Automatic liquid feed sampling device

Abstract

The utility model provides an automatic liquid feed sampling device, and belongs to the technical field of feed sampling equipment. The sampling device comprises a sampling rod, a liquid outlet pipe, a sampling inner container, a sampling piston, a driving rod and a translation driving piece. The sampling rod is provided with a sampling groove, a liquid outlet groove and a liquid outlet; the sampling groove opening is positioned on the front end surface of the sampling rod; the liquid outlet groove corresponds to the bottom of the sampling groove, and the opening is positioned on the side wall of the sampling groove; the liquid outlet is formed in the side wall of the sampling rod and is communicated with the liquid outlet groove and the liquid outlet pipe. The sampling inner container is contained in the sampling groove, and sampling filter holes communicated with the liquid outlet groove are formed in the side wall of the sampling inner container. The sampling piston is in sliding sealing fit with the side wall of the sampling inner container. The driving rod movably penetrates through the bottom wall of the sampling liner and the sampling rod, and the front end of the driving rod is connected with the sampling piston. The translation driving piece is in transmission connection with the driving rod, so that the driving rod drives the sampling piston to reciprocate in the sampling liner. According to the sampling device, solid-liquid separation can be realized in the sampling process, and sampling steps can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of feed sampling equipment, and more particularly, to an automatic liquid feed sampling device. Background Art

[0002] Liquid feed includes a liquid phase component and a solid phase component. When performing quality analysis and the like, it is usually necessary to detect the liquid phase and the solid phase separately. In the current detection process, usually, the liquid feed of the mixed phase is sampled first, and then solid-liquid separation is carried out by means of standing still and the like, and then the liquid phase component and the solid phase component are detected separately. There are many sampling steps in this process, which affects the sampling and detection efficiency. Summary of the Utility Model

[0003] The purpose of this application is to provide an automatic liquid feed sampling device, which can achieve solid-liquid separation during the sampling process, reduce the sampling steps and improve the sampling efficiency.

[0004] The embodiments of this application are implemented as follows:

[0005] The embodiments of this application provide an automatic liquid feed sampling device, including a sampling rod, a liquid outlet pipe, a sampling inner liner, a sampling piston, a driving rod and a translational driving member; the sampling rod is provided with a sampling groove, a liquid outlet groove and a liquid outlet; the opening of the sampling groove is located at the front end face of the sampling rod; the liquid outlet groove corresponds to the bottom of the sampling groove, and the opening of the liquid outlet groove is located on the groove side wall of the sampling groove; the liquid outlet is opened on the side wall of the sampling rod, and the liquid outlet is communicated with the liquid outlet groove; the liquid outlet pipe is communicated with the liquid outlet; the sampling inner liner is accommodated in the sampling groove, and the side wall of the sampling inner liner is provided with sampling filter holes communicated with the liquid outlet groove; the sampling piston is slidably and sealingly matched with the side wall of the sampling inner liner along the axial direction of the sampling rod; the driving rod is movably inserted through the bottom wall of the sampling inner liner and the sampling rod along the axial direction of the sampling rod, and the front end of the driving rod is connected with the sampling piston; the translational driving member is installed on the sampling rod; the translational driving member is in transmission connection with the driving rod to make the driving rod reciprocate between a first position, a second position and a third position; wherein, when the driving rod is in the first position, the sampling piston is located at the opening of the sampling inner liner; when the driving rod is in the second position, the sampling piston corresponds to the boundary between the area of the side wall of the sampling inner liner where the sampling filter holes are opened and the area where the sampling filter holes are not opened; when the driving rod is in the third position, the sampling piston is located at the bottom of the sampling inner liner, so that the sampling filter holes are communicated with the opening of the sampling inner liner.

[0006] The automatic sampling device for liquid feed provided in the embodiment of the present application has a sampling slot and a liquid outlet slot at the front end of the sampling rod, and the liquid outlet slot is connected to the sampling slot from the side of the sampling slot; the sampling liner is placed in the sampling slot, and the sampling liner is provided with a sampling filter hole connected to the liquid outlet slot, so that the interior of the sampling liner can be connected to the liquid outlet slot through the sampling filter hole. By controlling the driving rod to drive the sampling piston to move in the sampling liner, the liquid feed can be first sucked into the sampling liner, and then the solid-liquid separation of the liquid feed can be achieved through the filtering effect of the sampling filter hole, thereby reducing the sampling steps and improving the sampling efficiency.

