Automatic plate washing machine

Abstract

The utility model relates to an automatic plate washing machine which comprises a machine box, a liftable plate washing head and a tray capable of horizontally and transversely moving, the plate washing head and the tray are arranged outside the machine box, the plate washing head is located above the tray all the time, and a liquid suction needle and a liquid adding needle are arranged below the plate washing head. The tray is provided with a cleaning tank and a plate carrying tank for placing a microplate, a liquid collecting pool is arranged below the plate carrying tank, a drainage inclined plane is arranged between the cleaning tank and the plate carrying tank, and a notch is formed in one side, close to the drainage inclined plane, of the plate carrying tank. The device is compact in structure, the liquid inlet pipe is provided with the diaphragm pump and the pinch valve, the flow of cleaning liquid is controlled, liquid is added into the cleaning tank, and therefore the immersed liquid suction needle is cleaned, the cleaning tank is provided with the overflow drainage inclined face, and the microwell plate is suspended on the liquid collecting pool. The notch formed in the side, close to the drainage inclined plane, of the liquid collection pool can effectively prevent waste liquid from cross infection on the microwell plate, meanwhile, the waste liquid is prevented from damaging equipment, and the waste liquid is discharged through the waste liquid drainage pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an automatic plate washing machine. Background Art

[0002] The plate washer is a clinical testing device used to clean microporous reaction plates. It is mainly used to clean some unbound substances and impurities after the reaction of the microporous reaction plate, and reduce the error caused by the residue in the subsequent detection process. For example, when performing platelet testing, it is necessary to separate the supernatant of the microplate after the centrifugal reaction. In order to ensure the cleanliness of the aspiration needle, the aspiration needle needs to be cleaned to avoid cross infection.

[0003] Traditional microplate washers often have the following problems: they are large in size, and the cleaning of microplates is not comprehensive enough. At the same time, it is difficult to handle waste liquid, which can easily cause waste liquid to damage the machine. Summary of the invention

[0004] The utility model aims to overcome the above-mentioned shortcomings and provides an automatic plate washer with a compact structure. A diaphragm pump and a clamping valve are arranged on the liquid inlet pipe to control the flow of the cleaning liquid and add liquid to the cleaning tank, thereby cleaning the immersed aspiration needle. The cleaning tank is provided with an overflow drainage slope, the microplate is suspended on the liquid collecting tank, and a notch is arranged on one side of the liquid collecting tank close to the drainage slope to effectively prevent the waste liquid from cross-infecting the microplate and at the same time preventing the waste liquid from damaging the equipment. The waste liquid is discharged through the waste liquid drain pipe.

[0005] The purpose of the utility model is achieved in this way:

[0006] An automatic plate washer comprises a chassis, a liftable plate washer head and a tray which can be moved horizontally. The plate washer head and the tray are arranged outside the chassis, and the plate washer head is always located above the tray. A liquid aspiration needle and a liquid adding needle are arranged below the plate washer head. The tray is provided with a cleaning groove and a plate carrier groove for placing a microplate. A liquid collecting pool is arranged below the plate carrier groove. A drainage slope is arranged between the cleaning groove and the plate carrier groove. A notch is arranged on one side of the plate carrier groove close to the drainage slope.

[0007] Preferably, the plate washing head is provided with a liquid suction channel corresponding to the liquid suction needle, the plate washing head is provided with a liquid adding channel corresponding to the liquid adding needle, the liquid suction channel is connected to the liquid discharge pipe, the liquid adding channel is connected to the liquid inlet pipe, and a diaphragm pump and a tube clamping valve are provided on the mounting bottom plate of the chassis corresponding to the liquid inlet pipe.

[0008] Preferably, when the cleaning water in the cleaning tank is full, it flows directly into the liquid collecting pool along the drainage slope through the notch. An overflow port is provided on the side of the liquid collecting pool, and the overflow port is connected to the waste liquid drain pipe.

[0009] Preferably, the aspiration needles and the addition needles are arrayed in 2 rows, with 8 needles in each row, and the array spacing matches the hole spacing of the microplate.

[0010] Preferably, the length of the aspiration needle is greater than that of the addition needle.

[0011] Preferably, the cover shell of the chassis is provided with through holes corresponding to the lifting bracket, the pressure plate seat, the liquid inlet pipe and the liquid discharge pipe.

[0012] The beneficial effects of the utility model are:

[0013] The liquid inlet pipe is provided with a diaphragm pump and a pinch valve to control the flow of the cleaning liquid and add liquid to the cleaning tank, thereby cleaning the immersed liquid aspiration needle;

[0014] Except for the plate washing head and the tray which are arranged outside the box, the other parts are integrated inside the box, which reduces the size of the plate washing machine.

[0015] The cleaning tank is provided with an overflow drainage slope, the microporous plate is suspended above the liquid collecting pool, and the notch provided on the side of the liquid collecting pool close to the drainage slope can effectively prevent the waste liquid from cross-infecting the microporous plate and at the same time prevent the waste liquid from damaging the equipment. The waste liquid is discharged through the waste liquid drain pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the assembly structure of the utility model.

[0018] Figure 3 Schematic diagram of the distribution of the aspiration needle and the liquid addition needle at the bottom of the plate washing head.

[0019] Figure 4 A three-dimensional structural diagram of a pallet.

[0020] Figure 5 Another three-dimensional structural schematic diagram of the pallet.

