Circulating water return device

Abstract

The utility model relates to the technical field of water return devices, in particular to a circulating water return device which comprises a water return pump and a shell, a water inlet pipe and a water outlet pipe are arranged on the water return pump, a dosing assembly is arranged on the water inlet pipe, two connecting pipes are arranged on the dosing assembly, one connecting pipe is connected with the water inlet pipe, and the other connecting pipe is connected with the water outlet pipe. One connecting pipe is connected with a water supply device, the other connecting pipe is connected with a water supply device, the chemical adding assembly comprises a mixing part, a chemical adding pipe is arranged on one side of the mixing part, the chemical adding pipe is communicated with the mixing part, a chemical adding opening is formed in the chemical adding pipe, and a sealing structure is arranged in the chemical adding pipe. The scale remover is arranged in the water inlet pipe and mixed with water flow to be conveyed into the water return pump along the water inlet pipe, scale in the water return pump is eliminated, and therefore normal work of the water return pump is prevented from being affected, and the scale remover can be input into the chemical feeding pipe through the chemical feeding port by arranging the chemical feeding pipe and forming the chemical feeding port in the chemical feeding pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to water return device technical field especially relates to a kind of circulating water return device. BACKGROUND

[0002] Now, more and more families are equipped with "zero cold water" hot water supply system, and the design of this system aims to enable users to quickly obtain hot water and reduce waiting time, and the existing "zero cold water" hot water supply system usually adopts two main ways to achieve this goal: one way is to install a mechanical one-way check valve at the end of the hot water pipeline, and the cold water in the hot water pipe is circulated by the cold water pipe, so as to avoid the cold water from being discharged and then using hot water;The other way is to use a dedicated water return pipeline to flow the cold water in the hot water pipe back to the water inlet of the hot water pipe at regular intervals.The application of these technologies not only improves the use efficiency of hot water, but also improves the user experience, making family life more convenient and comfortable.

[0003] And in order to prevent the internal water pump from rusting when using the circulating water return device, a sealing structure is usually used to increase the sealing property of the water return device to prevent water leakage, such as Chinese patent No.CN218269603U discloses "a circulating water return device", which sets a sealing isolation piece between the control circuit board and the water return pump, reduces the influence of water vapor on the control circuit board when the water pump leaks, sets a clamping groove and a slot on both sides of the water return pump, which are adapted to the structure of the water return pump, and clamps the water return pump to improve its stability in the cavity of the shell as much as possible, and installs a temperature sensor on the inner wall of the flow channel of the water return pump to directly measure the water temperature, so that the user can control the water temperature more accurately.

[0004] But in actual use, the water flowing through the water return device inevitably contains calcium, magnesium and other salts and impurities, and after long-term use, the internal water return pump will be affected by the accumulation of scale, which will affect the normal work, resulting in less water return of the water return device, slow water flow speed, and affect the use effect and use experience. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem that the internal water return pump will be affected by the accumulation of scale after long-term use in the prior art, which will affect the normal work, resulting in less water return of the water return device, slow water flow speed and other shortcomings, and proposes a circulating water return device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a circulating backwater device, including backwater pump and casing, be provided with water inlet pipe and water outlet pipe on backwater pump, be provided with dosing assembly on water inlet pipe, be provided with two connecting pipes on dosing assembly, one connecting pipe is connected with water inlet pipe, another connecting pipe is connected with water supply device, dosing assembly includes mixing part, one side of mixing part is provided with dosing pipe, dosing pipe communicates with mixing part, dosing pipe is opened with dosing mouth, be provided with sealing structure in dosing pipe.

[0008] Further, the sealing structure includes a stopper fixedly arranged in the dosing pipe, a through hole is formed in the stopper, and a sealing member is arranged on one side of the stopper close to the mixing part and in contact with the stopper.

[0009] Further, a tapered hole connected with the through hole is formed in the stopper, and a tapered portion matched with the tapered hole is fixedly arranged on the sealing member, and a spring is arranged between the sealing member and the dosing pipe.

[0010] Further, a pressing portion is slidably arranged on the dosing pipe, and a plug rod corresponding to the through hole is fixedly arranged on the pressing portion.

[0011] Further, a sealing ring is fixedly arranged on the pressing portion, a guide ring is fixedly arranged on the outer wall of the pressing portion, and a limiting ring matched with the guide ring is fixedly arranged on the inner wall of the dosing pipe.

