Filtering device of industrial circulating cooling water system

Abstract

The utility model provides a filter device of an industrial circulating cooling water system, the industrial circulating cooling water system comprises a circulating water pool with a water outlet on one side pool wall, the filter device comprises a 10mm * 10mm square hole filter screen which covers the water outlet and is fixed on the pool wall where the water outlet is located; the filter screen frame is arranged in front of the water outlet direction of the water outlet, and the side face of the first frame is tightly attached to the pool wall where the water outlet is located and tightly presses the 10mm * 10mm square hole filter screen; the 12mm * 12mm square hole filter screen is detachably connected to the rest frame side surfaces, except the first frame side surface, of the filter screen frame; and the 7mm * 7mm flexible square hole filter screen covers the periphery of the 12mm * 12mm square hole filter screen through the flexibility of the 7mm * 7mm flexible square hole filter screen. The filtering device is excellent in filtering effect, simple in structure and easy to disassemble and clean, and the probability that the heat exchange tube nest of the condenser is blocked is reduced.

Description

Technical Field

[0001] The utility model relates to the field of coke dry quenching systems, and particularly to a filtering device for an industrial circulating cooling water system. Background Art

[0002] At present, the heat exchange of the heat exchanger of the coke dry quenching condenser equipment of Hengchang Coking Co., Ltd. adopts an indirect cooling open circulating cooling water system. The primary water is filtered by a flotation tank and then enters the suction well through a booster pump. The circulating return water after being pressurized to 0.4 - 0.6 MPa by a circulating water pump and entering equipment such as the condenser enters a cooling tower, is sprayed for heat dissipation and cooling, then enters a circulating water tank on the second floor (7.5 m high), and flows into the suction well by using the head difference for recycling. During the heat dissipation process, the sprayed water passes through a packing layer (made of composite plastic). At the same time, since there is air participating in the cooling process in the circulating water tank, the sediment, broken packing and other sundries in the air are mixed into the circulating water tank together. To intercept such sundries, the filtering device of the existing system (as shown in Figure 2 ) is provided with a square-hole filter screen with a specification of 15 mm * 15 mm at the lower water pipe orifice. However, because the square-hole filter screen has relatively large pores and a soft material, the interception effect is poor, and it is extremely easy to cause broken packing and sundries entrained in the air to enter the next process and block the heat exchange tubes of the condenser, resulting in poor heat exchange effect. Moreover, due to uneven heat exchange, the heat exchange tubes of the condenser are prone to scaling.

[0003] In view of this, this application is specifically proposed. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a filtering device for an industrial circulating cooling water system. This filtering device not only has excellent filtering effect, reduces the probability of blockage of the heat exchange tubes of the condenser, but also has a simple structure and is easy to disassemble and clean.

[0005] To achieve the above effects, the technical solution adopted by the utility model is as follows:

[0006] A filtering device for an industrial circulating cooling water system, the industrial circulating cooling water system includes a circulating water tank with a water outlet on one side wall, and the filtering device includes:

[0007] A 10 mm * 10 mm square-hole filter screen, covering the water outlet and fixed on the pool wall where the water outlet is located;

[0008] A filter screen frame, arranged in front of the water outlet direction of the water outlet, and the side of the first frame is closely attached to the pool wall where the water outlet is located and presses the 10 mm * 10 mm square-hole filter screen;

[0009] A 12 mm * 12 mm square-hole filter screen, detachably connected to the remaining frame sides of the filter screen frame except the side of the first frame;

[0010] A 7mm*7mm flexible square-hole filter screen covers the outer periphery of the 12mm*12mm square-hole filter screen by its own flexibility.

[0011] As an implementation manner, fixing bolts are arranged on the pool wall where the water outlet is located, and the 10mm*10mm square-hole filter screen is fixed on the fixing bolts.

[0012] As an implementation manner, the 12mm*12mm square-hole filter screen is connected to the filter screen frame through a plurality of buckles.

[0013] As an implementation manner, the filter screen frame is a cuboid frame welded by a 50mm*50mm square steel pipe.

