CN219159685U - Improved flow regulating valve - Google Patents
Improved flow regulating valve Download PDFInfo
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- CN219159685U CN219159685U CN202223032772.2U CN202223032772U CN219159685U CN 219159685 U CN219159685 U CN 219159685U CN 202223032772 U CN202223032772 U CN 202223032772U CN 219159685 U CN219159685 U CN 219159685U
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Abstract
The utility model discloses an improved flow regulating valve, which comprises a valve body, a valve core rod and a fixed cap; the valve body is provided with a water inlet pipe, a valve core mounting seat and a water outlet pipe, a stop tooth is arranged on the valve core rod above the first external thread, a stop groove is formed between two adjacent stop teeth, and the stop tooth and the stop groove are parallel to the axis of the valve core rod; the distance between the outer edge of the stop tooth and the axis is smaller than the minor diameter of the first external thread; the middle part of the fixing cap is provided with a through hole, the inner diameter of the through hole is smaller than the small diameter of the first external thread, and the through hole is sleeved on the outer side of the stop groove; the fixing cap is provided with an elastic propping piece which is embedded into the stop groove. Compared with the prior art, the valve core rod is not easy to open in an uncontrolled manner due to the fact that the elastic propping piece has an obstacle effect on passive rotation of the valve core rod in an opening direction caused by thread abrasion under water pressure fluctuation through the arrangement of the stop teeth, the stop grooves and the elastic propping piece, and stability of water flow passing through the flow regulating valve is guaranteed.
Description
Technical Field
The utility model relates to the technical field of water valves, in particular to an improved flow regulating valve.
Background
The flow regulating valve is one of valves, and one valve core of the flow regulating valve is a regulating valve with the opening degree changed through screw transmission, so that the flow regulating valve has a simple structure, good linearity and can bear higher pressure. In addition, the manual operation is very simple and is used on not less pipelines. The existing flow regulating valve is shown in fig. 1, and comprises a valve body 1, a valve core rod 2, a sealing gasket 4 and a fixing cap 3, wherein the valve body 1 is provided with a water inlet pipe 11 and a water outlet pipe 12, a valve core rod 2 is in threaded connection in an inner cavity of the valve body 1, the distance between a rubber pad 27 at the lower end of the valve core rod 2 and a water passing hole 132 is regulated by rotating the valve core rod 2, so that the flow is realized, and the fixing cap 3 is arranged at the upper end of the valve body 1 to limit the axial position of the valve core rod 2. But the existing flow regulating valve has the following disadvantages: after the threads of the valve core rod 2 are worn, the valve core rod can be slowly opened upwards along with the fluctuation of water pressure, so that the flow rate is increased uncontrollably.
In view of the above, the present inventors have made intensive studies to solve the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The utility model mainly aims to provide an improved flow regulating valve, which solves the problem that a valve core rod in the background art is easy to automatically open along with water pressure fluctuation after screw threads are worn, and improves the stability of flow when the flow regulating valve is used.
In order to achieve the above object, the solution of the present utility model is:
an improved flow regulating valve comprises a valve body, a valve core rod and a fixed cap; the valve body is provided with a water inlet pipe, a valve core mounting seat and a water outlet pipe, the water inlet pipe and the water outlet pipe are integrally connected with the valve core mounting seat, a valve core mounting cavity is formed in the valve core mounting seat, a water passing hole communicated with the water inlet pipe is formed at the bottom of the valve core mounting cavity, and the valve core mounting cavity is communicated with the water outlet pipe; the upper part of the inner side wall of the valve core mounting cavity is provided with a first internal thread, the middle part of the valve core rod is provided with a first external thread, and the first external thread is connected with the first internal thread; a sealing structure is arranged between the valve core rod and the inner wall of the valve core mounting cavity; a plurality of stop teeth which are annularly arranged at intervals around the axis of the valve core rod are arranged on the valve core rod above the first external thread, stop grooves are formed between two adjacent stop teeth, and the length direction of each stop tooth and each stop groove is parallel to the axis of the valve core rod; the distance between the outer edge of the stop tooth and the axis is smaller than half of the minor diameter of the first external thread; the fixed cap is fixedly connected to the upper end of the valve core mounting seat, a through hole is formed in the middle of the fixed cap, the inner diameter of the through hole is smaller than the small diameter of the first external thread, and the through hole is sleeved on the outer side of the stop groove; the fixing cap is provided with an elastic propping piece, and the elastic propping piece is embedded into the stop groove.
