Unpowered automatic dosing device for water treatment of heat supply system

Abstract

The utility model discloses an unpowered automatic dosing device for water treatment of a heat supply system, and belongs to the field of circulating water treatment devices. The device comprises a dosing tank, a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are communicated with the dosing tank, the water inlet end is arranged in the direction opposite to the water flow direction in a circulating water pipeline, filter tips are arranged on the water inlet pipe and the water outlet pipe, and a filtering self-cleaning mechanism is installed on the water inlet pipe and comprises an outer shell and a filtering cylinder net. The water inlet pipe is communicated with the interior of the shell, and water flowing out of the water inlet pipe enters the interior of the shell and flows to the dosing tank after being filtered by the filter cartridge screen. The utility model aims to solve the problems that water in a circulating water pipe often contains many impurities due to pipeline aging, water quality scale deposition and the like, the impurities are easy to accumulate to block a water inlet and outlet pipe and even directly influence a valve to control the flow of water flowing into a dosing tank, so that the dosing amount cannot be accurately controlled. The dosing amount of the dosing tank can be accurately controlled, and the accuracy of the device is improved.

Description

Technical Field

[0001] The utility model relates to a non-powered automatic dosing device for water treatment in a heating system, belonging to the field of circulating water treatment devices. Background Art

[0002] At present, the water treatment methods for hot water heating are divided into four types:

[0003] 1) Simple sodium ion exchange softening method. This method can only prevent scale, but cannot fundamentally prevent scale. The softened water is more corrosive than raw water, which aggravates the corrosion of the system.

[0004] 2) Softened water assisted dosing method. This method solves the corrosion problem of softened water, as well as additional scale prevention, and prevents equipment scaling caused by unqualified softened water. At present, large-scale central heating and district heating generally choose this water treatment method of softened water dosing, and there is wastewater discharge.

[0005] 3) Raw water dosing method. Raw water is directly dosed. Since the softened water is cancelled, the equipment investment is reduced and the labor is saved.

[0006] 4) Physical method. This type of method generally refers to magnetic field treatment. Choosing this method requires great caution. So far, there are few physical treatment methods with good effects.

[0007] Among the above four water treatment methods, from the perspective of long-term development trends, the simple sodium ion exchange softening method is to be gradually phased out. The softened water assisted dosing method and the raw water dosing method are the most commonly used in the prior art. Based on these two methods, the prior art discloses a dosing device that does not require additional power supply and can achieve dosing only by relying on the water flow in the circulating water pipe itself. That is, when the water in the circulating water pipeline flows normally, a micro-pressure is generated in the dosing tank to drive the medicament to be injected into the circulating water pipeline. However, during long-term use, due to reasons such as pipeline aging and water quality scaling, there are often many impurities in the water in the circulating water pipe. The impurities are easily accumulated and block the inlet and outlet pipes, and even directly affect the valve's control of the water flow into the dosing tank, thereby leading to problems such as inaccurate control of the dosing amount.

[0008] Therefore, it is urgent to propose a new non-powered automatic dosing device for water treatment in a heating system to solve the above technical problems. Summary of the Utility Model

[0009] The research and development purpose of the present utility model is to solve the problem that due to reasons such as pipeline aging and water quality scaling, there are often many impurities in the water in the circulating water pipe. These impurities are easily accumulated and block the inlet and outlet pipes, and even directly affect the flow rate of the valve controlling the water flow into the chemical dosing tank, thereby leading to the problem that the chemical dosing amount cannot be accurately controlled. A brief overview of the present utility model is given below to provide a basic understanding of certain aspects of the present utility model. It should be understood that this overview is not an exhaustive overview of the present utility model. It is not intended to identify the key or important parts of the present utility model, nor is it intended to limit the scope of the present utility model.

[0010] The technical solution of the present utility model:

[0011] A non-powered automatic chemical dosing device for heating system water treatment, including a chemical dosing tank, an inlet pipe and an outlet pipe communicated with the chemical dosing tank. The water inlet end of the inlet pipe and the water outlet end of the outlet pipe are both located in the circulating water pipeline, and the water outlet end is located downstream of the water inlet end. The water inlet end is arranged in the reverse direction of the water flow in the circulating water pipeline, and the water outlet end is arranged in the same direction as the water flow in the circulating water pipeline. Control valves are arranged on both the inlet pipe and the outlet pipe. A dosing valve is arranged on the top of the chemical dosing tank. Filter nozzles are arranged on both the inlet pipe and the outlet pipe. A filter self-cleaning mechanism is installed on the inlet pipe. The filter self-cleaning mechanism includes a housing and a filter cylinder net. The filter cylinder net is arranged inside the housing. The inlet pipe is communicated with the inside of the housing. The water flowing out of the inlet pipe enters the inside of the housing and flows into the chemical dosing tank after being filtered by the filter cylinder net.

