Sampling equipment

Abstract

The invention belongs to the technical field of ball valves, and provides sampling equipment which comprises a liquid outlet device and a sampling device, the sampling device is located below the liquid outlet device, the liquid outlet device comprises a sampling pipe, a ball valve body, a liquid outlet pipe and a moving mechanism, the ball valve body is connected to the bottom of the sampling pipe, and the liquid outlet pipe is connected to the bottom of the ball valve body. The moving mechanism is used for driving the liquid outlet pipe to move back and forth in the direction close to or away from the sampling device; the sampling device comprises a mounting plate, a rotating mechanism and a plurality of fixing mechanisms, the fixing mechanisms are uniformly distributed at the top of the mounting plate at intervals in the circumferential direction and are used for placing and fixing sampling bottles, and the rotating mechanism is connected to a bottom plate of the mounting plate and is used for driving the mounting plate to rotate; therefore, the sampling bottle in any fixing mechanism of the mounting plate is positioned below the liquid outlet pipe. The sampling device has the advantages that through cooperation of the moving mechanism and the rotating mechanism, automatic butt joint between the liquid outlet pipe and the multiple sampling bottles is achieved, and the sampling efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of ball valves, and in particular relates to a sampling device. Background Art

[0002] The sampling ball valve is a valve used to obtain medium samples from pipelines or equipment in order to analyze the medium samples. It is widely used in the fields of pharmaceutical machinery or chemical synthesis.

[0003] The structure of the sampling valve generally includes a valve body, a valve cover, a ball, a valve stem and a control mechanism, wherein the valve body is provided with a sampling inlet valve channel and a sampling outlet valve channel, a valve cavity is provided between the sampling inlet valve channel and the sampling outlet valve channel, the ball is installed in the valve cavity, and valve seats are provided on both sides of the valve cavity relative to the valve body, and a sampling cavity is provided in the ball, which is connected to the sampling inlet valve channel and the sampling outlet valve channel respectively during the rotation of the ball. In this traditional sampling ball valve, during the sampling process, the medium enters the sampling cavity from the sampling inlet valve channel, and then the medium flows from the sampling cavity into the sampling outlet valve channel to complete the sampling.

[0004] When the existing sampling ball valve is used, when multiple sampling is required, the sampling bottle can only be removed first and then a new sampling bottle is installed for sampling, and so on, in order to perform multiple sampling, which is time-consuming and labor-intensive and reduces the sampling efficiency. Summary of the invention

[0005] The purpose of the present application is to provide a sampling device, which realizes automatic docking between a liquid outlet tube and a plurality of sampling bottles through the cooperation of a moving mechanism and a rotating mechanism, without the need for manual intervention, thereby greatly improving the sampling efficiency.

[0006] The technical solution adopted by the present application to solve the above technical problems is as follows: a sampling device is proposed, comprising: a liquid outlet device and a sampling device, the sampling device is located below the liquid outlet device, the liquid outlet device comprises a sampling tube, a ball valve body, a liquid outlet tube and a moving mechanism, the ball valve body is connected to the bottom of the sampling tube, the liquid outlet tube is connected to the bottom of the ball valve body, the moving mechanism is connected between the ball valve body and the liquid outlet tube, and the moving mechanism is used to drive the liquid outlet tube to move back and forth relative to the ball valve body in a direction close to or away from the sampling device; The sampling device includes a mounting plate, a rotating mechanism and a plurality of fixing mechanisms, wherein the fixing mechanisms are evenly spaced along the circumferential direction on the top of the mounting plate, the fixing mechanisms are used to place and fix sampling bottles, the rotating mechanism is connected to the bottom plate of the mounting plate, and the rotating mechanism is used to drive the mounting plate to rotate, so that the sampling bottles in any fixing mechanism of the mounting plate are located below the liquid outlet tube.

[0007] Through the above technical features, the sample liquid first enters the ball valve body through the sampling tube. The liquid outlet pipe is connected to the bottom of the ball valve body and is used to guide the sample liquid from the ball valve body to the sampling device below. The moving mechanism drives the liquid outlet pipe to move relative to the ball valve body so that it can be close to or away from the sampling device. When sampling, the liquid outlet pipe can be close to the sampling bottle in the sampling device, which is convenient for guiding the sample liquid into the sampling bottle; a plurality of fixing mechanisms are evenly distributed along the circumferential intervals on the top of the mounting plate, each fixing mechanism is used to place and fix a sampling bottle, and a plurality of sampling bottles are also prepared at the same time. The rotating mechanism is connected to the bottom of the mounting plate. By driving the mounting plate to rotate, the sampling bottle in any fixing mechanism can be automatically rotated to the bottom of the liquid outlet pipe, thereby achieving seamless docking without the need for manual replacement of the sampling bottle.

