External cold water forebay filter screen cleaning device based on negative pressure reverse flow type phase modifier

Abstract

The utility model relates to the technical field of phase modifier outer cold water forebay filter screen cleaning, and discloses a negative pressure reverse flow type phase modifier outer cold water forebay filter screen cleaning device which comprises a water flow channel, a filter screen body is arranged in the water flow channel, and an opening and closing plate assembly is arranged on one side of the filter screen body. The opening and closing plate assembly is composed of a rotating shaft, a first opening and closing plate and a second opening and closing plate, and the first opening and closing plate and the second opening and closing plate are rotationally installed on the rotating shaft; according to the utility model, through a negative pressure reverse flow mode, the automatic cleaning of the filter screen body is realized, the cleaning efficiency is greatly improved, and the manual intervention is reduced, so that the labor cost and the cleaning time are reduced, and the maintenance cost is reduced; potential safety hazards caused by manual lifting of the filter screen body and operation beside a water pool are avoided, and operation safety is improved; by adjusting the position of the baffle and rotation of the opening and closing plate assembly, all areas of the filter screen can be comprehensively cleaned, and the cleaning effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the phase modifier external cooling water forebay filter screen cleaning technical field, concretely is a kind of based on negative pressure countercurrent type phase modifier external cooling water forebay filter screen cleaning device. BACKGROUND

[0002] The external cooling water system of phase modifier is the important component part for maintaining the safe and stable operation of phase modifier in normal temperature range.According to the abnormal fault of slowly rising outlet pressure of external cooling water circulating pump caused by phase modifier station, it is analyzed that the packing debris has blocked external cooling water forebay filter screen, electric water filter and each subsystem cooler, so it is crucial to protect the first line of defense of external cooling water filter screen cleaning.

[0003] The external cooling water forebay filter screen is a rectangular metal mesh structure, which plays a role in filtering cooling water and blocking and adsorbing particulate matter, flocculent and other water dregs during the normal operation of phase modifier group, and with the passage of time of equipment operation, the particulate matter is more and more, and when it reaches a certain degree, it will block the forebay filter screen, which may cause the water flow of external cooling water forebay filter screen to be not smooth, and may affect the normal operation of phase modifier group, so it is necessary to clean the impurities in external cooling water forebay filter screen frequently.

[0004] Currently, the filter screen is usually hoisted out periodically, and the impurities on the filter screen are cleaned by manual flushing, which has the following shortcomings:

[0005] 1) It needs to be cleaned 2 times a week, and 4 people need to work at the same time, which takes about 2 hours, and has the problems of time-consuming, labor-intensive, low efficiency and the like;

[0006] 2) The filter screen is heavy, and frequent hoisting may damage the surrounding building foundation, and may cause personal injury if it falls, and the workers work at the edge of the pool, which is easy to slip and has very low safety factor;

[0007] 3) During the emptying period of filter screen hoisting, various dregs in water pass into the forebay, and there is the risk of missing the fish.

[0008] Therefore, a negative pressure countercurrent type phase modifier external cooling water forebay filter screen cleaning device is designed. UTILITY MODEL CONTENTS

[0009] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a negative pressure countercurrent type phase modifier external cooling water forebay filter screen cleaning device, which effectively solves the problems in the above background.

[0010] To achieve the above object, the utility model provides the following technical scheme: A filter screen cleaning device for front pool of external cold water of negative pressure backflow type phase modifier, including water flow channel, the inside of water flow channel is equipped with filter screen body, one side of filter screen body is equipped with open and close board subassembly, open and close board subassembly is by pivot, first open and close board and second open and close board constitute, first open and close board and second open and close board are rotatably installed on pivot, and first open and close board and second open and close board can rotate around pivot, open and close board subassembly initial state is folded and is parallel with water flow direction, when first open and close board and second open and close board rotate and unfold and form 90 DEG, can form a dregs cleaning area with one side wall of water flow channel and filter screen body, and the first open and close board, second open and close board and wall surface of water flow channel of dregs cleaning area form area as three -sided airtight, one side of water flow channel is equipped with filter assembly, is used for sucking dregs cleaning area and realizes negative pressure backflow, and water flow flows from the other side of filter screen body to dregs cleaning area and cleans dregs;

[0011] Filter screen body far from open and close board subassembly's one side is equipped with several baffle, baffle upper portion is equipped with anti-falling hole, baffle is attached to filter screen body, and the size of water flow opening is matched when backflow, the size of backflow opening is grasped in real time.

[0012] Preferably, the filter assembly comprises a box body, both sides of the inside of the box body are provided with a bracket, the upper end of the bracket is provided with a dregs filter box, one side of the upper end of the box body is provided with a top plate, the upper end of the top plate is provided with a suction pump, the input end of the suction pump is connected with a suction pipe, one end of the suction pipe is arranged in the dregs cleaning area, the output end of the suction pump is connected with an output pipe, and the output pipe is arranged in the dregs filter box.

[0013] Preferably, one end of the suction pipe is connected with a suction cover.

