阅读说明：本技术 一种非接触式混匀系统 (Non-contact blending system ) 是由 杨基恒 李恒 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种非接触式混匀系统,动力源通过同步机构的连接带动主曲轴围绕主同心轴旋转,进而带动主偏心轴及主偏心轴上的反应杯座座子、反应杯座做偏心旋转运动,此时次曲轴的次偏心轴在反应杯座座子的带动下也会做偏心旋转运动,由于主曲轴与次曲轴会形成平行双曲柄结构,从而完全限制住反应杯座的自转,并让所有个混匀孔位的运动走势一致,保证所有混匀孔位具有一样的混匀效果,即在保证混匀效果一致的前提下仅需一个动力源即可实现多个混匀位混匀,比如三个、五个、七个甚至十个混匀位的并行式混匀,大大提升混匀效率的前提下降低了成本。(The invention discloses a non-contact blending system, wherein a power source drives a main crankshaft to rotate around a main concentric shaft through the connection of a synchronous mechanism, so as to drive a main eccentric shaft and a reaction cup seat on the main eccentric shaft to do eccentric rotation motion, and a secondary eccentric shaft of a secondary crankshaft can also do eccentric rotation motion under the drive of the reaction cup seat, and the main crankshaft and the secondary crankshaft can form a parallel double-crank structure, so that the rotation of the reaction cup seat is completely limited, the motion trends of all blending hole sites are consistent, all blending hole sites are ensured to have the same blending effect, namely, a plurality of blending positions can be mixed by only one power source on the premise of ensuring the consistent blending effect, for example, three, five or even seven blending positions are mixed in a parallel mode, and the cost is reduced on the premise of greatly improving the blending efficiency.)

1. A non-contact blending system is characterized by comprising a blending mechanism for placing a blending cup, a bottom plate for supporting the blending mechanism, a synchronizing mechanism for driving the blending mechanism, and a power source for providing power for the synchronizing mechanism;

the power source and the synchronous mechanism are respectively arranged on the bottom plate;

mixing mechanism includes reaction cup seat, main bent axle, time bent axle and bearing housing, reaction cup seat fixed mounting be in on the reaction cup seat, bearing housing fixed mounting in on the bottom plate for place the bearing, main bent axle with time bent axle runs through respectively the bearing housing, main bent axle's one end with reaction cup seat fixed connection, main bent axle's the other end with synchro mechanism rotates and connects, time bent axle's one end with bottom plate fixed connection, time bent axle's the other end with reaction cup seat sliding connection.

2. The non-contact blending system of claim 1,

the main crankshaft comprises a main concentric shaft connected with the synchronizing mechanism, the main concentric shaft penetrates through the bearing seat and then is connected with the synchronizing mechanism, a main shaft large step is integrally arranged at the top of the main concentric shaft, a main eccentric shaft is integrally arranged at the top of the main shaft large step, a main shaft small step is integrally fixed at the outer side of the main eccentric shaft, and the main eccentric shaft is connected with the reaction cup seat through a bearing.

3. The system of claim 2, wherein the system further comprises a mixer,

the secondary crankshaft comprises a secondary concentric shaft fixed on the bottom plate, a secondary shaft large step is integrally fixed at the top of the secondary concentric shaft, a secondary eccentric shaft is integrally fixed at the top of the secondary shaft large step, and the secondary eccentric shaft is connected with the reaction cup seat through a bearing.

4. The system of claim 2, wherein the system further comprises a mixer,

the synchronous mechanism comprises a driving wheel which is rotatably arranged at the bottom of the bottom plate, and the driving wheel is connected with the output end of the power source; the outside cover of action wheel is equipped with the hold-in range, one side of hold-in range with the action wheel is connected, the opposite side of hold-in range with from the driving wheel connection, from the driving wheel with main concentric shaft fixed connection to the rotation sets up on the bottom plate.

