Bidirectional sealing rotary ball valve

Abstract

The utility model discloses a bidirectional sealing rotary ball valve which comprises a ball valve body with an opening in the top, the left side of the ball valve body is communicated and fixed with a first through-flow connecting pipe, the right side of the ball valve body is communicated and fixed with a second through-flow connecting pipe, the top of the ball valve body is fixedly connected with a sealing cover, and a rotating pipe is embedded in the top of the sealing cover in a sealing and rotating mode. A series of structures are arranged, the plugging direction can be flexibly rotated according to the water inlet direction, the bidirectional sealing adjustable effect is achieved, the mode that the sealing direction is adjustable is utilized, limitation of the water inlet direction is avoided, locking and mistaken touch prevention autorotation are facilitated after adjustment, the use stability is improved, unnecessary troubles caused under the condition that people do not know the situation are avoided, and the sealing effect is good. And when the anti-abrasion sealing rubber sheet is abraded and thinned and cannot be effectively sealed, a worker can directly and conveniently adjust the sealing performance in a simple rotating mode, the frequency of complex disassembly, assembly and replacement is reduced, and the stability and convenience of long-term use are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary ball valves, in particular to a bidirectional sealed rotary ball valve. Background Art

[0002] The rotary ball valve combines the functions and advantages of butterfly valve, half ball valve, gate valve and stop valve, and has its own unique powerful functions and advantages. It is small in size, light in weight, easy to transport, install, maintain and overhaul, and reliable in operation. The two-way sealing means that the valve body can be sealed in both directions, that is, the sealing valve core can be rotated to any direction for sealing. Compared with the traditional valve that can only be fixed in one direction, it is not restricted by the water inlet direction.

[0003] The existing two-way sealed rotary ball valve will inevitably wear out the outer side of the valve core as it is opened and closed many times, resulting in reduced or failed sealing performance. The valve core needs to be disassembled and replaced, which is cumbersome and cannot be adjusted directly and conveniently by personnel when it is worn. The convenience and sealing stability of long-term use are not ideal. In addition, the ball valve itself does not have a locking function, and it is easy to cause the valve core to rotate due to accidental touching of the handle, which will cause unnecessary trouble without knowing the situation. There is room for improvement. In view of this, the present application proposes a two-way sealed rotary ball valve to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a two-way sealed rotary ball valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a two-way sealed rotary ball valve, comprising a ball valve body with an opening at the top, a first flow pipe being fixedly connected to the left side of the ball valve body, a second flow pipe being fixedly connected to the right side of the ball valve body, a sealing cover being fixedly connected to the top of the sealing cover, a rotating tube being embedded in the top of the sealing cover for sealing rotation, a rectangular tube with a blocking structure at the left end being fixedly connected to the bottom end of the rotating tube, a rotating drive locking assembly being fixedly sleeved on the outer top of the rotating tube, the rotating drive locking assembly being used to drive the rotating tube to rotate and to perform locking work after rotation, and the rectangular tube being driven to rotate by the rotation of the rotating tube;

[0006] A threaded drive assembly is installed in the rectangular tube, and the right end of the threaded drive assembly extends to the outside of the rectangular tube and is fixedly connected to a hemispherical valve core. The outside of the hemispherical valve core is bonded and fixed with an anti-wear sealing rubber, and the right side of the anti-wear sealing rubber is in movably contact with the right inner wall of the ball valve body and the left end of the second flow pipe, and the anti-wear sealing rubber is adapted to the first flow pipe. A rotary drive assembly fixedly sleeved on the threaded drive assembly is rotatably installed in the rotating tube, and the top of the rotary drive assembly extends to the top of the rotating tube. The threaded drive assembly is used to drive the hemispherical valve core and the anti-wear sealing rubber to rotate to the left or right when the rectangular tube rotates, so as to perform end sealing work of the first flow pipe or the second flow pipe. The left and right sealing directions are adjustable, so that the sealing direction can be flexibly rotated according to the water inlet direction, and the effect of two-way adjustable sealing is achieved. The rotary drive assembly is used to drive the threaded drive assembly to rotate, and the threaded drive assembly is used to laterally adjust the position of the hemispherical valve core when it is driven to rotate, so as to achieve the effect of directly adjusting the sealing performance after wear and leakage occurs.

