Temporary discharging device of nylon stock bin

Abstract

The utility model relates to the technical field of nylon production, in particular to a temporary discharging device of a nylon stock bin. Comprising a bin body, a discharging pipe and a temporary discharging pipe are arranged at the bottom of the bin body, the temporary discharging pipe is obliquely arranged, the lower end of the temporary discharging pipe is connected with a discharging barrel, the discharging barrel comprises a barrel body connected with the temporary discharging pipe, a pushing plug is arranged in the barrel body, and the outer edge of the pushing plug abuts against the inner wall of the barrel body. The upper portion of the propelling plug is fixedly connected with a piston rod of the pneumatic cylinder through a connecting rod penetrating through the upper wall of the barrel. A check valve is arranged at a bottom outlet of the barrel. The temporary discharging pipe is connected with a nitrogen pipeline through a first purging pipe, the nitrogen pipeline is connected with a discharging pipe through a second purging pipe, a temporary discharging valve is arranged on the temporary discharging pipe, a first purging valve is arranged on the first purging pipe, a second purging valve is arranged on the second purging pipe, and a discharging valve is arranged on the discharging pipe. According to the utility model, the condition of unsmooth blockage during temporary unloading is effectively avoided, material residues after unloading are reduced, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nylon production, in particular to a temporary unloading device for a nylon silo. Background Art

[0002] In the production process of nylon 66 chips, products first enter a silo, are then unloaded from the silo, and then enter a conveyor system for packaging and storage. In the event of product anomalies, temporary isolation, or conveyor system problems, a temporary unloading line is required to temporarily prevent the material from entering the conveyor system. However, existing temporary unloading lines present numerous operational issues, such as poor unloading, clogging, and cross-contamination caused by residual material, which severely impacts production efficiency and product quality. Utility Model Content

[0003] The technical problem to be solved by the utility model is to propose a temporary unloading device for a nylon silo, which effectively avoids blockage during unloading, reduces material residue after unloading, prevents cross contamination, and improves production efficiency and product quality.

[0004] The temporary unloading device for a nylon silo described in the present invention comprises a silo body, a discharge pipe and a temporary unloading pipe are provided at the bottom of the silo body, the temporary unloading pipe is arranged obliquely, the lower end of the temporary unloading pipe is connected to a unloading barrel, the unloading barrel comprises a cylinder body connected to the temporary unloading pipe, a push plug is provided in the cylinder body, the outer edge of the push plug is abutted against the inner wall of the cylinder body, the upper part of the push plug is fixedly connected to the piston rod of the pneumatic cylinder by a connecting rod passing through the upper wall of the cylinder body, and a check valve is provided at the bottom outlet of the cylinder body; the temporary unloading pipe is connected to the nitrogen pipeline through the first purge pipe, the nitrogen pipeline is connected to the discharge pipe through the second purge pipe, a temporary unloading valve is provided on the temporary unloading pipe, a first purge valve is provided on the first purge pipe, a second purge valve is provided on the second purge pipe, and a discharge valve is provided on the discharge pipe.

[0005] Preferably, a residual material pipe is further provided at the bottom of the silo body. When the temporary unloading pipe and the discharge pipe are purged with nitrogen, the purged material can enter the residual material pipe and be discharged.

[0006] Preferably, the outer wall of the silo body is provided with an air hammer which can be opened at intervals to prevent the material from adhering to the silo body and the pipe wall, thereby avoiding blockage.

[0007] Preferably, the upper portion of the silo body is cylindrical and the lower portion is in an inverted cone shape.

[0008] Preferably, the check valve includes a support shaft, valve disc 1 and valve disc 2, which are disposed on either side of the support shaft and are respectively hinged to the support shaft. A torsion spring is disposed between valve disc 1 and valve disc 2, which is mounted on the support shaft. When no external force is applied, valve disc 1 and valve disc 2, acting under the action of the torsion spring, keep the check valve closed, preventing gas from entering. When an external force is applied, valve disc 1 and valve disc 2 are angled around the support shaft, causing the check valve to open and release material.

[0009] Preferably, a discharge portion is provided at the lower part of the cylinder body, which is connected to the cylinder body, and the top of the discharge portion is connected to the bottom end of the cylinder body through an annular sealing plate; a check valve is provided inside the discharge portion, and both ends of the supporting shaft of the check valve are fixed on the annular sealing plate. When the angle between valve plate one and valve plate two is 180°, valve plate one and valve plate two are both against the annular sealing plate.

[0010] Preferably, the inner diameter of the discharge portion is larger than the inner diameter of the cylinder, the inner edge of the annular sealing plate is sealed to the lower edge of the cylinder, and the outer edge of the annular sealing plate is sealed to the upper edge of the discharge portion.

