Tool special for grinding valve seat

Abstract

The invention discloses a tool special for valve seat grinding, and relates to the technical field of valve seat grinding, the tool comprises a fixing support, a guide seat is arranged at the top of the fixing support, and two fixing bolts are symmetrically arranged at the two ends of the fixing support; a guide sleeve is arranged on the inner side of the guide seat, and two limiting screws are symmetrically arranged on the two sides of the guide seat. A movable nut is arranged at the top of the guide sleeve, an anti-falling nut is arranged at the bottom of the guide sleeve, and a connecting rod is arranged on the inner side of the guide sleeve; a spring component is arranged on the side, close to the anti-disengaging nut, of the movable nut. The bottom of the connecting rod penetrates through the anti-disengaging nut and is provided with a pressing plate. Abrasive paper is arranged at the bottom of the pressing plate; a pressing gasket is arranged at the bottom of the abrasive paper; and a compression nut is arranged at the bottom of the compression gasket. By means of the structure, influences of the working environment can be avoided, the valve seat grinding machining difficulty is reduced, the physical strength and time of workers are saved, the working efficiency is improved, the pressing plate and abrasive paper can be pressed, chippings can be discharged, and the abrasive paper is prevented from slipping.

Description

Technical Field

[0001] The invention relates to the technical field of valve seat grinding, and in particular to a special tool for valve seat grinding. Background Art

[0002] With the progress and development of society, the number of ships used for transportation is increasing. Therefore, the number of ships that need maintenance and repair is also increasing. And almost every ship repair involves valve system repair. Whether it is a valve system repaired by external clamps or dock clamps, the repair quality is particularly critical, especially the quality of valve system repaired by dock clamps directly affects the ship's docking period. Most valve system repairs require the valve system to be ground before inspection to ensure quality.

[0003] The existing grinding process of valve systems is usually done manually, which greatly consumes the physical strength and time of workers. When grinding dock clamp valve systems, since grinding is done on-site, it is easily affected by the working environment and space, which increases the difficulty of grinding. In addition, during the grinding process, the friction between sandpaper and valve seat will produce a large amount of metal debris. If these metal debris are not discharged in time, they may cause the sandpaper to slip, affecting the grinding effect and efficiency. Therefore, we propose a special tool for valve seat grinding to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide a special tool for valve seat grinding to solve the problem that the existing valve system grinding process proposed in the above background technology is usually carried out manually, which will greatly consume the workers' physical strength and time. Moreover, when the dock clamp valve system is ground, since it is ground on-site, it is easily affected by the working environment and space, which increases the difficulty of grinding. In addition, during the grinding process, the friction between the sandpaper and the valve seat will produce a large amount of metal debris. If these metal debris are not discharged in time, they may cause the sandpaper to slip, affecting the grinding effect and efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions: A special tool for valve seat grinding, comprising a fixed bracket, a guide seat is arranged on the top of the fixed bracket, two fixing bolts are symmetrically arranged at both ends of the fixed bracket, a guide sleeve is arranged on the inner side of the guide seat, two limit screws are symmetrically arranged on both sides of the guide seat, a movable nut is arranged on the top of the guide sleeve, an anti-drop nut is arranged at the bottom of the guide sleeve, a connecting rod is arranged on the inner side of the guide sleeve, a spring component is arranged on the side of the movable nut close to the anti-drop nut, a pressure plate is arranged at the bottom of the connecting rod through the anti-drop nut, sandpaper is arranged at the bottom of the pressure plate, a compression gasket is arranged at the bottom of the sandpaper, and a compression nut is arranged at the bottom of the compression gasket; A limiting groove is arranged on the inner side of the pressing plate, and two pressing plate chip removal grooves are symmetrically arranged at both ends of the bottom of the pressing plate. A plurality of pressing grooves are arranged on both sides of the two chip removal grooves in a uniform rotation around the axis.

[0006] Furthermore, two waist-shaped grooves are symmetrically arranged at both ends of the fixing bracket.

[0007] Furthermore, the bottom of the guide seat is fixedly connected to the fixed bracket, and the two fixing bolts include bolts, one end of the bolt passes through a waist-shaped groove and is provided with a fixing nut, the bolt is slidingly connected to the fixed bracket through the waist-shaped groove, and the fixing nut is threadedly connected to the bolt.

