Grinding device for sealing surface in valve

Abstract

The utility model discloses a valve internal sealing surface grinding device which comprises a grinding device body, the grinding device body is installed on a valve body, the valve body is fixedly provided with a sealing surface and a valve body connecting flange, meanwhile, the surface of the sealing surface is covered with a grinding wheel, the grinding device body comprises the grinding wheel, and a stud is inserted in the grinding wheel in a penetrating mode. And meanwhile, a connecting rod is fixedly installed at the top of the stud, the top of the connecting rod penetrates through a through hole formed in the middle of the fixing plate and is fixedly connected with the driving cylinder, a stabilizing assembly is installed on the outer side of the connecting rod, and multiple sets of fixing bolts are evenly installed on the surface of the valve body connecting flange. According to the grinding device for the sealing surface in the valve, the hand drill is held by hand, the inner hexagonal screwdriver head on the hand drill is inserted into the driving cylinder, the driving cylinder drives the grinding wheel to rotate through the connecting rod to grind the sealing surface, the grinding precision is improved, and the grinding device has the advantages of being high in grinding efficiency and good in grinding effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body processing and polishing equipment field, concretely to a valve internal sealing surface grinding device. BACKGROUND

[0002] The internal sealing surface of the valve body refers to the contact surface inside the valve structure for preventing medium (such as liquid, gas, etc.) leakage; it is the key part of the valve to realize sealing function, usually the surface of the two matched components in close contact; in different types of valves, the position of the sealing surface is different; for example, in the gate valve, the sealing surface is located on both sides of the gate plate and the valve body passage, when the gate plate is lowered to close the valve, the two sides of the gate plate are in close contact with the internal sealing surface of the valve body, thereby cutting off the circulation of the medium; in the stop valve, the sealing surface is the contact surface between the valve disc and the valve seat, which is in close contact with the valve seat when the valve disc is closed to prevent leakage of medium from between the valve disc and the valve seat;

[0003] The internal sealing surface of the valve body is mainly ground by the grinding wheel for the following reasons: during casting or processing of the valve body, some microscopic defects may occur on the sealing surface, such as small pores, sand holes, knife marks, etc.; these defects will damage the flatness and continuity of the sealing surface; through grinding, these defects can be effectively removed;

[0004] The internal sealing surface of the valve body is ground by hand before grinding, with low horizontal accuracy; during manual grinding, the grinding force and grinding track of different operators are inconsistent, which may cause uneven roughness of the sealing surface, affecting the sealing performance and subsequent assembly accuracy. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a valve internal sealing surface grinding device to solve the defects mentioned in the background.

[0006] To achieve the above-mentioned purpose, a valve internal sealing surface grinding device is provided, which comprises a grinding device body, the grinding device body is installed on the valve body, and the valve body is fixedly provided with a sealing surface and a valve body connecting flange, and the surface of the sealing surface is covered with a grinding wheel; the grinding device body comprises a grinding wheel, and a stud is inserted through the grinding wheel; the top of the stud is fixedly installed with a connecting rod, and the top of the connecting rod passes through a through hole formed in the middle of a fixed plate and is fixedly connected with a driving cylinder; a stabilizing assembly is installed on the outer side of the connecting rod; a plurality of fixed bolts are uniformly installed on the surface of the valve body connecting flange.

[0007] Preferably, the fixed plate is a rectangular structure made of metal material, and through holes are formed on both sides of the fixed plate, and fixed bolts are inserted through the through holes on both sides of the fixed plate; nuts are screwed onto the fixed bolts.

[0008] Preferably, the upper and lower surfaces of the grinding wheel are covered with clamping pieces, and the clamping pieces are circularly arranged, and the studs are inserted into the middle part of the grinding wheel and are fixedly connected through two groups of nuts and clamping pieces.

[0009] Preferably, the fixing plate and the connecting rod are connected through a stabilizing assembly, and the stabilizing assembly comprises a supporting seat, an upper guide seat, a lower guide seat and a connecting column.

[0010] Preferably, the upper guide seat and the lower guide seat are annularly arranged, and bearings are mounted on the circumferential inner walls of the upper guide seat and the lower guide seat, and the upper guide seat and the lower guide seat are sleeved on the outer side of the connecting rod and are movably connected through the bearings.

