CN111958475A

CN111958475A - Large-scale valve body grinds machine

Info

Publication number: CN111958475A
Application number: CN202010783458.4A
Authority: CN
Inventors: 史少忠
Original assignee: Ningxia Craftsman Machinery Manufacturing Co ltd
Current assignee: Ningxia Craftsman Machinery Manufacturing Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2020-11-20

Abstract

A large valve body grinding machine comprises a frame, a control cabinet, a workpiece device, a rotary grinding bracket and a grinding device; a workbench is fixedly arranged at the top of the rack, and a workpiece base and a bracket base are arranged on the workbench; the workpiece device consists of a workpiece rotating shaft, a control transmission device and a workpiece fixing disc; the rotary grinding support consists of a rotary upright post, an upright post transmission device and a cantilever; the cantilever is arranged in parallel with the workbench, a grinding shaft slot is formed along the length direction, and grinding guide rails are fixedly arranged along two sides of the grinding shaft slot; the grinding device consists of a sliding frame, a sliding frame driving device, a grinding transmission device and a grinding power motor, wherein the sliding frame is arranged on a grinding guide rail of the cantilever in a matching way, the sliding frame driving device is fixedly arranged on the cantilever, and the grinding transmission device and the grinding power motor are fixedly arranged on the sliding frame; the valve body grinding and repairing device has the beneficial effects that the efficiency and the precision of the valve body grinding and repairing operation are greatly improved, and the repairing cost is reduced.

Description

Large-scale valve body grinds machine

Technical Field

The invention belongs to the technical field of machining, and particularly relates to grinding equipment for a large valve body.

Background

The valve body is indispensable pipeline equipment on the industrial conveying pipeline, and common valve body has multiple types such as gate valve, stop valve, butterfly valve, ball valve, and its effect is the circulation of control conveying pipeline through the steerable sealing mechanism who opens of valve body, so to require very strict to its sealing performance, especially involve comparatively dangerous trades such as chemical industry, the valve body is revealed and can be caused the loss of difficult imagination.

In the pipeline conveying process, along with the increase of the working time and the increase of the opening and closing times of the valve body, the sealing mechanism with the sealing function in the valve body has the problems of abrasion and erosion, so that the sealing grade is reduced, the working requirement standard cannot be met, and the valve body has to be replaced or repaired in time for maintenance. In the actual production process, the general size of the large valve body is more than 500mm, taking a ball valve as an example, the diameter is 600 + 700, the maximum diameter is even more than 1000mm, the larger the specification is, the higher the cost is, in order to reduce the maintenance cost, the grinding and repairing of the sealing surface of the valve body are generally preferred, compared with the replacement of a new valve body, the repairing cost is low, and the production cost can be effectively reduced.

The difficulty of the existing valve body repairing work is that different valve body sealing structures are different, for example, a ball valve is sealed by a spherical surface, a gate valve is sealed by a plate surface, and the structure is sealed by a ring surface, different repairing means are adopted for different valve bodies, such as a clamp device, a grinding tool and the like, different operators are often required to be found for repairing, and therefore the maintenance cost is high. In addition, most of the existing repairing means are manual polishing repairing, repairing quality is controlled by manual experience auxiliary detection, and the repaired quality is unstable.

Disclosure of Invention

The invention aims to solve the problems of single grinding and repairing operation means and high repairing cost of various large valve body sealing surfaces, and provides a grinding machine special for grinding and repairing various large valve bodies.

In order to achieve the purpose, the technical scheme adopted by the invention is that a solid device and a grinding device of a valve body are configured according to the sealing structure and the type of the valve body, a rotary grinding support for controlling and adjusting the working position of the grinding device is arranged according to a grinding working mode, a rack working table is arranged through the solid device, the grinding device and the rotary grinding support of the valve body, a control cabinet is configured, and the fine quantitative grinding operation of a grinding tool on the sealing structure of the valve body is realized through the transmission control of a precise mechanical structure, so that the high-efficiency precise repair of the valve body is realized.

