CN109630729B - Constant flow valve - Google Patents
Constant flow valve Download PDFInfo
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- CN109630729B CN109630729B CN201910047495.6A CN201910047495A CN109630729B CN 109630729 B CN109630729 B CN 109630729B CN 201910047495 A CN201910047495 A CN 201910047495A CN 109630729 B CN109630729 B CN 109630729B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 description 16
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a constant flow valve, and belongs to the technical field of valves. The constant-flow valve solves the problem of low applicability of the existing constant-flow valve. The valve body is internally provided with an upper cavity and a lower cavity which are communicated, the lower cavity is communicated with the water outlet end, a channel is arranged in the valve body, the middle part of the channel is communicated with the water inlet end, a valve rod is arranged in the channel, the upper end of the valve rod stretches into the upper cavity, the upper end of the valve rod is sealed with the upper part of the channel, the lower end of the valve rod stretches into the lower cavity, when the valve rod moves upwards, the lower end of the valve rod can seal a lower port of the channel, a spring which acts downwards on the valve rod is arranged in the upper cavity, the lower end of the valve body is internally connected with a control rod which can move upwards and downwards in a threaded manner, the control rod is positioned below the valve rod, the lower end of the control rod stretches out of the valve body, the control rod can be pushed to move upwards and seal the lower port of the channel when the control rod moves downwards to the lowest position, and a gap is formed between the upper end surface of the control rod and the lower end surface of the valve rod. It has the advantages of simple operation, wide applicability, etc.
Description
Technical Field
The invention belongs to the technical field of valves, and relates to a constant flow valve.
Background
The constant flow valve is a regulating valve with constant flow function, and is essentially a self-operated differential pressure control device. The valve has the working principle that the inlet pressure is reduced to a certain required outlet pressure, the outlet pressure is automatically kept stable by means of the energy of a medium, and from the viewpoint of hydrodynamics, the valve is essentially a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area, so that the aim of reducing pressure is achieved differently, and then the fluctuation of the pressure behind the valve is balanced with the spring force by means of the adjustment of a control and regulating system, so that the pressure behind the valve is kept constant within a certain error range.
At present, a conventional constant flow valve or pressure reducing valve only has a function of adjusting the pressure before and after the valve, for example, a cleanable piston type pressure reducing valve disclosed in application No. 201721337786.1, a cleanable piston type pressure reducing valve disclosed in application No. 201020153923.8, a pressure reducing valve disclosed in application No. 2015144286. X, and the like, and a user cannot operate the constant flow valve or the pressure reducing valve to actively cut off a waterway like a conventional main valve such as a ball valve, a gate valve, a stop valve, and the like, so that the constant flow valve or the pressure reducing valve can only be used as an auxiliary throttling element in a pipeline, and has a problem of low applicability.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art, and provides a constant flow valve, so that the technical problem to be solved is how to improve the applicability.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a constant flow valve, includes the valve body that both ends are water inlet and water outlet respectively about, the valve body in have the last cavity and the lower cavity that are linked together, lower cavity and water outlet intercommunication are equipped with the passageway along vertical direction in the valve body, passageway middle part and water inlet intercommunication are equipped with the valve rod that can reciprocate in the passageway, the valve rod upper end stretches into in the cavity and valve rod upper end and passageway upper portion are sealed, the valve rod lower extreme stretches into in the lower cavity and when the valve rod moves up the valve rod lower extreme can seal passageway lower port, be equipped with in the cavity of going up and can promote the valve rod and move down and open the spring of passageway lower port, its characterized in that, valve body lower extreme internal thread have the control rod, the control rod is located the valve rod below, the control rod lower extreme stretches out the valve body, the control rod can make the control rod reciprocate, can promote the valve rod and move up and seal down the passageway when the control rod moves down to the minimum position, the control rod up end forms the clearance with the valve rod lower terminal surface.
