Sand washer for mining machinery

Abstract

The invention discloses a sand washer for mining machinery, and belongs to the technical field of sand washers for mining machinery. A sand washing machine for mining machinery comprises a machine frame rotationally provided with a roller, a feeding hopper, a discharging hopper and a filtering water tank are fixedly installed on the machine frame, a washing pipe is arranged in the roller, a driving mechanism used for driving the roller to rotate is arranged on the machine frame, the sand washing machine further comprises a rotating rod arranged on the machine frame, and one end of the rotating rod is fixedly connected with a protruding block; according to the sand washer for the mining machinery, a rotating rod drives a convex block to continuously rotate, so that a protruding part of the convex block periodically abuts against an extrusion part, a rotating plate is driven to rotate up and down, and then a hemispherical block is driven to repeatedly knock the bottom of a discharging hopper; according to the design, friction force between fine sand and the bottom wall of the discharging hopper and surface tension of water are destroyed through vibration, so that adhered small-particle gravel is promoted to fall off, the sliding resistance of the gravel is reduced, the discharging efficiency is improved, conveying interruption caused by blockage is effectively avoided, and the working efficiency in mining machinery is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery sand washing machines, in particular to a sand washing machine for mining machinery. Background Art

[0002] Sand washing machine is a key equipment in the fields of mining, building aggregate processing, etc. It is mainly used for cleaning, grading and dehydrating sand and gravel materials, removing mud, stone powder, impurities, etc., and improving the purity and quality of sand and gravel. In the process of mining and ore processing, drum sand washing machine is a key mining machinery equipment. It realizes the cleaning, grading and dehydration of sand and gravel through drum rotation, material friction and water flushing. It is especially suitable for processing ore raw materials with high mud content and large particle size.

[0003] After searching, the Chinese patent authorization number CN113333147B discloses a stable sand washing machine for mining machinery. The above patent has the following shortcomings: At present, after the traditional drum sand washing machine discharges the material, the sand and gravel slide directly into the discharge hopper and are transported to the next process through a belt conveyor or other conveying equipment. However, since the surface of the washed sand and gravel is adhered to moisture, and the sand and gravel mined in the mine often contains a large number of particles with smaller particle sizes (such as stone powder and fine sand), when the sand and gravel slide on the surface of the discharge hopper, under the combined action of gravity, friction and the surface tension of water, the sand and gravel with smaller particle sizes are very easy to adhere to the inner wall of the discharge hopper, resulting in a significant reduction in the sliding speed of the sand and gravel, and even accumulation and blockage. Frequent shutdowns for cleaning are required, which increases labor maintenance costs and equipment losses. Moreover, the existing discharge hoppers mostly adopt a single inclined plane design, lack of targeted optimization of the sliding characteristics of sand and gravel, and cannot effectively overcome the adhesion resistance caused by moisture and fine sand. For mining production lines with large processing volumes, the production interruptions and efficiency losses caused by this problem are particularly prominent, seriously restricting the continuity of mining and capacity improvement. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the discharge hopper of the traditional drum sand washing machine is prone to adhesion and clogging, which affects the production capacity, and to propose a sand washing machine for mining machinery.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A sand washing machine for mining machinery comprises: a frame on which a drum is rotatably mounted, a feed hopper, a discharge hopper and a filter water trough are fixedly mounted on the frame, a flushing pipe is provided in the drum, a driving mechanism for driving the drum to rotate is provided on the frame, and further comprises: a rotating rod provided on the frame, one end of the rotating rod is fixedly connected to a protrusion, both sides of the filter water trough are provided with extrusion pieces that abut against the protrusion, both sides of the filter water trough are fixedly connected to support rod frames, a rotating plate connected to the extrusion piece is rotatably connected to the support rod frame, and one end of the rotating plate is fixedly connected to a hemispherical block.

[0007] Preferably, the driving mechanism includes a motor fixedly mounted on one side of the frame, a gear ring is fixedly sleeved on the outer wall of the drum, a driving gear meshing with the gear ring is rotatably mounted on one side of the frame, and a belt is installed between one end of the driving gear and the output end of the motor.

