High-pressure supporting plate fixing ball valve

Abstract

The invention belongs to the technical field of valves, particularly relates to a high-pressure supporting plate fixed ball valve, and aims to solve the problem that a gap at a sealing position is easily enlarged to cause leakage due to overlarge pressure difference of a valve ball in the prior art, and provides the following scheme: the high-pressure supporting plate fixed ball valve comprises a valve body shell which is integrally of a horizontal tubular structure, an annular protruding edge is reserved on the circumferential inner wall of the end, close to the valve body shell, of the valve body shell, the section of the annular protruding edge is in a right trapezoid shape, a second inner clamping ring is slidably connected to the position, close to the center of the valve body shell, of the side face of the annular protruding edge in an inserted mode, and a first inner clamping ring is slidably connected to the circumferential inner wall of the end, away from the annular protruding edge, of the valve body shell. The opposite sides of the first inner clamping ring and the second inner clamping ring are each provided with an equal-radius spherical clamping face, and the same valve ball is rotationally connected between the two spherical clamping faces. The valve ball can be tightly extruded from the two opposite sides during working, the pressure difference can be compensated in time, disassembly, assembly and maintenance are facilitated, and gaps caused by the fact that the valve ball deviates to one side are prevented.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a high-pressure support plate fixed ball valve. Background Art

[0002] The high-pressure support plate fixed ball valve is a control device used to cut off and regulate the flow of high-pressure fluids. It is currently mainly used in industries such as petroleum, natural gas, chemicals, oil refining, and power generation. It combines the excellent sealing properties of the ball valve with the strength of the high-pressure support plate, and has the characteristics of strong stability and high reliability.

[0003] After searching, it is found that the high-pressure support plate fixed ball valve in the prior art usually uses a metal ball as the valve core, and the ball is rotated to open and close the fluid. The high-pressure ball valve pays more attention to the firmness and sealing performance of the valve body in structure; however, since the device is used in high-pressure liquid for a long time, it will cause a huge pressure difference on both sides of the valve ball when the valve is just closed or opened. If this pressure difference cannot be eliminated well, it will cause the valve stem used to drive the switch to be distorted, and even cause the gap of the sealing ring to become larger and fail. Summary of the invention

[0004] In view of the technical problem in the prior art that the valve ball is prone to leakage due to the large pressure difference, the gap at the sealing part becomes larger, and the present invention adopts the following technical solution: A high-pressure support plate fixed ball valve, comprising a valve body shell with an overall horizontal tubular structure, a circular ridge is reserved for the inner wall of the valve body shell near one end, the cross-section of the circular ridge is a right-angled trapezoid, and an inner clamping ring 2 is slidably inserted at the side of the circular ridge near the center of the valve body shell, and an inner clamping ring 1 is slidably connected to the inner wall of the circumference of the end of the valve body shell away from the annular ridge, and spherical clamping surfaces of equal radius are respectively opened on the opposite sides of the inner clamping ring 1 and the inner clamping ring 2, and the same valve ball is rotatably connected between the two spherical clamping surfaces, and a water hole that penetrates the center of the ball and has the center line of the hole horizontal is opened on the side of the valve ball; a convex column of a cylindrical structure is reserved near the top of the circumferential outer wall of the valve body shell, and a vertical through hole 1 is opened at the top of the convex column and communicates with the inside of the valve body shell, and a through hole 1 fixedly connected to the valve ball is rotatably connected in the through hole 1. A composite rotating shaft, a worm wheel disk is fixed on the top of the composite rotating shaft; a driver fixing box is sleeved and fixed on the top of the boss, and a worm extending horizontally forward and backward is inserted inside the driver fixing box, the worm and the worm wheel disk are meshed with each other, and a rotating disk is fixed on the other end of the worm; a tightening spring and a compression spring distributed at equal distances are fixed on the opposite sides of the inner snap ring 1 and the inner snap ring 2 respectively; and a clamping ring is sleeved and fixed on the end of the inner snap ring 1 away from the valve ball, and the clamping ring is detachably fixed to the port of the valve body shell; through the large-port type valve body shell set, in conjunction with the two inner snap rings 1 and 2 inside which can slide toward the middle and form full-time extrusion, the valve ball can be tightly squeezed from opposite sides during work, which is not only convenient for disassembly and maintenance but also prevents the valve ball from biased to one side and causing a gap.

