CN114263754A - Flow regulation structure and double-helix conical sealing pressure reduction regulating valve with same - Google Patents
Flow regulation structure and double-helix conical sealing pressure reduction regulating valve with same Download PDFInfo
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- CN114263754A CN114263754A CN202111562692.5A CN202111562692A CN114263754A CN 114263754 A CN114263754 A CN 114263754A CN 202111562692 A CN202111562692 A CN 202111562692A CN 114263754 A CN114263754 A CN 114263754A
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Abstract
The invention provides a flow regulating structure and a double-helix conical sealing pressure-reducing regulating valve with the same, which comprise a valve seat and an integrated spiral conical valve core rod; the lower part of the integrated spiral conical surface valve core rod is provided with a valve core, and the valve core is in an inverted cone shape; the taper of the valve core is 1: 50-1: 30, of a nitrogen-containing gas; a valve seat sealing hole matched with the valve core is formed in the valve seat; 2n spiral grooves which are mutually crossed are formed in the conical surface of the valve core, and n is an integer which is more than or equal to 1; according to the invention, through the mutually matched valve core and valve seat sealing holes, the sealing function is realized by the fit of the conical surfaces, and the whole conical surface is a sealing surface, so that the service life is greatly prolonged; the side face of the valve core is provided with the even number of spiral grooves, so that fluid can flow out through the spiral grooves to play a role in reducing pressure, the spiral force of the fluid can be balanced through the even number of spiral grooves, and the condition that the valve core rotates under the action of the spiral force of the fluid is prevented.
Description
Technical Field
The invention relates to the technical field of regulating valves, in particular to a flow regulating structure and a double-helix conical sealing depressurization regulating valve with the same.
Background
In a conventional regulating valve, only small flow is required to be regulated under certain high pressure difference or conventional working conditions, but cavitation and flash evaporation are easy to occur to media under the high pressure difference, so that flushing is caused to a sealing part of a valve internal part, the regulating performance and the sealing effect of the valve internal part are influenced, and the service life of the valve internal part is prolonged.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a flow regulating structure and a double-helix conical sealing pressure-reducing regulating valve with the same, wherein the sealing function is realized by matching a valve core and a valve seat sealing hole which are matched with each other through conical surfaces, and the whole conical surface is a sealing surface, so that the service life is greatly prolonged; the side face of the valve core is provided with the even number of spiral grooves, so that fluid can flow out through the spiral grooves to play a role in reducing pressure, the spiral force of the fluid can be balanced through the even number of spiral grooves, and the condition that the valve core rotates under the action of the spiral force of the fluid is prevented.
In order to achieve the purpose, the invention adopts the following technical scheme:
a flow regulating structure comprises a valve seat and an integrated spiral conical valve core rod; the lower part of the integrated spiral conical surface valve core rod is provided with a valve core, and the valve core is in an inverted cone shape; a valve seat sealing hole matched with the valve core is formed in the valve seat; 2n spiral grooves are formed in the conical surface of the valve core, and n is an integer larger than or equal to 1.
Preferably, the taper of the valve core is 1: 50-1: 30.
according to the invention, through the mutually matched valve core and valve seat sealing holes, the sealing function is realized by the fit of the conical surfaces, and the whole conical surface is a sealing surface, so that the service life is greatly prolonged; the conical surface of the valve core is provided with the even number of spiral grooves, so that fluid can flow out through the spiral grooves to play a role in reducing pressure, the spiral force of the fluid can be balanced through the even number of spiral grooves, and the valve core is prevented from rotating under the action of the spiral force of the fluid.
Preferably, one side of the integrated spiral conical surface valve core rod, which is close to the valve core, is provided with a section of guide part; the upper part of the integrated spiral conical surface valve core rod is a transmission connecting part.
The invention also provides a double-helix conical sealing depressurization regulating valve with the flow regulating structure, which comprises a regulating valve body and a film type actuating mechanism; the regulating valve body comprises a valve cover, a valve body, a guide sleeve and a flow regulating structure; the valve seat and the guide sleeve of the flow regulating structure are embedded in the valve body, and the guide sleeve is arranged above the valve seat; the valve cover is covered on the valve body; the integrated spiral conical valve core rod penetrates through the guide sleeve and the valve cover and extends to the outer side of the regulating valve body; the valve core of the integrated spiral conical surface valve core rod is movably embedded in the valve seat sealing hole of the valve seat; the guide part of the integrated spiral conical valve core rod is movably embedded in the guide sleeve; and the transmission connecting part of the integrated spiral conical valve core rod is in transmission connection with the thin film type actuating mechanism.
