Grinding equipment for sealing surface of valve plate

Abstract

The utility model discloses grinding equipment for a sealing surface of a valve plate. The valve plate sealing face grinding equipment comprises a power mechanism, a fixing ring, a supporting frame, a connector and grinding abrasive paper, the grinding abrasive paper is fixed to the bottom face of the fixing ring and used for grinding a valve plate sealing face, the top face of the fixing ring is fixed to the supporting frame, the supporting frame is used for increasing the strength of the fixing ring, and the connector is used for connecting the fixing ring with the supporting frame. The connector is fixed to the supporting frame and detachably connected to an output shaft of the power mechanism, the power mechanism is used for driving the connector to rotate, the connector rotates to drive the supporting frame, the supporting frame rotates to drive the fixing ring to rotate, and the fixing ring rotates to drive the grinding abrasive paper to rotate. And the grinding abrasive paper rotates to grind the sealing surface of the valve plate. The valve plate sealing surface grinding equipment can adapt to grinding of valve plate sealing surfaces with different diameters by replacing the fixing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of gate plate repair, in particular to a valve plate sealing surface grinding device. Background Art

[0002] In the gate valve repair process, the grinding process of the sealing surface between the gate plate and the valve seat is the most important. The size of the grinding plate of conventional grinding equipment is fixed, and valve plates of other specifications cannot be repaired. The only option is to replace or re-purchase the equipment, which is costly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a valve plate sealing surface grinding device which can conveniently replace the grinding diameter.

[0004] In order to solve the above problems, the utility model provides a valve plate sealing surface grinding device, which includes a power mechanism, a fixed ring, a support frame, a connecting head and grinding sandpaper, the grinding sandpaper is fixed to the bottom surface of the fixed ring, the grinding sandpaper is used to grind the valve plate sealing surface, the top surface of the fixed ring is fixed to the support frame, the support frame is used to increase the strength of the fixed ring, the connecting head is fixed on the support frame, the connecting head is detachably connected to the output shaft of the power mechanism, the power mechanism is used to drive the connecting head to rotate, the rotation of the connecting head drives the support frame, the rotation of the support frame drives the fixed ring to rotate, the rotation of the fixed ring drives the grinding sandpaper to rotate, and the rotation of the grinding sandpaper grinds the valve plate sealing surface.

[0005] Furthermore, the connecting head includes a connecting plate, a positioning rod and a locking bolt. The connecting plate is fixed on the support frame. A receiving hole is provided in the middle of the connecting plate. The output shaft of the power mechanism extends into the receiving hole. The positioning rod is fixed on the connecting plate. The positioning rod is used to position the output shaft of the power mechanism. The locking bolt is passed through the connecting plate. The locking bolt passes through the receiving hole. At the same time, the locking bolt is passed through the output shaft of the power mechanism.

[0006] Furthermore, the output shaft is provided with a positioning groove for cooperating with the positioning rod and a locking hole for cooperating with the locking bolt.

[0007] Furthermore, the fixing ring is a fixing ring.

[0008] Furthermore, the support frame is in a cross shape.

[0009] Furthermore, the power mechanism adopts a drilling machine, and the rotating rod of the drilling machine is used as the output shaft.

[0010] Furthermore, it also includes a mounting plate, the grinding sandpaper is fixed on the mounting plate, the mounting plate is provided with a positioning column, the positioning column is inserted into a fixing ring, a locking pin is provided on the fixing ring, and the locking pin is used to lock the positioning column.

[0011] Furthermore, the locking pin is connected to a handle and a reset spring, the mounting plate is provided with a mounting hole, the reset spring is sleeved on the handle, the reset spring is located in the mounting hole, a plug is provided in the mounting hole, the plug is used to seal the spring, and the handle passes through the plug to the outside of the fixed ring.

[0012] Furthermore, the handle includes a connecting rod and a grip, the grip is screwed on the connecting rod, and the connecting rod is connected to the locking pin.

[0013] Furthermore, the handle is in an M shape.

