A closed cooling tower dust protection grille

Abstract

The utility model relates to the technical field of closed cooling towers, and in particular to a closed cooling tower anti-sand and dust grille, comprising an installation frame arranged at the air inlet of the closed cooling tower, a movable groove being provided at the inner top of the installation frame, a baffle being fixedly connected to the top of the movable groove, filter screens for filtering sand and dust being symmetrically provided on both sides of the baffle, and a striking ball for vibrating the filter screen being provided on both sides of the baffle. By abutting the top of the aggregate plate against the bottom of a plurality of filter screens, the sand and dust entering the interior of the installation frame can pass through a plurality of filter screens in sequence, and will not directly pass through the last filter screen, thereby improving the filtering effect of the sand and dust; the striking ball will intermittently hit the filter screen, and the filter screen will continuously vibrate and shake off the sand and dust attached to the filter screen, thereby preventing the filter screen from being blocked by sand and dust, thereby ensuring the normal filtering of the sand and dust by the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of closed cooling towers, in particular to a closed cooling tower anti-sand and dust grille. Background Art

[0002] A closed cooling tower, also known as an evaporative air cooler, places a tubular heat exchanger inside the tower. The cooling effect is ensured by heat exchange between circulating air, spray water and circulating water. Because it is a closed cycle, it can ensure that the water quality is not polluted, which well protects the efficient operation of the main equipment and increases its service life. When the outside temperature is low, the spray water system can be stopped to save water. In recent years, closed cooling towers have been widely used in metallurgy, aviation, electric power, chemical industry, machinery, petroleum, food, plastics, rubber and other industries.

[0003] After searching, the patent document with application number CN202321802723.4 discloses a dust-proof grille for a closed cooling tower, which is arranged at the air inlet of the closed cooling tower, and includes a mounting frame and a filter assembly. The mounting frame is formed by four rectangular plates connected end to end in sequence, and the two ends of the mounting frame are respectively set as the air inlet end and the air outlet end. The air inlet end is connected to a baffle for controlling the size of the air inlet end, and the filter assembly includes a fixed plate, a fixed frame and a filter net.

[0004] In the above-mentioned prior art, although the sand and dust can be filtered through multiple filters, the multiple filters cannot filter the sand and dust in sequence. After some sand and dust enter the installation frame, they may directly pass through the last filter from the bottom of the installation frame, which will lead to poor filtering effect of the sand and dust; at the same time, after long-term use, the filter may be blocked by some sand and dust, which will affect the filtering of the sand and dust by the filter. Therefore, a closed cooling tower anti-sand and dust grille is now proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that multiple filter screens cannot filter the sand and dust in sequence, and after some sand and dust enter the installation frame, they may directly pass through the last filter screen from the bottom of the installation frame, resulting in poor filtering effect on the sand and dust. A closed cooling tower anti-sand and dust grille is proposed to solve the problem.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A closed cooling tower anti-dust grille net comprises an installation frame arranged at the air inlet of the closed cooling tower, a movable groove is opened at the inner top of the installation frame, a baffle is fixedly connected to the top of the movable groove, filter screens for filtering sand and dust are symmetrically arranged on both sides of the baffle, striking balls for vibrating the filter screens are arranged on both sides of the baffle, and a wavy aggregate plate is fixedly connected to the inner wall of the installation frame.

[0008] Preferably, a mounting opening is provided on one side of the mounting frame, and a protective net is provided inside the mounting opening.

[0009] Preferably, the inner wall of the movable groove is symmetrically fixedly connected with a fixing rod, the filter is slidably connected to the fixing rod, the fixing rods located on both sides of the baffle are sleeved with a first spring and a second spring, one of the filters located on one side of the baffle is fixedly connected to the first spring, one end of the first spring is fixedly connected to the baffle, the other filter located on one side of the baffle is fixedly connected to the second spring, and one end of the second spring is fixedly connected to the inner wall of the movable groove.

[0010] Preferably, a first servo motor fixedly connected to the top of the movable groove is arranged between the two filters located on both sides of the baffle, a rotating rod is arranged at the output end of the first servo motor, a connecting rod is fixedly connected to the outer wall of the rotating rod, and one end of the connecting rod is fixedly connected to the hitting ball.

[0011] Preferably, the bottom of the collecting plate is provided with evenly distributed discharge ports, the inner wall of the discharge port is slidably connected with a sealing plate, and the inner wall of the installation frame is symmetrically provided with limiting grooves that slide with the sealing plate.

[0012] Preferably, a second servo motor is fixedly connected to the inner wall of the installation frame, an output end of the second servo motor is provided with a rotating rod rotatably connected to the inner wall of the installation frame, and an outer wall of the rotating rod is eccentrically fixedly connected with evenly distributed eccentric wheels.

[0013] Preferably, the bottom of the filter screen is slidably connected to the top of the collecting plate, the collecting plate is fixedly connected to a fixing plate on the side away from the protective net, the bottom and both sides of the fixing plate are fixedly connected to the inner wall of the mounting frame, and one side of the fixing plate is fixedly connected to an inclined discharge plate.

