Stop valve with visual window structure

Abstract

The utility model provides a stop valve with a visual window structure, and belongs to the technical field of pipeline control. The stop valve with the visual window structure comprises a stop valve body and a window assembly, the stop valve body comprises a valve body part and a guide part which is fixedly connected to the valve body part and arranged outside a valve rod of the valve body part in a sleeving mode, a strip-shaped hole is formed in one side of the guide part, and the window assembly comprises an indicating part and a ruler. The first end of the indicating part penetrates through the strip-shaped hole to be fixedly connected to the valve rod, so that the valve rod drives the indicating part to move in the strip-shaped hole, the ruler is arranged on the guiding part and located on one side or two sides of the indicating part, and opening and closing information is marked on the ruler in the moving direction of the indicating part.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline control, in particular to a stop valve with a visual window structure. Background Art

[0002] In the high-pressure water descaling system, a stop valve is provided to control the flow of the system pipeline. The stop valve can effectively block the flow of high-pressure water in the descaling system, making it easier to inspect and repair related equipment in the high-pressure water descaling system.

[0003] In the prior art, the opening and closing movements of the stop valve are all completed inside the valve, and the opening and closing status of the stop valve cannot be directly observed from the outside. In this case, maintenance personnel cannot determine the operating status of the stop valve during the process of opening and closing the stop valve, which poses certain safety hazards.

[0004] In order to solve the above problems, it is urgently necessary to provide a stop valve whose operating status can be observed from the outside. In view of this, the present application is specially proposed. Utility Model Content

[0005] The utility model aims to provide a stop valve with a visual window structure, which enables the valve opening and closing stroke to be observed from the outside.

[0006] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0007] According to one aspect of the utility model, a stop valve with a visual window structure is provided, comprising a stop valve body and a window assembly, the stop valve body comprising a valve body portion and a guide portion fixedly connected to the valve body portion and sleeved on the outside of a valve stem of the valve body portion, a strip hole being provided on one side of the guide portion, the window assembly comprising an indicating portion and a ruler, the first end of the indicating portion passing through the strip hole and fixedly connected to the valve stem, so that the valve stem drives the indicating portion to move in the strip hole, the ruler is arranged on the guide portion and located on one side or both sides of the indicating portion, and the ruler is marked with opening and closing information in the movement direction of the indicating portion.

[0008] According to an embodiment of the present utility model, the second end of the indicating portion is provided with a straight groove or a raised portion, and the end of the straight groove or the raised portion points to the scale.

[0009] According to an embodiment of the present invention, the second end of the indicating portion is provided with an arrow-shaped groove or a protrusion, and the arrow-shaped groove or the protrusion points to the scale.

[0010] According to an embodiment of the present invention, the indicating portion is columnar.

[0011] According to an embodiment of the present utility model, the indicating part is a screw, a threaded hole is formed in the valve stem corresponding to the strip hole, and the first end of the indicating part is fixedly connected to the valve stem through the threaded hole.

[0012] According to an embodiment of the present invention, the window assembly further includes a transparent panel, and the transparent panel is arranged on the outside of the ruler.

[0013] According to one embodiment of the utility model, it also includes a plurality of keys, the valve stem is provided with a plurality of annularly arranged key grooves at the position of the strip hole, the inner wall of the guide portion is provided with a plurality of strip slide grooves corresponding to the key grooves, a part of the key is arranged in the key groove, the other part of the key is located in the strip slide groove and slides along the strip slide groove, and the first end of the indicating portion is fixedly connected to the key.

[0014] According to one embodiment of the utility model, the guide portion includes an annular pressure cover, an annular cylinder and an annular connecting flange, the annular pressure cover is sleeved on the outside of the valve stem and fixedly connected to the valve body, the annular pressure cover is provided with a first annular groove around the center hole, the annular cylinder is sleeved on the outside of the valve stem and one end of the annular cylinder is provided in the first annular groove, the annular connecting flange is sleeved on the outside of the valve stem and a second annular groove is provided at the lower end of the annular connecting flange around the center hole, the other end of the annular cylinder is provided in the second annular groove, the annular connecting flange is connected to the annular pressure cover by a plurality of bolts, and the strip hole is located on one side of the annular connecting flange.