5. The system of claim 4, wherein the system further comprises a mixer,

the synchronous mechanism further comprises a retainer ring, wherein the retainer ring is arranged on the driven wheel and is matched with a sensor to monitor the rotating speed of the driven wheel and determine the initial position of the driven wheel.

6. The non-contact blending system of claim 1,

the blending mechanism further comprises a bearing pressing plate, wherein the bearing pressing plate is arranged on the bearing seat and limits a bearing inside the bearing seat.

7. The non-contact blending system of claim 1,

the bottom plate is provided with a bearing seat mounting hole, and the bearing seat is fixedly connected with the bottom plate through the mounting hole.

8. The non-contact blending system of claim 1,

the bottom plate is also provided with a power source mounting hole, and the power source is fixedly connected with the bottom plate through the power source mounting hole.

9. The non-contact blending system of claim 1,

the non-contact blending system further comprises a support column, and the support column passes through the support column mounting hole and is fixedly connected with the bottom plate.

10. The system of claim 3, wherein the system further comprises a mixer,

the reaction cup seat is provided with a first through hole and a second through hole, a bearing is placed in the first through hole, and the main eccentric shaft is matched with the bearing in the first through hole; and a bearing is placed in the second through hole, and the secondary eccentric shaft is matched with the bearing in the second through hole.

Technical Field

The invention relates to the technical field of chemiluminescence analysis, in particular to a non-contact blending system.

Background

Chemiluminescence immunoassay is a novel immunoassay technology which is established by combining luminescence analysis and immunoreaction, and in recent years, chemiluminescence gradually replaces enzyme-linked immunosorbent assay and other technologies to become mainstream technologies of immunoassay due to the characteristics of high sensitivity, strong specificity, easy automation and the like.

Chemiluminescent immunoassay generally involves the addition of sample reagents, mixing, incubation, magnetic separation, addition of substrate, mixing, and incubation. The mixing is divided into a contact type mixing and a non-contact type mixing, the contact type mixing can introduce the risk of cross contamination, the non-contact type mixing can effectively avoid the problems, more reaction cups can be mixed in the specified mixing time, the working efficiency of the whole machine can be improved, and the non-contact type mixing is easy to cause the realization of complex structure.

At present in traditional mixing mechanism, generally only design single mixing position, the efficiency of mixing is not high, if for promoting instrument mixing flux, increases the mixing module of a plurality of separations, though promoted mixing efficiency, must increase the instrument cost, consumes the instrument space, if set up a plurality of mixing positions as an organic whole, is difficult to guarantee the unanimity of all mixing position mixing effects again.

Disclosure of Invention

The invention aims to provide a non-contact blending system, and aims to solve the technical problems that in a blending mechanism in the prior art, only a single blending position is generally designed, the blending efficiency is not high, if a plurality of separated blending modules are added to improve the blending flux of an instrument, the blending efficiency is improved, but the instrument cost is increased, the instrument space is consumed, and if a plurality of blending positions are integrated, the consistency of blending effects of all the blending positions is difficult to ensure.

In order to achieve the purpose, the non-contact blending system comprises a blending mechanism for placing a blending cup, a bottom plate for supporting the blending mechanism, a synchronization mechanism for driving the blending mechanism, and a power source for providing power for the synchronization mechanism;

the power source and the synchronous mechanism are respectively arranged on the bottom plate;

mixing mechanism includes reaction cup seat, main bent axle, time bent axle and bearing housing, reaction cup seat fixed mounting be in on the reaction cup seat, bearing housing fixed mounting in on the bottom plate for place the bearing, main bent axle with time bent axle runs through respectively the bearing housing, main bent axle's one end with reaction cup seat fixed connection, main bent axle's the other end with synchro mechanism rotates and connects, time bent axle's one end with bottom plate fixed connection, time bent axle's the other end with reaction cup seat sliding connection.

