Easy-to-adjust finished decorative diamond screening device

Abstract

The invention discloses a finished decorative diamond screening device easy to adjust, and belongs to the technical field of screening. Comprising a feeding hopper and a screening machine, the screening machine comprises a base, a screening disc fixing frame, a plurality of spring vibration pieces, a vibration motor, a plurality of layers of rectangular screening discs, a plurality of discharging grooves, a fixing structure and a circular screening disc, the multiple discharging grooves are vertically arranged side by side and staggered, and the rectangular screening discs are obliquely arranged downwards from front to back and provided with openings in the rear ends; the feeding hopper is located over the front portion of the rectangular sieve tray on the top layer, and the sieve mesh hole diameters of the rectangular sieve trays are reduced layer by layer from top to bottom. The feed hopper can be moved away from the front part of the screening machine; the circular sieve tray is positioned under the feed hopper, and the sieve mesh aperture of the circular sieve tray is greater than that of the rectangular sieve tray on the top layer; the sieve tray fixing frame is a rectangular groove and is obliquely arranged downwards from front to back, the front side of the sieve tray fixing frame is open, and the rear side of the sieve tray fixing frame is closed. The fixing structure is of a frame structure, can be adjusted up and down in the sieve tray fixing frame, can be taken out from the front side of the sieve tray fixing frame, and abuts against the upper sides of the left side and the right side of the rectangular sieve tray on the top layer.

Description

Technical Field

[0001] The invention belongs to the technical field of screening, and in particular relates to an easily adjustable finished product decorative diamond screening device. Background Art

[0002] After the diamond processing is completed, it is necessary to separate the broken diamonds, special-shaped diamonds or other specifications of diamonds through a screening device. In the prior art, the decorative diamonds can be screened by a square screen plate or a round screen plate.

[0003] For example, the patent with application number CN202023029340.7 discloses a swing-type water drill screening device, including a frame and a feed hopper at the front of the frame; it also includes a sieve plate fixing frame arranged in the front-to-back direction and capable of sliding back and forth on the frame, a multi-layer sieve plate arranged side by side up and down on the sieve plate fixing frame, a discharge trough below each layer of sieve plate, and a swing structure driving the sieve plate fixing frame to reciprocate back and forth; the sieve plate is a rectangular trough, the bottom of which is evenly distributed with sieve holes, which is arranged obliquely downward from front to back, a discharge port is arranged in the middle of its rear end, and two guide plates are arranged on the left and right sides of its rear part; the two guide plates gradually approach from front to back and are respectively located on the left and right sides of the discharge port; the discharge trough is arranged obliquely downward from front to back, and its front part is located directly below the corresponding discharge port and is arranged in the front-to-back direction; the sieve holes of the multi-layer sieve plate decrease layer by layer from top to bottom, the feed hopper is located directly above the front of the top sieve plate, and a receiving trough is arranged below the bottom sieve plate. This patent uses a rectangular sieve plate for screening.

[0004] For example, the patent with application number CN201921058327.9 discloses a finished water diamond grading screen, including a frame, a vertical vibrating plate directly above the frame, a horizontal vibrating plate directly above the vertical vibrating plate, and at least one group of grading structures on the horizontal vibrating plate, wherein the vertical vibrating plate and the horizontal vibrating plate are both horizontally arranged, and a vertical vibrating structure for vibrating in the vertical direction is provided between the vertical vibrating plate and the frame, and a horizontal vibrating structure for vibrating in the horizontal direction is provided between the horizontal vibrating plate and the vertical vibrating plate; the grading structure includes a plurality of sub-screening plates, a top plate, three flange fixing plates and a latch, the flange fixing plate is arranged in the vertical direction and its lower end is fixed on the horizontal vibrating plate, and the top plate is arranged horizontally and fixed on the top of the flange fixing plate , the latch is arranged in the vertical direction and its lower end is inserted into the horizontal vibration plate after passing through the top plate; the sub-screening plate is arranged horizontally, it is circular, its top end is protruding outward with a flange, and its bottom is evenly distributed with sieve holes; multiple sub-screening plates are arranged side by side from top to bottom, and the sieve holes thereon are gradually reduced; a feed port is arranged on the top plate and directly above the sub-screening plate; three flange fixing plates and a latch are arranged in a cross shape around the sub-screening plate, and the inner side of the flange fixing plate is provided with multiple notches matching the flange from top to bottom; the flange is embedded in the corresponding notch, and the inner side of the latch rests on the flange to fix the sub-screening plate. This patent uses a circular sieve plate for screening.

