Reagent mixing device

Abstract

The utility model discloses a reagent mixing device which comprises a machine table, a synchronous belt driving unit, a gear rack unit and a mixing unit, a sliding rail is arranged on the machine table and provided with a sliding plate. The uniform mixing unit is arranged on the sliding plate; the synchronous belt driving unit comprises a motor, a synchronous belt wheel and a synchronous belt; the motor can drive the synchronizing wheel to rotate; the motor and the synchronous belt wheels are installed on the machine table, and the synchronous belt is arranged on the two synchronous belt wheels. The side part of the sliding plate is fixed on the synchronous belt; the motor can drive the sliding plate to linearly move back and forth along the sliding rail through the synchronous wheel and the synchronous belt; the uniform mixing unit comprises a uniform mixing unit gear and a clamping sleeve; a second rotating shaft of the uniform mixing unit gear is arranged on the sliding plate; a cavity is formed in the middle of the uniform mixing unit gear; an eccentric hole for accommodating the reaction cup is formed in the clamping sleeve; the gear rack unit comprises a rack and a driving gear; the rack is fixed to the machine table and is parallel to the sliding rail. A first rotating shaft of the driving gear is arranged on the sliding plate; the rack is meshed with the driving gear, and the driving gear is meshed with the uniform mixing gear. The reagent mixing device is compact in structure and good in mixing effect.

Description

Technical Field

[0001] The utility model relates to a reagent mixing device. Background Art

[0002] At present, the mixing methods on the market mainly include contact mixing and non-contact mixing. Since contact mixing has cross contamination, non-contact mixing is mainly used. Non-contact mixing is generally mechanical mixing. Eccentric rotation mixing is one of the mechanical mixing methods, which uses a motor to drive the eccentric mechanism to rotate. Although this mode has a simple structure, it cannot guarantee the mixing effect, and if the reaction cup vibrates greatly, it is easy to cause the liquid in the cup to splash.

[0003] Patent publication number 112156747B discloses a reaction cup and a reaction cup mixing device; the device is provided with a plurality of mounting slots for mounting reaction cups on a rotating disk; the mixing device can achieve mixing of a plurality of reaction cups, but the structure is relatively complex.

[0004] In addition, the patent with publication number 117990477A discloses a mixing device, the core of which is that the inclination of the reaction cup can be adjusted by an inclined surface, and the structure is also relatively complex.

[0005] Therefore, it is necessary to design a new type of reagent mixing device. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a reagent mixing device, which has a novel and compact structure and can perform a mixing action.

[0007] The technical solution of the utility model is as follows:

[0008] A reagent mixing device comprises a machine platform, a synchronous belt driving unit, a gear rack unit and a mixing unit;

[0009] The machine platform is provided with a slide rail, and a slide plate is provided on the slide rail; the mixing unit is arranged on the slide plate;

[0010] The synchronous belt drive unit includes a motor, a synchronous pulley and a synchronous belt; there are two synchronous pulleys, the motor is coaxially arranged with one of the synchronous pulleys, and the motor can drive the synchronous pulley to rotate; the motor and the synchronous pulley are both installed on the machine platform, and the synchronous belt is arranged on the two synchronous pulleys; the side of the slide plate is fixed on the synchronous belt; the motor can drive the slide plate to make a straight line reciprocating motion along the slide rail through the synchronous pulley and the synchronous belt;

[0011] The mixing unit comprises a mixing unit gear and a ferrule; the second rotating shaft of the mixing unit gear is arranged on the slide; the middle part of the mixing unit gear has a cavity, and the ferrule has an eccentric hole for accommodating a reaction cup;

[0012] The rack and pinion unit comprises a rack and a driving gear; the rack is fixed on the machine platform and is arranged parallel to the slide rail; the first rotating shaft of the driving gear is arranged on the slide plate; the rack is meshed with the driving gear, and the driving gear is meshed with the mixing gear.

[0013] The gear rack unit is provided with a cover sheet for covering the reaction cup.

[0014] The driving gear is connected to the first rotating shaft through a one-way bearing.

[0015] A pressing sheet is provided on the ferrule.

