Ball valve seat grinding device

Abstract

The invention discloses a ball valve seat grinding device which comprises an equipment body, grinding arms and grinding discs, the two grinding arms are both installed on the surface of the equipment body, the grinding discs are fixedly installed on the surfaces of the grinding arms, a valve seat to be ground is arranged between the two grinding discs, and a first motor is fixedly installed on the surface of the equipment body. An output shaft of the first motor is fixedly connected with a screw rod, the surface of the screw rod is in threaded connection with a threaded sleeve, the surface of the first motor is fixedly connected with a supporting arm, the supporting arm is fixedly connected with an annular frame, the annular frame is fixedly connected with three first guide frames, and the three first guide frames are all sleeved with positioning plates; one end of each positioning plate is welded with a tilting plate, the surface of the threaded sleeve is fixedly connected with three supports, and the threaded sleeve is provided with a sliding groove. The ball valve seat grinding device can adapt to ball valve seats of different specifications and sizes, a fixing mechanism does not need to be replaced in the using process, and the using cost of the grinding device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a ball valve seat grinding device. Background Art

[0002] As a fluid control device, ball valves are widely used in petroleum, chemical, electric power, metallurgy and other industries. The sealing performance of ball valves directly affects its use effect, and the sealing surface of the valve seat is the key part affecting the sealing performance. Therefore, in the production process of ball valves, grinding devices are needed to precisely grind the valve seat to ensure the flatness and smoothness of its sealing surface.

[0003] When using a grinding device to grind the ball valve seat, it is necessary to use a fixing mechanism to pass through the through hole in the middle of the ball valve seat to fix the ball valve seat, and then use the grinding arm to drive and move the grinding plate to achieve grinding of the ball valve seat surface. However, when facing ball valve seats of different specifications and sizes, the through hole sizes on the ball valve seat are also different. Therefore, the existing grinding device is difficult to adapt to ball valve seats of different specifications and sizes. The fixing mechanism of the grinding device needs to be replaced frequently during use, which makes the grinding device inconvenient to use and increases the cost of use. Summary of the invention

[0004] The object of the present invention is to provide a ball valve seat grinding device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a ball valve seat grinding device, comprising an equipment body, a grinding arm and a grinding disc, two of the grinding arms are installed on the surface of the equipment body, the grinding disc is fixedly installed on the surface of the grinding arm, a valve seat to be ground is arranged between the two grinding discs, a first motor is fixedly installed on the surface of the equipment body, a screw is fixedly connected to the output shaft of the first motor, a threaded sleeve is threadedly connected to the surface of the screw, a support arm is fixedly connected to the surface of the first motor, an annular frame is fixedly connected to the support arm, three first guide frames are fixedly connected to the annular frame, the three first guide frames are all sleeved with positioning plates, one end of the three positioning plates are welded with a tilting plate, three supports are fixedly connected to the surface of the threaded sleeve, a slide groove is provided on the threaded sleeve, a guide arm is slidably connected to the inside of the slide groove, and the three guide arms are fixedly connected to the first motor.

[0006] As a preferred technical solution of the present invention, one end of the three positioning plates close to each other is fixedly connected to a center column, the surface of the center column is fixedly connected to three first springs, and one end of the three first springs is fixedly connected to the surfaces of the three positioning plates respectively.

[0007] As a preferred technical solution of the present invention, a sphere is disposed in each of the three supports, and the sphere and the supports form a ball-and-socket mechanism.

[0008] As a preferred technical solution of the present invention, a water storage tank is provided on the equipment body, a water pump is fixedly installed inside the water storage tank, the input end of the water pump is connected to a water inlet pipe, the output end of the water pump is connected to a water supply hose, and the water supply end of the water supply hose is connected to an arc nozzle.

[0009] As a preferred technical solution of the present invention, a water retaining net is provided on the arc-shaped nozzle.

[0010] As a preferred technical solution of the present invention, a rotating plate is fixedly connected to the arc-shaped nozzle, a supporting column is fixedly connected to the bottom of the water storage tank, the top of the supporting column is rotatably connected to a rotating shaft, the top of the supporting column is rotatably connected to the rotating plate via the rotating shaft, a transmission gear is fixedly connected to the rotating shaft, a second motor is fixedly installed on the supporting column, a half gear is fixedly connected to the output shaft of the second motor, and the half gear is meshed with the transmission gear.