[0005] The applicant found that there are many specifications of decorative diamonds, and the size (measured in rough beads) ranges from 1 to 12 mm. For decorative diamonds of different specifications, the number of screens and / or the screen apertures need to be changed. The existing technology is not convenient for adjusting the number of screens and the apertures. Summary of the invention

[0006] In order to solve the above problems, an embodiment of the present invention provides an easily adjustable finished product decorative diamond screening device, which is convenient for quick replacement and adjustment of the number of screens. The technical solution is as follows: The embodiment of the present invention provides an easily adjustable finished decorative diamond screening device, which includes a feed hopper 1 and a screening machine, wherein the screening machine includes a base 4, a sieve plate fixing frame 6 directly above the base 4, a plurality of spring vibrating members 5 between the sieve plate fixing frame 6 and the base 4, a vibration motor 7 at the bottom of the sieve plate fixing frame 6, a plurality of multi-layer rectangular sieve plates 8 arranged side by side in the sieve plate fixing frame 6, and a plurality of discharge troughs 9 at the rear end of the sieve plate fixing frame 6 and corresponding to the rectangular sieve plates 8 one by one, wherein the plurality of discharge troughs 9 are arranged side by side and staggered in the upper and lower parts, the rectangular sieve plates 8 are arranged obliquely downward from front to back and the rear end thereof is open, the feed hopper 1 is located directly above the front part of the top rectangular sieve plate 8, and the mesh aperture of the rectangular sieve plate 8 decreases layer by layer from top to bottom; the screening machine also includes a fixing structure for fixing the rectangular sieve plate 8 10 and a circular sieve plate 11 detachably arranged at the front of the fixed structure 10; the feed hopper 1 can be removed from the front of the screening machine, and the number of layers of the rectangular sieve plate 8 is less than or equal to the number of discharge troughs 9; the circular sieve plate 11 is located directly below the feed hopper 1 and its sieve mesh aperture is larger than the sieve mesh aperture of the top rectangular sieve plate 8; the sieve plate fixing frame 6 is a rectangular groove that cooperates with the rectangular sieve plate 8, which is arranged obliquely downward from front to back, with an open front side, a closed rear side and a discharge port that cooperates with the discharge trough 9; the fixed structure 10 is a frame structure that cooperates with the sieve plate fixing frame 6, which can be adjusted up and down in the sieve plate fixing frame 6 and can be taken out from the front side of the sieve plate fixing frame 6, and it presses on the upper sides of the left and right sides of the rectangular sieve plate 8 of the top layer to press the rectangular sieve plate 8 tightly onto the sieve plate fixing frame 6.

[0007] The number of layers of the rectangular sieve tray 8 in the embodiment of the present invention is 2-4.

[0008] Furthermore, a concave angular groove 12 is provided at the bottom of the sieve plate fixing frame 6 in the embodiment of the present invention; the angular groove 12 is suspended, its top is open, its front waist is arranged obliquely downward from front to back, and its rear waist is arranged obliquely downward from back to front; the vibration motor 7 is arranged on the outer wall of the front waist of the angular groove 2.

