Valve grinding apparatus

Abstract

This utility model relates to the technical field of valve grinding tools, specifically a valve grinding device, comprising: a probe rod including a sleeve rod, with an inner rod rotatably sleeved inside the sleeve rod via bearings at both ends; a grinding tool fixedly installed at one end of the inner rod; and a support structure including a clamping disc, with limit grooves arranged in a ring at equal angles on the rear surface of the clamping disc, a limit sliding plate slidably engaging within the limit grooves, a clamp fixedly installed on the rear surface of the limit sliding plate, and a second universal joint rotatably mounted in the center of the clamping disc, the second universal joint slidably engaging with the sleeve rod. In this utility model, during finishing, the clamping disc limits the movement of the probe rod while the second universal joint allows the probe rod to freely adjust its rotation angle within a certain range, facilitating grinding of various parts of the valve shell's inner wall, as well as the arc-shaped inner wall of some spherical valve shells, reducing grinding dead angles and improving grinding effect.

Description

Technical Field

[0001] This utility model relates to the technical field of valve grinding tools, specifically a valve grinding device. Background Technology

[0002] Valves operate under high temperature and high pressure for extended periods, with frequent actuation, which easily causes wear on the valve core and seat. This can lead to internal leakage in the sootblower, causing the steam used by the sootblower to continuously blow directly onto the boiler's heating surface, ultimately resulting in tube rupture and seriously threatening the safe and stable operation of the boiler. To solve the problem of wear on the valve sealing surface, it is necessary to grind it with a grinding tool. In order to avoid strong oscillation of the grinding head during grinding, a positioning structure is fitted onto the side surface of the grinding rod to position the rod and maintain stability.

[0003] However, the existing positioning structure not only positions the rod but also limits its lateral deflection, which prevents the grinding head from adjusting the grinding angle. This affects the finishing effect and also makes it impossible to grind the side walls of some spherical valve bodies. Utility Model Content

[0004] The purpose of this invention is to provide a valve grinding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A valve grinding device, comprising:

[0007] The probe includes a sleeve rod, wherein an inner rod is rotatably sleeved inside the sleeve rod via bearings at both ends;

[0008] The grinding tool is fixedly installed at one end of the inner rod;

[0009] The support structure includes a mounting plate, on the rear surface of which limit grooves are arranged in annular angles. Limit slide plates are slidably engaged in the limit grooves. A clamp is fixedly installed on the rear surface of the limit slide plates. A second universal joint is rotatably installed in the middle of the mounting plate and is slidably engaged with the sleeve rod.

[0010] Furthermore, a motor connecting sleeve is fixedly installed at one end of the sleeve rod, a connecting pin is fixedly installed at one end of the inner rod located in the motor connecting sleeve, and a mold mating end is fixedly installed at the other end of the inner rod.

[0011] Furthermore, the grinding tool includes:

[0012] The mold mating sleeve is engaged with the mold mating end by bolts.

[0013] The connecting rod is fixedly installed at one end of the mold mating sleeve;

[0014] The No. 1 universal joint is rotatably connected to one end of the connecting rod in the middle.

[0015] The mold mounting base is rotatably connected to both ends of the outer side of the No. 1 universal joint.

[0016] Furthermore, the grinding tool further includes:

[0017] The mold base plate is fixedly installed on the rear surface of the mold mounting base by bolts;

[0018] The abrasive is fixedly mounted on the rear surface of the abrasive base plate.

[0019] Furthermore, one end of the limiting slide plate is fixedly connected to the lead screw, the lead screw is slidably sleeved on the side surface of the mounting plate, a bevel gear is screwed onto the side surface of the lead screw, the bevel gear is rotatably installed inside the side surface of the mounting plate, and a bevel gear disc that meshes with the bevel gear is rotatably embedded on the front surface of the mounting plate.

[0020] Furthermore, a limiting plate is fixedly installed on the front surface of the bevel gear disc, a handle is fixedly installed on the front surface of the limiting plate, a locking bolt is screwed onto the limiting plate in the front-back direction, and an anti-slip washer is embedded on the front surface of the clamping disc, with the anti-slip washer and one end of the locking bolt abutting against each other.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. First, pass the sleeve rod through the middle of the No. 2 universal joint. Then, fix the grinding tool to one end of the inner rod. Next, clamp the mounting plate at the opening of the valve housing and insert the grinding tool into the valve housing. Engage the sleeve rod and one end of the inner rod with a power structure such as a handheld electric drill. Use the electric drill to drive the inner rod to rotate, and then rotate the grinding tool to grind and repair the inner wall of the valve housing. During the repair, the mounting plate limits the insertion rod while the No. 2 universal joint gives the insertion rod the ability to freely adjust the rotation angle within a certain range. This facilitates grinding of various parts of the inner wall of the valve housing, as well as the arc-shaped inner wall of some spherical valve housings, reducing grinding dead angles and improving the grinding effect.

