Automatic blood mixing and shaking device

Abstract

The invention discloses an automatic blood mixing and shaking device, and belongs to the technical field of blood mixing and shaking equipment, the automatic blood mixing and shaking device comprises a plurality of movable structures capable of horizontally reciprocating, an air cylinder assembly comprises a pneumatic cylinder main body and a control unit, and the end part of a piston rod in the pneumatic cylinder main body is connected with a mounting seat; a front end cover of the pneumatic cylinder main body is connected with a ring seat unit which is arranged on the peripheral surface of the piston rod in a sealing ring manner, and the ring seat unit is provided with a flexible outer cover unit which has elasticity and covers the piston rod. When the ring seat unit in the air cylinder assembly fails in sealing due to repeated friction of the piston rod of the pneumatic cylinder main body, gas in the pneumatic cylinder main body leaks into the flexible outer cover unit through the ring seat unit; in the process that the flexible outer cover unit is gradually and elastically expanded and drives the reset elastic piece to be converted into an extension state from an initial contraction state through the synchronous rod piece, the control unit can be triggered to send sealing failure fault information and position information of the ring seat unit with the sealing failure fault to the outside at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of blood mixing equipment, and more specifically, to an automatic blood mixing device. Background Art

[0002] In hospitals, disease control centers and other medical institutions, in order to obtain accurate blood analysis test results, human blood needs to be specifically processed. For some specific test items, such as routine blood tests and biochemical analysis, anticoagulants are usually added to the blood collection bag and mixed after the blood is collected into the bag to prevent the blood from clotting in the bag.

[0003] Nowadays, industrial control systems are widely used in the medical field, covering many aspects, including medical imaging, medical testing, etc. At present, there are some automatic blood mixing devices on the market, which use driving devices such as pneumatic cylinders to achieve automatic mixing and shaking of blood samples and anticoagulants, and can efficiently mix blood and anticoagulants evenly.

[0004] As the existing automatic blood mixing device is used for a long time, the seal in the front end cover of the pneumatic cylinder is easily worn due to the repeated friction of the piston rod, resulting in poor sealing effect at the front end cover and gas leakage. In addition, since the location where the gas leakage occurs is relatively hidden and difficult to directly observe, people cannot replace the worn seal in the pneumatic cylinder in time, resulting in continuous gas leakage when the mixing device mixes and shakes the blood sample and the anticoagulant. As a result, the automatic blood mixing device has a weak push or slow movement when mixing and shaking the blood sample and the anticoagulant through the pneumatic cylinder. This not only affects the efficiency of blood mixing, but also easily causes uneven mixing of the blood sample and the anticoagulant, affecting the reliability of subsequent blood analysis test results.

[0005] In view of this, we propose an automatic blood mixing device. Summary of the invention

[0006] Technical problem to be solved: The purpose of the present invention is to provide an automatic blood mixing device to solve the technical problems raised in the above-mentioned background technology.

[0007] Technical solution: The technical solution of the present invention provides an automatic blood mixing device, including a plurality of movable structures capable of horizontal reciprocating movement, each movable structure is connected to a cylinder assembly capable of driving the movable structure to perform horizontal reciprocating movement, the cylinder assembly includes a pneumatic cylinder body and a control unit, the end of a piston rod in the pneumatic cylinder body is connected to a mounting seat, a front end cover of the pneumatic cylinder body is connected to a ring seat unit with a sealing ring arranged on the outer peripheral surface of the piston rod, the ring seat unit is provided with a flexible outer cover unit with elasticity and arranged outside the piston rod, the flexible outer cover unit is sealed and connected between the ring seat unit and the mounting seat, and a pressure sensing unit arranged around the outer periphery of the ring seat unit and the flexible outer cover unit is also provided on the front end cover of the pneumatic cylinder body; The pressure sensing unit comprises an outer cover body, a synchronous rod is slidably inserted on the outer cover body, and one end of the synchronous rod extends into the inner part of the outer cover body, an elastic and retractable resilient member is connected between the synchronous rod and the outer cover body, and a touch spring sheet and a touch terminal electrically connected to the control unit are arranged inside the resilient member; When the seal of the ring seat unit fails, the gas inside the pneumatic cylinder body leaks through the ring seat unit into the flexible outer cover unit. The flexible outer cover unit gradually expands elastically and drives the reset spring from the initial contracted state to the extended state through the synchronization rod, so that the touch spring contacts the touch terminal and triggers the control unit to send the fault information of the seal failure and the position information of the ring seat unit where the seal failure occurs to the outside world at the same time.

[0008] As an optional solution of the technical solution of the present invention, the ring seat unit includes a plug rod airtight seat sealed and connected to the front end cover of the pneumatic cylinder body, a sealing ring is arranged in the plug rod airtight seat, and the sealing ring is tightly attached to the outer peripheral surface of the piston rod in the pneumatic cylinder body; A plurality of side grooves arranged in a circular array are evenly arranged on the side wall of the inner cavity of the pneumatic cylinder body, and the side grooves are located on the side of the sealing ring away from the front end cover of the pneumatic cylinder body; A deviation-correcting slide seat is sealed and slidably disposed in each side groove, a first spring is connected to the end of the deviation-correcting slide seat, and an end of the first spring away from the deviation-correcting slide seat is connected to the end of the side groove; An annular air inlet passage is also provided inside the plug rod airtight seat, and all the side grooves are connected to the annular air inlet passage.

