Energy-saving electric waste sand crushing and grinding machine

Abstract

The invention relates to the technical field of waste sand crushing, in particular to an energy-saving electric waste sand crushing and grinding machine which comprises a base and a fixing cylinder, a supporting seat is fixedly connected between the bottom of the fixing cylinder and the top of the base, a crushing cylinder is arranged in the fixing cylinder, and a driving mechanism is arranged at one end of the crushing cylinder and comprises a driving shaft penetrating through the crushing cylinder. A first crushing mechanism is arranged on the side wall of the crushing barrel, a second crushing mechanism is arranged between the crushing barrel and the fixing barrel, and an adjusting mechanism is arranged at the end, away from the driving mechanism, of the crushing barrel. The crushing barrel rotates through the driving motor, casting waste sand is impacted in the rotating process, the casting waste sand is preliminarily crushed, part of the waste sand falls into the fixing barrel, and in the rotating process of the crushing barrel, first blades on the outer wall of the crushing barrel are matched with second blades and umbrella-shaped blades on the fixing barrel to cut and crush the waste sand multiple times; the situation that the blades are damaged too fast due to the fact that the blades directly crush large waste sand is avoided, and energy is saved while the crushing effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of waste sand crushing, in particular to an energy-saving electric waste sand crushing and grinding machine. Background Art

[0002] Waste foundry sand is the waste generated when preparing sand and core sand molding materials in sand casting. It is mainly made of high temperature and corrosion resistant quartz sand or a combination of quartz sand and clay. If the waste foundry sand is discarded or treated by simple methods such as landfill and incineration, it will not only occupy a large amount of land resources, but also may cause environmental pollution. With the development of recycling technology and policy encouragement, the recycling of waste foundry sand has been further developed. From the perspective of resource conservation, quartz sand and other resources in waste foundry sand have certain reuse value, and recycling can reduce the demand for raw materials; from the perspective of environmental benefits, recycling and utilizing waste foundry sand can reduce waste emissions and reduce environmental pollution, which is in line with the concept of sustainable development.

[0003] Among the commonly used crushing equipment for foundry waste sand, some equipment only crushes the foundry waste sand to be processed once, and the waste sand is directly discharged after crushing. Therefore, the size of the waste sand obtained after crushing may be quite different, and it cannot be directly recycled and may need to be processed separately. In order to obtain the required crushed particle size, the crushing equipment may need to crush the foundry waste sand repeatedly. Therefore, the working process and time of the crushing equipment need to be increased, resulting in high crushing energy consumption and low crushing efficiency.

[0004] Therefore, the present invention provides an energy-saving electric waste sand crushing and grinding machine. Summary of the invention

[0005] In view of the problem of high energy consumption in crushing of waste foundry sand in the prior art, the present invention provides an energy-saving electric waste sand crushing and grinding machine.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an energy-saving electric waste sand crushing and grinding machine, comprising a base and a fixed cylinder, a support seat is fixedly connected between the bottom of the fixed cylinder and the top of the base, a crushing cylinder is arranged in the fixed cylinder, a driving mechanism is arranged at one end of the crushing cylinder, the driving mechanism comprises a driving shaft penetrating the crushing cylinder, a first crushing mechanism is arranged on the side wall of the crushing cylinder, a second crushing mechanism is arranged between the crushing cylinder and the fixed cylinder, and an adjusting mechanism is arranged at one end of the crushing cylinder away from the driving mechanism; the driving mechanism is configured to drive the crushing cylinder to rotate by the rotation of the driving shaft, and provide power for the first crushing mechanism and the second crushing mechanism; the first crushing mechanism is configured to make the foundry waste sand entering the crushing cylinder hit during the rotation under the action of the driving mechanism, and perform preliminary screening and preliminary crushing on the foundry waste sand; the second crushing mechanism is configured to further crush and grind the foundry waste sand that has been preliminarily treated through the cooperation between the rotating crushing cylinder and the fixed fixed cylinder; the adjusting mechanism is configured to adjust the position of the crushing cylinder according to the weight of the foundry waste sand in the crushing cylinder during the crushing process of the equipment, thereby changing the crushing effect of the second crushing mechanism.

[0007] Preferably, one end of the crushing barrel is fixedly connected to a connecting plate, the end of the crushing barrel away from the connecting plate is fixedly connected to a feed hopper, the inner wall of the feed hopper is fixedly connected to a fixing plate, the fixing plate and the connecting plate are arranged parallel, and a discharge port is opened on one side of the support seat.