[0007] Preferably, the rotary drive locking assembly includes a turntable fixedly sleeved on the top of the outer side of the rotating tube, and the top right side of the cover is movably contacted with a knob-type bolt, and the turntable is threadedly sleeved on the knob-type bolt.

[0008] Preferably, the threaded drive assembly includes a screw rotatably mounted on the inner wall of the left end of the rectangular tube, a sealing sliding sleeve in the rectangular tube is provided with a rectangular rod, the rectangular rod is threadedly sleeved on the screw, and the right end of the rectangular rod is fixedly connected to the left side of the hemispherical valve core.

[0009] Preferably, the rotary drive assembly includes a T-shaped rotating rod rotatably installed in the rotating tube, the top end of the T-shaped rotating rod extends to the top of the rotating tube, the bottom end of the T-shaped rotating rod extends into the rectangular tube and is fixedly connected to a first bevel gear, and the bottom of the first bevel gear is engaged with a second bevel gear fixedly mounted on the screw.

[0010] Preferably, a rotating groove is provided at the top and bottom of the cover, a sealing bearing is fixedly sleeved in the rotating groove, the inner ring of the sealing bearing is fixedly sleeved on the outer side of the rotating tube, a circular through-hole is provided between the two rotating grooves, a sealing ring is adhesively sleeved in the circular through-hole, and the sealing ring is movably sleeved on the rotating tube.

[0011] Preferably, a threaded hole threadedly connected to a knob-type bolt is provided on the right side of the top of the turntable.

[0012] Preferably, a thread groove is formed at the left end of the rectangular rod and is threadably connected to the screw rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The ball valve body, first flow pipe, second flow pipe, rotary drive locking assembly, rotating pipe, rectangular pipe, rectangular rod, hemispherical valve core and anti-wear sealing rubber are arranged in coordination, and the sealing direction can be flexibly rotated according to the water inlet direction, with a two-way adjustable sealing effect. The adjustable sealing direction is not restricted by the water inlet direction, and can be locked to prevent accidental collision and self-rotation after adjustment, thereby improving the stability of use and avoiding unnecessary troubles caused by unknown conditions.

[0015] 2. By cooperating with the hemispherical valve core, anti-wear sealing rubber, rotating tube, rectangular tube, threaded drive assembly and rotary drive assembly, the lateral position of the hemispherical valve core can be directly adjusted by simple rotation. By utilizing its adjustable lateral position, when the anti-wear sealing rubber is worn and thin and cannot effectively seal, personnel can directly and conveniently adjust the sealing by simple rotation, thereby reducing the frequency of complex disassembly and replacement and improving long-term stability and convenience.

[0016] The utility model is provided with a series of structures, which can flexibly rotate the sealing direction according to the water inlet direction, and has the effect of two-way adjustable sealing. The adjustable sealing direction is not restricted by the water inlet direction, and is convenient for locking the anti-accidental collision rotation after adjustment, thereby improving the stability of use and avoiding unnecessary trouble in the absence of known circumstances. In addition, when the anti-wear sealing rubber is worn and thin and cannot effectively seal, personnel can directly and conveniently adjust the sealing by a simple rotation, thereby reducing the frequency of complex disassembly and replacement, and improving the stability and convenience of long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a two-way sealed rotary ball valve proposed by the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure;

[0019] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A in FIG.

