CN211599548U - Flow control valve - Google Patents
Flow control valve Download PDFInfo
- Publication number
- CN211599548U CN211599548U CN202020052262.3U CN202020052262U CN211599548U CN 211599548 U CN211599548 U CN 211599548U CN 202020052262 U CN202020052262 U CN 202020052262U CN 211599548 U CN211599548 U CN 211599548U
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- valve
- valve rod
- connecting cylinder
- valve body
- flow control
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Abstract
The utility model discloses a flow control valve, which mainly comprises a valve body; the valve body comprises a valve rod, a valve core, a connecting cylinder and a fastening nut; the top of the valve core is integrally provided with a joint; the bottom of the valve rod is provided with threads; one end of the connecting cylinder is in interference fit connection with the joint, and the other end of the connecting cylinder is in threaded connection with the bottom of the valve rod; fastening nuts are arranged at two ends of the connecting cylinder; the fastening nut is fixedly welded after being in threaded connection with the valve rod and the valve core; the valve core and the valve rod are integrated by adding the connecting cylinder, and the impact force of the fluid is uniformly dispersed between the valve rod and the connecting cylinder, so that the valve rod cannot be broken due to impact; the both ends of connecting cylinder still are provided with fastening nut, and fastening nut is earlier fixed through the rotation, then through welded fastening, has further strengthened being connected of connecting cylinder with valve rod, case to further strengthen the joint strength between valve rod and the case, make the case valve rod can bear huge impact force.
Description
Technical Field
The utility model relates to a control flap field especially relates to a flow control valve.
Background
The flow control valve controls the flow of the throttling orifice by changing the size of the hydraulic resistance of the throttling orifice under a certain pressure difference, thereby regulating the movement speed of the actuating element. The common flow control valve mainly comprises a throttle valve, a speed regulating valve, an overflow throttle valve, a flow distributing and collecting valve and the like, a valve core and a valve rod of the common flow control valve are fixedly connected by threads and pins, in the actual use process, although the pins can be used for preventing the valve rod from being screwed out of the valve core, the strength of the valve rod at a pin hole is greatly reduced, in the process of opening or closing the valve, the impact force brought by fluid is completely concentrated at the connection position of the valve rod and the valve core, so that the valve rod is easily broken at the pin hole, and the service life of the whole throttle valve is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves is: provided is a flow rate control valve capable of improving the connection strength between a valve element and a valve rod.
In order to solve the main technical problems, the following technical scheme is adopted:
a flow control valve comprising a valve body; the valve body comprises a valve rod, a valve core, a connecting cylinder and a fastening nut; the top of the valve core is integrally provided with a joint; the bottom of the valve rod is provided with threads; one end of the connecting cylinder is in interference fit connection with the joint, and the other end of the connecting cylinder is in threaded connection with the bottom of the valve rod; fastening nuts are arranged at two ends of the connecting cylinder; and the fastening nut is fixedly welded after being in threaded connection with the valve rod and the valve core.
Preferably, the thread of the valve rod connected with the connecting cylinder is different from the thread of the valve rod connected with the fastening nut.
Preferably, the outer surface of the connector barrel is smoothly curved in its axial direction.
Preferably, the inlet of the valve body is connected with an inlet pipeline through an inlet flange; the outlet of the valve body is connected with an outlet pipeline through an outlet flange; and the inlet flange and the outlet flange are both provided with gaskets.
Preferably, a sealing plate is arranged at the top of the valve rod; the sealing plate is fixed on the inner surface of the valve body; the valve stem passes through the seal plate.
Preferably, the top of the valve body is provided with an air flow port; the airflow port is positioned above the sealing plate; the air flow openings are uniformly distributed in the circumferential direction of the top of the valve body; the pressure of the airflow port is greater than or equal to the pressure of the fluid inside the valve body.
Compared with the prior art, the utility model discloses be applied to the flow control utensil and prepare following advantage:
one end of the connecting cylinder is connected with the valve core in an interference fit mode, the other end of the connecting cylinder is connected with the valve rod through threads, the connecting cylinder, the valve core and the valve rod are integrated through the added connecting cylinder, and the impact force of fluid is uniformly dispersed between the valve rod and the connecting cylinder, so that the valve rod cannot be broken due to impact; the both ends of connecting cylinder still are provided with fastening nut, and fastening nut is earlier fixed through the rotation, then through welded fastening, has further strengthened being connected of connecting cylinder with valve rod, case to further strengthen the joint strength between valve rod and the case, make the case valve rod can bear huge impact force.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.