[0008] Preferably, the driving mechanism also includes an inner gear ring fixedly connected to the connecting plate and the fixed plate respectively, the outer wall of the driving shaft is fixedly connected with fixed teeth, the fixed teeth are meshed with the inner gear ring, and a driving motor is provided at one end of the crushing barrel close to the connecting plate, and the output end of the driving motor is fixedly connected to the driving shaft.

[0009] Preferably, the first crushing mechanism comprises a feed chute evenly opened on the side wall of the crushing cylinder, a fixing nail is fixedly connected in the feed chute, and the tip of the fixing nail faces the inside of the crushing cylinder.

[0010] Preferably, the second crushing mechanism includes a first blade fixedly connected to the outer wall of the crushing cylinder, a screen is fixedly connected to the bottom of the fixed cylinder, two groups of second blades are respectively arranged on both sides of the screen, the second blade is fixedly connected to the inner wall of the fixed cylinder, a group of umbrella-shaped blades is fixedly connected to the top of the screen, the blade gap of the second blade is the same as the blade gap of the umbrella-shaped blade, and the second blade and the umbrella-shaped blade are staggered with the first blade.

[0011] Preferably, the diameter of the crushing cylinder is smaller than the diameter of the fixing cylinder, the distance between the two fixing nails is larger than the distance between the two umbrella-shaped blades, and the distance between the two umbrella-shaped blades is larger than the mesh size of the screen.

[0012] Preferably, the adjustment mechanism comprises a movable rod rotatably connected to the fixed plate, a bearing is provided between the movable rod and the fixed plate, and one end of the movable rod away from the fixed plate is fixedly connected to the first sliding block.

[0013] Preferably, a fixing seat is fixedly connected to the top of the base, a second slide groove is provided on the side of the fixing seat close to the movable rod, a movable groove is provided inside the upper end of the fixing seat, an electric telescopic rod is fixedly connected to the bottom of the movable groove, a second slider is fixedly connected to the top of the electric telescopic rod, a first slide groove is provided on the top of the second slider, a gravity sensor is fixedly installed on the outer wall of the connecting plate, and the electric telescopic rod is electrically connected to the gravity sensor.

[0014] Preferably, the first sliding block is slidably connected to the first sliding groove, and the contact surfaces of the movable rod and the second sliding block are both inclined surfaces.

[0015] Preferably, the driving motor and the fixing seat are respectively located at two ends of the crushing barrel.

[0016] Beneficial effects of the present invention:

[0017] (1) The energy-saving electric waste sand crushing and grinding machine described in the present invention drives the crushing drum to rotate by driving the motor. The foundry waste sand inside the crushing drum is impacted during the rotation process, so that the foundry waste sand is initially crushed and part of the waste sand falls into the fixed drum. During the rotation of the crushing drum, the first blade on the outer wall cooperates with the second blade and the umbrella blade on the fixed drum to cut and crush the waste sand multiple times, thereby preventing the blade from directly crushing large pieces of waste sand, which would cause the blade to be damaged too quickly. This ensures the crushing effect while saving energy.

[0018] (2) In the energy-saving electric waste sand crushing and grinding machine described in the present invention, the second blade and the umbrella-shaped blade can not only cooperate with the first blade in cutting, but also play a role in blocking larger waste sand, thereby preventing the waste sand that falls into the fixed cylinder from accumulating at the lowest point of the fixed cylinder and affecting the crushing effect. The waste sand that has passed through multiple partitions can be cut and crushed multiple times when the first blade rotates, thereby improving the crushing efficiency.

[0019] (3) The energy-saving electric waste sand crushing and grinding machine described in the present invention triggers the gravity sensor to transmit information to the electric telescopic rod according to the weight of the waste sand in the crushing barrel, thereby controlling the extension and retraction of the electric telescopic rod, so that the crushing barrel can move back and forth during the rotation process, thereby changing the gap between the first blade and the second blade and the gap between the first blade and the umbrella-shaped blade, thereby crushing the waste sand more finely. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1A schematic diagram of the overall structure provided by the present invention;

[0022] Figure 2 A schematic diagram of the connection between the fixed cylinder and the second crushing mechanism provided by the present invention;

[0023] Figure 3 for Figure 2 A magnified image of point A;

[0024] Figure 4 A schematic diagram of the connection between the crushing barrel and the adjustment mechanism provided by the present invention;

