Sample cup cleaning device

Abstract

The utility model relates to the technical field of moving fluid cleaning equipment, and particularly discloses a sample cup cleaning device. The device comprises a cleaning part, a waste discharge part and a base, the cleaning part is used for providing cleaning liquid and washing the interior of a sample cup, the cleaning part comprises a covering part, a liquid outlet part, a liquid supply part and a first control part for controlling the position of the covering part, when the sample cup is cleaned, the covering part is moved until an opening of the sample cup is covered and shielded, and at the moment, the waste discharge part is used for discharging waste liquid; a plurality of liquid outlets contained in the liquid outlet part all face the inner wall of the sample cup; the waste discharge part is used for discharging waste liquid in the sample cup and comprises a waste discharge device and a second control part for controlling the position of the waste discharge device; the base is used for placing and fixing the sample cup. The sample cup cleaning device can be suitable for cleaning work of sample cups with large cross sectional areas, the water pressure and the liquid outlet amount needed in the cleaning process are relatively small, meanwhile, it is guaranteed that waste liquid cannot be splashed out in the cleaning process, and related operators are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of moving fluid cleaning equipment, in particular to a sample cup cleaning device. Background Art

[0002] In chemical testing, sample cups are often used to hold and test samples. Taking water quality testing as an example, the sample cup will hold the corresponding wastewater, and then add strong oxidants to test the chemical oxygen demand (COD) of the wastewater.

[0003] When the detection work is completed, it is necessary to deal with the wastewater in the sample cup and clean the sample cup. Since wastewater and liquids such as strong oxidants may cause great harm to the human body, a device that can automatically clean the inner wall of the sample cup is needed. For example, the patent with application number 201910349441.5 discloses a reaction cup cleaning needle, a reaction cup cleaning device and a reaction cup cleaning method. The reaction cup cleaning needle includes a liquid suction needle and a liquid discharge needle, and the liquid suction needle and the liquid discharge needle are arranged side by side; the liquid suction needle has a first head end and a first tail end, and a first opening for sucking liquid is opened on the first tail end, and the first opening extends in a direction away from the liquid discharge needle; the liquid discharge needle has a second head end and a second tail end, and a second opening for discharging liquid is opened on the second tail end, and the second opening extends in a direction away from the liquid suction needle.

[0004] However, the reaction cup cleaning needle is mainly suitable for slender reaction cups. On the one hand, when the cross-section of the reaction cup or sample cup is large, it is difficult for the cleaning needle to ensure effective impact on the inner wall of the sample cup to achieve the cleaning effect; on the other hand, when the sample cup is high, the cleaning needle needs a large water output and water pressure to clean the inner wall near the cup mouth, which easily causes waste of cleaning water. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a sample cup cleaning device, which can automatically rinse the inner wall of the sample cup to prevent toxic and harmful liquids caused by manual cleaning from causing damage to the human body; on the other hand, it can achieve the cleaning work of the inner wall of the sample cup with a smaller water output and water pressure.

[0006] The utility model is realized through the following technical solutions.

[0007] A sample cup cleaning device, characterized in that it comprises: a cleaning part, used for providing cleaning liquid and flushing the interior of the sample cup, comprising a covering part, a liquid outlet part arranged at the bottom of the covering part, a liquid supply part for providing the cleaning liquid to the liquid outlet part, and a first control part for controlling the position of the covering part, when the sample cup is cleaned, the covering part is moved until it covers and blocks the opening of the sample cup, and the plurality of liquid outlets included in the liquid outlet part are all facing the inner wall of the sample cup; a waste discharge part, used for discharging waste liquid in the sample cup, comprising a waste discharge device and a second control part for controlling the position of the waste discharge device; a base, used for placing and fixing the sample cup.

[0008] The covering part is used to cover the mouth of the cup to prevent the cleaning liquid from splashing out of the sample cup after contacting the inner wall of the sample cup during the cleaning process, thereby protecting the corresponding operator. At the same time, since the covering part is placed on the top of the sample cup and the liquid outlet is placed on the bottom of the covering part during the cleaning of the sample cup, the starting point of the cleaning liquid flowing out of the liquid outlet is actually close to the mouth of the sample cup, so that the inner wall of the sample cup including the part close to the opening can be rinsed under relatively small water pressure.

[0009] As a further improvement of the present invention, when the sample cup is being cleaned, the central axis of the covering portion, the central axis of the liquid outlet portion and the central axis of the sample cup are placed on the same straight line.

[0010] In the present invention, the central axis refers to the axis that vertically passes through the center of the covering part, the liquid outlet part, and the sample cup. Under this structure, firstly, after the covering part is moved into place, it can completely cover the opening of the sample cup, thereby preventing the gap from causing water overflow during cleaning. At the same time, the center of the liquid outlet part can be placed on the same straight line as the center of the sample cup, which also ensures that the pressure of the cleaning liquid in several liquid outlets is consistent, and the impact force of the liquid is also consistent, so as to avoid the situation where some parts of the inner wall are not cleaned thoroughly.

[0011] As a further improvement of the utility model, after being guided by the liquid outlet, the cleaning liquid flows out along the flushing path and finally contacts the inner wall, and an angle of 30 to 60 degrees is formed between the flushing path and the inner wall, and the opening of the angle is vertically upward. Under this structure, on the one hand, it is ensured that the cleaning liquid will not directly impact the covering part and cause liquid splashing, and on the other hand, after the cleaning liquid flows out, it can still have a certain impact cleaning effect on the inner wall near the bottom, ensuring the cleaning effect of the interior of the sample cup as a whole.

[0012] As a further improvement of the present invention, the waste discharge device includes a waste discharge needle, a liquid level sensor arranged on the waste discharge needle, and a waste liquid extraction device. One end of the waste discharge needle is a liquid suction end for sucking the waste liquid; the other end is used to connect with the waste liquid extraction device.

[0013] As a further improvement of the utility model, the liquid suction end passes through the covering part and contacts the liquid surface of the waste liquid. Under this structure, when waste discharge is required, the waste discharge needle is lowered, and when cleaning is performed, the waste discharge needle is retracted, which reduces the stroke of the waste discharge needle during the cleaning process, thereby causing the cleaning part and the waste discharge part to overlap partially on the covering part, reducing the overall volume of the cleaning part and the waste discharge part.

[0014] As a further improvement of the present invention, the end of the first control part used to connect with the covering part is the first moving end, and the end of the second control part used to connect with the waste discharge device is the second moving end; wherein, the first moving end is placed at the bottom of the second moving end and the moving paths of the two in the vertical direction are consistent. This further ensures that the moving paths of the covering part and the waste discharge needle are coordinated, and the moving paths of the structures required to be moved in the cleaning part and the waste discharge part are consistent, which will further reduce the overall volume of the sample cup cleaning device.

[0015] As a further improvement of the utility model, the base includes a magnetic stirring device and a rotor. When the sample cup is cleaned, the magnetic stirring device is placed at the bottom of the sample cup, and the rotor is placed inside the sample cup. This ensures that during the cleaning process, the cleaning liquid at the bottom of the sample cup is stirred, achieving the effect of impacting and cleaning the bottom of the sample cup.

[0016] As a further improvement of the utility model, the magnetic stirring device comprises at least two groups of magnetic sources, and several of the magnetic sources rotate and move around the same center. On the one hand, the rotor can be moved irregularly inside the sample cup, ensuring that the stirring effect can be achieved in any corner to prevent the occurrence of cleaning dead corners; on the other hand, when the waste discharge needle reaches the bottom of the sample cup, one of the magnetic sources can be used to adsorb the rotor to the edge of the bottom of the sample cup to ensure that the rotor will not conflict with the liquid aspiration end of the waste discharge needle.

