Cylinder gland sealing structure

Abstract

The utility model belongs to the field of electrolysis equipment, and discloses a cylinder gland sealing structure which comprises an electrolytic bath and a closed electrolysis control cabinet. A positive pressure protection system is arranged in the electrolysis control cabinet and comprises a clean gas supply system, a pressure control device and a sealing assembly. The clean gas supply system is used for providing clean gas into the control cabinet; the pressure control device adjusts the gas pressure in the control cabinet, so that the gas pressure is maintained in a preset positive pressure range; the sealing assembly is arranged at each interface of the control cabinet to prevent external gas from entering. Clean gas enters the control cabinet through the gas supply pipeline, a positive pressure environment is formed, and external air containing corrosive gas such as ammonia gas and chlorine is prevented from entering the control cabinet. According to the design, corrosion of corrosive gas to electrical components in the control cabinet is effectively prevented, the equipment failure frequency is reduced, the service life of equipment is remarkably prolonged, and the reliability and stability of the electrolysis device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pneumatic element sealing technical field, concretely relates to a cylinder gland sealing structure. BACKGROUND

[0002] The existing cylinder usually adopts rubber sealing parts at the gland sealing position, and the sealing parts are often affected by high temperature, dust and other environmental factors during use, and are prone to aging, cracking, wear and deformation and other problems. Once the rubber seal fails, dust and other impurities are more likely to enter the cylinder, causing the piston rod and the cylinder body to wear and tear, and the cylinder to leak, thus requiring frequent maintenance or replacement, increasing the maintenance cost and reducing the service life of the equipment.

[0003] Therefore, how to provide a more wear-resistant gland sealing structure that can effectively prevent dust from entering the cylinder and at the same time has good lubrication effect has become a technical problem to be solved in the field. SUMMARY

[0004] The utility model discloses a new sealing structure to solve the problems of traditional rubber seal, such as fast aging, dust easily entering the cylinder and causing wear and tear, and the like, so that the sealing structure has a longer service life, better dustproof performance and better lubrication effect, reduces the maintenance frequency of the cylinder and prolongs the service life of the cylinder.

[0005] To achieve the above-mentioned purpose, the utility model provides a new cylinder gland sealing structure, which comprises:

[0006] A sealing body is pressed and formed by polytetrafluoroethylene copper powder material, is used for replacing traditional rubber seal, and is adapted to the cylinder gland and the piston rod in shape;

[0007] A friction surface is arranged at the inner diameter of the sealing body, contacts the piston rod and forms sealing and dustproof effect;

[0008] An oil storage groove is arranged below the friction surface and is used for storing lubricating oil brought by the piston rod;

[0009] A sealing ring is arranged below the oil storage groove, the inner diameter of the sealing ring is slightly larger than the inner diameter of the friction surface, so that the piston rod can bring the oil in the oil storage groove into the inner side of the gland or the copper sleeve part during retraction, and the cylinder is further lubricated.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] Better wear resistance: polytetrafluoroethylene copper powder material is adopted, which has excellent high-temperature resistance and wear resistance, and can better resist aging problems in high-temperature environment compared with rubber products, prolonging the service life.

[0012] Better dustproof performance: The contact area between the sealing body friction surface and the piston rod is increased, effectively preventing dust and impurities from entering the cylinder and reducing the wear of the piston rod and cylinder.

[0013] Improved lubrication performance: The addition of an oil reservoir under the friction surface can hang the lubricating oil on the piston rod into the reservoir, and then bring the oil to the gland or copper sleeve when the piston rod retracts, enhancing the lubrication of the sealing part and the copper sleeve, and further reducing wear.

[0014] Reduced maintenance cost: Due to longer service life of sealing materials, less wear and tear, and less air leakage, the frequency of repair can be reduced, thereby reducing the overall maintenance cost of the equipment.

[0015] Working principle:

[0016] By establishing a positive pressure environment in the electrolysis control cabinet, using the continuous supply of clean gas, the pressure inside the cabinet is higher than the external atmospheric pressure. Since gas flows from high pressure area to low pressure area, the positive pressure environment effectively prevents the infiltration of external air containing corrosive gases such as ammonia and chlorine into the control cabinet, protecting the internal electrical components from corrosion.

[0017] Technical advantages:

[0018] Significant corrosion prevention effect: The positive pressure protection system fundamentally prevents the entry of corrosive gases, prolonging the service life of electrical components.

[0019] Improved equipment reliability: Reduces equipment failures caused by corrosion, ensuring the continuity and stability of production.

[0020] Simple and feasible structure: The use of airtight structure and positive pressure system is mature and easy to implement.

