Sand treatment device for well lid casting

Abstract

The utility model relates to the technical field of sand treatment equipment, and provides a sand treatment device for well lid casting, which comprises a frame, a screen box is arranged on the inner side of the frame, a feeding frame is fixedly connected to the outer surface of the upper end of the screen box, and a transmission structure is arranged between the frame and the feeding frame. A dustproof structure is arranged on the inner side of a feeding port in the upper end of the feeding frame, the transmission structure comprises a variable frequency motor fixedly connected to the outer surface of the frame, the output end of the variable frequency motor is fixedly connected with a lower shaft rod, the outer surface of the lower shaft rod is fixedly connected with a lower belt wheel, and an upper shaft rod is arranged on the outer surface of the feeding frame in a penetrating mode. By means of the technical scheme, the problems that due to the fact that feeding is directly conducted through a feeding port of an existing sand treatment device for well lid casting, dust attached to sand is prone to gushing outwards from the feeding port, environmental protection is not enough, meanwhile, independent crushing roller motors and vibration motors are generally needed, and the equipment manufacturing cost can be increased are solved, and the sand treatment device for well lid casting solves the problems that feeding is directly conducted through the feeding port. And a better use prospect can be brought.

Description

Technical Field

[0001] The utility model relates to the technical field of sand treatment equipment, and specifically, to a sand treatment device for manhole cover casting. Background Art

[0002] Manhole covers are usually made by mixing quartz sand with other raw materials. The sand used for making manhole covers usually needs to be screened to meet the production requirements. By screening, suitable sand can be selected for the casting production of manhole covers.

[0003] A prior patent discloses a sand treatment machine for manhole cover casting (authorization publication number: CN206882699U). This treatment machine solves the problem of poor screening effect of the sand treatment machine in the prior art. It can automatically collect sand, and at the same time, it can crush larger sand and can position and fix sand reservoirs of different sizes.

[0004] However, the above patent directly feeds materials at the feeding port, which easily causes the dust adhered to the sand to pour out from the feeding port, and it is not environmentally friendly. At the same time, the existing sand treatment and screening devices usually need to be equipped with a separate crushing roller motor and a vibration motor, which will increase the equipment cost. For this reason, we propose a sand treatment device for manhole cover casting. Summary of the Utility Model

[0005] The utility model proposes a sand treatment device for manhole cover casting, which solves the problems in the related art that the feeding port of the existing sand treatment device for manhole cover casting directly feeds materials, which easily causes the dust adhered to the sand to pour out from the feeding port, and it is not environmentally friendly. At the same time, it usually needs to be equipped with a separate crushing roller motor and a vibration motor, which will increase the equipment cost.

[0006] The technical solution of the utility model is as follows:

[0007] A sand treatment device for manhole cover casting includes a frame. A screening box is arranged inside the frame. A feeding frame is fixedly connected to the outer surface of the upper end of the screening box. A transmission structure is arranged between the frame and the feeding frame. A dust-proof structure is arranged inside the feeding port at the upper end of the feeding frame.

[0008] The transmission structure includes a variable-frequency motor fixedly connected to the outer surface of the frame. The output end of the variable-frequency motor is fixedly connected to a lower shaft rod. A lower belt pulley is fixedly connected to the outer surface of the lower shaft rod. An upper shaft rod penetrates through the outer surface of the feeding frame. An upper belt pulley is fixedly connected to the outer surface of the upper shaft rod. A connecting belt is wound between the upper belt pulley and the lower belt pulley. A convex strip is fixedly connected to the outer surface of the lower shaft rod. A crushing roller is fixedly connected to the outer surface of the upper shaft rod.

[0009] As a further technical solution of the present utility model, a connecting spring is provided between the sieve box and the frame. An outlet is provided on one side of the frame, and the sieve box is obliquely arranged.

[0010] As a further technical solution of the present utility model, a movable plate is rotatably connected to the inner side of the feeding frame. A guiding spring is provided between the movable plate and the inner wall of the feeding frame, and a guiding rod is provided on the outer surface of the inner wall of the feeding frame corresponding to the axis center of the guiding spring.

