Sample preparation division machine

Abstract

The invention relates to the technical field of sample preparation division, in particular to a sample preparation division machine which comprises an operation table, a support, a feeding hopper, a vibrating feeder, a synchronous moving mechanism, a feeding mechanism and a receiving mechanism, the synchronous moving mechanism comprises sliding plates, racks are fixed to the side faces of the two sliding plates, and the two racks are meshed with a gear; the feeding mechanism comprises a distributing slideway, one end of the distributing slideway is connected with a vibrating feeder, and the other end of the distributing slideway is rotationally connected with the sliding plate. The material receiving mechanism comprises a strip-shaped material receiving plate and a material receiving bin, and a through hole is formed in the strip-shaped material receiving plate. When a large sample needs to be uniformly divided into a plurality of small samples, the synchronous moving mechanism drives the strip-shaped material receiving plate to move back and forth, so that the discharge port of the material distributing slide way can be transferred from one end of the strip-shaped material receiving plate to the other end of the strip-shaped material receiving plate and then returns, the samples are put into the material receiving bin from the through hole, and small-amount and multi-time blanking is realized; by changing the reciprocating distance of the strip-shaped material receiving plate, the large sample can be equally divided into different numbers of small samples.

Description

Technical Field

[0001] The invention relates to the technical field of sample making and shrinking, and in particular to a sample making and shrinking machine. Background Art

[0002] Sample reduction refers to dividing the prepared large sample into several samples evenly. Sample reduction is of great significance to ensure the accuracy and representativeness of the test results of mineral products. GB / T 2007.2-1987 General Rules for Sampling and Sample Preparation of Bulk Mineral Products Manual Sample Preparation Method stipulates that sample reduction can be done by mechanical or manual methods. The manual reduction method has the disadvantages of large sampling errors, poor representativeness and cumbersome reduction procedures. The most commonly used mechanical reduction is the rotary reducer. The most commonly used rotary reducers on the market can evenly reduce the sample to a fixed number of parts.

[0003] The patent document publication number is CN221619585U, which is a reduction machine, including a box body, a feed hopper is fixedly installed on the upper surface of the box body, and a crushing mechanism is arranged on the top of the box body, a screening mechanism is arranged on the lower side of the crushing mechanism, and a connecting mechanism is arranged between the screening mechanism and the crushing mechanism, and a feeding chute is fixedly installed on the surface of the box body. Through the use of the screening mechanism, the connecting shaft drives the cam on the surface to rotate, and the protrusion of the cam can hit one side of the rotating frame, so that one side of the rotating frame moves downward and the spring is deformed. When the protrusion of the cam rotates to the upper side, the spring will push the rotating frame upward through its own elastic force to reset the rotating frame. The protrusion of the cam hits back and forth, and cooperates with the spring, so that the rotating frame can vibrate to screen the material. However, this patent still has some shortcomings: the number of reduction sets in the prior art is limited by the structure of the instrument, and can often only be reduced to a fixed number of sets. If a different number of sets is required, it needs to be customized. However, in the inspection process of imported mineral products, especially high-value minerals such as copper concentrate and gold concentrate, due to the large number of interested parties, a large number of sample sets are often required, and the number of sets often changes, ranging from 6 to 8 sets to 12 to 16 sets, or even 20 sets of samples. This brings great inconvenience to the laboratory in the sample preparation process and greatly reduces the sample preparation efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that a large sample is difficult to be reduced into a plurality of sample sets, the present invention provides a sample preparation and reduction machine to solve the above problem. The technical solution adopted by the present invention to solve its technical problems is: a sample preparation and reduction machine, including an operating table, a bracket, a feeding funnel and a vibrating feeder, wherein the bracket is vertically fixed at one end of the operating table, the feeding funnel is fixed on the bracket, the vibrating feeder is fixed on the operating table and is located below the feeding funnel, and also includes a synchronous movement mechanism, a feeding mechanism, and a material receiving mechanism. The synchronous movement mechanism includes a servo motor, a gear and two sliding plates, the sides of the two sliding plates are fixed with racks, and the two racks are respectively meshed with the gear from both sides of the gear, and the gear is coaxially fixed with the output shaft of the servo motor, and when the gear rotates, it can pass The two racks drive the two sliding plates to move synchronously in opposite directions, and the servo motor is installed on the operating table; the feeding mechanism includes a material dividing chute, one end of the material dividing chute is connected to the vibrating feeder, and the other end of the material dividing chute is rotatably connected to the sliding plate close to the vibrating feeder side, the feed port of the material dividing chute is located directly below the feeding funnel, and the discharge port of the material dividing chute is located directly above the material receiving mechanism; the material receiving mechanism includes a strip material receiving plate and a material receiving bin, the material receiving bin is fixed on the sliding plate away from the vibrating feeder side, the strip material receiving plate is fixed on the top of the material receiving bin, and a plurality of through holes connected to the material receiving bin are opened on the strip material receiving plate. Preferably, the synchronous movement mechanism also includes a fixed table, a slide rail and an end plate. The fixed table is fixedly mounted on the upper surface of the operating table. The slide rail is fixed on the fixed table and is located on both sides of the gear. The two sliding plates are slidably connected to the two slide rails through sliders respectively, and the end plate is fixed at the end of the sliding plate.