[0014] Preferably, one side of the dregs filter box is communicated with a blowdown pipe, the other side of the dregs filter box is communicated with a water outlet pipe, and the outer ends of the blowdown pipe and the water outlet pipe are connected with control valves.

[0015] Preferably, the width of the open and close board subassembly when unfolded by 180 degrees is the same as the width of the filter screen body.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. The utility model realizes the automatic cleaning of the filter screen body by the negative pressure backflow mode, greatly improves the cleaning efficiency, reduces the manual intervention, thereby reducing the labor cost and the cleaning time, and reducing the maintenance cost.

[0018] 2. The novel device avoids the safety hazards caused by manually lifting the filter screen body and working at the pool side, and improves the operation safety.

[0019] 3、The novel can realize the overall cleaning of each area of the filter screen by adjusting the position of the baffle and the rotation of the opening and closing plate assembly, and ensure the cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application.

[0021] In the drawings:

[0022] Figure 1 is a structural schematic view of the present application;

[0023] Figure 2 is a structural schematic view of another perspective of the present application;

[0024] Figure 3 is a top view of the present application;

[0025] Figure 4 is a structural schematic view of a filter assembly of the present application;

[0026] In the drawing: 1, water flow channel; 2, filter screen body; 3, opening and closing plate assembly; 31, rotating shaft; 32, first opening and closing plate; 33, second opening and closing plate; 4, dregs cleaning area; 5, filter assembly; 51, box body; 52, bracket; 53, dregs filter box; 54, top plate; 55, suction pump; 56, suction pipe; 57, output pipe; 58, absorption cover; 59, blowdown pipe; 510, water outlet pipe; 511, control valve; 6, baffle; 7, anti-falling hole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Embodiment one, by Figures 1-4The utility model provides a filter screen body 2 is equipped with in the water flow channel 1, the filter screen body 2 one side is equipped with open and close board subassembly 3, open and close board subassembly 3 is by pivot 31, first open and close board 32 and second open and close board 33 constitutes, first open and close board 32 and second open and close board 33 rotation is installed on pivot 31, and first open and close board 32 and second open and close board 33 can rotate around pivot 31, open and close board subassembly 3 initial state is folded and is parallel with water flow direction, first open and close board 32 and second open and close board 33 rotate and unfold and form 90 when DE, can with one side wall of water flow channel 1 and filter screen body 2 form a dregs cleaning area 4, and the first open and close board 32, second open and close board 33 of dregs cleaning area 4 and the wall of water flow channel 1 form area are three close, one side of water flow channel 1 is equipped with filter assembly 5, is used for the suction of dregs cleaning area 4 realizes negative pressure backflow, and water flows from the other side of filter screen body 2 to dregs cleaning area 4 and flows and cleans dregs;

[0029] The filter screen body 2 is movably provided with a plurality of baffles 6 on the side away from the open and close board subassembly 3, the upper portion of each baffle 6 is provided with a falling prevention hole 7, the baffle 6 is attached to the filter screen body 2, and the size of the water flow opening is matched with the negative pressure backflow, so that the size of the backflow opening can be adjusted in real time.

[0030] The filter assembly 5 comprises a box body 51, both sides of the box body 51 are provided with a bracket 52, the bracket 52 is provided with a dregs filter box 53 at the upper end, one side of the upper end of the box body 51 is provided with a top plate 54, the top plate 54 is provided with a suction pump 55 at the upper end, the suction pump 55 is connected with a suction pipe 56 at the input end, one end of the suction pipe 56 is arranged in the dregs cleaning area 4, the suction pump 55 is connected with an output pipe 57 at the output end, and the output pipe 57 is arranged in the dregs filter box 53.

[0031] The suction pump 55 can suck and transport the water containing dregs in the dregs cleaning area 4 to the dregs filter box 53, and the dregs can be filtered and retained in the dregs filter box 53, when the dregs filter box 53 accumulates a large amount of dregs, another dregs filter box 53 can be replaced at any time, the dregs in the filtered dregs filter box 53 can be poured at a designated position for subsequent centralized treatment, and the filtering operation can be continuously performed without interruption.

[0032] One end of the suction pipe 56 is connected with a suction cover 58, so that the dregs can be easily sucked.

[0033] One side of the dregs filter box 53 is connected with a sewage discharge pipe 59, the other side of the dregs filter box 53 is connected with a water outlet pipe 510, and the outer ends of the sewage discharge pipe 59 and the water outlet pipe 510 are connected with a control valve 511; the sewage discharge pipe 59 is used for discharging dirt, the water outlet pipe 510 is used for discharging water after filtering dregs, and the control valve 511 is used for controlling the opening and closing of the sewage discharge pipe 59 and the water outlet pipe 510. In addition, in the device, the position of the sewage discharge pipe 59 is lower than that of the water outlet pipe 510.

[0034] The width of the open-close plate assembly 3 when unfolded by 180° is the same as the width of the filter screen body 2.