Further, the sealing structure comprises a sealing ring arranged on the valve core rod below the first external thread, and the sealing ring is in sealing connection with the inner side wall of the valve core mounting cavity.
Further, two annular grooves are arranged on the valve core rod below the first external thread at intervals, and a sealing ring is arranged in each annular groove.
Further, a clamping column is formed in the middle of the lower end of the valve core rod, and a rubber pad is arranged on the clamping column in a clamping mode; the water passing holes are conical holes, and the large ends of the conical holes face the rubber pad.
Further, a second external thread is arranged on the upper part of the outer wall of the valve element mounting seat, and a second internal thread connected with the second external thread is formed on the fixing cap; the first internal thread and the second external thread have opposite spiral directions.
Further, the first external thread and the first internal thread are right-handed threads, and the second external thread and the second internal thread are left-handed threads.
Further, the elastic propping piece comprises a propping core and a spring, a mounting hole is formed in the fixing cap in the radial direction, the mounting hole is communicated with the through hole, the propping core is slidably arranged in the mounting hole, the spring is located in the mounting hole and propped against the tail of the propping core, and the head of the propping core can be propped against and embedded into the stop groove.
Further, the head of the propping core is provided with a conical part, and the tip of the conical part is provided with an arc-shaped surface.
Further, the elastic propping piece comprises an elastic rod and a propping head, the elastic rod is integrally formed on the fixing cap, cutting seams are formed on two sides of the elastic rod, and the root of the elastic rod is integrally connected with the fixing cap; the propping head is integrally connected to the free end of the elastic rod, when the elastic rod is in a free state, the distance between the propping head and the axis of the fixing cap is smaller than the radius of the inner cavity of the through hole, and the propping head can be propped and embedded into the stop groove.
Further, two elastic rods are arranged on the fixing cap, and the two elastic rods are centrally symmetrical relative to the axis of the fixing cap.
After the structure is adopted, the improved flow regulating valve has at least the following beneficial effects:
1. when the valve core rod is driven by the artificial external force to regulate the flow, the valve core rod is driven by the artificial external force to rotate, and the external thread on the valve core rod is connected with the first internal thread in the valve core mounting cavity, so that the valve core rod can move along the axial direction after rotating, the distance between the lower end of the valve core rod and the water passing hole is changed, and the flow regulation is realized.
During normal use, the spool rod has a tendency to rotate and move upward due to thread wear and water pressure fluctuations. At this time, the elastic propping piece is embedded into one of the stop grooves, so that the elastic propping piece plays a certain role in blocking the rotation of the valve core rod, and the influence on the valve core rod caused by water pressure fluctuation is insufficient to overcome the resistance of the elastic propping piece on the valve core rod, so that the passive rotation and the lifting of the valve core rod are limited. The force of the artificial external force rotary valve core rod is larger, the resistance of the elastic propping piece to the valve core rod can be overcome, and the elastic propping piece can not influence the rotary valve core rod of a user to regulate the flow.
2. The sealing ring is arranged below the first external thread, so that the first external thread of the valve core rod is not soaked in water, and further corrosion and abrasion of the thread are avoided; the sealing ring is arranged in such a way, a sealing gasket is not required to be arranged between the fixing cap and the upper end of the valve core mounting seat, and the stop teeth, the stop grooves and the elastic propping piece are conveniently arranged. Furthermore, the double sealing rings are used for sealing, so that a better sealing effect is achieved.
3. The water passing hole is sealed with the conical hole by a rubber pad instead of the traditional water wave seal, so that the sealing strength is enhanced, and the water passing hole can withstand higher pressure.