Preferably, the gap between the integrated spiral conical valve core rod and the valve cover is filled with a filler, and a filler gland sleeved on the integrated spiral conical valve core rod in a ring mode is arranged above the filler.
Preferably, the thin film type actuating mechanism comprises an actuating mechanism output shaft, a thin film type mechanism bottom shell, a thin film type mechanism upper cover and a thin film type mechanism tray; the top end of the output shaft of the actuating mechanism is connected with the thin film type mechanism tray; a film type mechanism lower cavity is formed between the film type mechanism tray and the film type mechanism bottom shell; the bottom end of the output shaft of the actuating mechanism extends downwards to penetrate through the bottom shell of the thin film type mechanism and is in transmission connection with the transmission connecting part of the integrated spiral conical valve core rod; a film is attached to the bottom of the tray; and two ends of the film are fixedly connected to the connecting surface of the bottom shell of the film type mechanism and the upper cover of the film type mechanism.
Preferably, the transmission connecting part of the integrated spiral conical valve core rod is connected with the bottom end of the output shaft of the actuating mechanism through a connecting part.
Preferably, the film type actuating mechanism is fixed on the valve cover through a film type mechanism bracket, and the bottom end of the film type mechanism bracket is fixedly connected with the valve cover through a locking nut; the top of the film type mechanism support is fixedly connected to the bottom of the film type mechanism bottom shell through a bolt.
Preferably, one side of the connecting piece is also provided with a pointer, and the inner side of the film type mechanism support is also provided with a scale corresponding to the pointer.
Preferably, a plurality of springs are arranged between the film type mechanism upper cover and the film type mechanism tray.
The invention has the beneficial effects that: according to the invention, through the mutually matched valve core and valve seat sealing holes, the sealing function is realized by the fit of the conical surfaces, and the whole conical surface is a sealing surface, so that the service life is greatly prolonged; the side face of the valve core is provided with the even number of spiral grooves, so that fluid can flow out through the spiral grooves to play a role in reducing pressure, the spiral force of the fluid can be balanced through the even number of spiral grooves, and the condition that the valve core rotates under the action of the spiral force of the fluid is prevented.
Drawings
Fig. 1 is a schematic structural diagram of a flow rate regulating structure according to the present invention.
Fig. 2 is a schematic structural view of the valve seat of the present invention.
FIG. 3 is a schematic structural diagram of the double-helix conical sealing depressurization regulating valve.
Fig. 4 is a schematic structural view of the regulating valve body according to the present invention.
In the figure, 1-a valve cover, 2-a valve body, 3-a guide sleeve, 4-a valve seat, 41-a valve seat sealing hole, 5-an integrated spiral conical valve core rod, 51-a valve core, 52-a spiral groove, 53-a guide part, 54-a transmission connecting part, 6-a packing, 7-a packing gland, 8-a connecting part, 81-a pointer, 82-a scale, 9-a locking nut, 10-an actuator output shaft, 11-a film type mechanism air inlet, 12-a film type mechanism lower chamber, 13-a film type mechanism support, 14-a film type mechanism bottom shell, 15-a film type mechanism upper cover, 16-a film type mechanism tray, 17-a film and 18-a spring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 2: a flow regulating structure comprises a valve seat 4 and an integrated spiral conical valve core rod 5; a valve core 51 is arranged at the lower part of the integrated spiral conical surface valve core rod 5, the valve core 51 is in an inverted cone shape, and the area of the top surface of the valve core 51 is larger than that of the bottom surface of the valve core 51; the taper of the valve core 51 is 1: 50-1: 30, of a nitrogen-containing gas; a valve seat sealing hole 41 matched with the valve core 51 is formed in the valve seat 4; the conical surface of the valve core 51 is further provided with 2n spiral grooves 52, wherein n is an integer greater than or equal to 1.
According to the invention, the valve core 51 and the valve seat sealing hole 41 which are matched with each other realize the sealing function by means of the fit of the conical surfaces, and the whole conical surface is a sealing surface, so that the service life is greatly prolonged; the side surface of the valve core 51 is provided with the even number of spiral grooves 52, so that fluid can flow out through the spiral grooves to play a role in reducing pressure, the spiral force of the fluid can be balanced through the even number of spiral grooves 52, and the valve core 51 is prevented from rotating under the action of the spiral force of the fluid.
The 2n spiral grooves 52 are equally divided into a first spiral groove and a second spiral groove with opposite spiral directions, and the spiral angles of the first spiral groove and the second spiral groove are equal.