[0008] Therefore, the present application realizes the automatic docking between the liquid outlet tube and multiple sampling bottles through the cooperation of the moving mechanism and the rotating mechanism, without manual intervention, greatly improving the sampling efficiency. The user only needs to place the sampling bottle in the fixed mechanism in advance, and after starting the equipment, the sampling process can be automatically completed, without the need to frequently replace the sampling bottle, reducing the labor intensity of the operator. The user can prepare multiple sampling bottles at the same time as needed to meet different sampling needs, improve the flexibility of sampling, and the automated sampling process reduces the risk of contamination caused by manual operation, especially for high-purity or sensitive media.

[0009] Preferably, the ball valve body includes a valve seat, a ball core, and a rotating handle. The valve seat is provided with a valve cavity connected to the sampling tube and the liquid outlet pipe. The ball core is arranged in the valve cavity. The ball core is provided with a sampling cavity. The rotating handle is rotatably connected to the valve seat. One end of the rotating handle extends into the valve seat and is connected to the outer wall of the ball core. The rotating handle is used to drive the ball core to rotate in the valve cavity. The opening of the sampling cavity is respectively connected to the sampling tube and the liquid outlet pipe during the rotation of the ball core.

[0010] Through the above technical features, when sampling, first rotate the rotating handle to an appropriate position, so that the opening of the sampling cavity is connected to the sampling tube, and the sample liquid enters the sampling cavity from the sampling tube. Then, rotate the rotating handle to another position, so that the opening of the sampling cavity is connected to the liquid outlet tube, and the sample liquid flows out of the sampling cavity to the liquid outlet tube, and finally enters the sampling device below for collection, completing the sampling.

[0011] Preferably, liquid outlet channels are provided on both sides of the lower end of the valve cavity in the valve seat, a liquid outlet hole communicating with the liquid outlet channels is provided on the valve seat, and a plugging cap is provided at the liquid outlet hole.

[0012] Through the above technical features, a gap is left between the ball core and the wall of the valve cavity. During the sampling process of the ball core, the gap will be filled with liquid. Long-term accumulation will affect the rotation of the ball valve in the valve cavity. When there is sample liquid residual between the valve body and the ball core, the remaining sample liquid can be discharged from the liquid outlet through the liquid outlet channel by opening the plugging cap. When sampling, the liquid outlet is blocked with the plugging cap to avoid leakage of the sample liquid.

[0013] Preferably, the cross section of the sampling cavity is in the shape of an inverted trapezoid.

[0014] Through the above-mentioned technical features, when the medium enters the inverted trapezoidal sampling cavity, its larger opening area is conducive to the smooth inflow of the medium. As the medium moves deeper into the sampling cavity, the cross-sectional area gradually decreases, which helps to slow down the flow rate of the medium and promote the uniform distribution and mixing of the medium in the sampling cavity. During the sampling process, when the ball core rotates until the sampling cavity is connected to the liquid outlet channel, the medium will flow downward along the inclined surface of the inverted trapezoid. This flow characteristic helps to reduce the residual medium in the sampling cavity and improve the accuracy of sampling. In addition, the inverted trapezoidal sampling cavity can more effectively disperse these forces and reduce local stress concentration when the side walls of the sampling cavity are subjected to lateral forces from the sample liquid, thereby enhancing the overall stability and avoiding the shaking of the ball core due to stress concentration after the sampling cavity is connected to the sample liquid.

[0015] Preferably, the liquid outlet pipe includes a connecting pipe and a mounting pipe, the top end of the connecting pipe is connected to the lower end of the valve seat, the connecting pipe is communicated with the valve cavity, the bottom of the connecting pipe is slidably connected with the mounting pipe, a bellows is connected between the top of the mounting pipe and the bottom of the connecting pipe, and the moving mechanism drives the mounting pipe to move back and forth relative to the connecting pipe toward or away from the sampling device.

[0016] Through the above technical features, during sampling, when the sample liquid in the sampling chamber flows into the installation tube through the valve chamber and the connecting tube, the moving mechanism drives the installation tube to move toward the side close to the sampling device, stretches the bellows between the installation tube and the connecting tube, and the sample liquid flows through the connecting tube through the bellows and the installation tube into the sampling device for collection. After the sampling is completed, the moving mechanism drives the installation tube to move toward the side close to the connecting tube, compresses the bellows, and returns to its initial position. As a connecting element, the bellows has excellent sealing performance, ensuring that the installation tube always remains sealed during the movement of the installation tube, preventing leakage of the medium or external impurities from entering the pipeline system, and ensuring the accuracy and safety of the sampling process.

