High-pressure stop valve with movable valve clack

Abstract

The utility model relates to the technical field of valves, and discloses a high-pressure stop valve with a movable valve clack, which is suitable for a drift diameter range from phi5mm to phi150mm, and particularly comprises a valve body, the valve body is provided with an output port and an input port which are communicated with a valve cavity of the valve body, the output port is communicated with the valve cavity through a valve port, and a liftable valve rod is mounted on the valve body. The movable valve clack is stably assembled at the lower end of the valve rod through the retainer ring for the hole, when the coaxiality of the valve rod and the valve body deviates, the movable valve clack at the front end of the valve rod can slightly move by 360 degrees, the problem that the coaxiality of the valve rod and the valve body deviates in the machining process of the stop valve is solved, the coaxiality of the movable valve clack and the valve body is guaranteed, and the machining efficiency of the stop valve is improved. Therefore, the movable valve clack can be aligned with the valve port, the situation of valve port leakage caused by coaxiality deviation is avoided, and if the valve port leakage is caused when deviation exists between the purchased valve rod and the valve body, the valve rod can be replaced by adopting the structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, specifically is high pressure stop valve with movable valve clack. BACKGROUND

[0002] The stop valve on the market is used, the hand wheel rotates clockwise, drives the valve rod and the valve clack to move downward, when the valve clack integrated with the valve rod and the valve port on the valve seat tightly adhere, the inlet and outlet passage of the stop valve are blocked, and the use purpose of the stop valve is reached.

[0003] Because the valve seat and the valve body of the majority of stop valves circulating on the market are simultaneously machined, the valve rod and the valve seat need to have high coaxiality, and the valve clack integrated with the valve rod cannot block the valve port on the valve seat slightly, and leakage is caused, and this situation occurs frequently, especially in the system of high pressure gas, the stop valve is more difficult to achieve zero leakage, and therefore a high pressure stop valve with movable valve clack needs to be designed. SUMMARY

[0004] To solve the technical problems in the background art, the utility model provides a high pressure stop valve with movable valve clack.

[0005] The high pressure stop valve with movable valve clack provided by the utility model is suitable for the range of φ5mm~φ150mm, specifically includes a valve body, the valve body has an output port and an input port in communication with the valve cavity, and the output port and the valve cavity are communicated through a valve port, a liftable valve rod is installed on the valve body, one end of the valve rod extends into the valve cavity and is provided with a movable valve clack, the movable valve clack is assembled with the end of the valve rod through a hole stop ring, and the valve rod, the movable valve clack and the valve port are coaxially and centrally arranged, and the opening and closing of the valve port and the opening size are controlled through the movable valve clack.

[0006] As a further optimized scheme of the utility model, the lower end of the valve rod is provided with an opening matched with the upper end of the movable valve clack, and the hole stop ring is sleeved on the outer periphery of the upper end of the movable valve clack, when assembled, the upper end of the movable valve clack is inserted into the opening of the lower end of the valve rod and clamped through the hole stop ring.

[0007] As a further optimized scheme of the utility model, the inner wall of the opening of the lower end of the valve rod and the outer periphery of the upper end of the movable valve clack are both provided with an annular groove matched with the hole stop ring, when the upper end of the movable valve clack is inserted into the opening of the lower end of the valve rod, the inner ring and the outer ring of the hole stop ring are respectively tightly clamped with the adjacent annular grooves.

[0008] As a further optimization scheme of the utility model, the lower end outer periphery of the valve rod and the inner wall of the movable valve flap are both provided with annular grooves matched with the hole stopper, and when the lower end of the valve rod is inserted into the movable valve flap, the inner ring and the outer ring of the hole stopper are respectively tightly clamped with the adjacent annular grooves.

[0009] As a further optimization scheme of the utility model, the valve body is provided with a bracket for covering the valve rod hole, the inner cavity upper end of the bracket is rotatably provided with an adjusting bolt, the inner cavity lower end of the bracket is sleeved with a valve rod nut which can slide up and down, the upper end of the adjusting bolt extends to the outside of the bracket and is provided with a hand wheel, the lower end of the adjusting bolt is threadedly connected with the valve rod nut, and the lower end of the valve rod nut is detachably connected with the upper end of the valve rod.

