Coarse water filter

Abstract

The utility model discloses a coarse water filter which comprises a filter body and a filter screen, and a hollow part is arranged on the filter screen; the net wall, around the hollow part, of the filter net abuts against the inner wall of the filter body; an inner cavity of the filter body is divided into a pre-filtering area and a post-filtering area by the filter screen; a filter screen base is arranged in the filter body, a cover plate is arranged at the top of the filter body, and the filter screen is clamped between the cover plate and the filter screen base; and a basket handle is arranged on the filter screen. The device can effectively filter and cool seawater impurities, so that the impurities on the filter screen are not easy to attach, the maintenance period of the filter is prolonged, the service life of the cooling water pump is prolonged, and the device has practical significance; daily maintenance of sailors is facilitated, and accidents caused by misoperation of the sailors can be avoided; in addition, installation and use of a marine organism prevention device can be considered, a ventilation pipeline is also considered, and the effect that one device has multiple purposes is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, and particularly relates to a coarse water filter. Background Art

[0002] Due to its large heat capacity and easy availability at sea, seawater is generally used as the cooling medium for the main equipment on board (main engine, auxiliary engine, shafting, air conditioner, refrigeration, air compressor, etc.) during the current ship design. It directly cools the equipment through a seawater cooler, or exchanges heat with cooling fresh water through a central cooler, and the cooling fresh water cools the equipment to take away the heat dissipated during the operation of the equipment, ensuring the reliable and stable operation of the equipment.

[0003] However, when a ship sucks in seawater as cooling water, it is inevitable to suck in some impurities such as sea creatures or plants. These impurities are generally filtered out when passing through the coarse water filter on the seawater main pipe. For ships sailing in some sea areas, there may be more impurities in the cooling seawater, and some of them may adhere to the filter mesh. If not maintained and cleaned regularly, it may lead to too small a flow area of the filter, too high an inhalation resistance of the cooling seawater pump, and even cavitation phenomenon, resulting in equipment failure and affecting the normal operation of the ship.

[0004] Existing coarse water filters have traditional forms such as concentric filter cylinders and arc-shaped filter meshes. Existing ship standards such as CBM1061 - 1981, CB / T497 - 1994, CB4217 - 2013 and some enterprise standards have design structures that can filter some impurities in seawater.

[0005] Existing coarse water filters have the following defects: For ships sailing in sea areas with more impurities in seawater, the maintenance cycle time of the filter mesh is short, and the workload of cleaning impurities is large. At the same time, for the installation and operation scenarios of anti-sea creature devices currently installed in seawater tanks, standardization cannot be achieved, increasing the construction workload of shipyards, and there may be problems such as crew operation errors, which may lead to equipment damage and the risk of the ship being unable to operate normally. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the above-mentioned defects existing in the prior art and provide a coarse water filter.

[0007] The utility model solves the above technical problem through the following technical solutions:

[0008] A coarse water filter, which comprises a filter body and a filter screen disposed inside the filter body. The filter screen is provided with a hollowed-out portion that communicates with the water inlet of the filter body; the mesh wall of the filter screen around the hollowed-out portion abuts against the inner wall of the filter body; the filter screen divides the inner cavity of the filter body into a pre-filtering area for receiving seawater before filtration and a post-filtering area for receiving seawater after filtration; a filter screen base is provided inside the filter body, and a cover plate is provided at the top of the filter body. The filter screen is clamped between the cover plate and the filter screen base; the filter screen is provided with a basket handle that can be used as a gripping part when the filter screen is separated from the filter body.

[0009] Furthermore, both the connection between the filter screen and the filter body and the connection between the cover plate and the filter body are detachable connections.

[0010] Furthermore, the filter screen is cylindrical.

[0011] Furthermore, the filter screen is disposed inside the filter body in an eccentric manner.

[0012] Furthermore, the basket handle is provided at the top of the filter screen.

[0013] Furthermore, a filter screen support member is provided on the inner wall of the filter screen, and the filter screen support members are vertically distributed.

[0014] Furthermore, a filter screen positioning pin is provided between the inner wall of the filter screen and the inner wall of the filter body to limit the position of the filter screen inside the filter body; the filter screen positioning pin is fixedly connected to the inner wall of the filter body.

[0015] Furthermore, the position where the filter screen positioning pin abuts against the filter screen is located at the upper part of the filter screen.

[0016] Furthermore, an external device installation interface for installing an anti-marine organism device is provided on the cover plate.

[0017] Furthermore, a vent flange for connecting a breather valve or a breather pipeline is provided on the cover plate.

[0018] The beneficial effects of the present utility model are as follows: The coarse water filter of the present utility model can effectively filter the impurities in the cooling seawater, making it difficult for impurities to adhere to the filter screen, extending the maintenance cycle of the filter, extending the service life of the cooling water pump, and having practical significance; it is also convenient for crew members to perform daily maintenance and can avoid accidents caused by crew operation errors; in addition, it can also accommodate the installation and use of an anti-marine organism device and a breather pipeline, achieving the effect of "one device with multiple functions". BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional view of a preferred embodiment of the present utility model.

[0020] Figure 2 It is a schematic longitudinal-sectional view of a preferred embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following is a preferred embodiment, and the present utility model will be described more clearly and completely in conjunction with the accompanying drawings.

