CN220990369U

CN220990369U - Ejector, soft water valve head and soft water equipment

Info

Publication number: CN220990369U
Application number: CN202322557764.8U
Authority: CN
Inventors: 何福添; 刘华春; 朱运波; 张野; 李忠华
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-05-24
Anticipated expiration: 2033-09-19

Abstract

The utility model relates to the technical field of drinking water, and provides a jet device, a soft water valve head and soft water equipment. The housing has a cavity therein, the housing being provided with a primary inlet, a secondary inlet and a mixing outlet. The venturi tube is arranged in the cavity, the venturi tube is provided with an input port, a suction port and an output port, the input port is communicated with the main inlet, the suction port is communicated with the secondary inlet, and the output port is communicated with the mixing outlet. Through set up the choke in main entry, input port or the runner that communicates main entry and input port, after the fluid that pressure fluctuation is great gets into the ejector from main entry, the choke throttles the fluid for the flow of the great fluid of pressure fluctuation remains stable. And the fluid with stable flow rate enters the venturi tube and is mixed with other types of fluid entering through the secondary inlet, so that mixed fluid with stable concentration ratio is obtained.

Description

Ejector, soft water valve head and soft water equipment

Technical Field

The utility model relates to the technical field of drinking water, in particular to an ejector, a soft water valve head and soft water equipment.

Background

The ejector is a device for realizing a local low-pressure area through the flow channel design, and specific liquid or gas is sucked into the main flow channel through the ejector and is mixed with the liquid or gas of the main flow channel, so that mixed liquid or gas with specific mixing ratio is obtained for use. In practical application of the ejector, the flow of the liquid or the gas in the main flow channel is unstable due to overlarge pressure change, so that the flow and the mixing proportion of the mixed liquid or the gas flowing out of the ejector are unstable, the mixing proportion and the flow have severe changes, and the requirement of practical application is difficult to meet.

Disclosure of utility model

The present utility model is directed to solving at least one of the technical problems existing in the related art. Therefore, the utility model provides the ejector, which effectively stabilizes the flow rate of the fluid and the concentration proportion of the fluid.

The utility model also provides a soft water valve head.

The utility model also provides a soft water device.

An ejector according to an embodiment of the first aspect of the present utility model comprises:

A housing having a cavity therein, the housing being provided with a primary inlet, a secondary inlet and a mixing outlet;

The venturi tube is arranged in the cavity and is provided with an input port, a suction port and an output port, the input port is communicated with the main inlet, and the suction port is communicated with the secondary inlet; the output port is communicated with the mixing outlet;

And a restrictor provided in any one of the main inlet, the input port, and a flow path communicating the main inlet and the input port, the restrictor being adapted to stabilize a flow rate of fluid entering the input port.

According to the ejector disclosed by the embodiment of the utility model, the throttle is arranged in the main inlet, the input port or the flow channel communicating the main inlet and the input port, and after the fluid with larger pressure fluctuation enters the ejector from the main inlet, the throttle throttles the fluid, so that the flow of the fluid with larger pressure fluctuation is kept stable. And the fluid with stable flow rate enters the venturi tube and is mixed with other types of fluid entering through the secondary inlet, so that mixed fluid with stable concentration ratio is obtained. Compared with the ejector in the related art, the ejector provided by the utility model effectively improves the stability of the ratio of the fluid flow and the concentration of the mixed fluid.

According to one embodiment of the utility model, the venturi comprises:

The venturi tube body is internally provided with a convergent flow passage section, a separation flow passage section and a divergent flow passage section which are sequentially communicated, wherein an inlet of the convergent flow passage section is communicated with the input port, and the diameter of the inlet of the convergent flow passage section is larger than that of an outlet of the convergent flow passage section; the separation flow passage section is communicated with the suction inlet, the outlet of the divergent flow passage section is communicated with the output port, and the diameter of the inlet of the divergent flow passage section is smaller than that of the outlet of the divergent flow passage section.

According to an embodiment of the utility model, the tapered runner section and the diverging runner section are both truncated cone-shaped.

