CN217118645U - One-way fluid conveying structure and tooth flushing device - Google Patents

Abstract

The utility model provides a one-way fluid conveying structure and a tooth rinsing device, relating to the technical field of tooth cleaning equipment, wherein the one-way fluid conveying structure comprises an assembly shell and a valve body, the assembly shell is provided with a fluid inlet, and the valve body is arranged in the assembly shell; the valve body is provided with an inlet elastic part and an outlet elastic part, a fluid cavity is arranged in the valve body, the inlet elastic part is positioned between the fluid inlet and the inlet of the fluid cavity, and the outlet elastic part is arranged at the outlet of the fluid cavity; in a natural state, the inlet elastic part is attached and sealed with the inner wall of the assembly shell, and the outlet elastic part closes the outlet of the fluid cavity; when the pressure in the fluid cavity changes, the inlet elastic part and the outlet elastic part are elastically deformed under the action of pressure difference; the one-way water inlet and outlet can be realized through the outlet elastic part and the inlet elastic part, the fluid cavity can be sealed, water leakage between the fluid cavity and the assembling shell is avoided, the structure is simple, and the assembling operation is convenient.

Description

One-way fluid conveying structure and tooth flushing device

Technical Field

The utility model relates to a technical field of clean tooth equipment especially relates to an one-way fluid transport structure and towards tooth ware.

Background

A tooth irrigator is a common device used for cleaning teeth. The tooth flushing device has the principle that pulse water is continuously supplied to the spray head through the pump body, and teeth are cleaned by using the impact force of the water. The flow of water of the tooth flushing device needs to be one-way, so a one-way valve is arranged in a pump body of the tooth flushing device, and the one-way valve is usually required to be respectively and independently arranged at a water inlet and a water outlet of the pump body so that the water can enter the pump body in one way and then is conveyed to a spray head in one way by the pump body; and a sealing structure between the one-way valve and the infusion channel of the pump body is required to be arranged, so that the structure of the machine body is complicated, the assembly is complex, and the miniaturization design of the machine body is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an one-way fluid transport structure and towards tooth ware to solve the long redundant miscellaneous technical problem who is unfavorable for the miniaturized design of organism of the towards tooth ware organism structure that exists among the prior art.

The utility model provides a one-way fluid conveying structure, which comprises an assembly shell and a valve body, wherein the assembly shell is provided with a fluid inlet, and the valve body is arranged in the assembly shell;

the valve body is provided with an inlet elastic part and an outlet elastic part, a fluid cavity is arranged in the valve body, the inlet elastic part is arranged on the inner side of the assembly shell and is positioned between the fluid inlet and the inlet of the fluid cavity, and the outlet elastic part is arranged at the outlet of the fluid cavity;

in a natural state, the inlet elastic part is attached and sealed with the inner wall of the assembly shell, and the outlet elastic part closes the outlet of the fluid cavity; when the pressure in the fluid cavity is reduced, the outlet elastic part closes the outlet of the fluid cavity, the inlet elastic part is elastically deformed under the action of pressure difference, so that a gap is generated between the assembly shell and the inlet elastic part, and the fluid inlet of the assembly shell is communicated with the inlet of the fluid cavity; when the pressure in the fluid cavity is increased, the inlet elastic part is attached and sealed with the inner wall of the assembling shell, and the outlet elastic part generates elastic deformation under the action of pressure difference to open the outlet of the fluid cavity.

Further, the outlet elastic part is connected with the valve body in a sealing mode, and a crack is arranged on the outlet elastic part;

in a natural state, the split is closed, and the outlet of the fluid cavity is closed; when the pressure of the fluid cavity is increased, the outlet elastic part deviates from the fluid cavity and is elastically deformed, so that the split is opened, and the outlet of the fluid cavity is opened.

Furthermore, the inlet and the outlet of the fluid cavity are arranged at intervals, the outlet elastic part is arranged in a hollow conical shape, the tip of the outlet elastic part is far away from the inlet of the fluid cavity, the split is arranged on the tip of the outlet elastic part, and the circumferential side face of the outlet elastic part is connected with the valve body in a sealing mode.