[0009] Specifically, the number of discharge troughs 9 in the embodiment of the present invention is four, and the rear side of the sieve plate fixing frame 6 is provided with four discharge ports that cooperate with the discharge trough 9. The four discharge ports are arranged side by side up and down and are all rectangular ports arranged along the left and right directions; the first discharge trough 9 is arranged along the left and right directions and obliquely downward to the discharge end, which is located directly below the rear end of the first layer of rectangular sieve plate 8, and its discharge end passes outwardly from the left or right side of the sieve plate fixing frame 6; the second discharge trough 9 is arranged along the left and right directions and obliquely downward to the discharge end, which is located above the first discharge trough 9, and is located at the rear end of the second layer of rectangular sieve plate 8 8, and its discharging end passes outwardly from the other side of the sieve plate fixing frame 6; the third discharging trough 9 is arranged obliquely downward from front to back, and its front part is located above the second discharging trough 9, and its front end is fixed to the rear end of the sieve plate fixing frame 6 and it is located directly below the rear end of the third rectangular sieve plate 8, and its rear end is arranged to the left or right; the fourth discharging trough 9 is arranged obliquely downward from front to back, and it is located above the third discharging trough 9, and its front end is fixed to the rear end of the sieve plate fixing frame 6 and it is located directly below the rear end of the fourth rectangular sieve plate 8, and its rear end is arranged in the opposite direction of the third discharging trough 9.

[0010] Preferably, a soft baffle 3 is provided on the front side of the sieve plate fixing frame 6 in the embodiment of the present invention; the soft baffle 3 is arranged in the left and right directions, and its upper end is fixed to the upper end of the front side of the sieve plate fixing frame 6, and it is arranged to hang down, which shields the front end of the rectangular sieve plate 8.

[0011] Specifically, two spring vibrators 5 are arranged side by side front and back on both the left and right sides of the bottom of the sieve plate fixing frame 6 in the embodiment of the present invention, and the four spring vibrators 5 are arranged in a rectangular shape and are all arranged vertically.

[0012] Among them, the rectangular sieve plate 8 in the embodiment of the present invention includes a wooden frame and a sieve at the bottom thereof; the left and right sides of the wooden frame are located on the adjacent inner sides of the corresponding sides of the sieve plate fixing frame 6, and the rear side thereof is open, and the rear side thereof is against the rear side of the sieve plate fixing frame 6.

[0013] Among them, the fixed structure 10 in the embodiment of the present invention includes two rows of fixing members 24, two pressure rods 21 arranged side by side on the left and right, a fixed beam 22 between the rear parts of the two pressure rods 21 and a fixed bracket 23 between the front parts of the two pressure rods 21; the two pressure rods 21 are arranged in the front-to-back direction, and are located on the adjacent inner sides of the corresponding sides of the sieve plate fixing frame 6, and they are respectively pressed on the upper sides of the left and right sides of the top rectangular sieve plate 8, and their rear ends are against the rear side of the sieve plate fixing frame 6; the fixed beam 22 is arranged in the left-right direction, and the fixed bracket 23 is arranged in the left-right direction and includes two cross bars arranged side by side in the front and back and two longitudinal bars arranged side by side in the left and right; the two cross bars are arranged in the left-to-right direction, and are respectively located on the front and back sides of the circular sieve plate 11, and their left and right ends are respectively fixed to the upper parts of the two pressure rods 21; the two longitudinal bars are arranged along the direction where the pressure rods 21 are located The two cross bars and the two longitudinal bars form a square frame matched with the circular sieve plate 11, and the circular sieve plate 11 is located in the square frame and the flange at the top is suspended on the upper side of the square frame; the pressure rod 21 and the fixed beam 22 are both square tubes; two rows of fixing members 24 are respectively arranged on the top of the left and right sides of the sieve plate fixing frame 6, which are respectively located directly above the two pressure rods 21, and they both include a plurality of fixing members 24 arranged side by side front and back; the fixing members 24 include a fixing plate and a locking screw thereon, the fixing plate is arranged along the left and right directions and is arranged on the inner side of the top of the corresponding side of the sieve plate fixing frame 6; the locking screw is perpendicular to the pressure rod 21, and is arranged on the fixing plate so as to be adjustable up and down, and its lower end abuts against the upper side of the corresponding pressure rod 21.