[0017] Preferably, the moving mechanism includes a protective shell, which is connected to the outer side of the valve seat, and a sleeve is equidistantly connected to the bottom of the protective shell, and a telescopic rod is slidably connected to the inner cavity of the sleeve, and the bottom end of the telescopic rod passes through the sleeve and extends to the outside of the sleeve and is connected to a fixing plate, and the inner side of the fixing plate is connected to the outer side of the mounting tube, and the inner cavity of the telescopic rod is threadedly connected to a threaded rod, and the top of the threaded rod passes through the telescopic rod, the sleeve and the protective shell in sequence and extends to the inner cavity of the protective shell, and a driving assembly is arranged on the top of the protective shell, and the driving assembly is drivingly connected to the threaded rod, and the driving assembly is used to drive the threaded rod to move back and forth relative to the valve seat in a direction close to or away from the sampling device, thereby driving the mounting tube to move back and forth relative to the connecting tube in a direction close to or away from the sampling device.

[0018] Through the above-mentioned technical features, during the sampling process, when it is necessary to adjust the distance between the mounting tube and the sampling device, the driving assembly is started and drives the threaded rod to rotate. The rotation of the threaded rod causes the telescopic rod to move up and down in the inner cavity of the sleeve, and then drives the mounting tube to move closer to or away from the sampling device through the fixed plate, thereby stretching or compressing the bellows to complete the movement of the mounting tube.

[0019] Preferably, the drive assembly includes a protective box, which is fixedly mounted on the top of the protective shell, and a drive motor is installed in the inner cavity of the protective box. The output shaft of the drive motor passes through the protective box and the protective shell in sequence and extends to the inner cavity of the protective shell. The inner cavity of the protective shell is rotatably connected with an inner gear ring, and the inner side of the inner gear ring is respectively meshed with the threaded rod and the output shaft of the drive motor.

[0020] Through the above-mentioned technical features, when the driving motor is started, its output shaft begins to rotate. Since the output shaft is meshed with the inner gear ring, the inner gear ring will also rotate accordingly. The rotation of the inner gear ring then drives the threaded rod meshed with it to rotate. The rotation of the threaded rod drives the telescopic rod to move up and down in the inner cavity of the sleeve through the threaded connection, thereby driving the mounting tube to move in a direction closer to or away from the sampling device.

[0021] Preferably, the fixing mechanism includes a fixing tube, which is equidistantly installed on the top of the mounting plate, the inner cavity of the fixing tube is slidably connected to a circular plate, fixing boxes are installed on both sides of the fixing tube, the top of the inner cavity of the fixing box is slidably connected to a moving rod, the inner ends of the moving rods respectively penetrate the fixing box and the fixing tube in sequence and extend to the inner cavity of the fixing tube and are connected to an arc-shaped clamping plate, the moving rod is located at the bottom of one end of the fixing box and is connected to a push plate, the lower end of the push plate is hinged with a rocker, one end of the rocker penetrates the fixing box and the fixing tube in sequence and extends to the inner cavity of the fixing tube and is located below the circular plate, the outer end of the moving rod is connected to a return spring, and the outer end of the return spring is connected to the side wall of the inner cavity of the fixing box.

[0022] Through the above technical features, the sampling bottle is placed in the fixed tube, and the sampling bottle drives the circular plate to move under the force of its own gravity. The moving circular plate drives one end of the seesaw to move downward, and the other end of the seesaw pushes the push plate to move upward. The push plate drives the moving rod to move toward the inside of the fixed tube, and the moving rod drives the arc-shaped clamping plate to move toward the inside of the fixed tube. The moving arc-shaped clamping plate can clamp and fix the sampling bottle, thereby fixing the sampling bottle. Through the clamping effect of the arc-shaped clamping plate and the auxiliary clamping of the seesaw, it can be ensured that the components are firmly and reliably fixed on the mounting plate during the installation process, thereby improving the stability and safety of the installation.

[0023] Preferably, the rotating mechanism includes a base plate, which is arranged below the mounting plate, a receiving tube is installed on the top of the base plate, a servo motor is installed in the inner cavity of the receiving tube, and the output shaft of the servo motor passes through the receiving tube and extends to the outside of the receiving tube to connect with the bottom of the mounting plate.

[0024] With the above technical features, when the servo motor is started, its output shaft begins to rotate, and since the output shaft is connected to the bottom of the mounting plate, the mounting plate will rotate with the rotation of the output shaft.

[0025] Preferably, a supporting slide ring is installed at the bottom of the mounting plate, a supporting slide seat is installed at the top of the receiving tube, and the surface of the supporting slide ring is rotatably connected to the inner cavity of the supporting slide seat.

[0026] Through the above technical features, a rotational connection is formed between the surface of the support slide ring and the inner cavity of the support slide seat, allowing the mounting plate to rotate freely on the support slide seat without excessive resistance or restriction. When the output shaft of the servo motor drives the mounting plate to rotate, the mounting plate will drive the support slide ring to rotate in the inner cavity of the support slide seat, thereby realizing the rotational movement of the entire mounting plate. The smooth contact surface between the support slide ring and the support slide seat reduces friction and wear during rotation, thereby extending the service life of the equipment. In addition, the guiding effect of the support slide seat on the support slide ring helps to maintain the stability and accuracy of the mounting plate during rotation, thereby improving the rotation accuracy.

