Sieve plate structure of solid maleic anhydride vibrating screen classifier

Abstract

The utility model relates to the technical field of screening equipment, in particular to a screen plate structure of a solid maleic anhydride vibrating screening machine. The screen plate structure of the solid maleic anhydride vibrating screen classifier comprises an integrally-formed screen plate, the screen plate comprises a middle screening part and a fixing part surrounding the screening part, a plurality of circular screening holes are formed in the screening part, reinforcing ribs are arranged on the lower surface of the screening part, and the reinforcing ribs are arranged on the screen plate between the adjacent screening holes and connected with one another to form a net-shaped structure. A plurality of fixing holes are formed in the fixing part around the screen part by a circle, an outer reinforcing ring and an inner reinforcing ring are arranged on the upper surface of the fixing part, and the fixing holes are located between the outer reinforcing ring and the inner reinforcing ring. According to the utility model, the wear degree in use is reduced, the structure is reinforced, the fracture caused by wear and impact is reduced, the service life is prolonged, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a screen plate structure of a solid maleic anhydride vibration screening machine. Background Art

[0002] The vibration screening machine uses the weights (unbalanced weights) installed above and below the motor shaft to convert the motor's rotational motion into horizontal, vertical, and inclined three-dimensional motion, and then transmits this motion to the screen surface, so that the material moves outward on the screen surface. Involute motion, so this series of vibration screens is called a rotary vibration screen. The rotary vibration screen has the advantages of long material movement trajectory and high screen surface utilization. Adjusting the phase angle of the weights at the upper and lower ends can change the movement trajectory of the material on the screen surface, and can perform fine screening and probability screening on the material; the screen is the direct separation interface of the material, and its performance is crucial in the rectification of vibration screening. At present, the screen of the solid maleic anhydride vibration screening machine is generally woven with stainless steel wire. The periphery of the screen is fixed on the frame and cannot be disassembled. After the packaging load is increased, the impact of the spherical solid anhydride on the screen increases, and due to the friction between the medium and the wire mesh, and between the steel wire and the steel wire, the screen often breaks in a short period of operation, causing the screening machine to fail to operate normally; and because the screen cannot be replaced separately, the cost of accessories is high, the delivery cycle is long, and it cannot meet the use needs in time. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sieve plate structure of a solid maleic anhydride vibration screening machine, which reduces the degree of wear during use, strengthens the structure, reduces breakage caused by wear and impact, prolongs the service life, and saves production costs.

[0004] The sieve plate structure of the solid maleic anhydride vibrating screening machine described in the utility model comprises an integrally formed mesh plate, the mesh plate comprises a screening portion in the middle and a fixed portion surrounding the screening portion, a plurality of circular sieve holes are provided on the screening portion, reinforcing ribs are provided on the lower surface of the screening portion, the reinforcing ribs are provided on the mesh plate between adjacent sieve holes and are connected to each other to form a mesh structure, a plurality of fixing holes are provided on the fixed portion around the screening portion, an outer reinforcing ring and an inner reinforcing ring are provided on the upper surface of the fixed portion, and the fixing holes are located between the outer reinforcing ring and the inner reinforcing ring.

[0005] Preferably, the sieve hole includes an upper opening on the upper surface of the mesh plate, a lower opening on the lower surface of the mesh plate, and a path connecting the upper opening and the lower opening, the upper opening and the lower opening and the path are all connected by an arc surface, the upper opening and the lower opening are both circular, and the diameter of the lower opening is larger than the diameter of the upper opening. Such a setting reduces the friction between the particles and the mesh plate when passing through the sieve hole, the particles pass more smoothly, and the screen can be prevented from being blocked.

[0006] Preferably, the reinforcing ribs and the mesh plate are integrally formed or connected by welding.

[0007] Preferably, the outer reinforcement ring and the inner reinforcement ring are integrally formed with the mesh plate or connected by welding.

[0008] Preferably, it also includes an installation frame, which includes a base plate and a baffle fixed to the outer edge of the base plate and perpendicular to the base plate. The base plate is arranged below the fixing part and corresponds to the fixing part. The base plate is provided with an installation hole, and the base plate and the fixing part are connected by connecting bolts passing through the installation hole and the fixing hole.