[0012] Preferably: The filter self-cleaning mechanism further includes a positioning mounting plate, a driving motor, a rotating shaft, and a cleaning brush. The filter cylinder net is clamped and fixed inside the housing through the positioning mounting plate arranged at the top. An inlet hole is opened on the positioning mounting plate directly above the inside of the filter cylinder net. The driving motor is fixedly installed on the outer side of the top of the housing through a motor seat. One end of the rotating shaft is fixedly connected to the output end of the driving motor. The other end of the rotating shaft extends into the inside of the housing, passes through the positioning mounting plate and the filter cylinder net, and is rotatably connected to the inner wall of the bottom of the housing. The output end of the driving motor, the rotating shaft, and the filter cylinder net are coaxially arranged. The cleaning brush is installed on the rotating shaft, and the bottom of the cleaning brush is attached to the inner side wall of the filter cylinder net.

[0013] Preferably: A sewage outlet is arranged at the bottom of the housing, and the sewage outlet is connected with a sewage discharge valve.

[0014] Preferably: Positioning rings are arranged on both the bottom of the positioning mounting plate and the inner wall of the bottom of the housing. Both the upper and lower ends of the filter cylinder net are clamped in the positioning rings.

[0015] Preferably: A water outlet is arranged on the lower side of the housing, and a water inlet is arranged on the top of the housing.

[0016] Preferably, the water inlet side of the filter tip is provided with a conical opening.

[0017] Preferably, a filter screen is provided on the water outlet side of the filter tip.

[0018] The utility model has the following beneficial effects:

[0019] 1. The filter tip of the utility model preliminarily filters large particle impurities, avoiding the situation that large particle impurities directly block the water inlet pipe, water outlet pipe and medicine adding tank valve during use, resulting in shutdown, improving the service life of the device and reducing the maintenance frequency;

[0020] 2. The filter self-cleaning mechanism of the utility model filters small particle impurities, avoiding the long-term accumulation of small particle impurities blocking the valve, resulting in inaccurate control of water flow, enabling accurate control of the medicine adding amount of the medicine adding tank and improving the accuracy of the device;

[0021] 3. The filter self-cleaning mechanism of the utility model can realize automatic cleaning, and can realize automatic cleaning and sewage removal without disassembling the equipment, improving the efficiency and being convenient and fast;

[0022] 4. The utility model solves the problems of scaling, blockage, reduction of heat exchange efficiency and increase of circulation resistance caused by unqualified water quality, affecting the heating quality, and is suitable for popularization and use. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a non-powered automatic dosing device for water treatment in a heating system;

[0024] Figure 2 is a schematic structural diagram of the filter tip of the utility model;

[0025] Figure 3 is a schematic structural diagram of the filter self-cleaning mechanism of the utility model;

[0026] In the figure, 1 - medicine adding tank, 2 - water inlet pipe, 3 - water outlet pipe, 4 - filter tip, 5 - circulating water pipeline, 6 - filter self-cleaning mechanism, 41 - conical opening, 42 - filter screen, 61 - outer housing, 62 - filter cylinder net, 63 - positioning mounting plate, 64 - driving motor, 65 - rotating shaft, 66 - cleaning brush, 67 - water inlet hole, 68 - motor seat, 69 - sewage outlet, 610 - positioning ring, 611 - water outlet, 612 - water inlet. Detailed Embodiment

[0027] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be described below through specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0028] The connections mentioned in the present utility model are divided into fixed connections and detachable connections. The fixed connection is an inseparable connection, including but not limited to conventional fixed connection methods such as hemming connection, riveting connection, bonding connection, and welding connection. The detachable connection includes but not limited to conventional disassembly methods such as threaded connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly defined, it is defaulted that at least one connection method can always be found among the existing connection methods to achieve this function, and those skilled in the art can select according to their needs. For example: welding connection is selected for the fixed connection, and hinge connection is selected for the detachable connection.