[0005] Preferably, the feeding mechanism also includes a first rotating support rod, a first support, a second rotating support rod and a second support, the first rotating support rod is fixed on the vibrating feeder, the first support is fixed to the bottom of the feed port of the material distribution chute, the top of the first rotating support rod is rotatably connected to the first support, the second rotating support rod is fixedly connected to the sliding plate close to the side of the vibrating feeder, the second support is fixed to the bottom of the middle section of the material distribution chute, and the top of the second rotating support rod is rotatably connected to the second support.

[0006] Preferably, the material dividing slide includes a material receiving part and an extension part, the extension part is sleeved on the lower end of the material receiving part, the material receiving part is slidably connected to the extension part, the first support is fixedly connected to the material receiving part, and the second support is fixedly connected to the extension part.

[0007] Preferably, the material receiving mechanism further comprises a plurality of material receiving barrels arranged in the material receiving bin, and the material receiving barrels are arranged in a one-to-one correspondence with the through holes.

[0008] Preferably, a horizontal support plate is provided in the material receiving bin, and guide rods are slidably connected to both ends of the horizontal support plate. The guide rods are vertically fixed in the material receiving bin, and a compression spring is sleeved on the guide rod. One end of the compression spring abuts against the bottom of the horizontal support plate, and the other end of the compression spring abuts against the bottom of the material receiving bin.

[0009] Preferably, the inner wall diameter of the through hole gradually decreases from top to bottom, the minimum diameter of the through hole is smaller than the inner diameter of the receiving barrel, and a sealing gasket is fixed to the bottom of the strip receiving plate, which is used to seal the gap between the strip receiving plate and the receiving barrel.

[0010] The beneficial effect of the present invention is that a synchronous moving mechanism and a strip receiving plate are provided. When a large sample needs to be evenly reduced into multiple small samples, the synchronous moving mechanism drives the strip receiving plate to move back and forth, so that the discharge port of the dividing slide can be transferred from one end of the strip receiving plate to the other end and then return, and the sample is put into the receiving bin through the through hole, realizing multiple small amounts of material discharge, which is beneficial to the equal distribution of samples. By changing the distance of the reciprocating movement of the strip receiving plate, the large sample can be evenly divided into different numbers of small samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0012] Figure 1 It is a structural schematic diagram of a preferred embodiment of a sample making and reducing machine of the present invention; Figure 2 It is a structural schematic diagram of a strip receiving plate of a sample making and reducing machine of the present invention; Figure 3 It is a structural schematic diagram of a gear of a sample making and reducing machine of the present invention; Figure 4 It is a structural schematic diagram of a sliding plate of a sample making and reducing machine of the present invention; Figure 5 It is a structural schematic diagram of a horizontal support plate of a sample making and reducing machine of the present invention; Figure 6 It is a structural schematic diagram of an extended portion of a sample making and reducing machine of the present invention.

