Straight-through stop valve

Abstract

The utility model discloses a straight-through stop valve which comprises a valve body, a valve rod is connected to the top of the valve body in an inserted mode, a connecting column is fixedly connected to the top of the valve rod, and an inserting rod is fixedly connected to the side, close to the connecting column, of a bearing. After the inserting rod moves downwards to be away from the inserting groove, the threaded pipe stops rotating, then the movable rod is turned over, the threaded pipe is rotated, the threaded pipe moves towards the fixed rod relative to the movable rod under the action of the external threads until the threaded pipe sleeves the outer side edge of the fixed rod, and the threaded pipe jointly sleeves the outer sides of the movable rod and the fixed rod; compared with the prior art, according to the device, the two movable rods are unfolded, the force arm of the fixed rod is lengthened, convenience can be provided for rotating the valve rod, the overall size of the device can be reduced, and convenience is provided for use.

Description

Technical Field

[0001] The utility model relates to the technical field of globe valves, in particular to a straight-through globe valve. Background Art

[0002] The straight-through globe valve relies on the valve stem pressure to tightly combine the valve flap sealing surface and the valve seat sealing surface to prevent the medium from flowing through. It has the characteristics of small friction between the sealing surfaces during the opening and closing process, wear resistance, small opening height, and good manufacturing process performance. It is one of the most widely used valves in the industrial sector.

[0003] A utility model patent of a straight-through globe valve with the patent number 201621261112.3 discloses a straight-through globe valve, which includes a valve body and a valve cover. A valve stem passes through the valve cover. One end of the valve stem extending into the valve body is provided with a valve flap, and one end of the valve stem located outside the valve cover is provided with an inner handwheel. An iron cylinder cover is covered on the valve cover. An iron bracket is fixed on the inner handwheel, and a passive rotating shaft is fixed on the iron bracket. A passive bevel gear is fixed at the upper end of the passive rotating shaft. An active rotating shaft is provided on the iron cylinder cover, and the active rotating shaft and the iron cylinder cover are connected by a bearing. An active bevel gear is provided at the position of the active rotating shaft corresponding to the passive bevel gear. An outer handwheel is provided at the outer end of the active rotating shaft located outside the iron cylinder cover. By setting an iron bracket on the outer end handwheel of the valve stem of the traditional globe valve and then meshing the passive rotating shaft and the active rotating shaft arranged on the iron bracket, the valve stem and the active rotating shaft are vertically meshed, reducing the torque and enabling the globe valve to be quickly opened and closed. However, in actual use, if the valve stem does not rotate for a long time, the internal thread is prone to rust, resulting in difficulty in rotating the valve stem. It is difficult to rotate the valve stem only by relying on the handwheel, which brings inconvenience to people's use. Therefore, we urgently need a straight-through globe valve that can increase the turning force arm to solve the above problems. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present utility model is to provide a straight-through globe valve.

[0005] One of the purposes of the present utility model is achieved by adopting the following technical solutions:

[0006] A straight-through globe valve includes a valve body. A valve stem is inserted into the top of the valve body. A connecting column is fixedly connected to the top of the valve stem. Fixed rods are fixedly connected to both the left and right sides of the connecting column near the top. One side of the fixed rod away from the connecting column is movably connected to a movable rod. A threaded tube is sleeved on the outer edge of the movable rod near the top. A bearing is fixedly sleeved on the outer edge of the threaded tube. A plug rod is fixedly connected to one side of the bearing close to the connecting column. Cross plates are fixedly connected to both the left and right sides of the connecting column near the bottom. Slots are opened at the bottom of the cross plates. The top of the plug rod is inserted into the inner cavity of the slot. The threaded tube is threadedly connected to the outer edge of the movable rod.

[0007] Preferably, flange plates are fixedly sleeved on the outer side edges of the valve body near the bottom and the right side, and a plurality of flange holes are formed in the flange plates.

[0008] Preferably, a second connecting plate is fixedly connected to the top end of the movable rod. First connecting plates are arranged on both the front and rear sides of the second connecting plate. The first connecting plate is fixedly connected to one end of the fixed rod. A pin shaft is movably penetrated through the second connecting plate, and both ends of the pin shaft are fixedly penetrated through the adjacent first connecting plates.

[0009] Preferably, a plurality of anti-slip sleeves are fixedly sleeved on the outer side edge of the movable rod, and the plurality of anti-slip sleeves are arranged in a linear arrangement from top to bottom in sequence.