Further, the inner wall surface of the valve body is an arc-shaped surface;

the outlet elastic part comprises two elastic pieces which are oppositely arranged, and the contour line of each elastic piece comprises an arc-shaped edge of which a straight line edge is connected with two ends of the straight line edge;

the straight edges of the two elastic pieces are mutually connected, the arc edges of the two elastic pieces are gradually far away from each other, so that the two elastic pieces are connected into a V-shaped arrangement, and the split is arranged between the straight edges of the two elastic pieces; the arc edges of the two elastic sheets are attached to the inner wall of the valve body in a sealing connection mode.

Furthermore, the inlet elastic part is connected to one end of the valve body, which corresponds to the inlet of the fluid cavity, and when the pressure in the fluid cavity is reduced, one end of the inlet elastic part, which is far away from the valve body, moves inwards away from the assembling shell, so that a gap is formed between the inlet elastic part and the assembling shell.

Furthermore, an annular slot is formed in one end, corresponding to the inlet of the fluid cavity, of the assembly shell;

import elastic component is the annular setting, import elastic component pegs graft in the annular slot, import elastic component with the equal interval setting of inside wall and the diapire of annular slot, under natural state, import elastic component with the laminating of the lateral wall of annular slot, import elastic component can be relative the lateral wall inwards takes place elastic deformation.

Furthermore, the valve body is arranged in a cylindrical shape, one end, far away from the inlet elastic part, of the valve body is provided with a limiting part, and the limiting part is sleeved on one end, far away from the annular slot, of the assembly shell.

Furthermore, the one-way fluid conveying structure further comprises a driving mechanism and an acting piece, the acting piece is communicated with the fluid cavity, the driving mechanism is connected with the acting piece, and the driving mechanism drives the acting piece to act so as to change the pressure in the fluid cavity.

Furthermore, the valve body, the outlet elastic part and the inlet elastic part are made of the same material and are integrally formed.

The utility model provides a tooth flushing device, which comprises the utility model provides an one-way fluid conveying structure.

The utility model provides a one-way fluid conveying structure, which comprises an assembly shell and a valve body, wherein the assembly shell is provided with a fluid inlet, and the valve body is arranged in the assembly shell; the valve body is provided with an inlet elastic part and an outlet elastic part, a fluid cavity is arranged in the valve body, the inlet elastic part is arranged on the inner side of the assembling shell and is positioned between the fluid inlet and the inlet of the fluid cavity, and the outlet elastic part is arranged at the outlet of the fluid cavity; in a natural state, the inlet elastic part is attached and sealed with the inner wall of the assembly shell, and the outlet elastic part closes the outlet of the fluid cavity; when the pressure in the fluid cavity is reduced, the outlet elastic part closes the outlet of the fluid cavity, the inlet elastic part is elastically deformed under the action of pressure difference, so that a gap is generated between the assembling shell and the inlet elastic part, and the fluid inlet of the assembling shell is communicated with the inlet of the fluid cavity; when the pressure in the fluid cavity is increased, the inlet elastic part is attached and sealed with the inner wall of the assembly shell, and the outlet elastic part generates elastic deformation under the action of pressure difference to open the outlet of the fluid cavity. The utility model discloses one-way fluid conveying structure can realize the one-way water inlet and one-way water outlet of pulse form, and one-way fluid conveying structure realizes the sealing of fluid chamber through export elasticity portion and import elasticity portion, need not additionally set up seal structure, can realize the sealing of fluid chamber, avoids appearing leaking between fluid chamber and the assembly shell, has simplified the structure, is favorable to using the miniaturized design of the organism of this one-way fluid conveying structure; when the valve body is assembled, the valve body is assembled into the assembling shell, and the assembling operation is convenient. Take the one-way fluid conveying structure of the utility model applied to the tooth rinsing device as an example, and the one-way fluid conveying structure is used as the water inlet and outlet structure of the tooth rinsing device. When the pressure in the fluid cavity is reduced, namely the pressure in the fluid cavity is smaller than the pressure of a water inlet pipe of the tooth flushing device, the outlet elastic part closes the outlet of the fluid cavity, the inlet elastic part generates elastic deformation under the action of the internal and external pressure difference, so that water enters the fluid cavity through a fluid inlet of the assembly shell and a gap between the assembly shell and the inlet elastic part, and the fluid cavity enters the water; when the pressure in the fluid cavity is increased, namely the pressure in the fluid cavity is greater than the pressure of a nozzle pipe of the tooth flushing device, the inlet elastic part is attached to the inner wall of the assembling shell in a sealing manner to prevent water from entering the fluid cavity, the outlet elastic part opens an outlet of the fluid cavity under the action of pressure difference, and the nozzle sprays water; the intermittent increase and decrease of the pressure in the fluid cavity are controlled, so that pulse water inlet and outlet can be realized, and the requirement of the tooth flusher for cleaning teeth by pulse unidirectional water inlet and outlet is met.