Fig. 1 is a schematic structural diagram of a flow control valve according to an embodiment of the present invention.
In the figure: the valve comprises a valve body 1, a valve rod 2, a valve core 3, a joint 4, a connecting cylinder 5, a fastening nut 6, an inlet flange 7, an outlet flange 8, a sealing plate 9 and an airflow port 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a flow control valve includes a valve body 1; the valve body 1 comprises a valve rod 2, a valve core 3, a connecting cylinder 5 and a fastening nut 6; the top of the valve core 3 is integrally provided with a joint 4, the middle of the valve core 3 is provided with the joint 4 along the axial direction thereof, and the joint 4 and the valve core 3 are integrally formed; the bottom of the valve rod 2 is provided with threads, and the outer surface of the bottom of the valve rod 2 is provided with threads; one end of the connecting cylinder 5 is in interference connection with the connector 4, the other end of the connecting cylinder is in threaded connection with the bottom of the valve rod 2, the end part of the bottom of the connecting cylinder 5 is in interference connection with the connector 4, and the end part of the top of the connecting cylinder is fixedly connected with the valve rod 2 through the rotation of threads; the two ends of the connecting cylinder 5 are provided with fastening nuts 6, the surface of the valve rod 2 is sleeved with the fastening nuts 6, and the surface of the valve core 3 is also sleeved with the fastening nuts 6; the fastening nut 6 is in threaded connection with the valve rod 2 and the valve core 3 and then is fixed by welding, the fastening nut 6 is fixed with the connecting cylinder 5 by welding after the fastening nut 6 is screwed with the valve rod 2 by threaded connection, the fastening nut 6 is fixed with the connecting cylinder 5 by welding after the fastening nut 6 is screwed with the valve core 3 by threaded connection, and when the fastening nut 6 is fixed with the connecting cylinder 5, because the outer surfaces of the valve rod 2 and the joint 4 are both provided with threads, the end face welding can be carried out on the side, close to the valve rod 2 or the valve core 3, of the fastening nut 6, so that the welding strength is ensured; a connecting cylinder 5 is arranged between the valve rod 2 and the valve core 3, so that the valve rod 2 and the valve core 3 are connected into a whole, and the impact force of fluid is uniformly dispersed to the whole of the valve rod 2 and the valve core 3, so that the valve rod 2 cannot be broken due to impact; valve rod 2 is threaded connection with connecting cylinder 5, and case 3 is interference connection with connecting cylinder 5, and the both ends of connecting cylinder 5 still are provided with fastening nut 6, and fastening nut 6's existence has further strengthened connecting cylinder 5 and valve rod 2, case 3 be connected to the joint strength between valve rod 2 and the case 3 has further been strengthened.
Further, the screw thread turning direction of the valve rod 2 connected with the connecting cylinder 5 is different from the screw thread turning direction of the valve rod 2 connected with the fastening nut 6, the bottom of the valve rod 2 is provided with two sections of screw threads, and the turning directions of the two sections of screw threads are different, so that the connecting strength between the fastening nut 6 and the valve rod 2 is higher.
Further, the outer surface of the connecting cylinder 5 is a smooth arc shape along the axial direction thereof, the outer surface of the connecting cylinder 5 is a wooden barrel shape symmetrical along the axial direction thereof, the arc shape faces the inlet of the fluid, and the smooth arc shape can help to alleviate the impact of the fluid on the connecting cylinder 5.
Further, the inlet of the valve body 1 is connected with an inlet pipeline through an inlet flange 7; the outlet of the valve body 1 is connected with an outlet pipeline through an outlet flange 8; the inlet flange 7 and the outlet flange 8 are both provided with gaskets, the inlet flange 7 and the outlet flange 8 are connected, the connection is simple, the replacement is easy, and the inlet flange 7 and the outlet flange 8 are both provided with gaskets, so that the sealing is tighter.
Further, a sealing plate 9 is arranged at the top of the valve rod 2; the sealing plate 9 is fixed on the inner surface of the valve body 1; the valve rod 2 passes through the sealing plate 9, the top of the valve rod 2 is isolated from fluid in the valve body 1 by the sealing plate 9, so that an adjusting mechanism on the top of the valve rod 2 cannot be polluted or corroded by the fluid, and the sealing plate 9 is fixedly connected in a welding mode and the like.
