Ferrule type high-pressure plug valve

Abstract

The utility model relates to the field of valves, in particular to a ferrule type high-pressure plug valve. An existing valve is not good enough in sealing performance, and valve leakage is easily caused. A clamping sleeve type high-pressure plug valve comprises a valve body, a valve cover and the like. A valve cover is fixedly connected to the valve body, and ports are formed in the two ends of the valve body respectively. When the pushing frames rotate reversely, the pushing frames are extruded by sliding grooves in pressing plates, so that the four pushing frames move in the direction away from one another, the pushing frames drive rubber blocks and contact blocks to move, the contact blocks move to make contact with the sealing pieces and make the sealing pieces extrude the valve sleeve, and the pushing frames continue to move, so that the rubber blocks deform; and therefore, the force of the contact block for extruding the sealing piece and the valve sleeve is increased, the sealing performance of the valve is better, and the valve is not prone to leakage.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a ferrule type high-pressure plug valve. Background Art

[0002] Plug valves are widely used in oil field exploitation, transportation and refining equipment, and are also widely used in petroleum, chemical industry, gas, natural gas, liquefied petroleum gas, heating and ventilation industries, ships and general industries.

[0003] Generally, a plug valve is sealed by a plug valve core and a valve sleeve. The plug valve is continuously opened and closed, so that the plug valve core rotates, which causes the plug valve core and the valve sleeve to wear, resulting in a gap between the plug valve core and the valve sleeve, and further leading to the technical problems of poor sealing performance of the plug valve and valve leakage. Content of the Utility Model

[0004] In order to overcome the disadvantages of poor sealing performance of existing valves, which easily lead to valve leakage, the utility model provides a ferrule type high-pressure plug valve with better valve sealing performance and not easy to leak.

[0005] The technical solution is as follows: A ferrule type high-pressure plug valve includes a valve body, a valve cover, a plug valve core, a handle and a pressing plate. The valve cover is fixedly connected to the valve body. Through holes are respectively opened at both ends of the valve body. The plug valve core is rotatably connected to the valve body. A through hole is opened on the plug valve core. The plug valve core is rotatably connected to the valve cover. The upper end of the plug valve core is fixedly connected with a handle. The pressing plate is fixedly connected to the valve body. The pressing plate contacts with the valve cover and the plug valve core. A sealing component is arranged on the valve body and the plug valve core. An extrusion component is arranged on the plug valve core. A limiting component is arranged on the handle. The sealing component is used for valve sealing. The extrusion component is used for extruding the sealing component. The limiting component is used for limiting the handle.

[0006] Preferably, the sealing component includes a sealing ring, a valve sleeve and a sealing piece. Two sealing rings are fixedly connected to the valve body. The two sealing rings contact with the plug valve core. The valve sleeve is fixedly connected to the valve body. The valve sleeve contacts with the plug valve core. Two sealing pieces are fixedly connected to the plug valve core. The two sealing pieces contact with the valve sleeve.

[0007] Preferably, the extrusion component includes a contact block, a rubber block and a pushing frame. Four guide grooves are opened on the plug valve core. Contact blocks are respectively slidably connected in the four guide grooves of the plug valve core. A rubber block is fixedly connected to each contact block. A pushing frame is fixedly connected to each rubber block. The four pushing frames are all slidably connected to the plug valve core. A chute is opened on the pressing plate. The chute of the pressing plate is slidably connected to the four pushing frames.

[0008] Preferably, the limiting component includes a guide rod and a pressing rod. The guide rod is fixedly connected to the valve cover. The pressing rod is slidably connected to the handle. The guide rod contacts with the pressing rod.

[0009] Advantages of the utility model: 1. When the push frame reverses, it will be squeezed by the sliding groove on the pressure plate, causing the four push frames to move away from each other. The push frame will drive the rubber block and the contact block to move. The movement of the contact block will contact the sealing piece and cause the sealing piece to squeeze the valve sleeve. When the push frame continues to move, the rubber block will deform, thereby increasing the force of the contact block squeezing the sealing piece and the valve sleeve, thus improving the sealing performance of the valve better, and further making the valve not easy to leak.

