CN203209225U - Spray needle for fluidic device - Google Patents
Spray needle for fluidic device Download PDFInfo
- Publication number
- CN203209225U CN203209225U CN2013202256225U CN201320225622U CN203209225U CN 203209225 U CN203209225 U CN 203209225U CN 2013202256225 U CN2013202256225 U CN 2013202256225U CN 201320225622 U CN201320225622 U CN 201320225622U CN 203209225 U CN203209225 U CN 203209225U
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- nozzle
- nozzle needle
- main body
- supporter
- convex rib
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Abstract
The utility model discloses a spray needle for a fluidic device, which comprises a spray needle man body (1) and a conical part (2) arranged at the end part of the spray needle main body (1). The spray needle is characterized in that support bodies are arranged at the periphery direction of the spray needle main body (1), so when the spray needle is assembled in a spray nozzle (9) of the fluidic device, the outer faces of the support bodies and the inner cavity of the spray nozzle are matched to limit the spray needle main body (1); a fluid channel (3) is formed between the support bodies, so when the pressure of fluid flowing by the spray nozzle is larger or overlarge and the flow speed of the fluid is not stable, the spray needle is effectively prevented from deviating from the nozzle of the spray nozzle or radially swinging due to the non-uniform larger radial pressure in the radial direction under the premise of not influencing the smooth flowing of the fluid, and the spraying effect of the spray nozzle is not influenced.
Description
Technical field
The utility model relates to the fluidic device field, particularly, relates to a kind of nozzle needle for fluidic device.
Background technology
Usually, fluidic device comprises nozzle and the nozzle needle that is installed in this nozzle chamber.Up to the present, the shape of this nozzle needle is generally long fine texture, its head is needle-like, and described nozzle needle can move by the axial direction along nozzle under the effect of external force, thereby the overflowing end face that adjusting and nozzle constitute is to regulate, to control the flow of injection stream.Such fluidic device is widely used in the hot-water heating system in family, hotel and hotel.
For example, Chinese patent literature CN 102086941B discloses a kind of water-mixing valve, comprise valve body, this valve body is provided with the valve body cold water inlet, described valve body cold water inlet is communicated with nozzle, be provided with a needle-valve that is used for auxiliary adjustment cold water flow in the described nozzle, by precession or screw out the delivery port sectional area of described needle jet.
For another example, Chinese patent literature CN 102767210A discloses the adjustable fluidic device of a kind of multi-water resources, comprise ejector main body, fluid operating chamber, nozzle needle, described fluid operating chamber is arranged in the ejector main body, front end in the fluid operating chamber is provided with nozzle, nozzle needle is arranged on the extended line of fluid operating chamber inner nozzle center line, the afterbody of this nozzle needle is provided with the nozzle needle travel control device, wherein, described nozzle needle can move along the axial direction of nozzle under the control of nozzle needle travel control device, to adjust the injection flow of nozzle.
In practice, enterprise is in order to reduce production costs, and existing nozzle needle for hot-water heating system (needle-valve) is manufactured to elongated shape usually, and is concrete as above two pieces of disclosed shapes of patent documentation accompanying drawing.But, the applicant is by discovering, the nozzle needle of this elongated shape uses in reality and has certain defective, namely under the less situation of the fluid pressure that passes through nozzle, the nozzle needle of elongated shape is less at the pressure that it bears in the radial direction, it can satisfy job requirement, but, when the pressure of the fluid by nozzle more greatly or very big, and under the unsettled situation of rate of flow of fluid, nozzle needle will bear very big inhomogeneous radial pressure in the radial direction at it, namely along the length direction of nozzle needle, the radial pressure that different parts bears is difference, thereby causes the spout of this nozzle needle and nozzle to depart from or nozzle needle will radially wobble, and has influence on the jeting effect of nozzle.
At the problems referred to above, if thicker with the processing of the diameter of nozzle needle then must cause the weight of whole fluidic device to increase, correspondingly improve production cost.
The utility model content
Problem to be solved in the utility model is the technical problem that the nozzle needle of existing fluidic device swing easily takes place under the effect of fluid or departs from the spout of nozzle, thereby provide a kind of simple in structure, easy for installation, the nozzle needle that is used for fluidic device that can stable operation under the different pressures of fluid and flow velocity.