The invention relates to a large valve body grinding machine which comprises a rack, a control cabinet, a workpiece device, a rotary grinding support and a grinding device, wherein the rack is provided with a plurality of grinding holes; a workbench is fixedly arranged at the top of the rack, and a workpiece base and a bracket base are arranged on the workbench; the workpiece device consists of a workpiece rotating shaft, a control transmission device and a workpiece fixing disc, the workpiece rotating shaft is installed on the workpiece base in a matched mode, the control transmission device is fixedly installed on the rack below the workpiece base, the control transmission device is installed in a transmission matched mode with the lower end of the workpiece rotating shaft, and the workpiece fixing disc is fixedly installed at the top of the workpiece rotating shaft; the rotary grinding support consists of a rotary upright post, an upright post transmission device and a cantilever, wherein the rotary upright post is installed on a support base in a matched mode, the upright post transmission device is fixedly installed on a rack below the support base, the upright post transmission device is installed in a transmission matched mode with the lower end of the rotary upright post, and the cantilever is fixedly installed at the top end of the rotary upright post; the cantilever is arranged in parallel with the workbench, a grinding shaft slot is formed along the length direction, and grinding guide rails are fixedly arranged along two sides of the grinding shaft slot; the grinding device consists of a sliding frame, a sliding frame driving device, a grinding transmission device and a grinding power motor, wherein the sliding frame is arranged on a grinding guide rail of the cantilever in a matching way; the sliding frame driving device is provided with a telescopic rod capable of driving the sliding frame to stretch, and is fixedly connected with the sliding frame through the telescopic rod; the grinding transmission device is provided with a grinding shaft, extends out of a grinding shaft slot hole on the cantilever and is vertical to the workbench; the control cabinet controls and is connected with a control transmission device of the workpiece device, an upright post transmission device of the rotary grinding support, a sliding frame driving device of the grinding device and a grinding power motor.

The workpiece base on the workbench is arranged at the center position, and the support base is arranged at the corner position.

And a clamping groove structure for placing a workpiece is arranged at the central position of the workpiece fixing disc.

The length of the grinding shaft slot hole is greater than the diameter length of the workpiece fixing disk, wherein the distance between the farthest end of the grinding shaft slot hole and the rotating upright post is greater than the distance between the workpiece fixing disk and the outer edge of the farthest side of the rotating upright post, and the distance between the nearest end of the grinding shaft slot hole and the rotating upright post is less than the distance between the workpiece fixing disk and the outer edge of the nearest side of the rotating upright post.

The grinding guide rail is of a sliding bar structure, a guide rail support which is matched with the grinding guide rail is fixedly arranged at the bottom of the sliding frame, and the sliding frame is matched with the grinding guide rail through the guide rail support.

The grinding tool and the valve body sealing structure can be accurately controlled, adjusted and arranged according to different valve body structures and the required grinding tool, the valve body and the grinding tool can be simultaneously operated to grind, the efficiency and the precision of grinding and repairing operations of the valve body are greatly improved, and the repairing cost is reduced.

Drawings

FIG. 1 is a schematic side view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the overall structure of the present invention;

FIG. 3 is a schematic view of the assembly structure of the grinding apparatus of the present invention;

in the drawings: the grinding machine comprises a frame 1, a workbench 11, a workpiece base 12, a bracket base 13, a control cabinet 2, a workpiece device 3, a workpiece rotating shaft 31, a control transmission device 32, a workpiece fixing disc 33, a rotary grinding bracket 4, a rotating upright 41, an upright transmission device 42, a cantilever 43, a grinding shaft slot 431, a grinding guide rail 432, a grinding device 5, a carriage 51, a guide rail support 511, a carriage driving device 52, an expansion rod 521, a grinding transmission device 53, a grinding shaft 531, a grinding power motor 54, a grinding tool 6 and a valve body 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail with reference to the embodiments.