[0017] As a further improvement of the utility model, it comprises at least one set of the cleaning part and the waste discharge part as described in any one of the above items, and a plurality of the bases as described in any one of the above items.

[0018] As a further improvement of the present invention, the first control unit and the second control unit have one end for fixing themselves, which are both mounting ends, and the mounting ends are both placed on the same mounting base, and the mounting base includes a mounting seat adapted to the mounting end and a displacement device for controlling the movement of the mounting seat. This ensures that when cleaning sample cups on multiple bases, the cleaning unit and the waste discharge unit can move in coordination, without affecting the positional relationship between the cleaning unit and the waste discharge unit, and ensures that the coordination effect of the two remains unchanged.

[0019] The beneficial effect of the utility model is that it can be applied to the cleaning work of sample cups with larger cross-sectional areas. The water pressure and liquid output required in the cleaning process are relatively small. At the same time, it ensures that the waste liquid will not splash out during the cleaning process, thereby protecting the relevant operators. After optimizing the structure of the cleaning part and the waste discharge part, the moving stroke of the covering part, the waste discharge device, etc. can be reduced, thereby improving the speed of the cleaning work; at the same time, the overall volume of the sample cup cleaning device is reduced. After the structural optimization, the cleaning part and the waste discharge part of the sample cup cleaning device can move in coordination, so that the cleaning part and the waste discharge part can move between multiple sample cups and carry out cleaning work, thereby speeding up the cleaning work of multiple groups of sample cups. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings are provided for combining with the preferred implementation cases of the present invention to help understand the purpose and advantages of the present invention, wherein:

[0021] Figure 1 It is a schematic diagram of the structure of the sample cup cleaning device;

[0022] Figure 2 This is a schematic diagram of the position relationship between the cleaning part and the sample cup in the cleaning state. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below based on the accompanying drawings and implementation cases.

[0024] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0025] Embodiment 1:

[0026] A sample cup cleaning device, such as Figure 1As shown, it includes a cleaning part 1, a waste discharge part 2 and a base 3. In terms of the overall use concept, after placing the sample cup A on the base 3, the remaining reaction waste liquid in the cup is first discharged through the waste discharge part 2, and then the inside of the sample cup A is cleaned through the cleaning part 1, and then the cleaning waste liquid is discharged through the waste discharge part 2, and the above cleaning and waste discharge steps are repeated until the cleaning of the sample cup A meets the requirements, that is, it will not cause pollution to the subsequent detection process.

[0027] The cleaning part 1 is mainly used to clean the inside of the sample cup A. The sample cup A used for chemical testing may contain harmful liquids. Therefore, during the cleaning process, if the cleaning waste liquid containing harmful liquids splashes out, it may cause damage to the operator. Therefore, the cleaning part 1 includes a covering part 101, a liquid outlet 102 disposed at the bottom of the covering part 101, a liquid supply part 103 for providing cleaning liquid to the liquid outlet 102, and a first control part 104 for controlling the position of the covering part 101.

[0028] like Figure 2 As shown, when cleaning the sample cup A, the covering portion 101 covers and blocks the opening of the sample cup A, and can block the splashing cleaning liquid during the cleaning process. The liquid outlet 102 is placed at the bottom of the covering portion 101. Since the covering portion 101 is placed at the opening of the sample cup A, the liquid outlet 102 is also placed near the opening of the sample cup A. In this embodiment, six liquid outlets 102-1 are arranged on the liquid outlet 102, and each liquid outlet 102-1 faces the inner wall of the sample cup A. Therefore, the cleaning portion 1 can also have a good cleaning effect on the inner wall near the opening of the sample cup A and the required water pressure is relatively small.