[0008] Furthermore, the guide sleeve is slidably connected to the guide seat, and the two limit screws are respectively threadedly connected to the two sides of the guide seat, and the limit screws pass through the guide seat and fit tightly with the guide sleeve.

[0009] Furthermore, the outer side of the movable nut is threadedly connected to the guide sleeve, and the outer side of the anti-dropping nut is threadedly connected to the guide sleeve.

[0010] Furthermore, the connecting rod includes a rod body, a rod nut is provided at the top of the rod body through a movable nut, a rod shoulder is provided on the rod body, a limit pin is provided at the bottom of the rod body through an anti-drop nut, the top of the rod body is rotatably connected to the movable nut, the bottom of the rod body is rotatably connected to the anti-drop nut, the rod nut is fixedly connected to the rod body, the rod shoulder is fixedly connected to the rod body, and the limit pin is fixedly connected to the rod body.

[0011] Furthermore, the spring component includes two friction pads, and a spring is arranged on one side of the two friction pads close to each other. One friction pad is fixedly connected to the rod shoulder, and the inner side of the other friction pad is slidably connected to the rod body. Both ends of the spring are respectively fixedly connected to the two friction pads, and the pressure plate is slidably connected to the limit pin through a limit groove.

[0012] Furthermore, two sandpaper chip grooves are symmetrically arranged on both sides of the sandpaper, the sandpaper is slidably connected to the rod body, the clamping gasket includes a mounting gasket, a plurality of arc pressure rods are evenly rotated around the axis on the top of the mounting gasket, the inner side of the mounting gasket is slidably connected to the rod body, and the plurality of arc pressure rods are fixedly connected to the mounting gasket.

[0013] Furthermore, the inner side of the clamping nut is threadedly connected to the rod body, and the top of the clamping nut is tightly fitted to the mounting gasket.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a fixed bracket to fix the guide sleeve inside the top guide seat, so that the electric wrench can drive the connecting rod to rotate, and then drive the bottom pressure plate of the connecting rod to rotate, and further drive the sandpaper fixed at the bottom of the pressure plate to rotate, so as to grind the valve seat, avoid the influence of the working environment and space, reduce the difficulty of grinding valve seats of different specifications, save workers' physical strength and time, and improve work efficiency.

[0015] 2. The present invention tightens the clamping nut and then tightens the clamping gasket, so that multiple arc-shaped pressure rods on the installation gasket press the sandpaper into the multiple pressure grooves at the bottom of the pressure plate, thereby fixing the sandpaper to prevent the sandpaper from slipping during the grinding process. At the same time, the pressure plate chip grooves at both ends of the pressure plate and the sandpaper chip grooves at both ends of the sandpaper can quickly discharge the metal debris generated by grinding, thereby preventing the sandpaper from slipping and affecting the grinding effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the side installation structure of the present invention; Figure 3 It is a schematic diagram of the guide seat installation structure of the present invention; Figure 4 It is a schematic diagram of the spring component installation structure of the present invention; Figure 5 It is a schematic diagram of the pressing plate installation structure of the present invention; Figure 6 It is a schematic diagram of the connecting rod structure of the present invention; Figure 7 It is a schematic diagram of the structure of the compression nut of the present invention; Figure 8 It is a schematic diagram of the pressing plate structure of the present invention; Fig. 9 It is a schematic diagram of the sandpaper structure of the present invention; Fig.10 It is a schematic diagram of the structure of the compression gasket of the present invention; : 1. fixed bracket; 101. waist-shaped groove; 2. guide seat; 3. fixing bolt; 301. bolt; 302. fixing nut; 4. guide sleeve; 5. limit screw; 6. movable nut; 7. anti-slip nut; 8. connecting rod; 801. rod body; 802. rod body nut; 803. rod shoulder; 804. limit pin; 9. spring component; 901. friction gasket; 902. spring; 10. pressure plate; 1001. limit groove; 1002. pressure plate chip groove; 1003. pressure groove; 11. sandpaper; 1101. sandpaper chip groove; 12. clamping gasket; 1201. installation gasket; 1202. arc pressure rod; 13. clamping nut. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1: See also Figure 1-Figure 6 The present invention provides a technical solution: a special tool for valve seat grinding, comprising a fixed bracket 1, a guide seat 2 is arranged on the top of the fixed bracket 1, two fixing bolts 3 are symmetrically arranged at both ends of the fixed bracket 1, a guide sleeve 4 is arranged on the inner side of the guide seat 2, two limit screws 5 are symmetrically arranged on both sides of the guide seat 2, a movable nut 6 is arranged on the top of the guide sleeve 4, an anti-dropping nut 7 is arranged at the bottom of the guide sleeve 4, a connecting rod 8 is arranged on the inner side of the guide sleeve 4, a spring component 9 is arranged on the side of the movable nut 6 close to the anti-dropping nut 7, a pressing plate 10 is arranged at the bottom of the connecting rod 8 passing through the anti-dropping nut 7, a sandpaper 11 is arranged at the bottom of the pressing plate 10, a clamping gasket 12 is arranged at the bottom of the sandpaper 11, and a clamping nut 13 is arranged at the bottom of the clamping gasket 12.

