Corrugated pipe stop valve

Abstract

The corrugated pipe stop valve comprises a valve body, a first horizontal channel and a second horizontal channel are formed in the valve body, the second horizontal channel is located above the first horizontal channel, and the corrugated pipe stop valve further comprises a vertical channel communicating the first horizontal channel with the second horizontal channel. A vertical channel is formed in the lower valve rod, a steel ball for blocking the vertical channel is arranged on the vertical channel, the steel ball is formed at the bottom of a valve disc, the top of the valve disc is connected to the lower valve rod, the lower valve rod is sleeved with a corrugated pipe, and the bottom and the top of the corrugated pipe are connected to the top of the valve disc and the bottom of a guide ring respectively. The utility model has the advantages of stable performance, safety, reliability and long service life.

Description

Technical Field

[0001] The present application relates to the field of valves, and in particular to a bellows stop valve. Background Art

[0002] The structure of ordinary bellows stop valves is basically sealed by upper packing to prevent external leakage. Due to the movement between the packing and the valve stem, inevitable friction occurs, so there is a possibility of leakage in the structure. Utility Model Content

[0003] The utility model aims to provide a bellows stop valve with stable performance, safety and reliability and long service life.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0005] The embodiment of the present application discloses a bellows stop valve, comprising a valve body, wherein a first horizontal channel and a second horizontal channel are formed inside the valve body, wherein the second horizontal channel is located above the first horizontal channel, and further comprising a vertical channel connecting the first horizontal channel and the second horizontal channel, wherein a steel ball blocking the vertical channel is arranged on the vertical channel, wherein the steel ball is formed at the bottom of a valve disc, wherein the top of the valve disc is connected to a lower valve stem, wherein a bellows is sleeved on the outer side of the lower valve stem, wherein the bottom and the top of the bellows are respectively connected to the top of the valve disc and the bottom of a guide ring,

[0006] When the lower valve stem rises, it drives the steel ball to leave the vertical channel, the bellows is compressed, and the first horizontal channel is connected with the second horizontal channel;

[0007] When the lower valve stem descends, it drives the steel ball to fit and seal the vertical channel, the bellows is released, and the first horizontal channel and the second horizontal channel are blocked.

[0008] Preferably, in the above-mentioned bellows stop valve, a valve stem nut is arranged above the guide ring, and the valve stem nut is connected to the lower valve stem through a thread.

[0009] Preferably, in the above-mentioned bellows stop valve, a limiting pin is provided on one side of the lower valve stem.

[0010] Preferably, in the above-mentioned bellows stop valve, the top of the lower valve stem is connected to the upper valve stem, a valve cover is provided on the top of the valve body, a pressure cover is provided on the top of the valve cover, and the upper valve stem is sealed through the valve cover and the pressure cover in sequence.

[0011] Optionally, in the above-mentioned bellows stop valve, a sealing packing is provided below the gland.

[0012] Optionally, in the above bellows globe valve, a handwheel is provided at the top of the upper valve stem.

[0013] Optionally, in the above bellows globe valve, a valve sleeve is sleeved outside the bellows.

[0014] Compared with the prior art, in the present utility model, by rotating the handwheel, the upper valve stem drives the lower valve stem and the sphere to move upward, compressing the bellows, so that the pipeline at the upper end is connected to the valve body, realizing the open state; rotating the handwheel again, the upper valve stem drives the lower valve stem and the sphere to move downward, releasing the bellows, and the deformation of the bellows makes its sealing surface closely fit with the valve seat, thereby blocking the fluid and realizing the closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application 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 recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 The cross-sectional view of the bellows globe valve in the embodiment of the present utility model is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will combine the drawings in the embodiments of the present utility model to describe the technical solutions in the embodiments of the present utility model in detail. 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 of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0018] Combined with Figure 1 As shown, the bellows globe valve 100 includes a valve body 101. A first horizontal channel 102 and a second horizontal channel 103 are formed inside the valve body 101. The second horizontal channel 103 is located above the first horizontal channel 102. It further includes a vertical channel 104 connecting the first horizontal channel 102 and the second horizontal channel 103. A steel ball 105 blocking the vertical channel 104 is provided on the vertical channel 104. The steel ball 105 is formed at the bottom of the valve disc 106. The top of the valve disc 106 is connected to the lower valve stem 107. A bellows 108 is sleeved outside the lower valve stem 107. The bottom and the top of the bellows 108 are respectively connected to the top of the valve disc 106 and the bottom of the guide ring 109.

