Backflow prevention faucet

Abstract

The utility model discloses an anti-backflow faucet, which relates to the technical field of faucets and comprises a faucet body, an anti-backflow device is fixedly mounted on the peripheral side of the end, connected with a water pipe, of the faucet body, and an anti-backflow component is clamped at the joint of the faucet body and an annular pipe. The backflow preventing assembly comprises an annular baffle, the inner wall of one side of the annular baffle is fixedly connected with a conical flow blocking ring, and the tip end of the conical flow blocking ring extends into the faucet body. According to the anti-backflow faucet, the anti-backflow device is additionally arranged between the faucet body and the water supply pipeline, the anti-backflow device comprises the annular baffle, the side face of the annular baffle is fixedly connected with the conical flow blocking ring, and the tip end of the conical flow blocking ring is inserted into the faucet body. And the generated backflow impact can reduce the impact force for impacting the water supply pipeline under the obstruction of the conical flow choking ring, so that the damage to the water supply pipeline caused by the backflow impact can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of faucet technology, specifically to a faucet that prevents backflow. Background Technology

[0002] Publication No.: CN104251323A, Title: An Anti-Backflow Faucet, which discloses: a faucet body and a handle, spout, and valve core disposed on the faucet body; the faucet body is connected to an anti-backflow device to prevent tap water from flowing back; the anti-backflow device includes an anti-backflow body composed of a hexagonal nut and a pipe; the hexagonal nut has a through hole on its side, and an anti-backflow valve core is disposed in the through hole, which is sealed by a decorative cover; the waterway of the faucet body is also connected to an ozone pipe, and a filter screen is disposed on the spout. This invention has a simple structure and can prevent residual water in the faucet from flowing back to the water source and contaminating drinking water pipes.

[0003] The aforementioned disclosure can prevent water from flowing back into the water supply source. However, during the use of the faucet, when the shut-off valve is closed, a backflow impact will occur. Since most water supply pipes are made of plastic, the long-term backflow impact, coupled with the aging of the plastic, may cause the water pipe to break or reduce its service life. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an anti-backflow faucet, which solves the problem that when the shut-off valve is closed during the use of the faucet, a backflow impact will occur. Since most water supply pipes are made of plastic, the long-term backflow impact, coupled with the aging of the plastic, may cause the water pipe to break or reduce its service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a backflow prevention faucet, comprising a faucet body and a shut-off knob rotatably connected to its periphery. A backflow prevention device is fixedly installed on the periphery of the faucet body at the connection end with the water pipe. The backflow prevention device includes a vertically arranged annular tube, the diameter of the inner cavity of the annular tube being larger than the inner diameter of the faucet body. A backflow prevention component is snapped into the connection between the faucet body and the annular tube. The backflow prevention component includes an annular baffle, and a conical flow-blocking ring is fixedly connected to the inner wall of one side of the annular baffle. The tip of the conical flow-blocking ring extends into the faucet body.

[0006] Preferably, the faucet body and the annular pipe are fixedly connected to each other by a connector, the connector including a connecting plate, the side of the connecting plate being fitted to the periphery of the annular pipe and fixedly connected by fixing bolts.

[0007] Preferably, a slot is provided on the side of the connecting plate that is in contact with the annular tube, and a sealing ring is engaged in the slot.

[0008] Preferably, the conical flow-blocking ring has a strip groove on its circumference, and the conical flow-blocking ring is specifically an elastic element made of shape memory material.

[0009] Preferably, a flow-disrupting element is rotatably connected inside the annular tube. The flow-disrupting element includes an annular mesh tube, and an arc-shaped filter screen is fixedly connected to the periphery of the annular mesh tube. Specifically, the arc-shaped filter screen is S-shaped.

[0010] Preferably, the top end of the annular tube is fixedly connected to an installation plate by a locking bolt, and the top end of the annular mesh tube is fixedly connected to a T-shaped ring block. The surface of the installation plate is provided with a T-shaped ring groove that matches the T-shaped ring block.

