Automatic sampling equipment for milk tankers

Abstract

The present invention discloses an automatic sampling device for a milk tanker, comprising a sampling platform, a milk tanker and a digital display control panel, wherein two buffer seat structures symmetrically distributed with the sampling platform as the center are provided on the left and right sides of the sampling platform, a U-shaped sampling bracket is provided between the upper sides of the two buffer seat structures, the U-shaped opening of the sampling bracket faces downward, and the lower two ends are respectively movably provided on the two buffer seat structures along the width direction of the sampling platform, and the left and right sides of the sampling bracket are provided with positioning components for abutting and positioning with the tank body of the milk tanker; during the movement of the milk tanker, the buffer seat structure, the sampling bracket and the positioning component cooperate to facilitate the automatic positioning between the sampling component and the top cover.

Description

Technical Field

[0001] The present invention relates to the field of milk tanker sampling equipment, in particular to automatic milk tanker sampling equipment. Background Art

[0002] When sampling milk from a milk tanker truck on a farm, workers usually need to use a ladder to climb to the top of the truck, open the top cover, and insert a long-handled container into the tank to manually sample. The high height of the tanker truck not only makes it difficult to ensure the safety of the workers, but also makes sampling inconvenient and time-consuming.

[0003] Application number CN202010938822.X discloses an automated sampling device for a milk tanker truck, comprising a lifting mechanism, a sampling mechanism, a traveling mechanism, a sample collection mechanism, and a control mechanism. The lifting mechanism comprises an electric push rod, a support plate, and a lifting mechanism. The piston rod end of the electric push rod is fixedly connected to the lower end surface of the support plate. The lifting mechanism is fixedly mounted on the lower end surface of the support plate.

[0004] However, the existing technology has the following problems:

[0005] 1. It is not easy to locate the position between the sampling equipment and the milk tanker while the milk tanker is moving;

[0006] 2. After the milk tanker and the sampling device are positioned, it is not convenient to automatically sample the milk tanker and reset the sampling device after sampling. Summary of the Invention

[0007] (1) Technical problems solved

[0008] The purpose of the present invention is to provide an automatic sampling device for a milk tanker in order to solve the above problems.

[0009] (2) Technical solution

[0010] To achieve the above objectives, the present invention provides the following technical solutions:

[0011] The present invention provides an automated sampling device for milk tankers, comprising a sampling platform, a milk tanker, and a digital display control panel. Two buffer seat structures are symmetrically distributed with the sampling platform as the center, disposed on the left and right sides of the sampling platform. A U-shaped sampling bracket is disposed between the upper sides of the two buffer seat structures. The U-shaped opening of the sampling bracket faces downward, and the lower ends of the sampling bracket are movably disposed on the two buffer seat structures along the width direction of the sampling platform. Positioning assemblies are disposed on the left and right sides of the sampling bracket for abutting and positioning with the tank body of the milk tanker.

[0012] A top cover is provided on the top of the tank body, a sampling hole is provided on the top cover, a hole opening and closing structure for opening and closing the sampling hole is provided at the sampling hole, and a sampling component for sampling the liquid inside the tank body through the sampling hole is provided on the top of the sampling bracket;

[0013] When the X-axis positioning assembly achieves abutment positioning with the tank body, the positioning assembly drives the sampling bracket to move on the buffer seat structure along the left and right directions of the sampling platform;

[0014] When the X-axis position positioning component realizes the abutment positioning with the tank body, the milk tanker drives the sampling bracket to move through the position positioning component when it moves forward and backward on the sampling platform. At this time, the buffer seat structure plays a buffering role in the front and rear directions of the sampling bracket, and when the position positioning component is separated from the milk tanker, the buffer seat structure realizes the resetting of the sampling bracket.

[0015] Furthermore, the buffer seat structure includes a base, one side of the base is fixedly connected to the sampling platform, the upper side of the base is provided with a buffer seat that slides along the front and rear directions of the sampling platform, the lower side of the buffer seat is fixedly connected to two or more parallel slide rails, the upper surface of the base is provided with a slide groove that corresponds to the slide rails one by one and is slidably connected, the upper side of the base is fixedly provided with a back plate, the side of the buffer seat close to the back plate is fixedly connected to one end of the first guide rod, the other end of the first guide rod slides through the first guide hole provided at the corresponding position of the back plate, and a first spring is nested on the outside of the first guide rod between the back plate and the buffer seat, and the two ends of the first spring are respectively fixedly connected to the buffer seat and the back plate.

[0016] Furthermore, the sampling bracket includes an upper crossbeam, lower support rods are provided on the lower sides of both ends of the upper crossbeam, and height adjustment structures are provided between the upper ends of the two lower support rods and the upper crossbeam;

[0017] The lifting mechanism is a set of one or more first cams, and the first cam is connected with the up-down knob of the lifting link lever of the second end of the lifting link to the upper and lower ends of the lifting link lever of the second end. The lifting mechanism is a set of one or more first cams, and the first cam is connected with the second cam by the up-down knob. The lifting mechanism is a set of one or more first cams, and the second cam is connected with the second cam by the up-down knob.

