CN218152910U

CN218152910U - Anti-siphon joint

Info

Publication number: CN218152910U
Application number: CN202222348894.6U
Authority: CN
Inventors: 盛万聪
Original assignee: Zhejiang Tashan Fluid Control Technology Co ltd
Current assignee: Zhejiang Tashan Fluid Control Technology Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-12-27
Anticipated expiration: 2032-09-05

Abstract

The utility model provides an anti-siphon joint belongs to fluid intelligence and controls technical field. It has solved the complicated scheduling problem of current siphon joint design. This prevent siphon connects including being tube-shape and hollow body, the upper end of body has last connecting portion, the lower extreme of body has lower connecting portion, the outer wall of body radially runs through to have the exhaust hole that is located between connecting portion and the lower connecting portion, the inner wall of body has radially inwards protruding and will exhaust the installation department including the inner cladding of hole, be water channel between installation department and the body inner wall, the top of installation department has the installation blind hole of axial extension, it has the gas clearance to cross between case and the installation blind hole to insert in the installation blind hole, the case inlays and is equipped with the sealing washer, under the dead weight of case, the sealing washer seals in the drill way of installation blind hole, the installation department has the gas passing hole that communicates gas clearance and exhaust hole. The utility model has the advantages of simple structure, smooth water outlet, long service life and the like.

Description

Anti-siphon joint

Technical Field

The utility model belongs to the technical field of the fluid intelligence is controlled, a valve accessory is related to, in particular to prevent siphon and connect.

Background

The existing joint is easy to have siphonage in the using process, has the problem of water backflow, and can cause the collapse of a pipeline in serious conditions. In view of the above problems, an anti-siphon water inlet pipe joint [ application No.: 201620636421.8; authorization notice number: CN205824432U ], it includes the water inlet pipe head body, the water inlet pipe head body includes tap joint body and body joint, the body joint cup joints on tap joint body, the inside of tap joint body and body joint junction is provided with anti-siphon device, anti-siphon device includes waterproof gasket, steel ball and spring, be provided with the hole of steel ball adaptation on the waterproof gasket, waterproof gasket presses and establishes in pressing the hole inside and opposite with the inlet opening, the steel ball supports and presses in the hole of waterproof gasket, the one end of spring supports and presses with the steel ball, the other end is pressed and is established on the crimping ring platform of body joint inside.

Foretell prevent siphon water inlet pipe joint by spring and steel ball cooperation, play the non return, prevent the siphon function, but it connects the combination by tap connector body and body, and the structure is simple inadequately, when water pressure was great moreover, can make the steel ball be close to or support and press in the apopore, leads to going out water not smooth, even unable play water, the spring is long-time in the aquatic work in addition, can appear tired or the condition of inefficacy, life is not long.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, go out that water is smooth and easy and long service life's prevent siphon connects.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an anti-siphon connects, is including being tube-shape and hollow body, the upper end of body has connecting portion, and the lower extreme of body has lower connecting portion, its characterized in that, the outer wall of body radially run through and have the exhaust hole that is located between connecting portion and the lower connecting portion, the inner wall of body has radially inwards protruding and will exhaust the installation department including the inner cladding of hole, be water channel between installation department and the body inner wall, the top of installation department installation blind hole that has the axial extension, it has the gas clearance to cross between case and the installation blind hole to insert in the installation blind hole, the case inlay and be equipped with the sealing washer, under the dead weight of case, the sealing washer seal in the drill way of installation blind hole, the installation department the gas hole that crosses of intercommunication gas clearance and exhaust hole.

In foretell siphon connects, the quantity of exhaust hole be two and the symmetry sets up, the both ends of installation department will correspond the inner cladding in exhaust hole respectively including, the installation department both ends are inside all to have the gas pocket.

In foretell siphon connects, body and installation department formula injection moulding structure as an organic whole, the installation department be the arcwall face in the top surface of installation blind hole both sides.

In the anti-siphon joint, the outer end of the valve core is provided with a convex part which protrudes outwards in the radial direction and covers the sealing ring, and a plurality of cutting surfaces are uniformly distributed on the outer wall of the inner end of the valve core in the circumferential direction.

In the anti-siphon joint, the inner edge and the outer edge of the orifice of the mounting blind hole are both chamfered.

In the above anti-siphon joint, the upper connecting portion is an external thread on the outer wall of the upper end of the body, and the lower connecting portion is an external thread on the outer wall of the lower end of the body.