[0009] Preferably, it further comprises a fastening nut threadedly connected to the connecting bolt, the connecting bolt comprises a head and a screw rod threadedly connected to the fastening nut below the head, when the connecting bolt connects the bottom plate to the fixing portion and the fastening nut is locked, an anti-skid hole vertically arranged to the central axis of the screw rod is arranged below the fastening nut on the screw rod, and a stopper rod is detachably arranged in the anti-skid hole. The anti-skid hole and the stopper rod cooperate to block the movement of the fastening nut, thereby preventing the fastening nut from sliding due to vibration and causing the connecting bolt to fall off.

[0010] Preferably, the anti-slip hole and the stop rod are interference fit.

[0011] Preferably, one end of the blocking rod is a round head, and the other end is provided with a pull ring. The provision of the round head facilitates the insertion of the blocking rod into the anti-slip hole, and the provision of the pull ring facilitates the removal of the blocking rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The edges of the circular screen holes are smooth, without sharp corners or edges, so it is not easy to form stress concentration areas under the action of external forces, and it is not easy to generate shear stress when the material passes through; compared with the traditional woven screen, the one-piece molded mesh plate will not produce friction between the steel wires, and the overall structure is more solid and has stronger impact resistance;

[0014] 2. Since the weakest part of the mesh plate is mainly near the sieve hole, the setting of the reinforcing ribs strengthens the sieve hole to prevent the sieve hole from receiving too much expansion force and causing the mesh plate to break; the setting of the inner and outer reinforcing rings strengthens the outer edge of the mesh plate;

[0015] 3. The utility model reduces the degree of wear of materials, strengthens the structure, reduces the breakage caused by wear and impact, prolongs the service life, and saves production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the mesh plate and the installation frame structure;

[0017] Figure 2 It is a schematic diagram of the sieve hole structure when viewed from above;

[0018] Figure 3 yes Figure 2 A schematic diagram of the longitudinal section structure along the straight line A;

[0019] Figure 4 It is a schematic diagram of the longitudinal structure of the fixed part;

[0020] Figure 5 It is a schematic diagram of the connecting bolt structure;

[0021] Figure 6 It is another structural schematic diagram of the connecting bolt;

[0022] In the figure: 1. mesh plate; 2. screening part; 3. fixing part; 4. sieve hole; 5. reinforcing rib; 6. fixing hole; 7. outer reinforcing ring; 8. inner reinforcing ring; 9. upper opening; 10. lower opening; 11. diameter; 12. bottom plate; 13. baffle; 14. mounting hole; 15. connecting bolt; 16. fastening nut; 17. head; 18. screw; 19. anti-slip hole; 20. baffle rod; 21. pull ring. DETAILED DESCRIPTION

[0023] The present invention will be described clearly and completely below with reference to the accompanying drawings.

[0024] like Figure 1 , Figure 2 , Figure 4 As shown, the sieve plate structure of the solid maleic anhydride vibrating screening machine described in the utility model includes an integrally formed mesh plate 1, the mesh plate 1 includes a middle screening portion 2 and a fixing portion 3 surrounding the screening portion 2, a plurality of circular sieve holes 4 are opened on the screening portion 2, a reinforcing rib 5 is provided on the lower surface of the screening portion 2, the reinforcing rib 5 is arranged on the mesh plate 1 between adjacent sieve holes 4 and connected to each other to form a mesh structure, a plurality of fixing holes 6 are opened on the fixing portion 3 around the screening portion 2, an outer reinforcing ring 7 and an inner reinforcing ring 8 are provided on the upper surface of the fixing portion 3, and the fixing hole 6 is located between the outer reinforcing ring 7 and the inner reinforcing ring 8.

[0025] like Figure 3 As shown, the sieve hole 4 includes an upper opening 9 on the upper surface of the mesh plate 1, a lower opening 10 on the lower surface of the mesh plate 1 and a through diameter 11 connecting the upper opening 9 and the lower opening 10. The upper opening 9, the lower opening 10 and the through diameter 11 are all connected by an arc surface. The upper opening 9 and the lower opening 10 are both circular and the diameter of the lower opening 10 is larger than that of the upper opening 9.

[0026] The reinforcing ribs 5 and the mesh plate 1 are formed integrally.

[0027] The outer reinforcement ring 7 and the inner reinforcement ring 8 are integrally formed with the mesh plate 1 .

[0028] like Figure 1As shown, it also includes a mounting frame, which includes a base plate 12 and a baffle 13 fixed to the outer edge of the base plate 12 and perpendicular to the base plate 12. The base plate 12 is arranged below the fixing portion 3 and corresponds to the fixing portion 3. A mounting hole 14 is provided on the base plate 12. The base plate 12 and the fixing portion 3 are connected by connecting bolts 15 that pass through the mounting hole 14 and the fixing hole 6.

