Oscillation driving mechanism and blending instrument

Abstract

The utility model relates to an oscillation driving mechanism and a blending instrument. The oscillation driving mechanism comprises a supporting frame and a motor assembling hole formed in the middle of the supporting frame, and further comprises an oscillation driving unit and a reagent frame, and the oscillation driving unit comprises a motor, a driving mechanism, a driving mechanism and a driving mechanism, and the motor is vertically arranged in the motor assembling hole and fixed to the upper end of a motor support; one end of the eccentric shaft is fixed on an output shaft of the motor, a bearing is assembled at the other end of the eccentric shaft, and a positioning seat is assembled on the outer side of the bearing; the counterweight disc is fixed on the annular outer wall of the eccentric shaft; the first eccentric sleeve is arranged on the outer sides of the eccentric shaft and the motor in a sleeving mode and fixed to the supporting frame, a shaft positioning hole matched with the positioning seat is formed in the middle of the first eccentric sleeve, and the positioning seat is assembled in the shaft positioning hole and fixedly connected with the first eccentric sleeve; wherein the reagent rack is sleeved on the first eccentric sleeve, so that the oscillation gravity center of the reagent rack is moved downwards to the upper part of the first eccentric sleeve. According to the utility model, a good uniform mixing effect can be achieved, the gravity center of the reagent shelf is moved downwards, and the vibration stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid mixing equipment technical field, concretely relates to a kind of oscillation driving mechanism and mixing apparatus. BACKGROUND

[0002] Mixing apparatus is commonly used liquid mixing equipment in biological or medical field, it is used to realize the sufficient uniform mixing of more than two liquid or soluble solid sample instead of manual, mainly applied to the field that sample, reagent mixing requirement is higher.

[0003] The utility model discloses a kind of constant temperature mixing apparatus, since the oscillation gravity center of reagent rack is higher compared with eccentric shaft generating vibration, reagent rack and reagent cloth pattern loaded on reagent rack will be fixed when oscillating, displacement and deviation are prone to occur, so fixed structure is needed;The constant temperature mixing apparatus includes, main machine base, cover plate is equipped on the upper portion of main machine base, and the cover plate is positioned and lifted to clamping fixed reagent rack by four limit rods fixed in the circumferential direction of main machine base, but since the existence of fixed structure, reagent loading and taking out operation of mixing apparatus is tedious and time-consuming, inconvenient to use.

[0004] Therefore, we propose a kind of oscillation driving mechanism and mixing apparatus. UTILITY MODEL CONTENTS

[0005] The application provides an oscillation driving mechanism and mixing apparatus to at least solve the problem of high gravity center of reagent rack in the prior art, the reagent rack fixing structure equipped by the instrument, which makes the reagent loading and taking out operation of mixing apparatus tedious and time-consuming, inconvenient to use.

[0006] In the first aspect, the application provides an oscillation driving mechanism, which comprises a support frame and a motor assembly hole opened in the middle of the support frame, and further comprises an oscillation driving unit and a reagent rack.

[0007] A motor is vertically arranged in the motor assembly hole and fixed to the upper end of a motor support frame.

[0008] An eccentric shaft is fixed to the output shaft of the motor at one end and has a bearing assembled at the other end, and the outer side of the bearing is assembled with a positioning seat.

[0009] A counterweight disc is fixed to the annular outer wall of the eccentric shaft.

[0010] A first eccentric sleeve is sleeved on the outer side of the eccentric shaft and the motor and fixed with the support frame, and a shaft positioning hole adapted to the positioning seat is opened in the middle, the positioning seat is assembled in the shaft positioning hole and fixedly connected with the first eccentric sleeve.

[0011] The reagent rack is sleeved on the first eccentric sleeve so that the oscillation center of the reagent rack is located at the middle part of the first eccentric sleeve.

[0012] Optionally, the oscillation driving unit further comprises a second eccentric sleeve, which is fixed to the middle part of the upper end of the first eccentric sleeve and arranged coaxially with the first eccentric sleeve.

[0013] Optionally, the reagent rack comprises:

[0014] The test tube rack body is annular, and the middle part thereof has a hollow cavity sleeved with the first eccentric sleeve;

[0015] The test tube sites are annularly arranged on the annular side wall of the test tube rack body to clasp and fix test tubes.

[0016] Optionally, the annular outer wall of the first eccentric sleeve is provided with a plurality of vertically arranged limiting keys to limit the axial rotation of the assembled reagent rack.

[0017] Optionally, the reagent rack further comprises:

[0018] The fixing disc is axially limitedly arranged on the stepped surface opened at the upper part of the hollow cavity, and is fixedly assembled with the first eccentric sleeve through a plurality of screws to clasp and fix the test tube rack body.