As shown in fig. 1-3, the large valve body grinder of the invention comprises a frame 1, a control cabinet 2, a workpiece device 3, a rotary grinding bracket 4 and a grinding device 5; a workbench 11 is fixedly arranged at the top of the rack 1, and a workpiece base 12 and a bracket base 13 are arranged on the workbench 11; the workpiece device 3 consists of a workpiece rotating shaft 31, a control transmission device 32 and a workpiece fixing disc 33, wherein the workpiece rotating shaft 31 is installed on the workpiece base 12 in a matching mode, the control transmission device 32 is fixedly installed on the rack 1 below the workpiece base 12, the control transmission device 32 is installed at the lower end of the workpiece rotating shaft 31 in a transmission matching mode, and the workpiece fixing disc 33 is fixedly installed at the top of the workpiece rotating shaft 31; the rotary grinding support 4 consists of a rotary upright column 41, an upright column transmission device 42 and a cantilever 43, wherein the rotary upright column 41 is installed on the support base 13 in a matching way, the upright column transmission device 42 is fixedly installed on the rack 1 below the support base 13, the upright column transmission device 42 is installed at the lower end of the rotary upright column 41 in a transmission matching way, and the cantilever 43 is fixedly installed at the top end of the rotary upright column 41; the cantilever 43 is arranged parallel to the workbench 11, a grinding shaft slot 431 is arranged along the length direction, and grinding guide rails 432 are fixedly arranged along two sides of the grinding shaft slot 431; the grinding device 5 consists of a carriage 51, a carriage driving device 52, a grinding transmission device 53 and a grinding power motor 54, wherein the carriage 51 is arranged on a grinding guide rail 432 of the cantilever 43 in a matching way, the carriage driving device 52 is fixedly arranged on the cantilever 43, the grinding transmission device 53 and the grinding power motor 54 are fixedly arranged on the carriage 51, and the grinding transmission device 53 and the grinding power motor 54 are arranged in a transmission matching way; the carriage driving device 52 is provided with a telescopic rod 521 which can drive to stretch, and the carriage driving device 52 is fixedly connected with the carriage 51 through the telescopic rod 521; the grinding transmission device 53 is provided with a grinding shaft 531 which extends out of the grinding shaft slot 431 on the cantilever 43 and is arranged perpendicular to the workbench 11; the control cabinet 2 controls a control transmission device 32 connected with the workpiece device 3, a column transmission device 42 for rotating the grinding support 4, a carriage driving device 52 of the grinding device 5 and a grinding power motor 54.

The workpiece base 12 on the work table 11 is disposed at a central position, and the stand bases 13 are disposed at corner positions.

The workpiece fixing disc 33 is provided with a clamping groove structure for placing a workpiece along the central position.

The length of the grinding shaft slot 431 is greater than the diameter length of the workpiece fixing disk 33, wherein the distance between the farthest end of the grinding shaft slot 431 and the rotating upright 41 is greater than the distance between the workpiece fixing disk 33 and the outer edge of the farthest side of the rotating upright 41, and the distance between the nearest end of the grinding shaft slot 431 and the rotating upright 41 is less than the distance between the workpiece fixing disk 33 and the outer edge of the nearest side of the rotating upright 41.

The grinding guide rail 432 is of a sliding bar structure, a guide rail support 511 which is matched with the grinding guide rail 432 is fixedly arranged at the bottom of the carriage 51, and the carriage 51 is matched and arranged on the grinding guide rail 432 through the guide rail support 511.