[0029] like Figure 1 As shown, the liquid supply part 103 is connected to the liquid outlet part 102 through a pipeline. In this embodiment, the liquid supply part 103 provides deionized water to the liquid outlet part 102 through a diaphragm pump to clean the inside of the sample cup A. The first control part 104 is used to control the position of the covering part 101 and also realizes the movement of the position of the liquid outlet part 102. The first control part 104 can drive the covering part 101 to completely seal the opening of the sample cup A at the correct position.

[0030] The waste discharge part 2 is mainly used to discharge the waste liquid after reaction or cleaning in the sample cup A out of the sample cup A, and therefore includes a waste discharge device 201 and a second control unit 202 for controlling the position of the waste discharge device 201. In the cleaning operation, in order to prevent the waste discharge device 201 from affecting the cleaning process, the waste discharge device 201 needs to be displaced by the second control unit 202, and then in the waste discharge operation, the waste discharge device 201 is moved to the sample cup A until it contacts the liquid surface of the waste liquid.

[0031] The first control device and the second control device may be any device that drives the covering part and the waste discharge device to move in three-dimensional space, such as a combination of a mechanical arm, a guide rail and a mounting rod.

[0032] The base 3, as the main sample cup A placement platform, can preferably be provided with positioning components such as a recessed portion and a positioning mold to limit the placement position of the sample cup A, ensuring that the covering work of the covering portion 101 and other work involving the movement of components can be repeated without much adjustment compared to the previous time.

[0033] Preferably, if Figure 2 As shown, when cleaning the sample cup A, the central axis of the covering part 101, the central axis of the liquid outlet part 102 and the central axis of the sample cup A are placed on the same straight line. On the one hand, it ensures that the covering part 101 can completely seal the opening of the sample cup A, so as to prevent some waste liquid from overflowing from the unsealed opening during the cleaning process; on the other hand, the liquid supply part 103 provides the liquid outlet part 102 with cleaning liquid, and the cleaning liquid flows around from the central axis position of the liquid outlet part 102 and finally flows out through the liquid outlet 102-1. Under this structure, it ensures that when the cleaning liquid flows out of each liquid outlet 102-1 in the liquid outlet part 102, the impact force of the cleaning liquid on the inner wall of the sample cup A is consistent, so as to prevent the situation that some positions of the inner wall of the sample cup are not rinsed thoroughly.

[0034] Preferably, if Figure 2 As shown, the cleaning liquid flows out after being guided by the liquid outlet 102-1, and finally contacts the inner wall of the sample cup A, and this process forms a flushing path. In this embodiment, the inner wall of the sample cup A is in a vertical state, and the flushing path forms an angle α of 45° with the inner wall, and the opening of the angle α is vertically upward. Compared with the cleaning liquid flushing perpendicularly to the inner wall, under this flushing path, it is ensured that the cleaning liquid still retains some impact force after colliding with the inner wall, so as to have a flushing effect on the bottom of the sample cup A.

[0035] Preferably, if Figure 1As shown, the waste discharge device 201 includes a waste discharge needle 201-1, a liquid level sensor installed on the waste discharge needle 201-1, and a waste liquid extraction device 201-2. Among them, one end of the waste discharge needle 201-1 is used to contact with the waste liquid, which is the liquid suction end 201-1a. When performing waste discharge work, the liquid level of the waste liquid can be detected by the liquid level sensor, and then the waste discharge device 201 is moved by the second control unit 202 to ensure that the liquid suction end 201-1a is always in contact with the waste liquid. When performing cleaning work, the second control unit 202 can be used to lift the waste discharge needle 201-1 to avoid affecting the flushing of the liquid outlet 102. The other end of the waste discharge needle 201-1 is connected to the waste liquid extraction device 201-2 through a pipeline, which is used to discharge the waste liquid out of the sample cup A. In this embodiment, the waste liquid extraction device 201-2 realizes the extraction of waste liquid through a peristaltic pump.