According to one embodiment of the utility model, the inlet diameter of the tapered flow section is 3.0mm-6.0mm, the outlet diameter of the tapered flow section is 0.3mm-2.0mm, and the length of the tapered flow section is 5.0mm-15.0mm.

According to one embodiment of the utility model, the length of the divided flow channel segments is 1.5mm-4.5mm.

According to one embodiment of the utility model, the diameter of the entrance of the diverging flow passage section is 0.5mm-2.5mm, the diameter of the exit of the diverging flow passage section is 3.2mm-7.0mm, and the length of the diverging flow passage section is 8.0mm-18.0mm.

According to one embodiment of the utility model, the input port comprises:

the connecting section is communicated with the inlet of the tapered flow passage section;

The installation cavity is positioned at one side of the connecting section, which is away from the tapered flow channel section, and is respectively communicated with the connecting section and the main inlet, and the throttle is embedded in the installation cavity.

According to one embodiment of the utility model, the inner diameter of the installation cavity is larger than the inner diameter of the connecting section, a step is formed at the joint of the installation cavity and the connecting section, and the restrictor is abutted with the step.

According to one embodiment of the utility model, the housing comprises:

a first housing, the main inlet being located in the first housing;

The cavity is positioned in the second shell, the secondary inlet and the mixing outlet are positioned in the second shell, and the second shell is detachably connected with the first shell.

According to one embodiment of the utility model, the venturi further comprises:

The first sealing piece is arranged between the venturi tube body and the inner wall of the cavity, and the first sealing piece is respectively in sealing fit with the venturi tube body and the inner wall of the cavity.

According to one embodiment of the utility model, a positioning groove is formed on one side of the first shell, which faces the second shell, and one end of the venturi tube body, which faces the first shell, is abutted with the bottom wall of the positioning groove.

The second sealing piece is sleeved at one end of the venturi tube body, which faces the first shell, and is respectively in sealing fit with the end face of the venturi tube body, which faces one end of the first shell, and the bottom wall of the positioning groove.

A soft water valve head according to a second aspect of the present utility model comprises a valve head body having a first flow passage communicating with a main inlet and a second flow passage communicating with a mixing outlet, and any one of the above-described fluid ejectors.

According to the soft water valve head provided by the embodiment of the utility model, fluid with larger pressure fluctuation flows into the soft water valve head from the first flow passage, the fluid with larger pressure fluctuation is converted into mixed fluid with stable flow and concentration ratio by the ejector, and the mixed fluid flows out from the second flow passage for practical use.

The water softening device according to the embodiment of the third aspect of the utility model comprises a salt tank, a resin tank and the soft water valve head, wherein the secondary inlet is communicated with the salt tank, and the second runner is communicated with the resin tank.

According to the soft water device provided by the embodiment of the utility model, tap water with large pressure fluctuation flows into the soft water device from the first flow passage, and the tap water with large pressure fluctuation is converted into tap water with stable flow through the soft water valve head. The brine in the salt tank is sucked into the soft water valve head through the venturi tube, tap water with stable flow rate is mixed with the brine in the soft water valve head, and mixed brine with stable flow rate and concentration ratio is obtained. The mixed brine with stable flow rate and concentration ratio enters the resin tank from the second flow passage for practical use.

The above technical solutions in the embodiments of the present utility model have at least one of the following technical effects: through set up the choke in main entry, input port or the runner that communicates main entry and input port, after the fluid that pressure fluctuation is great gets into the ejector from main entry, the choke throttles the fluid for the flow of the great fluid of pressure fluctuation remains stable. And the fluid with stable flow rate enters the venturi tube and is mixed with other types of fluid entering through the secondary inlet, so that mixed fluid with stable concentration ratio is obtained. Compared with the ejector in the related art, the ejector provided by the utility model effectively improves the stability of the ratio of the fluid flow and the concentration of the mixed fluid.