[0019] Two waist-shaped grooves 101 are symmetrically arranged at both ends of the fixing bracket 1. In this example, by providing two waist-shaped grooves 101, it is convenient to install two fixing bolts 3, thereby fixing the fixing bracket 1 tightly, and facilitating grinding processing.

[0020] The bottom of the guide seat 2 is fixedly connected to the fixed bracket 1, and the two fixing bolts 3 include bolts 301. One end of the bolt 301 passes through the waist-shaped groove 101 and is provided with a fixing nut 302. The bolt 301 is slidably connected to the fixed bracket 1 through the waist-shaped groove 101, and the fixing nut 302 is threadedly connected to the bolt 301. In this example, by providing the guide seat 2, it is convenient to install the guide sleeve 4 to ensure the stability of the grinding process.

[0021] The guide sleeve 4 is slidably connected to the guide seat 2, and two limit screws 5 are respectively threadedly connected to the two sides of the guide seat 2. The limit screws 5 pass through the guide seat 2 and fit tightly with the guide sleeve 4. In this example, by providing two limit screws 5, it is easy to disassemble and assemble the guide sleeve 4, and it is easy to install.

[0022] The outer side of the movable nut 6 is threadedly connected to the guide sleeve 4, and the outer side of the anti-drop nut 7 is threadedly connected to the guide sleeve 4. In this example, by setting the movable nut 6, the spring component 9 can be pressed, and then the sandpaper 11 at the bottom of the bottom pressing plate 10 can be pressed, so as to better perform the grinding process.

[0023] The connecting rod 8 includes a rod body 801, a rod body nut 802 is provided at the top of the rod body 801 through the movable nut 6, a rod shoulder 803 is provided on the rod body 801, and a limit pin 804 is provided at the bottom of the rod body 801 through the anti-drop nut 7, the top of the rod body 801 is rotatably connected to the movable nut 6, the bottom of the rod body 801 is rotatably connected to the anti-drop nut 7, the rod body nut 802 is fixedly connected to the rod body 801, the rod shoulder 803 is fixedly connected to the rod body 801, and the limit pin 804 is fixedly connected to the rod body 801. In this example, by providing the limit pin 804, it is convenient to install and fix the pressing plate 10, so as to prevent the pressing plate 10 from slipping during the grinding process, thereby affecting the grinding effect and efficiency.

[0024] The spring component 9 includes two friction pads 901, and a spring 902 is arranged on one side of the two friction pads 901 close to each other. One friction pad 901 is fixedly connected to the rod shoulder 803, and the inner side of the other friction pad 901 is slidably connected to the rod body 801. Both ends of the spring 902 are respectively fixedly connected to the two friction pads 901, and the pressure plate 10 is slidably connected to the limit pin 804 through the limit groove 1001. In this example, by arranging the spring component 9, the sandpaper 11 can be pressed downward, which is convenient for better grinding.