The utility model provides a tooth flushing device which comprises the utility model provides an one-way fluid conveying structure. The utility model discloses it is right to dash the beneficial effect accessible of tooth ware the utility model provides an one-way fluid transport structure's beneficial effect's description learns, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a water inlet and outlet structure provided in an embodiment of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

fig. 5 is a schematic view of a tooth rinsing device provided by an embodiment of the present invention;

fig. 6 is a partial cross-sectional view of fig. 5.

Icon: 100-assembling a shell; 110-a fluid inlet; 120-a ring slot; 121-an inner sidewall; 122-an outer sidewall; 123-a bottom wall; 200-a valve body; 210-inlet elastic; 220-outlet elastic; 221-breach; 222-an elastic sheet; 223-arc-shaped edges; 224-straight edge; 230-a fluid cavity; 240-a limiting part; 310-an electromagnet; 320-a first splint; 330-a second splint; 340-cache capsule; 350-a return spring; 400-nozzle.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in fig. 1 to 6, the present embodiment provides a one-way fluid delivery structure, which includes a mounting case 100 and a valve body 200, wherein the mounting case 100 is provided with a fluid inlet 110, and the valve body 200 is mounted in the mounting case 100. The valve body 200 is provided with an inlet spring part 210 and an outlet spring part 220, the valve body 200 is provided with a fluid chamber 230 therein, the inlet spring part 210 is disposed inside the assembly housing 100 between the fluid inlet 110 and the inlet of the fluid chamber 230, and the outlet spring part 220 is disposed at the outlet of the fluid chamber 230. In a natural state, the inlet elastic part 210 is attached to and sealed with the inner wall of the assembly housing 100, and the outlet elastic part 220 closes the outlet of the fluid chamber 230; when the pressure in the fluid chamber 230 is reduced, the outlet elastic part 220 closes the outlet of the fluid chamber 230, the inlet elastic part 210 is elastically deformed, so that a gap is generated between the assembly housing 100 and the inlet elastic part 210, and the fluid inlet 110 of the assembly housing 100 communicates with the inlet of the fluid chamber 230; when the pressure in the fluid chamber 230 increases, the inlet elastic part 210 is sealed against the inner wall of the assembly case 100, and the outlet elastic part 220 is elastically deformed to open the outlet of the fluid chamber 230.

The pressure change in the fluid chamber 230 of the unidirectional fluid transfer structure of the present embodiment is relative to a natural state, that is, relative to a state in which the internal pressure of the fluid chamber 230, the pressure of the fluid inlet side, and the pressure of the fluid outlet side can simultaneously satisfy the requirement that the inlet elastic part 210 is attached to the inner wall of the assembly housing 100, and the outlet elastic part 220 closes the outlet of the fluid chamber 230. The specific value of the pressure of the fluid chamber 230 is increased or decreased so that the outlet elastic portion 220 is elastically deformed by the pressure difference and the inlet elastic portion 210 is elastically deformed by the pressure difference.

The unidirectional fluid conveying structure of the embodiment can realize unidirectional water inlet and unidirectional water outlet in a pulse form, the unidirectional fluid conveying structure realizes the sealing of the fluid cavity 230 through the outlet elastic part 220 and the inlet elastic part 210, the sealing of the fluid cavity 230 can be realized without additionally arranging a sealing structure, the water leakage between the fluid cavity 230 and the assembly shell 100 is avoided, the structure is simplified, and the miniaturization design of a machine body applying the unidirectional fluid conveying structure is facilitated; during assembly, the valve body 200 only needs to be assembled into the assembly housing 100, and the assembly operation is convenient.

