A grinder for high pressure flanges

Abstract

The application relates to a grinder for a high-pressure flange, which comprises a motor, a support, a first gear, a second gear, a grinding disc, an abrasive cloth, a first sleeve, a second sleeve, a third sleeve, an adjusting rod, an adjusting nut, a spring, an adjusting cylinder, a sliding block, a spring ring and a locking nut. The grinder for the high-pressure flange is fixed on the high-pressure flange through cooperation of the adjusting rod, the adjusting cylinder and the sliding block, the grinding disc is aligned with a sealing surface of the high-pressure flange, the first gear is driven to rotate by the motor, the second gear is driven to rotate by the first gear, the second sleeve is driven to rotate by the second gear, the grinding disc is driven to rotate by the second sleeve, and the abrasive cloth is driven to rotate while grinding and repairing the sealing surface of the high-pressure flange. The grinder has high positioning precision, can replace manual lifting during grinding and repairing, reduces labor intensity, and improves repairing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-pressure flange maintenance, and particularly relates to a grinder for high-pressure flange. BACKGROUND

[0002] The maintenance work of high-pressure polyethylene device, EVA device and other super-high pressure devices includes the maintenance of high-pressure or super-high pressure flange sealing surface, and the sealing surface of the high-pressure flange needs to be finely ground and repaired during the maintenance, otherwise, leakage will occur during the work of the high-pressure flange, causing the device to stop working; in the existing high-pressure flange sealing surface repair, the operator usually holds a power drill, the power drill drives a grinding disc to grind and repair the high-pressure flange sealing surface, the positioning accuracy is poor, and some damaged or severely corroded sealing surfaces often need to be continuously operated for more than 20 hours to complete the repair work, the operation labor intensity is large, and the repair efficiency is low. SUMMARY

[0003] To solve the above problems, the present application provides a grinder for high-pressure flange.

[0004] The technical scheme of the present application is as follows: a grinder for high-pressure flange, comprising a support, a first sleeve, a second sleeve, an adjusting rod and a sliding block; the support is provided with a first through hole and a second through hole, a motor is installed in the first through hole, the first sleeve is arranged in the second through hole, the second sleeve is sleeved on the first sleeve, and the second sleeve and the first sleeve are gap-fitted; the output end of the motor is connected with a first gear, the first gear is engaged with a second gear, and the second gear is installed on the second sleeve; a grinding disc is installed on the side of the second sleeve away from the motor, and the side of the grinding disc away from the second gear is a conical surface matched with the sealing surface of the high-pressure flange; abrasive cloth is attached to the side of the grinding disc away from the second gear, and the abrasive cloth is shaped to match the conical surface; a spring is sleeved on the first sleeve; one end of the spring abuts against the support, and the other end of the spring abuts against the second gear; a third sleeve is arranged in the first sleeve, and the end of the third sleeve away from the motor is provided with a sliding groove, and the inner side of the sliding groove is a slope; the adjusting rod is arranged in the third sleeve; the end of the adjusting rod close to the sliding groove extends out of the third sleeve; the end of the adjusting rod close to the sliding groove is connected with an adjusting cylinder, and the sliding groove is accommodated in the adjusting cylinder; the adjusting cylinder is provided with a third through hole, and the sliding block penetrates through the third through hole and is slidably connected with the sliding groove; the sliding block can be accommodated in the inner hole of the high-pressure flange; the sliding block is provided with a groove; a spring ring is sleeved on the outer side of the sliding block, and the sliding block and the adjusting cylinder are accommodated in the inner hole of the spring ring, and the part of the spring ring close to the sliding block is accommodated in the groove.

[0005] Further, the adjusting rod is provided with a first external thread on the outer wall of the far end of the adjusting cylinder, and an adjusting nut is sleeved on the first external thread.

[0006] Further, the second sleeve is provided with a second external thread, the second gear is provided with a fourth through hole, the fourth through hole is provided with a first internal thread, and the second sleeve and the fourth through hole are threadedly connected; the grinding disc is provided with a fifth through hole, the fifth through hole is provided with a second internal thread, and the second sleeve and the fifth through hole are threadedly connected; a locking nut is sleeved on the second sleeve, and the abrasive cloth is fixed on the grinding disc through the locking nut.