[0025] Working principle: tighten the anti-drop nut 7 with the bottom of the guide sleeve 4, then pass the guide sleeve 4 through the guide seat 2, and adjust the appropriate height, tighten the two limit screws 5 at both ends, and then fix the guide sleeve 4, pass the connecting rod 8 through the anti-drop nut 7, align the inner limit groove 1001 of the pressure plate 10 with the limit pin 804 at the bottom of the rod body 801, and insert it, then install the sandpaper 11, tighten the clamping nut 13, so that the multiple arc-shaped pressure rods 1202 on the installation gasket 1201 are pressed into multiple Press the inside of the groove 1003, and then fix the pressing plate 10 and the sandpaper 11, align the guide seat 2 with the connecting rod 8 and insert it, pass the two bolts 301 through the flange of the valve seat and the two waist-shaped grooves 101 on the fixed bracket 1 in turn, tighten the two fixing nuts 302, and then fix the fixed bracket 1, and then tighten the movable nut 6, compress the spring component 9, so that the bottom sandpaper 11 fits tightly with the valve seat, and the electric wrench drives the connecting rod 8 to rotate, and then drives the sandpaper 11 at the bottom of the pressing plate 10 to grind the valve seat.

[0026] Embodiment 2: See also Figure 7-10The present invention provides a technical solution: a special tool for valve seat grinding, comprising a fixed bracket 1, a guide seat 2 is arranged on the top of the fixed bracket 1, two fixing bolts 3 are symmetrically arranged at both ends of the fixed bracket 1, a guide sleeve 4 is arranged on the inner side of the guide seat 2, two limit screws 5 are symmetrically arranged on both sides of the guide seat 2, a movable nut 6 is arranged on the top of the guide sleeve 4, an anti-dropping nut 7 is arranged at the bottom of the guide sleeve 4, a connecting rod 8 is arranged on the inner side of the guide sleeve 4, a spring component 9 is arranged on the side of the movable nut 6 close to the anti-dropping nut 7, a pressing plate 10 is arranged at the bottom of the connecting rod 8 passing through the anti-dropping nut 7, a sandpaper 11 is arranged at the bottom of the pressing plate 10, a compression gasket 12 is arranged at the bottom of the sandpaper 11, and a compression nut 13 is arranged at the bottom of the compression gasket 12; A limiting groove 1001 is arranged inside the pressing plate 10 , and two pressing plate chip removal grooves 1002 are symmetrically arranged at both ends of the bottom of the pressing plate 10 . A plurality of pressing grooves 1003 are arranged on both sides of the two chip removal grooves in a uniform rotation around the axis.

[0027] The connecting rod 8 includes a rod body 801, a rod body nut 802 is provided at the top of the rod body 801 through the movable nut 6, a rod shoulder 803 is provided on the rod body 801, and a limit pin 804 is provided at the bottom of the rod body 801 through the anti-drop nut 7, the top of the rod body 801 is rotatably connected to the movable nut 6, the bottom of the rod body 801 is rotatably connected to the anti-drop nut 7, the rod body nut 802 is fixedly connected to the rod body 801, the rod shoulder 803 is fixedly connected to the rod body 801, and the limit pin 804 is fixedly connected to the rod body 801. In this example, by providing the rod body nut 802, it is convenient for the electric wrench to drive the connecting rod 8 to rotate, which is convenient for grinding processing.

[0028] Two sandpaper chip grooves 1101 are symmetrically arranged on both sides of the sandpaper 11, the sandpaper 11 is slidably connected to the rod body 801, and the pressing pad 12 includes a mounting pad 1201, and a plurality of arc-shaped pressure rods 1202 are evenly rotated around the axis at the top of the mounting pad 1201, and the inner side of the mounting pad 1201 is slidably connected to the rod body 801, and the plurality of arc-shaped pressure rods 1202 are fixedly connected to the mounting pad 1201. In this example, by arranging a plurality of arc-shaped pressure rods 1202, the sandpaper 11 can be pressed tightly to prevent the sandpaper from slipping during the grinding process, thereby affecting the grinding effect and efficiency.

[0029] The inner side of the clamping nut 13 is threadedly connected to the rod body 801 , and the top of the clamping nut 13 is tightly fitted to the mounting gasket 1201 .

