Structure for controlling on-off of multiple channels

Abstract

The utility model relates to the technical field of medical instrument fluid control, in particular to a structure for controlling on-off of multiple channels. The multi-channel flow channel on-off control structure comprises a base plate and a pressing plate, a fixing seat is arranged on the upper plate face of the base plate, and a fixing frame is connected to the lower plate face of the base plate. A multi-channel assembly is arranged on the fixed seat and comprises a plurality of hoses; a rotating column is rotationally connected into the fixing base, a plurality of liquid passing grooves are formed in the outer wall of the rotating column in the length direction in a staggered mode, and the hoses abut against the liquid passing grooves; the liquid passing groove can be matched with the hose to ensure that liquid passes through smoothly; the rotating column is powered by a driving mechanism to rotate; the pressing plate is fixed on the fixed seat through the pressing mechanism; a sliding hole is formed in the pressing plate, and a meshing assembly is arranged in the sliding hole; the occlusion assembly abuts against the hose so as to ensure that when the liquid passing groove rotates away from the hose, liquid can be prevented from passing through the hose. Under the mute condition, the synchronous control of the multi-channel fluid pipeline can be realized under the driving of the same power source.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical instrument fluid control, and in particular to a control multi-channel flow passage on-off structure. BACKGROUND

[0002] In many fields such as industrial production, experimental research and medical equipment, the control of multi-channel flow passage on-off is widely required. With the continuous development of various industries, the requirement for precise and efficient control of different types of liquid in the multi-channel flow passage is increasingly improved. Precise flow passage on-off control can ensure the stability of the production process, the accuracy of the experimental results and the safety of the medical operation, etc., and is of great significance to improve the performance and efficiency of the overall system.

[0003] At present, in the control of multi-channel flow passage on-off, the common means are to use traditional electromagnetic valves to control the opening and closing of the flow passage. The electromagnetic valve realizes the opening and closing of the valve through the action of electromagnetic force, and has the characteristics of relatively fast response speed. In addition, pneumatic valves are also used to drive the valve action by using compressed air to realize the on-off control of the flow passage.

[0004] However, in the field of medical instruments, the requirement for precise on-off control of blood inlet, cleaning and emptying of the pipeline in the autologous blood recovery machine exists. The traditional electromagnetic valve control method has the risk of electromagnetic interference, which affects the accuracy of the blood cell counter. The pneumatic valve needs to be equipped with a gas pump system, and the noise level is > 65dB(A), which does not meet the requirement of silence in the operating room. CONTENT OF THE INVENTION

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the present application provides a control multi-channel flow passage on-off structure, which ensures that the valve bodies of each channel can be driven by the same power source to act synchronously, and realizes the synchronous control of the multi-channel fluid pipeline under the condition of meeting the requirement of silence in the operating room.

[0006] The present application is realized by the following technical solutions:

[0007] The utility model provides a control multi -pass flow channel on -off structure, including base plate and press -fitting plate, the base plate upper plate surface is equipped with fixed seat, the lower plate surface can detachably connect with fixed frame, be equipped with multichannel assembly on the fixed seat, multichannel assembly includes a plurality of for conveying different kinds of liquid hose, rotatingly connected with rotating column in the fixed seat, rotating column outer wall is equipped with a plurality of staggered arrangement liquid passage groove along the length direction, and liquid passage groove is adapted with hose, and rotating column is rotated by drive mechanism and is provided with power, the upper end of fixed seat is fixed with press -fitting plate, and the press -fitting plate is equipped with slide hole, and the slide hole is equipped with occlusion assembly, and occlusion assembly is located above liquid passage groove, is used for the extrusion pressure of hose, to make the pipeline of set hose can be in the state of blocking, wherein, only when rotating column rotates to set angle, liquid passage groove can provide the deformation recovery space of set hose, to make the pipeline of set hose be in the state of flowing.

[0008] By adopting the above technical scheme, the multichannel assembly on the fixed seat can realize the delivery of multiple liquids; the rotating column is rotatably connected to the fixed seat, and the staggered liquid passage grooves on the rotating column cooperate with the hoses to effectively control the on-off of the multiple flow channels; the drive mechanism can drive the rotating column to rotate at different angles to change the liquid passage state of the device, and when the liquid passage grooves align with the hoses, the liquid can flow smoothly; the press -fitting plate is fixed to the fixed seat by the press -fitting mechanism, and the occlusion assembly in the slide hole thereof abuts against the hoses, which can ensure that when the liquid passage grooves on the rotating column rotate away from the hoses, the hoses are closed under the action of the occlusion assembly to block the liquid from passing through the hoses, thereby effectively controlling the on-off of the multiple flow channels.

