Heat-resistant polyethylene directly-buried ball valve

Abstract

The utility model discloses a heat-resistant polyethylene directly-buried ball valve, and relates to the technical field of directly-buried ball valves. Comprising a valve body and a valve ball, the lower protective cylinder is fixedly connected to the valve body, the top end of the lower protective cylinder is sleeved with an electric smelting sleeve, the electric smelting sleeve is fixedly connected with the lower protective cylinder, the top end, arranged in the electric smelting sleeve, of the lower protective cylinder is provided with an annular protective cylinder upper cover, and the protective cylinder upper cover is fixedly connected with the lower protective cylinder; an upper protection cylinder is inserted into the top of the electric smelting sleeve and fixedly connected with the electric smelting sleeve, the top of the upper protection cylinder is sleeved with and fixedly connected with a well ring, a well lid is arranged at the top of the well ring, and the well lid and the well ring are detachably connected and fixed; the top end of the valve rod is sleeved and fixedly connected with an operator, the top end of the operator is sleeved and fixedly connected with an extension rod, the top end of the extension rod is connected with a pipe joint, and the top end of the pipe joint penetrates through the annular protective cylinder upper cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to direct -buried ball valve technical field, concretely relates to a kind of heat-resistant polyethylene direct -buried ball valve. BACKGROUND

[0002] In recent years, heat-resistant polyethylene (PE-RT type II) is applied on heating pipe secondary pipe network, domestic hot water pipe network year by year with excellent corrosion resistance, long service life and other characteristics, heat-resistant polyethylene (PE-RT type II) pipe, pipe fitting, valve, filter.

[0003] Currently, most of the valves on the courtyard pipe network of the heating pipeline are installed in the valve inspection well. When the valve is opened and closed, the operator needs to operate in the well, which is time-consuming and laborious. UTILITY MODEL CONTENT

[0004] Therefore, the utility model embodiment provides a kind of heat-resistant polyethylene direct -buried ball valve to solve the problems of the above-mentioned technology.

[0005] To achieve the above purpose, the utility model embodiment provides the following technical scheme:

[0006] A kind of heat-resistant polyethylene direct -buried ball valve, including valve body and valve ball, valve ball is connected with valve stem;

[0007] It further includes hollow and both ends through the lower protection cylinder, the lower protection cylinder is fixedly connected on the valve body, and the top end of the valve stem is placed in the lower protection cylinder, the top end of the lower protection cylinder is sleeved with electric melting sleeve, the electric melting sleeve is fixedly connected with the lower protection cylinder, the top end of the lower protection cylinder placed in electric melting sleeve is provided with annular protection cylinder upper cover, the outer diameter of the protection cylinder upper cover is matched with the inner diameter of the electric melting sleeve, the protection cylinder upper cover is fixedly connected with the lower protection cylinder, the top of the electric melting sleeve is inserted with upper protection cylinder, the upper protection cylinder is fixedly connected with the electric melting sleeve, the top of the upper protection cylinder is sleeved and fixedly connected with well ring, the top of the well ring is provided with well lid, the well lid and the well ring are detachably connected and fixed between them.

[0008] The top of the valve stem is sleeved and fixedly connected with operator, the top of the operator is sleeved and fixedly connected with extension rod, the top of the extension rod is inserted and fixedly connected with pipe joint, the top of the pipe joint passes through annular protection cylinder upper cover, the top of the pipe joint is provided with structure matched with the shape of valve wrench.

[0009] Optionally, the bottom of the lower protection cylinder and the valve body are fixed by electric melting socket welding.

[0010] Optionally, the top of the lower protection cylinder and the protection cylinder upper cover are fixed by electric melting socket welding.

[0011] Optionally, the bottom of the operator is provided with a square pin hole matched with the shape of the valve rod, and the valve rod is fixed with the operator by insertion.

[0012] Optionally, the bottom of the extension rod is provided with a square pin hole matched with the shape of the top of the operator, and the operator is fixed with the extension rod by insertion.

[0013] Optionally, the top of the extension rod is provided with a directional pin hole matched with the shape of the bottom end of the pipe joint, and the pipe joint is fixed with the extension rod by insertion.

[0014] Optionally, the sidewall of the electric melting sleeve is provided with a water overflow hole penetrating to the inner side of the upper protection cylinder.

[0015] Optionally, the well lid and the well ring are connected and fixed by a bolt set.

[0016] Optionally, a first sealing ring is arranged between the pipe joint and the upper cover of the protection cylinder, and the pipe joint and the upper cover of the protection cylinder are in interference fit.

[0017] The utility model at least has the following beneficial effects:

[0018] The utility model discloses a valve well structure formed by the lower protection cylinder and the upper protection cylinder arranged at the top of the valve body, and the valve rod is connected to the position close to the well lid of the upper protection cylinder through the operator, the extension rod and the pipe joint fixed and connected in sequence, so that the operator can operate the valve wrench in the upper protection cylinder on the ground, the pipe joint is controlled to rotate, and the extension rod, the operator, the valve rod and the valve ball are sequentially driven to rotate, thereby realizing the control of the valve, saving time and effort and facilitating operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the prior art and the utility model, the following will briefly introduce the drawings needed in the description of the prior art and the utility model embodiment. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained by the provided drawings without creative labor.

[0020] The structure, proportion, size and the like shown in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions of the implementation of the utility model, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the utility model can produce, should still fall within the scope of the technical content disclosed by the utility model.

[0021] Figure 1The first visual angle structure schematic view of one embodiment of the utility model;

[0022] Figure 2 The inside structure schematic view of lower protection cylinder and upper protection cylinder of one embodiment of the utility model;

[0023] Figure 3 The second visual angle structure schematic view of one embodiment of the utility model;

[0024] Figure 4 For Figure 3 The A-A part cross section structure schematic view of the utility model.

[0025] Mark explanation:

[0026] 1, well lid;2, well ring;3, upper protection cylinder;4, electric melting sleeve;5, pipe joint;6, first sealing ring;7, extension rod;8, lower protection cylinder;9, operator;10, second sealing ring;11, third sealing ring;12, valve rod;13, fourth sealing ring;14, support ring;15, valve ball;16, valve body;17, end pipe;18, protection cylinder upper cover;19, overflow hole. Specific implementation

[0027] In order to make the purpose, technical scheme and advantage of the application more clear and intelligible, the application is further described in detail below in combination with the drawings and embodiments.It should be understood that the specific embodiments described herein are only used to explain the application, and not to limit the application.

[0028] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two.The terms "first", "second", "third", "fourth" and the like (if exist) in the specification and claims of the utility model and the above-mentioned drawings are intended to distinguish the objects referred to.For the scheme with time sequence flow, this kind of term expression mode is not necessarily understood as describing a specific order or sequence, for the scheme of device structure, this kind of term expression mode also does not exist the distinction of importance, position relation and the like.

[0029] In addition, the terms "include", "have" and their any deformation are intended to cover the non-exclusive inclusion, for example, the process, method, system, product or equipment including a series of steps or units does not have to be limited to the steps or units explicitly listed, but can also include other steps or units inherent to these processes, methods, products or equipment, or the steps or units added based on the further optimization scheme of the utility model concept.

[0030] As Figures 1-4The utility model discloses a kind of heat-resistant polyethylene direct-buried ball valves shown, including valve body 16, the valve body 16 is provided with valve ball 15, the both sides of the valve body 16 are provided with end pipe 17, for connecting pipeline, the top of the valve body 16 is provided with valve stem 12, the valve stem 12 is fixedly connected with the valve ball 15, valve stem 12 is rotatably connected between valve body 16;

[0031] It further includes hollow and both ends through the lower protection cylinder 8, the lower protection cylinder 8 is fixedly connected on the valve body 16, and the top of the valve stem 12 is placed in the lower protection cylinder 8, the top of the lower protection cylinder 8 is sleeved with electric melting sleeve 4, the electric melting sleeve 4 is fixedly connected with the lower protection cylinder 8, the top of the lower protection cylinder 8 placed in electric melting sleeve 4 is provided with annular protection cylinder upper cover 18, the outer diameter of the protection cylinder upper cover 18 is adapted to the inner diameter of electric melting sleeve 4, the protection cylinder upper cover 18 is fixedly connected with the lower protection cylinder 8, the top of the electric melting sleeve 4 is inserted with upper protection cylinder 3, the upper protection cylinder 3 is fixedly connected with the electric melting sleeve 4, the top of the upper protection cylinder 3 is sleeved and fixedly connected with well ring 2, the top of the well ring 2 is provided with well lid 1, the well lid 1 is detachably connected and fixed between the well ring 2;

[0032] The top of the valve stem 12 is sleeved and fixedly connected with operator 9, the top of the operator 9 is sleeved and fixedly connected with extension rod 7, the top of the extension rod 7 is inserted and fixedly connected with pipe joint 5, the top of the pipe joint 5 passes through annular protection cylinder upper cover 18, the top of the pipe joint 5 is provided with structure adapted to the shape of valve wrench.

