Adjusting valve polishing machining device and using method thereof

Abstract

The invention relates to the technical field of valve body polishing, and particularly discloses an adjusting valve polishing device and a using method thereof.The adjusting valve polishing device comprises a valve body and a clamping part capable of clamping the valve body, a center shaft which is coaxial with the circle center of an inner hole of a valve seat and can rotate is arranged in the valve body in a penetrating mode, and two sets of polishing parts capable of sliding and adjusting along the center shaft are arranged on the outer wall of the center shaft; the polishing part comprises a plurality of polishing pieces capable of adjusting the included angle between the polishing pieces and the center shaft, and when the polishing pieces and the center shaft rotate together, a polishing conical surface attached to the inner wall of the valve seat can be formed. Two groups of valve seats are polished through the two groups of polishing parts at the same time, so that the double-seat valve does not need to be disassembled and reassembled in the polishing process, the deviation of conical surface angles of inner holes of the two groups of valve seats due to errors caused by repositioning is avoided, and the polishing allowance of a sealing surface of a certain valve seat is increased or reduced; and therefore, the control precision of the device on the grinding allowance is improved, and the sealing performance of the double-seat valve is improved.

Description

Technical Field

[0001] The invention relates to the technical field of valve body grinding, and in particular to a regulating valve grinding processing device and a use method thereof. Background Art

[0002] The regulating valve is a very important control element in the industrial automation system. Its main function is to achieve precise control of the industrial process by changing parameters such as fluid flow, pressure or temperature. Since the sealing of the regulating valve is achieved by the valve seat and the valve disc, in order to ensure the sealing performance of the valve, the valve seat and the valve disc are required to have a high surface roughness and flatness during processing, so the sealing surface needs to be polished.

[0003] For example, Chinese patent number CN117817461B discloses a valve body polishing device for a switch valve. The invention provides a stabilizing part, which allows multiple valve bodies to be polished in sequence, without the need to manually fix and install the valve bodies one by one, thereby improving the polishing efficiency of the valve bodies and realizing batch processing of the valve bodies; the polishing part provided can polish valve bodies with different inner diameters, without the need to frequently replace the polishing brush when polishing different valve bodies; by moving the polishing motor and the advance and retreat frame, the polishing of the valve body can be controlled, and the discharge of the polished valve body can be controlled, greatly reducing the process steps of valve body polishing.

[0004] Among them, the double-seat valve contains two valve cores and two valve seats, and the existing technology can usually only grind one valve seat. After grinding one side, the valve body needs to be recalibrated and positioned before the valve seat on the other side can be polished. In order to ensure the sealing of the double-seat valve and reduce the unbalanced force, the sealing surface of the valve seat is usually set to a conical surface. In this solution, only the pipe wall with equal diameter can be polished, which cannot meet the grinding process of the double-seat valve. Summary of the invention

[0005] The object of the present invention is to provide a regulating valve grinding processing device and a method of using the same, so as to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a regulating valve grinding processing device, comprising a valve body and a clamping portion capable of clamping the valve body, wherein a central axis which is coaxial with the center of an inner hole of a valve seat and can rotate is passed through the valve body, and two groups of grinding portions which can be slidably adjusted along the central axis are provided on the outer wall of the central axis, and the grinding portion comprises a plurality of grinding pieces which can adjust the angle between the grinding pieces and the central axis, and when the grinding pieces rotate together with the central axis, a grinding conical surface which fits the inner wall of the valve seat can be formed.

[0007] Preferably, a first moving block and a second moving block are slidably installed on the outer wall of the central axis, two rotating rods rotatably connected to each other are rotatably installed between the first moving block and the second moving block, and the rotating rods are symmetrically arranged with the central axis as the center line, the first moving block and the second moving block and the rotating rod therebetween together constitute a first grinding part, and a third moving block and a fourth moving block are also slidably installed on the outer wall of the central axis, two rotating rods rotatably connected to each other are also rotatably installed between the third moving block and the fourth moving block, the third moving block and the fourth moving block and the rotating rod therebetween together constitute a second grinding part, and a plurality of the grinding parts are respectively fixed on the corresponding outer walls of the rotating rods.

