Sandstone separation efficiency monitor for mixing station

Abstract

The invention relates to the technical field of engineering, in particular to a mixing station gravel separation efficiency monitor which comprises analysis equipment, the analysis equipment is arranged at the upper end of a base, a conveying belt support is arranged on the side of the base, a conveying belt for conveying separated gravel is arranged in the conveying belt support, and an automatic sampling mechanism is arranged at the upper end of the conveying belt support. A separation monitoring mechanism is arranged at the upper end of the base, the automatic sampling mechanism comprises an inclined moving module and an automatic discharging module, and the inclined moving module is used for moving the sampled sampling box to the position above the feeding port. The discharging measuring module is designed to be matched with the conveying and screening module, the screened sand and stone samples can be weighed and discharged, the sand and stone separation efficiency can be conveniently calculated according to statistical data, the pushing base hinged to the upper end of the piston rod can continuously adjust the angle attached to the screening device, the screening device can be stably stressed, and the screening efficiency is improved. And the material discharging effect is improved.

Description

Technical Field

[0001] The invention relates to the field of engineering technology, and in particular to a sand and gravel separation efficiency monitor for a mixing station. Background Art

[0002] Mixing plant, also known as mixing plant, is a general term for large-scale machinery used for civil engineering mixing construction in industrial construction. It plays an important role in concrete production and various civil engineering projects. The sand and gravel separation efficiency analyzer is mainly used for particle size analysis of particulate matter, and it can also assist in evaluating the efficiency of sand and gravel separation. By analyzing the changes in the particle size distribution of particulate matter at the inlet and outlet of the separator, the effect of sand and gravel separation can be indirectly judged. In the vibrating screen, although the material is in a dynamic state during the screening process, by installing a weighing sensor at the discharge port, real-time weighing of the screened material can also be achieved. However, in this case, special calibration and setting of the sensor may be required to ensure the accuracy of the weighing.

[0003] In order to monitor the sand and gravel separation efficiency in real time, it is necessary to take samples of the separated sand and gravel at regular intervals. The existing sand and gravel sampling requires manual assisted sampling, which not only increases the workload, but also makes it difficult to monitor the performance of the sand and gravel separator in real time. A large amount of unqualified sand and gravel separation products are easily mixed in a short period of time, which brings trouble and inconvenience to the mixing station. In addition, the equipment effects are relatively single and require manual cooperation. It is difficult to combine sampling and testing, which is not conducive to continuous monitoring and the monitoring effect is poor.

[0004] Therefore, a sand and gravel separation efficiency monitor for a mixing station is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a sand and gravel separation efficiency monitor for a mixing station to solve the problems of inconvenient sampling and poor monitoring effect mentioned in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mixing station sand and gravel separation efficiency monitor, comprising an analysis device, the analysis device is arranged at the upper end of a base, a conveyor belt support is arranged on the side of the base, a conveyor belt support is arranged inside the conveyor belt support for conveying separated sand and gravel, an automatic sampling mechanism is arranged at the upper end of the conveyor belt support, a separation monitoring mechanism is arranged at the upper end of the base, the automatic sampling mechanism comprises an inclined moving module and an automatic unloading module, the inclined moving module is used to move the sampling box after sampling to the top of the feed port, and the automatic unloading module uses the process of the inclined moving module to pour the sand and gravel sample in the sampling box into the feed port; The separation monitoring mechanism includes a conveying and screening module and a discharge measuring module. The conveying and screening module screens the sand and gravel samples poured from the feed port multiple times, and the discharge measuring module is used to discharge the screened sand and gravel samples and weigh and measure the screened sand and gravel samples.

[0007] Preferably, the tilting moving module includes a bracket fixedly mounted on the upper end of the conveyor belt support, a first motor is arranged on the upper end of the bracket, an output shaft of the first motor is fixedly connected to one end of a reciprocating screw, the other end of the reciprocating screw passes through the bracket and is rotatably connected to a bracket plate, the bracket plate is fixedly mounted inside the bracket, an outer side of the reciprocating screw is threadedly connected to a movable plate, the bottom end of the movable plate is fixedly connected to two groups of connecting plates, and the lower side portions of the two groups of connecting plates are hinged to the rear portions of both sides of the sampling box.