The constant flow valve is characterized in that the lower end of the control rod is connected with the control rod through internal threads at the lower end of the valve body, the lower end of the control rod extends out of the valve body and is used for being operated by a user, and therefore the control rod can move up and down relative to the valve body through threads when the user rotates the control rod. Because the control rod is positioned below the valve rod, when the control rod is rotated to enable the control rod to move upwards, the upper end face of the control rod is propped against the lower end face of the valve rod so as to push the valve rod to move upwards to seal the lower port of the channel, and thus the whole waterway is cut off, which is equivalent to that a user can close the constant flow valve like operating a conventional main valve; when the control rod is rotated to enable the control rod to move downwards to the lowest position, a gap is formed between the upper end face of the control rod and the lower end face of the valve rod, the valve rod moves downwards under the action of a spring to enable the lower port of the channel to be opened, and therefore the whole waterway is opened and can work like a common constant flow valve after the waterway is opened. Compared with the prior art that the constant flow valve is only used as an auxiliary valve, the constant flow valve has the functions of the main valve and the existing constant flow valve, is wider in applicability, and well reduces the volume and the space occupation rate while realizing the same function.
In the constant flow valve, the valve body comprises a cross-shaped body, the lower end of the body is opened, the inner thread of the lower port of the body is connected with a bottom cover, the lower end of the bottom cover is provided with a columnar connecting part, the control rod comprises a rod part and a head part with the outer diameter larger than that of the rod part, the rod part is arranged in the columnar connecting part in a penetrating mode, a concave cavity is formed in the upper end of the columnar connecting part, and the head part is connected in the concave cavity in a threaded mode.
The bottom cover is provided with the columnar connecting part at the lower end, the control rod is arranged to comprise a rod part and a head part with the outer diameter larger than that of the rod part, the rod part of the control rod is arranged in the columnar connecting part in a penetrating way to support, and meanwhile, the head part is connected in a concave cavity at the upper end of the columnar connecting part in a threaded way, so that the control rod can move up and down relative to the valve body to be matched with the valve rod when the control rod is rotated, and the constant-current valve can integrate the functions of the constant-current valve and the main valve simultaneously.
In the constant flow valve, the length of the threaded connection between the control rod and the concave cavity is larger than the maximum distance of downward movement of the valve rod.
The threaded connection length of the control rod and the concave cavity is larger than the maximum distance of the downward movement of the valve rod, so that when the control rod is rotated to enable the control rod to move upwards, the valve rod can be pushed to move upwards to seal the lower port of the channel; when the control rod is rotated to enable the control rod to move downwards to the lowest position, a gap is formed between the upper end face of the control rod and the lower end face of the valve rod, so that the valve rod opens the lower port of the channel, and the valve rod can only be subjected to water pressure change to adjust the opening of the lower port of the channel.
In the constant flow valve, the control rod and the valve rod are coaxially arranged, and the area of the upper end face of the head part is larger than that of the lower end face of the valve rod.
The control rod and the valve rod are coaxially arranged, the area of the upper end face of the head is larger than that of the lower end face of the valve rod, and therefore the control rod can better contact with the valve rod when moving upwards to push the valve rod to move upwards and close the lower port of the channel, and reliability of the constant-current valve with the main valve function is guaranteed.
In the constant flow valve, the valve rod sequentially comprises a valve plate, a sliding head and a rod body from top to bottom, the valve plate is positioned in the upper cavity and divides the upper cavity into upper and lower parts, the sliding head is arranged in an upper port of the channel in a sliding manner, a sealing ring is arranged on the outer side of the sliding head, the outer diameter of the rod body is smaller than the inner diameter of the channel, and a sealing gasket is fixed at the lower end of the rod body.
The sliding head is arranged in the upper port of the channel, and the sealing ring is arranged on the outer side of the sliding head, so that water can only flow out from the lower port of the channel when flowing into the channel through the water inlet end, and the valve plate separates the upper cavity into the upper cavity and the lower cavity, so that the water can act on the valve plate when flowing into the lower cavity from the lower cavity, and the water pressure of the water inlet is increased, so that the valve plate can be acted on the valve plate to push the valve plate to move upwards to adjust the opening of the lower port of the channel, and the constant flow effect is realized.
In the constant flow valve, the water outlet end of the valve body is connected with a rotatable connecting pipe, the connecting pipe and the water outlet end are axially limited, a cylindrical support is fixed in the connecting pipe, one end of the cylindrical support close to the water outlet end is opened, a plurality of positioning windows are circumferentially arranged in the middle of the cylindrical support in a penetrating mode, filter screens are fixed in the positioning windows, a water outlet gap is formed between the outer side wall of the middle of the cylindrical support and the inner wall of the connecting pipe, and a connecting end communicated with the water outlet gap is arranged on the side portion of the connecting pipe.