[0027] In summary, this application has the following beneficial effects: 1. The present application realizes the automatic docking between the liquid outlet tube and multiple sampling bottles through the cooperation of the moving mechanism and the rotating mechanism, without manual intervention, which greatly improves the sampling efficiency. The user only needs to place the sampling bottle in the fixed mechanism in advance, and after starting the equipment, the sampling process can be automatically completed, without the need to frequently replace the sampling bottle, which reduces the labor intensity of the operator; 2. The present application provides an inverted trapezoidal sampling cavity, which can more effectively disperse the lateral force of the sample liquid on the side wall of the sampling cavity, reduce local stress concentration, and thus enhance the overall stability, and avoid the shaking of the ball core due to stress concentration after the sample liquid is connected to the sampling cavity; 3. The present application discharges the residual sample liquid from the liquid outlet through the liquid outlet channel by opening the plugging cap, thereby avoiding the influence of the residual sample liquid on the rotation of the ball core, ensuring the smooth rotation and sampling of the ball core, and improving the service life of the ball valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an implementation scheme of the present application; Figure 2 A schematic diagram of the cross-sectional structure of a ball valve body according to an embodiment of the present application Figure 1 ; Figure 3 A schematic diagram of the cross-sectional structure of a ball valve body according to an embodiment of the present application Figure 2 ; Figure 4 This is a schematic diagram of the explosion structure of a liquid outlet pipe according to an embodiment of the present application; Figure 5 This is a schematic diagram of an exploded structure of a moving mechanism according to an embodiment of the present application; Figure 6 This is a schematic diagram of the exploded structure of a rotating mechanism according to an embodiment of the present application; Figure 7 This is a schematic diagram of the exploded structure of a fixing mechanism according to an embodiment of the present application; Figure 8 This is a schematic diagram of the structure of a drainage mechanism according to an implementation scheme of the present application.

[0029] In the figure, 1, liquid outlet device; 11, sampling tube; 12, ball valve body; 121, valve seat; 122, ball core; 123, rotating handle; 124, valve chamber; 125, sampling chamber; 126, liquid outlet channel; 127, liquid outlet hole; 128, plugging cap; 129, sealing gasket; 13, liquid outlet pipe; 131, connecting pipe; 132, mounting pipe; 133, bellows; 14, moving mechanism; 141, protective shell; 142, sleeve; 143, telescopic rod; 144, fixing plate; 145, threaded rod; 146, driving assembly; 1461, protection box; 1462, driving motor ;1463, inner gear ring;15, control valve;16, multi-tube connector;17, water inlet pipe;2, sampling device;21, mounting plate;22, fixing mechanism;221, fixing pipe;222, round plate;223, fixing box;224, moving rod;225, arc clamp;226, push plate;227, rocker;228, reset spring;23, rotating mechanism;231, bottom plate;232, receiving tube;233, servo motor;234, supporting slide ring;235, supporting slide seat;24, drainage mechanism;241, drainage pipe;242, fixing ring pipe;243, water outlet pipe. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present application and combined with the accompanying drawings to further describe the technical solution of the present application, but the present application is not limited to these embodiments.

[0031] like Figure 1 As shown, the present application discloses a sampling device, comprising: a liquid outlet device 1 and a sampling device 2 , wherein the sampling device 2 is located below the liquid outlet device 1 .

[0032] The liquid outlet device 1 comprises a sampling tube 11, both ends of the surface of the sampling tube 11 are equipped with control valves 15, and both ends of the sampling tube 11 are respectively connected with a multi-tube connector 16 and a water inlet pipe 17, wherein one control valve 15 is connected between the multi-tube connector 16 and the sampling tube 11, and the other control valve 15 is connected between the water inlet pipe 17 and the sampling tube 11. The bottom of the sampling tube 11 is connected with a ball valve body 12, and the bottom of the ball valve body 12 is connected with a liquid outlet pipe 13, and the surface of the ball valve body 12 is provided with a moving mechanism 14 for moving the liquid outlet pipe 13 for sampling.

[0033] When in use, the multi-tube connector 16 can be used to connect with various external liquid pipelines, and then the ball valve body 12 and the liquid outlet pipe 13 can be used to facilitate sampling of different liquids. The liquid outlet pipe 13 can be moved by the moving mechanism 14, so that the liquid outlet pipe 13 can be connected to the sampling bottle in the sampling device 2, which is convenient for sampling with the sampling bottle and improves the sampling efficiency.