[0025] Figure 5 A schematic diagram of the internal structure of the crushing cylinder provided by the present invention;

[0026] Figure 6 for Figure 5 A magnified view of point B;

[0027] Figure 7 A cross-sectional view of a crushing barrel provided by the present invention;

[0028] Figure 8 A schematic diagram of the connection between the fixing plate and the driving shaft provided by the present invention;

[0029] Fig. 9 A cross-sectional view of the connection between the fixing plate and the driving shaft provided by the present invention;

[0030] Fig.10 A schematic diagram of the connection between the movable rod and the fixed plate provided by the present invention;

[0031] Fig.11 An internal cross-sectional view of a fixing base provided by the present invention;

[0032] Fig.12 This is a schematic diagram of the connection between the second sliding block and the movable rod provided by the present invention.

[0033] In the figure: 1. base; 2. crushing cylinder; 21. connecting plate; 3. feed hopper; 31. fixed plate; 4. fixed cylinder; 5. support seat; 51. discharge port; 6. driving mechanism; 61. driving motor; 62. driving shaft; 63. inner gear ring; 64. fixed tooth; 7. first crushing mechanism; 71. discharge chute; 72. fixing nail; 8. second crushing mechanism; 81. first blade; 82. second blade; 83. screen; 84. umbrella-shaped blade; 9. adjusting mechanism; 91. movable rod; 92. bearing; 93. first slider; 94. fixed seat; 95. movable slot; 96. electric telescopic rod; 97. second slider; 98. first slide slot; 99. second slide slot. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] Example: Figure 1-Figure 12 As shown, an energy-saving electric waste sand crushing and grinding machine described in the present invention includes a base 1 and a fixed cylinder 4, a support seat 5 is fixedly connected between the bottom of the fixed cylinder 4 and the top of the base 1, a crushing cylinder 2 is arranged in the fixed cylinder 4, and a driving mechanism 6 is arranged at one end of the crushing cylinder 2. The driving mechanism 6 includes a driving shaft 62 that penetrates the crushing cylinder 2, a first crushing mechanism 7 is arranged on the side wall of the crushing cylinder 2, a second crushing mechanism 8 is arranged between the crushing cylinder 2 and the fixed cylinder 4, and an adjusting mechanism 9 is arranged at the end of the crushing cylinder 2 away from the driving mechanism 6; the driving mechanism 6 is assembled to drive the crushing cylinder 2 to rotate through the rotation of the driving shaft 62, and is the first crushing mechanism 7 and the second crushing mechanism 8 provide power; the first crushing mechanism 7 is equipped to, under the action of the driving mechanism 6, allow the foundry waste sand entering the crushing cylinder 2 to be impacted during rotation, so as to perform preliminary screening and preliminary crushing of the foundry waste sand; the second crushing mechanism 8 is equipped to further crush and grind the foundry waste sand that has been preliminarily treated through the cooperation between the rotating crushing cylinder 2 and the fixed fixed cylinder 4, so as to enhance the crushing effect; the adjusting mechanism 9 is equipped to adjust the position of the crushing cylinder 2 according to the weight of the foundry waste sand in the crushing cylinder 2 during the crushing process of the equipment, so as to change the crushing effect of the second crushing mechanism 8.