[0012] Further, two baffles are fixedly arranged in the mixing part, a mixing cavity is formed between the two baffles, and the output end of the dosing pipe is connected with the mixing cavity.

[0013] Further, a guide plate is fixedly arranged on each of the baffles, and the guide plate is an elastic plate and has an arc structure.

[0014] The circulating backwater device has the beneficial effects that:

[0015] In the utility model, by setting the mixing part and adding the descaling agent into the mixing part, the descaling agent is mixed with the water flow and conveyed to the backwater pump along the water inlet pipe, so that the water scale in the backwater pump is eliminated, thereby avoiding affecting the normal work of the backwater pump.

[0016] Secondly, in the utility model, by setting the dosing pipe and the dosing mouth on the dosing pipe, the descaling agent can be input into the dosing pipe through the dosing mouth, and the descaling agent is input into the mixing part through the dosing pipe, and the sealing structure is arranged in the dosing pipe to prevent water leakage of the dosing pipe in daily use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a kind of structure schematic view of circulating backwater device.

[0018] Figure 2 It is the structure schematic view of the mixing part of the utility model;

[0019] Figure 3 It is the structure schematic view of the partition of the utility model;

[0020] Figure 4 It is the structure schematic view of the connecting pipe of the utility model;

[0021] Figure 5 It is the structure schematic view of the A area of the utility model.

[0022] In the figure: 1, backwater pump;2, shell;3, water inlet pipe;4, water outlet pipe;5, dosing assembly;51, mixing part;511, partition;512, guide plate;52, dosing pipe;53, dosing port;54, sealing structure;541, blocking piece;542, through hole;543, sealing piece;544, spring;55, pressing part;551, sealing ring;552, guide ring;553, limiting ring;56, insertion rod;6, connecting pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Referring to Figures 1-5 A circulating backwater device, comprising backwater pump 1 and shell 2, backwater pump 1 is provided with water inlet pipe 3 and water outlet pipe 4, water inlet pipe 3 is provided with dosing assembly 5, dosing assembly 5 is provided with two connecting pipes 6, one connecting pipe 6 is connected with water inlet pipe 3, and the other connecting pipe 6 is connected with water supply device, dosing assembly 5 includes mixing part 51, one side of mixing part 51 is provided with dosing pipe 52, dosing pipe 52 is communicated with mixing part 51, dosing port 53 is formed in dosing pipe 52, and sealing structure 54 is arranged in dosing pipe 52.

[0025] In the utility model, the scale remover is input into dosing pipe 52 through dosing port 53, and is input into mixing part 51 through dosing pipe 52, the scale remover is mixed with water flow and is transported to backwater pump 1 along water inlet pipe 3, and the scale in backwater pump 1 is eliminated, so that the normal work of backwater pump 1 is avoided, and sealing structure 54 is arranged in dosing pipe 52, so that the water leakage of dosing pipe 52 in daily use is prevented.

[0026] Further, in the embodiment, the sealing structure 54 includes a blocking piece 541 fixedly arranged in the dosing pipe 52, the blocking piece 541 is provided with a through hole 542, and the blocking piece 541 is provided with a sealing piece 543 on the side close to the mixing part 51, the sealing piece 543 is in contact with the blocking piece 541, and the sealing piece 543 is pushed towards the blocking piece 541 due to the large water pressure in the mixing part 51, so that the sealing piece 543 is in abutment with the blocking piece 541 to form a sealing structure.

[0027] Further, in the embodiment, the blocking piece 541 is provided with a tapered hole connected with the through hole 542, and the sealing piece 543 is fixedly provided with a tapered portion matched with the tapered hole, so that the contact area and the sealing performance are increased, and the spring 544 is arranged between the sealing piece 543 and the dosing pipe 52, the spring 544 pushes the sealing piece 543, so that the sealing piece 543 is always in abutment with the blocking piece 541 to form a sealing structure, and water leakage of the through hole 542 is prevented.

[0028] It should be noted that, in the embodiment, the dosing pipe 52 is slidably provided with a pressing part 55, the pressing part 55 is fixedly provided with a plug rod 56 matched with the through hole 542, the plug rod 56 is in contact with the sealing piece 543 by applying force to the pressing part 55, the plug rod 56 pushes the sealing piece 543 to move away from the blocking piece 541 by continuously applying force to the pressing part 55, and the liquid medicine in the dosing pipe 52 flows into the mixing part 51, and then flows into the water inlet pipe 3 and the backwater pump 1.