Further, the fluid with larger pressure fluctuation flows into the soft water valve head from the first flow passage, the fluid with larger pressure fluctuation is converted into the mixed fluid with stable flow and concentration ratio by the ejector, and the mixed fluid flows out from the second flow passage for practical use.

Further, tap water with large pressure fluctuation flows into the water softening device from the first flow passage, and the tap water with large pressure fluctuation is converted into tap water with stable flow through the soft water valve head. The brine in the salt tank is sucked into the soft water valve head through the venturi tube, tap water with stable flow rate is mixed with the brine in the soft water valve head, and mixed brine with stable flow rate and concentration ratio is obtained. The mixed brine with stable flow rate and concentration ratio enters the resin tank from the second flow passage for practical use.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic side view of an ejector according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional front view of an ejector with a throttle provided at an input port according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a cross-sectional front view of an ejector with a throttle provided at a main inlet according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a cross-sectional front view of a venturi body according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram showing a cross-sectional front view of a venturi body according to an embodiment of the present utility model.

Reference numerals:

100. A housing; 110. a main inlet; 120. a secondary inlet; 130. a mixing outlet; 140. a first housing; 141. a positioning groove; 150. a second housing; 160. a second seal; 200. a venturi tube; 210. an input port; 211. a connection section; 212. a mounting cavity; 220. a suction inlet; 230. an output port; 240. a venturi body; 241. a tapered flow passage section; 242. separating the flow path sections; 243. a diverging flow passage section; 250. a first seal; 300. a throttle.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., 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 embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Fig. 1 illustrates a schematic side view structure of an ejector according to an embodiment of the present utility model, fig. 2 illustrates a schematic front view cross-section structure of an ejector having a restrictor provided at an input port according to an embodiment of the present utility model, fig. 3 illustrates a schematic front view cross-section structure of an ejector having a restrictor provided at a main inlet according to an embodiment of the present utility model, and fig. 1 to 3 illustrate a first aspect of the present utility model provides an ejector, which includes a housing 100, a venturi 200, and a restrictor 300. The housing 100 has a cavity inside, and the housing 100 is provided with a main inlet 110, a sub-inlet 120, and a mixing outlet 130. The venturi 200 is disposed in the cavity, the venturi 200 having an input port 210, an intake port 220, and an output port 230, the input port 210 being in communication with the primary inlet 110, the intake port 220 being in communication with the secondary inlet 120, and the output port 230 being in communication with the mixing outlet 130. The restrictor 300 is provided to any one of the main inlet 110, the input port 210, and a flow passage (not shown) communicating the main inlet 110 and the input port 210, and the restrictor 300 is adapted to stabilize the flow rate of the fluid entering the input port 210.

According to the ejector provided by the utility model, the throttle 300 is arranged in the main inlet 110, the input port 210 or the flow channel communicating the main inlet 110 and the input port 210, and after fluid with larger pressure fluctuation enters the ejector from the main inlet 110, the throttle 300 throttles the fluid, so that the flow of the fluid with larger pressure fluctuation is kept stable. The fluid with stable flow rate enters the venturi 200 to be mixed with other fluid of other types entering through the secondary inlet 120, so as to obtain mixed fluid with stable concentration ratio. Compared with the ejector in the related art, the ejector provided by the utility model effectively improves the stability of the ratio of the fluid flow and the concentration of the mixed fluid.

It is understood that the restrictor 300 may be a throttle valve or a restrictor button. The flow of fluid into the venturi 200 is stabilized and the concentration ratio of fluid exiting the mixing outlet 130 is stabilized by a throttle valve or a restrictor in series with the flow passage inside the venturi 200. As shown in fig. 2, the restrictor 300 is provided at the input port 210, and the fluid is throttled by the restrictor 300 after entering the input port 210, thereby becoming fluid with stable flow rate. In order to prevent fluid from passing between the inner wall of the input port 210 and the restrictor 300, a seal is provided between the restrictor 300 and the inner wall of the input port 210.