[0007] In some embodiments, the sampling rod includes a front section, a middle section and a rear section of the rod body which are sequentially distributed along the axial direction; the sampling groove is opened in the front section of the rod body; a driving movable cavity is opened in the middle section of the rod body, and the middle section of the driving rod can be movably accommodated in the driving movable cavity; and the translational driving member is installed in the rear section of the rod body.

[0008] In some embodiments, the automatic sampling device for liquid feed also includes a rotating drive member, which is installed in the middle section of the rod body; the sampling liner is rotatably embedded in the sampling groove; the driving rod includes a rotating section and a translational section, and the translational section is rotatably connected to the rear end of the rotating section; the translational drive member is transmission-connected to the translational section; the rotating section is transmission-connected to the rotating drive member; the rotating section is transmission-connected to the bottom of the sampling liner, so that the rotating section drives the sampling liner to rotate.

[0009] In some embodiments, the power output end of the rotating driving member is transmission-connected with a driving ring, and the driving ring is rotatably connected to the middle section of the rod body along the circumference of the sampling rod; a driving protrusion that is detachably matched with the driving ring is convexly provided on the side wall of one end of the rotating section close to the translational section, and the driving protrusion is movably accommodated in the driving activity cavity; when the driving rod is in the third position, the driving protrusion is embedded in the driving ring, so that the driving ring drives the driving protrusion to rotate.

[0010] In some embodiments, the inner diameter of the sampling liner gradually increases when approaching from the opening of the sampling liner toward the bottom of the sampling liner.

[0011] In some embodiments, the liquid feed automatic sampling device further comprises a flip cover, which is used to open and close the opening of the sampling liner.

[0012] In some embodiments, the flap is connected to the front section of the rod body through an elastic reset member, and the elastic reset member is used to drive the flap to be in a state of opening the opening of the sampling liner; the liquid feed automatic sampling device also includes an opening and closing drive member; the opening and closing drive member is installed on the front section of the rod body, and is used to drive the flap to be in a state of closing the opening of the sampling liner.

[0013] In some embodiments, the liquid feed automatic sampling device further includes a trigger button, which is installed on the wall of the driving cavity; the trigger button is communicatively connected to the opening and closing driving member; a positioning protrusion is convexly provided on the side wall of the driving rod, and the positioning protrusion is movably received in the driving cavity; when the driving rod is located between the second position and the third position, the positioning protrusion touches the trigger button.

[0014] In some embodiments, the positioning protrusion is located on the side wall of the rotating section, and axially of the sampling rod, the positioning protrusion is located on the side of the rotating driving member close to the front section of the rod body; when the driving rod is located between the third positions, the positioning protrusion touches the trigger button.

[0015] In some embodiments, a sliding flange is convexly provided on the inner side of the front end opening of the driving cavity, and the side wall of the rotating section is slidably matched with the sliding flange; when the driving rod is located at the first position, the positioning protrusion abuts against the side wall of the sliding flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0017] Figure 1 FIG. 1 is a schematic structural diagram of the first working state of a liquid feed automatic sampling device provided by an embodiment of the present application in the first placement orientation;

[0018] Figure 2 FIG. 2 is a schematic structural diagram of the second working state of a liquid feed automatic sampling device provided by an embodiment of the present application in the first placement orientation;

[0019] Figure 3 FIG. Figure 2 is a partial enlarged view of III in FIG.

[0020] Figure 4 FIG. 3 is a schematic structural diagram of the second working state of a liquid feed automatic sampling device provided by an embodiment of the present application in the second placement orientation;

[0021] Figure 5 FIG. 4 is a schematic structural diagram of the third working state of a liquid feed automatic sampling device provided by an embodiment of the present application in the second placement orientation;

[0022] Figure 6 FIG. Figure 5 is a partial enlarged view of VI in FIG.