[0008] Preferably, a fixing seat located between the first grinding part and the second grinding part is fixedly installed on the outer wall of the central axis, a rotating shaft and a rotating shaft are rotatably installed on both sides of the central axis, and the rotating shaft and the rotating shaft both pass through the first moving block, the second moving block, the third moving block, the fourth moving block and the fixing seat, the rotating shaft is connected to the first moving block by a thread, and the outer wall of the rotating shaft is sleeved with two threaded tubes respectively threadedly connected to the third moving block and the fourth moving block, the rotating shaft is connected to the second moving block by a thread, and the outer wall of the rotating shaft is also sleeved with two threaded tubes respectively threadedly connected to the third moving block and the fourth moving block;

[0009] The regulating valve grinding processing device also includes a switching component, which has two states. In state one, the threaded tube threadedly connected to the outer wall of the rotating shaft and the third moving block is locked with the rotating shaft, and the threaded tube threadedly connected to the outer wall of the rotating shaft and the fourth moving block is locked with the rotating shaft; in state two, the threaded tube threadedly connected to the outer wall of the rotating shaft and the fourth moving block is locked with the rotating shaft, and the threaded tube threadedly connected to the outer wall of the rotating shaft and the third moving block is locked with the rotating shaft.

[0010] Preferably, the switching assembly includes a limiter rotatably mounted on the outer wall of the central axis, the outer walls of the rotating shaft and the rotating shaft are slidably mounted with a sliding cylinder through a flat key, the outer wall of the sliding cylinder is provided with a spline groove, and the inner wall of the threaded tube is provided with a spline that can be embedded in the spline groove, the outer walls of the two sliding cylinders are rotatably mounted with a rotating ring, the outer wall of the rotating ring is provided with a limit pin, the limiter is provided with a sliding groove for the limit pin to slide, the side wall of the limiter is also provided with an arrow-shaped protrusion, the inner wall of the groove provided on the central axis is provided with an elastic limit pin, and one end of the elastic limit pin is against the side wall of the arrow-shaped protrusion.

[0011] Preferably, the clamping part includes a base that can be fixed to the ground, and two groups of movable frames that can be horizontally moved and adjusted are fixedly installed on the upper surface of the base, and the rotating shaft, rotating shaft and central axis are all rotatably installed between the two groups of movable frames. A clamping block is also slidably installed on the top surface of the base, and the clamping blocks can move away from each other to internally support and clamp the valve body. A motor is fixedly installed on the side wall of the movable frame, and the driving shaft of the motor is fixedly connected to one end of the central axis.

[0012] Preferably, the rotating shaft and one end of the rotating shaft pass through the movable frame and are fixedly mounted with a detachable rotating handle.

[0013] Preferably, laser rangefinders are fixedly mounted on the ends of the second moving block and the fourth moving block that are away from each other.

[0014] Preferably, the rotating rods included in the first polishing part and the second polishing part are distributed in a ring in multiple groups with the central axis as the center.

[0015] Preferably, a through hole communicating with the valve body is provided on the top surface of the base, and the through hole is connected with an external air suction device.

[0016] A method for using a regulating valve grinding device comprises the following steps:

[0017] Step 1: First, the valve body is clamped and fixed by the clamping part, and then the distance between the two valve seats is measured by an external measuring device;

[0018] Step 2: According to the measurement results, the positions of the second moving block and the fourth moving block are adjusted and fixed by the rotating shaft and the rotating shaft, and then the central axis, the first polishing part and the second polishing part are inserted into the valve body together and the central axis is fixed so that it is coaxial with the center of the inner hole of the valve seat;

[0019] Step 3: Adjust the state of the switching assembly according to the type of valve seat. If the two groups of valve seats are arranged opposite to each other, switch the switching assembly to state 1, and rotate the rotating shaft and the rotating shaft to move the first moving block toward the second moving block and the third moving block toward the fourth moving block, driving the rotating rods between the two groups of grinding parts to rotate relative to each other so that the grinding piece and the conical surface of the valve seat sealing surface are against each other;

[0020] Step 4: If the two sets of valve seats are set in the same direction, the switching assembly is switched to state 2, and the rotating shaft and the rotating shaft are rotated to move the first moving block toward the second moving block and the fourth moving block toward the third moving block, so that the polishing piece and the inner hole section of the valve seat are against each other;

[0021] Step 5: After switching the valve seat type, after step 3 or step 4, drive the central axis to drive the two grinding parts to rotate together, and grind the two sets of valve seats in the valve body at the same time. After grinding, replace the valve body and repeat the above steps 1 to 4.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention grinds two groups of valve seats at the same time through two groups of grinding parts, so that the double-seat valve does not need to be disassembled and reinstalled during the grinding process, avoiding errors caused by repositioning that cause deviations in the cone surface angles of the inner holes of the two groups of valve seats, increasing or reducing the grinding allowance of the sealing surface of a certain valve seat, thereby improving the control accuracy of the device on the grinding allowance, and improving the sealing performance of the double-seat valve.

[0024] 2. The present invention fixes the positions of the second movable block and the fourth movable block and adjusts the positions of the first movable block and the third movable block, thereby enabling two groups of relative polishing parts to simultaneously polish the inner holes of valve seats arranged in opposite directions, and by fixing the positions of the second movable block and the third movable block and adjusting the positions of the first movable block and the fourth movable block, two groups of polishing parts in the same direction can polish the inner holes of valve seats arranged in the same direction. That is, different types of valve bodies can be polished by switching the polishing parts in different directions, thereby improving the scope of use of the device.

[0025] 3. The present invention positions different moving blocks and moves the remaining moving blocks without interfering with each other, so that the limit rod and the grinding piece can produce various angle changes to adapt to valve bodies of different types or specifications, thereby improving the processing range of the valve body by the device. In addition, due to the characteristics of the threaded connection, when the central axis is driven to rotate, the rotating shaft and the rotating shaft can be self-locked together, thereby fixing the positions of multiple groups of moving blocks and improving the grinding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a cross-sectional view of the valve seat inner holes of the present invention when they are arranged opposite to each other;

[0028] Figure 3 It is a cross-sectional view when the inner holes of the valve seat in the present invention are arranged in the same direction;

[0029] Figure 4 It is a partial cross-sectional view of the grinding part in the present invention;

[0030] Figure 5 The three-dimensional structure of the grinding part in the present invention is shown in FIG. Figure 1 ;

[0031] Figure 6 is a side cross-sectional view of the grinding portion of the present invention;

[0032] Figure 7 It is a three-dimensional structural cross-sectional view of the grinding part in the present invention;

[0033] Figure 8The three-dimensional structural section of the grinding part in the present invention Figure 2 .

[0034] In the figure: 1. base; 2. movable frame; 3. rotating shaft; 4. rotating shaft; 5. central shaft; 6. valve body; 7. fixed seat; 8. first movable block; 9. rotating rod; 10. grinding piece; 11. rotating ring; 12. elastic limit pin; 13. limiter; 14. sliding cylinder; 15. threaded tube; 16. second movable block; 17. third movable block; 18. fourth movable block; 19. motor; 20. rotating handle. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figures 1 to 8 The present invention provides a technical solution: a regulating valve grinding processing device, comprising a valve body 6 and a clamping part capable of clamping the valve body 6, a central axis 5 coaxial with the center of the inner hole of the valve seat and rotatable is passed through the valve body 6, and two groups of grinding parts that can be slidably adjusted along the central axis 5 are provided on the outer wall of the central axis 5, and the grinding part comprises a plurality of grinding pieces 10 capable of adjusting the angle between the grinding piece 10 and the central axis 5, and when the grinding piece 10 rotates together with the central axis 5, a grinding conical surface that fits the inner wall of the valve seat can be formed.

[0037] When the device is in use, the valve body 6 is first clamped and fixed by the clamping part, and the positions of the two groups of grinding parts are adjusted to correspond to the conical surfaces of the inner holes of the two valve seats. Then, the central axis 5 is inserted into the valve body 6 together with the first grinding part and the second grinding part, and the central axis 5 is fixed so that it is coaxial with the center of the inner hole of the valve seat. Then, the grinding part is adjusted according to the type of valve seat. If the two groups of valve seats are arranged opposite to each other, the angle between the grinding piece 10 and the central axis 5 should be adjusted at this time, so that the grinding piece 10 is gradually supported outward until it is against the inner hole of the valve seat. If the two groups of valve seats are arranged in the same direction, the distance between the two groups of grinding parts is adjusted so that the grinding pieces 10 of the two groups of grinding parts can respectively abut against the conical surfaces of the inner holes of the two groups of valve seats. Then, the central axis 5 is driven to drive the two grinding parts to rotate together, and the two groups of valve seats in the valve body 6 are polished at the same time until the polishing is completed.

[0038] In this way, two groups of valve seats are polished at the same time by two groups of polishing parts, so that the double-seat valve does not need to be disassembled and reinstalled during the polishing process, thereby avoiding errors caused by repositioning that cause deviations in the cone surface angles of the inner holes of the two groups of valve seats, increasing or reducing the polishing allowance of the sealing surface of a certain valve seat, thereby improving the control accuracy of the device on the polishing allowance, and improving the sealing performance of the double-seat valve.

