Circulating chilled water collector

Abstract

The utility model discloses a circulating chilled water collector which comprises a water collector tank and a filter cartridge, the top of the water collector tank is provided with a filter water inlet, the bottom of the water collector tank is provided with a blow-off pipe, one end of the filter cartridge is connected with a filter water inlet pipe at the filter water inlet, and the other end of the filter cartridge is in extrusion contact with the inner bottom of the water collector tank; the filter water inlet pipe is a chilled water inlet pipe, and a drain outlet is formed in the bottom end of the filter cartridge and is inserted into a drain pipe of the water collector. When water enters the water collector, water flows into the water collector tank body through the filter cartridge, and impurities in the water are filtered out; when the filter cartridge is cleaned, the water inlet valve of the pipeline where the filter cartridge is located is closed, the blow-off pipe of the corresponding water collector is opened, water flows reversely, the filter cartridge is flushed, and sewage is discharged. By adopting the water collector disclosed by the utility model, the circulating water system does not need to stop when the filter cartridge is washed, and the self water flow of the circulating water system is used for backwashing.

Description

Technical Field

[0001] The utility model relates to the technical field of water collectors and distributors, in particular to a circulating chilled water collector and distributor. Background Technique

[0002] Industrial circulating chilled water, as the main cold source for equipment cooling in industrial projects and industrial air conditioners, plays a crucial role in the production process. Conventional industrial circulating chilled water pipelines generally adopt carbon steel pipelines for welding. After welding, air purging and pipeline pre-film passivation are carried out. During operation, measures such as adding scale inhibitors and sterilizers to the water are taken to reduce impurities in the water and prevent pipeline blockage. However, in the actual production process, due to various reasons, there are many impurities in the water, especially in the early and late stages of system operation. Although pipeline filters are installed at the inlet of the end equipment, most of the end equipment is inside the workshop. Cleaning the filter may cause the equipment to stop running. At the same time, the filter sizes at the end of the equipment are relatively small and are easily blocked, resulting in frequent cleaning. The conventionally installed pipeline filter in front of the water pump needs to be completely removed for cleaning the filter screen, which is not convenient for cleaning. Content of the Utility Model

[0003] The purpose of the utility model is to provide a circulating chilled water collector and distributor, which filters impurities in the water by using a filter cartridge installed at the water inlet of the collector and distributor. After the filter is blocked, the filter cartridge is backwashed by the water flow of the circulating water system itself, and the flushing sewage is discharged, which can effectively reduce the time required for cleaning the filter, reduce the content of impurities in the pipeline, and reduce the cleaning frequency of the filters at the end equipment.

[0004] To achieve the above purpose, the utility model is implemented by the following scheme:

[0005] The utility model provides a circulating chilled water collector and distributor, including a collector and distributor tank body. A common water inlet pipe, a pressure balance pipe for the water collector and distributor, a water outlet pipe and an exhaust pipe are arranged at the top of the collector and distributor tank body. A drain pipe is arranged at the bottom of the water distributor tank body. A filtered water inlet, a filter cartridge and a sewage discharge pipe are also arranged on the collector and distributor tank body;

[0006] One end of the filter cartridge is connected to the filtered water inlet pipe at the filtered water inlet, and the other end is in extrusion contact with the inner bottom of the collector and distributor tank body; the filtered water inlet pipe is a chilled water inlet pipe;

[0007] The sewage discharge pipe is located directly below the filter cartridge and is communicated with the filter cartridge.

[0008] Preferably, the filter cartridge includes a fixed flange, a porous filter cartridge, a sewage discharge port and a gasket;

[0009] The fixed flange is connected to the top end of the porous filter cartridge, and the filter cartridge is fixed to the filtered water inlet of the collector and distributor tank body through the fixed flange;

[0010] The sewage outlet is located at the bottom of the porous filter cartridge; the sewage outlet is inserted into the sewage pipe;

[0011] The gasket is arranged at the bottom of the porous filter cartridge, and the gasket is in compression contact with the inner bottom of the water collector tank body to close the gap between the bottom of the filter cartridge and the inner bottom of the water collector tank body.

[0012] In this preferred embodiment, a filter cartridge is installed at the water inlet of the water collector to filter impurities in the chilled water. When the filter is blocked, the circulating water system's own water flow is used to backwash the filter cartridge, and the flushing sewage is discharged through the filter cartridge's own sewage outlet and the sewage pipe at the bottom of the water collector. This ensures that the circulating water system does not need to be shut down when flushing the filter cartridge, which can effectively reduce the time required to clean the filter.

[0013] Preferably, the porous filter cartridge is made of stainless steel, the porous filter cartridge has holes only on the side, and no filter holes are provided at the portion where the upper portion of the porous filter cartridge overlaps with the filter water inlet.

