Corrugated pipe stop valve

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a corrugated pipe stop valve which comprises a valve body, a valve core and a valve rod, a mounting seat is arranged on the valve core, a corrugated pipe clamping base is clamped on the mounting seat through clamping grooves, a plurality of annular clamping grooves are formed in the top of the corrugated pipe clamping base, and the diameters of the annular clamping grooves are sequentially increased. A corrugated pipe arranged at the lower end of the valve rod in a sleeving mode is clamped through the annular clamping grooves, the top end of the corrugated pipe is in threaded connection with a corrugated pipe fixing cover, and a plurality of annular threaded fixing grooves with the diameters sequentially increased are formed in the bottom of the corrugated pipe fixing cover. According to the utility model, the corrugated pipe is detachably connected with the corrugated pipe fixing cover and the corrugated pipe clamping base, so that the damaged corrugated pipe can be conveniently replaced; and the whole corrugated pipe assembly does not need to be disassembled. By arranging the annular clamping grooves and the annular threaded fixing grooves with different diameters, after the corrugated pipe clamping base and the corrugated pipe fixing cover are installed on the stop valves with different sizes, corrugated pipes with different sizes can be replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of globe valves, and particularly relates to a bellows globe valve. Background Art

[0002] Most of the bellows on the existing bellows globe valves are fixedly connected, that is, the bellows and the upper bellows seat and the lower bellows seat are of welded structure and cannot be disassembled. When the bellows is damaged, the whole bellows assembly needs to be replaced. And when bellows of different sizes need to be installed on different models of bellows globe valves, the bellows seat needs to be replaced together, which is time-consuming and laborious. Content of the Utility Model

[0003] To solve the problems raised in the above background art, the utility model provides a bellows globe valve. By the detachable connection mode of the bellows with the bellows fixing cover and the bellows clamping base, it is convenient to replace the damaged bellows; there is no need to disassemble the whole bellows assembly, thus bringing convenience to the staff and saving time and effort. By using the provided annular clamping grooves and annular thread fixing grooves with different diameters, after the bellows clamping base and the bellows fixing cover in this application are installed on globe valves of different sizes, the requirements for different sizes of the internal valve stem can be met, and the replacement of bellows with different sizes can be realized.

[0004] To achieve the above object, the utility model provides the following technical solution: A bellows globe valve, comprising a valve body, a valve core and a valve stem. The lower end of the valve stem penetrates into the internal valve cavity of the valve body and is connected with the valve core. An installation seat is arranged on the valve core. The bottom end of the valve stem is inserted into the installation seat and is connected with the valve core through a large hexagon bolt. A bellows clamping base is clamped on the installation seat through a clamping groove. A plurality of annular clamping grooves with gradually increasing diameters are arranged at the top of the bellows clamping base, and a bellows sleeved on the lower end of the valve stem is clamped through the annular clamping grooves. The top end of the bellows is threadedly connected with a bellows fixing cover, and a plurality of annular thread fixing grooves with gradually increasing diameters are arranged at the bottom of the bellows fixing cover.

[0005] Preferably, a connection clamping block is arranged at the bottom end of the bellows, and the bellows is mutually clamped with the bellows clamping base by clamping the connection clamping block into the annular clamping groove. A limiting rod for limiting the connection clamping block, the annular clamping groove and the valve stem is penetrated through the annular clamping groove.

[0006] Preferably, a threaded joint is connected to the top end of the bellows, and the bellows is threadedly connected with the bellows fixing cover through the threaded joint and the annular thread fixing groove.

[0007] Preferably, the bottom of the bellows clamping base is installed on the installation seat through an installation block by a small hexagon bolt.