To achieve these goals, the utility model provides a kind of nozzle needle for fluidic device, comprise nozzle needle main body and the tapered portion that is arranged on described nozzle needle body end, described nozzle needle main body circumferentially is provided with supporter, with in the nozzle that is assemblied in fluidic device at described nozzle needle the time, the outer surface of described supporter cooperates with spacing to described nozzle needle main body with the inner chamber of described nozzle, forms the fluid passage between described supporter.
Described supporter comprises around described nozzle needle main body circumferentially uniform and extend a plurality of fins that arrange along its axial direction, and described a plurality of fins form described fluid passage each other.
Described fin comprises first convex rib and second convex rib, wherein, described first convex rib can be relative with the cold water inlet of nozzle, and its radial dimension is less than the radial dimension of described second convex rib, form described fluid passage with the internal chamber wall with nozzle, the outer surface of described second convex rib cooperates with the inner chamber of described nozzle.
Be formed with the fluting corresponding with described second convex rib on the internal chamber wall of described nozzle, described second convex rib can be engaged in the described fluting and slide along the axial direction of described nozzle.
Described fin is three, four, five or six.
Described supporter is the annular backup pad that is arranged on the described nozzle needle main body, forms a plurality of pod apertures as described fluid passage on the plate face of this annular backup pad.
Described supporter is annulus, and this annulus is connected with described nozzle needle main body by a plurality of ribs, and described rib forms described fluid passage each other.
The supercharging that has between the described supporter of described nozzle needle main body and the described tapered portion mixes the water section, and this supercharging mixes the cylindrical shape that is shaped as of water section.
The diameter that described supercharging mixes the water section greater than, equal or be slightly less than the diameter of the jet hole of described nozzle.
The diameter of described tapered portion dwindles to leading section from its root, and its tapering is 10 °-150 °, and the length of described tapered portion is less than or equal to the removable stroke of described nozzle.
The diameter of described tapered portion dwindles to the leading section LINEAR CONTINUOUS from its root.
Technique scheme of the present utility model compared with prior art has the following advantages:
Nozzle needle for fluidic device of the present utility model, its nozzle needle main body circumferentially be provided with supporter, with in the nozzle that is assemblied in fluidic device at this nozzle needle the time, the outer surface of supporter will form with the inner chamber of nozzle and cooperate with spacing to the nozzle needle main body, between supporter, be formed with the fluid passage for the fluid circulation, thereby when the pressure of the fluid by nozzle more greatly or very big, and when rate of flow of fluid is unstable, do not influencing under the smooth and easy mobile prerequisite of fluid, can prevent nozzle needle effectively because it bears very big uniform radial pressure and depart from the spout of nozzle or radially wobble in the radial direction, have influence on the jeting effect of nozzle.
Nozzle needle for fluidic device of the present utility model, its supporter comprises around the nozzle needle main body circumferentially uniform and extend a plurality of fins that arrange along its axial direction, form the fluid passage between a plurality of fins, thereby be beneficial to flowing of fluid, further, each fin comprises first convex rib and second convex rib, and the radial dimension of first convex rib is less than the radial dimension of second convex rib, thereby can further strengthen the jeting effect of nozzle.
Nozzle needle for fluidic device of the present utility model, have supercharging between the supporter of its nozzle needle main body and the tapered portion and mix the water section, this supercharging mixes the cylindrical shape that is shaped as of water section, mix at this with the water that the fluid passage is introduced, and can realize pressurized effect, thereby guarantee the last jeting effect of nozzle.
Description of drawings
Be expressly understood for the content that makes utility model is easier, below in conjunction with accompanying drawing, the utility model be described in further detail, wherein,
Fig. 1 represents the perspective view of the nozzle needle that the utility model specific embodiment provides;
Fig. 2 represents the schematic diagram of wherein a part of structure that the nozzle needle of the utility model specific embodiment cooperates with nozzle;
Fig. 3 represents a kind of structural representation of supporter of the nozzle needle of the utility model specific embodiment;
Fig. 4 represents the structural representation of another kind of supporter of the nozzle needle of the utility model specific embodiment.
Description of reference numerals
1-nozzle needle main body, the 1a-supercharging mixes water section, 2-tapered portion, 2a-root, 2b-leading section, 3-fluid passage, 4-fin, 41-first convex rib, 42-second convex rib, 5-annular backup pad, 6-pod apertures, 7-annulus, 8-rib, 10-jet hole.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.
