Ultrasonic cleaning device, ultrasonic cleaning control method and analyzer

Abstract

The invention is applicable to the technical field of medical equipment, and provides an ultrasonic cleaning device, an ultrasonic cleaning control method and an analyser, the ultrasonic cleaning device comprises a main shell and a cleaning cabin, one end of the cleaning cabin is provided with a needle inlet for needle insertion, the other end of the cleaning cabin is connected with the main shell, and an inner cavity of the cleaning cabin is communicated with the needle inlet and an inner cavity of the main shell; an ultrasonic transducer is arranged on the main shell, and a vibration starting part of the ultrasonic transducer is located on a communicating passage of the inner cavity of the cleaning cabin and the inner cavity of the main shell; a liquid outlet and a liquid inlet which are communicated with an inner cavity of the main shell are formed in the main shell, and the liquid outlet is communicated with the bottom of the inner cavity of the main shell. The vibration starting part of the ultrasonic transducer can make direct contact with liquid, the ultrasonic cleaning effect is good, meanwhile, the liquid discharging opening is formed to communicate with the bottom of the inner cavity of the main shell, the liquid in the inner cavity of the main shell can be completely discharged conveniently, it is avoided that accumulated liquid and deposited pollutants are formed in the inner cavity of the main shell, and consequently the pool body of the cleaning bin is polluted, and the cleaning effect is further guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to an ultrasonic cleaning device, an ultrasonic cleaning control method and an analyzer. Background Art

[0002] An analyzer is an instrument used to test samples. During the testing process, the sample needs to be transferred from the sample tube to the reaction tube through a sampling needle. The sampling needle is contaminated by the sample when transferring the sample and needs to be cleaned with a cleaning device. Ultrasonic cleaning devices are a commonly used cleaning device.

[0003] In the existing ultrasonic cleaning device for sampling needles, the liquid in the cleaning chamber needs to be discharged from the inlet through which the sampling needle enters. However, since the inlet through which the sampling needle enters is arranged at the top of the cleaning chamber, there is a problem of liquid accumulation in the cleaning chamber, which is prone to crystallization or deposition of pollutants, contaminating the cleaning chamber body and affecting the cleaning effect. Summary of the Invention

[0004] The present invention provides an ultrasonic device, which aims to solve the problem of liquid accumulation in the cleaning chamber in existing ultrasonic cleaning devices, which easily generates crystallization or deposition of pollutants, contaminating the cleaning chamber body and affecting the cleaning effect.

[0005] The present invention is achieved by an ultrasonic cleaning device comprising:

[0006] The cleaning chamber comprises a main shell and a cleaning chamber, wherein one end of the cleaning chamber is provided with a needle insertion port for inserting a needle, and the other end is connected to the main shell, and the inner cavity of the cleaning chamber communicates with the needle insertion port and the inner cavity of the main shell;

[0007] An ultrasonic transducer is provided on the main shell, and a vibration-generating portion of the ultrasonic transducer is located on a communication path between the inner cavity of the cleaning chamber and the inner cavity of the main shell;

[0008] The main shell is provided with a liquid discharge port and a liquid inlet connected to the inner cavity of the main shell, respectively. The liquid discharge port is connected to the bottom of the inner cavity of the main shell.

[0009] Optionally, the opening of the liquid inlet faces the ultrasonic transducer.

[0010] Optionally, the liquid inlet opening and the liquid outlet opening are arranged opposite to each other with the ultrasonic transducer in between.

[0011] Optionally, an annular groove is formed between the transducer and the inner wall of the main housing, and the liquid inlet and the liquid outlet are respectively connected to the annular groove.

[0012] Optionally, the main housing and the ultrasonic transducer are interference fit.

[0013] Optionally, a wall surrounding the cleaning chamber extends from the main shell to form a waste liquid tank;

[0014] The shell is also provided with a waste liquid port connected to the waste liquid tank.

[0015] Optionally, the cleaning chamber and the main shell are an integrally formed structure.

