Quick sealing valve for special environments

Abstract

The utility model relates to quick sealing valve technical field, concretely relates to a quick sealing valve for special environment, including installation main part, installation main part is the hollow cavity structure of the through -type of upper and lower no face, front and rear are provided with round tank, the front end structure of installation main part is recessed inward, forms the bellows flange sticking surface, the both ends round tank of installation main part all are fixed with the shaft sleeve, the shaft sleeve combination is inserted and is equipped with the bellows shaft, one end of bellows shaft is fixedly connected with bellows flange, and the other end is provided with bellows end thread, bellows flange and bellows flange sticking surface can be closely stuck, the tail end of bellows shaft and locking shaft are fixedly connected, bellows end thread and floating joint are engaged fixedly, floating joint and the output end of pneumatic cylinder keep engagement fixed, the material quality definition of part and the selection suitable standard part replace the conventional buffer mechanism, guarantee mechanism movement reliability while, reduced the design cost and maintenance cost of mechanism.

Description

Technical Field

[0001] This utility model relates to the field of quick-sealing valve technology, specifically to a quick-sealing valve for special environments. Background Technology

[0002] In many special environments (such as high temperature, high pressure, corrosive media, etc.), there are extremely high requirements for the sealing performance, response speed and service life of valves;

[0003] In existing technical solutions, valve sealing surfaces need to be in close contact. However, due to rapid opening and closing, a buffer structure needs to be designed at the contact surface. Usually, such buffer structures are achieved through springs, buffer materials, or some buffer mechanisms.

[0004] The former is due to the fact that the spring will gradually age after long-term use, which will lead to either the sealing surface not being able to fit tightly or the spring performance failing, resulting in buffer failure, and in severe cases, even damage to the entire mechanism. In addition to aging problems, the buffer material also has the problem of not being able to be used for a long time in special gas environments, so the replacement frequency is relatively high.

[0005] If a buffer mechanism is used, the cost is too high and maintenance is inconvenient. At the same time, since it is the initial movement process, the requirements for the machining and installation accuracy of the mechanism parts are relatively high. In addition, in order to ensure smooth reciprocating motion, it may even be necessary to use guide rails and sliders for matching design, which increases the cost. Utility Model Content

[0006] Technical problems to be solved

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a quick-sealing valve for special environments, which can effectively solve the problems of spring and buffer mechanism in the existing technology.

[0008] Technical solution

[0009] This utility model provides a quick-sealing valve for special environments, including an installation body. The installation body is a through-hole hollow cavity structure with no upper or lower surfaces and circular grooves at the front and rear. The front end of the installation body is recessed inward to form a bellows flange mating surface. Bushings are fixed in the circular grooves at both the front and rear ends of the installation body. A bellows shaft is inserted through the bushing assembly. One end of the bellows shaft is fixedly connected to the bellows flange, and the other end has a bellows end thread. The bellows flange and the bellows flange mating surface can fit tightly together. The tail end of the bellows shaft is fixedly sleeved and connected to a locking shaft. The bellows end thread engages and is fixed to a floating joint. The floating joint is engaged and fixed to the output end of the cylinder. The upper and lower ends of the installation body are fixed to the outer surface of the cover plate by locking screws. The top end of the installation body, the front end of the installation body, and the top end of the bushings are all provided with oil filling ports, which are all sealed by oil filling joints.

[0010] Furthermore, the front end of the mounting body is integrally fixed with a flange structure, and multiple sets of mounting and fixing holes are opened on the side wall of the structure, and the corrugated pipe flange mating surface is recessed into the flange structure.

[0011] Furthermore, a groove is provided in the middle of the locking shaft, and a sealing ring is fixedly installed in the groove. A bellows is sleeved on the outside of the bellows shaft, and the two ends of the bellows are fixedly connected to the bellows shaft and the side wall of the bellows flange, respectively.

[0012] Furthermore, the locking shaft is in interference contact with the outer wall of the bellows shaft via a sealing ring.

[0013] Furthermore, the floating joint, locking shaft, and bellows end threads are all located within the mounting body.