The longer the length of the side surface of the valve core 51 is, the larger the adjustable ratio of the flow regulating structure is; and the conical surface is adopted for sealing, no gap exists between the valve core 51 and the valve seat sealing hole 41, the full stroke is adjustable, and the adjusting performance of the valve is improved.
Further, the taper of the valve core 51 is 1: 50-1: 30.
further, a section of guide part 53 is arranged on one side of the valve core rod 5 of the integrated spiral conical surface, which is close to the valve core 51; the upper part of the integrated spiral conical surface valve core rod 5 is a transmission connecting part 54.
Example 2
As shown in fig. 1 to 4, a double spiral tapered sealing step-down regulator valve having a flow rate regulating structure according to embodiment 1 includes a regulator valve body and a diaphragm actuator; the regulating valve body comprises a valve cover 1, a valve body 2, a guide sleeve 3 and a flow regulating structure; the valve seat 4 and the guide sleeve 3 of the flow regulating structure are embedded in the valve body 2, and the guide sleeve 3 is arranged above the valve seat 4; the valve cover 1 is covered on the valve body 2; the integrated spiral conical valve core rod 5 penetrates through the guide sleeve 3 and the valve cover 1 and extends to the outer side of the regulating valve body; the valve core 51 of the integrated spiral conical valve core rod 5 can be movably embedded in the valve seat sealing hole 41 of the valve seat 4; the guide part 53 of the integrated spiral conical valve core rod 5 is movably embedded in the guide sleeve 3; and the transmission connecting part 54 of the integrated spiral conical surface valve core rod 5 is in transmission connection with the thin film type actuating mechanism.
Through the guide sleeve 3 and the guide part 53, the situation that the regulating valve body shakes due to fluid force after the valve core 51 is separated from the conical surface of the valve seat sealing hole 41 is avoided; and the inner side surface of the guide sleeve 3 is also provided with a vertical depressurization groove for depressurization.
Furthermore, a packing 6 is filled in a gap between the integrated spiral conical surface valve core rod 5 and the valve cover 1, and a packing gland 7 sleeved on the integrated spiral conical surface valve core rod 5 in a ring manner is arranged above the packing 6.
The packing 6 is arranged between the integrated spiral conical valve core rod 5 and the valve cover 1, and is compacted in the valve cover 1 through the packing gland 7, so that the integrated spiral conical valve core rod 5 is assisted, the concentricity of the integrated spiral conical valve core rod 5 and the guide sleeve 3 is ensured, and the situation that the integrated spiral conical valve core rod 5 is clamped with the valve seat 4 under the condition of small gap in the installation and operation processes is ensured.
Further, the thin film type actuator comprises an actuator output shaft 10, a thin film type mechanism bottom shell 14, a thin film type mechanism upper cover 15 and a thin film type mechanism tray 16; the top end of the output shaft 10 of the actuating mechanism is fixedly connected with the thin film type mechanism tray 16; a thin film type mechanism lower chamber 12 is formed between the thin film type mechanism tray 16 and the thin film type mechanism bottom shell 14; the bottom end of the output shaft 10 of the actuating mechanism extends downwards to penetrate through the bottom shell 14 of the thin film type mechanism and is in transmission connection with the transmission connecting part 54 of the integral spiral conical valve core rod 5; a film 17 is attached to the bottom of the tray 16; two ends of the film 17 are fixedly connected to the connecting surface of the film-type mechanism bottom shell 14 and the film-type mechanism upper cover 15.
Further, the transmission connecting part 54 of the integral type spiral conical valve core rod 5 is connected with the bottom end of the actuating mechanism output shaft 10 through a connecting part 8.
The connecting piece 8 is connected with the transmission connecting part 54 of the integrated spiral conical surface valve core rod 5 and the bottom end of the actuating mechanism output shaft 10, so that a better transmission effect is realized.
Further, the film type actuating mechanism is fixed on the valve cover 1 through a film type mechanism bracket 13, and the bottom end of the film type mechanism bracket 13 is fixedly connected with the valve cover 1 through a locking nut 9; the top of the film type mechanism bracket 13 is fixedly connected to the bottom of the film type mechanism bottom shell 14 through bolts.
Furthermore, a pointer 81 is further disposed on one side of the connecting member 8, and a scale 82 is further disposed on the inner side of the film-type mechanism support 13 corresponding to the pointer 81.
