Detachable oil seal structure of pit furnace bottom

Abstract

The utility model belongs to the technical field of pit-type carburizing furnaces, and relates to a pit-type furnace bottom detachable oil seal structure which comprises a pit-type furnace body and an oil seal structure arranged at the bottom of the pit-type furnace body, the oil seal structure is connected with a lifting mechanism, and the oil seal structure can move upwards or downwards under the action of the lifting mechanism. And therefore, the sealing connection or separation with the bottom of the pit furnace body is realized. Through the design of the lifting mechanism below the oil seal structure, the detachable function between the oil seal structure and the pit type furnace body is achieved, the sealing performance between the oil seal structure and the pit type furnace body can be guaranteed through upward movement of the oil seal structure, the whole oil tank can be lowered through downward movement of the oil seal structure, and the oil seal structure is convenient to use. Therefore, sundries can be cleaned conveniently and oil can be replaced conveniently. Therefore, the device has the advantages of simple structure, convenience in operation, low cost, stability in operation and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of pit-type carburizing furnaces, and in particular relates to a detachable oil seal structure for the bottom of a pit-type furnace. Background Art

[0002] Traditional pit-type controlled atmosphere carburizing furnaces, pit-type controlled atmosphere nitriding furnaces, and electric furnaces with atmosphere requirements usually have bottomless muffle tanks sealed with furnace bottom oil sealing groove structures. The lower part of the side wall of the supporting body of the carburizing furnace and the annular sealing oil groove wall form a sealing oil groove, and the bottomless muffle tank is placed in the sealing oil groove. The lower end of the bottom-opening muffle tank is inserted into the sealing oil in the furnace bottom oil seal device, so that the bottomless tank body achieves a sealing effect, and the atmosphere in the tank cannot diffuse outside the tank body, protecting the stability of the atmosphere in the muffle tank. At the same time, the tank body expands and contracts due to heat and cold, and can freely expand and contract in the oil seal sealing oil, solving the problem of expansion and contraction deformation of the tank body.

[0003] However, in the prior art, the above-mentioned sealed oil tank is usually welded and fixed to the lower part of the side wall of the supporting body of the furnace body. It is difficult to clean and cannot be disassembled. During overhaul, the shell needs to be cut off with a cutting knife and remade before replacement. It is time-consuming and labor-intensive and cannot meet strict process requirements. Utility Model Content

[0004] The purpose of the utility model is to solve the defects and shortcomings in the prior art and to design a detachable oil seal structure for the bottom of a pit-type furnace which has the advantages of simple structure, convenient operation, low cost and stable operation.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a detachable oil seal structure for the bottom of a pit-type furnace, including a pit-type furnace body, and an oil seal structure arranged at the bottom of the pit-type furnace body, the oil seal structure is connected to a lifting mechanism, and the oil seal structure can move upward or downward under the action of the lifting mechanism, thereby realizing a sealed connection or separation with the bottom of the pit-type furnace body.

[0006] Preferably, the size of the opening above the oil seal structure is larger than the size of the bottom of the pit-type furnace body, and when the oil seal structure moves upward, the opening can be sleeved on the outside of the bottom of the pit-type furnace body.

[0007] Preferably, the lifting mechanism is connected below the oil seal structure.

[0008] Preferably, the lifting mechanism includes a plurality of screw lifting assemblies arranged at the bottom of the oil seal structure.

[0009] After adopting the above technical solution, the removable oil seal structure of the bottom of a pit furnace provided by the utility model has the following beneficial effects:

[0010] The utility model realizes the detachable function between the oil seal structure and the pit furnace body through the design of the lifting mechanism under the oil seal structure, which can ensure the sealing performance between the oil seal structure and the pit furnace body through the upward movement of the oil seal structure, and can also lower the entire oil tank through the downward movement of the oil seal structure, so as to facilitate cleaning of debris and oil change. Therefore, the utility model has the advantages of simple structure, convenient operation, low cost, stable operation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a detachable oil seal structure for the bottom of a pit-type furnace according to the utility model;

[0012] Figure 2 It is an enlarged schematic diagram of the oil seal structure of the utility model.

[0013] Among them: the pit type furnace body 1, the oil seal structure 2, the lifting mechanism 3. DETAILED DESCRIPTION

[0014] The present invention is further described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0016] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0017] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0018] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0019] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0020] The utility model discloses a detachable oil seal structure for the bottom of a pit-type furnace, such as Figure 1-2 As shown, it includes a pit-type furnace body 1, and an oil seal structure 2 arranged at the bottom of the pit-type furnace body 1, the oil seal structure 2 is connected to a lifting mechanism 3, and the oil seal structure 2 can move upward or downward under the action of the lifting mechanism 3, thereby realizing a sealed connection or separation with the bottom of the pit-type furnace body 1.

[0021] Among them, the size of the opening above the oil seal structure 2 is larger than the size of the bottom of the pit-type furnace body 1. When the oil seal structure 2 moves upward, its opening can be sleeved on the outside of the bottom of the pit-type furnace body 1. Furthermore, the lifting mechanism 3 is connected to the bottom of the oil seal structure 2, and the lifting mechanism 3 includes a plurality of screw lifting assemblies arranged at the bottom of the oil seal structure 2.

[0022] The utility model discloses a detachable oil seal structure for the bottom of a pit-type furnace. By designing a lifting mechanism 3 below the oil seal structure 2, the detachable function between the oil seal structure 2 and the pit-type furnace body 1 is realized. The upward movement of the oil seal structure 2 can ensure the sealing performance between the oil seal structure 2 and the pit-type furnace body 1, and the downward movement of the oil seal structure 2 can lower the entire oil tank, thereby facilitating the cleaning of debris and oil changing.

[0023] In summary, the utility model provides a detachable oil seal structure for the bottom of a pit-type furnace, which has the advantages of simple structure, convenient operation, low cost, stable operation, etc. It has great market value and is worthy of wide promotion and application.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A detachable oil seal structure for the bottom of a pit furnace, characterized in that: The invention comprises a pit-type furnace body (1), and an oil seal structure (2) arranged at the bottom of the pit-type furnace body (1); the oil seal structure (2) is connected to a lifting mechanism (3), and the oil seal structure (2) can move upward or downward under the action of the lifting mechanism (3), thereby realizing a sealed connection or separation with the bottom of the pit-type furnace body (1).

2. The detachable oil seal structure for the bottom of a pit-type furnace according to claim 1, characterized in that: The size of the opening above the oil seal structure (2) is larger than the size of the bottom of the pit-type furnace body (1); when the oil seal structure (2) moves upward, its opening can be sleeved on the outside of the bottom of the pit-type furnace body (1).

3. The detachable oil seal structure for the bottom of a pit-type furnace according to claim 1, characterized in that: The lifting mechanism (3) is connected below the oil seal structure (2).

4. The detachable oil seal structure for the bottom of a pit-type furnace according to claim 1, characterized in that: The lifting mechanism (3) comprises a plurality of screw lifting assemblies arranged at the bottom of the oil seal structure (2).

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