internal structure).
[0033] The detection unit includes a second trigger module and a circuit board 7; for ease of understanding, illustratively, as Figure 4 As shown, the first trigger module is configured to include a shielding structure 8, two shielding structures 8 are provided and are respectively fixed on the outer walls of the blocking member 3 and the connecting member 5, and the second trigger module includes two groups of photoelectric switches 9, the two groups of photoelectric switches 9 are arranged side by side and correspond one by one to the shielding structure 8 respectively; the circuit board 7 is circuit-connected to the two groups of photoelectric switches 9.
[0034] Using the above solution,
[0035] Since the blocking member 3 and the connecting member 5 are movably connected, and the blocking member 3 is elastically connected to the connecting member 5, when the pipeline is placed into the slot, the blocking member 3 is displaced to the right under the drive of the pipeline, causing the shielding structure 8 on the blocking member 3 to be misaligned with the corresponding photoelectric switch 9 on the detection unit. At this time, a signal is sent to identify whether the pipeline is placed in the slot; this identification process does not require the participation of the drive unit 6, avoiding repeated starting and stopping of the drive unit 6, and causing the blocking member 3 to frequently hit the bracket 1, reducing the noise and vibration of the device operation, and extending its service life. In addition, another set of trigger modules is used to identify the drive unit 6 and output signals to achieve negative feedback, so that the blocking member 3 and the drive unit 6 can be independent of each other and can work in coordination through signal feedback.
[0036] Exemplarily, when the electromagnet is not energized and the pipeline is not installed, the electromagnet is not attracted, and the connecting member 5 and the shielding structure 8 of the blocking member 3 installed on the electromagnet respectively shield the corresponding photoelectric switch 9, and the circuit board 7 outputs the first signal.
[0037] When the electromagnet is energized and the pipeline is not installed, the electromagnet is attracted, and the connecting member 5 installed on the electromagnet moves to the right. The shielding structure 8 on the connecting member 5 does not shield the corresponding photoelectric switch 9. Under the action of the first spring 4, the blocking member 3 does not move, and the shielding structure 8 of the blocking member 3 shields the corresponding photoelectric switch 9. At this time, the circuit board 7 outputs the second signal.
[0038] When the electromagnet is energized and the pipeline is installed, the electromagnet is attracted and the connecting piece 5 installed on the electromagnet is displaced to the right. At this time, the shielding structure 8 on the connecting piece 5 does not shield the corresponding photoelectric switch 9. The pipeline is taken and squeezed by one hand. The pipeline slides downward into the slot surrounded by the block 201 and the blocking piece 3. The blocking piece 3 is displaced to the right under the action of the pipeline, and its shielding structure 8 does not shield the corresponding photoelectric switch 9. At this time, the circuit board 7 outputs the third signal.
[0039] When the electromagnet is powered off and the pipeline is installed, the electromagnet is not attracted, and the connecting piece 5 installed on the electromagnet moves to the left, and the shielding structure 8 on the connecting piece 5 shields the corresponding photoelectric switch 9 until the connecting piece 5 pushes the blocking piece 3 to move to the left together, thereby blocking the pipeline; the blocking piece 3 moves to the left, and the shielding structure 8 thereon shields the corresponding photoelectric switch 9. At this time, the circuit board 7 outputs the fourth signal.
[0040] By collecting and analyzing the above-mentioned multiple signals, the position of the partition piece can be detected separately to determine whether the pipeline is located in the slot, and the position of the electromagnet can be detected separately to determine whether it is working normally; the electromagnet and the partition piece can also be made to cooperate with each other to improve the control accuracy and safety of the blocking mechanism.
[0041] As a preferred solution, Figure 2 and Figure 3 As shown, the end of the blocking member 3 away from the stopper 201 is sleeved on the connecting member 5 and the two can move relatively. The left end outer wall of the connecting member 5 is provided with a first shoulder 501, and the right end of the blocking member 3 is provided with an undercut structure 301. The undercut structure 301 is stuck on the first shoulder 501 of the connecting member 5, which can limit the relative displacement of the blocking member 3 and the connecting member 5 to prevent the two from falling off. The inner wall of the blocking member 3 is also provided with a second shoulder 302, and the second shoulder 302 can also limit the relative displacement of the blocking member 3 and the connecting member 5, that is, when the connecting member 5 moves to the left, the left end face of the connecting member 5 can push the second shoulder 302 to move to the left together. In this way, the connecting member 5 and the blocking member 3 have a simple structure, are easy to manufacture, and have a low cost, and realize the movable connection between the connecting member 5 and the blocking member 3.
[0042] As a preferred solution, Figure 3 and Figure 4 As shown, the right end of the blocking member 3 is provided with an open groove 303, the right end of the open groove 303 is open and penetrates from top to bottom; illustratively, the open groove 303 is provided in plurality and distributed on the ring side of the blocking member 3. The design of the open groove 303 can make the blocking member 3 slightly deformed during the process of the right end of the blocking member 3 being sleeved on the left end of the connecting member 5, so that the blocking member 3 can be more smoothly clamped on the connecting member 5; of course, the blocking member 3 itself can also be made of plastic material, which is more conducive to deformation so that its right end can be clamped on the connecting member 5.