[0007] Further, the contact surface between the locking nut and the abrasive cloth is in the shape of the conical surface.

[0008] Further, the motor is fixed in the first through hole through the first screw.

[0009] Further, the first sleeve is fixed in the second through hole through a second screw.

[0010] Further, the adjusting cylinder is provided with at least two third through holes, the sliding blocks are accommodated in the at least two third through holes, and the at least two sliding blocks are located in the inner holes of the spring rings.

[0011] Further, the sliding blocks are provided with at least two recesses, and the spring rings are accommodated in the at least two recesses.

[0012] Further, the side of the sliding block close to the inner hole wall of the flange is parallel to the inner hole wall surface of the flange.

[0013] Compared with the prior art, the advantages of the present application are as follows: when the high-pressure flange sealing surface needs to be repaired, the adjusting cylinder and the sliding block are inserted into the inner hole of the high-pressure flange, the conical surface of the grinding disc is abutted against the sealing surface of the high-pressure flange, and then the abrasive cloth is abutted against the sealing surface of the high-pressure flange; the adjusting rod is extended outward, the adjusting rod drives the adjusting cylinder to move outward, the adjusting cylinder drives the sliding block to slide on the sliding groove and move outward at the same time, due to the principle of the sliding groove inclined surface transmission, the sliding block moves upward at the same time of moving outward, until the sliding block is tightly abutted against the inner hole wall surface of the high-pressure flange, and the adjusting rod stops extending outward, so that the grinder for the high-pressure flange is fixed on the high-pressure flange; the motor is started, the motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the second sleeve to rotate, the second sleeve drives the grinding disc to rotate, and then the grinding disc drives the abrasive cloth to rotate and grind the sealing surface of the high-pressure flange; the grinder for the high-pressure flange is fixed on the high-pressure flange through the cooperation of the adjusting rod, the adjusting cylinder and the sliding block, the grinding disc is aligned with the sealing surface of the high-pressure flange, the positioning accuracy is high, manual lifting is replaced by grinding and repairing, the labor intensity is reduced, and the repairing efficiency is improved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a cross-sectional view showing the working state of the present invention;

[0016] Figure 3 This is a cross-sectional view of the third sleeve of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the bracket of the present invention.

