A sealing device for special equipment

Abstract

The present invention relates to the technical field of engine sealing, and in particular to a sealing device for special equipment, comprising an outer protective shell, including a cup body and a cover body covered on the cup body, a partition block is fixedly arranged on the bottom surface of the cover body, and the partition block is gap-fitted in the cup body, infusion grooves are symmetrically arranged on the upper ends of the two inner walls of the cup body, one of the infusion grooves is connected to a liquid inlet pipe on the outer wall of the cup body, and the other infusion groove is connected to a liquid outlet pipe on the outer wall of the cup body, and the liquid inlet pipe and the liquid outlet pipe are on the same horizontal plane of the same outer wall of the cup body, an infusion cavity is arranged in the partition block, the lower end of the infusion cavity is arranged on the bottom surface of the partition block, and the upper end of the infusion cavity is horizontally aligned with the infusion groove and is arranged on one side wall of the partition block; and a filter cartridge with an open upper end and a closed lower end arranged in the cup body, the sealing device can effectively reduce leakage problems while ensuring filtration of lubricating oil, and the device is easy to disassemble and assemble with the filter cartridge, and has good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of engine sealing, and in particular to a sealing device for special equipment. Background Art

[0002] Transport helicopters can be traced back to the 1960s. As transport helicopters have a relatively high speed, large carrying capacity, can carry construction equipment or weapons and equipment by internal or external hanging, and do not need to take off and land at airports, they are a good means of transporting troops and military equipment. They have played a huge role in all major natural disasters. Therefore, they are generally valued by countries around the world and have developed very rapidly.

[0003] The main power device of a transport helicopter is the engine. In order to ensure efficient operation of the engine and prevent system failure, a filter device is installed in the engine lubricating oil system to filter impurities in the oil, reduce oil contamination, ensure the normal operation of the lubricating oil system, and thus extend the service life of the engine. However, the existing filter device for the lubrication system has the following shortcomings when used:

[0004] 1. Since the engine has requirements such as lightweight design and compact structure, the installation position and disassembly space of the filter device are very demanding, which often leads to the inlet and outlet of the filter device being located on the same side and the same plane, and the internal flow channels of the inlet and outlet being effectively isolated and separated by parts. For example, in the existing public document CN218991738U - a small oil storage, heat exchange and filtration integrated device for an engine, under the above structural requirements, the internal sealing of the device is difficult to ensure, and the filter device will leak oil after being used for a period of time;

[0005] 2. The filter membrane assembly in the existing filter device is generally fixed by bolts, which is inconvenient for the staff to replace it. When replacing it, the staff needs to insert the tool into the inside of the device, and a large amount of oil will adhere to the surface of the tool, which is troublesome to clean;

[0006] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] In view of the design requirements of the above-mentioned existing sealing devices, it is difficult to ensure the internal sealing performance, and the problem of oil leakage of the filter device will occur after a period of use. A sealing device for special equipment is proposed.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a sealing device for special equipment, comprising an outer protective shell, a cup body and a cover body covering the cup body, a partition block is fixedly arranged on the bottom surface of the cover body, and the partition block is gap-fitted in the cup body, and infusion grooves are symmetrically opened at the upper ends of the two inner walls of the cup body, one of the infusion grooves is connected to the liquid inlet pipe on the outer wall of the cup body, and the other infusion groove is connected to the liquid outlet pipe on the outer wall of the cup body, and the liquid inlet pipe and the liquid outlet pipe are on the same outer wall of the cup body. On the same horizontal plane of the partition block, an infusion cavity is opened in the partition block, the lower end of the infusion cavity is opened on the bottom surface of the partition block, and the upper end of the infusion cavity is horizontally aligned with the infusion groove and opened on one side wall of the partition block, a groove is opened on the bottom surface of the partition block to connect the liquid inlet pipe with the groove, and the upper end of the infusion cavity is connected with the liquid outlet pipe; and a filter cylinder with an open upper end and a closed lower end arranged in the cup body, the top surface of the filter cylinder abuts against the bottom surface of the partition block at the groove position, and the lower end of the infusion cavity is located on the inner side of the filter cylinder.

[0010] As a preferred solution of the sealing device for special equipment of the present invention, the shape of the partition block is at least any one of a rectangular block and a cylindrical block.

[0011] As a preferred solution of a sealing device for special equipment of the present invention, there is a groove, and the vertical section of the groove is a right triangle, the lower end of the infusion cavity is located on the inclined surface of the groove, and the top surface of the filter cylinder is completely in contact with the inclined surface of the groove.