[0039] Furthermore, a first moving block 8 and a second moving block 16 are slidably installed on the outer wall of the central axis 5, and two rotating rods 9 rotatably connected to each other are rotatably installed between the first moving block 8 and the second moving block 16, and the rotating rods 9 are symmetrically arranged with the central axis 5 as the center line. The first moving block 8 and the second moving block 16 and the rotating rod 9 therebetween together constitute a first grinding portion, and a third moving block 17 and a fourth moving block 18 are also slidably installed on the outer wall of the central axis 5, and two rotating rods 9 rotatably connected to each other are also rotatably installed between the third moving block 17 and the fourth moving block 18, and the third moving block 17 and the fourth moving block 18 and the rotating rod 9 therebetween together constitute a second grinding portion, and a plurality of grinding members 10 are respectively fixed on the outer walls of the corresponding rotating rods 9.

[0040] According to the above embodiment, a specific embodiment of a grinding part is provided. Figure 5 After adjusting the positions of the second moving block 16 and the fourth moving block 18 according to the distance between the two sets of valve seats, the central axis 5 and the two sets of polished parts are inserted into the valve body 6, and the position of the central axis 5 is adjusted so that the central axis 5 is coaxial with the center of the inner hole of the valve seat and is in the center position. If the two sets of valve seats are set opposite to each other (see Figure 2 ), at this time, the first moving block 8 is adjusted to move toward the second moving block 16, and the third moving block 17 is adjusted to move toward the fourth moving block 18. Since the positions of the second moving block 16 and the fourth moving block 18 are fixed, the rotating rod 9 close to the second moving block 16 will rotate with the connection between the two as the center, so that the grinding piece 10 on the outer wall of the rotating rod 9 fits with the conical surface of the inner hole of the valve seat. Similarly, the rotating rod 9 close to the fourth moving block 18 also rotates with the connection between the two as the center, so that the grinding piece 10 on the outer wall of the rotating rod 9 fits with the conical surface of the inner hole of the other valve seat, and the valve seat is ground by the cone formed when the two groups of symmetrical grinding pieces 10 rotate, so as to complete the grinding of this type of valve seat.

[0041] If the two sets of valve seats are set in the same direction (see Figure 3 ), at this time, the second moving block 16 and the third moving block 17 are adjusted according to the distance between the two groups of valve seats and their positions are fixed, and then the first moving block 8 is driven to move toward the position of the second moving block 16 while the fourth moving block 18 is driven to move toward the direction of the third moving block 17, so that the two groups of rotating rods 9 that can be parallel to the inner conical surface of the valve seat are rotated toward the conical surface so that the grinding piece 10 is against the conical surface, and the valve seat is ground by the conical grinding surface formed by the rotation of the two groups of symmetrical grinding pieces 10, so that the grinding of this type of valve seat can be completed.

[0042] In this way, by fixing the positions of the second movable block 16 and the fourth movable block 18 and adjusting the positions of the first movable block 8 and the third movable block 17, two groups of relative grinding members 10 can simultaneously grind the inner holes of the valve seats set in opposite directions, and by fixing the positions of the second movable block 16 and the third movable block 17 and adjusting the positions of the first movable block 8 and the fourth movable block 18, two groups of grinding members 10 in the same direction can grind the inner holes of the valve seats set in the same direction. Different types of valve bodies 6 can be grinded by switching the grinding members 10 in different directions, thereby improving the scope of use of the device.

[0043] Furthermore, a fixing seat 7 located between the first grinding portion and the second grinding portion is fixedly installed on the outer wall of the central axis 5, and a rotating shaft 3 and a rotating shaft 4 are rotatably installed on both sides of the central axis 5, and the rotating shaft 3 and the rotating shaft 4 both pass through the first moving block 8, the second moving block 16, the third moving block 17, the fourth moving block 18 and the fixing seat 7, the rotating shaft 3 is connected to the first moving block 8 by a thread, and the outer wall of the rotating shaft 3 is sleeved with two threaded tubes 15 respectively threadedly connected to the third moving block 17 and the fourth moving block 18, the rotating shaft 4 is connected to the second moving block 16 by a thread, and the outer wall of the rotating shaft 4 is also sleeved with two threaded tubes 15 respectively threadedly connected to the third moving block 17 and the fourth moving block 18;

[0044] The regulating valve grinding processing device also includes a switching component, which has two states. In state one, the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 3 and the third moving block 17 is locked with the rotating shaft 3, and the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 4 and the fourth moving block 18 is locked with the rotating shaft 4; in state two, the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 3 and the fourth moving block 18 is locked with the rotating shaft 3, and the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 4 and the third moving block 17 is locked with the rotating shaft 4.