[0029] Specific Embodiment 1: In combination with Figures 1 - 3 This embodiment is described. An automatic chemical dosing device without power for water treatment in a heating system of this embodiment includes a chemical dosing tank 1, a water inlet pipe 2 and a water outlet pipe 3 communicated with the chemical dosing tank 1. The water inlet end of the water inlet pipe 2 and the water outlet end of the water outlet pipe 3 are both located in the circulating water pipeline 5, and the water outlet end is located downstream of the water inlet end. The water inlet end is arranged against the water flow direction in the circulating water pipeline 5, and the water outlet end is arranged along the water flow direction in the circulating water pipeline 5. Control valves are arranged on both the water inlet pipe and the water outlet pipe. A dosing valve is arranged at the top of the chemical dosing tank 1. Filter nozzles 4 are arranged on both the water inlet pipe 2 and the water outlet pipe 3. The filter nozzle 4 can be screwed onto the water inlet pipe 2 or the water outlet pipe 3 through threaded cooperation. A filter self-cleaning mechanism 6 is installed on the water inlet pipe 2. The filter self-cleaning mechanism 6 includes an outer housing 61 and a filter cartridge net 62. The filter cartridge net 62 is arranged inside the outer housing 61. The water inlet pipe 2 is communicated with the inside of the outer housing 61. The water flowing out of the water inlet pipe 2 enters the inside of the outer housing 61 and flows to the chemical dosing tank 1 after being filtered by the filter cartridge net 62, removing large and small particle impurities in the water.

[0030] The chemical dosing tank 1 replenishes the chemicals and the amount of chemicals inside the chemical dosing tank 1 through the dosing valve.

[0031] The filter self-cleaning mechanism 6 further includes a positioning mounting plate 63, a driving motor 64, a rotating shaft 65, and a cleaning brush 66. The filter cartridge net 62 is clamped and fixed inside the outer housing 61 through the positioning mounting plate 63 provided at the top. An inlet hole 67 is provided on the positioning mounting plate 63 directly above the inside of the filter cartridge net 62. The driving motor 64 is fixedly installed on the outer side of the top of the outer housing 61 through a motor base 68. One end of the rotating shaft 65 is fixedly connected to the output end of the driving motor 64. The other end of the rotating shaft 65 extends into the inside of the outer housing 61, passes through the positioning mounting plate 63 and the filter cartridge net 62, and is rotatably connected to the inner wall of the bottom of the outer housing 61. The output end of the driving motor 64, the rotating shaft 65, and the filter cartridge net 62 are coaxially arranged. The cleaning brush 66 is installed on the rotating shaft 65, and the bottom of the cleaning brush 66 is attached to the inner side wall of the filter cartridge net 62. A sewage outlet 69 is provided at the bottom of the outer housing 61, and the sewage outlet 69 is connected to a sewage discharge valve.

[0032] Positioning rings 610 are provided on both the bottom of the positioning mounting plate 63 and the inner wall of the bottom of the outer housing 61. The upper and lower ends of the filter cartridge net 62 are clamped inside the positioning rings 610 to limit the filter cartridge net 62.

[0033] An outlet 611 is provided on the lower side of the outer housing 61, and the outlet 611 is connected to an outlet valve. An inlet 612 is provided on the top of the outer housing 61.

[0034] The water inlet side of the filter nozzle 4 is provided with a conical opening 41, which is in an open shape to increase the water inlet volume. The water outlet side of the filter nozzle 4 is provided with a filter net 42 or a bubble net. When the filter nozzle 4 is installed on the water inlet pipe 2, the water outlet side of the filter nozzle 4 is provided with the filter net 42 at this time, which can remove large particle impurities entering the chemical addition tank 1. When the filter nozzle 4 is installed on the water outlet pipe 3, the water outlet side of the filter nozzle 4 is provided with a bubble net or the filter net 42 at this time, which can disperse and input the liquid medicine.

[0035] When the filter self-cleaning mechanism 6 is in the filtering state, the sewage discharge valve is closed, and the outlet valve is opened. The water inlet pipe 2 enters the inside of the outer housing 61 through the inlet 612 at the top, then enters the filter cartridge net 62 through the inlet hole 67, and after permeating and filtering through the filter cartridge net 62, it flows out from the outlet 611 on the lower side of the outer housing 61 and enters the inside of the chemical addition tank 1 to be mixed with the medicine. The mixed liquid medicine is sprayed into the circulating water pipeline 5 from the water outlet pipe 3.

[0036] When the filter self-cleaning mechanism 6 is in the self-cleaning state, the sewage discharge valve is opened, and the outlet valve is closed. The driving motor 64 operates, drives the cleaning brush 66 on it to rotate through the rotating shaft 65. While the cleaning brush 66 rotates, it brushes and cleans the inner side wall of the filter cartridge net 62, and the dirty water after cleaning is discharged through the sewage outlet 69.