[0036] In this embodiment, the driving motor 61 is started, so that the driving shaft 62 drives the crushing cylinder 2 to rotate. The casting waste sand inside the crushing cylinder 2 will collide with each other during the rotation of the crushing cylinder 2, and will also collide with the tip of the fixing nail 72. Under the collision, the large pieces of waste sand are broken until they can fall from the discharge chute 71 into the fixed cylinder 4, and the small particles of waste sand directly fall from the screen 83 to the fixed cylinder 4. The gap between the two fixing nails 72 is larger than the gap between the two second blades 82 and the two umbrella-shaped blades 84. When falling into the fixed cylinder 4, the waste sand to be processed is initially crushed in the crushing cylinder 2, so that the large pieces of waste sand that cannot pass through the feed chute 71 are crushed during the impact until they are of a size that can pass through the feed chute 71, thereby preventing the blade from directly cutting the large-sized waste sand, causing damage to the blade and affecting the efficiency. When the waste sand falls into the fixed cylinder 4 during the rotation of the crushing cylinder 2, the waste sand of the same size may fall out from different feed chute 71. Therefore, under the isolation of the second blade 82 and the umbrella blade 84, the larger pieces of waste sand that fall into the fixed cylinder 4 will not be A large amount of accumulation is formed at the same place to avoid affecting the crushing effect of the second crushing mechanism 8. When the crushing cylinder 2 drives the first blade 81 to rotate, the second blade 82 and the umbrella blade 84 are in a stationary state. Multiple groups of first blades 81 overlap and cut with two groups of second blades 82, one group of umbrella blades 84 and two groups of second blades 82 in turn, and the waste sand that cannot pass through the screen 83 is further cut and crushed. At the same time, the gravity sensor detects the weight of the waste sand in the crushing cylinder 2, and transmits information according to the weight situation to control the telescopic state of the electric telescopic rod 96. During the crushing process, the crushing cylinder 2 can be continuously fed. When the electric telescopic rod 96 is extended, the feeding device can suspend feeding to avoid excessive waste sand in the crushing cylinder 2 affecting the crushing effect of the second crushing mechanism 8. The electric telescopic rod 96 is extended to push the movable rod 91 toward the fixed cylinder 4, thereby pushing the crushing cylinder 2 to move, so that the distance between the first blade 81 and the second blade 82 and the umbrella blade 84 changes, so that the crushing effect is more delicate, until the waste sand particles form a size that can pass through the screen 83.

[0037] In this embodiment, a group of steel balls can be placed in the crushing barrel 2 to assist in crushing. If steel balls are placed, the length of the fixing nails 72 needs to match the steel balls, and the tips of the fixing nails 72 should avoid contact with the steel balls to prevent the steel balls from damaging the fixing nails 72. The diameter of the steel balls needs to be larger than the gap between the two fixing nails 72 to prevent the steel balls from falling from the crushing barrel 2. During the rotation of the crushing barrel 2, the steel balls smash the blocky waste sand and make it fall from the discharge chute 71 into the fixed barrel 4.

[0038] like Figure 1-Figure 9As shown, one end of the crushing barrel 2 is fixedly connected to the connecting plate 21, the end of the crushing barrel 2 away from the connecting plate 21 is fixedly connected to the feed hopper 3, the inner wall of the feed hopper 3 is fixedly connected to the fixing plate 31, the fixing plate 31 and the connecting plate 21 are arranged in parallel, and a discharge port 51 is opened on one side of the support seat 5; the driving mechanism 6 also includes an inner gear ring 63 fixedly connected to the connecting plate 21 and the fixing plate 31 respectively, the outer wall of the driving shaft 62 is fixedly connected to the fixing teeth 64, the fixing teeth 64 are meshed with the inner gear ring 63, and a driving motor 61 is arranged at the end of the crushing barrel 2 close to the connecting plate 21, and the output end of the driving motor 61 is fixedly connected to the driving shaft 62; the driving motor 61 and the fixing seat 94 are respectively located at both ends of the crushing barrel 2.

[0039] In this embodiment, the fixed cylinder 4 is supported by the support seat 5, and the crushing cylinder 2 is supported by the driving shaft 62 and the movable rod 91. The driving shaft 62 passes through the connecting plate 21. The inner gear ring 63 on the connecting plate 21 and the inner gear ring 63 on the fixed plate 31 are respectively meshed with the two fixed teeth 64 on the driving shaft 62. Therefore, when the driving shaft 62 rotates, the crushing cylinder 2 can be driven to rotate, and when the crushing cylinder 2 moves, the rotation of the crushing cylinder 2 can be ensured not to be affected. The fixed teeth 64 are always meshed with the inner gear ring 63. The feeding device puts the casting waste sand to be processed into the crushing cylinder 2 from the feeding hopper 3. The inclined inner wall of the feeding hopper 3 prevents the waste sand from accumulating in the feeding hopper 3. The waste sand will directly roll into the crushing cylinder 2, and continuous feeding can be carried out during the crushing process. After being crushed by the first crushing mechanism 7 and the second crushing mechanism 8, the waste sand falls from the screen 83, and the crushed casting waste sand can be taken out from the discharge port 51.

[0040] In this embodiment, if Fig. 9 As shown, the fixed teeth 64 at one end of the drive shaft 62 away from the drive motor 61 do not completely overlap with the inner gear ring 63, so that the crushing barrel 2 can move toward the drive motor 61 when the position of the drive shaft 62 remains unchanged.