[0016] Optionally, the cleaning cabin and the main shell are threaded, bonded or welded.

[0017] Optionally, the height of the surrounding wall is greater than the height of the cleaning cabin.

[0018] The present invention also provides an ultrasonic cleaning control method, comprising:

[0019] introducing a cleaning medium into the inner cavity of the cleaning chamber through a liquid inlet;

[0020] Controlling the sampling needle to extend into the inner cavity of the cleaning chamber;

[0021] Turn on the ultrasonic transducer and perform ultrasonic cleaning;

[0022] Discharge the cleaning medium in the inner cavity of the cleaning chamber through the drain port;

[0023] Introducing cleaning water into the inner cavity of the main shell through the liquid inlet to flush the inner cavity of the main shell;

[0024] Introducing cleaning water into the inner cavity of the cleaning chamber through the liquid inlet, so that the cleaning water flows out from the needle inlet;

[0025] The cleaning water in the inner cavity of the main shell and the inner cavity of the cleaning chamber is discharged through the drain port.

[0026] Optionally, after draining the waste liquid from the inner cavity of the main shell and the inner cavity of the cleaning chamber, the method further includes:

[0027] Controlling the sampling needle to move out of the inner cavity of the cleaning chamber;

[0028] Control the flushing of the inner wall of the sampling needle.

[0029] The present invention also provides an analyzer, comprising the ultrasonic cleaning device as described above, wherein the liquid discharge port is connected to the second switch valve and the negative pressure pump, the liquid inlet is connected to the cleaning liquid pool through the first switch valve and the first power pump, and is connected to the cleaning water pool through the third switch valve and the second power pump.

[0030] The beneficial effects achieved by the present invention are that, because the inner cavity of the cleaning chamber is connected to the inner cavity of the main housing, and the vibration-generating portion of the ultrasonic transducer is located in the communication path between the inner cavity of the cleaning chamber and the inner cavity of the main housing, the vibration-generating portion of the ultrasonic transducer can directly contact the liquid, thereby achieving a good ultrasonic cleaning effect. Furthermore, a liquid drain port is provided that is connected to the bottom of the inner cavity of the main housing, facilitating the complete drainage of liquid in the inner cavity of the main housing, thereby preventing the accumulation of liquid and the deposition of contaminants in the inner cavity of the main housing, which could contaminate the tank of the cleaning chamber, further ensuring a good cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structural disassembly of an ultrasonic cleaning device provided by the present invention;

[0032] Figure 2 This is a three-dimensional structural diagram of another ultrasonic cleaning device provided by the present invention.

[0033] Figure 3 is a top view of another ultrasonic cleaning device provided by the present invention;

[0034] Figure 4 1 is a schematic diagram of the ultrasonic cleaning device provided by the present invention in the direction of AA;

[0035] Figure 5 BB is a schematic diagram of the ultrasonic cleaning device provided by the present invention;

[0036] Figure 6 1 is a flow chart of an ultrasonic cleaning control method provided in a tenth embodiment of the present invention;

[0037] Figure 7 1 is a flow chart of an ultrasonic cleaning control method provided in the eleventh embodiment of the present invention;

[0038] Figure 8 It is a schematic diagram of the liquid path connection of the analyzer provided by the present invention.

[0039] Description of reference numerals:

[0040] 100. Ultrasonic cleaning device; 101. Main housing; 1011. Enclosure; 1012. Inner cavity of main housing; 102. Cleaning chamber; 1021. Needle inlet; 1022. Inner cavity of cleaning chamber; 103. Ultrasonic transducer; 1031. Vibration generating unit; 104. Liquid drain port; 105. Liquid inlet port; 106. Waste liquid tank; 107. Waste liquid port;

[0041] 200. Analyzer; 201. First switch valve; 202. First power pump; 203. Second switch valve; 204. Negative pressure pump; 205. Cleaning liquid pool; 206. Cleaning water pool; 207. Waste liquid pool; 208. Third switch valve; 209. Second power pump. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. In addition, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0046] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the application of other processes and / or the use of other materials.