[0014] Preferably, a discharge port is provided at the inner bottom of the installation frame, a sliding groove is provided on one side of the discharge port, and a movable plate slidingly connected to the inner wall of the discharge port is slidably connected to the inner wall of the sliding groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When the equipment is in use, the top of the aggregate plate is against the bottom of multiple filter screens, so that the sand and dust entering the installation frame can pass through multiple filter screens in sequence and will not directly pass through the last filter screen, thereby improving the filtering effect of sand and dust.

[0017] 2. When the equipment is in use, the first servo motor will control the uniform rotation of the hitting ball through the rotating rod and the connecting rod. The hitting ball will intermittently hit the filter, and the filter will continuously vibrate and shake off the sand and dust attached to the filter, thus preventing the filter from being blocked by sand and dust, thereby ensuring the normal filtration of sand and dust by the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the external three-dimensional structure of a closed cooling tower anti-sand and dust grille proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of a closed cooling tower dust-proof grille proposed by the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the connection between the first spring, the second spring and the fixing rod.

[0021] In the figure: 1 mounting frame, 2 moving groove, 3 baffle, 4 filter, 5 striking ball, 6 collecting plate, 7 protection net, 8 fixing rod, 9 first spring, 10 second spring, 11 first servo motor, 12 connecting rod, 13 discharge port, 14 sealing plate, 15 limiting groove, 16 second servo motor, 17 rotating rod, 18 eccentric wheel, 19 fixing plate, 20 discharge plate, 21 discharge port, 22 movable plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-Figure 3 A closed cooling tower anti-dust grille comprises an installation frame 1 arranged at the air inlet of the closed cooling tower, a movable groove 2 is opened on the inner top of the installation frame 1, a baffle 3 is fixedly connected to the top of the movable groove 2, filter screens 4 for filtering sand and dust are symmetrically arranged on both sides of the baffle 3, and striking balls 5 for vibrating the filter screen 4 are arranged on both sides of the baffle 3, and a wavy aggregate plate 6 is fixedly connected to the inner wall of the installation frame 1.

[0024] It should be noted that the specific model specifications of the first servo motor 11 and the second servo motor 16 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it is not repeated, and both can be powered by external devices and controlled to be turned on and off;

[0025] Furthermore, a mounting opening is provided on one side of the mounting frame 1, and a protective net 7 is provided inside the mounting opening;

[0026] It should be noted that the protective net 7 can prevent animals from entering the installation frame 1 , thus protecting the dust grille, and dust wind can also enter through the protective net 7 .

[0027] Furthermore, the inner wall of the movable groove 2 is symmetrically fixedly connected with a fixing rod 8, the filter screen 4 is slidably connected to the fixing rod 8, and the fixing rods 8 located on both sides of the baffle plate 3 are sleeved with a first spring 9 and a second spring 10, one of the filter screens 4 located on one side of the baffle plate 3 is fixedly connected to the first spring 9, one end of the first spring 9 is fixedly connected to the baffle plate 3, and the other filter screen 4 located on one side of the baffle plate 3 is fixedly connected to the second spring 10, and one end of the second spring 10 is fixedly connected to the inner wall of the movable groove 2;

[0028] It should be noted that the first spring 9 and the second spring 10 can fix the position of the filter screen 4 and can reset the filter screen 4 after being squeezed and moved.

[0029] Furthermore, a first servo motor 11 fixedly connected to the top of the moving groove 2 is disposed between the two filter screens 4 on both sides of the baffle 3, a rotating rod is disposed at the output end of the first servo motor 11, a connecting rod 12 is fixedly connected to the outer wall of the rotating rod, and one end of the connecting rod 12 is fixedly connected to the hitting ball 5;

[0030] It should be noted that the striking ball 5 is made of rubber, which is elastic and relatively soft, and when the connecting rod 12 controls the striking ball 5 to rotate, it can intermittently strike the filter screen 4 and make the filter screen 4 vibrate continuously, so as to shake off the sand and dust attached to the filter screen 4;

[0031] It should be noted that when the hitting ball 5 hits the filter 4, the filter 4 will move in a small range along the fixed rod 8, and the bottom of the filter 4 will move in a small range on the top of the aggregate plate 6. The bottom of the filter 4 will not leave the top of the aggregate plate 6 and will still be in contact with the top of the aggregate plate 6. This allows the sand and dust to pass through multiple filters 4 normally in sequence, thereby ensuring the filtering effect of the sand and dust.

[0032] Furthermore, the bottom of the collecting plate 6 is provided with evenly distributed discharge ports 13, the inner wall of the discharge port 13 is slidably connected with a sealing plate 14, and the inner wall of the installation frame 1 is symmetrically provided with limiting grooves 15 that slide with the sealing plate 14;

[0033] It should be noted that the sealing plate 14 can be stably moved up and down through the limiting groove 15 .