[0023] 2. After placing the clamping disc against the valve body opening, rotate the limit disc by the handle to drive the bevel gear disc to rub each bevel gear, thereby synchronously controlling the sliding of each lead screw and synchronously driving each limit slide plate to slide in the limit slide groove. Use the clamp to abut against the edge of the opening to achieve clamping and limiting, and relatively forcefully center the probe rod sleeved at the No. 2 universal joint and provide certain support, which facilitates the grinding work. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the probe rod in this utility model;

[0026] Figure 3 This is a schematic diagram of the grinding tool in this utility model;

[0027] Figure 4 This is a schematic diagram of the support structure in this utility model;

[0028] Figure 5 This is a schematic diagram of the support structure in this utility model.

[0029] In the diagram: 1. Insertion rod; 101. Sleeve rod; 102. Inner rod; 103. Motor connecting sleeve; 104. Grinding wheel mating end; 105. Connecting pin; 2. Grinding wheel; 201. Grinding wheel mating sleeve; 202. Connecting rod; 203. Universal joint No. 1; 204. Grinding wheel mounting base; 205. Grinding wheel base plate; 206. Abrasive; 3. Support structure; 301. Mounting plate; 302. Limiting groove; 303. Limiting slide plate; 304. Clamp; 305. Lead screw; 306. Bevel gear; 307. Bevel gear disc; 308. Limiting disc; 309. Handle; 310. Locking bolt; 311. Anti-slip washer; 312. Universal joint No. 2. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-5 In this embodiment of the present invention, a valve grinding device includes: a probe rod 1, including a sleeve rod 101, with an inner rod 102 rotatably sleeved inside the sleeve rod 101 via bearings at both ends; a grinding tool 2, fixedly installed at one end of the inner rod 102; and a support structure 3, including a clamping plate 301, with limiting grooves 302 arranged in a ring at equal angles on the rear surface of the clamping plate 301, a limiting slide plate 303 slidably clamped inside the limiting grooves 302, a clamp 304 fixedly installed on the rear surface of the limiting slide plate 303, and a second universal joint 312 rotatably installed in the middle of the clamping plate 301, the second universal joint 312 slidably sleeved with the sleeve rod 101.

[0032] Specifically, first, the sleeve rod 101 is passed through the middle of the second universal joint 312. Then, the grinding tool 2 is fixedly connected to one end of the inner rod 102. Next, the clamping plate 301 is clamped at the opening of the valve shell, and the grinding tool 2 is inserted into the valve shell. The sleeve rod 101 and one end of the inner rod 102 are clamped to a power structure such as a handheld electric drill. The electric drill drives the inner rod 102 to rotate, and then the grinding tool 2 is rotated to grind and repair the inner wall of the valve shell. During the repair, the clamping plate 301 clamps and limits the insertion rod 1, while the second universal joint 312 gives the insertion rod 1 the ability to freely adjust the rotation angle within a certain range. This facilitates grinding of various parts of the inner wall of the valve shell, as well as the arc-shaped inner wall of some spherical valve shells, reducing grinding dead angles and improving the grinding effect.

[0033] Example 1

[0034] like Figure 1 As shown, in this embodiment, a motor connecting sleeve 103 is fixedly installed at one end of the sleeve rod 101, a connecting pin 105 is fixedly installed at one end of the inner rod 102 located at the motor connecting sleeve 103, and a grinding wheel docking end 104 is fixedly installed at the other end of the inner rod 102; the grinding wheel 2 includes: a grinding wheel docking sleeve 201, which is bolted to the grinding wheel docking end 104; a connecting rod 202, which is fixedly installed at one end of the grinding wheel docking sleeve 201; a first universal joint 203, which is rotatably connected to one end of the connecting rod 202 in the middle; a grinding wheel mounting base 204, which is rotatably connected to both ends of the first universal joint 203 on the outside; a grinding wheel base 205, which is fixedly installed on the rear surface of the grinding wheel mounting base 204 by bolts; and an abrasive 206, which is fixedly installed on the rear surface of the grinding wheel base 205.

