Fluid mixing device

Abstract

The utility model provides a fluid mixing device which comprises a mixing assembly, and the mixing assembly comprises a mixing connector and an injector communicated through the mixing connector. The fluid mixing device comprises a supporting piece and an alternate driving mechanism; the mixing assembly is mounted on the supporting piece; and the alternate driving mechanism is used for driving the plunger rods of all the injectors to alternately move towards the direction close to the mixing joint, so that medicaments automatically and circularly flow among all the injectors to be mixed, and the problem that time and labor are wasted in traditional manual operation is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mixing instruments, and in particular relates to a fluid mixing device. Background Art

[0002] In fields such as chemistry and medicine, there's often a need to mix multiple fluids (fluids are flowable media such as liquids or gases). Traditionally, fluid mixing operations have involved pouring each fluid into a blender for mixing or using a syringe to extract fluids from each container and then manually shaking them. However, during the process of transferring fluids into or out of the blender, not only are they susceptible to contamination, but some fluids can also remain in the blender, causing fluid waste. Furthermore, using a syringe to extract fluids from each container sequentially can contaminate the remaining fluid in the container, resulting in unnecessary waste.

[0003] To reduce pollution and waste in fluid mixing operations, utility model patent application number 201720324257.1 discloses a drug mixing syringe and a drug mixing assembly. The drug mixing syringe provided herein is connected to another syringe via a connector. When mixing drugs, the drugs can be transferred back and forth between the two syringes by simply pushing and pulling the piston rod of the syringe. However, the drug mixing assembly described in this patent requires the operator to frequently push and pull the piston rod manually when mixing drugs. This is not only time-consuming and labor-intensive, but also difficult to avoid drug quality problems caused by improper operation of the operator. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a fluid mixing device, which uses an alternating drive mechanism instead of human hands to alternately press the plunger rods of two syringes, effectively overcoming the time-consuming and labor-intensive problems of traditional manual operation.

[0005] To achieve the above-mentioned purpose and other related purposes, the present invention provides a fluid mixing device, including a mixing assembly, the mixing assembly including a mixing joint and a syringe connected via the mixing joint; the fluid mixing device including a support and an alternating drive mechanism; the mixing assembly is mounted on the support; the alternating drive mechanism is used to drive the plunger rods of each syringe to move alternately toward the mixing joint; the fluid mixing device includes a controller, the controller is connected to the alternating drive mechanism, so that the medicine automatically circulates between the various syringes to achieve mixing, effectively overcoming the time-consuming and labor-intensive problems of traditional manual operation.

[0006] Preferably, the support member is provided with a push rod for pressing each plunger rod respectively, and each push rod is slidably arranged along the axial direction of the corresponding plunger rod; the alternating drive mechanism is connected to each push rod to drive each push rod to move alternately in a direction close to the mixing joint.

[0007] Preferably, the alternating drive mechanism includes multiple linear drive assemblies; the number of the linear drive assemblies is the same as the number of push rods, and the linear output ends of the multiple linear drive assemblies are respectively connected to each push rod; the corresponding push rods are driven by the linear drive assemblies to move toward or away from the mixing joint, so as to achieve alternating pressing of the plunger rods on each syringe, thereby mixing the liquid in each syringe.

[0008] Preferably, the linear drive assembly is a linear motor or a motor screw assembly or a cylinder or a hydraulic cylinder, and the user can choose according to actual conditions.

[0009] Preferably, the number of syringes in the mixing assembly is two; the alternating drive mechanism includes a drive source and a transmission assembly connected to the drive source; the two push rods are both installed on the transmission assembly and move alternately toward the mixing joint under the drive of the transmission assembly; since the two push rods are driven by the same drive source, not only the structural cost is reduced, but also the control difficulty is effectively reduced.

[0010] Preferably, the two syringes in the mixing assembly are not coaxial; the transmission assembly includes two synchronous wheels, a transmission wheel and a synchronous belt wrapped around the synchronous wheels and the transmission wheels; the driving source is used to drive any synchronous wheel to rotate, and the center line connecting the two synchronous wheels and the transmission wheel is parallel to the axes of the two syringes respectively; the two push rods are respectively installed on the synchronous belts on both sides of the transmission wheel, so as to move alternately towards the mixing joint under the drive of the synchronous belt.