[0018] Furthermore, the position positioning assembly includes a second electric telescopic rod fixedly arranged on the sampling bracket, the push rod head end of the second electric telescopic rod is fixedly connected to one end of the second spring, the other end of the second spring is fixedly connected to a U-shaped wheel frame, a positioning wheel is rotatably arranged in the wheel frame, and the end of the wheel frame close to the second electric telescopic rod is fixedly connected to a positioning column sleeved in the second spring, the positioning column is provided with a first pressure sensor near the push rod head end of the second electric telescopic rod, the push rod head end of the second electric telescopic rod is fixedly connected to one end of the L-shaped support rod, and the other end of the L-shaped support rod is provided with a second pressure sensor, and a limit baffle is fixedly provided on the outside of the tank body for cooperating with the second pressure sensor. The output end of the digital display control panel is electrically connected to the input end of the second electric telescopic rod, and the output ends of the first pressure sensor and the second pressure sensor are respectively electrically connected to the input end of the digital display control panel.

[0019] Furthermore, the sampling assembly includes a sampling joint and a liquid pump, two lifting support rails symmetrically distributed with the liquid pump as the center are provided on both sides of the liquid pump, the lower ends of the two lifting support rails are fixedly connected to the top side of the sampling bracket, and the two lifting support rails are fixedly connected on one side close to each other with more than two guide ribs extending in the up and down directions, and a guide groove sliding with the guide ribs is provided on the outer side of the liquid pump, the liquid outlet of the liquid pump faces downward and is connected to a sampling tube, and the top side of the sampling bracket is provided with a sampling tube lifting drive structure for driving the sampling tube and the liquid pump to move up and down, the liquid inlet of the liquid pump faces upward and is connected to one end of the liquid outlet pipe, the other end of the liquid outlet pipe is connected to one end of two liquid guide tubes, an electromagnetic three-way valve is provided between the two liquid guide tubes and the liquid outlet pipe, and the two liquid guide tubes The other end is connected to a liquid outlet plug, and placement racks are fixedly provided on the left and right sides of the sampling bracket, and a sampling box is detachably provided on each placement rack. A liquid inlet pipe joint for inserting the liquid outlet plug is provided on the upper side of the sampling box, and a U-shaped opening groove for passing the liquid guide tube is provided at one end of the two lifting support rails away from each other. Tube fixing ribs for fixing the liquid guide tube are fixedly provided on the left and right sides of the sampling bracket, and the sampling joint is fixedly provided on the lower side of the top of the sampling bracket, and a through hole for passing the sampling tube is provided through the middle position of the sampling joint. A conical sealing joint with a narrow upper part and a wide lower part is provided at the upper opening of the sampling hole, and a conical groove matching the conical sealing joint is provided on the lower side of the sampling joint, and more than two sealing rubber rings are fixedly provided on the inner wall of the conical groove.

[0020] Furthermore, the sampling tube lifting drive structure includes two driving wheels, which are symmetrically distributed on both sides of the sampling tube. An annular groove is provided on the outer side of the driving wheel along its circumferential direction. The central axis of each driving wheel is matched with a wheel axle, and the two ends of the wheel axle are rotatably connected to support plates. The lower sides of the two support plates are fixedly arranged on the top side of the sampling bracket. A motor is fixedly arranged at the central axis of one of the driving wheels, and the output shaft end of the motor and the wheel axle are fixedly connected to each other and share the same central axis. When the output shaft of the motor rotates, the output shaft of the motor drives the wheel axle and the driving wheel to rotate under the support of the support plate, and the output end of the digital display control panel is electrically connected to the input end of the motor.

[0021] Furthermore, the hole opening and closing structure includes a third electric telescopic rod fixedly arranged on one side of the top cover, the push rod head end of the third electric telescopic rod faces the sampling hole and is fixedly connected to a sealing slide, an opening and closing slide groove for sliding the sealing slide is provided in the top cover, and a through hole is provided on the sealing slide. When the push rod of the third electric telescopic rod reaches the minimum stroke, the sampling hole and the through hole are correspondingly connected to each other; when the push rod of the third electric telescopic rod reaches the maximum stroke, the sampling hole and the through hole are staggered and separated from each other, and the sealing slide is used to seal the sampling hole, and the output end of the digital display control panel is electrically connected to the input end of the third electric telescopic rod.

[0022] Furthermore, the milk tanker includes a rectangular seat plate, and several groups of wheels are evenly distributed along the length direction of the lower side of the seat plate, each group includes two wheels symmetrically distributed in the width direction of the seat plate, and a tank body is provided on the upper side of the seat plate. Two parallel travel indicator belts are provided along the left and right directions on the upper side of the sampling platform, and the spacing between the two travel indicator belts is consistent with the spacing between the two wheels symmetrically distributed in the width direction of the seat plate.

[0023] Furthermore, an indicator light strip is provided on the upper side of the sampling platform. The indicator light strip is provided in the middle position along the left and right directions of the sampling platform. The length direction of the indicator light strip is consistent with the front and back directions of the sampling platform. The output end of the digital display control panel is electrically connected to the input end of the indicator light strip. When the second pressure sensor and the limit baffle abut against each other, the second pressure sensor feeds back an electrical signal to the digital display control panel, and the digital display control panel controls the opening of the indicator light strip.