[0011] As a preferred technical solution of the present invention, second support frames are fixedly connected to both sides of the top of the support column, second support frames are fixedly connected to second springs, and two second springs are fixedly connected to both sides of the rotating plate respectively.

[0012] As a preferred technical solution of the present invention, a first support frame is fixedly connected between the two grinding arms, a second guide frame is inserted in the middle of the first support frame, two arms of the second guide frame are fixedly connected with an arc plate, and a water wiper is fixedly connected to the arc plate.

[0013] As a preferred technical solution of the present invention, a third spring is fixedly connected between the arc plate and the first support frame, the two ends of the third spring are respectively fixedly connected to the first support frame and the arc plate, the bottom of the water storage tank is connected to a drain pipe, and a water plug is provided at the water outlet end of the drain pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention fixes valve seats of different sizes to be ground by making three positioning plates close to the inner wall of the through hole on the valve seat to be ground, so as to adapt to ball valve seats of different sizes, without the need to replace the fixing mechanism during use, thereby reducing the use cost of the grinding device.

[0015] 2. The present invention can flush the dust on the surface of the valve seat to be ground by spraying water, so as to prevent the surface of the valve seat to be ground from being contaminated by dust. During the grinding process, the friction between the dust and the surface of the valve seat to be ground will cause scratches, thus affecting the processing quality of the valve seat to be ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic structural diagram of the grinding arm of the present invention; Figure 3 It is a structural schematic diagram of the screw part of the present invention; Figure 4 It is a structural schematic diagram of the positioning plate part of the present invention; Figure 5 It is a structural schematic diagram of the water storage tank part of the present invention; Figure 6 It is a schematic structural diagram of the water pump part of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 It is a schematic structural diagram of the arc plate part of the present invention.

[0017] In the figure: 1, equipment body; 2, grinding arm; 3, grinding disc; 4, valve seat to be ground; 501, first motor; 502, tilting plate; 503, support arm; 504, slide; 505, support; 506, ball; 507, support arm; 508, ring frame; 509, positioning plate; 510, first guide frame; 511, first spring; 512, center column; 513, screw; 514, threaded sleeve; 515, guide arm; 601, drain pipe; 602, water blocking Plug; 603, water storage tank; 604, water pump; 605, first support frame; 606, arc nozzle; 607, water retaining net; 608, support column; 609, water hose; 610, rotating plate; 611, water inlet pipe; 612, second support frame; 613, second spring; 614, transmission gear; 615, rotating shaft; 616, half gear; 617, second motor; 618, second guide frame; 619, arc plate; 620, water wiping wipe; 621, third spring. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-8 The present invention provides a technical solution for a ball valve seat grinding device: according to Figure 1-Figure 4As shown, a ball valve seat grinding device comprises an equipment body 1, a grinding arm 2 and a grinding disc 3, wherein the two grinding arms 2 are mounted on the surface of the equipment body 1, the grinding disc 3 is fixedly mounted on the surface of the grinding arm 2, a valve seat 4 to be ground is arranged between the two grinding discs 3, a first motor 501 is fixedly mounted on the surface of the equipment body 1, a screw 513 is fixedly connected to the output shaft of the first motor 501, a threaded sleeve 514 is threadedly connected to the surface of the screw 513, and the screw 513 can drive the threaded sleeve 514 to move, a support arm 507 is fixedly connected to the surface of the first motor 501, an annular frame 508 is fixedly connected to the support arm 507, three first guide frames 510 are fixedly connected to the annular frame 508, and positioning plates 509 are sleeved on the three first guide frames 510, so that the three positioning plates 509 are tightly attached to the inner wall of the through hole on the valve seat 4 to be ground, so as to realize the fixing of valve seats 4 to be ground of different specifications and sizes; Among them, one end of the three positioning plates 509 is welded with a tilting plate 502, three supports 505 are fixedly connected to the surface of the threaded sleeve 514, a slide groove 504 is opened on the threaded sleeve 514, and a guide arm 515 is slidably connected inside the slide groove 504, and the three guide arms 515 are fixedly connected to the first motor 501, and one end of the three positioning plates 509 close to each other is fixedly connected to a center column 512, and the surface of the center column 512 is fixedly connected to three first springs 511, through the first spring 511, the three positioning plates 509 can always fit with the surfaces of the three spheres 506, one end of the three first springs 511 is fixedly connected to the surfaces of the three positioning plates 509 respectively, and the three supports 505 are provided with spheres 506, and the spheres 506 can reduce the wear on the tilting plate 502 and increase the service life of the tilting plate 502, and the spheres 506 and the supports 505 form a ball-and-socket mechanism.