[0014] The connecting head of the valve plate sealing surface grinding equipment of the utility model adopts a detachable connection, which is convenient for replacing fixing rings, grinding sandpaper and supporting frames of different sizes. Corresponding selections can be made according to valve plates of different sizes, so that different grinding diameters can be met without replacing the entire equipment, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a preferred implementation mode of the valve plate sealing surface grinding device of the utility model.

[0016] Figure 2 It is a transverse sectional view of the valve plate sealing surface grinding device of the utility model.

[0017] Figure 3 It is a longitudinal sectional view of the valve plate sealing surface grinding device of the utility model.

[0018] Figure 4 It is a top view of the fixing ring.

[0019] Figure 5 It is a structural schematic diagram in which the locking pin is installed in the fixing ring.

[0020] Figure 6 It is a schematic diagram of the structure of the handle.

[0021] The meanings of the symbols in the accompanying drawings are:

[0022] Output shaft 1, positioning groove 11, fixing ring 2, support frame 3, connector 4, connecting plate 41, accommodating hole 411, positioning rod 42, locking bolt 43, grinding sandpaper 5, mounting plate 61, positioning column 611, locking pin 62, return spring 63, handle 64, connecting rod 641, grip 642, plug 65. DETAILED DESCRIPTION

[0023] The utility model will be further described below in conjunction with the accompanying drawings.

[0024] Embodiment 1

[0025] like Figures 1 to 4 As shown, the preferred embodiment of the valve plate sealing surface grinding device of the utility model includes a power mechanism, a fixing ring 2, a support frame 3, a connector 4 and abrasive paper 5. The fixing ring 2 is a circular ring, and the fixing ring 2 is a steel ring. The ring shape can reduce the weight of the fixing ring 2. The abrasive paper 5 is fixed on the fixing ring 2, and the abrasive paper 5 is used to grind the valve plate sealing surface. It is usually adhered to the bottom surface of the fixing ring 2 by glue or other adhesives. The fixing ring 2 is fixed on the support frame 3 by welding. The support frame 3 is used to increase the strength of the fixing ring 2. The support frame 3 is located on the top surface of the fixing ring 2, which is convenient for welding the support frame 3. Of course, bolts or other conventional connection methods can also be used to connect with the support frame 3; the support frame 3 is cross-shaped, and its cross layout provides good spatial stability, can resist external forces in multiple directions, thereby improving the stability of the overall structure, and can effectively disperse the load, so that the force is evenly distributed in the structure, improving the bearing capacity of the structure, increasing the rigidity and strength of the structure, and the structure is simple and low in cost. In other embodiments, the support frame 3 can also be fixed on the inner wall of the fixing ring 2. The lower end of the connector 4 is fixed on the support frame 3, and the upper end of the connector 4 is detachably connected to the output shaft 1 of the power mechanism, so as to facilitate the replacement of the fixing ring 2 and the grinding sandpaper 5 of different diameters to adapt to the grinding of the valve plate sealing surface of different diameters. The connector 4 connects the support frame 3 and the power mechanism, and the power mechanism is used to drive the connector 4 to rotate. In order to save costs, the original drilling machine of the factory can be used, and the drill rod of the drilling machine is used for the output shaft 1. When grinding is required, the connector 4 rotates to drive the support frame 3, the support frame 3 rotates to drive the fixing ring 2 to rotate, the fixing ring 2 rotates to drive the grinding sandpaper 5 to rotate, and the grinding sandpaper 5 rotates to grind the valve plate sealing surface.

[0026] The output shaft 1 is provided with a positioning groove 11 and a locking hole, and both the positioning groove 11 and the locking hole are used to cooperate with the connector 4 .

