Ball core clamping device of eccentric semi-ball valve

Abstract

The ball core clamping device comprises a workbench, a supporting box, a clamping mechanism, a scrap collecting box, a transverse moving mechanism, a bidirectional pressure applying mechanism, a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate are fixed to the workbench, and the supporting box is arranged between the first vertical plate and the second vertical plate; a transverse moving mechanism used for driving the supporting box to move is installed on the second vertical plate, a plurality of clamping mechanisms are installed on the supporting box, the multiple clamping mechanisms are different in size, and a bidirectional pressure applying mechanism used for driving the clamping mechanisms to conduct clamping is installed on the workbench. The ball core clamping device is convenient to adjust, ball cores with different diameters can be conveniently clamped, the fitting performance with the ball cores is good, and clamping is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of eccentric semi-ball valve processing, in particular to a ball core clamping device of an eccentric semi-ball valve. Background Art

[0002] The eccentric semi-ball valve is a relatively new type of ball valve. It has some advantages unique to its structure, such as no friction when opening and closing, the seal is not easy to wear, and the opening and closing torque is small. The eccentric semi-ball valve is suitable for sewage treatment, pulp, alumina, urban heating and heating where strict standards are required. It is also suitable for power plants, hydraulic deslagging or gas pipeline control. In terms of appearance and structure, it is divided into top-mounted and side-mounted. The top-mounted type is mainly used for media with very serious erosion and wear, while the side-mounted type has a compact structure and a light valve.

[0003] The eccentric semi-ball valve is a common type of valve, and its structure usually includes the valve body, eccentric ball core, active (slave) shaft, upper (lower) sleeve, ball crown, pressure ring, inner (outer) valve seat and other main components.

[0004] The eccentric ball core is the core component of the eccentric semi-ball valve. When producing the eccentric semi-ball valve, the eccentric ball core needs to be clamped for fine processing. Most of the existing ball core clamping devices are special clamps that can only adapt to ball cores of one diameter. In addition, since the surface of the eccentric ball core is relatively smooth, the existing clamping devices all perform line contact clamping when clamping the eccentric ball core, resulting in insufficient clamping stability. Therefore, in view of the above situation, it is urgent to develop a ball core clamping device for eccentric semi-ball valves that is easy to adjust, convenient for clamping ball cores of different diameters, good fit with the ball core, and more stable clamping, so as to overcome the shortcomings in current practical applications and meet current needs. Summary of the invention

[0005] The object of the present invention is to provide a ball core clamping device for an eccentric semi-ball valve to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A ball core clamping device for an eccentric hemispherical valve comprises a workbench, a support box, a clamping mechanism, a debris collection box, a transverse movement mechanism, a bidirectional pressure mechanism, a first vertical plate and a second vertical plate, wherein the first vertical plate and the second vertical plate are fixed on the workbench, a support box is arranged between the first vertical plate and the second vertical plate, a transverse movement mechanism for driving the support box to move is installed on the second vertical plate, a plurality of clamping mechanisms are installed on the support box, and the sizes of the plurality of clamping mechanisms are different, a bidirectional pressure mechanism for driving the clamping mechanism to clamp is installed on the workbench, and the clamping mechanism comprises: an arc-shaped A clamping piece, a top stopper, a connecting guide rod, a stopper and a compression spring, the number of the arc-shaped clamping pieces is two, the arc-shaped clamping pieces are in an arc shape, a top stopper is fixed to the upper side of each of the arc-shaped clamping pieces, a connecting guide rod that passes through the support box is fixed to the side of each of the arc-shaped clamping pieces, the connecting guide rod is slidably connected to the support box, a stopper is fixed to the outer end of each of the connecting guide rods, a compression spring is installed on the outer side of each of the connecting guide rods, one end of the compression spring is fixed to the stopper, and the other end of the compression spring is fixed to the support box.

[0008] Preferably, anti-slip grooves are arranged on the inner side of the arc-shaped clamping piece.

[0009] Preferably, the inner diameters of the arc-shaped clamping pieces in the plurality of clamping mechanisms are different.

[0010] Preferably, two sliders are fixed on the right side of the support box, a linear slide rail is fixed on the first vertical plate, and the slider is slidably mounted on the linear slide rail.