[0012] As a preferred solution of a sealing device for special equipment of the present invention, there are two grooves, and the vertical section of the groove is a right triangle, the two grooves are arranged on both sides of the lower end of the infusion cavity, and the top surface of the filter cylinder is in contact with the inclined surfaces of the two grooves.

[0013] The beneficial effects of the present invention are as follows: when the sealing device is filtering in a lubrication system, the partition block and the infusion cavity on the partition block can be arranged to ensure that the oil input and output positions inside and outside the filter cylinder are not located on the same horizontal plane while the inlet pipe and the outlet pipe are kept on the same water surface. In this way, the inlet and outlet positions can be isolated while maintaining a compact structural design, thereby avoiding oil leakage;

[0014] In addition, the vertical cross-section of the groove is set in a right-angled triangle, and the oil inside and outside the filter cartridge will contact the inclined surface, which can increase the contact area of ​​the oil, reduce the pressure of the oil on the cover body, and then reduce the pressure on the seal, which has a good protective effect on the seal and further avoids oil leakage.

[0015] As a preferred solution of the sealing device for special equipment of the present invention, a second sealing groove is provided on the bottom surface of the partition block at the top surface of the filter cartridge, and a sealing ring is interference-fitted in the second sealing groove and abuts against the top surface of the filter cartridge.

[0016] As a preferred embodiment of a sealing device for special equipment of the present invention, a third sealing groove is provided on the side wall of the partition block below the upper end of the infusion cavity, a fourth sealing groove is provided on the side wall of the partition block above the upper end of the infusion cavity, a second sealing strip is interference fit in the third sealing groove, and a third sealing strip is interference fit in the fourth sealing groove; when the partition block is in the shape of a rectangular block, the third sealing groove and the fourth sealing groove are symmetrically arranged in a U-shape on the same horizontal plane; when the partition block is in the shape of a cylindrical block, the third sealing groove is arc-shaped, and the fourth sealing groove is circular.

[0017] As a preferred solution of a sealing device for special equipment of the present invention, a first sealing groove is provided on the bottom surface of the cup body directly above the infusion cavity, and a first sealing strip is interference fit in the first sealing groove; threaded blind holes are provided at the four corners of the cup body, and a mounting hole is provided on the cover body coaxially with the threaded blind hole, and the aligned threaded blind hole and the mounting hole are fixed by bolts.

[0018] In view of the problem that the filter membrane assembly in the existing sealing device is inconvenient to install, the sealing device for special equipment of the present invention is further improved, wherein: it also includes a locking mechanism, the locking mechanism includes a first toothed disc, a first T-shaped column, a second T-shaped column and a linkage rod, a star-shaped block is fixedly connected to the bottom surface of the filter cartridge through the linkage column, and a first star-shaped groove for gap matching with the star-shaped block is provided on the inner bottom surface of the cup body; a first toothed disc is slidably sleeved on the linkage column, and a second star-shaped groove for gap matching with the star-shaped block is provided in the middle of the first toothed disc, and a second star-shaped groove for gap matching with the star-shaped block is provided on one side of the first toothed disc for meshing Two toothed discs, and a first T-shaped column is fixedly sleeved in the middle of the second toothed disc, the lower end of the first T-shaped column is rotatably sleeved on the bottom surface of the cup body, and the upper end of the first T-shaped column is fixedly connected with a first conical tooth, one side of the first conical tooth is meshed with a second conical tooth, the second conical tooth is fixed at one end of the second T-shaped column, and the other end of the second T-shaped column is rotatably sleeved on the side wall of the cup body, and a third toothed disc is fixedly sleeved on the side wall of the second T-shaped column, the upper end of the linkage rod is fixedly connected to the bottom surface of the partition block outside the groove, and a bar tooth meshing with the third toothed disc is provided on one side surface of the lower end of the linkage rod.

[0019] Another beneficial effect of the present invention is that when the sealing device is in use, during the process of the linkage rod moving up and down, the bar teeth will drive the third toothed disc to rotate, thereby realizing that the second T-shaped column drives the first conical tooth to rotate through the second conical tooth, and through the meshing setting of the second toothed disc and the first toothed disc, the rotation of the first toothed disc is finally realized. Through the setting of the first star-shaped groove and the second star-shaped groove, when the linkage rod moves downward, the first toothed disc rotates so that the first star-shaped groove and the second star-shaped groove are misaligned, so that the star-shaped block in the first star-shaped groove can be limited and fixed. When the linkage rod moves upward, the first toothed disc rotates in the opposite direction, so that the first star-shaped groove and the second star-shaped groove are aligned. The staff can easily remove the star-shaped block from the first star-shaped groove to realize the disassembly and replacement of the filter cartridge. When the cover body and the cup body are matched and fixed, the automatic limit fixation of the filter cartridge can be realized, and the filter cartridge can be conveniently taken out when the cover body and the cup body are separated.