4. The first internal thread is opposite to the first external thread, so that the force with a tendency to unscrew the valve core rod is formed under the action of water pressure fluctuation, and after the force is resisted by the elastic propping piece on the fixing cap, a reaction force is formed on the fixing cap, and the reaction force acts on the fixing cap to enable the fixing cap to be screwed on the valve core mounting seat. The fixing cap can be more firmly fixed on the valve core mounting seat without being unscrewed and unscrewed along with the valve core rod. Specifically, the first external thread and the first internal thread are right-handed threads, and the second external thread and the second internal thread are left-handed threads.
5. The elastic propping piece provides two embodiments, namely, the propping core can be used for propping the stop groove under the action of the spring. The stop groove can be propped by the elastic rod driving propping head.
Compared with the prior art, the valve core rod is not easy to open in an uncontrolled manner due to the fact that the elastic propping piece has an obstacle effect on passive rotation of the valve core rod in an opening direction caused by thread abrasion under water pressure fluctuation through the arrangement of the stop teeth, the stop grooves and the elastic propping piece, and stability of water flow passing through the flow regulating valve is guaranteed.
Drawings
Fig. 1 is a schematic cross-sectional view of a conventional flow control valve.
Fig. 2 is a schematic cross-sectional view of an improved flow control valve according to the present utility model.
Fig. 3 is a schematic cross-sectional view of the valve body.
Fig. 4 is a schematic cross-sectional view of the valve core rod.
Fig. 5 is a schematic cross-sectional view of the cap (hidden elastic abutment).
Fig. 6 is a schematic structural view of the elastic propping member according to the first embodiment for propping the stop groove on the valve core rod.
Fig. 7 is a schematic structural view of an elastic propping member for propping a stop groove on a valve core rod according to a second embodiment.
In the figure:
a valve body 1; a water inlet pipe 11; a water outlet pipe 12; a valve element mounting seat 13; a spool mounting cavity 131; a water passing hole 132; a first internal thread 133; a second external thread 134; a valve core rod 2; a first external thread 21; a stop tooth 22; a stopper groove 23; a seal ring 24; an annular groove 25; a clamping post 26; a rubber pad 27; a fixing cap 3; a through hole 31; a second internal thread 32; a pressing core 331; a spring 332; a mounting hole 333; an elastic rod 341; a abutment 342; cutting the slit 343; and a gasket 4.
Detailed Description
In order to further explain the technical scheme of the utility model, the utility model is explained in detail by specific examples.
As shown in fig. 2 to 7, the present utility model relates to an improved flow rate regulating valve, which comprises a valve body 1, a valve core rod 2 and a fixing cap 3; the valve body 1 is provided with a water inlet pipe 11, a valve core mounting seat 13 and a water outlet pipe 12, the water inlet pipe 11 and the water outlet pipe 12 are integrally connected with the valve core mounting seat 13, a valve core mounting cavity 131 is formed in the valve core mounting seat 13, a water passing hole 132 communicated with the water inlet pipe 11 is formed at the bottom of the valve core mounting cavity 131, and the valve core mounting cavity 131 is communicated with the water outlet pipe 12; a first internal thread 133 is formed at the upper part of the inner side wall of the valve core mounting cavity 131, a first external thread 21 is formed at the middle part of the valve core rod 2, and the first external thread 21 is connected with the first internal thread 133; a sealing structure is arranged between the valve core rod 2 and the inner wall of the valve core mounting cavity 131; a plurality of stop teeth 22 which are annularly arranged at intervals around the axis of the valve core rod 2 are arranged on the valve core rod 2 above the first external thread 21, a stop groove 23 is formed between two adjacent stop teeth 22, and the length direction of each stop tooth 22 and the stop groove 23 is parallel to the axis of the valve core rod 2; the distance between the outer edge of the stop tooth 22 and the axis is less than half the minor diameter of the first external thread 21 (i.e., the outer edge of the stop tooth 22 is closer to the axis of the valve stem than the first external thread 21); the fixed cap 3 is fixedly connected to the upper end of the valve core mounting seat 13, a through hole 31 is formed in the middle of the fixed cap 3, the inner diameter of the through hole 31 is smaller than the small diameter of the first external thread 21 (the fixed cap 3 can limit the maximum displacement position of the valve core rod 2 upwards), and the through hole 31 is sleeved outside the stop groove 23; the fixing cap 3 is provided with an elastic abutment member which is inserted into the stop groove 23.