[0008] Preferably, both sides of the movable plate are fixedly connected with guide rods, the guide rods are clamped in the guide grooves and slidably connected, and the guide grooves are opened on the side walls of the bracket.

[0009] Preferably, the automatic unloading module includes a rope fixedly connected to the upper end of the sampling box, the rope is fixedly connected to the bottom end of the push rod, the upper end of the push rod passes through the movable plate and is fixedly connected to the top plate, the outer side of the push rod is sleeved with a first spring, and the first spring is arranged at the upper end of the movable plate.

[0010] Preferably, a baffle is attached to the upper end of the sampling box, and the baffle is fixed on the connecting plate.

[0011] Preferably, the conveying and screening module includes a conveying cylinder mounted on the upper end of a conveyor belt support, a feed port is provided at the upper end of the conveying cylinder, two sets of vertical plates are fixedly connected to the upper end of the base, the upper end of the vertical plate is fixedly connected to a support plate, the upper end of the support plate is connected to a connecting pipe, the connecting pipe is connected to the interior of the conveying cylinder, a second motor is provided at the upper end of the support plate, the output shaft of the second motor is fixedly connected to a rotating rod, the other end of the rotating rod passes through the conveying cylinder and is fixedly connected to a propeller, a large wheel is fixedly installed on the outer side of the rotating rod, the rotating rod is connected to a small wheel through a belt drive, the small wheel is fixedly connected to an incomplete gear, the incomplete gear is rotatably connected to the vertical plate, the incomplete gear is meshed with a first gear, the first gear passes through the vertical plate through a round rod and is fixedly connected to a screener.

[0012] Preferably, a second gear is meshed between the two groups of first gears, and the second gear is rotatably connected to the vertical plate.

[0013] Preferably, the upper end of the base is fixedly connected with a second spring, the upper end of the second spring is fixedly connected with a force-bearing plate, and the force-bearing plate is attached to the bottom end of the screener.

[0014] Preferably, the discharge measurement module comprises a discharge port fixedly mounted on the rear side of the screener, and a weighing sensor is arranged at the inner bottom end of the discharge port.

[0015] Preferably, a cylinder is fixedly connected to the bottom end of the base, a piston rod is arranged at the upper end of the cylinder, the piston rod passes through the base and is hinged with a push seat, and the push seat is located at the front of the bottom end of the screener.

[0016] Beneficial effects of the present invention: 1. The present invention is advantageous in controlling the tilting movement of the sampling box by designing a tilting moving module, making it convenient to collect sand and gravel samples with a larger feed port, preventing the shape of the feed port from affecting the transport of samples by the sampling box, and adjusting the distance from the sampling box to the conveyor belt, so as to facilitate the sampling box to collect sand and gravel samples at regular intervals.

[0017] 2. The present invention designs an automatic unloading module in conjunction with a tilting moving module, which is beneficial for controlling the flipping of the sampling box by utilizing the conveying process of the tilting moving module, facilitating automatic unloading of the sampling box, and preventing the sampling box from flipping upward when collecting samples through the setting of a baffle.

[0018] 3. The present invention designs a conveying and screening module, which is conducive to utilizing the power of conveying sampled sand and gravel into the screen to drive the screen to shake, thereby facilitating the screening of sampled sand and gravel, and obtaining sand and gravel with different pore sizes in layers, and resetting through the second spring, thereby further improving the screening effect of the screen.