[0005] A further configuration of the present invention is that a plurality of through holes are formed at one end of the valve body shell away from the annular ridge, and a flange hole corresponding to the through hole is reserved near the through hole of the clamping ring, and the same perforated gasket is fixed between the side of the clamping ring and the end of the valve body shell; a tensioning bolt is inserted through the through hole, and the tensioning bolt passes through the through hole, the perforated gasket and the flange hole in turn and is screwed with a top nut to tightly fix the clamping ring to the end of the valve body shell.

[0006] A further configuration of the present invention is that the circumferential outer wall of the valve body shell is respectively fixed with lifting ears symmetrically distributed with respect to the center on both sides close to the protruding column, so as to facilitate the installation after lifting the device during installation or assembly, and avoid excessive residual stress when connecting the pipe mouth due to the excessive weight of the device.

[0007] A further configuration of the present invention is that two symmetrical L-shaped foot plates are fixed near the bottom end of the circumferential outer wall of the valve body shell, and the bottoms of the two foot plates are on the same plane, which not only makes it convenient to place the device horizontally at ordinary times, but also makes it convenient to fix the device on the anchor bolts to fix the whole device.

[0008] A further configuration of the present invention is that the driver fixing box is a box-shaped structure with an opening facing upward, and a sealing top cover is fixed to the top of the driver fixing box by bolts, and an observation window is provided in the middle of the sealing top cover, and a transparent plate is provided in the observation window; a marking groove is provided on the upper surface of the worm wheel near the circumferential edge to mark the direction of the water outlet of the valve ball so as to quickly and correctly adjust the water outlet angle.

[0009] A further configuration of the present invention is that a cylindrical groove 1 is formed at an equal distance from one end of the clamping ring close to the inner clamping ring 1, and one end of all the clamping springs is fixed at the bottom of the cylindrical groove 1; a cylindrical recessed groove 2 corresponding to the compression spring is formed on the side of the annular ridge close to the inner clamping ring 2, which can ensure that the inner clamping ring 1 and the inner clamping ring 2 are tightly pressed against the surface of the valve ball.

[0010] A further configuration of the present invention is that a rubber ring groove is opened on the circumferential outer wall of the inner snap ring 2, and a sealing ring is sleeved in the rubber ring groove, and an M-shaped gasket is fixed between the inner snap ring 2 and the side of the annular ridge, and the cross-section of the M-shaped gasket is an M-shaped structure, so that the inner snap ring 2 has a certain buffer space within a certain range, thereby ensuring that there is no leakage.

[0011] A further configuration of the present invention is that a plurality of equally spaced guide holes are provided on one side of the annular ridge close to the inner ring 2 and close to the edge of the inner hole, and a sliding rod adapted to the corresponding guide holes is reserved on the side of the inner ring 2 to avoid distortion of the inner ring 2.

[0012] A further configuration of the present invention is that an annular step is provided on the circumferential inner wall of the through-hole of the boss near the top edge, an annular retaining ring is reserved on the circumferential outer wall of the composite rotating shaft near the top of the annular step, an inner expansion sealing ring is fixed between the lower surface of the annular retaining ring and the upper surface of the annular step, and a bearing is fixed on the outer wall of the composite rotating shaft near the bottom of the annular retaining ring, and the outer ring of the bearing is clamped in the through-hole; a plurality of L-shaped anti-slip holes distributed symmetrically with the center are provided on the top of the boss, and a positioning clamping disk is fixed on the top of the boss to press the annular retaining ring on the annular step and prevent axial movement, and an L-shaped clamping block corresponding to the L-shaped anti-slip hole is fixed on the lower surface of the positioning clamping disk; a plurality of balls are embedded on the lower surface of the positioning clamping disk; when in use, it can be ensured that the composite rotating shaft can rotate normally without axial movement.