[0013] Figure numerals: 1. operating table; 2. bracket; 3. feeding funnel; 4. vibrating feeder; 5. synchronous moving mechanism; 6. feeding mechanism; 7. material receiving mechanism; 8. servo motor; 9. gear; 10. sliding plate; 11. rack; 12. material dividing slide; 13. strip receiving plate; 14. material receiving bin; 15. through hole; 16. fixed table; 17. slide rail; 18. end plate; 19. first rotating support rod; 20. first support; 21. second rotating support rod; 22. second support; 23. material receiving part; 24. extension part; 25. material receiving barrel; 26. horizontal support plate; 27. guide rod; 28. compression spring. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0016] like Figures 1 to 6 As shown, the present invention provides an embodiment of a sample preparation and reduction machine, including an operating table 1, a bracket 2, a feeding funnel 3 and a vibrating feeder 4, wherein the bracket 2 is vertically fixed at one end of the operating table 1, the feeding funnel 3 is fixed on the bracket 2, the vibrating feeder 4 is fixed on the operating table 1 and is located below the feeding funnel 3, and further includes a synchronous moving mechanism 5, a feeding mechanism 6, and a material receiving mechanism 7, wherein the synchronous moving mechanism 5 includes a servo motor 8, a gear 9 and two sliding plates 10, the sides of the two sliding plates 10 are both fixed with racks 11, the two racks 11 are respectively meshed with the gear 9 from both sides of the gear 9, and the gear 9 is coaxially fixed with the output shaft of the servo motor 8, When the gear 9 rotates, the two sliding plates 10 can be driven to move synchronously in opposite directions through the two racks 11. The servo motor 8 is installed on the operating table 1. The synchronous movement mechanism 5 also includes a fixed table 16, a slide rail 17 and an end plate 18. The fixed table 16 is fixedly installed on the upper surface of the operating table 1. The slide rail 17 is fixed on the fixed table 16 and is located on both sides of the gear 9. The two sliding plates 10 are slidably connected to the two slide rails 17 through sliders respectively. The end plate 18 is fixed to the end of the sliding plate 10, and the two ends of the sliding plate 10 are fixed. While improving the structural strength of the sliding plate 10 itself, the space below the sliding plate 10 can also be covered and dustproofed.

[0017] The feeding mechanism 6 includes a dividing chute 12, one end of which is connected to the vibrating feeder 4, and the other end of the dividing chute 12 is rotatably connected to a sliding plate 10 close to the side of the vibrating feeder 4. The feed port of the dividing chute 12 is located directly below the feeding funnel 3, and the discharge port of the dividing chute 12 is located directly above the material receiving mechanism 7.

[0018] The feeding mechanism 6 also includes a first rotating support rod 19, a first support 20, a second rotating support rod 21 and a second support 22. The first rotating support rod 19 is fixed on the vibrating feeder 4, the first support 20 is fixed at the bottom of the feed port of the material distribution chute 12, the top of the first rotating support rod 19 is rotatably connected to the first support 20, the second rotating support rod 21 is fixedly connected to the sliding plate 10 close to the side of the vibrating feeder 4, the second support 22 is fixed at the bottom of the middle section of the material distribution chute 12, and the top of the second rotating support rod 21 is rotatably connected to the second support 22.

[0019] The material distribution slide 12 includes a material receiving portion 23 and an extension portion 24 . The extension portion 24 is sleeved on the lower end of the material receiving portion 23 . The material receiving portion 23 and the extension portion 24 are slidably connected. The first support 20 is fixedly connected to the material receiving portion 23 , and the second support 22 is fixedly connected to the extension portion 24 .

[0020] The working principle of the feeding mechanism 6 is: first, the prepared large sample is placed in the feeding funnel 3, and the sample falls from the bottom of the feeding funnel 3 to the receiving part 23 of the material distribution chute 12, and then the vibrating feeder 4 drives the material distribution chute 12 to vibrate as a whole, and the sample in the receiving part 23 is transported to the extension part 24, and finally falls into the receiving mechanism 7 from the extension part 24 to complete the transportation of the sample. In addition, when the sliding plate 10 moves, the second rotating rod connected to the sliding plate 10 will move accordingly, thereby extending the distance between the first rotating rod and the second rotating rod. At this time, the extension part 24 is driven and slides forward together, and at the same time, the receiving part 23 rotates with the first rotating rod as the axis, so that the discharge port of the material distribution chute 12 can always be maintained above the strip receiving plate 13 to prevent the sample from spilling out of the strip receiving plate 13.