[0023] ICON:

[0024] 100 - Automatic Sampling Device for Liquid Feed;

[0025] 110 - Sampling Rod; 111 - Sampling Groove; 112 - Liquid Outlet Groove; 113 - Liquid Outlet; 114 - Driving Activity Chamber; 115 - Sliding Flange;

[0026] 120 - Liquid Outlet Pipe;

[0027] 130 - Sampling Inner Liner; 131 - Sampling Filter Holes;

[0028] 140 - Sampling Piston;

[0029] 150 - Driving Rod; 151 - Rotating Section; 1511 - Driving Projection; 1512 - Positioning Projection; 152 - Translating Section;

[0030] 160 - Translating Driving Component;

[0031] 170 - Rotating Driving Component; 171 - Driving Ring;

[0032] 180 - Flap; 181 - Rotating Elastic Reset Component;

[0033] 190 - Opening and Closing Driving Component;

[0034] 1100 - Trigger Button. Detailed Implementation Manner

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Usually, the components of the embodiments of this application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0037] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. It is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application.

[0039] In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0040] In addition, terms such as "vertical" and "parallel" do not mean that the components are required to be absolutely vertical or parallel, but can be slightly inclined.

[0041] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] The technical solutions of the present application will be exemplarily described below through some embodiments.

[0043] See Figures 1 to 3 , an automatic liquid feed sampling device 100 provided by an embodiment of the present application includes a sampling rod 110, a liquid outlet pipe 120, a sampling inner tank 130, a sampling piston 140, a driving rod 150, and a translational driving member 160.

[0044] The sampling rod 110 is provided with a sampling groove 111, a liquid outlet groove 112, and a liquid outlet 113. Among them, the opening of the sampling groove 111 is located at the front end face of the sampling rod 110. In other words, the sampling groove 111 is recessed in the front end face of the sampling rod 110. The liquid outlet groove 112 corresponds to the bottom of the sampling groove 111, and the opening of the liquid outlet groove 112 is located on the groove side wall of the sampling groove 111; that is to say, the liquid outlet groove 112 is located on the side of the sampling groove 111 and is communicated with the cavity at the bottom of the sampling groove 111; as an example, the liquid outlet groove 112 is arranged in a circumferential ring along the sampling rod 110, that is, the liquid outlet groove 112 is an annular groove recessed in the groove side wall of the sampling groove 111. The liquid outlet 113 is opened on the side wall of the sampling rod 110, and the liquid outlet 113 is communicated with the liquid outlet groove 112; as an example, the liquid outlet 113 is communicated with one end of the liquid outlet groove 112 away from the opening of the sampling groove 111.

[0045] The liquid outlet pipe 120 is communicated with the liquid outlet 113.

[0046] The sampling inner container 130 is placed in the sampling tank 111. It can be understood that the sampling inner container 130 can be fixed in the sampling tank 111 or placed in the sampling tank 111 in a detachable manner. Generally, after the sampling inner container 130 is placed in the sampling tank 111, in the axial direction of the sampling rod 110, the sampling inner container 130 and the sampling tank 111 are relatively fixed. Refer to Figure 3 , a sampling filter hole 131 communicating with the liquid outlet groove 112 is formed in the side wall of the sampling inner container 130; that is to say, the sampling filter hole 131 is formed in the part of the side wall of the sampling inner container 130 close to the bottom of the sampling tank 111, and the sampling filter hole 131 communicates the inside of the sampling inner container 130 with the liquid outlet groove 112. As an example, a plurality of sampling filter holes 131 are provided, and the plurality of sampling filter holes 131 are distributed in an array along the circumferential and axial directions of the sampling rod 110 on the sampling inner container 130.

[0047] The sampling piston 140 is slidably and sealingly fitted with the side wall of the sampling inner container 130 along the axial direction of the sampling rod 110; by way of example, the sampling piston 140 is a rubber piston.

[0048] The driving rod 150 is movably disposed through the bottom wall of the sampling inner container 130 and the sampling rod 110 along the axial direction of the sampling rod 110. Generally, the driving rod 150 is slidably and sealingly fitted with the bottom wall of the sampling inner container 130. The front end of the driving rod 150 is connected to the sampling piston 140 and is used to drive the sampling piston 140 to move.

[0049] The translational driving member 160 refers to a driving device capable of outputting linear motion, such as a linear motor, etc. The translational driving member 160 is installed on the sampling rod 110; the translational driving member 160 is in transmission connection with the driving rod 150 so that the driving rod 150 reciprocates between a first position, a second position and a third position; that is to say, the driving rod 150 can reciprocate between the first position and the second position, and the driving rod 150 can also reciprocate between the second position and the third position. During the working process, the driving rod 150 can move from the first position to the second position, then from the second position to the third position, and then the driving rod 150 can move from the third position to the second position, and then from the second position to the first position.