[0019] 4. The present invention is advantageous for weighing and discharging the sand and gravel samples after screening by designing a discharge measurement module in conjunction with a conveying and screening module, and is convenient for calculating the efficiency of sand and gravel separation according to statistical data. In addition, the push seat hinged at the upper end of the piston rod can continuously adjust the angle of the fit screen, which is convenient for the screen to be stably stressed and improves the material discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is an overall three-dimensional schematic diagram of a sand and gravel separation efficiency monitoring instrument for a mixing station according to an embodiment of the present invention; Figure 2 A sand and gravel separation efficiency monitoring instrument for a mixing station according to an embodiment of the present invention Figure 1 Schematic diagram of the cross-section at AA in the middle; Figure 3 A sand and gravel separation efficiency monitoring instrument for a mixing station according to an embodiment of the present invention Figure 2 The enlarged schematic diagram of point B in the middle; Figure 4 It is a three-dimensional schematic diagram of an automatic sampling mechanism of a sand and gravel separation efficiency monitor for a mixing station according to an embodiment of the present invention; Figure 5 A partial explosion schematic diagram of a sand and gravel separation efficiency monitor for a mixing station according to an embodiment of the present invention; Figure 6It is a three-dimensional schematic diagram of a separation monitoring mechanism of a sand and gravel separation efficiency monitoring instrument for a mixing station according to an embodiment of the present invention; Figure 7 A sand and gravel separation efficiency monitoring instrument for a mixing station according to an embodiment of the present invention Figure 6 The enlarged schematic diagram at C in the middle; Figure 8 A sand and gravel separation efficiency monitoring instrument for a mixing station according to an embodiment of the present invention Figure 6 The enlarged schematic diagram at D in the middle; Fig. 9 It is a schematic diagram of an explosion of a discharge measurement module of a mixing station sand and gravel separation efficiency monitor according to an embodiment of the present invention.

[0022] The markings in the figure are: 1. analysis equipment; 2. base; 3. conveyor belt support; 4. conveyor belt; 5. bracket; 6. first motor; 7. reciprocating screw rod; 8. bracket plate; 9. movable plate; 10. connecting plate; 11. sampling box; 12. baffle plate; 13. rope belt; 14. push rod; 15. top plate; 16. first spring; 17. guide rod; 18. guide groove; 19. conveying cylinder; 20. feed port; 21. vertical plate; 22. support plate; 23. connecting pipe; 24. second motor; 25. rotating rod; 26. propeller; 27. large rotating wheel; 28. small rotating wheel; 29. ​​incomplete gear; 30. first gear; 31. screener; 32. second gear; 33. discharge port; 34. weighing sensor; 35. second spring; 36. force plate; 37. cylinder; 38. piston rod; 39. push seat. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] See also Figures 1 to 9The present invention provides a technical solution: a mixing station sand and gravel separation efficiency monitor, comprising an analysis device 1, the analysis device 1 is arranged at the upper end of a base 2, a conveyor belt support 3 is arranged on the side of the base 2, a conveyor belt support 3 is arranged inside the conveyor belt support 3 for conveying separated sand and gravel, an automatic sampling mechanism is arranged at the upper end of the conveyor belt support 3, a separation monitoring mechanism is arranged at the upper end of the base 2, the automatic sampling mechanism comprises a tilting moving module and an automatic unloading module, the tilting moving module is used to move the sampling box 11 after sampling to the top of the feed port 20, and the automatic unloading module uses the process of tilting the moving module to pour the sand and gravel sample in the sampling box 11 into the feed port 20; The separation monitoring mechanism includes a conveying and screening module and a discharging and measuring module. The conveying and screening module screens the sand and gravel samples poured from the feed port 20 for multiple times, and the discharging and measuring module is used to discharge the screened sand and gravel samples and weigh and measure the screened sand and gravel samples.

