Liquid adding device

Abstract

The utility model discloses a liquid adding device, and belongs to the technical field of laboratory equipment. The liquid adding device comprises a handle body, a pump body, a liquid inlet pipe, a liquid outlet pipe, a detection assembly and a circuit board. The handle body is provided with a containing cavity. The pump body is arranged in the accommodating cavity; one end of the liquid inlet pipe is arranged outside the containing cavity and used for being connected with a liquid storage container, and the other end of the liquid inlet pipe penetrates through the handle body and is connected with the pump body. One end of the liquid outlet pipe is connected with the pump body, and the other end penetrates through the handle main body and is arranged outside the accommodating cavity; the detection assembly is arranged in the containing cavity and used for detecting the pressing force, the inclination angle of the handle body relative to the gravity direction or the magnetic field intensity. The circuit board is arranged in the containing cavity and electrically connected with the pump body and the detection assembly. According to the liquid adding device, the circuit board can control and adjust the suction speed of the pump body in real time according to the pressing force signal fed back by the detection assembly, the inclination angle signal of the handle body relative to the gravity direction or the magnetic field intensity signal, so that laboratory personnel can adjust the liquid flow speed in real time.

Description

Technical Field

[0001] The present application relates to the technical field of laboratory equipment, and in particular to a liquid adding device. Background Art

[0002] The liquid adding instrument is a device that is convenient for laboratory personnel to add liquids. Its appearance can make it easier for people to use. It not only has a simple structure but also is easy to operate.

[0003] However, most of the liquid adding instruments in the related art adjust the flow rate through a knob (or button) on the device and control the switch through a foot pedal. When one hand holds the beaker and the other hand holds the liquid adding handle, it is not convenient to adjust the flow rate in real time. Utility Model Content

[0004] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and to provide a liquid adding device to solve the technical problem in the prior art that it is inconvenient for laboratory personnel to adjust the liquid flow rate in real time.

[0005] To solve the above technical problems, this application provides:

[0006] A liquid adding device, comprising:

[0007] A handle body having a receiving cavity;

[0008] A pump body, disposed in the accommodating cavity;

[0009] A liquid inlet pipe, one end of which is arranged outside the accommodating cavity and is used to be connected to the liquid storage container, and the other end of which is passed through the handle body and connected to the pump body;

[0010] A liquid outlet pipe, one end of which is connected to the pump body, and the other end of which is passed through the handle body and is arranged outside the accommodating cavity;

[0011] A detection component, which is disposed in the accommodating cavity and is used to detect the pressing force, the tilt angle of the handle body relative to the gravity direction, or the magnetic field strength;

[0012] A circuit board is arranged in the accommodating cavity and is electrically connected to the pump body and the detection component respectively.

[0013] In addition, the liquid adding device according to the present application may also have the following additional technical features:

[0014] In some embodiments of the present application, the liquid adding device also includes a speed adjustment button, the detection component includes a first detection sensor, the handle body is provided with a first mounting hole, the first detection sensor is arranged on the circuit board and is electrically connected to the circuit board, and the first detection sensor is arranged toward the first mounting hole, a part of the speed adjustment button is arranged outside the accommodating cavity, and the other part is movably passed through the first mounting hole.

[0015] In some embodiments of the present application, the detection component further includes a second detection sensor, which is disposed in the accommodating cavity and electrically connected to the circuit board.

[0016] In some embodiments of the present application, the liquid adding device also includes a battery pack, the handle body is provided with a first mounting position adapted to the battery pack, the battery pack is electrically connected to the circuit board, and the cavity wall of the accommodating cavity is provided with a second mounting position adapted to the pump body.

[0017] In some embodiments of the present application, the handle body is provided with a first through hole and a second through hole, one end of the liquid inlet tube is arranged outside the accommodating cavity, and the other end is passed through the first through hole and connected to the pump body;

[0018] One end of the liquid outlet pipe is connected to the pump body, and the other end is passed through the second through hole and is arranged outside the accommodating cavity.