[0009] As an optional solution of the technical solution of the document of the present invention, the flexible outer cover unit includes a base cover member and a first cover shell, and a specific elastic elastic enclosure is connected between the base cover member and the first cover shell; The base cover, the first cover shell and the elastic enclosure are all covered on the outside of the piston rod in the pneumatic cylinder body, and the first cover shell is sealed and connected to the mounting seat.

[0010] As an optional solution of the technical solution of the document of the present invention, the base cover member includes a second cover shell, and a gas collecting cover shell is fixedly connected to the side wall of the second cover shell; A one-way exhaust valve is connected to the side wall of the gas collecting cover; The end of the gas collecting cover is fixedly connected with a flow distribution pipeline; The side wall of the plug rod airtight seat is connected with an air nozzle which is connected with the annular air inlet passage, and a one-way air inlet valve is arranged on the air nozzle; One end of the flow distribution pipeline away from the gas collecting housing is connected to the gas nozzle; The elastic enclosure is connected between the first cover shell and the second cover shell, and one end of the second cover shell away from the elastic enclosure is sealed and connected to the end of the plug rod airtight seat.

[0011] As an optional solution of the technical solution of the present invention, the synchronization rod comprises an L-shaped traction frame, a flexible cover body, and a single lock member capable of limiting the movement of the L-shaped traction frame in a single direction when the L-shaped traction frame is pushed by the elastically expanded flexible outer cover unit; The L-shaped traction frame includes an insertion section and a connecting section; The inserting section of the L-shaped traction frame is slidably inserted on the side wall of the outer cover; One end of the insertion section extends into the inner cavity of the outer cover and is connected to the flexible cover, and the other end extends from the side wall of the outer cover and is connected to the connecting section. The edge of the flexible cover is connected to the inner cavity side wall of the outer cover.

[0012] As an optional solution of the technical solution of the document of the present invention, the single lock comprises a brake chuck, an adjustable slide column and a fixing frame, and a chamfered portion is provided on the end of the brake chuck; An adjusting screw is threadedly inserted on the fixing frame; The adjustable sliding column and the brake clamp are arranged with an upper and lower interval, and a second spring is connected between the adjustable sliding column and the brake clamp; The bottom end of the adjusting screw is rotatably connected to an end of the adjustable slide column away from the brake chuck; A straight groove is provided on the outer cover body at a position corresponding to the sliding insertion position of the insertion section, and the brake clamp and the adjustable slide column slide in the straight groove, and the fixing frame is connected to the side wall of the outer cover body; The chamfered portion in the brake chuck faces one side of the inner cavity of the outer cover; A plurality of limiting tooth grooves matched with the chamfered portion are evenly arranged on one side of the insertion section facing the brake chuck, the cross section of the limiting tooth groove is a right triangle, and the chamfered portion is movably buckled into the inside of the limiting tooth groove.

[0013] As an optional solution of the technical solution of the document of the present invention, the reset spring comprises an insulating cylindrical shell, an insulating retracting rod is slidably inserted at the end of the insulating cylindrical shell, and an end of the insulating cylindrical shell away from the insulating retracting rod is connected to the side wall of the outer cover; One end of the insulating retracting rod extends into the inner cavity of the insulating cylindrical shell and is connected to a third spring, and the other end extends from the end of the insulating cylindrical shell and is connected to a connecting seat, and the connecting seat is connected to the side wall of the inserting section in the L-shaped traction frame; One end of the third spring away from the insulating retracting rod is connected to the end of the inner cavity of the insulating cylinder shell; The touch spring and the touch terminal are both located in the inner cavity of the insulating cylindrical shell, and the touch spring and the touch terminal are arranged opposite to each other; The touch terminal is connected to the side wall of the inner cavity of the insulating cylindrical shell, and the outer surface of the touch terminal is flush with the side wall of the inner cavity of the insulating cylindrical shell; The touch terminal is connected to the side wall of the insulating retracted rod.

[0014] As an optional solution of the technical solution of the present invention, the control unit includes a sub-controller connected to the front end cover of the pneumatic cylinder body, a signal transmitter is installed inside the sub-controller, and the pneumatic cylinder body is electrically connected to the sub-controller; The touch spring and the touch terminal are both electrically connected to the signal transmitter, and when the touch spring contacts the touch terminal, the signal transmitter is triggered to simultaneously send seal failure fault information and position information of the ring seat unit where the seal failure occurs to the outside.

[0015] As an optional solution of the technical solution of the present invention, the air supply port of the front end cover of the pneumatic cylinder body is also provided with an air port structure that cooperates with the L-shaped traction frame; The air port structure includes an external air cover connected to the air supply port of the front end cover of the pneumatic cylinder body; The side wall of the external air hood is fixedly connected with an air bleed hose; An opening adjustment needle is inserted into the end of the external air cover in a sealing and sliding manner; A ring-shaped air blocking portion is provided on the side wall of the inner cavity of the external air cover; One end of the connecting section in the L-shaped traction frame away from the inserting section is connected to the end of the opening adjustment needle; When the opening adjustment needle is in the initial state, the sharp thorn portion in the opening adjustment needle passes through the annular air blocking portion; The connection position of the air bleed hose and the side wall of the external air cover is located on the side of the annular air blocking portion away from the front end cover of the pneumatic cylinder body.