[0021] The material receiving mechanism 7 includes a strip material receiving plate 13 and a material receiving bin 14. The material receiving bin 14 is fixed on the sliding plate 10 on the side away from the vibrating feeder 4. The strip material receiving plate 13 is fixed on the top of the material receiving bin 14. A plurality of through holes 15 connecting to the material receiving bin 14 are opened on the strip material receiving plate 13. The inner wall diameter of the through hole 15 gradually decreases from top to bottom. The minimum diameter of the through hole 15 is smaller than the inner diameter of the material receiving barrel 25. A sealing gasket is also fixed to the bottom of the strip material receiving plate 13. The sealing gasket is used to seal the gap between the strip material receiving plate 13 and the material receiving barrel 25. At this time, the strip material receiving plate 13 is tightly connected to the top of the material receiving barrel 25, and the barrel mouth of the connecting barrel 25 is raised to effectively prevent the sample from spilling out of the barrel mouth of the material receiving barrel 25 when the material receiving barrel 25 moves. The working principle of the material receiving mechanism 7 is: when it is necessary to evenly reduce a large sample into multiple small samples, start the servo motor 8 and drive the two sliding plates 10 to move in the opposite direction synchronously through the rack 11, and then use the control unit in the operating table 1 to make the servo motor 8 rotate in the opposite direction after rotating a certain number of circles, so that the servo motor 8 can drive the two sliding plates 10 to reciprocate in a straight line direction. When the two sliding plates 10 reciprocate, the sliding plate 10 close to the side of the vibrating feeder 4 drives the material distribution slide 12 to move forward, and the sliding plate 10 away from the side of the vibrating feeder 4 drives the strip material receiving plate 13 and the material receiving bin 14 to move in the opposite direction, so that the discharge port of the material distribution slide 12 can be The sample is then put into the receiving bin 14 from the through hole 15, and then the servo motor 8 rotates in the opposite direction, so that the discharge port of the material distribution slide 12 passes through the top of the strip material receiving plate 13 from the opposite direction again, and the sample is put into the receiving bin 14 from the through hole 15, and the above steps are repeated, so as to increase the feeding frequency of a single receiving bin 14, realize multiple small amount of material discharge, and facilitate sample even distribution. On the other hand, the discharge port of the material distribution slide 12 moves synchronously with the strip material receiving plate 13 in the opposite direction, so that the strip material receiving plate 13 only needs to move a small distance when receiving the material, which reduces the vibration generated when the receiving bin 14 moves, and prevents the sample from spilling out. When it is necessary to evenly reduce a large sample into different numbers of small samples, the moving distance of the discharge port of the strip receiving plate 13 and the dividing chute 12 can be adjusted by changing the number of rotations of the servo motor 8. For example, by making the discharge port of the dividing chute 12 move back and forth between the three through holes 15 on the strip receiving plate 13, the large sample in the feeding funnel 3 can be evenly reduced into three small samples.

[0022] It should be noted that in some other embodiments, the number of through holes 15 on the strip receiving plate 13 includes but is not limited to eight. According to actual needs, any number of through holes 15 (not shown in the figure) can be opened on the strip receiving plate 13, so that the discharge port of the material distribution chute 12 can reciprocate between eight or more through holes 15 on the strip receiving plate 13, so that the large sample in the feeding funnel 3 can be evenly reduced into eight or more small samples to meet the sample reduction needs in actual use.

[0023] The material receiving mechanism 7 further includes a plurality of material receiving barrels 25 disposed in the material receiving bin 14 . The material receiving barrels 25 are disposed in one-to-one correspondence with the through holes 15 . After the samples enter the material receiving bin 14 through the through holes 15 , they are contained in the material receiving barrels 25 .

[0024] A horizontal support plate 26 is provided in the material receiving bin 14, and guide rods 27 are slidably connected to both ends of the horizontal support plate 26. The guide rods 27 are vertically fixed in the material receiving bin 14, and a clamping spring 28 is sleeved on the guide rod 27. One end of the clamping spring 28 abuts against the bottom of the horizontal support plate 26, and the other end of the clamping spring 28 abuts against the bottom of the material receiving bin 14.

[0025] When the volume of the large sample is large, the receiving barrel 25 in the receiving bin 14 can be replaced with a large-capacity receiving barrel 25. First, the original receiving barrel 25 is taken out, and then the large-capacity receiving barrel 25 is pressed between the horizontal support plate 26 and the top of the receiving bin 14. The horizontal support plate 26 can press the receiving barrels 25 of different capacities against the sealing gasket at the bottom of the strip receiving plate 13 to prevent the receiving bin 14 from moving and causing the receiving barrel 25 to shake.