[0016] Beneficial effects:

[0017] The reagent mixing device of the utility model increases the mixing mode and increases the horizontal movement during the rotating mixing process to improve the mixing effect. During the mixing process, the reaction cup is covered by a mask to prevent liquid splashing. The structure is compact and the assembly space requirement is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the reagent mixing device (stereoscopic diagram);

[0019] Figure 2 It is a schematic diagram of the overall structure of the reagent mixing device (top view);

[0020] Figure 3 yes Figure 2 Cross-section in the EE direction;

[0021] Figure 4 This is an exploded view of the drive unit;

[0022] Figure 5 is a cross-sectional view of the drive unit;

[0023] Figure 6 is the cross-sectional view of the mixing unit;

[0024] Figure 7 It is the exploded diagram of the mixing unit;

[0025] Figure 8 It is a schematic diagram of the device operation status (starting point);

[0026] Fig. 9 It is a schematic diagram of the device operation status (closed point position);

[0027] Fig.10 It is a schematic diagram of the device operation status (end point);

[0028] Fig.11 This is a schematic diagram of the device's operating status (opening position);

[0029] Fig.12 Schematic diagram of the device operating status (reset process).

[0030] Explanation of the numbers: 1-limiting nut, 2-shield, 3-connecting block, 4-one-way bearing, 5-first rotating shaft, 6-one-way bearing outer key, 7-driving gear, 8-one-way bearing inner key, 9-bearing gasket; 11-rack, 12-leg, 13-slide plate, 14-machine table, 15-motor, 16-slide rail, 17-synchronous belt; 21-reaction cup, 22-second rotating shaft, 23-ferrule, 24-mixing unit gear, 25-pressing sheet, 26-first origin, 27-second origin. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] Example 1: Figure 1-7 , a reagent mixing device, comprising a machine 14, a synchronous belt driving unit, a gear rack unit and a mixing unit;

[0033] The machine platform is provided with a slide rail 16, on which a slide plate 13 is provided; the mixing unit is provided on the slide plate;

[0034] The synchronous belt drive unit includes a motor 15, a synchronous pulley and a synchronous belt 17; there are two synchronous pulleys, the motor is coaxially arranged with one of the synchronous pulleys, and the motor can drive the synchronous pulley to rotate; the motor and the synchronous pulley are both installed on the machine platform, and the synchronous belt is arranged on the two synchronous pulleys; the side of the slide plate is fixed on the synchronous belt;

[0035] The motor can drive the slide plate to make a straight line reciprocating motion along the slide rail through the synchronous wheel and synchronous belt;

[0036] The mixing unit includes a mixing unit gear 24 and a ferrule 23; the second rotating shaft 22 of the mixing unit gear is arranged on the slide; the middle part of the mixing unit gear has a cavity, and the ferrule has an eccentric hole for accommodating the reaction cup 21;

[0037] The rack and pinion unit comprises a rack 11 and a driving gear 7; the rack is fixed on the machine platform and is arranged parallel to the slide rail; the first rotating shaft 5 of the driving gear is arranged on the slide plate; the rack is meshed with the driving gear, and the driving gear is meshed with the mixing gear.

[0038] The gear rack unit is provided with a cover sheet 2 for covering the reaction cup.

[0039] The driving gear is connected to the first rotating shaft through a one-way bearing (4). A pressing sheet 25 is provided on the ferrule.

[0040] Working process description: The driving gear is installed on the slide. The driving gear rotates by the left and right movement of the slide and the cooperation with the rack, thereby driving the rotation of the mixing unit to realize the mixing function as a whole.

[0041] The driving unit includes a limit nut 1, a cover 2, a connecting block 3, a one-way bearing 4, a first rotating shaft 5, a one-way bearing outer key 6, a driving gear 7, a one-way bearing inner key 8 and a bearing gasket 9. With the cooperation of the synchronous belt and the rack unit, the driving gear rotates counterclockwise. The only moving parts of the entire driving unit are the driving gear 7, the outer ring of the one-way bearing 4 and the one-way bearing outer key 6. During the movement, the cover 2 always covers the reaction cup to prevent the liquid in the reaction cup from splashing out. During the resetting process of the linear motion unit, the driving gear 7 rotates clockwise, because the one-way bearing can only rotate in one direction and is locked in the other direction. At this time, the driving gear 7, the outer key 6, the one-way bearing 4, the inner key 8 and the first rotating shaft 5 rotate simultaneously.

[0042] For the specific working process, see Figure 8-12 .

