阅读说明：本技术 陶瓷球阀研磨设备及研磨方法 (Ceramic ball valve grinding equipment and grinding method ) 是由 罗新海 王高翔 王文利 彭朝阳 于 2019-10-24 设计创作，主要内容包括：本发明公开一种陶瓷球阀研磨设备,适用于对陶瓷球阀的第一阀座、第二阀座及阀球相互研磨,所述阀球可转动地夹持于所述第一阀座及第二阀座之间,其包括第一驱动装置、第二驱动装置及第三驱动装置；所述第一驱动装置的输出轴与所述第一阀座连接并驱动所述第一阀座围绕X向中心轴转动；所述第二驱动装置的输出轴与所述第二阀座连接并驱动所述第二阀座围绕X向中心轴转动；所述第三驱动装置的输出轴与所述阀球连接并驱动所述阀球围绕Y向中心轴转动；所述X向中心轴与所述Y向中心轴水平相交。本发明陶瓷球阀研磨设备对陶瓷球阀研磨精密,可提高球面贴合度及圆度,提高球阀密封性能。另,本发明还公开一种陶瓷球阀研磨方法。(The invention discloses a ceramic ball valve grinding device which is suitable for grinding a first valve seat, a second valve seat and a valve ball of a ceramic ball valve, wherein the valve ball is rotatably clamped between the first valve seat and the second valve seat and comprises a first driving device, a second driving device and a third driving device; an output shaft of the first driving device is connected with the first valve seat and drives the first valve seat to rotate around the X-direction central shaft; an output shaft of the second driving device is connected with the second valve seat and drives the second valve seat to rotate around the X-direction central shaft; an output shaft of the third driving device is connected with the valve ball and drives the valve ball to rotate around the Y-direction central shaft; the X-direction central axis and the Y-direction central axis are horizontally intersected. The ceramic ball valve grinding equipment provided by the invention is precise in grinding of the ceramic ball valve, can improve the fitting degree and roundness of the spherical surface, and improves the sealing performance of the ball valve. In addition, the invention also discloses a grinding method of the ceramic ball valve.)

1. The utility model provides a pottery ball valve grinding device, is applicable to first disk seat, second disk seat and the valve ball to ceramic ball valve and grinds each other, the valve ball rotationally the centre gripping in between first disk seat and the second disk seat, its characterized in that: comprises a first driving device, a second driving device and a third driving device; an output shaft of the first driving device is connected with the first valve seat and drives the first valve seat to rotate around the X-direction central shaft; an output shaft of the second driving device is connected with the second valve seat and drives the second valve seat to rotate around the X-direction central shaft; an output shaft of the third driving device is connected with the valve ball and drives the valve ball to rotate around the Y-direction central shaft; the X-direction central axis and the Y-direction central axis are horizontally intersected.

2. A ceramic ball valve grinding apparatus as defined in claim 1 wherein: the ceramic ball valve grinding equipment further comprises a first tool, a second tool and a third tool, and the first tool is detachably connected between the output end of the first driving device and the first valve seat; the second tool is detachably connected between the output end of the second driving device and the second valve seat; the third tool is detachably connected between the output end of the third driving device and the valve ball.

3. A ceramic ball valve grinding apparatus as defined in claim 1 wherein: the ceramic ball valve grinding equipment further comprises a swinging shaft, and the swinging shaft is connected to the valve ball to enable the valve ball to rotate around a Z-direction central shaft; the Z-direction central axis is perpendicular to a plane where the X-direction central axis and the Y-direction central axis are located.

4. A ceramic ball valve grinding apparatus as defined in claim 3 wherein: the ceramic ball valve grinding equipment further comprises a fourth driving device, and the fourth driving device drives the valve ball to rotate around the Z-direction central shaft.

5. A ceramic ball valve grinding apparatus as claimed in claim 3 or 4 wherein: the valve ball rotates around the Z-direction central shaft within an angle range of-90 degrees to +90 degrees.

6. A grinding method of a ceramic ball valve is characterized by comprising the following steps:

the method comprises the steps of arranging a first valve seat in a rotatable mode around an X-direction central shaft, arranging a second valve seat in a rotatable mode around the X-direction central shaft, clamping a valve ball between the first valve seat and the second valve seat in a contact mode, arranging the valve ball in a rotatable mode around a Y-direction central shaft, and enabling the X-direction central shaft to horizontally intersect with the Y-direction central shaft;

adding abrasive paste between the first valve seat and the valve ball and between the second valve seat and the valve ball;

the first valve seat is driven to rotate around an X-direction central shaft, the second valve seat is driven to rotate around the X-direction central shaft, and the valve ball is driven to rotate around a Y-direction central shaft, so that the valve ball is in butt joint with the first valve seat and the second valve seat respectively.

7. A ceramic ball valve grinding method as defined in claim 6 wherein: the direction of rotation of the first valve seat is opposite to the direction of rotation of the second valve seat.