[0024] (3) Beneficial effects

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. During the movement of the milk tanker, the buffer seat structure, sampling bracket and positioning assembly cooperate to facilitate the automatic positioning between the sampling assembly and the top cover;

[0027] 2. After the milk tanker and sampling equipment are positioned, the sampling assembly and the hole opening and closing structure cooperate to facilitate automatic sampling. The buffer seat structure facilitates buffering before the milk tanker stops moving, and resets the sampling bracket and sampling assembly after sampling.

[0028] 3. The sampling bracket, sampling assembly and hole opening and closing structure are coordinated to facilitate sampling of the milk tanker in a sealed state, reducing the exposure time of the milk in the milk tanker to the outside air and avoiding contamination;

[0029] 4. The position positioning component and the indicator light strip can cooperate to indicate that the milk tanker and the sampling bracket are positioned and matched with each other. When the indicator light strip is on, it can indicate to the driver to stop driving, and when the indicator light strip is off, it can indicate to the driver to continue driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0032] Figure 2 This invention Figure 1 AA cross-sectional structural diagram;

[0033] Figure 3 This invention Figure 2 A schematic diagram of the partially enlarged structure at point B;

[0034] Figure 4 This invention Figure 1 Schematic diagram of the three-dimensional structure;

[0035] Figure 5 This invention Figure 1 A schematic diagram of the three-dimensional structure in another direction;

[0036] Figure 6 This invention Figure 4 A schematic diagram of the partially enlarged structure at point C;

[0037] Figure 7 This invention Figure 5 Schematic diagram of the local enlarged structure at point D.

[0038] 1. Sampling platform; 2. Buffer seat structure; 201. Base; 202. Slide rail; 203. Buffer seat; 204. Slide groove; 205. Abutment; 206. First guide rod; 207. First spring; 208. Limit plate; 209. Wheel groove; 3. Sampling bracket; 3a. Lower support rod; 3b. Upper crossbeam; 3c. First electric telescopic rod; 3d. Second guide rod; 3e. Moving wheel; 4. Positioning assembly; 401. Second electric telescopic rod; 402. Wheel frame; 403. Second spring; 404. Positioning column; 405. First pressure sensor; 406. L-shaped support rod; 407. Second pressure sensor; 408. Limit baffle; 409. Positioning wheel; 5. Sampling assembly; 501. Sampling joint; 501a. Sealing rubber ring; 502. Sampling tube lift Lowering drive structure; 502a, support plate; 502b, drive wheel; 502c, annular groove; 502d, wheel axle; 502e, motor; 503, sampling tube; 504, liquid pump; 505, electromagnetic three-way valve; 506, liquid guide tube; 507, tube fixing rib; 508, liquid outlet plug; 509, sampling box; 509a, liquid inlet pipe joint; 510, guide rib; 511, guide slide; 512, lifting support rail; 513, U-shaped opening groove; 514, placement rack; 6, milk tanker; 6a, seat plate; 6b, tank body; 6c, wheel; 6d, top cover; 6e, sampling hole; 6f, conical sealing joint; 7, hole opening and closing structure; 7a, third electric telescopic rod; 7b, sealing slide; 7c, through hole; 8, indicator light strip; 9, digital display control panel; 10, travel indicator strip. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0040] See also Figure 1-7As shown, the present invention provides an automated sampling device for milk tankers, comprising a sampling platform 1, a milk tanker 6, and a digital display control panel 9. The milk tanker 6 includes a rectangular seat plate 6a. Several sets of wheels 6c are evenly distributed along its length on the underside of the seat plate 6a. Each set includes two wheels 6c symmetrically distributed across the width of the seat plate 6a. A tank body 6b is disposed above the seat plate 6a. Two parallel progress indicator strips 10 are disposed along the upper left-right direction of the sampling platform 1. The spacing between the two progress indicator strips 10 is consistent with the spacing between the two wheels 6c symmetrically distributed across the width of the seat plate 6a. This specific structural design ensures that when the driver drives the milk tanker 6 across the sampling platform 1, the two wheels 6c disposed along the width of the milk tanker 6 correspond to the two progress indicator strips 10.

[0041] See the instructions attached Figure 1 、 2 As shown in Figure 4, two buffer seat structures 2 symmetrically distributed around the sampling platform 1 are provided on the left and right sides of the sampling platform 1. The buffer seat structure 2 includes a base 201, one side of the base 201 is fixedly connected to the sampling platform 1, and a buffer seat 203 is provided on the upper side of the base 201 for sliding along the front and rear directions of the sampling platform 1. The lower side of the buffer seat 203 is fixedly connected to two or more parallel slide rails 202. The upper surface of the base 201 is provided with a slide groove 204 which corresponds to the slide rail 202 and is slidably connected thereto. A butt plate 205 is fixedly provided on the upper side of the base 201. One end of the first guide rod 206 is fixedly connected to the side of the buffer seat 203 close to the butt plate 205. The other end of the first guide rod 206 slides through the first guide hole provided at the corresponding position of the butt plate 205. A first spring 207 is nested on the outer side of the first guide rod 206 between the butt plate 205 and the buffer seat 203. The two ends of the first spring 207 are respectively fixedly connected to the buffer seat 203 and the butt plate 205.

