Self-locking semi-ball valve

Abstract

The utility model discloses a self-locking type semi-ball valve which comprises a lower semi-ball-shaped valve shell and a machine shell, an upper valve shell is installed on the top of the lower semi-ball-shaped valve shell, a valve element matched with the lower semi-ball-shaped valve shell is movably connected in the upper valve shell, and the machine shell is welded to one side of the top of the upper valve shell. A worm wheel welded to the valve element is movably connected into the machine shell, and a worm is movably connected into the portion, at one end of the worm wheel, of the machine shell. By installing the upper valve shell and the like, the performance of the device is optimized, when the valve element rotates in the upper valve shell and the lower hemispherical valve shell to achieve opening and closing control, the ball on the upper surface of the valve element can roll along with the valve element, and therefore oil in the oil discharging hole communicated with the lubricating oil storage box is brought out; lubricating protection of moving surfaces among the valve core, the upper valve shell and the lower hemispherical valve shell is realized, so that the valve core is protected, the abrasion influence is reduced, and the service life of the valve core is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-spherical valves, and specifically relates to a self-locking semi-spherical valve. Background Technique

[0002] The semi-spherical valve is a common type of valve, which is widely used in the fields of chemical industry, petroleum, gas and metallurgy. The semi-spherical valve has a beautiful appearance and is easy to operate. However, there are still some defects in the actual use of the semi-spherical valve.

[0003] The valve core structure inside the semi-spherical valve is prone to looseness under the scouring action of the medium introduced into the valve shell, which results in poor plugging and protection effects of the device. Moreover, it does not have a self-lubricating structure, and the valve core is prone to large wear during repeated movements. Based on this, we propose a new type of self-locking semi-spherical valve, which has a double self-locking protection structure and a lubrication protection structure, improving the use effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide a self-locking semi-spherical valve to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A self-locking semi-spherical valve, including a lower semi-spherical valve shell and a machine shell. The top of the lower semi-spherical valve shell is provided with an upper valve shell. The inside of the upper valve shell is movably connected with a valve core matching the lower semi-spherical valve shell. The machine shell is welded to one side of the top of the upper valve shell. The inside of the machine shell is movably connected with a worm gear welded to the valve core. One end of the worm gear inside the machine shell is movably connected with a worm. One side of the worm is provided with an operating handle. A composite rubber spring is fixed inside the machine shell. One side of the composite rubber spring is connected with a self-locking plug matching the operating handle. A pressing piece is welded to the side of the self-locking plug close to the composite rubber spring. Flange plates are welded to both ends of the lower semi-spherical valve shell. A lubricating oil storage box communicated with the valve core is fixed to the top of the machine shell. Oil discharge holes are evenly arranged on the outer side wall of the valve core. A ball is movably connected inside the oil discharge hole.

[0006] Preferably, assembly plates are welded to the bottom of the upper valve shell and the top of the lower semi-spherical valve shell. Screws are evenly screwed on the assembly plates, making it convenient to disassemble, assemble and maintain between the upper valve shell and the lower semi-spherical valve shell by using the assembly plates.

[0007] Preferably, a rubber sealing layer is vulcanized and connected to the assembly plate, improving the sealing effect when the upper valve shell and the lower semi-spherical valve shell are assembled.

[0008] Preferably, a silicone rubber sealing ring is inlaid on the side of the flange plate away from the lower semi-spherical valve shell, improving the sealing performance when the flange plate is installed.

[0009] Preferably, a threaded mounting groove is provided inside the flange, and a stainless steel filter screen is threadedly connected to the threaded mounting groove, so that the flange can provide filtering and anti-blocking protection for the inside of the lower hemispherical valve housing.

[0010] Preferably, nano-ceramic anti-adhesion layers are provided on the outer side wall of the stainless steel filter screen and the inner side walls of the upper valve housing and the lower hemispherical valve housing, which improves the wear-resistant and anti-adhesion properties of the stainless steel filter screen, the upper valve housing and the lower hemispherical valve housing.

[0011] Preferably, the valve core has a hollow structure, and the bottom of the lubricating oil storage box is communicated with the inside of the valve core.