[0043] The mask is installed on the mounting block 3. The workflow can be divided into 6 key points according to the back and forth movement of the slider, which are the first origin, closing point, starting point, opening point, end point, and second origin from left to right. The first origin and the second origin are the inductive photocoupler points, which are also the mechanical limit points. The starting point is the cup placement position. At this time, the mask is opened in the direction of movement. After the cup is placed, the slider moves to the left. At this time, the gear rotates clockwise, and the gear drives the one-way bearing. The one-way bearing is in a locked state and the key on the inner ring of the bearing drives the entire drive unit to rotate clockwise. When the rotation position satisfies the mask just covering the cup body, it stops (i.e., rotates 90° clockwise). This position is called the closing point; then the slider moves to the right to the end point, which is the working state. The one-way gear rotates counterclockwise throughout the process and is in a free state, and the mask always covers the cup body. After reaching the end position, the slider moves to the left, and the drive unit rotates clockwise until the mask does not affect the removal of the cup body and then stops. This is the opening point, and the cup body can be removed. This is the entire workflow; the process from the opening point to the starting point is the reset process, during which the drive unit rotates clockwise throughout the process and stops at the starting point. After stopping, the mask position should coincide with the initial position. Complete one action cycle.

[0044] The first origin is the inductive optocoupler point, which is also the mechanical limit point. The second origin is the mechanical limit point.

[0045] See also Figure 8 The starting point is the cup body placement position, at which time the mask is opened toward the direction of movement.

[0046] See also Fig. 9 , Closing point description: After the cup body is placed, the slider moves to the left, at this time the gear rotates clockwise, the gear drives the one-way bearing, the one-way bearing is in a locked state and the key on the inner ring of the bearing drives the entire drive unit to rotate clockwise. When the rotation position satisfies the mask just covering the cup body, it stops (i.e. rotates 90° clockwise), this position is called the closing point.

[0047] See also Fig.10 , End position description: Then the slider moves to the right to the end position, which is the working state. The one-way bearing rotates counterclockwise throughout the process and is in a free state, and the mask always covers the cup body.

[0048] See also Fig.11 , Open point description: After reaching the end position, the slider moves to the left, and the drive unit rotates clockwise until the mask does not affect the removal of the cup body and then stops. This is the open point and the cup body can be removed. This is the entire workflow

[0049] See also Fig.12 , Reset process: The process from the opening point to the starting point is the reset process, during which the drive unit rotates clockwise throughout the process.

[0050] The mixing unit gear 24 is driven to rotate by the driving unit, and the mixing unit gear is installed on the second rotating shaft 22, and the second rotating shaft 22 rotates on the slide. The reaction cup 21 is loaded on the rubber sleeve 23, and the pressing piece 25 presses the sleeve to prevent it from jumping out during movement. The sleeve adopts an eccentric design to realize the eccentric rotation of the reaction cup, and it is replaceable, which can meet the requirements of reaction cups of different sizes and different eccentric distances.

[0051] Features of this program:

[0052] 1. The reaction cup is covered by a one-way bearing during the forward motion to prevent liquid from splashing out. During the return process, the cover and the reaction cup are not coordinated, which makes it convenient to take and put the reaction cup.

[0053] 2. Eccentric rotation + linear motion mixing to improve mixing effect.

[0054] 3. The rubber ferrule is detachable to meet the requirements under different conditions.

[0055] Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model should be included in the protection scope of this utility model.

Claims

1. A reagent mixing device, characterized in that: It includes a machine platform (14), a synchronous belt drive unit, a gear rack unit and a mixing unit; A slide rail (16) is provided on the machine platform, and a slide plate (13) is provided on the slide rail; and a mixing unit is arranged on the slide plate; The synchronous belt drive unit comprises a motor (15), a synchronous belt pulley and a synchronous belt (17); there are two synchronous belt pulleys, the motor is coaxially arranged with one of the synchronous wheels, and the motor can drive the synchronous wheel to rotate; the motor and the synchronous belt pulley are both installed on the machine platform, and the synchronous belt is arranged on the two synchronous belt pulleys; the side of the slide plate is fixed on the synchronous belt; the motor can drive the slide plate to make a linear reciprocating motion along the slide rail through the synchronous wheel and the synchronous belt; The mixing unit comprises a mixing unit gear (24) and a ferrule (23); the second rotating shaft (22) of the mixing unit gear is arranged on the slide; the middle part of the mixing unit gear has a cavity, and the ferrule has an eccentric hole for accommodating a reaction cup (21); The rack and gear unit comprises a rack (11) and a driving gear (7); the rack is fixed on the machine platform and is arranged parallel to the slide rail; the first rotating shaft (5) of the driving gear is arranged on the slide plate; the rack is meshed with the driving gear, and the driving gear is meshed with the mixing gear.

2. The reagent mixing device according to claim 1, characterized in that: The gear rack unit is provided with a cover sheet (2) for covering the reaction cup.

3. The reagent mixing device according to claim 1, characterized in that: The driving gear is connected to the first rotating shaft via a one-way bearing (4).

4. The reagent mixing device according to any one of claims 1 to 3, characterized in that: A pressing sheet (25) is provided on the ferrule.

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