Pipeline regulating valve

Abstract

The utility model relates to the technical field of regulating valves, and discloses a pipeline regulating valve which comprises a valve body, a valve rod is installed on the upper portion of the interior of the valve body, padding is arranged on the upper portion of the interior of the valve body, the padding is arranged on the outer wall of the valve rod, and the outer wall of the valve rod is in threaded connection with the upper portion of the valve body. The top end of the valve rod extends to the position above the valve body and is fixedly connected with a hand wheel, and a limiting protection mechanism is arranged above the two sides of the valve body and comprises two threaded cylinders. Through cooperation of the threaded cylinder, the supporting frame, the lifting block, the positioning inserting rod, the rotating block and the positioning inserting opening, the height position of the positioning inserting rod can be conveniently and vertically adjusted, the top end of the positioning inserting rod can be inserted into any positioning inserting opening in the bottom of a hand wheel, and therefore the hand wheel can be conveniently limited and fixed; the situation that the regulating valve is opened and closed accidentally due to the fact that the valve rod is driven to rotate when the hand wheel is accidentally touched is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, and more specifically to a pipeline regulating valve. Background Art

[0002] The regulating valve is an important control device in the pipeline. It controls the flow, pressure, temperature and other parameters of the fluid by changing the position of the valve core inside it. The regulating valve can adjust the fluid in the pipeline system in real time to keep the flow, pressure, temperature and other parameters at the set values.

[0003] At present, the valve stem and handwheel of the regulating valve are fixed together. When the regulating valve is in use, the handwheel is easily affected by various external factors, which may cause accidental contact and cause the valve stem to rotate. This may easily lead to accidental opening and closing of the regulating valve, affecting normal operation and needs to be improved. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a pipeline regulating valve to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical scheme: a pipeline regulating valve, comprising a valve body, a valve stem is installed above the inner part of the valve body, a packing is arranged above the inner part of the valve body, the packing is arranged on the outer wall of the valve stem, the outer wall of the valve stem is threadedly connected to the upper part of the valve body, the top of the valve stem extends to the upper part of the valve body and is fixedly connected with a handwheel, and a limit protection mechanism is arranged above both sides of the valve body, the limit protection mechanism comprises two threaded barrels, the interiors of the two threaded barrels are threadedly sleeved with lifting blocks, a positioning rod is arranged inside the threaded barrel, the bottom end of the positioning rod is fixedly connected to the top of the lifting block, the bottom end of the valve stem is fixedly connected to the valve core, the outer wall of the valve core is fixedly connected to the metal sealing ring, an annular mounting groove is opened below the outer wall of the valve core, and an annular sealing ring is fixedly installed inside the annular mounting groove.

[0006] Furthermore, support frames are fixedly connected above both sides of the valve body, and the bottom end of the threaded cylinder is fixedly connected to the top of the support frame.

[0007] Furthermore, the top end of the positioning rod extends to the top of the threaded barrel, a rotating block is fixedly sleeved on the top of the outer wall of the positioning rod, and the bottom of the handwheel is evenly provided with multiple positioning sockets that are compatible with the top end of the positioning rod, and the top end of the positioning rod is located below any one of the positioning sockets.

[0008] Furthermore, a valve seat is fixedly connected to the interior of the valve body, a guide channel adapted to the outer wall of the valve core is opened in the middle of the valve seat, and the guide channel is located directly below the valve core.

[0009] Furthermore, an annular sealing groove matched with the outer wall of the metal sealing ring is formed on the inner wall of the guide channel, and the annular sealing groove is located directly below the metal sealing ring.

[0010] Technical effects and advantages of the utility model:

[0011] 1. The utility model adopts the cooperation of the threaded cylinder, the support frame, the lifting block, the positioning rod, the rotating block and the positioning socket to facilitate the vertical adjustment of the height position of the positioning rod. The top end of the positioning rod can be inserted into the inside of any positioning socket at the bottom of the handwheel, so as to facilitate the limiting fixation of the handwheel and avoid the valve stem from rotating when the handwheel is accidentally touched, resulting in accidental opening and closing of the regulating valve.