[0014] As an implementation manner, the 12mm*12mm square-hole filter screen is detachably connected to the left side, right side, and front side of the filter screen frame.

[0015] As an implementation manner, the fixing bolts are M8*40mm stainless steel bolts, which are evenly welded on the outer periphery of the water outlet.

[0016] As an implementation manner, the industrial circulating cooling water system is a direct cooling open type or an indirect cooling open type industrial circulating cooling water system.

[0017] The utility model has the following advantages:

[0018] 1. The filtering device of the utility model not only fundamentally ensures the filtering effect, but also has a simple structure and is convenient to clean. The square-hole filter screen in the filtering device can be regularly removed and thoroughly cleaned with water.

[0019] 2. After the utility model is put into use, when the downstream process cleans and inspects equipment such as pipelines, filters, plate heat exchangers, and heat exchange tubes in condensers, it is found that the broken packing and fine sundries are significantly reduced, and the frequency of cleaning pipelines, filters, and plate heat exchangers is reduced.

[0020] In this way, the stability of the circulating water is ensured, and at the same time, the heat exchange effect of heat exchange equipment such as condensers is ensured.

[0021] Other features and advantages of the utility model will be described in the subsequent specification, and part of them will be obvious from the specification, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures specifically pointed out in the specification, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the technical solution of the present utility model, and constitute a part of the description. Together with the embodiments of the present application, they are used to explain the technical solution of the present utility model, and do not constitute a limitation to the technical solution of the present utility model.

[0023] Figure 1 It is a schematic structural view of the filtering device of the industrial circulating cooling water system in the present utility model.

[0024] Figure 2 It is a schematic view of the filtering structure of the existing industrial circulating cooling water system.

[0025] Marking description:

[0026] 1 - Water outlet; 2 - Circulation pool; 3 - 15mm * 15mm square hole filter screen; 4 - Square hole filter screen frame; 5 - 10mm * 10mm square hole filter screen; 6 - 12mm * 12mm square hole filter screen; 7 - 7mm * 7mm flexible square hole filter screen; 8 - Buckle; 9 - Fixed bolt. Specific implementation manner

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1

[0029] A filtering device for an industrial circulating cooling water system, as Figure 1 shown, the industrial circulating cooling water system includes a circulation pool 2 provided with a water outlet 1 on one side wall, and the filtering device includes:

[0030] A 10mm * 10mm square hole filter screen 5, covering the water outlet 1 and fixed on the pool wall where the water outlet 1 is located;

[0031] A filter screen frame, arranged in front of the water outlet direction of the water outlet 1, and the first frame side surface (the "first" here is only for facilitating the distinction and description with other side surfaces) is closely attached to the pool wall where the water outlet 1 is located and presses the 10mm * 10mm square hole filter screen 5;

[0032] A 12mm * 12mm square hole filter screen 6, detachably connected to the remaining frame side surfaces of the filter screen frame except the first frame side surface;

[0033] The 7mm×7mm flexible square-hole filter screen 7 covers the outer periphery of the 12mm×12mm square-hole filter screen 6 through its own flexibility.

[0034] As a specific example, fixing bolts 9 are provided on the pool wall where the water outlet 1 is located, and the 10mm×10mm square-hole filter screen 5 is fixed to the fixing bolts 9.

[0035] As a specific example, the 12mm×12mm square-hole filter screen 6 is connected to the filter screen frame through a plurality of buckles 8.

[0036] As a specific example, the filter screen frame is a cuboid frame welded by a 50mm×50mm square steel pipe.

[0037] As a specific example, the 12mm×12mm square-hole filter screen 6 is detachably connected to the left side, right side, and front side of the filter screen frame.

[0038] As a specific example, the fixing bolt 9 is an M8×40mm stainless steel bolt, which is evenly welded on the outer periphery of the water outlet 1.