[0008] Preferably, the bellows fixing cover is installed on the valve body through a valve cover by a tension bolt.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model is provided with a detachable corrugated pipe outside the valve stem. The connecting block at the bottom end of the corrugated pipe is clamped into the annular groove to be clamped with the corrugated pipe clamping base, and the connecting block, the annular groove and the valve stem are mutually limited by the limiting rod; the top end of the corrugated pipe is threadedly connected with the corrugated pipe fixing cover through a threaded joint and an annular thread fixing groove; the corrugated pipe fixing cover is installed on the valve body through the valve cover by a tension bolt; through the detachable connection mode of the corrugated pipe with the corrugated pipe fixing cover and the corrugated pipe clamping base, it is convenient to replace the damaged corrugated pipe; there is no need to disassemble the whole corrugated pipe assembly, thus bringing convenience to the staff and saving time and effort.

[0011] By using the annular grooves and annular thread fixing grooves with different diameters, after the stop valves with different sizes are installed with the corrugated pipe clamping base and the corrugated pipe fixing cover in this application, the requirements for different sizes of the internal valve stem can be met, and the replacement of corrugated pipes with different sizes can be realized. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of a corrugated pipe stop valve of the present utility model;

[0014] Figure 2 It is a three-dimensional structure schematic diagram of the connection between the valve stem, the valve core and the corrugated pipe in a corrugated pipe stop valve of the present utility model;

[0015] Figure 3 It is Figure 2 the cross-sectional view structure schematic diagram of the longitudinal section in

[0016] Figure 4 It is Figure 2 another cross-sectional view structure schematic diagram of the longitudinal section in

[0017] Figure 5 It is Figure 3 the enlarged structure schematic diagram at A in

[0018] Explanation of the reference numerals in the drawings:

[0019] 1. Valve body; 2. Valve core; 21. Big hexagon bolt; 22. Small hexagon bolt; 23. Groove;

[0020] 3. Valve stem;

[0021] 4. Valve cover;

[0022] 5. Bellows; 51. Limit connection block; 52. Threaded joint;

[0023] 6. Bellows fixing cover; 61. Annular threaded fixing groove;

[0024] 7. Bellows clamping base; 71. Mounting block; 72. Annular clamping groove;

[0025] 8. Mounting seat;

[0026] 10. Limit rod;

[0027] 11. Tension bolt. Detailed implementation manner

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0029] Embodiment 1

[0030] Please refer to Figures 1-5 , the present utility model provides the following technical solutions: A bellows globe valve includes a valve body 1, a valve core 2 and a valve stem 3. The lower end of the valve stem 3 penetrates into the valve cavity inside the valve body 1 and is connected to the valve core 2. An installation seat 8 is provided on the valve core 2. The bottom end of the valve stem 3 is inserted into the installation seat 8 and is connected to the valve core 2 through a large hexagon bolt 21. A bellows clamping base 7 is clamped on the installation seat 8 through a clamping groove 23. The top of the bellows clamping base 7 is provided with a plurality of annular clamping grooves 72 with gradually increasing diameters, and a bellows 5 sleeved on the lower end of the valve stem 3 is clamped through the annular clamping grooves 72. The top end of the bellows 5 is threadedly connected with a bellows fixing cover 6. The bottom of the bellows fixing cover 6 is provided with a plurality of annular threaded fixing grooves 61 with gradually increasing diameters; by using the annular clamping grooves 72 and annular threaded fixing grooves 61 with different diameters; after installing the bellows clamping base 7 and the bellows fixing cover 6 in this application on globe valves of different sizes, the requirements for different sizes of the internal valve stem 3 can be met, and the replacement of bellows 5 of different sizes can be realized.

[0031] In this embodiment, a connecting block 51 is provided at the bottom end of the bellows 5. The bellows 5 is clamped with the bellows clamping base 7 by fitting the connecting block 51 into the annular slot 72. A limiting rod 10 is inserted through the annular slot 72 for limiting the connecting block 51, the annular slot 72 and the valve rod 3. The connecting block 51 at the bottom end of the bellows 5 is fitted into the annular slot 72 to be clamped with the bellows clamping base 7, and the connecting block 51, the annular slot 72 and the valve rod 3 are mutually limited by the limiting rod 10, which facilitates the replacement of the damaged bellows 5.