[0020] In the figure: 1. Ball valve body; 2. First flow pipe; 3. Second flow pipe; 4. Closing cover; 5. Rotating pipe; 6. Turntable; 7. Knob-type bolt; 8. Rectangular tube; 9. Hemispherical valve core; 10. Anti-wear sealing rubber; 11. Rectangular rod; 12. Screw; 13. Second bevel gear; 14. First bevel gear; 15. T-shaped rotating rod; 16. Sealing ring. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 3 As shown, a two-way sealed rotary ball valve proposed in this embodiment includes a ball valve body 1 with an opening at the top, a first flow pipe 2 is connected and fixed to the left side of the ball valve body 1, and a second flow pipe 3 is connected and fixed to the right side of the ball valve body 1, a cover 4 is fixedly connected to the top of the ball valve body 1, and a rotating tube 5 is embedded in the top of the cover 4 for sealing rotation, wherein the top and bottom of the cover 4 are provided with a rotating groove, a sealing bearing is fixedly sleeved in the rotating groove, the inner ring of the sealing bearing is fixedly sleeved to the outer side of the rotating tube 5, and a sealing ring is provided between the two rotating grooves. A circular perforation is provided, and a sealing ring 16 is provided in the adhesive sleeve inside the circular perforation. The sealing ring 16 is movably sleeved on the rotating tube 5. The two sealing bearings provided have the effect of sealing and rotating the rotating tube 5. The provided sealing ring 16 has the effect of further sealing the outer side of the rotating tube 5. The bottom end of the rotating tube 5 is fixedly connected to a rectangular tube 8 with a blocking structure at the left end. The outer top of the rotating tube 5 is fixedly sleeved with a rotary drive locking assembly. The rotary drive locking assembly is used to drive the rotating tube 5 to rotate and perform locking work after rotation. The rotation of the rotating tube 5 is used to drive the rectangular tube 8 to rotate;

[0023] A threaded drive assembly is installed in the rectangular tube 8, and the right end of the threaded drive assembly extends to the outside of the rectangular tube 8 and is fixedly connected to a hemispherical valve core 9. The outer side of the hemispherical valve core 9 is bonded and fixed with an anti-wear sealing rubber 10. The right side of the anti-wear sealing rubber 10 is in active contact with the right inner wall of the ball valve body 1 and the left end of the second flow pipe 3. The anti-wear sealing rubber 10 is adapted to the first flow pipe 2. A rotary drive assembly fixedly sleeved on the threaded drive assembly is rotatably installed in the rotating tube 5. The top of the rotary drive assembly extends to the top of the rotating tube 5. The threaded drive The component is used to drive the hemispherical valve core 9 and the anti-wear sealing rubber 10 to rotate to the left or right when the rectangular tube 8 rotates, so as to perform end sealing work of the first flow pipe 2 or the second flow pipe 3. The left and right sealing directions are adjustable, so that the sealing direction can be flexibly rotated according to the water inlet direction, and the sealing can be adjusted in both directions. The rotary drive component is used to drive the threaded drive component to rotate, and the threaded drive component is used to adjust the position of the hemispherical valve core 9 laterally when it is driven to rotate, so as to achieve the effect of directly adjusting the sealing performance after wear and leakage.

[0024] Specifically, the rotary drive locking assembly includes a turntable 6 fixedly mounted on the top outer side of the rotating tube 5, and a knob-type bolt 7 is movably contacted on the right top side of the cover 4. The turntable 6 is threadedly mounted on the knob-type bolt 7, wherein a threaded hole threadedly connected to the knob-type bolt 7 is provided on the right top side of the turntable 6; the set turntable 6 and the knob bolt 7 cooperate, and the knob bolt 7 is rotated in the reverse direction to separate it from the cover 4, thereby releasing the lock of the turntable 6, and the personnel pulls the knob bolt 7 to drive the turntable 6 to rotate, and the rotation of the turntable 6 is used to drive the rotating tube 5 to rotate, and the knob bolt 7 is rotated forward to squeeze it with the cover 4, thereby realizing the locking of the turntable 6 after adjustment, thereby realizing the locking of the rotating tube 5 to prevent accidental collision and self-rotation after rotation.