The cylindrical support is fixed in the connecting pipe, one end of the cylindrical support, which is close to the water outlet end, is provided with an opening, a filter screen is fixed in each positioning window at the outer side of the middle part of the cylindrical support, water can enter the cylindrical support when flowing into the connecting pipe through the water outlet end, and flows into a water outlet gap between the outer side wall of the middle part of the cylindrical support and the inner wall of the connecting pipe after being filtered by the filter screen, and finally is outwards supplied through the connecting end. Through the barrel-shaped bracket with the filter screen fixed in the connecting pipe, the constant flow valve integrates the filter function while having the functions of the main valve and the constant flow valve, has more various functions, and further improves the applicability.
In the constant flow valve, the outer end of the connecting pipe is opened, the inner thread of the outer end of the connecting pipe is connected with the plugging cap, the outer end face of the plugging cap is provided with the straight-line groove, one end of the cylindrical support, which is far away from the water outlet end, is connected with the inner side of the plugging cap in a threaded manner, the outer side of one end of the cylindrical support, which is close to the water outlet end, is provided with the annular convex part, and the outer side of the annular convex part is provided with the O-shaped ring.
The inner thread of the outer end of the connecting pipe is connected with the plugging cap, the outer end face of the plugging cap is provided with a straight-line groove, one end of the cylindrical support, which is far away from the water outlet end, is in threaded connection with the inner side of the plugging cap, and convenience is provided for cleaning and replacement of the filter screen.
Compared with the prior art, the constant flow valve is internally connected with the control rod capable of moving up and down by the threads at the lower end, the constant flow valve can be actively closed or opened by a user by using the control rod, and the constant flow valve can work like the existing constant flow valve when the user actively opens the constant flow valve, so that the constant flow valve has the functions of the main valve and the existing constant flow valve, and the applicability is improved.
In addition, connect the takeover at the play water end, the takeover can realize the loose joint function of this constant current valve, sets up the cylindric support of taking the filter screen in the takeover simultaneously again and makes this constant current valve possess filtering capability, and the function is richer, has further improved the suitability of this constant current valve.
Drawings
Fig. 1 is a cross-sectional view of the present constant flow valve.
Fig. 2 is an enlarged sectional view of the constant flow valve between the upper end of the control rod and the lower end of the valve rod.
In the figure, 1, a valve body; 1a, a water inlet end; 1b, a water outlet end; 1c, an upper cavity; 1d, lower cavity; 1e, a channel; 2. a valve stem; 2a, a rod body; 2b, a sliding head; 2c, a valve plate; 2c1, positioning heads; 3. a spring; 4. a control lever; 4a, a rod part; 4b, a head; 5. a body; 6. a bottom cover; 6a, columnar connecting parts; 7. a seal ring; 8. a sealing gasket; 9. connecting pipe; 9a, a connecting end; 10. a cylindrical holder; 10a, positioning a window; 11. a water outlet gap; 12. a blocking cap; 13. an O-ring; 14. a top cover; 15. a hand wheel; 16. an annular press cap.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a constant flow valve comprises a valve body 1, wherein the left end and the right end of the valve body are respectively provided with a water inlet end 1a and a water outlet end 1b, an upper cavity 1c and a lower cavity 1d which are communicated are arranged in the valve body 1, the lower cavity 1d is communicated with the water outlet end 1b, a channel 1e is arranged in the valve body 1 along the vertical direction, and the middle part of the channel 1e is laterally communicated with the water inlet end 1 a. The valve rod 2 capable of moving up and down is arranged in the channel 1e, the upper end of the valve rod 2 stretches into the upper cavity 1c, the outer wall of the upper end of the valve rod 2 is sealed with the inner wall of the upper part of the channel 1e, the lower end of the valve rod 2 stretches into the lower cavity 1d, when the valve rod 2 moves up, the lower end of the valve rod 2 can seal the lower port of the channel 1e, and the spring 3 capable of pushing the valve rod 2 to move down and opening the lower port of the channel 1e is arranged in the upper cavity 1 c.