[0016] As an optional solution of the technical solution of the present invention, the movable structure includes a mixing and shaking platform, and a plurality of rollers are evenly connected to the bottom of the mixing and shaking platform; A shelf is connected to the top of the mixing platform; The mounting seat connected to the end of the piston rod in the pneumatic cylinder body is connected to the mixing and shaking platform.

[0017] Beneficial effects: One or more technical solutions provided in the technical solution of the present invention have at least the following technical effects or advantages: 1. The blood collection bags to be mixed are placed on several movable structures respectively, and the movable structures are driven to move back and forth horizontally by the cylinder assemblies connected to each movable structure, so that the present invention can shake a large number of blood collection bags at the same time, so that the blood and anticoagulant in the bags are mixed evenly, thereby improving the mixing efficiency of the blood to be tested. In the above process, when the ring seat unit in the cylinder assembly fails to seal due to repeated friction of the piston rod of the pneumatic cylinder body, the gas inside the pneumatic cylinder body will pass through the ring seat The unit leaks into the flexible outer cover unit. In the process that the flexible outer cover unit gradually expands elastically and drives the reset spring from the initial contraction state to the extension state through the synchronization rod, the touch spring contacts the touch terminal and triggers the control unit to simultaneously send the fault information of the sealing failure and the position information of the ring seat unit where the sealing failure occurs to the outside world. When the sealing failure of the cylinder assembly occurs during operation and causes gas leakage, it can be discovered in the first time and the worn seal can be replaced in time, which ensures the blood mixing efficiency and is also conducive to ensuring the reliability of the blood analysis test results.

[0018] 2. The sealing of the ring seat unit fails, causing the gas inside the pneumatic cylinder body to continuously leak into the flexible outer cover unit through the ring seat unit and causing the flexible outer cover unit to elastically expand. During this process, the leaked gas is first continuously injected into the side grooves in the ring seat unit through the diversion pipeline in the base cover. As the gas inside the side groove continues to increase, the correction slide is driven to continuously extend from the side groove. Subsequently, the piston rod that is reciprocating in the pneumatic cylinder body is corrected and guided by a plurality of correction slides that extend out and are arranged in a circular array, so as to avoid the piston rod in the pneumatic cylinder body from shaking or becoming unstable when moving after the sealing ring in the ring seat unit is worn by the reciprocating piston rod in the pneumatic cylinder body. In addition, the extended correction slide can also effectively slow down the speed of gas leakage, which helps to maintain the stability of the air pressure in the cylinder assembly. Therefore, when the cylinder assembly leaks, it can effectively improve the movement stability of the cylinder assembly, thereby improving the stability of blood mixing.

[0019] 3. After the leaked gas is continuously injected into the flexible outer cover unit and it gradually expands elastically and continuously drives the reset spring to extend through the synchronization rod, under the pushing action of the elastically expanded flexible outer cover unit, the synchronization rod will also drive the opening adjustment needle in the air port structure to move, so that the spike portion in the opening adjustment needle gradually moves toward the direction of the annular air blocking portion, so that the distance between the annular air blocking portion and the spike portion of the opening adjustment needle continues to increase, so that the opening of the air port structure increases, and the gas flow entering the cylinder assembly is increased, which helps to compensate for the air pressure drop caused by leakage of the cylinder assembly, further maintain the air pressure inside the cylinder assembly stable, and enhance the anti-interference ability of the cylinder assembly in the event of gas leakage, so that the cylinder assembly can continue to operate without stopping when gas leakage occurs, and the sealing ring in the ring seat unit can be replaced in time after the blood mixing work is completed, thereby ensuring the mixing efficiency of the blood.

[0020] 4. When the flexible outer cover unit continuously reciprocates and retracts under the drive of the piston rod of the pneumatic cylinder body, the internal air pressure of the flexible outer cover unit continues to increase under the squeezing action of the retracted piston rod and exceeds the preset pressure of the one-way exhaust valve in the base cover. The pressure is released through the one-way exhaust valve to ensure that the internal air pressure of the flexible outer cover unit is maintained within an appropriate range, thereby preventing the elastic enclosure in the flexible outer cover unit from being burst.

[0021] 5. When the flexible outer cover unit expands elastically and drives the synchronous rod to slide, the brake chuck in the single lock is continuously snapped into different limit grooves, and under the limiting action of the limit grooves on the inserted section of the synchronous rod, the synchronous rod can only move in a single direction when the ring seat unit fails to seal, so as to prevent the piston rod in the pneumatic cylinder body from pulling the elastic enclosure in the flexible outer cover unit when it is extended. When the elastic enclosure is no longer pressed tightly against the end of the inserted section of the synchronous rod, the synchronous rod runs back under the elastic pulling force of the reset spring, thereby ensuring the stability of the opening of the air port structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of part A.

[0024] Figure 3 It is a cross-sectional view of the outer cover body in the present invention.

[0025] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of part B.