[0025] Furthermore, the threaded drive assembly includes a screw 12 rotatably mounted on the inner wall of the left end of the rectangular tube 8, wherein a first bearing is fixedly connected to the inner wall of the left end of the rectangular tube 8, and the inner side of the inner ring of the first bearing is fixedly connected to the outer side of the screw 12, which plays the effect of rotatably mounting the screw 12, and a rectangular rod 11 is provided in the sealing sliding sleeve of the rectangular tube 8, wherein the outer adhesive sleeve of the rectangular rod 11 is provided with a sealing rubber sleeve, and the outer side of the sealing rubber sleeve is in sliding contact with the inner wall of the rectangular tube 8, which plays the effect of sliding sealing between the outer side of the rectangular rod 11 and the inner side of the rectangular tube 8, and the rectangular rod 11 is threadedly sleeved on the screw 12, wherein the left end of the rectangular rod 11 is provided with a threaded connection with the screw 12 The threaded groove utilizes the threaded connection relationship between the screw 12 and the threaded groove to facilitate the effect of driving the rectangular rod 11 to move horizontally left and right when the screw 12 rotates. The right end of the rectangular rod 11 is fixedly connected to the left side of the hemispherical valve core 9; the provided screw 12 and the rectangular rod 11 cooperate to drive the rectangular rod 11 to slide horizontally outward in the rectangular tube 8 when the screw 12 rotates. The rectangular rod 11 drives the hemispherical valve core 9 and the anti-wear sealing rubber 10 to move horizontally, so as to adjust the lateral position of the hemispherical valve core 9. By utilizing the adjustable lateral position, the sealing performance can be directly adjusted when the anti-wear sealing rubber 10 wears and becomes thinner and cannot effectively seal, thereby improving the long-term use stability.

[0026] Furthermore, the rotary drive assembly includes a T-shaped rotating rod 15 rotatably installed in the rotating tube 5, wherein two second bearings are fixedly sleeved in the rotating tube 5, and the inner ring of the second bearing is fixedly sleeved on the outer side of the T-shaped rotating rod 15, which has the effect of rotatably installing the T-shaped rotating rod 15. The top end of the T-shaped rotating rod 15 extends to the top of the rotating tube 5, and the bottom end of the T-shaped rotating rod 15 extends into the rectangular tube 8 and is fixedly connected to the first bevel gear 14. The bottom of the first bevel gear 14 is engaged with a second bevel gear 13 fixedly sleeved on the screw 12; the T-shaped rotating rod 15, the first bevel gear 14 and the second bevel gear 13 are arranged to cooperate, and the T-shaped rotating rod 15 is rotated to drive the first bevel gear 14 to rotate, and the first bevel gear 14 is used to drive the screw 12 to rotate through the second bevel gear 13 meshed with it.

[0027] The method of using this embodiment is as follows: when opening, first reversely rotate the knob bolt 7 to separate it from the sealing cover 4, release the lock of the turntable 6, and the person pulls the knob bolt 7 to drive the turntable 6 to rotate, the turntable 6 drives the rotating tube 5 to rotate, the rotating tube 5 drives the rectangular tube 8 to rotate, and the rectangular tube 8 drives the hemispherical valve core 9 and the anti-wear sealing rubber 10 to rotate toward the front or rear side through the rectangular rod 11, thereby releasing the blockage of the second flow pipe 3 and realizing water circulation. When blocking is required, or when the first flow pipe 2 or the second flow pipe 3 needs to be selectively blocked according to the water inlet direction, the person rotates the turntable 6 again to drive the rotating tube 5 to rotate, thereby driving the hemispherical valve core 9 and the anti-wear sealing rubber 1 0 rotation, when it is necessary to block the first flow pipe 2, the hemispherical valve core 9 is controlled to rotate to the left to block it, and when it is necessary to block the second flow pipe 3, the hemispherical valve core 9 is controlled to rotate to the right to block it. The left and right blocking directions are adjustable, which is convenient for flexibly rotating the blocking direction according to the water inlet direction, and has a two-way sealing adjustable effect. The sealing direction is adjustable and is not restricted by the water inlet direction. After adjustment, the knob-type bolt 7 is rotated forward to squeeze it with the sealing cover 4 to achieve the locking work of the turntable 6 after adjustment, and the locking after adjustment is achieved to prevent accidental collision and self-rotation, thereby improving the stability of use and avoiding unnecessary trouble in the absence of an unknown situation.