In the anti-siphon joint, the inner wall of the lower end of the body is provided with an expansion port which is expanded outwards and is a conical surface, and an O-shaped ring is arranged in the expansion port.

In the anti-siphon joint, the outer wall of the middle part of the body is provided with two symmetrically arranged planes.

Compared with the prior art, this prevent siphon connects simple structure, it is smooth and easy to pass in and out water, and noise reduction effect is good, and structural strength is high moreover, long service life.

Drawings

Fig. 1 is a perspective view of the anti-siphon joint.

Fig. 2 is a perspective view of the anti-siphon joint at another angle.

Fig. 3 is a plan view showing the structure of the anti-siphon joint.

Fig. 4 isbase:Sub>A structural sectional view of the sectionbase:Sub>A-base:Sub>A in fig. 3.

Fig. 5 is a structural sectional view of a section B-B in fig. 3.

Fig. 6 is a perspective view of the valve body in the anti-siphon joint.

In the figure, 1, a body; 2. an upper connecting part; 3. a lower connecting portion; 4. an exhaust hole; 5. an installation part; 6. a water passage; 7. installing blind holes; 8. a valve core; 9. a gas passing gap; 10. a seal ring; 11. air passing holes; 12. an arc-shaped surface; 13. a projection; 14. cutting the surface; 15. chamfering; 16. expanding the mouth; 17. an O-shaped ring; 18. and (4) a plane.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3, 4, 5 and 6, the anti-siphon joint comprises a cylindrical and hollow body 1, an upper connecting part 2 is arranged at the upper end of the body 1, a lower connecting part 3 is arranged at the lower end of the body 1, an exhaust hole 4 positioned between the upper connecting part 2 and the lower connecting part 3 radially penetrates through the outer wall of the body 1, an installation part 5 which is radially inward convex and covers the inner end of the exhaust hole 4 is arranged on the inner wall of the body 1, a water passing channel 6 is arranged between the installation part 5 and the inner wall of the body 1, an installation blind hole 7 which axially extends is arranged at the top end of the installation part 5, a valve core 8 is inserted into the installation blind hole 7, an air passing gap 9 is arranged between the valve core 8 and the installation blind hole 7, a sealing ring 10 is embedded in the valve core 8, under the self weight of the valve core 8, the sealing ring 10 is sealed in the hole of the installation blind hole 7, and the installation part 5 is provided with an air passing hole 11 which is communicated with the air passing gap 9 and the exhaust hole 4.

The upper connecting part 2 of the anti-siphon joint is used for connecting a water inlet valve or a water faucet, and the lower connecting part 3 is used for connecting the water faucet or a pipeline. When the water-saving valve is used, water flow enters from the upper end of the body 1, flows through the water passage 6 and then flows out from the lower end of the body 1, and the pressure of the water flow is matched with the self weight of the valve core 8, so that the sealing ring 10 is always sealed in the orifice of the mounting blind hole 7 in the water inlet process, and water cannot enter the mounting blind hole 7, so that leakage is avoided; when stopping intaking, rivers return and gush in the pipeline for gaseous 1 upper end department of body is entered into from body 1 lower extreme, water channel 6 in the pipeline, and gaseous impact case 8 overcomes case 8's dead weight, makes case 8 axial rise, and gaseous entering installation blind hole 7 gets into exhaust hole 4 from air gap 9, exhausts, has destroyed the required negative pressure condition of siphonage, thereby plays anti-siphon effect.

The anti-siphon joint is simple in structure, the valve core 8 is inserted into the mounting blind hole 7 during assembly, and the assembly is convenient; when intaking, water channel 6 has guaranteed the water capacity, and it is smooth and easy to intake, and direct 1 lower extreme of body goes out water, goes out water smoothly, leans on case 8 dead weight and sealing washer 10 to realize sealed moreover, and case 8 is different from the spring, does not have fatigue strength's problem, long service life.

In detail, in this embodiment, the number of the exhaust holes 4 is two and the two exhaust holes are symmetrically arranged, the two ends of the mounting portion 5 respectively cover the inner ends of the corresponding exhaust holes 4, and the air passing holes 11 are respectively arranged inside the two ends of the mounting portion 5. Installation department 5 is equivalent to the crossbeam like this and supports in 1 inner wall of body, and overall structure intensity is high, and two exhaust holes 4 also make the exhaust smooth and easy, have improved anti-siphon effect.

