High-precision polishing and grinding device for machining valve element of stop valve

Abstract

The invention discloses a high-precision polishing and grinding device for machining a valve element of a stop valve, and belongs to the technical field of valve element polishing machining. The high-precision polishing and grinding device comprises an equipment base placed in a workshop, a polishing motor is installed on the outer side of the equipment base through a frame body in a lifting mode, and a polishing head is fixedly installed at the output end of the polishing motor; a polishing seat is further fixedly mounted above the equipment base, a center shaft is rotatably mounted on the inner side of the upper portion of the polishing seat, the center shaft is in transmission connection with a polishing head through a linkage transmission assembly, and side shafts rotatably connected with the polishing seat are evenly arranged on the outer side of the center shaft. The center shaft and the side shafts are in transmission connection through transmission gear sets, and clamping and positioning assemblies are arranged at the tops of the side shafts. According to the high-precision polishing and grinding device for machining the valve element of the stop valve, synchronous and automatic positioning and polishing of the valve element at multiple stations can be achieved, the polishing efficiency is high, and polishing liquid and metal dust can be efficiently treated and recycled in the polishing process.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of valve core polishing processing, in particular to a high-precision polishing and grinding device for stop valve core processing. BACKGROUND

[0002] As an indispensable control component in a fluid conveying system, the realization of the core function of a stop valve highly depends on the machining precision and surface quality of a valve core. As a key dynamic sealing element of the stop valve, the valve core needs to form a tight fit with a valve seat to block fluid leakage, and the smoothness of the valve core outer surface and the shape and position tolerance directly determine the stability of the sealing performance, the smoothness of the operating torque and the overall service life of the valve.

[0003] The prior art (Chinese patent with publication number CN117415688A and publication date January 19, 2024) discloses a valve core polishing device, which comprises a mounting base and a mounting bracket. The mounting bracket is installed on the left side edge of the upper end face of the mounting base. A connecting slide rail is formed in the interior of the mounting bracket. A threaded rod is installed in the interior of the connecting slide rail. An adjusting bracket is installed on the outer surface of the threaded rod. A connecting slide rod is arranged in the interior of the adjusting bracket and located on the right side of the threaded rod. A supporting shaft is arranged on the right side of the upper end face of the mounting base. A supporting plate is installed on the upper end of the supporting shaft. By arranging the extrusion mechanism assembly and the cleaning mechanism, the connecting gear is enabled to rotate, so that the transmission gear and the connecting block are enabled to rotate in opposite directions. The extrusion block is tightly fitted with the extrusion groove to perform extrusion, so that the valve core body fixed on the supporting plate is enabled to rotate in the opposite direction of the polishing mechanism through the supporting shaft, thereby further improving the polishing effect. The prior art (Chinese patent with publication number CN115008301A and publication date September 6, 2022) discloses an automatic polishing device for a one-way valve core and belongs to the technical field of processing equipment. The device comprises a shell, a cooling mechanism, a collecting mechanism, a protection mechanism, a clamping mechanism, a polishing mechanism and a power mechanism. The clamping mechanism comprises a clamping disc. Two symmetrical upper fixed strips are slidably installed on the clamping disc. The upper fixed strips are detachably connected with lower fixed strips. The lower fixed strips are slidably installed on the clamping disc. The polishing mechanism comprises a polishing cutter. The polishing cutter is installed on a pitch adjusting assembly for adjusting the polishing angle of the polishing cutter. The power mechanism is used for driving the polishing mechanism, the collecting mechanism and the protection mechanism. The clamping mechanism, the polishing mechanism and the power mechanism are used for polishing and polishing the one-way valve core, and the structure is simple and the operation is convenient.