As shown in fig. 1, specifically, the valve rod 2 sequentially includes, from top to bottom, a valve plate 2c, a sliding head 2b, and a rod body 2a, where the valve plate 2c is located in the upper cavity 1c, the valve plate 2c separates the upper cavity 1c into an upper portion and a lower portion, and the outer wall of the valve plate 2c is sealed with the inner wall of the upper cavity 1c, the sliding head 2b is slidably disposed in an upper port of the channel 1e, a sealing ring 7 is disposed on the outer side of the sliding head 2b, the outer diameter of the rod body 2a is smaller than the inner diameter of the channel 1e, the lower end of the rod body 2a extends into the lower cavity 1d, and a sealing gasket 8 is fixed at the lower end of the rod body 2 a. The valve body 1 comprises a cross-shaped body 5, a water inlet end 1a, a water outlet end 1b and a channel 1e are all arranged on the body 5, two ends of the body 5 are opened, a top cover 14 is fixed in an upper port of the body 5, a positioning head 2c1 is arranged at the upper end of the valve plate 2c, a spring 3 is sleeved on the positioning head 2c1, the upper end of the spring 3 is propped against the inner wall of the top cover 14, and the lower end of the spring 3 is propped against the upper end face of the valve plate 2 c.
As shown in fig. 1 and 2, a control rod 4 is connected to the lower end of the valve body 1 through internal threads, the control rod 4 is located below the valve rod 2, and the lower end of the control rod 4 extends out of the valve body 1 and is connected with a hand wheel 15. The control rod 4 can be rotated to enable the control rod 4 to move up and down, when the control rod 4 moves up, the valve rod 2 can be pushed to move up, the lower port of the channel 1e is closed, and when the control rod 4 moves down to the lowest position, a gap is formed between the upper end surface of the control rod 4 and the lower end surface of the valve rod 2.
As shown in fig. 1, in this embodiment, a bottom cover 6 is connected to the lower port of the body 5 of the valve body 1 by internal threads, a columnar connection portion 6a is provided at the lower end of the bottom cover 6, the control rod 4 includes a rod portion 4a and a head portion 4b having an outer diameter larger than that of the rod portion 4a, a guide hole is provided at the lower end of the columnar connection portion 6a, the rod portion 4a is inserted into the guide hole, an annular blocking surface is provided at the outer side of the lower end of the rod portion 4a, and the annular blocking surface abuts against the bottom wall of the guide hole. The upper end of the columnar connecting part 6a is provided with a concave cavity which is communicated with the guide hole, the head 4b of the control rod 4 is in threaded connection in the concave cavity, and the threaded connection length of the control rod 4 and the concave cavity is larger than the maximum distance of the downward movement of the valve rod 2. The control rod 4 and the valve rod 2 are coaxially arranged, and the area of the upper end surface of the head 4b is larger than that of the lower end surface of the valve rod 2, namely the lower end surface of the rod body 2 a.
The constant flow valve is characterized in that the control rod 4 is connected with the lower end of the valve body 1 through internal threads, and the lower end of the control rod 4 extends out of the valve body 1 to be used for operation by a user, so that the control rod 4 can move up and down relative to the valve body 1 through threads when the user rotates the control rod 4. Because the control rod 4 is positioned below the valve rod 2, when the control rod 4 is rotated to enable the control rod 4 to move upwards, the upper end face of the control rod 4 is abutted against the lower end face of the valve rod 2 so as to push the valve rod 2 to move upwards to seal the lower port of the channel 1e, and thus the whole waterway is cut off; when the control rod 4 is rotated to enable the control rod 4 to move downwards to the maximum distance, a gap is formed between the upper end face of the control rod 4 and the lower end face of the valve rod 2, the valve rod 2 moves downwards under the action of the spring 3 to enable the lower port of the channel 1e to be opened, the whole waterway is opened, the waterway can work like a common constant-current valve after being opened, when the water pressure of inlet water is increased, the water pressure acts on the valve plate 2c to push the valve rod 2 to move upwards against the elastic force of the spring 3, and accordingly the opening of the lower port of the channel 1e is adjusted to play a role of constant current. Compared with the prior art that the constant flow valve is only used as an auxiliary valve, the constant flow valve has the functions of the main valve and the existing constant flow valve, is wider in applicability, and well reduces the volume and the space occupation rate while realizing the same function.