[0011] Preferably: the transverse movement mechanism includes: a first motor, a lead screw, a rolling nut and an adapter block, the first motor is fixed to the second vertical plate, the lead screw is rotatably connected to the second vertical plate, the output shaft of the first motor is connected to the lead screw, a rolling nut is installed on the lead screw, an adapter block is fixed on the rolling nut, and the adapter block is fixed to one side of the support box.

[0012] Preferably: the bidirectional pressure mechanism comprises: a bidirectional screw, a first external thread, a second external thread, a first threaded sleeve, a second threaded sleeve, a limit rod, a pressure rod and a driving mechanism, the bidirectional screw is rotatably connected to the workbench, the left half of the bidirectional screw is provided with a first external thread, the outer side of the first external thread is provided with a first threaded sleeve matching therewith, the right half of the bidirectional screw is provided with a second external thread, the outer side of the second external thread is provided with a second threaded sleeve matching therewith, a pressure rod is fixed on the upper sides of the first threaded sleeve and the second threaded sleeve, the two pressure rods are arranged opposite to each other, a limit rod inserted into the workbench is fixed on the lower sides of the first threaded sleeve and the second threaded sleeve, the first external thread and the second external thread have opposite rotation directions, and a driving mechanism for driving the bidirectional screw to rotate is provided on the workbench.

[0013] Preferably, the limiting rod is slidably connected to the workbench, and the workbench is provided with a limiting sliding groove for the movement of the limiting rod.

[0014] Preferably: the driving mechanism includes: a second motor, a first gear and a second gear, the second motor is fixed on the workbench, the first gear is installed on the output shaft of the second motor, a second gear meshing with the first gear is installed on one side of the first gear, and the second gear is installed on the bidirectional screw.

[0015] Preferably, a debris collection box is provided in the support box below the clamping mechanism, the debris collection box is slidably connected to the support box, and a handle is fixed to the end of the debris collection box.

[0016] The beneficial effects of the present invention are as follows: the ball core clamping device of the eccentric hemispherical valve selects a clamping mechanism corresponding to the size according to the outer diameter of the hemispherical valve core to be processed. After the selection is made, the lead screw is driven to rotate by the first motor, the rolling nut and the adapter block are driven to move by the rotation of the lead screw, the support box is driven to move by the adapter block, and the multiple clamping mechanisms are driven to move by the support box, so that the selected clamping mechanism extends to the two-way pressure-applying mechanism, and then the hemispherical valve core is placed between the two arc-shaped clamping pieces, the upper end of the hemispherical valve core is blocked by the top block, and then the first gear and the second gear are driven to rotate by the second motor, the two-way screw is driven to rotate by the rotation of the second gear, the first threaded sleeve and the second threaded sleeve are driven to move toward each other by the rotation of the two-way screw, the two pressure rods are driven to move toward each other by the first threaded sleeve and the second threaded sleeve, the two connecting guide rods are squeezed by the two pressure rods, and the two arc-shaped clamping pieces are driven to approach each other by the two connecting guide rods, so that the two arc-shaped clamping pieces clamp the hemispherical valve core. In summary, the present invention is easy to adjust, convenient for clamping ball cores of different diameters, has good fit with the ball core, and is more stably clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the use state of the present invention.

[0019] Figure 3 It is a schematic diagram of the partial structure of the present invention Figure 1 .

[0020] Figure 4 It is a schematic diagram of the partial structure of the present invention Figure 2 .

[0021] Figure 5 It is a schematic diagram of the partial structure of the present invention Figure 3 .

[0022] Figure 6 It is a schematic diagram of the partial structure of the present invention Figure 4 .

[0023] Figure 7 It is a schematic diagram of the partial structure of the present invention Figure 5 .

[0024] Legend:

[0025] 1. Workbench; 101. Limiting slide; 2. Support box; 201. Linear slide; 202. Slider; 3. Clamping mechanism; 301. Arc clamping plate; 302. Top stopper; 303. Connecting guide rod; 304. Stopper; 305. Compression spring; 4. Debris collection box; 401. Handle; 5. Transverse movement mechanism; 501. First motor; 502. Lead screw; 503. Rolling nut; 504. Adapter block; 6. Bidirectional pressure mechanism; 601. Bidirectional screw; 602. First external thread; 603. Second external thread; 604. First threaded sleeve; 605. Second threaded sleeve; 606. Limiting rod; 607. Pressure rod; 608. Driving mechanism; 6081. Second motor; 6082. First gear; 6083. Second gear; 7. First vertical plate; 8. Second vertical plate; 9. Hemispherical valve core. DETAILED DESCRIPTION

[0026] 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.