[0045] According to the above embodiment, it can be known that when the switching component is switched to state 1, the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 3 and the third moving block 17 is locked with the rotating shaft 3, and the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 4 and the fourth moving block 18 is locked with the rotating shaft 4, that is, when the rotating shaft 3 rotates, the first moving block 8 is driven to move in the direction of the second moving block 16 through the thread, and the third moving block 17 is driven to move in the direction of the fourth moving block 18 through the threaded tube 15. Since the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 4 and the third moving block 17 does not rotate with the rotating shaft 4 at this time, when the rotating shaft 3 rotates It will not interfere with the rotation of the rotating shaft 4. At this time, rotating the rotating shaft 4 can also drive the second movable block 16 and the fourth movable block 18 to approach each other through the thread. Similarly, the rotation of the rotating shaft 4 will not interfere with the rotation of the rotating shaft 3, and the positioning and locking of the second movable block 16 and the fourth movable block 18 can be completed respectively. At the same time, the position of the first movable block 8 and the third movable block 17 is adjusted, and the rotating rods 9 are made to approach or move away from each other by changing the distance between the two groups of grinding parts respectively, so that the opposite rotating rods 9 are made to approach or move away from each other, thereby changing the angle between the grinding piece 10 and the central axis 5 so that it abuts against the conical surface of the inner hole of the valve seat.

[0046] When the switching component is switched to state two, the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 3 and the fourth moving block 18 is locked with the rotating shaft 3, and the threaded tube 15 threadedly connected to the outer wall of the rotating shaft 4 and the third moving block 17 is locked with the rotating shaft 4, that is, when the rotating shaft 3 rotates, the first moving block 8 and the fourth moving block 18 are driven to move toward the second moving block 16 through the thread, so that the rotating rod 9 with two parallel grinding parts can be rotated and adjusted synchronously until the grinding piece 10 is against the conical surface of the inner hole of the valve seat, and when the rotating shaft 4 is rotated, the second moving block 16 and the third moving block 17 can be driven to move toward or away from the fourth moving block 18 together, so that a variety of complex adjustments can be achieved by limiting or moving different moving blocks, so that the grinding piece 10 can grind valve bodies 6 of different specifications or models.

[0047] In summary, when the two inner cone surfaces of the valve seat are arranged opposite to each other, that is, Figure 2 As shown, the two grinding parts 10 with the grinding parts far from each other provide a grinding effect, and when the two inner hole cone surfaces of the two valve seats are arranged in the same direction, that is, Figure 3 As shown, the two grinding parts are provided with grinding pieces 10 on the same side.

[0048] In this way, by positioning different moving blocks and moving the remaining moving blocks without interfering with each other, the rotating rod 9 and the grinding piece 10 can produce various angle changes to adapt to valve bodies 6 of different types or specifications, thereby improving the processing range of the valve body 6 of the present device, and due to the characteristics of the threaded connection, when the central axis 5 is driven to rotate, the rotating shaft 3 and the rotating shaft 4 can self-lock together, thereby fixing the positions of multiple groups of moving blocks and improving the grinding accuracy.

[0049] Furthermore, the switching assembly includes a limiter 13 rotatably mounted on the outer wall of the central axis 5, and the outer walls of the rotating shaft 3 and the rotating shaft 4 are slidably mounted with a sliding cylinder 14 through a flat key. The outer wall of the sliding cylinder 14 is provided with a spline groove, and the inner wall of the threaded tube 15 is provided with a spline that can be embedded in the spline groove. The outer walls of the two sliding cylinders 14 are rotatably mounted with a rotating ring 11, and the outer wall of the rotating ring 11 is provided with a limit pin. A sliding groove for sliding the limit pin is provided in the limiter 13, and the side wall of the limiter 13 is also provided with an arrow-shaped protrusion. The inner side wall of the groove opened on the central axis 5 is provided with an elastic limit pin 12, and one end of the elastic limit pin 12 is against the side wall of the arrow-shaped protrusion.