[0028] With long-term use of switches, when the anti-wear sealing rubber 10 on the outside of the hemispherical valve core 9 wears and becomes thinner and cannot seal effectively, personnel can directly rotate the T-shaped rotating rod 15 in the forward direction to drive the first bevel gear 14 to rotate. The first bevel gear 14 drives the screw 12 to rotate through the second bevel gear 13 meshing with it. The rotation of the screw 12 drives the rectangular rod 11 to slide rightward in the rectangular tube 8. The rectangular rod 11 drives the hemispherical valve core 9 and the anti-wear sealing rubber 10 to move right, and tightly contact with the inner wall of the ball valve body 1, so as to adjust the lateral position of the hemispherical valve core 9. By utilizing its adjustable lateral position, personnel can directly and conveniently adjust the sealing when the anti-wear sealing rubber 10 wears and becomes thinner and cannot seal effectively, thereby reducing the frequency of complex disassembly and replacement and improving long-term stability and convenience.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A two-way sealed rotary ball valve, comprising a ball valve body (1) with an opening at the top, characterized in that: The left side of the ball valve body (1) is connected and fixed with a first flow pipe (2), the right side of the ball valve body (1) is connected and fixed with a second flow pipe (3), the top of the ball valve body (1) is fixedly connected with a cover (4), the top of the cover (4) is sealed and rotatably embedded with a rotating tube (5), the bottom end of the rotating tube (5) is fixedly connected with a rectangular tube (8) with a blocking structure at the left end, and the outer top of the rotating tube (5) is fixedly sleeved with a rotary drive locking component; A threaded drive assembly is installed in the rectangular tube (8), the right end of the threaded drive assembly extends to the outside of the rectangular tube (8) and is fixedly connected to a hemispherical valve core (9), an anti-wear sealing rubber (10) is bonded and fixed to the outer side of the hemispherical valve core (9), the right side of the anti-wear sealing rubber (10) is in active contact with the right inner wall of the ball valve body (1) and the left end of the second flow pipe (3), the anti-wear sealing rubber (10) is adapted to the first flow pipe (2), a rotary drive assembly fixedly sleeved on the threaded drive assembly is rotatably installed in the rotating tube (5), and the top of the rotary drive assembly extends to the top of the rotating tube (5).

2. A two-way sealed rotary ball valve according to claim 1, characterized in that: The rotary drive locking assembly comprises a rotary disk (6) fixedly sleeved on the outer top of the rotary tube (5); a knob-type bolt (7) is movably contacted on the right side of the top of the cover (4); and the rotary disk (6) is threadedly sleeved on the knob-type bolt (7).

3. A two-way sealed rotary ball valve according to claim 1, characterized in that: The thread drive assembly comprises a screw (12) rotatably mounted on the inner wall of the left end of a rectangular tube (8); a rectangular rod (11) is provided in a sealing sliding sleeve in the rectangular tube (8); the rectangular rod (11) is threadably sleeved on the screw (12); and the right end of the rectangular rod (11) is fixedly connected to the left side of a hemispherical valve core (9).

4. A two-way sealed rotary ball valve according to claim 3, characterized in that: The rotary drive assembly comprises a T-shaped rotating rod (15) rotatably mounted in a rotating tube (5), the top end of the T-shaped rotating rod (15) extending above the rotating tube (5), the bottom end of the T-shaped rotating rod (15) extending into the rectangular tube (8) and fixedly connected to a first bevel gear (14), and the bottom of the first bevel gear (14) meshing with a second bevel gear (13) fixedly sleeved on a screw rod (12).

5. The two-way sealed rotary ball valve according to claim 1, characterized in that: The top and bottom of the cover (4) are both provided with a rotation groove, a sealing bearing is fixedly sleeved in the rotation groove, the inner ring of the sealing bearing is fixedly sleeved with the outer side of the rotation tube (5), a circular through hole is provided between the two rotation grooves, a sealing ring (16) is adhesively sleeved in the circular through hole, and the sealing ring (16) is movably sleeved on the rotation tube (5).

6. A two-way sealed rotary ball valve according to claim 2, characterized in that: A threaded hole threadedly connected to a knob-type bolt (7) is provided on the right side of the top of the turntable (6).

7. A two-way sealed rotary ball valve according to claim 3, characterized in that: The left end of the rectangular rod (11) is provided with a thread groove which is threadably connected to the screw rod (12).

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