The embodiment is taken as an example that the one-way fluid conveying structure is applied to a tooth flushing device. When the pressure inside the fluid chamber 230 is reduced, that is, the pressure inside the fluid chamber 230 is lower than the pressure of the water inlet pipe of the dental irrigator, and reaches a certain value, the outlet elastic part 220 maintains a state of closing the outlet of the fluid chamber 230, the inlet elastic part 210 is elastically deformed under the action of the difference between the internal pressure and the external pressure, so that water enters the fluid chamber 230 through the fluid inlet 110 of the fitting housing 100, the gap between the fitting housing 100 and the inlet elastic part 210, and the fluid chamber 230 enters the water. When the pressure in the fluid chamber 230 increases, that is, the pressure in the fluid chamber 230 is greater than the pressure of the nozzle 400 of the tooth-rinsing device, and reaches a certain value, the inlet elastic part 210 and the inner wall of the assembly housing 100 are attached and sealed to prevent water from entering the fluid chamber 230, the outlet elastic part 220 opens the outlet of the fluid chamber 230 under the action of the pressure difference, and the nozzle 400 sprays water; the intermittent increase and decrease of the pressure in the fluid cavity 230 can realize pulse water inlet and outlet, and the requirement of the tooth flusher for cleaning teeth by pulse unidirectional water inlet and outlet can be met. The outlet elastic part 220 and the inlet elastic part 210 are elastically deformed by the pressure difference, so that the outlet elastic part 220 and the inlet elastic part 210 can maintain a natural state after the pressure difference is removed.

The one-way fluid conveying structure of this embodiment further includes a driving mechanism and an acting member, the acting member may be a piston disposed in the fluid chamber 230, the driving mechanism may be a linear electric cylinder, and the linear electric cylinder drives the piston to move so as to change the volume of the fluid chamber 230, thereby realizing the intermittent change of the pressure in the fluid chamber 230. Specifically, as shown in fig. 6, in the present embodiment, the driving mechanism includes an electromagnet 310, a first clamping plate 320 and a second clamping plate 330, the acting element is a buffer bladder 340, and the buffer bladder 340 is communicated with the fluid chamber 230. The caching bladder 340 is located between the first splint 320 and the second splint 330, and opposite sidewalls of the caching bladder 340 are connected to the first splint 320 and the second splint 330, respectively. The first clamping plate 320 is provided with a first permanent magnet, the second clamping plate 330 is provided with a second permanent magnet, the first clamping plate 320 and the second clamping plate 330 are respectively positioned at two sides of two opposite polarity ends of the electromagnet 310, and the electromagnet 310 is used for applying magnetic force to the first permanent magnet and the second permanent magnet at the same time so that the first clamping plate 320 and the second clamping plate 330 move in an opposite direction or in an opposite direction.

By changing the direction of the current passing through the electromagnet 310, the polarity of the two polarity ends of the electromagnet 310 can be alternately changed, so that the electromagnet 310 simultaneously attracts or repels the first magnetic attraction portion and the second magnetic attraction portion, and the distance between the first clamping plate 320 and the second clamping plate 330 is reduced or increased. The cushioning bladder 340 may be crushed and deformed by the first splint 320 and the second splint 330 when the distance between the first splint 320 and the second splint 330 is decreased, and the cushioning bladder 340 may be pulled and restored to its original shape by the first splint 320 and the second splint 330 when the distance between the first splint 320 and the second splint 330 is increased. The volume of the hollow inside of the buffer bladder 340 can be changed by pressing and releasing the buffer bladder 340, and further the pressure of the hollow inside of the buffer bladder 340 can be changed, because the buffer bladder 340 is communicated with the fluid chamber 230, therefore, the pressure inside the fluid chamber 230 is changed along with the change of the pressure inside the buffer bladder 340.

A return spring 350 is connected between the first clamping plate 320 and the second clamping plate 330, the return spring 350 having a tendency to move the first clamping plate 320 and the second clamping plate 330 in a direction away from each other. The speed of resetting the caching capsule body 340 is increased, and meanwhile, the caching capsule body 340 can be prevented from being excessively extruded.