[0013] A further configuration of the present invention is that a spline is reserved at the bottom end of the composite rotating shaft, and an anti-twist slot engaged with the spline is reserved on the top outer wall of the valve ball; the installation is convenient and maintenance is easy.

[0014] The beneficial effects of the present invention are: 1. The large-port valve body shell is equipped with two inner snap rings 1 and 2 that can slide toward the middle and form full-time extrusion. The valve ball can be tightly squeezed from the opposite sides during operation, and the pressure difference can be compensated in time. It is not only convenient for disassembly and maintenance, but also prevents the valve ball from being biased to one side and causing a gap.

[0015] 2. The transparent plate in the observation window and the marking groove on the worm wheel disc corresponding to the water outlet position are used to mark the direction of the valve ball water outlet so as to quickly and correctly adjust the water outlet angle.

[0016] 3. By setting a positioning and clamping plate above the annular retaining ring, it can be ensured that the composite shaft can rotate normally without axial movement during use; with the setting of the inner expansion sealing ring, liquid leakage will not occur in the gap within a certain range, and the inner expansion sealing ring can fill the gap in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a high-pressure support plate fixed ball valve proposed by the present invention; Figure 2 This is a schematic diagram of the overall structure of the water outlet end of a high-pressure support plate fixed ball valve proposed by the present invention; Figure 3 A side view of a high-pressure support plate fixed ball valve proposed by the present invention; Figure 4 A high pressure support plate fixed ball valve proposed by the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA; Figure 5 A high pressure support plate fixed ball valve proposed by the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 6 This is an assembly diagram of a worm wheel disc and a clamping ring in a high-pressure support plate fixed ball valve proposed by the present invention; Figure 7 This is a bottom-up stereoscopic structural schematic diagram of a positioning clamping disc in a high-pressure support plate fixed ball valve proposed by the present invention; Figure 8 It is a partial cross-sectional view of a combination of a clamping ring and an inner clamping ring in a high-pressure support plate fixed ball valve proposed by the present invention; Fig. 9 This is an exploded view of an inner clamping ring 2 and an M-shaped gasket in a high-pressure support plate fixed ball valve proposed by the present invention.

[0018] In the figure: 1. valve body shell; 101. guide jack; 102. through hole; 103. cylindrical sink groove 2; 104. convex column; 105. L-shaped anti-drop hole; 106. annular convex ridge; 2. foot plate; 3. inner snap ring 1; 4. clamping ring; 401. cylindrical groove 1; 402. tightening spring; 5. driver fixing box; 6. sealing top cover; 7. worm; 8. observation window; 9. lifting ear; 10. Turntable; 11. Valve ball; 1101. Anti-twist slot; 12. Tension bolt; 13. M-shaped gasket; 14. Compression spring; 15. Sealing ring; 16. Second inner retaining ring; 17. Composite rotating shaft; 171. Annular retaining ring; 18. Positioning clamping plate; 1801. L-shaped clamping block; 1802. Ball; 19. Gasket with hole; 20. Worm wheel; 21. Bearing; 22. Inner expansion sealing ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the present invention, reference is made to Figure 1-Figure 9, a high-pressure support plate fixed ball valve, comprising a valve body shell 1 with an overall horizontal tubular structure, a circular convex ridge 106 is reserved on the inner wall of the valve body shell 1 near one end, the cross section of the circular convex ridge 106 is a right-angled trapezoid, and an inner snap ring 2 16 is slidably inserted on the side of the circular convex ridge 106 near the center of the valve body shell 1, an inner snap ring 1 3 is slidably connected to the inner wall of the circumference of the end of the valve body shell 1 away from the circular convex ridge 106, and the inner snap ring 1 3 and the inner snap ring 2 16 are opposite to each other on the side, and the same valve ball 11 is rotatably connected between the two spherical snap-fitting surfaces, and the side of the valve ball 11 is provided with a water-passing hole that penetrates the center of the ball and has a horizontal hole center line; a cylindrical convex column 104 is reserved on the outer wall of the valve body shell 1 near the top, and a vertical through hole 1 is opened on the top of the convex column 104 and communicates with the inside of the valve body shell 1, and a composite rotating shaft 1 fixedly connected to the valve ball 11 is rotatably connected in the through hole 1 7, a worm wheel 20 is fixed to the top of the composite rotating shaft 17; a driver fixing box 5 is sleeved and fixed to the top of the protruding column 104, and a worm 7 extending horizontally forward and backward is inserted inside the driver fixing box 5, the worm 7 is meshed with the worm wheel 20, and the other end of the worm 7 is fixed to the rotating disk 10; the inner snap ring 13 and the inner snap ring 216 are respectively fixed with a tightening spring 402 and a compression spring 14 distributed at equal distances on the opposite sides thereof; and a clamping ring 4 is sleeved and fixed at the end of the inner snap ring 13 away from the valve ball 11, and the clamping ring 4 is detachably fixed to the port of the valve body shell 1; by setting a large-port type valve body shell 1, in conjunction with the two inner snap rings 13 and the inner snap ring 216 inside thereof that can slide toward the middle and form full-time extrusion, the valve ball 11 can be tightly squeezed from the opposite sides during operation, and the pressure difference can be compensated in time, which is not only convenient for disassembly and maintenance but also prevents the valve ball 11 from biased to one side and causing a gap.