[0020] As a preferred solution of the sealing device for special equipment of the present invention, a limiting ring is fixedly provided on the bottom surface of the first toothed disc along the circumferential direction, and a limiting groove for gap fitting of the limiting ring is opened on the inner bottom surface of the cup body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0022] Figure 1 The figure is a schematic diagram of the overall structure of a sealing device for special equipment.

[0023] Figure 2 For the present invention Figure 1 Vertical cross-sectional view of the structure along the direction of the liquid inlet pipe diameter.

[0024] Figure 3 For the present invention Figure 1 Vertical cross-sectional view of the structure along the axis of the liquid inlet pipe.

[0025] Figure 4 It is a schematic diagram of the cooperation among the cover body, the partition block and the linkage rod in the present invention.

[0026] Figure 5 It is a schematic diagram of the cooperation of the cup body, the filter cartridge and the locking mechanism in the present invention.

[0027] Figure 6 It is a schematic diagram of the cooperation between the cup body and the locking mechanism in the present invention.

[0028] Figure 7It is a schematic diagram of the internal structure of the cup body in the present invention.

[0029] Figure 8 It is a schematic diagram of the cooperation among the first toothed disc, the first T-shaped column and the second T-shaped column in the present invention.

[0030] Fig. 9 It is a schematic diagram of the overall structure of the filter cartridge in the present invention.

[0031] Fig.10 It is a schematic diagram of the overall structure of partition blocks of various shapes in the present invention.

[0032] Fig.11 For the present invention Fig.10 A cross-section of the structure in the vertical direction.

[0033] Fig.12 It is a vertical cross-sectional view of the partition block and the filter cartridge in the matched state in Example 2 of the present invention. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0038] Reference Figure 1 , Figure 2 and Figure 3, which is the first embodiment of the present invention, provides a sealing device for special equipment, which is installed in the lubrication system of a helicopter engine, and the filter cartridge 200 inside the outer casing 100 can filter the lubricating oil.

[0039] Specifically, it includes an outer protective shell 100, including a cup body 101 and a cover body 102 covering the cup body 101, and infusion grooves 101c are symmetrically opened at the upper ends of the two inner walls of the cup body 101, one of the infusion grooves 101c is connected to the liquid inlet pipe 101a on the outer wall of the cup body 101, and the other infusion groove 101c is connected to the liquid outlet pipe 101b on the outer wall of the cup body 101, the liquid inlet pipe 101a and the liquid outlet pipe 101b are respectively connected to the oil pipeline of the lubrication system, and the liquid inlet pipe 101a and the liquid outlet pipe 101b are on the same horizontal plane of the same outer wall of the cup body 101; and, a filter cartridge 200 with an open upper end and a closed lower end arranged in the cup body 101, the filter cartridge 200 is used to filter the incoming lubricating oil, and the structure and material composition of the filter cartridge 200 are existing technologies, so they are not described here.

[0040] Furthermore, a first sealing groove 101e is provided on the bottom surface of the cup body 101 directly above the infusion cavity 102a-2, and a first sealing strip 101e-1 is interference fit in the first sealing groove 101e. This arrangement can improve the sealing between the cup body 101 and the cover body 102; threaded blind holes 101f are provided at the four corners of the cup body 101, and a mounting hole 102e is provided on the cover body 102 coaxially with the threaded blind hole 101f. The aligned threaded blind holes 101f and the mounting holes 102e are fixed by bolts. This arrangement facilitates the detachable connection between the cup body 101 and the cover body 102.