[0010] As a further optimization scheme of the utility model, the valve body is provided with a bracket for covering the valve rod hole, the inner cavity upper end of the bracket is rotatably provided with an adjusting bolt, the inner cavity lower end of the bracket is sleeved with a valve rod nut which can slide up and down, the upper end of the adjusting bolt extends to the outside of the bracket and is provided with a hand wheel, the lower end of the adjusting bolt is threadedly connected with the valve rod nut, and the lower end of the valve rod nut is detachably connected with the upper end of the valve rod.

[0011] As a further optimization scheme of the utility model, the valve body is provided with a bracket for covering the valve rod hole, the inner cavity upper end of the bracket is rotatably provided with an adjusting bolt, the inner cavity lower end of the bracket is sleeved with a valve rod nut which can slide up and down, the upper end of the adjusting bolt extends to the outside of the bracket and is provided with a hand wheel, the lower end of the adjusting bolt is threadedly connected with the valve rod nut, and the lower end of the valve rod nut is detachably connected with the upper end of the valve rod.

[0012] As a further optimization scheme of the utility model, the lower end of the bracket is provided with a sliding groove arranged in a longitudinal direction on both sides, the valve rod nut is provided with protrusions matched with the sliding grooves on both sides, and the protrusions on both sides of the valve rod nut are respectively slidably connected with the adjacent sliding grooves.

[0013] As a further optimization scheme of the utility model, the inner hole of the valve rod nut is provided with an internal thread and is meshingly connected with the external thread of the lower end of the adjusting bolt, the lower end of the valve rod nut is provided with a T-shaped groove, and the lower end of the T-shaped groove is an opening, and the upper end of the valve rod is provided with a protrusion matched with the T-shaped groove and tightly clamped.

[0014] The high-pressure stop valve with a movable valve flap has the following beneficial effects:

[0015] The valve rod and the movable valve flap adopt a split structure design, the movable valve flap is stably assembled to the lower end of the valve rod through the hole stop ring, when the coaxiality of the valve rod and the valve body has deviation, the front end movable valve flap of the valve rod can be moved by 360 degrees, the problem of the coaxiality deviation of the valve rod and the valve body in the stop valve processing is solved, thereby the coaxiality of the movable valve flap and the valve body is ensured, and then the movable valve flap can be aligned with the valve port, the valve port leakage caused by the coaxiality deviation is avoided, and the structure of the utility model can be replaced if the valve rod and the valve body purchased have deviation.

[0016] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is structural schematic view of the utility model embodiment one;

[0018] Figure 2 It is structural schematic view of the utility model embodiment two.

[0019] BRIEF DESCRIPTION OF DRAWINGS: 1, hand wheel;2, lock nut;3, support;4, adjusting bolt;5, valve rod nut;6, support bolt;7, valve body;8, sealing bush;9, valve rod;10, hole stop ring;11, movable valve flap;12, output port;13, valve port;14, input port. DETAILED DESCRIPTION

[0020] The embodiments of the utility model are described in detail below, the examples of the embodiments are represented in the drawings, wherein the same or similar symbols represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0021] It needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0022] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0023] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0025] Please refer to Figure 1 and Figure 2 , the high-pressure stop valve with movable valve disc, suitable for the range of φ5mm~φ150mm, specifically comprising a valve body 7, the valve body 7 has an output port 12 and an input port 14 which are communicated with the valve cavity, and the output port 12 and the valve cavity are communicated through the valve port 13, the valve body 7 is installed with the liftable valve rod 9, one end of the valve rod 9 extends into the valve cavity and is installed with the movable valve disc 11, the movable valve disc 11 is assembled with the end of the valve rod 9 through the hole with the check ring 10, and the valve rod 9, the movable valve disc 11 and the valve port 13 are coaxially centered, the opening and closing of the valve port 13 and the opening size are controlled by the movable valve disc 11.