[0009] Optionally, the multichannel assembly includes a main pipe, which is embedded in the fixed seat and has a plurality of branch pipe interfaces for connecting the hoses uniformly distributed thereon.

[0010] By adopting the above technical scheme, the main pipe is embedded in the fixed seat to facilitate the overall installation and fixation of the multichannel assembly, and the branch pipe interfaces uniformly distributed on the main pipe facilitate the connection of a plurality of hoses for delivering different types of liquids, realizing the connection and arrangement of the multiple flow channels and being beneficial to the control of the on-off of the multiple flow channels.

[0011] Optionally, the branch pipe interfaces are obliquely arranged on the main pipe.

[0012] By adopting the above technical scheme, the branch pipe interfaces are obliquely arranged on the main pipe to facilitate the flow of liquid into the hoses, improving the smoothness and efficiency of liquid delivery.

[0013] Optionally, the occlusion assembly includes a top rod and an elastic member, and the top rod abuts against the hose under the elastic force provided by the elastic member.

[0014] By adopting the technical scheme, the elastic member in the occlusion assembly can ensure that the liquid passage groove provides elastic force for the jacking rod when rotating away from the hose, reduces the friction between the jacking rod and the rotating column, facilitates rotation of the rotating column, and further reduces energy consumption of the device.

[0015] Optionally, the mounting rack is detachably connected to the pressing plate.

[0016] By adopting the technical scheme, the mounting rack is detachably connected to the pressing plate, the mounting rack can be directly disassembled and replaced with the occlusion assembly, the entire pressing plate or the fixed seat does not need to be disassembled, and the maintenance efficiency is improved.

[0017] Optionally, the mounting rack top is provided with a support plate, the support plate is provided with a guide column, the upper end of the jacking rod is provided with a positioning groove matched with the elastic member, and the elastic member is sleeved on the guide column and located between the positioning groove and the support plate.

[0018] By adopting the technical scheme, the mounting rack top is provided with a support plate, the support plate is provided with a guide column, the upper end of the jacking rod is provided with a positioning groove matched with the elastic member, and the elastic member is sleeved on the guide column and located between the positioning groove and the support plate.

[0019] Optionally, the fixed rack has a U-shaped structure, the driving mechanism is fixed on the fixed rack and includes a servo motor, and the servo motor drives the rotating column to rotate through a transmission mechanism.

[0020] By adopting the technical scheme, the fixed rack with a U-shaped structure is convenient for stably installing the driving mechanism, the U-shaped structure ensures structural stability, the servo motor can accurately control the rotating angle of the rotating column, and the operation requirements of the operator at different stages are adapted.

[0021] Optionally, the transmission mechanism is provided with a protective cover outside.

[0022] By adopting the technical scheme, the protective cover provided on the transmission mechanism can prevent external factors from damaging the transmission mechanism, and prolong the service life of the transmission mechanism.

[0023] Optionally, one end of the pressing plate is hinged to the fixed seat through a hinge seat, the other end is pressed through a pressing mechanism, the pressing mechanism includes a handle, the pressing plate is provided with an opening groove matched with the handle, the opening groove is provided with a positioning pin, the handle is provided with a clamping groove matched with the positioning pin, and the handle is rotationally connected in the fixed seat.

[0024] By adopting the technical scheme, the opening groove matched with the handle is arranged in the pressing plate, the handle is rotationally connected to the fixing base, the clamping groove on the handle matches the positioning pin arranged in the opening groove, and thus the pressing plate can be pressed on the fixing base; one end of the pressing plate is hingedly connected to the fixing base through the hinge base, and thus when the handle is away from the opening groove, the pressing plate can rotate, and the components on the fixing base can be conveniently maintained and replaced.

[0025] Optionally, the pressing plate is provided with a plurality of observation holes matched with the hose.

[0026] By adopting the technical scheme, the observation holes matched with the hose are arranged on the pressing plate, and thus the operator can conveniently observe the on-off state of the hose, and prevent medical accidents caused by device failure.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The liquid passage grooves arranged in a staggered manner on the rotating column match the hose, liquid can smoothly pass through the hose when the liquid passage grooves are aligned with the hose by adjusting the angle of rotation of the rotating column;

[0029] 2. The occlusion assembly abuts against the hose, and when the rotating column is rotated to a set angle, liquid passing through the hose is blocked, electromagnetic interference problems in the traditional electromagnetic valve control mode are avoided, and the accuracy of the blood cell counter is ensured;