[0026] As an embodiment of the present invention, Figure 1 and Figure 2 as well as Figure 3 As shown, the tilting moving module includes a bracket 5 fixedly mounted on the upper end of the conveyor belt support 3, a first motor 6 is arranged on the upper end of the bracket 5, an output shaft of the first motor 6 is fixedly connected to one end of a reciprocating screw rod 7, the other end of the reciprocating screw rod 7 passes through the bracket 5 and is rotatably connected to a bracket plate 8, the bracket plate 8 is fixedly mounted inside the bracket 5, an outer side of the reciprocating screw rod 7 is threadedly connected to a movable plate 9, the bottom end of the movable plate 9 is fixedly connected to two groups of connecting plates 10, the lower side portions of the two groups of connecting plates 10 are hinged to the rear portions of both sides of a sampling box 11, both sides of the movable plate 9 are fixedly connected to guide rods 17, the guide rods 17 are clamped in guide grooves 18 and are slidably connected, the guide grooves 18 are provided on the side walls of the bracket 5, and when in use, the sampling box 1 The separated sand and gravel transported on the conveyor belt 4 are sampled at regular intervals, and then the first motor 6 is started, and the first motor 6 drives the reciprocating screw 7 to rotate. Then, because the reciprocating screw 7 is threadedly connected with the movable plate 9, the movable plate 9 can only move along the guide groove 18 through the guide rod 17 and the guide groove 18, so the reciprocating screw 7 drives the movable plate 9 to move obliquely. Finally, the movable plate 9 drives the sampling box 11 to move above the feed port 20 through the connecting plate 10, which is conducive to controlling the tilting movement of the sampling box 11, and conveniently collecting sand and gravel samples with the feed port 20 with a larger entrance, preventing the shape of the feed port 20 from affecting the transportation of the sample by the sampling box 11, and the distance from the sampling box 11 to the conveyor belt 4 can be adjusted, so that the sampling box 11 can collect sand and gravel samples at regular intervals.

[0027] As an embodiment of the present invention, Figure 2 and Figure 3 as well as Figure 4As shown, the automatic unloading module includes a rope 13 fixedly connected to the upper end of the sampling box 11, the rope 13 is fixedly connected to the bottom end of the push rod 14, the upper end of the push rod 14 passes through the movable plate 9 and is fixedly connected to the top plate 15, the outer side of the push rod 14 is sleeved with a first spring 16, the first spring 16 is arranged on the upper end of the movable plate 9, the upper end of the sampling box 11 is attached with a baffle 12, the baffle 12 is fixed on the connecting plate 10, when the movable plate 9 tilts upward to transport the sampling box 11, the upper end of the top plate 15 contacts the bracket 5, so that the push rod 14 at the bottom end of the top plate 15 overcomes the elastic force of the first spring 16 and moves downward, and then the push rod 14 moves the sampling box 11 through the rope 13. The restriction of the sampling box 11 is released, and finally, because the center of gravity of the sampling box 11 is forward, the sampling box 11 is restricted by the baffle 12, so that the sampling box 11 rotates forward around the hinge of the connecting plate 10, thereby pouring the collected sand and gravel samples in the sampling box 11 into the feed port 20. Similarly, when the sampling box 11 is conveyed downwardly, the restoring force of the first spring 16 drives the sampling box 11 to restore its position through the rope 13, the push rod 14 and the top plate 15, which is beneficial to control the flipping of the sampling box 11 by utilizing the conveying process of the inclined moving module, facilitates the automatic unloading of the sampling box 11, and prevents the sampling box 11 from flipping upward when collecting samples through the setting of the baffle 12.

