CN218094255U

CN218094255U - Pilot operated overflow valve for seawater desalination

Info

Publication number: CN218094255U
Application number: CN202221782362.7U
Authority: CN
Inventors: 杜广杰; 牛壮
Original assignee: Wuxi Kairuide Fluid Technology Co ltd
Current assignee: Wuxi Kairuide Fluid Technology Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-12-20
Anticipated expiration: 2032-07-11

Abstract

The utility model provides a pilot-operated overflow valve for sea water desalination, including water inlet, delivery port, main valve and pilot valve, the main valve includes main valve core, sets up in the main valve seat of main valve core upper end, cover the main valve cover that establishes in the main valve core outside, the fit clearance between main valve core and the main valve seat forms the main valve chamber, main valve intracavity is equipped with the main valve spring, the main valve spring can be with the sealed top of main valve core tightly in the hole department of water inlet; the main valve core is provided with a throttling hole for communicating the water inlet with the main valve cavity, and the main valve seat is provided with a damping hole for communicating the main valve cavity with the pilot valve; the pilot valve comprises a pilot valve sleeve, a pilot valve seat and a pilot valve core, and a pilot spring is arranged between the pilot valve seat and the pilot valve core; and the pilot valve sleeve, the main valve seat and the main valve sleeve are all provided with a drainage channel communicated with the water outlet.

Description

Pilot operated overflow valve for seawater desalination

Technical Field

The utility model relates to a hydraulic component field especially relates to a sea water desalination is with leading formula overflow valve.

Background

The traditional direct-acting overflow valve adopts a spring structure, an overflow pressure valve core is set to be balanced under two acting forces of overflow pressure and force generated by a compression spring through the compression spring, when the flow passing through the overflow valve is increased, the opening of a valve port is increased, the compression amount of the spring is increased, therefore, the rigidity of the spring is required to be higher, the service life of the spring can be reduced after long-term high pressure, the traditional direct-acting overflow valve is low in pressure stabilizing precision and poor in flow characteristic, and the wide application of the traditional direct-acting overflow valve in a pneumatic system is limited.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that current guide's overflow valve often can have certain corrosion to main valve core in high corrosive liquid such as sea water or industrial waste water, uses for a long time and can influence the sealed effect between main valve core and the water inlet to influence pressure balance effect, and can make guide's overflow valve inefficacy, the utility model provides an above-mentioned problem is solved with guide's overflow valve to sea water desalination.

The utility model provides a technical scheme that its technical problem adopted is: a pilot overflow valve for seawater desalination comprises a water inlet, a water outlet, a main valve and a pilot valve, wherein the main valve comprises a main valve core, a main valve seat arranged at the upper end of the main valve core and a main valve sleeve sleeved outside the main valve core; the main valve core is provided with a throttling hole for communicating the water inlet with the main valve cavity, and the main valve seat is provided with a damping hole for communicating the main valve cavity with the pilot valve; the pilot valve comprises a pilot valve sleeve, a pilot valve seat and a pilot valve core, wherein a pilot spring is arranged between the pilot valve seat and the pilot valve core, and the pilot spring can seal and attach the pilot valve core to the damping hole; and the pilot valve sleeve, the main valve seat and the main valve sleeve are all provided with a drainage channel communicated with the water outlet.

Further: and a sealing layer made of peek is embedded into one end, close to the water inlet, of the main valve core.

Further, the method comprises the following steps: and a support ring which penetrates through the drainage channel is arranged between the main valve seat and the main valve sleeve.

Further, the method comprises the following steps: the pilot valve also comprises an end cover fixed at the upper end of the pilot valve sleeve, the end cover is provided with an adjusting mechanism, the adjusting mechanism is a bolt penetrating through the end cover and tightly pushing the pilot valve seat, and a nut sleeved on the bolt, the bolt can be adjusted in a screwing-in or screwing-out state by rotating the nut, and then the pressure of the pilot spring pushing the pilot valve core is adjusted.