[0027] Specific examples are given below.

[0028] See also Figure 1 to Figure 7In an embodiment of the present invention, a ball core clamping device for an eccentric hemispherical valve comprises a workbench 1, a support box 2, a clamping mechanism 3, a debris collection box 4, a transverse movement mechanism 5, a bidirectional pressure mechanism 6, a first vertical plate 7, a second vertical plate 8 and a hemispherical valve core 9. The workbench 1 is fixed with a first vertical plate 7 and a second vertical plate 8, a support box 2 is arranged between the first vertical plate 7 and the second vertical plate 8, two sliders 202 are fixed to the right side of the support box 2, a linear slide rail 201 is fixed to the first vertical plate 7, the slider 202 is slidably installed on the linear slide rail 201, a transverse movement mechanism 5 for driving the support box 2 to move is installed on the second vertical plate 8, a plurality of clamping mechanisms 3 are installed on the support box 2, and the sizes of the plurality of clamping mechanisms 3 are different so as to clamp hemispherical valve cores 9 of different sizes, a bidirectional pressure mechanism 6 for driving the clamping mechanism 3 to clamp is installed on the workbench 1, and the clamping mechanism 3 A debris collection box 4 is provided in the support box 2 below, and the debris collection box 4 is slidably connected to the support box 2. A handle 401 is fixed to the end of the debris collection box 4, through which the debris generated during the processing of the hemispherical valve core 9 is collected. After use, the debris collection box 4 can be pulled out by the handle 401 so as to pour out the debris in the debris collection box 4. When in use, a clamping mechanism 3 corresponding to the size of the hemispherical valve core 9 to be processed is selected. After selection, the support box 2 is driven to move by the transverse movement mechanism 5, and the support box 2 drives multiple clamping mechanisms 3 to move, so that the selected clamping mechanism 3 extends to the two-way pressure mechanism 6, and then the hemispherical valve core 9 is placed in the clamping mechanism 3, and then the two-way pressure mechanism 6 is used to apply pressure to the clamping mechanism 3, so that the clamping mechanism 3 clamps the hemispherical valve core 9, and then the hemispherical valve core 9 can be processed according to needs after clamping.

[0029] The clamping mechanism 3 includes: an arc-shaped clamping piece 301, a top stopper 302, a connecting guide rod 303, a stopper 304 and a compression spring 305. The number of the arc-shaped clamping pieces 301 is two, and the arc-shaped clamping piece 301 is in an arc shape so that it can better fit the hemispherical valve core 9. The inner side of the arc-shaped clamping piece 301 is provided with anti-slip grooves to increase the friction between the arc-shaped clamping piece 301 and the hemispherical valve core 9. A top stopper 302 is fixed on the upper side of each of the arc-shaped clamping pieces 301, and a connecting guide rod 3 that runs through the support box 2 is fixed on the side of each of the arc-shaped clamping pieces 301. 03, the connecting guide rod 303 is slidably connected to the support box 2, and a baffle 304 is fixed to the outer end of each connecting guide rod 303, and a compression spring 305 is installed on the outer side of each connecting guide rod 303, one end of the compression spring 305 is fixed to the baffle 304, and the other end of the compression spring 305 is fixed to the support box 2. When in use, the hemispherical valve core 9 is placed between the two arc-shaped clamping pieces 301, and the upper end of the hemispherical valve core 9 is blocked by the top stopper 302, and then the two arc-shaped clamping pieces 301 are driven by the two-way pressure mechanism 6 to clamp the hemispherical valve core 9.

[0030] The inner diameters of the arc-shaped clamping pieces 301 in the plurality of clamping mechanisms 3 are different so as to clamp the hemispherical valve cores 9 with different outer diameters.

[0031] The transverse movement mechanism 5 includes: a first motor 501, a screw 502, a rolling nut 503 and an adapter block 504. The first motor 501 is fixed on the second vertical plate 8, and the screw 502 is rotatably connected to the second vertical plate 8. The output shaft of the first motor 501 is connected to the screw 502. A rolling nut 503 is installed on the screw 502, and an adapter block 504 is fixed on the rolling nut 503. The adapter block 504 is fixed to one side of the support box 2. When in use, the screw 502 is driven to rotate by the first motor 501, and the rolling nut 503 and the adapter block 504 are driven to move by the rotation of the screw 502, and the support box 2 is driven to move by the adapter block 504.