[0004] The existing polishing and grinding device for valve core machining needs manual positioning of the valve core during use, which reduces the polishing efficiency, and the polishing liquid cannot be conveniently recycled during the machining process, which affects the machining environment and increases the cost, and there are certain use defects. SUMMARY

[0005] The present application aims to provide a high-precision polishing and grinding device for stop valve core machining to solve the problem of the current polishing and grinding device for valve core machining on the market, which needs manual positioning of the valve core during use, which reduces the polishing efficiency, and the polishing liquid cannot be conveniently recycled during the machining process.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-precision polishing and grinding device for stop valve core machining, comprising a device base placed in a workshop, a polishing motor is installed on the outside of the device base through a frame body, and a polishing head is fixedly installed on the output end of the polishing motor; A polishing seat is also fixedly installed on the upper part of the device base, a central shaft is rotatably installed on the upper part of the polishing seat, the central shaft is drivingly connected with the polishing head through a connecting transmission assembly, and the outside of the central shaft is uniformly provided with a side shaft rotatably connected with the polishing seat, the central shaft and the side shaft are drivingly connected through a transmission gear set, a clamping and positioning assembly is provided on the top of the side shaft, a driving assembly is provided on the central shaft and the side shaft to drive the clamping and positioning assembly to position the valve core, a rotating plate is elastically rotatably installed on the inner side of the lower part of the polishing seat, a lifting plate is also liftingly provided on the inner side of the lower part of the polishing seat, and a colloid cylinder is fixedly connected between the rotating plate and the lifting plate, a liquid inlet pipe is connected between the colloid cylinder and the upper part of the polishing seat, a liquid outlet pipe is installed on the lifting plate, and a filter membrane is installed on the liquid outlet pipe.

[0007] Preferably, the connecting transmission assembly comprises a telescopic shaft slidingly and liftingly installed above the central shaft, a first spring is fixedly connected between the telescopic shaft and the central shaft, and the polishing head, the central shaft and the telescopic shaft are coaxially arranged, an adapter block is fixedly provided on the lower end surface of the polishing head, an adapter groove is formed in the upper end surface of the telescopic shaft, and the polishing head is driven to rotate synchronously with the central shaft and the telescopic shaft through the adapter block and the adapter groove after the polishing head is lowered.

[0008] Preferably, the central shaft drives the side shaft to rotate synchronously through the transmission gear set, and the valve core positioned on the side shaft is attached to the outside of the polishing head.

[0009] Preferably, the driving assembly comprises a lifting frame rotatably installed on the outside of the telescopic shaft, and a sliding sleeve is rotatably installed on the outside of the lifting frame, and the sliding sleeve is liftingly sleeved on the outside of the side shaft.

[0010] Preferably, the clamping positioning assembly comprises a tray fixedly installed on the top of the side shaft, and the tray is provided with a sliding groove structure at equal angles, and a clamping block is slidingly installed in the sliding groove structure, and the lower end of the clamping block is in an inclined structure, and the upper part of the sliding sleeve is attached to the lower end of the clamping block, and the sliding sleeve is pushed to drive the clamping block to slide synchronously along the sliding groove structure during the downward movement of the sliding sleeve, and the second spring is fixedly connected between the clamping block and the side shaft.

[0011] Preferably, a fixed gear is fixedly installed at the middle position of the top of the rotating plate, and the lower end of one of the side shafts is fixedly installed with an incomplete gear, and the incomplete gear and the fixed gear are meshingly connected to drive the rotating plate to reciprocating rotate.

[0012] Preferably, a guide rod is symmetrically slidingly arranged outside the lifting plate, and the guide rod is fixedly installed on the inner side of the lower part of the polishing seat, and the third spring is fixedly connected between the lifting plate and the guide rod.

[0013] Preferably, the rotating plate is matched with the lifting plate to twist the colloid cylinder during the rotation of the rotating plate, and the lower end of the colloid cylinder pulls the lifting plate to elastically rise during the twisting of the colloid cylinder.

[0014] Preferably, the liquid outlet pipe and the liquid inlet pipe are both provided with a one-way valve structure, and the top of the polishing seat is fixedly installed with an annular dust suction member, and the dust suction member is fixedly connected with an air inlet pipe between the polishing seat and the lower part of the polishing seat, the lower end of the air inlet pipe is located between the rotating plate and the lifting plate, and the lifting plate is sealingly connected with the inner wall of the polishing seat, the lifting plate is further fixedly installed with an air outlet pipe, the air outlet pipe communicates the inside and outside of the colloid cylinder, and the air inlet pipe and the air outlet pipe are both provided with a one-way valve structure.