[0014] Furthermore, two groups of legs 2 are arranged side by side on the left and right sides of the bottom of the feed hopper 1 in the embodiment of the present invention. The two groups of legs 2 are respectively located on the left and right sides of the feed hopper 1 and are respectively located on the outside of the corresponding sides of the screening machine.

[0015] Preferably, an annular tie 13 for limiting the vibration amplitude of the sieve plate fixing frame 6 is provided between the front fixing member 24 and the supporting leg 2 on the corresponding side in the embodiment of the present invention. The beneficial effects brought about by the technical solution provided by the embodiment of the present invention are as follows: the embodiment of the present invention provides an easily adjustable finished diamond screening device, which is convenient for the quick replacement and adjustment of the number of sieves (the rectangular sieve plate can be taken out from the front side of the sieve plate fixing frame by loosening the locking screw). The circular sieve plate is used to separate impurities, which is convenient for quick removal to pour out the impurities and for observing the condition of the impurities. This patent combines the advantages of rectangular sieve plates and circular sieve plates. The circular sieve plate is small (fewer impurities) and easy to take out; the rectangular sieve plate has a large sieve area and a fast screening speed. The setting of the discharge chute facilitates the collection of the diamonds screened out by each layer of the rectangular sieve plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of an easily adjustable finished decorative diamond screening device provided by an embodiment of the present invention; Figure 2 is a top view of an easily adjustable finished decorative diamond screening device provided by an embodiment of the present invention; Figure 3 is a cross-sectional view of a combination of a sieve plate fixing frame, a rectangular sieve plate and a fixing structure; Figure 4 It is a schematic diagram of the structure of a rectangular sieve plate; Figure 5 It is a partial structural diagram of the fixed structure; Figure 6 It is a structural schematic diagram of a combination of a fixed structure and a circular sieve plate.

[0017] In the figure: 1 feed hopper, 2 legs, 3 soft baffle, 4 base, 5 spring vibration member, 6 sieve plate fixing frame, 7 vibration motor, 8 rectangular sieve plate, 9 discharge chute, 10 fixing structure, 11 circular sieve plate, 12 angular trough, 13 annular tie; 21 is a pressure rod, 22 is a fixed beam, 23 is a fixed bracket, and 24 is a fixing piece. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1 See also Figure 1-6 Embodiment 1 provides an easily adjustable finished decorative diamond screening device, which includes a feed hopper 1 and a screening machine. The feed hopper 1 is located at the front of the screening machine, with an open top and a conical bottom. A discharge valve is provided at the bottom. Two groups of legs 2 are arranged side by side on the left and right sides of the bottom, which are located directly above the front of the top rectangular sieve plate 8. The two groups of legs 2 are respectively located on the left and right sides of the feed hopper 1, which are respectively located on the outside of the corresponding sides of the screening machine, and each includes two legs 2 arranged side by side front and back. The feed hopper 1 and the screening machine are split structures, and the feed hopper 1 can be removed from the front of the screening machine to facilitate the removal of the rectangular sieve plate 8.