[0018] The components are: 1. Motor; 2. Bracket; 3. First gear; 4. Second gear; 5. Grinding disc; 6. Abrasive cloth; 7. First sleeve; 8. Second sleeve; 9. Third sleeve; 10. Adjusting rod; 11. Adjusting nut; 12. Spring; 13. Adjusting cylinder; 14. Slider; 15. Spring ring; 16. Flange; 17. First screw; 18. Second screw; 19. Slide groove; 20. Locking nut. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] like Figures 1-4As shown, a grinder for high-pressure flange 16 includes support 2, first sleeve 7, second sleeve 8, adjusting rod 10 and sliding block 14; support 2 is provided with first through hole and second through hole, motor 1 is installed in first through hole, first sleeve 7 is arranged in second through hole, second sleeve 8 is sleeved on first sleeve 7, second sleeve 8 and first sleeve 7 are clearance fit; the output end of motor 1 is connected with first gear 3, first gear 3 is engaged with second gear 4, the outer side of second sleeve 8 is provided with second external thread, second gear 4 is provided with fourth through hole, fourth through hole is provided with first internal thread, second sleeve 8 and fourth through hole are threadedly connected; grinding disc 5 is provided with fifth through hole, fifth through hole is provided with second internal thread, second sleeve 8 and fifth through hole are threadedly connected, grinding disc 5 is located on the side of second sleeve 8 away from motor 1; locking nut 20 is sleeved on second sleeve 8, abrasive cloth 6 is fixed on grinding disc 5 through locking nut 20, one side of grinding disc 5 away from second gear 4 is conical surface for sealing surface of high-pressure flange 16, abrasive cloth 6 is conical surface, the contact surface of locking nut 20 and abrasive cloth 6 is conical surface, the connection mode of internal and external threads makes second gear 4 and grinding disc 5 can be detached from second sleeve 8, which facilitates replacement of grinding disc 5 and second gear 4 when they are worn out; spring 12 is sleeved on first sleeve 7; one end of spring 12 abuts against support 2, the other end abuts against second gear 4; third sleeve 9 is arranged in first sleeve 7, the end of third sleeve 9 away from motor 1 is provided with sliding groove 19, the inner side of sliding groove 19 is inclined surface; adjusting rod 10 is arranged in third sleeve 9, the end of adjusting rod 10 close to sliding groove 19 extends out of third sleeve 9; adjusting cylinder 13 is connected with the end of adjusting rod 10 close to sliding groove 19, adjusting cylinder 13 is provided with third through hole, sliding block 14 penetrates third through hole and is in sliding connection with sliding groove 19; sliding block 14 is accommodated in third through hole and is in sliding connection with sliding groove 19; sliding block 14 can be accommodated in the inner hole of high-pressure flange 16; sliding block 14 is provided with groove; spring ring 15 is sleeved on the outer side of sliding block 14, and sliding block 14 and adjusting cylinder 13 are accommodated in the inner hole of spring ring 15, the part of spring ring 15 close to sliding block 14 is accommodated in groove; when the grinder for high-pressure flange 16 is not working, spring ring 15 is in tension state, and spring ring 15 limits sliding block 14; when the sealing surface of high-pressure flange 16 needs to be repaired, adjusting cylinder 13 and sliding block 14 are inserted into the inner hole of high-pressure flange 16, the conical surface of grinding disc 5 abuts against the sealing surface of high-pressure flange 16, and then abrasive cloth 6 abuts tightly against the sealing surface of high-pressure flange 16;The adjusting rod 10 is extended outward, the adjusting rod 10 drives the adjusting cylinder 13 to move outward, the adjusting cylinder 13 in turn drives the sliding block 14 to slide on the sliding groove 19 while moving outward, due to the principle of inclined surface transmission of the sliding groove 19, the sliding block 14 also moves upward while moving outward, the spring ring 15 is expanded, until the sliding block 14 is tightly attached to the inner hole wall surface of the high-pressure flange 16, the adjusting rod 10 stops extending outward, thereby fixing the grinder for the high-pressure flange 16 on the high-pressure flange 16; the motor 1 is started, the motor 1 drives the first gear 3 to rotate, the first gear 3 drives the second gear 4 to rotate, the second gear 4 in turn drives the second sleeve 8 to rotate, the second sleeve 8 drives the grinding disc 5 to rotate, and the grinding disc 5 in turn drives the abrasive cloth 6 to rotate while grinding and repairing the sealing surface of the high-pressure flange 16; the grinder for the high-pressure flange 16 is fixed on the high-pressure flange 16 through the cooperation of the adjusting rod 10, the adjusting cylinder 13 and the sliding block 14, the grinding disc 5 is aligned with the sealing surface of the high-pressure flange 16, the positioning accuracy is high, the grinding and repairing time is replaced by manual lifting, the labor intensity is reduced, and the repair efficiency is improved; when the repair is completed, the motor 1 is turned off, the adjusting rod 10 is extended inward, the adjusting rod 10 drives the adjusting cylinder 13 to move inward, the adjusting cylinder 13 drives the sliding block 14 to move inward while sliding in the sliding groove 19, while the sliding block 14 slides in the sliding groove 19, due to the principle of inclined surface transmission, the sliding block 14 moves downward, and the sliding block 14 is quickly retracted downward under the action of the spring ring 15, thereby making the sliding block 14 away from the inner hole wall surface of the high-pressure flange 16, so that the grinder for the high-pressure flange 16 can be taken out, and the grinding and repairing work is completed.

[0021] The outer wall of the end of the adjusting rod 10 away from the adjusting cylinder 13 is provided with a first external thread, and the first external thread is sleeved with the adjusting nut 11; when it is necessary to extend or retract the adjusting rod 10 outward, the adjusting nut 11 is rotated to drive the adjusting rod 10 to extend or retract, thereby facilitating the operation of the adjusting rod 10 when fixing the grinder for the high-pressure flange 16.

