Circulating water inlet filtering device and circulating water system of cooling water tower

Abstract

The utility model belongs to circulating water filtering device technical field, concretely relates to circulating water inlet filtering device and circulating water system of cooling water tower, the circulating water inlet filtering device, including filter part, hand chain block, two sliding tracks, the left and right sides of filter part are connected with corresponding sliding track sliding respectively, the top of filter part is connected to hand chain block. The utility model circulating water inlet filtering device can intercept the particulate matter in circulating water, prevents sundries from entering circulating water system, damages circulating water pump impeller and pollutes heat exchange equipment, and need not stop operating entire circulating water system, can clean double -deck filter screen, realizes online cleaning, solved the problem that traditional filter cannot clean in operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of circulating water filtration devices, specifically relating to circulating water inlet filtration devices and circulating water systems of cooling towers. Background Technology

[0002] In power and chemical industries, natural draft cooling towers and mechanical draft cooling towers are commonly used to treat circulating cooling water. During the continuous circulation of this circulating cooling water, due to the combined effects of factors such as water temperature rise, flow rate changes, evaporation, concentration of various inorganic ions and organic substances, outdoor sunlight exposure, wind and rain, dust and debris ingress, as well as equipment structure and materials, serious deposits, equipment corrosion, and the proliferation of bacteria and algae can occur. The resulting particulate matter can clog pipes, accelerate pump impeller wear, and cause safety hazards.

[0003] like Figure 1 The diagram shown is a structural diagram of the circulating water system of a cooling tower. Currently, most circulating water systems are located at the inlet of the circulating water pump or in the forebay (…). Figure 1 A single-layer filter screen is installed in the circulating water tank to remove particulate matter from the circulating water. However, as the usage time increases, more and more particulate matter adheres to the inlet filter screen, and it cannot be cleaned online during the operation of the circulating water system. This eventually affects the water flow at the inlet of the circulating water pump, causing the circulating water pump to puncture and be damaged. At the same time, it will cause the heat exchange equipment downstream of the circulating water system to not reach the required efficiency, affecting the service life of the heat exchange equipment. Utility Model Content

[0004] The problem this invention aims to solve is that particulate matter gradually accumulates on the filter screen of traditional filters, affecting the operation of the circulating water system, and there is a deficiency that it cannot be cleaned online during system operation.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] Firstly,

[0007] This utility model provides a circulating water inlet filtration device, including a filter component, a hand chain hoist, and two sliding rails. The left and right sides of the filter component are slidably connected to the corresponding sliding rails, and the top of the filter component is connected to the hand chain hoist.

[0008] Furthermore, the filter element includes an outer ring and a double-layer filter screen connected to the inside of the outer ring.

[0009] Furthermore, the double-layer filter consists of a first filter layer and a second filter layer that can be detachably connected, with the mesh size of the first filter layer being larger than that of the second filter layer.

[0010] Further, the mesh of the first layer filter screen is set to be greater than or equal to 100 mesh and less than 200 mesh.

[0011] Further, the mesh of the first layer filter screen is set to be 120 mesh.

[0012] Further, the mesh of the second layer filter screen is set to be greater than or equal to 40 mesh and less than 100 mesh.

[0013] Further, the mesh of the second layer filter screen is set to be 80 mesh.

[0014] Further, a suspension beam is arranged between the top of the two sliding rails, and a hook in the hand chain block is connected to the suspension beam.

[0015] Further, the filter part further comprises a hanging ear arranged at the top of the outer ring, and a lifting chain in the hand chain block is connected to the hanging ear.