[0019] In some embodiments of the present application, a plurality of anti-slip strips are provided on the outer wall of the handle body, and the plurality of anti-slip strips are arranged at intervals along the circumferential direction and / or axial direction of the handle body.

[0020] In some embodiments of the present application, the liquid adding device also includes a power button, a key switch is arranged on the circuit board, a second mounting hole is opened in the handle body, the key switch is arranged toward the second mounting hole, a part of the power button is arranged outside the accommodating cavity, and the other part is movably passed through the second mounting hole and abuts against the key switch.

[0021] A liquid adding device, comprising:

[0022] Device body;

[0023] A pump body, arranged on the device body;

[0024] A liquid inlet pipe, one end of which is connected to the liquid storage container, and the other end of which is connected to the pump body;

[0025] A handle body is provided separately from the device body, and the handle body has a receiving cavity, a first through hole and a second through hole;

[0026] a liquid outlet pipe, one end of which is connected to the pump body, and the other end of which is sequentially passed through the first through hole, the accommodating cavity, and the second through hole;

[0027] A detection component, the detection component is arranged in the accommodating cavity and is used to detect the pressing force or the tilt angle of the handle body relative to the gravity direction;

[0028] A circuit board is arranged in the device body and is electrically connected to the pump body and the detection component respectively.

[0029] In some embodiments of the present application, the liquid adding device also includes a speed adjustment button, the detection component includes a first detection sensor, the handle body is provided with a first mounting hole, the first detection sensor is arranged in the accommodating cavity and is electrically connected to the circuit board, and the first detection sensor is arranged toward the first mounting hole, a part of the speed adjustment button is arranged outside the accommodating cavity, and the other part is movably passed through the first mounting hole.

[0030] In some embodiments of the present application, the detection component further includes a second detection sensor, which is disposed in the accommodating cavity and electrically connected to the circuit board.

[0031] Compared with the prior art, the beneficial effects of this application are:

[0032] The present application proposes a liquid adding device, which includes a handle body, a pump body, a liquid inlet pipe, a liquid outlet pipe, a detection component and a circuit board. The handle body has a receiving cavity, and the pump body and the circuit board are both arranged in the receiving cavity. By connecting the two ends of the liquid inlet pipe to the liquid storage container and the pump body respectively, and connecting one end of the liquid outlet pipe to the pump body, and the other end is arranged through the handle body and arranged outside the receiving cavity, so that under the suction action of the pump body, the liquid in the liquid storage container enters the pump body through the liquid inlet pipe and is discharged from the liquid outlet pipe, thereby realizing the liquid adding function of the liquid adding device. By arranging a detection component for detecting the pressing force, the tilt angle of the handle body relative to the direction of gravity or the magnetic field strength in the receiving cavity, and electrically connecting the circuit board to the pump body and the detection component respectively, the circuit board can control and adjust the suction speed of the pump body in real time according to the pressing force signal fed back by the detection component, the tilt angle signal of the handle body relative to the direction of gravity or the magnetic field strength signal, so as to facilitate laboratory personnel to adjust the liquid flow rate in real time.

[0033] In another embodiment of the present application, the liquid adding device includes a device body, a pump body, a liquid inlet pipe, a handle body, a liquid outlet pipe, a detection component and a circuit board, the pump body is arranged on the device body, the circuit board is arranged in the device body, the handle body is arranged separately from the device body, and the handle body has a receiving cavity, a first through hole and a second through hole. By connecting the two ends of the liquid inlet pipe to the liquid storage container and the pump body respectively, and connecting one end of the liquid outlet pipe to the pump body, and the other end is sequentially penetrated through the first through hole, the receiving cavity and the second through hole, so that the liquid in the liquid storage container enters the pump body through the liquid inlet pipe and is discharged from the liquid outlet pipe under the suction action of the pump body, thereby realizing the liquid adding function of the liquid adding device. By arranging a detection component for detecting the pressing force, the tilt angle of the handle body relative to the direction of gravity or the magnetic field strength in the receiving cavity, and electrically connecting the circuit board to the pump body and the detection component respectively, the circuit board can control and adjust the suction speed of the pump body in real time according to the pressing force signal fed back by the detection component, the tilt angle signal of the handle body relative to the direction of gravity or the magnetic field strength signal, so as to facilitate laboratory personnel to adjust the liquid flow rate in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A three-dimensional schematic diagram of a liquid adding device in some embodiments of the present application is shown. Figure 1 ;