Through pointer 81 and scale 82, more audio-visual reaction the rising distance of integral type spiral conical surface case pole 5, and then reflect the state of opening and shutting of governing valve body.
Further, a plurality of springs 18 are provided between the film mechanism cover 15 and the film mechanism tray 16.
When the air is lost, the membrane type mechanism tray 16 is quickly pressed down through the elastic force of the spring 18, so that the adjusting valve body is quickly in a sealing state, and the control is ensured to have higher accuracy.
Because the invention is used for fine flow regulation, the fit clearance between the valve core 51 and the valve seat 4 is small, which is beneficial to the accurate control of flow, and the integral spiral conical valve core rod 5 is adopted, thereby reducing the accumulated tolerance generated by a plurality of connections.
The working principle of the invention is as follows: according to the flow regulating structure and the double-spiral conical sealing depressurization regulating valve with the same, air pressure enters the lower cavity 12 of the film type mechanism through the air inlet 11 of the film type mechanism to drive the output shaft 10 of the film type mechanism to move upwards, the output shaft 10 of the film type mechanism is connected with the integrated spiral conical valve core rod 5 through the connecting piece 8 and drives the integrated spiral conical valve core rod 5 to move upwards simultaneously, and therefore the action of the valve core 51 is achieved to regulate the flow.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A flow regulating structure characterized by: comprises a valve seat (4) and an integrated spiral conical surface valve core rod (5); the lower part of the integrated spiral conical surface valve core rod (5) is provided with a valve core (51), and the valve core (51) is in an inverted cone shape; a valve seat sealing hole (41) matched with the valve core (51) is formed in the valve seat (4); 2n spiral grooves (52) are formed in the conical surface of the valve core (51), and n is an integer larger than or equal to 1.
2. The flow rate adjustment structure according to claim 1, characterized in that: the taper of the valve core (51) is 1: 50-1: 30.
3. the flow rate adjustment structure according to claim 1, characterized in that: a section of guide part (53) is arranged on one side of the integrated spiral conical surface valve core rod (5) close to the valve core (51); the upper part of the integrated spiral conical surface valve core rod (5) is provided with a transmission connecting part (54).
4. A double-helix conical sealing depressurization regulating valve with a flow regulating structure according to any one of claims 1 to 3, characterized in that: comprises a regulating valve body and a film type actuating mechanism; the regulating valve body comprises a valve cover (1), a valve body (2), a guide sleeve (3) and a flow regulating structure; the valve seat (4) and the guide sleeve (3) of the flow regulating structure are embedded in the valve body (2), and the guide sleeve (3) is arranged above the valve seat (4); the valve cover (1) is covered on the valve body (2); the integrated spiral conical valve core rod (5) penetrates through the guide sleeve (3) and the valve cover (1) and extends to the outer side of the regulating valve body; the valve core (51) of the integrated spiral conical surface valve core rod (5) is movably embedded in the valve seat sealing hole (41) of the valve seat (4); the guide part (53) of the integrated spiral conical surface valve core rod (5) is movably embedded in the guide sleeve (3); and the transmission connecting part (54) of the integrated spiral conical surface valve core rod (5) is in transmission connection with the thin film type actuating mechanism.
5. The double-helix tapered sealing pressure-reducing regulating valve of a flow regulating structure according to claim 4, characterized in that: the gap between the integrated spiral conical surface valve core rod (5) and the valve cover (1) is filled with a filler (6), and a filler gland (7) sleeved on the integrated spiral conical surface valve core rod (5) is arranged above the filler (6).
6. The double-helix tapered sealing pressure-reducing regulating valve of a flow regulating structure according to claim 4, characterized in that: the thin film type actuating mechanism comprises an actuating mechanism output shaft (10), a thin film type mechanism bottom shell (14), a thin film type mechanism upper cover (15) and a thin film type mechanism tray (16); the top end of the output shaft (10) of the actuating mechanism is connected with the thin film type mechanism tray (16); a thin film type mechanism lower chamber (12) is formed between the thin film type mechanism tray (16) and the thin film type mechanism bottom shell (14); the bottom end of the output shaft (10) of the actuating mechanism extends downwards to penetrate through the bottom shell (14) of the thin film type mechanism and is in transmission connection with a transmission connecting part (54) of the integrated spiral conical valve core rod (5); a film (17) is attached to the bottom of the tray (16); and two ends of the film (17) are fixedly connected to the connecting surface of the film type mechanism bottom shell (14) and the film type mechanism upper cover (15).