[0042] See the instructions attached Figure 1 and 4As shown, a U-shaped sampling bracket 3 is provided between the upper sides of the two buffer seat structures 2, and the sampling bracket 3 includes an upper crossbeam 3b, and lower support rods 3a are provided on the lower sides of both ends of the upper crossbeam 3b. A height adjustment structure is provided between the upper ends of the two lower support rods 3a and the upper crossbeam 3b; the height adjustment structure includes a first electric telescopic rod 3c fixedly provided at the end of the upper crossbeam 3b, the push rod head end of the first electric telescopic rod 3c faces downward and is fixedly connected to the top of the lower support rod 3a, and two second guide rods 3d symmetrically distributed with it as the center are provided on both sides of the first electric telescopic rod 3c, and the lower ends of the two second guide rods 3d are fixedly connected to the top of the lower support rod 3a. The upper ends of the two second guide rods 3d are slidably connected to the second guide holes provided at the corresponding positions of the ends of the upper crossbeam 3b, and the lower end of the lower support rod 3a is rotatably connected to more than two moving wheels 3e. These moving wheels 3e are evenly arranged along the front and rear directions of the sampling platform 1. The upper side of the buffer seat 203 is provided with wheel grooves 209 corresponding to the moving wheels 3e one by one. The moving wheels 3e move in the wheel grooves 209 along the left and right directions of the sampling platform 1. The buffer seat 203 is fixed with limit plates 208 for limiting the moving wheels 3e along the upper sides of both ends of the wheel grooves 209. The output end of the digital display control panel 9 is electrically connected to the input end of the first electric telescopic rod 3c.

[0043] See the instructions attached Figure 5 and 7As shown, the U-shaped opening of the sampling bracket 3 faces downward and the two ends of the lower part are respectively movably arranged on the two buffer seat structures 2 along the width direction of the sampling platform 1, and the left and right sides of the sampling bracket 3 are provided with position positioning components 4 for abutting and positioning with the tank body 6b of the milk tanker 6; the position positioning component 4 includes a second electric telescopic rod 401 fixedly arranged on the sampling bracket 3, the push rod head end of the second electric telescopic rod 401 is fixedly connected to one end of the second spring 403, and the other end of the second spring 403 is fixedly connected to a U-shaped wheel frame 402, a positioning wheel 409 is rotatably provided in the wheel frame 402, and the wheel frame 402 is fixedly connected to one end of the second electric telescopic rod 401. A positioning column 404 is sleeved in the second spring 403, and a first pressure sensor 405 is provided on the positioning column 404 near the push rod head end of the second electric telescopic rod 401. The push rod head end of the second electric telescopic rod 401 is fixedly connected to one end of an L-shaped support rod 406, and the other end of the L-shaped support rod 406 is provided with a second pressure sensor 407. A limit baffle 408 that cooperates and abuts with the second pressure sensor 407 is fixedly provided on the outer side of the tank body 6b, and the output end of the digital display control panel 9 is electrically connected to the input end of the second electric telescopic rod 401, and the output ends of the first pressure sensor 405 and the second pressure sensor 407 are respectively electrically connected to the input end of the digital display control panel 9. When the X-direction position positioning component 4 achieves abutment positioning with the tank body 6b, the position positioning component 4 drives the sampling bracket 3 to move on the buffer seat structure 2 in the left and right directions along the sampling platform 1; when the X-direction position positioning component 4 achieves abutment positioning with the tank body 6b, the milk tanker 6 drives the sampling bracket 3 to move through the position positioning component 4 when moving forward and backward in reverse on the sampling platform 1. At this time, the buffer seat structure 2 plays a buffering role on the sampling bracket 3 in the front and back directions, and when the position positioning component 4 is separated from the milk tanker 6, the buffer seat structure 2 realizes the resetting of the sampling bracket 3.

[0044] See the instructions attached Figure 2 and 3 As shown, a top cover 6d is provided on the top of the tank body 6b, and a sampling hole 6e is provided on the top cover 6d. A hole opening and closing structure 7 for realizing its opening and closing is provided at the sampling hole 6e. The hole opening and closing structure 7 includes a third electric telescopic rod 7a fixedly provided on one side of the top cover 6d, and the push rod head end of the third electric telescopic rod 7a faces the sampling hole 6e and is fixedly connected to a sealing slide 7b. An opening and closing slide groove for sliding the sealing slide 7b is provided in the top cover 6d, and a through hole 7c is provided on the sealing slide 7b. When the push rod of the third electric telescopic rod 7a reaches the minimum stroke, the sampling hole 6e and the through hole 7c are correspondingly connected to each other. When the push rod of the third electric telescopic rod 7a reaches the maximum stroke, the sampling hole 6e and the through hole 7c are staggered and separated from each other, and the sealing of the sampling hole 6e is achieved by the sealing slide 7b. The output end of the digital display control panel 9 is electrically connected to the input end of the third electric telescopic rod 7a.