[0011] As a further technical solution of the present utility model, the output end of the variable-frequency motor is fixedly connected to one end of the lower shaft rod, and the other end of the lower shaft rod is rotatably connected to the frame through a bearing.

[0012] As a further technical solution of the present utility model, the lower pulley drives the upper pulley to rotate through a connecting belt. The upper shaft rod is parallel to the lower shaft rod, and the upper shaft rod is driven to rotate by the upper pulley.

[0013] As a further technical solution of the present utility model, the maximum distance between the convex strip and the lower shaft rod is greater than the minimum distance between the lower shaft rod and the sieve box, and the exceeded part is 0.5 - 2 cm. The lower shaft rod rotates to drive the convex strip to beat the sieve box to generate vibration. The hole through which the upper shaft rod penetrates the feeding frame is slightly larger than the diameter of the upper shaft rod.

[0014] As a further technical solution of the present utility model, the number of the movable plates is two groups and they are symmetrically distributed. The movable plates are rotatably connected to the feeding frame through hinges. The guiding spring is arc-shaped, and the two ends of the arc of the guiding spring are respectively fixedly connected to the movable plate and the feeding frame.

[0015] As a further technical solution of the present utility model, the rotating direction of the movable plate is the same as the arc direction of the guiding spring. The guiding rod is only fixedly connected to the inner wall of the feeding frame at the lower end. The guiding springs and guiding rods provided between the movable plate and the feeding frame are all three groups and are all distributed in a "one"-shaped array.

[0016] The working principle and beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, through the cooperation of the transmission structure and the connecting spring, during the process that the variable-frequency motor drives the upper shaft rod to make the crushing roller crush the sand and gravel, the sieve box can be made to generate certain vibration at the same time, so as to facilitate the sieving process, reduce the use of the variable-frequency motor, and reduce the cost of the equipment. Description of the Drawings

[0018] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments.

[0019] Figure 1 Structural schematic diagram of the present utility model;

[0020] Figure 2 The present utility model Figure 1 Structural schematic diagram from another perspective;

[0021] Figure 3 Partial structural schematic diagram at the transmission structure of the present utility model;

[0022] Figure 4 Partial structural schematic diagram of the dust-proof structure of the present utility model after being cut open.

[0023] In the figure: 1, frame; 2, sieve box; 3, feeding frame; 4, transmission structure; 41, variable-frequency motor; 42, lower shaft rod; 43, lower belt pulley; 44, upper shaft rod; 45, upper belt pulley; 46, connecting belt; 47, rib; 48, crushing roller; 5, dust-proof structure; 51, movable plate; 52, guiding spring; 53, guiding rod; 6, connecting spring; 7, discharge port. Specific implementation manners

[0024] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 - 2 shown, this embodiment proposes a sand treatment device for manhole cover casting, including a frame 1. A sieve box 2 is arranged inside the frame 1. A feeding frame 3 is fixedly connected to the outer surface of the upper end of the sieve box 2. A transmission structure 4 is arranged between the frame 1 and the feeding frame 3. A dust-proof structure 5 is arranged inside the upper feeding port of the feeding frame 3. A connecting spring 6 is arranged between the sieve box 2 and the frame 1. A discharge port 7 is arranged on one side of the frame 1. The sieve box 2 is obliquely arranged.

[0027] Embodiment 2

[0028] As Figure 3As shown in the figure, on the basis of Embodiment 1, it is further proposed that the transmission structure 4 includes a variable-frequency motor 41 fixedly connected to the outer surface of the frame 1. The output end of the variable-frequency motor 41 is fixedly connected to a lower shaft rod 42. A lower pulley 43 is fixedly connected to the outer surface of the lower shaft rod 42. An upper shaft rod 44 penetrates through the outer surface of the feeding frame 3. An upper pulley 45 is fixedly connected to the outer surface of the upper shaft rod 44. A connecting belt 46 is wound between the upper pulley 45 and the lower pulley 43. A convex strip 47 is fixedly connected to the outer surface of the lower shaft rod 42. A crushing roller 48 is fixedly connected to the outer surface of the upper shaft rod 44. The output end of the variable-frequency motor 41 is fixedly connected to one end of the lower shaft rod 42. The other end of the lower shaft rod 42 is rotatably connected to the frame 1 through a bearing. The lower pulley 43 drives the upper pulley 45 to rotate through the connecting belt 46. The upper shaft rod 44 is parallel to the lower shaft rod 42. The upper shaft rod 44 is driven to rotate by the upper pulley 45. The maximum distance between the convex strip 47 and the lower shaft rod 42 is greater than the minimum distance between the lower shaft rod 42 and the screening box 2, and the exceeded part is 0.5 - 2 cm. The rotation of the lower shaft rod 42 drives the convex strip 47 to beat the screening box 2 to generate vibration. The hole of the feeding frame 3 through which the upper shaft rod 44 passes is slightly larger than the diameter of the upper shaft rod 44. During use, when the variable-frequency motor 41 drives the upper shaft rod 44 to make the crushing roller 48 crush the sand and gravel, the screening box 2 can be vibrated at the same time, so that the screening process can be facilitated, the use of the variable-frequency motor 41 can be reduced, and the cost of the equipment can be reduced at the same time.

[0029] Embodiment 3

[0030] As Figure 4 shown in the figure, on the basis of Embodiment 2, it is further proposed that a movable plate 51 is rotatably connected to the inner side of the feeding frame 3. A guiding spring 52 is arranged between the movable plate 51 and the inner wall of the feeding frame 3. A guiding rod 53 is arranged on the outer surface of the inner wall of the feeding frame 3 corresponding to the axis of the guiding spring 52. The number of the movable plates 51 is two groups and they are symmetrically distributed. The movable plate 51 is rotatably connected to the feeding frame 3 through a hinge. The guiding spring 52 is arc-shaped, and the two end heads of the arc of the guiding spring 52 are respectively fixedly connected to the movable plate 51 and the feeding frame 3. The rotation direction of the movable plate 51 is the same as the arc direction of the guiding spring 52. The guiding rod 53 is only fixedly connected to the inner wall of the feeding frame 3 at the lower end. The guiding springs 52 and the guiding rods 53 arranged between the movable plate 51 and the feeding frame 3 are all three groups and are distributed in a "one"-shaped array. During the use process, the dust gushing out from the upper opening of the feeding frame 3 can be greatly reduced, the dust escape can be reduced, and at the same time, the amount of dust inhaled by the workers operating the equipment can be reduced, which is more environmentally friendly and healthy.

[0031] In summary, during use, the user can start the device, and then pour the sand and gravel raw materials from the upper end of the movable plate 51. Under the action of gravity, the sand and gravel will squeeze the movable plate 51 to cause it to tilt. Eventually, the two symmetrical movable plates 51 will squeeze the guiding spring 52 downward along the middle of the feeding frame 3, and finally be supported and stabilized by the guiding rod 53. At this time, the largest opening is formed between the two movable plates 51, so that the sand and gravel fall into the interior of the feeding frame 3 through the opening formed by the two movable plates 51 and the feeding frame 3. Driven by the variable-frequency motor 41, the lower shaft rod 42 together with the lower belt pulley 43 rotates. Through the cooperation of the connecting belt 46, the lower belt pulley 43 drives the upper belt pulley 45 to rotate. The upper belt pulley 45 drives the upper shaft rod 44 to rotate, and the upper shaft rod 44 drives the crushing roller 48 to crush the sand and gravel. After a batch of sand and gravel falls through the opening formed by the two movable plates 51 and the feeding frame 3, under the reaction force of the guiding spring 52, it rotates upward to push the movable plate 51 upward, so that the opening at the upper end of the feeding frame 3 is in a closed state. At this time, when the sand and gravel are crushed by the crushing roller 48, it can greatly reduce the dust generated when the crushing roller 48 in the feeding frame 3 crushes the sand and gravel from escaping to the outside of the feeding frame 3, and the dust-proof effect is good, which not only meets the environmental protection requirements of dust prevention, but also avoids the safety hazards when workers inhale a large amount of dust.