[0030] 3. The present application does not need to be equipped with a gas pump system, and will not produce noise higher than 65dB(A) like a pneumatic valve, which meets the quiet requirement of the operating room. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic view of a control multi-channel flow passage on-off structure described in embodiment one;

[0032] Figure 2 is a schematic view of the structure arrangement of the multi-channel assembly described in embodiment one;

[0033] Figure 3 is a schematic view of the structure of the occlusion assembly matched with the rotating column described in embodiment one;

[0034] Figure 4 is a schematic view of the local enlarged structure of the pressing assembly described in embodiment one;

[0035] Figure 5 is a schematic view of the structure of the driving assembly described in embodiment one;

[0036] Figure 6 is a schematic view of a control multi-channel flow passage on-off structure described in embodiment two;

[0037] Figure 7is a structural schematic diagram of the occlusion assembly described in Example Two.

[0038] In the figure: 1, base plate; 2, fixed seat; 21, rotating column; 211, liquid passage groove; 3, fixed frame; 31, driving mechanism; 311, servo motor; 312, transmission mechanism; 313, protective cover; 4, multi-channel assembly; 41, main pipe; 42, branch pipe interface; 43, hose; 5, pressing plate; 51, observation hole; 6, pressing mechanism; 61, handle; 62, positioning pin; 63, clamping groove; 7, sliding hole; 71, occlusion assembly; 711, top rod; 712, elastic member; 713, guide column; 714, positioning groove; 715, support plate; 8, mounting frame; 9, hinged seat. DETAILED DESCRIPTION

[0039] The technical solutions of the embodiments of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0040] Example One

[0041] With reference to Figures 1-3 The embodiments of the present application disclose a control multi-channel flow passage on-off structure, which comprises a base plate 1 and a pressing plate 5. The upper plate surface of the base plate 1 is provided with a fixed seat 2, and the lower plate surface is detachably connected with a fixed frame 3. The fixed seat 2 is provided with a multi-channel assembly 4, which comprises a plurality of hoses 43 for conveying different kinds of liquid. The fixed seat 2 is rotatably connected with a rotating column 21. The outer wall of the rotating column 21 is provided with a plurality of misaligned liquid passage grooves 211 along the length direction. The liquid passage grooves 211 are matched with the hoses 43. The rotating column 21 is rotated by a driving mechanism 31. The upper end of the fixed seat 2 is fixed with the pressing plate 5. The pressing plate 5 is provided with a sliding hole 7, and the sliding hole 7 is provided with an occlusion assembly 71. The occlusion assembly 71 is located above the liquid passage grooves 211 and is used for applying extrusion force to the hoses 43, so that the pipelines of the hoses 43 can be in a blocked state. Only when the rotating column 21 is rotated to a set angle, the liquid passage grooves 211 can provide a deformation recovery space for the set hoses 43, so that the pipelines of the set hoses 43 are in a flow-through state.

[0042] Specifically, with reference to Figures 1-3The upper plate surface of the substrate 1 is provided with a fixed seat 2, and the lower plate surface is detachably connected with a fixed frame 3. The fixed seat 2 is used for bearing the multi-channel assembly 4 and the rotating column 21 and the like, and can be made of metal such as aluminum alloy, has good strength and stability, and can also be replaced by high-strength plastic material. The fixed frame 3 is in a U-shaped structure, and its main function is to fix the driving mechanism 31, so as to facilitate the driving mechanism 31 to provide power for the rotating column 21. The fixed frame 3 can be made of metal such as stainless steel, or can be replaced by carbon fiber composite material, so as to reduce the weight while ensuring the structural strength. The outer side of the transmission mechanism 312 is provided with a protective cover 313, which can prevent dust and sundries from entering the transmission mechanism 312 and affecting its normal operation. The protective cover 313 can be made of plastic or metal sheet.

[0043] With reference to Figure 2 The multi-channel assembly 4 includes a main pipe 41 and a plurality of hoses 43 for conveying different kinds of liquid. The main pipe 41 is embedded in the fixed seat 2, and a plurality of branch pipe interfaces 42 for connecting the hoses 43 are uniformly distributed on the main pipe 41. The branch pipe interfaces 42 are arranged obliquely on the main pipe 41, which is beneficial to the smooth flow of liquid into the hoses 43 and reduces the resistance of liquid flow. The main pipe 41 can be made of plastic such as PVC, which is light and corrosion-resistant, and can also be replaced by a rubber pipe. The hoses 43 are usually made of silica gel, which has good flexibility and biocompatibility, and is suitable for use in the medical field. Other medical-grade flexible pipes can also be used instead.