The main crankshaft comprises a main concentric shaft connected with the synchronizing mechanism, the main concentric shaft penetrates through the bearing seat and then is connected with the synchronizing mechanism, a main shaft large step is integrally arranged at the top of the main concentric shaft, a main eccentric shaft is integrally arranged at the top of the main shaft large step, a main shaft small step is integrally fixed at the outer side of the main eccentric shaft, and the main eccentric shaft is connected with the reaction cup seat through a bearing.

The secondary crankshaft comprises a secondary concentric shaft fixed on the bottom plate, a secondary shaft large step is integrally fixed at the top of the secondary concentric shaft, a secondary eccentric shaft is integrally fixed at the top of the secondary shaft large step, and the secondary eccentric shaft is connected with the reaction cup seat through a bearing.

The synchronous mechanism comprises a driving wheel which is rotatably arranged at the bottom of the bottom plate, and the driving wheel is connected with the output end of the power source; the outside cover of action wheel is equipped with the hold-in range, one side of hold-in range with the action wheel is connected, the opposite side of hold-in range with from the driving wheel connection, from the driving wheel with main concentric shaft fixed connection to the rotation sets up on the bottom plate.

The synchronous mechanism further comprises a retainer ring, wherein the retainer ring is arranged on the driven wheel and is matched with a sensor to monitor the rotating speed of the driven wheel and determine the initial position of the driven wheel.

The blending mechanism further comprises a bearing pressing plate, wherein the bearing pressing plate is arranged on the bearing seat and limits a bearing inside the bearing seat.

The bottom plate is provided with a bearing seat mounting hole, and the bearing seat is fixedly connected with the bottom plate through the mounting hole.

The bottom plate is provided with a power source mounting hole, and the power source is fixedly connected with the bottom plate through the power source mounting hole.

The non-contact blending system further comprises a support column, and the support column passes through the support column mounting hole and is fixedly connected with the bottom plate.

The reaction cup base seat is provided with a first through hole and a second through hole, a bearing is placed in the first through hole, and the main eccentric shaft is matched with the bearing in the first through hole; and a bearing is placed in the second through hole, and the secondary eccentric shaft is matched with the bearing in the second through hole.

According to the non-contact blending system, the power source drives the main crankshaft to rotate around the main concentric shaft through the connection of the synchronous mechanism, so that the main eccentric shaft and the reaction cup seat on the main eccentric shaft are driven to do eccentric rotation motion, the secondary eccentric shaft of the secondary crankshaft can also do eccentric rotation motion under the driving of the reaction cup seat, and the main crankshaft and the secondary crankshaft can form a parallel double-crank structure, so that the rotation of the reaction cup seat is completely limited, the motion trends of all blending hole sites are consistent, the uniform blending effect of all the blending hole sites is ensured, namely, on the premise of ensuring the uniform blending effect, a plurality of blending positions, such as three, five or even seven blending positions can be realized by only one power source, the parallel blending of three, five or even seven blending positions is ensured, and the cost is reduced on the premise of greatly improving the blending efficiency. It should be noted that, in the practical use of the blending system, a third crankshaft may be added according to the requirement, so that the mechanism is forced to pass through the dead point position, and the dead point uncertainty problem of the parallel double-crank structure is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of the mixing system of the present invention.

FIG. 2 is a schematic structural view of the kneading system base plate of the present invention.

FIG. 3 is an exploded view of the blending system of the present invention.

Fig. 4 is an installation structure view of a main crankshaft and a sub-crankshaft of the present invention.

Fig. 5 is a schematic view of a parallel dual crank configuration of the present invention.

In the figure: 1-mixing mechanism, 2-bottom plate, 3-synchronization mechanism, 4-power source, 5-support column, 11-reaction cup seat, 12-reaction cup seat, 13-main crankshaft, 14-secondary crankshaft, 15-bearing seat, 16-bearing press plate, 21-bearing seat mounting hole, 22-power source mounting hole, 23-support column mounting hole, 24-bolt hole, 31-driving wheel, 32-synchronous belt, 33-driven wheel, 34-check ring, 121-first through hole, 122-second through hole, 131-main concentric shaft, 132-main shaft large step, 133-main eccentric shaft, 134-main shaft small step, 141-secondary concentric shaft, 142-secondary shaft large step and 143-secondary eccentric shaft.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 5, the present invention provides a non-contact blending system, which includes a blending mechanism 1 for placing a blending cup, a bottom plate 2 for supporting the blending mechanism 1, a synchronization mechanism 3 for driving the blending mechanism 1, and a power source 4 for providing power for the synchronization mechanism 3;

the power source 4 and the synchronization mechanism 3 are respectively arranged on the bottom plate 2;

mixing mechanism 1 includes reaction cup seat 11, reaction cup seat 12, main crankshaft 13, inferior bent axle 14 and bearing seat 15, 11 fixed mounting of reaction cup seat are in on the reaction cup seat 12, bearing seat 15 fixed mounting in on the bottom plate 2 for place the bearing, main crankshaft 13 with inferior bent axle 14 runs through respectively bearing seat 15, main crankshaft 13's one end with reaction cup seat 12 fixed connection, main crankshaft 13's the other end with synchronizing mechanism 3 rotates and connects, inferior bent axle 14's one end with bottom plate 2 fixed connection, inferior bent axle 14's the other end with reaction cup seat 12 sliding connection.

Further, referring to fig. 4, the main crankshaft 13 includes a main concentric shaft 131 connected to the synchronization mechanism 3, the main concentric shaft 131 penetrates through the bearing seat 15 and then is connected to the synchronization mechanism 3, a main shaft large step 132 is integrally disposed at the top of the main concentric shaft 131, a main eccentric shaft 133 is integrally disposed at the top of the main shaft large step 132, a main shaft small step 134 is integrally fixed at the outer side of the main eccentric shaft 133, and the main eccentric shaft 133 is connected to the reaction cup seat 12 through a bearing.

Further, referring to fig. 4, the secondary crankshaft 14 includes a secondary concentric shaft 141 fixed on the bottom plate 2, a secondary shaft large step 142 is integrally fixed on a top of the secondary concentric shaft 141, a secondary eccentric shaft 143 is integrally fixed on a top of the secondary shaft large step 142, and the secondary eccentric shaft 143 is connected with the reaction cup holder 12 through a bearing.

In the embodiment, the power source 4 of the system is a stepping motor which is fixed on the bottom plate 2 through a waist mounting hole; three or more mixing holes which are arranged in a straight line at equal intervals are arranged on the reaction cup seat 11 and are used for placing reaction cups during mixing, the mixing holes are not necessarily arranged in a straight line and are only used for matching with a sample adding needle which only can do linear motion, and the reaction cup seat 11 is fixedly connected with the reaction cup seat 12; the main crankshaft 13 is divided into two parts, namely a main eccentric shaft 133 and a main concentric shaft 131, the main eccentric shaft 133 penetrates through a through hole of the reaction cup holder seat 12 and props against the reaction cup holder seat 12 to limit the movement of the reaction cup holder seat 12 in the vertical direction, and the main concentric shaft 131 penetrates through a mounting hole of the bottom plate 2 and is in contact fit with the bottom plate 2; the secondary crankshaft 14 is also divided into a secondary eccentric shaft 143 and a secondary concentric shaft 141, the secondary eccentric shaft 143 passes through the through hole of the reaction cup holder 12, but has no other limitation on the reaction cup holder 12, and the secondary concentric shaft 141 passes through the mounting hole of the bottom plate 2 and is fixed on the bottom plate 2; it should be noted that the eccentric axes of the main crankshaft 13 and the secondary crankshaft 14 have equal eccentric distances, and the distance between the two through holes of the reaction cup holder seat 12 is equal to the distance between the two crankshaft mounting holes on the bottom plate 2, so as to form a parallel double-crank structure, thereby completely limiting the tendency of the reaction cup holder seat 12 to rotate; when the blending system works, the power source drives the main crankshaft 13 to rotate around the main concentric shaft through the connection of the synchronizing mechanism 3, thereby driving the main eccentric shaft and the reaction cup seat 12 and the reaction cup seat 11 on the main eccentric shaft to do eccentric rotation motion, at this time, the secondary eccentric shaft 143 of the secondary crankshaft 14 will also do eccentric rotation motion under the driving of the reaction cup seat 12, because the main crankshaft 13 and the secondary crankshaft 14 form a parallel double-crank structure, the autorotation of the reaction cup holder 11 is completely limited, and ensures that the movement trends of all the mixing hole sites are consistent, ensures that all the mixing hole sites have the same mixing effect, namely, on the premise of ensuring the uniform mixing effect, the mixing of a plurality of mixing positions can be realized only by one power source 4, for example, the parallel mixing of three, five, seven or even ten mixing positions, the mixing efficiency is greatly improved, and the cost is reduced.