[0036] Figure 2 A three-dimensional schematic diagram of a liquid adding device in some embodiments of the present application is shown. Figure 2 ;

[0037] Figure 3 A schematic cross-sectional view of a liquid adding device in some embodiments of the present application is shown;

[0038] Figure 4 A schematic diagram showing the connection between the liquid adding device and the liquid storage container in some embodiments of the present application is shown;

[0039] Figure 5 A schematic diagram showing the connection between the liquid adding device and the liquid storage container in other embodiments of the present application is shown.

[0040] Description of main component symbols:

[0041] 100-liquid adding device; 110-handle body; 111-accommodating chamber; 1111-second mounting position; 112-first mounting hole; 113-first mounting position; 114-first through hole; 115-second through hole; 116-anti-slip strip; 120-pump body; 130-liquid inlet pipe; 140-liquid outlet pipe; 150-detection component; 151-first detection sensor; 152-second detection sensor; 160-circuit board; 170-speed adjustment button; 180-battery pack; 190-device body; 200-liquid storage container. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and 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 having 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 application, and cannot be understood as limiting the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present application provides a liquid adding device 100, which is mainly used by laboratory personnel to add liquid to a beaker. The liquid adding device 100 includes a handle body 110, a pump body 120, a liquid inlet pipe 130, a liquid outlet pipe 140, a detection component 150 and a circuit board 160.

[0048] See also Figure 4 , wherein the handle body 110 has a receiving cavity 111, and the pump body 120 is disposed in the receiving cavity 111. One end of the liquid inlet pipe 130 is disposed outside the receiving cavity 111, and is used to be connected to the liquid storage container 200, and the other end is passed through the handle body 110 and connected to the pump body 120. One end of the liquid outlet pipe 140 is connected to the pump body 120, and the other end is passed through the handle body 110 and disposed outside the receiving cavity 111.

[0049] The detection assembly 150 is disposed in the accommodating cavity 111 and is used to detect the pressing force, the tilt angle of the handle body 110 relative to the gravity direction or the magnetic field strength. The circuit board 160 is disposed in the accommodating cavity 111 and is electrically connected to the pump body 120 and the detection assembly 150 respectively.

[0050] The liquid adding device 100 provided in the embodiment of the present application is configured such that the two ends of the liquid inlet pipe 130 are respectively connected to the liquid storage container 200 and the pump body 120, and one end of the liquid outlet pipe 140 is connected to the pump body 120, and the other end is arranged through the handle body 110 and arranged outside the accommodating chamber 111, so that the liquid in the liquid storage container 200 enters the pump body 120 through the liquid inlet pipe 130 and is discharged from the liquid outlet pipe 140 under the suction action of the pump body 120, thereby realizing the liquid adding function of the liquid adding device 100. By arranging a detection component 150 for detecting the pressing force, the tilt angle of the handle body 110 relative to the direction of gravity, or the magnetic field strength in the accommodating chamber 111, and electrically connecting the circuit board 160 to the pump body 120 and the detection component 150, the circuit board 160 can control and adjust the suction speed of the pump body 120 in real time according to the pressing force signal fed back by the detection component 150, the tilt angle signal of the handle body 110 relative to the direction of gravity, or the magnetic field strength signal, so that the laboratory personnel can adjust the liquid flow rate in real time.

[0051] like Figure 1 and Figure 3 As shown, in one embodiment of the present application, optionally, the liquid adding device 100 also includes a speed adjustment button 170, the detection component 150 includes a first detection sensor 151, the handle body 110 is provided with a first mounting hole 112, the first detection sensor 151 is arranged on the circuit board 160 and is electrically connected to the circuit board 160, and the first detection sensor 151 is arranged toward the first mounting hole 112, a part of the speed adjustment button 170 is arranged outside the accommodating cavity 111, and the other part is movably passed through the first mounting hole 112.