Of course, the restrictor 300 may be disposed at other positions, as shown in fig. 3, the restrictor 300 is disposed at the main inlet 110, and the fluid is throttled by the restrictor 300 after entering the main inlet 110, becomes fluid with stable flow rate, and then enters the input port 210.

Here, the fluid may be either gas or liquid. For example, the tap water flows into the ejector from the main inlet 110, is throttled by the throttle 300, and the flow rate of tap water with large water pressure fluctuation is kept stable. After the tap water with stable flow rate enters the venturi tube 200, negative pressure is generated in the separation flow channel section 242, and under the action of the negative pressure, the salt water enters the venturi tube 200 from the secondary inlet 120 and is mixed with the tap water with stable flow rate, so that the mixed salt water with stable concentration ratio is obtained. The mixed brine with a stable flow rate and concentration ratio flows out from the mixing outlet 130 for practical use.

Fig. 4 illustrates one schematic diagram of a front view cross-section structure of a venturi body provided by an embodiment of the present utility model, fig. 5 illustrates the second schematic diagram of a front view cross-section structure of a venturi body provided by an embodiment of the present utility model, and as shown in fig. 4 and 5, a venturi 200 includes a venturi body 240, in which a tapered flow path section 241, a separation flow path section 242 and a diverging flow path section 243 are sequentially communicated inside the venturi body 240, an inlet of the tapered flow path section 241 is communicated with an input port 210, and an inlet diameter of the tapered flow path section 241 is larger than an outlet diameter of the tapered flow path section 241. The partition flow path section 242 communicates with the suction port 220, and the suction port 220 is located between the inlet and the outlet of the partition flow path section 242 in this embodiment. The outlet of the diverging flow-path section 243 communicates with the output port 230, and the diameter of the inlet of the diverging flow-path section 243 is smaller than the diameter of the outlet of the diverging flow-path section 243.

Fluid input from the input port 210 enters the venturi body 240 from the inlet of the tapered flow section 241, and since the inlet diameter of the tapered flow section 241 is larger than the outlet diameter of the tapered flow section 241, the flow velocity of the fluid increases at the outlet of the tapered flow section 241. During the rapid flow of the fluid through the divided flow path segment 242, a negative pressure is generated inside the divided flow path segment 242, and a pressure difference is generated between the inside of the divided flow path segment 242 and the outside of the ejector. The brine outside the ejector is sucked from the suction inlet 220 under the action of pressure and mixed with tap water input from the input port 210 at the separation flow path section 242 to obtain a mixed fluid with a stable concentration ratio. The mixed fluid enters the diverging flow passage section 243 from the inlet of the diverging flow passage section 243 and is ejected, and finally flows out from the mixing outlet 130.

As shown in fig. 4, the separation flow path 242 may have various structures, for example, the separation flow path 242 may have a through hole. The separation flow path section 242 penetrates through the venturi body 240, an opening at one end of the separation flow path section 242 is blocked by the inner wall of the cavity, and an opening at the other end of the separation flow path section 242 is communicated with the suction inlet 220. By using the partition flow path section 242 in the form of a through hole, the capacity space of the partition flow path section 242 is increased, and the fluid flowing out from the outlet of the tapered flow path section 241 and the fluid sucked from the suction inlet 220 can be more sufficiently mixed in the partition flow path section 242.

As shown in fig. 5, the partition runner segment 242 may also be in the form of a blind hole, and the partition runner segment 242 communicates with the suction port 220. The surface of the separation flow path section 242 on the side away from the suction port 220 is provided as an upwardly inclined slope, increasing the flow rate of the fluid in the separation flow path section 242, so that the negative pressure suction force of the suction port 220 is increased so that other kinds of fluid can be stably sucked into the ejector.