[0032] It should be noted that during the process of the variable-frequency motor 41 rotating to make the crushing roller 48 crush the sand and gravel, the lower shaft rod 42 rotates simultaneously. The lower shaft rod 42 will drive the convex strip 47 to rotate together. When the convex strip 47 rotates to a position close to the screening box 2, the convex strip 47 will beat the screening box 2, so that the sand and gravel in the screening box 2 can be screened. In this way, the crushing and vibration share a set of variable-frequency motor 41, which can reduce the consumption of driving motors and save the construction cost.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sand processing device for manhole cover casting, characterized in that: It comprises a frame (1), a screen box (2) is arranged on the inner side of the frame (1), a feed frame (3) is fixedly connected to the outer surface of the upper end of the screen box (2), a transmission structure (4) is arranged between the frame (1) and the feed frame (3), and a dustproof structure (5) is arranged on the inner side of the upper feed opening of the feed frame (3); The transmission structure (4) comprises a variable frequency motor (41) fixedly connected to the outer surface of the frame (1); the output end of the variable frequency motor (41) is fixedly connected to a lower shaft (42); the outer surface of the lower shaft (42) is fixedly connected to a lower belt pulley (43); an upper shaft (44) is provided through the outer surface of the feed frame (3); the outer surface of the upper shaft (44) is fixedly connected to an upper belt pulley (45); a connecting belt (46) is wound between the upper belt pulley (45) and the lower belt pulley (43); the outer surface of the lower shaft (42) is fixedly connected to a convex strip (47); and the outer surface of the upper shaft (44) is fixedly connected to a crushing roller (48).

2. A sand processing device for manhole cover casting according to claim 1, characterized in that: A connecting spring (6) is provided between the screen box (2) and the frame (1), a discharge port (7) is provided on one side of the frame (1), and the screen box (2) is arranged obliquely.

3. The sand processing device for manhole cover casting according to claim 1 is characterized in that: A movable plate (51) is rotatably connected to the inner side of the feed frame (3); a guide spring (52) is provided between the movable plate (51) and the inner wall of the feed frame (3); and a guide rod (53) is provided on the outer surface of the inner wall of the feed frame (3) at a position corresponding to the axis of the guide spring (52).

4. The sand processing device for manhole cover casting according to claim 1 is characterized in that: The output end of the variable frequency motor (41) is fixedly connected to one end of the lower shaft rod (42), and the other end of the lower shaft rod (42) is rotatably connected to the frame (1) via a bearing.

5. The sand processing device for manhole cover casting according to claim 4 is characterized in that: The lower belt pulley (43) drives the upper belt pulley (45) to rotate via a connecting belt (46); the upper shaft rod (44) is parallel to the lower shaft rod (42), and the upper shaft rod (44) is driven to rotate via the upper belt pulley (45).

6. A sand processing device for manhole cover casting according to claim 5, characterized in that: The maximum spacing between the convex strip (47) and the lower shaft rod (42) is greater than the minimum spacing between the lower shaft rod (42) and the screen box (2), and the greater spacing is 0.5 to 2 cm. The rotation of the lower shaft rod (42) drives the convex strip (47) to beat the screen box (2) to generate vibration. The hole through which the upper shaft rod (44) passes through the feed frame (3) is slightly larger than the diameter of the upper shaft rod (44).

7. The sand processing device for manhole cover casting according to claim 3 is characterized in that: The movable plates (51) are provided in two groups and are symmetrically distributed. The movable plates (51) are rotatably connected to the feed frame (3) via hinges. The guide spring (52) is arranged in an arc shape, and the two end ends of the arc of the guide spring (52) are respectively fixedly connected to the movable plates (51) and the feed frame (3).

8. The sand processing device for manhole cover casting according to claim 7, characterized in that: The direction in which the movable plate (51) rotates is the same as the direction of the arc of the guide spring (52); only the lower end of the guide rod (53) is fixedly connected to the inner wall of the feed frame (3); the guide springs (52) and guide rods (53) provided between the movable plate (51) and the feed frame (3) are in three groups and are arranged in a straight line array.

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