Flat plate reversing device for laboratory

Abstract

An inverted flat plate device for a laboratory comprises a body with a cavity, an inner container arranged in the body and an opening and closing cover body arranged on the body, a small steam sterilizer is arranged in the body, and the small steam sterilizer sprays steam sterilization gas through a steam outlet; the inner container is connected with an outlet pipe used for outflow of a culture medium, the outlet pipe is provided with an intermittent feeding mechanism used for controlling intermittent outflow of the culture medium, the intermittent feeding mechanism comprises a ball valve and a driving motor, the ball valve is installed on the outlet pipe, and a valve rod of the ball valve is connected with the driving motor used for driving the ball valve to rotate. According to the utility model, the plate pouring process of the solid culture medium is simplified, the pollution in the plate pouring process is also reduced, the volume of the culture medium poured into each culture dish can be accurately controlled, and the uniformity of each solid plate is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to culture medium turns flat board technical equipment field, and specifically is a laboratory turns flat board device. BACKGROUND

[0002] The existing laboratory still adopts the traditional method when turning flat plate in the related microorganism teaching and scientific research, that is, the culture medium after high pressure sterilization is poured into the flat plate culture dish, and the solid culture medium is formed after cooling and solidification. In the traditional flat plate pouring process, there are often too much condensate water or unevenness in the culture dish due to too high or too low temperature of the culture medium when pouring the plate, and there are also phenomena of uneven thickness of the culture medium in the culture dish due to insufficient experience of pouring the plate without mixing the culture medium. In addition, there are problems of easy pollution, time-consuming, waste of manpower, material resources and reagents in the traditional flat plate pouring process, thereby affecting the subsequent experimental results and the whole experimental process.

[0003] In order to solve the above problems, the Chinese patent CN213943169U discloses a laboratory turns flat board device, and specifically discloses that the inner container is located in the cavity, the body is provided with a small steam sterilization device, the cavity is provided with a steam outlet connected with the small steam sterilization device through a steam pipe, the lower end of the inner container is connected with an outlet pipe, and the side surface of the body is provided with a valve plate for plugging the outlet pipe. Although the above technology solves the problems of automatic completion of flat plate pouring, reduction of the probability of culture medium pollution, and reduction of personnel work intensity and danger, when the culture medium needs to be poured into a large number of flat plate culture dishes, personnel need to manually or electrically open or close the valve plate for plugging the outlet pipe, which increases the complexity of the flat plate pouring process. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a laboratory turns flat board device, simplifying the flat plate pouring process of the solid culture medium, reducing the pollution in the flat plate pouring process, and accurately controlling the volume of the culture medium poured into each culture dish.

[0005] In order to solve the above technical problems, the utility model adopts the specific scheme of a laboratory turns flat board device, which comprises a body with a cavity, an inner container arranged in the body, and an opening and closing cover arranged on the body. A small steam sterilizer is arranged in the body, and the small steam sterilizer sprays steam sterilization gas through a steam outlet. The inner container is connected with an outlet pipe for flowing out the culture medium, and the outlet pipe is provided with an intermittent feeding mechanism for controlling the intermittent flow of the culture medium. The intermittent feeding mechanism comprises a ball valve and a driving motor, the ball valve is installed on the outlet pipe, and the valve rod of the ball valve is connected with the driving motor for driving the rotation of the ball valve.

[0006] As another optimization scheme of the above-mentioned laboratory pour plate device, the intermittent feeding mechanism further comprises a plurality of driven gears with different diameters mounted on the valve rod and a plurality of driving gears mounted on the output shaft of the driving motor, the driving gears are capable of meshing with the corresponding driven gears, two adjacent driving gears are connected through a connecting sleeve, a sliding groove is formed on the outer wall of the connecting sleeve along the circumferential direction thereof, a yoke is rotatably mounted in the sliding groove, and the yoke is used to move the connecting sleeve along the axial direction of the output shaft to switch one of the two driving gears to mesh with the corresponding driven gear.

[0007] As another optimization scheme of the above-mentioned laboratory pour plate device, two driving gears are arranged on the output shaft of the driving motor, and two driven gears are arranged on the valve rod.

[0008] As another optimization scheme of the above-mentioned laboratory pour plate device, a mounting sleeve is detachably mounted on the valve rod, and the two driven gears are fixed on the mounting sleeve.

[0009] As another optimization scheme of the above-mentioned laboratory pour plate device, a mounting box is arranged on the outer periphery of the driving motor and the valve rod.

