Novel device for preventing nitrocotton from blocking pressure relief valve

Abstract

The utility model relates to the technical field of nitrocotton processing, in particular to a novel device for preventing nitrocotton from blocking a pressure relief valve, which comprises a boiling and washing barrel, a barrel cover, an exhaust pipeline, the pressure relief valve, a stainless steel sheet and a handle, the barrel cover is arranged above the boiling and washing barrel, the exhaust pipeline penetrates through the barrel cover, and the pressure relief valve is arranged above the exhaust pipeline. The pressure relief valve is connected with an exhaust pipeline flange, the stainless steel sheet is arranged below the exhaust pipeline, small through holes are formed in the surface of the stainless steel sheet, and a handle is arranged below the stainless steel sheet; according to the utility model, the stainless steel sheet shields and protects the pipe orifice of the exhaust pipeline, so that when the boiling and washing barrel is in an exhaust open pressure state, nitrocotton cannot enter the exhaust pipeline along with airflow, the airflow enters the exhaust pipeline through the small holes, and the nitrocotton cannot pass through the small holes and is retained on the surface of the stainless steel sheet, so that only exhaust but no cotton entering is realized; therefore, normal operation of the pressure relief valve is guaranteed, and production safety and product quality are guaranteed at the same time.

Description

Technical Field

[0001] This utility model relates to the field of nitrocellulose processing technology, and in particular to a novel device for preventing nitrocellulose from clogging the pressure relief valve. Background Technology

[0002] The boiling and washing of nitrocellulose is an important part of the nitrocellulose production process. Nitrocellulose undergoes stabilization treatment and viscosity adjustment in high-temperature and high-pressure acid water. During the boiling and washing process, the boiling and washing tank needs to be vented and depressurized.

[0003] When the current washing tank is under open pressure during venting, the high pressure inside the tank causes the airflow to carry nitrocellulose into the vent pipe, which in turn blocks the pressure relief valve. This can lead to the valve not closing properly, affecting the venting effect; it can even cause the accumulated nitrocellulose to decompose, creating safety and quality hazards.

[0004] Therefore, to address the current issue that when the washing tank is under open pressure during venting, the high pressure inside the tank causes airflow to carry nitrocellulose into the vent pipe, posing safety and quality risks, a new device can be designed to prevent nitrocellulose from clogging the pressure relief valve. By shielding and protecting the opening of the vent pipe, the device ensures that only venting occurs while preventing nitrocellulose from entering, thus preventing nitrocellulose from clogging the pressure relief valve and ensuring its normal operation. This, in turn, guarantees production safety and product quality. Utility Model Content

[0005] To overcome the current problem that when the washing tank is under open pressure during venting, the high pressure inside the washing tank causes the airflow to carry nitrocellulose into the vent pipe, which in turn blocks the pressure relief valve. This can lead to the valve not closing properly, affecting the venting effect, and may even cause the accumulated nitrocellulose to decompose, creating safety and quality hazards.

[0006] The technical solution of this utility model is as follows: a novel device for preventing nitrocellulose from clogging the pressure relief valve, comprising a washing tub, a tub lid, an exhaust pipe, a pressure relief valve, a stainless steel sheet, and a handle. The tub lid is located above the washing tub, the exhaust pipe passes through the tub lid, the pressure relief valve is located above the exhaust pipe and is connected to the exhaust pipe flange, the stainless steel sheet is located below the exhaust pipe, a through hole is opened on the surface of the stainless steel sheet, and a handle is located below the stainless steel sheet.

[0007] Preferably, by setting up an exhaust pipe, the gas inside the washing tank can be discharged, thereby opening the pressure and venting the washing tank. By setting up a pressure relief valve, the pressure relief of the exhaust pipe can be controlled. By setting up a stainless steel sheet, one end of the exhaust pipe can be blocked and protected, thereby preventing nitrocellulose from entering the interior of the exhaust pipe. By setting up a small hole, airflow can pass through the stainless steel sheet and be discharged through the exhaust pipe and pressure relief valve, achieving only air discharge and no cotton ingress, so that nitrocellulose cannot clog the pressure relief valve. By setting up a handle, the stainless steel sheet can be easily disassembled and assembled.

[0008] Preferably, the washing tub has a groove at the top and a sealing ring at the bottom of the lid, with the sealing ring and the groove corresponding to each other.

[0009] Preferably, the stainless steel sheet is circular in shape, and its size is consistent with the size of the exhaust pipe opening.

[0010] Preferably, the stainless steel sheet has six sets of flange holes on its surface. The flange holes are located around the small holes, and the stainless steel sheet is connected to the exhaust pipe flange through the flange holes.

[0011] Preferably, multiple sets of small holes are provided, and the small holes are arranged in a ring around the center of the stainless steel sheet surface, with the hole diameter <1mm.

[0012] Preferably, the handle is located at the center of the stainless steel sheet surface, the handle is rotatably connected to the stainless steel sheet, and a cleaning rod is fixedly installed on the periphery of the handle, with the cleaning rod in contact with the surface of the stainless steel sheet.