[0035] Working principle:

[0036] Before cleaning the filter screen body 2, the open-close plate assembly 3 is originally placed vertically (parallel to the water flow direction) at the middle line of the plane of the filter screen body 2, and the two first open-close plates 32 and the second open-close plate 33 are overlapped, one of which is opened and presented at 90°, forming three closed surfaces with the wall, at this time, the water flow in the other half of the filter screen body 2 does not affect the water flow in the entire water flow channel 1.

[0037] During the cleaning of the filter screen body 2, the suction pipe 56 of the filter assembly 5 is placed in the above-mentioned enclosed dregs cleaning area 4, and the suction pump 55 of the filter assembly 5 is started to suck water, as the water is sucked away, the liquid level in the dregs cleaning area 4 also decreases, forming a negative pressure environment, which will form a negative pressure backflow on the side of the filter screen body 2 formed by the fourth surface, at this time, the dregs during the previous equipment operation will be backwashed under the action of the negative pressure backflow, after several repeated negative pressure backflows, most of the algae, foreign matter and other dregs in the filter screen body 2 will be cleaned.

[0038] After the above-mentioned preliminary cleaning, the baffle 6 is placed on one side of the filter screen body 2 to control the position of the negative pressure backflow port, and the dregs in the stubborn area of the filter screen body 2 are again cleaned, finally reaching the standard of cleaning the filter screen body 2 to meet the requirements;

[0039] After half of the filter screen body 2 is cleaned, the open-close plate assembly 3 is rotated and adjusted to the other half of the filter screen body 2, the first open-close plate 32 and the second open-close plate 33 are still presented at 90° and form three closed surfaces with the wall, at this time, the water flow in the water flow channel 1 is automatically switched to the other side, and the above-mentioned cleaning process of the filter screen body 2 is repeated until the filter screen body 2 is cleaned to the standard.

[0040] After the cleaning of the filter screen body 2 is completed, the open-close plate assembly 3 is folded and combined together and placed vertically (parallel to the water flow direction) at the middle line of the plane of the filter screen body 2.

Claims

1. A filter cleaning device for the external cooling water forebay based on a negative pressure counter-current condenser, comprising a water flow channel (1), characterized in that: The water flow channel (1) is equipped with a filter body (2). A hinged plate assembly (3) is provided on one side of the filter body (2). The hinged plate assembly (3) consists of a rotating shaft (31), a first hinged plate (32), and a second hinged plate (33). The first hinged plate (32) and the second hinged plate (33) are rotatably mounted on the rotating shaft (31) and can rotate around the rotating shaft (31). In the initial state, the hinged plate assembly (3) is folded and parallel to the direction of water flow. The first hinged plate (32) and the second hinged plate (33) are rotatably mounted on the rotating shaft (31) and can rotate around the rotating shaft (31). When the two hinged plates (33) are rotated and unfolded to form a 90° angle, they can form a slag cleaning area (4) with one of the walls of the water flow channel (1) and the filter screen body (2). The area formed by the first hinged plate (32), the second hinged plate (33) and the wall of the water flow channel (1) in the slag cleaning area (4) is three-sided sealed. A filter assembly (5) is provided on one side of the water flow channel (1) to suck up the slag cleaning area (4) to achieve negative pressure counterflow. The water flows from the other side of the filter screen body (2) to the slag cleaning area (4) to clean the slag. The filter screen body (2) is provided with several baffles (6) on the side away from the composite plate assembly (3). The baffles (6) are provided with anti-fall holes (7) on the upper part. The baffles (6) are in contact with the filter screen body (2) and are coordinated with the size of the water flow opening when the negative pressure counterflow occurs, so as to control the size of the counterflow opening in real time.

2. The device for cleaning the filter screen of the external cooling water forebay based on a negative pressure counter-current condenser according to claim 1, characterized in that: The filter assembly (5) includes a housing (51), with brackets (52) on both sides inside the housing (51). A slag filter box (53) is provided at the upper end of the brackets (52). A top plate (54) is provided on one side of the upper end of the housing (51). A suction pump (55) is installed at the upper end of the top plate (54). The input end of the suction pump (55) is connected to a suction pipe (56). One end of the suction pipe (56) is placed in the slag cleaning area (4). The output end of the suction pump (55) is connected to an output pipe (57), which is located inside the slag filter box (53).

3. The cleaning device for the external cooling water forebay of a negative pressure counter-current condenser according to claim 2, characterized in that: One end of the inhalation tube (56) is connected to an absorption cover (58).

4. A filter cleaning device for the external cooling water forebay based on a negative pressure counter-current condenser according to claim 2, characterized in that: One side of the sludge filter box (53) is connected to a drain pipe (59), and the other side of the sludge filter box (53) is connected to a water outlet pipe (510). The outer ends of the drain pipe (59) and the water outlet pipe (510) are both connected to control valves (511).

5. The device for cleaning the filter screen of the external cooling water forebay based on a negative pressure counter-current condenser according to claim 1, characterized in that: The width of the hinged plate assembly (3) when it is unfolded to 180° is the same as the width of the filter body (2).

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