[0012] Preferably, the worm longitudinally penetrates through one side of the machine housing, and a dismountable installation structure is formed between the operating handle and the worm through screws.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) By installing a self-locking insert block and the like, the self-locking semi-spherical valve optimizes its own structure. On the one hand, the user can rotate the operating handle, drive the worm to move, and then drive the valve core to move to realize the opening and closing operation based on the transmission action formed by the worm and the worm gear. Moreover, by using the self-locking function of the worm gear and the worm, it is ensured that the valve core will not drive the worm to move in the direction of the worm gear due to the action of medium scouring, which enables the device to achieve good self-locking and anti-loosening protection. On the other hand, the user can press the pressing piece, so that the self-locking insert block compresses the composite rubber spring. At this time, the self-locking insert block will disengage from the inner groove of the operating handle. Then, the user can rotate the operating handle to control the opening and closing of the device. Subsequently, when the pressing piece is released, the self-locking insert block can be embedded in the rotating operating handle and pressed tightly under the elastic action of the composite rubber spring for self-locking limit protection, which enables the device to achieve two-stage self-locking protection and effectively avoids the loosening problem caused by the valve core being scoured by the medium.

[0015] (2) By installing an upper valve housing and the like, the self-locking semi-spherical valve optimizes its own performance. When the valve core rotates inside the upper valve housing and the lower hemispherical valve housing to realize opening and closing control, the balls on the upper surface of the valve core will roll accordingly, thereby bringing out the oil liquid in the oil discharge hole communicated with the lubricating oil storage box, realizing the lubrication protection for the moving surfaces between the valve core and the upper valve housing and the lower hemispherical valve housing. This is beneficial to protecting the valve core, reducing the wear influence, and extending the service life of the valve core.

[0016] (3) The self-locking hemispherical valve is equipped with a flange plate, etc. When the device is actually used, on the one hand, a silicone rubber sealing ring is inlaid on the side of the flange plate away from the lower hemispherical valve housing, which improves the sealing performance during the installation of the flange plate. On the other hand, a threaded installation groove is provided inside the flange plate, and a stainless steel filter screen is threadedly connected to the threaded installation groove, so that the flange plate can provide filtering and anti-blocking protection for the inside of the lower hemispherical valve housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the present invention;

[0018] Figure 2 is a front view structural schematic diagram of the upper valve housing of the present invention;

[0019] Figure 3 is a partial cross-sectional view of the top view of the housing of the present invention;

[0020] Figure 4 is a side view structural schematic diagram of the flange plate of the present invention;

[0021] Figure 5 is a partial cross-sectional view of the top view of the self-locking insert block of the present invention.

[0022] In the figure: 1, lubricating oil storage box; 2, upper valve housing; 3, assembly plate; 4, lower hemispherical valve housing; 5, flange plate; 6, operating handle; 7, ball; 8, oil drain hole; 9, valve core; 10, pressing piece; 11, worm; 12, worm gear; 13, housing; 14, self-locking insert block; 15, stainless steel filter screen; 16, silicone rubber sealing ring; 17, threaded installation groove; 18, composite rubber spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , an embodiment provided by the present invention: a self-locking hemispherical valve, including a lower hemispherical valve housing 4 and a housing 13. The top of the lower hemispherical valve housing 4 is provided with an upper valve housing 2, and a valve core 9 matching the lower hemispherical valve housing 4 is movably connected inside the upper valve housing 2;

[0025] The housing 13 is welded to one side of the top of the upper valve housing 2. A worm gear 12 welded to the valve core 9 is movably connected inside the housing 13. A worm 11 is movably connected inside the housing 13 at one end of the worm gear 12, and an operating handle 6 is installed on one side of the worm 11;

[0026] During use, the user can rotate the operating handle 6, drive the worm 11 to move, and then drive the valve core 9 to move to achieve opening and closing operations based on the transmission function formed by the worm 11 and the worm wheel 12. Moreover, by utilizing the self-locking function of the worm wheel 12 and the worm 11, it is ensured that the valve core 9 will not drive the worm wheel 12 to push the worm 11 to move due to the action of medium erosion. This enables the device to achieve good self-locking and anti-loosening protection;