[0014] Beneficial effects

[0015] In this invention, the entire mechanism is locked and fixed to the mounting position on the required equipment via mounting holes on the main body. When the cylinder reciprocates, it drives the bellows shaft to reciprocate, thereby achieving rapid sealing and opening of the valve. The floating joint is a standard part, ensuring that high-precision machining of parts is avoided while achieving reciprocating motion. The internal friction factor of the bushing is low; lubricating oil is injected through the oil injection joint to further improve its lubrication, ensuring the overall reliability of the mechanism's movement. Rapid sealing is achieved by the cylinder driving the bellows. The bellows, through a special material definition, ensures both long-term use in special environments and a long service life under rapid, repeated use. By defining the material of the parts and selecting suitable standard parts to replace conventional buffer mechanisms, the design and maintenance costs of the mechanism are reduced while ensuring its operational reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 3 This is one of the exploded views of the structure in this utility model;

[0020] Figure 4 This is the second exploded view of the structure of this utility model.

[0021] The labels in the diagram represent: 1. Cylinder; 2. Floating joint; 3. Locking shaft; 4. Sealing ring; 5. Bushing; 6. Cover plate; 7. Locking screw; 8. Oil injection joint; 9. Mounting body; 10. Bellows; 11. Bellows flange; 12. Bellows flange mating surface; 13. Bellows end thread; 14. Bellows shaft; 15. Mounting fixing hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] The present invention will be further described below with reference to the embodiments.

[0024] Example: A quick-sealing valve for special environments, see attached document. Figure 1 -Appendix Figure 4The system includes a mounting body 9, which is a through-hole hollow cavity structure with no upper or lower surfaces and circular grooves at the front and back. The front end of the mounting body 9 is recessed inward to form a bellows flange mating surface 12. Bushings 5 ​​are fixed in the circular grooves at both the front and back ends of the mounting body 9. A bellows shaft 14 is inserted through the bushing 5 assembly. One end of the bellows shaft 14 is fixedly connected to the bellows flange 11, and the other end has a bellows end thread 13. The bellows flange 11 and the bellows flange mating surface 12 can fit tightly together. The tail end of the bellows shaft 14 is fixedly sleeved and connected to the locking shaft 3. The bellows end thread 13 is engaged and fixed with the floating joint 2. The floating joint 2 is engaged and fixed with the output end of the cylinder 1. The upper and lower ends of the mounting body 9 are fixed to the outer surface of the cover plate 6 by locking screws 7. The top end of the mounting body 9, the front end structure of the mounting body 9, and the top end of the bushing 5 are all provided with oil inlets, which are all closed by oil inlets 8.

[0025] The bellows 10, bellows flange 11, bellows shaft 14, shaft sleeve 5, bellows flange mating surface 12, shaft sleeve 5, locking shaft 3, sealing ring 4, floating joint 2, and cylinder 1 are connected and fixed in that order. The middle part is placed inside the mounting body 9. Lubricating medium is added through the oil injection ports opened at the top of the mounting body 9, the mating flange, and the shaft sleeve 5. This reduces the frictional resistance during movement, ensures the smoothness and reliability of the overall movement of the mechanism, and avoids problems such as movement jamming.

[0026] The front end of the mounting body 9 is integrally fixed with a flange structure, and multiple sets of mounting holes 15 are opened on the side wall of this structure. The bellows flange mating surface 12 is recessed within the flange structure. The entire mechanism is locked and fixed to the mounting position on the required equipment through the mounting holes 15 on the mounting body 9. When the cylinder 1 reciprocates, it drives the bellows shaft 14 to reciprocate, thereby achieving rapid sealing and opening of the valve. The floating joint 2 is a standard part, which can ensure that high-precision machining of parts is avoided while achieving reciprocating motion. The internal friction factor of the bushing 5 is small. Lubricating oil is injected through the oil injection joint 8 to further improve its lubrication, ensuring the overall motion reliability of the mechanism. Rapid sealing is achieved by the cylinder 1 driving the bellows 10.