[0032] In this embodiment, a threaded joint 52 is connected to the top end of the bellows 5. The bellows 5 is threadedly connected to the bellows fixing cover 6 through the threaded joint 52 and the annular threaded fixing groove 61. The bellows fixing cover 6 is installed on the valve body 1 through the valve cover 4 by a tension bolt 11. The detachable connection mode of the bellows 5 with the bellows fixing cover 6 and the bellows clamping base 7 facilitates the replacement of the damaged bellows 5. It is not necessary to disassemble the whole bellows assembly, thus bringing convenience to the staff and saving time and effort.

[0033] In this embodiment, the bottom of the bellows clamping base 7 is installed on the mounting seat 8 through the mounting block 71 by small hexagon bolts 22.

[0034] The working principle and usage process of the present utility model: When the present utility model is in use, the bottom end of the valve rod 3 is inserted into the mounting seat 8 and connected to the valve core 2 by a large hexagon bolt 21. A detachable bellows 5 is arranged outside the valve rod 3. The connecting block 51 at the bottom end of the bellows 5 is fitted into the annular slot 72 to be clamped with the bellows clamping base 7, and the connecting block 51, the annular slot 72 and the valve rod 3 are mutually limited by the limiting rod 10. The top end of the bellows 5 is threadedly connected to the bellows fixing cover 6 through the threaded joint 52 and the annular threaded fixing groove 61. The bellows fixing cover 6 is installed on the valve body 1 through the valve cover 4 by a tension bolt 11. The detachable connection mode of the bellows 5 with the bellows fixing cover 6 and the bellows clamping base 7 facilitates the replacement of the damaged bellows 5. It is not necessary to disassemble the whole bellows assembly, thus bringing convenience to the staff and saving time and effort.

[0035] Several annular slots 72 with gradually increasing diameters are provided at the top of the bellows clamping base 7. Several annular threaded fixing grooves 61 with gradually increasing diameters are provided at the bottom of the bellows fixing cover 6. By using the annular slots 72 and the annular threaded fixing grooves 61 with different diameters, after installing the bellows clamping base 7 and the bellows fixing cover 6 in this application on stop valves with different sizes, the requirements of different sizes of the internal valve rod 3 can be met, and the replacement of bellows 5 with different sizes can be realized.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bellows globe valve, comprising a valve body (1), a valve core (2) and a valve stem (3). The lower end of the valve stem (3) penetrates into the inner valve cavity of the valve body (1) and is connected to the valve core (2), characterized in that: The valve core (2) is provided with a mounting seat (8). The bottom end of the valve stem (3) is inserted into the interior of the mounting seat (8) and is connected to the valve core (2) by a large hexagon bolt (21). A bellows clamping base (7) is clamped on the mounting seat (8) through a clamping groove (23). The top of the bellows clamping base (7) is provided with a number of annular clamping grooves (72) with diameters increasing in sequence, and a bellows (5) sleeved on the lower end of the valve stem (3) is clamped through the annular clamping grooves (72). The top end of the bellows (5) is threadedly connected with a bellows fixing cover (6). The bottom of the bellows fixing cover (6) is provided with a number of annular thread fixing grooves (61) with diameters increasing in sequence.

2. The bellows globe valve according to claim 1, wherein: A connecting block (51) is provided at the bottom end of the bellows (5). The bellows (5) is mutually clamped with the bellows clamping base (7) by inserting the connecting block (51) into the annular clamping groove (72). A limiting rod (10) for limiting the connecting block (51), the annular clamping groove (72) and the valve stem (3) is penetrated through the annular clamping groove (72).

3. A bellows globe valve according to claim 1, characterized in that: A threaded joint (52) is connected to the top end of the bellows (5). The bellows (5) is threadedly connected with the bellows fixing cover (6) through the threaded joint (52) and the annular thread fixing groove (61).

4. A bellows globe valve according to claim 1, characterized in that: The bottom of the bellows clamping base (7) is mounted on the mounting seat (8) through a mounting block (71) by a small hexagon bolt (22).

5. The bellows globe valve according to claim 1, characterized in that: The bellows fixing cover (6) is mounted on the valve body (1) through a valve cover (4) by a tension bolt (11).

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