[0033] The above-mentioned direct-buried ball valve adopts all-plastic valve, and the material is heat-resistant polyethylene (PE-RT type II), which has the advantages of corrosion resistance and long service life; it mainly includes valve body 16, end pipe 17 is arranged on the both sides of the valve body 16, the tubular part of the end pipe 17 on the both sides of the valve is designed according to the size of the spigot end, and when connected with pipe and pipe fitting, electric melting butt welding or electric melting sleeve welding can be used, the valve body 16 is provided with valve ball 15 inside, a supporting ring 14 is arranged between the bottom of the valve ball 15 and the valve body 16, the valve ball 15 rotates to control the opening and closing of the valve, the fourth sealing ring 13 is arranged between the valve ball 15 and the valve body 16, the valve stem 12 is connected to the top of the valve ball 15, the valve stem 12 penetrates the top of the valve body 16 and extends outside the valve body 16, and the third sealing ring 11 is arranged between the valve stem 12 and the valve body 16;

[0034] An operator 9 is connected to the top of the valve stem 12 extending out of the top of the valve body 16, the bottom of the operator 9 is provided with a pin hole, so that the top end of the valve stem 12 can be inserted into the pin hole at the bottom of the operator 9, and the pin hole is provided as a square hole, which is matched with the shape of the top end of the valve stem 12, the rotation of the operator 9 can drive the valve stem 12 to rotate, thereby controlling the rotation of the valve ball 15, the second sealing ring 10 is arranged between the operator 9 and the valve body 12, the top of the operator 9 is also provided with a square structure, and an extension rod 7 is sleeved on the top of the operator 9, specifically, a square pin hole matched with the shape of the top of the operator 9 is formed in the bottom of the extension rod 7, the top of the operator 9 is inserted into the pin hole in the bottom of the extension rod 7, and the rotation of the extension rod 7 can drive the operator 9 to rotate; a pipe joint 5 is further sleeved on the top of the extension rod 7, the top of the extension rod 7 is provided as a square structure, the bottom of the pipe joint 5 is provided with a square pin hole matched with the structure of the top of the extension rod 7, the extension rod 7 is inserted into the pin hole in the bottom of the pipe joint 5, so that the rotation of the pipe joint 5 can drive the extension rod 7 to rotate, the top of the pipe joint 5 is provided as a structure matched with the shape of a valve wrench, by sleeving the valve wrench on the top of the pipe joint 5, rotating the pipe joint 5, and then sequentially driving the extension rod 7, the operator 9, the valve stem 12 and the valve ball 15 to rotate through the pipe joint 5, the control of the opening and closing of the valve is realized.

[0035] Meanwhile, a protection cylinder is sleeved outside the valve ball 15 control structure, the protection cylinder is divided into two parts, which are a lower protection cylinder 8 and an upper protection cylinder 3, the lower protection cylinder 8 is fixed on the top of the valve body 16, and the operator 9 and the extension rod 7 are sleeved inside the lower protection cylinder 8, the lower protection cylinder 8 and the valve body 16 are fixed by electric melting socket welding, the top end of the lower protection cylinder 8 and the bottom end of the upper protection cylinder 3 are connected and fixed by an electric melting sleeve, the top end of the lower protection cylinder 8 is welded on the inner side wall of the electric melting sleeve, the bottom end of the upper protection cylinder 3 is welded on the inner side wall of the electric melting sleeve, and a gap is arranged between them, a protection cylinder upper cover 18 is arranged between the upper protection cylinder 3 and the lower protection cylinder 8, the protection cylinder upper cover 18 is fixed with the lower protection cylinder 8 by electric melting socket welding, the protection cylinder upper cover 18 is annular structure, which is fixed on the top end of the lower protection cylinder 8, the inner diameter is matched with the outer diameter of the pipe joint 5, specifically, the middle part of the pipe joint 5 is provided with a stepped structure recessed inward, the groove bottom outer diameter is matched with the inner diameter of the protection cylinder upper cover 18, the outer diameter of the protection cylinder upper cover 18 is matched with the inner diameter of the electric melting sleeve, that is, the pipe joint 5 is clamped on the upper and lower sides of the protection cylinder upper cover 18, and a pipe joint 5 sealing ring is arranged between the pipe joint 5 and the protection cylinder upper cover 18.