[0027] The connector 4 includes a connecting plate 41, a positioning rod 42 and a locking bolt 43. The connecting plate 41 is welded and fixed to the middle of the support frame 3. Of course, it can also be connected and fixed to the support frame 3 by other conventional methods such as bolts. The connecting plate 41 has a receiving hole 411 in the middle, and the receiving hole 411 is used to provide an escape space for the output shaft 1 of the power mechanism, that is, the output shaft 1 of the power mechanism extends into the receiving hole 411. The positioning rod 42 is fixed on the connecting plate 41, and the positioning rod 42 is used to cooperate with the positioning groove 11 of the output shaft 1, that is, the positioning rod 42 is located in the positioning groove 11, so that the positioning rod 42 positions the output shaft 1 of the power mechanism, ensuring that the connecting head 4 and the output shaft 1 rotate synchronously, and at the same time, the connecting head 4 can be quickly positioned, which is convenient for installing the locking bolt 43. The locking bolt 43 is penetrated on the connecting plate 41, and the locking bolt 43 passes through the receiving hole 411. At the same time, the locking bolt 43 is penetrated in the locking hole of the output shaft 1 of the power mechanism to connect and fix the connecting head 4 and the output shaft 1.

[0028] When in use, the output shaft 1 drives the connector 4 to rotate, and the connector 4 drives the fixed ring 2 and the grinding sandpaper 5 to rotate, thereby grinding the sealing surface of the valve disc. If different diameters need to be ground, just remove the locking bolt 43, and then fix the fixed ring 2 and the connector 4 of the corresponding diameter size on the output shaft 1 through the locking bolt 43. The connector 4 and the output shaft 1 are detachably connected, which is convenient for replacing fixed rings 2, grinding sandpaper 5 and support frames 3 of different sizes. They can be selected according to valve plates of different sizes, so that different grinding diameters can be met without replacing the entire equipment, reducing costs. In addition, the fixed ring 2, support frame 3, connector 4 and positioning rod 42 have simple structures and are all made of steel, which is low in cost. The factory can prepare them by itself, which can greatly reduce the cost of equipment, and even the cost of spare fixed rings 2 of multiple diameters is not high.

[0029] Embodiment 2

[0030] like Figure 5 and Figure 6 As shown, this embodiment is different from the first embodiment in that it also includes a mounting plate 61, the grinding sandpaper 5 is fixed on the mounting plate 61, a positioning column 611 is provided on the mounting plate 61, the positioning column 611 is inserted into the positioning hole of the fixing ring 2, and a locking pin 62 is provided on the fixing ring 2, and the locking pin 62 is used to lock the positioning column 611.

[0031] Specifically, the mounting plate 61 is provided with a mounting hole, and the mounting hole is used to install the lock pin 62, that is, the lock pin 62 is arranged in the mounting hole, and the mounting hole is also provided with a handle 64 and a reset spring 63, and the reset spring 63 is sleeved on the handle 64, and the handle 64 is connected to the lock pin 62, and the handle 64 is used to pull the lock pin 62, and the reset spring 63 is used to reset the lock pin 62, and the mounting hole is sealed by a plug 65, that is, the plug 65 forms a closed space for the mounting hole, ensuring that the lock pin 62 and the spring in the mounting hole will not fall out of the mounting hole. One end of the reset spring 63 abuts on the lock pin 62, and the other end of the reset spring 63 abuts on the plug 65, and the plug 65 is provided with a through hole, and the outer end of the handle 64 passes through the through hole and is located outside the mounting plate 61, so as to facilitate pulling the handle 64. The positioning column 611 is provided with a hole, and the locking pin 62 is inserted into the hole to fix the positioning column 611. When the locking pin 62 is separated from the hole of the positioning column 611, the locking of the positioning column 611 is released, so that the mounting plate 61 can be removed from the fixing ring 2. When installing the mounting plate 61, it is only necessary to directly insert the positioning column 611 on the mounting plate 61 into the positioning hole in the fixing ring 2. After the positioning column 611 moves in the positioning hole and contacts the locking pin 62, the positioning column 611 continues to move upward to push the locking pin 62 outward, and the locking pin 62 directly overlaps with the hole on the positioning column 611. The locking pin 62 is directly inserted into the hole to fix the positioning column 611, and the connection between the mounting plate 61 and the fixing ring 2 is completed. When the mounting plate 61 needs to be removed, the handle 64 is pulled to separate the locking pin 62 from the positioning column 611, so that the mounting plate 61 can be removed from the fixing ring 2. It is convenient to disassemble and assemble, and different grinding sandpapers 5 can be replaced according to different grinding needs.