[0011] Preferably, the upper guide seat and the lower guide seat are fixedly connected through three groups of connecting columns, and the circumferential outer walls of the upper guide seat are screw-connected with the supporting seats.

[0012] Preferably, the supporting seat is an arc-shaped structure made of metal material, and the top of the supporting seat is provided with a mounting seat, and the mounting seat covers the bottom of the fixing plate and is fixed through bolts.

[0013] Compared with the prior art, the fixing plate covers the surface of the valve body connecting flange, the fixing bolts are inserted into the through holes on both sides of the fixing plate, the fixing plate is stably installed on the surface of the valve body connecting flange, the grinding wheel will not be loose when polishing the surface of the sealing surface, and the stability of the grinding wheel during work is ensured; the hand drill is held, the internal hex head of the hand drill is inserted into the inside of the driving cylinder, the driving cylinder drives the grinding wheel to rotate through the connecting rod to polish the sealing surface, the polishing precision is improved, and the polishing efficiency is high and good; the sealing performance of the valve and the subsequent assembly precision are not affected. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the structure of the utility model;

[0015] Figure 2 It is a bottom view of the utility model; Figure 1

[0016] Figure 3 It is a top view of the utility model; Figure 1

[0017] Figure 4 It is a sectional view of the utility model; Figure 1

[0018] Figure 5 It is a bottom view of the utility model. Figure 4

[0019] ​​​​The figure label: 1, valve body; 11, sealing surface; 12, valve body connecting flange; 13, fixing bolt; 2, grinding device body; 21, fixed plate; 22, drive cylinder; 23, connecting rod; 24, nut; 25, clamping piece; 26, stud; 27, grinding wheel; 28, stabilizing assembly; 281, support seat; 282, upper guide seat; 283, lower guide seat; 284, connecting column. DETAILED DESCRIPTION

[0020] Please refer to Figures 1-5 The utility model provides a kind of valve internal sealing surface grinding device, including grinding device body 2, grinding device body 2 is installed on valve body 1, and valve body 1 is fixedly provided with sealing surface 11, valve body connecting flange 12, while the surface of sealing surface 11 is covered with grinding wheel 27, grinding device body 2 includes grinding wheel 27, and stud 26 is inserted on grinding wheel 27, while the top of stud 26 is fixedly installed with connecting rod 23, and the top of connecting rod 23 passes through the through hole in the middle of fixed plate 21 and is fixedly connected with drive cylinder 22, stabilizing assembly 28 is installed on the outside of connecting rod 23, and valve body connecting flange 12 is uniformly provided with multiple groups of fixing bolts 13.

[0021] Working principle: operator when actual use, grinding wheel 27 is fixedly installed at the bottom of connecting rod 23 by nut 24, clamping piece 25, stud 26 at this time, grinding wheel 27 is set in the inside of valve body 1 by passing through valve body connecting flange 12, and covers the surface of sealing surface 11, need to pay attention to, the diameter of grinding wheel 27 is less than the inner diameter of valve body connecting flange 12;Fixed plate 21 is covered on the surface of valve body connecting flange 12, and fixed bolt 13 is inserted in the through hole on both sides of fixed plate 21, and nut is screwed on fixed bolt 13, to complete the stable installation of fixed plate 21 on the surface of valve body connecting flange 12, so that grinding wheel 27 does not loosen when polishing the surface of sealing surface 11, guarantee the stability of grinding wheel 27 when working;Drive groove is formed in the inside of drive cylinder 22, hand drill is held, and internal hex head on hand drill is inserted in the inside of drive cylinder 22, and drive cylinder 22 drives grinding wheel 27 to rotate to polish sealing surface 11 by connecting rod 23, improves polishing precision, with the advantages of high polishing efficiency and good effect;

[0022] In order to further avoid the inclination of the grinding wheel 27 during the rotation grinding, the outer side of the connecting rod 23 is provided with the upper guide seat 282 and the lower guide seat 283 through two groups of bearings. The upper guide seat 282 and the lower guide seat 283 are fixedly connected through three groups of connecting columns 284. The two sides of the upper guide seat 282 are screw-fixed on the bottom of the fixed plate 21 through two groups of support seats 281. The high-speed rotating grinding wheel 27 can be limited and guided to avoid the inclination of the grinding wheel 27 during the rotation. The working speed is much faster than manual grinding. The equipment can work continuously and is not limited by fatigue and other human factors.