[0050] According to the above embodiment, a specific embodiment of a switching component is provided. Figure 5 When the limiter 13 is rotated by external force, the arrow-shaped protrusion on the side wall of the limiter 13 will squeeze the elastic limit pin 12 to retract it until the outer end of the elastic limit pin 12 passes over the top of the arrow. Under the action of the elastic force, the limiter 13 is quickly rotated to the other side, and the limit pin on the outer wall of the rotating ring 11 slides in the sliding groove, thereby driving the sliding cylinder 14 on the outer wall of the rotating shaft 3 to slide downward, disengage from the threaded tube 15 threadedly connected between the outer wall of the rotating shaft 3 and the third moving block 17, and insert into the threaded tube 15 threadedly connected between the outer wall of the rotating shaft 3 and the fourth moving block 18, and at the same time drive the sliding cylinder 14 on the outer wall of the rotating shaft 4 to be pulled out from the threaded tube 15 threadedly connected to the fourth moving block 18 and rise to connect with the threaded tube 15 in the third moving block 17, completing the direct switching of the switching component between the two states.

[0051] In this way, by driving the limiter 13 to rotate back and forth by a preset long rod or electric control, the switching between the two states of the switching component mentioned above can be completed, and the locked state after switching can be maintained under the pressure of the elastic limit pin 12.

[0052] Furthermore, the clamping part includes a base 1 that can be fixed on the ground, and two groups of movable frames 2 that can be horizontally moved and adjusted are fixedly installed on the upper surface of the base 1. The rotating shaft 3, the rotating shaft 4 and the central axis 5 are all rotatably installed between the two groups of movable frames 2. A clamping block is also slidably installed on the top surface of the base 1. The clamping blocks can move away from each other to internally support and clamp the valve body 6. A motor 19 is fixedly installed on the side wall of the movable frame 2, and the driving shaft of the motor 19 is fixedly connected to one end of the central axis 5.

[0053] According to the above embodiment, a specific embodiment of the clamping part is provided, in which the valve body 6 is internally supported and clamped by a plurality of clamping blocks that are relatively far apart, so as to improve the stability of the valve body 6 during the grinding process. After the middle shaft 5 enters the valve body 6 together with the rotating shaft 3 and the rotating shaft 4 and one end thereof is fixedly installed on the side wall of the movable frame 2, the two groups of movable frames 2 are then driven close to each other, and the middle shaft 5 is rotated together with the rotating shaft 3 and the rotating shaft 4 and installed between the two groups of movable frames 2, and the driving shaft of the motor 19 is fixed to one end of the middle shaft 5, thereby completing the clamping of the valve body 6 and the preparation work before grinding.

[0054] Furthermore, one end of the rotating shaft 3 and the rotating shaft 4 passes through the movable frame 2 and is fixedly mounted with a detachable rotating handle 20 .

[0055] According to the above-mentioned embodiment, it can be known that after the rotating shaft 3 and the rotating shaft 4 are inserted into the two groups of grinding parts together, the rotating shaft 3 and the rotating shaft 4 are rotatably installed between the two groups of movable frames 2 together, and the rotating shaft 3 and the rotating shaft 4 can be driven to rotate respectively by installing a rotating handle 20 at the end of the rotating shaft 3 and the rotating shaft 4, or the rotating shaft 3 and the rotating shaft 4 can be driven to rotate by an electric control method, and by adopting an electric control method (such as motor drive), the rotating rod 9 can be opened or closed by rotating the rotating shaft 3 and the rotating shaft 4 during the grinding process, so that the grinding piece 10 can be temporarily separated from the grinding position during the grinding process, and then the grinding debris adhered to it can be shaken off, thereby further improving the grinding accuracy.

[0056] Furthermore, laser rangefinders are fixedly mounted on the ends of the second moving block 16 and the fourth moving block 18 that are away from each other.

[0057] According to the above embodiment, when the central axis 5 together with the first polishing portion and the second polishing portion are inserted into the valve body 6, the distance between the second moving block 16 and the fourth moving block 18 and the two valve seats is measured by a laser rangefinder, and the positions of the second moving block 16 and the fourth moving block 18 can be corrected or confirmed.

[0058] Furthermore, the rotating rods 9 included in the first polishing part and the second polishing part are distributed in a ring shape with the central axis 5 as the center.

[0059] According to the above embodiment, it can be known that when the valve seat is polished, the rotating rod 9 rotates along with the central axis 5. At this time, the polishing piece 10 on the outer wall of the rotating rod 9 abuts against the conical surface of the inner hole of the valve seat, providing the rotating rod 9 with a friction force in the opposite direction of rotation, so that the shaft connecting the rotating rod 9 and the remaining components is subjected to centripetal shear force, which can easily cause the shaft to break or twist, thereby affecting the polishing.

[0060] Furthermore, a through hole communicating with the valve body 6 is provided on the top surface of the base 1, and the through hole is connected with an external air suction device.