[0026] By adjusting the height of the valve rod 9, the movable valve disc 11 is lifted synchronously by the valve rod 9, that is, the gap size between the movable valve disc 11 and the valve port 13 is adjusted to control the valve flow, when the lower end of the movable valve disc 11 is inserted into the valve port 13, the two are closely fitted, and the communication between the valve port 13 and the input port 14 is blocked.

[0027] Specifically, the valve body 7 is provided with a bracket 3 for covering the valve rod hole, the inner cavity upper end of the bracket 3 is rotatably provided with an adjusting bolt 4, the inner cavity lower end of the bracket 3 is sleeved with a valve rod nut 5 which can slide up and down, the upper end of the adjusting bolt 4 extends to the outside of the bracket 3 and is provided with a hand wheel 1, the lower end of the adjusting bolt 4 is threadedly connected with the valve rod nut 5, and the lower end of the valve rod nut 5 is detachably connected with the upper end of the valve rod 9;

[0028] Through the rotation of the hand wheel 1, the adjusting bolt 4 drives the valve rod nut 5 to lift, thereby driving the valve rod 9 to lift synchronously, so as to adjust the combined state of the movable valve disc 11 and the valve port 13, and facilitate the adjustment of the valve flow;

[0029] Further, the hand wheel 1 is installed at the upper end of the adjusting bolt 4 and is locked by a locking nut 2, the lower end of the adjusting bolt 4 has a trapezoidal thread and is threadedly connected with the valve rod nut 5.

[0030] Further, the valve rod hole of the valve body 7 has an annular stepped surface, and the annular stepped surface is provided with a sealing bushing 8, the lower end of the bracket 3 is inserted into the valve rod hole and presses the sealing bushing 8, the bracket 3 is fixed with the valve body 7 through a bracket bolt 6, and the upper end of the valve rod 9 extends to the inner cavity lower end of the bracket 3 and is detachably connected with the valve rod nut 5 through clamping;

[0031] Further, the outer diameter of the sealing bushing 8 adopts a piston static sealing mode to ensure direct sealing with the valve body 7, and the inner diameter of the sealing bushing 8 adopts a piston rod dynamic sealing mode to ensure sealing with the valve rod 9;

[0032] The sealing bushing 8 isolates the high-pressure gas in the input port 14 from entering the upper part of the valve rod 9, preventing gas leakage, and when the hand wheel 1 rotates left and right, the trapezoidal thread in the adjusting bolt 4 and the valve rod nut 5 drives the valve rod 9 and the valve disc 11 to move up and down simultaneously, realizing the opening or closing of the stop valve;

[0033] Further, the lower end of the bracket 3 is provided with a sliding groove arranged longitudinally on both sides, the valve rod nut 5 is provided with protrusions on both sides which are adapted to the sliding grooves, the protrusions on both sides of the valve rod nut 5 are respectively slidably connected with the adjacent sliding grooves, through the sliding connection of the protrusions and the sliding grooves, the valve rod nut 5 can be longitudinally guided, and the valve rod nut 5 can also be limited from rotating with the adjusting bolt 4, when the hand wheel 1 drives the adjusting bolt 4 to rotate, the valve rod nut 5 converts the torque into lifting force, realizing the lifting of the valve rod nut 5 driven by the adjusting bolt 4, thereby realizing the synchronous lifting adjustment of the valve rod 9 and the movable valve disc 11;

[0034] Furthermore, the inner hole of the valve stem nut 5 has an internal thread that engages with the lower end external thread of the adjusting bolt 4. The lower end of the valve stem nut 5 has a T-shaped groove with an open lower end. The upper end of the valve stem 9 has a protrusion that matches and tightly engages with the T-shaped groove, facilitating quick assembly between the valve stem 9 and the valve stem nut 5 and aiding in the replacement and maintenance of actual parts.

[0035] Example 1

[0036] When the diameter of valve port 13 is in the range of φ5mm~φ40mm, such as Figure 1 As shown, the lower end of the valve stem 9 has an opening that matches the upper end of the movable valve disc 11. The retaining ring 10 is fitted around the upper outer periphery of the movable valve disc 11. During assembly, the upper end of the movable valve disc 11 is inserted into the lower end opening of the valve stem 9 and secured by the retaining ring 10.

