Leakage-proof stop valve

Abstract

The utility model relates to the technical field of stop valves, and discloses a leakage-proof stop valve which comprises a valve body, a multifunctional adjusting mechanism is arranged in the valve body and comprises a butt joint block, the inner wall of the butt joint block is rotationally connected with a rotating rod, the top end of the rotating rod is fixedly connected with a handheld transverse rod, and the handheld transverse rod is fixedly connected with the valve body. Three sets of fastening bolts are arranged in the butt joint block, the outer surface of each set of fastening bolts is in threaded connection with two fastening nuts, and the outer surface of the butt joint block is fixedly connected with a first sealing sleeve. According to the leakage-proof stop valve, through mutual cooperation of the valve body, the butt joint block, the first sealing sleeve, the fastening bolt, the fastening nut, a rotating rod, a sealing bearing, a ball valve, a handheld cross rod, a mounting block and a filter screen, the butt joint block and the valve body can be installed in a butt joint mode through the fastening bolt and the fastening nut, and the sealing performance between the two structures can be improved through the first sealing sleeve; the sealing bearing can improve the sealing performance between the butt joint block and the rotating rod and the rotating flexibility of the rotating rod.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a leak-proof stop valve. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. When the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. Its working principle is to rely on the valve stem pressure to make the valve disc sealing surface fit tightly with the valve seat sealing surface to prevent the flow of medium. The connection methods of the stop valve generally include flange connection, threaded connection and welding connection.

[0003] The utility model with the existing authorization announcement number CN212959883U discloses a leak-proof stop valve with a self-adaptive valve seat hole. The stop valve is opened and closed by a hand wheel. The limit block slides in the guide rail to ensure the vertical linear movement of the U-shaped frame. The sealing ball can move in the rectangular frame. When the valve stem and the valve seat through hole are misaligned, the sealing ball will automatically roll and move to fit tightly with the valve seat through hole when contacting the valve seat through hole, always maintaining the sealing effect. The pressure block has a limiting effect on the sealing ball, ensuring that the sealing ball can be near the valve seat through hole when it descends, so that it can smoothly roll into the valve seat through hole to form a seal, which is very practical.

[0004] With the above technical solution, when the valve stem and the valve seat through hole are misaligned, the sealing ball will automatically roll and move to fit tightly with the valve seat through hole when contacting the valve seat through hole, always maintaining a sealing effect, and the sealing effect is good. However, the above technical solution lacks a liquid flow rate adjustment structure that can filter liquid impurities, resulting in the entire stop valve being unable to filter and block impurities in the liquid on the basis of adjusting the liquid flow rate. As a result, the stop valve is easily clogged by impurities, affecting its use effect and service life.

[0005] Therefore, those skilled in the art provide a leak-proof stop valve to solve the problems raised in the above background technology. Utility Model Content

[0006] The utility model aims to provide a leak-proof stop valve to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A leak-proof stop valve comprises a valve body, wherein a multifunctional regulating mechanism is arranged inside the valve body;

[0009] The multifunctional adjustment mechanism includes a docking block, the inner wall of the docking block is rotatably connected to a rotating rod, the top of the rotating rod is fixedly connected to a hand-grip cross bar, three groups of fastening bolts are arranged inside the docking block, the outer surface of each group of fastening bolts is threadedly connected to two fastening nuts, the outer surface of the docking block is fixedly connected to a first sealing sleeve, the inner wall of the docking block is fixedly connected to a sealing bearing, the bottom end of the rotating rod is fixedly connected to a ball valve, the inner wall of the ball valve is threadedly connected to a mounting block, and the inner wall of the mounting block is fixedly connected to a filter.

[0010] As a further solution of the utility model: the outer surface of the first sealing sleeve contacts the inner wall of the valve body, the outer surface of each group of the fastening bolts contacts the upper surface of the docking block, the top of each of the fastening nuts contacts the outer surface of the valve body, the bottom surface of the first sealing sleeve contacts the outer surface of the valve body, the inner ring of the sealing bearing is fixedly connected to the outer surface of the rotating rod, the outer surface of the ball valve contacts the inner wall of the valve body, a hand-tightened threaded rod is provided inside the valve body, a valve cover is threadedly connected to the outer surface of the valve body, and the inner wall of the valve cover is threadedly connected to the outer surface of the hand-tightened threaded rod.