[0041] See Figure 2 , Figure 4 and Figure 5 As shown, a partition block 102a is fixed on the bottom surface of the cover body 102, and the partition block 102a is gap-fitted in the cup body 101, and an infusion cavity 102a-2 is provided in the partition block 102a, and the lower end of the infusion cavity 102a-2 is provided on the bottom surface of the partition block 102a, and at the same time, the upper end of the infusion cavity 102a-2 is horizontally aligned with the infusion groove 101c and is provided on a side wall of the partition block 102a, and a groove is provided on the bottom surface of the partition block 102a to connect the liquid inlet pipe 101a with the groove, and the upper end of the infusion cavity 102a-2 is connected with the liquid outlet pipe 101b, and the top surface of the filter cartridge 200 is abutted against the bottom surface of the partition block 102a at the groove position, and the lower end of the infusion cavity 102a-2 is located on the inner side of the filter cartridge 200;

[0042] When the above arrangement is in use, the lubricating oil enters the groove position through the liquid inlet pipe 101a and the infusion groove 101c, and enters and fills the entire outer side of the filter cartridge 200 under the action of gravity and flow. After being filtered by the filter cartridge 200, the lubricating oil entering the interior of the filter cartridge 200 enters the infusion cavity 102a-2 through the infusion cavity 102a-2 on the bottom surface of the partition block 102a, and finally enters the infusion groove 101c through the upper end of the infusion cavity 102a-2 and is discharged from the liquid outlet pipe 101b, thereby realizing the filtering and impurity removal effect of the lubricating oil in the device.

[0043] Furthermore, a second sealing groove 102a-3 is provided on the bottom surface of the partition block 102a at the top surface of the filter cartridge 200, and a sealing ring 102b is interference fit in the second sealing groove 102a-3 and abuts against the top surface of the filter cartridge 200. This arrangement can achieve the sealing between the partition block 102a and the filter cartridge 200; a third sealing groove 102a-4 is provided on the side wall of the partition block 102a below the upper end of the infusion cavity 102a-2, and a fourth sealing groove 102a-5 is provided on the side wall of the partition block 102a above the upper end of the infusion cavity 102a-2, a second sealing strip 102c is interference fit in the third sealing groove 102a-4, and a third sealing strip 102d is interference fit in the fourth sealing groove 102a-5. This arrangement can achieve the sealing between the partition block 102a and the cup body 101, and avoid leakage at the upper end of the infusion cavity 102a-2.

[0044] The partition block 102a is in the shape of at least a rectangular block or a cylindrical block; when the partition block 102a is in the shape of a rectangular block, the third sealing groove 102a-4 and the fourth sealing groove 102a-5 are symmetrically arranged in a U-shape on the same horizontal plane, such as Fig.10 and Fig.11 When the partition block 102a is in the shape of a cylindrical block, the third sealing groove 102a-4 is arc-shaped, and the fourth sealing groove 102a-5 is circular, such as Fig.10 and Fig.11 As shown in III and IV.

[0045] Further, such as Fig.10 and Fig.11 As shown in Ⅰ and Ⅲ, a groove is provided, and the vertical cross-section of the groove is a right triangle, the lower end of the infusion cavity 102a-2 is located on the inclined surface 102a-1 of the groove, and the top surface of the filter cartridge 200 is completely in contact with the inclined surface 102a-1 of the groove, so that when the lubricating oil inside the filter cartridge 200 flows upward into the infusion cavity 102a-2, the setting of the inclined surface 102a-1 can reduce the pressure by increasing the force-bearing area. Example 2

[0046] Reference Fig.10 , Fig.11 and Fig.12 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, except that the number and positions of the grooves are changed. The purpose is to enrich the embodiments without reducing the beneficial effects and to facilitate better implementation of the device.

[0047] Specifically, Fig.10 and Fig.11 As shown in Ⅱ and Ⅳ, there are two grooves, and the vertical cross-section of the groove is a right triangle. The two grooves are arranged on both sides of the lower end of the infusion cavity 102a-2, and the top surface of the filter cartridge 200 is partially abutted against the inclined surfaces 102a-1 of the two grooves. In this way, when the lubricating oil inside the filter cartridge 200 flows upward into the infusion cavity 102a-2, the setting of the inclined surface 102a-1 can reduce the pressure by increasing the force-bearing area. Example 3

[0048] Refer to 3. Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , which is the third embodiment of the present invention, is based on any of the above embodiments, except that this embodiment is proposed to facilitate the staff to disassemble and install the filter cartridge 200, thereby reducing the staff's labor intensity and improving work efficiency.