[0014] In this preferred embodiment, by designing that no filter holes are provided at the overlapping portion between the upper portion of the porous filter cartridge and the filter water inlet, leakage of chilled water at the connection is avoided.

[0015] Preferably, the wall thickness of the porous filter cartridge is in the range of 0-5 mm, and the pore size of the filter pores is in the range of 0-5 mm.

[0016] In this preferred embodiment, the pore size of the filter is further limited to achieve the best filtering effect.

[0017] Preferably, the bottom of the porous filter cartridge is inclined toward the center and is funnel-shaped, and the sewage outlet is located at the center of the bottom of the porous filter cartridge.

[0018] In this preferred embodiment, the bottom of the filter cartridge is designed to be funnel-shaped to facilitate water flow out of the sewage outlet.

[0019] Preferably, the outer wall of the bottom of the porous filter cartridge extends 3-5 cm out of the bottom of the cartridge to fix the gasket.

[0020] In this preferred embodiment, the outer wall of the bottom of the filter cartridge is designed to be extended to provide installation space for the gasket.

[0021] Preferably, the filter cartridge is also provided with a filter cartridge inspection section;

[0022] The lower part of the filter cartridge inspection section is connected to the filter cartridge via a flange, and the upper part of the filter cartridge inspection section is connected to the filter water inlet pipe via a flange. The filter water inlet pipe is provided with an inspection valve.

[0023] In this preferred embodiment, the inspection and disassembly of the filter cartridge is realized by setting up an inspection section. During inspection, the inspection section is first removed to leave a pulling space, and the filter cartridge can be pulled out.

[0024] Preferably, the length of the maintenance section of the filter cartridge is greater than the overall length of the filter cartridge.

[0025] In this preferred solution, by setting the length of the maintenance section to be greater than the overall length of the filter cartridge, there is sufficient space to extract the filter cartridge after the maintenance section is removed.

[0026] Preferably, the sewage discharge pipe is arranged at the lowest point of the bottom of the water collector tank body and is directly below the sewage discharge port of the filter cartridge;

[0027] A sewage discharge pipe valve is arranged at the outlet of the sewage discharge pipe to control the opening and closing of the water flow;

[0028] During normal operation, the sewage discharge pipe valve is closed. When backwashing the filter cartridge, the sewage discharge pipe valve is opened, and the positive pressure water flow in the water collector tank body enters the interior of the filter cartridge to backwash the porous filter cartridge, and the sewage flows out through the sewage discharge port.

[0029] In this preferred solution, the sewage discharge pipe is controlled by the sewage discharge pipe valve. Thus, during normal use, when the filtered chilled water flows into the water collector tank body and the filter cartridge needs to be cleaned, the sewage discharge pipe valve is opened and the filter inlet pipe valve is closed, so that the water in the circulating water system flows into the filter cartridge to backwash the filter cartridge, enabling the circulating water system not to stop operating during the filter cartridge flushing.

[0030] Preferably, control valves are arranged on the normal inlet pipe, the filtered inlet pipe, the pressure balance pipe for the divided water collector, the outlet pipe, and the exhaust pipe.

[0031] In this preferred solution, control valves are arranged on all pipes to facilitate the control of the on-off of each pipe.

[0032] The beneficial effects of the present utility model are as follows:

[0033] The present utility model provides a circulating chilled water collector. A filter cartridge is installed at the water inlet of the collector to filter impurities in the water. After the filter is blocked, the filter cartridge is backwashed by the water flow of the circulating water system itself, and the flushing sewage is discharged. When using the collector of the present utility model, the circulating water system does not need to stop operating during the filter cartridge flushing, which can effectively reduce the time required for cleaning the filter, reduce the impurity content in the pipeline, and reduce the number of times of cleaning the filter at the end equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a half-sectional view of the filter cartridge for the circulating chilled water collector provided by the present utility model;

[0035] Figure 2 is an installation schematic diagram of the water collector with a filter cartridge provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solution in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0037] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations. Embodiment 1

[0039] As Figure 2 shown, Embodiment 1 of the present invention provides a circulating chilled water collector, which includes a filter cartridge 1 and a collector tank body 2.

[0040] The collector tank body 2 has at least two inlets, which are divided into a filtered water inlet and a normal water inlet, and the filtered water inlet is the chilled water inlet.

[0041] As Figure 2 shown, corresponding to the normal water inlet, three normal water inlet pipes 4 are provided at the top of the collector tank body 2, and a pressure balance pipe 7 for the combined collector and distributor, an outlet pipe 8 and an exhaust pipe 9 are also provided, and control valves are provided on each pipe.

[0042] The filter cartridge 1 is installed at the water inlet of the filter, and the bottom of the filter cartridge 1 is in extrusion contact with the bottom of the water collector tank 2.