It can be appreciated that the tapered flow channel segment 241 is in a truncated cone shape, that is, the diameter of the tapered flow channel segment 241 gradually decreases from the inlet of the tapered flow channel segment 241 to the outlet of the tapered flow channel segment 241, so that smooth transition of the inner wall of the tapered flow channel segment 241 can be ensured, and resistance of fluid in the tapered flow channel segment 241 is reduced. Likewise, the diverging flow passage section 243 is in a truncated cone shape, and the diameter of the diverging flow passage section 243 gradually increases from the inlet of the diverging flow passage section 243 to the outlet of the diverging flow passage section 243, so that smooth transition of the inner wall of the diverging flow passage section 243 can be ensured, the resistance of the fluid in the diverging flow passage section 243 is reduced, and the mixed fluid can be uniformly mixed in the diverging flow passage section 243.

It is understood that the inlet diameter of tapered flow channel segment 241 is 3.0mm-6.0mm, diameter D1 in FIG. 4. The outlet diameter of the tapered flow channel section 241 is 0.3mm-2.0mm, diameter D2 in FIG. 4. The length of the tapered flow channel segment 241 is 5.0mm-15.0mm, i.e., length L1 in FIG. 4. By adjusting the inlet diameter of the tapered flow section 241, the outlet diameter of the tapered flow section 241 and the length of the tapered flow section 241, the overall shape of the tapered flow section 241 can be changed, thereby changing the flow velocity and flow rate of the fluid at the outlet of the tapered flow section 241, and finally changing the pressure difference at the outlet of the tapered flow section 241. The venturi 200 has different suction forces due to different pressure differences, and the other types of liquids entering through the secondary inlet 120 have different flow rates and the concentration ratios of the mixed fluids are different. The concentration ratio of the mixed fluid can be adjusted by adjusting the inlet diameter of the tapered flow channel section 241, the outlet diameter of the tapered flow channel section 241, and the length of the tapered flow channel section 241.

It will be appreciated that the length of the separation channel segment 242 is 1.5mm to 4.5mm, i.e. length L2 in fig. 4. By adjusting the length of the divided flow path segments 242, the flow rate and mixing time of the fluid in the divided flow path segments 242 is varied. The length of the separation channel segment 242 is adjusted according to the requirement so that the concentration ratio of the mixed fluid is stable.

It is understood that the entrance diameter of diverging flowpath segment 243 is 0.5mm-2.5mm, diameter D3 in fig. 4. The diverging flow-path section 243 has an outlet diameter of 3.2mm-7.0mm, diameter D4 in FIG. 4. The diverging flow-path section 243 has a length of 8.0mm-18.0mm, i.e., length L3 in FIG. 4. By adjusting the diameter of the entrance of the diverging flow passage section 243, the diameter of the exit of the diverging flow passage section 243, and the length of the diverging flow passage section 243, the flow rate, mixing time, and mixing uniformity of the fluid at the entrance of the diverging flow passage section 243 can be varied.

When the secondary inlet 120 flows into the saturated strong brine and the main inlet 110 flows into the tap water, the venturi body 240 with different size combinations can be formed by adjusting the inlet diameter of the convergent channel segment 241, the outlet diameter of the convergent channel segment 241, the length of the separation channel segment 242, the inlet diameter of the divergent channel segment 243, the outlet diameter of the divergent channel segment 243 and the length of the divergent channel segment 243, so that the concentration of the mixed brine can be adjusted within the range of 5% -15% according to the requirement, and the difference between the flow and the concentration is less than 30% of the measured value in each equal-length period when the water pressure of the main inlet 110 is 0.1MPa-0.4 MPa.

It is understood that input port 210 includes a connecting section 211 and a mounting cavity 212, connecting section 211 communicating with the inlet of tapered flow section 241. The installation cavity 212 is located at one side of the connection section 211 away from the tapered flow path section 241, the installation cavity 212 is respectively communicated with the connection section 211 and the main inlet 110, and the throttle 300 is embedded in the installation cavity 212. Fluid entering the input port 210 first enters the mounting cavity 212 and is throttled by the throttle 300 embedded in the mounting cavity 212, so that the flow rate of the fluid is stable. The fluid with a stable flow rate enters the connecting section 211 and finally enters the tapered flow channel section 241. By arranging the connecting section 211, a short buffer space can be provided for the fluid, so that the flow of the fluid is prevented from fluctuating, and the flow of the fluid is more stable.