[0008] Preferably, one end of the rotating rod is fixedly connected to the driving gear, and the extrusion piece includes mounting ears fixedly connected to both sides of the filter water tank, and the two mounting ears are slidably connected to a sliding rod, and a connecting rod is fixedly connected between the two sliding rods, and the rotating plate is connected to the connecting rod.

[0009] Preferably, a spring 1 is sleeved on each of the two sliding rods, and the two ends of the spring 1 respectively abut against the sliding rod and the mounting ear. A vertical plate for supporting the rotating rod is fixedly connected to the frame. A water outlet filter hole is provided in a circumferential array on the surface of one end of the drum, and a half gear is fixedly installed on the rotating rod.

[0010] Preferably, the outside of the half gear is engaged with a rack frame, both sides of the bottom of the rack frame are fixedly connected to support slides, a slide groove corresponding to the support slide is fixedly connected to the frame, the top of the rack frame is fixedly connected to an extension plate, and the top of the extension plate is fixedly connected to rack 1.

[0011] Preferably, the vertical plate is rotatably connected to a driven rod, the driven rod is fixedly connected to a gear a meshing with a rack 1, the driven rod is fixedly connected to a gear b at one end away from the vertical plate, the frame is fixedly connected to an inclined plate, and the inclined plate is fixedly mounted with a mounting plate.

[0012] Preferably, two groups of guide grooves are symmetrically fixedly connected on the mounting plate, a sliding bar is slidably connected in each guide groove, a brush plate is fixedly connected to every two sliding bars, the two brush plates are arranged up and down, and rack two is engaged on the upper and lower sides of the gear b, and the two rack twos are fixedly connected to the two brush plates respectively.

[0013] Preferably, a round rod is rotatably connected to the vertical plate, a gear d is fixedly connected to the round rod, a gear c meshing with the gear d is fixedly connected to the driven rod, rubber plates are cross-distributedly installed on the round rod, the round rod is located above the second rack, and a torsion spring is sleeved between the round rod and the vertical plate.

[0014] Preferably, rectangular blocks are symmetrically fixedly connected to the inner wall of the filter water tank, each of the rectangular blocks is fixedly connected to a guide rod, and each of the guide rods is sleeved with a second spring.

[0015] Preferably, the four guide rods are slidably connected with sand and gravel filter plates, the two ends of the second spring are fixedly connected with the sand and gravel filter plates and the rectangular block respectively, and the bottoms of the two sliding rods are fixedly connected with push blocks.

[0016] Compared with the prior art, the present invention provides a sand washing machine for mining machinery, which has the following beneficial effects:

[0017] 1. The sand washing machine used in this mining machinery drives the convex block to rotate continuously through the rotating rod, so that the protruding part of the convex block periodically conflicts with the extrusion part, driving the rotating plate to rotate up and down, and then driving the hemispherical block to repeatedly hit the bottom of the discharge hopper; this design destroys the friction between the fine sand and the bottom wall of the discharge hopper and the surface tension of water through vibration, causing the adhering small particles of sand and gravel to fall off, reducing the sliding resistance of sand and gravel, improving the discharge efficiency, effectively avoiding the interruption of transportation caused by blockage, and greatly improving the working efficiency of mining machinery.

[0018] 2. The sand washing machine used in this mining machinery guides and supports the brush plate through the sliding bar in the guide groove. When gear B rotates back and forth, it drives the two racks 2 to move in both directions, driving the brush plate to slide crosswise, so that the bristles repeatedly extend into the water outlet filter holes of the drum. This design can push the stuck irregular sand and gravel out of the filter holes, cooperate with the rotation of the drum to achieve continuous clearing, accelerate the separation of sand and gravel from water, and significantly improve the sand and gravel cleaning efficiency.

[0019] 3. In this mining sand washer, the driven rod drives gear b in both forward and reverse rotations, synchronously driving gear c. This meshes with gear d on the round rod, causing the rod to rotate back and forth, driving the rubber plate to repeatedly strike the water outlet filter holes in the drum. During this process, the torsion spring generates alternating torque due to the rod's rotation, providing auxiliary thrust for the striking action and enhancing the force. This design, combined with the stabbing action of the brush plate, further improves the drum's sand and gravel separation efficiency through the combined action of "mechanical striking + brush clearing," effectively preventing filter hole clogging.