[0016] The second aspect,

[0017] The utility model provides a circulating water system of cooling water tower, including circulating water pump suction, with circulating water pump suction rear end connection's circulating water pipeline, circulating water pump suction installs above circulating water inlet filter device, first layer filter screen is located second layer filter screen outside, second layer filter screen is used for sticking in circulating water pump suction place.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a circulating water inlet filter device, installs in circulating water pump suction place, when circulating water passes through circulating water inlet filter device and enters circulating water pipeline, the double layer filter screen of filter part can be particulate in circulating water, prevents sundries and enters circulating water system, damages circulating water pump impeller and pollutes heat exchange equipment, when the insufficient flow of circulating water inlet, operates hand chain block, draws out along the sliding rail of its both sides to filter part, clears away the particle and adhering matter on the surface of double layer filter screen, after cleaning, filter part relies on gravity and falls, returns to the original position and uses again, does not need to stop circulating water system to clean double layer filter screen, realizes on -line cleaning, solved the difficult problem that traditional filter cannot clean in operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure schematic view of circulating water system of cooling water tower of the utility model;

[0021] Figure 2 It is the front view of circulating water inlet filter device of the utility model;

[0022] Figure 3 It is the left view of circulating water inlet filter device of the utility model;

[0023] Reference signs:

[0024] 11 is a circulating water pipeline; 12 is a circulating water pump suction inlet;

[0025] 20 is a filter part; 21 is an outer ring; 22 is a double-layer filter screen; 221 is a first layer filter screen; 222 is a second layer filter screen; 23 is a hanging ear; 30 is a hand-operated hoist; 31 is a lifting hook; 32 is a lifting chain; 40 is a sliding rail; 50 is a suspension beam. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly below in combination with the drawings. Obviously, the described embodiments are not all the embodiments of the present application, and all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0027] It should be noted that the terms "center", "upper", "lower", "horizontal", "left", "right", "front", "rear", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] Embodiment 1

[0029] In combination with the drawings shown in Figure 2 , Figure 3 The present application provides a circulating water inlet filter device, which comprises a filter part 20 for installation on the circulating water pump suction inlet 12.

[0030] The filter part 20 comprises an outer ring 21 and a double-layer filter screen 22 connected inside the outer ring 21. The outer ring 21 serves as the main frame of the filter part 20, and fixes and supports the double-layer filter screen 22.

[0031] The double-layer filter screen 22 is a double-layer detachable filter screen, comprising a first layer filter screen 221 and a second layer filter screen 222. The first layer filter screen 221 is located outside the second layer filter screen 222, and the second layer filter screen 222 is attached to the circulating water pump suction inlet 12. The circulating water pump suction inlet 12 is connected to the circulating water pipeline 11. The circulating water filtered by the double-layer filter screen 22 flows to the circulating water pipeline 11.

[0032] The mesh size of the first layer filter screen 221 is larger than that of the second layer filter screen 222. The first layer filter screen 221 is used to intercept larger particles in the circulating water, and the second layer filter screen 222 is used to further intercept smaller particles after passing through the first layer filter screen 221, so as to ensure the cleanliness of the water entering the circulating water pump. Through this double-layer filtering mode, the filtering efficiency can be greatly improved, and the water quality entering the circulating water pump is ensured to be clean, thereby prolonging the service life of the circulating water pump.

[0033] The mesh size of the first layer filter screen 221 is greater than or equal to 40 mesh and less than 100 mesh. The mesh size of the second layer filter screen 222 is greater than or equal to 100 mesh and less than 200 mesh.

[0034] In a specific embodiment, the mesh size of the first layer filter screen 221 is 80 mesh (indicating 80 meshes per inch), and the mesh size of the second layer filter screen 222 is 120 mesh (indicating 120 meshes per inch). When the circulating water passes through the filtering component 20, the particles entrained in the water are intercepted by the first layer filter screen 221, and the slightly smaller particles are intercepted by the second layer filter screen 222.

[0035] The circulating water inlet filtering device further comprises a chain hoist 30 and sliding rails 40 arranged on the left and right sides of the filtering component 20. The outer ring 21 of the filtering component 20 is slidably connected to the sliding rails 40, and the outer ring 21 of the filtering component 20 can move along the sliding rails 40.

[0036] The filtering component 20 further comprises an ear 23 arranged at the top of the outer ring 21. A suspension beam 50 is arranged between the tops of the two sliding rails 40. A hook 31 in the chain hoist 30 is connected to the suspension beam 50, and a lifting chain 32 of the chain hoist 30 is connected to the ear 23. By operating the chain hoist 30, the filtering component 20 slides along the sliding rails 40 on both sides.