[0011] Preferably, the two syringes in the mixing assembly are coaxially arranged; the transmission assembly includes a screw and two screw nuts threadedly mounted on the screw, and the screw is driven to rotate by a driving source; the axial direction of the screw is parallel to the axial direction of the plunger rod, and the two push rods are respectively mounted on the two screw nuts.

[0012] Preferably, the two syringes in the mixing assembly are coaxially arranged; the transmission assembly includes a rack and a gear matched with the rack, and the gear is driven by a driving source; the length direction of the rack is parallel to the axial direction of the plunger rod, and the two push rods are spaced apart and arranged on the rack;

[0013] Alternatively, the transmission assembly includes two synchronous wheels spaced apart along the axial direction of the plunger rod and a synchronous belt wrapped around the two synchronous wheels; the driving source drives any one of the synchronous wheels to rotate; the two push rods are spaced apart on the synchronous belt and move synchronously in the same direction driven by the synchronous belt.

[0014] Preferably, the support body is a box body, and the alternating drive mechanism and the control box are both arranged in the box body; an operation display screen is provided on the box body, and the operation display screen is connected to the controller; arranging the alternating drive mechanism in the box body not only improves the aesthetics of the fluid mixing device, but also facilitates the transfer of the fluid mixing device; and the setting of the operation display screen facilitates the setting of mixing parameters.

[0015] Preferably, a power switch and a control switch are provided on the box; the power switch is connected to the power supply unit and is used to control the on and off state of the fluid mixing device; the control switch is connected to the controller and is used to control the start and end of the mixing action.

[0016] Preferably, the box body is provided with a placement cavity for placing the mixing assembly; the placement cavity includes a connector placement cavity and a syringe placement cavity; the mixing connector includes a connector body and a connector bracket engaged with the connector placement cavity; the mixing assembly and the box body are detachably fixed by the engagement of the connector bracket with the connector placement cavity.

[0017] Preferably, the box body is provided with an observation cover for opening or closing the placement cavity; the observation cover is connected to the box body via a damping shaft or a damping hinge, and the box body is provided with a cover opening detection sensor, and the cover opening detection sensor is connected to the controller; the observation cover can not only close the placement cavity to prevent the medical staff's fingers from accidentally entering the placement cavity and being squeezed and injured by the alternating drive mechanism, but also facilitate the medical staff to directly observe the mixing status of the medicines in the mixing assembly through the observation cover; the observation cover is connected to the box body via a damping shaft or a damping hinge, thereby increasing the resistance when it is opened to prevent the syringe assembly below from hitting the observation cover and causing the observation cover to open (that is, when the syringes on both sides are subjected to pushing force, the mixing joint in the middle of the mixing assembly will rise and lift the observation cover); the cover opening detection sensor can prevent the alternating drive mechanism from starting when the observation cover is open.

[0018] As described above, the fluid mixing device of the present invention has the following beneficial effects:

[0019] The present application utilizes an alternating drive mechanism to replace manual operation to alternately press the plunger rods on each syringe, effectively avoiding the time-consuming and labor-intensive manual pressing, irregular operation and other problems, which not only reduces manpower occupation, but also effectively ensures the quality of the final mixed medicine; the solution of using the same drive source to drive the two push rods to move alternately toward the mixing joint can not only reduce the cost of the alternating drive mechanism, but also effectively reduce the control difficulty of the alternating drive mechanism, avoiding the problem of structural collision damage caused by asynchronous control when the two drive sources are controlled separately; in addition, the setting of the operation display screen also makes it convenient for medical staff to set the mixing times and check the remaining times according to actual conditions, so as to meet the mixing requirements of different medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a mixing assembly in the prior art.

[0021] Figure 2 for Figure 1 Axial cross-section of .

[0022] Figure 3 and Figure 4 These are three-dimensional images of the fluid mixing device at different viewing angles.

[0023] Figure 5 for Figure 3 Top view of .