[0011] As a further solution of the utility model: a valve core is arranged inside the valve body, a second sealing sleeve is fixedly connected to the outer surface of the valve core, and the outer surface of the second sealing sleeve is in contact with the inner wall of the valve body.

[0012] As a further solution of the utility model: the inner wall of the valve core is fixedly connected with a corrosion-resistant bearing, and the inner ring of the corrosion-resistant bearing is fixedly connected to the outer surface of the hand-tightened threaded rod.

[0013] As a further solution of the utility model: the inner wall of the valve cover is fixedly connected with a third sealing sleeve and a filling sealing block, the outer surface of the third sealing sleeve contacts the inner wall of the valve body, and the inner wall of the filling sealing block contacts the outer surface of the hand-tightened threaded rod.

[0014] As a further solution of the utility model: the outer surface of the hand-grip cross bar is fixedly connected with an anti-skid sleeve, and the outer surface of the anti-skid sleeve is fixedly connected with a plurality of identical anti-skid protrusions.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model cooperates with the valve body, the docking block, the first sealing sleeve, the fastening bolts, the fastening nuts, the rotating rod, the sealing bearing, the ball valve, the hand-held cross bar, the installation block and the filter screen. The fastening bolts and the fastening nuts can dock and install the docking block and the valve body. The first sealing sleeve can increase the sealing performance between the above two structures. The sealing bearing can increase the sealing performance between the docking block and the rotating rod and the rotation flexibility of the rotating rod. Then, the angle of the ball valve relative to the valve body and the orientation of the ball valve and the filter screen can be adjusted by twisting the hand-held cross bar. The ball valve with different orientations can adjust the flow rate of the liquid in the valve body. The filter can filter impurities in liquids with different flow rates, and to remove impurities from the ball valve, mounting block and filter, you only need to remove the fastening bolts and fastening nuts and then take the docking block out of the valve body. It can filter liquid impurities on the basis of adjusting the liquid flow rate in the valve body, thereby increasing the use effect and life of the stop valve, and avoids the problem that the entire stop valve is unable to filter and block impurities in the liquid on the basis of adjusting the liquid flow rate due to the lack of a liquid flow rate adjustment structure that can filter liquid impurities, and the stop valve is easily blocked by impurities, affecting the use effect and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a leak-proof stop valve;

[0018] Figure 2 It is a schematic diagram of a three-dimensional structure of a valve body in a leak-proof stop valve, viewed from above;

[0019] Figure 3 It is a schematic diagram of a side cutaway three-dimensional structure of a docking block in a leak-proof stop valve;

[0020] Figure 4 It is a schematic diagram of the cutaway three-dimensional structure of a ball valve in a leak-proof stop valve;

[0021] Figure 5 The present invention is a schematic diagram of a cutaway three-dimensional structure of a valve cover in a leak-proof stop valve.

[0022] In the figure: 1. valve body; 2. multifunctional adjusting mechanism; 201. docking block; 202. first sealing sleeve; 203. fastening bolt; 204. fastening nut; 205. rotating rod; 206. sealing bearing; 207. ball valve; 208. hand-held cross bar; 209. mounting block; 210. filter screen; 3. valve cover; 4. hand-tightened threaded rod; 5. valve core; 6. second sealing sleeve; 7. corrosion-resistant bearing; 8. filling sealing block; 9. third sealing sleeve; 10. anti-slip sleeve; 11. anti-slip boss. DETAILED DESCRIPTION

[0023] See also Figure 1-5A leak-proof stop valve comprises a valve body 1, a multifunctional adjusting mechanism 2 is arranged inside the valve body 1, the multifunctional adjusting mechanism 2 comprises a docking block 201, the inner wall of the docking block 201 is rotatably connected with a rotating rod 205, a hand-tightened threaded rod 4 is arranged inside the valve body 1, a valve cover 3 is threadedly connected to the outer surface of the valve body 1, the inner wall of the valve cover 3 is threadedly connected to the outer surface of the hand-tightened threaded rod 4, by providing the valve cover 3 and the hand-tightened threaded rod 4, the hand-tightened threaded rod 4 can rise or fall along the inner wall thread of the valve cover 3, so as to facilitate the rise or fall of the blocking structure below the hand-tightened threaded rod 4.