Further, referring to fig. 3 and 4, the synchronizing mechanism 3 includes a driving wheel 31 rotatably disposed at the bottom of the bottom plate 2, and the driving wheel 31 is connected to the output end of the power source 4; the outside cover of action wheel 31 is equipped with hold-in range 32, hold-in range 32 one side with the action wheel 31 is connected, hold-in range 32's opposite side is connected with from driving wheel 33, from driving wheel 33 with main concentric shaft 131 fixed connection, and rotate the setting and be in on the bottom plate 2.

Further, referring to fig. 4, the synchronizing mechanism 3 further includes a retaining ring 34, where the retaining ring 34 is disposed on the driven wheel 33, and cooperates with a sensor to monitor the rotation speed of the driven wheel 33 and determine the initial position of the driven wheel 33.

In this embodiment, the synchronizing mechanism 3 of the system includes a driving wheel 31, a driven wheel 33 and a synchronous belt 32, the driving wheel 31 is directly fixed to the motor through the shaft hole on the wheel, the driven wheel 33 is further provided with a retainer ring 34 except the shaft hole, after the concentric shaft of the main crankshaft 13 passes through the bottom plate 2, the driven wheel 33 is fixedly connected to the concentric shaft through the shaft hole, the retainer ring 34 of the driven wheel 33 is used to cooperate with the photoelectric sensor to monitor the rotation speed in the working process, and simultaneously determine where the initial position of the reaction cup holder 11 is located, so that the driving wheel 31 is driven to rotate by the rotation of the motor shaft, and the driven wheel 33 is driven to rotate by the connection of the synchronizing mechanism 3, the driven wheel 33 drives the concentric shaft of the main crankshaft 13 to rotate, and further drives the reaction cup holder 12 and the reaction cup holder 11 on the main eccentric shaft and the main eccentric shaft to do eccentric rotation motion.

Further, please refer to fig. 3, the blending mechanism 1 further includes a bearing pressing plate 16, and the bearing pressing plate 16 is disposed on the bearing seat 15 and limits the bearing inside the bearing seat 15.

In the present embodiment, the bearing pressing plate 16 is detachably connected to the bearing holder 15 through bolts, the bearing pressing plate 16 has holes with the same position and diameter as the bearing holder 15, so that the primary crankshaft 13 and the secondary crankshaft 14 can penetrate through the bearing pressing plate 16 and the bearing holder 15, and the bearing pressing plate 16 can resist the bearings on the bearing holder 15, thereby preventing the bearings on the bearing holder 15 from moving axially.

Further, referring to fig. 2, a bearing seat mounting hole 21 is formed in the bottom plate 2, and the bearing seat 15 is fixedly connected to the bottom plate 2 through the mounting hole.

In the present embodiment, the bearing holder mounting hole 21 is a rectangular hole and penetrates the bottom plate 2, the bearing holder 15 is mounted in the bearing holder mounting hole 21 by a bolt, and the bearing holder 15 is used for supporting a bearing.

Further, referring to fig. 2, a power source mounting hole 22 is further formed in the bottom plate 2, and the power source 4 is fixedly connected to the bottom plate 2 through the power source mounting hole 22.