[0020] During specific use, the valve seat 4 to be ground is set on three positioning plates 509, and then the screw 513 is driven to rotate by the first motor 501, and the screw 513 can be used to drive the threaded sleeve 514 to move, so that the support 505 on the threaded sleeve 514 can squeeze the tilting plate 502, and then the three positioning plates 509 are moved away from each other, so that the three positioning plates 509 are tightly attached to the inner wall of the through hole on the valve seat 4 to be ground, so as to achieve the fixation of valve seats 4 to be ground of different specifications and sizes.

[0021] according to Figure 5-Figure 8As shown, the equipment body 1 is provided with a water storage tank 603, and a water pump 604 is fixedly installed inside the water storage tank 603. The input end of the water pump 604 is connected to a water inlet pipe 611, and the output end of the water pump 604 is connected to a water delivery hose 609. The water delivery end of the water delivery hose 609 is connected to an arc-shaped nozzle 606. Water is delivered to the arc-shaped nozzle 606 and sprayed out, and the dust on the surface of the valve seat 4 to be ground can be washed by the sprayed water flow. The arc-shaped nozzle 606 is provided with a water retaining net 607, which can prevent water from being sprayed directly, so that the water can be sprayed out more evenly; The arc-shaped nozzle 606 is fixedly connected with a rotating plate 610, the bottom of the water storage tank 603 is fixedly connected with a support column 608, the top of the support column 608 is rotatably connected with a rotating shaft 615, the top of the support column 608 is rotatably connected with the rotating plate 610 through the rotating shaft 615, the rotating shaft 615 is fixedly connected with a transmission gear 614, a second motor 617 is fixedly installed on the support column 608, the output shaft of the second motor 617 is fixedly connected with a half gear 616, the half gear 616 is meshed with the transmission gear 614, the two sides of the top of the support column 608 are fixedly connected with second support frames 612, the second support frames 612 are fixedly connected with second springs 613, and the two second springs 613 are respectively fixedly connected with the two sides of the rotating plate 610; Among them, a first support frame 605 is fixedly connected between the two grinding arms 2, a second guide frame 618 is inserted in the middle of the first support frame 605, and the two support arms 503 of the second guide frame 618 are fixedly connected with an arc plate 619, and a water wiper 620 is fixedly connected to the arc plate 619. A third spring 621 is fixedly connected between the arc plate 619 and the first support frame 605, and the water wiper 620 can be pushed to fit the surface of the valve seat 4 to be ground by the third spring 621. The two ends of the third spring 621 are fixedly connected to the first support frame 605 and the arc plate 619 respectively. The bottom of the water storage tank 603 is connected to a drain pipe 601, and sewage can be discharged through the drain pipe 601. A water plug 602 is provided at the water outlet end of the drain pipe 601.