Body

1 and 5 formula injection moulding structures as an organic whole of installation department, installation department 5 are arcwall face 12 in the top surface of installation blind hole 7 both sides, and it is convenient to make like this, and structural strength is high, long service life, and the area of contact of arcwall face 12 and rivers is few moreover, and the rivers of being convenient for get into water channel 6, and it is smooth and easy to go out water, and noise reduction effect is good moreover. The outer end of the valve core 8 is provided with a convex part 13 which is radially protruded outwards and covers the sealing ring 10, a plurality of cutting surfaces 14 are uniformly distributed on the outer wall of the inner end of the valve core 8 in the circumferential direction, so that the sealing ring 10 is limited and stable and cannot be separated from the valve core 8, an air gap 9 is formed between each cutting surface 14 and the inner wall of the mounting blind hole 7, and the number of the cutting surfaces 14 is three in the embodiment.

The inner edge and the outer edge of the orifice of the blind mounting hole 7 are chamfers 15, so that interference is reduced, the orifice of the blind mounting hole 7 and the sealing ring 10 have good sealing performance, and leakage is avoided. Go up connecting portion 2 and be the external screw thread that 1 upper end outer wall of body had, lower connecting portion 3 is the external screw thread that 1 lower extreme outer wall of body had, through the setting of external screw thread, connects the convenience. The lower extreme inner wall of body 1 has outside expansion and is the expansion mouth 16 of conical surface, is equipped with O type circle 17 in the expansion mouth 16, and when the lower extreme of body 1 was connected with water injection well choke or pipeline like this, O type circle 17 was sealed in expansion mouth 16, had guaranteed the leakproofness, avoided leaking. The middle outer wall of the body 1 is provided with two planes 18 which are symmetrically arranged, the two planes 18 are convenient for clamping by the calipers, and the body 1 is labor-saving and convenient to rotate.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an anti-siphon connects, is including being tube-shape and hollow body (1), the upper end of body (1) has last connecting portion (2), and the lower extreme of body (1) has lower connecting portion (3), its characterized in that, the outer wall of body (1) radially run through have be located connecting portion (2) and lower connecting portion (3) between exhaust hole (4), the inner wall of body (1) has radially inwards protruding and with exhaust hole (4) inner cladding including installation department (5), be water channel (6) between installation department (5) and body (1) inner wall, the top of installation department (5) have axially extended installation blind hole (7), it has air gap (9) to insert between installation blind hole (7) case (8) and installation blind hole (7), case (8) inlay and be equipped with sealing washer (10), under the dead weight of case (8), sealing washer (10) seal in the drill way of installation blind hole (7), installation department (5) have the air gap (9) of intercommunication air gap (4) and air vent (11).

2. The anti-siphon joint according to claim 1, characterized in that the number of the exhaust holes (4) is two and the two exhaust holes are symmetrically arranged, the two ends of the mounting part (5) respectively cover the inner ends of the corresponding exhaust holes (4), and the air passing holes (11) are arranged inside the two ends of the mounting part (5).

3. An anti-siphon joint according to claim 2, characterized in that the body (1) and the mounting portion (5) are of an integral injection moulding structure, and the top surfaces of the mounting portion (5) on both sides of the mounting blind hole (7) are arc-shaped surfaces (12).

4. An anti-siphon joint according to claim 1, 2 or 3, characterized in that the outer end of the valve core (8) is provided with a bulge (13) which is radially outwards protruded and covers the sealing ring (10), and the outer wall of the inner end of the valve core (8) is circumferentially and uniformly provided with a plurality of cutting surfaces (14).

5. An anti-siphon connection, according to claim 4, characterized in that the inner and outer edges of the opening of the blind mounting hole (7) are chamfered (15).

6. An anti-siphon joint according to claim 5, characterised in that the upper connection part (2) is an external thread provided on the outer wall of the upper end of the body (1) and the lower connection part (3) is an external thread provided on the outer wall of the lower end of the body (1).

7. An anti-siphon joint according to claim 6, characterized in that the inner wall of the lower end of the body (1) is provided with an outward-expanding and conical expansion opening (16), and an O-ring (17) is arranged in the expansion opening (16).

8. An anti-siphon connection, according to claim 7, characterized in that the central outer wall of the body (1) has two symmetrically arranged flat surfaces (18).