[0037] The medicament in the chemical dosing tank 1 does not use the resin and salt addition method, but adopts a new type of auxiliary agent. Only about 5 grams to 10 grams of the medicament need to be dosed per ton of water. It is a safe and non-toxic, white granular concentrated mixture that is easily soluble in water. It is used for the protection of the water system and the maintenance of water quality, effectively preventing scale formation in the water supply system; it can also solve the problem of red water hazards caused by corrosion or high ferrous ion content in water, and can rapidly reduce the turbidity and chromaticity of water; it can also form a protective film on the metal surface, effectively slowing down the corrosion phenomenon of the water system. At the same time, it slowly removes the existing water scale and rust scale in the system during the use process.

[0038] It should be noted that in the above embodiments, as long as the technical solutions do not conflict, they can be arranged and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutations and combinations. Therefore, the present utility model will no longer explain each of the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present utility model.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An automatic non-powered dosing device for water treatment in a heating system, comprising a chemical dosing tank (1), a water inlet pipe (2) and a water outlet pipe (3) communicating with the chemical dosing tank (1). The water inlet end of the water inlet pipe (2) and the water outlet end of the water outlet pipe (3) are both located in the circulating water pipeline (5), and the water outlet end is located downstream of the water inlet end. The water inlet end is arranged in the reverse direction of the water flow direction in the circulating water pipeline (5), and the water outlet end is arranged in the same direction as the water flow direction in the circulating water pipeline (5). Control valves are provided on both the water inlet pipe and the water outlet pipe. A dosing valve is provided at the top of the chemical dosing tank (1), characterized in that: Filter nozzles (4) are provided on both the water inlet pipe (2) and the water outlet pipe (3). A filter self-cleaning mechanism (6) is installed on the water inlet pipe (2). The filter self-cleaning mechanism (6) includes a housing (61) and a filter cartridge net (62). The filter cartridge net (62) is arranged inside the housing (61). The water inlet pipe (2) communicates with the inside of the housing (61). The water flowing out of the water inlet pipe (2) enters the inside of the housing (61), and after being filtered by the filter cartridge net (62), it flows towards the chemical dosing tank (1).

2. The non-powered automatic dosing device for water treatment of a heating system according to claim 1, characterized in that: The filter self-cleaning mechanism (6) further includes a positioning mounting plate (63), a driving motor (64), a rotating shaft (65), and a cleaning brush (66). The filter cartridge net (62) is clamped and fixed inside the housing (61) through the positioning mounting plate (63) provided at the top. An inlet hole (67) is provided on the positioning mounting plate (63) directly above the inside of the filter cartridge net (62). The driving motor (64) is fixedly installed on the outer side of the top of the housing (61) through a motor seat (68). One end of the rotating shaft (65) is fixedly connected to the output end of the driving motor (64). The other end of the rotating shaft (65) extends into the inside of the housing (61), passes through the positioning mounting plate (63) and the filter cartridge net (62), and is rotatably connected to the inner wall of the bottom of the housing (61). The output end of the driving motor (64), the rotating shaft (65), and the filter cartridge net (62) are coaxially arranged. A cleaning brush (66) is installed on the rotating shaft (65), and the bottom of the cleaning brush (66) is attached to the inner side wall of the filter cartridge net (62).

3. The water treatment non-powered automatic dosing device for a heating system according to claim 2, characterized in that: A sewage outlet (69) is provided at the bottom of the housing (61), and the sewage outlet (69) is connected to a sewage discharge valve.

4. The non-powered automatic dosing device for water treatment of a heating system according to claim 3, characterized in that: Positioning rings (610) are provided on both the bottom of the positioning mounting plate (63) and the inner wall of the bottom of the housing (61). The upper and lower ends of the filter cartridge net (62) are clamped inside the positioning rings (610).

5. The non-powered automatic dosing device for water treatment in a heating system according to claim 4, characterized in that: A water outlet (611) is provided on the lower side of the housing (61), and a water inlet (612) is provided on the top of the housing (61).

6. The automatic non-powered drug dosing device for heating system water treatment according to claim 1, wherein: The water inlet side of the filter nozzle (4) is provided with a conical opening (41).

7. A non-powered automatic dosing device for water treatment in a heating system according to any one of claims 1-6, characterized in that: A filter net (42) is provided on the water outlet side of the filter nozzle (4).

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