[0044] With reference to Figure 3 The outer wall of the rotating column 21 is provided with a plurality of staggered liquid passage grooves 211 along the length direction. The plurality of hoses 43 are in abutment with the liquid passage grooves 211. When the liquid passage grooves 211 are aligned with the hoses 43, liquid can flow smoothly through the hoses 43. When the liquid passage grooves 211 on the rotating column 21 rotate away from the hoses 43, the hoses 43 are closed under the action of the clamping assembly 71, blocking the liquid from passing through the hoses 43. The pressing plate 5 is provided with a sliding hole 7 for guiding, and the sliding hole 7 is provided with the clamping assembly 71. The clamping assembly 71 is located above the liquid passage groove 211 and includes a top rod 711 and an elastic member 712. The top rod 711 is in abutment with the hose 43 under the elastic force provided by the elastic member 712. When the liquid passage groove 211 rotates away from the hose 43, the top rod 711 slides along the sliding hole 7. The shape of the liquid passage groove 211 can be oval, and its size is designed according to the diameter of the hose 43. The pressing plate 5 is provided with a guide column 713, and the upper end of the top rod 711 is provided with a positioning groove 714 matched with the elastic member 712. The elastic member 712 is sleeved on the guide column 713, and the elastic member 712 can be a spring. The elastic force of the spring can always keep the top rod 711 in abutment with the hose 43. The top rod 711 can be made of metal such as stainless steel, or can be made of plastic. The head of the top rod 711 can be designed in a circular or oval shape to better contact the hose 43.

[0045] With reference to Figures 4-5 One end of the pressing plate 5 is hinged to the fixed seat 2 through the hinge seat 9, and the other end is pressed by the pressing mechanism 6. The pressing mechanism 6 includes a handle 61, and the pressing plate 5 is provided with an open slot matched with the handle 61, the open slot is provided with a positioning pin 62, the handle 61 is provided with a clamping groove 63 matched with the positioning pin 62, and the handle 61 is rotationally connected in the fixed seat 2. When the clamping groove 63 on the handle 61 is clamped with the positioning pin 62, the pressing plate 5 is pressed on the fixed seat 2. When the handle 61 is rotated to a set angle, the pressing plate 5 can rotate around the hinge seat 9, which is convenient for replacing and maintaining the parts on the fixed seat 2. The pressing plate 5 can be made of ordinary plastic plate or transparent material such as acrylic plate, which is convenient for observing the internal situation.

[0046] With reference to Figure 5 The driving mechanism 31 is fixed on the fixed frame 3, and includes a servo motor 311 and a transmission mechanism 312. The transmission mechanism 312 is rotationally connected with the rotating column 21, and the transmission mechanism 312 adopts gear transmission. The gear transmission has the characteristics of high transmission efficiency and large torque. The servo motor 311 drives the driving wheel of the transmission mechanism 312, the driving wheel drives the driven wheel engaged with it, and then the rotating column 21 rotationally connected with the driven wheel rotates. The servo motor 311 has the characteristics of high precision and high response speed, and can accurately control the rotation angle of the rotating column 21. The rotating column 21 can be a cylindrical structure made of engineering plastic, and the surface is smooth to reduce the friction with the hose 43.

[0047] The implementation principle of the embodiment is that the liquid passage groove 211 of the rotating column 21 cooperates with the hose 43 and the occlusion assembly 71 to realize precise control of the on-off of the multi-path flow channel. Specifically, the driving mechanism 31 drives the rotating column 21 to rotate. When the liquid passage groove 211 of the rotating column 21 is aligned with the hose 43, the liquid can pass through the hose 43. When it is necessary to block the liquid, the rotating column 21 is rotated to a set angle, and the occlusion assembly 71 is pressed to the hose 43 under the action of the elastic member 712, so as to block the liquid. This combination can accurately control the on-off of the multi-path flow channel, avoid the electromagnetic interference problem of the traditional electromagnetic valve and the noise problem of the pneumatic valve, and is suitable for the field of medical instruments.

[0048] Embodiment two

[0049] With reference to Figures 6-7The difference between the embodiment and the embodiment one is that the compression plate 5 is provided with a plurality of observation holes 51 matched with the hose 43, which facilitates the operator to observe the on-off state of the hose 43 during the rotation of the rotating wheel; in addition, the compression plate 5 is detachably connected with a mounting rack 8, the sliding hole 7 is arranged in the mounting rack 8, the mounting rack 8 is provided with a support plate 715 at the top, the support plate 715 is provided with a guide column 713, and the elastic member 712 is arranged between the positioning groove 714 and the support plate 715; when it is needed to change the arrangement of the occlusion assembly 71, the support plate 715 can be directly replaced, and the support plate 715 can be made of plastic material; the arrangement of the mounting rack 8 facilitates the installation and maintenance of the occlusion assembly 71, and the occlusion assembly 71 can be connected with the mounting rack 8 through bolts or buckles or the like. The mounting rack 8 can be made of plastic material, or can be made of metal material such as aluminum alloy.