[0041] like Figure 2-Figure 7 As shown, the first crushing mechanism 7 includes a feed chute 71 evenly opened on the side wall of the crushing cylinder 2, and a fixing nail 72 is fixedly connected in the feed chute 71, and the tip of the fixing nail 72 faces the inside of the crushing cylinder 2; the second crushing mechanism 8 includes a first blade 81 fixedly connected to the outer wall of the crushing cylinder 2, a screen 83 is fixedly connected to the bottom of the fixed cylinder 4, and two groups of second blades 82 are respectively arranged on both sides of the screen 83, the second blades 82 are fixedly connected to the inner wall of the fixed cylinder 4, and a group of umbrella-shaped blades 84 are fixedly connected to the top of the screen 83, the blade gap of the second blade 82 is the same as the blade gap of the umbrella-shaped blade 84, and the second blade 82 and the umbrella-shaped blade 84 are staggered with the first blade 81; the diameter of the crushing cylinder 2 is smaller than the diameter of the fixed cylinder 4, the distance between the two fixing nails 72 is greater than the distance between the two umbrella-shaped blades 84, and the distance between the two umbrella-shaped blades 84 is greater than the sieve hole size of the screen 83.

[0042] In this embodiment, the waste sand to be processed enters the crushing drum 2 from the feed hopper 3. When the crushing drum 2 rotates, the waste sand with smaller size falls directly from the feed chute 71 to the fixed drum 4. The large waste sand that cannot pass through the feed chute 71 is driven upward by the rotation of the crushing drum 2 and falls down under the action of gravity. Therefore, the waste sand collides with each other and with the inner wall of the crushing drum 2. The tip of the fixing nail 72 is closer to the center of the crushing drum 2 than the inner wall of the crushing drum 2. Therefore, the large waste sand is more likely to collide with the fixing nail 72. The tip of the crushing drum 2 collides with the tip of the crushing drum 2, so that large pieces of waste sand are broken. The large pieces of waste sand that are initially crushed by the crushing drum 2 and cannot pass through the discharge chute 71 continue to remain in the crushing drum 2, and the waste sand that meets the specifications and sizes of the discharge chute 71 directly falls from the discharge chute 71 into the fixed drum 4 during the rotation of the crushing drum 2. Among this part of the waste sand, the waste sand particles that meet the specifications and sizes of the screen 83 directly pass through the screen 83 and fall from the fixed drum 4, and the waste sand pieces that cannot pass through the screen 83 remain in the fixed drum 4 for further crushing; When small-sized waste sand falls from the crushing cylinder 2, it will fall from different feeding troughs 71. The second blade 82 and the umbrella-shaped blade 84 can play a role of blocking. According to the different falling positions, larger pieces of waste sand will be blocked at different positions by the second blade 82 and the umbrella-shaped blade 84 to prevent all the waste sand from accumulating at the lowest point of the fixed cylinder 4. The umbrella-shaped blade 84 prevents larger pieces of waste sand from reaching the lowest point of the fixed cylinder 4. Therefore, while the crushing cylinder 2 is initially crushing the waste sand, the first blade 81 cooperates with the second blade 82 and the umbrella-shaped blade 84 to crush the solid sand. The waste sand on the fixed cylinder 4 is further crushed. When the first blade 81 overlaps with the first group of second blades 82, the larger piece of waste sand intercepted by the group of second blades 82 is crushed and rolled toward the lowest point of the fixed cylinder 4, and then the larger piece of waste sand intercepted at the next point is crushed. The waste sand that meets the specifications of the screen 83 falls from the fixed cylinder 4, and the waste sand that cannot pass through the screen 83 continues to be crushed. In the initial state, when the first blade 81 overlaps with the second blade 82, the single first blade 81 is in the middle of the gap between the two second blades 82.

[0043] like Figure 8-Figure 12As shown, the adjustment mechanism 9 includes a movable rod 91 rotatably connected to the fixed plate 31, a bearing 92 is arranged between the movable rod 91 and the fixed plate 31, and a first slider 93 is fixedly connected to the end of the movable rod 91 away from the fixed plate 31; a fixed seat 94 is fixedly connected to the top of the base 1, a second slide groove 99 is provided on the side of the fixed seat 94 close to the movable rod 91, a movable groove 95 is provided inside the upper end of the fixed seat 94, an electric telescopic rod 96 is fixedly connected to the bottom of the movable groove 95, a second slider 97 is fixedly connected to the top of the electric telescopic rod 96, a first slide groove 98 is provided on the top of the second slider 97, a gravity sensor is fixedly installed on the outer wall of the connecting plate 21, and the electric telescopic rod 96 is electrically connected to the gravity sensor; the first slider 93 is slidably connected to the first slide groove 98, and the contact surfaces of the movable rod 91 and the second slider 97 are both inclined.