[0019] Optionally, the motor is sleeved with an upper motor sleeve, and the lower end of the upper motor sleeve is fixed with the motor support to form a motor cavity accommodating the motor.

[0020] Optionally, the reagent tray is installed on the upper end of the support frame, and the upper part of the reagent tray is formed with a tray groove for accommodating the bottom part of the reagent rack.

[0021] Optionally, a test tube lower limiting disc is installed in the tray groove, and a plurality of test tube bottom grooves corresponding to the positions of the test tube sites are opened in the test tube lower limiting disc.

[0022] In a second aspect, the application provides a mixing instrument, comprising the oscillation driving mechanism of the first aspect and a housing member, and the housing member is provided with a control panel.

[0023] The oscillation driving unit is arranged inside the housing member and electrically connected with the control panel.

[0024] Compared with the related art, the oscillation driving mechanism and the mixing instrument provided by the application have at least the following technical effects:

[0025] The eccentric shaft combines the vibration conduction of the first eccentric sleeve, and the sleeve joint structure of the reagent rack and the first eccentric sleeve, so that the test tube loaded with reagents achieves good mixing effect; on the other hand, the gravity center of the reagent rack is effectively lowered, the vibration stability of the reagent rack is ensured, the overall shaking of the reagent rack and the instrument is reduced, the cumbersome fixing mechanism is not needed, the work efficiency is improved; and the counterweight disc rotates eccentrically with the axis of the eccentric shaft as the rotation center, improves the mixing effect of the mixing device, also plays a balancing role, and optimizes and reduces vibration noise.

[0026] Details of one or more embodiments of the present application are presented in the following drawings and description to make other features, objects and advantages of the present application more apparent. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0028] Figure 1 It is a mixing instrument structure schematic diagram according to an exemplary embodiment.

[0029] Figure 2 It is a structure schematic diagram of an oscillation driving mechanism according to an exemplary embodiment.

[0030] Figure 3 It is a structure cross-sectional view of an oscillation driving mechanism according to an exemplary embodiment.

[0031] Figure 4 It is a structure cross-sectional exploded view of an oscillation driving mechanism according to an exemplary embodiment.

[0032] Explanation of reference numerals: shell 10, control panel 101;

[0033] Reagent rack 20: test tube rack body 201, hollow cavity 202, fixing disc 203, test tube position 204;

[0034] Oscillation driving unit 30: motor 301, motor upper shell sleeve 32, motor support 303, eccentric shaft 304, counterweight disc 305, bearing 306, positioning seat 307, first eccentric sleeve 308, second eccentric sleeve 309, limiting key 310;

[0035] Reagent tray 40, test tube lower limiting disc 401; support frame 50. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the related art, the oscillation center of the reagent rack is higher than the eccentric shaft generating vibration, which will make the reagent rack and the reagent cloth loaded on the reagent rack fixed, and displacement and deviation are easy to occur, so a fixing structure is needed; the existing constant temperature mixing instrument comprises a main machine base, a cover plate is arranged on the upper portion of the main machine base, and the cover plate is positioned and lifted by four limiting rods fixed on the circumference of the main machine base to clamp and fix the reagent rack, but due to the existence of the fixing structure, the reagent loading and taking operation of the mixing instrument is complicated and time-consuming, and is not convenient to use.

[0040] Based on the above situation, the present application provides an oscillation driving mechanism and a mixing instrument, which will be described in detail below in connection with specific embodiments and drawings.

[0041] Embodiment 1

[0042] The present application provides an oscillation driving mechanism. Figure 2 is a structural schematic diagram of the oscillation driving mechanism according to an exemplary embodiment. Figure 3 is a structural sectional view of the oscillation driving mechanism according to an exemplary embodiment. Figure 4is a structure sectional exploded view of an oscillation driving mechanism according to an exemplary embodiment. As shown in Figures 2-4 The oscillation driving mechanism comprises a support frame 50 and a motor assembly hole in the middle of the support frame 50, and further comprises an oscillation driving unit 30 and a reagent rack 20. The oscillation driving unit 30 comprises:

[0043] a motor 301 vertically arranged in the motor assembly hole and fixed to the upper end of a motor support 303;

[0044] an eccentric shaft 304 fixed to the output shaft of the motor 301 at one end and having a bearing 306 assembled at the other end, and the outer side of the bearing 306 is assembled with a positioning seat 307;

[0045] a counterweight disc 305 fixed to the annular outer wall of the eccentric shaft 304;