[0050] Among them, refer to Figure 1 , when the driving rod 150 is in the first position, the sampling piston 140 is located at the opening of the sampling inner container 130, and at this time the sampling device is in an initial state. Refer to Figure 2 and Figure 4, when the drive rod 150 is in the second position, the sampling piston 140 is corresponding to the boundary between the area of the side wall of the sampling inner tank 130 where the sampling filter hole 131 is opened and the area where the sampling filter hole 131 is not opened. At this time, the cavity behind the sampling piston 140 in the sampling inner tank 130 is communicated with the liquid outlet groove 112 through the sampling filter hole 131; see Figure 5 , when the drive rod 150 is in the third position, the sampling piston 140 is located at the bottom of the sampling inner tank 130 to make the sampling filter hole 131 communicate with the opening of the sampling inner tank 130. At this time, the cavity in front of the sampling piston 140 in the sampling inner tank 130 is communicated with the liquid outlet groove 112 through the sampling filter hole 131.

[0051] In some exemplary embodiments, the sampling rod 110 includes a front rod section, a middle rod section, and a rear rod section that are sequentially distributed along the axial direction. The sampling groove 111 is opened in the front rod section; it can be understood that the liquid outlet groove 112 and the liquid outlet 113 are correspondingly arranged with the sampling groove 111, and both are also opened in the front rod section. The middle rod section is provided with a driving cavity 114, and the middle section of the drive rod 150 is movably accommodated in the driving cavity 114. The translational driving member 160 is installed on the rear rod section, and is exemplarily embedded inside the rear rod section.

[0052] For the liquid feed automatic sampling device 100 provided by the embodiment of the present application, a sampling groove 111 and a liquid outlet groove 112 are opened at the front end of the sampling rod 110, and the liquid outlet groove 112 communicates with the sampling groove 111 from the side of the sampling groove 111; the sampling inner tank 130 is accommodated in the sampling groove 111, and the sampling inner tank 130 is provided with a sampling filter hole 131 communicating with the liquid outlet groove 112, so that the inside of the sampling inner tank 130 can be communicated through the sampling filter hole 131 and the liquid outlet groove 112.

[0053] The working principle of the liquid feed automatic sampling device 100 provided by the embodiment of the present application is as follows:

[0054] The translational driving member 160 drives the sampling piston 140 to move in the sampling inner tank 130 through the drive rod 150. See Figure 1 , when the drive rod 150 is in the first position, the sampling piston 140 is located at the opening of the sampling inner tank 130. At this time, the sampling device is in the initial state. See Figure 1 and Figure 2 , Figure 1 Corresponding to the first position, Figure 2 Corresponding to the second position, when the drive rod 150 moves from the first position to the second position, during this process, the cavity behind the sampling piston 140 in the sampling inner tank 130 is communicated with the liquid outlet groove 112 through the sampling filter hole 131. As the sampling piston 140 moves, the liquid feed can be sucked from the opening of the sampling inner tank 130. At this time, the sampling device is in the feeding state. See Figure 2 andFigure 4 , Figure 2 Before rotating the sampling device, Figure 4 After the sampling device is rotated accordingly, when the driving rod 150 reaches the second position, the sampling device is rotated so that the opening of the sampling liner 130 faces upward; see Figure 4 and Figure 5 , Figure 4 Corresponding to the second position, Figure 5 Corresponding to the third position, the driving rod 150 is then controlled to move from the second position to the third position. During this process, the cavity in the sampling liner 130 located in front of the sampling piston 140 is connected to the liquid outlet groove 112 through the sampling filter hole 131. The liquid phase in the liquid feed can enter the liquid outlet pipe 120 through the sampling filter hole 131, the liquid outlet groove 112 and the liquid outlet 113 in sequence, and the solid phase in the liquid feed is intercepted in the sampling liner 130. This sampling process can separate the solid phase and the liquid phase of the liquid feed, reduce the sampling steps, and improve the sampling efficiency.