[0010] Preferably, the insertion rod and the insertion slot are mutually matched, and the cross section of the insertion rod is L-shaped.

[0011] Preferably, external threads are formed on the outer side edges of both the fixed rod and the movable rod, and the external threads are mutually matched with the threaded tube.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For a straight-through stop valve of the present utility model, when it is necessary to open or close the valve body, first rotate the threaded tube. Stop rotating the threaded tube after the insertion rod moves downward to be away from the insertion slot. Then flip the movable rod and rotate the threaded tube. Under the action of the external thread, the threaded tube moves relative to the movable rod towards the direction of the fixed rod until the threaded tube is sleeved on the outer side edge of the fixed rod, and the threaded tube is jointly sleeved on the outer side edges of the movable rod and the fixed rod. At this time, the two movable rods are unfolded, and the force arm of the fixed rod is lengthened. Compared with the prior art, the device unfolds the two movable rods and lengthens the force arm of the fixed rod, which can not only facilitate the rotation of the valve stem, but also reduce the overall volume of the device, providing convenience for use;

[0014] 2. For a straight-through stop valve of the present utility model, after the valve is opened or closed, rotate the threaded tube to make the threaded tube move away from the fixed rod. Then flip the movable rod downward to make the movable rod in a vertical state. Rotate the threaded tube again, and hold the insertion rod at the same time to make the insertion rod correspond to the insertion slot. As the threaded tube rotates, the threaded tube drives the insertion rod to move towards the direction of the insertion slot, and the insertion rod moves into the inner cavity of the insertion slot, thereby fixing the movable rod on one side of the valve stem.

[0015] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following preferred embodiments are specifically given and described in detail in conjunction with the drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front elevation three-dimensional view of the present utility model;

[0017] Figure 2 This is the front elevation three-dimensional view of the connecting column of the component of the present utility model;

[0018] Figure 3 This is the present utility model Figure 2 's bottom elevation three-dimensional view;

[0019] Figure 4 This is the bottom elevation three-dimensional view of the cross plate of the component of the present utility model;

[0020] Figure 5 This is the front elevation three-dimensional view of the movable rod of the component of the present utility model;

[0021] Figure 6 This is the front elevation three-dimensional view of the second connecting plate of the component of the present utility model;

[0022] Figure 7 This is the front elevation three-dimensional view of the threaded pipe of the component of the present utility model.

[0023] Reference numerals in the figure: 1, valve body; 2, flange; 3, flange hole; 4, valve rod; 5, connecting column; 6, fixed rod; 7, movable rod; 8, first connecting plate; 9, second connecting plate; 10, pin shaft; 11, threaded pipe; 12, external thread; 13, bearing; 14, insertion rod; 15, cross plate; 16, slot; 17, anti-slip sleeve. Specific embodiments

[0024] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model pertains. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] Please refer to Figure 1-7 , this utility model provides a technical solution: a straight-through stop valve, comprising a valve body 1. Flange plates 2 are fixedly sleeved on the outer edges of the valve body 1 near the bottom and the right side respectively. A plurality of flange holes 3 are formed in the flange plates 2. A valve rod 4 is inserted into the top of the valve body 1. A connecting column 5 is fixedly connected to the top of the valve rod 4. Fixing rods 6 are fixedly connected to both the left and right sides of the connecting column 5 near the top. One side of the fixing rod 6 away from the connecting column 5 is movably connected to a movable rod 7. The top end of the movable rod 7 is fixedly connected to a second connecting plate 9. First connecting plates 8 are provided on both the front and back sides of the second connecting plate 9. The first connecting plate 8 is fixedly connected to one end of the fixing rod 6. A pin shaft 10 is movably penetrated through the second connecting plate 9. Both ends of the pin shaft 10 are fixedly penetrated through the adjacent first connecting plates 8;

[0028] A plurality of anti-slip sleeves 17 are fixedly sleeved on the outer edge of the movable rod 7. The plurality of anti-slip sleeves 17 are arranged linearly from top to bottom in sequence. A threaded tube 11 is sleeved on the outer edge of the movable rod 7 near the top end. The threaded tube 11 is threadedly connected to the outer edge of the movable rod 7. External threads 12 are formed on both the outer edge of the fixing rod 6 and the outer edge of the movable rod 7. The external threads 12 are matched with the threaded tube 11. A bearing 13 is fixedly sleeved on the outer edge of the threaded tube 11. A plug rod 14 is fixedly connected to one side of the bearing 13 close to the connecting column 5. Cross plates 15 are fixedly connected to both the left and right sides of the connecting column 5 near the bottom. A slot 16 is formed in the bottom of the cross plate 15. The top end of the plug rod 14 is inserted into the inner cavity of the slot 16. The plug rod 14 is matched with the slot 16. The cross section of the plug rod 14 is L-shaped.