[0012] 2. The utility model adopts the cooperation of the valve body, valve stem, hand wheel, valve seat, guide channel, annular sealing groove, valve core, metal sealing ring, annular mounting groove and annular sealing ring. When closing the regulating valve, the valve stem and valve core can be controlled to move by the hand wheel, and the valve core can be moved to the inside of the guide channel on the valve seat to perform the closing operation. At the same time, the cooperation of the metal sealing ring, the annular mounting groove and the annular sealing ring can facilitate the increase of the sealing between the valve core and the guide channel when closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a schematic cross-sectional view of the threaded barrel structure of the utility model.

[0015] Figure 3 It is a bottom view schematic diagram of the hand wheel and positioning socket structure of the utility model.

[0016] Figure 4 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0017] The accompanying drawings are marked as follows: 1. valve body; 2. valve stem; 3. hand wheel; 4. limit protection mechanism; 5. packing; 6. valve seat; 7. guide channel; 8. annular sealing groove; 9. valve core; 10. metal sealing ring; 11. annular sealing ring; 41. threaded cylinder; 42. support frame; 43. lifting block; 44. positioning rod; 45. rotating block; 46. positioning socket. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The pipeline regulating valve involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] like Figure 1-4 As shown, a pipeline regulating valve comprises a valve body 1, a valve stem 2 is installed above the interior of the valve body 1, a packing 5 is provided above the interior of the valve body 1, the packing 5 is arranged on the outer wall of the valve stem 2, the outer wall of the valve stem 2 is threadedly connected to the upper part of the valve body 1, the top of the valve stem 2 extends to the upper part of the valve body 1 and is fixedly connected with a hand wheel 3, the bottom end of the valve stem 2 is fixedly connected with a valve core 9, the outer wall of the valve core 9 is fixedly connected with a metal sealing ring 10, an annular mounting groove is provided below the outer wall of the valve core 9, an annular sealing ring 11 is fixedly installed inside the annular mounting groove, a valve seat 6 is fixedly connected inside the valve body 1, a guide channel 7 adapted to the outer wall of the valve core 9 is provided in the middle part of the valve seat 6, the guide channel 7 is located directly below the valve core 9, an annular sealing groove 8 adapted to the outer wall of the metal sealing ring 10 is provided on the inner wall of the guide channel 7, and the annular sealing groove 8 is located directly below the metal sealing ring 10.

[0021] In this embodiment, the staff can control the movement of the valve stem 2 and the valve core 9 by turning the hand wheel 3, so as to move the valve core 9 and the annular sealing ring 11 to the inside of the guide channel 7 on the valve seat 6 to close the regulating valve, and use the annular sealing ring 11 to increase the sealing between the valve core 9 and the guide channel 7. When the valve core 9 moves, it drives the metal sealing ring 10 to move to the inside of the annular sealing groove 8, so as to further increase the sealing between the valve core 9 and the guide channel 7 and avoid leakage between the valve core 9 and the guide channel 7.

[0022] Embodiment 2:

[0023] like Figure 1-4As shown, a limit protection mechanism 4 is provided above both sides of the valve body 1, and the limit protection mechanism 4 includes two threaded barrels 41, and the interiors of the two threaded barrels 41 are threadedly sleeved with lifting blocks 43, and a positioning rod 44 is provided inside the threaded barrel 41, and the bottom end of the positioning rod 44 is fixedly connected to the top of the lifting block 43, and the upper sides of the valve body 1 are fixedly connected with a support frame 42, and the bottom end of the threaded barrel 41 is fixedly connected to the top of the support frame 42, and the top of the positioning rod 44 extends to the top of the threaded barrel 41, and a rotating block 45 is fixedly sleeved on the upper outer wall of the positioning rod 44, and a plurality of positioning sockets 46 that are compatible with the top ends of the positioning rods 44 are evenly opened at the bottom of the handwheel 3, and the top end of the positioning rod 44 is located below any one of the positioning sockets 46.