[0011] Preferably, a circle of sealing gaskets is provided on the annular sealing plate, and the sealing gaskets are provided corresponding to the valve disc 1 and the valve disc 2. The sealing gaskets increase the sealing performance of the valve disc 1 and the valve disc 2 when the check valve is closed.

[0012] Valves can be installed on the pipeline according to control needs, and the flow of materials in the corresponding pipeline can be conveniently controlled and adjusted by opening and closing the valves.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The material enters the cylinder through the temporary discharge pipe, and then the pneumatic cylinder controls the push plug to move downward to push the material out. When the push plug moves upward to reset, the check valve blocks the cylinder outlet, forming a short-term negative pressure in the cylinder, and the material in the silo is pressed into the cylinder. This setting not only effectively avoids the material from adhering to the barrel and causing unloading problems, but also improves the unloading efficiency.

[0015] 2. After the temporary unloading is completed, the temporary unloading pipe and the discharge pipe can be purged with nitrogen to avoid material residue in the pipe, avoid cross contamination, and prevent pipeline blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the temporary unloading device for nylon silo of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the utility model's stop reverse valve in closed state;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model when the stop reverse valve is in the open state;

[0019] In the figure: 1. Silo body; 2. Discharge pipe; 3. Temporary unloading pipe; 4. Cylinder; 5. Push plug; 6. Connecting rod; 7. Pneumatic cylinder; 8. Check valve; 9. Purge pipe 1; 10. Nitrogen pipeline; 11. Purge pipe 2; 12. Temporary unloading valve; 13. Purge valve 1; 14. Purge valve 2; 15. Discharge valve; 16. Residual material pipe; 17. Air hammer; 18. Support shaft; 19. Valve disc 1; 20. Valve disc 2; 21. Torsion spring; 22. Discharge part; 23. Annular sealing plate; 24. Sealing gasket. DETAILED DESCRIPTION

[0020] The present invention will be described clearly and completely below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the temporary unloading device of the nylon silo includes a silo body 1, a discharge pipe 2 and a temporary unloading pipe 3 are provided at the bottom of the silo body 1, the temporary unloading pipe 3 is inclined, and the lower end of the temporary unloading pipe 3 is connected to the unloading cylinder, and the unloading cylinder includes a cylinder body 4 connected to the temporary unloading pipe 3, a push plug 5 is provided in the cylinder body 4, the outer edge of the push plug 5 is against the inner wall of the cylinder body 4, the upper part of the push plug 5 is fixedly connected to the piston rod of the pneumatic cylinder 7 by a connecting rod 6 passing through the upper wall of the cylinder body 4, and a check valve 8 is provided at the bottom outlet of the cylinder body 4; the temporary unloading pipe 3 is connected to the nitrogen pipeline 10 through the purge pipe 1 9, and the nitrogen pipeline 10 is connected to the discharge pipe 2 through the purge pipe 2 11, a temporary unloading valve 12 is provided on the temporary unloading pipe 3, a purge valve 13 is provided on the purge pipe 1 9, a purge valve 2 14 is provided on the purge pipe 2 11, and a discharge valve 15 is provided on the discharge pipe 2.

[0022] A residual material pipe 16 is also provided at the bottom of the silo body 1 .

[0023] An air hammer 17 is provided on the outer wall of the silo body 1 .

[0024] The upper part of the silo body 1 is cylindrical, and the lower part is inverted cone shape.

[0025] like Figure 2 As shown, the check valve 8 includes a supporting shaft 18, a valve disc 19 and a valve disc 20. The valve disc 19 and the valve disc 20 are arranged on both sides of the supporting shaft 18 and are respectively hinged to the supporting shaft 18. A torsion spring 21 is provided between the valve disc 19 and the valve disc 20, and the torsion spring 21 is installed on the supporting shaft 18.

[0026] The lower part of the cylinder 4 is connected to the cylinder 4 and is provided with a discharge part 22, and the top of the discharge part 22 is connected to the bottom end of the cylinder 4 through an annular sealing plate 23; the check valve 8 is arranged inside the discharge part 22, and the two ends of the supporting shaft 18 of the check valve 8 are fixed on the annular sealing plate 23. When the angle between the valve disc 19 and the valve disc 20 is 180°, the valve disc 19 and the valve disc 20 are both against the annular sealing plate 23.

[0027] The inner diameter of the discharge portion 22 is larger than that of the cylinder 4 . The inner edge of the annular sealing plate 23 is sealed to the lower edge of the cylinder 4 , and the outer edge of the annular sealing plate 23 is sealed to the upper edge of the discharge portion 22 .

[0028] like Figure 3 As shown, a circle of sealing gasket 24 is provided on the annular sealing plate 23, and the sealing gasket 24 is provided corresponding to the valve disc 19 and the valve disc 2 20.