[0037] When the circulating water inlet flow is insufficient, on the operation platform, the chain hoist 30 at the top is operated to pull out the filtering component 20 along the sliding rails 40 on both sides, so as to clean the particles and attachments on the surface of the double-layer filter screen 22.

[0038] After cleaning, the filtering component 20 falls by gravity and is reloaded into the circulating water pump suction inlet 12 for continuous use, without the need to shut down the entire circulating water system for cleaning the filter screen.

[0039] At the same time, the double-layer filter screen 22 can be regularly cleaned according to the operation of the circulating water system, so as to ensure the quality of the circulating water entering the circulating water system and reduce the influence of particulate matter on the safe operation of the heat exchange equipment.

[0040] The utility model discloses a filter screen with proper aperture, which can effectively filter particulate matters in circulating water and will not affect the efficiency of the heat exchange equipment due to the small aperture.

[0041] The utility model can be installed in most circulating water systems to solve the problem of preliminary filtration of particulate matters in circulating water and ensure the safe and economic operation of the circulating water system.

[0042] The utility model discloses a simple structure and convenient operation for filtering particulate matters in the circulating water system.

[0043] Embodiment 2

[0044] A circulating water system of a cooling water tower comprises a circulating water pump suction inlet 12, a circulating water pipeline 11 connected to the rear end of the circulating water pump suction inlet 12, and the circulating water inlet filter device of embodiment 1 is installed on the circulating water pump suction inlet 12.

[0045] The above technical features constitute the best embodiment of the utility model, which has strong adaptability and the best implementation effect, and unnecessary technical features can be added or reduced according to actual needs to meet the needs of different situations.

[0046] Finally, it should be noted that the above content is only used to explain the technical scheme of the utility model, and is not a limitation on the protection scope of the utility model. Simple modifications or equivalent replacements of the technical scheme of the utility model by those skilled in the art do not deviate from the essence and scope of the utility model.

Claims

1. A circulating water inlet filter apparatus, characterized by, The filter component (20), the hand chain hoist (30) and the two sliding rails (40) are included, the filter component (20) is slidably connected with the corresponding sliding rail (40) on the left and right sides respectively, and the top of the filter component (20) is connected to the hand chain hoist (30).

2. The circulating water inlet filter apparatus of claim 1, wherein The filter component (20) includes an outer ring (21) and a double-layer filter screen (22) connected inside the outer ring (21).

3. The circulating water inlet filter apparatus of claim 2, wherein, The double-layer filter screen (22) is composed of a first layer filter screen (221) and a second layer filter screen (222) connected detachably, and the mesh size of the first layer filter screen (221) is larger than that of the second layer filter screen (222).

4. The circulating water inlet filter apparatus of claim 3, wherein The mesh size of the first layer filter screen (221) is set to be greater than or equal to 40 meshes and less than 100 meshes.

5. The circulating water inlet filter apparatus of claim 4, wherein, The mesh size of the first layer filter screen (221) is set to be 80 meshes.

6. The circulating water inlet filter apparatus of claim 3, wherein The mesh size of the second layer filter screen (222) is set to be greater than or equal to 100 meshes and less than 200 meshes.

7. The circulating water inlet filter apparatus of claim 6, wherein The mesh size of the second layer filter screen (222) is set to be 120 meshes.

8. The circulating water inlet filter apparatus of claim 1, wherein, The two sliding rails (40) are provided with a suspension beam (50) between the tops, and the hook (31) in the hand chain hoist (30) is connected to the suspension beam (50).

9. The circulating water inlet filter apparatus of claim 2, wherein, The filter component (20) further includes a hanging ear (23) arranged at the top of the outer ring (21), and the hoisting chain (32) in the hand chain hoist (30) is connected with the hanging ear (23).

10. A circulating water system for cooling a water tower, comprising a circulating water pump suction inlet (12), a circulating water pipe (11) connected to the rear end of the circulating water pump suction inlet (12), characterized in that, The circulating water pump suction inlet (12) is provided with the circulating water inlet filter device of claim 3, the first layer filter screen (221) is located outside the second layer filter screen (222), and the second layer filter screen (222) is used to be attached to the circulating water pump suction inlet (12).

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