[0036] In further embodiments, the side wall of the electric melting sleeve is provided with a water overflow hole 19, which penetrates to the inner side of the upper protection cylinder 3.

[0037] By setting the overflow hole 19 on the outer wall of the electric melting sleeve, when water accumulation occurs in rainy weather and other situations, the overflow hole 19 on the electric melting sleeve wall can drain the accumulated water to the soil around the protection cylinder, facilitating the operation personnel to operate the valve.

[0038] The well lid 1 and the well ring 2 are connected and fixed by a bolt set.

[0039] Further, the first sealing ring 6 is arranged between the pipe joint 5 and the upper cover 18 of the protection cylinder, and the pipe joint 5 and the upper cover 18 of the protection cylinder are connected in an interference fit manner, and the pipe joint 5 can rotate.

[0040] The utility model has the advantages of:

[0041] 1) The valve top is provided with a protection cylinder and a well ring well lid (equivalent to a manhole function), and the valve does not need to be installed in a separate valve well, which can greatly reduce the construction cost;

[0042] 2) After the pipe network is operated, the operator does not need to go down the well, and can operate the valve on the ground, which is more convenient;

[0043] 3) The heat-resistant polyethylene (PE-RT type II) directly buried ball valve is a full-plastic valve, which has the characteristics of corrosion resistance and long service life.

[0044] The above several specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments.

[0045] The technical features of the above embodiments can be combined arbitrarily (as long as the combination of the technical features does not exist contradiction), in order to make the description simple, the above technical features of the embodiments are not described all possible combinations; these embodiments not explicitly written, also should be considered as the scope of the present application.

[0046] The utility model is described in detail above by general description and specific embodiments. It should be noted that without departing from the concept of the utility model, it is obvious that some modifications and improvements can be made to these specific embodiments, which are within the scope of protection of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A heat-resistant polyethylene direct-buried ball valve, comprising a valve body and a valve ball, wherein a valve stem is connected to the valve ball; characterized in that: It also includes a hollow lower protective cylinder with through-ends, the lower protective cylinder being fixedly connected to the valve body, and the top end of the valve stem being placed inside the lower protective cylinder. An electrofusion sleeve is fitted onto the top end of the lower protective cylinder, and the electrofusion sleeve is fixedly connected to the lower protective cylinder. An annular protective cylinder cover is provided at the top end of the lower protective cylinder placed inside the electrofusion sleeve, the outer diameter of the protective cylinder cover being adapted to the inner diameter of the electrofusion sleeve. The protective cylinder cover is fixedly connected to the lower protective cylinder. An upper protective cylinder is inserted into the top of the electrofusion sleeve, and the upper protective cylinder is fixedly connected to the electrofusion sleeve. A well ring is fitted onto and fixedly connected to the top of the upper protective cylinder, and a well cover is provided on the top of the well ring. The well cover and the well ring are detachably connected and fixedly connected. An operator is fitted and fixedly connected to the top of the valve stem. An extension rod is fitted and fixedly connected to the top of the operator. A pipe connector is inserted and fixedly connected to the top of the extension rod. The top of the pipe connector passes through the top cover of the annular protective cylinder. The top of the pipe connector is designed to fit the shape of the valve wrench.

2. The heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: The bottom of the lower protective cylinder is fixed to the valve body by electrofusion socket welding.

3. The heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: The top of the lower protective cylinder is fixed to the upper cover of the protective cylinder by electrofusion socket welding.

4. The heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: The bottom of the actuator is provided with a square pin hole that matches the shape of the valve stem, and the valve stem is inserted and fixed to the actuator.

5. A heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: The bottom of the extension rod has a square pin hole that matches the shape of the top of the operator, and the operator is inserted and fixed to the extension rod.

6. The heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: The top of the extension rod has a directional pin hole that matches the shape of the bottom end of the pipe connector, and the pipe connector is inserted and fixed to the extension rod.

7. The heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: The side wall of the electrofusion sleeve is provided with an overflow hole, which extends to the inside of the upper protective sleeve.

8. A heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: The manhole cover and the manhole ring are connected and fixed by a bolt group.

9. A heat-resistant polyethylene direct-buried ball valve according to claim 1, characterized in that: A first sealing ring is provided between the pipe joint and the protective cylinder cover, and the pipe joint and the protective cylinder cover are interference-fitted.

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