CN204852421U - Pottery tapered plug valve - Google Patents

Abstract

The utility model relates to a ceramic cone plug valve, which comprises a valve body. A liquid passage is arranged in the middle of the valve body, and a ceramic tube with a diameter is arranged on the inner wall of the liquid passage. The top of the valve body is provided with a There is a tapered hole through which the bore ceramic tube passes through. A tapered ceramic plug is provided in the tapered hole. A flow hole is arranged on the side wall of the tapered ceramic plug. The top of the tapered hole is fixed to the bonnet by the bonnet bolt. The middle part of the top surface of the cover is interspersed with a valve stem fixedly connected with a conical ceramic plug. The outer wall of the valve stem is covered with a hollow bolt connected to the valve cover through threads, and the outer wall of the valve stem below the bottom of the hollow bolt is covered with a spring. The bottom end of the spring leans against the top end surface of the conical ceramic plug, and the top end of the spring leans against the bottom end surface of the hollow bolt. The ceramic cone plug valve of the utility model has a simple structure, the valve core adopts a cone-shaped ceramic plug, and the inside of the valve body is provided with a ceramic tube with a diameter. The service life is 2-5 times longer than that of ordinary valves, and it is light in weight and easy to install.

Description

Ceramic cone valve

technical field

The utility model relates to a ceramic cone plug valve.

Background technique

At present, there are various forms of ball valves on the market, and their performances are different. However, the existing ball valves in use have complex structures and poor sealing performance. Moreover, when the ball valve is used for a long time, the valve core is prone to wear and tear, and the ball valve is prone to leakage. short.

Utility model content

In order to solve the above technical problems, the utility model provides a ceramic cone plug valve.

The ceramic cone plug valve of the present utility model includes a valve body, the middle part of the valve body is provided with a liquid channel through which the left and right sides are connected, the inner wall of the liquid channel is provided with a ceramic tube with a diameter, and the top of the valve body is provided with a There is a tapered hole through which the bore ceramic tube passes through. A tapered ceramic plug is provided in the tapered hole. A flow hole is arranged on the side wall of the tapered ceramic plug. The top of the tapered hole is fixed to the bonnet by the bonnet bolt. The middle part of the top surface of the cover is interspersed with the valve stem fixedly connected with the conical ceramic plug, the top of the valve stem is connected with the handle, the outer wall of the valve stem is set with a hollow bolt connected to the valve cover through threads, and the valve stem below the bottom of the hollow bolt A spring is sheathed on the outer wall, the bottom end of the spring abuts against the top end surface of the conical ceramic plug, and the top end of the spring abuts against the bottom end surface of the hollow bolt.

In the ceramic cone plug valve of the present utility model, a metal hoop is sheathed on the top outer wall of the cone-shaped ceramic plug.

In the ceramic cone plug valve of the utility model, a square groove is arranged in the middle part of the top surface of the conical ceramic plug, and a square head fixed in the square groove is arranged at the bottom end of the valve stem.

In the ceramic cone plug valve of the utility model, an asbestos pad is placed under the bottom end surface of the valve cover.

In the ceramic cone plug valve of the utility model, the contact between the hollow bolt and the valve stem is sealed by a sealing ring.

Compared with the prior art, the beneficial effects of the utility model are: the ceramic cone plug valve of the utility model has a simple structure, the valve core adopts a cone-shaped ceramic plug, and the inside of the valve body is provided with a ceramic tube with a diameter, and the service life is longer than that of ordinary valves by 2 -5 times, and light in weight, easy to install, in addition, there are hollow bolts and springs inside the valve body that can adjust the conical ceramic plug to keep the conical ceramic plug and the bore ceramic tube in a sealed state, the accessories can be replaced in time, and the operation is simple, Thereby saving costs.

Description of drawings

Fig. 1 is a schematic structural view of the ceramic taper plug valve described in the embodiment of the present invention.

In the picture:

1. Valve body; 2. Liquid channel; 3. Diameter ceramic tube; 4. Tapered hole; 5. Tapered ceramic plug; 6. Flow hole; 7. Bonnet bolt; 8. Bonnet; 9. Valve Rod; 10, handle; 11, hollow bolt; 12, spring; 13, metal hoop; 14, square head; 15, asbestos pad; 16, sealing ring.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

As shown in Figure 1, a ceramic cone plug valve includes a valve body 1, a liquid channel 2 through which the left and right sides are arranged in the middle of the valve body 1, and a ceramic tube 3 with a diameter is provided on the inner wall of the liquid channel 2, and the valve body The top of 1 is provided with a tapered hole 4 that extends downward and communicates with the through-diameter ceramic tube 3, and a tapered ceramic plug 5 is provided in the tapered hole 4, and a flow hole is horizontally provided on the side wall of the tapered ceramic plug 5 6. The top of the tapered hole 4 fixes the bonnet 8 through the bonnet bolt 7, and the middle part of the top surface of the bonnet 8 is interspersed with the valve stem 9 fixedly connected with the conical ceramic plug 5, and the top of the valve stem 9 is connected to the handle 10. The outer wall of the rod 9 is provided with a hollow bolt 11 connected to the valve cover 8 through threads, and the outer wall of the valve stem 9 below the bottom of the hollow bolt 11 is provided with a spring 12, and the bottom end of the spring 12 is against the conical ceramic plug 5 On the top end face of the spring 12, the top end of the spring 12 abuts against the bottom end face of the hollow bolt 11.