The outlet elastic part 220 of the one-way fluid conveying structure of the embodiment is hermetically connected with the valve body 200, and a split 221 is arranged on the outlet elastic part 220; in a natural state, the slit 221 is closed, and the outlet of the fluid chamber 230 is closed; when the pressure in the fluid chamber 230 increases, the outlet flexible portion 220 is elastically deformed away from the fluid chamber 230 to open the slit 221 and open the outlet of the fluid chamber 230.

The outlet elastic portion 220 may be made of rubber, when the slit 221 has no pressure difference, the slit 221 can be closed under the action of its own strength, and when the pressure inside the fluid chamber 230 is greater than the pressure outside the outlet elastic portion 220 due to the pressure difference between inside and outside, the outlet elastic portion 220 opens the slit 221 under the action of the pressure. The slit 221 corresponds to an outlet of the fluid chamber 230, and the outlet elastic part 220 has a simple structure and is easy to process.

The inlet and the outlet of the fluid chamber 230 are oppositely arranged at intervals, the outlet elastic part 220 is arranged in a hollow conical shape, the tip of the outlet elastic part 220 is arranged far away from the inlet of the fluid chamber 230, the split 221 is arranged at the tip of the outlet elastic part 220, and the circumferential side surface of the outlet elastic part 220 is hermetically connected with the valve body 200.

Specifically, as shown in fig. 4, the outlet elastic part 220 is positioned at an upper end of the fluid chamber 230, an inlet of fluid is disposed at a lower end of the fluid chamber 230, a tip of the outlet elastic part 220 is positioned at a top, and the slit 221 is disposed at the top.

It can be understood that the outlet elastic part 220 having a hollow tapered shape allows the length of the outlet elastic part 220 to be extended, the strength of the outlet elastic part 220 to be enhanced, and when the pressure in the fluid chamber 230 is lower than the pressure at the nozzle 400, the top of the outlet elastic part 220 is gathered inward, and the corresponding outlet elastic part 220 can better maintain the closed state of the slit 221.

The inner wall surface of the valve body 200 of the unidirectional fluid delivery structure of the present embodiment is an arc surface, and may be a cylindrical surface, that is, the sidewall of the fluid chamber 230 is cylindrical. In order to further enhance the strength of the outlet elastic part 220 of the valve body 200, the outlet elastic part 220 of the present embodiment includes two elastic pieces 222 disposed opposite to each other, and the contour of the elastic pieces 222 includes a straight edge 224 and an arc-shaped edge 223 connected to both ends of the straight edge 224, and the arc-shaped edge 223 forms a side edge of the elastic piece 222. The straight edges 224 of the two elastic pieces 222 are connected with each other, and the arc-shaped edges 223 of the two elastic pieces 222 are gradually separated from each other, so that the two elastic pieces 222 are connected in a "V" shape, and the slit 221 is arranged between the straight edges 224 of the two elastic pieces 222; the arc edges 223 of the two elastic sheets 222 are in close sealing connection with the inner wall surface of the valve body 200.

In this embodiment, the contour line of the top end of the elastic piece is a straight edge 224, the bottom end of the elastic piece 222 is also a substantially straight edge, the side edge of the elastic piece is an arc-shaped edge 223, the straight edge at the lower end is also in sealing contact with the inner wall surface of the valve body 200 at this time, and the straight edge at the lower end may also be an arc-shaped edge having the same radian as the arc-shaped edge 223.

It can be understood that the arc-shaped edge 223 of the elastic sheet 222 can be better attached to the arc-shaped surface of the valve body 200, and the bottom edge and the side edge of the elastic sheet 222 are both connected to the inner wall surface of the valve body 200, so that the fixing strength and the stability of the elastic sheet 222 are improved.

The inlet elastic portion 210 of the present embodiment will be described in detail below.

The inlet spring portion 210 is connected to an end of the valve body 200 corresponding to an inlet of the fluid chamber 230, and when the pressure in the fluid chamber 230 is reduced, an end of the inlet spring portion 210 away from the valve body 200 is moved inward away from the fitting housing 100, so that a gap is generated between the inlet spring portion 210 and the fitting housing 100.