[0028] As an embodiment of the present invention, Figure 5 and Figure 6 as well as Figure 7As shown, the conveying and screening module includes a conveying cylinder 19 mounted on the upper end of the conveyor belt support 3, a feed port 20 is arranged at the upper end of the conveying cylinder 19, two sets of vertical plates 21 are fixedly connected to the upper end of the base 2, a support plate 22 is fixedly connected to the upper end of the vertical plate 21, a connecting pipe 23 is connected to the upper end of the support plate 22, the connecting pipe 23 is connected to the interior of the conveying cylinder 19, a second motor 24 is arranged at the upper end of the support plate 22, a rotating rod 25 is fixedly connected to the output shaft of the second motor 24, the other end of the rotating rod 25 passes through the conveying cylinder 19 and is fixedly connected to a propeller 26, A large rotating wheel 27 is fixedly installed on the outer side of the rotating rod 25. The rotating rod 25 is connected to a small rotating wheel 28 through a belt drive. The small rotating wheel 28 is fixedly connected to an incomplete gear 29. The incomplete gear 29 is rotatably connected to the vertical plate 21. The incomplete gear 29 is meshed with a first gear 30. The first gear 30 penetrates the vertical plate 21 through a round rod and is fixedly connected to a filter 31. A second gear 32 is meshed between the two groups of first gears 30. The second gear 32 is rotatably connected to the vertical plate 21. The upper end of the base 2 is fixedly connected to a second spring 35. The second spring 35 The upper end of the force plate 36 is fixedly connected, and the force plate 36 is attached to the bottom of the screen 31. The analysis device 1 starts the second motor 24, and the second motor 24 drives the propeller 26 to rotate through the rotating rod 25. The propeller 26 transports the sampled sand and gravel entering the conveying cylinder 19 from the feed inlet 20 to the connecting pipe 23, and enters the screen 31 from the connecting pipe 23. Then, the rotating rod 25 transports the sampled sand and gravel while driving the large rotating wheel 27 to rotate. Because the large rotating wheel 27 is connected to the small rotating wheel 28 through the transmission, the incomplete gear 29 meshes with the first gear 30, and the first gear The wheel 30 drives the multiple groups of screeners 31 to swing periodically through the second gear 32. Finally, the restoring force of the second spring 35 resets the swinging screener 31 through the force-bearing plate 36, thereby improving the screening effect. The sampled sand and gravel are stratified through the mesh screens of different apertures of the screener 31, which is beneficial to utilize the power of transporting the sampled sand and gravel into the screener 31 to drive the screener 31 to shake, so as to facilitate the screening of the sampled sand and gravel, and obtain sand and gravel of different pore particle sizes by stratification, and reset by the second spring 35, thereby further improving the screening effect of the screener 31.

[0029] As an embodiment of the present invention, Figure 6 and Figure 8 as well as Fig. 9As shown, the discharge measurement module includes a discharge port 33 fixedly installed on the rear side of the screener 31, a weighing sensor 34 is arranged at the inner bottom end of the discharge port 33, a cylinder 37 is fixedly connected to the bottom end of the base 2, a piston rod 38 is arranged at the upper end of the cylinder 37, the piston rod 38 passes through the base 2 and is hinged with a push seat 39, and the push seat 39 is located at the bottom front of the screener 31. The analysis device 1 starts the cylinder 37, and the cylinder 37 drives the push seat 39 to contact the bottom end of the screener 31 through the piston rod 38, and then the push seat 39 rises to drive the sand and gravel sample in the screener 31 to the conveyor belt The sand and gravel samples are gathered at the support 3, and then discharged through the weighing sensor 34 on the discharge port 33. Finally, the weighing sensor 34 records the amount of sand and gravel discharged from the screeners 31 with different apertures and transmits it to the analysis device 1. The analysis device 1 obtains the efficiency of sand and gravel separation based on the data statistical chart, which is conducive to weighing and discharging the screened sand and gravel samples, and is convenient for calculating the efficiency of sand and gravel separation according to statistical data. The pushing seat 39 hinged on the upper end of the piston rod 38 can continuously adjust the angle of the screener 31 to facilitate the stable force on the screener 31 and improve the material discharge effect.