[0045] See the instructions attached Figure 1 、 2 , 3, 4, 5 and 6, a sampling assembly 5 for sampling the liquid inside the tank body 6b through the sampling hole 6e is provided on the top of the sampling bracket 3; the sampling assembly 5 includes a sampling connector 501 and a liquid pump 504, and two lifting support rails 512 symmetrically distributed with the liquid pump 504 are provided on both sides of the liquid pump 504, and the lower ends of the two lifting support rails 512 are fixedly connected to the top side of the sampling bracket 3, and the sides of the two lifting support rails 512 close to each other are fixedly connected with more than two guide ribs 510 extending in the up-down direction, and a guide groove 511 sliding with the guide rib 510 is provided on the outer side of the liquid pump 504. The ribs 510 and the guide grooves 511 cooperate to guide the liquid pump 504 to move up and down. The liquid outlet of the liquid pump 504 faces downward and is connected to the sampling tube 503. The top side of the sampling bracket 3 is provided with a sampling tube lifting drive structure 502 for driving the sampling tube 503 and the liquid pump 504 to move up and down. The liquid inlet of the liquid pump 504 faces upward and is connected to one end of the liquid outlet pipe. The other end of the liquid outlet pipe is connected to one end of two liquid guide pipes 506. An electromagnetic three-way valve 505 is provided between the two liquid guide pipes 506 and the liquid outlet pipe. The other ends of the two liquid guide pipes 506 are connected to the liquid outlet plug 508. Through the above specific structural design The electromagnetic three-way valve 505 can realize the communication between the liquid outlet pipe and the two liquid guide pipes 506 respectively, so that the milk is sequentially discharged by the two liquid outlet plugs 508. The left and right sides of the sampling bracket 3 are fixedly provided with a placement rack 514. Each placement rack 514 is detachably provided with a sampling box 509. The upper side of the sampling box 509 is provided with a liquid inlet pipe joint 509a for inserting the liquid outlet plug 508. Furthermore, the outer side of the liquid inlet pipe joint 509a is provided with a thread and is threadedly connected with a sealing end cap. After the milk sample is introduced, the sealing end cap can be used to seal the liquid inlet pipe joint 509a. The two lifting support rails 51 The ends of the sampling bracket 3, each with a U-shaped opening 513 for passing the liquid guide tube 506, are each provided with a U-shaped opening 513. Tube-fixing ribs 507 for securing the liquid guide tube 506 are fixedly mounted on the left and right sides of the sampling bracket 3. The sampling connector 501 is fixedly mounted on the lower top side of the sampling bracket 3. A through-hole for passing the sampling tube 503 is provided in the middle of the sampling connector 501. A tapered sealing connector 6f, narrow at the top and wide at the bottom, is provided at the upper opening of the sampling hole 6e. A tapered groove is provided on the underside of the sampling connector 501 to mate with the tapered sealing connector 6f. Two or more sealing rubber rings 501a are fixedly mounted on the inner wall of the tapered groove. In actual use, the first electrically-operated telescopic rod 3c of the sampling bracket 3 drives the upper crossbeam 3b and the sampling connector 501 to move up and down, thereby separating and engaging the tapered sealing connector 6f. The sealing rubber ring 501a improves the sealing performance of the connection between the sampling connector 501 and the tapered sealing connector 6f.

[0046] The sampling tube lifting drive structure 502 includes two driving wheels 502b, which are symmetrically distributed on both sides of the sampling tube 503. An annular groove 502c is provided on the outer side of the driving wheel 502b along its circumferential direction. A wheel axle 502d is connected to the central axis of each driving wheel 502b, and the two ends of the wheel axle 502d are rotatably connected to the support plate 502a. The lower side of the two support plates 502a is fixedly set on the top side of the sampling bracket 3. A motor 502e is fixedly set at the central axis of one of the driving wheels 502b. The output shaft end of the motor 502e and the wheel axle 502d are fixedly connected to each other and share the same central axis. When the output shaft of the motor 502e rotates, the output shaft of the motor 502e drives the wheel axle 502d and the driving wheel 502b to rotate under the support of the support plate 502a. The output end of the digital display control panel 9 is electrically connected to the input end of the motor 502e. Through the above specific structural design, the output shaft of the motor 502e in one of the driving wheels 502b rotates to drive the driving wheel 502b to rotate. When the driving wheel 502b rotates, it cooperates with the other driving wheel 502b to drive the sampling tube 503 between the two to move up and down.

[0047] An indicator light strip 8 is provided on the upper side of the sampling platform 1. The indicator light strip 8 is provided in the middle position along the left-right direction of the sampling platform 1. The length direction of the indicator light strip 8 is consistent with the front-back direction of the sampling platform 1. The output end of the digital display control panel 9 is electrically connected to the input end of the indicator light strip 8. When the second pressure sensor 407 and the limit baffle 408 abut each other, the second pressure sensor 407 feeds back an electrical signal to the digital display control panel 9, and the digital display control panel 9 controls the opening of the indicator light strip 8. Through the above-mentioned specific structural design, when the second pressure sensor 407 and the limit baffle 408 abut each other, the digital display control panel 9 controls the opening of the indicator light strip 8, and the indicator light strip 8 provides an instruction to the driver to stop driving. When the second pressure sensor 407 and the limit baffle 408 are separated from each other, the digital display control panel 9 controls the closing of the indicator light strip 8, and the indicator light strip 8 provides an instruction to the driver to continue driving.