As shown in fig. 3 and 4, one end of the assembly case 100 corresponding to the inlet of the fluid chamber 230, i.e., the lower end of the fluid chamber 230, is provided with an annular insertion groove 120; import elastic component 210 is the annular setting, and import elastic component 210 pegs graft in annular slot 120, and import elastic component 210 sets up with annular slot 120's equal interval of inside wall 121 and diapire 123 to form into water clearance, under natural state, import elastic component 210 and annular slot 120's lateral wall 122 laminating, and import elastic component 210 can be relative the inside elastic deformation that takes place of lateral wall.

The fluid inlet 110 of the fitting case 100 is disposed on the outer sidewall 122 of the annular insertion groove 120 and corresponds to the inlet elastic part 210, and the inlet elastic part 210 can cover the fluid inlet 110 of the fitting case 100. When the pressure in the fluid chamber 230 is reduced, the fluid inlet 110 is forced by the fluid with a larger pressure to move the inlet elastic part 210 inward, a gap is formed between the inlet elastic part 210 and the outer sidewall 122 of the annular insertion groove 120, and the water in the fluid inlet 110 enters the bottom of the annular insertion groove 120 through the gap between the inlet elastic part 210 and the inner sidewall 121 of the annular insertion groove 120 and then enters the fluid chamber 230.

Further, the valve body 200 of the present embodiment is substantially cylindrical, the assembling shell 100 is cylindrical, one end of the valve body 200 away from the inlet elastic portion 210 is provided with a limiting portion 240, and the limiting portion 240 is sleeved on one end of the assembling shell 100 away from the annular slot 120.

As shown in fig. 3 and 4, the upper end of the valve body 200 extends outward to form a limiting portion 240, a sleeving ring is formed between the limiting portion 240 and the valve body 200, and the upper end of the assembling shell 100 is interference-assembled in the sleeving ring, so that the assembling of the assembling shell 100 and the valve body 200 can be realized, and the function of sealing the valve body 200 and the assembling shell 100 can also be realized.

It can be understood that the valve body 200 can be stably coupled to the mounting case 100 by the stopper portion 240, and the mounting operation is convenient.

Preferably, the valve body 200, the outlet elastic portion 220 and the inlet elastic portion 210 of the present embodiment are made of the same material, and the valve body 200, the outlet elastic portion 220 and the inlet elastic portion 210 are integrally molded.

The variable ability of the valve body 200 should be smaller than the variable ability of the inlet elastic part 210 and the outlet elastic part 220 to ensure the stability of the valve body 200, and particularly, the thickness of the inlet elastic part 210 is smaller than that of the valve body 200, and the thickness of the outlet elastic part 220 is smaller than that of the valve body 200. The valve body 200, the outlet elastic portion 220 and the inlet elastic portion 210 may be made of rubber, and the limiting portion 240 may be made of the same material as the valve body 200 and integrally formed therewith.

The embodiment also provides a tooth flushing device which comprises the one-way fluid conveying structure provided by the embodiment.

Specifically, the fluid inlet 110 of the one-way fluid delivery structure is connected with a water inlet pipe, and the fluid outlet of the one-way fluid delivery structure is connected with a nozzle 400; other constructions of the dental irrigator may employ conventional techniques.

The tooth irrigator has the same beneficial effects as the one-way fluid conveying structure provided by the embodiment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A one-way fluid delivery structure, comprising an assembly housing (100) and a valve body (200), wherein the assembly housing (100) is provided with a fluid inlet (110), and the valve body (200) is installed in the assembly housing (100);

an inlet elastic part (210) and an outlet elastic part (220) are arranged on the valve body (200), a fluid cavity (230) is arranged in the valve body (200), the inlet elastic part (210) is arranged on the inner side of the assembling shell (100) and is positioned between the fluid inlet (110) and the inlet of the fluid cavity (230), and the outlet elastic part (220) is arranged at the outlet of the fluid cavity (230);

in a natural state, the inlet elastic part (210) is in fit sealing with the inner wall of the assembly shell (100), and the outlet elastic part (220) closes the outlet of the fluid cavity (230); when the pressure in the fluid cavity (230) is reduced, the outlet elastic part (220) closes the outlet of the fluid cavity (230), the inlet elastic part (210) is elastically deformed under the action of the pressure difference, a gap is generated between the assembly shell (100) and the inlet elastic part (210), and the fluid inlet (110) of the assembly shell (100) is communicated with the inlet of the fluid cavity (230); when the pressure in the fluid cavity (230) is increased, the inlet elastic part (210) is attached and sealed with the inner wall of the assembly shell (100), and the outlet elastic part (220) is elastically deformed under the action of pressure difference to open the outlet of the fluid cavity (230).