It will be appreciated that the inner diameter of the mounting cavity 212 is larger than the inner diameter of the connecting section 211, and a step is formed at the junction of the mounting cavity 212 and the connecting section 211, and the throttle 300 abuts against the step. Since the throttle 300 abuts against the step, the assembly of the throttle 300 can be facilitated.

It is understood that the housing 100 includes a first housing 140 and a second housing 150. The main inlet 110 is located at the first housing 140. The cavity is located in the second housing 150, the secondary inlet 120 and the mixing outlet 130 are located in the second housing 150, and the second housing 150 is detachably connected to the first housing 140. The fluid enters the first housing 140 from the main inlet 110, is throttled by the throttle 300, and sequentially passes through the tapered flow path section 241, the separation flow path section 242 and the diverging flow path section 243. By creating a negative pressure inside the venturi 200, other fluid is mixed with the fluid entering from the main inlet 110 after entering from the secondary inlet 120 to form a mixed fluid, and the mixed fluid finally flows out through the mixing outlet 130 of the second housing 150. Because the second housing 150 is detachably connected with the first housing 140, the disassembling mode of the second housing 150 and the first housing 140 is simplified, and maintenance of the ejector is facilitated.

It will be appreciated that the second housing 150 has a mixing chamber therein, and the output port 230 of the venturi 200, the mixing chamber, and the mixing outlet 130 are in communication. After the mixed fluid output from the output port 230 of the venturi tube 200 enters the mixing cavity, the flow velocity of the mixed fluid is suddenly increased due to the sudden increase of the flow channel space, the fluid is disturbed in the mixing cavity to further mix, the mixing uniformity of the mixed fluid is improved, and the mixed fluid after further mixing flows out from the mixing outlet 130.

It is understood that the venturi further comprises a first sealing member disposed between the venturi body and the inner wall of the cavity, the first sealing member being in sealing engagement with the venturi body and the inner wall of the cavity, respectively. By providing the first seal 250, fluid flow through the gap between the venturi body 240 and the inner wall of the cavity can be avoided, thereby avoiding affecting the stability of the fluid flow.

It will be appreciated that the outer peripheral surface of the venturi body 240 is provided with an annular groove in which the first seal 250 is disposed. Specifically, the outer circumferential surfaces of the tapered flow path section 241 and the diverging flow path section 243 are each provided with an annular groove. By providing the first sealing member 250 in the annular grooves of the converging flow path section 241 and the diverging flow path section 243, the sealing between the venturi body 240 and the inner wall of the cavity is further improved, and the stability of the fluid flow is prevented from being affected.

It will be appreciated that the annular groove of the outer peripheral surface of the venturi body 240 is a dovetail groove. Because the bottom width of the annular groove is greater than the width of the notch at the top, the first sealing member 250 protrudes from the notch of the annular groove, the first sealing member 250 can be conveniently embedded in the annular groove, and the first sealing member 250 is embedded in a position which is not easy to move after the annular groove, so that the first sealing member 250 is prevented from moving in the installation process of the venturi 200.

It is understood that the venturi body 240 may be made of stainless steel or polymer material. When the venturi body 240 is made of stainless steel, the venturi 200 is excellent in high temperature resistance and can be used in a relatively severe environment. For example, the venturi 200 made of stainless steel can mix hot water to promote uniform mixing of brine. When the venturi body 240 is made of a polymer material, the venturi 200 is excellent in corrosion resistance. In the case of strong brine, the venturi 200 can be prevented from being corroded in order to extend the service life of the ejector.

It can be appreciated that the side of the first housing 140 facing the second housing 150 is formed with a positioning groove 141, and one end of the venturi body 240 facing the first housing 140 abuts against the bottom wall of the positioning groove 141. The positioning groove 141 is provided to facilitate the assembly of the ejector.