Thus, in the improved flow control valve according to the present utility model, when the valve core rod 2 is required to be rotated to control the flow, the valve core rod 2 is driven to rotate by an artificial external force, and since the external thread on the valve core rod 2 is connected with the first internal thread 133 in the valve core mounting cavity 131, the valve core rod 2 moves in the axial direction after rotating, thereby changing the distance between the lower end of the valve core rod 2 and the water passing hole 132 to achieve flow control, and when the valve core rod 2 is driven to rotate by an artificial external force, the stop teeth 22 and the stop grooves 23 which are annularly spaced on the valve core rod 2 rotate together with the valve core rod 2, so that the elastic abutment member relatively slides along the surfaces of the stop grooves 23 and the stop teeth 22 around the axis of the valve core rod 2, and the elastic abutment member sequentially abuts against the stop grooves 23 until the valve core rod 2 stops rotating, and the elastic abutment member abuts against the side walls of the two stop teeth 22 adjacent to the stop grooves 23.
In the normal use phase, the spool rod 2 has a tendency to rotate and move upward due to thread wear and water pressure fluctuation effects. At this time, since the elastic propping piece is embedded into one of the stop grooves 23, the elastic propping piece plays a certain role in blocking the rotation of the valve core rod 2, and the influence on the valve core rod 2 caused by the fluctuation of the water pressure is insufficient to overcome the resistance of the elastic propping piece on the valve core rod 2, so that the passive rotation and the lifting of the valve core rod 2 are limited. The force of the artificial external force rotary valve core rod 2 is larger, the resistance of the elastic propping piece to the valve core rod 2 can be overcome, and the elastic propping piece can not influence the user to carry out flow regulation on the rotary valve core rod 2. The included angle formed by the two side walls of the stop groove 23 is an obtuse angle, so that the elastic propping piece can sequentially pass through the stop tooth 22 to prop against the stop groove 23 when the valve core rod is manually driven.
Preferably, the sealing structure comprises a sealing ring 24 arranged on the valve core rod 2 below the first external thread 21, and the sealing ring 24 is in sealing connection with the inner side wall of the valve core mounting cavity 131. The sealing ring 24 is arranged below the first external thread 21, so that the first external thread 21 of the valve core rod 2 is not soaked in water, and further the corrosion and abrasion of threads are avoided; the sealing ring 24 is arranged in such a way, and the sealing gasket 4 is not required to be arranged between the fixing cap 3 and the upper end of the valve element mounting seat 13, so that the stop teeth 22, the stop groove 23 and the elastic abutting piece are conveniently arranged. Further, two annular grooves 25 are arranged on the valve core rod 2 below the first external thread 21 at intervals, and a sealing ring 24 is installed in each annular groove 25. The double seal ring 24 seals the sealing device, so that a better sealing effect is achieved.
Preferably, a clamping column 26 is formed in the middle of the lower end of the valve core rod 2, and a rubber pad 27 is clamped and installed on the clamping column 26; the water passing hole 132 is a tapered hole, and the large end of the tapered hole faces the rubber pad 27. The water passing hole 132 is changed from the traditional water wave seal (shown in fig. 1) to the rubber pad 27 and the taper hole seal (shown in fig. 2), so that the sealing strength is enhanced, and the higher pressure can be resisted.
Preferably, a second external thread 134 is provided on the upper portion of the outer wall of the valve core mounting seat 13, and a second internal thread 32 connected to the second external thread 134 is formed on the fixing cap 3; the first internal thread 133 is threaded in the opposite direction to the second external thread 134. That is, if the first external thread 21 and the first internal thread 133 are right-handed, the second external thread 134 and the second internal thread 32 are left-handed; if the first external thread 21 and the first internal thread 133 are left-handed, the second external thread 134 and the second internal thread 32 are right-handed.