[0020] The screening machine includes a base 4, a sieve plate fixing frame 6, four spring vibrators 5, a vibration motor 7, a multi-layer rectangular sieve plate 8, a plurality of discharge troughs 9, a fixing structure 10, a circular sieve plate 11, an angular groove 12 and a soft baffle 3. The sieve plate fixing frame 6 is located directly above the base 4. The rectangular groove that cooperates with the rectangular sieve plate 8 is arranged obliquely downward from front to back. The front side is open, the rear side is closed and a discharge port that cooperates with the discharge trough 9 is provided on it. Two spring vibrators 5 are arranged side by side on both sides of the bottom of the sieve plate fixing frame 6. The four spring vibrators 5 are arranged in a rectangular shape. The spring vibrators 5 are arranged vertically and are arranged between the sieve plate fixing frame 6 and the base 4. Specifically, the spring vibrator 5 includes a vertically arranged spring and two fixing columns at its upper and lower ends. The two fixing columns are respectively fixed on the sieve plate fixing frame 6 and the base 4. The angular groove 12 is arranged at the bottom of the sieve plate fixing frame 6, which is suspended, and the top is open. The front waist is set obliquely downward from front to back, and the rear waist is set obliquely downward from back to front. It is used to collect the sieved materials (it can be cleaned after a period of time, such as cleaning when replacing the rectangular sieve plate 8). The vibration motor 7 is arranged on the outer wall of the front waist of the angular groove 2, which is used to drive the sieve plate fixing frame 6 to vibrate. The multi-layer rectangular sieve plates 8 are arranged side by side in the sieve plate fixing frame 6, and the sieve mesh apertures are reduced layer by layer from top to bottom. The bottom rectangular sieve plate 8 is against the bottom of the sieve plate fixing frame 6. The rectangular sieve plate 8 is set obliquely downward from front to back, and its rear end is open, and its rear end is against the rear side of the sieve plate fixing frame 6. Specifically, the number of layers of the rectangular sieve plate 8 is 2-4 layers. A plurality of discharge troughs 9 are arranged side by side and staggered up and down; the discharge troughs 9 are arranged at the rear end of the sieve plate fixing frame 6, and the number of the discharge troughs 9 is equal to the maximum number of layers of the rectangular sieve plate 8, and the discharge troughs 9 are arranged one by one with the rectangular sieve plate 8 (capable of accepting the decorative diamonds sieved out from the upper side of the corresponding rectangular sieve plate 8). The number of layers of the rectangular sieve plate 8 (adjusted as needed) is less than or equal to the number of discharge troughs 9. The fixing structure 10 is used to fix the multi-layer rectangular sieve plate 8 on the sieve plate fixing frame 6, and it is detachably arranged with the sieve plate fixing frame 6. It is a frame structure matched with the sieve plate fixing frame 6, which can be adjusted up and down in the sieve plate fixing frame 6 (to set different layers of rectangular sieve plates 8) and can be taken out from the front side of the sieve plate fixing frame 6, and it presses on the upper sides of the left and right sides of the rectangular sieve plate 8 of the top layer to press the rectangular sieve plate 8 tightly on the sieve plate fixing frame 6. The circular sieve plate 11 is detachably arranged at the front of the fixed structure 10, which is located directly below the feed hopper 1. The sieve mesh aperture (designed according to actual needs and larger than the size of the decorative diamonds) is larger than the sieve mesh aperture of the top rectangular sieve plate 8, and is used to remove impurities. The soft baffle 3 is arranged at the front side of the sieve plate fixing frame 6, which is arranged in the left-right direction, and its upper end is fixed to the upper end of the front side of the sieve plate fixing frame 6. It is set downward, which shields the front end of the rectangular sieve plate 8, and can be opened upward to take out the rectangular sieve plate 8, which is used to prevent the decorative diamonds from spilling forward under the rectangular sieve plates 8 of different layers.

[0021] The rectangular sieve plate 8 in the embodiment of the present invention comprises a wooden frame and a screen at its bottom, etc. The wooden frame is a U-shaped structure, with its left and right sides located adjacent to the inner sides of the corresponding sides of the sieve plate fixing frame 6, and its rear side is open, and its rear side is against the rear side of the sieve plate fixing frame 6.