As depicted in figs. 1 and 2, the nozzle needle that is used for fluidic device that the specific embodiment of the present utility model provides comprises nozzle needle main body 1 and is arranged on the tapered portion 2 of nozzle needle main body 1 end, wherein, be provided with supporter along circumferential direction on the outer surface of nozzle needle main body 1, with in the nozzle 9 that is assemblied in fluidic device at described nozzle needle the time, the outer surface of described supporter can cooperate with the inner chamber of nozzle 9 or contact to carry out spacing to described nozzle needle main body 1, correspondingly, between described supporter, be formed with the fluid passage 3 of circulating for fluid.
The nozzle needle of this spline structure in actual use, even the pressure of the fluid by nozzle 9 more greatly or very big and flow velocity is unstable, namely along the length direction of nozzle needle, even the radial pressure that the different parts of nozzle needle bears differs greatly, also can not influence under the smooth and easy mobile prerequisite of fluid, prevent nozzle needle effectively because it bears very big uniform radial pressure and depart from the spout of nozzle 9 or radial wobble or swing take place in the radial direction, avoid having influence on the jeting effect of the jet hole 10 of nozzle 9.
Effect and function according to above-mentioned described supporter, in practical structures, this supporter can have multiple different version, describe several structures of described supporter in detail below with reference to accompanying drawing, but it will be appreciated that, described supporter is not limited to following described structure, and those skilled in the art can make various distortion, replacement or modification to it.
First kind of structure of described supporter:
In this structure, as shown in Figure 1, described supporter comprises that outer surface around described nozzle needle main body 1 is uniform and extend a plurality of fins 4 that arrange along the axial direction of nozzle needle along circumferential direction, and a plurality of fins 4 form described fluid passage 3 each other.Like this, after nozzle needle and nozzle assembling, fin 4 can contact cooperation with the inner chamber of nozzle, to carry out spacing to the nozzle needle main body.
In reality processing, fin 4 can by the machining mode for example cutting way form, also can be by mode and nozzle needle main body 1 disposal moldings such as casting or injection mouldings, can select suitable forming method for use according to actual.
Further, in order to strengthen the jeting effect of nozzle, fin 4 comprises first convex rib 41 and second convex rib 42, wherein, with after nozzle cooperates, first convex rib 41 can be relative with the cold water inlet of nozzle, and the radial dimension of first convex rib 41 is less than the radial dimension of described second convex rib 42, form described fluid passage 3 with the internal chamber wall with nozzle, evenly import with the water with the nozzle water inlet in the circulation passage 3 of nozzle needle, the outer surface of second convex rib 42 can cooperate with the inner chamber of nozzle 9, thereby by fin 4 structural improvement, can when guaranteeing that supporter is spacing to nozzle needle, can improve the jeting effect of nozzle 9.
The length of described first convex rib 41 depends on the axial dimension size of nozzle water inlet, is generally the length dimension of nozzle water inlet on the nozzle needle axial direction at the stroke that adds nozzle needle or nozzle.
Need to prove that described first convex rib 41 herein can only be one section cylinder, but in order to strengthen the intensity of nozzle needle main body 1, preferably, fin 4 keeps first convex rib 41.
In addition, the outside dimension of second convex rib 42 depends on the sectional area of whole fluid passages 3, and this sectional area could guarantee that greater than nozzle and injection sectional area after nozzle needle cooperates the loss of jet expansion hydraulic pressure drops to minimum.
At this moment, nozzle needle both can move back and forth along the axial direction of nozzle under the position-limiting action of supporter, also can rotate in nozzle.
Certainly, in actual use, can be formed with the fluting corresponding with second convex rib 42 on the internal chamber wall of nozzle 9, this fluting extends along the axial direction of nozzle 9, and second convex rib 42 can be engaged in the described fluting and slide along the axial direction of described nozzle.In this structure, described fluting has guide effect and anti-rotation effect simultaneously to nozzle needle, and namely nozzle needle can only move back and forth along the axial direction of nozzle, and can not rotate in nozzle.