[0010] 2. The staff reverses the handle, and the handle drives the lower pressing rod to reverse. Then the staff presses the lower pressing rod so that the lower pressing rod contacts the guide rod, so that the valve will not be accidentally touched when it is closed. Description of the Drawings

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0012] Figure 2 It is the first partial sectional three-dimensional structural schematic diagram of the utility model.

[0013] Figure 3 It is the second partial sectional three-dimensional structural schematic diagram of the utility model.

[0014] Figure 4 It is a three-dimensional structural schematic diagram of the pressure plate and the push frame of the utility model.

[0015] Figure 5 It is a partial three-dimensional structural schematic diagram of the utility model.

[0016] Reference numerals in the drawings: 1 - valve body, 2 - valve cover, 4 - plug valve core, 5 - handle, 6 - pressure plate, 7 - sealing ring, 71 - valve sleeve, 8 - sealing piece, 9 - contact block, 10 - rubber block, 11 - push frame, 12 - guide rod, 13 - lower pressing rod. Specific Embodiments

[0017] The following further describes the utility model in conjunction with the drawings and specific embodiments.

[0018] Embodiment 1: A ferrule type high-pressure plug valve, as Figures 1 - 5As shown, it includes a valve body 1, a valve cover 2, a plug valve core 4, a handle 5 and a pressing plate 6. The valve cover 2 is bolted to the valve body 1. Through holes are respectively formed at both ends of the valve body 1. The plug valve core 4 is rotatably connected to the valve body 1. A through hole is formed in the plug valve core 4. The plug valve core 4 is rotatably connected to the valve cover 2. The upper end of the plug valve core 4 is bolted to the handle 5. The pressing plate 6 is fixedly connected to the valve body 1. The pressing plate 6 contacts the valve cover 2 and the plug valve core 4. A sealing assembly is provided on the valve body 1 and the plug valve core 4. An extrusion assembly is provided on the plug valve core 4. A limiting assembly is provided on the handle 5. The sealing assembly is used for sealing the valve. The extrusion assembly is used for extruding the sealing assembly. The limiting assembly is used for limiting the handle 5.

[0019] The sealing assembly includes a sealing ring 7, a valve sleeve 71 and a sealing piece 8. Two sealing rings 7 are fixedly connected to the valve body 1. The two sealing rings 7 contact the plug valve core 4. The valve sleeve 71 is fixedly connected to the valve body 1. The valve sleeve 71 contacts the plug valve core 4. Two sealing pieces 8 are fixedly connected to the plug valve core 4. The two sealing pieces 8 contact the valve sleeve 71.

[0020] The extrusion assembly includes a contact block 9, a rubber block 10 and a push frame 11. Four guide grooves are formed in the plug valve core 4. The contact blocks 9 are respectively slidably connected in the four guide grooves of the plug valve core 4. A rubber block 10 is fixedly connected to each contact block 9. A push frame 11 is fixedly connected to each rubber block 10. The four push frames 11 are all slidably connected to the plug valve core 4. A chute is formed in the pressing plate 6. The chute of the pressing plate 6 is slidably connected to the four push frames 11.

[0021] At first, the rubber block 10 is in a compressed state. The force of compression of the rubber block 10 will squeeze the sealing piece 8 and the valve sleeve 71 together through the contact block 9. The staff rotates the handle 5. The rotation of the handle 5 will drive the plug valve core 4, the sealing ring 7, the contact block 9, the rubber block 10 and the push frame 11 to rotate. The rotation of the push frame 11 will be squeezed by the chute on the pressing plate 6, causing the four push frames 11 to move towards each other. The movement of the push frame 11 will drive the rubber block 10 and the contact block 9 to move, so that the contact block 9 no longer contacts the sealing piece 8, and the sealing piece 8 no longer contacts the valve sleeve 71 tightly, enabling the plug valve core 4 to rotate smoothly. The handle 5 continues to drive the plug valve core 4, the sealing ring 7, the contact block 9, the rubber block 10 and the push frame 11 to rotate. After the handle 5, the plug valve core 4, the sealing ring 7, the contact block 9, the rubber block 10 and the push frame 11 rotate 90 degrees, they stop rotating. The rotation of the plug valve core 4 by 90 degrees makes the through hole on the plug valve core 4 communicate with the two ports of the valve body 1. The staff reverses the handle 5. The reverse rotation of the handle 5 will drive the plug valve core 4, the sealing ring 7, the contact block 9, the rubber block 10 and the push frame 11 to rotate reversely. The reverse rotation of the push frame 11 will be squeezed by the chute on the pressing plate 6, causing the four push frames 11 to move away from each other. The push frame 11 will drive the rubber block 10 and the contact block 9 to move. The movement of the contact block 9 will contact the sealing piece 8 and cause the sealing piece 8 to squeeze the valve sleeve 71. The continuous movement of the push frame 11 will cause the rubber block 10 to deform, further increasing the force of the contact block 9 squeezing the sealing piece 8 and the valve sleeve 71, thereby improving the sealing performance of the valve better, and further making the valve not easy to leak. The handle 5 continues to reverse, driving the plug valve core 4, the sealing ring 7, the contact block 9, the rubber block 10 and the push frame 11 to rotate back to the original position.