[0020] 4. This mining sand washer uses a sliding rod that moves back and forth, driving the push block to move synchronously. When the push block contacts the sand filter plate, it pushes it downward along the guide rod and compresses spring 2. After the push block disengages, spring 2 resets, causing the filter plate to pop upward. This reciprocating shaking process disperses fine sand and gravel accumulated on the filter plate, preventing localized blockages and ensuring that water flows smoothly through the filter plate to the bottom of the filter tank, achieving efficient water recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a sand washing machine for mining machinery proposed by the present invention;

[0022] Figure 2 The present invention proposes Figure 1 Schematic diagram of the structure of part A;

[0023] Figure 3 This is a side structural diagram of a sand washing machine for mining machinery proposed by the present invention;

[0024] Figure 4 The present invention proposes Figure 3 Schematic diagram of the structure of part B;

[0025] Figure 5 This is a front view structural diagram of a sand washing machine for mining machinery proposed by the present invention;

[0026] Figure 6 The present invention proposes Figure 5 Schematic diagram of the structure of part C;

[0027] Figure 7 This is a schematic diagram of the back structure of a sand washing machine for mining machinery proposed by the present invention;

[0028] Figure 8 This is a structural diagram of a sand and gravel filter plate, a hemispherical block, and a sliding rod in a sand washing machine for mining machinery proposed by the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of a sand washing machine for mining machinery proposed by the present invention from the left side;

[0030] Figure 10 The present invention proposes Figure 9 Schematic diagram of the structure of part D;

[0031] Figure 11 This is a structural schematic diagram of the transfer rod, protrusion and round rod of a sand washing machine for mining machinery proposed by the present invention.

[0032] In the figure: 1, frame; 2, drum; 201, flushing pipe; 3, feed hopper; 4, discharge hopper; 5, filter water tank; 6, drive mechanism; 601, motor; 602, gear ring; 603, drive gear; 604, belt; 7, rotating rod; 8, bump; 9, extrusion; 901, mounting ear; 902, slide rod; 903, connecting rod; 904, spring 1; 10, support rod frame; 11, rotating plate; 12, hemispherical block; 13, vertical plate; 14, water outlet filter mesh hole; 15, half tooth Wheel; 16. Rack frame; 17. Support slide; 18. Slide groove; 19. Extension plate; 20. Rack 1; 21. Driven rod; 22. Gear a; 23. Gear b; 24. Inclined plate; 25. Mounting plate; 26. Guide groove; 27. Sliding bar; 28. Brush plate; 29. ​​Rack 2; 30. Round rod; 31. Gear d; 32. Gear c; 33. Rubber plate; 34. Torsion spring; 35. Rectangular block; 36. Guide rod; 37. Spring 2; 38. Sand and gravel filter plate; 39. Push block. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] Example 1: Reference Figures 1-11 A sand washing machine for mining machinery includes: a frame 1 on which a drum 2 is rotatably mounted, a feed hopper 3, a discharge hopper 4 and a filter water trough 5 are fixedly mounted on the frame 1, a flushing pipe 201 is provided in the drum 2, and a driving mechanism 6 for driving the drum 2 to rotate is provided on the frame 1, and also includes: a rotating rod 7 arranged on the frame 1, one end of the rotating rod 7 is fixedly connected to a protrusion 8, both sides of the filter water trough 5 are provided with extrusion pieces 9 that abut against the protrusion 8, and support rod frames 10 are fixedly connected on both sides of the filter water trough 5, and a rotating plate 11 connected to the extrusion piece 9 is rotatably connected to the support rod frame 10, and a hemispherical block 12 is fixedly connected to one end of the rotating plate 11.