[0032] The handle 64 includes a connecting rod 641 and a grip 642. The grip 642 is screwed onto the connecting rod 641. The connecting rod 641 is connected to the locking pin 62. The connecting rod 641 can easily connect the locking pin 62 and the handle 64. The grip 642 is M-shaped, so that when the grip 642 contacts the fixing ring 2, there is space for fingers to pass through, making it convenient to pull the grip 642.

[0033] The front end of the locking pin 62 has an inclined surface to ensure that the positioning column 611 can push the locking pin 62. The top of the locking pin 62 is rounded to facilitate the positioning column 611 to push the locking pin 62.

[0034] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure made using the contents of the specification and drawings of the present utility model, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present utility model.

Claims

1. A valve plate sealing surface grinding device, Features: It includes a power mechanism, a fixed ring, a support frame, a connecting head and grinding sandpaper, wherein the grinding sandpaper is fixed to the bottom surface of the fixed ring, the grinding sandpaper is used to grind the valve plate sealing surface, the top surface of the fixed ring is fixed to the support frame, the support frame is used to increase the strength of the fixed ring, the connecting head is fixed to the support frame, the connecting head is detachably connected to the output shaft of the power mechanism, the power mechanism is used to drive the connecting head to rotate, the rotation of the connecting head drives the support frame, the rotation of the support frame drives the fixed ring to rotate, the rotation of the fixed ring drives the grinding sandpaper to rotate, and the rotation of the grinding sandpaper grinds the valve plate sealing surface.

2. The valve plate sealing surface grinding device according to claim 1, Features: The connecting head includes a connecting plate, a positioning rod and a locking bolt. The connecting plate is fixed on the supporting frame. A receiving hole is provided in the middle of the connecting plate. The output shaft of the power mechanism extends into the receiving hole. The positioning rod is fixed on the connecting plate. The positioning rod is used to position the output shaft of the power mechanism. The locking bolt is passed through the connecting plate. The locking bolt passes through the receiving hole. At the same time, the locking bolt is passed through the output shaft of the power mechanism.

3. The valve plate sealing surface grinding device according to claim 1, Features: The output shaft is provided with a positioning groove for cooperating with the positioning rod and a locking hole for cooperating with the locking bolt.

4. The valve plate sealing surface grinding device according to claim 1, Features: The fixing ring is a fixing ring.

5. The valve plate sealing surface grinding device according to claim 1, Features: The support frame is in a cross shape.

6. The valve plate sealing surface grinding device according to claim 1, Features: The power mechanism adopts a drilling machine, and the rotating rod of the drilling machine is used as the output shaft.

7. The valve plate sealing surface grinding device according to any one of claims 1 to 6, Features: It also includes a mounting plate, the grinding sandpaper is fixed on the mounting plate, a positioning column is arranged on the mounting plate, the positioning column is inserted into a fixing ring, a locking pin is arranged on the fixing ring, and the locking pin is used to lock the positioning column.

8. The valve plate sealing surface grinding device according to claim 7, Features: The locking pin is connected with a handle and a reset spring, the mounting plate is provided with a mounting hole, the reset spring is sleeved on the handle, the reset spring is located in the mounting hole, a plug is provided in the mounting hole, the plug is used to seal the spring, and the handle passes through the plug to the outside of the fixing ring.

9. The valve plate sealing surface grinding device according to claim 8, Features: The handle comprises a connecting rod and a grip, wherein the grip is screwed onto the connecting rod, and the connecting rod is connected to the locking pin.

10. The valve plate sealing surface grinding device according to claim 9, Features: The handle is in an M shape.

Images