[0035] In this embodiment, the motor connecting sleeve 103 is connected to the handheld electric drill housing by bolts, and the connecting pin 105 is connected to the output end of the electric drill motor for driving. At the same time, the grinding wheel docking sleeve 201 is connected to the grinding wheel docking end 104 by bolts. A suitable grit abrasive 206 is selected and fixedly connected to the grinding wheel mounting base 204 through the grinding wheel base 205 to install the grinding wheel 2. The first universal joint 203 set between the grinding wheel mounting base 204 and the connecting rod 202 gives the grinding wheel mounting base 204 the ability to freely deflect within a certain range, so as to increase the fit between the abrasive 206 and the side wall when grinding the inner wall of the valve body and improve the grinding effect.

[0036] Example 2

[0037] Based on Embodiment 1, in order to supplement the specific method of installing the support structure 3 at the valve body opening, which was not mentioned in Embodiment 1.

[0038] like Figure 5As shown, in this embodiment, one end of the limiting slide plate 303 is fixedly connected to the lead screw 305. The lead screw 305 is slidably sleeved on the side surface of the mounting plate 301. A bevel gear 306 is screwed onto the side surface of the lead screw 305. The bevel gear 306 is rotatably installed inside the side surface of the mounting plate 301. A bevel gear disk 307 that meshes with the bevel gear 306 is rotatably embedded on the front surface of the mounting plate 301. A limiting plate 308 is fixedly installed on the front surface of the bevel gear disk 307. A handle 309 is fixedly installed on the front surface of the limiting plate 308. A locking bolt 310 is screwed onto the limiting plate 308 in the front-back direction. An anti-slip washer 311 is embedded on the front surface of the mounting plate 301. The anti-slip washer 311 and one end of the locking bolt 310 abut against each other.

[0039] In practice, after the clamping disc 301 is placed against the opening of the valve body, the limiting disc 308 is rotated by the handle 309, which drives the bevel gear disc 307 to rub each bevel gear 306, thereby synchronously controlling the sliding of each lead screw 305 and synchronously driving each limiting slide plate 303 to slide in the limiting slide groove 302. The clamp 304 is used to abut against the edge of the opening to achieve clamping and limiting, and the probe 1 sleeved at the second universal joint 312 is relatively forced to center and provide certain support, which facilitates the grinding work.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve grinding device, characterized in that, include: The probe (1) includes a sleeve rod (101), and an inner rod (102) is rotatably sleeved inside the sleeve rod (101) through bearings at both ends; A grinding tool (2) is fixedly installed at one end of the inner rod (102); The support structure (3) includes a mounting plate (301). The rear surface of the mounting plate (301) is provided with a limiting groove (302) arranged in a ring at equal angles. The limiting groove (302) is slidably engaged with a limiting slide plate (303). A clamp (304) is fixedly installed on the rear surface of the limiting slide plate (303). A second universal joint (312) is rotatably installed in the middle of the mounting plate (301). The second universal joint (312) is slidably engaged with the sleeve rod (101).

2. The valve grinding device according to claim 1, characterized in that, One end of the sleeve rod (101) is fixedly installed with a motor connecting sleeve (103), the inner rod (102) is fixedly installed with a connecting pin (105) at one end of the motor connecting sleeve (103), and the other end of the inner rod (102) is fixedly installed with a mold mating end (104).

3. The valve grinding device according to claim 2, characterized in that, The grinding tool (2) includes: The mold mating sleeve (201) is engaged with the mold mating end (104) by bolts; The connecting rod (202) is fixedly installed at one end of the mold mating sleeve (201); The first universal joint (203) is rotatably connected to one end of the connecting rod (202) in the middle; The mold mounting base (204) is rotatably connected to the two outer ends of the first universal joint (203).

4. The valve grinding device according to claim 3, characterized in that, The grinding tool (2) also includes: The mold base plate (205) is fixedly installed on the rear surface of the mold mounting base (204) by bolts; The abrasive (206) is fixedly installed on the rear surface of the grinding wheel base (205).

5. The valve grinding device according to claim 4, characterized in that, One end of the limiting slide plate (303) is fixedly connected to the lead screw (305). The lead screw (305) is slidably sleeved on the side surface of the mounting plate (301). A bevel gear (306) is screwed onto the side surface of the lead screw (305). The bevel gear (306) is rotatably installed inside the side surface of the mounting plate (301). A bevel gear disc (307) that meshes with the bevel gear (306) is rotatably embedded on the front surface of the mounting plate (301).

6. The valve grinding apparatus according to claim 5, characterized in that, A limiting plate (308) is fixedly installed on the front surface of the bevel gear disc (307). A handle (309) is fixedly installed on the front surface of the limiting plate (308). A locking bolt (310) is screwed onto the limiting plate (308) in the front-back direction. An anti-slip washer (311) is embedded on the front surface of the clamping disc (301). The anti-slip washer (311) abuts against one end of the locking bolt (310).

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