[0043] A filter water inlet pipe is provided corresponding to the filter water inlet, and the top of the filter cartridge 1 is connected to the filter water inlet pipe 3 for filtering the chilled water and then flowing into the water collector tank.

[0044] A sewage pipe 5 and an air drain pipe 6 are arranged at the bottom of the water collector tank 2, and a sewage pipe valve 501 and an air drain pipe valve 601 are respectively arranged.

[0045] The drain pipe 5 is arranged at the lowest part of the bottom of the water collector tank, directly below the drain outlet 103 of the filter cartridge 1, and a drain pipe valve 501 is arranged at the outlet of the drain pipe 5 to control the opening and closing of the water flow. The drain pipe 5 is used to receive impurities from the drain outlet of the filter cartridge and remove impurities in the water.

[0046] The drain pipe 6 is set independently from the sewage pipe 5 and is set at the lowest point of the bottom of the water collector tank. A drain pipe valve 601 is set at the outlet of the drain pipe 6 to control the opening and closing of the water flow. The drain pipe is used to remove cold water in the entire system.

[0047] See also Figure 1 The filter cartridge 1 includes a fixing flange 101 , a porous filter cartridge 102 , a drain port 103 and a gasket 104 .

[0048] The fixing flange 101 is connected to the top of the porous filter cartridge 102. The filter cartridge 1 is fixed to the filter water inlet of the water collector tank through the fixing flange 101. The flange connection is convenient for disassembly and maintenance.

[0049] It should be noted that the flange diameter and opening of the fixed flange 101 vary according to the flange diameter of the filter water inlet of the water collector.

[0050] In this embodiment, the porous filter cartridge 102 is made of stainless steel, with a wall thickness in the range of 0-5 mm, a pore size of the filter holes on the wall in the range of 0-5 mm, an outer diameter of the filter cartridge slightly smaller than the inner diameter of the filter inlet of the water collector where the filter cartridge is located, and no filter holes are set at the portion where the upper part of the filter cartridge 1 overlaps with the filter inlet of the water collector. The filter cartridge only has holes on the side, and the outer wall of the bottom of the filter cartridge extends about 3-5 cm from the bottom of the cartridge to fix the gasket 104. Figure 1 Shown in the enlarged part.

[0051] The bottom of the porous filter cartridge 102 is inclined toward the center and is funnel-shaped. The drain outlet 103 is located at the bottom center of the porous filter cartridge 102 . The outer diameter of the drain outlet 103 is slightly smaller than the inner diameter of the drain pipe of the water collector where the filter cartridge is located. The drain outlet 103 is inserted into the drain pipe 5 .

[0052] The gasket 104 is arranged at the lower part of the filter cartridge. The material of the gasket is selected as flexible rubber, and the gasket is fixed on the extended outer wall at the bottom of the filter cartridge. Since the water collector is generally cylindrical and has a curved bottom. When the filter cartridge is installed, the bottom gasket 104 contacts and presses against the inner bottom of the water collector tank body 2, forming a gasket with the same curvature as the inner bottom of the water collector tank body, closing the gap between the bottom of the filter cartridge and the inner bottom of the water collector, so that the water flow can only enter and exit through the pores of the filter cartridge.

[0053] In one embodiment, a filter cartridge maintenance section 302 is further provided at the upper part of the filter cartridge 1. The upper part of the filter cartridge maintenance section 302 is fixed to the filter inlet pipe 3 through a flange, and the lower part is connected to the filter cartridge 1 through a flange. A maintenance valve 303 is arranged at the connection between the filter cartridge maintenance section 302 and the filter inlet pipe 3.

[0054] It should be noted that both the filter cartridge 1 and the filter cartridge maintenance section 302 are connected by flanges, and the length of the filter cartridge maintenance section 302 needs to be greater than the overall length of the filter cartridge 1. The purpose of this design is to facilitate the maintenance and disassembly of the filter cartridge. The filter cartridge is generally very large and is fixed on the bracket. Without the maintenance section, even if the flange is opened, the filter cartridge cannot be pulled out. With the maintenance section, the maintenance section can be removed first to create a pulling space, and then the filter cartridge can be pulled out.

[0055] Based on the water collector provided in this embodiment, during normal operation, the sewage discharge pipe valve 501 and the drain pipe valve 601 are closed, and the rest of the inlet and outlet pipe valves are opened. Part of the water flow enters through the filter inlet pipe 3, is filtered by the filter cartridge 1 and then enters the water distributor tank body 2, and flows out through the outlet pipe 8 after being mixed with other water flows. The impurities in the water are enriched inside the filter cartridge 1. During backwashing, the control valve of the filter inlet pipe 3 and the drain pipe valve 601 are closed, the sewage discharge pipe valve 501 and the rest of the inlet and outlet pipe valves are opened. At this time, the positive pressure water flow in the water collector enters the inside of the filter cartridge through the water collector tank body 2 and the filter cartridge 1, and is discharged through the sewage discharge pipe valve 501, performing backwashing on the porous filter cartridge 102 and discharging the sewage through the sewage outlet.