[0047] In the present invention, since the inner cavity of the cleaning chamber is connected to the inner cavity of the main housing, and the vibration-generating portion of the ultrasonic transducer is located in the communication path between the inner cavity of the cleaning chamber and the inner cavity of the main housing, the vibration-generating portion of the ultrasonic transducer can directly contact the liquid, thereby improving the ultrasonic cleaning effect. At the same time, a liquid drain port is provided to connect to the bottom of the inner cavity of the main housing, facilitating the complete drainage of liquid in the inner cavity of the main housing, preventing the accumulation of liquid and the deposition of contaminants in the inner cavity of the main housing, which could contaminate the pool of the cleaning chamber, further ensuring the cleaning effect.

[0048] Example 1

[0049] like Figures 1 to 5 As shown, this embodiment provides an ultrasonic cleaning device 100, comprising:

[0050] The main housing 101 and the cleaning chamber 102, one end of the cleaning chamber 102 is provided with a needle inlet 1021 for inserting a needle, and the other end is connected to the main housing 101, and the inner cavity 1022 of the cleaning chamber communicates with the needle inlet 1021 and the inner cavity 1012 of the main housing;

[0051] An ultrasonic transducer 103 is provided on the main housing 101, and a vibration generating portion 1031 of the ultrasonic transducer 103 is located on the communication path between the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing;

[0052] The main housing 101 is provided with a liquid discharge port 104 and a liquid inlet 105 which are connected to the inner cavity of the main housing 101 . The liquid discharge port 104 is connected to the bottom of the inner cavity of the main housing 101 .

[0053] Ultrasonic transducer 103 is a device that converts electromagnetic energy into mechanical energy (acoustic energy). It is typically made of piezoelectric ceramics or other magnetostrictive materials. The piezoelectric effect of the material converts electrical signals into mechanical vibrations. Ultrasonic transducer 103 can be used for ultrasonic cleaning. The ultrasonic waves generated by ultrasonic transducer 103 act directly and indirectly on the liquid and dirt through cavitation, acceleration, and direct flow in the liquid, dispersing, emulsifying, and exfoliating the dirt layer, achieving the cleaning effect.

[0054] The inner cavity 1022 of the cleaning chamber communicates with the inner cavity 1012 of the main housing. An ultrasonic transducer 103 is mounted on the main housing 101, with a vibration-generating portion 1031 of the ultrasonic transducer 103 located in the communication path between the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing. When both the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing are filled with liquid, the vibration-generating portion 1031 of the ultrasonic transducer 103 is immersed in the liquid. When the ultrasonic transducer 103 is operating, it generates cavitation in the liquid in both the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing.

[0055] The sampling needle is inserted into the inner cavity 1022 of the cleaning chamber through the needle inlet 1021 at one end of the cleaning chamber 102. The liquid in the cleaning chamber 102 immerses the part of the sampling needle that needs to be cleaned. The ultrasonic transducer 103 is turned on to utilize the cavitation effect, acceleration effect and straight flow effect of ultrasonic waves in the liquid to peel off the stains on the sampling needle, thereby achieving the purpose of cleaning.

[0056] The drain port 104 and the inlet port 105 are respectively connected to the inner cavity 1012 of the main housing, and the drain port 104 is connected to the bottom of the inner cavity of the main housing 101. Specifically, the drain port 104 can be set at the bottom of the inner cavity of the main housing 101, or the drain port 104 can be opened on the side wall of the inner cavity of the main housing 101, with the outline of the opening partially overlapping with the bottom of the inner cavity of the main housing 101. The inlet port 105 is used to fill liquid into the inner cavity 1012 of the main housing and the inner cavity 1022 of the cleaning chamber, while the drain port 104 is used to drain liquid from the inner cavity 1012 of the main housing and the inner cavity 1022 of the cleaning chamber. Since the drain port 104 is connected to the bottom of the inner cavity of the main housing 101, it is convenient to completely drain the liquid in the inner cavity 1012 of the main housing, avoiding the formation of liquid accumulation in the inner cavity 1012 of the main housing.