[0030] Working principle: When the connecting rod 8 drives the pressure plate 10 to rotate, it drives the bottom sandpaper 11 to grind the valve seat. During this process, a large amount of metal debris is generated through the sandpaper chip groove 1101, enters the multiple pressure plate chip grooves 1002 at the bottom of the pressure plate 10, and is then discharged to avoid affecting the grinding process of the sandpaper 11.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special tool for valve seat grinding, characterized by: The invention comprises a fixed bracket (1), wherein a guide seat (2) is arranged at the top of the fixed bracket (1), two fixing bolts (3) are symmetrically arranged at both ends of the fixed bracket (1), a guide sleeve (4) is arranged inside the guide seat (2), two limit screws (5) are symmetrically arranged on both sides of the guide seat (2), a movable nut (6) is arranged at the top of the guide sleeve (4), an anti-drop nut (7) is arranged at the bottom of the guide sleeve (4), a connecting rod (8) is arranged inside the guide sleeve (4), a spring component (9) is arranged on the side of the movable nut (6) close to the anti-drop nut (7), a pressing plate (10) is arranged at the bottom of the connecting rod (8) passing through the anti-drop nut (7), a sandpaper (11) is arranged at the bottom of the pressing plate (10), a pressing gasket (12) is arranged at the bottom of the sandpaper (11), and a pressing nut (13) is arranged at the bottom of the pressing gasket (12); A limiting groove (1001) is provided on the inner side of the pressing plate (10), two pressing plate chip removal grooves (1002) are symmetrically provided at both ends of the bottom of the pressing plate (10), and a plurality of pressing grooves (1003) are provided on both sides of the two chip removal grooves in a uniform rotation around the axis.

2. A valve seat grinding tool according to claim 1, characterized in that: Two waist-shaped grooves (101) are symmetrically arranged at both ends of the fixing bracket (1).

3. A valve seat grinding tool according to claim 2, characterized in that: The bottom of the guide seat (2) is fixedly connected to the fixed bracket (1), and the two fixing bolts (3) include bolts (301). One end of the bolt (301) passes through the waist-shaped groove (101) and is provided with a fixing nut (302). The bolt (301) is slidably connected to the fixed bracket (1) through the waist-shaped groove (101), and the fixing nut (302) is threadedly connected to the bolt (301).

4. A valve seat grinding tool according to claim 3, characterized in that: The guide sleeve (4) is slidably connected to the guide seat (2), and the two limit screws (5) are respectively threadedly connected to the two sides of the guide seat (2), and the limit screws (5) pass through the guide seat (2) and fit tightly with the guide sleeve (4).

5. A valve seat grinding tool according to claim 4, characterized in that: The outer side of the movable nut (6) is threadedly connected to the guide sleeve (4), and the outer side of the anti-drop nut (7) is threadedly connected to the guide sleeve (4).

6. A valve seat grinding tool according to claim 5, characterized in that: The connecting rod (8) comprises a rod body (801); the top of the rod body (801) passes through a movable nut (6) and is provided with a rod body nut (802); the rod body (801) is provided with a rod shoulder (803); the bottom of the rod body (801) passes through an anti-drop nut (7) and is provided with a limit pin (804); the top of the rod body (801) is rotatably connected to the movable nut (6); the bottom of the rod body (801) is rotatably connected to the anti-drop nut (7); the rod body nut (802) is fixedly connected to the rod body (801); the rod shoulder (803) is fixedly connected to the rod body (801); and the limit pin (804) is fixedly connected to the rod body (801).

7. A valve seat grinding tool according to claim 6, characterized in that: The spring component (9) comprises two friction washers (901), a spring (902) being arranged on one side of the two friction washers (901) close to each other, one friction washers (901) being fixedly connected to the rod shoulder (803), the inner side of the other friction washers (901) being slidably connected to the rod body (801), both ends of the spring (902) being fixedly connected to the two friction washers (901), and the pressure plate (10) being slidably connected to the limit pin (804) via the limit groove (1001).

8. A valve seat grinding tool according to claim 6, characterized in that: Two sandpaper chip removal grooves (1101) are symmetrically arranged on both sides of the sandpaper (11); the sandpaper (11) is slidably connected to the rod body (801); the pressing gasket (12) comprises a mounting gasket (1201); a plurality of arc-shaped pressure rods (1202) are evenly rotated around an axis at the top of the mounting gasket (1201); the inner side of the mounting gasket (1201) is slidably connected to the rod body (801); and the plurality of arc-shaped pressure rods (1202) are fixedly connected to the mounting gasket (1201).

9. A valve seat grinding tool according to claim 6, characterized in that: The inner side of the clamping nut (13) is threadedly connected to the rod body (801), and the top of the clamping nut (13) is tightly fitted to the mounting gasket (1201).

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