[0049] Specifically, it also includes a locking mechanism 300, which includes a first toothed disc 301, a first T-shaped column 302, a second T-shaped column 303 and a linkage rod 304. The bottom surface of the filter cartridge 200 is fixedly connected with a star-shaped block 201 through a linkage column 201a, and a first star-shaped groove 101g for gap matching of the star-shaped block 201 is provided on the inner bottom surface of the cup body 101; the first toothed disc 301 is slidably sleeved on the linkage column 201a, and a second star-shaped groove 301b for gap matching with the star-shaped block 201 is provided in the middle of the first toothed disc 301. This setting can limit and fix the position of the star-shaped block 201 in the first star-shaped groove 101g when the first star-shaped groove 101g and the second star-shaped groove 301b are misaligned. When the first star-shaped groove 101g and the second star-shaped groove 301b are aligned, the star-shaped block 201 can be easily taken out from the first star-shaped groove 101g to achieve replacement of the filter cartridge 200;

[0050] A second toothed disc 302a is meshed with one side of the first toothed disc 301, and a first T-shaped column 302 is fixedly sleeved in the middle of the second toothed disc 302a, and the lower end of the first T-shaped column 302 is rotatably sleeved on the bottom surface of the cup body 101, and at the same time, a first conical tooth 302b is fixedly connected to the upper end of the first T-shaped column 302, and a second conical tooth 303b is meshed with one side of the first conical tooth 302b, and the second conical tooth 303b is fixedly arranged at one end of the second T-shaped column 303, and at the same time, the other end of the second T-shaped column 303 is rotatably sleeved on the side wall of the cup body 101, and a third toothed disc 303a is also fixedly sleeved on the side wall of the second T-shaped column 303, and the upper end of the linkage rod 304 is fixedly connected to the bottom surface of the partition block 102a outside the groove, and a bar tooth 304a meshing with the third toothed disc 303a is arranged on one side surface of the lower end of the linkage rod 304;

[0051] When the above arrangement is in use, when the cup body 101 is fitted on the cover body 102, the linkage rod 304 moves downward to realize that the bar tooth 304a drives the third toothed disc 303a to rotate, and the second conical tooth 303b can be rotated through the linkage of the second T-shaped column 303, and the second toothed disc 302a can be rotated through the meshing of the second conical tooth 303b and the first conical tooth 302b and the linkage of the first T-shaped column 302. The first toothed disc 301 can be rotated through the meshing setting of the first toothed disc 301 and the second toothed disc 302a, so that the misalignment between the first star groove 101g and the second star groove 301b can be realized. When the cup body 101 is separated from the cover body 102, the linkage rod 304 moves upward, so that the first star groove 101g and the second star groove 301b can be aligned.

[0052] Furthermore, a limiting ring 301a is fixedly provided on the bottom surface of the first toothed disc 301 along the circumferential direction, and a limiting groove 101d for clearance fitting of the limiting ring 301a is opened on the inner bottom surface of the cup body 101. This arrangement can realize the automatic rotation of the first toothed disc 301 on the one hand, and at the same time realize the limitation between the first toothed disc 301 and the cup body 101.

[0053] In addition, it should be noted that the components not described in detail in this article are prior art.

[0054] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0056] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sealing device for special equipment, which is installed in a lubrication system for a helicopter engine, characterized in that: include, The outer protective shell (100) comprises a cup body (101) and a cover body (102) covering the cup body (101); a partition block (102a) is fixedly provided on the bottom surface of the cover body (102), and the partition block (102a) is loosely fitted in the cup body (101); infusion grooves (101c) are symmetrically provided at the upper ends of two inner walls of the cup body (101); one of the infusion grooves (101c) is connected to a liquid inlet pipe (101a) on the outer wall of the cup body (101), and the other infusion groove (101c) is connected to a liquid outlet pipe (101b) on the outer wall of the cup body (101); and the liquid inlet pipe (101a) and the liquid outlet pipe (101b) are on the same horizontal plane of the same outer side wall of the cup body (101), the partition block (102a) is provided with an infusion cavity (102a-2), the lower end of the infusion cavity (102a-2) is provided on the bottom surface of the partition block (102a), and the upper end of the infusion cavity (102a-2) is provided on a side wall of the partition block (102a) in horizontal alignment with the infusion groove (101c), the bottom surface of the partition block (102a) is provided with a groove so that the liquid inlet pipe (101a) is connected to the groove, and the upper end of the infusion cavity (102a-2) is connected to the liquid outlet pipe (101b); and, A filter cartridge (200) with an open upper end and a closed lower end is disposed in the cup body (101), wherein the top surface of the filter cartridge (200) abuts against the bottom surface of the partition block (102a) at the position of the groove, and the lower end of the infusion cavity (102a-2) is located on the inner side of the filter cartridge (200); The lower end of the infusion cavity (102a-2) is located on the inclined surface (102a-1) of the groove, and the top surface of the filter cartridge (200) completely abuts against the inclined surface (102a-1) of the groove; A first sealing groove (101e) is provided on the bottom surface of the cup body (101) directly above the infusion cavity (102a-2), and a first sealing strip (101e-1) is interference-fitted in the first sealing groove (101e); A second sealing groove (102a-3) is provided on the bottom surface of the partition block (102a) at the top surface of the filter cartridge (200), and a sealing ring (102b) is interference-fitted in the second sealing groove (102a-3) and abuts against the top surface of the filter cartridge (200); A third sealing groove (102a-4) is provided on the side wall of the partition block (102a) below the upper end of the infusion cavity (102a-2), a fourth sealing groove (102a-5) is provided on the side wall of the partition block (102a) above the upper end of the infusion cavity (102a-2), a second sealing strip (102c) is interference-fitted in the third sealing groove (102a-4), and a third sealing strip (102d) is interference-fitted in the fourth sealing groove (102a-5).

