Wear-resistant coating structure of valve core of ceramic ball valve

Abstract

The utility model relates to the technical field of ball valves, and discloses a ceramic ball valve element wear-resistant coating structure which comprises a valve element, the valve element comprises a ceramic structure body, a conical hole is formed in the outer wall of the ceramic structure body, a conical protruding block is arranged in the ceramic structure body, the inner wall of the conical hole is attached to the outer wall of the conical protruding block, and the inner wall of the conical hole is attached to the outer wall of the conical protruding block. One side of each conical convex block penetrates through the outer wall of the ceramic structure main body, the side, away from the ceramic structure main body, of each conical convex block is fixedly connected with a wear-resistant layer, the inner wall of each wear-resistant layer is attached to the outer wall of the ceramic structure main body, and a through hole is formed in the ceramic structure main body and penetrates through the ceramic structure main body and the wear-resistant layer. According to the ceramic ball valve, operation of the wear-resistant coating structure of the valve element is completed through the through hole, the conical hole, the conical protruding block, the wear-resistant layer and the ceramic structure body, and therefore the situation that a ceramic ball valve with a single coating is prone to being abraded, peeled off or corroded and permeated under the extreme working condition is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field especially ceramic ball valve valve core wear -resisting coating structure. BACKGROUND

[0002] Ceramic ball valve is a kind of high-performance valve with structural ceramic material (such as alumina, zirconia, silicon carbide, etc.) as core component. At present, ceramic ball valve is widely used in harsh working conditions that traditional metal valves cannot undertake in industrial field due to its corrosion resistance, wear resistance, high temperature resistance and high sealing property.

[0003] However, the existing coating of ceramic ball valve is usually single coating (such as tungsten carbide, alumina);Single-coated ceramic ball valve is prone to wear, peeling or corrosion penetration under extreme conditions. For example, the porosity of tungsten carbide coating by high-velocity oxy-fuel spraying (HVOF) is high, and penetration corrosion is prone to occur in corrosive medium. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides ceramic ball valve valve core wear -resisting coating structure, aims at improving the situation that single-coated ceramic ball valve is prone to wear, peeling or corrosion penetration under extreme conditions.

[0005] To achieve the above object, the utility model provides the following technical scheme: ceramic ball valve valve core wear -resisting coating structure, including valve core, the valve core includes ceramic structure main part, the outer wall of ceramic structure main part is equipped with tapered hole, the inside of ceramic structure main part is provided with tapered lug, the inner wall of tapered hole and the outer wall of tapered lug are pasted, one side of tapered lug passes through the outer wall of ceramic structure main part, the side of ceramic structure main part away from the side of ceramic structure main part of tapered lug is fixedly connected with wear -resisting layer, the inner wall of wear -resisting layer and the outer wall of ceramic structure main part are pasted, the ceramic structure main part is equipped with through -hole, the through -hole passes through ceramic structure main part and wear -resisting layer.

[0006] Preferably, the two sides of the valve core are provided with a base, and the through hole passes through the base.

[0007] Preferably, the side of the base away from the valve core is provided with a connecting seat, and the connecting seat is used for connecting the pipeline.

[0008] Preferably, a valve body is arranged between the two connecting seats, and the valve core and the base are arranged in the interior of the valve body.

[0009] Preferably, a valve rod is arranged on the upper side of the valve core, the valve rod passes through the upper side of the valve body, and the valve rod and the upper side of the valve body are rotationally connected.

[0010] Preferably, a valve handle is connected to the outer wall of the valve rod.

[0011] Preferably, the circumference of the tapered hole on the outer wall of the ceramic structure body is smaller than the circumference inside the ceramic structure body.

[0012] The utility model has the advantages of the following:

[0013] 1. In the utility model, the through hole is arranged on the ceramic structure body, the tapered hole is arranged on the outer wall of the ceramic structure body, the inner wall of the tapered hole and the outer wall of the tapered protrusion are attached, the wear-resistant layer and the tapered protrusion are fixedly connected, the outer wall of the ceramic structure body and the inner wall of the wear-resistant layer are attached, and the wear-resistant coating structure of the valve core is completed, so that the single coating ceramic ball valve is improved in the case that wear, peeling or corrosion penetration easily occurs under extreme working conditions.

[0014] 2. In the utility model, the tapered hole is designed in the tapered shape of narrow outside and wide inside on the outer wall of the ceramic structure body, the connection strength of the tapered protrusion and the ceramic structure body is improved, and the connection strength of the wear-resistant layer and the ceramic structure body is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a ceramic ball valve valve core wear-resistant coating structure three-dimensional structure schematic view;

[0016] Figure 2 The utility model provides a ceramic ball valve valve core wear-resistant coating structure wear-resistant layer internal structure schematic view;

[0017] Figure 3 The utility model provides a ceramic ball valve valve core wear-resistant coating structure ceramic structure body three-dimensional structure schematic view;

[0018] Figure 4 The utility model provides a ceramic ball valve valve core wear-resistant coating structure valve core cross section structure schematic view.