It will be appreciated that the venturi further includes a second seal 160, and the second seal 160 is sleeved on the end of the venturi body 240 facing the first housing 140. The second seal 160 is in sealing engagement with an end surface of the venturi body 240 facing one end of the first housing 140 and a bottom wall of the positioning groove 140, respectively. By arranging the second sealing member 160 in the positioning groove 141, leakage of the fluid at the connection position of the first housing 140 and the second housing 150 is avoided, and stability of the fluid flow is improved.

An embodiment of the present utility model will be described with reference to fig. 1 to 5, and as shown in fig. 1 to 5, the ejector includes a housing 100, a venturi 200, and a restrictor 300. The venturi 200 includes a venturi body 240.

The housing 100 has a cavity inside, and the housing 100 is provided with a main inlet 110, a sub-inlet 120, and a mixing outlet 130. The housing 100 includes a first housing 140 and a second housing 150. The main inlet 110 is located at the first housing 140. The cavity is located in the second housing 150, the secondary inlet 120 and the mixing outlet 130 are located in the second housing 150, and the second housing 150 is detachably connected to the first housing 140. A positioning groove 141 is formed on a side of the first housing 140 facing the second housing 150, and an end of the venturi body 240 facing the first housing 140 abuts against a bottom wall of the positioning groove 141.

The venturi 200 is disposed in the cavity, the venturi 200 having an input port 210, an intake port 220, and an output port 230, the input port 210 being in communication with the primary inlet 110, the intake port 220 being in communication with the secondary inlet 120, and the output port 230 being in communication with the mixing outlet 130. The venturi body 240 has a tapered flow path segment 241, a divided flow path segment 242, and a diverging flow path segment 243, which are sequentially communicated. Both the tapered flow path section 241 and the diverging flow path section 243 are of a truncated cone shape, i.e., the diameter of the tapered flow path section 241 gradually decreases from the inlet of the tapered flow path section 241 to the outlet of the tapered flow path section 241, and the diameter of the diverging flow path section 243 gradually increases from the inlet of the diverging flow path section 243 to the outlet of the diverging flow path section 243.

The inlet of the tapered flow section 241 communicates with the input port 210, and the inlet diameter of the tapered flow section 241 is greater than the outlet diameter of the tapered flow section 241. The inlet diameter of the tapered flow channel section 241 was 3.0mm. The outlet diameter of the tapered flow channel section 241 was 0.3mm. The length of tapered flow channel section 241 is 5.0mm.

The partition flow path section 242 communicates with the suction port 220, and the suction port 220 is located between the inlet and the outlet of the partition flow path section 242. The length of the separation channel segment 242 is 1.5mm.

The outlet of the diverging flow-path section 243 communicates with the output port 230, and the diameter of the inlet of the diverging flow-path section 243 is smaller than the diameter of the outlet of the diverging flow-path section 243. The diameter of the entrance of the diverging flow-path section 243 is 0.5mm, the diameter of the exit of the diverging flow-path section 243 is 3.2mm, and the length of the diverging flow-path section 243 is 8.0mm.

The venturi further includes a first seal disposed between the venturi body and the inner wall of the cavity and a second seal 160 in sealing engagement with the venturi body and the inner wall of the cavity, respectively. The second sealing member 160 is sleeved at one end of the venturi body 240 facing the first housing 140. The second seal 160 is in sealing engagement with an end surface of the venturi body 240 facing one end of the first housing 140 and a bottom wall of the positioning groove 140, respectively.

A restrictor 300 is provided at the input port 210, the restrictor 300 being adapted to stabilize the flow of fluid into the input port 210. Input port 210 includes a connecting section 211 and a mounting cavity 212, connecting section 211 communicating with the inlet of tapered flow section 241. The installation cavity 212 is located at one side of the connection section 211 away from the tapered flow path section 241, the installation cavity 212 is respectively communicated with the connection section 211 and the main inlet 110, and the throttle 300 is embedded in the installation cavity 212. The inner diameter of the installation cavity 212 is larger than that of the connecting section 211, a step is formed at the joint of the installation cavity 212 and the connecting section 211, and the restrictor 300 is abutted with the step.