[0026] Figure 5 It is a cross-sectional view of the port component in the present invention.

[0027] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of part C in the middle.

[0028] Figure 7 For the present invention Figure 5 A partial enlarged schematic diagram of part D in the middle.

[0029] Figure 8 For the present invention Figure 5 A partial enlarged schematic diagram of part E in the middle.

[0030] Fig. 9 It is a schematic structural diagram of the flexible outer cover unit in the present invention.

[0031] Fig.10 For the present invention Fig. 9 A partial enlarged schematic diagram of part F in the middle.

[0032] Fig.11 It is a cross-sectional view of the plug rod airtight seat in the present invention.

[0033] Description of the numbers in the figure: 20. Mixing platform; 30. Shelves; 401. Pneumatic cylinder body; 402. Outer cover; 403. Sub-controller; 404. Adjustable slide column; 405. Adjusting screw; 406. Insulating cylinder shell; 407. External air cover; 408. Air bleed hose; 409. Opening adjustment needle; 410. L-shaped traction frame; 411. Brake chuck; 412. Flexible cover; 413. First cover shell; 414. Second cover shell; 415. Elastic enclosure; 416. Correction slide seat; 417. Annular air inlet channel; 418. Plug rod airtight seat; 419. Insulating retracting rod; 420. Touch spring; 421. Touch terminal; 422. Annular air blocking part; 423. Gas gathering cover shell; 424. One-way exhaust valve; 425. Diverter pipeline. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not 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.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Reference Figure 1 , Figure 2 , Figure 5 and Figure 7 The embodiment of the present invention provides an automatic blood mixing device, comprising a plurality of movable structures capable of horizontal reciprocating movement, each movable structure being connected to a cylinder assembly capable of driving the movable structure to perform horizontal reciprocating movement, the cylinder assembly comprising a pneumatic cylinder body 401 and a control unit, the end of a piston rod in the pneumatic cylinder body 401 being connected to a mounting seat, a front end cover of the pneumatic cylinder body 401 being connected to a ring seat unit with a sealing ring disposed on the outer circumference of the piston rod, a flexible outer cover unit having elasticity and disposed on the outside of the piston rod being disposed on the ring seat unit, the flexible outer cover unit being sealed and connected between the ring seat unit and the mounting seat, and a pressure sensing unit disposed around the outer circumference of the ring seat unit and the flexible outer cover unit being disposed on the front end cover of the pneumatic cylinder body 401; The pressure sensing unit includes an outer housing 402, on which a synchronization rod is slidably inserted, and one end of the synchronization rod extends into the outer housing 402, and an elastic and retractable reset spring is connected between the synchronization rod and the outer housing 402, and a touch spring 420 and a touch terminal 421 electrically connected to the control unit are arranged inside the reset spring; When the seal of the ring seat unit fails, the gas inside the pneumatic cylinder body 401 leaks through the ring seat unit into the flexible outer cover unit. The flexible outer cover unit gradually expands elastically and drives the reset spring from the initial contracted state to the extended state through the synchronization rod, so that the touch spring 420 contacts the touch terminal 421 and triggers the control unit to send the fault information of the sealing failure and the position information of the ring seat unit where the sealing failure occurs to the outside world at the same time.

[0037] Reference Figure 1 , an embodiment of the present invention provides an automatic blood mixing device, the movable structure includes a mixing platform 20, and a plurality of rollers are evenly connected to the bottom of the mixing platform 20; A shelf 30 is connected to the top of the mixing platform 20; The mounting seat connected to the end of the piston rod in the pneumatic cylinder body 401 is connected to the mixing platform 20 .

[0038] The blood collection bags to be mixed are placed on several movable structures respectively, and the cylinder assembly connected to each movable structure drives the movable structure to move back and forth horizontally, so that the present invention can shake a large number of blood collection bags at the same time, so that the blood in the bag is evenly mixed with the anticoagulant, and the mixing efficiency of the blood to be tested is improved. In the above process, when the ring seat unit in the cylinder assembly fails to seal due to repeated friction of the piston rod of the pneumatic cylinder body 401, the internal gas of the pneumatic cylinder body 401 will leak into the flexible outer cover unit through the ring seat unit. In the process that the flexible outer cover unit gradually expands elastically and drives the reset spring member from the initial contraction state to the extension state through the synchronization rod, the touch spring piece 420 contacts the touch terminal 421, and triggers the control unit to send the fault information of the sealing failure and the position information of the ring seat unit where the sealing failure occurs to the outside world at the same time, so that when the cylinder assembly fails to seal and causes gas leakage during operation, it can be discovered in the first time and the worn seal can be replaced in time, which ensures the blood mixing efficiency while also helping to ensure the reliability of the blood analysis test results.