7. The double-helix tapered sealing pressure-reducing regulating valve of a flow regulating structure according to claim 6, characterized in that: the transmission connecting part (54) of the integrated spiral conical surface valve core rod (5) is connected with the bottom end of the actuating mechanism output shaft (10) through a connecting piece (8).
8. The double-helix tapered sealing pressure-reducing regulating valve of a flow regulating structure according to claim 7, characterized in that: the film type actuating mechanism is fixed on the valve cover (1) through a film type mechanism support (13), and the bottom end of the film type mechanism support (13) is fixedly connected with the valve cover (1) through a locking nut (9); the top of the film type mechanism support (13) is fixedly connected to the bottom of the film type mechanism bottom shell (14) through a bolt.
9. The double-helix tapered sealing pressure-reducing regulating valve of a flow regulating structure according to claim 8, characterized in that: and one side of the connecting piece (8) is also provided with a pointer (81), and the inner side of the film type mechanism support (13) corresponding to the pointer (81) is also provided with a scale (82).
10. The double-helix tapered sealing pressure-reducing regulating valve of a flow regulating structure according to claim 6, characterized in that: a plurality of springs (18) are arranged between the film type mechanism upper cover (15) and the film type mechanism tray (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562692.5A CN114263754A (en) | 2021-12-20 | 2021-12-20 | Flow regulation structure and double-helix conical sealing pressure reduction regulating valve with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562692.5A CN114263754A (en) | 2021-12-20 | 2021-12-20 | Flow regulation structure and double-helix conical sealing pressure reduction regulating valve with same |
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| Publication Number | Publication Date |
|---|---|
| CN114263754A true CN114263754A (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111562692.5A Pending CN114263754A (en) | 2021-12-20 | 2021-12-20 | Flow regulation structure and double-helix conical sealing pressure reduction regulating valve with same |
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| CN (1) | CN114263754A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1600480A (en) * | 1978-03-09 | 1981-10-14 | South Western Ind Res | Fluid throttles pressure reducers or flow controllers |
| JP2000065220A (en) * | 1998-08-12 | 2000-03-03 | Kitz Corp | Control valve |
| CN104358885A (en) * | 2014-11-04 | 2015-02-18 | 无锡市亚迪流体控制技术有限公司 | High-pressure difference and high-flow rate adjustable ratio control valve |
| CN107091368A (en) * | 2017-06-01 | 2017-08-25 | 李元兵 | Dropping valve with multilevel decompression valve element |
| CN208295283U (en) * | 2018-04-17 | 2018-12-28 | 西姆流体技术（上海）有限公司 | A kind of anti-vapour of High Pressure Difference is turbid to use screw channel formula spool control valve for small flows |
| CN109798369A (en) * | 2019-03-01 | 2019-05-24 | 浙江山能仪表有限公司 | A kind of Pneumatic single-seat regulating valve |
| CN211624198U (en) * | 2020-01-22 | 2020-10-02 | 无锡卓尔阀业有限公司 | Micro annular multi-stage pressure reduction regulating valve |
| CN113790271A (en) * | 2021-08-19 | 2021-12-14 | 浙江永盛科技股份有限公司 | Pneumatic film pressure reduction regulating valve |
-
2021
- 2021-12-20 CN CN202111562692.5A patent/CN114263754A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1600480A (en) * | 1978-03-09 | 1981-10-14 | South Western Ind Res | Fluid throttles pressure reducers or flow controllers |
| JP2000065220A (en) * | 1998-08-12 | 2000-03-03 | Kitz Corp | Control valve |
| CN104358885A (en) * | 2014-11-04 | 2015-02-18 | 无锡市亚迪流体控制技术有限公司 | High-pressure difference and high-flow rate adjustable ratio control valve |
| CN107091368A (en) * | 2017-06-01 | 2017-08-25 | 李元兵 | Dropping valve with multilevel decompression valve element |
| CN208295283U (en) * | 2018-04-17 | 2018-12-28 | 西姆流体技术（上海）有限公司 | A kind of anti-vapour of High Pressure Difference is turbid to use screw channel formula spool control valve for small flows |
| CN109798369A (en) * | 2019-03-01 | 2019-05-24 | 浙江山能仪表有限公司 | A kind of Pneumatic single-seat regulating valve |
| CN211624198U (en) * | 2020-01-22 | 2020-10-02 | 无锡卓尔阀业有限公司 | Micro annular multi-stage pressure reduction regulating valve |
| CN113790271A (en) * | 2021-08-19 | 2021-12-14 | 浙江永盛科技股份有限公司 | Pneumatic film pressure reduction regulating valve |
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