Non-rising stem gate valve with opening degree indication

Abstract

The utility model relates to the related field of non-rising stem gate valves, in particular to a non-rising stem gate valve with an opening indication function, which comprises a valve body, a valve plate, a valve rod, a handle, a fixed cover, a transparent plate, a rotating ring, a baffle, a thread indication dial, a guide rod, a groove, a slide rod, a positioning rod, a positioning groove, a spring, scale marks and the like. According to the utility model, the fixed cover and the baffle plate are arranged, and the fixed cover provides protection for the external threads, so that rusting of the external threads and the thread indicating dial is reduced, dust and impurities accumulated on the external threads and the thread indicating dial are also reduced, and smooth movement of the thread indicating dial is facilitated; the threaded indicating dial can be conveniently matched with the scale marks to more accurately display the opening condition of the non-rising stem gate valve, the transparent plate and the scale marks are covered and protected by the baffle, dust accumulated on the transparent plate is reduced, the scale marks can be conveniently and better observed, the opening condition of the non-rising stem gate valve can be more accurately calculated, and the opening adjustment accuracy of the non-rising stem gate valve is improved.

Description

Technical Field

[0001] The utility model relates to the relevant field of concealed stem gate valves, in particular to a concealed stem gate valve with an opening indication. Background Art

[0002] A concealed-stem gate valve is a type of valve that is mainly used in fluid control systems to regulate or block the flow of fluid. The "concealed stem" in its name means that the movement of the valve stem is not directly visible outside the valve. That is to say, when the valve is operated (usually by rotating the handwheel or using other drive devices), the valve stem does not move up and down with the rotation of the handwheel like a rising-stem gate valve, but is hidden inside the valve body for lifting and lowering. Concealed-stem gate valves are suitable for working environments with limited space, certain requirements for aesthetics, or where the valve opening does not need to be observed frequently.

[0003] The existing publication number is: CN204901036U discloses a non-rising stem gate valve opening and closing and opening display device. When the valve stem rotates, the gate plate and the pointer move in the same direction, and the opening and closing and opening of the valve can be understood by the pointer and the scale plate.

[0004] The external thread, indicating nut and scale plate of the existing patent are all arranged in an exposed manner. After long-term use, the external thread may rust or impurities may accumulate on the outer surface. The rust or accumulation of impurities on the external thread may easily cause the indicating nut to be unable to move smoothly, and then cause the pointer to be unable to move smoothly, so that the pointer and the scale plate cannot accurately display the opening of the concealed stem gate valve. At the same time, dust is easily accumulated on the scale plate and affects the observation of the scale line, thereby affecting the calculation of the opening of the concealed stem gate valve, and easily affecting the accuracy of the opening adjustment of the concealed stem gate valve. Summary of the invention

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a concealed-stem gate valve with an opening indication to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a concealed stem gate valve with an opening indication, comprising a valve body, a valve plate movably installed in the valve body, a valve stem threadedly connected to the valve plate vertically extending into the valve plate, the valve stem rotatably connected to the inner side of the valve body, a fixed cover movably connected to the valve body is fixedly arranged on the top of the valve body, a plurality of transparent plates are embedded in the side surface of the fixed cover, and a rotating ring is rotatably installed on the top of the fixed cover;

[0007] A threaded indicator disc is slidably mounted in the fixed cover;

[0008] The inner side of the transparent plate is provided with a plurality of vertically distributed scale lines, and the scale lines are used to determine the position of the valve plate in conjunction with the threaded indicator disk;

[0009] The bottom end surface of the rotating ring is provided with a plurality of baffles, which cover the transparent plates one by one;

[0010] A positioning structure for positioning is provided inside the rotating ring;

[0011] The inner ring of the threaded indicator disc is threadedly connected to the external thread arranged on the side surface of the valve stem.

[0012] Preferably, a handle is provided above the valve body, and the middle portion of the bottom end surface of the handle is connected to the top of the valve stem.

[0013] Preferably, a plurality of guide rods are vertically mounted on the inner bottom of the fixed cover, and the guide rods movably penetrate the upper and lower end surfaces of the threaded indicator disk.

[0014] Preferably, the transparent plate is arc-shaped, and the transparent plate is flush with the outer surface of the fixed cover.

[0015] Preferably, the baffle is an arc-shaped structure, and the baffle is parallel to the outer surface of the fixed cover.

[0016] Preferably, the positioning structure includes a groove opened on the side surface of the fixed cover, a sliding rod and a positioning rod slidably installed in the groove, the sliding rod is connected to the positioning rod, and the positioning rod passes through the inner side of the groove and then movably extends into the inner side of the positioning groove opened on the inner ring of the rotating ring. The positioning rod is connected to the inner wall of the groove through a spring, and the spring is movably mounted on the sliding rod.