[0039] Reference Figure 1 , Figure 2 , Figure 5 , Figure 6 as well as Figures 9 to 11 The embodiment of the present invention provides an automatic blood mixing device, wherein the ring seat unit comprises a plug rod airtight seat 418 which is sealed and connected to the front end cover of the pneumatic cylinder body 401, and a sealing ring is arranged in the plug rod airtight seat 418, and the sealing ring is tightly attached to the outer peripheral surface of the piston rod in the pneumatic cylinder body 401; A plurality of side grooves arranged in a circular array are evenly arranged on the inner cavity side wall of the pneumatic cylinder body 401, and the side grooves are located on the side of the sealing ring away from the front end cover of the pneumatic cylinder body 401; A deviation-correcting slide 416 is sealed and slidably disposed in each side groove, and a first spring is connected to the end of the deviation-correcting slide 416 , and one end of the first spring away from the deviation-correcting slide 416 is connected to the end of the side groove; An annular air inlet passage 417 is also provided inside the plug rod airtight seat 418 , and all the side grooves are connected to the annular air inlet passage 417 .

[0040] Reference Figure 2 and Figure 3The embodiment of the present invention provides an automatic blood mixing device, wherein the flexible outer cover unit includes a base cover and a first cover shell 413, wherein a specific elastic elastic enclosure 415 is connected between the base cover and the first cover shell 413, and the elastic enclosure 415 is made of an elastic rubber material; The base cover, the first cover shell 413 and the elastic enclosure 415 are all covered on the outside of the piston rod in the pneumatic cylinder body 401, and the first cover shell 413 is sealed and connected to the mounting seat.

[0041] Reference Figure 5 , Figure 6 , Fig. 9 and Fig.10 The embodiment of the present invention provides an automatic blood mixing device, wherein the base cover comprises a second cover shell 414, and a gas collecting cover shell 423 is fixedly connected to the side wall of the second cover shell 414; A one-way exhaust valve 424 is connected to the side wall of the gas collecting housing 423; The end of the gas collecting housing 423 is fixedly connected with a flow dividing pipeline 425; The side wall of the plug rod airtight seat 418 is connected with an air nozzle which is in communication with the annular air inlet passage 417, and a one-way air inlet valve is arranged on the air nozzle; One end of the flow dividing pipe 425 away from the gas collecting housing 423 is connected to the gas nozzle; The elastic enclosure 415 is connected between the first cover shell 413 and the second cover shell 414 , and one end of the second cover shell 414 away from the elastic enclosure 415 is sealed and connected to the end of the plug rod airtight seat 418 .

[0042] The ring seat unit fails to seal, causing the internal gas of the pneumatic cylinder body 401 to continuously leak into the flexible outer cover unit through the ring seat unit and causing the flexible outer cover unit to elastically expand. During this process, the leaked gas is first continuously injected into the various side grooves in the ring seat unit through the bypass pipe 425 in the base cover. As the gas in the side groove continues to increase, the correction slide 416 is driven to continuously extend from the side groove. Subsequently, the piston rod that is reciprocating in the pneumatic cylinder body 401 is corrected and guided by multiple correction slides 416 that extend out and are arranged in a circular array, so as to avoid the piston rod in the pneumatic cylinder body 401 from shaking or becoming unstable when moving after the sealing ring in the ring seat unit is worn by the reciprocating piston rod in the pneumatic cylinder body 401. In addition, the extended correction slide 416 can also effectively slow down the speed of gas leakage, which helps to maintain the stability of the air pressure in the cylinder assembly. Therefore, when the cylinder assembly leaks, it can effectively improve the movement stability of the cylinder assembly, thereby improving the stability of blood mixing.

[0043] When gas is continuously injected into the annular air inlet channel 417 in the ring seat unit through the bypass pipe 425, the direction of the air flow is controlled by the one-way air inlet valve on the air nozzle to prevent the gas from flowing back after being injected into the annular air inlet channel 417, thereby affecting the stability of the air pressure inside the side groove.

[0044] When the flexible outer cover unit continuously reciprocates and retracts under the drive of the piston rod of the pneumatic cylinder body 401, the internal air pressure of the flexible outer cover unit continuously increases under the squeezing action of the retracted piston rod and exceeds the preset pressure of the one-way exhaust valve 424 in the base cover part, and the pressure is released through the one-way exhaust valve 424 to ensure that the internal air pressure of the flexible outer cover unit is maintained within a moderate range, thereby preventing the elastic enclosure 415 in the flexible outer cover unit from being burst.

[0045] Reference Figures 1 to 5 The embodiment of the present invention provides an automatic blood mixing device, wherein the synchronous rod comprises an L-shaped traction frame 410, a flexible cover body 412, and a single lock member capable of limiting the L-shaped traction frame 410 from moving in a single direction when the L-shaped traction frame 410 is pushed by an elastically expanded flexible outer cover unit, wherein the flexible cover body 412 is made of a flexible material; The L-shaped traction frame 410 includes an insertion section and a connection section; The insertion section of the L-shaped traction frame 410 is slidably inserted on the side wall of the outer cover 402; One end of the insertion section extends into the inner cavity of the outer cover body 402 and is connected to the flexible cover body 412 , and the other end extends from the side wall of the outer cover body 402 and is connected to the connecting section. The edge of the flexible cover body 412 is connected to the inner cavity side wall of the outer cover body 402 .