[0039] The following is a specific description in combination with the situation of a certain circulating water pool 2 in this factory area:

[0040] A plurality of M8×40mm stainless steel bolts are evenly welded around the DN750 water outlet 1 as the support for installing and fixing the 10mm×10mm square-hole filter screen 5, and then a 1-square-meter 10mm×10mm square-hole filter screen 5 (made of stainless steel) is installed here. The utility model uses the wall surface of the circulating water pool 2 where the water outlet 1 is provided as the support, and at the same time uses M8×40mm stainless steel bolts to press and fix, which can form a good secondary interception and reduces the use of auxiliary components or structures as much as possible.

[0041] A 50mm×50mm square steel pipe is used in front of the water outlet direction of the DN750 water outlet 1 to prefabricate a 1-cubic-meter cube filter screen frame. The 4mm-thick, 12mm×12mm square-hole filter screen 6 is fixed to the left side, right side, and front side of the cube filter screen frame through portable stainless steel buckles 8, thus forming a three-dimensional, three-sided filtering space.

[0042] Since the volume of some broken packing materials and sundries such as sediment and poplar floss entrained in the air is very small, there is still a possibility of penetrating the square-hole filter screen, and at the same time, factors such as not increasing the drainage resistance need to be considered. Therefore, a layer of 7mm*7mm flexible square-hole filter screen 7 (i.e., 7mm*7mm stainless steel industrial sieve) is further covered outside the filtering space formed by the 12mm*12mm square-hole filter screen 6. After such a design, there are three layers of square-hole filter screens with different aperture sizes, namely 10mm*10mm, 12mm*12mm, and 7mm*7mm, in front of the DN750 water outlet 1 for filtering and interception, significantly improving the filtering effect, reducing the probability of clogging of the heat exchange tubes of the condenser, and preventing scaling.

[0043] The filtering device of the present utility model can be generally applied to direct-cooling open-type and indirect-cooling open-type industrial circulating cooling water systems.

[0044] Although the embodiments disclosed in the present utility model are as above, the content described is only the embodiments adopted for facilitating the understanding of the present utility model, and is not used to limit the present utility model. Any person skilled in the art within the scope of the present utility model can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present utility model. However, the scope of patent protection of the present utility model shall still be subject to the scope defined by the appended claims.

Claims

1. A filtering device for an industrial circulating cooling water system, characterized in that: The industrial circulating cooling water system comprises a circulating water pool with a water outlet provided on one side of the pool wall, and the filtering device comprises: A 10mm*10mm square hole filter screen covers the drain outlet and is fixed on the pool wall where the drain outlet is located; The filter screen frame is arranged in front of the water outlet in the water outlet direction, and the side surface of the first frame is close to the pool wall where the water outlet is located and presses the 10mm*10mm square hole filter screen; A 12mm*12mm square hole filter, detachably connected to the remaining frame sides of the filter frame except the first frame side; The 7mm*7mm flexible square hole filter screen covers the outer periphery of the 12mm*12mm square hole filter screen through its own flexibility.

2. The filtering device for an industrial circulating cooling water system according to claim 1, characterized in that: A fixing bolt is arranged on the pool wall where the water outlet is located, and the 10mm*10mm square hole filter is fixed on the fixing bolt.

3. The filtering device for an industrial circulating cooling water system according to claim 1, characterized in that: The 12mm*12mm square hole filter is connected to the filter frame through a plurality of buckles.

4. The filtering device for an industrial circulating cooling water system according to claim 1, characterized in that: The filter frame is a rectangular frame welded from 50mm*50mm square steel pipes.

5. The filtering device for the industrial circulating cooling water system according to claim 4, characterized in that: The 12mm*12mm square hole filter is detachably connected to the left side, right side, and front side of the filter frame.

6. The filtering device for an industrial circulating cooling water system according to claim 2, characterized in that: The fixing bolts are M8*40mm stainless steel bolts, which are evenly welded on the outer periphery of the drain.

7. The filtering device for an industrial circulating cooling water system according to any one of claims 1 to 6, characterized in that: The industrial circulating cooling water system is a direct cooling open type or an indirect cooling open type industrial circulating cooling water system.

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