Further, the top of the valve body 1 is provided with an air flow port 10; the airflow port 10 is positioned on the sealing plate 9, the airflow port 10 penetrates from the outer surface of the valve body 1 to the interior of the valve body 1, and the gas of the airflow port 10 only enters a cavity formed by the sealing plate 9 and the valve body 1; the gas flow ports 10 are uniformly distributed in the circumferential direction of the top of the valve body 1, and the gas in the gas flow ports 10 can be blown to the axial direction of the valve rod 2; the pressure of the airflow port 10 is greater than or equal to the pressure of the fluid inside the valve body 1, because the valve rod 2 continuously goes up and down on the vertical sealing plate 9, liquid can be brought to the upper part of the sealing plate 9, the pressure inside the valve body 1 is high, when the sealing between the valve rod 2 and the sealing plate 9 is poor or fails, the liquid can enter, the pressure of the airflow port 10 is greater than or equal to the pressure of the liquid inside the valve body 1, and the pressure of the airflow port 10 can avoid the liquid from entering, but it is worth noting that the gas inside the airflow port 10 does not react with the fluid inside the valve body 1.
The working principle is as follows: fluid enters the valve body 1 through the inlet flange 7, directly impacts the cambered surface of the connecting cylinder 5, ascends and descends the valve rod 2, the valve rod 2 enables the valve core 3 and the valve rod 2 to ascend and descend synchronously under the action of the connecting cylinder 5 and the fastening nut 6, and the flow of the fluid is controlled by changing the throttling area of the valve core 3.
It should be noted that, in the present invention, "upper, lower, left and right" are defined based on the relative position of the components in the drawings, and are only for the clarity and convenience of the description of the technical solution, it should be understood that the application of the directional terms does not limit the protection scope of the present application.
Further optimizing the present invention, the above-mentioned embodiments are preferred embodiments, and are not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that modifications may be made to the above-mentioned embodiments, or equivalent replacements may be made to some technical characteristics of the above-mentioned embodiments, and any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present invention are all included in the scope of the present invention.
Claims (6)
1. A flow control valve characterized by: comprises a valve body; the valve body comprises a valve rod, a valve core, a connecting cylinder and a fastening nut; the top of the valve core is integrally provided with a joint; the bottom of the valve rod is provided with threads; one end of the connecting cylinder is in interference fit connection with the joint, and the other end of the connecting cylinder is in threaded connection with the bottom of the valve rod; fastening nuts are arranged at two ends of the connecting cylinder; and the fastening nut is fixedly welded after being in threaded connection with the valve rod and the valve core.
2. A flow control valve according to claim 1, wherein: the screw thread turning direction of the valve rod connected with the connecting cylinder is different from the screw thread turning direction of the valve rod connected with the fastening nut.
3. A flow control valve according to claim 1, wherein: the outer surface of the connecting cylinder is smoothly curved in the axial direction thereof.
4. A flow control valve according to claim 1, wherein: the inlet of the valve body is connected with an inlet pipeline through an inlet flange; the outlet of the valve body is connected with an outlet pipeline through an outlet flange; and the inlet flange and the outlet flange are both provided with gaskets.
5. A flow control valve according to claim 1, wherein: a sealing plate is arranged at the top of the valve rod; the sealing plate is fixed on the inner surface of the valve body; the valve stem passes through the seal plate.
6. A flow control valve according to claim 5, wherein: the top of the valve body is provided with an airflow port; the airflow port is positioned above the sealing plate; the air flow openings are uniformly distributed in the circumferential direction of the top of the valve body; the pressure of the airflow port is greater than or equal to the pressure of the fluid inside the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020052262.3U CN211599548U (en) | 2020-01-10 | 2020-01-10 | Flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020052262.3U CN211599548U (en) | 2020-01-10 | 2020-01-10 | Flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211599548U true CN211599548U (en) | 2020-09-29 |
Family
ID=72577934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020052262.3U Expired - Fee Related CN211599548U (en) | 2020-01-10 | 2020-01-10 | Flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211599548U (en) |
-
2020
- 2020-01-10 CN CN202020052262.3U patent/CN211599548U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200929 Termination date: 20220110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |