Shaking screen

Abstract

The utility model discloses a shaking screen which comprises a machine frame, a screen body suspended in the machine frame, a trumpet-shaped screen mesh fixedly arranged in the large radial direction in the screen body and a diagonal draw bar arranged on the screen body. A second discharging port and a third discharging port are formed in the outer wall of the screen body, a second discharging hopper is fixedly connected to the position, where the second discharging port is located, of the screen body, a third discharging hopper is fixedly connected to the position, where the third discharging port is located, of the screen body, a first discharging port is formed in the center of the screen mesh, and a second discharging port is formed in the center of the screen mesh. A short pipe is fixedly arranged in the first discharging port of the screen, and a first discharging hopper is fixedly connected to the position, where the short pipe is located, of the bottom of the screen body. When the screen body shakes, coffee bean kernels with large specific gravity are discharged through the first discharging hopper, and non-hulled coffee beans with small specific gravity are discharged from the third discharging hopper, so that the coffee bean kernels, the non-hulled coffee beans and coffee bean shell chippings can be separated at a time, the coffee bean kernel sorting efficiency is improved, and the purity of the coffee bean kernels is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of food machinery, in particular to a shaking screen. Background Art

[0002] A shaking screen is a device used in the food industry to separate impurities from finished products, or to separate materials of different particle sizes. However, after the fruit is shelled, the final product is the shelled fruit. For example, in the process of shelling coffee beans, the raw material is shelled coffee beans, and the finished product is shelled coffee bean kernels. After the coffee beans are crushed, they are first sorted, and the large coffee bean shells are blown away by the fan. Since coffee beans cannot be 100% crushed when they are crushed, the semi-finished products left after wind sorting include coffee bean kernels, shelled coffee beans, some finely crushed coffee bean shells, and some other impurities. If the current shaking screen is used, only the finely crushed coffee bean shells and impurities can be screened out through the screen, and coffee bean kernels and some unshelled coffee beans will be left in the end. These two products need to be further sorted to separate the coffee bean kernels from the unshelled coffee beans. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a shaking screen, which is used to solve the problem that the current shaking screen cannot separate unshelled coffee beans, coffee bean kernels, finely crushed coffee bean shells and impurities at one time.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A shaking screen comprises a frame, a screen body suspended in the frame, a trumpet-shaped screen fixedly arranged on a large radial direction in the screen body, and an inclined rod arranged on the screen body; the lower end of the inclined rod is fixedly connected to the outer edge of the screen body, the screen body is a cylindrical shape with a bottom plugged, the screen is located in the middle of the screen body, a second discharge port and a third discharge port are provided on the outer wall of the screen body, the second discharge port is lower than the screen, and the third discharge port is higher than the screen, the screen body is fixedly connected to a second discharge hopper at the position of the second discharge port, the screen body is fixedly connected to a third discharge hopper at the position of the third discharge port, a first discharge port is provided in the center of the screen, a short tube is fixedly arranged on the screen in the first discharge port, the short tube passes through and is fixedly connected to the bottom of the screen body, and the bottom of the screen body is fixedly connected to the first discharge hopper at the position of the short tube.

[0006] Furthermore, there are at least two inclined tie rods distributed along the circumferential direction of the screen body, the top ends of the inclined tie rods are fixed to each other, and a universal joint is connected between the top ends of the inclined tie rods and the frame.

[0007] Furthermore, a tie rod is radially arranged on the top of the screen body, a bearing seat is arranged at the center of the top of the screen body, the screen body and the bearing seat are respectively fixedly connected to the corresponding end of the tie rod, and a power mechanism for driving the bearing seat to shake is also arranged on the frame.

[0008] Furthermore, the power mechanism includes a crossbeam arranged above the screen body and fixedly connected to the frame, a bearing box is fixedly arranged on the crossbeam, a vertical swing shaft is arranged in the bearing box, the upper axis and the lower axis of the swing shaft are staggered, the upper part of the swing shaft is rotatably connected to the bearing box, the lower part of the swing shaft is rotatably connected to the bearing seat, and a first motor is fixedly connected to the crossbeam and is transmission-connected to the upper part of the swing shaft.