[0037] Specifically, the inner wall of the lower end opening of the valve stem 9 and the outer periphery of the upper end of the movable valve disc 11 are provided with annular grooves that are compatible with the retaining ring 10 for the hole. When the upper end of the movable valve disc 11 is inserted into the lower end opening of the valve stem 9, the inner ring and outer ring of the retaining ring 10 for the hole are tightly engaged with the adjacent annular grooves respectively.

[0038] Furthermore, the diameter of the retaining ring 10 is equal to the diameter of the valve port 13, so that the retaining ring 10 bears equal upward and downward forces most of the time and is in a state of no tension, thereby extending the actual service life of the retaining ring 10.

[0039] It should be noted that during the actual assembly process, the retaining ring 10 for the hole should first be fitted into the annular groove at the upper end of the movable valve disc 11. Then, the two free ends of the retaining ring 10 should be squeezed together, causing the retaining ring 10 to undergo elastic deformation and be in a state of inward contraction and opening closure. Next, the upper end of the movable valve disc 11 should be inserted into the lower end opening of the valve stem 9, and the retaining ring 10 should be released. As the movable valve disc 11 is continuously inserted, when the two annular grooves are on the same horizontal line, the retaining ring 10 expands outward and engages with the annular groove on the inner wall of the lower end opening of the valve stem 9, thereby achieving quick and stable assembly of the valve stem 9 and the movable valve disc 11.

[0040] Example 2

[0041] When the valve port 13 has a diameter ranging from φ40mm to φ150mm, such as Figure 2 As shown, the lower outer circumference of the valve stem 9 and the inner wall of the movable valve disc 11 are both provided with annular grooves that are adapted to the retaining ring 10 for the hole. When the lower end of the valve stem 9 is inserted into the movable valve disc 11, the inner and outer rings of the retaining ring 10 for the hole are tightly engaged with the adjacent annular grooves respectively.

[0042] Further, in the use scenario of the embodiment, the diameter of the valve stem 9 is about φ30mm, so the valve stem 9 is assembled by inserting the hole retainer 10 into the movable valve disc 11, at this time the hole retainer 10 is subjected to upward thrust, and the diameter of the hole retainer 10 is one or several times smaller than the diameter of the valve port 13, so the upward thrust on the hole retainer 10 is within a controllable range and does not affect the service life;

[0043] It should be noted that in the actual assembly process, the hole retainer 10 needs to be sleeved on the annular groove at the lower end of the valve stem 9, then the two free ends of the hole retainer 10 are extruded together, so that the hole retainer 10 is elastically deformed to be in a state of retraction and opening closure, then the lower end of the valve stem 9 is inserted into the assembly hole of the movable valve disc 11, the hole retainer 10 is loosened, and as the valve stem 9 continues to be inserted, when the two annular grooves are on the same horizontal line, the hole retainer 10 expands outward and is clamped with the annular groove on the inner wall of the assembly hole, thereby realizing quick and stable assembly of the valve stem 9 and the movable valve disc 11.

[0044] In summary, the high-pressure stop valve with a movable valve disc provided by the utility model has a split structure design of the valve stem 9 and the movable valve disc 11, the movable valve disc 11 is quickly and stably assembled to the lower end of the valve stem 9 through the hole retainer 10, when the coaxiality of the valve stem 9 and the valve body 7 deviates, the front end movable valve disc of the valve stem can move by 360 degrees, thereby ensuring the coaxiality of the movable valve disc 11 and the valve body 7, solving the coaxiality deviation problem of the valve stem 9 and the valve body 7 in the stop valve processing, and thereby enabling the movable valve disc 11 to align with the valve port 13, avoiding the valve port 13 leakage caused by the coaxiality deviation, if the purchased valve stem and valve body have deviation, causing the valve port to leak, the structure of the utility model is used for replacement.