[0011] Beneficial effects

[0012] This utility model provides a backflow-proof faucet. Compared with the prior art, it has the following advantages:

[0013] (1) The anti-backflow faucet is equipped with an anti-backflow device between the faucet body and the water supply pipe. The anti-backflow device includes an annular baffle and a conical flow-blocking ring is fixedly connected to the side of the annular baffle. The tip of the conical flow-blocking ring is inserted into the faucet body. When the faucet body is closed, the backflow impact generated will be reduced by the conical flow-blocking ring, thereby effectively preventing backflow impact from damaging the water supply pipe.

[0014] (2) The anti-backflow faucet, by setting up a ring pipe, makes the water storage capacity in the ring pipe larger because the diameter of the inner cavity of the ring pipe is larger than the inner diameter of the faucet body and the water supply pipe during backflow impact. The water can be buffered by the ring pipe during backflow impact, which can further reduce the damage to the water supply pipe caused by backflow impact.

[0015] (3) The anti-backflow faucet, by setting up a flow-disrupting element, can turbulent the water flow with a uniform flow direction when the water flows through the flow-disrupting element, thereby avoiding water flow impact damage to the inner cavity of the annular pipe. Attached Figure Description

[0016] Figure 1 This is a left-side view of the overall structure of this utility model;

[0017] Figure 2 This is a right-side view of the overall structure of this utility model;

[0018] Figure 3 This is an exploded view of the connection structure of the faucet body and the anti-backflow device of this utility model;

[0019] Figure 4 This is a schematic diagram of the anti-backflow component structure of this utility model;

[0020] Figure 5 This is an exploded view of the connection structure of the annular pipe and the turbulence-disrupting component of this utility model;

[0021] Figure 6 This is an exploded view of the connection structure of the turbulence component of this utility model.

[0022] In the diagram: 1. Faucet body; 11. Shut-off knob; 2. Anti-backflow device; 21. Ring pipe; 211. Slot; 22. Anti-backflow component; 221. Ring baffle; 222. Conical flow-blocking ring; 223. Strip groove; 3. Connector; 31. Connecting plate; 311. Sealing ring; 4. Baffle; 41. Ring mesh pipe; 411. T-shaped ring block; 42. Mounting plate; 43. Arc-shaped filter screen. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a backflow prevention faucet, including a faucet body 1 and a shut-off knob 11 rotatably connected to its periphery. A backflow prevention device 2 is fixedly installed on the periphery of the faucet body 1 and the water pipe connection end. The backflow prevention device 2 includes a vertically arranged annular tube 21. The diameter of the inner cavity of the annular tube 21 is larger than the inner diameter of the faucet body 1. A backflow prevention component 22 is snapped at the connection between the faucet body 1 and the annular tube 21. The backflow prevention component 22 includes an annular baffle 221. A conical flow-blocking ring 222 is fixedly connected to the inner wall of one side of the annular baffle 221. The tip of the conical flow-blocking ring 222 extends into the faucet body 1.

[0025] Specifically, the faucet body 1 and the shut-off knob 11 rotatably connected to its periphery are both existing technologies. The anti-backflow device 2 can reduce the impact of water backflow on the inner wall of the water supply pipe. In use, when backflow impact occurs, the backflowing water will contact the conical flow-blocking ring 222. When the water flow impact is small, the conical flow-blocking ring 222 can block the flow rate of water during backflow impact. When the water flow impact is large, the water flow drives the conical flow-blocking ring 222 to deform and close, which can directly seal the pipe, thereby effectively avoiding backflow impact.

[0026] The faucet body 1 and the annular pipe 21 are fixedly connected to each other by a connector 3. The connector 3 includes a connecting plate 31, the side of which is attached to the periphery of the annular pipe 21 and fixedly connected by a fixing bolt.

[0027] Specifically, the side of the connecting plate 31 is fitted to the periphery of the annular tube 21 and fixedly connected by fixing bolts, so that when the conical flow-blocking ring 222 is damaged or needs maintenance during long-term use, it can be easily disassembled and removed.

[0028] Both the connecting plate 31 and the annular tube 21 have a slot 211 on the side where they fit together, and a sealing ring 311 is engaged in the slot 211.

