Vacuum pump suction port filter device

Abstract

The utility model discloses a kind of vacuum pump suction port filter devices, it is related to metal processing technical field, including filter tank, filter assembly, connecting structure and sealing structure;Connecting structure is respectively docked vacuum pump suction port and equipment end valve, filter assembly is located in tank and is fixed by support structure, sealing structure guarantees the sealing property of junction;Filter assembly contains primary bowl filter piece and secondary ring groove filter piece, gradient arrangement intercepts metal volatile along air flow direction;Support structure is bracket in tank, filter assembly is fixed by screw nut by screw rod;Tank contains main body and two end sealing cover, and junction surface is equipped with rubber sealing ring and is locked by screw;Connecting structure is vacuum clamp;Reduce air flow obstruction, reduce maintenance difficulty, reduce additional loss, adapt to vacuum pump protection demand.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, specifically a vacuum pump extraction port filter device. Background Technology

[0002] In the metallurgical industry, equipment such as metal heating furnaces rely on vacuum pumps to maintain an internal vacuum environment to ensure the smooth operation of metal smelting and heat treatment processes. As the core component of a vacuum system, the operational stability of the vacuum pump directly affects production efficiency and product quality, while the inlet filtration device is a crucial element in protecting the vacuum pump and is widely used in industrial vacuum systems.

[0003] However, during metal heating, volatile metal compounds are easily drawn into the vacuum pump along with the airflow. Before reaching the vacuum pump through the extraction pipeline, these compounds condense into metal dust, which then enters the pump and mixes with the pump oil to form an oil-sludge mixture. This mixture can cause multiple types of damage to the internal components of the vacuum pump: the metal dust may clog exhaust valves, oil holes, and other parts, leading to pump overheating or even seizure; the corrosive components in the volatile compounds can also corrode the pump chamber, slide valves, and bearings, increasing clearances, reducing pumping speed, and shortening the equipment's lifespan. Although some vacuum pump inlet filtration devices have been put into use, in practical applications, existing filtration devices suffer from complex maintenance and operation, and are prone to generating additional losses, failing to fully meet the actual needs of vacuum pump protection in industrial production. Utility Model Content

[0004] The present invention aims to solve the above problems, thereby providing a vacuum pump extraction port filter device that is simple to operate and reduces maintenance difficulty.

[0005] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0006] A vacuum pump exhaust port filtration device includes a filter tank, a filter assembly, a connecting structure, and a sealing structure. The connecting structure connects to both ends of the filter tank, one for connecting to the vacuum pump exhaust port and the other for connecting to a valve at the equipment end. The filter assembly is disposed within the filter tank and fixed by a support structure. The sealing structure is disposed at the junction of the end of the filter tank and the connecting structure. The filter assembly includes at least two stages of filter elements, with each stage of filter elements arranged sequentially along the airflow direction.

[0007] Furthermore, the filter assembly includes a primary filter and a secondary filter, with the openings of both filters facing the same direction. The primary filter has a bowl-shaped structure and is located on the side near the valve at the docking device end. The secondary filter has an annular groove structure, with the inner ring diameter being smaller than the diameter of the primary filter. The bowl-shaped primary filter initially intercepts and collects most of the volatile metals in the airflow, while the annular groove structure of the secondary filter further filters the small portion of volatiles that escape, forming a gradient filtration effect and improving the interception efficiency of volatile metals.

[0008] Furthermore, the support structure is a bracket installed on the inner wall of the filter tank, and the filter assembly is fixed to the bracket by a threaded connector. The combination of the bracket and the threaded connector makes the installation and disassembly of the filter assembly more convenient, and facilitates subsequent cleaning or maintenance of the filter assembly.

[0009] Furthermore, the threaded connector includes a lead screw and a nut, with the two filter elements connected in series by the lead screw and locked and fixed to the bracket by the nut; this enhances the overall structural stability of the filter assembly.

[0010] Furthermore, the filter tank includes a tank body and sealing caps respectively covering both ends of the tank body, and the sealing structure is disposed on the interface between the sealing cap and the tank body to ensure the vacuum sealing of the tank.

[0011] Furthermore, the sealing structure is a rubber sealing ring, and the sealing cover is fixed to the tank body by screws, and the rubber sealing ring is squeezed to form a seal; ensuring that the filtration process is carried out in a closed environment.

[0012] Furthermore, the connection structure is a vacuum clamp, and both ends of the filter tank are connected to the vacuum pump's air extraction port and the equipment's valve respectively through the vacuum clamp; this facilitates quick replacement or maintenance of the filter device according to production needs.

[0013] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0014] This invention uses a filter tank to carry the filter components, and a connecting structure to connect with the vacuum pump's extraction port and the equipment's valves. Simultaneously, a sealing structure ensures vacuum sealing during the filtration process. Multi-stage filter elements intercept and filter volatile metals in the airflow. While intercepting volatile metals, it reduces airflow obstruction, helping to maintain the system's vacuum level. Addressing the issues of complex maintenance and additional losses in existing devices, its integrated filter tank and detachable connecting structure design reduce maintenance difficulty. Furthermore, the multi-stage filter element combination eliminates the need for consumable filter materials, reducing additional losses and better meeting the actual needs of vacuum pump protection in industrial production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the filter assembly structure according to an embodiment of the present invention;