[0036] Preferably, if Figure 1 As shown, the liquid suction end 201-1a penetrates through the cover portion 101 and then contacts the waste liquid. Under this structure, when performing waste discharge work, the waste discharge needle 201-1 only needs to move to the bottom of the sample cup A, and when performing cleaning work, it is only necessary to lift the waste discharge needle 201-1 until its liquid suction end 201-1a is close to the liquid outlet portion 102, or placed inside the liquid outlet portion 102 and / or the cover portion 101, which greatly shortens the moving stroke of the waste discharge needle 201-1 and speeds up the switching speed between waste discharge work and cleaning work.

[0037] Preferably, if Figure 1 As shown, the end of the first control unit 104 used for connecting with the covering unit 101 is the first moving end, and the end of the second control unit 202 used for connecting with the waste discharge device 201 is the second moving end; the first moving end is placed at the bottom of the second moving end and the moving paths of the two in the vertical direction are consistent. Under this structure, when the covering unit 101 moves into place, that is, after the opening of the sample cup A is covered and sealed, the liquid suction end 201-1a of the waste discharge device 201 will also be placed on the top of the opening, so that the parts of the cleaning unit 1 and the waste discharge unit 2 that are directly used for cleaning and waste discharge work are moved into place together, ensuring that the two are placed in the working area at the same time. This avoids the situation where the components in the cleaning unit 1 and the waste discharge unit 2 need to be moved separately when switching between waste discharge work and cleaning work, and then the related work is carried out after they are moved into place, thereby speeding up the cleaning work of the sample cup A.

[0038] Preferably, if Figure 1As shown, the base 3 also includes a magnetic stirring device 301 and a rotor. When the sample cup A is placed, the magnetic stirring device 301 is placed at the bottom of the sample cup A, and the rotor is placed in the sample cup A. When the sample cup A is in the cleaning process, the magnetic stirring device 301 drives the rotor to move at the bottom of the sample cup A to stir the cleaning liquid at the bottom of the sample cup A, so as to ensure that the bottom of the sample cup A is cleaned.

[0039] Preferably, if Figure 1 As shown, in this embodiment, the magnetic stirring device 301 includes two groups of magnetic sources 301-1, and the two magnetic sources 301-1 rotate and move around the same center. When the sample cup A is cleaned, the rotor is not limited to rotating at the center of the sample cup A, but moves and / or rotates irregularly at the bottom of the sample cup A, during which the cleaning liquid in the sample cup A is stirred, so that the cleaning liquid impacts the bottom of the sample cup A and the inner wall near the bottom. At the same time, the rotor itself can also contact the bottom of the sample cup A and the inner wall near the bottom, preventing the waste liquid from adhering to this part.

[0040] When the sample cup A is discharging waste, one of the magnetic sources 301-1 still generates magnetic force to attract the rotor to the edge of the bottom of the sample cup A, thereby preventing the rotor from colliding with the waste discharge device 201 such as the waste discharge needle 201-1. On the one hand, it ensures that the waste discharge device 201 can contact the bottom of the sample cup A without hindrance, thereby discharging the waste liquid, and on the other hand, it ensures that the rotor will not damage the waste discharge device 201.

[0041] Embodiment 2:

[0042] The difference between this embodiment and the first embodiment is that it comprises at least one set of any of the cleaning parts 1 and waste discharge parts 2 described above, and a plurality of any of the bases 3 described above.

[0043] In this embodiment, a cleaning unit 1 and a waste discharge unit 2 are included, and three bases 3 are provided. The first control unit 104 and the second control unit 202 can drive the cleaning unit 1 and the waste discharge unit 2 to move, so as to clean the sample cups A on the three bases 3 in sequence.

[0044] Preferably, if Figure 1 As shown, one end of the first control unit 104 and the second control unit 202 for fixing themselves is a mounting end, and the mounting ends are both placed on the same mounting base 4, and the mounting base 4 includes a mounting seat 401 adapted to the mounting end and a displacement device 402 for controlling the movement of the mounting seat 401. In this embodiment, the displacement device 402 is a screw structure, which can drive the mounting seat 401 to move in the horizontal direction.