[0024] Figure 6 This is an exploded view of the fluid mixing device after removing the mixing components.

[0025] Figure 7 It is a top view of the upper box.

[0026] Figure 8 It is a three-dimensional diagram of the upper box.

[0027] Figure 9 Schematic diagram of two linear drive components assisting mixing components.

[0028] Figure 10 This is a schematic diagram of how the synchronous transmission component assists the mixing component in mixing when the two syringes in the mixing component are not coaxial.

[0029] Figure 11 and Figure 12 Schematic diagram of the synchronous transmission assembly assisting the mixing of the mixing assembly under different embodiments when two syringes in the mixing assembly are coaxial.

[0030] Description of Reference Numerals

[0031] Mixing assembly 01, mixing joint 011, joint body 0111, joint bracket 0112, syringe 012, syringe barrel 0121, flange 01211, plunger rod 0122, box body 1, upper box body 1a, lower box body 1b, placement chamber 11, joint placement chamber 111, syringe placement chamber 112, finger avoidance chamber 113, push rod slide 1121, observation cover 12, linear drive assembly 21, screw motor 211, screw 212, guide rail 213, sliding plate 214, synchronous wheel 221, transmission wheel 222, synchronous belt 223, rack 224, gear 225, push rod 3, operation display screen 41, power switch 51, control switch 52. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0033] See also Figures 1 to 12 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this utility model. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by this utility model without affecting the efficacy and purpose that can be achieved by this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.

[0034] The structure of the existing mixing component 01 is as follows Figure 1 and Figure 2 As shown, it includes a mixing joint 011 and multiple syringes 012 connected via the mixing joint 011; wherein, the syringe 012 includes a syringe 0121 and a plunger rod 0122; one end of the syringe 0121 is provided with an interface connected to the mixing joint 011, and an elastic piston is fixed to the end of the plunger rod 0122 close to the interface; the elastic piston and the inner wall of the syringe 0121 can achieve a sealed sliding connection; by alternately pressing each plunger rod 0122, the medicine can flow between each syringe 0121 to achieve mixing. In the present application, multiple means at least two. In addition, for the convenience of description, in the following embodiments, the length direction (i.e., the axial direction) of one of the syringes 012 is defined as the left-right direction, the height direction of the syringe 012 is defined as the up-down direction, and the direction perpendicular to both the left-right direction and the up-down direction is defined as the front-back direction. Based on this, Figure 5 The upper side and the lower side of the paper are respectively the rear direction and the front direction, the left side and the right side of the paper are respectively the right direction and the left direction, and the outer side and the inner side of the paper are respectively the lower direction and the upper direction.

[0035] Example 1

[0036] like Figures 3 to 5As shown, the fluid mixing device provided in the first embodiment can automatically mix multiple fluids; the fluid mixing device includes a support, a mixing component 01, an alternating drive mechanism and a controller; wherein the mixing component 01 includes a mixing joint 011 and multiple syringes 012 connected via the mixing joint 011; the alternating drive mechanism is electrically connected to the controller, and under the control of the controller, the alternating drive mechanism drives the plunger rods 0122 of each syringe 012 to move alternately toward the mixing joint 011, so that the fluid flows and mixes between the various syringes 012; the controller is connected to an operation display screen 41, which is used to set the working parameters of the fluid mixing device and display mixing data including the number of mixing times.

[0037] In this embodiment, the preferred structure of the alternating drive mechanism is as follows: Figure 6 and Figure 9 As shown, it includes multiple linear drive components 21, and the number of linear drive components 21 is the same as the number of syringes 012 in the mixing component 01, so as to realize a one-to-one correspondence between the linear drive components 21 and the syringes 012; in this way, when a linear drive component 21 presses the plunger rod 0122 of the corresponding syringe 012 to move toward the mixing joint 011, the linear output end of a linear drive component 21 can be reset or moved in the direction away from the mixing joint 012 to avoid the extended plunger rod 0122, thereby ensuring that the fluid in the pressed syringe 012 can smoothly enter the syringe 012 from which the plunger rod 0122 extends for fluid mixing; therefore, it is only necessary to make each linear drive component 21 in the alternating drive mechanism alternately press the plunger rod 0122 of the corresponding syringe 012, so that the fluid can flow between each syringe 012 to achieve fluid mixing.