[0022] Among them, see Figure 1-6 The fixed structure 10 in the embodiment of the present invention includes two rows of fixing members 24, two pressure rods 21 arranged side by side on the left and right sides, a fixed beam 22 between the rear parts of the two pressure rods 21, and a fixed bracket 23 between the front parts of the two pressure rods 21. The two pressure rods 21 are arranged in the front-back direction, and are located on the adjacent inner sides of the corresponding sides of the sieve plate fixing frame 6. They are respectively pressed on the upper sides of the left and right sides of the top rectangular sieve plate 8, and their rear ends are pressed against the rear side of the sieve plate fixing frame 6, which are specifically square tubes. The fixed beam 22 is arranged in the left-right direction, and is specifically a square tube. The fixed bracket 23 is arranged in the left-right direction and includes two cross bars arranged side by side on the front and back sides and two longitudinal bars arranged side by side on the left and right sides. The cross bars and the longitudinal bars are both thin round bars. The two cross bars are arranged in the left-right direction, and are respectively located on the front and back sides of the circular sieve plate 11, and their left and right ends are respectively fixed on the upper parts of the two pressure rods 21. The two longitudinal rods are arranged along the direction where the pressure rod 21 is located, and are respectively located on the left and right sides of the circular sieve plate 11, and the front and rear ends thereof are respectively fixed on the two cross rods. The two cross rods and the two longitudinal rods enclose a square frame that matches the circular sieve plate 11, and the circular sieve plate 11 is located in the square frame and the flange at the top thereof is suspended on the upper side of the square frame. Two rows of fixing members 24 are respectively arranged at the tops of the left and right sides of the sieve plate fixing frame 6, and are respectively located directly above the two pressure rods 21, and each of them includes a plurality of (specifically two) fixing members 24 arranged side by side in front and back. The fixing member 24 includes a fixing plate and a locking screw thereon, etc. The fixing plate is arranged in the left and right directions, and is arranged on the inner side of the top of the corresponding side of the sieve plate fixing frame 6, and is parallel to the pressure rod 21. The locking screw is perpendicular to the pressure rod 21, and is arranged on the fixing plate so as to be adjustable up and down, and its lower end is against the upper side of the corresponding pressure rod 21, and a ball head can be arranged at its upper end. The number of the rectangular sieve plates 8 can be adjusted or the rectangular sieve plates 8 can be replaced by loosening the locking screw.

[0023] Preferably, an annular tie 13 for limiting the vibration amplitude of the sieve plate fixing frame 6 is provided between the front fixing member 24 and the corresponding side leg 2 in the embodiment of the present invention. The two ends of the annular tie 13 are respectively sleeved on the leg 2 and the locking screw.

[0024] Example 2 See also Figure 1-6Embodiment 2 provides an easily adjustable finished product decorative diamond screening device, and its structure is basically the same as that of Embodiment 1, except that: the number of discharge troughs 9 in this embodiment is four. The rear side of the sieve plate fixing frame 6 is provided with four discharge ports that cooperate with the discharge troughs 9, and the four discharge ports are arranged side by side up and down and are all rectangular ports arranged along the left-right direction. The first (counted from bottom to top, the same below) discharge trough 9 is arranged along the left-right direction and obliquely downward to the discharge end (arranged obliquely downward from right to left), which is located directly below the rear end of the first layer of rectangular sieve plate 8, and its discharge end passes outward from the left or right side (specifically the left side) of the sieve plate fixing frame 6. The second discharge trough 9 is arranged along the left-right direction and obliquely downward to the discharge end (arranged obliquely downward from left to right), which is located above the first discharge trough 9, which is located directly below the rear end of the second layer of rectangular sieve plate 8, and its discharge end passes outward from the other side (specifically the right side) of the sieve plate fixing frame 6. The third discharge chute 9 is arranged obliquely downward from front to back, with its front portion located above the second discharge chute 9, its front end fixed to the rear end of the sieve plate fixing frame 6 and located directly below the rear end of the third rectangular sieve plate 8, and its rear end arranged to the left or right (specifically arranged to the left). The fourth discharge chute 9 is arranged obliquely downward from front to back, located above the third discharge chute 9, its front end fixed to the rear end of the sieve plate fixing frame 6 and located directly below the rear end of the fourth rectangular sieve plate 8, and its rear end arranged in the opposite direction of the third discharge chute 9 (specifically arranged to the right).

[0025] Example 3 Example 3 provides an easily adjustable finished decorative diamond screening device, the structure of which is basically the same as that of Example 2, except that: the number of rectangular sieve plates 8 in this embodiment is four layers, and the four discharge troughs 9 correspond to the four layers of rectangular sieve plates 8 respectively.