[0023] The fixed plate 21 is a rectangular structure made of metal material. The two sides of the fixed plate 21 are provided with through holes. The fixed bolts 13 are inserted into the through holes. The nuts are screw-connected on the fixed bolts 13.

[0024] As a preferred embodiment, the upper and lower surfaces of the grinding wheel 27 are covered with the clamping pieces 25. The clamping pieces 25 are circularly arranged. The studs 26 are inserted into the middle of the grinding wheel 27 and are fixedly connected through the two groups of nuts 24 and the clamping pieces 25.

[0025] The fixed plate 21 and the connecting rod 23 are connected through the stabilizing assembly 28. The stabilizing assembly 28 includes the support seat 281, the upper guide seat 282, the lower guide seat 283 and the connecting column 284.

[0026] As a preferred embodiment, the upper guide seat 282 and the lower guide seat 283 are annularly arranged. The bearings are installed on the inner walls of the circumferences of the upper guide seat 282 and the lower guide seat 283. The upper guide seat 282 and the lower guide seat 283 are sleeved on the outer side of the connecting rod 23 and are movably connected through the bearings.

[0027] As a preferred embodiment, the upper guide seat 282 and the lower guide seat 283 are fixedly connected through the three groups of connecting columns 284. The support seats 281 are screw-connected on the two sides of the outer wall of the circumference of the upper guide seat 282.

[0028] The support seat 281 is an arc-shaped structure made of metal material. The mounting seat is arranged on the top of the support seat 281. The mounting seat covers the bottom of the fixed plate 21 and is fixed through the bolts.

Claims

1. A valve internal sealing surface grinding device comprising a grinding device body (2), characterized in that: The grinding device body (2) is installed on the valve body (1), and the valve body (1) is fixedly provided with a sealing surface (11) and a valve body connecting flange (12), and the surface of the sealing surface (11) is covered with a grinding wheel (27), the grinding device body (2) comprises the grinding wheel (27), and the grinding wheel (27) is penetrated by a stud (26), the top of the stud (26) is fixedly installed with a connecting rod (23), the top of the connecting rod (23) penetrates a through hole in the middle of the fixed plate (21) and is fixedly connected with the driving cylinder (22), the outer side of the connecting rod (23) is installed with a stabilizing assembly (28), and the surface of the valve body connecting flange (12) is uniformly installed with a plurality of fixed bolts (13).

2. A valve interior sealing surface grinding device according to claim 1, characterized in that: The fixed plate (21) is a rectangular structure made of metal material, and the both sides of the fixed plate (21) are provided with through holes, and the through holes on both sides of the fixed plate (21) are penetrated by fixed bolts (13), and the fixed bolts (13) are screwed with nuts.

3. The valve interior sealing surface polishing apparatus according to claim 1, characterized by: The upper and lower surfaces of the grinding wheel (27) are covered with clamping pieces (25), and the clamping pieces (25) are circularly arranged, and the stud (26) penetrates the middle of the grinding wheel (27) and is fixedly connected by two groups of nuts (24) and clamping pieces (25).

4. The valve interior sealing surface polishing apparatus according to claim 1, characterized by: The fixed plate (21) and the connecting rod (23) are connected by the stabilizing assembly (28), and the stabilizing assembly (28) comprises a supporting seat (281), an upper guide seat (282), a lower guide seat (283) and a connecting column (284).

5. A valve interior sealing surface grinding apparatus according to claim 4, wherein: The upper guide seat (282) and the lower guide seat (283) are annularly arranged, and the circumferential inner walls of the upper guide seat (282) and the lower guide seat (283) are provided with bearings, and the upper guide seat (282) and the lower guide seat (283) are sleeved on the outer side of the connecting rod (23) and are movably connected by the bearings.

6. A valve interior sealing surface grinding apparatus according to claim 5, wherein: The upper guide seat (282) and the lower guide seat (283) are fixedly connected by three groups of connecting columns (284), and the circumferential outer walls of the upper guide seat (282) are screwedly installed with supporting seats (281).

7. A valve interior sealing surface grinding apparatus according to claim 6, wherein: The supporting seat (281) is an arc-shaped structure made of metal material, and the top of the supporting seat (281) is provided with a mounting seat, and the mounting seat covers the bottom of the fixed plate (21) and is fixed by bolts.

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