In the ceramic cone plug valve of the present utility model, the top outer wall of the conical ceramic plug 5 is provided with a metal hoop 13, and the metal hoop 13 is used to ensure that the conical ceramic plug 5 will not be damaged when the valve stem 9 rotates. Squeeze and crack, also in order to prolong the service life of conical ceramic plug 5.

In the ceramic cone plug valve of the present utility model, a square groove is provided in the middle of the top surface of the conical ceramic plug 5, and a square head 14 fixed in the square groove is provided at the bottom of the valve stem 9.

In the ceramic cone plug valve of the present utility model, an asbestos pad 15 is placed under the bottom surface of the valve cover 8 .

In the ceramic cone plug valve of the present utility model, the contact between the hollow bolt 11 and the valve stem 9 is sealed by a sealing ring 16 .

When the ceramic cone plug valve of the utility model is actually used, since the conical ceramic plug and the diameter ceramic tube are ceramic components, they will be worn after long-term use, and the two parts will appear to be not tightly sealed when worn. , so the valve installs a spring on the top of the conical ceramic plug, and an adjustable hollow bolt on the upper part of the spring. The hollow bolt and the valve cover are connected by threads. When it is not tight, adjust the hollow bolt downward, and the spring is used to squeeze the conical ceramic plug all the way down, so that the conical ceramic plug and the ceramic tube with a diameter are kept in a sealed state. The diameter of the flow hole of the ceramic plug is the same. When the three diameters are consistent, the valve is open, and when the diameter of the conical ceramic plug is not consistent with the diameter of the ceramic tube, the valve is closed. Therefore, the valve has no installation direction on the pipeline. The material of valve body and bonnet can be cast iron, ductile iron, cast steel or stainless steel, and the connection form is threaded flange connection. Applicable nominal pressure is 0.25MPa-40MPa. This valve is especially suitable for high temperature and high pressure working conditions, resistant to strong acid and alkali, dust or medium with small particles. The valve is light in weight and easy to install. The super-thick ceramic parts can increase the service life of the valve by 2-5 times compared with ordinary valves, and the ceramic parts of this valve can be replaced after damage, which is easy to operate and saves costs.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and modifications can also be made. And modification should also be regarded as the protection scope of the present utility model.

Claims (5)

1. A ceramic cone plug valve, comprising a valve body (1), is characterized in that: the middle part of the valve body (1) is provided with a liquid passage (2) through which the left and right sides are connected, and the inner wall of the liquid passage (2) is provided with The diameter ceramic pipe (3), the top of the valve body (1) is provided with a tapered hole (4) extending downward and connecting with the diameter ceramic pipe (3), and the tapered hole (4) is provided with a tapered ceramic The plug (5), the side wall of the conical ceramic plug (5) is provided with a flow hole (6) horizontally, and the top of the conical hole (4) fixes the bonnet (8) by the bonnet bolt (7), and the bonnet The middle part of the top end surface of (8) is interspersed with the valve stem (9) fixedly connected with the conical ceramic plug (5), the top of the valve stem (9) is connected to the handle (10), and the outer wall of the valve stem (9) is sleeved with The hollow bolt (11) connected with the bonnet (8) by threads, the outer wall of the valve stem (9) below the bottom of the hollow bolt (11) is covered with a spring (12), and the bottom end of the spring (12) is against the cone. On the top end surface of the shaped ceramic plug (5), the top end of the spring (12) leans against the bottom end surface of the hollow bolt (11). 2. The ceramic cone plug valve according to claim 1, characterized in that: a metal ferrule (13) is sheathed on the top outer wall of the conical ceramic plug (5). 3. The ceramic cone plug valve according to claim 1, characterized in that: the middle part of the top end surface of the conical ceramic plug (5) is provided with a square groove, and the bottom end of the valve stem (9) is provided with a square groove fixed on it. inside the square head (14). 4. The ceramic taper plug valve according to claim 1, characterized in that: an asbestos pad (15) is placed under the bottom end surface of the valve cover (8). 5. The ceramic taper plug valve according to claim 1, characterized in that: the contact between the hollow bolt (11) and the valve stem (9) is sealed by a sealing ring (16).