[0036] In the present invention, by connecting the flushing pipe 201 to the external water source, water is sprayed around the drum 2 to clean the sand and gravel, and the protrusion 8 is driven to rotate continuously by the rotating rod 7, so that the protrusion of the protrusion 8 can periodically conflict with the extrusion member 9, so that the extrusion member 9 repeatedly rotates the rotating plate 11 up and down, and then the other end of the rotating plate 11 drives the hemispherical block 12 to repeatedly knock on the bottom of the discharge hopper 4, so that when the discharge hopper 4 discharges the cleaned sand and gravel, it can destroy the friction between the fine sand and the bottom wall of the discharge hopper 4 and the surface tension of water through vibration, so that the small particles of sand and gravel that are stuck together fall off and avoid accumulation. The vibration reduces the sliding resistance of the sand and gravel, improves the discharge efficiency, avoids the transportation interruption caused by blockage, and greatly improves the working efficiency in the mining machinery.

[0037] Example 2: Reference Figures 1-11 , which is basically the same as the first embodiment, and further, the driving mechanism 6 includes a motor 601 fixedly mounted on one side of the frame 1, a gear ring 602 is fixedly sleeved on the outer wall of the drum 2, a driving gear 603 meshing with the gear ring 602 is rotatably mounted on one side of the frame 1, and a belt 604 is installed between one end of the driving gear 603 and the output end of the motor 601.

[0038] In the present invention, when using the sand washing machine, the sand and gravel to be cleaned are poured from the feed hopper 3 into the drum 2, and the drum 2 is rotated at a constant speed by the driving mechanism 6, wherein the motor 601 is started, and the driving gear 603 is driven to rotate through the belt 604, and engages with the gear ring 602 on the outer wall of the drum 2 to rotate the drum 2.

[0039] One end of the rotating rod 7 is fixedly connected to the driving gear 603, and the extrusion piece 9 includes mounting ears 901 fixedly connected to both sides of the filter water tank 5. The two mounting ears 901 are slidably connected to the sliding rods 902, and a connecting rod 903 is fixedly connected between the two sliding rods 902. The rotating plate 11 is connected to the connecting rod 903.

[0040] A spring 1 904 is sleeved on each of the two slide bars 902 , and both ends of the spring 1 904 respectively abut against the slide bar 902 and the mounting ear 901 . A vertical plate 13 for supporting the rotating rod 7 is fixedly connected to the frame 1 .

[0041] In the present invention, while the motor 601 rotates the driving gear 603, it will automatically drive the rotating rod 7 to rotate, causing the protrusion 8 to rotate. When the protruding part of the protrusion 8 conflicts with the slide bar 902, the slide bar 902 slides downward under the guidance of the mounting ear 901, and at the same time compresses the spring 1 904, so that the two slide bars 902 drive the connecting rod 903 downward, and drive the rotating plate 11 downward, so that the hemispherical block 12 knocks against the bottom wall of the discharge hopper 4. When the protruding part of the protrusion 8 disengages from the slide bar 902, the spring 1 904 automatically causes the slide bar 902 to drive the connecting rod 903 to reset, so that the hemispherical block 12 performs the next knock.

[0042] Example 3: Reference Figure 3-Figure 11 , which is basically the same as the first embodiment, but further, a water outlet filter hole 14 is opened in a circumferential array on the surface of one end of the drum 2, and a half gear 15 is fixedly mounted on the rotating rod 7; the outside of the half gear 15 is meshed with a rack frame 16, and both sides of the bottom of the rack frame 16 are fixedly connected to support slides 17, and a slide groove 18 corresponding to the support slide 17 is fixedly connected to the frame 1, and an extension plate 19 is fixedly connected to the top of the rack frame 16, and a rack 20 is fixedly connected to the top of the extension plate 19.

[0043] In the present invention, when the rotating rod 7 rotates, it also drives the half gear 15 to rotate and engage with the external rack frame 16. The rack frame 16 slides in the slide groove 18 through the support slide 17, so that the rack frame 16 slides back and forth, thereby driving the rack 120 on the top extension plate 19 to slide back and forth. When the rack 120 slides back and forth, it automatically engages with the gear a22 back and forth, causing the gear a22 to rotate forward and reverse, thereby automatically driving the driven rod 21 to rotate forward and reverse, and the driven rod 21 drives the gear b23 to rotate.