[0046] a first eccentric sleeve 308 sleeved on the outer side of the eccentric shaft 304 and the motor 301 and fixed to the support frame 50, and a shaft positioning hole adapted to the positioning seat 307 is formed in the middle thereof, wherein the positioning seat 307 is assembled in the shaft positioning hole and fixed by a plurality of screws. Since the rotating force and eccentric vibration force of the eccentric shaft 304 are assembled through the bearing 306, the positioning seat 307 will not rotate, but only the positioning seat 307 and the fixed first eccentric sleeve 308 will vibrate;

[0047] a second eccentric sleeve 309 fixed to the middle of the upper end of the first eccentric sleeve 308 and coaxially arranged with the first eccentric sleeve 308;

[0048] The reagent rack 20 is sleeved on the first eccentric sleeve 308 so that the oscillation center of gravity of the reagent rack 20 is located at the first eccentric sleeve 308 in the middle, and the specific structure of the reagent rack 20 is described with reference to the accompanying drawings. Figures 2-4 The reagent rack 20 comprises: a test tube rack body 201 in the shape of a ring and having a hollow cavity 202 in the middle thereof, sleeved and assembled with the first eccentric sleeve 308; a plurality of test tube positions 204 in the shape of a ring and arranged in an array on the annular side wall of the test tube rack body 201 to clampingly fix test tubes; a plurality of limiting keys 310 vertically arranged on the annular outer wall of the first eccentric sleeve 308 to limit the axial rotation of the reagent rack 20 after assembly; and a fixing disc 203 axially and limitingly arranged on the stepped surface formed in the upper part of the hollow cavity 202, and fixedly assembled with the first eccentric sleeve 308 by a plurality of screws to clampingly fix the test tube rack body 201.

[0049] The specific structure of the reagent rack 20 is described with reference to the accompanying drawings. Figures 1-4In the technical solution of the above embodiment, after the reagent-loaded test tubes are loaded into the test tube sites 204 in sequence, the motor 301 is started, the output shaft of the motor 301 drives the eccentric shaft 304 to rotate, the rotating force and the eccentric vibration force of the eccentric shaft 304 are transmitted through the assembly of the bearing 306, and the positioning seat 307 is not driven to rotate, but only the positioning seat 307 and the fixed first eccentric sleeve 308 are driven to stably vibrate. In combination with the cylindrical structure of the first eccentric sleeve 308, the reagent rack 20 is sleeved on the first eccentric sleeve 308. On the one hand, the vibration conduction can make the reagent-loaded test tubes vibrate to achieve a good mixing effect. On the other hand, the sleeving structure of the reagent rack 20 and the first eccentric sleeve 308 effectively lowers the center of gravity of the reagent rack 20, ensures the stable vibration of the reagent rack 20, and reduces the overall shaking of the reagent rack 20 and the equipment. The counterweight disc 305 performs eccentric rotation with the axis of the eccentric shaft 304 as the rotation center, improves the mixing effect of the mixing device, plays a balancing role, and further reduces the vibration noise.

[0050] Further, the second eccentric sleeve 309 is arranged to fix the reagent rack 20 on the center of the second eccentric sleeve 309 and the first eccentric sleeve 308, increase the vibration conduction effect, and avoid the reagent rack 20 from vibrating off.

[0051] In the embodiment, refer to the accompanying drawings Figure 3 and 4 The motor upper sleeve 302 is sleeved on the motor 301, the lower end of the motor upper sleeve 302 is fixed with the motor support 303 to form a motor cavity accommodating the motor 301, and the motor 301 is located in the motor cavity to effectively fix and protect the motor 301.

[0052] In the embodiment, refer to the accompanying drawings Figures 2-4 Further, the reagent tray 40 is arranged, the reagent tray 40 is installed on the upper end of the support frame 50, and a tray groove for accommodating the bottom of the reagent rack 20 is formed on the upper part of the reagent tray 40. The test tube lower limiting disc 401 is installed in the tray groove, and a plurality of test tube bottom grooves corresponding to the positions of the test tube sites 204 are formed on the test tube lower limiting disc 401.

[0053] In the technical solution of the above embodiment, when the test tube sites 204 are inserted and clamped into the reagent-loaded test tubes, the bottom ends of the test tubes enter the test tube bottom grooves to further limit the test tubes and avoid the test tubes from slipping off and shifting.

[0054] In summary, the oscillation driving mechanism provided by the embodiment of the utility model, through eccentric shaft 304 combination first eccentric sleeve 308 vibration transmission, combined with reagent rack 20 and first eccentric sleeve 308 sleeve joint structure, so that the test tube of loading reagent reaches good mixing effect;On the other hand, effectively move the gravity center of reagent rack 20, ensure the vibration stability of reagent rack 20, thereby reduce the overall shaking of reagent rack 20, without cumbersome fixing mechanism, improve work efficiency;And counterweight disc 305 eccentric rotation with the axis of eccentric shaft 304 as the rotation center, improve the mixing effect of mixing device, also play a balancing role, optimize and reduce vibration noise.