[0052] In this embodiment, the first detection sensor 151 is arranged on the circuit board 160 and is electrically connected to the circuit board 160 and is arranged toward the first mounting hole 112, and a part of the speed regulating button 170 is arranged outside the accommodating cavity 111, and the other part is movably arranged in the first mounting hole 112 and abuts against the first detection sensor 151, so that the first detection sensor 151 can sense the pressing force of the speed regulating button 170 on it, and feed back the pressing force signal to the circuit board 160, and the circuit board 160 controls the suction speed of the pump body 120 in real time according to the pressing force signal fed back by the first detection sensor 151. As a result, the laboratory personnel can control the liquid flow rate by pressing the speed regulating button 170 with their fingers and according to the size of the pressing force. The flow rate is zero when it is not pressed, and the flow rate is the maximum when it is pressed to the extreme position. The structure is simple and the operation is convenient.

[0053] Exemplarily, the first detection sensor 151 may be a pressure sensor.

[0054] In another embodiment, the first detection sensor 151 is arranged on the circuit board 160 and is electrically connected to the circuit board 160 and arranged toward the first mounting hole 112, and a part of the speed control button 170 is arranged outside the accommodating cavity 111, and the other part is movably arranged in the first mounting hole 112 to approach or move away from the first detection sensor 151, and a permanent magnet is arranged in the speed control button 170, and the permanent magnet follows the speed control button 170 to synchronously approach or move away from the first detection sensor 151, so that the strength of the magnetic field is sensed by the first detection sensor 151 to judge the distance between the permanent magnet and the first detection sensor 151, so as to judge the depth of the speed control button 170. In this way, the circuit board 160 can control the suction speed of the pump body 120 in real time according to the magnetic field strength signal fed back by the first detection sensor 151. Therefore, the laboratory personnel can control the liquid flow rate by pressing the speed control button 170 with their fingers and according to the depth of the pressing, the flow rate is zero when not pressed, and the flow rate is the maximum when pressed to the extreme position, and the structure is simple and easy to operate.

[0055] Exemplarily, the first detection sensor 151 may be a Hall sensor, and the speed adjustment button 170 and the permanent magnet may be integrally formed.

[0056] like Figure 1 and Figure 3 As shown, in one embodiment of the present application, optionally, the detection component 150 also includes a second detection sensor 152 , and the second detection sensor 152 is disposed in the accommodating cavity 111 and is electrically connected to the circuit board 160 .

[0057] In this embodiment, a second detection sensor 152 electrically connected to the circuit board 160 is arranged in the accommodating cavity 111 to detect the inclination angle of the handle body 110 relative to the gravity direction, and the inclination angle signal is fed back to the circuit board 160. The circuit board 160 controls and adjusts the suction speed of the pump body 120 in real time according to the inclination angle signal fed back by the second detection sensor 152. Thus, laboratory personnel can change the inclination angle of the handle body 110 by hand gripping and control and adjust the liquid flow rate according to the inclination angle. The flow rate is zero when the handle body 110 is horizontal, and the flow rate is maximum when the handle body 110 is vertically downward. The structure is simple and the operation is convenient.

[0058] Exemplarily, the second measuring sensor may be an acceleration sensor.

[0059] like Figure 2 and Figure 3As shown, in one embodiment of the present application, optionally, the liquid adding device 100 also includes a battery pack 180, the handle body 110 is provided with a first mounting position 113 adapted to the battery pack 180, the battery pack 180 is electrically connected to the circuit board 160, and the cavity wall of the accommodating cavity 111 is provided with a second mounting position 1111 adapted to the pump body 120.

[0060] In this embodiment, a first mounting position 113 adapted to the battery pack 180 is provided on the handle body 110, and the battery pack 180 is electrically connected to the circuit board 160, so as to realize the power supply function of the liquid adding device 100. A second mounting position 1111 adapted to the pump body 120 is provided on the cavity wall of the accommodating cavity 111, so that the pump body 120 is stably installed in the accommodating cavity 111, thereby ensuring the stability and reliability of the liquid pumping function.