[0019] LEGEND:

[0020] 1, valve body;2, valve handle;3, valve rod;4, through hole;5, valve core;6, base;7, connecting seat;8, wear-resistant layer;9, tapered protrusion;10, tapered hole;11, ceramic structure body. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings of the specification of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Refer toFigure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a wear-resistant coating structure for a ceramic ball valve core, comprising a valve core 5, the valve core 5 comprising a ceramic structural body 11, a tapered hole 10 formed on the outer wall of the ceramic structural body 11, a tapered protrusion 9 provided inside the ceramic structural body 11, the inner wall of the tapered hole 10 and the outer wall of the tapered protrusion 9 being fitted together, one side of the tapered protrusion 9 passing through the outer wall of the ceramic structural body 11, a wear-resistant layer 8 fixedly connected to the side of the tapered protrusion 9 away from the ceramic structural body 11, the inner wall of the wear-resistant layer 8 being fitted together with the outer wall of the ceramic structural body 11, and a through hole 4 formed on the ceramic structural body 11, the through hole 4 passing through the ceramic structural body 11 and the wear-resistant layer 8.

[0023] In this embodiment, Figure 1 The orientation is defined by front, back, left, and right. The ceramic structure body 11 is made of structural ceramic materials, such as alumina, zirconium oxide, and silicon carbide, and related valve components are existing technologies. Specifically, through holes 4 are opened on the ceramic structure body 11, and several conical holes 10 are opened on the outer wall of the ceramic structure body 11. Through construction, a coating is applied to the outer wall of the ceramic structure body 11, so that the conical protrusions 9 inside the conical holes 10 are formed and completely fit with the inner wall of the conical holes 10. Construction continues to form a wear-resistant layer 8 of a certain thickness on the outer wall of the ceramic structure body 11, thereby fixing the wear-resistant layer 8 and the conical protrusions 9 together. The outer wall of the ceramic structure body 11 and the inner wall of the wear-resistant layer 8 are fitted and connected together. Further construction is carried out on the wear-resistant layer 8 to form it, thereby completing the wear-resistant coating structure of the valve core 5, thereby improving the situation where single-coated ceramic ball valves are prone to wear, peeling, or corrosion penetration under extreme working conditions.

[0024] Reference Figure 1 Both sides of the valve core 5 are provided with bases 6, and through holes 4 pass through the bases 6.

[0025] Specifically, when using this ball valve, the rotation of the valve core 5 causes the through hole 4 to pass through the base 6, thereby opening the ball valve and allowing the liquid inside the valve to flow. When it is necessary to close the ball valve, the rotation of the valve core 5 causes the base 6 and the through hole 4 to be misaligned. At this time, the liquid inside the valve is blocked by the outer wall of the valve core 5 and cannot continue to flow, thus realizing the function of opening and closing the ball valve.

[0026] Reference Figure 1 A connecting seat 7 is provided on the side of the base 6 away from the valve core 5. The connecting seat 7 is used to connect the pipeline.

[0027] Specifically, the connecting seat 7 is used for connecting with external pipelines, when the ball valve is used, the liquid in the pipelines flows into the connecting seat 7, and the pipeline flow is realized through the action of the valve core 5 and the base 6.

[0028] With reference to Figure 1 , the valve body 1 is arranged between the two connecting seats 7, and the valve core 5 and the base 6 are arranged in the valve body 1.

[0029] Specifically, the valve body 1 provides the base 6 and the valve core 5 with a working space and sealing, which is a prior art; when the valve core 5 rotates, the outer wall of the valve core 5 rubs against the side wall of the base 6 and extrudes the base 6, the valve body 1 provides support for the base 6, and the sealing between the liquid in the valve and the base 6 is improved, and the two bases 6 are designed to realize the function of bidirectional switching of the ball valve.

[0030] With reference to Figure 1 , the valve stem 3 is arranged on the upper side of the valve core 5, the valve stem 3 penetrates through the upper side of the valve body 1, and the valve stem 3 is rotationally connected with the upper side of the valve body 1.

[0031] Specifically, the valve stem 3 and the valve body 1 have sealing, so that when the valve stem 3 rotates, the liquid in the valve body 1 will not flow out through the gap between the valve body 1 and the valve stem 3, which is a prior art; when the ball valve is used, the valve stem 3 is rotated to drive the valve core 5 to rotate, so that the through hole 4 and the base 6 are in communication or misalignment, thereby realizing the opening and closing of the ball valve.