[0024] In this embodiment, the support frame 42 is provided to facilitate supporting the threaded barrel 41. The rotating block 45 is provided to facilitate the staff to rotate the positioning rod 44 and the lifting block 43, so that the lifting block 43 can move spirally inside the threaded barrel 41. When the lifting block 43 moves, the top end of the positioning rod 44 can be driven upward to be inserted into any positioning socket 46 at the bottom of the hand wheel 3, thereby facilitating the limiting and fixing of the hand wheel 3.

[0025] In summary, if Figure 1-4 As shown, when using this kind of pipeline regulating valve, if it is necessary to close the regulating valve, the staff can turn the hand wheel 3 and control the movement of the valve stem 2 and the valve core 9, and can move the valve core 9 and the annular sealing ring 11 to the inside of the guide channel 7 on the valve seat 6 to perform a closing operation. The valve core 9 also drives the metal sealing ring 10 to move to the inside of the annular sealing groove 8, so as to further seal the valve core 9 and the guide channel 7. If it is necessary to fix the hand wheel 3, the staff can rotate the positioning rod 44 through the rotating block 45, and the bottom end of the positioning rod 44 drives the lifting block 43 to move upward in the threaded cylinder 41. The lifting block 43 drives the top end of the positioning rod 44 to be inserted upward into any one of the positioning sockets 46 at the bottom of the hand wheel 3, thereby facilitating the limiting and fixing of the hand wheel 3.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A pipeline regulating valve, comprising a valve body (1), characterized in that: A valve stem (2) is installed above the interior of the valve body (1), a packing (5) is provided above the interior of the valve body (1), the packing (5) is arranged on the outer wall of the valve stem (2), the outer wall of the valve stem (2) is threadedly connected to the top of the valve body (1), the top end of the valve stem (2) extends to the top of the valve body (1) and is fixedly connected to a hand wheel (3), and a limit protection mechanism (4) is provided above both sides of the valve body (1), the limit protection mechanism (4) includes two threaded cylinders (41), the two threaded cylinders (42) and the two threaded cylinders (43) are connected to the top of the valve body (1). The interior of the threaded barrel (41) is threadedly sleeved with a lifting block (43), and a positioning rod (44) is provided inside the threaded barrel (41). The bottom end of the positioning rod (44) is fixedly connected to the top of the lifting block (43). The bottom end of the valve stem (2) is fixedly connected to a valve core (9), and the outer wall of the valve core (9) is fixedly connected to a metal sealing ring (10). An annular installation groove is provided below the outer wall of the valve core (9), and an annular sealing ring (11) is fixedly installed inside the annular installation groove.

2. A pipeline regulating valve according to claim 1, characterized in that: A support frame (42) is fixedly connected above both sides of the valve body (1), and the bottom end of the threaded cylinder (41) is fixedly connected to the top of the support frame (42).

3. A pipeline regulating valve according to claim 1, characterized in that: The top end of the positioning rod (44) extends to the top of the threaded tube (41), and a rotating block (45) is fixedly sleeved on the top of the outer wall of the positioning rod (44). The bottom of the hand wheel (3) is evenly provided with a plurality of positioning sockets (46) adapted to the top end of the positioning rod (44), and the top end of the positioning rod (44) is located below any one of the positioning sockets (46).

4. A pipeline regulating valve according to claim 1, characterized in that: The valve body (1) is fixedly connected to a valve seat (6) inside, and a guide channel (7) adapted to the outer wall of the valve core (9) is provided in the middle of the valve seat (6), and the guide channel (7) is located directly below the valve core (9).

5. A pipeline regulating valve according to claim 4, characterized in that: The inner wall of the guide channel (7) is provided with an annular sealing groove (8) adapted to the outer wall of the metal sealing ring (10), and the annular sealing groove (8) is located directly below the metal sealing ring (10).

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