[0045] Under this structure, the consistency and coordination of the displacement of the cleaning part 1 and the waste discharge part 2 are ensured. It is only necessary to control the position of the mounting seat 401 to achieve the simultaneous displacement control effect of the cleaning part 1 and the waste discharge part 2, thereby speeding up the position calibration speed of the two and also speeding up the work efficiency of the sample cup cleaning device when cleaning multiple sample cups A.

[0046] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.

Claims

1. A sample cup cleaning device, characterized in that: Contains: A cleaning portion (1) is used to provide cleaning liquid and clean the interior of a sample cup (A), comprising a covering portion (101), a liquid outlet portion (102) arranged at the bottom of the covering portion (101), a liquid supply portion (103) used to provide the cleaning liquid to the liquid outlet portion (102), and a first control portion (104) for controlling the position of the covering portion (101); when cleaning the sample cup (A), the covering portion (101) is moved until it covers and blocks the opening of the sample cup (A); and a plurality of liquid outlets (102-1) included in the liquid outlet portion (102) are all oriented toward the inner wall of the sample cup (A); A waste discharge unit (2) is used to discharge waste liquid in the sample cup (A), comprising a waste discharge device (201) and a second control unit (202) for controlling the position of the waste discharge device (201); The base (3) is used to place and fix the sample cup (A).

2. A sample cup cleaning device according to claim 1, characterized in that: When the sample cup (A) is being cleaned, the central axis of the covering portion (101), the central axis of the liquid outlet portion (102), and the central axis of the sample cup (A) are placed on the same straight line.

3. A sample cup cleaning device according to claim 2, characterized in that: The cleaning liquid is guided by the liquid outlet (102-1) to flow out along a flushing path and finally contacts the inner wall. An angle (α) of 30 to 60 degrees is formed between the flushing path and the inner wall, and the opening of the angle (α) is vertically upward.

4. The sample cup cleaning device according to claim 1, characterized in that: The waste discharge device (201) comprises a waste discharge needle (201-1), a liquid level sensor arranged on the waste discharge needle (201-1), and a waste liquid extraction device (201-2); one end of the waste discharge needle (201-1) is a liquid suction end (201-1a) for sucking the waste liquid; the other end is used to connect to the waste liquid extraction device (201-2).

5. The sample cup cleaning device according to claim 4, characterized in that: The liquid suction end (201-1a) passes through the covering portion (101) and contacts the waste liquid.

6. The sample cup cleaning device according to claim 5, characterized in that: An end of the first control part (104) used for connecting to the covering part (101) is a first movable end, and an end of the second control part (202) used for connecting to the waste discharge device (201) is a second movable end; The first moving end is placed at the bottom of the second moving end and the moving paths of the two in the vertical direction are consistent.

7. The sample cup cleaning device according to claim 1, characterized in that: The base (3) comprises a magnetic stirring device (301) and a rotor. When the sample cup (A) is being cleaned, the magnetic stirring device (301) is placed at the bottom of the sample cup (A) and the rotor is placed inside the sample cup (A).

8. The sample cup cleaning device according to claim 7, characterized in that: The magnetic stirring device (301) comprises at least two groups of magnetic sources (301-1), and a plurality of the magnetic sources (301-1) rotate and move around the same center.

9. A sample cup cleaning device according to any one of claims 1 to 8, characterized in that: It comprises at least one set of the cleaning part (1) and the waste discharge part (2), and a plurality of bases (3).

10. The sample cup cleaning device according to claim 9, characterized in that: One end of the first control unit (104) and the second control unit (202) used to fix themselves is a mounting end, and the mounting ends are placed on the same mounting base (4). The mounting base (4) comprises a mounting seat (401) adapted to the mounting end and a displacement device (402) for controlling the movement of the mounting seat (401).

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