[0032] With reference to Figure 1 , the valve handle 2 is connected to the outer wall of the valve stem 3.

[0033] Specifically, the valve handle 2 is pulled to drive the valve stem 3 to rotate, thereby driving the valve core 5 to rotate, which realizes the opening and closing of the ball valve, reduces the difficulty of rotating the valve stem 3, and improves the convenience of using the ball valve.

[0034] With reference to Figure 4 , the circumference of the tapered hole 10 on the outer wall of the ceramic structure body 11 is smaller than the circumference inside the ceramic structure body 11.

[0035] Specifically, the tapered hole 10 on the outer wall of the ceramic structure body 11 is tapered from narrow to wide, the tapered protrusion 9 is formed in the tapered hole 10 through construction, and the outer wall of the tapered protrusion 9 is attached to the inner wall of the tapered hole 10, which increases the connection strength of the tapered protrusion 9 and the ceramic structure body 11, and through the fixed connection of the tapered protrusion 9 and the wear-resistant layer 8, the connection strength of the wear-resistant layer 8 and the ceramic structure body 11 is further increased, thereby realizing the addition of the wear-resistant coating of the valve core 5.

[0036] Working principle: specifically, first, by opening a number of tapered holes 10 on the outer wall of the ceramic structure body 11; through the construction, the outer wall of the ceramic structure body 11 is coated to cover, so that the tapered protrusions 9 inside the tapered hole 10 is shaped, and the inner wall of the tapered hole 10 is completely attached, continue to construction, on the outer wall of the ceramic structure body 11 form a certain thickness of wear-resistant layer 8, so that the wear-resistant layer 8 and the tapered protrusions 9 are fixedly connected together, the outer wall of the ceramic structure body 11 and the inner wall of the wear-resistant layer 8 are attached and connected together, then the wear-resistant layer 8 is constructed, so that the wear-resistant layer 8 is shaped, and through the setting of the through hole 4, the wear-resistant coating structure of the valve core 5 is completed.

[0037] When using the ball valve, the connecting seat 7 and the external pipeline are connected, the valve body 1 provides the base 6 and the valve core 5 with working space and sealing, and the valve stem 3 and the valve body 1 have sealing property, by pulling the valve handle 2, the valve stem 3 is driven to rotate, thereby driving the valve core 5 to rotate, so that the through hole 4 and the base 6 are in communication or misalignment state, thereby realizing the function of the ball valve switch, thereby improving the single coating ceramic ball valve in the extreme working condition. The wear, peeling or corrosion penetration condition is improved.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it can still be modified, or part of the technical features of the equivalent replacement, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. Ceramic ball valve trim wear coating structure, comprising a valve trim (5), characterized in that: The valve core (5) comprises a ceramic structure body (11), a tapered hole (10) is formed in the outer wall of the ceramic structure body (11), a tapered protrusion (9) is arranged in the interior of the ceramic structure body (11), the inner wall of the tapered hole (10) and the outer wall of the tapered protrusion (9) are attached, one side of the tapered protrusion (9) penetrates the outer wall of the ceramic structure body (11), a wear-resistant layer (8) is fixedly connected to the side of the ceramic structure body (11) away from the tapered protrusion (9), the inner wall of the wear-resistant layer (8) and the outer wall of the ceramic structure body (11) are attached, a through hole (4) is formed in the ceramic structure body (11), and the through hole (4) penetrates the ceramic structure body (11) and the wear-resistant layer (8).

2. The ceramic ball valve trim wear resistant coating structure of claim 1, wherein: Both sides of the valve core (5) are provided with bases (6), and the through hole (4) penetrates the base (6).

3. The ceramic ball valve trim wear resistant coating structure of claim 2, wherein: The side of the base (6) away from the valve core (5) is provided with a connecting seat (7), and the connecting seat (7) is used for connecting pipelines.

4. The ceramic ball valve trim wear resistant coating structure of claim 3, wherein: Valve bodies (1) are arranged between the two connecting seats (7), and the valve core (5) and the base (6) are arranged in the interior of the valve body (1).

5. The ceramic ball valve trim wear resistant coating structure of claim 1, wherein: A valve rod (3) is arranged on the upper side of the valve core (5), the valve rod (3) penetrates the upper side of the valve body (1), and the valve rod (3) and the upper side of the valve body (1) are rotationally connected.

6. The ceramic ball valve trim wear resistant coating structure of claim 5, wherein: A valve handle (2) is connected to the outer wall of the valve rod (3).

7. The ceramic ball valve trim wear resistant coating structure of claim 1, wherein: The circumference of the tapered hole (10) on the outer wall of the ceramic structure body (11) is smaller than the circumference of the tapered hole (10) in the interior of the ceramic structure body (11).

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