[0026] Example 4 Example 4 provides an easily adjustable finished diamond screening device, and its structure is basically the same as that of Example 2, except that: the number of rectangular sieve plates 8 in this embodiment is three layers, and the first, second and third discharge troughs 9 correspond to the three layers of rectangular sieve plates 8 respectively, and the fourth discharge trough 9 does not correspond to the rectangular sieve plate 8.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An easily adjustable finished product decorative diamond screening device, comprising a feed hopper (1) and a screening machine, the screening machine comprising a base (4), a sieve plate fixing frame (6) directly above the base (4), a plurality of spring vibrating members (5) between the sieve plate fixing frame (6) and the base (4), a vibrating motor (7) at the bottom of the sieve plate fixing frame (6), a plurality of rectangular sieve plates (8) arranged side by side in the sieve plate fixing frame (6) and a plurality of discharge troughs (9) at the rear end of the sieve plate fixing frame (6) and corresponding to the rectangular sieve plates (8) one by one, the plurality of discharge troughs (9) being arranged side by side and staggered in the upper and lower parts, the rectangular sieve plates (8) being arranged obliquely downward from front to rear and having an open rear end, the feed hopper (1) being located directly above the front part of the top rectangular sieve plate (8), the mesh aperture of the rectangular sieve plate (8) decreasing layer by layer from top to bottom; characterized in that The screening machine further comprises a fixing structure (10) for fixing the rectangular sieve plate (8) and a circular sieve plate (11) detachably arranged in front of the fixing structure (10); the feed hopper (1) can be removed from the front of the screening machine, the number of layers of the rectangular sieve plates (8) is less than or equal to the number of discharge troughs (9); the circular sieve plate (11) is located directly below the feed hopper (1) and its sieve mesh aperture is larger than the sieve mesh aperture of the top rectangular sieve plate (8); the sieve plate fixing frame (6) is in accordance with the rectangular sieve plate (8); The rectangular groove matched with the rectangular sieve plate (8) is arranged obliquely downward from front to back, with its front side open and its rear side closed and provided with a discharge port matched with the discharge groove (9); the fixed structure (10) is a frame structure matched with the sieve plate fixing frame (6), which can be adjusted up and down in the sieve plate fixing frame (6) and can be taken out from the front side of the sieve plate fixing frame (6), and it presses on the upper sides of the left and right sides of the rectangular sieve plate (8) on the top layer to press the rectangular sieve plate (8) onto the sieve plate fixing frame (6).

2. The easily adjustable finished product decorative diamond screening device according to claim 1, characterized in that: The number of layers of the rectangular sieve tray (8) is 2-4.

3. The easily adjustable finished product decorative diamond screening device according to claim 2, characterized in that: A concave angular groove (12) is provided at the bottom of the sieve plate fixing frame (6); the angular groove (12) is suspended in the air, its top is open, its front waist is arranged obliquely downward from front to back, and its rear waist is arranged obliquely downward from back to front; the vibration motor (7) is arranged on the outer wall of the front waist of the angular groove (12).

4. The easily adjustable finished product decorative diamond screening device according to claim 3, characterized in that: The number of the discharge troughs (9) is four, and the rear side of the sieve plate fixing frame (6) is provided with four discharge ports that cooperate with the discharge troughs (9), and the four discharge ports are arranged side by side up and down and are all rectangular ports arranged in the left and right directions; The first discharge chute (9) is arranged in the left-right direction and extends obliquely downward to the discharge end. It is located directly below the rear end of the first rectangular sieve plate (8). The discharge end of the first discharge chute passes out of the left or right side of the sieve plate fixing frame (6). The second discharge chute (9) is arranged in the left-right direction and obliquely downward to the discharge end, which is located above the first discharge chute (9) and directly below the rear end of the second rectangular sieve plate (8), and its discharge end passes outward from the other side of the sieve plate fixing frame (6); The third discharge chute (9) is arranged obliquely downward from front to back, with its front portion located above the second discharge chute (9), its front end fixed to the rear end of the sieve plate fixing frame (6) and located directly below the rear end of the third rectangular sieve plate (8), and its rear end arranged to the left or right; The fourth discharge chute (9) is arranged obliquely downward from front to back, and is located above the third discharge chute (9). Its front end is fixed to the rear end of the sieve plate fixing frame (6) and is located directly below the rear end of the fourth rectangular sieve plate (8). Its rear end is arranged in the opposite direction of the third discharge chute (9).