[0029] The working process is as follows: when temporary unloading is required, the temporary unloading valve 12 is opened. Under the action of gravity, the material enters the cylinder 4 through the temporary unloading pipe 3, and then the pneumatic cylinder 7 is started, and the plug 5 is pushed downward to push the material down. When the material passes through the check valve, a downward force is applied to the valve plate 19 and the valve plate 20. The valve plate 19 and the valve plate 20 overcome the force of the torsion spring 21 and rotate downward along the support shaft 18, and the check valve is opened to discharge the material. When all the material in the cylinder 4 is pushed out, the valve plate 19 and the valve plate 20 are reset under the action of the torsion spring 21. The valve plate 19 and the valve plate 20 are against the annular sealing plate 23, and the check valve is closed. When the pneumatic cylinder 7 is started, the plug 5 is pushed upward to quickly form a negative pressure in the cylinder 4. Under the action of atmospheric pressure and gravity, the material accelerates the speed of entering the cylinder 4 from the silo body 1, and then the plug 5 is pushed downward to complete the second unloading; and so on until the temporary unloading is completed;

[0030] When the material in the silo body 1 is unloaded, the purge valve 13, the purge valve 2 14 and the discharge valve 15 are opened to purge the material in the temporary unloading pipe 3 and the discharge pipe 2. The purged material is discharged through the residual material pipe 16, reducing the residual material in the pipe.

Claims

1. A temporary unloading device for a nylon silo, comprising a silo body (1), characterized in that: The bottom of the silo body (1) is provided with a discharge pipe (2) and a temporary discharge pipe (3). The temporary discharge pipe (3) is inclined. The lower end of the temporary discharge pipe (3) is connected to the discharge cylinder. The discharge cylinder includes a cylinder (4) connected to the temporary discharge pipe (3). A push plug (5) is provided in the cylinder (4). The outer edge of the push plug (5) is against the inner wall of the cylinder (4). The upper part of the push plug (5) is fixed to the piston rod of the pneumatic cylinder (7) through a connecting rod (6) passing through the upper wall of the cylinder (4). The cylinder (4) is fixedly connected, and a check valve (8) is provided at the bottom outlet of the cylinder (4); the temporary unloading pipe (3) is connected to the nitrogen pipeline (10) through the purge pipe (9), and the nitrogen pipeline (10) is connected to the discharge pipe (2) through the purge pipe (11); a temporary unloading valve (12) is provided on the temporary unloading pipe (3), a purge valve (13) is provided on the purge pipe (9), a purge valve (14) is provided on the purge pipe (11), and a discharge valve (15) is provided on the discharge pipe (2).

2. The temporary unloading device for nylon silo according to claim 1, characterized in that: A residual material pipe (16) is also provided at the bottom of the silo body (1).

3. The temporary unloading device for nylon silo according to claim 1, characterized in that: An air hammer (17) is provided on the outer wall of the silo body (1).

4. The temporary unloading device for nylon silo according to claim 1, characterized in that: The upper part of the silo body (1) is cylindrical, and the lower part is in an inverted cone shape.

5. The temporary unloading device for nylon silo according to claim 1, characterized in that: The check valve (8) comprises a supporting shaft (18), a valve disc 1 (19) and a valve disc 2 (20). The valve disc 1 (19) and the valve disc 2 (20) are arranged on both sides of the supporting shaft (18) and are respectively hinged to the supporting shaft (18). A torsion spring (21) is provided between the valve disc 1 (19) and the valve disc 2 (20), and the torsion spring (21) is installed on the supporting shaft (18).

6. The temporary unloading device for nylon silo according to claim 5, characterized in that: The lower part of the cylinder (4) is connected to the cylinder (4) and is provided with a discharge portion (22). The top end of the discharge portion (22) is connected to the bottom end of the cylinder (4) through an annular sealing plate (23). The check valve (8) is arranged inside the discharge portion (22). Both ends of the support shaft (18) of the check valve (8) are fixed on the annular sealing plate (23). When the angle between the valve plate 1 (19) and the valve plate 2 (20) is 180 degrees, the valve plate 1 (19) and the valve plate 2 (20) are both against the annular sealing plate (23).

7. The temporary unloading device for nylon silo according to claim 6, characterized in that: The inner diameter of the discharge portion (22) is larger than the inner diameter of the cylinder (4); the inner edge of the annular sealing plate (23) is sealedly connected to the lower edge of the cylinder (4); and the outer edge of the annular sealing plate (23) is sealedly connected to the upper edge of the discharge portion (22).

8. The temporary unloading device for nylon silo according to claim 7, characterized in that: A circle of sealing gasket (24) is provided on the annular sealing plate (23), and the sealing gasket (24) is arranged corresponding to the valve plate 1 (19) and the valve plate 2 (20).

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