[0009] Furthermore, a movable tube is nested in the short tube, an intermediate plate is fixedly connected in the movable tube, a vertical screw is passed through and fixedly connected to the intermediate plate, a handwheel is fixedly connected to the top of the screw, and a fixed plate is fixedly connected to the bottom of the screen body, the screw is threadedly connected to the fixed plate, and both the intermediate plate and the fixed plate are provided with holes for allowing materials entering the movable tube to pass through.

[0010] Furthermore, the first motor and the swing shaft are connected by a V-belt transmission.

[0011] Furthermore, the screen body is provided with plug plates outside the third discharge port and outside the second discharge port.

[0012] The positive effects of the utility model are:

[0013] 1. The utility model is provided with a sieve cylinder and a sieve mesh, and the sieve cylinder is provided with a first discharge hopper, a second discharge hopper and a third discharge hopper. The coffee bean kernels, shelled coffee beans and coffee bean shell debris falling from the discharge cylinder fall onto the sieve mesh together. The sieve body shakes, and the coffee bean kernels with a larger specific gravity are discharged through the first discharge hopper, and the unshelled coffee beans with a smaller specific gravity are discharged from the third discharge hopper, so that the coffee bean kernels, the unshelled coffee beans and the coffee bean shell debris can be separated, thereby improving the efficiency of coffee bean kernel sorting and making the coffee bean kernels more pure.

[0014] 2. A height-adjustable movable tube is nested in the short tube in the center of the screen. By adjusting the height of the movable tube, the height of the movable tube above the screen can be adjusted, and then the thickness of the material on the screen can be adjusted, thereby increasing the screening time and improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a side view of embodiments 1 and 2;

[0016] Figure 2 yes Figure 1 A partial enlarged view of the middle I part;

[0017] Figure 3 is a schematic structural diagram of Example 3;

[0018] Figure 4 yes Figure 3 A partial enlarged view of the middle III section;

[0019] In the figure:

[0020] 1. Screen body; 2. First motor; 3. Bearing box; 4. Swing shaft; 5. Diagonal tie rod; 6. Universal joint; 13. Frame; 16. Drop barrel; 23. Bearing seat; 24. Horizontal tie rod; 25. First discharge hopper; 26. Screen; 27. Second discharge hopper; 28. Third discharge hopper; 31. Short tube; 32. Movable tube; 33. Screw; 34. Fixed plate; 35. Middle plate; 36. Hand wheel. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figure 1 and Figure 2 As shown, a shaking screen includes a frame 13 connected by profiles, a screen body 1 suspended in the frame 13, a trumpet-shaped screen 26 fixedly arranged in the large radial direction in the screen body 1, and a diagonal tie rod 5 arranged on the screen body 1. The diagonal tie rods 5 are four distributed along the circumferential direction of the edge of the screen body 1, and the diagonal tie rods 5 are all fixedly connected to the screen body 1. The top ends of the diagonal tie rods 5 are fixed to each other, and a universal joint 6 is connected between the top ends of the diagonal tie rods 5 and the frame 13. The universal joint 6 is located on the center line of the screen body 1, and a rubber pad for shock absorption is provided between the universal joint 6 and the diagonal tie rods 5.

[0023] The sieve body 1 is cylindrical with a blocked bottom, the sieve mesh 26 is located in the middle of the sieve body 1, and a second discharge port and a third discharge port are provided on the outer wall of the sieve body 1, the second discharge port is lower than the sieve mesh 26, and the third discharge port is higher than the sieve mesh 26, the sieve body 1 is fixedly connected with a second discharge hopper 27 at the position of the second discharge port, and the sieve body 1 is fixedly connected with a third discharge hopper 28 at the position of the third discharge port, a first discharge port is provided in the center of the sieve mesh 26, a short tube 31 is fixedly provided in the first discharge port below the sieve mesh 26, the short tube 31 is fixedly connected to the bottom of the sieve body 1 through, and the first discharge hopper 25 is fixedly connected to the bottom of the sieve body 1 at the position of the short tube 31.