[0034] The sampling device 2 includes a mounting plate 21, on the top of which are equidistantly mounted fixing mechanisms 22 for fixing sampling bottles for facilitating sampling of the sampling bottles, and at the bottom of the mounting plate 21 are rotating mechanisms 23 for rotating the mounting plate 21 for facilitating sampling.

[0035] When in use, the sampling bottle is placed in the fixed tube 221 in the fixing mechanism 22 to fix the sampling bottle. The rotating mechanism 23 can drive the mounting plate 21 to rotate, and the mounting plate 21 drives the sampling bottle fixed in the fixed tube 221 to rotate, so that the sampling bottle in the fixed tube 221 is located below the liquid outlet tube 13, thereby facilitating multiple sampling and sampling of different liquids, thereby improving the sampling efficiency.

[0036] The bottom of the mounting plate 21 is provided with a drainage mechanism 24 for draining water so as to facilitate cleaning the inside of the sampling tube 11 and the ball valve body 12. When in use, the water inlet pipe 17 can be connected to an external water pipe. When the sampling tube 11 and the ball valve body 12 need to be cleaned, the control valve 15 near the side of the water inlet pipe 17 is opened and the control valve 15 near the side of the multi-tube connector 16 is closed. At this time, external cleaning water enters the sampling tube 11 and the ball valve body 12 through the water inlet pipe 17 and is discharged through the drainage mechanism 24, so that the inside of the sampling tube 11 and the ball valve body 12 can be flushed, which is convenient for sampling different liquids.

[0037] like Figure 2 and Figure 3 As shown, the ball valve body 12 includes a valve seat 121, a ball core 122, and a rotating handle 123. The valve seat 121 is provided with a valve cavity 124 connected to the sampling tube 11 and the liquid outlet tube 13. The ball core 122 is arranged in the valve cavity 124. The ball core 122 is provided with a sampling cavity 125. The rotating handle 123 is rotatably connected to the valve seat 121. One end of the rotating handle 123 extends into the valve seat 121 and is connected to the outer wall of the ball core 122. The rotating handle 123 is used to drive the ball core 122 to rotate in the valve cavity 124.

[0038] When sampling, first rotate the rotating handle 123 to an appropriate position, so that the opening of the sampling cavity 125 is connected to the sampling tube 11, and the sample liquid enters the sampling cavity 125 from the sampling tube 11. Then, rotate the rotating handle 123 to another position, so that the opening of the sampling cavity 125 is connected to the liquid outlet tube 13, and the sample liquid flows out of the sampling cavity 125 to the liquid outlet tube 13, and finally enters the sampling device 2 below for collection, and the sampling is completed.

[0039] A gap is left between the ball core 122 and the cavity wall of the valve cavity 124. A sealing gasket 129 is provided on the inner peripheral wall of the valve cavity 124 in the valve seat 121. The ball core 122 contacts and seals with the sealing gasket 129. Liquid outlet channels 126 are provided on both sides of the lower end of the valve cavity 124 in the valve seat 121. A liquid outlet hole 127 communicating with the liquid outlet channel 126 is provided on the valve seat 121. A plugging cap 128 is provided at the liquid outlet hole 127. The liquid outlet channel 126 passes through the sealing gasket 129 and communicates with the valve cavity 124. During the sampling process of the ball core 122, the sample liquid flows into the gap between the ball core 122 and the sealing gasket 129. The long-term accumulation will affect the rotation of the ball valve body 12 in the valve cavity 124. When there is sample liquid remaining between the valve cavity 124 and the ball core 122, the remaining sample liquid can be discharged from the liquid outlet 127 through the liquid outlet channel 126 by opening the plugging cap 128 to avoid the residual sample liquid from affecting the rotation of the ball core 122. When sampling, the liquid outlet 127 is blocked with the plugging cap 128 to prevent leakage of the sample liquid.

[0040] The cross section of the sampling cavity 125 is in an inverted trapezoidal shape. When the side wall of the sampling cavity 125 is subjected to lateral force of the sample liquid, the inverted trapezoidal sampling cavity 125 can more effectively disperse these forces, reduce local stress concentration, thereby enhancing the overall stability and preventing the ball core 122 from shaking due to stress concentration after the sampling cavity 125 is connected to the sample liquid.

[0041] like Figure 4 As shown, the liquid outlet pipe 13 includes a connecting pipe 131 and a mounting pipe 132. The top of the connecting pipe 131 is connected to the lower end of the valve seat 121, the connecting pipe 131 is communicated with the valve chamber 124, the bottom of the connecting pipe 131 is slidably connected with the mounting pipe 132, the top of the mounting pipe 132 and the bottom of the connecting pipe 131 are connected with a bellows 133, and the moving mechanism 14 drives the mounting pipe 132 to move back and forth relative to the connecting pipe 131 in a direction close to or away from the sampling device 2. When in use, the moving mechanism 14 drives the mounting pipe 132 to move, stretches the bellows 133 between the mounting pipe 132 and the connecting pipe 131, and makes the mounting pipe 132 sleeved on the bottle mouth of the sampling bottle for sampling.