The working principle of the jet device of the utility model is as follows:

When the tap water enters the ejector from the main inlet and the saturated strong brine enters the ejector from the secondary inlet, the tap water entering the input port 210 first enters the installation cavity 212 and is throttled by the throttle 300 embedded in the installation cavity 212, so that the flow of the tap water is stable. Tap water with stable flow rate enters the connecting section 211 and finally enters the tapered flow channel section 241.

The tap water increases in flow rate at the outlet of the tapered flow channel section 241. During rapid flow of tap water through the divided flow path segment 242, a negative pressure is generated inside the divided flow path segment 242, and a pressure difference is generated between the inside of the divided flow path segment 242 and the outside of the ejector. Under the action of pressure, saturated strong brine outside the ejector is sucked into the ejector from the secondary inlet, passes through the suction inlet 220, and is mixed with tap water input from the input port 210 in the separation flow passage section 242, so that mixed brine with stable concentration ratio is obtained. The mixed brine enters the diverging flow passage section 243 from the inlet of the diverging flow passage section 243 and is ejected, and finally flows out from the mixing outlet 130.

A second aspect of the present utility model provides a soft water valve head comprising a valve head body having a first flow passage in communication with a main inlet 110 and a second flow passage in communication with a mixing outlet 130, and an ejector of any one of the above.

A third aspect of the present utility model provides a water softener comprising a salt tank, a resin tank and the above-mentioned soft water valve head, the secondary inlet 120 being in communication with the salt tank, and the second flow passage being in communication with the resin tank.

According to the soft water device provided by the embodiment of the utility model, tap water with large pressure fluctuation flows into the soft water device from the first flow passage, and the tap water with large pressure fluctuation is converted into tap water with stable flow through the soft water valve head. The brine in the salt tank is sucked into the soft water valve head through the venturi tube 200, and tap water having a stable flow rate is mixed with the brine at the soft water valve head, resulting in mixed brine having a stable flow rate and concentration ratio. The mixed brine with stable flow rate and concentration ratio enters the resin tank from the second flow passage for practical use.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A jet device, comprising:

2. The ejector of claim 1, wherein the venturi comprises:

3. The ejector of claim 2, wherein the converging channel section and the diverging channel section are both frustoconical.

4. A jet device according to claim 2 or 3, wherein the inlet diameter of the tapering flow channel section is 3.0mm-6.0mm, the outlet diameter of the tapering flow channel section is 0.3mm-2.0mm, and the length of the tapering flow channel section is 5.0mm-15.0mm.

5. A jet device according to claim 2 or 3, wherein the length of the dividing flow path section is 1.5mm-4.5mm.

6. A jet device according to claim 2 or 3, wherein the diverging flow passage section has an inlet diameter of 0.5mm-2.5mm, an outlet diameter of 3.2mm-7.0mm, and a length of 8.0mm-18.0mm.

7. A jet as claimed in claim 2 or claim 3 wherein the inlet comprises:

8. The ejector of claim 7, wherein the mounting cavity has an inner diameter greater than an inner diameter of the connecting section, a step being formed at a junction of the mounting cavity and the connecting section, the restrictor abutting the step.

9. A jet as claimed in claim 2 or claim 3 wherein the housing comprises:

a first housing, the main inlet being located in the first housing;

10. The ejector of claim 9, wherein the venturi further comprises:

11. The ejector of claim 9, wherein a positioning groove is formed in a side of the first housing facing the second housing, and an end of the venturi body facing the first housing abuts against a bottom wall of the positioning groove.

12. The ejector of claim 11, wherein the venturi further comprises:

13. A soft water valve head comprising a valve head body and the ejector of any one of claims 1 to 12, the valve head body having a first flow passage in communication with a primary inlet and a second flow passage in communication with a mixing outlet.

14. A water softening apparatus comprising a salt tank, a resin tank, and the soft water valve head of claim 13, wherein the secondary inlet communicates with the salt tank, and the second flow passage communicates with the resin tank.