The first internal thread 133 is opposite to the thread of the first external thread 21, so that the force on the valve core rod 2, which is formed by the fluctuation of the water pressure, has a tendency to unscrew, and after being resisted by the elastic abutment on the fixing cap 3, a reaction force is formed on the fixing cap 3, which reaction force acts on the fixing cap 3 so that the fixing cap 3 tends to screw up on the valve core mounting seat 13. So that the fixing cap 3 can be more firmly fixed to the valve core mounting seat 13 without unscrewing and unscrewing along with the valve core rod 2. In a preferred embodiment, the first external thread 21 and the first internal thread 133 are right-handed threads, and the second external thread 134 and the second internal thread 32 are left-handed threads.
The resilient abutment provides two embodiments, namely, the abutment core 331 abuts the stop groove 23 under the action of the spring 332. The stopper groove 23 may be abutted by the abutment 342 driven by the elastic rod 341.
As shown in fig. 6, the elastic propping member is a first embodiment, and the elastic propping member includes a propping core 331 and a spring 332, a mounting hole 333 is radially disposed in the fixing cap 3, the mounting hole 333 communicates with the through hole 31, the propping core 331 is slidably disposed in the mounting hole 333, the spring 332 is located in the mounting hole 333 and is propped against the tail of the propping core 331, and the head of the propping core 331 can be propped against and embedded in the stop groove 23. Preferably, the head of the abutment core 331 has a tapered portion, and the tip of the tapered portion has an arcuate surface. Thus, when the valve core rod 2 is rotated by an artificial external force, the head of the propping core 331 slides more smoothly from the bottom of the stop groove 23 to the outer tip of the adjacent stop tooth 22.
As shown in fig. 7, a second embodiment of the elastic abutment member: the elastic propping piece comprises an elastic rod 341 integrally formed on the fixed cap 3 and a propping head 342 formed on the elastic rod 341, cutting slits 343 are formed on two sides of the elastic rod 341, and the root of the elastic rod 341 is integrally connected with the fixed cap 3; the abutment 342 is integrally connected to the free end of the elastic rod 341, when the elastic rod 341 is in a free state, the distance between the abutment 342 and the axis of the fixing cap 3 is smaller than the radius of the inner cavity of the through hole 31 (i.e., the abutment 342 is closer to the central axis of the fixing cap 3 than the inner side wall of the through hole 31), and the abutment 342 can be abutted and embedded into the stop groove 23. The elastic rod 341 has an elastic force to drive the abutment 342 against the stopper tooth 22 by providing the cut slit 343.
Preferably, the fixing cap 3 is provided with two elastic rods 341, and the two elastic rods 341 are centrally symmetrical about the axis of the fixing cap 3. By symmetrically arranging two groups of elastic propping pieces, the elastic propping pieces can better block the passive movement of the valve core rod 2 caused by water pressure fluctuation.
Compared with the prior art, the valve core rod 2 is not easy to open in an uncontrolled manner due to the fact that the stop teeth 22, the stop grooves 23 and the elastic propping piece are arranged, so that the elastic propping piece has an obstacle effect on passive rotation of the valve core rod 2 in an opening direction caused by thread abrasion under water pressure fluctuation, and stability of water flow passing through the flow regulating valve is guaranteed.
The above examples and drawings are not intended to limit the form or form of the present utility model, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.