[0015] Compared with the prior art, the high-precision polishing and grinding device for stop valve core processing has the advantages that the device can realize synchronous automatic positioning and polishing of multiple workpieces, has high polishing efficiency, and can efficiently treat and recycle polishing liquid and metal dust during polishing, and the specific content is as follows. 1. The polishing head, center shaft and side shaft are provided, the center shaft can be driven to synchronously rotate through the downward movement of the polishing head, the center shaft can drive multiple side shafts to synchronously rotate through the transmission gear set, the polishing head and the valve core are synchronously rotated, the efficient polishing of multiple workpieces is realized, and the polishing efficiency is effectively improved.

[0016] 2. The clamping block, lifting frame and sliding sleeve are provided, the polishing head can drive the telescopic shaft to drive the lifting frame to move downward as the polishing head moves downward, the sliding sleeve rotatingly connected outside the lifting frame can push multiple clamping blocks to synchronously slide and expand when the side shaft moves downward, so that the clamping and fixing of the valve core are realized.

[0017] 3, the lower end of the side shaft is provided with an incomplete gear, which can drive the rotating plate to rotate through meshing, and the rotating plate can twist the gel cylinder with the lifting plate during rotation, pull the lifting plate up, increase the internal pressure of the gel cylinder, and then discharge the polishing liquid in the gel cylinder through the filter membrane, and when the lifting plate moves down, the liquid inlet pipe and the air inlet pipe can respectively suck the polishing liquid and the escaped dust, and the dust sucked in the polishing liquid in the gel cylinder can be injected again when the lifting plate rises, thereby improving the recovery efficiency of metal dust. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structure schematic diagram of the present application; Figure 2 It is a front view structure schematic diagram of the present application; Figure 3 It is a front view structure schematic diagram of the present application; Figure 4 It is a front view structure schematic diagram of the present application; Figure 5 It is a front view structure schematic diagram of the present application; Figure 6 It is a front view structure schematic diagram of the present application; Figure 7 It is a front view structure schematic diagram of the present application; Figure 8 It is a front view structure schematic diagram of the present application.

[0019] In the figure: 1, cylinder; 2, lifting seat; 3, polishing motor; 4, polishing head; 401, adapter block; 5, polishing seat; 6, center shaft; 7, telescopic shaft; 8, first spring; 9, side shaft; 10, tray; 11, clamp block; 12, second spring; 13, lifting frame; 14, sliding sleeve; 15, transmission gear set; 16, incomplete gear; 17, rotating plate; 18, fixed gear; 19, guide rod; 20, third spring; 21, lifting plate; 22, gel cylinder; 23, liquid discharge pipe; 24, filter membrane; 25, liquid inlet pipe; 26, air inlet pipe; 27, exhaust pipe; 28, dust suction piece. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Embodiment one: the existing valve core processing polishing device needs manual positioning of the valve core during use, which reduces the polishing efficiency. In order to solve this technical problem, the embodiment discloses the following technical content, please refer to Figures 1-6 A high-precision polishing device for processing valve core of stop valve, comprising a device base placed in the workshop, a polishing motor 3 is installed on the outer side of the device base through the frame body lifting, and the output end of the polishing motor 3 is fixedly installed with a polishing head 4, and the upper side of the device base is also fixedly installed with a polishing seat 5, the upper inner side of the polishing seat 5 is rotatably installed with a center shaft 6, and the center shaft 6 is drivingly connected with the polishing head 4 through a connecting transmission assembly, and the outer side of the center shaft 6 is uniformly provided with a side shaft 9 rotatably connected with the polishing seat 5, the center shaft 6 and the side shaft 9 are drivingly connected through a transmission gear set 15, the top of the side shaft 9 is provided with a clamping and positioning assembly, and the center shaft 6 and the side shaft 9 are provided with a driving assembly for driving the clamping and positioning assembly to position the valve core.