[0010] As another optimization scheme of the above-mentioned laboratory pour plate device, the driving motor is fixed in the mounting box through a mounting bracket, and a bearing seat for bearing the rotation of the output shaft is arranged in the mounting box.

[0011] As another optimization scheme of the above-mentioned laboratory pour plate device, a strip-shaped through slot is formed in the top of the mounting box, and the upper end of the yoke can pass through the through slot and slide along the axial direction of the output shaft.

[0012] As another optimization scheme of the above-mentioned laboratory pour plate device, a through hole is formed in the side wall of the mounting box for the valve rod to pass through, and a bearing for the rotation of the valve rod is mounted in the through hole.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1、The inner container is arranged in the body, and the steam outlet in the body can spray steam to reduce the probability of contamination of the culture medium. The outlet pipe arranged on the inner container is used for flowing out the culture medium, the ball valve is mounted on the outlet pipe, the valve rod of the ball valve is connected with the driving motor for driving the rotation of the valve rod, and the culture medium can be intermittently discharged into the plate culture dish. Compared with the existing method of repeatedly opening and closing the valve plate, the intermittent flow of the culture medium can give the experimental personnel enough time to take away the plate culture dish filled with the culture medium and replace a new plate culture dish, and the operation is simple and convenient.

[0015] 2、The utility model discloses a different diameter driven gear arranged on the valve stem of the ball valve can be engaged with the corresponding driving gear arranged on the output shaft of the driving motor, and the adjacent two driving gears are connected through the connecting sleeve, and the connecting sleeve can be moved along the output shaft in the axial direction by pulling the yoke rotatingly arranged in the connecting sleeve sliding groove, so that the engagement of one of the driving gears with the corresponding driven gear is changed to change the rotating speed of the valve stem, and the amount of the culture medium flowing out of the outlet pipe is adjusted according to the amount of the culture medium required in the plate culture dish of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic view of the ball valve installed on the outlet pipe in example 1.

[0017] Figure 2 It is the structural schematic view when the large-diameter driving gear and the corresponding small-diameter driven gear are engaged in example 2.

[0018] Figure 3 It is the structural schematic view when the small-diameter driving gear and the large-diameter driven gear are engaged after the yoke is pulled in example 2.

[0019] The figure sign: 1, the body, 101, open and close cover, 2, the inner container, 201, the outlet pipe, 3, intermittent feeding mechanism, 301, ball valve, 302, valve stem, 3021, driven gear, 303, driving motor, 3031, output shaft, 3032, driving gear, 304, yoke, 305, connecting sleeve, 3051, sliding groove, 306, bearing seat, 4, mounting box, 5, small steam sterilizer. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be further described in detail in combination with specific embodiments, and the parts not described in detail in the following embodiments of the utility model, such as the specifications and models of the driving motor, the specifications and models and structure of the ball valve and the structure of the yoke, should be the prior art known or known by the person skilled in the art.

[0021] Example 1

[0022] As shown in the drawing, Figure 1 A laboratory plate pouring device, comprising a body 1 with a cavity, an inner container 2, a small steam sterilizer 5 and an intermittent feeding mechanism 3, the upper end of the body 1 is an opening, and a side of the opening is hingedly installed with an open and close cover 101, which can prevent the inner cavity of the body 1 from being polluted by external dust when the device is used.

[0023] The inner container 2 is arranged in the inner cavity of the body 1 for containing liquid medium, the shape of the inner container 2 is a cylindrical structure with an open upper end, the lower end of the inner container 2 is placed in the body 1 through the mounting concave seat, and a strip-shaped magnet is arranged at the bottom of the inner container 2. A magnetic stirrer for driving the strip-shaped magnet to rotate and stir the medium is arranged in the mounting concave seat at the bottom of the inner container, so that the medium can be uniformly mixed before pouring the plate, and the situation that the medium in the culture dish is not uniform in thickness can be avoided.

[0024] The small steam sterilizer 5 is arranged on one side of the inner container 2 in the body 1, and a gas conveying pipe is communicated with the small steam sterilizer 5. The gas conveying pipe is fixed on the inner side wall of the body 1 through a fixing rack and is coiled. The gas conveying pipe is located outside the inner container 2. A plurality of steam outlets are arranged on the side wall of the gas conveying pipe facing the inner container 2 along the length direction of the gas conveying pipe. The steam sterilization gas in the gas conveying pipe is sprayed out through the steam outlets, so that the inner cavity of the body 1 can be sterilized, thereby avoiding the situation that the liquid medium in the inner cavity of the body 1 is polluted by pollutants.