[0042] like Figure 5As shown, the moving mechanism 14 includes a protective shell 141, which is connected to the outer side of the valve seat 121, and the bottom of the protective shell 141 is equidistantly connected with a sleeve 142, and the inner cavity of the sleeve 142 is slidably connected with a telescopic rod 143, and the bottom end of the telescopic rod 143 passes through the sleeve 142 and extends to the outside of the sleeve 142 and is connected with a fixing plate 144, and the inner side of the fixing plate 144 is connected to the outer side of the mounting tube 132, and the inner cavity of the telescopic rod 143 is threadedly connected with a threaded rod 145, and the top of the threaded rod 145 passes through the telescopic rod 143, the sleeve 142 and the protective shell 141 in sequence and extends to the inner cavity of the protective shell 141, and a driving assembly 146 is arranged on the top of the protective shell 141, and the driving assembly 146 is transmission-connected with the threaded rod 145. The driving assembly 146 drives the threaded rod 145 to rotate. The rotation of the threaded rod 145 causes the telescopic rod 143 to move up and down in the inner cavity of the sleeve 142, and then drives the mounting tube 132 to move toward or away from the sampling device 2 through the fixing plate 144, thereby stretching or compressing the bellows 133 to complete the movement of the mounting tube 132.

[0043] The driving assembly 146 includes a protection box 1461, which is fixedly mounted on the top of the protective shell 141. A driving motor 1462 is installed in the inner cavity of the protection box 1461. The output shaft of the driving motor 1462 sequentially penetrates the protection box 1461 and the protective shell 141 and extends to the inner cavity of the protective shell 141. The inner cavity of the protective shell 141 is rotatably connected with an inner gear ring 1463, and the inner side of the inner gear ring 1463 is respectively meshed with the threaded rod 145 and the output shaft of the driving motor 1462. When the driving motor 1462 is started, its output shaft starts to rotate, driving the inner gear ring 1463 to rotate accordingly. The rotation of the inner gear ring 1463 in turn drives the threaded rod 145 meshed therewith to rotate. The rotation of the threaded rod 145 drives the telescopic rod 143 to move up and down in the inner cavity of the sleeve 142 through the threaded connection, thereby driving the mounting tube 132 to move in a direction close to or away from the sampling device 2.

[0044] like Figure 6 As shown, the rotating mechanism 23 includes a bottom plate 231, which is arranged below the mounting plate 21. A receiving tube 232 is installed on the top of the bottom plate 231. A servo motor 233 is installed in the inner cavity of the receiving tube 232. The output shaft of the servo motor 233 passes through the receiving tube 232 and extends to the outside of the receiving tube 232 and is connected to the bottom of the mounting plate 21. A supporting slide 235 is installed on the top of the receiving tube 232, and a supporting slide ring 234 is installed at the bottom of the mounting plate 21. The surface of the supporting slide ring 234 is rotatably connected to the inner cavity of the supporting slide 235.

[0045] like Figure 7As shown, the fixing mechanism 22 includes a fixing tube 221, which is equidistantly installed on the top of the mounting plate 21, and the inner cavity of the fixing tube 221 is slidably connected with a circular plate 222. Fixing boxes 223 are installed on both sides of the fixing tube 221, and the top of the inner cavity of the fixing box 223 is slidably connected with a moving rod 224. The inner ends of the moving rod 224 respectively penetrate the fixing box 223 and the fixing tube 221 in sequence and extend to the inner cavity of the fixing tube 221 and are connected with an arc clamping plate 225. The moving rod 224 is located at the bottom of one end of the fixing box 223 and is connected with a push plate 226. The lower end of the push plate 226 is hinged with a rocker 227. One end of the rocker 227 penetrates the fixing box 223 and the fixing tube 221 in sequence and extends to the inner cavity of the fixing tube 221 and is located below the circular plate 222. The outer end of the moving rod 224 is connected with a return spring 228, and the outer end of the return spring 228 is connected to the side wall of the inner cavity of the fixing box 223.

[0046] When the sampling bottle is placed in the fixed tube 221, the circular plate 222 is driven to move under the action of the sampling bottle's own gravity. The moving circular plate 222 drives one end of the seesaw 227 to move downward, and the other end of the seesaw 227 pushes the push plate 226 to move upward. The push plate 226 drives the moving rod 224 to move toward the inside of the fixed tube 221, and the moving rod 224 drives the arc-shaped clamping plate 225 to move toward the inside of the fixed tube 221. The sampling bottle can be clamped and fixed by the moving arc-shaped clamping plate 225, thereby fixing the sampling bottle.