[0038] In an optional embodiment, multiple mixing components 01 can be provided and driven by the same alternating drive mechanism to simultaneously achieve mixing of multiple groups of liquid medicines; when the number of syringes 012 in the mixing component 01 is two, each mixing component 01 can be arranged side by side or spaced apart up and down; when the number of syringes 012 in the mixing component 01 is greater than two, each mixing component 01 needs to be spaced apart up and down.

[0039] When there are two syringes 012 in the mixing assembly 01 involved in the fluid mixing device, the working principle of the fluid mixing device is as follows: 1) the mixing assembly 01 is mounted on the support frame, and the linear output ends of the two linear drive assemblies are reset (i.e., in a return-to-zero state); 2) according to the specifications of the syringe 012, the volume of the initial fluid in the syringe 012, and the type of the fluid in the syringe 012, the number of mixing times and the driving distances L1 and L2 of the two linear drive assemblies (i.e., the driving distance of the first linear drive assembly is L1, the driving distance of the second linear drive assembly is L2, and the driving distance is the linear output end of the linear drive assembly). The controller first controls the linear output end of the first linear drive component to move a driving distance L1 toward the mixing joint 011; 4) the controller controls the first linear drive component to reset, and at the same time controls the linear output end of the second linear drive component to move a driving distance L2 toward the mixing joint 011; then the controller controls the second linear drive component to reset, and at the same time controls the linear output end of the first linear drive component to move a driving distance L1 toward the mixing joint 011; repeat step 4) and stop after the mixing times are reached.

[0040] Of course, the linear output ends of the two linear drive components 21 can also be moved toward the mixing joint 011 first, until the linear output ends of each linear drive component 21 are in a pressure-free contact state with the corresponding plunger rod 0122; then the linear output end of the first linear drive component is moved toward the mixing joint 011, and at the same time, the linear output end of the second linear drive component is moved toward the mixing joint 011, so that the fluid in one syringe 012 completely enters the other syringe; then the controller cyclically controls the linear output end of the second linear drive component to move a first preset distance toward or away from the mixing joint 011, and at the same time, the linear output end of the first linear drive component moves a second preset distance toward or away from the mixing joint 011, so that the fluid circulates between the two syringes 012.

[0041] It is understood that the linear drive assembly 21 can directly press the plunger rod 0122 of the corresponding syringe 012, or can indirectly press the plunger rod 0122 of the corresponding syringe 012 via the push rod 3, without limitation. In this embodiment, a push rod 3 is provided at the linear output end of each linear drive assembly 21, and the push rod 3 is slidably mounted on the support member along the axial direction of the corresponding plunger rod 0122.

[0042] It is understandable that the linear drive assembly has various structural forms, and it can adopt various devices capable of achieving linear reciprocating movement, such as a linear motor, a motor screw assembly, a crank slider assembly, a cylinder, or a hydraulic cylinder, etc., without limitation. In this embodiment, the preferred structure of the linear drive assembly is as follows: Figure 9 As shown, it includes a screw motor 211, a screw 212, a guide rail 213 and a sliding plate 214; wherein, the screw 212 is arranged parallel to the guide rail 213, and both ends of the screw 212 are rotatably mounted on the support; the sliding plate 214 is slidably mounted on the guide rail 213, and the sliding plate 214 is fixedly connected to the screw nut on the screw 212; the screw motor 211 is used to drive the screw 212 to rotate, so as to drive the push rod 3 to perform high-precision linear reciprocating movement through the sliding plate 214 (i.e., the linear output end).

[0043] In order to improve the overall aesthetics of the fluid mixing device, the support member is preferably configured as a box body 1. Figure 3 、 Figure 5 and Figure 6 As shown, the box body 1 includes an upper box body 1a and a lower box body 1b, and the upper box body 1a and the lower box body 1b are detachably connected to form an internal space for accommodating the alternating drive mechanism; in this way, the alternating drive mechanism can be hidden in the box body 1, greatly improving the aesthetics of the fluid mixing device.