[0029] In addition, in the embodiment, the pressing part 55 is fixedly provided with a sealing ring 551, the outer wall of the pressing part 55 is fixedly provided with a guide ring 552, and the inner wall of the dosing pipe 52 is fixedly provided with a limiting ring 553 matched with the guide ring 552, the guide ring 552 and the limiting ring 553 are matched to prevent the pressing part 55 from falling off, the sealing ring 551 is in abutment with the blocking piece 541 to form a sealing structure when force is applied to the pressing part 55, and the liquid medicine does not flow out of the dosing opening 53 when the liquid medicine enters the mixing part 51.

[0030] In detail, in the embodiment, two baffles 511 are fixedly arranged in the mixing part 51, a mixing cavity is formed between the two baffles 511, and the output end of the dosing pipe 52 is connected with the mixing cavity, so that the liquid medicine exists between the two baffles 511 when the liquid medicine enters the mixing part 51, and the water flow and the liquid medicine are mixed by the two baffles 511 when the water enters the mixing part 51, so that the liquid medicine is not left in the corner and is not mixed insufficiently.

[0031] In more detail, in the embodiment, the baffles 511 are fixedly provided with guide plates 512, the guide plates 512 are elastic plates and are in arc-shaped structures, and the water flow forms a swirling vortex when the water flow flows through the guide plates 512, so that the liquid medicine and the water are mixed.

[0032] When working, water supply to the backwater pump 1 is stopped, the backwater pump 1 is closed, a descaling agent is added into the dosing opening 53, the pressing part 55 on the dosing pipe 52 is pressed to make the inserting rod 56 contact with the sealing element 543 through the through hole 542, force is continuously applied to the pressing part 55 to make the inserting rod 56 push the sealing element 543 to move and separate from the blocking element 541, the liquid in the dosing pipe 52 flows into the mixing part 51 and mixes with the water in the mixing part 51, the backwater pump 1 is opened, and the mixture enters the backwater pump 1 along the water inlet pipe 3 to descale the backwater pump 1.

[0033] The above merely describes a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A circulating backwater device comprising a backwater pump (1) and a housing (2), characterized in that, The backwater pump (1) is provided with an inlet pipe (3) and an outlet pipe (4), the inlet pipe (3) is provided with a dosing assembly (5), the dosing assembly (5) is provided with two connecting pipes (6), one connecting pipe (6) is connected with the inlet pipe (3), and the other connecting pipe (6) is connected with a water supply device, the dosing assembly (5) comprises a mixing part (51), one side of the mixing part (51) is provided with a dosing pipe (52), the dosing pipe (52) is communicated with the mixing part (51), the dosing pipe (52) is provided with a dosing opening (53), and the dosing pipe (52) is provided with a sealing structure (54).

2. A recirculating backwater device according to claim 1, wherein: The sealing structure (54) comprises a blocking piece (541) fixedly arranged in the dosing pipe (52), the blocking piece (541) is provided with a through hole (542), and the blocking piece (541) is provided with a sealing piece (543) close to the mixing part (51).

3. A recirculating backwater device according to claim 2, wherein: The blocking piece (541) is provided with a tapered hole connected with the through hole (542), the sealing piece (543) is fixedly provided with a tapered portion matched with the tapered hole, and the sealing piece (543) and the dosing pipe (52) are provided with a spring (544).

4. A recirculating backwater device according to claim 2, wherein: The dosing pipe (52) is provided with a pressing portion (55) which is fixedly provided with a plug rod (56) corresponding to the through hole (542).

5. A recirculating backwater device according to claim 4, wherein: The pressing portion (55) is fixedly provided with a sealing ring (551), and the outer wall of the pressing portion (55) is fixedly provided with a guide ring (552), and the inner wall of the dosing pipe (52) is fixedly provided with a limiting ring (553) matched with the guide ring (552).

6. A recirculating backwater device according to claim 1, wherein: The mixing part (51) is fixedly provided with two partition plates (511), and a mixing cavity is formed between the two partition plates (511), and the output end of the dosing pipe (52) is connected with the mixing cavity.

7. A recirculating backwater device according to claim 6, wherein: The partition plate (511) is fixedly provided with a guide plate (512), and the guide plate (512) is an elastic plate and an arc-shaped structure.

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