[0024] A tie rod 24 is radially arranged on the top of the screen body 1, and the tie rods 24 are three evenly distributed in the circumferential direction. A bearing seat 23 is arranged at the center of the top of the screen body 1. The screen body 1 and the bearing seat 23 are respectively fixedly connected to one end corresponding to the tie rod 24, and a power mechanism for driving the bearing seat 23 to shake is also arranged on the frame 13.

[0025] The coffee bean kernels, shelled coffee beans, coffee bean shell debris and impurities falling from the drop barrel 16 above the edge of the sieve body 1 fall onto the screen 26. The power mechanism drives the sieve body 1 and the screen 26 to shake together. The coffee bean shell debris and some fine particles of impurities fall downward after passing through the screen 26. Then, under the shaking action of the sieve body 1, they gather at the edge of the inner wall of the sieve body 1. After the plug plate set on the second discharge port is opened, they are discharged from the second discharge hopper 27. The coffee bean kernels with a larger specific gravity fall into the first discharge hopper 25 through the first discharge port in the center of the screen 26 and are discharged. Since the unshelled coffee beans have a smaller specific gravity, they gather around the screen 26 under the shaking of the screen 26. Then, after the plug plate set on the third discharge port is opened, they are discharged from the third discharge hopper 28. The unshelled coffee beans can be shelled again.

[0026] Therefore, the shaking screen can separate the coffee bean kernels, unshelled coffee beans, coffee bean shell fragments and impurities at one time, thereby improving the efficiency of coffee bean kernel sorting and making the coffee bean kernels higher in purity.

[0027] Example 2

[0028] The difference between this embodiment and embodiment 1 is that:

[0029] The power mechanism includes a crossbeam arranged above the screen body 1 and fixedly connected to the frame 13, and the crossbeam passes between four inclined tie rods 5. A vertical bearing box 3 is fixedly arranged on the crossbeam, and a vertical swing shaft 4 is arranged in the bearing box 3. The axis of the upper part of the swing shaft 4 is parallel to the axis of the lower part and staggered in the horizontal direction. The upper part of the swing shaft 4 is rotatably connected to the bearing box 3, and the lower part of the swing shaft 4 is rotatably connected to the bearing seat 23. The crossbeam is fixedly connected to a first motor 2 connected to the upper part of the swing shaft 4 through a V-belt transmission.

[0030] When the first motor 2 rotates, it drives the upper part of the swing shaft 4 to rotate. Since the upper and lower axes of the swing shaft 4 are staggered, and the bearing box 3 rotatably connected to the upper part of the swing shaft 4 is fixedly connected to the frame 13, the lower part of the swing shaft 4 will rotate around the upper part of the swing shaft 4, thereby driving the bearing seat 23, the screen body 1 and the screen mesh 26 to shake along a circular trajectory in the horizontal plane with the upper part of the swing shaft 4 as the center. The universal joint 6 can compensate for the change in the horizontal position of the screen body 1 while bearing the weight of the shaking screen.

[0031] Example 3

[0032] Combination Figure 3 and Figure 4 As shown, the difference between this embodiment and embodiment 3 is that:

[0033] The short tube 31 is embedded with a movable tube 32, a circular middle plate 35 is fixedly connected in the movable tube 32, a vertical lead screw 33 is fixedly connected through the middle plate 35, a circular fixed plate 34 is welded to the bottom of the sieve body 1, the lead screw 33 is threadedly connected to the fixed plate 34, the middle plate 35 and the fixed plate 34 are both provided with holes for coffee beans entering the movable tube 32 to pass through, and a hand wheel 36 is fixedly connected to the top of the lead screw 33. The lead screw 33 is screwed with two nuts on the upper and lower sides of the middle plate 35, and the lead screw 33 is fixedly connected to the middle plate 35 through the nuts. A nut is welded at the center of the fixed plate 34, and the lead screw 33 is threadedly connected to the fixed plate 34 through the nut.