[0044] A driven rod 21 is rotatably connected to the vertical plate 13, and a gear a22 meshing with the rack 1 20 is fixedly connected to the driven rod 21. A gear b23 is fixedly connected to the end of the driven rod 21 away from the vertical plate 13. An inclined plate 24 is fixedly connected to the frame 1, and a mounting plate 25 is fixedly mounted on the inclined plate 24.

[0045] Two sets of guide grooves 26 are symmetrically fixedly connected to the mounting plate 25, and a sliding bar 27 is slidably connected in each guide groove 26. A brush plate 28 is fixedly connected to every two sliding bars 27. The two brush plates 28 are arranged up and down, and racks 29 are meshed on the upper and lower sides of the gear b23. The two racks 29 are fixedly connected to the two brush plates 28 respectively.

[0046] In the present invention, the sliding bar 27 in the guide groove 26 can guide and slide inside it, and can support it, so as to guide and support the sliding of the two brush plates 28. When the gear b23 rotates back and forth, the two racks 29 repeatedly move in both directions, driving the two brush plates 28 to move crosswise, and the brushes on the brush plates 28 repeatedly enter the water outlet filter holes 14 on the drum 2, pushing the irregular sand and gravel stuck in the water outlet filter holes 14 to fall into the drum 2. As the gear b23 rotates, the bristles on the two brush plates 28 can enter the holes of the water outlet filter holes 14 respectively. While the drum 2 continues to rotate, the sand and gravel stuck in the holes are poked out and fall, and the stuck sand and gravel are cleared, so that the sand and gravel are separated from the water faster and more efficiently, thereby improving the efficiency of sand and gravel cleaning.

[0047] Example 4: Reference Figure 4-11, which is basically the same as the first embodiment. Furthermore, a round rod 30 is rotatably connected to the vertical plate 13, a gear d31 is fixedly connected to the round rod 30, a gear c32 meshing with the gear d31 is fixedly connected to the driven rod 21, and rubber plates 33 are cross-distributedly installed on the round rod 30. The round rod 30 is located above the rack 29, and a torsion spring 34 is sleeved between the round rod 30 and the vertical plate 13.

[0048] In the present invention, while the driven rod 21 drives the gear b23 to rotate forward and reverse, it also drives the gear c32 to rotate, meshing with the gear d31 on the round rod 30, so that the gear d31 rotates forward and reverse, driving the round rod 30 to rotate forward and reverse continuously, and then driving multiple rubber plates 33 to repeatedly slap the water outlet filter hole 14 on the drum 2. While the round rod 30 rotates forward and reverse continuously, the torsion spring 34 twists repeatedly, and the torsion spring 34 provides a certain torsional force to the round rod 30 to rotate forward and reverse, so that the rubber plate 33 has a greater slapping force on the water outlet filter hole 14. With the brush on the brush plate 28 entering the hole, plus slapping, the drum 2 is more efficient in separating sand and gravel from water, further preventing the water filter hole from being blocked.

[0049] Example 5: Reference Figures 8-10 , which is basically the same as the first embodiment, furthermore, rectangular blocks 35 are symmetrically fixedly connected to the inner wall of the filter tank 5, each rectangular block 35 is fixedly connected to a guide rod 36, and each guide rod 36 is sleeved with a spring 2 37.

[0050] The four guide rods 36 are slidably connected to the sand and gravel filter plates 38, the two ends of the spring 37 are fixedly connected to the sand and gravel filter plates 38 and the rectangular block 35 respectively, and the bottoms of the two sliding rods 902 are fixedly connected to the push blocks 39.

[0051] The sand and gravel filter plate 38 is filtered and then the water flow is recycled.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sand washing machine for mining machinery, comprising: A frame (1) on which a drum (2) is rotatably mounted is provided, a feed hopper (3), a discharge hopper (4) and a filter water tank (5) are fixedly mounted on the frame (1), a flushing pipe (201) is provided in the drum (2), and a driving mechanism (6) for driving the drum (2) to rotate is provided on the frame (1), characterized in that it further comprises: A rotating rod (7) is provided on the frame (1), one end of the rotating rod (7) is fixedly connected to a protrusion (8), both sides of the filtering water tank (5) are provided with extrusion pieces (9) that abut against the protrusion (8), and both sides of the filtering water tank (5) are fixedly connected to support rod frames (10), a rotating plate (11) connected to the extrusion piece (9) is rotatably connected to the support rod frame (10), and one end of the rotating plate (11) is fixedly connected to a hemispherical block (12).