[0029] like Figure 5 , Figure 6 As shown, it also includes a fastening nut 16 threadedly connected to the connecting bolt 15, and the connecting bolt 15 includes a head 17 and a screw rod 18 threadedly connected to the fastening nut 16 below the head 17. When the connecting bolt 15 connects the base plate 12 with the fixing part 3 and the fastening nut 16 is locked, an anti-slip hole 19 is provided on the screw rod 18 below the fastening nut 16 and is perpendicular to the central axis of the screw rod 18. A blocking rod 20 is detachably provided in the anti-slip hole 19.

[0030] The anti-slip hole 19 and the blocking rod 20 are interference fit.

[0031] One end of the blocking rod 20 is rounded, and the other end is provided with a pull ring 21.

[0032] During operation, the mesh panel 1 is placed with the side of the reinforcing rib 5 facing upwards, and the mesh panel 1 is fixed to the bottom plate 12 of the mounting frame by connecting bolts 15, and the fastening nuts 16 are tightened, and the blocking rods 20 are inserted into the anti-slip holes 19, and the mesh panel 1 is installed.

Claims

1. A sieve plate structure of a solid maleic anhydride vibration screening machine, characterized in that: The invention comprises an integrally formed mesh plate (1), the mesh plate (1) comprising a screening portion (2) in the middle and a fixing portion (3) surrounding the screening portion (2), a plurality of circular screening holes (4) being provided on the screening portion (2), a reinforcing rib (5) being provided on the lower surface of the screening portion (2), the reinforcing rib (5) being provided on the mesh plate (1) between adjacent screening holes (4) and being connected to each other to form a mesh structure, a plurality of fixing holes (6) being provided on the fixing portion (3) around the screening portion (2), an outer reinforcing ring (7) and an inner reinforcing ring (8) being provided on the upper surface of the fixing portion (3), the fixing hole (6) being located between the outer reinforcing ring (7) and the inner reinforcing ring (8).

2. The sieve plate structure of the solid maleic anhydride vibrating screening machine according to claim 1, characterized in that: The sieve hole (4) comprises an upper opening (9) on the upper surface of the mesh plate (1), a lower opening (10) on the lower surface of the mesh plate (1), and a through-path (11) connecting the upper opening (9) and the lower opening (10); the upper opening (9), the lower opening (10) and the through-path (11) are all connected via an arc surface; the upper opening (9) and the lower opening (10) are both circular, and the diameter of the lower opening (10) is larger than the diameter of the upper opening (9).

3. The sieve plate structure of the solid maleic anhydride vibrating screening machine according to claim 1, characterized in that: The reinforcing ribs (5) and the mesh plate (1) are integrally formed or connected by welding.

4. The sieve plate structure of the solid maleic anhydride vibrating screening machine according to claim 1, characterized in that: The outer reinforcement ring (7) and the inner reinforcement ring (8) are integrally formed with the mesh plate (1) or connected by welding.

5. The sieve plate structure of the solid maleic anhydride vibrating screening machine according to claim 1, characterized in that: The invention also comprises a mounting frame, which comprises a bottom plate (12) and a baffle (13) fixed to the outer edge of the bottom plate (12) and perpendicular to the bottom plate (12); the bottom plate (12) is arranged below the fixing portion (3) and is arranged corresponding to the fixing portion (3); a mounting hole (14) is provided on the bottom plate (12); the bottom plate (12) and the fixing portion (3) are connected by connecting bolts (15) passing through the mounting hole (14) and the fixing hole (6).

6. The sieve plate structure of the solid maleic anhydride vibrating screening machine according to claim 5, characterized in that: The invention also comprises a fastening nut (16) threadedly connected to the connecting bolt (15), the connecting bolt (15) comprising a head (17) and a screw rod (18) threadedly connected to the fastening nut (16) below the head (17), when the connecting bolt (15) connects the base plate (12) and the fixing part (3) and the fastening nut (16) is locked, an anti-slip hole (19) arranged perpendicular to the central axis of the screw rod (18) is provided on the screw rod (18) below the fastening nut (16), and a stop rod (20) is detachably provided in the anti-slip hole (19).

7. The sieve plate structure of the solid maleic anhydride vibrating screening machine according to claim 6, characterized in that: The anti-slip hole (19) and the blocking rod (20) are in interference fit.

8. The sieve plate structure of the solid maleic anhydride vibrating screening machine according to claim 7, characterized in that: One end of the blocking rod (20) is a round head, and the other end is provided with a pull ring (21).

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