[0057] In this embodiment, since the inner cavity 1022 of the cleaning chamber is connected to the inner cavity 1012 of the main housing, and the vibration-generating portion 1031 of the ultrasonic transducer 103 is located in the communication path between the inner cavity 1022 of the cleaning chamber and the inner cavity 1012 of the main housing, the vibration-generating portion 1031 of the ultrasonic transducer 103 can directly contact the liquid, thereby improving the ultrasonic cleaning effect. At the same time, the provision of a drain port 104 connected to the bottom of the inner cavity of the main housing 101 facilitates the complete drainage of the liquid in the inner cavity 1012 of the main housing, thereby preventing the accumulation of liquid in the inner cavity 1012 of the main housing, the deposition of contaminants, and the contamination of the pool of the cleaning chamber 102, further ensuring the cleaning effect.

[0058] Example 2

[0059] Based on the first embodiment, the opening of the liquid inlet 105 faces the ultrasonic transducer 103 .

[0060] When the liquid flows, the flow velocity is not 0, and the liquid with velocity has an impact force, and the direction of the impact force is consistent with the direction of the liquid velocity. The greater the liquid flow velocity, the greater the impact force. The liquid flows from the liquid inlet 105 into the inner cavity 1022 of the cleaning chamber or the inner cavity 1012 of the main shell, and the direction of the liquid inlet 105 is the velocity direction of the inflowing liquid. The opening of the liquid inlet 105 is toward the ultrasonic transducer 103, that is, the liquid flowing from the liquid inlet 105 is toward the ultrasonic transducer 103, and the direction of the impact force of the liquid is toward the ultrasonic transducer 103. The impact force when the liquid flows in helps to clean the ultrasonic transducer 103 and avoid deposition on the surface of the ultrasonic transducer 103, thereby affecting the ultrasonic cleaning effect.

[0061] Example 3

[0062] like Figure 5 As shown, based on the second embodiment, the opening of the liquid inlet 105 and the opening of the liquid outlet 104 are arranged opposite to each other with the ultrasonic transducer 103 in between.

[0063] In this embodiment, the liquid inlet 105 is used to fill liquid into the inner cavity 1012 of the main housing and the inner cavity 1022 of the cleaning chamber, while the liquid discharge port 104 is used to discharge liquid from the inner cavity 1012 of the main housing and the inner cavity 1022 of the cleaning chamber. The openings of the liquid inlet 105 and the liquid discharge port 104 are arranged opposite each other, which facilitates the discharge of the incoming liquid and increases the liquid flow rate. The ultrasonic transducer 103 is arranged between the openings of the liquid inlet 105 and the liquid discharge port 104, so the liquid flows into the ultrasonic transducer 103 at a faster rate, the impact force of the liquid on the ultrasonic transducer 103 is greater, and the cleaning effect on the ultrasonic transducer 103 is better.

[0064] Example 4

[0065] like Figure 4 and Figure 5 As shown, based on the first embodiment, an annular groove is formed between the transducer and the inner wall of the main housing 101 , and the liquid inlet 105 and the liquid outlet 104 are respectively connected to the annular groove.

[0066] When liquid flows into the annular groove, the groove wall changes the flow direction of the liquid, causing the liquid to flow along the annular groove, generating a circular flow. The flowing liquid has an impact force, and the liquid in the annular groove flushes the groove wall.

[0067] In this embodiment, the annular groove is formed by the transducer and the inner wall of the main housing 101. The inflowing liquid flushes the transducer surrounding the annular groove and the inner wall of the main housing 101, and the cleaning effect is good.

[0068] The liquid inlet 105 and the liquid outlet 104 are respectively connected to the annular groove, which helps to increase the flow rate of the liquid in the annular groove and achieve a better cleaning effect.