[0027] A groove is provided in the middle of the locking shaft 3, and a sealing ring 4 is fixedly installed in the groove. A bellows 10 is sleeved on the outside of the bellows shaft 14, and the two ends of the bellows 10 are fixedly connected to the side wall of the bellows shaft 14 and the bellows flange 11, respectively. By reasonably defining the material of the parts and selecting standard parts (such as floating joint 2) to replace the conventional buffer mechanism, not only is the requirement for high-precision machining of parts reduced, thereby reducing manufacturing costs, but the overall design structure is also simplified, reducing design difficulty and maintenance costs.

[0028] The reciprocating motion of cylinder 1 drives the bellows shaft 14 to reciprocate, thereby quickly sealing and opening the valve, improving the valve's response speed and meeting the requirements of rapid operation. Oil inlets are provided at the top of the mounting body 9, the front structure of the mounting body 9, and the top of the bushing 5, and are all sealed by oil inlet connectors 8. This multi-position oil inlet design allows for the injection of lubricating oil from multiple points when lubricating key moving parts such as the bushing 5, ensuring comprehensive lubrication. The oil inlet connectors 8 facilitate oil injection and daily sealing protection, simplifying future maintenance and further ensuring the reliability of the mechanism's movement. The front end of the mounting body 9 is integrally fixed with a flange structure, and multiple sets of mounting holes 15 are provided on the side wall of this structure. These mounting holes 15 securely lock the valve to the equipment to be installed, enhancing the overall stability of the valve during operation and preventing loosening due to vibration or other factors that could affect sealing and operation.

[0029] The locking shaft 3 is in interference contact with the outer wall of the bellows shaft 14 through the sealing ring 4; the floating joint 2, the locking shaft 3 and the bellows end thread 13 are all located inside the mounting body 9; the bellows shaft 14 is fixed with a bellows 10 structure at its end, which can not only work stably for a long time in special environments, but also meet the requirements of rapid and repeated use, effectively extending the service life of the valve and ensuring reliable operation in harsh environments.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-sealing valve for special environments, characterized in that, The system includes an installation body (9), which is a through-hole hollow cavity structure with no top or bottom surfaces and circular grooves at the front and back. The front end of the installation body (9) is recessed inward to form a bellows flange mating surface (12). Bushings (5) are fixed in the circular grooves at both the front and back ends of the installation body (9). A bellows shaft (14) is inserted through the bushings (5). One end of the bellows shaft (14) is fixedly connected to the bellows flange (11), and the other end is provided with a bellows end thread (13). The bellows flange (11) and the bellows flange... The mating surface (12) can be tightly fitted. The tail end of the bellows shaft (14) is fixedly sleeved and connected to the locking shaft (3). The end thread (13) of the bellows is engaged and fixed with the floating joint (2). The floating joint (2) is engaged and fixed with the output end of the cylinder (1). The upper and lower ends of the mounting body (9) are fixed to the outer surface of the cover plate (6) by the locking screw (7). The top of the mounting body (9), the front end structure of the mounting body (9) and the top of the bushing (5) are all provided with oil inlets, and all are closed by the oil inlet joint (8).

2. The quick-sealing valve for special environments according to claim 1, characterized in that, The front end of the mounting body (9) is integrally fixed with a flange structure, and multiple sets of mounting and fixing holes (15) are opened on the side wall of the structure, and the corrugated pipe flange mating surface (12) is recessed into the flange structure.

3. The quick-sealing valve for special environments according to claim 1, characterized in that, The locking shaft (3) has a groove extending outward from the middle, and a sealing ring (4) is fixedly installed in the groove. A bellows (10) is sleeved on the outside of the bellows shaft (14), and both ends of the bellows (10) are fixedly connected to the side wall of the bellows shaft (14) and the bellows flange (11), respectively.

4. The quick-sealing valve for special environments according to claim 1, characterized in that, The locking shaft (3) is in interference contact with the outer wall of the bellows shaft (14) through the sealing ring (4).

5. A quick-sealing valve for special environments according to claim 4, characterized in that, The floating joint (2), locking shaft (3) and bellows end thread (13) are all located inside the mounting body (9).

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