[0029] Working principle: During use, the valve body 1 is connected to the connecting pipe through the flange 2. When it is necessary to open or close the valve body 1, first rotate the threaded pipe 11. The threaded pipe 11 rotates on the outer edge of the movable rod 7 and the inner cavity of the bearing 13. Under the action of the external thread 12, the threaded pipe 11 moves downward relative to the movable rod 7. The threaded pipe 11 drives the bearing 13 and the insertion rod 14 to move downward. Stop rotating the threaded pipe 11 until the insertion rod 14 moves downward and away from the slot 16. Then flip the movable rod 7. The movable rod 7 flips around the pin shaft 10 until the movable rod 7 is parallel to the fixed rod 6. Then rotate the threaded pipe 11. Under the action of the external thread 12, the threaded pipe 11 moves relative to the movable rod 7 towards the fixed rod 6 until the threaded pipe 11 is sleeved on the outer edge of the fixed rod 6 and the threaded pipe 11 is jointly sleeved on the outer sides of the movable rod 7 and the fixed rod 6. At this time, the two movable rods 7 are unfolded, and the lever arm of the fixed rod 6 is lengthened. The fixed rod 6 and the valve rod 4 are driven to rotate by the movable rod 7, thereby opening and closing the valve body 1;

[0030] After the valve is opened and closed, rotate the threaded pipe 11 to move the threaded pipe 11 away from the fixed rod 6. Then flip the movable rod 7 downward so that the movable rod 7 is in the vertical position. Then rotate the threaded pipe 11 while holding the insertion rod 14 to make the insertion rod 14 correspond to the slot 16. As the threaded pipe 11 rotates, the threaded pipe 11 drives the insertion rod 14 to move towards the slot 16. The insertion rod 14 moves into the inner cavity of the slot 16 to fix one side of the movable rod 7 to the valve rod 4. Compared with the prior art, the device unfolds the two movable rods 7 and lengthens the lever arm of the fixed rod 6, which not only facilitates the rotation of the valve rod 4 but also reduces the overall volume of the device, providing convenience for use.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0035] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A straight-through stop valve, comprising a valve body, characterized in that: A valve rod is inserted into the top of the valve body. A connecting column is fixedly connected to the top of the valve rod. Fixing rods are fixedly connected to both the left and right sides of the connecting column near the top. One side of each fixing rod away from the connecting column is movably connected to a movable rod. A threaded tube is sleeved on the outer edge of the movable rod near the top end. A bearing is fixedly sleeved on the outer edge of the threaded tube. A plug rod is fixedly connected to the side of the bearing close to the connecting column. Cross plates are fixedly connected to both the left and right sides of the connecting column near the bottom. Slots are formed in the bottoms of the cross plates. The top end of the plug rod is inserted into the inner cavity of the slot. The threaded tube is threadedly connected to the outer edge of the movable rod.

2. The straight-through stop valve according to claim 1, characterized in that: Flange plates are fixedly sleeved on the outer edge of the valve body near the bottom and the right side respectively. A plurality of flange holes are formed in the flange plates.

3. A straight-through stop valve according to claim 1, characterized in that: A second connecting plate is fixedly connected to the top end of the movable rod. First connecting plates are arranged on both the front and back sides of the second connecting plate. The first connecting plates are fixedly connected to one end of the fixing rods. A pin shaft is movably penetrated through the second connecting plate. Both ends of the pin shaft are fixedly penetrated through the adjacent first connecting plates.

4. A straight-through stop valve according to claim 1, characterized in that: A plurality of anti-slip sleeves are fixedly sleeved on the outer edge of the movable rod. The plurality of anti-slip sleeves are arranged in a linear array from top to bottom in sequence.

5. A through stop valve according to claim 1, characterized in that: The plug rod and the slot are mutually matched. The cross section of the plug rod is L-shaped.

6. A straight-through stop valve according to claim 1, characterized in that: External threads are formed on both the outer edge of the fixing rod and the outer edge of the movable rod. The external threads are mutually matched with the threaded tube.

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