Further: sealing rings are arranged between the main valve core and the main valve seat, between the main valve seat and the main valve sleeve, between the main valve seat and the pilot valve sleeve, between the end cover and the pilot valve seat and between the pilot valve core and the pilot valve sleeve.

The utility model has the advantages that the main valve core of the pilot overflow valve for seawater desalination of the utility model bears smaller pressure ratio than that of a direct-acting overflow valve, so that only a spring with smaller rigidity is needed, and the service life of the spring is prolonged; in addition, the sealing layer made of corrosion-resistant materials is arranged at one end, close to the water inlet, of the main valve core, so that the sealing effect and the service life of the main valve core are greatly improved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a right side view of the present invention.

In the figure, 1, a water inlet, 2, a water outlet, 3, a main valve core, 4, a main valve seat, 5, a main valve sleeve, 6, a main valve cavity, 7, a main valve spring, 8, a throttling hole, 9, a damping hole, 10, a pilot valve sleeve, 11, a pilot valve seat, 12, a pilot valve core, 13, a pilot spring, 14, a drainage channel, 15, a sealing layer, 16, a support ring, 17, an end cover, 18, a bolt, 19, a nut, 20 and a sealing ring.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

As shown in fig. 1 to 2, the utility model provides a pilot overflow valve for seawater desalination, including water inlet 1, water outlet 2, main valve and pilot valve, the main valve includes main valve core 3, main valve seat 4 arranged on the upper end of main valve core 3, main valve cover 5 that the cover is established outside main valve core 3, the fit clearance between main valve core 3 and main valve seat 4 forms main valve chamber 6, main valve spring 7 is arranged in main valve chamber 6, main valve spring 7 can be with main valve core 3 sealed top tight in the hole department of water inlet 1; the main valve core 3 is provided with a throttling hole 8 for communicating the water inlet 1 with the main valve cavity 6, and the main valve seat 4 is provided with a damping hole 9 for communicating the main valve cavity 6 with the pilot valve; the pilot valve comprises a pilot valve sleeve 10, a pilot valve seat 11 and a pilot valve core 12, a pilot spring 13 is arranged between the pilot valve seat 11 and the pilot valve core 12, and the pilot spring 13 can seal and attach the pilot valve core 12 to the damping hole 9; and the pilot valve sleeve 10, the main valve seat 4 and the main valve sleeve 5 are all provided with a drainage channel 14 communicated with the water outlet 2.

When the seawater-saving pilot valve is used, seawater flows in from the water inlet 1 and flows into the main valve cavity 6 through the throttling hole 8, the seawater in the main valve cavity 6 pushes the pilot valve core 12 through the damping hole 9, and when the water pressure in the damping hole 9 is smaller than the set pressure of the pilot valve, the pilot valve core 12 cannot move; when the water pressure in the damping hole 9 gradually increases and is greater than the pressure value set by the pilot valve, the pilot valve core 12 moves upwards and communicates the damping hole 9 with the discharge channel 14, and the seawater flows into the water outlet 2 through the discharge channel 14; when the pressure of the water inlet 1 is gradually increased and is greater than the pressure of the main valve spring 7, the main valve element 3 moves upwards under the pushing of pressure water to communicate the water inlet 1 with the water outlet 2, most of seawater directly flows from the water inlet 1 to the water outlet 2, and a small part of seawater flows into the main valve element 3 through the orifice 8 and flows into the water outlet 2 through the damping hole 9 and the drainage channel 14.

And a sealing layer 15 made of peek is embedded in one end of the main valve element 3 close to the water inlet 1. The Peek material has good wear resistance and corrosion resistance, and the sealing effect and the service life of the main valve element 3 can be greatly improved by selecting the material as the sealing layer 15 on the main valve element 3.

A support ring 16 is arranged between the main valve seat 4 and the main valve sleeve 5 and extends through the leakage flow channel 14. The support ring 16 can support between the main valve seat 4 and the main valve housing 5, and a sealing ring 20 is provided between the support ring 16 and the main valve seat 4 and between the support ring 16 and the main valve housing 5 to prevent seawater in the leakage passage 14 from flowing out through a gap between the main valve seat 4 and the main valve housing 5.