[0022] The connecting transmission assembly comprises a telescopic shaft 7 slidingly and liftingly installed above the center shaft 6, and a first spring 8 is fixedly connected between the telescopic shaft 7 and the center shaft 6, and the polishing head 4, the center shaft 6 and the telescopic shaft 7 are coaxially arranged, a connecting block 401 is fixedly arranged on the lower end surface of the polishing head 4, a connecting groove is formed in the upper end surface of the telescopic shaft 7, and the polishing head 4 is driven to rotate synchronously with the center shaft 6 and the telescopic shaft 7 through the insertion of the connecting block 401 and the connecting groove after the polishing head 4 moves downward, the center shaft 6 drives the side shaft 9 to rotate synchronously through the transmission gear set 15, and the valve core positioned on the side shaft 9 is attached to the outer side of the polishing head 4, the driving assembly comprises a lifting frame 13 rotatably installed on the outer side of the telescopic shaft 7, and a sliding sleeve 14 is uniformly rotatably installed on the outer side of the lifting frame 13, and the sliding sleeve 14 is liftingly sleeved on the outer side of the side shaft 9, the clamping and positioning assembly comprises a tray 10 fixedly installed on the top of the side shaft 9, and an angle groove structure is formed in the tray 10, a clamping block 11 is slidingly installed in the angle groove structure, the lower end of the clamping block 11 is inclined, the upper part of the sliding sleeve 14 is attached to the lower end inclined surface of the clamping block 11, the clamping block 11 is synchronously slid along the angle groove structure in the process of the sliding sleeve 14 moving downward, and a second spring 12 is fixedly connected between the clamping block 11 and the side shaft 9.

[0023] When the valve core needs to be polished, the lower end of the valve core to be processed is sleeved on the outer side of the clamping block 11, and then the cylinder 1 controls the lifting seat 2 to drive the polishing motor 3 and the polishing head 4 to move down. At this time, the adapter block 401 at the lower end of the polishing head 4 can be inserted into the groove at the top of the telescopic shaft 7. As the polishing head 4 continues to move down, the telescopic shaft 7 can be telescoped outside the central shaft 6 and compressed the first spring 8, while the telescopic shaft 7 will drive the lifting frame 13 outside it to move down synchronously, so that the lifting frame 13 drives the sliding sleeve 14 outside it to move down synchronously. At this time, the sliding sleeve 14 will slide on the inclined surface at the lower end of the clamping block 11, thereby pushing the plurality of clamping blocks 11 to slide along the groove on the tray 10, so that the plurality of clamping blocks 11 are expanded synchronously to clamp and position the valve core. When the polishing head 4 is attached to the valve body to be polished, the polishing motor 3 is then started to drive the polishing head 4 to rotate. At this time, the polishing head 4 can drive the central shaft 6 to rotate synchronously through the adapter block 401, and the central shaft 6 can drive the plurality of side shafts 9 to rotate synchronously through the transmission gear set 15, so that the polishing head 4 and the valve core rotate synchronously to achieve efficient polishing of the multi-station valve core, effectively improving the polishing efficiency.

[0024] In this embodiment, the technical content disclosed is a further improvement based on the above-mentioned embodiment one. The existing polishing and grinding device for valve core processing is not convenient for recycling the polishing liquid during processing, which affects the processing environment and increases the cost. In order to further solve this technical problem, the present embodiment discloses the following technical content, as shown in Figures 4-8 The lower inner side of the polishing seat 5 is elastically rotatably installed with a rotating plate 17, and the lower inner side of the polishing seat 5 is also provided with a lifting plate 21, and the rotating plate 17 and the lifting plate 21 are fixedly connected with a colloid cylinder 22, the colloid cylinder 22 and the upper cylinder structure of the polishing seat 5 are connected with a liquid inlet pipe 25, and the lifting plate 21 is provided with a liquid outlet pipe 23, and the liquid outlet pipe 23 is provided with a filter membrane 24.