[0025] A control unit (not shown in the figure) is arranged outside the body 1, the control unit is electrically connected with the electromagnetic stirrer and the small steam sterilizer 5, and a rotating button for controlling the opening and closing of the electromagnetic stirrer and a steam button for controlling the opening and closing of the small steam sterilizer 5 are arranged on the panel of the control unit. A temperature sensor is arranged in the cavity of the body 1, the temperature sensor is electrically connected with the control unit, and a temperature display screen for directly displaying the temperature in the inner cavity is further arranged on the panel of the control unit.

[0026] An outlet pipe 201 for outputting the liquid medium into a plate culture dish is communicated with the outer side wall of the inner container 2 close to the lower end of the inner container 2. A through hole is formed on the side wall of the body 1 corresponding to the position of the outlet pipe 201, and the end of the outlet pipe 201 away from the inner container 2 can pass through the through hole and be arranged outside the body 1. In addition, a sealing ring is arranged between the through hole and the wall of the outlet pipe 201, so that the pollutants or contaminated gas in the outside environment cannot enter the inner cavity of the body 1 through the through hole.

[0027] The outlet pipe 201 is provided with an intermittent feeding mechanism 3 for controlling the intermittent flow of the medium, and the intermittent feeding mechanism 3 comprises a ball valve 301 and a driving motor 303. The ball valve 301 is arranged in the middle of the outlet pipe 201, and the valve body of the ball valve 301 is fixedly connected with the outlet pipe 201 on the corresponding side.

[0028] A mounting box 4 is mounted on the body 1 at one side of the outlet pipe 201, and is fixedly connected between the bottom side plate of the mounting box 4 and the bottom of the body 1 by bolts. The driving motor 303 is fixed in the mounting box 4 by a mounting frame, and a bearing seat 306 for bearing and rotating the output shaft 3031 of the driving motor 303 is arranged at the end of the output shaft 3031 of the driving motor 303 in the mounting box 4. The driving motor 303 is electrically connected with the control unit, and a switch button for controlling the opening and closing of the driving motor 303 is arranged on the panel of the control unit.

[0029] A through hole is formed in the side wall of the mounting box 4 for the valve rod 302 to pass into the mounting box 4, and a bearing for rotating the valve rod 302 is arranged in the through hole. The valve rod 302 of the ball valve 301 is arranged in parallel with the output shaft 3031 of the driving motor 303. A gear is mounted on the valve rod 302, and a gear is mounted on the output shaft 3031 of the driving motor 303. The driving motor 303 can drive the valve rod 302 to rotate through the meshing cooperation between the two gears. With the rotation of the valve rod 302, the valve ball in the ball valve 301 rotates with the rotation of the valve rod 302, so that the channel arranged through the valve ball rotates with the rotation of the valve ball. When the valve ball is rotated to the position that the channel thereof is communicated with the outlet pipe 201, the culture medium can flow out through the communicated channel and the outlet pipe, and when the valve ball is rotated to the position that the channel thereof is not communicated with the outlet pipe 201, the culture medium cannot flow out. The intermittent flow of the culture medium from the outlet pipe 201 gives the test personnel enough time to replace new flat plate culture dishes.

[0030] Embodiment 2

[0031] The subject structure of this embodiment is similar to that of Embodiment 1, and the main difference is that, as shown in Figures 2-3 two driven gears 3021 of different diameters are arranged on the valve rod 302, and the diameters of the two driven gears 3021 increase from inside to outside. The left gear near the outlet pipe 201 is a small-diameter driven gear 3021, and the right gear is a large-diameter driven gear 3021. Two driving gears 3032 for meshing with the corresponding driven gears 3021 are arranged on the output shaft 3031 of the driving motor 303. The left gear near the outlet pipe 201 is a large-diameter driving gear 3032, and the right gear is a small-diameter driving gear 3032 capable of meshing with the large-diameter driven gear 3021.

[0032] The two driving gears 3032 are connected by the connecting sleeve 305, and the two driving gears 3032 can move along with the connecting sleeve 305 to move along the axial direction of the output shaft 3031. A sliding groove 3051 is formed on the outer wall of the middle part of the connecting sleeve 305 along the circumferential direction thereof, and a yoke 304 is rotatably and slidingly fitted in the sliding groove 3051. The yoke 304 has a Y-shaped structure, and the two side edges of the yoke 304 are arc-shaped and adapted to the outer side wall of the connecting sleeve 305. A sliding ball is arranged on each of the two side edges of the yoke 304 to pass into the sliding groove 3051, so that the yoke 304 does not rotate when the connecting sleeve 305 rotates along with the output shaft 3031.