2. A sealing device for special equipment according to claim 1, characterized in that: The partition block (102a) is in the shape of at least a rectangular block or a cylindrical block.

3. A sealing device for special equipment according to claim 2, characterized in that: The groove is provided with one, and the vertical cross section of the groove is a right triangle.

4. A sealing device for special equipment according to claim 2, characterized in that: Two grooves are provided, and the vertical cross-section of the grooves is a right triangle. The two grooves are provided on both sides of the lower end of the infusion cavity (102a-2), and the top surface of the filter cartridge (200) partially abuts against the inclined surfaces (102a-1) of the two grooves.

5. A sealing device for special equipment according to claim 2, characterized in that: When the partition block (102a) is in the shape of a rectangular block, the third sealing groove (102a-4) and the fourth sealing groove (102a-5) are symmetrically arranged in a U shape on the same horizontal plane; When the partition block (102a) is in the shape of a cylindrical block, the third sealing groove (102a-4) is in the shape of an arc, and the fourth sealing groove (102a-5) is in the shape of a circle.

6. A sealing device for special equipment according to claim 3 or 4, characterized in that: The cup body (101) is provided with threaded blind holes (101f) at four corners, and the cover body (102) is provided with mounting holes (102e) coaxially with the threaded blind holes (101f), and the aligned threaded blind holes (101f) and mounting holes (102e) are fixed by bolts.

7. A sealing device for special equipment according to claim 6, characterized in that: It also comprises a locking mechanism (300), the locking mechanism (300) comprising a first toothed disc (301), a first T-shaped column (302), a second T-shaped column (303) and a linkage rod (304); a star-shaped block (201) is fixedly connected to the bottom surface of the filter cartridge (200) via the linkage column (201a); and a first star-shaped groove (101g) for clearance fit of the star-shaped block (201) is provided on the inner bottom surface of the cup body (101); A first toothed disc (301) is slidably sleeved on the linkage column (201a), and a second star-shaped groove (301b) for gap-matching with the star-shaped block (201) is provided in the middle of the first toothed disc (301), a second toothed disc (302a) is meshedly provided on one side of the first toothed disc (301), and a first T-shaped column (302) is fixedly sleeved in the middle of the second toothed disc (302a), the lower end of the first T-shaped column (302) is rotatably sleeved on the bottom surface of the cup body (101), and the upper end of the first T-shaped column (302) is fixedly connected to a first conical tooth (302b), and the first conical tooth (302a) is fixedly sleeved on the bottom surface of the cup body (101). A second conical tooth (303b) is meshed with one side of the tooth (302b); the second conical tooth (303b) is fixedly mounted on one end of the second T-shaped column (303); the other end of the second T-shaped column (303) is rotatably sleeved on the side wall of the cup body (101); a third toothed disc (303a) is also fixedly sleeved on the side wall of the second T-shaped column (303); the upper end of the linkage rod (304) is fixedly connected to the bottom surface of the partition block (102a) outside the groove; and a bar tooth (304a) meshing with the third toothed disc (303a) is disposed on one side surface of the lower end of the linkage rod (304).

8. A sealing device for special equipment according to claim 7, characterized in that: A limiting ring (301a) is fixedly provided on the bottom surface of the first toothed disc (301) in the circumferential direction, and a limiting groove (101d) for clearance fit of the limiting ring (301a) is provided on the inner bottom surface of the cup body (101).

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