Packaging barrel sealing cover for chemical products

Abstract

The utility model relates to the technical field of chemical production equipment, and discloses a packaging barrel sealing cover for chemical products, which comprises a cover body, one side of the center of the upper part of the cover body is provided with a strip-shaped groove, and two ends of the groove are respectively provided with an air outlet channel and an air inlet channel which are directly communicated with the bottom of the cover body; an isolation plate is upwards arranged in the middle of the groove, and the two sides of the isolation plate are connected with an air outlet sealing ball and an air inlet sealing ball through springs correspondingly; vent holes corresponding to the spherical surfaces of the air outlet sealing ball and the air inlet sealing ball are respectively formed in the air outlet channel and the air inlet channel; the air outlet sealing ball is arranged outside the air outlet channel, the air inlet sealing ball is arranged on the upper portion of a cavity of the air inlet channel, a baffle is arranged below a ball body of the air inlet sealing ball, air holes are formed in the baffle, and the periphery of the baffle is fixedly connected to the side wall of the air inlet channel. The pressure in the packaging barrel can be automatically adjusted, manpower and material resources are saved, and the overall performance and safety of material packaging are improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, specifically to a sealing cap for packaging barrels of chemical products. Background Technology

[0002] In the chemical industry, a large amount of raw materials and products need to be stored and transported in packaging drums. Because most raw materials and products are not very stable, such as being volatile, the pressure inside the packaging drums can change. When the pressure changes significantly, the packaging drums may deform or be damaged under pressure, leading to explosions or material leaks, causing property damage, personal injury, and environmental pollution. Therefore, companies that store large quantities of such raw materials and products need to assign dedicated personnel to perform venting operations and conduct regular inspections in the warehouse, which wastes human and material resources. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a sealing cap for packaging barrels of chemical products, which overcomes the technical defects in the prior art, can realize automatic adjustment of the pressure inside the packaging barrel, save manpower and material resources, and improve the overall performance and safety of material packaging.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A sealing cap for a packaging drum of chemical products includes a cap body. A long, narrow groove is provided on one side of the upper center of the cap body (the rectangular frame in the middle is the opening slot for the cap; an opening wrench is inserted and rotated to unscrew the cap). An air outlet channel and an air inlet channel, respectively, are provided at both ends of the groove, leading directly to the bottom of the cap body. An isolation plate is provided upwards in the middle of the groove, and an air outlet sealing ball and an air inlet sealing ball are connected to both sides of the isolation plate via springs. Ventilation holes corresponding to the spherical surfaces of the air outlet sealing ball and the air inlet sealing ball are provided on the air outlet channel and the air inlet sealing ball, respectively. The air outlet sealing ball is located outside the air outlet channel, and the air inlet sealing ball is located at the upper part of the air inlet channel cavity. A baffle (to prevent the ball from falling) is provided below the air inlet sealing ball, and the baffle has ventilation holes. The outer periphery of the baffle is fixedly connected to the side wall of the air inlet channel.

[0006] Preferably, the cover is circular.

[0007] Furthermore, the cover is a circular cover with threads on its lower outer periphery.

[0008] Preferably, a sealing ring is provided at the contact point between the vent hole and the spherical surfaces of the outlet sealing ball and the inlet sealing ball to ensure airtightness at this location.

[0009] Preferably, the height of the isolation plate is lower than the depth of the groove; the isolation plate is fixedly connected to the bottom and side walls of the groove.

[0010] Preferably, the springs on both sides of the isolation plate are springs with different elasticities. The spring elasticity is selected according to the set pressure requirements.

[0011] Preferably, a pressure plate is provided at the top of the air outlet channel facing the groove to prevent the air outlet sealing ball from popping upwards.

[0012] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] This invention does not increase the height of the sealing cap, ensuring that the drums can be stacked in double layers during transportation. By controlling the elasticity of the springs on both sides of the partition plate, the compression degree of the springs can be precisely controlled, thereby adjusting the opening pressure thresholds for air outlet and inlet. This ensures the accuracy and reliability of pressure control inside the drum, avoiding dangers caused by excessive pressure and preventing problems such as drum collapse, decreased surface mechanical properties, and material leakage caused by negative pressure. It eliminates the need for manual inspection and daily venting operations, saving manpower and resources. A reliable seal is formed when the air outlet and inlet are closed, preventing gas leakage, ensuring the sealing of the material inside the drum, reducing the possibility of material volatilization and external impurities entering the drum, and guaranteeing the quality and safety of the material.