[0021] Further, the clean gas supply system includes:

[0022] Clean gas source: Provides dry and clean gas;

[0023] Filter and dryer: Set on the gas supply pipeline to filter and dry the gas;

[0024] Flow control device: Including pressure reducing valve, flow meter and solenoid valve, to control the gas pressure and flow entering the electrolysis control cabinet.

[0025] Working principle:

[0026] The gas provided by the clean gas source passes through the filter and dryer to remove impurities and moisture, ensuring the cleanliness of the gas. The flow control device adjusts the pressure and flow of the gas to ensure stable gas supply. Clean and dry gas enters the control cabinet to form a positive pressure and carry away heat.

[0027] Technical advantages:

[0028] High-quality gas supply: filtration and drying processes ensure the cleanliness of the gas, preventing secondary pollution.

[0029] Stable and reliable gas supply: flow control devices ensure stable pressure and flow of the gas supply, maintaining a positive pressure environment.

[0030] Good heat dissipation effect: clean gas also serves as a cooling agent, removing heat from the control cabinet.

[0031] Further, the pressure control device includes:

[0032] Pressure sensor: real-time monitoring of gas pressure in the electrolysis control cabinet;

[0033] Controller: receives signals from the pressure sensor to control the flow control device to adjust the gas supply;

[0034] Alarm device: alerts when pressure is abnormal.

[0035] Working principle:

[0036] The pressure sensor detects the gas pressure in the control cabinet and transmits the data to the controller. The controller automatically adjusts the opening degree of the electromagnetic valve according to the set pressure range, increasing or decreasing the gas supply to maintain a positive pressure in the cabinet. When the pressure exceeds the set range, the alarm device prompts the operator to take action.

[0037] Technical advantages:

[0038] Automatic control: real-time monitoring combined with automatic adjustment ensures that the pressure is maintained within the ideal range.

[0039] High safety: timely alarm in abnormal situations to avoid safety hazards caused by excessive or low pressure.

[0040] Easy to operate: reduces manual intervention, improves system reliability and efficiency.

[0041] Further, the sealing assembly includes a sealing door, a sealing joint, and a sealing strip, which is installed at the door, cable inlet, and pipe interface of the electrolysis control cabinet to ensure the airtightness of the control cabinet.

[0042] Working principle:

[0043] By installing sealing assemblies at all possible leakage points of the control cabinet, gas leakage is prevented. The sealing door uses a sealing strip and locking device, the sealing joint is used for cable and pipe inlets, and the sealing strip is filled in the connection gap to improve the overall sealing performance of the control cabinet.

[0044] Technical advantages:

[0045] Excellent sealing performance: Multiple sealing design ensures good airtightness of the control cabinet, which is the basis for maintaining a positive pressure environment.

[0046] High protection level: Effectively prevents the intrusion of dust, moisture, and corrosive gases, protecting internal equipment.

[0047] High durability: Use of corrosion-resistant materials extends the service life of the sealing assembly.

[0048] Further, the electrolysis control cabinet is equipped with a heat exchanger and an auxiliary heat dissipation device. When clean gas enters the control cabinet, it passes through the heat exchanger, taking away the heat inside the control cabinet.

[0049] Working principle:

[0050] When clean gas enters the control cabinet, it first passes through the heat exchanger and exchanges heat with the heat source inside the control cabinet, absorbing heat. The auxiliary heat dissipation device (such as a heat sink or heat pipe) accelerates the transfer of heat from the electrical components to the gas. The hot gas is discharged under positive pressure, achieving the purpose of cooling.

[0051] Technical advantages:

[0052] High-efficiency heat dissipation: The combination of the heat exchanger and the auxiliary heat dissipation device improves heat dissipation efficiency, ensuring that the equipment works at an appropriate temperature.

[0053] Compact structure: Utilizing the flow of clean gas for heat dissipation eliminates the need for additional cooling systems, saving space.

[0054] Energy-saving and environmentally friendly: Reduces power consumption and lowers energy costs.

[0055] Further, the auxiliary heat dissipation device is a heat sink or heat pipe installed on the electrical components.

[0056] Working principle:

[0057] The heat sink increases the surface area of the electrical components, and the heat pipe uses the principle of evaporation and condensation of liquid to accelerate heat conduction. Both can effectively transfer the heat generated by the electrical components to the surrounding clean gas, working with the heat exchanger to achieve rapid heat dissipation.

[0058] Technical advantages:

[0059] Significant heat dissipation effect: Direct heat dissipation from the heat source improves heat dissipation efficiency.