[0017] Preferably, the portion of the positioning rod extending into the inner side of the positioning groove is a hemispherical structure, and the inner side of the positioning groove is a corresponding arc shape.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a fixed cover and a baffle plate, and the fixed cover is used to protect the external thread, thereby reducing the rust of the external thread and the thread indicator plate, and also reduces the accumulation of dust and impurities on the external thread and the thread indicator plate, which is conducive to the smooth movement of the thread indicator plate, and is convenient for the thread indicator plate to cooperate with the scale line to more accurately display the opening condition of the concealed stem gate valve. The baffle plate covers and protects the transparent plate and the scale line, and reduces the accumulation of dust on the transparent plate, so that the scale line can be better observed, the opening condition of the concealed stem gate valve can be more accurately calculated, and the accuracy of the opening adjustment of the concealed stem gate valve is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the front cross-sectional structure of the fixed cover of the utility model;

[0022] Figure 3It is a side view structural diagram of the fixed cover of the utility model;

[0023] Figure 4 This is a schematic diagram of the baffle distribution structure of the utility model when viewed from above;

[0024] Figure 5 The utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0025] Among them: valve body-1, valve plate-2, valve stem-3, handle-4, fixed cover-5, transparent plate-6, rotating ring-7, baffle-8, threaded indicator disk-9, guide rod-10, groove-11, sliding rod-12, positioning rod-13, positioning groove-14, spring-15, scale line-16, external thread-17. DETAILED DESCRIPTION

[0026] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0027] like Figure 1 As shown, the utility model provides a concealed stem gate valve with an opening indication, comprising a valve body 1, a valve plate 2 movably installed in the valve body 1, a valve stem 3 threadedly connected to the valve plate 2 vertically extending into the valve plate 2, the valve stem 3 being rotatably connected to the inner side of the valve body 1, the valve stem 3 being horizontally rotatable in the valve body 1, and the valve plate 2 being driven to move vertically in the valve body 1 by the horizontal rotation of the valve stem 3;

[0028] In this embodiment, a handle 4 is provided above the valve body 1, and the middle part of the bottom end surface of the handle 4 is connected to the top of the valve stem 3, so that the valve stem 3 can be driven to rotate horizontally by rotating the handle 4;

[0029] When in use, the valve stem 3 can be driven to rotate by turning the handle 4. When the valve stem 3 rotates, the thread at the bottom thereof drives the valve plate 2 to move vertically in the valve body 1. When the valve plate 2 moves upward, the concealed-stem gate valve opens; when the valve plate 2 moves downward and contacts the inner bottom wall of the valve body 1, the concealed-stem gate valve closes.

[0030] like Figures 2 to 4 As shown, in this embodiment, a fixed cover 5 movably connected to the valve body 1 is locked and fixed on the top of the valve body 1, a plurality of transparent plates 6 are fixedly embedded on the side surface of the fixed cover 5, and a rotating ring 7 is rotatably installed on the top of the fixed cover 5;

[0031] A threaded indicator disc 9 is slidably mounted in the fixed cover 5, and the threaded indicator disc 9 can move vertically along the inner wall of the fixed cover 5;

[0032] The inner side of the transparent plate 6 is provided with a plurality of vertically distributed scale lines 16, and the scale lines 16 are used to determine the position of the valve plate 2 in conjunction with the threaded indicator disk 9;

[0033] The bottom end surface of the rotating ring 7 is provided with a plurality of baffles 8, and the baffles 8 cover the transparent plate 6 one by one. The baffles 8 cover and protect the transparent plate 6, thereby reducing dust accumulation on the outer surface of the transparent plate 6;

[0034] A positioning structure for positioning is provided inside the rotating ring 7;

[0035] The inner ring of the threaded indicator plate 9 is threadedly connected to the external thread 17 provided on the side surface of the valve stem 3. The external thread 17 and the thread at the bottom of the valve stem 2 are provided in the same direction, so that the threaded indicator plate 9 can be driven to move vertically in the fixed cover 5 by the external thread 17.

[0036] In this embodiment, a plurality of guide rods 10 are vertically installed at the inner bottom of the fixed cover 5. The guide rods 10 vertically move through the upper and lower end surfaces of the thread indicator plate 9. The guide rods 10 provide positioning for the thread indicator plate 9, thereby improving the stability of the thread indicator plate during vertical movement.

[0037] In this embodiment, the transparent plate 6 is arc-shaped, and the transparent plate 6 is flush with the outer surface of the fixed cover 5, so as to reduce the collision between the baffle 8 and the transparent plate 6 when the baffle 8 rotates horizontally;

[0038] In this embodiment, the baffle 8 is an arc-shaped structure, and the baffle 8 is parallel to the outer surface of the fixed cover 5, so that the baffle 8 can rotate horizontally along the outer surface of the fixed cover 5;

[0039] In this embodiment, the transparent plate 6 is made of polycarbonate, which has extremely high impact resistance and can resist ultraviolet radiation well, is not easy to turn yellow, and can better observe the thread indicator plate 9;

[0040] Specifically, when in use, when the valve stem 3 drives the regulating valve plate 2 to perform opening and closing adjustment, the valve stem 2 drives the external thread 17 to rotate synchronously, and the external thread 17 drives the threaded indicator disk 9 to move vertically along the inner wall of the fixed cover 5. When the valve plate 2 moves upward to open, the threaded indicator disk 9 moves upward synchronously, and when the valve disc 2 moves downward to close, the threaded indicator disk 9 moves downward synchronously, thereby displaying the opening condition of the concealed stem gate valve through the scale line 16 on the transparent plate 6 and the threaded indicator disk 9.