[0033] A strip-shaped through slot is formed in the top of the mounting box 4 corresponding to the moving position of the connecting sleeve 305, and the upper end of the yoke 304 passes through and slidingly fits in the strip-shaped through slot. In use, the upper end of the yoke 304 is pulled, and the corresponding connecting sleeve 305 moves along the axial direction of the output shaft 3031 along with the two driving gears 3032, so that the driving gears 3032 and the driven gears 3021 that are originally meshed are separated, and the other driving gear 3032 meshes with the corresponding driven gear 3021.

[0034] After the meshing switching of the driving gears 3032 and the driven gears 3021 is completed, the rotation speed of the corresponding valve rod 302 changes. If the rotation speed of the valve rod 302 increases, the amount of culture medium flowing out of the outlet pipe 201 decreases. If the rotation speed of the valve rod 302 decreases, the amount of culture medium flowing out of the outlet pipe 201 increases. Therefore, the device can adjust the amount of culture medium flowing out of the outlet pipe 201 according to the amount of culture medium required in different sizes of plate culture dishes, thereby improving the application range.

[0035] Embodiment 3

[0036] The main structure of this embodiment is similar to that of embodiment 1, and the main difference lies in that a mounting sleeve is detachably clamped on the valve rod 302, and the gears are mounted on the mounting sleeve. Four clamping strips are arranged on the inner side wall of the mounting sleeve along the length direction thereof, and the four clamping strips are uniformly and spacedly arranged along the circumferential direction of the inner side wall of the mounting sleeve. Corresponding clamping grooves are formed on the outer side wall of the valve rod 302 for sliding fitting of the clamping strips, so that the mounting sleeve can be detached from the valve rod 302 when the inner container 2 of different specifications and sizes is replaced, so as to be repeatedly used and save cost.

Claims

1. A laboratory inverted flat plate device, comprising a body (1) having a cavity, a liner (2) arranged in the body (1), and an openable and closable cover (101) arranged on the body (1), wherein a small steam sterilizer (5) is arranged in the body (1), the small steam sterilizer (5) sprays steam sterilization gas through a steam outlet; the liner (2) is connected with an outlet pipe (201) for flowing out of the culture medium, characterized in that: The outlet pipe (201) is provided with an intermittent feeding mechanism (3) for controlling intermittent outflow of the culture medium, the intermittent feeding mechanism (3) comprising a ball valve (301) and a driving motor (303), wherein the ball valve (301) is installed on the outlet pipe (201), and the valve rod (302) of the ball valve (301) is connected with the driving motor (303) for driving the ball valve (301) to rotate. ​ 2. A laboratory inverted plate apparatus according to claim 1, wherein: The intermittent feeding mechanism (3) further comprises a plurality of driven gears (3021) with different diameters installed on the valve rod (302) and a plurality of driving gears (3032) installed on the output shaft (3031) of the driving motor (303), the driving gears (3032) can be engaged with the corresponding driven gears (3021), and the adjacent two driving gears (3032) are connected through a connecting sleeve (305), the outer wall of the connecting sleeve (305) is provided with a sliding groove (3051) along the circumferential direction thereof, and the sliding groove (3051) is rotatably fitted with a yoke (304), the yoke (304) is used for driving the connecting sleeve (305) to move along the axial direction of the output shaft (3031) to selectively engage one of the two driving gears (3032) with the corresponding driven gear (3021).

3. A laboratory inverted plate apparatus according to claim 2, wherein: The output shaft (3031) of the driving motor (303) is provided with two driving gears (3032), and the valve rod (302) is provided with two driven gears (3021).

4. A laboratory inverted plate apparatus according to claim 3, wherein: The valve rod (302) is detachably clamped with a mounting sleeve, and the two driven gears (3021) are fixed on the mounting sleeve.

5. A laboratory inverted plate apparatus as claimed in claim 1, wherein: The driving motor (303) and the valve rod (302) are provided with a mounting box (4).

6. A laboratory inverted plate apparatus according to claim 5, wherein: The driving motor (303) is fixed in the mounting box (4) through a mounting frame, and the mounting box (4) is provided with a bearing seat (306) for bearing the rotation of the output shaft (3031).

7. A laboratory inverted plate apparatus as claimed in claim 5, wherein: The mounting box (4) is provided with a strip-shaped through slot at the top thereof, the upper end of the yoke (304) passes through the strip-shaped through slot and slides along the axial direction of the output shaft (3031).

8. A laboratory inverted plate apparatus as claimed in claim 5, wherein: The side wall of the mounting box (4) is provided with a through hole for the valve rod (302) to pass through, and the through hole is provided with a bearing for the rotation of the valve rod (302).

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