Example (b):

the large valve body grinding machine can be used for grinding the sealing surfaces of various valve bodies so as to finish the repair of the sealing performance of the valve bodies, and is combined with the attached drawings 1-3, the working mode of the large valve body grinding machine is that a grinding tool 6 matched with the sealing structure of the valve bodies is selected according to the types of the valve bodies 7, the valve bodies 7 are fixedly placed on a workpiece fixing disc 33 of a workpiece device 3, the machining positions of a grinding device 5 and the valve bodies 7 are adjusted by utilizing a rotary grinding support 4, and finally the grinding tool 6 is driven by the grinding device 5 to grind the sealing structure of the valve bodies 7. The specific working process and principle are as follows.

1) The arrangement of the working table 11 on the frame 1: the frame 1 is the basis of equipment installation, the workstation 11 is the grinding position of valve body 7, wherein the position of work piece base 12 and support base 13 is rationally distributed according to the workspace structure, work piece base 12 sets up the middle part at workstation 11, support base 13 sets up the border bight position at workstation 11, so set up support base 13 the border bight position of workstation 11 in order to rotate the cantilever 43 that grinds support 4 in the use and can accomplish the swing operation in the minimum angle range, and the swing range is in the vertical space scope of workstation 11.

2) The workpiece is fixedly placed and has an auxiliary rotating function: according to the type of the valve body 7 to be repaired, a workpiece fixing disk 33 with a corresponding fixing clamping groove structure is selected and arranged on the top of a workpiece rotating shaft 31 extending out of the workbench 11, the fixing clamping groove structure of the workpiece fixing disk 33 is arranged at the central part, the workpiece fixing disk 33 is also arranged on the workpiece rotating shaft 31 at the central part, and the workpiece device 3 drives the workpiece rotating shaft 31 to rotate through a control transmission device 32, so that the valve body 7 can rotate on the workpiece fixing disk 33 by a central shaft. During grinding operation, under the motionless condition of grinding tool 6, can accomplish grinding operation through the rotation of valve body 7 and the cooperation of grinding tool 6, take the ball valve as an example, adjust the degree of contact of grinding tool 6 and the sealed face of ball valve during grinding the ball valve, utilize the ball valve rotation operation can accomplish the operation fast.

3) The grinding tool has the following adjusting and positioning functions: the adjusting and positioning of the device refers to the processing and aligning matching of the grinding tool 6 and the sealing structure of the valve body 7 fixedly arranged on the workpiece fixing disc 33, after the valve body 7 is arranged on the workpiece fixing disc 33, firstly, the grinding part of the valve body 7 is determined, and then, the grinding head of the grinding tool 6 is adjusted to be combined with the grinding part of the valve body 7 by utilizing the matching operation of the rotary grinding support 4 and the grinding device 5. The rotary grinding support 4 controls the rotary upright 41 to rotate through the upright transmission device 42, and adjusts the swing position of the cantilever 43, so that the cantilever 43 is suspended right above the valve body 7. The grinding device 5 controls the telescopic rod 521 to operate through the carriage driving device 52 to drive the carriage 51 to move along the grinding guide rail 432 of the cantilever 43, so that the carriage 51 is adjusted to be right above the valve body 7. The height of the rotary upright 41 of the rotary grinding support 4 can be adjusted, and the height of the cantilever 43 can be adjusted by adjusting and controlling the height of the rotary upright 41, so that the purpose of adjusting the height of the grinding transmission device 53 is realized, and the matching of the grinding head of the grinding tool 6 arranged on the grinding shaft 531 and the grinding processing part of the valve body 7 is completed. By controlling the operation of the grinding power motor 54, the grinding shaft 531 of the grinding transmission device 53 is driven to rotate, so that the grinding tool 6 grinds and repairs the ground part of the valve body 7.

4) Linear grinding motion operation of the grinding tool: in the case that the grinding part of the valve body 7 is a plane, after the valve body 7 is fixedly mounted on the workpiece fixing disk 33, the workpiece fixing disk 33 does not need to rotate, and after the adjustment and positioning of the grinding tool as described in 3) are performed, the carriage 51 can be driven to linearly operate along the grinding guide rail 432 by controlling the operation of the carriage driving device 52, so that the grinding tool 6 can reciprocate along the grinding part of the valve body 7, and the grinding and repairing operation is completed.