[0046] Reference Figures 1 to 4 , an embodiment of the present invention provides an automatic blood mixing device, wherein a single locking member comprises a brake chuck 411, an adjustable slide column 404 and a fixing frame, and a chamfered portion is provided on the end of the brake chuck 411; An adjusting screw 405 is threadedly inserted on the fixing frame; The adjustable slide post 404 and the brake clamp head 411 are arranged with an upper and lower interval, and a second spring is connected between the adjustable slide post 404 and the brake clamp head 411; The bottom end of the adjusting screw rod 405 is rotatably connected to an end of the adjustable slide post 404 away from the brake chuck 411; A straight groove is provided on the outer cover 402 at a position corresponding to the sliding insertion position of the insertion section, and the brake chuck 411 and the adjustable slide post 404 slide in the straight groove, and the fixing frame is connected to the side wall of the outer cover 402; The chamfered portion of the brake chuck 411 faces the inner cavity of the outer housing 402; A plurality of limiting tooth grooves matching the chamfered portion are evenly arranged on one side of the insertion section facing the brake clamp head 411 . The cross section of the limiting tooth groove is a right triangle, and the chamfered portion is movably buckled into the inside of the limiting tooth groove.

[0047] Reference Figure 3 , Figure 5 and Figure 7 The embodiment of the present invention provides an automatic blood mixing device, wherein the resetting spring comprises an insulating cylindrical shell 406, an insulating retracting rod 419 is slidably inserted at the end of the insulating cylindrical shell 406, and an end of the insulating cylindrical shell 406 away from the insulating retracting rod 419 is connected to the side wall of the outer cover 402; One end of the insulating retracting rod 419 extends into the inner cavity of the insulating cylindrical shell 406 and is connected to a third spring, and the other end extends from the end of the insulating cylindrical shell 406 and is connected to a connecting seat, and the connecting seat is connected to the side wall of the inserting section in the L-shaped traction frame 410; One end of the third spring away from the insulating retracting rod 419 is connected to the inner end of the insulating cylindrical shell 406; The touch spring 420 and the touch terminal 421 are both located in the inner cavity of the insulating cylindrical shell 406, and the touch spring 420 and the touch terminal 421 are arranged opposite to each other; The touch terminal 421 is connected to the inner side wall of the insulating cylindrical shell 406 , and the outer surface of the touch terminal 421 is flush with the inner side wall of the insulating cylindrical shell 406 ; The touch terminal 421 is connected to the side wall of the insulating retracted rod 419 .

[0048] Reference Figure 1 and Figure 2 , an embodiment of the present invention provides an automatic blood mixing device, the control unit includes a sub-controller 403 connected to the front end cover of the pneumatic cylinder body 401, a signal transmitter is installed inside the sub-controller 403, and the pneumatic cylinder body 401 is electrically connected to the sub-controller 403; The touch spring 420 and the touch terminal 421 are both electrically connected to the signal transmitter, and when the touch spring 420 contacts the touch terminal 421, the signal transmitter is triggered to simultaneously send the seal failure fault information and the position information of the ring seat unit where the seal failure fault occurs to the outside.

[0049] The elastic enclosure 415 in the flexible outer cover unit undergoes elastic expansion, and drives the synchronous rod member slidably inserted on the side wall of the outer cover body 402 to slide, and the sliding synchronous rod member then drives the insulating retracting rod 419 in the reset spring member to extend from the end of the insulating cylinder shell 406, so that the reset spring member gradually changes from the initial contracted state to the extended state, so that the touch spring 420 contacts the touch terminal 421, and triggers the signal transmitter in the control unit to open, and then the opened signal transmitter simultaneously sends the fault information of the sealing failure and the position information of the ring seat unit where the sealing failure occurs to the external main controller. In the present invention, all sub-controllers 403 are electrically connected to the external main controller, and the operator can send a control signal to each sub-controller 403 through the external main controller. After receiving the control signal, the sub-controller 403 in the cylinder assembly sends it to the corresponding pneumatic cylinder body 401, so that the operator can control each cylinder assembly through the external main controller. It should be noted that in this article, the external main controller that appears is a common prior art that plays a control role, such as a computer.

[0050] Reference Figure 5 and Figure 8 The embodiment of the present invention provides an automatic blood mixing device, wherein the air supply port of the front end cover of the pneumatic cylinder body 401 is also provided with an air port structure that cooperates with the L-shaped traction frame 410; The air port structure includes an external air cover 407 connected to the air supply port of the front end cover of the pneumatic cylinder body 401; The side wall of the external air cover 407 is fixedly connected with an air bleed hose 408; An opening adjustment needle 409 is inserted into the end of the external air cover 407 in a sealing and sliding manner; A ring-shaped air blocking portion 422 is provided on the inner cavity side wall of the external air cover 407; One end of the connecting section of the L-shaped traction frame 410 away from the insertion section is connected to the end of the opening adjustment needle 409; When the opening adjustment needle 409 is in the initial state, the spike portion of the opening adjustment needle 409 passes through the annular air blocking portion 422; The connection position between the air bleed hose 408 and the side wall of the external air cover 407 is located on the side of the annular air blocking portion 422 away from the front end cover of the pneumatic cylinder body 401.