[0061] Illustratively, the battery pack 180 may be a primary battery or a secondary battery.

[0062] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, optionally, the handle body 110 is provided with a first through hole 114 and a second through hole 115, one end of the liquid inlet pipe 130 is arranged outside the accommodating cavity 111, and the other end is passed through the first through hole 114 and connected to the pump body 120. One end of the liquid outlet pipe 140 is connected to the pump body 120, and the other end is passed through the second through hole 115 and arranged outside the accommodating cavity 111. Thus, the liquid in the liquid storage container 200 can enter the pump body 120 in the accommodating cavity 111 through the liquid inlet pipe 130, and be discharged from the liquid outlet pipe 140 under the pumping action of the pump body 120, thereby realizing the liquid adding function.

[0063] like Figure 1 As shown, in one embodiment of the present application, optionally, a plurality of anti-slip strips 116 are provided on the outer wall of the handle body 110 , and the plurality of anti-slip strips 116 are arranged at intervals along the circumferential direction and / or axial direction of the handle body 110 .

[0064] In this embodiment, a plurality of anti-slip strips 116 are provided on the outer wall of the handle body 110 and are spaced apart along the circumferential direction and / or axial direction of the handle body 110 to provide an anti-slip effect, thereby preventing the handle body 110 from sliding or falling out of the hands of the laboratory personnel during the liquid adding operation, thereby ensuring the stability of the liquid adding operation.

[0065] In one embodiment of the present application, optionally, the liquid adding device 100 also includes a power button, a button switch is arranged on the circuit board 160, the handle body 110 is provided with a second mounting hole, the button switch is arranged toward the second mounting hole, a part of the power button is arranged outside the accommodating cavity 111, and the other part is movably passed through the second mounting hole and abuts against the button switch.

[0066] In this embodiment, a key switch is arranged on the circuit board 160 and is arranged toward the second mounting hole, and a part of the power key is arranged outside the accommodating cavity 111, and the other part is movably inserted into the second mounting hole and abuts against the key switch. Thus, laboratory personnel can open or close the liquid adding device 100 by pressing the power key with their fingers. When the liquid adding operation is not required, the liquid adding device 100 can be closed by pressing the power key to avoid accidental touch causing the pump body 120 to work and causing liquid leakage in the liquid storage container 200, thereby saving resources and ensuring safety.

[0067] like Figure 5 As shown, in another embodiment of the present application, the liquid adding device 100 includes a device body 190 , a pump body 120 , a liquid inlet pipe 130 , a handle body 110 , a liquid outlet pipe 140 , a detection component 150 and a circuit board 160 .

[0068] The pump body 120 is disposed on the device body 190, one end of the liquid inlet pipe 130 is used to connect with the liquid storage container 200, and the other end is connected to the pump body 120. The handle body 110 is disposed separately from the device body 190, and the handle body 110 has a receiving cavity 111, a first through hole 114, and a second through hole 115. One end of the liquid outlet pipe 140 is connected to the pump body 120, and the other end is sequentially penetrated through the first through hole 114, the receiving cavity 111, and the second through hole 115.

[0069] The detection assembly 150 is disposed in the accommodating cavity 111 and is used to detect the pressing force, the tilt angle of the handle body 110 relative to the gravity direction or the magnetic field strength. The circuit board 160 is disposed in the device body 190 and is electrically connected to the pump body 120 and the detection assembly 150 respectively.

[0070] The liquid adding device 100 provided in the embodiment of the present application is achieved by connecting the two ends of the liquid inlet pipe 130 to the liquid storage container 200 and the pump body 120 respectively, and connecting one end of the liquid outlet pipe 140 to the pump body 120, and the other end is sequentially penetrated through the first through hole 114, the accommodating cavity 111 and the second through hole 115, so that under the suction action of the pump body 120, the liquid in the liquid storage container 200 enters the pump body 120 through the liquid inlet pipe 130 and is discharged from the liquid outlet pipe 140, thereby realizing the liquid adding function of the liquid adding device 100. By arranging a detection component 150 for detecting the pressing force, the inclination angle of the handle body 110 relative to the direction of gravity or the magnetic field strength in the accommodating cavity 111, and electrically connecting the circuit board 160 to the pump body 120 and the detection component 150 respectively, the circuit board 160 can control and adjust the suction speed of the pump body 120 in real time according to the pressing force signal fed back by the detection component 150, the inclination angle signal of the handle body 110 relative to the direction of gravity or the magnetic field strength signal, thereby facilitating laboratory personnel to adjust the liquid flow rate in real time.