[0019] When the lower valve stem 107 rises, it drives the steel ball 105 away from the vertical channel 104, the bellows 108 is compressed, and the first horizontal channel 102 communicates with the second horizontal channel 103;

[0020] When the lower valve stem 107 descends, it drives the steel ball 105 to fit and seal in the vertical channel 104, the bellows 108 is released, and the connection between the first horizontal channel 102 and the second horizontal channel 103 is blocked.

[0021] In this embodiment, by rotating the handwheel, the upper valve stem drives the lower valve stem and the sphere to move upward, compressing the bellows, so that the upper pipeline is connected to the valve body, and the fluid passes through the bellows and the pipeline of the valve body to achieve the open state; by rotating the handwheel again, the upper valve stem drives the lower valve stem and the sphere to move downward, releasing the bellows, and the deformation of the bellows makes its sealing surface fit tightly with the valve seat, thus blocking the fluid and achieving the closed state. This technical solution has the characteristics of stable performance, safety and reliability, and long service life.

[0022] Further, a valve stem nut 110 is arranged above the guide ring 109, and the valve stem nut 110 is threadedly connected to the lower valve stem 107. A handwheel 116 is arranged at the top of the upper valve stem 112.

[0023] In this embodiment, by this technical solution, the rotation of the handwheel is required to move the lower valve stem upward.

[0024] Further, a limit pin shaft 111 is arranged on one side of the lower valve stem 107.

[0025] In this embodiment, it prevents the upper and lower excessive displacement.

[0026] Further, the top of the lower valve stem 107 is connected to the upper valve stem 112, a valve cover 113 is arranged at the top of the valve body 101, a gland 114 is arranged at the top of the valve cover 113, and the upper valve stem 112 sequentially passes through the valve cover 113 and the gland 114 in a sealed manner. A sealing packing 115 is arranged below the gland 114.

[0027] In this embodiment, it realizes sealing and firmness.

[0028] Further, a valve sleeve 117 is sleeved outside the bellows 108.

[0029] In this embodiment, it maintains the overall firmness and stability of the structure.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0031] The above are only specific embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A bellows stop valve, characterized in that: The valve body comprises a valve body, wherein a first horizontal channel and a second horizontal channel are formed inside the valve body, wherein the second horizontal channel is located above the first horizontal channel, and further comprises a vertical channel connecting the first horizontal channel and the second horizontal channel, wherein a steel ball for blocking the vertical channel is arranged on the vertical channel, wherein the steel ball is formed at the bottom of a valve disc, wherein the top of the valve disc is connected to a lower valve stem, wherein a bellows is sleeved on the outer side of the lower valve stem, wherein the bottom and the top of the bellows are respectively connected to the top of the valve disc and the bottom of a guide ring, When the lower valve stem rises, it drives the steel ball to leave the vertical channel, the bellows is compressed, and the first horizontal channel is connected with the second horizontal channel; When the lower valve stem descends, it drives the steel ball to fit and seal the vertical channel, the bellows is released, and the first horizontal channel and the second horizontal channel are blocked.

2. The bellows stop valve according to claim 1, characterized in that: A valve stem nut is arranged above the guide ring, and the valve stem nut is connected to the lower valve stem through threads.

3. The bellows stop valve according to claim 1, characterized in that: A limiting pin is arranged on one side of the lower valve stem.

4. The bellows stop valve according to claim 1, characterized in that: The top of the lower valve stem is connected to the upper valve stem, the top of the valve body is provided with a valve cover, the top of the valve cover is provided with a pressure cover, and the upper valve stem seals through the valve cover and the pressure cover in sequence.

5. The bellows stop valve according to claim 4, characterized in that: A sealing filler is arranged below the gland.

6. The bellows stop valve according to claim 4, characterized in that: A hand wheel is arranged on the top of the upper valve stem.

7. The bellows stop valve according to claim 1, characterized in that: The outer side of the bellows is sleeved with a valve sleeve.

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