For easily manufactured, simultaneously in order to guarantee that cold water pressure before jet expansion does not incur loss, preferably, the quantity of fin 4 is three, four, five or six, thereby what guarantee fluid passage 3 that a plurality of fins form each other crosses the water cross section greater than the injection cross section of nozzle, does not incur loss or is subjected to very small loss to guarantee cold water pressure before jet expansion.But the quantity of fin 4 is not limited to this, also can two or more.
Second kind of structure of described supporter:
In this structure, as shown in Figure 4, described supporter is the annular backup pad 5 that is arranged on the described nozzle needle main body 1, forms a plurality of pod apertures 6 as described fluid passage on the plate face of this annular backup pad 5.
The third structure of described supporter:
In this structure, as shown in Figure 3, described supporter is annulus 7, and this annulus 7 is connected with described nozzle needle main body 1 by a plurality of ribs 8, and described rib 8 forms described fluid passage 3 each other.
The shape of annulus 7 and rib 8 is set to be beneficial to the smooth and easy of fluid and flows, and produces minimal effect or does not exert an influence with fluid flow.
Below only be three kinds of versions having described supporter, but it is not limited to this.
In addition, as shown in Figure 1, for fear of nozzle needle with after nozzle cooperates, when the tapered portion 2 of nozzle needle cooperates with jet hole fully, the inner chamber conical surface at the supporter of nozzle needle and jet hole place produces interferes, preferably, have supercharging between the described supporter of described nozzle needle main body 1 and the described tapered portion 2 and mix water section 1a, this supercharging mixes the cylindrical shape that is shaped as of water section 1a, with after this nozzle needle and nozzle assembling, specifically as shown in Figure 2, the supercharging of nozzle needle mix water section 1a can and the internal chamber wall of nozzle between form a cold water and go into fluid space, can guarantee that the fluid of introducing by the fluid passage mixes and realize pressurized effect in face of the spray cone that enters tapered portion 2 and jet hole 10 formation, and can realize pressurized effect, thereby guarantee the jet hole 10 final good jeting effects of nozzle 9.
As shown in Figure 2, when nozzle needle along the axial direction of nozzle 9 when jet hole 10 moves, the tapered portion 2 of nozzle needle will cooperate with jet hole 10 gradually, therefore, for prevent when tapered portion 2 with after jet hole 10 cooperates fully, also have cold water from jet hole 10 ejections, preferably, the diameter that described supercharging mixes water section 1a greater than, equal or be slightly less than the diameter of the jet hole 10 of described nozzle.
Herein " greater than, equal " refer to tapered portion 2 and jet hole 10 cooperate fully after, supercharging mixes water section 1a can be with jet hole 10 complete closed, to prevent that cold water is from jet hole 10 ejections.
" being slightly less than " herein refers to that the diameter that supercharging mixes water section 1a compares with the diameter of jet hole 10, both have slight difference, namely when tapered portion 2 with after jet hole 10 cooperates fully, has slight gap between the external peripheral surface of the mixed water section 1a of supercharging and the inner circumferential surface of jet hole 10, though have a spot of cold water can be by this gap from jet hole 10 ejection, can ignore the minimal effect that the hot water of nozzle 9 outer walls of flowing through produces.
Described supercharging mixes the length of water section 1a can not be too short, otherwise might cause nozzle water outlet bifurcated, i.e. it is relevant that supercharging mixes the thickness of the cross section of cross section, jet expansion of the length of water section 1a and fluid passage and supporter, will can be very not big but influence.
In addition, as shown in Figure 1, the diameter of described tapered portion 2 dwindles to leading section 2b from its root 2a, its tapering is 10 °-150 °, this tapering comprises 10 ° and 150 °, and after nozzle needle and nozzle 9 assemblings, the length of described tapered portion 2 can be less than or equal to the removable stroke of described nozzle 9, like this, can realize that jet hole 10 cooperates with the suitable of tapered portion 2.
In addition, the diameter of described tapered portion 2 dwindles to leading section 2b LINEAR CONTINUOUS from its root 2a, and namely tapered portion 2 is conical structure.Unimpeded for fluid circulation, as shown in Figure 2, tapered portion 2 can be linear fit with the jet hole 10 of nozzle 9.Certainly, tapered portion 2 also can be for non-linear or be object parabola face form, automatically to make some appropriateness adjustment according to the different flow velocity of fluid.