[0017] The components in the diagram are labeled as follows: 1. Vacuum pump; 2. Filter tank; 3. Filter assembly; 4. Vacuum clamp; 5. Rubber sealing ring; 6. Equipment end valve; 21. Tank body; 22. Sealing cover; 31. Primary filter element; 32. Secondary filter element; 33. Support; 34. Threaded connector. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0019] See Figures 1-2 A vacuum pump exhaust port filtration device includes a filter tank 2, a filter assembly 3, a connecting structure, and a sealing structure. The connecting structure connects both ends of the filter tank 2, one for connecting to the exhaust port of the vacuum pump 1, and the other for connecting to the equipment end valve 6. The filter assembly 3 is disposed inside the filter tank 2 and fixed by a support structure. The sealing structure is disposed at the junction of the end of the filter tank 2 and the connecting structure. The filter assembly 3 includes at least two stages of filter elements, with each stage of filter elements arranged sequentially along the airflow direction.

[0020] The filter assembly 3 includes a primary filter element 31 and a secondary filter element 32, with the openings of the two filter elements facing the same direction. The primary filter element 31 has a bowl-shaped structure and is located on the side near the valve 6 at the docking device end. The secondary filter element 32 has an annular groove structure, with the inner ring diameter being smaller than the diameter of the primary filter element 31, and the outer ring diameter matching the inner diameter of the filter tank 2. The bowl-shaped primary filter element 31 initially intercepts and collects most of the volatile metals in the airflow, while the annular groove structure of the secondary filter element 32 can further filter the small portion of volatiles that escape, forming a gradient filtration effect and improving the interception efficiency of volatile metals.

[0021] The support structure is a bracket 33 installed on the inner wall of the filter tank 2. The filter assembly 3 is fixed to the bracket 33 by a threaded connector 34. The combination of the bracket 33 and the threaded connector 34 makes the installation and disassembly of the filter assembly 3 more convenient and facilitates subsequent cleaning or maintenance of the filter.

[0022] The threaded connector 34 includes a lead screw and a nut. The two filter elements are connected in series by the lead screw and locked and fixed to the bracket 33 by the nut; this can enhance the overall structural stability of the filter assembly 3.

[0023] The filter tank 2 includes a tank body 21 and sealing caps 22 respectively covering both ends of the tank body 21. The sealing structure is provided at the connection surface between the sealing cap 22 and the tank body 21 to ensure the vacuum sealing of the tank.

[0024] The sealing structure is a rubber sealing ring 5. The sealing cover 22 is fixed to the tank body 21 by screws, and the rubber sealing ring 5 is squeezed to form a seal, ensuring that the filtration process is carried out in a closed environment.

[0025] The connection structure is a vacuum clamp 4. Both ends of the filter tank 2 are connected to the vacuum pump 1's air extraction port and the equipment end valve 6 respectively through the vacuum clamp 4; this facilitates quick replacement or maintenance of the filter device according to production needs.

[0026] This invention uses a filter tank to carry the filter components, and a connecting structure to connect with the vacuum pump's extraction port and the equipment's valves. Simultaneously, a sealing structure ensures vacuum sealing during the filtration process. Multi-stage filter elements intercept and filter volatile metals in the airflow. While intercepting volatile metals, it reduces airflow obstruction, helping to maintain the system's vacuum level. Addressing the issues of complex maintenance and additional losses in existing devices, its integrated filter tank and detachable connecting structure design reduce maintenance difficulty. Furthermore, the multi-stage filter element combination eliminates the need for consumable filter materials, reducing additional losses and better meeting the actual needs of vacuum pump protection in industrial production.

[0027] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A vacuum pump intake port filter device, characterized in that: The filter includes a filter tank, a filter assembly, a connecting structure, and a sealing structure. The connecting structure connects to both ends of the filter tank, one for connecting to the vacuum pump's suction port and the other for connecting to the equipment's valve. The filter assembly is housed within the filter tank and fixed by a support structure. The sealing structure is located at the junction of the end of the filter tank and the connecting structure. The filter assembly includes at least two stages of filter elements, with each stage arranged sequentially along the airflow direction.

2. The vacuum pump extraction port filter device according to claim 1, characterized in that: The filter assembly includes a primary filter element and a secondary filter element, with the openings of the two filter elements facing the same direction; the primary filter element has a bowl-shaped structure and is located on the side near the valve at the docking equipment end; the secondary filter element has an annular groove structure, and the inner ring diameter is smaller than the diameter of the primary filter element.

3. The vacuum pump extraction port filter device according to claim 1, characterized in that: The support structure is a bracket installed on the inner wall of the filter tank, and the filter assembly is fixed to the bracket by threaded connectors.

4. The vacuum pump extraction port filter device according to claim 3, characterized in that: The threaded connector includes a lead screw and a nut. The two filter elements are connected in series by the lead screw and locked and fixed to the bracket by the nut.

5. The vacuum pump extraction port filter device according to claim 1, characterized in that: The filter tank includes a tank body and sealing caps that cover both ends of the tank body, and the sealing structure is provided at the interface between the sealing cap and the tank body.

6. The vacuum pump extraction port filter device according to claim 5, characterized in that: The sealing structure is a rubber sealing ring. The sealing cover is fixed to the tank body by screws, and the rubber sealing ring is squeezed to form a seal.

7. The vacuum pump extraction port filter device according to claim 1, characterized in that: The connection structure is a vacuum clamp, and the two ends of the filter tank are respectively connected to the vacuum pump extraction port and the equipment end valve through the vacuum clamp.

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