[0055] Embodiment 2

[0056] The utility model embodiment 2 provides a kind of mixing instrument. Figure 1 It is according to the mixing instrument structure schematic diagram shown in an exemplary embodiment.As shown in Figure 1 The mixing instrument, including the oscillation driving mechanism of above-mentioned embodiment 1, and shell piece 10, shell piece 10 is equipped with control panel 101;

[0057] Oscillation driving unit 30 is arranged in the inside of shell piece 10, and it is electrically connected control panel 101, it can be understood that, control panel 101 is built-in single-chip microcontroller or PLC controller to realize oscillation driving unit 30 circuit control.

[0058] Other undescribed structure refers to embodiment 1.

[0059] In summary, the oscillation driving mechanism and mixing instrument provided by the embodiment of the utility model, through eccentric shaft 304 combination first eccentric sleeve 308 vibration transmission, combined with reagent rack 20 and first eccentric sleeve 308 sleeve joint structure, so that the test tube of loading reagent reaches good mixing effect;On the other hand, effectively move the gravity center of reagent rack 20, ensure the vibration stability of reagent rack 20, thereby reduce the overall shaking of reagent rack 20 and instrument, and counterweight disc 305 eccentric rotation with the axis of eccentric shaft 304 as the rotation center, improve the mixing effect of mixing device, also play a balancing role, optimize and reduce vibration noise.

[0060] The technical features of the above-described embodiments can be combined arbitrarily, to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combination of these technical features does not exist contradictory, it should be considered that it is within the scope of the present application.

[0061] The above embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which all belong to the protection scope of the application. Therefore, the protection scope of the patent of the application should be subject to the appended claims.

Claims

1. An oscillation drive mechanism, comprising a support frame and a motor mounting hole formed in the middle of the support frame, characterized in that, It also includes an oscillation drive unit and a reagent rack, the oscillation drive unit comprising: The motor is vertically disposed within the motor mounting hole and fixed to the upper end of the motor bracket; An eccentric shaft, one end of which is fixed to the output shaft of the motor and the other end is fitted with a bearing, and a positioning seat is fitted on the outside of the bearing; A counterweight plate, which is fixed to the annular outer wall of the eccentric shaft; The first eccentric sleeve is sleeved on the outside of the eccentric shaft and the motor and fixed to the support frame. A shaft positioning hole adapted to the positioning seat is opened in the middle. The positioning seat is assembled in the shaft positioning hole and fixedly connected to the first eccentric sleeve. The reagent rack is fitted onto the first eccentric sleeve so that the center of gravity of the reagent rack's oscillation is located at the first eccentric sleeve in the middle.

2. The oscillation driving mechanism as described in claim 1, characterized in that: The oscillation drive unit also includes a second eccentric sleeve, which is fixed to the middle of the upper end of the first eccentric sleeve and is coaxially arranged with the first eccentric sleeve.

3. The oscillation driving mechanism as described in claim 2, characterized in that: The reagent rack includes: The test tube rack is ring-shaped and has a hollow cavity in its middle part that is fitted and assembled with the first eccentric sleeve. The test tube positions, numbering several, are arranged in a ring array on the ring sidewall of the test tube rack to clamp and fix the test tubes.

4. The oscillation driving mechanism as described in claim 3, characterized in that: The first eccentric sleeve has several vertically arranged limiting keys on its annular outer wall to limit the axial rotation of the reagent rack after assembly.

5. The oscillation driving mechanism as described in claim 3, characterized in that: The reagent rack also includes: A fixing plate is axially limited and set on the stepped surface opened at the upper part of the hollow cavity, and is fixedly assembled with the first eccentric sleeve by a number of screws to clamp and fix the test tube rack body.

6. The oscillation driving mechanism as described in claim 1, characterized in that: The motor is fitted with an upper motor housing, and the lower end of the upper motor housing is fixed to the motor bracket to form a motor cavity that accommodates the motor.

7. The oscillation drive mechanism as described in claim 3, characterized in that: It also includes a reagent tray, which is mounted on the upper end of the support frame and has a tray groove formed on its upper part for accommodating the bottom of the reagent rack.

8. The oscillation driving mechanism as described in claim 7, characterized in that: The tray groove is equipped with a test tube lower limit plate, and the test tube lower limit plate has a number of test tube bottom grooves corresponding to the positions of the test tubes.

9. A mixer, characterized in that, It includes the oscillation drive mechanism as described in any one of claims 1-8, and a housing component, wherein the housing component is provided with a control panel; The oscillation drive unit is disposed inside the housing and is electrically connected to the control panel.

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