[0014] In summary, the overall structure of this utility model is simple, and each component is easy to install and disassemble, making it convenient to inspect, repair or replace each component during use, reducing later maintenance costs and improving the operability and service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a front view cross-sectional schematic diagram of the structural portion of an embodiment of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall side view of the cover structure of this utility model;

[0018] In the diagram, 1 is the cover; 2 is the groove; 3 is the air outlet channel; 4 is the air inlet channel; 5 is the isolation plate; 6 is the spring; 7 is the air outlet sealing ball; 8 is the air inlet sealing ball; 9 is the pressure plate; and 10 is the baffle. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example 1

[0021] like Figures 1 to 3As shown, a sealing cap for a packaging drum of chemical products includes a cap body 1. A long, narrow groove 2 is provided on one side of the upper center of the cap body 1. An air outlet channel 3 and an air inlet channel 4, respectively, are provided at both ends of the groove 2, leading directly to the bottom of the cap body 1. An isolation plate 5 is provided upwards in the middle of the groove 2. An air outlet sealing ball 7 and an air inlet sealing ball 8 are connected to both sides of the isolation plate 5 via springs 6. Ventilation holes (not shown) corresponding to the spherical surfaces of the air outlet sealing ball 7 and air inlet sealing ball 8 are provided on the air outlet channel 3 and air inlet channel 4, respectively. The air outlet sealing ball 7 is located outside the air outlet channel 3, and a pressure plate 9 is provided at the top of the air outlet channel 3 facing the groove. The air inlet sealing ball 8 is located at the upper part of the cavity of the air inlet channel 4. A baffle 10 (to prevent the ball from falling) is provided below the sphere of the air inlet sealing ball 8. Ventilation holes (not shown) are provided on the baffle 10, and the outer periphery of the baffle 10 is fixedly connected to the side wall of the air inlet channel 4.

[0022] In practical applications, under normal conditions, the pressure inside the packaging drum is within the normal range, and both the vent sealing ball 7 and the inlet sealing ball 8 are tightly connected to the vent hole. At this time, the spring 6 is in a slightly tense state, applying slight pressure to the vent sealing ball 7 and slight tension to the inlet sealing ball 8, so that the vent holes on the surfaces of the vent sealing ball 7 and the inlet sealing ball 8 are tightly fitted onto the vent hole to prevent gas leakage.

[0023] When the pressure inside the barrel increases to a set value (e.g., exceeding 1 MPa), the gas inside the barrel exerts an outward force on the vent sealing ball 7. This force overcomes the spring force and pushes the vent sealing ball 7 outward, causing the vent hole to open. The high-pressure gas inside the barrel is then discharged through the vent hole, achieving pressure relief. As the gas is discharged, the pressure inside the barrel gradually decreases. When the pressure decreases to a certain level, the spring force again exceeds the force exerted by the gas on the vent sealing ball 7, causing the vent sealing ball 7 to rebound and close the vent hole, ending the exhaust process.

[0024] When the material inside the barrel causes a negative pressure due to shrinkage or other reasons, when the negative pressure reaches a set value (e.g., -0.05MPa), the external atmospheric pressure exerts a force on the inlet sealing ball 8 of the suction valve, pushing it into the outlet channel 3. This force is greater than the spring force, pushing the inlet sealing ball 8 into the outlet channel 3, opening the vent. Under the action of atmospheric pressure, outside air enters the barrel through the vent, replenishing the air inside the barrel and causing the pressure inside the barrel to gradually rise. When the pressure inside the barrel returns to normal, the spring force pulls the inlet sealing ball 8 out of the outlet channel 3, closing the vent, and the suction process is completed.

[0025] Throughout the process, by selecting the elasticity of the spring, the pressure inside the barrel can be precisely controlled to fluctuate within a suitable range, effectively avoiding problems such as barrel swelling and barrel collapse, and achieving automatic adjustment of the pressure inside the barrel without manual intervention.

[0026] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A closure for a chemical product packaging drum, characterized by comprising: The device includes a cover, with an elongated groove on one side of the upper center of the cover. At both ends of the groove are an air outlet channel and an air inlet channel that lead directly to the bottom of the cover. An isolation plate is installed in the middle of the groove, and an air outlet sealing ball and an air inlet sealing ball are connected to the two sides of the isolation plate by springs. The air outlet channel and the air inlet channel are respectively provided with vent holes corresponding to the spherical surfaces of the air outlet sealing ball and the air inlet sealing ball. The air outlet sealing ball is located outside the air outlet channel, and the air inlet sealing ball is located in the upper part of the air inlet channel cavity. A baffle is provided under the body of the air inlet sealing ball, and the baffle is provided with vent holes. The outer periphery of the baffle is fixedly connected to the side wall of the air inlet channel.

2. The closure lid for a chemical industry product packaging barrel according to claim 1, characterized by The cover is circular.

3. The closure lid for a chemical industry product packaging barrel according to claim 2, characterized by The cover is a circular cover with threads on the outer periphery of its lower part.

4. The closure lid for a chemical industry product packaging barrel according to claim 1, characterized by A sealing ring is provided at the contact point between the vent and the spherical surfaces of the outlet sealing ball and the inlet sealing ball.

5. The closure lid for a chemical industry product packaging barrel according to claim 1, characterized by The height of the isolation plate is lower than the depth of the groove; the isolation plate is fixedly connected to the bottom and side walls of the groove.

6. The closure lid for a chemical industry product packaging barrel according to claim 1, characterized by A pressure plate is provided at the top of the air outlet channel facing the groove.

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