[0044] See also Figures 5 to 8 As a preferred design, the housing 1 is provided with a placement cavity 11 for placing the mixing assembly 01; the placement cavity 11 includes a connected connector placement cavity 111 and a syringe placement cavity 112. The connector placement cavity 111 is used to accommodate the mixing connector 011 of the mixing assembly 01, and the syringe placement cavity 112 is used to accommodate the syringe 012 of the mixing assembly 01. A push rod slot 1121 is provided on the cavity wall of the syringe placement cavity 112, and the end of the push rod 3 away from the swing plate 214 extends into the syringe placement cavity 112 through the push rod slot 1121 to press the corresponding plunger rod 0122. In addition, to prevent the fixed parts of the mixing assembly 01 (i.e., the mixing connector 011 and the syringe 0121) from moving during the pressing process, the connector placement cavity 111 is engaged with the mixing connector 011 therein and / or the syringe placement cavity 112 is engaged with the syringe 0121 therein.

[0045] Since the mixing joint 011 is connected to each syringe 012 through the joint body 0111, the interface of the joint body 0111 is easily contaminated by the user's fingers when the mixing joint 0111 and the syringe 012 are assembled. In order to reduce the possibility of interface contamination, a joint bracket 0112 (such as a bracket 0112) for the user to grasp is usually provided outside the joint body 0111. Figure 2As shown), in this way, the connector bracket 0112 can be engaged with the connector placement cavity 111, so that the connector placement cavity 111 can be used to limit the horizontal movement and / or horizontal rotation of the connector bracket 0112; of course, if a flange 01211 is provided on the syringe barrel 0121 of the syringe 012, a flange groove (not shown in the figure) that engages with the flange 01211 can also be provided in the syringe placement cavity 112, so that the horizontal movement of the syringe barrel 0121 can be limited by the engagement of the flange groove with the flange 01211; in this embodiment, it is preferred to utilize the engagement setting of the connector bracket 0112 and the connector placement cavity 111 to limit the position of the fixed part of the mixing assembly 01.

[0046] Furthermore, if Figure 5 、 Figure 7 and Figure 8 As shown, the placement cavity 11 is preferably arranged at the top of the box body 1 ; in order to improve the placement convenience of the mixing assembly 01 , the placement cavity 11 also includes a finger avoidance cavity 113 connected to the connector placement cavity 111 .

[0047] Furthermore, if Figure 3 and Figure 4 As shown, the box body 1 is provided with an observation cover 12 for opening or closing the placement chamber 11. The observation cover can not only close the placement chamber 11 to prevent the medical staff's fingers from accidentally entering the placement chamber 11 and being squeezed and injured by the alternating drive mechanism, but also facilitate the medical staff to directly observe the fluid mixing situation in the mixing assembly 01 through the observation cover 12; in this embodiment, one side of the observation cover 12 is hinged to the box body 1 through a rotating shaft assembly, so that the observation cover 12 can be flipped up and down to open or close the placement chamber 11; the rotating shaft assembly is preferably a damping rotating shaft or a damping hinge, and the damping rotating shaft or the damping hinge is used to realize the infinite adjustment of the flipping angle of the observation cover 12; at the same time, the observation cover 12 can also prevent the syringe 012 from partially tilting up and lifting the observation cover 12 during the pushing and pulling process.

[0048] As a preferred design, the housing 1 is provided with a lid-opening detection sensor connected to the controller. This sensor detects the status of the observation cover 12 to prevent the alternating drive mechanism from activating while the observation cover 12 is open and / or opening the observation cover 12 during operation, thereby improving the safety of the fluid mixing device. The lid-opening detection sensor is a proximity switch or a distance sensor. In this embodiment, the lid-opening detection sensor is preferably a proximity switch.

[0049] like Figures 3 to 5 As shown, the housing 1 is provided with a power switch 51 and a control switch 52. The power switch 51 is connected to a power supply unit and is used to control the on / off state of the fluid mixing device. The control switch 52 is connected to a controller and is used to control the start and end of the mixing action. The power supply unit includes a rechargeable battery and / or a power cord for connecting to an external power source.