Claims (10)
1. An improved flow regulating valve is characterized by comprising a valve body, a valve core rod and a fixed cap; the valve body is provided with a water inlet pipe, a valve core mounting seat and a water outlet pipe, the water inlet pipe and the water outlet pipe are integrally connected with the valve core mounting seat, a valve core mounting cavity is formed in the valve core mounting seat, a water passing hole communicated with the water inlet pipe is formed at the bottom of the valve core mounting cavity, and the valve core mounting cavity is communicated with the water outlet pipe; the upper part of the inner side wall of the valve core mounting cavity is provided with a first internal thread, the middle part of the valve core rod is provided with a first external thread, and the first external thread is connected with the first internal thread; a sealing structure is arranged between the valve core rod and the inner wall of the valve core mounting cavity; a plurality of stop teeth which are annularly arranged at intervals around the axis of the valve core rod are arranged on the valve core rod above the first external thread, stop grooves are formed between two adjacent stop teeth, and the length direction of each stop tooth and each stop groove is parallel to the axis of the valve core rod; the distance between the outer edge of the stop tooth and the axis is smaller than half of the minor diameter of the first external thread; the fixed cap is fixedly connected to the upper end of the valve core mounting seat, a through hole is formed in the middle of the fixed cap, the inner diameter of the through hole is smaller than the small diameter of the first external thread, and the through hole is sleeved on the outer side of the stop groove; the fixing cap is provided with an elastic propping piece, and the elastic propping piece is embedded into the stop groove.
2. The improved flow regulator valve of claim 1, wherein said sealing structure comprises a sealing ring disposed on said spool rod below said first external thread, said sealing ring being sealingly connected to said inner sidewall of said spool mounting cavity.
3. An improved flow regulator valve as defined in claim 2, wherein two annular grooves are provided in spaced relation on the stem below said first external thread, each annular groove having a sealing ring mounted therein.
4. The improved flow regulating valve as claimed in claim 1, wherein a clamping column is formed in the middle of the lower end of the valve core rod, and a rubber pad is clamped and installed on the clamping column; the water passing holes are conical holes, and the large ends of the conical holes face the rubber pad.
5. The improved flow regulating valve as claimed in claim 1, wherein the valve core mounting seat has a second external thread formed on an upper portion of an outer wall thereof, and the fixing cap has a second internal thread formed thereon to be connected with the second external thread; the first internal thread and the second external thread have opposite spiral directions.
6. An improved flow regulator valve as defined in claim 5, wherein said first external thread and first internal thread are right-handed threads and said second external thread and second internal thread are left-handed threads.
7. An improved flow regulator valve according to any one of claims 1-6, wherein said resilient abutment member comprises an abutment core and a spring, said retaining cap having a mounting bore radially disposed therein, said mounting bore communicating with said through bore, said abutment core slidably disposed within said mounting bore, said spring being disposed within said mounting bore and abutting against a rear portion of said abutment core, a head portion of said abutment core being capable of abutting against and being embedded in said retaining groove.
8. An improved flow regulator valve according to claim 7, wherein the head of said abutment core has a tapered portion, the tip of said tapered portion having an arcuate surface.
9. An improved flow regulating valve as claimed in any one of claims 1 to 6, wherein said elastic abutment member comprises an elastic rod integrally formed on said fixing cap and an abutment head formed on said elastic rod, said elastic rod being formed with cutting slits on both sides thereof, and the root of said elastic rod being integrally connected with said fixing cap; the propping head is integrally connected to the free end of the elastic rod, when the elastic rod is in a free state, the distance between the propping head and the axis of the fixing cap is smaller than the radius of the inner cavity of the through hole, and the propping head can be propped and embedded into the stop groove.
10. An improved flow regulator valve according to claim 9, wherein said cap is provided with two resilient bars which are centrally symmetrical about the axis of the cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223032772.2U CN219159685U (en) | 2022-11-14 | 2022-11-14 | Improved flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223032772.2U CN219159685U (en) | 2022-11-14 | 2022-11-14 | Improved flow regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN219159685U true CN219159685U (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223032772.2U Active CN219159685U (en) | 2022-11-14 | 2022-11-14 | Improved flow regulating valve |
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| CN (1) | CN219159685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989147A (en) * | 2023-09-28 | 2023-11-03 | 科讯工业制造(深圳)有限公司 | Precise flow regulating valve and assembling method thereof |
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2022
- 2022-11-14 CN CN202223032772.2U patent/CN219159685U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989147A (en) * | 2023-09-28 | 2023-11-03 | 科讯工业制造(深圳)有限公司 | Precise flow regulating valve and assembling method thereof |
| CN116989147B (en) * | 2023-09-28 | 2023-12-01 | 科讯工业制造(深圳)有限公司 | Precise flow regulating valve and assembling method thereof |
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