[0024] The top of the rotating rod 205 is fixedly connected to a hand-held cross bar 208, and three groups of fastening bolts 203 are arranged inside the docking block 201. The outer surface of each group of fastening bolts 203 contacts the upper surface of the docking block 201. A valve core 5 is arranged inside the valve body 1, and a second sealing sleeve 6 is fixedly connected to the outer surface of the valve core 5. The outer surface of the second sealing sleeve 6 contacts the inner wall of the valve body 1. By providing the second sealing sleeve 6, the contact sealing between the valve core 5 and the inner wall of the valve body 1 can be increased, thereby increasing the effect of the valve core 5 in sealing the liquid.

[0025] The outer surface of each set of fastening bolts 203 is threadedly connected to two fastening nuts 204, and the outer surface of the docking block 201 is fixedly connected to the first sealing sleeve 202, the bottom surface of the first sealing sleeve 202 contacts the outer surface of the valve body 1, the outer surface of the first sealing sleeve 202 contacts the inner wall of the valve body 1, and the top of each fastening nut 204 contacts the outer surface of the valve body 1. The inner wall of the valve core 5 is fixedly connected to a corrosion-resistant bearing 7, and the inner ring of the corrosion-resistant bearing 7 is fixedly connected to the outer surface of the hand-tightened threaded rod 4. By providing the corrosion-resistant bearing 7, the hand-tightened threaded rod 4 and the valve core 5 can be connected, and the inner and outer rings of the corrosion-resistant bearing 7 separate the rotation of the hand-tightened threaded rod 4 and the valve core 5, thereby preventing the valve core 5 from excessively rubbing against the inner wall of the valve body 1 when the valve core 5 blocks the liquid flow port on the inner wall of the valve body 1, thereby affecting the service life of the valve core 5.

[0026] The inner wall of the docking block 201 is fixedly connected with a sealing bearing 206, the bottom end of the rotating rod 205 is fixedly connected with a ball valve 207, the inner ring of the sealing bearing 206 is fixedly connected with the outer surface of the rotating rod 205, the outer surface of the ball valve 207 contacts the inner wall of the valve body 1, and the inner wall of the valve cover 3 is respectively fixedly connected with a third sealing sleeve 9 and a filling sealing block 8, the outer surface of the third sealing sleeve 9 contacts the inner wall of the valve body 1, and the inner wall of the filling sealing block 8 contacts the outer surface of the hand-tightened threaded rod 4. By providing the third sealing sleeve 9, the sealing between the valve cover 3 and the valve body 1 can be increased, and by providing the filling sealing block 8, the sealing between the valve cover 3 and the hand-tightened threaded rod 4 can be increased.

[0027] The inner wall of the ball valve 207 is threadedly connected to a mounting block 209, the inner wall of the mounting block 209 is fixedly connected to a filter screen 210, the outer surface of the hand-grip cross bar 208 is fixedly connected to an anti-slip sleeve 10, and the outer surface of the anti-slip sleeve 10 is fixedly connected to a plurality of identical anti-slip bosses 11. By providing the anti-slip bosses 11, the friction force of the outer surface of the anti-slip sleeve 10 can be increased, and then the anti-slip sleeve 10 and the anti-slip bosses 11 can jointly increase the friction force of the outer surface of the hand-grip cross bar 208.