[0025] The middle position of the top of the rotating plate 17 is fixedly provided with a fixed gear 18, and the lower end of one of the side shafts 9 is fixedly provided with an incomplete gear 16, and the incomplete gear 16 and the fixed gear 18 are meshingly connected to drive the rotating plate 17 to reciprocating rotate, the outer side of the lifting plate 21 is symmetrically and slidingly provided with a guide rod 19, and the guide rod 19 is fixedly installed on the inner side of the lower part of the polishing seat 5, and the third spring 20 is fixedly connected between the lifting plate 21 and the guide rod 19, and the colloid cylinder 22 is twisted by the rotating plate 17 and the lifting plate 21 during the rotation of the rotating plate 17, and the lower end of the colloid cylinder 22 pulls the lifting plate 21 to elastically rise during the twisting of the colloid cylinder 22, the liquid discharge pipe 23 and the liquid inlet pipe 25 are both provided with a one-way valve structure, the top of the polishing seat 5 is fixedly provided with an annular dust collection member 28, and the air inlet pipe 26 is fixedly connected between the dust collection member 28 and the lower part of the polishing seat 5, the lower end of the air inlet pipe 26 is located between the rotating plate 17 and the lifting plate 21, and the lifting plate 21 is sealingly connected with the inner wall of the polishing seat 5, and the air outlet pipe 27 is fixedly installed on the lifting plate 21, and the air outlet pipe 27 communicates the inner and outer spaces of the colloid cylinder 22, and the air inlet pipe 26 and the air outlet pipe 27 are both provided with a one-way valve structure.

[0026] The polishing waste liquid generated during the cutting process is collected by the upper part of the polishing seat 5, and the incomplete gear 16 provided at the lower end of the side shaft 9 drives the rotating plate 17 to rotate through meshing, and the colloid cylinder 22 is twisted by the rotating plate 17 and the lifting plate 21 during the rotation of the rotating plate 17, and the lifting plate 21 is pulled to move upward along the guide rod 19, at this time, the space inside the colloid cylinder 22 is compressed, so that the air pressure inside the colloid cylinder 22 is increased, so that the polishing liquid sucked inside the colloid cylinder 22 is filtered by the filter membrane 24 and then discharged, and the liquid discharge pipe 23 can be installed in a detachable structure, so that the filter membrane 24 can be replaced in the subsequent process, and when the rotating plate 17 rotates to reset, the lifting plate 21 moves downward under the elastic force of the third spring 20, at this time, the colloid cylinder 22 gradually restores to a cylindrical shape, at this time, the liquid inlet pipe 25 can suck the polishing liquid collected inside the upper part of the polishing seat 5, and the air inlet pipe 26 can suck the dust generated during the polishing process through the dust collection member 28, and the dust sucked in the subsequent lifting of the lifting plate 21 is injected into the polishing liquid inside the colloid cylinder 22 again, so as to improve the recovery efficiency of the metal dust.

[0027] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0028] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-precision polishing device for stop valve spool machining, comprising a device base placed in a workshop, a polishing motor (3) is installed on the outside of the device base through a frame body lifting device, and a polishing head (4) is fixedly installed on the output end of the polishing motor (3); characterized in that A polishing seat (5) is also fixedly installed above the device base, a central shaft (6) is rotatably installed on the upper inner side of the polishing seat (5), the central shaft (6) is drivingly connected with the polishing head (4) through a connecting transmission assembly, and the outer side of the central shaft (6) is uniformly provided with side shafts (9) rotatably connected with the polishing seat (5), the central shaft (6) and the side shafts (9) are drivingly connected through a transmission gear set (15), the top of each side shaft (9) is provided with a clamping and positioning assembly, driving assemblies are provided on the central shaft (6) and the side shafts (9) to drive the clamping and positioning assembly to position the valve spool, a rotating plate (17) is elastically rotatably installed on the lower inner side of the polishing seat (5), a lifting plate (21) is also liftingly provided on the lower inner side of the polishing seat (5), and a colloid cylinder (22) is fixedly connected between the rotating plate (17) and the lifting plate (21), a liquid inlet pipe (25) is connected between the colloid cylinder (22) and the upper cylinder structure of the polishing seat (5), a liquid outlet pipe (23) is installed on the lifting plate (21), and a filter membrane (24) is installed on the liquid outlet pipe (23).