[0015] According to one embodiment of the utility model, it also includes a rotating part, which includes two bearings, a threaded sleeve, an annular locking nut and a handle. An installation cavity is opened at the upper end of the annular connecting flange, and a first internal thread is provided at the upper end of the inner wall of the installation cavity. Two bearings are respectively installed in the installation cavity with upper and lower intervals. The inner wall of the threaded sleeve is provided with a second internal thread. The threaded sleeve is sleeved in the inner ring of the bearing. An annular protrusion is provided on the outer wall of the threaded sleeve. The upper end surface of the annular protrusion abuts against the lower end surface of the upper bearing. The annular locking nut is sleeved outside the threaded sleeve. The annular locking nut is provided with a first external thread, which is connected to the first internal thread, and the lower end surface of the annular locking nut abuts against the upper end surface of the upper bearing. The upper end of the valve stem is provided with a second external thread, which is connected to the second internal thread. The handle is fixedly connected to the upper end of the threaded sleeve to rotate the threaded sleeve.

[0016] According to one embodiment of the utility model, the valve body is provided with a water inlet channel, a valve stem stroke auxiliary chamber and a water outlet channel, a part of the valve stem is slidably sealed in the valve stem stroke auxiliary chamber, the valve stem stroke auxiliary chamber is located between the water inlet channel and the water outlet channel, when the valve stem is in a first position, one end of the valve stem seals and isolates the water inlet channel and the water outlet channel, when the valve stem is in a second position, one end of the valve stem releases the sealing isolation of the water inlet channel and the water outlet channel, and the guide portion is sleeved on another part of the valve stem extending out of the valve body.

[0017] An embodiment of the present invention has the following advantages or beneficial effects:

[0018] The utility model discloses a stop valve with a visual window structure, which includes a stop valve body and a window assembly. The stop valve body includes a valve body and a guide portion fixedly connected to the valve body and sleeved on the outside of a valve stem of the valve body. A strip hole is opened on one side of the guide portion. The window assembly includes an indicating portion and a ruler. The first end of the indicating portion passes through the strip hole and is fixedly connected to the valve stem, so that the valve stem drives the indicating portion to move in the strip hole. The ruler is arranged on the guide portion and is located on one side or both sides of the indicating portion. The ruler is marked with opening and closing information in the movement direction of the indicating portion, so that the valve opening and closing stroke can be observed from the outside, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0020] Figure 1 FIG. 4 is a cross-sectional view of a stop valve with a visualization window structure according to an exemplary embodiment.

[0021] Figure 2 yes Figure 1 A partial enlarged view of .

[0022] Figure 3 This is a partial enlarged view from the A direction.

[0023] The reference numerals are described as follows:

[0024] 1. Stop valve body; 11. Valve body; 111. Valve stem; 112. Water inlet channel; 113. Water outlet channel; 12. Guide part; 121. Strip hole; 122. Annular gland; 123. Annular cylinder; 124. Annular connecting flange; 2. Window assembly; 21. Indicator; 22. Scale; 23. Transparent panel; 3. Key; 4. Rotating part; 41. Bearing; 42. Threaded sleeve; 43. Annular locking nut; 44. Handle; 45. Protective cover. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0026] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0027] like Figure 1-3 As shown, a stop valve with a visual window structure according to an embodiment of the utility model includes a stop valve body 1 and a window assembly 2.

[0028] The stop valve body 1 comprises a valve body 11 and a guide portion 12 fixed to the valve body 11 and sleeved outside a valve stem 111 of the valve body 11 .

[0029] The valve body 11 is provided with a water inlet channel 112 , a valve stem stroke auxiliary chamber and a water outlet channel 113 . A portion of the valve stem 111 is slidably sealed in the valve stem stroke auxiliary chamber. The valve stem stroke auxiliary chamber is located between the water inlet channel 112 and the water outlet channel 113 .

[0030] When the valve stem 111 is located at the first position, one end of the valve stem 111 seals and isolates the water inlet channel 112 and the water outlet channel 113 , so that no water flows out of the water outlet channel 113 .

[0031] When the valve stem 111 is located at the second position, one end of the valve stem 111 releases the sealing isolation between the water inlet channel 112 and the water outlet channel 113 , so that high-pressure water flows out of the water outlet channel 113 .

[0032] Another portion of the valve stem 111 extends out of the valve body 11 , and the guide portion 12 is sleeved outside the other portion of the valve stem 111 . A strip-shaped hole 121 is formed on one side of the guide portion 12 .

