Corrugated pipe sealing valve with corrugated pipe structure convenient to replace

Abstract

The utility model discloses a corrugated pipe sealing valve convenient to replace a corrugated pipe structure, which comprises a valve body, a valve core is rotatably connected in the middle of the inside of the valve body, a valve rod is in threaded connection with the middle of the upper end of the valve core, the top of the valve rod penetrates through a sealing seat and is connected with a connecting rod, and the top of the connecting rod penetrates through a valve cover and is connected with a hand wheel. The inner side and the outer side of the lower end of the valve cover are in threaded connection with the outer side of the upper end of the valve body and the inner side of the protective cylinder respectively, a corrugated pipe is arranged in the valve cover and sleeved on the outer side of the valve rod, and the top and the bottom of the corrugated pipe are connected with the inner top end of the valve cover and the upper end of the sealing seat respectively. According to the corrugated pipe sealing valve with the corrugated pipe structure convenient to replace, the lower sealing sleeve and the upper sealing sleeve are arranged, so that the sealing performance between the valve rod and the corrugated pipe is good, the valve rod is connected with the sealing seat through a clamping block and a fixing bolt, and the valve cover is connected through an inserting block and a positioning magnetic block, so that the bottom and the top of the corrugated pipe are convenient to mount and dismount; therefore, when the corrugated pipe needs to be replaced, operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to bellows sealing valves, in particular to a bellows sealing valve with a bellows structure that is easy to replace. Background Art

[0002] Valves are control components in fluid delivery systems and have functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. Valves are widely used in industrial production and all walks of life and are indispensable devices for domestic water pipelines and industrial fluid pipelines.

[0003] After searching, it is found that the bellows sealing valve in the prior art is typically such as the bellows sealing valve with publication number CN2531214Y. It has a valve body, a bellows is arranged in the valve body, a valve stem is arranged in the bellows, one end of the valve stem is sealed with the bellows, and then connected to the clutch, a flat bearing is arranged in the clutch, and it is connected to the handwheel screw through the clutch, a handwheel is installed on the handwheel screw, and the other end of the bellows is sealed with the valve body. The advantages of the utility model are: 1) It proposes to use the valve stem and the bellows, the bellows and the valve body to be effectively (welded) connected to each other, and the handwheel screw and the valve stem are combined through the clutch. The handwheel screw is rotated to drive the valve stem and the bellows to move up and down, ensuring that the flowing medium in the valve does not leak.

[0004] To sum up, when the existing bellows sealed valve is in use, the bellows arranged inside moves up and down with the valve stem, which causes the bellows to be easily worn, affecting the sealing performance. At the same time, the bellows and the valve body are effectively (welded) connected to each other, making it difficult to replace the bellows if it is damaged, reducing the practicality of use. In view of the above problems, it is necessary to improve the existing equipment. Utility Model Content

[0005] The utility model aims to provide a bellows-sealed valve with an easy-to-replace bellows structure, so as to solve the problem that, when the existing bellows-sealed valve is in use, the bellows arranged inside moves up and down with the valve stem, causing the bellows to be easily worn, thereby affecting the sealing performance; at the same time, the bellows and the valve body are effectively (welded) connected to each other, making it difficult to replace the bellows after it is damaged, thereby reducing the practicality of use.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a bellows sealing valve with a bellows structure that is easy to replace, comprising a valve body, a nameplate is installed in the middle of the front of the valve body,

[0007] A valve core is rotatably connected to the middle of the valve body, and a sealing ring is snap-connected to the middle of the valve core, and a valve stem is threadedly connected to the middle of the upper end of the valve core. The top of the valve stem passes through the sealing seat to be connected to the connecting rod, and the top of the connecting rod passes through the valve cover to be connected to the handwheel, and the inner and outer sides of the lower end of the valve cover are threadedly connected to the outer side of the upper end of the valve body and the inner side of the protective tube respectively, a positioning retaining ring is welded to the outer side of the valve cover, and the lower end of the positioning retaining ring is fitted with the upper end of the protective tube, and a bellows is arranged inside the valve cover, the bellows is sleeved on the outside of the valve stem, and the top and bottom of the bellows are respectively connected to the top of the inner side of the valve cover and the upper end of the sealing seat.

[0008] Preferably, the sealing seat is threadedly connected to the inner side of the upper end of the valve body, and the sealing seat is a T-shaped structure;

[0009] By adopting the above technical solution, the sealing performance of the connection between the valve body and the valve stem is improved.

[0010] Preferably, the protective sleeve is arranged on the outer side of the middle of the upper end of the valve body, and a sealing filler is filled between the inner side of the protective sleeve and the valve body;

[0011] By adopting the above technical solution, the sealing performance of the connection between the valve cover, the valve body and the protective tube is improved.