[0048] Working principle:

[0049] During use, when sampling the milk in the milk tanker 6, the milk tanker 6 moves to the sampling platform 1 and moves along the direction indicated by the travel indicator belt 10 on the upper surface of the sampling platform 1 to the bottom of the sampling bracket 3. At this time, the driver should try to keep the left and right wheels 6c of the milk tanker 6 corresponding to the positions of the two travel indicator belts 10. When the limit baffle 408 moves to the middle position between the second pressure sensor 407 and the positioning wheel 409, the digital display control panel 9 controls the second electric telescopic rods 401 push rods of the left and right positioning assemblies 4 to extend, thereby driving the second pressure sensor 407 and the positioning wheel 409 to move to the middle position between the second pressure sensor 407 and the positioning wheel 409. The sensor 407 and the positioning wheel 409 move toward the tank body 6b, the positioning wheel 409 first rolls against the outer wall of the tank body 6b, the second spring 403 is elastically compressed, and when the first pressure sensor 405 and the push rod head end of the second electric telescopic rod 401 abut each other, the first pressure sensor 405 transmits an electrical signal to the digital display control panel 9, and the digital display control panel 9 controls the push rod of the second electric telescopic rod 401 to stop extending. In this process, when the positioning wheel 409 rolls against the outer wall of the tank body 6b, the sampling bracket 3 moves on the wheel through the moving wheel 3e provided on the bottom side. The slot 209 moves, thereby adjusting the position of the sampling connector 501 of the sampling assembly 5 to correspond to the middle position in the left and right width direction of the tank body 6b. When the milk tanker 6 continues to move forward, the second pressure sensor 407 and the limit baffle 408 contact each other, and the second pressure sensor 407 transmits an electrical signal to the digital display control panel 9. The digital display control panel 9 controls the light strip 8 to turn on. When the driver sees the light strip 8 light up, he stops the movement of the milk tanker 6. During this process, the movement of the milk tanker 6 will continue to drive the sampling bracket 3 along the sliding direction of the slide rail 202 through the limit baffle 408. and the axial movement of the first guide rod 206. At this time, the first spring 207 is compressed, thereby ensuring that the sampling connector 501 of the sampling assembly 5 corresponds axially in the tank body 6b of the milk tanker 6, and finally ensuring that the sampling connector 501 corresponds to the position of the tapered sealing connector 6f. The first electric telescopic rod 3c of the sampling bracket 3 drives the upper crossbeam 3b to move downward, so that the sampling connector 501 and the tapered sealing connector 6f are docked and sealed, and the digital display control panel 9 controls the push rod of the third electric telescopic rod 7a to retract to the minimum stroke, so that the through hole 7c and the sampling hole 6e are connected to each other.

[0050] The output shaft of the motor 502e of the sampling tube lifting drive structure 502 rotates to drive the driving wheel 502b to rotate, and the driving wheel 502b rotates to drive the sampling tube 503 and the liquid pump 504 to move downward, so that the sampling tube 503 passes through the sampling hole 6e and the through hole 7c in sequence and moves into the tank body 6b. When the sampling tube 503 descends to a certain depth and contacts the milk in the tank body 6b, the digital display control panel 9 controls the electromagnetic three-way valve 505 to connect the sampling tube 503 with one of the liquid guide tubes 506. The digital display control panel 9 controls to open the liquid pump 504, and the liquid pump 504 passes through the sampling tube 503, the liquid guide tube 506 and the liquid outlet plug 508 in sequence to the sampling box 509 for sampling. After sampling is completed, the sampling tube lifting drive structure 502 drives the sampling tube 503 to be taken out of the tank body 6b, and then the hole opening and closing structure 7 seals the sampling hole 6e. The first electric telescopic rod 3c of the sampling bracket 3 drives the upper beam 3b and the sampling joint 501 to move upward and separate from the conical sealing joint 6f. The second electric telescopic rod 401 push rod of the position positioning assembly 4 retracts, thereby driving the second pressure sensor 407 and the positioning wheel 409 to separate from the milk tanker 6. The digital display control panel 9 controls the light of the indicator light strip 8 to turn off and disappear, and the driver drives the milk tanker 6 out of the sampling platform 1 again. The present application is also applicable to sampling of other liquid tankers, not just milk.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An automatic sampling device for a milk tanker, characterized by: The invention comprises a sampling platform (1), a milk tanker (6) and a digital display control panel (9); two buffer seat structures (2) are symmetrically distributed with the sampling platform (1) on the left and right sides; a U-shaped sampling bracket (3) is provided between the upper sides of the two buffer seat structures (2); the U-shaped opening of the sampling bracket (3) faces downward, and the lower ends are respectively arranged on the two buffer seat structures (2) along the width direction of the sampling platform (1); and position positioning components (4) for abutting and positioning with the tank body (6b) of the milk tanker (6) are provided on the left and right sides of the sampling bracket (3); A top cover (6d) is provided on the top of the tank body (6b), a sampling hole (6e) is provided on the top cover (6d), a hole opening and closing structure (7) for opening and closing the sampling hole (6e) is provided at the top of the sampling bracket (3), and a sampling assembly (5) for sampling liquid inside the tank body (6b) through the sampling hole (6e) is provided. When the X-axis position positioning component (4) achieves abutment positioning with the tank body (6b), the position positioning component (4) drives the sampling bracket (3) to move on the buffer seat structure (2) along the left and right directions of the sampling platform (1); When the X-axis position positioning assembly (4) achieves abutment positioning with the tank body (6b), the milk tanker (6) drives the sampling bracket (3) to move through the position positioning assembly (4) when moving forward and backward on the sampling platform (1). At this time, the buffer seat structure (2) plays a buffering role for the sampling bracket (3) in the front and rear directions, and when the position positioning assembly (4) is separated from the milk tanker (6), the buffer seat structure (2) realizes the reset of the sampling bracket (3).

