Chemical adding device of closed hot water heat supply system

Abstract

The utility model relates to the technical field of heat supply system accessory equipment, in particular to a closed hot water heat supply system dosing device, which comprises a dosing device, the dosing device is arranged on a water supply pipe between a heat supply system heat exchange station water tank and a heat supply pipe network, and a control valve A is arranged on the water supply pipe. Wherein the chemical adding device is arranged behind the control valve A, a chemical groove is formed in the chemical adding device, the lower portion of the chemical groove is connected with a chemical adding pipe A, the chemical adding pipe A is connected with a chemical adding pipe B through a loose joint, the chemical adding pipe B is connected with a water supply pipe, a control valve B is arranged on the chemical adding pipe B, and an anti-corrosion layer is arranged on the inner side wall of the chemical groove. And a screen is arranged above the medicine groove. The device is simple in structure and convenient to install and use, can avoid the problem that a water pump in a water supply network is prone to running faults caused by dosing of a water tank of a traditional heat exchange station in the using process, facilitates reduction of equipment and maintenance cost, and plays a positive role in guaranteeing heat supply stability.

Description

Technical Field

[0001] The utility model relates to the technical field of heating system accessory equipment, in particular to a closed hot water heating system dosing device. Background Art

[0002] During the heating period, since the secondary pipeline is directly connected to the user end, the user-end pipes and filter models are generally small, and impurities in the pipeline water are prone to scale and blockage, thereby reducing the flow into the household, affecting the user's heating effect, and increasing the workload of the heating service personnel. Therefore, it is necessary to add scale inhibitors to the secondary network system to reduce blockages and ensure the stable operation of the heating system, thereby bringing users a good heating experience.

[0003] The existing addition of scale inhibitors is generally done by directly adding them to the water tank of the heat exchange station. For example, the Chinese utility model patent "CN 220669582 U A circulation device for heat supply" records the technical solution of "adding softeners and disinfectants to the clean water tank through the dosing port to soften and disinfect the return water." However, in actual use, if the scale inhibitor is directly added to the water tank of the heat exchange station, the scale inhibitor and rust impurities will react chemically and produce a large amount of gas. The generated gas will be partially dissolved in the water body due to the pressure environment in the water tank of the heat exchange station. When the hot water enters the make-up water pump, the dissolved gas will escape and enter the water supply pump due to the change in pressure, causing the water supply pump to be air-intake and unable to work normally, which increases the burden of maintenance work and also affects the normal operation of heating.

[0004] Therefore, a dosing device for a heating system that can avoid the generation of a large amount of gas and thus ensure the stable operation of a water supply pump is a problem that needs to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a closed hot water heating system dosing device to address the deficiencies of the above-mentioned prior art, so as to avoid the generation of a large amount of gas during the dosing process, thereby preventing the water supply pump from being unable to operate normally due to air intake, and ensuring the stable and normal operation of the heating.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dosing device for a closed hot water heating system, wherein the dosing device is arranged and installed on the water supply pipe between the water tank of the heat exchange station and the heating pipe network, a control valve A is installed on the water supply pipe, the dosing device is arranged and installed on the water supply pipe behind the control valve A, a medicine trough is provided in the dosing device, the medicine trough is connected to the dosing pipe B, the dosing pipe B is connected to the water supply pipe, and a control valve B is installed on the dosing pipe B.

[0007] Furthermore, the medicine tank is connected to the medicine adding pipe A below, and the medicine adding pipe A and the medicine adding pipe B are detachably connected.

[0008] Furthermore, the inner sides of the connecting ends of the dosing tube A and the dosing tube B are provided with internal threads, the dosing tube A is connected to one end of the union joint via the internal threads, and the other end of the union joint is connected to the dosing tube B via the internal threads.

[0009] Furthermore, an anti-corrosion layer is provided on the inner wall of the medicine groove.

[0010] Furthermore, a screen is movably placed above the medicine tank.

[0011] Beneficial effects of the utility model:

[0012] 1. Simple structure, easy installation and use, can avoid the problem of water pump operation failure in the water supply network that is easily caused by adding chemicals to the water tank of the traditional heat exchange station, and help reduce equipment and maintenance costs;

[0013] 2. The medicine trough adopts anti-corrosion design and is equipped with a screen, which can effectively ensure the service life and avoid clogging. It can avoid frequent inspection and maintenance while being used stably, effectively reducing the labor intensity of operators and bringing convenience to actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the installation position of the utility model;

[0015] Figure 2 This utility model Figure 1 A partial enlarged schematic diagram of part A;

[0016] Figure 3 This is a schematic diagram of the connection structure between the medicine tank and the medicine adding pipe B of the utility model;

[0017] Figure 4 This is a schematic diagram of the anti-corrosion layer arrangement of the utility model (looking down at the medicine tank);

[0018] Figure 5 This is a schematic diagram of the installation of the screen of the utility model (looking down at the medicine trough).