[0033] The window assembly 2 includes an indicating portion 21 and a scale 22. The first end of the indicating portion 21 passes through the strip hole 121 and is fixed to the valve stem 111, so that the valve stem 111 drives the indicating portion 21 to move in the strip hole 121. The scale 22 is arranged on the guide portion 12 and is located on one side or both sides of the indicating portion 21. The scale 22 is marked with opening and closing information in the movement direction of the indicating portion 21.

[0034] For example, the scale 22 is marked with information of fully closed, 25% open, 50% open, 75% open, and 100% open from bottom to top.

[0035] When the second end of the indicator part 21 is at the fully closed mark position, the valve stem 111 is at the first position, and one end of the valve stem 111 seals and isolates the water inlet channel 112 and the water outlet channel 113, and no water flows out of the water outlet channel 113, so that the valve opening and closing stroke can be observed from the outside, thereby improving safety.

[0036] When the second end of the indicator 21 is located at the 50% opening mark position, one end of the valve stem 111 is located in the middle of the first position and the second position, which is half-open, and the water outlet channel 113 flows out high-pressure water.

[0037] When the second end of the indicator portion 21 is located at the 100% open mark position, the valve stem 111 is located at the second position, and one end of the valve stem 111 completely releases the sealing isolation of the water inlet channel 112 and the water outlet channel 113, allowing high-pressure water to flow out of the water outlet channel 113, so that the valve opening and closing stroke can be observed from the outside, thereby improving safety.

[0038] Preferably, a second strip-shaped hole is opened in the middle of the scale 22 corresponding to the strip-shaped hole 121 , and the second end of the indicating portion 21 is located in the second strip-shaped hole of the scale 22 and can move in the second strip-shaped hole of the scale 22 .

[0039] Preferably, both sides of the second bar-shaped hole of the scale 22 are marked with information of fully closed, 25% open, 50% open, 75% open, and 100% open, so as to facilitate observation of the position of the indicator 21 .

[0040] like Figure 3 As shown, in a preferred embodiment of the utility model, the indicating portion 21 is columnar, and a straight groove or a protrusion is provided at the second end of the indicating portion 21, and the end of the straight groove or the straight protrusion points to the scale 22, and the straight groove or the straight protrusion has a small width, so as to more accurately reflect the current position of the valve stem 111.

[0041] Preferably, the I-shaped groove or I-shaped protrusion is painted red to make the second end of the indicator 21 more eye-catching and facilitate observation of the position of the second end of the indicator 21 relative to the mark of the ruler 22 .

[0042] Of course, the second end of the indicator 21 is not limited to a straight groove or a straight protrusion. For example, the second end of the indicator 21 is provided with an arrow-shaped groove or an arrow-shaped protrusion, and the arrow-shaped groove or the arrow-shaped protrusion points to the scale 22. Those skilled in the art can select the shape of the second end of the indicator 21 according to actual needs.

[0043] like Figure 1 ,2 As shown, in a preferred embodiment of the present invention, the indicator 21 is a screw, the valve stem 111 is provided with a threaded hole corresponding to the strip hole 121, and the first end of the indicator 21 is fixedly connected to the valve stem 111 through the threaded hole. The straight groove or straight protrusion is located at the head of the screw.

[0044] like Figure 1 , 2 As shown, in a preferred embodiment of the present invention, the window assembly 2 further includes a transparent panel 23, which is disposed on the outside of the scale 22 to protect the marking content on the scale 22 and improve the service life of the scale 22. The transparent panel 23 and the scale 22 are both fixed to the guide portion 12 by four screws.

[0045] like Figure 1 , 2 As shown, in a preferred embodiment of the present utility model, a plurality of keys 3 are further included, and the valve stem 111 is provided with a plurality of annularly arranged key grooves at the position of the strip hole 121 , and the shape of the key grooves is adapted to the keys 3 .

[0046] The inner wall of the guide portion 12 is provided with a plurality of strip slide grooves corresponding to the key slots, a portion of the key 3 is arranged in the key slot, and another portion of the key 3 is located in the strip slide groove and slides vertically along the strip slide groove to prevent the valve stem 111 from rotating, and the first end of the indicating portion 21 is fixedly connected to the key 3.

[0047] like Figure 1 As shown, in a preferred embodiment of the present utility model, the guide portion 12 includes an annular pressure cover 122 , an annular cylinder 123 and an annular connecting flange 124 .

[0048] The annular gland 122 is sleeved on the valve stem 111 and fixed to the valve body 11 . The annular gland 122 is provided with a first annular groove surrounding the center hole.