[0013] Preferably, a baffle is fixedly installed on the periphery of the handle. The baffle is circular in shape and its diameter is slightly larger than that of the stainless steel sheet.

[0014] The beneficial effects of this utility model are:

[0015] This invention uses a stainless steel sheet to shield and protect the opening of the exhaust pipe, preventing nitrocellulose from entering the exhaust pipe with the airflow when the washing tub is under pressure. The airflow enters the exhaust pipe through a small hole, while the nitrocellulose remains on the surface of the stainless steel sheet, thus allowing only air to be released and preventing cotton from entering. This prevents the nitrocellulose from clogging the pressure relief valve, ensuring its normal operation, and simultaneously guaranteeing production safety and product quality. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the novel device for preventing nitrocellulose from clogging the pressure relief valve and causing an explosion in the washing tub.

[0017] Figure 2 The diagram shown is a three-dimensional cross-sectional view of the barrel cover of the novel device for preventing nitrocellulose from clogging the pressure relief valve according to this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the exhaust pipe of the novel device for preventing nitrocellulose from clogging the pressure relief valve according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural representation of the stainless steel sheet beneath the novel device for preventing nitrocellulose from clogging the pressure relief valve according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Washing tub; 101. Groove; 2. Tub lid; 201. Sealing ring; 3. Exhaust pipe; 4. Pressure relief valve; 5. Stainless steel sheet; 501. Flange hole; 502. Small hole; 6. Handle; 601. Cleaning rod; 602. Baffle plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1-Figure 4 This utility model provides an embodiment: a novel device for preventing nitrocellulose from clogging a pressure relief valve, comprising a washing tub 1, a tub lid 2, an exhaust pipe 3, a pressure relief valve 4, a stainless steel sheet 5, and a handle 6. The tub lid 2 is positioned above the washing tub 1, the exhaust pipe 3 passes through the tub lid 2, the pressure relief valve 4 is positioned above the exhaust pipe 3 and is flanged to the exhaust pipe 3, the stainless steel sheet 5 is positioned below the exhaust pipe 3, the surface of the stainless steel sheet 5 has a through hole 502, and the handle 6 is positioned below the stainless steel sheet 5; by setting the exhaust pipe... The exhaust pipe 3 can release the gas inside the washing tank 1, thereby opening the pressure and venting the washing tank 1. The pressure relief valve 4 can control the pressure relief of the exhaust pipe 3. The stainless steel sheet 5 can block and protect one end of the exhaust pipe 3, thereby preventing nitrocellulose from entering the interior of the exhaust pipe 3. The small hole 502 allows airflow to pass through the stainless steel sheet 5 and be discharged through the exhaust pipe 3 and the pressure relief valve 4, so that only air is discharged and no cotton enters, preventing the nitrocellulose from clogging the pressure relief valve 4. The handle 6 can be used to easily install and remove the stainless steel sheet 5.

[0023] Please see Figure 1-Figure 2 In this embodiment, a groove 101 is provided on the upper part of the washing tub 1, and a sealing ring 201 is provided on the lower part of the tub lid 2. The sealing ring 201 and the groove 101 correspond to each other. By setting the groove 101 and the sealing ring 201 to cooperate, the airtightness between the tub lid 2 and the washing tub 1 can be improved.

[0024] Please see Figures 3-4In this embodiment, the stainless steel sheet 5 is circular in shape, and its size is consistent with the opening size of the exhaust pipe 3. Six sets of flange holes 501 are provided on the surface of the stainless steel sheet 5. The flange holes 501 are located around the small holes 502, and the stainless steel sheet 5 is connected to the flange of the exhaust pipe 3 through the flange holes 501. Multiple sets of small holes 502 are provided, arranged in a ring around the center of the surface of the stainless steel sheet 5, and the diameter of the small holes 502 is <1mm. The handle 6 is located at the center of the surface of the stainless steel sheet 5, and is rotatably connected to the stainless steel sheet 5. A cleaning rod 601 is fixedly installed around the periphery of the handle 6, and the cleaning rod 601 is connected to the stainless steel sheet 5. The surface of the stainless steel sheet 5 is in contact with the handle 6. The handle 6 can rotate on the surface of the stainless steel sheet 5, which can drive the cleaning rod 601 to rotate. This can clean the small amount of nitrocellulose adhering to the surface of the stainless steel sheet 5 and prevent it from accumulating too much and clogging the small hole 502. A baffle 602 is fixedly installed on the outer periphery of the handle 6. The baffle 602 is circular in shape and its diameter is slightly larger than that of the stainless steel sheet 5. By setting the baffle 602, the area directly below the small hole 502 can be blocked, which can prevent the airflow from carrying the nitrocellulose directly to the small hole 502. It can also block part of the nitrocellulose, reduce the accumulation of nitrocellulose at the small hole 502, and at the same time, it does not affect the airflow through the small hole 502.