8. A ceramic ball valve grinding method as defined in claim 6 wherein: the method also includes the step of rotatably positioning the valve ball about the Z-axis center axis prior to the mating step.

9. A ceramic ball valve grinding method as defined in claim 8 wherein: the step of driving the valve ball to swing back and forth along the Z-direction central shaft is further included before or during the split grinding.

10. A ceramic ball valve grinding method as defined in claim 6 wherein: the grinding paste is carborundum grinding paste with at least one specification of W1-W10.

Technical Field

The invention relates to grinding equipment, in particular to ceramic ball valve grinding equipment and a grinding method.

Background

The valve is an important component in a petrochemical device pipeline system, is various and large in quantity, is one of main leakage sources in the device, and is very important for the sealing performance requirement of the valve. Valve seal performance refers to the ability of the valve seals to prevent leakage of media. The main sealing part of the ball valve is an opening and closing part, namely an inosculating surface between a valve ball and a valve seat. It directly affects the ability of the valve to intercept the media and the normal operation of the device. It directly affects the safety production, and the leakage can result in working medium loss, enterprise economic loss and environmental pollution, and can cause production accidents in severe cases.

In the prior art, valve seats and circular arc spherical surfaces of valve balls in ball valve products are ground by grinding wheels and the like, the degree of attachment and roundness between the spherical surface of the ball valve and the circular arc surface of the valve seat have certain errors, and the spherical surfaces cannot be completely attached to each other. Therefore, the sealing performance of the valve is sometimes not completely sealed, and there are leakage conditions such as air leakage and water leakage, which affect the sealing performance of the valve, and the grinding cost is high.

Disclosure of Invention

The invention aims to provide ceramic ball valve grinding equipment which is precise in grinding of a ceramic ball valve, high in degree of spherical surface fitting and roundness and high in ball valve sealing performance.

The invention aims to provide a ceramic ball valve grinding method which is precise in grinding of a ceramic ball valve and capable of effectively improving the degree of spherical surface fitting and roundness of the ceramic ball valve and high in sealing performance.

In order to achieve the above object, the present invention provides a ceramic ball valve grinding apparatus, which is suitable for grinding a first valve seat, a second valve seat and a valve ball of a ceramic ball valve, wherein the valve ball is rotatably clamped between the first valve seat and the second valve seat, and comprises a first driving device, a second driving device and a third driving device; an output shaft of the first driving device is connected with the first valve seat and drives the first valve seat to rotate around the X-direction central shaft; an output shaft of the second driving device is connected with the second valve seat and drives the second valve seat to rotate around the X-direction central shaft; an output shaft of the third driving device is connected with the valve ball and drives the valve ball to rotate around the Y-direction central shaft; the X-direction central axis and the Y-direction central axis are horizontally intersected.

Compared with the prior art, the first valve seat and the second valve seat rotate around the X-direction central shaft and the valve ball rotates around the Y-direction central shaft, so that the valve ball and the two valve seats can be lapped with each other, the spherical surface fitting degree and the spherical surface roundness between the valve ball and the two valve seats are greatly improved by the direct contact lapping mode, the spherical surface fitting degree can reach 99%, the spherical surface roundness reaches within the mum level, the sealing level of the valve ball reaches the state with good precision level, and the sealing property of the valve ball is very high. The problem of in the ball valve the valve ball and the disk seat arc surface because of the circularity is out of round, the mutual arc surface laminating is bad and cause the key index of leakage is solved, the stability of product quality has also been promoted simultaneously to avoid using the emery wheel to grind, reduce cost promotes production efficiency.

Preferably, the ceramic ball valve grinding equipment further comprises a first tool, a second tool and a third tool, wherein the first tool is detachably connected between the output end of the first driving device and the first valve seat; the second tool is detachably connected between the output end of the second driving device and the second valve seat; the third tool is detachably connected between the output end of the third driving device and the valve ball.

Preferably, the ceramic ball valve grinding device further comprises a swinging shaft, wherein the swinging shaft is connected to the valve ball to enable the valve ball to rotate around a Z-direction central shaft; the Z-direction central axis is perpendicular to a plane where the X-direction central axis and the Y-direction central axis are located.

Specifically, the ceramic ball valve grinding equipment further comprises a fourth driving device, and the fourth driving device drives the valve ball to rotate around the Z-direction central shaft.

Specifically, the valve ball rotates around the Z-direction central shaft by an angle ranging from-90 degrees to +90 degrees.

A grinding method of a ceramic ball valve comprises the following steps: the method comprises the steps of arranging a first valve seat in a rotatable mode around an X-direction central shaft, arranging a second valve seat in a rotatable mode around the X-direction central shaft, clamping a valve ball between the first valve seat and the second valve seat in a contact mode, arranging the valve ball in a rotatable mode around a Y-direction central shaft, and enabling the X-direction central shaft to horizontally intersect with the Y-direction central shaft; adding abrasive paste between the first valve seat and the valve ball and between the second valve seat and the valve ball; the first valve seat is driven to rotate around an X-direction central shaft, the second valve seat is driven to rotate around the X-direction central shaft, and the valve ball is driven to rotate around a Y-direction central shaft, so that the valve ball is in butt joint with the first valve seat and the second valve seat respectively.