[0061] According to the above implementation mode, it can be seen that Figure 2 When the two groups of grinding parts are grinding the valve seat, the grinding debris will fall downward. At this time, the debris in the valve body 6 can be cleaned and collected by an external suction device to prevent the debris from participating in secondary grinding and affecting the surface roughness of the sealing surface.

[0062] A method for using a regulating valve grinding device comprises the following steps:

[0063] Step 1: First, the valve body 6 is clamped and fixed by the clamping part, and then the distance between the two valve seats is measured by an external measuring device;

[0064] Step 2: According to the measurement results, the positions of the second moving block 16 and the fourth moving block 18 are adjusted and fixed by the rotating shaft 3 and the rotating shaft 4, and then the central axis 5 is inserted into the valve body 6 together with the first polishing part and the second polishing part, and the central axis 5 is fixed so that it is coaxial with the center of the inner hole of the valve seat;

[0065] Step 3: Adjust the state of the switching assembly according to the type of valve seat. If the two groups of valve seats are arranged opposite to each other, switch the switching assembly to state 1, and rotate the rotating shaft 3 and the rotating shaft 4 to move the first moving block 8 toward the second moving block 16 and the third moving block 17 toward the fourth moving block 18, thereby driving the rotating rods 9 between the two groups of grinding parts to rotate relative to each other so that the grinding piece 10 abuts against the conical surface of the valve seat sealing surface;

[0066] Step 4: If the two sets of valve seats are arranged in the same direction, the switching assembly is switched to state 2, and the rotating shaft 3 and the rotating shaft 4 are rotated to move the first moving block 8 toward the second moving block 16 and the fourth moving block 18 toward the third moving block 17, so that the polishing piece 10 abuts against the inner hole section of the valve seat;

[0067] Step 5: After switching the valve seat type, after step 3 or step 4, drive the central axis 5 to drive the two grinding parts to rotate together, and grind the two sets of valve seats in the valve body 6 at the same time. After the grinding is completed, replace the valve body 6 and repeat the above steps 1 to 4.

[0068] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A regulating valve grinding device, comprising a valve body (6) and a clamping portion capable of clamping the valve body (6), characterized in that: The valve body (6) is provided with a central axis (5) which is coaxial with the center of the inner hole of the valve seat and can rotate. The outer wall of the central axis (5) is provided with two groups of grinding parts which can be slidably adjusted along the central axis (5). The grinding parts include a plurality of grinding pieces (10) which can adjust the angle between the grinding pieces and the central axis (5). When the grinding pieces (10) rotate together with the central axis (5), a grinding conical surface which fits the inner wall of the valve seat can be formed.

2. The regulating valve grinding device according to claim 1, characterized in that: The outer wall of the central axis (5) is slidably mounted with a first moving block (8) and a second moving block (16); two rotating rods (9) rotatably connected to each other are rotatably mounted between the first moving block (8) and the second moving block (16); the rotating rods (9) are symmetrically arranged with the central axis (5) as the center line; the first moving block (8) and the second moving block (16) and the rotating rod (9) therebetween together form a first grinding portion; the outer wall of the central axis (5) is also slidably mounted with a third moving block (17) and a fourth moving block (18); two rotating rods (9) rotatably connected to each other are also rotatably mounted between the third moving block (17) and the fourth moving block (18); the third moving block (17) and the fourth moving block (18) and the rotating rod (9) therebetween together form a second grinding portion; and a plurality of the grinding members (10) are respectively fixed on the outer walls of the corresponding rotating rods (9).

3. The regulating valve grinding device according to claim 2, characterized in that: The outer wall of the central axis (5) is fixedly mounted with a fixed seat (7) located between the first grinding part and the second grinding part; the two sides of the central axis (5) are rotatably mounted with a rotating shaft (3) and a rotating shaft (4); the rotating shaft (3) and the rotating shaft (4) both pass through the first moving block (8), the second moving block (16), the third moving block (17), the fourth moving block (18) and the fixed seat (7); the rotating shaft (3) is connected to the first moving block (8) by a thread; the outer wall of the rotating shaft (3) is sleeved with two threaded tubes (15) respectively threadedly connected to the third moving block (17) and the fourth moving block (18); the rotating shaft (4) is connected to the second moving block (16) by a thread; the outer wall of the rotating shaft (4) is also sleeved with two threaded tubes (15) respectively threadedly connected to the third moving block (17) and the fourth moving block (18); The regulating valve grinding processing device also includes a switching component, which has two states. In state one, the threaded tube (15) threadedly connected to the outer wall of the rotating shaft (3) and the third moving block (17) is locked with the rotating shaft (3), and the threaded tube (15) threadedly connected to the outer wall of the rotating shaft (4) and the fourth moving block (18) is locked with the rotating shaft (4); in state two, the threaded tube (15) threadedly connected to the outer wall of the rotating shaft (3) and the fourth moving block (18) is locked with the rotating shaft (3), and the threaded tube (15) threadedly connected to the outer wall of the rotating shaft (4) and the third moving block (17) is locked with the rotating shaft (4).