[0051] After the leaked gas is continuously injected into the flexible outer cover unit and it gradually expands elastically and continuously drives the reset spring to extend through the synchronization rod, under the pushing action of the elastically expanded flexible outer cover unit, the synchronization rod will also drive the opening adjustment needle 409 in the air port structure to move, so that the spike portion in the opening adjustment needle 409 gradually moves toward the direction of the annular air blocking portion 422, so that the distance between the annular air blocking portion 422 and the spike portion of the opening adjustment needle 409 is continuously increased, so that the opening of the air port structure is increased, and the gas flow entering the cylinder assembly is increased, which helps to compensate for the air pressure drop caused by the leakage of the cylinder assembly, further maintain the air pressure stability inside the cylinder assembly, and enhance the anti-interference ability of the cylinder assembly in the event of gas leakage, so that the cylinder assembly can continue to operate without stopping when gas leakage occurs, and the sealing ring in the ring seat unit can be replaced in time after the blood mixing work is completed, thereby ensuring the mixing efficiency of the blood.

[0052] When the flexible outer cover unit elastically expands and drives the synchronous rod to slide, the brake clamp head 411 in the single lock is continuously snapped into different limit grooves, and under the limiting action of the limit grooves on the inserted section in the synchronous rod, the synchronous rod can only move in a single direction when the ring seat unit fails to seal, thereby preventing the piston rod in the pneumatic cylinder body 401 from pulling the elastic enclosure 415 in the flexible outer cover unit when it is extended. When the elastic enclosure 415 is no longer tightly pressed against the end of the inserted section in the synchronous rod, the synchronous rod runs back under the elastic pulling force of the reset spring, thereby ensuring the stability of the opening of the air port structure.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic blood mixing device, characterized in that: The invention comprises a plurality of movable structures capable of horizontal reciprocating movement, each of the movable structures being connected to a cylinder assembly capable of driving the movable structure to perform horizontal reciprocating movement, the cylinder assembly comprising a pneumatic cylinder body (401) and a control unit, the end of a piston rod in the pneumatic cylinder body (401) being connected to a mounting seat, a front end cover of the pneumatic cylinder body (401) being connected to a ring seat unit having a sealing ring arranged on the outer peripheral surface of the piston rod, the ring seat unit being provided with a flexible outer cover unit having elasticity and arranged on the outside of the piston rod, the flexible outer cover unit being sealedly connected between the ring seat unit and the mounting seat, and a pressure sensing unit being arranged around the outer periphery of the ring seat unit and the flexible outer cover unit on the front end cover of the pneumatic cylinder body (401); The pressure sensing unit comprises an outer cover body (402), a synchronization rod is slidably inserted on the outer cover body (402), and one end of the synchronization rod extends into the outer cover body (402), a resilient and retractable resilient member is connected between the synchronization rod and the outer cover body (402), and a touch spring (420) and a touch terminal (421) electrically connected to the control unit are arranged inside the resilient member; When the seal of the ring seat unit fails, the gas inside the pneumatic cylinder body (401) leaks through the ring seat unit into the flexible outer cover unit. The flexible outer cover unit gradually elastically expands and drives the reset spring member from an initial contracted state to an extended state through the synchronous rod, so that the touch spring (420) contacts the touch terminal (421) and triggers the control unit to simultaneously send seal failure fault information and position information of the ring seat unit where the seal failure occurs to the outside world.

2. The automatic blood mixing device according to claim 1, characterized in that: The ring seat unit comprises a plug rod airtight seat (418) which is sealed and connected to the front end cover of the pneumatic cylinder body (401); a sealing ring is arranged inside the plug rod airtight seat (418), and the sealing ring is tightly attached to the outer peripheral surface of the piston rod in the pneumatic cylinder body (401); A plurality of side grooves arranged in a circular array are evenly arranged on the inner cavity side wall of the pneumatic cylinder body (401), and the side grooves are located on a side of the sealing ring away from the front end cover of the pneumatic cylinder body (401); A deviation-correcting slide seat (416) is sealed and slidably disposed in each of the side grooves, an end of the deviation-correcting slide seat (416) is connected to a first spring, and an end of the first spring away from the deviation-correcting slide seat (416) is connected to the end of the side groove; An annular air inlet passage (417) is also provided inside the plug rod airtight seat (418), and all the side grooves are connected to the annular air inlet passage (417).

3. The automatic blood mixing device according to claim 2, characterized in that: The flexible outer cover unit comprises a base cover member and a first cover shell (413), wherein a specifically elastic elastic enclosure (415) is connected between the base cover member and the first cover shell (413); The base cover, the first cover shell (413) and the elastic enclosure (415) are all arranged to cover the outside of the piston rod in the pneumatic cylinder body (401), and the first cover shell (413) is sealed and connected to the mounting seat.

4. The automatic blood mixing device according to claim 3, characterized in that: The base cover member comprises a second cover shell (414), and a gas collecting cover shell (423) is fixedly connected to a side wall of the second cover shell (414); A one-way exhaust valve (424) is connected to the side wall of the gas collecting housing (423); The end of the gas collecting housing (423) is fixedly connected to a flow distribution pipeline (425); A gas nozzle connected to the annular air inlet passage (417) is connected to the side wall of the plug rod airtight seat (418), and a one-way air inlet valve is provided on the gas nozzle; One end of the flow distribution pipeline (425) away from the gas collecting housing (423) is connected to the gas nozzle; The elastic enclosure (415) is connected between the first cover shell (413) and the second cover shell (414), and one end of the second cover shell (414) away from the elastic enclosure (415) is sealed and connected to the end of the plug rod airtight seat (418).