[0022] During specific use, before processing the valve seat 4 to be ground, the fixation of the valve seat 4 to be ground is loosened, the valve seat 4 to be ground is rotated, and water is transported to the arc nozzle 606 through the water pump 604 and sprayed out, so that the dust on the surface of the valve seat 4 to be ground can be washed away by the sprayed water flow, and during the washing process, the half gear 616 and the transmission gear 614 are driven to rotate by the second motor 617, so that the rotation of the arc nozzle 606 can be realized, and when the half gear 616 is no longer engaged with the transmission gear 614, the arc nozzle 606 can be driven to return to its original position by the second spring 613, and the swing of the arc nozzle 606 can be realized in this reciprocating manner, thereby reducing the blind angle of washing the valve seat 4 to be ground, and after the washing is completed, the valve seat 4 to be ground continues to be rotated, and the water stains and stains on the surface of the valve seat 4 to be ground can be cleaned by the water wiper 620.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ball valve seat grinding device, comprising a device body (1), a grinding arm (2) and a grinding disc (3), wherein the two grinding arms (2) are mounted on the surface of the device body (1), the grinding disc (3) is fixedly mounted on the surface of the grinding arm (2), and a valve seat (4) to be ground is arranged between the two grinding discs (3), characterized in that: A first motor (501) is fixedly mounted on the surface of the device body (1); a screw rod (513) is fixedly connected to the output shaft of the first motor (501); a threaded sleeve (514) is threadedly connected to the surface of the screw rod (513); a support arm (507) is fixedly connected to the surface of the first motor (501); a ring frame (508) is fixedly connected to the support arm (507); three first guide frames (510) are fixedly connected to the ring frame (508); a positioning plate (509) is sleeved on the three first guide frames (510); one end of each of the three positioning plates (509) is welded with a tilting plate (502); three supports (505) are fixedly connected to the surface of the threaded sleeve (514); a sliding groove (504) is provided on the threaded sleeve (514); a guide arm (515) is slidably connected to the interior of the sliding groove (504); and the three guide arms (515) are fixedly connected to the first motor (501).

2. A ball valve seat grinding device according to claim 1, characterized in that: One end of the three positioning plates (509) close to each other is fixedly connected to a central column (512), the surface of the central column (512) is fixedly connected to three first springs (511), and one end of the three first springs (511) is fixedly connected to the surfaces of the three positioning plates (509) respectively.

3. A ball valve seat grinding device according to claim 1, characterized in that: A sphere (506) is disposed in each of the three supports (505), and the sphere (506) and the supports (505) form a ball-and-socket mechanism.

4. A ball valve seat grinding device according to claim 1, characterized in that: The device body (1) is provided with a water storage tank (603), a water pump (604) is fixedly installed inside the water storage tank (603), the input end of the water pump (604) is connected to a water inlet pipe (611), the output end of the water pump (604) is connected to a water delivery hose (609), and the water delivery end of the water delivery hose (609) is connected to an arc-shaped nozzle (606).

5. A ball valve seat grinding device according to claim 4, characterized in that: The arc-shaped nozzle (606) is provided with a water retaining net (607).

6. A ball valve seat grinding device according to claim 4, characterized in that: A rotating plate (610) is fixedly connected to the arc-shaped nozzle (606), a supporting column (608) is fixedly connected to the bottom of the water storage tank (603), a rotating shaft (615) is rotatably connected to the top of the supporting column (608), the top of the supporting column (608) is rotatably connected to the rotating plate (610) via the rotating shaft (615), a transmission gear (614) is fixedly connected to the rotating shaft (615), a second motor (617) is fixedly mounted on the supporting column (608), an output shaft of the second motor (617) is fixedly connected to a half gear (616), and the half gear (616) is meshed with the transmission gear (614).

7. A ball valve seat grinding device according to claim 6, characterized in that: Both sides of the top of the support column (608) are fixedly connected to a second support frame (612), the second support frame (612) is fixedly connected to a second spring (613), and the two second springs (613) are respectively fixedly connected to the two sides of the rotating plate (610).

8. A ball valve seat grinding device according to claim 4, characterized in that: A first support frame (605) is fixedly connected between the two grinding arms (2); a second guide frame (618) is inserted into the middle of the first support frame (605); two support arms (503) of the second guide frame (618) are fixedly connected to an arc plate (619); and a water wiper (620) is fixedly connected to the arc plate (619).

9. A ball valve seat grinding device according to claim 8, characterized in that: A third spring (621) is fixedly connected between the arc-shaped plate (619) and the first support frame (605); two ends of the third spring (621) are fixedly connected to the first support frame (605) and the arc-shaped plate (619), respectively; the bottom of the water storage tank (603) is connected to a drainage pipe (601); a water plug (602) is provided at the water outlet end of the drainage pipe (601).

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