As shown in fig. 1, the water outlet end 1b of the valve body 1 is connected with a rotatable adapter tube 9, and the adapter tube 9 is axially limited on the water outlet end 1b of the valve body 1. The outside of the water outlet end 1b of the valve body 1 is provided with an annular shoulder, the inner end of the connecting pipe 9 is provided with an annular convex part, the inner end of the connecting pipe 9 is sleeved on the water outlet end 1b of the valve body 1, the water outlet end 1b of the valve body 1 stretches into the annular convex part, the inner thread of the water outlet end 1b of the valve body 1 is connected with an annular pressing cap 16, the lateral part of the outer end of the annular pressing cap 16 is provided with an annular flanging which stretches out of the outer side wall of the water outlet end 1b, and the annular convex part is positioned between the annular shoulder and the annular flanging.
As shown in fig. 1, a cylindrical support 10 is fixed in the connection pipe 9, one end of the cylindrical support 10, which is close to the water outlet end 1b, is opened, a plurality of positioning windows 10a are circumferentially arranged in the middle of the cylindrical support 10 in a penetrating manner, filter screens are fixed in the positioning windows 10a, a water outlet gap 11 is formed between the outer side wall of the middle of the cylindrical support 10 and the inner wall of the connection pipe 9, and a connection end 9a communicated with the water outlet gap 11 is arranged on the side part of the connection pipe 9. The outer end opening of take over 9, take over 9 outer end internal thread connection have stifled cap 12, and the outer terminal surface of stifled cap 12 is equipped with the straight line groove, and the one end threaded connection that tubular support 10 kept away from water outlet end 1b is inboard at stifled cap 12, and the one end outside that tubular support 10 is close to water outlet end 1b is equipped with annular convex part, and the annular convex part outside is equipped with O type circle 13.
When water flows into the connecting pipe 9 through the water outlet end 1b, the water enters the cylindrical support 10, is filtered by the filter screen, flows into the water outlet gap 11 between the outer side wall of the middle part of the cylindrical support 10 and the inner wall of the connecting pipe 9, and finally is outwards supplied through the connecting end 9a. Through the barrel-shaped support 10 with the filter screen fixed in the connecting pipe 9, the constant-current valve integrates the filter function while having the functions of the main valve and the constant-current valve, has more various functions and wider applicability, and simultaneously, the filter screen is replaced and cleaned more conveniently due to the arrangement of the plugging cap 12.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A constant flow valve comprises a valve body (1) with a water inlet end (1 a) and a water outlet end (1 b) at the left end and the right end, wherein an upper cavity (1 c) and a lower cavity (1 d) which are communicated are arranged in the valve body (1), the lower cavity (1 d) is communicated with the water outlet end (1 b), a channel (1 e) is arranged in the valve body (1) along the vertical direction, the middle part of the channel (1 e) is communicated with the water inlet end (1 a), a valve rod (2) capable of moving up and down is arranged in the channel (1 e), the upper end of the valve rod (2) stretches into the upper cavity (1 c) and the upper end of the valve rod (2) is sealed with the upper part of the channel (1 e), the lower end of the valve rod (2) stretches into the lower cavity (1 d) and the lower end of the valve rod (2) can be sealed when the valve rod (2) moves up, a spring (3) capable of pushing the lower end of the channel (1 e) to be opened is arranged in the upper cavity (1 c), the valve rod (4) can be pushed to move up and down, the valve rod (4) can be connected with the upper end of the valve rod (4) to the upper end of the control rod (4) when the valve rod (4) is positioned at the upper end of the control rod (4), when the control rod (4) moves downwards to the lowest position, a gap is formed between the upper end surface of the control rod (4) and the lower end surface of the valve rod (2); the water outlet end (1 b) of the valve body (1) is connected with a connecting pipe (9), a cylindrical support (10) is fixed in the connecting pipe (9), one end of the cylindrical support (10) close to the water outlet end (1 b) is opened, a plurality of positioning windows (10 a) are circumferentially arranged in the middle of the cylindrical support (10) in a penetrating manner, a filter screen is fixed in each positioning window (10 a), a water outlet gap (11) is formed between the outer side wall of the middle of the cylindrical support (10) and the inner wall of the connecting pipe (9), a connecting end (9 a) communicated with the water outlet gap (11) is arranged on the side part of the connecting pipe (9), an annular stop shoulder is arranged on the outer side of the water outlet end (1 b) of the valve body (1), an annular convex part is arranged at the inner end of the connecting pipe (9), the inner end of the connecting pipe (9) is sleeved on the water outlet end (1 b) of the valve body (1) and the water outlet end (1 b) of the valve body (1) extends into the annular convex part, an annular press cap (16) is connected with the inner thread of the water outlet end (1 b) of the valve body (1), an outer side part of the annular press cap (16) is provided with an annular flange (1) extending out of the water outlet end (1 b), the annular flange is arranged between the annular flange (1 b) and the annular flange (9) close to the annular stop end (1) and the annular flange (1), one end of the cylindrical support (10) far away from the water outlet end (1 b) is connected with the inner side of the plugging cap (12) in a threaded manner.