[0050] Example 2

[0051] The main differences between this embodiment and the first embodiment lie in the number of syringes 012 in the mixing assembly 01 and the structural form of the alternating drive mechanism.

[0052] In this embodiment, there are two syringes 012 in the mixing assembly 01, and the two syringes 012 are coaxially arranged; the alternating drive mechanism includes a drive source and a transmission assembly connected to the drive source; the two push rods 3 are both installed on the transmission assembly, and are driven by the transmission assembly to move alternately toward the mixing joint 011.

[0053] The transmission components can be constructed in a variety of ways, including but not limited to the following three configurations:

[0054] The first setting form: Figure 11 As shown, the transmission assembly includes a rack 224 and a gear 225 that cooperates with the rack 224, and the gear 225 is driven by a driving source (such as a motor); the length direction of the rack 224 is parallel to the axial direction of the plunger rod 0122, and the two push rods 3 are arranged on the rack 224 at intervals; in this way, when the gear 225 rotates and drives the rack 224 to move back and forth in a straight line, the two push rods 3 can move synchronously in the same direction to complete the alternating pressing action of the two plunger rods 0122.

[0055] The second setting form: Figure 12 As shown, the transmission assembly includes two synchronous wheels 221 spaced apart along the axial direction of the plunger rod 0122 and a synchronous belt 223 wound around the two synchronous wheels 221; the driving source drives any one of the synchronous wheels 221 to rotate; the two push rods 3 are spaced apart on the synchronous belt 223, and move synchronously in the same direction driven by the synchronous belt 223 to complete the alternating pressing action of the two plunger rods 0122.

[0056] The third setting form: the transmission assembly includes a screw 212 and two screw nuts threadedly installed on the screw 212, and the screw is driven to rotate by a driving source (such as a motor); the axial direction of the screw 212 is parallel to the axial direction of the plunger rod 0122, and the two push rods 3 are respectively installed on the two screw nuts; in this way, the rotation of the screw 212 can be used to achieve synchronous and unidirectional movement of the two push rods 3, thereby completing the alternating pressing action of the two plunger rods 0122.

[0057] This embodiment uses the same driving source to drive the two push rods 3 to move alternately, which not only reduces the structural cost but also effectively reduces the control difficulty.

[0058] Example 3

[0059] The only difference between this embodiment and the first embodiment is the number of syringes 012 in the mixing assembly 01 and the structural form of the alternating drive mechanism.

[0060] In this embodiment, the number of syringes 012 in the mixing assembly 01 is two, and the two syringes 012 are arranged on different axes; the alternating drive mechanism includes a drive source and a transmission assembly connected to the drive source; the two push rods 3 are both installed on the transmission assembly and are driven by the transmission assembly to move alternately toward the mixing joint 011; wherein, the structure of the transmission assembly is as follows Figure 10 As shown, it includes two synchronous wheels 221, a transmission wheel 222 and a synchronous belt 223 wound around the synchronous wheels 221 and the transmission wheel 222; the driving source is used to drive any synchronous wheel to rotate, and the center line connecting the two synchronous wheels 221 and the transmission wheel 222 is parallel to the axis of the two syringes 012 respectively; the two push rods 3 are respectively installed on the synchronous belt 223 on both sides of the transmission wheel 222; in this way, the two push rods 3 can be driven by the synchronous belt 223 to move alternately toward the mixing joint 011 to complete the alternating pressing action of the two plunger rods 0122.

[0061] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A fluid mixing device, comprising a mixing assembly (01), wherein the mixing assembly (01) comprises a mixing joint (011) and a syringe (012) connected via the mixing joint (011); characterized in that: The fluid mixing device comprises a support and an alternating drive mechanism; the mixing assembly (01) is mounted on the support; the alternating drive mechanism is used to drive the plunger rods (0122) of each syringe (012) to move alternately toward a mixing joint (011); the fluid mixing device comprises a controller, which is connected to the alternating drive mechanism.