[0021] In the present invention, a plurality of through holes 102 are formed at one end of the valve body shell 1 away from the annular ridge 106, and a flange hole corresponding to the through hole 102 is reserved near the through hole 102 of the clamping ring 4, and a same perforated gasket 19 is fixed between the side of the clamping ring 4 and the end of the valve body shell 1; a tensioning bolt 12 is inserted through the through hole 102, and the tensioning bolt 12 passes through the through hole 102, the perforated gasket 19 and the flange hole in turn and is screwed with a top nut to tightly fix the clamping ring 4 to the end of the valve body shell 1.

[0022] Please refer to Figure 2 The outer wall of the valve body shell 1 is close to the protruding column 104 on both sides thereof and fixed with lifting ears 9 which are symmetrically distributed with respect to the center, so as to facilitate the installation after the device is lifted during installation or assembly, and avoid excessive residual stress when the pipe mouth is connected due to the excessive weight of the device.

[0023] Please refer to Figure 2Two symmetrical L-shaped foot plates 2 are fixed near the bottom of the circumferential outer wall of the valve body shell 1, and the bottoms of the two foot plates 2 are on the same plane, which not only makes it convenient to place the device horizontally at ordinary times, but also makes it convenient to fix the device on the anchor bolts to fix the whole device.

[0024] Please refer to Figure 2 and Figure 6 The driver fixing box 5 is a box-shaped structure with an opening facing upward, and a sealing top cover 6 is fixed to the top of the driver fixing box 5 by bolts, and an observation window 8 is provided in the middle of the sealing top cover 6, and a transparent plate is provided in the observation window 8; a marking groove is provided on the upper surface of the worm wheel disk 20 near the circumferential edge to mark the direction of the water outlet of the valve ball 11, so as to quickly and correctly adjust the water outlet cutting angle.

[0025] Please refer to Figure 4 The end of the clamping ring 4 close to the inner retaining ring 3 is provided with cylindrical grooves 401 distributed at equal distances, and one end of all the clamping springs 402 is fixed at the bottom of the cylindrical groove 401; the side of the annular ridge 106 close to the inner retaining ring 16 is provided with a cylindrical recessed groove 103 corresponding to the compression spring 14, which can ensure that the inner retaining ring 3 and the inner retaining ring 16 are tightly pressed against the surface of the valve ball 11.

[0026] Please refer to Figure 4 A rubber ring groove is formed on the circumferential outer wall of the inner snap ring 16, and a sealing ring 15 is sleeved in the rubber ring groove. An M-shaped gasket 13 is fixed between the inner snap ring 16 and the side of the annular ridge 106, and the cross-section of the M-shaped gasket 13 is an M-shaped structure, so that the inner snap ring 16 has a certain buffer space within a certain range, thereby ensuring that there is no leakage.