[0050] The implementation principle of the embodiment is that the observation hole 51 arranged on the compression plate 5 can facilitate the operator to directly observe the on-off state of the hose 43, so as to prevent medical accidents caused by device failure; the mounting rack 8 is detachably connected in the compression plate 5, the sliding hole 7 is arranged in the mounting rack 8, which facilitates the installation and maintenance of the occlusion assembly 71, and the support plate 715 and the compression plate 5 are detachably connected, so that the support plate 715 can be directly replaced to adapt to the occlusion requirement of different hoses 43.

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application.

Claims

1. A control for a multi-passage flow channel on-off structure, characterized by, The utility model provides a kind of multi-channel assembly, including substrate (1) and pressing plate (5), the substrate (1) is provided with fixed seat (2) on plate face, and the lower plate face is detachably connected with fixed frame (3);Multiple channel assembly (4) is provided on the fixed seat (2), and the multiple channel assembly (4) includes several hoses (43) for conveying different kinds of liquid;Rotary column (21) is rotatably connected in the fixed seat (2), and the outer wall of rotary column (21) is provided with several staggered arrangement liquid passage grooves (211) along length direction, and the liquid passage groove (211) is matched with hose (43);Rotary column (21) is rotated by drive mechanism (31) to provide power;The upper end of fixed seat (2) is fixed with pressing plate (5), and the pressing plate (5) is provided with sliding hole (7), and the sliding hole (7) is provided with occlusion component (71);The occlusion component (71) is located above liquid passage groove (211), and is used to apply extrusion force to hose (43), so that the pipeline of hose (43) can be in the state of blockage;Wherein, only when rotary column (21) is rotated to set angle, the liquid passage groove (211) can provide recovery deformation space for set hose (43), so that the pipeline of set hose (43) is in the state of flow.

2. The control of the on-off structure of the multi-channel flow channel according to claim 1, characterized in that, The multiple channel assembly (4) includes a main pipe (41), which is embedded in the fixed seat (2), and the main pipe (41) is uniformly provided with a plurality of branch pipe interfaces (42) for connecting the hoses (43).

3. The control of the on-off structure of the multi-channel flow channel according to claim 2, characterized in that, The branch pipe interfaces (42) are arranged obliquely on the main pipe (41).

4. The control of the multi-channel runner on-off structure according to claim 1, characterized in that, The occlusion component (71) includes a top rod (711) and an elastic member (712), and the top rod (711) is in abutment with the hose (43) under the action of the elastic force provided by the elastic member (712).

5. The control of the on-off structure of the multi-channel flow channel according to claim 4, characterized in that, The pressing plate (5) is detachably connected with a mounting frame (8), and the sliding hole (7) is arranged in the mounting frame (8).

6. The control of the on-off structure of the multi-channel flow channel according to claim 5, characterized in that, The mounting frame (8) is provided with a support plate (715) at the top, and the support plate (715) is provided with a guide column (713); the upper end of the top rod (711) is provided with a positioning groove (714) matched with the elastic member (712); the elastic member (712) is sleeved on the guide column (713) and is arranged between the positioning groove (714) and the support plate (715).

7. The control of the multi-channel runner on-off structure according to claim 1, characterized in that, The fixed frame (3) has a U-shaped structure; the drive mechanism (31) is fixed on the fixed frame (3) and includes a servo motor (311); the servo motor (311) drives the rotary column (21) to rotate through a transmission mechanism (312).

8. The control of the on-off structure of the multi-channel flow channel according to claim 7, characterized in that, The transmission mechanism (312) is provided with a protective cover (313) on the outside.

9. The control of the multi-channel runner on-off structure according to claim 1, characterized in that, One end of the pressing plate (5) is hinged to the fixed seat (2) through a hinge seat (9), and the other end is pressed by a pressing mechanism (6); the pressing mechanism (6) includes a handle (61), and the pressing plate (5) is provided with an open slot matched with the handle (61); the open slot is provided with a positioning pin (62); the handle (61) is provided with a clamping groove (63) matched with the positioning pin (62), and the handle (61) is rotatably connected in the fixed seat (2).

10. The control of the multi-channel runner on-off structure according to claim 1, characterized in that, The pressing plate (5) is provided with a plurality of observation holes (51) matched with the hose (43).

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