[0034] When the hand wheel 36 is turned, the lead screw 33 is driven to rotate. The lead screw 33 drives the middle plate 35 and the movable tube 32 to move up and down while rotating, so that the height of the movable tube 32 above the screen 26 can be adjusted, and then the thickness of the material on the screen 26 can be adjusted, thereby increasing the screening time and improving the screening effect.

[0035] The above-mentioned embodiments describe content in a relatively detailed and specific manner, and express the preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, and their purpose is to enable technicians in this field to understand the content of the present utility model and implement it accordingly, but they are not limited to the present utility model. The patent scope of the present utility model cannot be limited only by this embodiment, that is, any equivalent changes or modifications made to the spirit disclosed by the present utility model, for researchers or technicians in this field, without departing from the structure of the present utility model, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present utility model.

Claims

1. A shaking screen, characterized in that: The invention comprises a frame (13), a screen body (1) suspended in the frame (13), a trumpet-shaped screen (26) fixedly arranged in the screen body (1) on a large radial direction, and an inclined rod (5) arranged on the screen body (1); the lower end of the inclined rod (5) is fixedly connected to the outer edge of the screen body (1); the screen body (1) is a cylindrical shape with a bottom blocked; the screen (26) is located in the middle of the screen body (1); a second discharge port and a third discharge port are opened on the outer wall of the screen body (1); the second discharge port is lower than the screen (26) and the third discharge port is The material port is higher than the screen (26); the screen body (1) is fixedly connected to a second material discharge hopper (27) at the location of the second material discharge port; the screen body (1) is fixedly connected to a third material discharge hopper (28) at the location of the third material discharge port; a first material discharge port is opened at the center of the screen (26); a short tube (31) is fixedly arranged in the first material discharge port of the screen (26); the short tube (31) penetrates and is fixedly connected to the bottom of the screen body (1); and the bottom of the screen body (1) is fixedly connected to the first material discharge hopper (25) at the location of the short tube (31).

2. A shaking screen according to claim 1, characterized in that: The inclined rods (5) are at least two and are distributed along the circumferential direction of the screen body (1). The top ends of the inclined rods (5) are fixed to each other, and a universal joint (6) is connected between the top ends of the inclined rods (5) and the frame (13).

3. A shaking screen according to claim 1, characterized in that: A tie rod (24) is radially arranged on the top of the screen body (1), a bearing seat (23) is arranged at the center of the top of the screen body (1), the screen body (1) and the bearing seat (23) are respectively fixedly connected to one end corresponding to the tie rod (24), and the frame (13) is also provided with a power mechanism for driving the bearing seat (23) to shake.

4. A shaking screen according to claim 3, characterized in that: The power mechanism comprises a crossbeam arranged above the screen body (1) and fixedly connected to the frame (13); a bearing box (3) is fixedly arranged on the crossbeam; a vertical swing shaft (4) is arranged in the bearing box (3); the axis of the upper part of the swing shaft (4) and the axis of the lower part are staggered; the upper part of the swing shaft (4) is rotatably connected to the bearing box (3); the lower part of the swing shaft (4) is rotatably connected to the bearing seat (23); and a first motor (2) is fixedly connected to the crossbeam and is transmission-connected to the upper part of the swing shaft (4).

5. A shaking screen according to claim 1, characterized in that: A movable tube (32) is nested in the short tube (31), an intermediate plate (35) is fixedly connected to the movable tube (32), a vertical lead screw (33) is passed through and fixedly connected to the intermediate plate (35), a hand wheel (36) is fixedly connected to the top of the lead screw (33), a fixed plate (34) is fixedly connected to the bottom of the screen body (1), the lead screw (33) is threadedly connected to the fixed plate (34), and holes are provided on the intermediate plate (35) and the fixed plate (34) for allowing materials entering the movable tube (32) to pass through.

6. A shaking screen according to claim 4, characterized in that: The first motor (2) and the swing shaft (4) are connected via a V-belt transmission.

7. A shaking screen according to claim 1, characterized in that: The screen body (1) is provided with plug plates outside the third discharge port and outside the second discharge port.

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