[0030] Working principle: When in use, the sampling box 11 samples the separated sand and gravel transported on the conveyor belt 4 at a fixed time, and then the first motor 6 is started, and the first motor 6 drives the reciprocating screw 7 to rotate. Then, because the reciprocating screw 7 is threadedly connected to the movable plate 9, the movable plate 9 can only move along the guide groove 18 through the guide rod 17 and the guide groove 18, so the reciprocating screw 7 drives the movable plate 9 to move obliquely, and finally the movable plate 9 drives the sampling box 11 to move above the feed port 20 through the connecting plate 10; When the movable plate 9 is tilted upward to convey the sampling box 11, the upper end of the top plate 15 contacts the bracket 5, so that the push rod 14 at the bottom end of the top plate 15 overcomes the elastic force of the first spring 16 and moves downward, and then the push rod 14 releases the restriction on the sampling box 11 through the rope 13. Finally, because the center of gravity of the sampling box 11 is forward, the sampling box 11 is restricted by the baffle 12, so that the sampling box 11 rotates forward around the hinge of the connecting plate 10, so that the sand and gravel samples collected in the sampling box 11 are poured into the feed port 20. Similarly, when the sampling box 11 is tilted downward to convey the sampling box 11, the restoring force of the first spring 16 drives the sampling box 11 to restore its position through the rope 13, the push rod 14 and the top plate 15. The analysis device 1 starts the second motor 24, and the second motor 24 drives the propeller 26 to rotate through the rotating rod 25. The propeller 26 transports the sampled sand and gravel that enters the conveying cylinder 19 from the feed port 20 to the connecting pipe 23, and enters the screen 31 from the connecting pipe 23. Then, the rotating rod 25 drives the large rotating wheel 27 to rotate while transporting the sampled sand and gravel. Because the large rotating wheel 27 is connected to the small rotating wheel 28 through transmission, the incomplete gear 29 meshes with the first gear 30, and the first gear 30 drives the multiple groups of screens 31 to swing periodically through the second gear 32. Finally, the restoring force of the second spring 35 resets the screen 31 after swinging through the force plate 36, thereby improving the screening effect, so that the sampled sand and gravel pass through the screens of different apertures of the screen 31 for stratification; The analysis device 1 starts the cylinder 37, and the cylinder 37 drives the push seat 39 to contact the bottom end of the screener 31 through the piston rod 38. Then the push seat 39 rises and drives the sand and gravel samples in the screener 31 to gather at the conveyor belt support 3. Then the sand and gravel samples are discharged through the weighing sensor 34 on the discharge port 33. Finally, the weighing sensor 34 records the amount of sand and gravel discharged from the screeners 31 with different apertures and transmits it to the analysis device 1. The analysis device 1 obtains the efficiency of sand and gravel separation based on the data statistical chart.

[0031] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of the present invention as above, which are not provided in detail for the sake of simplicity.

[0032] The present invention is intended to cover all such substitutions, modifications and changes that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mixing station sand and gravel separation efficiency monitor, comprising an analysis device (1), the analysis device (1) being arranged at the upper end of a base (2), a conveyor belt support (3) being arranged on the side of the base (2), a conveyor belt (4) for conveying separated sand and gravel being arranged in the conveyor belt support (3), an automatic sampling mechanism being arranged at the upper end of the conveyor belt support (3), and a separation monitoring mechanism being arranged at the upper end of the base (2), characterized in that: The automatic sampling mechanism comprises a tilting moving module and an automatic unloading module, wherein the tilting moving module is used to move the sampling box (11) to the top of the feed port (20) after sampling, and the automatic unloading module uses the process of tilting the moving module to pour the sand and gravel sample in the sampling box (11) into the feed port (20); The separation monitoring mechanism comprises a conveying and screening module and a discharge measuring module. The conveying and screening module screens the sand and gravel samples poured from the feed port (20) multiple times, and the discharge measuring module is used to discharge the screened sand and gravel samples and weigh and measure the screened sand and gravel samples.