2. The constant flow valve according to claim 1, wherein the valve body (1) comprises a cross-shaped body (5), the lower end of the body (5) is opened, a bottom cover (6) is connected to the lower port of the body (5) in a threaded manner, a columnar connecting portion (6 a) is arranged at the lower end of the bottom cover (6), the control rod (4) comprises a rod portion (4 a) and a head portion (4 b) with the outer diameter larger than that of the rod portion (4 a), the rod portion (4 a) is arranged in the columnar connecting portion (6 a) in a penetrating manner, a concave cavity is formed in the upper end of the columnar connecting portion (6 a), and the head portion (4 b) is connected in the concave cavity in a threaded manner.
3. Constant flow valve according to claim 2, characterized in that the threaded connection length of the control rod (4) to the cavity is greater than the maximum distance of the downward movement of the valve stem (2).
4. A constant flow valve according to claim 3, characterized in that the control rod (4) is arranged coaxially with the valve rod (2), and the area of the upper end surface of the head part (4 b) is larger than the area of the lower end surface of the valve rod (2).
5. The constant flow valve according to claim 1, 2, 3 or 4, wherein the valve rod (2) sequentially comprises a valve plate (2 c), a sliding head (2 b) and a rod body (2 a) from top to bottom, the valve plate (2 c) is positioned in the upper cavity (1 c) and divides the upper cavity (1 c) into upper and lower parts, the sliding head (2 b) is slidably arranged in an upper port of the channel (1 e), a sealing ring (7) is arranged on the outer side of the sliding head (2 b), the outer diameter of the rod body (2 a) is smaller than the inner diameter of the channel (1 e), and a sealing gasket (8) is fixed at the lower end of the rod body (2 a).
6. Constant flow valve according to claim 1, characterized in that the outer end face of the blocking cap (12) is provided with a straight groove, the outer side of one end of the cylindrical support (10) close to the water outlet end (1 b) is provided with an annular convex part, and the outer side of the annular convex part is provided with an O-shaped ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910047495.6A CN109630729B (en) | 2019-01-18 | 2019-01-18 | Constant flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910047495.6A CN109630729B (en) | 2019-01-18 | 2019-01-18 | Constant flow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630729A CN109630729A (en) | 2019-04-16 |
| CN109630729B true CN109630729B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910047495.6A Active CN109630729B (en) | 2019-01-18 | 2019-01-18 | Constant flow valve |
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| CN (1) | CN109630729B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB954412A (en) * | 1961-02-20 | 1964-04-08 | Jerry Kirsch | Constant-pressure hydraulic flow control apparatus |
| GB1299486A (en) * | 1969-06-05 | 1972-12-13 | Donaldson Co Inc | Fluid filters |
| GB1393339A (en) * | 1973-11-22 | 1975-05-07 | Krechel J L | Compressor unloader and check valve unit |