The pilot valve further comprises an end cover 17 fixed at the upper end of the pilot valve sleeve 10, an adjusting mechanism is arranged on the end cover 17, the adjusting mechanism is a bolt 18 penetrating through the end cover 17 and abutting against the pilot valve seat 11, and a nut 19 sleeved on the bolt 18, the bolt 18 can be adjusted in a screwing-in or screwing-out state by rotating the nut 19, and then the pressure of the pilot spring 13 abutting against the pilot valve core 12 is adjusted.

When the pressure of the pilot valve needs to be increased, only the nut 19 needs to be screwed to further tightly press the bolt 18 against the pilot valve seat 11, so that the pilot valve seat 11 moves downwards, the pilot spring 13 increases the pressure of the pilot valve core 12 tightly pressed against the damping hole 9 under the movement of the pilot valve seat 11, and conversely, when the pressure of the pilot valve needs to be reduced, the nut 19 needs to be unscrewed.

Sealing rings 20 are arranged between the main valve element 3 and the main valve seat 4, between the main valve seat 4 and the main valve sleeve 5, between the main valve seat 4 and the pilot valve sleeve 10, between the end cover 17 and the pilot valve seat 11, and between the pilot valve element 12 and the pilot valve sleeve 10.

During operation, the sealing ring 20 forms a seal between the small gaps through which seawater does not flow, so as to prevent the seawater from overflowing out of the water outlet 2 to pollute the environment and influence the use effect of the overflow valve.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a sea water desalination is with leading formula overflow valve, includes water inlet (1), delivery port (2), main valve and pilot valve, its characterized in that: the main valve comprises a main valve core (3), a main valve seat (4) arranged at the upper end of the main valve core (3) and a main valve sleeve (5) sleeved outside the main valve core (3), a main valve cavity (6) is formed by a fit clearance between the main valve core (3) and the main valve seat (4), a main valve spring (7) is arranged in the main valve cavity (6), and the main valve spring (7) can tightly press the main valve core (3) at an inner hole of the water inlet (1) in a sealing manner;

a throttling hole (8) for communicating the water inlet (1) with the main valve cavity (6) is formed in the main valve core (3), and a damping hole (9) for communicating the main valve cavity (6) with the pilot valve is formed in the main valve seat (4);

the pilot valve comprises a pilot valve sleeve (10), a pilot valve seat (11) and a pilot valve core (12), a pilot spring (13) is arranged between the pilot valve seat (11) and the pilot valve core (12), and the pilot spring (13) can seal and attach the pilot valve core (12) to the damping hole (9);

and the pilot valve sleeve (10), the main valve seat (4) and the main valve sleeve (5) are all provided with a drainage channel (14) communicated with the water outlet (2).

2. The pilot operated overflow valve for seawater desalination as defined in claim 1, wherein: and a sealing layer (15) made of peek is embedded into one end, close to the water inlet (1), of the main valve core (3).

3. The pilot operated overflow valve for seawater desalination as defined in claim 1, wherein: a support ring (16) which penetrates through the leakage channel (14) is arranged between the main valve seat (4) and the main valve sleeve (5).

4. The pilot operated overflow valve for seawater desalination as defined in claim 1, wherein: the pilot valve also comprises an end cover (17) fixed at the upper end of the pilot valve sleeve (10), an adjusting mechanism is arranged on the end cover (17), the adjusting mechanism is a bolt (18) penetrating through the end cover (17) and tightly pushing against the pilot valve seat (11) and a nut (19) sleeved on the bolt (18), the bolt (18) can be adjusted in a screwing-in or screwing-out state by rotating the nut (19), and then the pressure of a pilot spring (13) pushing against the pilot valve core (12) is adjusted.

5. The pilot operated overflow valve for seawater desalination as defined in claim 1, wherein: sealing rings (20) are arranged between the main valve core (3) and the main valve seat (4), between the main valve seat (4) and the main valve sleeve (5), between the main valve seat (4) and the pilot valve sleeve (10), and between the pilot valve core (12) and the pilot valve sleeve (10).