[0022] The motor 1 is fixed in the first through hole through the first screw 17, and the first sleeve 7 is fixed in the second through hole through the second screw 18; through the fixing mode of the first screw 17 and the second screw 18, the motor 1 and the first sleeve 7 can be detached from the support 2, thereby facilitating replacement when the motor 1 fails and the first sleeve 7 is damaged.

[0023] The adjusting cylinder 13 is provided with at least two third through holes, and the at least two third through holes are respectively arranged with the sliding block 14, and the at least two sliding blocks 14 are located in the inner hole of the spring ring 15; one side of the sliding block 14 close to the inner hole wall of the flange 16 is parallel to the inner hole wall surface of the flange 16, so that the contact surface of the sliding block 14 is larger when it is tightly attached to the inner hole wall surface of the high-pressure flange 16, and the stress effect is better; the at least two sliding blocks 14 are tightly attached to the inner hole wall surface of the high-pressure flange 16, so that the grinder for the high-pressure flange 16 fixed on the high-pressure flange 16 is more stable.

[0024] The sliding block 14 is provided with at least two grooves, and at least two spring rings 15 are arranged in the at least two grooves, so that the at least two spring rings 15 limit the sliding block 14, and the sliding block 14 is more stable during movement.

[0025] The working mode of the present application is described as follows:

[0026] When the sealing surface of the high-pressure flange 16 needs to be repaired, the adjusting cylinder 13 and the sliding block 14 are inserted into the inner hole of the high-pressure flange 16, the conical surface of the grinding disc 5 is abutted against the sealing surface of the high-pressure flange 16, and then the abrasive cloth 6 is abutted against the sealing surface of the high-pressure flange 16; the adjusting rod 10 is extended outward, the adjusting rod 10 drives the adjusting cylinder 13 to move outward, the adjusting cylinder 13 drives the sliding block 14 to slide on the sliding groove 19 and move outward at the same time, due to the principle of inclined surface transmission, the sliding block 14 moves upward at the same time of moving outward, the spring ring 15 is stretched, and the sliding block 14 is tightly abutted against the inner hole wall surface of the high-pressure flange 16 until the adjusting rod 10 stops extending outward, so that the grinder for the high-pressure flange 16 is fixed on the high-pressure flange 16; the motor 1 is started, the motor 1 drives the first gear 3 to rotate, the first gear 3 drives the second gear 4 to rotate, the second gear 4 drives the second sleeve 8 to rotate, the second sleeve 8 drives the grinding disc 5 to rotate, and then the grinding disc 5 drives the abrasive cloth 6 to rotate and grind and repair the sealing surface of the high-pressure flange 16; the grinder for the high-pressure flange 16 is fixed on the high-pressure flange 16 through the cooperation of the adjusting rod 10, the adjusting cylinder 13 and the sliding block 14, the grinding disc 5 is aligned with the sealing surface of the high-pressure flange 16, the positioning accuracy is high, the grinding and repairing time is replaced by manual lifting, the labor intensity is reduced, and the repair efficiency is improved; when the repair is completed, the motor 1 is turned off, the adjusting rod 10 is extended inward, the adjusting rod 10 drives the adjusting cylinder 13 to move inward, the adjusting cylinder 13 drives the sliding block 14 to move inward while sliding in the sliding groove 19, the sliding block 14 moves downward while sliding in the sliding groove 19 due to the principle of inclined surface transmission, the sliding block 14 quickly retracts downward under the action of the spring ring 15, and then the sliding block 14 moves away from the inner hole wall surface of the high-pressure flange 16, so that the grinder for the high-pressure flange 16 can be taken out, and the grinding and repairing work is completed.

[0027] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being “connected” to another element, it can be directly connected to the other element or there can be intervening elements. The terms “upper”, “lower”, “left”, “right”, “front”, “rear”, and the like as used herein are for purposes of description only.