| CN2721995Y (en) * | 2004-06-13 | 2005-08-31 | 诸暨市三峰机械有限公司 | Cleanable decompressing device of safety valve |
| CN201184698Y (en) * | 2007-12-17 | 2009-01-21 | 海尔集团公司 | Connecting pipe fitting for water heater |
| JP2010084880A (en) * | 2008-10-01 | 2010-04-15 | Tabuchi Corp | Pipe joint |
| JP2010253448A (en) * | 2009-04-28 | 2010-11-11 | Inax Corp | Strainer unit and method of cleaning strainer |
| CN205155271U (en) * | 2015-10-30 | 2016-04-13 | 浙江艾默樱零部件有限公司 | Take electric water heater relief valve of filter |
| CN105972348A (en) * | 2016-06-01 | 2016-09-28 | 南京沪友冶金机械制造有限公司 | Three-way valve |
| CN205877489U (en) * | 2016-07-13 | 2017-01-11 | 江苏艾思飞精密零部件有限公司 | A aluminium contact for vehicle air conditioner filter |
| CN205896308U (en) * | 2016-08-15 | 2017-01-18 | 浙江恒捷铜业有限公司 | Pressure reducing valve |
| CN206626223U (en) * | 2017-03-24 | 2017-11-10 | 雷纳德流体智能科技江苏股份有限公司 | A kind of pressure-reducing valve |
| CN206846032U (en) * | 2016-12-01 | 2018-01-05 | 杨海鸿 | Triple valve |
| CN107664239A (en) * | 2016-07-29 | 2018-02-06 | 中国船舶重工集团公司第七二三研究所 | A kind of blindmate fluid connector |
| CN209398894U (en) * | 2019-01-18 | 2019-09-17 | 菲时特集团股份有限公司 | A kind of permanent flow valve |
-
2019
- 2019-01-18 CN CN201910047495.6A patent/CN109630729B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB954412A (en) * | 1961-02-20 | 1964-04-08 | Jerry Kirsch | Constant-pressure hydraulic flow control apparatus |
| GB1299486A (en) * | 1969-06-05 | 1972-12-13 | Donaldson Co Inc | Fluid filters |
| GB1393339A (en) * | 1973-11-22 | 1975-05-07 | Krechel J L | Compressor unloader and check valve unit |
| CN2721995Y (en) * | 2004-06-13 | 2005-08-31 | 诸暨市三峰机械有限公司 | Cleanable decompressing device of safety valve |
| CN201184698Y (en) * | 2007-12-17 | 2009-01-21 | 海尔集团公司 | Connecting pipe fitting for water heater |
| JP2010084880A (en) * | 2008-10-01 | 2010-04-15 | Tabuchi Corp | Pipe joint |
| JP2010253448A (en) * | 2009-04-28 | 2010-11-11 | Inax Corp | Strainer unit and method of cleaning strainer |
| CN205155271U (en) * | 2015-10-30 | 2016-04-13 | 浙江艾默樱零部件有限公司 | Take electric water heater relief valve of filter |
| CN105972348A (en) * | 2016-06-01 | 2016-09-28 | 南京沪友冶金机械制造有限公司 | Three-way valve |
| CN205877489U (en) * | 2016-07-13 | 2017-01-11 | 江苏艾思飞精密零部件有限公司 | A aluminium contact for vehicle air conditioner filter |
| CN107664239A (en) * | 2016-07-29 | 2018-02-06 | 中国船舶重工集团公司第七二三研究所 | A kind of blindmate fluid connector |
| CN205896308U (en) * | 2016-08-15 | 2017-01-18 | 浙江恒捷铜业有限公司 | Pressure reducing valve |
| CN206846032U (en) * | 2016-12-01 | 2018-01-05 | 杨海鸿 | Triple valve |
| CN206626223U (en) * | 2017-03-24 | 2017-11-10 | 雷纳德流体智能科技江苏股份有限公司 | A kind of pressure-reducing valve |
| CN209398894U (en) * | 2019-01-18 | 2019-09-17 | 菲时特集团股份有限公司 | A kind of permanent flow valve |
Non-Patent Citations (4)
| Title |
|---|
| 严丹等.实用管道安装工程手册.机械工业出版社,1977,(第1版),793-794. * |
| 张能武等.新编使用五金手册.山东科学技术出版社,2009,(第1版),1037-1038. * |
| 邹贤富等.中低压工业管道安装.中国建筑工业出版社,1977,(第1版),108-110. * |
| 韩泽光等.机械设计基础.吉林大学出版社,2012,(第1版),47-48. * |
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