[0041] like Figure 5 As shown, the positioning structure in this embodiment includes a groove 11 provided on the side surface of the fixed cover 5, a slide bar 12 and a positioning bar 13 horizontally slidably installed in the groove 11, the slide bar 12 is connected to the positioning bar 13, the positioning bar 13 passes through the inner side of the groove 11 and then movably extends into the inner side of the positioning groove 14 provided on the inner ring of the rotating ring 7, and the rotating ring 7 is positioned by the positioning bar 13 cooperating with the positioning groove 14, the positioning bar 13 is connected to the inner wall of the groove 11 through a spring 15, and the spring 15 is movably sleeved on the slide bar 12, so that the positioning bar 13 is quickly reset by the elastic force of the spring 15;

[0042] In this embodiment, the portion of the positioning rod 13 extending into the inner side of the positioning groove 14 is a hemispherical structure, and the inner side of the positioning groove 14 is a corresponding arc shape, so that when the rotating ring 7 is twisted, the positioning groove 14 pushes the positioning rod 13 to overcome the elastic force of the spring 15;

[0043] Specifically, when it is necessary to observe and calculate the opening of the concealed-stem gate valve, the baffle plate 8 can be driven to rotate and be misaligned with the transparent plate 6 by twisting the rotating ring 7. When the rotating ring 7 rotates, it drives the positioning groove 14 to rotate synchronously. When the positioning groove 14 rotates, it pushes the positioning rod 13 to overcome the elastic force of the spring 15. At this time, the spring 15 is compressed by the pressure of the positioning rod 13. When the concealed-stem gate valve is adjusted, the rotating ring 7 is twisted in the rear direction. The rotating ring 7 drives the positioning groove 14 and the baffle plate 8 to rotate and reset. The baffle plate 8 is reset to cover and block the transparent plate 6, reducing the accumulation of dust and impurities on the transparent plate 6 and affecting the observation of the scale line, and the positioning groove 14 is aligned with the positioning rod 13 when it is reset. The positioning rod 13 is entered into the positioning groove 14 by the elastic force of the spring 15, and the positioning rod 13 cooperates with the positioning groove 14 to provide positioning for the rotating ring 7 and the baffle plate 8, preventing the rotating ring 7 and the baffle plate 8 from rotating at will, thereby improving the stability of the rotating ring 7 and the baffle plate 8 during use.

[0044] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concealed-stem gate valve with an opening indicator, comprising a valve body, a valve plate movably mounted in the valve body, a valve stem threadedly connected to the valve plate extending vertically into the valve plate, and the valve stem is rotatably connected to the inner side of the valve body; It is characterized in that The top of the valve body is fixedly provided with a fixed cover movably connected to the valve body, a plurality of transparent plates are embedded in the side surface of the fixed cover, and a rotating ring is rotatably installed on the top of the fixed cover; A threaded indicator disc is slidably mounted in the fixed cover; The inner side of the transparent plate is provided with a plurality of vertically distributed scale lines, and the scale lines are used to determine the position of the valve plate in conjunction with the threaded indicator disk; The bottom end surface of the rotating ring is provided with a plurality of baffles, which cover the transparent plates one by one; A positioning structure for positioning is provided inside the rotating ring; The inner ring of the threaded indicator disc is threadedly connected to the external thread arranged on the side surface of the valve stem.

2. According to claim 1, a concealed stem gate valve with an opening indication is characterized in that: A handle is arranged above the valve body, and the middle part of the bottom end surface of the handle is connected to the top of the valve stem.

3. According to claim 1, a concealed stem gate valve with an opening indication is characterized in that: A plurality of guide rods are vertically installed on the inner bottom of the fixed cover, and the guide rods movably penetrate the upper and lower end surfaces of the threaded indicator plate.

4. According to claim 1, a concealed stem gate valve with an opening indication is characterized in that: The transparent plate is in an arc shape, and is flush with the outer surface of the fixing cover.

5. According to claim 1, a concealed stem gate valve with an opening indication is characterized in that: The baffle is an arc-shaped structure, and the baffle is parallel to the outer surface of the fixed cover.

6. According to claim 1, a concealed stem gate valve with an opening indication is characterized in that: The positioning structure includes a groove opened on the side surface of the fixed cover, a sliding rod and a positioning rod slidably installed in the groove, the sliding rod is connected to the positioning rod, the positioning rod passes through the inner side of the groove and then movably extends into the inner side of the positioning groove opened on the inner ring of the rotating ring, the positioning rod is connected to the inner wall of the groove through a spring, and the spring is movably sleeved on the sliding rod.

7. A concealed-stem gate valve with opening indication according to claim 6, characterized in that: The portion of the positioning rod extending into the inner side of the positioning groove is a hemispherical structure, and the inner side of the positioning groove is a corresponding arc shape.

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