[0055] In some embodiments, the liquid feed automatic sampling device 100 further includes a rotary drive 170, which refers to a drive device capable of outputting a rotary motion, such as a rotary motor, etc. The rotary drive 170 is installed in the middle section of the rod body, and is exemplarily embedded inside the middle section of the rod body.

[0056] The sampling liner 130 is rotatably embedded in the sampling slot 111 , and its rotation axis is the axis of the sampling rod 110 .

[0057] The driving rod 150 includes a rotating section 151 and a translation section 152, and the translation section 152 is rotatably connected to the rear end of the rotating section 151; the translation driving member 160 is transmission connected to the translation section 152, and is used to drive the driving rod 150 to reciprocate between the first position, the second position and the third position; the rotating section 151 is transmission connected to the rotating driving member 170, and is used to drive the driving rod 150 to rotate.

[0058] The rotating section 151 is in transmission connection with the bottom of the sampling liner 130, so that the rotating section 151 drives the sampling liner 130 to rotate. As an example, the rotating section 151 can be configured as a non-circular rod body, such as a square rod, so that the rotating section 151 and the bottom of the sampling liner 130 can be slidably sealed and matched, and the transmission can be better realized.

[0059] In the above-mentioned embodiment, the rotating section 151 of the driving rod 150 is driven by the rotating driving member 170, so as to drive the sampling liner 130 to rotate in the sampling slot 111. As an example, when the driving rod 150 moves to Figure 5 When the sampling liner 130 is in the position shown in FIG. Figure 5In the solid-liquid separation process shown, the rotation of the sampling liner 130 can provide centrifugal force for solid-liquid separation, which is conducive to more efficient solid-liquid separation of liquid feed.

[0060] It should be noted that, in the embodiments of the present application, in some designs, the rotating drive member 170 can be fixedly connected to the rotating section 151 by transmission. Based on this design, the rotating drive member 170 needs to be slidably matched with the middle section of the rod body so that the rotating drive member 170 can move linearly with the rotating section 151; in other designs, the rotating drive member 170 can be fixedly connected to the middle section of the rod body. Based on this design, the rotating drive member 170 needs to be connected to the rotating section 151 by transmission in a movable manner.

[0061] See also Figure 6 In some embodiments, the rotating driving member 170 is fixedly connected to the middle section of the rod body, and correspondingly, the rotating driving member 170 is connected to the rotating section 151 in a movable manner. Specifically, the power output end of the rotating driving member 170 is connected to the driving ring 171 in a driving manner, and the driving ring 171 is rotatably connected to the middle section of the rod body along the circumference of the sampling rod 110. The side wall of the rotating section 151 near the translation section 152 is provided with a driving protrusion 1511 that is detachably matched with the driving ring 171, and the driving protrusion 1511 is movably accommodated in the driving activity cavity 114; before the driving rod 150 reaches the third position, the corresponding part of the driving rod 150 and the driving ring 171 is movably inserted into the driving ring 171; when the driving rod 150 is in the third position, the driving protrusion 1511 is embedded in the driving ring 171, so that the driving ring 171 drives the driving protrusion 1511 to rotate.

[0062] In some embodiments, the inner diameter of the sampling liner 130 gradually increases when approaching the bottom of the sampling liner 130 from the opening of the sampling liner 130 .

[0063] In this design, reference Figure 5 In the state shown, when the sampling liner 130 is rotated for solid-liquid separation, it is beneficial to gather the material in the sampling liner 130 to the bottom of the sampling liner 130. On the one hand, it can better achieve solid-liquid separation and at the same time reduce the material from being thrown out from the opening of the sampling liner 130.

[0064] In such Figure 5 In the solid-liquid separation process shown, in order to better prevent the material from being thrown out from the opening of the sampling liner 130, in some embodiments, the liquid feed automatic sampling device 100 also includes a flip cover 180, which is used to open and close the opening of the sampling liner 130.

[0065] Optionally, the flip cover 180 is connected to the front section of the rod body by an elastic reset member, and the elastic reset member is used to drive the flip cover 180 to be in a state of opening the opening of the sampling inner tank 130. The elastic reset member is, for example, a torsion spring. The automatic liquid feed sampling device 100 further includes an opening and closing driving member 190. The opening and closing driving member 190 is installed on the front section of the rod body and is used to drive the flip cover 180 to be in a state of closing the opening of the sampling inner tank 130. As an example, the rotating end of the flip cover 180 protrudes from the side surface of the front section of the rod body, and the opening and closing driving member 190 is installed on the side surface of the front section of the rod body. The front section of the rod body pushes the part of the rotating end of the flip cover 180 that protrudes from the side surface of the front section of the rod body to push the flip cover 180 to close.