5. The automatic blood mixing device according to claim 1, characterized in that: The synchronous rod comprises an L-shaped traction frame (410), a flexible cover body (412), and a single lock member capable of limiting the L-shaped traction frame (410) from moving in a single direction when the L-shaped traction frame (410) is pushed by an elastically expanded flexible outer cover unit; The L-shaped traction frame (410) comprises an insertion section and a connection section; The insertion section of the L-shaped traction frame (410) is slidably inserted on the side wall of the outer cover (402); One end of the insertion section extends into the inner cavity of the outer cover body (402) and is connected to the flexible cover body (412), and the other end extends from the side wall of the outer cover body (402) and is connected to the connecting section, and the edge of the flexible cover body (412) is connected to the inner cavity side wall of the outer cover body (402).

6. The automatic blood mixing device according to claim 5, characterized in that: The single locking component comprises a brake clamp (411), an adjustable sliding column (404) and a fixing frame, and a chamfered portion is provided on the end of the brake clamp (411); An adjusting screw (405) is threadedly inserted into the fixing frame; The adjustable sliding column (404) and the brake clamp (411) are arranged with an interval up and down, and a second spring is connected between the adjustable sliding column (404) and the brake clamp (411); The bottom end of the adjusting screw rod (405) is rotatably connected to an end of the adjustable sliding column (404) away from the brake clamp (411); A straight groove is provided on the outer cover (402) at a position corresponding to the sliding insertion position of the insertion section, and the brake clamp (411) and the adjustable sliding column (404) both slide in the straight groove, and the fixing frame is connected to the side wall of the outer cover (402); The chamfered portion of the brake chuck (411) faces one side of the inner cavity of the outer cover (402); A plurality of position-limiting tooth grooves matching the chamfered portion are evenly arranged on one side of the insertion section facing the brake chuck (411); the cross section of the position-limiting tooth groove is a right-angled triangle, and the chamfered portion is movably buckled into the interior of the position-limiting tooth groove.

7. The automatic blood mixing device according to claim 5, characterized in that: The resetting spring comprises an insulating cylindrical shell (406), an insulating retracting rod (419) is slidably inserted into the end of the insulating cylindrical shell (406), and an end of the insulating cylindrical shell (406) away from the insulating retracting rod (419) is connected to the side wall of the outer cover (402); One end of the insulating retracting rod (419) extends into the inner cavity of the insulating cylindrical shell (406) and is connected to a third spring, and the other end extends from the end of the insulating cylindrical shell (406) and is connected to a connecting seat, and the connecting seat is connected to the side wall of the inserting section in the L-shaped traction frame (410); One end of the third spring away from the insulating retracting rod (419) is connected to the end of the inner cavity of the insulating cylindrical shell (406); The touch spring (420) and the touch terminal (421) are both located in the inner cavity of the insulating cylindrical shell (406), and the touch spring (420) and the touch terminal (421) are arranged opposite to each other; The touch terminal (421) is connected to the inner cavity side wall of the insulating cylindrical shell (406), and the outer surface of the touch terminal (421) is flush with the inner cavity side wall of the insulating cylindrical shell (406); The touch terminal (421) is connected to the side wall of the insulating retracted rod (419).

8. The automatic blood mixing device according to claim 7, characterized in that: The control unit comprises a sub-controller (403) connected to the front end cover of the pneumatic cylinder body (401), a signal transmitter is installed inside the sub-controller (403), and the pneumatic cylinder body (401) is electrically connected to the sub-controller (403); The touch spring (420) and the touch terminal (421) are both electrically connected to the signal transmitter, and when the touch spring (420) and the touch terminal (421) are in contact, the signal transmitter is triggered to simultaneously send sealing failure fault information and position information of the ring seat unit where the sealing failure fault occurs to the outside world.

9. The automatic blood mixing device according to claim 5, characterized in that: The air supply port of the front end cover of the pneumatic cylinder body (401) is also provided with an air port structure that cooperates with the L-shaped traction frame (410); The air port structure comprises an external air cover (407) connected to the air supply port of the front end cover of the pneumatic cylinder body (401); The side wall of the external air hood (407) is fixedly connected to an air bleed hose (408); An opening adjustment needle (409) is inserted into the end of the external air cover (407) in a sealing and slidable manner; An annular gas blocking portion (422) is provided on the inner cavity side wall of the external gas cover (407); An end of the connection section in the L-shaped traction frame (410) that is away from the insertion section is connected to the end of the opening adjustment needle (409); When the opening adjustment needle (409) is in the initial state, the spike portion in the opening adjustment needle (409) passes through the annular air blocking portion (422); The connection position between the air bleed hose (408) and the side wall of the external air cover (407) is located on the side of the annular air blocking portion (422) away from the front end cover of the pneumatic cylinder body (401).

10. The automatic blood mixing device according to claim 1, characterized in that: The movable structure comprises a mixing and shaking platform (20), and a plurality of rollers are evenly connected to the bottom of the mixing and shaking platform (20); The top of the mixing and shaking platform (20) is connected to a shelf (30); The mounting seat connected to the end of the piston rod in the pneumatic cylinder body (401) is connected to the mixing and rocking platform (20).

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