In the present embodiment, the power source mounting hole 22 on the bottom plate 2 is a waist hole, the power source mounting hole 22 is a waist hole for facilitating the tensioning for mounting the synchronization mechanism 3, and four bolt holes 24 for mounting bolts on the bottom plate 2 are respectively provided around the power source mounting hole 22.

Further, referring to fig. 2, a support column mounting hole 23 is further formed in the bottom plate 2, the non-contact blending system further includes a support column 5, and the support column 5 is fixedly connected to the bottom plate 2 through the support column mounting hole 23.

In the present embodiment, the support post 5 is installed under the base plate 2 and fixed to the analyzer at the same time, the support post installation hole 23 on the base plate 2 is a waist hole, and the support post installation hole 23 is a waist hole to facilitate position adjustment of the whole system.

Further, referring to fig. 4, the reaction cup holder 12 has a first through hole 121 and a second through hole 122, a bearing is disposed in the first through hole 121, and the main eccentric shaft 133 is engaged with the bearing in the first through hole 121; a bearing is placed in the second through hole 122, and the secondary eccentric shaft 143 is matched with the bearing in the second through hole 122.

In this embodiment, the reaction cup holder 12 is provided with through holes for mounting bearings, wherein the through holes include a first through hole 121 and a second through hole 122 for communicating two crankshafts, the first through hole 121 is provided with a bearing for rotatably mounting the main eccentric shaft 133, and the second through hole 122 is provided with a bearing for mounting the sub eccentric shaft 143.

The invention provides a non-contact blending system, which comprises a support column 5 for supporting the blending system, a power source 4, a blending mechanism 1 and a bottom plate 2 for mounting the power source 4 and the blending mechanism 1, as shown in figure 1. Wherein support column 5 installs under bottom plate 2 and is fixed in on the analysis appearance simultaneously, and power supply 4 links to each other and is fixed in on mounting plate 2 through hold-in range 32 with mixing mechanism 1.

As shown in fig. 2, the bottom plate 2 is provided with a support post mounting hole 23 for mounting the support post 5, a power source mounting hole 22 for mounting the power source 4, and a bearing seat mounting hole 21 for mounting the bearing seat 15, the support post mounting hole 23 and the power source mounting hole 22 on the bottom plate 2 are both waist holes, the support post mounting hole 23 is for facilitating position adjustment of the entire system, and the power source mounting hole 22 is for facilitating tensioning of the synchronization mechanism 3.

As shown in fig. 3 and 4, the power source 4 in this example is a stepping motor, the driving wheel 31 in the synchronizing mechanism 3 is fixedly connected to the motor shaft through the shaft hole, and the end surface of the driving wheel 31 coincides with the end surface of the motor shaft, so as to facilitate assembly, the motor is directly fixed on the bottom plate 2 through the mounting hole, and the driving wheel 31 passes through the waist hole and does not contact with the bottom plate 2.

As shown in fig. 3, the kneading mechanism 1 in this example includes a reaction cup holder 11, a reaction cup holder 12, a main crankshaft 13, a sub-crankshaft 14, and a bearing holder 15.

According to the mounting sequence, the bearing seat 15 is firstly mounted and fixed in the bearing seat mounting hole 21 on the bottom plate 2, and the bearing seat 15 is used for placing the bearing.

Secondly, both the primary crankshaft 13 and the secondary crankshaft 14 are passed through the bearing block 15. The main crankshaft 13 is divided into two parts, namely a main eccentric shaft 133 and a main concentric shaft 131, a main shaft large step 132 is arranged between the main eccentric shaft 133 and the main concentric shaft 131, and a main shaft small step 134 is also arranged between the main eccentric shaft 133 and the main shaft large step 132; the secondary crankshaft 14 is similar in construction to the primary crankshaft 13, but has only one secondary large step 142.