[0045] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. High-pressure stop valve with a mobile disc, comprising a valve body (7), characterized in that, The valve body (7) has an output port (12) and an input port (14) in communication with the valve cavity, and the output port (12) and the valve cavity are in communication through the valve port (13), the valve body (7) is provided with a liftable valve rod (9), one end of the valve rod (9) extends into the valve cavity and is provided with a movable valve flap (11), the movable valve flap (11) is assembled with the end of the valve rod (9) through the hole sealing ring (10), and the valve rod (9), the movable valve flap (11) and the valve port (13) are coaxially aligned, the opening and closing of the valve port (13) are controlled by the movable valve flap (11).

2. High-pressure stop valve with a mobile disc according to claim 1, characterized in that, The lower end of the valve rod (9) has an opening matched with the upper end of the movable valve flap (11), and the hole sealing ring (10) is sleeved on the outer periphery of the upper end of the movable valve flap (11), when assembled, the upper end of the movable valve flap (11) is inserted into the opening of the lower end of the valve rod (9) and clamped by the hole sealing ring (10).

3. High-pressure stop valve with a mobile disc according to claim 2, characterized in that, The inner wall of the lower end opening of the valve rod (9) and the outer periphery of the upper end of the movable valve flap (11) are both provided with an annular groove matched with the hole sealing ring (10), when the upper end of the movable valve flap (11) is inserted into the lower end opening of the valve rod (9), the inner ring and the outer ring of the hole sealing ring (10) are tightly clamped with the adjacent annular grooves respectively.

4. The high-pressure globe valve according to claim 1, wherein The outer periphery of the lower end of the valve rod (9) and the inner wall of the movable valve flap (11) are both provided with an annular groove matched with the hole sealing ring (10), when the lower end of the valve rod (9) is inserted into the movable valve flap (11), the inner ring and the outer ring of the hole sealing ring (10) are tightly clamped with the adjacent annular grooves respectively.

5. High-pressure stop valve with a mobile disc according to any one of claims 1 to 4, characterized in that, The valve body (7) is provided with a bracket (3) for covering the valve rod hole, the inner cavity upper end of the bracket (3) is rotatably provided with an adjusting bolt (4), the inner cavity lower end of the bracket (3) is sleeved with a valve rod nut (5) which can slide up and down, the upper end of the adjusting bolt (4) extends to the outside of the bracket (3) and is provided with a hand wheel (1), the lower end of the adjusting bolt (4) is threadedly connected with the valve rod nut (5), and the lower end of the valve rod nut (5) is detachably connected with the upper end of the valve rod (9).

6. High-pressure stop valve with a mobile disc according to claim 5, characterized in that, The valve body (7) has an annular stepped surface in the valve rod hole, and a sealing bushing (8) is arranged on the annular stepped surface, the lower end of the bracket (3) is inserted into the valve rod hole and presses the sealing bushing (8), the upper end of the valve rod (9) penetrates the inner hole of the sealing bushing (8) and extends to the inner cavity lower end of the bracket (3) and is clamped and assembled with the valve rod nut (5).

7. High-pressure stop valve with a mobile disc according to claim 6, characterized in that, The outer diameter of the sealing bushing (8) is directly sealed with the valve body (7) by using piston static sealing, and the inner diameter of the sealing bushing (8) is sealed with the valve rod (9) by using piston rod dynamic sealing.

8. The high-pressure globe valve according to claim 5, wherein The lower end of the bracket (3) is provided with a longitudinally arranged sliding groove on both sides, the valve rod nut (5) has protrusions matched with the sliding grooves on both sides, and the protrusions on both sides of the valve rod nut (5) are respectively slidably connected with the adjacent sliding grooves.

9. High-pressure stop valve with a mobile disc according to claim 8, characterized in that, The inner hole of the valve stem nut (5) has internal threads and is in engagement with the external threads of the lower end of the adjusting bolt (4), the lower end of the valve stem nut (5) is provided with a T-shaped slot, and the lower end of the T-shaped slot is open, and the upper end of the valve stem (9) has a protrusion and is tightly connected with the T-shaped slot.

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