[0028] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the preferred embodiments of the present application have been disclosed as above, they are not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change, and equivalent modification of the above embodiments, which does not depart from the technical solution of the present application, and which is based on the technical essence of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A grinder for a high pressure flange (16) characterized by: The utility model provides a high pressure flange grinding device, including support (2), first sleeve (7), second sleeve (8), adjusting rod (10) and slider (14), be equipped with first through -hole and second through -hole on support (2), install motor (1) in first through -hole, first sleeve (7) is inserted in second through -hole, second sleeve (8) is sleeved on first sleeve (7), second sleeve (8) and first sleeve (7) clearance fit, the output of motor (1) is connected with first gear (3), first gear (3) is engaged with second gear (4), second gear (4) is installed on second sleeve (8), second sleeve (8) is installed on the one side of second gear (4) away from motor (1) with grinding disc (5), and the one side of grinding disc (5) away from second gear (4) is the conical surface of high pressure flange (16) sealing surface fit, the sand cloth (6) is attached to the one side of grinding disc (5) away from second gear (4), and the sand cloth (6) is the shape of fit conical surface, first sleeve (7) is sleeved with spring (12), one end of spring (12) and support (2) abut, the other end and second gear (4) abut, first sleeve (7) is inserted with third sleeve (9), third sleeve (9) is equipped with sliding slot (19) on the one end away from motor (1), and the inner side of sliding slot (19) is inclined plane, adjusting rod (10) is inserted in third sleeve (9), adjusting rod (10) is close to the one end of sliding slot (19) and stretches out third sleeve (9), adjusting rod (10) is close to the one end of sliding slot (19) and is connected with adjusting cylinder (13), and sliding slot (19) is housed in adjusting cylinder (13), adjusting cylinder (13) is equipped with third through -hole, slider (14) passes through third through -hole and is slidably connected with sliding slot (19), slider (14) can be housed in the inner hole of high pressure flange (16), the recess is equipped on slider (14), spring ring (15) is sleeved on the outside of slider (14), and slider (14) and adjusting cylinder (13) are housed in the inner hole of spring ring (15), and the part of spring ring (15) close to slider (14) is housed in recess.

2. A grinder for high-pressure flanges (16) according to claim 1, characterized in that: The one end outer wall of adjusting rod (10) away from adjusting cylinder (13) is equipped with first external thread, and adjusting nut (11) is sleeved on first external thread.

3. A grinder for high pressure flanges (16) according to claim 1, characterized in that: Second sleeve (8) is equipped with second external thread on the outside, second gear (4) is equipped with fourth through -hole, fourth through -hole is equipped with first internal thread, and second sleeve (8) is threadedly connected with fourth through -hole, grinding disc (5) is equipped with fifth through -hole, and fifth through -hole is equipped with second internal thread, and second sleeve (8) is threadedly connected with fifth through -hole, lock nut (20) is sleeved on second sleeve (8), and sand cloth (6) is fixed on grinding disc (5) through lock nut (20).

4. A grinder for high-pressure flanges (16) according to claim 3, characterized in that: The contact surface of the lock nut (20) and the abrasive cloth (6) is in the shape of the conical surface.

5. The grinder for high-pressure flanges (16) according to claim 1, characterized in that: The motor (1) is fixed in the first through hole by a first screw (17).

6. A grinder for high pressure flanges (16) according to claim 1, characterized in that: The first sleeve (7) is fixed in the second through hole by a second screw (18).

7. A grinder for high pressure flanges (16) according to claim 1, characterized in that: The adjusting cylinder (13) is provided with a plurality of third through holes, each of which contains the sliding block (14), and each of the plurality of sliding blocks (14) is located in the inner hole of the spring ring (15).

8. The grinder for high-pressure flanges (16) according to claim 1, characterized in that: The sliding block (14) is provided with a plurality of grooves, each of which contains the spring ring (15).

9. The grinder for high-pressure flanges (16) according to claim 1, characterized in that: The sliding block (14) is parallel to the inner hole wall surface of the high-pressure flange (16) on one side close to the inner hole wall of the high-pressure flange (16).

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