Claims

1. A sample preparation and reduction machine, comprising an operating table (1), a bracket (2), a feeding hopper (3) and a vibrating feeder (4), wherein the bracket (2) is vertically fixed to one end of the operating table (1), the feeding hopper (3) is fixed to the bracket (2), and the vibrating feeder (4) is fixed to the operating table (1) and is located below the feeding hopper (3), characterized in that: It also includes a synchronous moving mechanism (5), a feeding mechanism (6), and a receiving mechanism (7), wherein the synchronous moving mechanism (5) includes a servo motor (8), a gear (9), and two sliding plates (10), the sides of the two sliding plates (10) are fixed with racks (11), the two racks (11) are respectively meshed with the gear (9) from both sides of the gear (9), the gear (9) is coaxially fixed with the output shaft of the servo motor (8), and when the gear (9) rotates, the two sliding plates (10) can be driven to move synchronously in opposite directions through the two racks (11), and the servo motor (8) is installed on the operating table (1); The feeding mechanism (6) comprises a material distribution chute (12), one end of the material distribution chute (12) is connected to the vibrating feeder (4), and the other end of the material distribution chute (12) is rotatably connected to a sliding plate (10) close to one side of the vibrating feeder (4), the feed port of the material distribution chute (12) is located directly below the feeding hopper (3), and the discharge port of the material distribution chute (12) is located directly above the material receiving mechanism (7); The material receiving mechanism (7) comprises a strip material receiving plate (13) and a material receiving bin (14); the material receiving bin (14) is fixed on a sliding plate (10) at a side away from the vibrating feeder (4); the strip material receiving plate (13) is fixed on the top of the material receiving bin (14); and the strip material receiving plate (13) is provided with a plurality of through holes (15) connected to the material receiving bin (14).

2. A sample reduction machine as claimed in claim 1, characterized in that: The synchronous movement mechanism (5) further comprises a fixed platform (16), a slide rail (17) and an end plate (18); the fixed platform (16) is fixedly mounted on the upper surface of the operating platform (1); the slide rail (17) is fixed on the fixed platform (16) and is located on both sides of the gear (9); the two sliding plates (10) are slidably connected to the two slide rails (17) via sliders, respectively; and the end plate (18) is fixed to the end of the sliding plate (10).

3. A sample reduction machine as claimed in claim 1, characterized in that: The feeding mechanism (6) further comprises a first rotating support rod (19), a first support (20), a second rotating support rod (21) and a second support (22), wherein the first rotating support rod (19) is fixed on the vibrating feeder (4), the first support (20) is fixed to the bottom of the feed port of the material distribution chute (12), the top of the first rotating support rod (19) is rotatably connected to the first support (20), the second rotating support rod (21) is fixedly connected to the sliding plate (10) on the side close to the vibrating feeder (4), the second support (22) is fixed to the bottom of the middle section of the material distribution chute (12), and the top of the second rotating support rod (21) is rotatably connected to the second support (22).

4. A sample reduction machine as claimed in claim 3, characterized in that: The material distribution slide (12) comprises a material receiving portion (23) and an extension portion (24), wherein the extension portion (24) is sleeved on the lower end of the material receiving portion (23), the material receiving portion (23) and the extension portion (24) are slidably connected, the first support (20) is fixedly connected to the material receiving portion (23), and the second support (22) is fixedly connected to the extension portion (24).

5. A sample reduction machine as claimed in claim 1, characterized in that: The material receiving mechanism (7) further comprises a plurality of material receiving barrels (25) arranged in the material receiving bin (14), wherein the material receiving barrels (25) are arranged in a one-to-one correspondence with the through holes (15).

6. A sample reduction machine as claimed in claim 5, characterized in that: A horizontal support plate (26) is arranged in the material receiving bin (14), and guide rods (27) are slidably connected to both ends of the horizontal support plate (26). The guide rods (27) are vertically fixed in the material receiving bin (14), and a compression spring (28) is sleeved on the guide rod (27). One end of the compression spring (28) abuts against the bottom of the horizontal support plate (26), and the other end of the compression spring (28) abuts against the bottom of the material receiving bin (14).

7. A sample reduction machine as claimed in claim 6, characterized in that: The inner wall diameter of the through hole (15) gradually decreases from top to bottom, and the minimum diameter of the through hole (15) is smaller than the inner diameter of the material receiving barrel (25). A sealing gasket is also fixed to the bottom of the strip material receiving plate (13), and the sealing gasket is used to seal the gap between the strip material receiving plate (13) and the material receiving barrel (25).

Images