4. The regulating valve grinding device according to claim 3, characterized in that: The switching assembly comprises a limiter (13) rotatably mounted on the outer wall of the central axis (5); the outer walls of the rotating shaft (3) and the rotating shaft (4) are slidably mounted with a sliding cylinder (14) through a flat key; the outer wall of the sliding cylinder (14) is provided with a spline groove, and the inner wall of the threaded tube (15) is provided with a spline that can be embedded in the spline groove; the outer walls of the two sliding cylinders (14) are rotatably mounted with a rotating ring (11); the outer wall of the rotating ring (11) is provided with a limit pin; the limiter (13) is provided with a sliding groove for sliding the limit pin; the side wall of the limiter (13) is also provided with an arrow-shaped protrusion; the inner side wall of the groove provided on the central axis (5) is provided with an elastic limit pin (12), and one end of the elastic limit pin (12) is against the side wall of the arrow-shaped protrusion.

5. The regulating valve grinding device according to claim 3, characterized in that: The clamping part comprises a base (1) that can be fixed on the ground, two groups of movable frames (2) that can be horizontally moved and adjusted are fixedly installed on the upper surface of the base (1), the rotating shaft (3), the rotating shaft (4) and the central axis (5) are all rotatably installed between the two groups of movable frames (2), and a clamping block is also slidably installed on the top surface of the base (1), and the clamping blocks can move away from each other to internally support and clamp the valve body (6), and a motor (19) is fixedly installed on the side wall of the movable frame (2), and the driving shaft of the motor (19) is fixedly connected to one end of the central axis (5).

6. The regulating valve grinding device according to claim 5, characterized in that: One end of the rotating shaft (3) and the rotating shaft (4) passes through the movable frame (2) and is fixedly mounted with a detachable rotating handle (20).

7. The regulating valve grinding device according to claim 3, characterized in that: Laser rangefinders are fixedly mounted on the ends of the second moving block (16) and the fourth moving block (18) that are away from each other.

8. The regulating valve grinding device according to claim 2, characterized in that: The first polishing part and the second polishing part include a plurality of rotating rods (9) distributed in a ring shape with the central axis (5) as the center.

9. The regulating valve grinding device according to claim 5, characterized in that: The top surface of the base (1) is provided with a through hole communicating with the valve body (6), and the through hole is connected to an external air suction device.

10. A method for using the regulating valve grinding device according to claim 3, characterized in that: The following steps are involved: Step 1: firstly, the valve body (6) is clamped and fixed by the clamping part, and then the distance between the two valve seats is measured by an external measuring device; Step 2: adjusting the positions of the second movable block (16) and the fourth movable block (18) according to the measurement results and fixing them via the rotating shaft (3) and the rotating shaft (4), then inserting the central shaft (5) together with the first polishing portion and the second polishing portion into the valve body (6) and fixing the central shaft (5) so that it is coaxial with the center of the inner hole of the valve seat; Step 3: Adjust the state of the switching assembly according to the type of valve seat. If the two groups of valve seats are arranged opposite to each other, switch the switching assembly to state 1, and rotate the rotating shaft (3) and the rotating shaft (4) to move the first moving block (8) toward the second moving block (16) and the third moving block (17) toward the fourth moving block (18), thereby driving the rotating rods (9) between the two groups of grinding parts to rotate relative to each other so that the grinding piece (10) abuts against the conical surface of the valve seat sealing surface; Step 4: If the two sets of valve seats are arranged in the same direction, the switching assembly is switched to state 2, and the rotating shaft (3) and the rotating shaft (4) are rotated to move the first moving block (8) toward the second moving block (16) and the fourth moving block (18) toward the third moving block (17), so that the grinding piece (10) abuts against the inner hole section of the valve seat; Step 5: After switching the valve seat type, after step 3 or step 4, drive the central axis (5) to drive the two grinding parts to rotate together, and grind the two sets of valve seats in the valve body (6) at the same time. After the grinding is completed, replace the valve body (6) and repeat the above steps 1 to 4.

Images