[0032] The bidirectional pressure mechanism 6 includes: a bidirectional screw 601, a first external thread 602, a second external thread 603, a first thread sleeve 604, a second thread sleeve 605, a limit rod 606, a pressure rod 607 and a driving mechanism 608. The bidirectional screw 601 is rotatably connected to the workbench 1. The left half of the bidirectional screw 601 is provided with a first external thread 602, and a first thread sleeve 604 matching with the first external thread 602 is installed on the outer side of the first external thread 602. The right half of the bidirectional screw 601 is provided with a second external thread 603, and the second external thread 603 is provided with a A second threaded sleeve 605 is installed on the outside to match it. A pressure rod 607 is fixed on the upper side of the first threaded sleeve 604 and the second threaded sleeve 605. The two pressure rods 607 are arranged opposite to each other. A limit rod 606 inserted into the workbench 1 is fixed on the lower side of the first threaded sleeve 604 and the second threaded sleeve 605. The limit rod 606 is slidably connected to the workbench 1. A limit slide groove 101 for moving the limit rod 606 is provided on the workbench 1. The movement of the first threaded sleeve 604 and the second threaded sleeve 605 is controlled by the limit rod 606. The first external thread 602 and the second external thread 603 have opposite rotation directions, so that when the bidirectional screw 601 rotates, the first thread sleeve 604 and the second thread sleeve 605 move in opposite directions. The workbench 1 is provided with a driving mechanism 608 for driving the bidirectional screw 601 to rotate. The driving mechanism 608 includes: a second motor 6081, a first gear 6082 and a second gear 6083. The second motor 6081 is fixed on the workbench 1. The output shaft of the second motor 6081 is provided with a A first gear 6082 is provided with a second gear 6083 meshing with the first gear 6082 on one side thereof, and the second gear 6083 is installed on the bidirectional screw 601. When in use, the first gear 6082 and the second gear 6083 are driven to rotate by the second motor 6081, and the bidirectional screw 601 is driven to rotate by the rotation of the second gear 6083, and the first threaded sleeve 604 and the second threaded sleeve 605 are driven to move toward each other by the rotation of the bidirectional screw 601, and the two pressure rods 607 are driven to move toward each other by the first threaded sleeve 604 and the second threaded sleeve 605.

[0033] Working principle: The ball core clamping device of the eccentric hemispherical valve selects the clamping mechanism 3 corresponding to the size according to the outer diameter of the hemispherical valve core 9 to be processed. After the selection is made, the first motor 501 drives the lead screw 502 to rotate, and the lead screw 502 rotates to drive the rolling nut 503 and the adapter block 504 to move, and the adapter block 504 drives the support box 2 to move, and the support box 2 drives multiple clamping mechanisms 3 to move, so that the selected clamping mechanism 3 extends to the two-way pressure mechanism 6, and then the hemispherical valve core 9 is placed between the two arc-shaped clamping pieces 301, and the top stopper 302 is used to hold the hemispherical valve core 9 The upper end is blocked, and then the first gear 6082 and the second gear 6083 are driven to rotate by the second motor 6081, and the bidirectional screw 601 is driven to rotate by the rotation of the second gear 6083, and the first threaded sleeve 604 and the second threaded sleeve 605 are driven to move toward each other by the rotation of the bidirectional screw 601, and the two pressure rods 607 are driven to move toward each other by the first threaded sleeve 604 and the second threaded sleeve 605, and the two connecting guide rods 303 are squeezed by the two pressure rods 607, and the two arc-shaped clamping pieces 301 are driven to approach each other by the two connecting guide rods 303, so that the two arc-shaped clamping pieces 301 clamp the hemispherical valve core 9.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball core clamping device for an eccentric hemispherical valve, characterized in that: The invention comprises a workbench (1), a support box (2), a clamping mechanism (3), a debris collection box (4), a transverse movement mechanism (5), a bidirectional pressure mechanism (6), a first vertical plate (7) and a second vertical plate (8), wherein the first vertical plate (7) and the second vertical plate (8) are fixed on the workbench (1), a support box (2) is arranged between the first vertical plate (7) and the second vertical plate (8), a transverse movement mechanism (5) for driving the support box (2) to move is installed on the second vertical plate (8), a plurality of clamping mechanisms (3) are installed on the support box (2), and the sizes of the plurality of clamping mechanisms (3) are different, and a bidirectional pressure mechanism (6) for driving the clamping mechanisms (3) to clamp is installed on the workbench (1), and the clamping mechanisms (3) comprise: an arc-shaped clamping sheet (301), a top stopper (302), a connecting guide rod (303), a baffle (304) and a compression spring (305), the number of the arc-shaped clamping pieces (301) is two, the arc-shaped clamping pieces (301) are in the shape of an arc, a top baffle (302) is fixed on the upper side of each arc-shaped clamping piece (301), a connecting guide rod (303) penetrating the support box (2) is fixed on the side of each arc-shaped clamping piece (301), the connecting guide rod (303) is slidably connected to the support box (2), a baffle (304) is fixed on the outer end of each connecting guide rod (303), a compression spring (305) is installed on the outer side of each connecting guide rod (303), one end of the compression spring (305) is fixed to the baffle (304), and the other end of the compression spring (305) is fixed to the support box (2).