[0019] The names corresponding to the marks in the figure are:

[0020] 1. Heat exchange station water tank; 2. Heating network; 21. High-area heating network; 22. Low-area water supply network; 3. Water supply pipe; 31. Control valve A; 4. Dosing device; 41. Drug tank; 411. Dosing pipe A; 412. Anti-corrosion layer; 42. Dosing pipe B; 421. Control valve B; 43. Union joint; 44. Screen. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0022] Embodiments of the present utility model:

[0023] like Figure 1-5 As shown, in this embodiment, the dosing device 4 is installed on the water supply pipe 3 between the water tank 1 of the heat exchange station and the heating network 2, wherein the heating network 2 is an existing one, including a high-area heating network 21 and a low-area water supply network 22.

[0024] A control valve A31 is installed on the water supply pipe 3, and a dosing pipe B42 is connected to the water supply pipe 3 behind the control valve A31, and is connected to the medicine tank 41 in the dosing device 4 through the dosing pipe B42, wherein a dosing pipe A411 is arranged below the medicine tank 41, and the dosing pipe A411 is connected to the dosing pipe B42 through a flexible joint 43, and a control valve B421 is installed on the dosing pipe B42.

[0025] An anti-corrosion layer 412 is disposed on the inner periphery of the medicine groove 41 , which may be an anti-rust paint coating in this embodiment, and a screen 44 is placed above the medicine groove 41 .

[0026] The principle of this utility model is:

[0027] During the preparation and installation of the utility model, a dosing pipe B42 is installed on the water supply pipe 3 behind the control valve A31 (the control valve A31 can be a gate valve, etc.) and in front of the heating network 2, and a control valve B421 is installed on the dosing pipe B42 (the control valve B421 can be a ball valve, etc.), and then a medicine groove 41 is processed and manufactured. The medicine groove 41 can be in various shapes, such as the inverted step-shaped shape in the accompanying drawings of the embodiment, and is connected to the dosing pipe A411 at the bottom of the medicine groove 41, wherein internal threads are provided on the inner walls of the dosing pipe A411 and the dosing pipe B42, so that the dosing pipe A411 can be connected to the dosing pipe B42 through a flexible joint 43, thereby realizing the connection and installation of the device. The flexible joint 43 is already available in the process and will not be repeated. At the same time, in order to ensure the sealing of the connection, raw tape can be applied at the connection between the flexible joint 43 and the dosing pipe A411 and the dosing pipe B42.

[0028] When in use, pour the prepared scale inhibitor into the medicine tank 41, and then put the screen 44 on it, so as to control the opening of the control valve B421, and slowly add the scale inhibitor in the medicine tank 41 to the water supply pipe 3. Since the contact area between the scale inhibitor and the pipe wall in the water supply pipe 3 is small and the flow speed is fast, even if a small amount of gas is generated, it will be quickly taken away and will not affect the use of the water pump in the subsequent heating network 2.

[0029] In the embodiment of the utility model, the medicine tank 41 is made of iron. In order to prevent the scale inhibitor from reacting with the medicine tank 41, the inner wall of the medicine tank 41 is subjected to anti-corrosion treatment by spraying anti-rust paint. Since the medicine tank 41 is placed in the open air, in order to prevent debris from entering the medicine tank 41 and causing pipeline blockage, a screen 44 is placed on the medicine tank 41 to intercept debris and ensure the stable use of the device.

Claims

1. A dosing device for a closed hot water heating system, characterized in that: The dosing device (4) is arranged and installed on the water supply pipe (3) between the water tank (1) of the heat exchange station and the heating pipe network (2); a control valve A (31) is installed on the water supply pipe (3); the dosing device (4) is arranged and installed on the water supply pipe (3) behind the control valve A (31); a medicine tank (41) is provided in the dosing device (4); the medicine tank (41) is connected to a dosing pipe B (42); the dosing pipe B (42) is connected to the water supply pipe (3); and a control valve B (421) is installed on the dosing pipe B (42).

2. A dosing device for a closed hot water heating system according to claim 1, characterized in that: The medicine tank (41) is connected to a medicine adding pipe A (411) at the bottom, and the medicine adding pipe A (411) is detachably connected to the medicine adding pipe B (42).

3. A dosing device for a closed hot water heating system according to claim 2, characterized in that: The inner sides of the connection ends of the dosing tube A (411) and the dosing tube B (42) are provided with internal threads, and the dosing tube A (411) is connected to one end of the flexible joint (43) through the internal threads, and the other end of the flexible joint (43) is connected to the dosing tube B (42) through the internal threads.

4. A dosing device for a closed hot water heating system according to claim 1, characterized in that: An anti-corrosion layer (412) is provided on the inner side wall of the medicine groove (41).

5. A dosing device for a closed hot water heating system according to claim 1, characterized in that: A screen (44) is movably placed above the medicine tank (41).

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