Preferably, the direction of rotation of the first valve seat is opposite to the direction of rotation of the second valve seat.

Preferably, the step of rotatably positioning the valve ball about the Z-axis is further included prior to mating.

Specifically, the step of driving the valve ball to swing back and forth around the Z-direction central shaft is further included before or during the split grinding.

Preferably, the polishing paste is carborundum polishing paste with at least one specification of W1-W10.

Drawings

Fig. 1 is a structural view of the ceramic ball valve grinding apparatus of the present invention.

FIG. 2 is a flow chart of the ceramic ball valve grinding method of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following detailed description is given with reference to the embodiments and the accompanying drawings.

As shown in fig. 1, the ceramic ball valve grinding apparatus 100 of the present invention is adapted to grind a first valve seat 201, a second valve seat 202 and a valve ball 203 of a ceramic ball valve, wherein the valve ball 203 is rotatably clamped between the first valve seat 201 and the second valve seat 202, and comprises a first driving device 1, a second driving device 2 and a third driving device 3; an output shaft of the first driving device 1 is connected with the first valve seat 201 and drives the first valve seat 201 to rotate around an X-direction central shaft; an output shaft of the second driving device 2 is connected with the second valve seat 202 and drives the second valve seat 202 to rotate around an X-direction central shaft; an output shaft of the third driving device 3 is connected with the valve ball 203 and drives the valve ball 203 to rotate around a Y-direction central shaft; the X-direction central axis and the Y-direction central axis are horizontally intersected.

The ceramic ball valve grinding equipment 100 further comprises a first tool 4, a second tool 5 and a third tool 6, wherein the first tool 4 and the second tool 5 are jigs or clamps connected with the valve seat, and the third tool 6 is a jig or clamp connected with the valve ball 203. The first tool 4 is detachably connected between the output end of the first driving device 1 and the first valve seat 201; the second tooling 5 is detachably connected between the output end of the second driving device 2 and the second valve seat 202; the third tooling 6 is detachably connected between the output end of the third driving device 3 and the valve ball 203. The first drive device 1, the second drive device 2, and the third drive device 3 are motors.

The ceramic ball valve grinding device 100 further comprises a swinging shaft 7 and a fourth driving device (not shown), wherein the swinging shaft 7 is connected to the valve ball 203 to enable the valve ball 203 to rotate around a Z-direction central axis; the Z-direction central axis is perpendicular to a plane where the X-direction central axis and the Y-direction central axis are located. The fourth driving device drives the valve ball 203 to rotate around the Z-direction central axis. The valve ball 203 swings around the Z-direction central axis in an angle ranging from-90 degrees to +90 degrees.

As shown in fig. 2, the grinding method of the ceramic ball valve of the present invention comprises the steps of:

a step S1 of rotatably disposing the first valve seat 201 around an X-direction center axis, rotatably disposing the second valve seat 202 around an X-direction center axis, and sandwiching the valve ball 203 between the first valve seat 201 and the second valve seat 202 in contact with each other, rotatably disposing the valve ball 203 around a Y-direction center axis, and horizontally intersecting the X-direction center axis and the Y-direction center axis; the valve ball 203 is rotatably disposed about a Z-direction center axis.

In step S2, a polishing paste is added between the first valve seat 201 and the valve ball 203 and between the second valve seat 202 and the valve ball 203. The grinding paste is carborundum grinding paste with at least one specification of W1-W10.

In step S3, the first valve seat 201 is driven to rotate around the X-axis, the second valve seat 202 is driven to rotate around the X-axis, and the valve ball 203 is driven to rotate around the Y-axis, so that the valve ball 203 is in contact with the first valve seat 201 and the second valve seat 202, respectively. The direction of rotation of the first valve seat 201 is opposite to the direction of rotation of the second valve seat 202. Of course, the rotation direction of the first valve seat 201 and the rotation direction of the second valve seat 202 may be the same.

In step S4, the valve ball 203 is driven to oscillate back and forth about the Z-axis.

Compared with the prior art, the first valve seat 201 and the second valve seat 202 rotate around the X-direction central axis and the valve ball 203 rotates around the Y-direction central axis, so that the valve ball 203 and the two valve seats can be lapped mutually, the spherical surface fitting degree and the spherical surface roundness between the two valve seats are greatly improved by the direct contact lapping mode, the spherical surface fitting degree can reach 99%, the spherical surface roundness reaches within a micrometer level, the roughness reaches below Ra0.2, the sealing level reaches a state with good precision level, and the sealing performance of the ball valve is very high. In addition, the key indexes of leakage caused by out-of-roundness of the valve ball 203 and the arc surface of the valve seat in the ball valve and poor fit of the arc surfaces are solved, the stability of product quality is improved, grinding by using a grinding wheel is avoided, the cost is reduced, and the production efficiency is improved.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.