[0012] Preferably, a lower sealing sleeve is arranged between the inner side of the lower end of the bellows and the valve stem, and a plurality of snap-fit ​​blocks are equidistantly arranged at the bottom of the bellows, and the snap-fit ​​blocks are snap-fitted and connected with the snap-fit ​​grooves correspondingly opened at the upper end of the sealing seat, and the fixing bolts arranged on the side of the sealing seat penetrate the sealing seat and are connected with the snap-fit ​​blocks and the inside of the sealing seat.

[0013] Preferably, an upper sealing sleeve is arranged between the inner side of the upper end of the bellows and the valve stem, and a plurality of plug-in blocks are equidistantly arranged at the upper end of the bellows, and the plug-in blocks are snap-connected with the corresponding plug-in grooves opened on the inner side of the valve cover. The plug-in blocks are made of metal, and the top of the plug-in blocks and the positioning magnet installed at the upper end of the plug-in groove are magnetically connected.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the bellows sealing valve with a bellows structure that is easy to replace,

[0015] (1) In order to solve the problem that the bellows is easily worn and the sealing performance is affected due to the up and down movement of the bellows arranged inside the existing bellows sealing valve when in use, the present application provides a sealing seat, a positioning retaining ring, a protective tube and a sealing packing for use in combination, so that the sealing performance of the connection between the valve body, the valve stem and the valve cover is better, so that the bellows will not be reduced in the event of wear and damage to the bellows;

[0016] (2) In order to solve the problem that the bellows and the valve body are effectively (welded) connected to each other during use in the existing bellows-sealed valve, which makes it difficult to replace the bellows after it is damaged, thereby reducing the practicality of use, the present application provides a lower sealing sleeve and an upper sealing sleeve to ensure better sealing between the valve stem and the bellows. At the same time, the valve stem is connected to the sealing seat through a snap block and a fixing bolt, which facilitates the installation and disassembly of the bottom of the bellows. The valve stem is connected to the valve cover through a plug-in block and a positioning magnetic block, which facilitates the installation and disassembly of the top of the bellows, thereby facilitating the operation when the bellows needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 3 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0020] Figure 4 For this utility model Figure 2 The enlarged structural diagram at C in the middle;

[0021] Figure 5 This is a front view structural schematic diagram of the utility model.

[0022] In the figure: 1. valve body; 101. nameplate; 2. valve core; 3. sealing ring; 4. valve stem; 5. sealing seat; 6. connecting rod; 7. valve cover; 8. handwheel; 9. positioning retaining ring; 10. protective cylinder; 11. bellows; 12. lower sealing sleeve; 13. clamping block; 14. fixing bolt; 15. upper sealing sleeve; 16. plug-in block; 17. positioning magnetic block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides a technical solution: a bellows sealing valve which is easy to replace the bellows structure, according to Figure 1 , Figure 2 and Figure 5As shown, a nameplate 101 is installed in the middle of the front of the valve body 1, a valve core 2 is rotatably connected to the middle of the inside of the valve body 1, and a sealing ring 3 is snap-connected to the middle of the inside of the valve core 2, and at the same time, a valve stem 4 is threadedly connected to the middle of the upper end of the valve core 2, and the top of the valve stem 4 passes through a sealing seat 5 and is connected to a connecting rod 6, the sealing seat 5 is threadedly connected to the inner side of the upper end of the valve body 1, and the sealing seat 5 is a T-shaped structure, and the top of the connecting rod 6 passes through a valve cover 7 and is connected to a handwheel 8, and at the same time, the inner and outer sides of the lower end of the valve cover 7 are threadedly connected to the outer side of the upper end of the valve body 1 and the inner side of a protective cylinder 10, respectively, a positioning retaining ring 9 is welded to the outer side of the valve cover 7, and the lower end of the positioning retaining ring 9 is fitted with the upper end of the protective cylinder 10, so as to facilitate sealing and protecting the upper end of the protective cylinder 10, and the protective cylinder 10 is arranged on the outer side of the middle of the upper end of the valve body 1, and a sealing filler is filled between the inner side of the protective cylinder 10 and the valve body 1 to further improve the sealing effect.

[0025] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a bellows 11 is provided inside the valve cover 7 , the bellows 11 is sleeved on the outside of the valve stem 4 , and the top and bottom of the bellows 11 are connected to the top of the valve cover 7 and the upper end of the sealing seat 5 respectively.