2. The sand and gravel separation efficiency monitor for a mixing station according to claim 1, characterized in that: The tilting moving module comprises a bracket (5) fixedly mounted on the upper end of a conveyor belt support (3); a first motor (6) is arranged on the upper end of the bracket (5); an output shaft of the first motor (6) is fixedly connected to one end of a reciprocating screw (7); the other end of the reciprocating screw (7) passes through the bracket (5) and is rotatably connected to a bracket plate (8); the bracket plate (8) is fixedly mounted inside the bracket (5); an outer side of the reciprocating screw (7) is threadedly connected to a movable plate (9); the bottom end of the movable plate (9) is fixedly connected to two groups of connecting plates (10); the lower side portions of the two groups of connecting plates (10) are hinged to the rear portions of both sides of the sampling box (11).

3. The sand and gravel separation efficiency monitor for a mixing station according to claim 2, characterized in that: Both sides of the movable plate (9) are fixedly connected with guide rods (17), the guide rods (17) are clamped in guide grooves (18) and slidably connected, and the guide grooves (18) are formed on the side walls of the bracket (5).

4. The sand and gravel separation efficiency monitor for a mixing station according to claim 2, characterized in that: The automatic unloading module comprises a rope (13) fixedly connected to the upper end of the sampling box (11), the rope (13) fixedly connected to the bottom end of a push rod (14), the upper end of the push rod (14) passes through the movable plate (9) and is fixedly connected to a top plate (15), and a first spring (16) is sleeved on the outer side of the push rod (14), and the first spring (16) is arranged on the upper end of the movable plate (9).

5. The sand and gravel separation efficiency monitor for a mixing station according to claim 4, characterized in that: A baffle (12) is attached to the upper end of the sampling box (11), and the baffle (12) is fixed on the connecting plate (10).

6. The sand and gravel separation efficiency monitor for a mixing station according to claim 1, characterized in that: The conveying and screening module comprises a conveying cylinder (19) mounted on the upper end of a conveyor belt support (3), a feed port (20) being arranged at the upper end of the conveying cylinder (19), two sets of vertical plates (21) being fixedly connected to the upper end of the base (2), a support plate (22) being fixedly connected to the upper end of the vertical plate (21), a connecting pipe (23) being connected to the upper end of the support plate (22), the connecting pipe (23) being connected to the interior of the conveying cylinder (19), a second motor (24) being arranged at the upper end of the support plate (22), and a rotating rod (25) being fixedly connected to the output shaft of the second motor (24). ), the other end of the rotating rod (25) passes through the conveying cylinder (19) and is fixedly connected to a propeller (26), a large rotating wheel (27) is fixedly installed on the outer side of the rotating rod (25), the rotating rod (25) is connected to a small rotating wheel (28) through a belt drive, the small rotating wheel (28) is fixedly connected to an incomplete gear (29), the incomplete gear (29) is rotatably connected to the vertical plate (21), the incomplete gear (29) is meshed with a first gear (30), the first gear (30) passes through the vertical plate (21) through a round rod and is fixedly connected to a screener (31).

7. The sand and gravel separation efficiency monitor for a mixing station according to claim 6, characterized in that: A second gear (32) is meshed between the two groups of the first gears (30), and the second gear (32) is rotatably connected to the vertical plate (21).

8. The sand and gravel separation efficiency monitor for a mixing station according to claim 6, characterized in that: The upper end of the base (2) is fixedly connected to a second spring (35), the upper end of the second spring (35) is fixedly connected to a force-bearing plate (36), and the force-bearing plate (36) is attached to the bottom end of the filter (31).

9. The sand and gravel separation efficiency monitor for a mixing station according to claim 6, characterized in that: The discharge measurement module comprises a discharge port (33) fixedly mounted on the rear side of the screener (31), and a weighing sensor (34) is arranged at the inner bottom end of the discharge port (33).

10. The sand and gravel separation efficiency monitor for a mixing station according to claim 6, characterized in that: The bottom end of the base (2) is fixedly connected to a cylinder (37), the upper end of the cylinder (37) is provided with a piston rod (38), the piston rod (38) passes through the base (2) and is hinged to a push seat (39), and the push seat (39) is located at the front of the bottom end of the screener (31).

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