5. The easily adjustable finished decorative diamond screening device according to claim 1, characterized in that: A soft baffle (3) is provided on the front side of the sieve plate fixing frame (6); the soft baffle (3) is arranged in the left-right direction, and its upper end is fixed to the upper end of the front side of the sieve plate fixing frame (6), and it is arranged to hang down, so as to cover the front end of the rectangular sieve plate (8).

6. The easily adjustable finished product decorative diamond screening device according to claim 1, characterized in that: Two spring vibrating members (5) are arranged side by side front and back on both the left and right sides of the bottom of the sieve plate fixing frame (6); the four spring vibrating members (5) are arranged in a rectangular shape and are all arranged vertically.

7. The easily adjustable finished product decorative diamond screening device according to claim 1, characterized in that: The rectangular sieve plate (8) comprises a wooden frame and a sieve at its bottom; the left and right sides of the wooden frame are located adjacent to the inner sides of the corresponding sides of the sieve plate fixing frame (6), and the rear side is open and abuts against the rear side of the sieve plate fixing frame (6).

8. The easily adjustable finished product decorative diamond screening device according to claim 1, characterized in that: The fixing structure (10) comprises two rows of fixing members (24), two pressure rods (21) arranged side by side on the left and right, a fixing beam (22) between the rear parts of the two pressure rods (21) and a fixing bracket (23) between the front parts of the two pressure rods (21); the two pressure rods (21) are arranged in the front-back direction, and are located on the adjacent inner sides of the corresponding sides of the sieve plate fixing frame (6), and are respectively pressed against the upper sides of the left and right sides of the top rectangular sieve plate (8), and their rear ends are pressed against the rear side of the sieve plate fixing frame (6); the fixing beam (22) is arranged in the left-right direction, and the fixing bracket (23) is arranged in the left-right direction and comprises two cross bars arranged side by side on the front and back and two longitudinal bars arranged side by side on the left and right; the two cross bars are arranged in the left-right direction, and are respectively located on the front and back sides of the circular sieve plate (11), and their left and right ends are respectively fixed to the upper parts of the two pressure rods (21); the two longitudinal bars are arranged in the direction where the pressure rods (21) are located. The two cross bars and the two longitudinal bars enclose a square frame matched with the circular sieve plate (11), the circular sieve plate (11) is located in the square frame and the flange at the top is suspended on the upper side of the square frame; the pressure rod (21) and the fixing beam (22) are both square tubes; two rows of fixing members (24) are respectively arranged at the top of the left and right sides of the sieve plate fixing frame (6), which are respectively located directly above the two pressure rods (21), and each of them includes a plurality of fixing members (24) arranged side by side in front and back; the fixing member (24) includes a fixing plate and a locking screw thereon, the fixing plate is arranged along the left and right directions and is arranged on the inner side of the top of the corresponding side of the sieve plate fixing frame (6); the locking screw is perpendicular to the pressure rod (21), and is arranged on the fixing plate so as to be adjustable up and down, and its lower end abuts against the upper side of the corresponding pressure rod (21).

9. The easily adjustable finished decorative diamond screening device according to claim 8, characterized in that: Two groups of supporting legs (2) are arranged side by side on the left and right sides of the bottom of the feed hopper (1); the two groups of supporting legs (2) are respectively located on the left and right sides of the feed hopper (1) and are respectively located on the outside of the corresponding sides of the screening machine.

10. The easily adjustable finished decorative diamond screening device according to claim 9, characterized in that: An annular tie band (13) for limiting the vibration amplitude of the sieve plate fixing frame (6) is provided between the front fixing piece (24) and the supporting leg (2) on the corresponding side.

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