[0027] A composite rubber spring 18 is fixed inside the casing 13. One side of the composite rubber spring 18 is connected to a self-locking insert block 14 that matches the operating handle 6. A pressing piece 10 is welded to the side of the self-locking insert block 14 close to the composite rubber spring 18;

[0028] During use, the user can press the pressing piece 10, causing the self-locking insert block 14 to compress the composite rubber spring 18. At this time, the self-locking insert block 14 will disengage from the inner groove of the operating handle 6. Then, the user can rotate the operating handle 6 to control the opening and closing of the device. Subsequently, when the pressing piece 10 is released, the self-locking insert block 14 can be embedded inside the rotating operating handle 6 and pressed tightly under the elastic action of the composite rubber spring 18 for self-locking limit protection;

[0029] Flange plates 5 are welded to both ends of the lower hemispherical valve casing 4. A lubricating oil storage box 1 connected to the valve core 9 is fixed to the top of the casing 13. Oil discharge holes 8 are evenly arranged on the outer side wall of the valve core 9. A ball 7 is movably connected inside the oil discharge hole 8;

[0030] During use, when the valve core 9 rotates inside the upper valve casing 2 and the lower hemispherical valve casing 4 to achieve opening and closing control, the balls 7 on the upper surface of the valve core 9 will roll accordingly, thereby taking out the oil liquid inside the oil discharge hole 8 connected to the lubricating oil storage box 1, realizing the lubrication protection of the moving surfaces between the valve core 9 and the upper valve casing 2 and the lower hemispherical valve casing 4. This is beneficial for protecting the valve core 9, reducing the wear effect, and extending the service life of the valve core 9;

[0031] Assembly plates 3 are welded to the bottom of the upper valve casing 2 and the top of the lower hemispherical valve casing 4. Screws are evenly threadedly connected to the assembly plates 3, making it convenient to disassemble, assemble, and maintain between the upper valve casing 2 and the lower hemispherical valve casing 4 by using the assembly plates 3;

[0032] A rubber sealing layer is vulcanized and connected to the assembly plates 3, improving the sealing effect when the upper valve casing 2 and the lower hemispherical valve casing 4 are assembled;

[0033] Silicone rubber sealing rings 16 are inlaid on the side of the flange plate 5 away from the lower hemispherical valve casing 4, improving the sealing performance when the flange plate 5 is installed;

[0034] The interior of the flange 5 is provided with a threaded installation groove 17, and a stainless steel filter screen 15 is threadedly connected to the threaded installation groove 17, so that the flange 5 can provide filtering and anti-blocking protection for the interior of the lower hemispherical valve housing 4;

[0035] The outer side wall of the stainless steel filter screen 15 and the inner side walls of the upper valve housing 2 and the lower hemispherical valve housing 4 are all provided with nano-ceramic anti-adhesion layers, which improve the wear-resistant and anti-adhesion properties of the stainless steel filter screen 15, the upper valve housing 2 and the lower hemispherical valve housing 4;

[0036] The valve core 9 has a hollow structure, and the bottom of the lubricating oil storage box 1 is communicated with the interior of the valve core 9;

[0037] The worm 11 longitudinally penetrates through one side of the machine housing 13, and a dismountable installation structure is formed between the operating handle 6 and the worm 11 through screws.