2. The automatic sampling device for a milk tanker according to claim 1, characterized in that: The buffer seat structure (2) includes a base (201), one side of the base (201) is fixedly connected to the sampling platform (1), the upper side of the base (201) is provided with a buffer seat (203) which slides along the front-back direction of the sampling platform (1), the lower side of the buffer seat (203) is fixedly connected to two or more parallel slide rails (202), the upper side surface of the base (201) is provided with a slide groove (204) which corresponds to the slide rail (202) and is slidably connected to each other, and the upper side of the base (201) is fixed. A support plate (205) is provided, and one end of a first guide rod (206) is fixedly connected to one side of the buffer seat (203) close to the support plate (205), and the other end of the first guide rod (206) slides through a first guide hole opened at a corresponding position of the support plate (205). A first spring (207) is nested on the outer side of the first guide rod (206) located between the support plate (205) and the buffer seat (203), and the two ends of the first spring (207) are fixedly connected to the buffer seat (203) and the support plate (205) respectively.

3. The automatic sampling device for a milk tanker according to claim 2, characterized in that: The sampling support (3) comprises an upper crossbeam (3b), lower support rods (3a) are provided at the lower sides of both ends of the upper crossbeam (3b), and height adjustment structures are provided between the upper ends of the two lower support rods (3a) and the upper crossbeam (3b); The height adjustment structure comprises a first electric telescopic rod (3c) fixedly arranged at the end of the upper crossbeam (3b), the push rod head end of the first electric telescopic rod (3c) facing downward and fixedly connected to the top end of the lower support rod (3a), two second guide rods (3d) symmetrically distributed around the first electric telescopic rod (3c) are provided on both sides, the lower ends of the two second guide rods (3d) are fixedly connected to the top end of the lower support rod (3a), the upper ends of the two second guide rods (3d) are slidably connected to the second guide holes opened at the corresponding positions of the end of the upper crossbeam (3b), and the lower end of the lower support rod (3a) is rotated. There are more than two moving wheels (3e) that are dynamically connected. These moving wheels (3e) are evenly arranged along the front and rear directions of the sampling platform (1). The upper side of the buffer seat (203) is provided with wheel grooves (209) corresponding to the moving wheels (3e). The moving wheels (3e) move in the left and right directions along the sampling platform (1) in the wheel grooves (209). The buffer seat (203) is fixed with limiting plates (208) for limiting the moving wheels (3e) on the upper sides of both ends of the wheel grooves (209). The output end of the digital display control panel (9) is electrically connected to the input end of the first electric telescopic rod (3c).

4. The automatic sampling device for a milk tanker according to claim 1, characterized in that: The position positioning assembly (4) comprises a second electric telescopic rod (401) fixedly arranged on the sampling bracket (3); the push rod head end of the second electric telescopic rod (401) is fixedly connected to one end of a second spring (403); the other end of the second spring (403) is fixedly connected to a U-shaped wheel frame (402); a positioning wheel (409) is rotatably arranged in the wheel frame (402); one end of the wheel frame (402) close to the second electric telescopic rod (401) is fixedly connected to a positioning column (404) sleeved in the second spring (403); the positioning column (404) is provided close to the push rod head end of the second electric telescopic rod (401); A first pressure sensor (405) is provided, a push rod head end of the second electric telescopic rod (401) is fixedly connected to one end of an L-shaped support rod (406), a second pressure sensor (407) is provided at the other end of the L-shaped support rod (406), a limit baffle (408) that cooperates with and abuts against the second pressure sensor (407) is fixedly provided on the outer side of the tank body (6b), an output end of the digital display control panel (9) is electrically connected to an input end of the second electric telescopic rod (401), and the output ends of the first pressure sensor (405) and the second pressure sensor (407) are respectively electrically connected to the input end of the digital display control panel (9).