[0071] In one embodiment of the present application, optionally, the liquid adding device 100 also includes a speed adjustment button 170, the detection component 150 includes a first detection sensor 151, the handle body 110 is provided with a first mounting hole 112, the first detection sensor 151 is arranged in the accommodating cavity 111 and is electrically connected to the circuit board 160, and the first detection sensor 151 is arranged toward the first mounting hole 112, a part of the speed adjustment button 170 is arranged outside the accommodating cavity 111, and the other part is movably passed through the first mounting hole 112.

[0072] In this embodiment, by arranging the first detection sensor 151 in the accommodating chamber 111 and electrically connecting it to the circuit board 160 and arranging it toward the first mounting hole 112, the first detection sensor 151 and the circuit board 160 can be electrically connected by a signal line or a wireless connection, and by arranging a part of the speed regulating button 170 outside the accommodating chamber 111, and the other part is movably arranged in the first mounting hole 112 and abutting against the first detection sensor 151, so that the first detection sensor 151 can sense the pressing force of the speed regulating button 170 on it, and feed back the pressing force signal to the circuit board 160, and the circuit board 160 controls the suction speed of the pump body 120 in real time according to the pressing force signal fed back by the first detection sensor 151. Thus, the laboratory personnel can press the speed regulating button 170 by fingers and control the liquid flow rate according to the size of the pressing force. The flow rate is zero when it is not pressed, and the flow rate is the maximum when it is pressed to the limit position. The structure is simple and the operation is convenient. Exemplarily, the first detection sensor 151 can be a pressure sensor.

[0073] In another embodiment, the first detection sensor 151 is arranged in the accommodating cavity 111 and electrically connected to the circuit board 160 and arranged toward the first mounting hole 112. The first detection sensor 151 and the circuit board 160 can be electrically connected by a signal line or a wireless connection. A portion of the speed control button 170 is arranged outside the accommodating cavity 111, and the other portion is movably arranged in the first mounting hole 112 to approach or move away from the first detection sensor 151. A permanent magnet is arranged in the speed control button 170, and the permanent magnet follows the speed control button 170 to approach or move away from the first detection sensor 151 synchronously, so that the first detection sensor 151 senses the strength of the magnetic field to determine the distance between the permanent magnet and the first detection sensor 151, thereby determining the depth of the pressing of the speed control button 170. In this way, the circuit board 160 can control and adjust the suction speed of the pump body 120 in real time according to the magnetic field strength signal fed back by the first detection sensor 151. Thus, laboratory personnel can control the liquid flow rate by pressing the speed control button 170 with their fingers and according to the depth of the pressing, the flow rate is zero when not pressed, and the flow rate is maximum when pressed to the limit position, with a simple structure and convenient operation. Exemplarily, the first detection sensor 151 can be a Hall sensor, and the speed control button 170 and the permanent magnet can be integrally formed.

[0074] In an embodiment of the present application, optionally, the detection component 150 further includes a second detection sensor 152 , which is disposed in the accommodating cavity 111 and electrically connected to the circuit board 160 .