[0021] Among them: chassis 1; cover 1.1; plate washing head 2; tray 3; cleaning tank 3.1; plate carrying tank 3.2; liquid collecting pool 3.3; drainage slope 3.4; notch 3.5; overflow port 3.6; lifting bracket 4; pressing plate seat 5; rotating motor 6; liquid suction needle 7; liquid adding needle 8; liquid discharge pipe 9; liquid inlet pipe 10; diaphragm pump 11; clamping valve 12; waste liquid drain pipe 13. Implementation

[0022] See also Figure 1-5The utility model relates to an automatic plate washing machine, comprising a chassis 1, a plate washing head 2 which can be lifted and lowered, and a tray 3 which can be moved horizontally and laterally. The plate washing head 2 and the tray 3 are arranged outside the chassis 1, and the plate washing head 2 is always located above the tray 3. The plate washing head 2 is fixed on a lifting bracket 4, and the lifting bracket 4 is driven to move up and down by a screw stepper motor. The screw stepper motor is fixed on the mounting bottom plate of the chassis 1, and the tray 3 is fixed on a pressure plate seat 5, and the pressure plate seat 5 is The synchronous belt drives the horizontal movement, and the synchronous belt is wound on a synchronous wheel, and a synchronous wheel is connected to a rotating motor 6. A liquid suction needle 7 and a liquid adding needle 8 are provided under the plate washing head 2. The plate washing head 2 is provided with a liquid suction channel corresponding to the liquid suction needle 7, and the plate washing head 2 is provided with a liquid adding channel corresponding to the liquid adding needle 8. The liquid suction channel is connected to a liquid discharge pipe 9, and the liquid adding channel is connected to a liquid inlet pipe 10. A diaphragm pump 11 and a clamping valve 12 are provided on the mounting bottom plate of the chassis 1 corresponding to the liquid inlet pipe 10 to control the flow rate of the cleaning liquid.

[0023] The cover 1.1 of the chassis 1 is provided with through holes corresponding to the lifting bracket 4, the pressure plate seat 5, the liquid inlet pipe 10 and the liquid discharge pipe 11.

[0024] The tray 3 is provided with a cleaning groove 3.1 and a plate carrier groove 3.2. The plate carrier groove 3.2 is used to place a microplate. A liquid collecting pool 3.3 is provided below the plate carrier groove 3.2. A drainage slope 3.4 is passed between the cleaning groove 3.1 and the plate carrier groove 3.2. A notch 3.5 is provided on the side of the plate carrier groove 3.2 close to the drainage slope 3.4. When the cleaning water in the cleaning groove 3.1 is full, the cleaning water directly enters the liquid collecting pool 3.3 along the drainage slope 3.4 through the notch 3.5. An overflow port 3.6 is provided on the side of the liquid collecting pool 3.3. The overflow port 3.6 is connected to the waste liquid drain pipe 13.

[0025] The microplate is suspended on the liquid collecting pool 3.3, and the notch 3.5 provided on one side of the liquid collecting pool 3.3 close to the drainage slope 3.4 can effectively prevent the waste liquid from cross-infecting the microplate.

[0026] The liquid aspiration needles 7 and liquid addition needles 8 are arranged in two rows in an array, with eight needles in each row, and the array spacing matches the hole spacing of the microplate.

[0027] The length of the liquid aspiration needle 7 is greater than that of the liquid adding needle 8, so that the liquid adding needle can be easily cleaned.

[0028] Working principle of plate washer:

[0029] The aspiration needle 7 absorbs the supernatant on the microplate. After the absorption is completed, the tray 3 is moved horizontally, and the cleaning tank 3.1 of the tray 3 is moved to just below the plate washing head 2. The liquid adding needle 8 injects cleaning liquid into the cleaning tank 3.1, and the plate washing head 2 is raised and lowered to immerse the aspiration needle 7 in the cleaning tank 3.1 for cleaning. When the cleaning waste liquid reaches the drainage slope 3.4, the cleaning waste liquid overflows into the liquid collecting pool 3.3 and is discharged from the tray 3 through the overflow port.

[0030] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. An automatic plate washer, comprising a chassis, a liftable plate washer head and a tray that can move horizontally, wherein the plate washer head and the tray are arranged outside the chassis, and the plate washer head is always located above the tray, characterized in that: A liquid aspiration needle and a liquid addition needle are provided below the plate washing head, the tray is provided with a cleaning groove and a plate carrier groove for placing the microplate, a liquid collecting pool is provided below the plate carrier groove, a drainage slope is provided between the cleaning groove and the plate carrier groove, and a notch is provided on one side of the plate carrier groove close to the drainage slope.

2. The automatic plate washer according to claim 1, characterized in that: The plate washing head is provided with a liquid suction channel corresponding to the liquid suction needle, and the plate washing head is provided with a liquid adding channel corresponding to the liquid adding needle. The liquid suction channel is connected to the liquid discharge pipe, and the liquid adding channel is connected to the liquid inlet pipe. A diaphragm pump and a tube clamping valve are provided on the mounting bottom plate of the chassis corresponding to the liquid inlet pipe.

3. An automatic plate washer according to claim 1 or 2, characterized in that: When the cleaning water in the cleaning tank is full, it flows directly into the liquid collecting tank through the notch along the drainage slope. An overflow port is provided on the side of the liquid collecting tank, and the overflow port is connected to the waste liquid drainage pipe.

4. The automatic plate washer according to claim 1, characterized in that: The liquid aspiration needles and liquid addition needles are arranged in 2 rows, each row is provided with 8 needles, and the array spacing matches the hole spacing of the microplate.

5. An automatic plate washer according to claim 1 or 4, characterized in that: The length of the liquid aspiration needle is greater than that of the liquid addition needle.

6. The automatic plate washer according to claim 2, characterized in that: The cover shell of the chassis is provided with through holes corresponding to the lifting bracket, the pressure plate seat, the liquid inlet pipe and the liquid discharge pipe.

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