Ion nitriding furnace exhaust device

Abstract

The utility model relates to ion nitriding furnace technical field, and disclose a kind of ion nitriding furnace exhaust device, including exhaust device ontology, still include: belonging to filter tank in exhaust device ontology, the upper portion of filter tank is provided with sealing cover, filter cartridge is provided in the filter tank;Connecting assembly, the connecting assembly is set between the surface of filter tank and sealing cover;Wherein, connecting assembly includes the pressing plate set in the surface of filter tank;The utility model can effectively reduce the manpower and time consumed when personnel disassembles or connects by changing the opening and closing mode of conventional sealing cover from thread pressing plate to hasp design, simultaneously also improves the efficiency of filter cartridge replacement operation in exhaust device ontology;Utilize adjustable pressure rod of gear hole cooperation, the pressure of personnel debugging hasp structure compression can be conveniently, to ensure that the multiple connection points of sealing cover and filter tank connection place can keep constant pressure, avoid the problem of uneven pressure and affect air tightness occurs.

Description

Technical Field

[0001] This utility model relates to the field of ion nitriding furnace technology, specifically to an exhaust device for an ion nitriding furnace. Background Technology

[0002] Ion nitriding, as an advanced surface treatment process, relies heavily on the operational stability of its core equipment, the ion nitriding furnace. During the ion nitriding process, a complex atmosphere containing oil vapor, decomposition products, and other components is generated within the furnace. Therefore, a dedicated exhaust system is typically installed on one side of the furnace body. This system contains a filtration system to purify and exhaust the process gases. The core of this filtration system is a filter tank containing replaceable filter cartridges. In existing technologies, the filter tank's top cover is typically sealed using a structure of multiple threaded pressure blocks arranged in a ring along the flange edge. By tightening these pressure blocks, the axial pressure generated by the bolts presses against the sealing gasket between the top cover and the tank flange, thus achieving a seal. However, using the above method, each time the filter tank is opened or closed, the operator must use tools to loosen or tighten all the threaded blocks one by one. Due to the large number of blocks, this process is time-consuming and labor-intensive, which seriously affects the efficiency of equipment maintenance and increases the downtime for process preparation. Moreover, when tightening the blocks, it is difficult for the operator to ensure that a uniform preload is applied to all blocks. This uneven force can easily cause the top cover to tilt, resulting in excessive pressure on one side of the sealing gasket while the other side is not tightened enough, thus forming a leakage point on the sealing surface. Utility Model Content

[0003] The purpose of this invention is to provide an exhaust device for an ion nitriding furnace to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an exhaust device for an ion nitriding furnace, comprising an exhaust device body and further comprising: a filter tank belonging to the exhaust device body, wherein a sealing cover is provided on the top of the filter tank and a filter element is provided in the filter tank; A connecting assembly disposed between the surfaces of the filter tank and the sealing cap; The connecting component includes a pressure plate disposed on the surface of the filter tank, a pressure rod disposed above the pressure plate, a stop hole being opened on the surface of the pressure plate, and the lower end of the pressure rod being inserted into the stop hole.

[0005] Preferably, the connecting assembly further includes a connecting hook disposed on the edge of the sealing cover, and the pressure rod is hooked onto the surface of the connecting hook.

[0006] Preferably, the horizontal middle section and the upper middle section of the pressure rod are both designed with a discontinuous structure, and a telescopic rod is provided in the middle of the pressure rod. The surface of the telescopic rod is provided with springs at both ends that are fixed to the pressure rod.

[0007] Preferably, the upper middle part of the pressure rod is provided with a flexible section, which is used for micro-adjustment of the opening and closing angle of the pressure rod.

[0008] Preferably, the stop holes are provided in two sets and symmetrically arranged on both sides of the pressure plate, and the stop holes are arranged in a linear array of multiple holes.

[0009] Preferably, the connecting assembly further includes a connecting seat disposed on the surface of the filter tank, and the pressure plate is movably connected to the connecting seat via a rotating shaft.