[0047] like Figure 8 As shown, the drainage mechanism 24 includes a drainage pipe 241, which is equidistantly arranged on the top of the mounting plate 21 and between the fixed pipes 221. A fixed ring pipe 242 is installed at the bottom end of the mounting plate 21. The bottom end of the drainage pipe 241 passes through the mounting plate 21 and extends to the outside of the mounting plate 21 to communicate with the top of the fixed ring pipe 242. One side of the fixed ring pipe 242 is connected with a water outlet pipe 243. When in use, the drainage pipe 241 is rotated to the bottom of the liquid outlet pipe 13 by the rotating mechanism 23, and then the liquid outlet pipe 13 is connected to the drainage pipe 241 by the moving mechanism 14. At this time, the external cleaning water will enter the drainage pipe 241 through the sampling tube 11, the ball valve body 12 and the liquid outlet pipe 13, and then be discharged through the fixed ring pipe 242 and the water outlet pipe 243. At the same time, the water outlet pipe 243 will be connected to the external water pipe, which is convenient for collecting and processing the discharged cleaning water.

[0048] Working principle: When in use, first place each sampling bottle in the fixed tube 221, and when the sampling bottle is placed in the fixed tube 221, the circular plate 222 descends, and the movable rod 224 and the arc clamping plate 225 are pushed inward through the seesaw 227 to clamp the sampling bottle. Then the servo motor 233 drives the mounting plate 21 to rotate, so that the fixed mechanism 22 (and the sampling bottle therein) mounted on the mounting plate 21 can rotate to the bottom of the liquid outlet tube 13, which is convenient for sampling operation. Then the driving component 146 (such as the driving motor 1462 and the inner gear ring 1463) of the moving mechanism 14 drives the telescopic rod 143 to move up and down in the sleeve 142 through the threaded rod 145, thereby pushing the mounting tube 132 to move downward relative to the connecting tube 131, so that one end of the mounting tube 132 is sleeved on the outside of the sampling bottle, which is convenient for sampling. Then, by turning the handle 123, the ball core 122 is driven to rotate in the valve chamber 124, and the opening of the sampling chamber 125 is controlled to communicate with the sampling tube 11, so that the sample liquid enters the sampling chamber 125. Then, when the handle 123 is turned to connect the sampling chamber 125 with the liquid outlet pipe 13, the fluid is allowed to flow out of the sampling chamber 125 to the liquid outlet pipe 13, and enter the sampling bottle through the liquid outlet pipe 13, the connecting pipe 131, and the bellows 133. After completing the sampling of a sampling bottle, the servo motor 233 drives the mounting plate 21 to rotate, so that the sampling bottles in other fixing mechanisms 22 on the mounting plate 21 are located below the liquid outlet pipe 13 and sampled in turn.

[0049] The specific embodiments described herein are merely examples of the present application. A person skilled in the art of the present application may make various modifications or additions to the specific embodiments described or replace them in a similar manner without departing from the scope defined in the present application.

Claims

1. A sampling device, characterized in that: include: A liquid outlet device (1) and a sampling device (2), wherein the sampling device (2) is located below the liquid outlet device (1), and is characterized in that: The liquid outlet device (1) comprises a sampling tube (11), a ball valve body (12), a liquid outlet pipe (13) and a moving mechanism (14); the ball valve body (12) is connected to the bottom of the sampling tube (11); the liquid outlet pipe (13) is connected to the bottom of the ball valve body (12); the moving mechanism (14) is connected between the ball valve body (12) and the liquid outlet pipe (13); the moving mechanism (14) is used to drive the liquid outlet pipe (13) to move back and forth relative to the ball valve body (12) in a direction close to or away from the sampling device (2); The sampling device (2) comprises a mounting plate (21), a rotating mechanism (23) and a plurality of fixing mechanisms (22), wherein the fixing mechanisms (22) are evenly spaced along the circumferential direction on the top of the mounting plate (21), and the fixing mechanisms (22) are used to place and fix sampling bottles, and the rotating mechanism (23) is connected to a bottom plate (231) of the mounting plate (21), and the rotating mechanism (23) is used to drive the mounting plate (21) to rotate, so that the sampling bottles in any fixing mechanism (22) of the mounting plate (21) are all located below the liquid outlet pipe (13).

2. A sampling device according to claim 1, characterized in that: The ball valve body (12) comprises a valve seat (121), a ball core (122), and a rotating handle (123); a valve cavity (124) communicating with the sampling tube (11) and the liquid outlet tube (13) is provided in the valve seat (121); the ball core (122) is arranged in the valve cavity (124); a sampling cavity (125) is provided in the ball core (122); the rotating handle (123) is rotatably connected to the valve seat (121); one end of the rotating handle (123) extends into the valve seat (121) and is connected to the outer wall of the ball core (122); the rotating handle (123) is used to drive the ball core (122) to rotate in the valve cavity (124); and the opening of the sampling cavity (125) is respectively communicated with the sampling tube (11) and the liquid outlet tube (13) during the rotation of the ball core (122).