[0027] Please refer to Figure 2 , Figure 4 and Fig. 9 A plurality of equally spaced guide holes 101 are provided on one side of the annular ridge 106 close to the inner ring 16 and close to the edge of the inner hole, and a sliding rod matching the corresponding guide holes 101 is reserved on the side of the inner ring 16 to prevent the inner ring 16 from twisting.

[0028] Please refer to Figure 4 , Figure 6 , Figure 7 and Fig. 9The inner wall of the through hole of the boss 104 is provided with an annular step near the top edge, and the outer wall of the circumference of the composite shaft 17 is provided with an annular retaining ring 171 near the top of the annular step. An inner expansion sealing ring 22 is fixed between the lower surface of the annular retaining ring 171 and the upper surface of the annular step, and a bearing 21 is sleeved and fixed on the outer wall of the composite shaft 17 near the bottom of the annular retaining ring 171, and the outer ring of the bearing 21 is clamped in the through hole; the top of the boss 104 is provided with a plurality of L-shaped anti-drop holes 105 distributed symmetrically with the center, and the top of the boss 104 A positioning clamping disk 18 is fixed to press the annular retaining ring 171 onto the annular step to prevent axial movement, and an L-shaped clamping block 1801 corresponding to the L-shaped anti-drop hole 105 is fixed to the lower surface of the positioning clamping disk 18; a plurality of balls 1802 are embedded on the lower surface of the positioning clamping disk 18; when in use, it can ensure that the composite shaft 17 can rotate normally without axial movement; with the setting of the inner expansion sealing ring 22, liquid leakage will not occur in the gap within a certain range, and the inner expansion sealing ring 22 can fill the gap in time.

[0029] Please refer to Fig. 9 A spline is reserved at the bottom end of the composite shaft 17, and an anti-twist slot 1101 engaged with the spline is reserved on the top outer wall of the valve ball 11; the installation is convenient and the maintenance is easy.

[0030] Working principle: When installing the device, first fix the inner retaining ring 16 fixed with the M-shaped gasket 13 and the compression spring 14 on the surface of the annular ridge 106, and ensure that all the sliding rods are inserted into the corresponding guide sockets 101; then insert the valve ball 11 from the end of the valve body shell 1 away from the annular ridge 106, that is, the end with a large diameter, and adjust the posture so that the anti-twist slot 1101 is vertically upward and coaxial with the socket in the middle of the boss 104; then, pass the supporting shaft 17 through the socket one from the top and fix it in the anti-twist slot 1101; finally, install the composite shaft 17 and the components on the inner retaining ring 3 in the corresponding positions in turn; when the device needs to be opened, turn the turntable 10, and the turntable 10 drives the worm 7 to rotate, and then drives the composite shaft 17 and the valve ball 11 at its bottom to rotate.

[0031] 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 high-pressure support plate fixed ball valve, comprising a valve body shell of an overall horizontal tubular structure, wherein an annular ridge is reserved on the inner wall of the circumference near one end of the valve body shell, and an inner snap ring 2 is slidably inserted on the side of the annular ridge near the center of the valve body shell, and an inner snap ring 1 is slidably connected to the inner wall of the circumference of one end of the valve body shell away from the annular ridge, characterized in that: The inner snap ring 1 and the inner snap ring 2 are respectively provided with spherical snap-fit ​​surfaces with equal radius on opposite sides, and a valve ball is rotatably connected between the two spherical snap-fit ​​surfaces, and a water hole penetrating through the center of the ball is provided on the side of the valve ball; A convex column is reserved near the top of the circumferential outer wall of the valve body shell, and a vertical through hole one is opened at the top of the convex column and communicates with the inside of the valve body shell. A composite rotating shaft fixedly connected to the valve ball is rotatably connected in the through hole one, and a worm wheel is fixed at the top of the composite rotating shaft; A driver fixing box is sleeved and fixed on the top end of the protruding column, and a worm extending horizontally forward and backward is inserted into the interior of the driver fixing box, the worm is meshed with the worm wheel, and a turntable is fixed to the other end of the worm; a clamping spring and a compression spring distributed equidistantly are fixed on the opposite sides of the inner snap ring 1 and the inner snap ring 2 respectively; and a clamping ring is sleeved and fixed on the end of the inner snap ring 1 away from the valve ball, and the clamping ring is detachably fixed to the port of the valve body shell.