[0022] Embodiment 2: On the basis of Embodiment 1, as Figures 1 - 5 shown, the limiting component includes a guide rod 12 and a pressing rod 13. The guide rod 12 is welded on the valve cover 2, and the pressing rod 13 is slidably connected to the handle 5. The guide rod 12 contacts the pressing rod 13.

[0023] At first, the staff lifts the pressing rod 13 so that the pressing rod 13 disengages from the guide rod 12. Then the staff rotates the handle 5, and the rotation of the handle 5 will drive the pressing rod 13 to rotate. The staff reverses the handle 5, and the handle 5 drives the pressing rod 13 to reverse. Then the staff presses the pressing rod 13 so that the pressing rod 13 contacts the guide rod 12, so that the valve will not be accidentally touched when it is closed.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ferrule type high-pressure plug valve, characterized in that, It includes a valve body (1), a valve cover (2), a plug valve core (4), a handle (5) and a pressing plate (6). The valve cover (2) is fixedly connected to the valve body (1). Through openings are respectively formed at both ends of the valve body (1). The plug valve core (4) is rotatably connected to the valve body (1). A through hole is formed in the plug valve core (4). The plug valve core (4) is rotatably connected to the valve cover (2). The upper end of the plug valve core (4) is fixedly connected to the handle (5). The pressing plate (6) is fixedly connected to the valve body (1). The pressing plate (6) is in contact with the valve cover (2) and the plug valve core (4). A sealing assembly is provided on the valve body (1) and the plug valve core (4). An extrusion assembly is provided on the plug valve core (4). A limiting assembly is provided on the handle (5). The sealing assembly is used for sealing the valve. The extrusion assembly is used for extruding the sealing assembly. The limiting assembly is used for limiting the handle (5).

2. The ferrule type high-pressure plug valve according to claim 1, wherein The sealing assembly includes a sealing ring (7), a valve sleeve (71) and a sealing piece (8). Two sealing rings (7) are fixedly connected to the valve body (1). The two sealing rings (7) are in contact with the plug valve core (4). The valve sleeve (71) is fixedly connected to the valve body (1). The valve sleeve (71) is in contact with the plug valve core (4). Two sealing pieces (8) are fixedly connected to the plug valve core (4). The two sealing pieces (8) are in contact with the valve sleeve (71).

3. The ferrule type high-pressure cock valve according to claim 2, characterized in that The extrusion assembly includes a contact block (9), a rubber block (10) and a pushing frame (11). Four guide grooves are formed in the plug valve core (4). The contact blocks (9) are respectively slidably connected in the four guide grooves of the plug valve core (4). A rubber block (10) is fixedly connected to each contact block (9). A pushing frame (11) is fixedly connected to each rubber block (10). The four pushing frames (11) are all slidably connected to the plug valve core (4). A chute is formed in the pressing plate (6). The chute of the pressing plate (6) is slidably connected to the four pushing frames (11).

4. The ferrule type high-pressure plug valve according to claim 3, characterized in that, The limiting assembly includes a guide rod (12) and a pressing rod (13). The guide rod (12) is fixedly connected to the valve cover (2). The pressing rod (13) is slidably connected to the handle (5). The guide rod (12) is in contact with the pressing rod (13).

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