[0025] During operation, the groove 101 and the sealing ring 201 work together to improve the airtightness between the washing tub 1 and the tub lid 2 and prevent air leakage.

[0026] The nitrocellulose can be boiled and washed using the boiling and washing tank 1. The pressure relief valve 4 can be used to release the pressure of the boiling and washing tank 1 through the exhaust pipe 3. At this time, the airflow will be discharged from the boiling and washing tank 1 through the exhaust pipe 3. However, the air pressure inside the boiling and washing tank 1 is high, and the airflow will move the nitrocellulose together.

[0027] The stainless steel sheet 5 can be used to shield and protect the opening of the exhaust pipe 3, preventing nitrocellulose from entering the interior of the exhaust pipe 3. The airflow can enter the exhaust pipe 3 through the small holes 502 on the surface of the stainless steel sheet 5 and then be discharged. The nitrocellulose cannot pass through the small holes 502 and remains on the surface of the stainless steel sheet 5, thus achieving the goal of only venting the air and not allowing cotton to enter.

[0028] The baffle 602 can initially block the airflow, preventing the airflow from carrying the nitrocellulose directly to the small hole 502. It can block part of the nitrocellulose, reduce the accumulation of nitrocellulose at the small hole 502, and at the same time, it does not affect the airflow through the small hole 502.

[0029] After the boiling and washing process is completed, open the bucket lid 2 and turn the handle 6 to rotate the cleaning rod 601. This can clean the small amount of nitrocellulose adhering to the surface of the stainless steel sheet 5, preventing it from accumulating too much and clogging the small hole 502.

[0030] Through the above steps, the stainless steel sheet 5 protects the opening of the exhaust pipe 3, preventing nitrocellulose from entering the exhaust pipe 3 with the airflow when the washing tank 1 is under open pressure. The airflow enters the exhaust pipe 3 through the small hole 502, while the nitrocellulose remains on the surface of the stainless steel sheet 5, thus achieving exhaust without cotton entering. This prevents the nitrocellulose from clogging the pressure relief valve 4, ensuring its normal operation and guaranteeing production safety and product quality. This solves the current problem where, under open pressure, the airflow carries nitrocellulose into the exhaust pipe, clogging the pressure relief valve 4, causing the valve to not close tightly and affecting the exhaust effect. It can even cause the accumulated nitrocellulose to decompose, creating safety and quality hazards.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A novel device for preventing nitrocellulose from clogging a pressure relief valve, comprising a washing tub (1) and a tub lid (2); characterized in that: It also includes an exhaust pipe (3), a pressure relief valve (4), a stainless steel sheet (5) and a handle (6). The bucket lid (2) is located above the washing bucket (1). The exhaust pipe (3) passes through the bucket lid (2). The pressure relief valve (4) is located above the exhaust pipe (3). The pressure relief valve (4) is connected to the flange of the exhaust pipe (3). The stainless steel sheet (5) is located below the exhaust pipe (3). A through hole (502) is opened on the surface of the stainless steel sheet (5). A handle (6) is located below the stainless steel sheet (5).

2. The novel device for preventing nitrocellulose from clogging the pressure relief valve according to claim 1, characterized in that: A groove (101) is provided on the top of the washing tub (1), and a sealing ring (201) is provided on the bottom of the tub lid (2). The sealing ring (201) and the groove (101) correspond to each other.

3. The novel device for preventing nitrocellulose from clogging the pressure relief valve according to claim 1, characterized in that: The stainless steel sheet (5) is circular in shape, and the size of the stainless steel sheet (5) is consistent with the size of the exhaust pipe (3).

4. The novel device for preventing nitrocellulose from clogging the pressure relief valve according to claim 1, characterized in that: The stainless steel sheet (5) has six sets of flange holes (501) on its surface. The flange holes (501) are located around the small holes (502). The stainless steel sheet (5) is connected to the flange of the exhaust pipe (3) through the flange holes (501).

5. A novel device for preventing nitrocellulose from clogging a pressure relief valve according to claim 1, characterized in that: Multiple sets of small holes (502) are provided. The small holes (502) are arranged in a ring around the center of the surface of the stainless steel sheet (5). The diameter of the small holes (502) is <1mm.

6. A novel device for preventing nitrocellulose from clogging a pressure relief valve according to claim 1, characterized in that: The handle (6) is located at the center of the surface of the stainless steel sheet (5). The handle (6) is rotatably connected to the stainless steel sheet (5). A cleaning rod (601) is fixedly installed on the periphery of the handle (6). The cleaning rod (601) is in contact with the surface of the stainless steel sheet (5).

7. A novel device for preventing nitrocellulose from clogging a pressure relief valve according to claim 1, characterized in that: A baffle plate (602) is fixedly installed on the periphery of the handle (6). The baffle plate (602) is circular in shape and its diameter is slightly larger than that of the stainless steel plate (5).

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