[0069] Example 5

[0070] like Figure 5 As shown, based on the first embodiment, the main housing 101 and the ultrasonic transducer 103 are interference fit.

[0071] The ultrasonic transducer 103 is mounted on the main housing 101. When the two objects are installed and matched, there will be a gap. The inner cavity 1012 of the main housing accommodates liquid flowing through. The larger the gap, the easier it is for liquid to penetrate into the gap, which can easily cause liquid or contaminants to be deposited in the gap.

[0072] The main housing 101 and the ultrasonic transducer 103 are interference-fitted to minimize the gap and prevent liquid or contaminants from being deposited in the gap. The interference fit also provides a certain sealing effect, helping to prevent leakage at the connection between the main housing 101 and the ultrasonic transducer 103.

[0073] Example 6

[0074] like Figure 2 and Figure 3 As shown, based on the first embodiment, a wall 1011 surrounding the cleaning chamber 102 is extended from the main shell 101 to form a waste liquid tank 106;

[0075] The housing is further provided with a waste liquid port 107 connected to the waste liquid tank 106 .

[0076] In this embodiment, a surrounding wall 1011 extends from the main housing 101 in a direction aligned with the needle inlet 1021. The extended surrounding wall 1011 forms a waste liquid tank 106, within which the cleaning chamber 102 is located. A waste liquid port 107 is provided at the bottom of the waste liquid tank 106 or on a sidewall near the bottom thereof, communicating with the waste liquid tank 106. Liquid within the waste liquid tank 106 can be discharged through the waste liquid port 107.

[0077] Example 7

[0078] Based on the first embodiment, the cleaning chamber 102 and the main shell 101 are an integrally formed structure.

[0079] The one-piece structure is achieved through a one-piece molding process. This process involves molding the entire part in a single mold. Compared to traditional, step-by-step manufacturing processes, one-piece molding significantly reduces production costs and accelerates production, enabling the rapid production of a wide variety of parts, products, and tools.

[0080] And there is no seam on the one-piece structure. Since the cleaning chamber 102 and the main shell 101 need to contain liquid, the one-piece structure makes there no seam between the cleaning chamber 102 and the main shell 101, avoiding the risk of leakage.

[0081] Example 8

[0082] Based on the first embodiment, the cleaning cabin 102 and the main housing 101 are threadedly connected, bonded or welded.

[0083] Threaded connection is a common detachable connection method, which is easy to disassemble and has a certain sealing performance.

[0084] Adhesion or welding are both non-detachable connection methods, which can fix the cleaning chamber 102 and the main housing 101 together and provide good sealing performance. The specific method of adhesion or welding to be used should be selected according to the materials of the cleaning chamber 102 and the main housing 101.

[0085] Example 9

[0086] Based on the sixth embodiment, the height of the surrounding wall 1011 is greater than the height of the cleaning chamber 102 .

[0087] The surrounding wall 1011 serves as the sidewall of the waste liquid tank 106, within which the cleaning chamber 102 is located. During use, liquid within the cleaning chamber 102 may overflow from the needle inlet 1021. The overflowed liquid collects in the waste liquid tank 106 and is then drained through the waste liquid port 107. The height of the surrounding wall 1011 is greater than that of the cleaning chamber 102, effectively preventing liquid overflowing from the cleaning chamber 102 from splashing outside the waste liquid tank 106.