3. A sampling device according to claim 2, characterized in that: Liquid outlet channels (126) are provided on both sides of the lower end of the valve cavity (124) in the valve seat (121), a liquid outlet hole (127) communicating with the liquid outlet channel (126) is provided on the valve seat (121), and a blocking cap (128) is provided at the liquid outlet hole (127).

4. A sampling device according to claim 2, characterized in that: The cross section of the sampling cavity (125) is in the shape of an inverted trapezoid.

5. A sampling device according to claim 2, characterized in that: The liquid outlet pipe (13) comprises a connecting pipe (131) and a mounting pipe (132); the top end of the connecting pipe (131) is connected to the lower end of the valve seat (121); the connecting pipe (131) is in communication with the valve chamber (124); the bottom of the connecting pipe (131) is slidably connected to the mounting pipe (132); a bellows (133) is connected between the top of the mounting pipe (132) and the bottom of the connecting pipe (131); and the moving mechanism (14) drives the mounting pipe (132) to move back and forth relative to the connecting pipe (131) in a direction close to or away from the sampling device (2).

6. A sampling device according to claim 5, characterized in that: The moving mechanism (14) comprises a protective shell (141), wherein the protective shell (141) is connected to the outer side of the valve seat (121), the bottom of the protective shell (141) is equidistantly connected to a sleeve (142), the inner cavity of the sleeve (142) is slidably connected to a telescopic rod (143), the bottom end of the telescopic rod (143) passes through the sleeve (142) and extends to the outside of the sleeve (142) to be connected to a fixing plate (144), the inner side of the fixing plate (144) is connected to the outer side of the mounting tube (132), the inner cavity of the telescopic rod (143) is threadedly connected to a threaded rod (145), and the threaded rod (145) The top of the threaded rod (145) passes through the telescopic rod (143), the sleeve (142) and the protective shell (141) in sequence and extends to the inner cavity of the protective shell (141). A driving component (146) is arranged on the top of the protective shell (141). The driving component (146) is transmission-connected with the threaded rod (145). The driving component (146) is used to drive the threaded rod (145) to move back and forth relative to the valve seat (121) in a direction close to or away from the sampling device (2), thereby driving the installation tube (132) to move back and forth relative to the connecting tube (131) in a direction close to or away from the sampling device (2).

7. A sampling device according to claim 6, characterized in that: The driving assembly (146) includes a protection box (1461), wherein the protection box (1461) is fixedly mounted on the top of the protective shell (141), and a driving motor (1462) is mounted in the inner cavity of the protection box (1461), and an output shaft of the driving motor (1462) passes through the protection box (1461) and the protective shell (141) in sequence and extends to the inner cavity of the protective shell (141), and an inner gear ring (1463) is rotatably connected to the inner cavity of the protective shell (141), and the inner side of the inner gear ring (1463 is respectively meshed with the threaded rod (145) and the output shaft of the driving motor (1462).

8. A sampling device according to claim 6, characterized in that: The fixing mechanism (22) comprises a fixing tube (221), the fixing tube (221) being equidistantly mounted on the top of the mounting plate (21), the inner cavity of the fixing tube (221) being slidably connected to a circular plate (222), fixing boxes (223) being mounted on both sides of the fixing tube (221), the top of the inner cavity of the fixing box (223) being slidably connected to a moving rod (224), the inner end of the moving rod (224) respectively passing through the fixing box (223) and the fixing tube (221) in sequence and extending to the inner cavity of the fixing tube (221) and being connected to an arc-shaped clamp The movable rod (224) is located at the bottom of one end of the fixed box (223) and is connected to a push plate (226). The lower end of the push plate (226) is hinged with a rocker (227). One end of the rocker (227) passes through the fixed box (223) and the fixed tube (221) in sequence and extends to the inner cavity of the fixed tube (221) and is located below the circular plate (222). The outer end of the movable rod (224) is connected to a return spring (228). The outer end of the return spring (228) is connected to the side wall of the inner cavity of the fixed box (223).

9. A sampling device according to claim 8, characterized in that: The rotating mechanism (23) comprises a bottom plate (231), the bottom plate (231) is arranged below the mounting plate (21), a receiving tube (232) is installed on the top of the bottom plate (231), a servo motor (233) is installed in the inner cavity of the receiving tube (232), and an output shaft of the servo motor (233) passes through the receiving tube (232) and extends to the outside of the receiving tube (232) and is connected to the bottom of the mounting plate (21).

10. A sampling device according to claim 9, characterized in that: A supporting slide ring (234) is installed at the bottom of the mounting plate (21), a supporting slide seat (235) is installed at the top of the receiving tube (232), and the surface of the supporting slide ring (234) is rotatably connected to the inner cavity of the supporting slide seat (235).

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