[0029] Specifically, the sealing ring 311 is snapped into the slot 211 to seal the connection between the connecting plate 31 and the annular tube 21.

[0030] The conical flow-blocking ring 222 has a strip groove 223 on its circumference. The conical flow-blocking ring 222 is specifically an elastic element made of shape memory material.

[0031] Specifically, the opening of the strip groove 223 allows the conical flow-blocking ring 222 to deform according to the flow velocity of the water. The deformation during water inflow can increase the flow velocity of the water, and the deformation during backflow impact can increase the flow-blocking efficiency.

[0032] A flow-disrupting element 4 is rotatably connected inside the annular tube 21. The flow-disrupting element 4 includes an annular mesh tube 41. An arc-shaped filter screen 43 is fixedly connected to the periphery of the annular mesh tube 41. Specifically, the arc-shaped filter screen 43 is S-shaped.

[0033] Specifically, the annular mesh tube 41 is filled with activated carbon, which can adsorb and filter impurities in the flowing water and eliminate odors in tap water. The water flow impacts the arc-shaped filter 43, which can drive the arc-shaped filter 43 to rotate. The arc-shaped filter 43 turbulents the water flow and reduces the impact of the water flow on the faucet body 1.

[0034] The top end of the annular tube 21 is fixedly connected to the mounting plate 42 by locking bolts, and the top end of the annular mesh tube 41 is fixedly connected to the T-shaped ring block 411. The surface of the mounting plate 42 is provided with a T-shaped ring groove that matches the T-shaped ring block 411.

[0035] Specifically, the mounting plate 42 and the annular tube 21 are sealed together. The annular mesh tube 41 is rotatably mounted on the mounting plate 42 through the cooperation of the T-shaped ring block 411 and the T-shaped ring groove. The annular mesh tube 41 can be easily removed by disassembling the mounting plate 42 so as to replace the activated carbon inside and clean the arc-shaped filter screen 43.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A backflow-preventing faucet, comprising a faucet body (1) and a shut-off knob (11) rotatably connected to its periphery, characterized in that: The faucet body (1) is fixedly installed with an anti-backflow device (2) on the periphery of the connection end with the water pipe; The backflow prevention device (2) includes a vertically arranged annular tube (21), the diameter of the inner cavity of the annular tube (21) being larger than the inner diameter of the faucet body (1); An anti-backflow component (22) is snapped into place at the connection between the faucet body (1) and the ring pipe (21); The anti-backflow assembly (22) includes an annular baffle (221), and a conical flow-blocking ring (222) is fixedly connected to the inner wall of one side of the annular baffle (221); The tip of the conical flow-blocking ring (222) extends into the faucet body (1).

2. The anti-backflow faucet according to claim 1, characterized in that: The faucet body (1) and the annular pipe (21) are fixedly connected to each other by a connector (3). The connector (3) includes a connecting plate (31). The side of the connecting plate (31) is attached to the periphery of the annular pipe (21) and fixedly connected by a fixing bolt.

3. A backflow-prevention faucet according to claim 2, characterized in that: The connecting plate (31) and the annular tube (21) are respectively provided with a slot (211) on the side that is in contact with each other, and a sealing ring (311) is engaged in the slot (211).

4. A backflow-prevention faucet according to claim 1, characterized in that: The conical flow-blocking ring (222) has a strip groove (223) on its periphery, and the conical flow-blocking ring (222) is specifically an elastic element of shape memory material.

5. A backflow-prevention faucet according to claim 1, characterized in that: A flow-disrupting element (4) is rotatably connected inside the annular tube (21). The flow-disrupting element (4) includes an annular mesh tube (41). An arc-shaped filter (43) is fixedly connected to the periphery of the annular mesh tube (41). The arc-shaped filter (43) is specifically S-shaped.

6. A backflow-prevention faucet according to claim 5, characterized in that: The top end of the annular tube (21) is fixedly connected to a mounting plate (42) by a locking bolt. The top end of the annular tube (41) is fixedly connected to a T-shaped ring block (411). The surface of the mounting plate (42) is provided with a T-shaped ring groove that matches the T-shaped ring block (411).

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