[0044] When the gravity sensor detects that the weight of the waste sand in the crushing cylinder 2 is too heavy, the electric telescopic rod 96 is controlled to extend to push the second slider 97 to move upward. The positions where the second slider 97 and the movable rod 91 contact each other are both inclined surfaces. Therefore, when the second slider 97 moves upward, the first slider 93 on the movable rod 91 slides downward in the first slide groove 98 opened on the second slider 97, so that the movable rod 91 is translated toward the fixed cylinder 4 and pushes the crushing cylinder 2 to move. When the crushing cylinder 2 moves, the first blade 81 is driven to move, so that the distance between the first blade 81 and the second blade 82 and the umbrella blade 84 changes. Therefore, the crushing effect formed during crushing also begins to change. Compared with when the position of the first blade 81 does not move, smaller waste sand particles can be crushed. Under the change of the weight of the waste sand in the crushing cylinder 2, the position of the first blade 81 moves back and forth repeatedly to crush the waste sand more finely.

[0045] Working principle: When in use, the feeding device puts the casting waste sand to be processed into the crushing cylinder 2, and the driving shaft 62 rotates to drive the crushing cylinder 2 to rotate, so that the waste sand of smaller size falls from the discharge chute 71 to the fixed cylinder 4, and the large pieces of waste sand are impacted and crushed during the rotation of the crushing cylinder 2, and fall into the waste sand on the fixed cylinder 4. The waste sand that meets the specifications of the screen 83 falls from the screen 83, and the waste sand that cannot pass through the screen 83 is intercepted by the second blade 82 and the umbrella blade 84 at different positions to avoid accumulation in the same place and affecting the crushing effect. When the crushing cylinder 2 rotates, it drives multiple groups of first blades 81 to overlap with the second blades 82 and the umbrella blades 84 in sequence, and cuts and crushes the waste sand intercepted by the second blades 82 and the umbrella blades 84. During the crushing process, the small particles of waste sand generated are Under the action of gravity, it moves toward the screen 83 and falls. The waste sand that cannot pass through the screen 83 continues to be crushed between the crushing cylinder 2 and the fixed cylinder 4. When there is too much waste sand in the crushing cylinder 2, the feeding device stops feeding, and the gravity sensor controls the electric telescopic rod 96 to extend, so that the second slider 97 pushes the movable rod 91 to move toward the fixed cylinder 4, so that the crushing cylinder 2 is displaced during the rotation process, thereby changing the distance between the first blade 81 and the second blade 82 and the umbrella blade 84. Therefore, the size of the waste sand produced after crushing is smaller than before, thereby enhancing the crushing effect. When the weight of the waste sand in the crushing cylinder 2 is too little, the feeding device continues to feed, the electric telescopic rod 96 is shortened, and the movable rod 91 pulls the crushing cylinder 2 to reset, so that the waste sand can quickly fall from the screen 83 under the reciprocating cycle.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An energy-saving electric waste sand crushing and grinding machine, comprising a base (1) and a fixed cylinder (4), a support seat (5) being fixedly connected between the bottom of the fixed cylinder (4) and the top of the base (1), a crushing cylinder (2) being arranged in the fixed cylinder (4), a driving mechanism (6) being arranged at one end of the crushing cylinder (2), the driving mechanism (6) comprising a driving shaft (62) penetrating the crushing cylinder (2), a first crushing mechanism (7) being arranged on the side wall of the crushing cylinder (2), characterized in that: A second crushing mechanism (8) is provided between the crushing cylinder (2) and the fixed cylinder (4), and an adjusting mechanism (9) is provided at one end of the crushing cylinder (2) away from the driving mechanism (6); A driving mechanism (6) is configured to drive the crushing drum (2) to rotate by rotating a driving shaft (62), thereby providing power for the first crushing mechanism (7) and the second crushing mechanism (8); The first crushing mechanism (7) is configured to cause the foundry waste sand entering the crushing cylinder (2) to be impacted during rotation under the action of the driving mechanism (6), thereby preliminarily screening and crushing the foundry waste sand; A second crushing mechanism (8) is configured to further crush and grind the preliminarily treated foundry waste sand through the cooperation between the rotating crushing cylinder (2) and the fixed fixing cylinder (4); The adjusting mechanism (9) is configured to adjust the position of the crushing drum (2) according to the weight of the waste foundry sand in the crushing drum (2) during the crushing process of the equipment, thereby changing the crushing effect of the second crushing mechanism (8).