[0088] Example 10

[0089] like Figure 6 FIG. 1 is a flow chart of an ultrasonic cleaning control method according to an embodiment of the present invention, the method comprising the following steps:

[0090] S101, introducing a cleaning medium into the inner cavity 1022 of the cleaning chamber through the liquid inlet 105;

[0091] S102, controlling the sampling needle to extend into the inner cavity 1022 of the cleaning chamber;

[0092] S103, turning on the ultrasonic transducer 103 to perform ultrasonic cleaning;

[0093] S104, draining the cleaning medium in the inner cavity 1022 of the cleaning chamber through the drain port 104;

[0094] S105, introducing cleaning water into the inner cavity 1012 of the main housing through the liquid inlet 105 to flush the inner cavity 1012 of the main housing;

[0095] S106, introducing cleaning water into the inner cavity 1022 of the cleaning chamber through the liquid inlet 105, so that the cleaning water flows out from the needle inlet 1021;

[0096] S107 , draining the cleaning water in the inner cavity 1012 of the main shell and the inner cavity 1022 of the cleaning chamber through the drain port 104 .

[0097] In this embodiment, the order of step S101 and step S102 can be exchanged without affecting the implementation of the method.

[0098] In step S101, a cleaning medium is introduced into the cleaning chamber 102 through the liquid inlet 105. The cleaning medium is a liquid, which can be cleaning water (such as purified water, deionized water) or a cleaning liquid (a solution containing a cleaning agent), so that the cleaning medium fills the inner cavity 1022 of the cleaning chamber.

[0099] In step S102 , the sampling needle is controlled to extend into the cleaning chamber 102 , and the portion of the sampling needle that needs to be cleaned is immersed below the liquid level of the cleaning medium.

[0100] In step S103, the ultrasonic transducer 103 is turned on, and the vibration part 1031 of the ultrasonic transducer 103 emits ultrasonic waves. The cavitation effect, acceleration effect and straight flow effect of the ultrasonic waves in the liquid directly and indirectly act on the liquid and the dirt on the sampling needle, so that the dirt layer on the sampling needle is dispersed, emulsified and peeled off, thereby achieving the cleaning purpose.

[0101] In step S104, waste liquid in the cleaning chamber 102 is drained through the drain port 104. The cleaning medium introduced into the cleaning chamber 102 in step S101 is contaminated by dirt detached from the sampling needle in step S103, becoming waste liquid. Draining the waste liquid frees the sampling needle from contact with the waste liquid, completing the initial cleaning process.

[0102] In step S105 , cleaning water is introduced into the inner cavity 1012 of the main housing through the liquid inlet 105 . The cleaning water flushes the inner cavity 1012 of the main housing and washes away the waste liquid remaining in the inner cavity of the main housing 101 .

[0103] In step S106, cleaning water is introduced into the cleaning chamber 102 through the liquid inlet 105, so that the cleaning water flows out from the needle inlet 1021. The cleaning water flushes the inner cavity 1022 of the cleaning chamber and the part of the sampling needle placed in the cleaning chamber 102, and washes away the waste liquid remaining in the inner cavity of the cleaning chamber 102 and on the sampling needle.

[0104] In step S107, the waste liquid remaining in the inner cavity 1022 of the cleaning chamber, the inner cavity 1012 of the main shell and the sampling needle is diluted in the cleaning water, the cleaning water is contaminated and becomes waste liquid, and the concentration of dirt in the waste liquid is continuously diluted with the flow of cleaning water in and out, and the waste liquid in the inner cavity 1012 of the main shell and the inner cavity 1022 of the cleaning chamber is emptied to complete the secondary cleaning.

[0105] In this embodiment, the sampling needle is first preliminarily cleaned by ultrasonic cleaning using a cleaning medium. The cleaning medium selected for the preliminary cleaning can be cleaning water or a cleaning agent. The specific cleaning medium can be selected according to the degree of accumulation of dirt; then a secondary cleaning is performed using cleaning water to flush away the waste liquid remaining from the preliminary cleaning. The two cleanings have a better cleaning effect.