[0010] Preferably, a torsion spring is provided on the rotating surface of the pressure plate and in the connecting seat, and the two ends of the torsion spring abut against the connecting seat and the pressure plate respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention changes the traditional opening and closing method of the sealing cover from a threaded pressure plate to a snap-on design, which can effectively reduce the manpower and time spent on disassembly or connection, and also improve the efficiency of filter element replacement in the exhaust device body. By using the position hole and the adjustable pressure rod, it is easy for personnel to adjust the pressure when the snap-on structure is tightened, thereby ensuring that the multiple connection points at the connection between the sealing cover and the filter canister can maintain a constant pressure, avoiding the problem of uneven pressure affecting airtightness. Attached Figure Description

[0012] Figure 1 A schematic diagram of a preferred embodiment of the ion nitriding furnace exhaust device provided by this utility model; Figure 2 A schematic diagram of the internal structure of the filter tank provided by this utility model; Figure 3 A schematic diagram of the structure of the connecting component provided by this utility model; Figure 4 A schematic diagram of the structure of the pressure plate and the stop hole provided by this utility model; Figure 5 A schematic diagram of the structure of the pressure bar provided by this utility model.

[0013] In the diagram: 100, exhaust device body; 110, filter canister; 120, sealing cover; 130, filter element; 200, connecting assembly; 210, pressure plate; 211, pressure rod; 212, connecting hook; 213, connecting seat; 214, torsion spring; 220, gear hole; 221, flexible section; 222, spring; 223, telescopic rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-5 As shown, an exhaust device for an ion nitriding furnace includes an exhaust device body 100 and a filter tank 110 belonging to the exhaust device body 100. A sealing cover 120 is provided on the top of the filter tank 110, and a filter element 130 is provided in the filter tank 110. As an advanced surface treatment process, the operational stability of the core equipment, the ion nitriding furnace, is crucial. During the ion nitriding process, a complex atmosphere containing oil vapor, decomposition products, and other components is generated inside the furnace. Therefore, a dedicated exhaust device body 100 is usually installed on one side of the furnace. This device is equipped with a filtration system to purify and exhaust the process gas. The core of this filtration system is a filter canister 110 containing a replaceable filter element 130. The filter element 130 can intercept, filter, and adsorb harmful substances before they enter the vacuum pump and the atmosphere, ensuring that the exhaust gas is clean. A connecting component 200 is disposed between the surfaces of the filter tank 110 and the sealing cover 120. The connecting component 200 includes a pressure plate 210 disposed on the surface of the filter tank 110, a pressure rod 211 disposed above the pressure plate 210, a stop hole 220 opened on the surface of the pressure plate 210, and the lower end of the pressure rod 211 inserted into the stop hole 220. The connecting assembly 200 also includes a connecting seat 213 disposed on the surface of the filter tank 110, and the pressure plate 210 is movably connected to the connecting seat 213 via a rotating shaft; When personnel need to connect and seal the filter tank 110 and the sealing cover 120, first close the sealing cover 120 at the opening of the filter tank 110 to ensure that the sealing gasket is in place. Then, the personnel can move the pressure plate 210 to a horizontal position and connect the pressure rod 211 to the connecting hook 212. Then, press the pressure plate 210 down in the opposite direction. At this time, the pressure plate 210 can pull the pressure rod 211 down through the rotating shaft. The pressure rod 211 pulls down the connecting hook 212, which can enhance the tightness between the sealing cover 120 and the filter tank 110. A torsion spring 214 is provided on the rotating shaft surface of the pressure plate 210 and in the connecting seat 213. The two ends of the torsion spring 214 abut against the connecting seat 213 and the pressure plate 210 respectively. When the pressure plate 210 is pressed down, the torsion spring 214 is squeezed by the pressure plate 210 and expands. At this time, the torsion spring 214 will store elastic potential energy. When the sealing cover 120 needs to be opened for maintenance, simply push the pressure plate 210 upwards. Once it passes the balance point of the torsion spring 214, the elastic potential energy stored in the torsion spring 214 will be released instantly, automatically lifting the pressure plate 210 to the preset opening angle. At the same time, the pressure rod 211 will disengage from the connecting hook 212. The locking state can be released in a few seconds without any tools, which greatly improves maintenance efficiency and operational safety. The connecting assembly 200 also includes a connecting hook 212 disposed on the edge of the sealing cover 120, and the pressure rod 211 hooks onto the surface of the connecting hook 212; The horizontal middle and upper middle parts of the pressure rod 211 are both designed with a discontinuous structure. A telescopic rod 223 is provided in the middle of the pressure rod 211. A spring 222 is provided on the surface of the telescopic rod 223, with both ends fixed to the pressure rod 211. When personnel need to adjust the pressure of the buckle structure, the flexible section 221 in the upper middle part of the pressure rod 211 can be used to move its two ends to opposite sides, so that the two ends of the horizontal middle part of the pressure rod 211 disengage from the stop hole 220. Then, its end can be moved down into the stop hole 220 below and locked. Thus, when the pressure plate 210 is pressed down, the pressure rod 211 can be used to apply greater pressure to the filter tank 110 and the sealing cover 120. When the sealing gasket wears or undergoes permanent compression deformation due to long-term use, the preload will decrease. At this time, the operator can easily move the lower end of the pressure rod 211 out of the current stop hole 220 and insert it into a deeper stop hole 220 by using the fine adjustment capability provided by the flexible section 221 in the upper middle part of the pressure rod 211. This operation is equivalent to shortening the resistance arm of the lever. Therefore, under the same operating force, the shorter resistance arm will generate a greater output lifting force at the upper end of the pressure rod 211, thereby effectively increasing the clamping force on the sealing cover 120, achieving precise compensation for the preload, and ensuring the long-term effectiveness of the seal. In order to maintain pressure balance between the filter tube and the sealing cap 120, the positions of the multiple connecting components 200 need to be kept consistent during the above-mentioned debugging. A flexible section 221 is provided in the upper middle part of the pressure rod 211. The flexible section 221 is used for micro-adjustment of the opening and closing angle of the pressure rod 211. The flexible section 221 in the upper middle part of the pressure rod 211 allows the hook part of the pressure rod 211 to deflect slightly, ensuring that it makes surface contact with the connecting hook 212 rather than point contact, so that the clamping force can be evenly distributed, effectively preventing uneven force on the sealing surface caused by processing or assembly errors, and fundamentally eliminating local leakage. Two sets of stop holes 220 are provided and symmetrically arranged on both sides of the pressure plate 210. Multiple stop holes 220 are arranged in a linear array. The above design allows personnel to easily adjust the connection pressure between the filter tube and the sealing cover 120 according to different sealing requirements. Working principle: By changing the opening and closing method of the traditional sealing cover 120 from the threaded pressure plate 210 to a snap-on design, the manpower and time spent on disassembly or connection can be effectively reduced, and the efficiency of filter element 130 replacement in the exhaust device body 100 can also be improved. With the use of the position hole 220 and the adjustable pressure rod 211, it is convenient for personnel to adjust the pressure when the snap-on structure is tightened, thereby ensuring that the multiple connection points at the connection between the sealing cover 120 and the filter canister 110 can maintain a constant pressure, avoiding the problem of uneven pressure affecting airtightness.