[0038] When the embodiment of the present application is in use: First, the user can utilize the flanges 5 provided at both ends of the lower hemispherical valve housing 4 to realize the flange assembly of the device on the corresponding pipeline equipment. During actual operation, the user can rotate the operating handle 6 to drive the worm 11 to move, and then based on the transmission action formed by the worm 11 and the worm gear 12, drive the valve core 9 to move to realize the opening and closing operation. And by using the self-locking function of the worm gear 12 and the worm 11, it is ensured that the valve core 9 will not drive the worm gear 12 to push the worm 11 to move due to the action of medium erosion. This enables the device to achieve good self-locking and anti-loosening protection. Moreover, the user can press the pressing piece 10, so that the self-locking insert block 14 compresses the composite rubber spring 18. At this time, the self-locking insert block 14 will disengage from the inner groove of the operating handle 6. Then, the user can rotate the operating handle 6 to control the opening and closing of the device. Subsequently, when the pressing piece 10 is released, the self-locking insert block 14 can be embedded in the interior of the rotating operating handle 6 and pressed tightly under the elastic action of the composite rubber spring 18 for self-locking limit protection. At the same time, when the valve core 9 rotates inside the upper valve housing 2 and the lower hemispherical valve housing 4 to realize the opening and closing control, the balls 7 on the upper surface of the valve core 9 will roll accordingly, thereby bringing out the oil liquid in the oil discharge hole 8 communicated with the lubricating oil storage box 1, realizing the lubrication protection for the moving surfaces between the valve core 9 and the upper valve housing 2 and the lower hemispherical valve housing 4. This is beneficial to protecting the valve core 9, reducing the wear effect, and prolonging the service life of the valve core 9. In addition, on the one hand, by embedding a silicone rubber sealing ring 16 on the side of the flange 5 away from the lower hemispherical valve housing 4, the sealing performance during the installation of the flange 5 is improved. On the other hand, by providing a threaded installation groove 17 inside the flange 5 and threadedly connecting a stainless steel filter screen 15 to the threaded installation groove 17, the flange 5 can provide filtering and anti-blocking protection for the interior of the lower hemispherical valve housing 4.

Claims

1. A self-locking hemispherical valve, characterized in that: The invention comprises a lower hemispherical valve housing (4) and a housing (13), wherein an upper valve housing (2) is mounted on the top of the lower hemispherical valve housing (4), a valve core (9) matching the lower hemispherical valve housing (4) is movably connected to the interior of the upper valve housing (2), the housing (13) is welded to one side of the top of the upper valve housing (2), a worm gear (12) welded to the valve core (9) is movably connected to the interior of the housing (13), a worm (11) is movably connected to the interior of the housing (13) at one end of the worm gear (12), an operating handle (6) is mounted on one side of the worm gear (11), and the housing (13) is provided with a plurality of worm gears. A composite rubber spring (18) is fixed inside, one side of the composite rubber spring (18) is connected to a self-locking plug (14) matching the operating handle (6), a pressing plate (10) is welded to the side of the self-locking plug (14) close to the composite rubber spring (18), flanges (5) are welded to both ends of the lower hemispherical valve housing (4), a lubricating oil storage box (1) connected to the valve core (9) is fixed to the top of the housing (13), and oil drain holes (8) are evenly arranged on the outer wall of the valve core (9), and a ball (7) is movably connected inside the oil drain hole (8).

2. A self-locking hemispherical valve according to claim 1, characterized in that: The bottom of the upper valve housing (2) and the top of the lower hemispherical valve housing (4) are both welded with an assembly plate (3), and screws are evenly threadedly connected on the assembly plate (3).

3. A self-locking hemispherical valve according to claim 2, characterized in that: A rubber sealing layer is vulcanized and connected to the assembly plate (3).

4. A self-locking hemispherical valve according to claim 1, characterized in that: A silicone rubber sealing ring (16) is embedded on the side of the flange (5) away from the lower hemispherical valve housing (4).

5. The self-locking hemispherical valve according to claim 1, characterized in that: A threaded mounting groove (17) is provided inside the flange (5), and a stainless steel filter screen (15) is threadedly connected to the threaded mounting groove (17).

6. A self-locking hemispherical valve according to claim 5, characterized in that: The outer wall of the stainless steel filter (15) and the inner walls of the upper valve housing (2) and the lower hemispherical valve housing (4) are all provided with a nano-ceramic anti-sticking layer.

7. A self-locking hemispherical valve according to claim 1, characterized in that: The valve core (9) has a hollow structure, and the bottom of the lubricating oil storage box (1) is connected to the interior of the valve core (9).

8. The self-locking hemispherical valve according to claim 1, characterized in that: The worm (11) passes through one side of the housing (13) longitudinally, and a disassembly and installation structure is formed between the operating handle (6) and the worm (11) via screws.

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