[0106] Example 11

[0107] like Figure 7 FIG. 1 is a flow chart of an ultrasonic cleaning control method according to an embodiment of the present invention. Based on the tenth embodiment, steps S108 and S109 are further included. The method includes the following steps:

[0108] S101, introducing a cleaning medium into the inner cavity 1022 of the cleaning chamber through the liquid inlet 105;

[0109] S102, controlling the sampling needle to extend into the inner cavity 1022 of the cleaning chamber;

[0110] S103, turning on the ultrasonic transducer 103 to perform ultrasonic cleaning;

[0111] S104, draining the cleaning medium in the inner cavity 1022 of the cleaning chamber through the drain port 104;

[0112] S105, introducing cleaning water into the inner cavity 1012 of the main housing through the liquid inlet 105 to flush the inner cavity 1012 of the main housing;

[0113] S106, introducing cleaning water into the cleaning chamber 102 through the liquid inlet 105, so that the cleaning water flows out from the needle inlet 1021;

[0114] S107, draining the cleaning water in the inner cavity 1012 of the main shell and the inner cavity 1022 of the cleaning chamber through the drain port 104;

[0115] S108, controlling the sampling needle to move out of the inner cavity 1022 of the cleaning chamber;

[0116] S109, controlling the flushing of the inner wall of the sampling needle.

[0117] In step S108, the sampling needle is controlled to move out of the cleaning chamber 102. Specifically, the portion of the sampling needle that has been inserted into the cleaning chamber 102 is pushed out of the cleaning chamber 102, and then the sampling needle is moved away from the area where the projection of the cleaning chamber 102 is located.

[0118] In step S109, since the sampling needle is used to complete the actions of sample suction and sample discharge to achieve the purpose of sample transfer, the sampling needle is a hollow tube structure, and the inner and outer walls of the sampling needle are in contact with the sample during sampling. In steps S101 to S107, the inner wall of the sampling needle is mainly cleaned. To clean the inner wall of the sampling needle, it is necessary to introduce high-pressure clean water into the sampling needle and use the water pressure to clean the inner wall of the sampling needle. High-pressure water is introduced into one end of the sampling needle and discharged from the other end. Since the water pressure of the high-pressure water is high and the impact force when discharged is large, in order to avoid damage to the cleaning cabin 102 or the parts in the housing, the sampling needle is moved out of the cleaning cabin 102 before the inner wall of the sampling needle is rinsed.

[0119] Example 12

[0120] like Figure 8 As shown, this embodiment also provides an analyzer 200, including the ultrasonic cleaning device 100 of any one of Examples 1 to 9, the liquid discharge port 104 is connected to the second switch valve 203 and the negative pressure pump 204, the liquid inlet 105 is connected to the cleaning liquid pool 205 through the first switch valve 201 and the first power pump 202, and is connected to the cleaning water pool 206 through the third switch valve 208 and the second power pump 209.

[0121] In this embodiment, negative pressure pump 204 provides negative pressure to pump liquid out of liquid outlet 104, and second on-off valve 201 controls the connection between the liquid outlet 104 and negative pressure pump 204. Power pump 202 provides power to pump liquid into the liquid inlet 105. First on-off valve 203 controls the connection between the liquid inlet 105 and first power pump 202, and third on-off valve 208 controls the connection between the liquid inlet 105 and second power pump 209. By controlling first on-off valve 201, second on-off valve 203, and third on-off valve 208, the sampling needle can be cleaned.

[0122] In one embodiment, the following control is performed on the first switch valve 201 and the second switch valve 203 to implement the control method in the tenth embodiment:

[0123] S201, open the first switch valve 201 and close the second switch valve 203;

[0124] S202, close the first on-off valve 201, open the second on-off valve 203, and discharge the wastewater;

[0125] S203, opening the third switch valve 208;

[0126] S204, close the second switch valve 203 and continue to introduce cleaning water;

[0127] S205: Close the third switch valve 201, open the second switch valve 203, and discharge the waste water.