[0049] The annular cylinder 123 is sleeved outside the valve stem 111 and the lower end of the annular cylinder 123 is disposed in the first annular groove.

[0050] The annular connecting flange 124 is sleeved on the outside of the valve stem 111 and a second annular groove is arranged at the lower end of the annular connecting flange 124 around the center hole. The upper end of the annular cylinder 123 is arranged in the second annular groove. The annular connecting flange 124 is connected to the annular pressure cover 122 by multiple bolts, and the strip hole 121 is located on one side of the annular connecting flange 124.

[0051] Preferably, the connecting flange 124 is provided with a strip groove, the strip hole 121 is located in the strip groove, the width of the strip groove is slightly larger than the head of the second end of the indicating part 21, and the length of the strip groove is slightly larger than the length of the strip hole 121, so that the head of the second end of the indicating part 21 is located in the strip groove and moves vertically in the strip groove.

[0052] An annular guide sleeve is interference fit inside the annular pressure cover 122, the annular cylinder 123 and the annular connecting flange 124. The annular guide sleeve is sleeved outside the valve stem 111. A plurality of sealing rings are arranged on the inner ring surface of the annular guide sleeve. The inner ring surface of the sealing ring abuts against the valve stem 111 to improve the sealing performance.

[0053] like Figure 1 As shown, in a preferred embodiment of the present utility model, a rotating part 4 is also included. The rotating part 4 includes two bearings 41 , a threaded sleeve 42 , an annular locking nut 43 and a handle 44 .

[0054] An installation cavity is provided at the upper end of the annular connecting flange 124 , and a first internal thread is provided at the upper end of the inner wall of the installation cavity. Two bearings 41 are installed in the installation cavity at upper and lower intervals, respectively. A second internal thread is provided on the inner wall of the threaded sleeve 42 , and the threaded sleeve 42 is sleeved in the inner ring of the bearing 41 .

[0055] The outer wall of the threaded sleeve 42 is provided with an annular protrusion, which is located between the two bearings 41. The upper end surface of the annular protrusion abuts against the lower end surface of the upper bearing 41. The annular locking nut 43 is sleeved outside the threaded sleeve 42. The annular locking nut 43 is provided with a first external thread, which is connected to the first internal thread, and the lower end surface of the annular locking nut 43 abuts against the upper end surface of the upper bearing 41. The upper end of the valve stem 111 is provided with a second external thread, which is connected to the second internal thread. The handle 44 is fixedly connected to the upper end of the threaded sleeve 42 to rotate the threaded sleeve 42.

[0056] When the threaded sleeve 42 rotates forward, the valve stem 111 moves vertically upward along the threaded sleeve 42 to open the water outlet channel of the valve body 11. For example, when the water outlet channel needs to be opened by 75%, when the straight groove of the indicator part 21 is aligned with the 75% scale of the ruler 22, the threaded sleeve 42 is stopped from rotating to open the water outlet channel by 75%.

[0057] When the threaded sleeve 42 rotates in the opposite direction, the valve stem 111 moves vertically downward along the threaded sleeve 42 to close the water outlet passage of the valve body 11. When the straight groove of the indicator 21 is aligned with the full-close scale of the scale 22, the water outlet passage is completely closed.

[0058] Preferably, the rotating part 4 further includes a protective cover 45 , which is mounted on the upper end of the threaded sleeve 42 and closes the upper end of the threaded sleeve 42 to prevent dust and water from entering the threaded sleeve 42 and corroding the internal threads of the threaded sleeve 42 .

[0059] In the embodiments of the present invention, the term "multiple" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0060] In the description of the embodiments of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0061] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stop valve with a visual window structure, characterized in that: include: A stop valve body (1) comprises a valve body (11) and a guide portion (12) fixed to the valve body (11) and sleeved outside a valve stem (111) of the valve body (11), wherein a strip-shaped hole (121) is provided on one side of the guide portion (12); The window assembly (2) comprises an indicating portion (21) and a scale (22), wherein the first end of the indicating portion (21) passes through the strip hole (121) and is fixedly connected to the valve stem (111), so that the valve stem (111) drives the indicating portion (21) to move in the strip hole (121), and the scale (22) is arranged on the guide portion (12) and is located on one side or both sides of the indicating portion (21), and the scale (22) is marked with opening and closing information in the moving direction of the indicating portion (21).