[0066] The opening and closing driving member 190 is exemplarily a driving device capable of outputting linear motion, such as a cylinder.

[0067] In the above design, the flip cover 180 keeps the opening of the sampling inner tank 130 open under the elastic restoring force of the elastic reset member, and switches to closing the opening of the sampling inner tank 130 under the push of the opening and closing driving member 190. This design has a simple control over the opening and closing of the opening of the sampling inner tank 130.

[0068] See Figure 6 , in some embodiments, the automatic liquid feed sampling device 100 further includes a trigger button 1100, and the trigger button 1100 is installed on the chamber wall of the driving cavity 114. The trigger button 1100 is communicatively connected to the opening and closing driving member 190. That is to say, when the trigger button 1100 is touched, the trigger button 1100 outputs a signal to the opening and closing driving member 190, and after receiving the signal, the opening and closing driving member 190 starts to push the flip cover 180 to close the opening of the sampling inner tank 130.

[0069] A positioning protrusion 1512 protrudes from the side wall of the driving rod 150, and the positioning protrusion 1512 is movably received in the driving cavity 114. When the driving rod 150 is located between the second position and the third position, the positioning protrusion 1512 touches the trigger button 1100. It should be noted that in the embodiments of the present application, when the positioning protrusion 1512 triggers the trigger button 1100, the position where the driving rod 150 is located includes the second position and the third position. That is to say, after the driving rod 150 reaches the second position, during the movement towards the third position, the starting point, any intermediate point, and the end point of the driving rod 150 can be used as the position for triggering the trigger button 1100.

[0070] After the drive rod 150 reaches the second position, the process of sucking the material is completed; after the drive rod 150 reaches the second position, the sampling inner tank 130 is driven to rotate to achieve centrifugal solid-liquid separation. Based on the above design, it is possible to trigger the trigger button 1100 to send a signal when or after the material sucking is completed and before the centrifugal rotation for solid-liquid separation, so that the opening and closing drive member 190 can push the flip cover 180 to close the opening of the sampling inner tank 130 during this process, and the opening and closing timing can be better matched with the entire sampling process.

[0071] As an example, the positioning protrusion 1512 is located on the side wall of the rotating section 151. In the axial direction of the sampling rod 110, the positioning protrusion 1512 is located on the side of the rotation drive member 170 close to the front section of the rod body; when the drive rod 150 is between the third positions, the positioning protrusion 1512 touches the trigger button 1100.

[0072] In the embodiment configured with the positioning protrusion 1512, further, a sliding flange 115 protrudes from the inner side of the front end opening of the drive activity cavity 114, and the side wall of the rotating section 151 is slidably matched with the sliding flange 115; when the drive rod 150 is in the first position, the positioning protrusion 1512 abuts against the side wall of the sliding flange 115.

[0073] In this design, in addition to being able to trigger the trigger button 1100, when the drive rod 150 moves closer to the first position, the positioning protrusion 1512 can also play a positioning role, so that when the drive rod 150 moves to the first position, it prevents the drive rod 150 from continuing to move towards the front end of the sampling rod 110, and can better position the first position of the drive rod 150.