[0060] Prolong the service life of components: Reduce the working temperature of electrical components and reduce the failure caused by overheating.

[0061] Easy to install: Heat sinks and heat pipes are small in size and easy to install on existing equipment.

[0062] Further, the clean gas is dry clean compressed air or nitrogen.

[0063] Working principle:

[0064] Dry clean compressed air or nitrogen as a gas supply medium, with no corrosion, high stability. Nitrogen also has inert, can further prevent the occurrence of oxidation reaction. Use these gases to maintain a positive pressure environment, to ensure the clean and stable environment in the control cabinet.

[0065] Technical advantages:

[0066] High safety: inert gas such as nitrogen does not support combustion, which improves the safety of the system.

[0067] Anti-oxidation: reduce the oxidation corrosion of oxygen on electrical components.

[0068] Cost control: compressed air is easy to obtain, nitrogen can be selected according to needs, high flexibility.

[0069] Further, the electrolysis control cabinet is also provided with a one-way exhaust valve for discharging excess gas when the internal pressure is too high.

[0070] Working principle:

[0071] When the internal pressure of the control cabinet exceeds the set safety range, the one-way exhaust valve automatically opens to release excess gas, preventing excessive pressure from damaging the control cabinet and internal components. The exhaust valve automatically closes when the pressure returns to normal, continuing to maintain a positive pressure environment.

[0072] Technical advantages:

[0073] Safety protection: prevent equipment damage and safety accidents caused by overpressure.

[0074] Automatic regulation: no manual intervention, the system automatically maintains pressure balance.

[0075] High reliability: simple structure, low failure rate, easy maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0076] Figure 1 The structure of the embodiment of the utility model is shown in the figure. DETAILED DESCRIPTION

[0077] The following will be further described in detail through specific embodiments:

[0078] As Figure 1 shown, a new sealing structure of cylinder gland, comprising: a sealing body 1, its outer circumferential surface is fixed in the corresponding groove of the gland or copper sleeve, the inner circumferential surface is the friction surface 11 matched with the piston rod 3;

[0079] An oil storage groove 12 is arranged below the friction surface 11 and forms an annular recess structure.

[0080] A sealing ring 13 is arranged below the oil storage groove 12 and has an inner diameter slightly larger than that of the friction surface 11.

[0081] In use, the sealing body 1 is tightly attached to the piston rod 3 to achieve dustproof and primary sealing. When the piston rod is extended, the lubricating oil on the surface of the piston rod will be hung into the oil storage groove 12 by the friction surface 11 of the sealing body 1, and the oil storage groove 12 serves as a temporary storage for the lubricating oil. When the piston rod is retracted, the lubricating oil in the oil storage groove 12 will be taken into the inside of the gland or the copper sleeve together with the piston rod due to the fact that the inner diameter of the sealing ring 13 is larger than that of the friction surface 11, thereby forming lubrication for the gland and the copper sleeve, reducing friction and wear, and further prolonging the service life of the cylinder and the sealing element.

[0082] The sealing body 1 is integrally formed or processed after being pressed by a mold from a polytetrafluoroethylene copper powder material, has better high-temperature resistance and wear resistance than traditional rubber seals, and is particularly suitable for long-term work in harsh environments such as high frequency, high temperature and dust. According to specific use requirements, the sealing ring 13 can also be prepared from the same or similar material to ensure the consistency and stability of the overall seal.

[0083] The above is only an embodiment of the present application, and the specific structure and properties of the scheme known in the art are not described in detail. It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicability of the present application. The specific embodiments and the like in the specification can be used to explain the content of the claims.

Claims

1. A cylinder head sealing structure, comprising a sealing body (1) and an installation part disposed within a cylinder head or a copper sleeve, wherein the inner circumferential surface of the sealing body (1) is in contact with the piston rod, characterized in that: The sealing body (1) is made of polytetrafluoroethylene containing copper powder. The inner circumferential surface of the sealing body (1) is provided with a friction surface (11); An annular oil reservoir (12) is provided below the friction surface (11); A sealing ring is provided below the oil storage tank (12), and the inner diameter of the sealing ring is larger than the inner diameter of the friction surface (11).

2. The cylinder gland sealing structure according to claim 1, characterized in that: The sealing body (1) is made by a one-time molding process using a mold, and its outer circumferential surface is matched with the pressure cap or copper sleeve.

3. The cylinder gland sealing structure according to claim 1 or 2, characterized in that: The contact area of ​​the friction surface (11) formed by the sealing body (1) and the piston rod is larger than that of a traditional rubber seal, so as to improve the dustproof capability.

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