2. The energy-saving electric waste sand crushing and grinding machine according to claim 1 is characterized in that: One end of the crushing cylinder (2) is fixedly connected to a connecting plate (21), and the end of the crushing cylinder (2) away from the connecting plate (21) is fixedly connected to a feed hopper (3). The inner wall of the feed hopper (3) is fixedly connected to a fixing plate (31), and the fixing plate (31) and the connecting plate (21) are arranged in parallel. A discharge port (51) is provided on one side of the support seat (5).

3. The energy-saving electric waste sand crushing and grinding machine according to claim 2 is characterized in that: The driving mechanism (6) further comprises an inner gear ring (63) fixedly connected to the connecting plate (21) and the fixed plate (31) respectively; a fixed tooth (64) is fixedly connected to the outer wall of the driving shaft (62); the fixed tooth (64) is meshed with the inner gear ring (63); a driving motor (61) is arranged at one end of the crushing barrel (2) close to the connecting plate (21); and an output end of the driving motor (61) is fixedly connected to the driving shaft (62).

4. The energy-saving electric waste sand crushing and grinding machine according to claim 1 is characterized in that: The first crushing mechanism (7) comprises a feed chute (71) evenly arranged on the side wall of the crushing cylinder (2), a fixing nail (72) being fixedly connected inside the feed chute (71), and a tip of the fixing nail (72) facing the inside of the crushing cylinder (2).

5. The energy-saving electric waste sand crushing and grinding machine according to claim 1 is characterized in that: The second crushing mechanism (8) comprises a first blade (81) fixedly connected to the outer wall of the crushing cylinder (2); a screen (83) is fixedly connected to the bottom of the fixed cylinder (4); two groups of second blades (82) are respectively arranged on both sides of the screen (83); the second blades (82) are fixedly connected to the inner wall of the fixed cylinder (4); a group of umbrella-shaped blades (84) is fixedly connected to the top of the screen (83); the blade gap of the second blade (82) is the same as the blade gap of the umbrella-shaped blade (84); and the second blade (82) and the umbrella-shaped blade (84) are staggered with the first blade (81).

6. The energy-saving electric waste sand crushing and grinding machine according to claim 4 is characterized in that: The diameter of the crushing cylinder (2) is smaller than the diameter of the fixing cylinder (4), the distance between the two fixing nails (72) is larger than the distance between the two umbrella-shaped blades (84), and the distance between the two umbrella-shaped blades (84) is larger than the mesh size of the screen (83).

7. The energy-saving electric waste sand crushing and grinding machine according to claim 2 is characterized in that: The adjustment mechanism (9) comprises a movable rod (91) rotatably connected to the fixed plate (31), a bearing (92) is provided between the movable rod (91) and the fixed plate (31), and one end of the movable rod (91) away from the fixed plate (31) is fixedly connected to a first sliding block (93).

8. The energy-saving electric waste sand crushing and grinding machine according to claim 7 is characterized in that: The top of the base (1) is fixedly connected to a fixed seat (94), a second slide groove (99) is provided on a side of the fixed seat (94) close to the movable rod (91), a movable groove (95) is provided inside the upper end of the fixed seat (94), an electric telescopic rod (96) is fixedly connected to the bottom of the movable groove (95), a second slider (97) is fixedly connected to the top of the electric telescopic rod (96), a first slide groove (98) is provided on the top of the second slider (97), and a gravity sensor is fixedly installed on the outer wall of the connecting plate (21), and the gravity sensor is electrically connected to the electric telescopic rod (96).

9. The energy-saving electric waste sand crushing and grinding machine according to claim 8 is characterized in that: The first sliding block (93) is slidably connected to the first sliding groove (98), and the contact surfaces of the movable rod (91) and the second sliding block (97) are both inclined surfaces.

10. The energy-saving electric waste sand crushing and grinding machine according to claim 3 is characterized in that: The driving motor (61) and the fixing seat (94) are respectively located at two ends of the crushing barrel (2).

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