2. A fluid mixing device according to claim 1, characterized in that: The support member is provided with a push rod (3) for respectively pressing each plunger rod (0122), and each push rod (3) is respectively slidably arranged along the axial direction of the corresponding plunger rod; the alternating drive mechanism is connected to each push rod (3) to drive each push rod (3) to move alternately in a direction close to the mixing joint (011).

3. A fluid mixing device according to claim 2, characterized in that: The alternating drive mechanism comprises a plurality of linear drive assemblies (21); the number of the linear drive assemblies (21) is the same as the number of the push rods (3), and the linear output ends of the plurality of linear drive assemblies (21) are respectively connected to each push rod (3).

4. A fluid mixing device according to claim 3, characterized in that: The linear drive assembly (21) is a linear motor or a motor screw assembly or an air cylinder or a hydraulic cylinder.

5. A fluid mixing device according to claim 2, characterized in that: The number of syringes (012) in the mixing assembly (01) is two; the alternating drive mechanism comprises a drive source and a transmission assembly connected to the drive source; the two push rods (3) are both mounted on the transmission assembly and are driven by the transmission assembly to move alternately toward the mixing joint (011).

6. A fluid mixing device according to claim 5, characterized in that: The two syringes (012) in the mixing assembly (01) are not coaxial; the transmission assembly comprises two synchronous wheels (221), a transmission wheel (222), and a synchronous belt (223) wound around the synchronous wheel (221) and the transmission wheel (222); the driving source is used to drive any synchronous wheel to rotate, and the center line connecting the two synchronous wheels (221) and the transmission wheel (222) is parallel to the axis of the two syringes (012); the two push rods (3) are respectively mounted on the synchronous belt (223) on both sides of the transmission wheel (222) so as to move alternately towards the mixing joint (011) under the drive of the synchronous belt (223).

7. A fluid mixing device according to claim 5, characterized in that: The two syringes (012) in the mixing assembly (01) are coaxially arranged; the transmission assembly comprises a lead screw and two lead screw nuts threadedly mounted on the lead screw, and the lead screw is driven to rotate by a driving source; the axial direction of the lead screw is parallel to the axial direction of the plunger rod (0122), and the two push rods (3) are respectively mounted on the two lead screw nuts.

8. A fluid mixing device according to claim 5, characterized in that: The two syringes (012) in the mixing assembly (01) are coaxially arranged; the transmission assembly comprises a rack (224) and a gear (225) matched with the rack (224), and the gear (225) is driven by a driving source; the length direction of the rack (224) is parallel to the axial direction of the plunger rod (0122), and the two push rods (3) are spaced apart and arranged on the rack (224); Alternatively, the transmission assembly comprises two synchronous wheels (221) spaced apart along the axial direction of the plunger rod (0122) and a synchronous belt (223) wound around the two synchronous wheels (221); the driving source drives any one of the synchronous wheels (221) to rotate; and the two push rods (3) are spaced apart on the synchronous belt (223) and move synchronously in the same direction under the drive of the synchronous belt (223).

9. A fluid mixing device according to any one of claims 2 to 8, characterized in that: The supporting member is a box (1), and the alternating drive mechanism and the controller are both arranged in the box (1); an operation display screen (41) is provided on the box (1), and the operation display screen (41) is connected to the controller.

10. A fluid mixing device according to claim 9, characterized in that: The box (1) is provided with a power switch (51) and a control switch (52); the power switch (51) is connected to a power supply unit and is used to control the on and off state of the fluid mixing device; the control switch (52) is connected to a controller and is used to control the start and end of the mixing action.

11. A fluid mixing device according to claim 9, characterized in that: The box (1) is provided with a placement cavity (11) for placing the mixing assembly (01); the placement cavity (11) comprises a connector placement cavity (111) and a syringe placement cavity (112); the mixing connector (011) comprises a connector body (0111) and a connector bracket (0112) engaged with the connector placement cavity (111).

12. A fluid mixing device according to claim 11, characterized in that: The box body (1) is provided with an observation cover (12) for opening or closing the placement cavity (11); the observation cover (12) is connected to the box body via a damping shaft or a damping hinge; the box body (1) is also provided with a cover opening detection sensor, and the cover opening detection sensor is connected to a controller.

Images