[0043] As a preferred solution, a slider 502 is fixedly provided on the outer wall of the connecting member 5 , and the slider 502 can slide along one of the opening grooves 303 ; thus, the slider 502 limits the circumferential guide of the blocking member 3 to prevent it from rotating.
[0044] As a preferred solution, Figure 3 As shown, a first buffer 10 is provided at one end of the connecting member 5 opposite to the second shoulder 302. For example, the first buffer 10 includes an O-ring; the left end of the connecting member 5 squeezes the O-ring to further reduce the impact vibration and noise when the mechanism is working.
[0045] As a preferred solution, Figure 2 and Figure 4 As shown, a second buffer 11 is provided between the blocking member 3 and the mounting unit; illustratively, the second buffer 11 is a rubber pad, which is nested on the outer wall of the blocking member 3; the fixing seat 2 of the mounting unit is provided with a third shoulder; the blocking member 3 is moved to the left to press the rubber pad on the third shoulder, further reducing the impact noise when the mechanism is working. In addition, the first buffer 10 and the second buffer 11 are made of different materials and structures, and the combined use can absorb vibrations and noises of different frequencies, with better effects.
[0046] As a preferred solution, a guide bevel is provided at the opposite end of the blocking member 3 and the stopper 201 to facilitate the pipeline to slide into the slot.
[0047] As a preferred solution, it also includes a closing piece 12 elastically connected to the mounting unit; illustratively, a hole is provided on the fixing seat 2, and the closing piece 12 is elastically connected in the hole along the moving direction of the blocking piece 3 by a spring. When the operator squeezes the closing piece 12 with one hand, the closing piece 12 can move rightward and backward; after the pipeline enters the slot, the spring drives the closing piece 12 to move leftward until the opening of the slot is closed to prevent the pipeline from falling out of the slot.
[0048] As a preferred solution, Figure 1 As shown, a limiting groove 101 is provided on the bracket 1, and the bottom end of the circuit board 7 of the detection unit is fixed to the bracket 1 by fasteners such as screws, and the top end of the circuit board 7 is stuck in the limiting groove 101. In this way, the circuit board 7 is easy to install and firmly fixed.
[0049] Furthermore, the fixing base 2 is designed to be open on two opposite sides, and the circuit board 7 is fixed on one of the sides, so as to optimize the heat dissipation of the circuit board 7 .
[0050] The utility model also provides a blood purification device, which has any one of the above-mentioned pipeline blocking mechanisms. The blood purification device greatly reduces the frequency of the electromagnet and the blocking member 3 hitting the bracket 1, thereby reducing the noise and vibration of the device operation, extending its service life, and also improving the control accuracy and safety of the mechanism.
Claims
1. A pipeline blocking mechanism, characterized in that: include: A mounting unit, a blocking member (3), a connecting member (5), a driving unit (6) and a detection unit, wherein the mounting unit is provided with a blocking block (201), the blocking member (3) is elastically connected to the mounting unit and / or the connecting member (5), and one end of the blocking member and the blocking member (201) form a slot for accommodating a pipeline, the connecting member (5) is movably connected to the blocking member (3), and a first trigger module is provided on both the blocking member (3) and the connecting member (5); the driving unit (6) is connected to the connecting member (5) for driving the connecting member (5) to move closer to or away from the blocking block (201); and the detection unit comprises second trigger modules corresponding to the first trigger modules.
2. A pipeline blocking mechanism according to claim 1, characterized in that: The end of the blocking member (3) facing away from the stopper (201) is sleeved on the connecting member (5) and the two can move relative to each other. The outer wall of the connecting member (5) is provided with a first shoulder (501), and the blocking member (3) is provided with an undercut structure (301) and a second shoulder (302) for limiting the movement of the connecting member (5) relative to the blocking member (3).
3. A pipeline blocking mechanism according to claim 2, characterized in that: An end of the blocking member (3) facing away from the stopper (201) is provided with an open groove (303).
4. A pipeline blocking mechanism according to claim 3, characterized in that: The connecting member (5) is fixedly provided with a sliding block (502) which can slide along the opening groove (303).
5. A pipeline blocking mechanism according to any one of claims 2 to 4, characterized in that: A first buffer member (10) is provided at an end of the connecting member (5) opposite to the second shaft shoulder (302).
6. A pipeline blocking mechanism according to claim 5, characterized in that: A second buffer member (11) is provided between the blocking member (3) and the mounting unit.
7. A pipeline blocking mechanism according to any one of claims 1 to 4, characterized in that: The first trigger module comprises a shielding structure (8) which is fixed on the blocking member (3) and the connecting member (5) respectively, and the second trigger module comprises two groups of photoelectric switches (9) which correspond to the shielding structure (8) one by one respectively.
8. A pipeline blocking mechanism according to claim 7, characterized in that: It also comprises a closing piece (12) elastically connected to the mounting unit and used for closing the opening of the card slot.
9. A pipeline blocking mechanism according to any one of claims 1 to 4, characterized in that: The mounting unit comprises a bracket (1), a limiting groove (101) is provided on the bracket (1), one end of the detection unit is fixed on the bracket (1), and the other end thereof is clamped on the limiting groove (101).
10. A blood purification device, characterized in that: The device has a pipeline blocking mechanism as claimed in any one of claims 1 to 9.