2. The high-precision polishing and grinding device for machining a stop valve spool according to claim 1, characterized in that: The connecting transmission assembly comprises a telescopic shaft (7) slidingly and liftingly installed above the central shaft (6), a first spring (8) is fixedly connected between the telescopic shaft (7) and the central shaft (6), and the polishing head (4), the central shaft (6) and the telescopic shaft (7) are coaxially arranged, an adapter block (401) is fixedly arranged on the lower end face of the polishing head (4), an adapter groove is formed in the upper end face of the telescopic shaft (7), and the polishing head (4) is driven to rotate synchronously with the central shaft (6) and the telescopic shaft (7) through the adapter block (401) and the adapter groove after the polishing head (4) is lowered.

3. The high-precision polishing and grinding device for machining a stop valve spool according to claim 2, characterized in that: The central shaft (6) drives the side shafts (9) to rotate synchronously through the transmission gear set (15), and the valve spool positioned on the side shafts (9) is attached to the outer side of the polishing head (4).

4. The high-precision polishing and grinding device for machining a stop valve spool according to claim 2, characterized in that: The driving assembly comprises a lifting frame (13) rotatably installed on the outer side of the telescopic shaft (7), sliding sleeves (14) are uniformly rotatably installed on the outer side of the lifting frame (13), and the sliding sleeves (14) are liftingly sleeved on the outer side of the side shafts (9).

5. The high-precision polishing and grinding device for machining a stop valve spool according to claim 1, characterized in that: The clamping and positioning assembly comprises a tray (10) fixedly installed on the top of the side shafts (9), equiangular sliding groove structures are formed in the tray (10), clamping blocks (11) are slidingly installed in the sliding groove structures, the lower end of each clamping block (11) is inclined, the upper part of each sliding sleeve (14) is attached to the lower end inclined surface of the clamping block (11), the clamping block (11) is synchronously slid along the sliding groove structure during the lowering process of the sliding sleeve (14), and a second spring (12) is fixedly connected between the clamping block (11) and the side shafts (9).

6. The high-precision polishing and grinding device for machining a stop valve spool according to claim 1, characterized in that: The top middle position of the rotating plate (17) is fixedly provided with a fixed gear (18), one side shaft (9) is fixedly provided with an incomplete gear (16) at the lower end, and the incomplete gear (16) and the fixed gear (18) are meshingly connected to drive the rotating plate (17) to reciprocating rotate.

7. The high-precision polishing and grinding device for machining a stop valve spool according to claim 6, characterized in that: The outer side of the lifting plate (21) is symmetrically provided with a guide rod (19) slidingly penetrating through, the guide rod (19) is fixedly installed at the inner side of the lower part of the polishing seat (5), and the third spring (20) is fixedly connected between the lifting plate (21) and the guide rod (19).

8. The high-precision polishing and grinding device for machining a stop valve spool according to claim 7, characterized in that: The rotating plate (17) is twisted during rotation, and the lifting plate (21) is twisted during rotation, and the lower end of the lifting plate (21) pulls the lifting plate (21) to elastically rise and adjust.

9. The high-precision polishing and grinding device for machining a stop valve spool according to claim 8, characterized in that: The liquid outlet pipe (23) and the liquid inlet pipe (25) are both provided with a one-way valve structure, the top of the polishing seat (5) is fixedly provided with an annular dust collection member (28), the air inlet pipe (26) is fixedly connected between the dust collection member (28) and the lower part of the polishing seat (5), the lower end of the air inlet pipe (26) is located between the rotating plate (17) and the lifting plate (21), the lifting plate (21) is sealingly connected with the inner wall of the polishing seat (5), the air outlet pipe (27) is fixedly installed on the lifting plate (21), the air outlet pipe (27) is in communication with the inner and outer spaces of the colloid cylinder (22), and the air inlet pipe (26) and the air outlet pipe (27) are both provided with a one-way valve structure.

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