For the main crankshaft 13, the main concentric shaft 131 passes through the bearing seat 15 and then passes through the driven wheel 33, and the driven wheel 33 is fixed on the main concentric shaft 131 through a shaft hole and completes the fixing of the main crankshaft 13 together with a step. It should be noted that the driven wheel 33 is similar to the driving wheel 31, but the driven wheel 33 is provided with a retaining ring 34, and the retaining ring 34 cooperates with the photoelectric sensor mounted on the bottom plate 2 to monitor whether the rotation speed is normal during the operation and determine where the initial position of the blending system is located. For the secondary crankshaft 14, its fixation is accomplished by screws under the bottom plate 2 and steps of the secondary crankshaft 14.

Then, the reaction cup holder 12 is provided with a first through hole 121 and a second through hole 122, bearings are respectively placed in the first through hole 121 and the second through hole 122, the main eccentric shaft 133 and the secondary eccentric shaft 143 respectively pass through the first through hole 121 and the second through hole 122 and are respectively matched with the bearings, and the small step 134 of the main shaft abuts against the inner ring of the bearing in the bearing hole, so that the reaction cup holder 12 is connected and fixed with the main eccentric shaft 133, the motion of the reaction cup holder 12 in the vertical direction is limited, but the secondary eccentric shaft 143 does not limit the reaction cup holder 12 in the vertical direction.

Finally, the reaction cup holder 11 is fixed on the reaction cup holder 12, and a positioning measure exists between the reaction cup holder 11 and the reaction cup holder 12 to prevent a working error caused by installation deviation. The reaction cup seat 11 is provided with three mixing holes which are arranged in a linear and equidistant mode, the number of the mixing hole positions can be increased or reduced according to requirements, the mixing holes are used for placing reaction cups when in mixing, and the mixing holes are arranged in a linear mode, so that the mixing holes can be matched with sample adding needles which only support linear motion.

After the power source 4 and the blending mechanism 1 are both installed on the bottom plate 2, the synchronous belt 32 is respectively sleeved on the driving wheel 31 and the driven wheel 33, and the motor can be slightly moved to tension the synchronous belt 32 after the synchronous belt 32 is sleeved in due to the fact that the hole for installing the motor on the bottom plate 2 is a waist hole.

The working process of the blending system is as follows:

when the mixing system works, the motor drives the motor shaft to rotate, and the main crankshaft 13 is driven to rotate around the concentric shaft through the connection of the driving wheel 31, the driven wheel 33 and the synchronous belt 32, so that the main eccentric shaft 133, the reaction cup holder seat 12 and the reaction cup holder 11 on the main eccentric shaft 133 are driven to do eccentric rotation motion, and the reaction cups are further driven to eccentrically rotate so as to realize the mixing of reaction liquid in the reaction cups.

Because the mixing mechanism 1 quality is lighter, consequently set up the diameter ratio of action wheel 31 and follow driving wheel 33 diameter and be big, adopt this mode transmission, under the unchangeable condition of mixing rotational speed, the motor can be with less speed operation to guarantee control accuracy more easily, extension motor life.

When the system works, the sub eccentric shaft 143 of the sub crankshaft 14 is driven by the reaction cup base seat 12 to perform eccentric rotation movement, the eccentric distance between the main eccentric shaft 133 of the main crankshaft 13 and the sub eccentric shaft 143 of the sub crankshaft 14 is set to be equal, the distance between the two through holes of the reaction cup base seat 12 is equal to the distance between the two crankshaft mounting holes on the bottom plate 2, so that the main crankshaft 13 and the sub crankshaft 14 form a parallel double-crank structure as shown in fig. 5, thereby completely limiting the autorotation trend of the reaction cup base 11, keeping the movement trend of all mixing hole sites consistent with the eccentric shaft trend, ensuring that three mixing hole sites have the same mixing effect, improving the mixing stability, if necessary, increasing more mixing hole sites, theoretically, as long as the driving force is enough, the mixing hole sites can reach a very high upper limit, and still keeping the consistent effect, greatly saving the economic cost.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.