2. The stop valve with a visual window structure according to claim 1, characterized in that: The second end of the indicating portion (21) is provided with a straight groove or a raised portion, and the end of the straight groove or the raised portion points to the scale (22).

3. The stop valve with a visual window structure according to claim 1, characterized in that: The second end of the indicating portion (21) is provided with an arrow-shaped groove or a protrusion, and the arrow-shaped groove or the protrusion points to the scale (22).

4. The stop valve with a visual window structure according to claim 1, characterized in that: The indicating portion (21) is columnar.

5. The stop valve with a visual window structure according to claim 1, characterized in that: The indicating portion (21) is a screw, and the valve stem (111) is provided with a threaded hole corresponding to the strip-shaped hole (121), and the first end of the indicating portion (21) is fixedly connected to the valve stem (111) through the threaded hole.

6. The stop valve with a visual window structure according to claim 1, characterized in that: The window assembly (2) further comprises a transparent panel (23), wherein the transparent panel (23) is arranged on the outside of the scale (22).

7. The stop valve with a visual window structure according to claim 1, characterized in that: It also includes a plurality of keys (3), the valve stem (111) is provided with a plurality of key grooves arranged in an annular manner, the inner wall of the guide portion (12) is provided with a plurality of strip-shaped slide grooves corresponding to the key grooves, a portion of the key (3) is arranged in the key groove, another portion of the key (3) is located in the strip-shaped slide groove and slides along the strip-shaped slide groove, and the first end of the indicating portion (21) is fixedly connected to the key (3).

8. The stop valve with a visual window structure according to any one of claims 1 to 7, characterized in that: The guide portion (12) comprises an annular pressure cover (122), an annular cylinder (123) and an annular connecting flange (124); the annular pressure cover (122) is sleeved outside the valve stem (111) and fixedly connected to the valve body (11); the annular pressure cover (122) is provided with a first annular groove around the center hole; the annular cylinder (123) is sleeved outside the valve stem (111) and one end of the annular cylinder (123) is provided in the first annular groove; the annular connecting flange (124) is sleeved outside the valve stem (111) and a second annular groove is provided at the lower end of the annular connecting flange (124) around the center hole; the other end of the annular cylinder (123) is provided in the second annular groove; the annular connecting flange (124) is connected to the annular pressure cover (122) by a plurality of bolts; and the strip hole (121) is located on one side of the annular connecting flange (124).

9. The stop valve with a visual window structure according to claim 8, characterized in that: The invention also comprises a rotating part (4), wherein the rotating part (4) comprises two bearings (41), a threaded sleeve (42), an annular locking nut (43) and a handle (44); an upper end portion of the annular connecting flange (124) is provided with an installation cavity; an upper end portion of an inner wall of the installation cavity is provided with a first internal thread; the two bearings (41) are respectively installed in the installation cavity with an upper and lower interval; an inner wall of the threaded sleeve (42) is provided with a second internal thread; the threaded sleeve (42) is sleeved in the inner ring of the bearing (41); an outer wall of the threaded sleeve (42) is provided with an annular protrusion; the annular protrusion is located between the two bearings (41) and the inner wall of the threaded sleeve (42). The upper end surface of the annular protrusion abuts against the lower end surface of the bearing (41) above, the annular locking nut (43) is sleeved outside the threaded sleeve (42), the annular locking nut (43) is provided with a first external thread, the first external thread is connected to the first internal thread, and the lower end surface of the annular locking nut (43) abuts against the upper end surface of the bearing (41) above, the upper end of the valve stem (111) is provided with a second external thread, the second external thread is connected to the second internal thread, and the handle (44) is fixedly connected to the upper end of the threaded sleeve (42) to rotate the threaded sleeve (42).

10. The stop valve with a visualization window structure according to claim 1, characterized in that: The valve body (11) is provided with a water inlet channel (112), a valve stem stroke auxiliary chamber and a water outlet channel (113); a portion of the valve stem (111) is slidably sealed in the valve stem stroke auxiliary chamber; the valve stem stroke auxiliary chamber is located between the water inlet channel (112) and the water outlet channel (113); when the valve stem (111) is located at a first position, one end of the valve stem (111) seals and isolates the water inlet channel (112) and the water outlet channel (113); when the valve stem (111) is located at a second position, one end of the valve stem (111) releases the seal and isolation between the water inlet channel (112) and the water outlet channel (113); the guide portion (12) is sleeved on another portion of the valve stem (111) extending outside the valve body (11).

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