Obviously, above-described embodiment only is for example clearly is described, is not the restriction to embodiment.Concerning those of ordinary skill in the field, also can make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (11)
1. nozzle needle that is used for fluidic device, comprise nozzle needle main body (1) and be arranged on the tapered portion (2) of described nozzle needle main body (1) end, it is characterized in that, described nozzle needle main body (1) circumferentially is provided with supporter, with in the nozzle (9) that is assemblied in fluidic device at described nozzle needle the time, the outer surface of described supporter cooperates with the inner chamber of described nozzle with spacing to described nozzle needle main body (1), forms fluid passage (3) between described supporter.
2. nozzle needle according to claim 1, it is characterized in that, described supporter comprises around described nozzle needle main body (1) circumferentially uniform and extend a plurality of fins (4) that arrange along its axial direction, and described a plurality of fins (4) form described fluid passage (3) each other.
3. nozzle needle according to claim 2, it is characterized in that, described fin (4) comprises first convex rib (41) and second convex rib (42), wherein, described first convex rib (41) can be relative with the cold water inlet of nozzle, and its radial dimension forms described fluid passage (3) less than the radial dimension of described second convex rib (42) with the internal chamber wall with nozzle, and the outer surface of described second convex rib (42) cooperates with the inner chamber of described nozzle.
4. nozzle needle according to claim 3, it is characterized in that, be formed with the fluting corresponding with described second convex rib (42) on the internal chamber wall of described nozzle, described second convex rib (42) can be engaged in the described fluting and slide along the axial direction of described nozzle.
5. according to claim 2,3 or 4 described nozzle needles, it is characterized in that described fin (4) is three, four, five or six.
6. nozzle needle according to claim 1 is characterized in that, described supporter forms a plurality of pod apertures (6) as described fluid passage for being arranged on the annular backup pad (5) on the described nozzle needle main body (1) on the plate face of this annular backup pad (5).
7. nozzle needle according to claim 1 is characterized in that, described supporter is annulus (7), and this annulus (7) is connected with described nozzle needle main body (1) by a plurality of ribs (8), and described rib (8) forms described fluid passage (3) each other.
8. according to claim 1,6 or 7 described nozzle needles, it is characterized in that the supercharging that has between the described supporter of described nozzle needle main body (1) and the described tapered portion (2) mixes water section (1a), this supercharging mixes the cylindrical shape that is shaped as of water section (1a).
9. nozzle needle according to claim 8 is characterized in that, the diameter that described supercharging mixes water section (1a) greater than, equal or be slightly less than the diameter of the jet hole (10) of described nozzle.
10. nozzle needle according to claim 1, it is characterized in that, the diameter of described tapered portion (2) dwindles to leading section (2b) from its root (2a), and its tapering is 10 °-150 °, and the length of described tapered portion (2) is less than or equal to the removable stroke of described nozzle.
11. according to your 10 described nozzle needles of claim, it is characterized in that the diameter of described tapered portion (2) dwindles to leading section (2b) LINEAR CONTINUOUS from its root (2a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202256225U CN203209225U (en) | 2013-04-27 | 2013-04-27 | Spray needle for fluidic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202256225U CN203209225U (en) | 2013-04-27 | 2013-04-27 | Spray needle for fluidic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203209225U true CN203209225U (en) | 2013-09-25 |
Family
ID=49198797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202256225U Withdrawn - After Issue CN203209225U (en) | 2013-04-27 | 2013-04-27 | Spray needle for fluidic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203209225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785560A (en) * | 2013-04-27 | 2014-05-14 | 广州海鸥卫浴用品股份有限公司 | Spray needle for jet flow device |
-
2013
- 2013-04-27 CN CN2013202256225U patent/CN203209225U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785560A (en) * | 2013-04-27 | 2014-05-14 | 广州海鸥卫浴用品股份有限公司 | Spray needle for jet flow device |
| WO2014173071A1 (en) * | 2013-04-27 | 2014-10-30 | 广州海鸥卫浴用品股份有限公司 | Spray needle for jet device |
| CN103785560B (en) * | 2013-04-27 | 2016-12-07 | 广州海鸥卫浴用品股份有限公司 | Nozzle needle for mjector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130925 Effective date of abandoning: 20161207 |
|
| AV01 | Patent right actively abandoned |