2. A high pressure support plate fixed ball valve according to claim 1, characterized in that: The valve body shell has a plurality of through holes at one end away from the annular ridge, and the clamping ring has flange holes corresponding to the through holes reserved near the through holes, and a same perforated gasket is fixed between the side of the clamping ring and the end of the valve body shell; and tensioning bolts are inserted in the through holes.

3. A high pressure support plate fixed ball valve according to claim 1, characterized in that: The circumferential outer wall of the valve body shell is respectively fixed with lifting ears on both sides close to the convex column and are distributed symmetrically with each other.

4. A high pressure support plate fixed ball valve according to claim 3, characterized in that: Two foot plates that are symmetrical to each other and have an L-shaped structure are fixed near the bottom end of the circumferential outer wall of the valve body shell, and the bottoms of the two foot plates are on the same plane.

5. The high pressure support plate fixed ball valve according to claim 1, characterized in that: The driver fixing box is a box-shaped structure with an opening facing upward, and a sealing top cover is fixed to the top of the driver fixing box by bolts, and an observation window is provided in the middle of the sealing top cover, and a transparent plate is provided in the observation window; a marking groove is provided on the upper surface of the worm wheel near the circumferential edge to mark the direction of the water outlet of the valve ball so as to quickly and correctly adjust the water outlet cutting angle.

6. A high pressure support plate fixed ball valve according to claim 1, characterized in that: The end of the clamping ring close to the inner retaining ring is provided with a cylindrical groove 1 distributed at equal distances, and one end of all the clamping springs is fixed to the bottom of the cylindrical groove 1; the side of the annular convex ridge close to the inner retaining ring 2 is provided with a cylindrical recessed groove 2 corresponding to the compression spring.

7. A high pressure support plate fixed ball valve according to claim 1, characterized in that: The circumferential outer wall of the inner snap ring 2 is provided with a rubber ring groove, and a sealing ring is sleeved in the rubber ring groove. An M-shaped gasket is also fixed between the inner snap ring 2 and the side surface of the annular convex ridge, and the cross section of the M-shaped gasket is an M-shaped structure.

8. A high pressure support plate fixed ball valve according to claim 7, characterized in that: A plurality of equally spaced guide holes are formed on one side of the annular ridge close to the inner ring 2 and close to the edge of the inner hole, and a sliding rod matched with the corresponding guide holes is reserved on the side of the inner ring 2.

9. The high pressure support plate fixed ball valve according to claim 1, characterized in that: An annular step is provided on the inner wall of the circumferential wall of the through hole of the boss near the top edge, an annular retaining ring is reserved on the circumferential outer wall of the composite shaft near the top of the annular step, an inner expansion sealing ring is fixed between the lower surface of the annular retaining ring and the upper surface of the annular step, and a bearing is fixed on the outer wall of the composite shaft near the bottom of the annular retaining ring, and the outer ring of the bearing is clamped in the through hole; a plurality of L-shaped anti-drop holes distributed symmetrically with the center are provided on the top of the boss, and a positioning clamping disk is fixed on the top of the boss to press the annular retaining ring on the annular step and prevent it from moving axially, and an L-shaped clamping block corresponding to the L-shaped anti-dropping hole is fixed on the lower surface of the positioning clamping disk; a plurality of balls are embedded on the lower surface of the positioning clamping disk.

10. A high pressure support plate fixed ball valve according to claim 9, characterized in that: A spline is reserved at the bottom end of the composite rotating shaft, and an anti-twist slot engaged with the spline is reserved on the top outer wall of the valve ball.

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