[0022] As Figure 1 and Figure 2 shown, a coarse water filter includes a filter body 10 and a filter screen 20 disposed inside the filter body. The filter body 10 is provided with a water inlet 11 and a water outlet 12. The filter screen 20 is in a cylindrical shape.

[0023] The filter screen 20 is provided with a hollowed-out portion 21 that communicates with the water inlet 11 of the filter body; the mesh wall of the filter screen 20 around the hollowed-out portion abuts against the inner wall of the filter body 10.

[0024] The filter screen 20 divides the inner cavity of the filter body into a pre-filter area 31 for receiving seawater before filtration and a post-filter area 32 for receiving seawater after filtration. The filter screen 20 is disposed inside the filter body 10 in an eccentric manner.

[0025] A filter screen base 22 is provided inside the filter body 10, and a cover plate 13 is provided at the top of the filter body 10. The filter screen 20 is clamped between the cover plate 13 and the filter screen base 22.

[0026] Both the connection between the filter screen 20 and the filter body 10 and the connection between the cover plate 13 and the filter body 10 are detachable connections.

[0027] The filter screen 20 is provided with a basket handle 23 that can be used as a gripping part when the filter screen is separated from the filter body. In a preferred solution, the basket handle 23 is disposed at the top of the filter screen 20.

[0028] The inner wall of the filter screen 20 is provided with a filter screen support member 24, and the filter screen support member 24 is vertically distributed.

[0029] A filter screen positioning pin 25 is provided between the filter screen 20 and the inner wall of the filter body 10 to limit the position of the filter screen inside the filter body; the filter screen positioning pin 25 is fixedly connected to the inner wall of the filter body 10.

[0030] In a preferred solution, the position where the filter screen positioning pin 25 abuts against the filter screen 20 is located at the upper part of the filter screen.

[0031] The cover plate 13 is provided with an external device installation interface 14 for installing an anti-marine organism device. The cover plate 13 is also provided with a vent flange 15 for connecting a breather valve or a breather pipeline.

[0032] Figure 1 and Figure 2 In, the arrow indicates the direction of seawater flow.

[0033] When the rough water filter is working, the seawater flowing in from the water inlet 11 of the filter body passes through the hollow part 21 of the filter screen and then enters the pre-filter area 31 of the inner cavity of the filter body. The seawater filtered by the filter screen enters the post-filter area 32 of the inner cavity of the filter body and flows out through the water outlet 12 of the filter body.

[0034] In this technical solution, an eccentric filter cartridge is adopted. Compared with the arc-shaped filter screen, it increases the seawater flow area and improves the filtration efficiency. Compared with the concentric filter screen, it makes it difficult for impurities to adhere to the filter screen and extends the maintenance period of the filter.

[0035] The filter screen adopts a basket design, eliminating the need to operate the residues on the filter screen in the filter body. The maintenance method is simple, facilitating the daily maintenance of the crew and reducing the maintenance workload of the crew. By setting the filter screen positioning pins and the filter screen base, the filter screen can be effectively fixed.

[0036] On the cover plate of the filter, there are also reserved installation ports for anti-fouling devices of different models, reducing the construction workload of the shipyard. And there is also an air release port flange. When installing, a breather valve and a breather pipe (extended to a certain height) are connected to timely discharge the gas in the filter and avoid the risk of being sucked into the seawater pump.

[0037] The rough water filter of the present utility model can effectively filter the impurities in the cooling seawater, making it difficult for impurities to adhere to the filter screen, extending the maintenance period of the filter, and prolonging the service life of the cooling water pump, which has practical significance. It is also convenient for the daily maintenance of the crew and can avoid accidents caused by crew operation errors. In addition, it can also take into account the installation and use of the anti-fouling device and the breather pipe, achieving the effect of "one device with multiple functions".

[0038] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A coarse water filter, comprising a filter body and a filter screen arranged in the filter body, characterized in that: The filter screen is provided with a hollow portion which is connected with the water inlet of the filter body; the mesh wall of the filter screen around the hollow portion is in contact with the inner wall of the filter body; the filter screen divides the inner cavity of the filter body into a pre-filtration area for receiving the seawater before filtration and a post-filtration area for receiving the seawater after filtration; a filter screen base is provided in the filter body, a cover plate is provided on the top of the filter body, and the filter screen is clamped between the cover plate and the filter screen base; a basket handle is provided on the filter screen which can be used as a gripping part when the filter screen is separated from the filter body; the filter screen is eccentrically arranged in the filter body; an external equipment installation interface for installing a marine biological prevention device is provided on the cover plate; and a vent flange for connecting to a vent valve or a vent pipe is provided on the cover plate.

2. The coarse water filter according to claim 1, characterized in that The filter screen and the filter body, as well as the cover plate and the filter body are all detachably connected.

3. The coarse water filter according to claim 1, characterized in that The filter is cylindrical.

4. The coarse water filter according to claim 1, characterized in that The basket handle is located on the top of the filter.

5. The coarse water filter according to claim 1, characterized in that The inner wall of the filter is provided with filter support members, and the filter support members are distributed vertically.

6. The coarse water filter according to claim 1, characterized in that A filter positioning pin capable of limiting the position of the filter in the filter body is arranged between the filter and the inner wall of the filter body; the filter positioning pin is fixedly connected to the inner wall of the filter body.

7. The coarse water filter according to claim 6, characterized in that The position where the filter positioning pin abuts against the filter is located at the upper part of the filter.

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