5. The automatic sampling device for a milk tanker according to claim 1, characterized in that: The sampling assembly (5) comprises a sampling connector (501) and a liquid pump (504). Two lifting support rails (512) symmetrically distributed around the liquid pump (504) are provided on both sides of the liquid pump (504). The lower ends of the two lifting support rails (512) are fixedly connected to the top side of the sampling bracket (3). Two or more guide ribs (510) extending in the vertical direction are fixedly connected to the sides of the two lifting support rails (512) close to each other. A guide slot (510) that slides in cooperation with the guide ribs (510) is provided on the outer side of the liquid pump (504). 11), the liquid outlet of the liquid pump (504) faces downward and is connected to the sampling tube (503), the top side of the sampling bracket (3) is provided with a sampling tube lifting drive structure (502) for driving the sampling tube (503) and the liquid pump (504) to move up and down, the liquid inlet of the liquid pump (504) faces upward and is connected to one end of the liquid outlet tube, the other end of the liquid outlet tube is connected to one end of two liquid guide tubes (506), an electromagnetic three-way valve (505) is provided between the two liquid guide tubes (506) and the liquid outlet tube, and the other end of the two liquid guide tubes (506) is connected to the other end of the liquid guide tube. The ends of the two lifting support rails (512) are connected to the liquid outlet plug (508), the left and right sides of the sampling bracket (3) are fixedly provided with a placement rack (514), each placement rack (514) is detachably provided with a sampling box (509), the upper side of the sampling box (509) is provided with a liquid inlet pipe joint (509a) for inserting the liquid outlet plug (508), and the ends of the two lifting support rails (512) away from each other are provided with a U-shaped opening groove (513) for passing the liquid guide tube (506), and the left and right sides of the sampling bracket (3) are fixedly provided with a U-shaped opening groove (513) for inserting the liquid guide tube (506). (506) is fixed to the tube fixing rib (507), the sampling connector (501) is fixedly arranged on the lower side of the top of the sampling bracket (3), a through hole for passing the sampling tube (503) is provided in the middle position of the sampling connector (501), a conical sealing connector (6f) which is narrow at the top and wide at the bottom is provided at the upper end opening of the sampling hole (6e), a conical groove which matches the conical sealing connector (6f) is provided on the lower side of the sampling connector (501), and two or more sealing rubber rings (501a) are fixedly provided on the inner wall of the conical groove.

6. The automatic sampling device for a milk tanker according to claim 5, characterized in that: The sampling tube lifting drive structure (502) comprises two driving wheels (502b), which are symmetrically distributed on both sides of the sampling tube (503). An annular groove (502c) is provided on the outer side of the driving wheel (502b) along its circumferential direction. A wheel shaft (502d) is connected to the central axis of each driving wheel (502b). Both ends of the wheel shaft (502d) are rotatably connected to support plates (502a). The lower sides of the two support plates (502a) are fixedly arranged on the sampling support. On the top side of the frame (3), a motor (502e) is fixedly provided at the center axis of one of the driving wheels (502b), and the output shaft end of the motor (502e) and the wheel shaft (502d) are fixedly connected to each other and share the same center axis. When the output shaft of the motor (502e) rotates, the output shaft of the motor (502e) drives the wheel shaft (502d) and the driving wheel (502b) to rotate under the support of the support plate (502a), and the output end of the digital display control panel (9) is electrically connected to the input end of the motor (502e).

7. The automatic sampling device for a milk tanker according to claim 5, characterized in that: The hole opening and closing structure (7) comprises a third electric telescopic rod (7a) fixedly arranged on one side of the top cover (6d); the push rod head end of the third electric telescopic rod (7a) faces the sampling hole (6e) and is fixedly connected to a sealing slide plate (7b); an opening and closing slide groove for sliding the sealing slide plate (7b) is provided in the top cover (6d); a through hole (7c) is provided on the sealing slide plate (7b); when the push rod of the third electric telescopic rod (7a) reaches a minimum stroke, the sampling hole (6e) and the through hole (7c) are correspondingly connected to each other; when the push rod of the third electric telescopic rod (7a) reaches a maximum stroke, the sampling hole (6e) and the through hole (7c) are dislocated and separated from each other, and the sealing slide plate (7b) realizes sealing of the sampling hole (6e); and the output end of the digital display control panel (9) is electrically connected to the input end of the third electric telescopic rod (7a).

8. The automatic sampling device for a milk tanker according to claim 1, characterized in that: The milk tanker (6) comprises a rectangular seat plate (6a), a plurality of evenly distributed groups of wheels (6c) are provided on the lower side of the seat plate (6a) along its length direction, each group comprising two wheels (6c) symmetrically distributed in the width direction of the seat plate (6a), a tank body (6b) is provided on the upper side of the seat plate (6a), and two parallel running indicator strips (10) are provided on the upper side of the sampling platform (1) along the left-right direction, the spacing between the two running indicator strips (10) being consistent with the spacing between the two wheels (6c) symmetrically distributed in the width direction of the seat plate (6a).

9. The automatic sampling device for a milk tanker according to claim 4, characterized in that: An indicator light strip (8) is provided on the upper side of the sampling platform (1), and the indicator light strip (8) is provided in the middle position along the left-right direction of the sampling platform (1). The length direction of the indicator light strip (8) is consistent with the front-back direction of the sampling platform (1). The output end of the digital display control panel (9) is electrically connected to the input end of the indicator light strip (8). When the second pressure sensor (407) and the limit baffle (408) abut against each other, the second pressure sensor (407) feeds back an electrical signal to the digital display control panel (9), and the digital display control panel (9) controls the indicator light strip (8) to be turned on.

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