[0056] It should be noted that the drain pipe valve 601 is normally closed and the drain pipe is only opened when the system needs to drain the water flow. The sewage discharge pipe can undertake part of the draining function, but due to the resistance of the water flow through the filter cartridge, the overall flow rate will be less than the drainage of the drain pipe. Therefore, the drain pipe undertakes the main draining function. For the entire water collector, the system is filled with water, the water in the water collector is pressurized, and at the same time, the circulating water system is provided with a constant pressure makeup water device. When the system performs backwashing and sewage discharge, the water pressure decreases, and the constant pressure makeup water will start to ensure the pressure inside the system.

[0057] Furthermore, when it is necessary to perform maintenance on the filter cartridge 1, close all the inlet and outlet pipe valves, close the maintenance valve 303, remove the filter cartridge maintenance section 302, and take out the filter cartridge 1.

[0058] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. The preferred embodiments of the present utility model are shown in the drawings, but they do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structures directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields are similarly within the scope of the patent protection of the present utility model.

Claims

1. A circulating chilled water manifold, comprising a manifold tank body, wherein a common water inlet pipe, a sub-manifold pressure balance pipe, a water outlet pipe and an exhaust pipe are arranged at the top of the manifold tank body, and an air discharge pipe is arranged at the bottom of the manifold tank body, characterized in that: The water collector tank is also provided with a filter water inlet, a filter cartridge and a sewage discharge pipe; One end of the filter cartridge is connected to the filter water inlet pipe at the filter water inlet, and the other end is in extrusion contact with the inner bottom of the water collector tank; the filter water inlet pipe is a chilled water inlet pipe; The sewage discharge pipe is located directly below the filter cartridge and is communicated with the filter cartridge.

2. A circulating chilled water collector according to claim 1, characterized in that: The filter cartridge comprises a fixing flange, a porous filter cartridge, a sewage outlet and a gasket; The fixing flange is connected to the top of the porous filter cartridge, and the filter cartridge is fixed to the filter water inlet of the water collector tank through the fixing flange; The sewage outlet is located at the bottom of the porous filter cartridge; the sewage outlet is inserted into the sewage pipe; The gasket is arranged at the bottom of the porous filter cartridge, and the gasket is in compression contact with the inner bottom of the water collector tank body to close the gap between the bottom of the filter cartridge and the inner bottom of the water collector tank body.

3. A circulating chilled water collector according to claim 2, characterized in that: The porous filter cartridge is made of stainless steel, has holes only on the side, and no filter holes are arranged at the portion where the upper portion of the porous filter cartridge overlaps with the filter water inlet.

4. A circulating chilled water collector according to claim 3, characterized in that: The wall thickness of the porous filter cartridge is within the range of 0-5 mm, and the pore diameter of the filter holes is within the range of 0-5 mm.

5. A circulating chilled water collector according to claim 2, characterized in that: The bottom of the porous filter cartridge is inclined toward the center and is funnel-shaped, and the sewage outlet is located at the center of the bottom of the porous filter cartridge.

6. A circulating chilled water collector according to claim 2, characterized in that: The outer wall of the bottom of the porous filter cartridge extends 3-5 cm out of the bottom of the cartridge to fix the gasket.

7. A circulating chilled water collector according to claim 2, characterized in that: The filter cartridge is also provided with a filter cartridge maintenance section; The lower part of the filter cartridge inspection section is connected to the filter cartridge via a flange, and the upper part of the filter cartridge inspection section is connected to the filter water inlet pipe via a flange. The filter water inlet pipe is provided with an inspection valve.

8. A circulating chilled water collector according to claim 7, characterized in that: The length of the filter cartridge inspection section is greater than the overall length of the filter cartridge.

9. A circulating chilled water collector according to claim 2, characterized in that: The sewage discharge pipe is arranged at the lowest point of the bottom of the water collector tank and is located directly below the sewage discharge port of the filter cartridge; A sewage pipe valve is provided at the sewage pipe outlet to control the opening and closing of water flow; During normal operation, the drain pipe valve is closed. When the filter cartridge is backwashed, the drain pipe valve is opened, and the positive pressure water flow in the water collector tank enters the filter cartridge to backwash the porous filter cartridge and discharge the sewage through the drain port.

10. A circulating chilled water collector according to claim 1, characterized in that: The common water inlet pipe, the filtered water inlet pipe, the manifold pressure balance pipe, the water outlet pipe and the exhaust pipe are all provided with control valves.

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