2. A sand washing machine for mining machinery according to claim 1, characterized in that: The driving mechanism (6) comprises a motor (601) fixedly mounted on one side of the frame (1); a gear ring (602) is fixedly sleeved on the outer wall of the roller (2); a driving gear (603) meshing with the gear ring (602) is rotatably mounted on one side of the frame (1); and a belt (604) is mounted between one end of the driving gear (603) and the output end of the motor (601).

3. A sand washing machine for mining machinery according to claim 2, characterized in that: One end of the rotating rod (7) is fixedly connected to the driving gear (603), and the extrusion member (9) includes mounting ears (901) fixedly connected to both sides of the filter water tank (5), and the two mounting ears (901) are slidably connected to a sliding rod (902), and a connecting rod (903) is fixedly connected between the two sliding rods (902), and the rotating plate (11) is connected to the connecting rod (903).

4. A sand washing machine for mining machinery according to claim 3, characterized in that: A spring (904) is sleeved on each of the two slide bars (902), and the two ends of the spring (904) respectively abut against the slide bar (902) and the mounting ear (901). A vertical plate (13) for supporting the rotating rod (7) is fixedly connected to the frame (1). A water outlet filter hole (14) is provided in a circumferential array on the surface of one end of the drum (2), and a half gear (15) is fixedly installed on the rotating rod (7).

5. The sand washing machine for mining machinery according to claim 4, characterized in that: The outside of the half gear (15) is meshed with a rack frame (16), both sides of the bottom of the rack frame (16) are fixedly connected to support slides (17), a slide groove (18) corresponding to the support slide (17) is fixedly connected to the frame (1), the top of the rack frame (16) is fixedly connected to an extension plate (19), and the top of the extension plate (19) is fixedly connected to a rack 1 (20).

6. A sand washing machine for mining machinery according to claim 5, characterized in that: A driven rod (21) is rotatably connected to the vertical plate (13), a gear a (22) meshing with a rack (20) is fixedly connected to the driven rod (21), a gear b (23) is fixedly connected to one end of the driven rod (21) away from the vertical plate (13), an inclined plate (24) is fixedly connected to the frame (1), and a mounting plate (25) is fixedly mounted on the inclined plate (24).

7. A sand washing machine for mining machinery according to claim 6, characterized in that: Two groups of guide grooves (26) are symmetrically fixedly connected on the mounting plate (25), a sliding bar (27) is slidably connected in each guide groove (26), and a brush plate (28) is fixedly connected to each two sliding bars (27). The two brush plates (28) are arranged up and down, and the upper and lower sides of the gear b (23) are meshed with racks (29), and the two racks (29) are fixedly connected to the two brush plates (29) respectively.

8. The sand washing machine for mining machinery according to claim 7, characterized in that: A round rod (30) is rotatably connected to the vertical plate (13), a gear d (31) is fixedly connected to the round rod (30), a gear c (32) meshing with the gear d (31) is fixedly connected to the driven rod (21), rubber plates (33) are cross-distributedly installed on the round rod (30), the round rod (30) is located above the second rack (29), and a torsion spring (34) is sleeved between the round rod (30) and the vertical plate (13).

9. The sand washing machine for mining machinery according to claim 3, characterized in that: Rectangular blocks (35) are symmetrically fixedly connected to the inner wall of the filtering water tank (5), each rectangular block (35) is fixedly connected to a guide rod (36), and each guide rod (36) is sleeved with a second spring (37).

10. The sand washing machine for mining machinery according to claim 9, characterized in that: The four guide rods (36) are slidably connected to the sand and gravel filter plates (38), the two ends of the spring (37) are fixedly connected to the sand and gravel filter plates (38) and the rectangular block (35), and the bottoms of the two sliding rods (902) are fixedly connected to the push blocks (39).

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