[0075] In this embodiment, a second detection sensor 152 electrically connected to the circuit board 160 is provided in the accommodating cavity 111 to detect the inclination angle of the handle body 110 relative to the direction of gravity, and the inclination angle signal is fed back to the circuit board 160. The first detection sensor 151 can be electrically connected to the circuit board 160 by a signal line or a wireless connection. The circuit board 160 controls and adjusts the suction speed of the pump body 120 in real time according to the inclination angle signal fed back by the second detection sensor 152. Thus, laboratory personnel can change the inclination angle of the handle body 110 by hand gripping and control and adjust the liquid flow rate according to the inclination angle. The flow rate is zero when the handle body 110 is horizontal, and the flow rate is maximum when the handle body 110 is vertically downward. The structure is simple and the operation is convenient. Exemplarily, the second detection sensor can be an acceleration sensor.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0077] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A liquid adding device, characterized in that: include: A handle body having a receiving cavity; A pump body, disposed in the accommodating cavity; A liquid inlet pipe, one end of which is arranged outside the accommodating cavity and is used to be connected to the liquid storage container, and the other end of which is passed through the handle body and connected to the pump body; A liquid outlet pipe, one end of which is connected to the pump body, and the other end of which is passed through the handle body and is arranged outside the accommodating cavity; A detection component, which is disposed in the accommodating cavity and is used to detect the pressing force, the tilt angle of the handle body relative to the gravity direction, or the magnetic field strength; A circuit board is arranged in the accommodating cavity and is electrically connected to the pump body and the detection component respectively.

2. The liquid adding device according to claim 1, characterized in that: The liquid adding device also includes a speed regulating button, the detection component includes a first detection sensor, the handle body is provided with a first mounting hole, the first detection sensor is arranged on the circuit board and is electrically connected to the circuit board, and the first detection sensor is arranged toward the first mounting hole, a part of the speed regulating button is arranged outside the accommodating cavity, and the other part is movably passed through the first mounting hole.

3. The liquid adding device according to claim 1, characterized in that: The detection component also includes a second detection sensor, which is disposed in the accommodating cavity and electrically connected to the circuit board.

4. The liquid adding device according to claim 1, characterized in that: The liquid adding device also includes a battery pack, the handle body is provided with a first mounting position adapted to the battery pack, the battery pack is electrically connected to the circuit board, and the cavity wall of the accommodating cavity is provided with a second mounting position adapted to the pump body.

5. The liquid adding device according to claim 1, characterized in that: The handle body is provided with a first through hole and a second through hole, one end of the liquid inlet pipe is arranged outside the accommodating cavity, and the other end is passed through the first through hole and connected to the pump body; One end of the liquid outlet pipe is connected to the pump body, and the other end is passed through the second through hole and is arranged outside the accommodating cavity.

6. The liquid adding device according to claim 1, characterized in that: A plurality of anti-slip strips are arranged on the outer wall of the handle body, and the plurality of anti-slip strips are arranged at intervals along the circumferential direction and / or axial direction of the handle body.

7. The liquid adding device according to claim 1, characterized in that: The liquid adding device also includes a power button, a button switch is arranged on the circuit board, a second mounting hole is opened in the handle body, the button switch is arranged toward the second mounting hole, a part of the power button is arranged outside the accommodating cavity, and the other part is movably passed through the second mounting hole and abuts against the button switch.

8. A liquid adding device, characterized in that: include: Device body; A pump body, arranged on the device body; A liquid inlet pipe, one end of which is connected to the liquid storage container, and the other end of which is connected to the pump body; A handle body is provided separately from the device body, and the handle body has a receiving cavity, a first through hole and a second through hole; a liquid outlet pipe, one end of which is connected to the pump body, and the other end of which is sequentially passed through the first through hole, the accommodating cavity, and the second through hole; A detection component, the detection component is arranged in the accommodating cavity and is used to detect the pressing force or the tilt angle of the handle body relative to the gravity direction; A circuit board is arranged in the device body and is electrically connected to the pump body and the detection component respectively.

9. The liquid adding device according to claim 8, characterized in that: The liquid adding device also includes a speed regulating button, the detection component includes a first detection sensor, the handle body is provided with a first mounting hole, the first detection sensor is arranged in the accommodating cavity and is electrically connected to the circuit board, and the first detection sensor is arranged toward the first mounting hole, a part of the speed regulating button is arranged outside the accommodating cavity, and the other part is movably passed through the first mounting hole.

10. The liquid adding device according to claim 8, characterized in that: The detection component also includes a second detection sensor, which is disposed in the accommodating cavity and electrically connected to the circuit board.

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