2. The unidirectional fluid transfer structure of claim 1, wherein the outlet elastic portion (220) is in sealing connection with the valve body (200), and a split (221) is provided on the outlet elastic portion (220);

in a natural state, the slit (221) is closed, and the outlet of the fluid cavity (230) is closed; when the pressure in the fluid chamber (230) increases, the outlet elastic part (220) is elastically deformed away from the fluid chamber (230) to open the slit (221), and the outlet of the fluid chamber (230) is opened.

3. The unidirectional fluid transfer structure of claim 2, wherein the inlet and the outlet of the fluid chamber (230) are oppositely spaced, the outlet elastic part (220) is arranged in a hollow cone shape, the tip of the outlet elastic part (220) is arranged far away from the inlet of the fluid chamber (230), the split (221) is arranged on the tip of the outlet elastic part (220), and the circumferential side of the outlet elastic part (220) is connected with the valve body (200) in a sealing way.

4. The unidirectional fluid transfer structure of claim 3, wherein the inner wall surface of the valve body (200) is an arc-shaped surface;

the outlet elastic part (220) comprises two elastic pieces (222) which are oppositely arranged, and the contour line of each elastic piece (222) comprises a straight line edge (224) and arc-shaped edges (223) connected to the two ends of the straight line edge (224);

the straight edges (224) of the two elastic pieces (222) are connected with each other, the arc-shaped edges (223) of the two elastic pieces (222) are gradually separated from each other so that the two elastic pieces (222) are connected into a V-shaped arrangement, and the gap (221) is arranged between the straight edges (224) of the two elastic pieces (222); the arc edges (223) of the two elastic sheets (222) are attached to the inner wall of the valve body (200) in a sealing connection mode.

5. The unidirectional fluid transfer structure of any one of claims 1 to 4, wherein the inlet elastic portion (210) is connected to an end of the valve body (200) corresponding to an inlet of the fluid chamber (230), and when the pressure in the fluid chamber (230) is reduced, an end of the inlet elastic portion (210) away from the valve body (200) moves inward away from the assembly housing (100) to generate a gap between the inlet elastic portion (210) and the assembly housing (100).

6. The unidirectional fluid transfer structure of claim 5, wherein an end of said fitting housing (100) corresponding to an inlet of said fluid chamber (230) is provided with an annular insertion groove (120);

import elastic component (210) are the annular setting, it is in to peg graft import elastic component (210) in annular slot (120), import elastic component (210) with inside wall (121) and the equal interval setting of diapire (123) of annular slot (120), under natural state, import elastic component (210) with lateral wall (122) the laminating of annular slot (120), import elastic component (210) can be relative lateral wall (122) is inside takes place elastic deformation.

7. The unidirectional fluid delivery structure of claim 6, wherein the valve body (200) is cylindrical, a limiting portion (240) is disposed at an end of the valve body (200) away from the inlet elastic portion (210), and the limiting portion (240) is sleeved on an end of the assembly housing (100) away from the annular slot (120).

8. The unidirectional fluid transfer structure of any one of claims 1-4, further comprising an actuating mechanism and an acting element, wherein the acting element is in communication with the fluid chamber (230), and wherein the actuating mechanism is connected to the acting element, and wherein the actuating mechanism actuates the acting element to change the pressure within the fluid chamber (230).

9. The unidirectional fluid transfer structure of any one of claims 1 to 4, wherein the valve body (200), the outlet flexible portion (220) and the inlet flexible portion (210) are made of the same material and are integrally formed.

10. A dental irrigator comprising a one-way fluid delivery structure according to any one of claims 1 to 9.

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