[0128] Execute step S201 to pass the cleaning liquid into the cleaning chamber 102 for subsequent ultrasonic cleaning. When the ultrasonic cleaning is completed, execute step S202 to discharge the waste water in the cleaning chamber 102. Connect the outlet end of the negative pressure pump 204 to the waste liquid pool 207, and the waste water can be discharged into the connected waste liquid pool 207. Execute step S203 to pass cleaning water into the inner cavity 1012 of the main shell to flush the inner cavity 1012 of the main shell. Execute step S204 to pass cleaning water into the cleaning chamber 102, so that the cleaning water flows out from the needle inlet 1021. Execute step S205 to discharge the waste liquid in the inner cavity 1012 of the main shell and the inner cavity 1022 of the cleaning chamber.

[0129] Other implementations and beneficial effects of the analyzer of this embodiment are equivalent to the beneficial effects of the above-mentioned ultrasonic cleaning device 100 and are not described in detail here.

[0130] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrasonic cleaning device, characterized in that: include: A main shell and a cleaning chamber, wherein one end of the cleaning chamber is provided with a needle entry port for inserting a needle, and the other end is connected to the main shell, and the inner cavity of the cleaning chamber communicates with the needle entry port and the inner cavity of the main shell; An ultrasonic transducer is provided on the main shell, and a vibration-generating portion of the ultrasonic transducer is located on a communication path between the inner cavity of the cleaning chamber and the inner cavity of the main shell; The main shell is provided with a liquid discharge port and a liquid inlet connected to the inner cavity of the main shell, respectively. The liquid discharge port is connected to the bottom of the inner cavity of the main shell.

2. The ultrasonic cleaning device according to claim 1, wherein The opening of the liquid inlet faces the ultrasonic transducer.

3. The ultrasonic cleaning device according to claim 2, wherein: The liquid inlet opening and the liquid outlet opening are arranged opposite to each other with the ultrasonic transducer spaced therebetween.

4. The ultrasonic cleaning device according to claim 1, wherein An annular groove is formed between the transducer and the inner wall of the main housing, and the liquid inlet and the liquid outlet are respectively communicated with the annular groove.

5. The ultrasonic cleaning device according to claim 1, wherein The main housing is interference-fitted with the ultrasonic transducer.

6. The ultrasonic cleaning device according to claim 1, wherein A wall extending from the main shell surrounds the cleaning chamber to form a waste liquid tank; The shell is also provided with a waste liquid port connected to the waste liquid tank.

7. The ultrasonic cleaning device according to claim 1, wherein The cleaning cabin and the main shell are an integrally formed structure, or the cleaning cabin and the main shell are threadedly connected, bonded or welded.

8. The ultrasonic cleaning device according to claim 6, wherein: The height of the surrounding wall is greater than the height of the cleaning cabin.

9. An ultrasonic cleaning control method, characterized in that: Applicable to the ultrasonic cleaning device according to any one of claims 1 to 9, the ultrasonic cleaning control method comprises: introducing a cleaning medium into the inner cavity of the cleaning chamber through a liquid inlet; Controlling the sampling needle to extend into the inner cavity of the cleaning chamber; Turn on the ultrasonic transducer and perform ultrasonic cleaning; Discharge the cleaning medium in the inner cavity of the cleaning chamber through the drain port; Introducing cleaning water into the inner cavity of the main shell through the liquid inlet to flush the inner cavity of the main shell; Introducing cleaning water into the inner cavity of the cleaning chamber through the liquid inlet, so that the cleaning water flows out from the needle inlet; The cleaning water in the inner cavity of the main shell and the inner cavity of the cleaning chamber is discharged through the drain port.

10. The ultrasonic cleaning control method according to claim 9, wherein: After draining the waste liquid from the inner cavity of the main shell and the inner cavity of the cleaning chamber, the method further includes: Controlling the sampling needle to move out of the inner cavity of the cleaning chamber; Control the flushing of the inner wall of the sampling needle.

11. An analyzer, characterized in that: It comprises an ultrasonic cleaning device as described in any one of claims 1 to 8, the discharge port is connected to the second switch valve and the negative pressure pump, the liquid inlet is connected to the cleaning liquid pool through the first switch valve and the first power pump, and is connected to the cleaning water pool through the third switch valve and the second power pump.

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