[0026] To further illustrate, a lower sealing sleeve 12 is arranged between the inner side of the lower end of the bellows 11 and the valve stem 4, and a plurality of snap-fit ​​blocks 13 are equidistantly arranged at the bottom of the bellows 11. At the same time, the snap-fit ​​blocks 13 are snap-fitted and connected with the snap-fit ​​grooves correspondingly opened at the upper end of the sealing seat 5. The fixing bolts 14 arranged on the side of the sealing seat 5 penetrate the sealing seat 5 and the snap-fit ​​blocks 13 and are connected with the inside of the sealing seat 5, so as to facilitate the installation and disassembly of the bottom of the lower end of the bellows 11.

[0027] To further explain, an upper sealing sleeve 15 is arranged between the inner side of the upper end of the bellows 11 and the valve stem 4, and a plurality of plug-in blocks 16 are equidistantly arranged at the upper end of the bellows 11. At the same time, the plug-in blocks 16 are snap-connected with the corresponding plug-in grooves opened on the inner side of the valve cover 7. The plug-in blocks 16 are made of metal, and the top of the plug-in block 16 is magnetically connected to the positioning magnet 17 installed at the upper end of the plug-in groove, which facilitates the installation and disassembly of the top of the upper end of the bellows 11.

[0028] During use, when the bellows 11 is damaged, first turn the hand wheel 8 to remove the hand wheel 8, then turn the valve cover 7 to separate the valve cover 7 from the protective tube 10 and the upper end of the valve body 1, then separate the plug-in block 16 at the top of the bellows 11 from the positioning magnetic block 17, remove the valve cover 7, then turn the fixing bolt 14 to separate the fixing bolt 14 from the sealing seat 5 and the locking block 13, and then remove the bellows 11 from the outside of the valve stem 4 for replacement.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bellows-sealed valve with a bellows structure that is easy to replace, comprising a valve body (1), a nameplate (101) being installed in the middle of the front of the valve body (1), characterized in that: A valve core (2) is rotatably connected to the middle of the valve body (1), and a sealing ring (3) is snap-connected to the middle of the valve core (2). A valve stem (4) is threadedly connected to the middle of the upper end of the valve core (2). The top of the valve stem (4) passes through the sealing seat (5) to be connected to the connecting rod (6), and the top of the connecting rod (6) passes through the valve cover (7) to be connected to the hand wheel (8). The inner and outer sides of the lower end of the valve cover (7) are threadedly connected to the outer side of the upper end of the valve body (1) and the inner side of the protective tube (10) respectively. A positioning retaining ring (9) is welded to the outer side of the valve cover (7), and the lower end of the positioning retaining ring (9) is fitted with the upper end of the protective tube (10). A bellows (11) is arranged inside the valve cover (7), and the bellows (11) is sleeved on the outer side of the valve stem (4). The top and bottom of the bellows (11) are connected to the top of the valve cover (7) and the upper end of the sealing seat (5).

2. The bellows-sealed valve with an easily replaceable bellows structure as claimed in claim 1, characterized in that: The sealing seat (5) is threadedly connected to the inner side of the upper end of the valve body (1), and the sealing seat (5) is a T-shaped structure.

3. The bellows sealing valve with an easily replaceable bellows structure as claimed in claim 1, characterized in that: The protective tube (10) is arranged on the outer side of the middle of the upper end of the valve body (1), and a sealing filler is filled between the inner side of the protective tube (10) and the valve body (1).

4. The bellows-sealed valve with an easily replaceable bellows structure as claimed in claim 1, characterized in that: A lower sealing sleeve (12) is arranged between the inner side of the lower end of the bellows (11) and the valve stem (4), and a plurality of snap-fit ​​blocks (13) are equidistantly arranged at the bottom of the bellows (11). The snap-fit ​​blocks (13) are snap-fitted and connected with snap-fit ​​grooves correspondingly provided at the upper end of the sealing seat (5). The fixing bolts (14) arranged on the side of the sealing seat (5) penetrate the sealing seat (5) and the snap-fit ​​blocks (13) and are connected with the inside of the sealing seat (5).

5. The bellows-sealed valve with an easily replaceable bellows structure as claimed in claim 1, characterized in that: An upper sealing sleeve (15) is arranged between the inner side of the upper end of the bellows (11) and the valve stem (4), and a plurality of plug-in blocks (16) are equidistantly arranged on the upper end of the bellows (11). The plug-in blocks (16) are snap-fitted and connected with corresponding plug-in grooves provided on the inner side of the valve cover (7). The plug-in blocks (16) are made of metal, and the top of the plug-in blocks (16) are magnetically connected with a positioning magnetic block (17) installed at the upper end of the plug-in groove.

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