2. The ball core clamping device of the eccentric hemispherical valve according to claim 1, characterized in that: The inner side of the arc-shaped clamping piece (301) is provided with anti-slip grooves.

3. The ball core clamping device of the eccentric hemispherical valve according to claim 1, characterized in that: The inner diameters of the arc-shaped clamping pieces (301) in the plurality of clamping mechanisms (3) are different.

4. The ball core clamping device of the eccentric hemispherical valve according to claim 1, characterized in that: Two sliders (202) are fixed on the right side of the support box (2), a linear slide rail (201) is fixed on the first vertical plate (7), and the slider (202) is slidably mounted on the linear slide rail (201).

5. The ball core clamping device of the eccentric semi-ball valve according to claim 1, characterized in that: The transverse movement mechanism (5) comprises: a first motor (501), a lead screw (502), a rolling nut (503) and an adapter block (504); the first motor (501) is fixed on the second vertical plate (8); the lead screw (502) is rotatably connected to the second vertical plate (8); the output shaft of the first motor (501) is connected to the lead screw (502); a rolling nut (503) is installed on the lead screw (502); the adapter block (504) is fixed on the rolling nut (503); and the adapter block (504) is fixed to one side of the support box (2).

6. The ball core clamping device of the eccentric semi-ball valve according to any one of claims 1 to 5, characterized in that: The bidirectional pressure mechanism (6) comprises: a bidirectional screw (601), a first external thread (602), a second external thread (603), a first thread sleeve (604), a second thread sleeve (605), a limit rod (606), a pressure rod (607) and a driving mechanism (608); the bidirectional screw (601) is rotatably connected to the workbench (1); the left half of the bidirectional screw (601) is provided with a first external thread (602); the outer side of the first external thread (602) is provided with a first thread sleeve (604) matched therewith; the right half of the bidirectional screw (601) is provided with a second external thread (603) A second threaded sleeve (605) matching with the second external thread (603) is installed on the outer side thereof, a pressure rod (607) is fixed on the upper side of each of the first threaded sleeve (604) and the second threaded sleeve (605), and the two pressure rods (607) are arranged opposite to each other, a limiting rod (606) inserted into the workbench (1) is fixed on the lower side of each of the first threaded sleeve (604) and the second threaded sleeve (605), the first external thread (602) and the second external thread (603) have opposite rotation directions, and a driving mechanism (608) for driving the bidirectional screw (601) to rotate is arranged on the workbench (1).

7. The ball core clamping device of the eccentric semi-ball valve according to claim 6, characterized in that: The limiting rod (606) is slidably connected to the workbench (1), and a limiting sliding groove (101) for moving the limiting rod (606) is provided on the workbench (1).

8. The ball core clamping device of the eccentric semi-ball valve according to claim 6, characterized in that: The driving mechanism (608) comprises: a second motor (6081), a first gear (6082) and a second gear (6083); the second motor (6081) is fixed on the workbench (1); the first gear (6082) is installed on the output shaft of the second motor (6081); a second gear (6083) meshing with the first gear (6082) is installed on one side of the first gear (6082); and the second gear (6083) is installed on the bidirectional screw (601).

9. The ball core clamping device of the eccentric semi-ball valve according to claim 1, characterized in that: A debris collection box (4) is provided in the support box (2) below the clamping mechanism (3); the debris collection box (4) is slidably connected to the support box (2); a handle (401) is fixed to the end of the debris collection box (4).

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