[0074] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A liquid feed automatic sampling device, characterized in that: include: A sampling rod, wherein the sampling rod is provided with a sampling groove, a liquid outlet groove and a liquid outlet; the opening of the sampling groove is located at the front end surface of the sampling rod; the liquid outlet groove corresponds to the groove bottom of the sampling groove, and the opening of the liquid outlet groove is located at the groove side wall of the sampling groove; the liquid outlet is opened on the side wall of the sampling rod, and the liquid outlet is communicated with the liquid outlet groove; a liquid outlet pipe, the liquid outlet pipe being in communication with the liquid outlet; A sampling liner, the sampling liner is accommodated in the sampling slot, and a sampling filter hole connected to the liquid outlet slot is opened on the side wall of the sampling liner; A sampling piston, wherein the sampling piston is slidably and sealingly matched with the side wall of the sampling liner along the axial direction of the sampling rod; A driving rod, the driving rod is movably arranged along the axial direction of the sampling rod through the bottom wall of the sampling liner and the sampling rod, and the front end of the driving rod is connected to the sampling piston; A translational drive member, which is installed on the sampling rod; the translational drive member is transmission-connected to the driving rod so that the driving rod reciprocates between a first position, a second position and a third position; wherein, when the driving rod is in the first position, the sampling piston is located at the opening of the sampling liner; when the driving rod is in the second position, the sampling piston corresponds to the boundary between an area in the side wall of the sampling liner where the sampling filter hole is provided and an area where the sampling filter hole is not provided; when the driving rod is in the third position, the sampling piston is located at the bottom of the sampling liner so that the sampling filter hole is connected to the opening of the sampling liner.

2. The liquid feed automatic sampling device according to claim 1, characterized in that: The sampling rod comprises a front section, a middle section and a rear section of the rod body which are sequentially distributed along the axial direction; the sampling slot is provided in the front section of the rod body; the middle section of the rod body is provided with a driving activity cavity, and the middle section of the driving rod can be movably accommodated in the driving activity cavity; the translation driving member is installed in the rear section of the rod body.

3. The liquid feed automatic sampling device according to claim 2, characterized in that: The liquid feed automatic sampling device further comprises a rotating driving member, which is installed at the middle section of the rod body; The sampling liner is rotatably embedded in the sampling slot; The driving rod includes a rotating section and a translational section, and the translational section is rotatably connected to the rear end of the rotating section; the translational driving member is transmission-connected to the translational section; the rotating section is transmission-connected to the rotating driving member; the rotating section is transmission-connected to the bottom of the sampling liner, so that the rotating section drives the sampling liner to rotate.

4. The liquid feed automatic sampling device according to claim 3, characterized in that: The power output end of the rotating driving member is drivingly connected with a driving ring, and the driving ring is rotatably connected to the middle section of the rod body along the circumference of the sampling rod; A driving protrusion that is detachably matched with the driving ring is protruded from the side wall of one end of the rotating section close to the translatory section, and the driving protrusion can be movably accommodated in the driving activity cavity; when the driving rod is in the third position, the driving protrusion is embedded in the driving ring, so that the driving ring drives the driving protrusion to rotate.

5. The liquid feed automatic sampling device according to claim 3, characterized in that: When approaching from the opening of the sampling liner toward the bottom of the sampling liner, the inner diameter of the sampling liner gradually increases.

6. The liquid feed automatic sampling device according to claim 3, characterized in that: The liquid feed automatic sampling device also includes a flip cover, which is used to open and close the opening of the sampling liner.

7. The liquid feed automatic sampling device according to claim 6, characterized in that: The flip cover is connected to the front section of the rod body via an elastic reset member, and the elastic reset member is used to drive the flip cover to open the opening of the sampling liner; The liquid feed automatic sampling device also includes an opening and closing driving member; the opening and closing driving member is installed on the front section of the rod body and is used to drive the flip cover to be in a state of closing the opening of the sampling liner.

8. The liquid feed automatic sampling device according to claim 7, characterized in that: The liquid feed automatic sampling device further comprises a trigger button, which is mounted on the cavity wall of the driving activity cavity; the trigger button is communicatively connected with the opening and closing driving member; A positioning protrusion is convexly provided on the side wall of the driving rod, and the positioning protrusion can be movably accommodated in the driving activity cavity; when the driving rod is located between the second position and the third position, the positioning protrusion touches the trigger button.

9. The liquid feed automatic sampling device according to claim 8, characterized in that: The positioning protrusion is located on the side wall of the rotating section, and in the axial direction of the sampling rod, the positioning protrusion is located on the side of the rotating driving member close to the front section of the rod body; when the driving rod is located between the third positions, the positioning protrusion touches the trigger button.

10. The liquid feed automatic sampling device according to claim 9, characterized in that: A sliding flange is convexly provided on the inner side of the front end opening of the driving activity cavity, and the side wall of the rotating section is slidably matched with the sliding flange; When the driving rod is located at the first position, the positioning protrusion abuts against the side wall of the sliding flange.

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