Claims

1. A large-scale valve body grinds machine which characterized in that: comprises a frame (1), a control cabinet (2), a workpiece device (3), a rotary grinding bracket (4) and a grinding device (5); a workbench (11) is fixedly arranged at the top of the rack (1), and a workpiece base (12) and a support base (13) are arranged on the workbench (11); the workpiece device (3) is composed of a workpiece rotating shaft (31), a control transmission device (32) and a workpiece fixing disc (33), the workpiece rotating shaft (31) is installed on a workpiece base (12) in a matched mode, the control transmission device (32) is fixedly installed on the rack (1) below the workpiece base (12), the control transmission device (32) and the lower end of the workpiece rotating shaft (31) are installed in a transmission matched mode, and the workpiece fixing disc (33) is fixedly installed on the top of the workpiece rotating shaft (31); the rotary grinding support (4) consists of a rotary upright post (41), an upright post transmission device (42) and a cantilever (43), the rotary upright post (41) is installed on the support base (13) in a matched mode, the upright post transmission device (42) is fixedly installed on the rack (1) below the support base (13), the upright post transmission device (42) is installed at the lower end of the rotary upright post (41) in a transmission matched mode, and the cantilever (43) is fixedly installed at the top end of the rotary upright post (41); the cantilever (43) is arranged in parallel with the workbench (11), a grinding shaft slot hole (431) is formed along the length direction, and grinding guide rails (432) are fixedly arranged along two sides of the grinding shaft slot hole (431); the grinding device (5) consists of a sliding frame (51), a sliding frame driving device (52), a grinding transmission device (53) and a grinding power motor (54), the sliding frame (51) is installed on a grinding guide rail (432) of the cantilever (43) in a matching mode, the sliding frame driving device (52) is fixedly installed on the cantilever (43), the grinding transmission device (53) and the grinding power motor (54) are fixedly installed on the sliding frame (51), and the grinding transmission device (53) and the grinding power motor (54) are installed in a transmission matching mode; the sliding frame driving device (52) is provided with a telescopic rod (521) capable of driving to stretch, and the sliding frame driving device (52) is fixedly connected with the sliding frame (51) through the telescopic rod (521); the grinding transmission device (53) is provided with a grinding shaft (531), extends out of a grinding shaft slot hole (431) on the cantilever (43), and is vertical to the workbench (11); the control cabinet (2) is connected with a control transmission device (32) of the workpiece device (3), an upright post transmission device (42) of the rotary grinding bracket (4), a sliding frame driving device (52) of the grinding device (5) and a grinding power motor (54) in a control mode.

2. The large valve body grinder of claim 1, wherein: the workpiece base (12) on the workbench (11) is arranged at the center position, and the support base (13) is arranged at the corner position.

3. The large valve body grinder of claim 1, wherein: the workpiece fixing disc (33) is provided with a clamping groove structure for placing a workpiece along the central position.

4. The large valve body grinder of claim 1, wherein: the length of the grinding shaft slot hole (431) is greater than the diameter length of the workpiece fixing disk (33), wherein the distance between the farthest end of the grinding shaft slot hole (431) and the rotating upright post (41) is greater than the distance between the workpiece fixing disk (33) and the outer edge of the farthest side of the rotating upright post (41), and the distance between the nearest end of the grinding shaft slot hole (431) and the rotating upright post (41) is less than the distance between the workpiece fixing disk (33) and the outer edge of the nearest side of the rotating upright post (41).

5. The large valve body grinder of claim 1, wherein: the grinding guide rail (432) is of a sliding bar structure, a guide rail support (511) matched with the grinding guide rail (432) is fixedly arranged at the bottom of the sliding frame (51), and the sliding frame (51) is matched and arranged on the grinding guide rail (432) through the guide rail support (511).