[0016] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust device for an ion nitriding furnace, comprising an exhaust device body (100), characterized in that, Also includes: A filter canister (110) belonging to the exhaust device body (100) is provided with a sealing cover (120) on the top of the filter canister (110) and a filter element (130) is provided in the filter canister (110). A connecting assembly (200) is disposed between the surfaces of the filter tank (110) and the sealing cap (120); The connecting assembly (200) includes a pressure plate (210) disposed on the surface of the filter tank (110), a pressure rod (211) disposed above the pressure plate (210), a stop hole (220) is opened on the surface of the pressure plate (210), and the lower end of the pressure rod (211) is inserted into the stop hole (220).

2. The exhaust device for an ion nitriding furnace according to claim 1, characterized in that: The connecting assembly (200) further includes a connecting hook (212) disposed on the edge of the sealing cap (120), and the pressure rod (211) hooks onto the surface of the connecting hook (212).

3. The exhaust device for an ion nitriding furnace according to claim 1, characterized in that: The horizontal middle and upper middle parts of the pressure rod (211) are both designed with a discontinuity. A telescopic rod (223) is provided in the middle of the pressure rod (211). The surface of the telescopic rod (223) is provided with springs (222) that are fixed to the pressure rod (211) at both ends.

4. The exhaust device for an ion nitriding furnace according to claim 1, characterized in that: A flexible section (221) is provided in the upper middle part of the pressure rod (211), and the flexible section (221) is used to adjust the opening and closing angle of the pressure rod (211) slightly.

5. The exhaust device for an ion nitriding furnace according to claim 1, characterized in that: The gear holes (220) are provided in two sets and symmetrically arranged on both sides of the pressure plate (210), and the gear holes (220) are arranged in a linear array.

6. The exhaust device for an ion nitriding furnace according to claim 1, characterized in that: The connecting assembly (200) also includes a connecting seat (213) disposed on the surface of the filter tank (110), and the pressure plate (210) is movably connected to the connecting seat (213) via a rotating shaft.

7. The exhaust device for an ion nitriding furnace according to claim 1, characterized in that: A torsion spring (214) is provided on the rotating surface of the pressure plate (210) and in the connecting seat (213), and the two ends of the torsion spring (214) abut against the connecting seat (213) and the pressure plate (210) respectively.

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