[0028] The working principle of the utility model is: when in use, the valve body 1 is sealed and connected with the corresponding liquid pipeline through the flange structures at both ends. Later, when it is necessary to completely stop the liquid in the stop valve, the hand-tightened threaded rod 4 is twisted to make the hand-tightened threaded rod 4 descend along the inner wall thread of the valve cover 3, and the valve core 5 and the second sealing sleeve 6 are used to seal the opening of the liquid flowing through the inner wall of the valve body 1 with the assistance of the corrosion-resistant bearing 7. When it is necessary to adjust the flow rate of the liquid in the valve body 1 and filter the liquid impurities at the same time, the anti-skid sleeve 10 and the anti-skid protrusion 11 on the outer surface of the hand-gripped crossbar 208 are pinched and the hand-gripped crossbar 208 is rotated. With the sealing and rotation assistance of the sealing bearing 206, the mounting block 209 and the filter screen 210 rotate on the inner wall of the valve body 1 along with the ball valve 207. The different angles of the ball valve 207 relative to the valve body 1 restrict the flow rate of the liquid passing through the filter screen 210 differently. At the same time, the filter screen 210 can filter impurities in the liquid. When it is necessary to clean the impurities at the filter screen 210, the fastening bolts 203 and the fastening nuts 204 are removed, and the docking block 201 is pulled out of the valve body 1. After the mounting block 209 is unscrewed from the inside of the ball valve 207 with a hexagonal wrench, the inner walls of the ball valve 207 and the mounting block 209 and the outer surface of the filter screen 210 can be cleaned. In this way, while the liquid flow rate in the valve body 1 can be adjusted, liquid impurities can be prevented from accumulating and clogging the liquid flow port near the valve core 5 in the valve body 1, thereby increasing the use effect and service life of the entire stop valve. The design of the entire leak-proof stop valve effectively solves the problem that the entire stop valve is unable to filter and block impurities in the liquid on the basis of adjusting the liquid flow rate due to the lack of a liquid flow rate adjustment structure that can filter liquid impurities, and the stop valve is easily blocked by impurities, affecting the use effect and service life.

[0029] What is described above 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leak-proof stop valve, comprising a valve body (1), characterized in that: A multifunctional regulating mechanism (2) is arranged inside the valve body (1); The multifunctional adjustment mechanism (2) comprises a docking block (201), the inner wall of the docking block (201) is rotatably connected to a rotating rod (205), the top of the rotating rod (205) is fixedly connected to a hand-grip cross bar (208), three groups of fastening bolts (203) are arranged inside the docking block (201), the outer surface of each group of fastening bolts (203) is threadedly connected to two fastening nuts (204), the outer surface of the docking block (201) is fixedly connected to a first sealing sleeve (202), the inner wall of the docking block (201) is fixedly connected to a sealing bearing (206), the bottom end of the rotating rod (205) is fixedly connected to a ball valve (207), the inner wall of the ball valve (207) is threadedly connected to a mounting block (209), and the inner wall of the mounting block (209) is fixedly connected to a filter screen (210).

2. A leak-proof stop valve according to claim 1, characterized in that: The outer surface of the first sealing sleeve (202) contacts the inner wall of the valve body (1), the outer surface of each group of the fastening bolts (203) contacts the upper surface of the docking block (201), the top of each fastening nut (204) contacts the outer surface of the valve body (1), the bottom surface of the first sealing sleeve (202) contacts the outer surface of the valve body (1), the inner ring of the sealing bearing (206) is fixedly connected to the outer surface of the rotating rod (205), the outer surface of the ball valve (207) contacts the inner wall of the valve body (1), a hand-tightened threaded rod (4) is arranged inside the valve body (1), the outer surface of the valve body (1) is threadedly connected to a valve cover (3), and the inner wall of the valve cover (3) is threadedly connected to the outer surface of the hand-tightened threaded rod (4).

3. A leak-proof stop valve according to claim 2, characterized in that: A valve core (5) is arranged inside the valve body (1), and a second sealing sleeve (6) is fixedly connected to the outer surface of the valve core (5), and the outer surface of the second sealing sleeve (6) is in contact with the inner wall of the valve body (1).

4. A leak-proof stop valve according to claim 3, characterized in that: The inner wall of the valve core (5) is fixedly connected with a corrosion-resistant bearing (7), and the inner ring of the corrosion-resistant bearing (7) is fixedly connected to the outer surface of the hand-tightened threaded rod (4).

5. The leak-proof stop valve according to claim 2, characterized in that: The inner wall of the valve cover (3) is respectively fixedly connected with a third sealing sleeve (9) and a filling sealing block (8); the outer surface of the third sealing sleeve (9) contacts the inner wall of the valve body (1); and the inner wall of the filling sealing block (8) contacts the outer surface of the hand-tightened threaded rod (4).

6. The leak-proof stop valve according to claim 1, characterized in that: The outer surface of the hand-grip crossbar (208) is fixedly connected to an anti-skid sleeve (10), and the outer surface of the anti-skid sleeve (10) is fixedly connected to a plurality of identical anti-skid convex columns (11).

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