[0034] Furthermore, a second servo motor 16 is fixedly connected to the inner wall of the installation frame 1, and a rotating rod 17 rotatably connected to the inner wall of the installation frame 1 is provided at the output end of the second servo motor 16, and an eccentric wheel 18 evenly distributed is eccentrically fixedly connected to the outer wall of the rotating rod 17;

[0035] It should be noted that, by controlling the eccentric wheel 18 to slowly rotate 90°, the top of the eccentric wheel 18 no longer contacts the bottom of the sealing plate 14, and under the action of gravity, the sealing plate 14 moves out of the discharge port 13, so that the sand and dust accumulated above the collecting plate 6 can be discharged.

[0036] Furthermore, the bottom of the filter screen 4 is slidably connected to the top of the collecting plate 6, and a fixing plate 19 is fixedly connected to one side of the collecting plate 6 away from the protective net 7. The bottom and both sides of the fixing plate 19 are fixedly connected to the inner wall of the mounting frame 1, and one side of the fixing plate 19 is fixedly connected to an inclined discharge plate 20;

[0037] It should be noted that, through the inclined discharging plate 20 , the sand and dust discharged from the discharging port 13 can be discharged to the discharging port 21 , so that the sand and dust can be discharged from the inside of the installation frame 1 conveniently.

[0038] Furthermore, a discharge port 21 is provided at the inner bottom of the installation frame 1. A sliding groove is provided on one side of the discharge port 21, and a movable plate 22 that slides with the inner wall of the discharge port 21 is slidably connected to the inner wall of the sliding groove;

[0039] It should be noted that by moving the movable plate 22 out of the sliding groove, the sand and dust can be discharged from the interior of the installation frame 1 .

[0040] Working principle of this utility model:

[0041] First, by abutting the top of the collecting plate 6 against the bottom of the multiple filter screens 4, the sand and dust entering the installation frame 1 can pass through the multiple filter screens 4 in sequence, and will not directly pass through the last filter screen 4, thereby improving the filtering effect of the sand and dust;

[0042] Then, the first servo motor 11 controls the uniform rotation of the striking ball 5 through the rotating rod and the connecting rod 12, and the striking ball 5 intermittently strikes the filter screen 4, and the filter screen 4 continuously vibrates and shakes off the sand and dust attached to the filter screen 4, thereby preventing the filter screen 4 from being blocked by sand and dust, thereby ensuring that the filter screen 4 can filter the sand and dust normally;

[0043] Finally, the second servo motor 16 controls the multiple eccentric wheels 18 to rotate slowly through the rotating rod 17, and the sealing plate 14 is moved out from the discharge port 13. At this time, the sand and dust accumulated on the collecting plate 6 will be discharged from the discharge port 13, and then discharged to the discharge port 21 through the discharge plate 20, and then the sand and dust can be discharged through the discharge port 21.

[0044] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A closed cooling tower dust protection grille, comprising a mounting frame (1) arranged at an air inlet of the closed cooling tower, characterized in that: A movable groove (2) is provided at the inner top of the installation frame (1), a baffle (3) is fixedly connected to the top of the movable groove (2), filter screens (4) for filtering sand and dust are symmetrically arranged on both sides of the baffle (3), striking balls (5) for vibrating the filter screens (4) are arranged on both sides of the baffle (3), and a wavy aggregate plate (6) is fixedly connected to the inner wall of the installation frame (1).

2. The closed cooling tower anti-sand and dust grille according to claim 1, characterized in that: A mounting opening is provided on one side of the mounting frame (1), and a protective net (7) is provided inside the mounting opening.

3. The closed cooling tower anti-sand and dust grille according to claim 1, characterized in that: The inner wall of the movable groove (2) is symmetrically fixedly connected with a fixing rod (8), the filter screen (4) is slidably connected to the fixing rod (8), the fixing rods (8) located on both sides of the baffle (3) are sleeved with a first spring (9) and a second spring (10), one of the filter screens (4) located on one side of the baffle (3) is fixedly connected to the first spring (9), one end of the first spring (9) is fixedly connected to the baffle (3), the other filter screen (4) located on the other side of the baffle (3) is fixedly connected to the second spring (10), and one end of the second spring (10) is fixedly connected to the inner wall of the movable groove (2).

4. The closed cooling tower dust protection grille according to claim 1, characterized in that: A first servo motor (11) fixedly connected to the top of the movable groove (2) is provided between the two filter screens (4) located on both sides of the baffle (3); a rotating rod is provided at the output end of the first servo motor (11); a connecting rod (12) is fixedly connected to the outer wall of the rotating rod; and one end of the connecting rod (12) is fixedly connected to the striking ball (5).

5. The closed cooling tower dust protection grille according to claim 1, characterized in that: The bottom of the collecting plate (6) is provided with evenly distributed discharge openings (13), the inner wall of the discharge opening (13) is slidably connected to a sealing plate (14), and the inner wall of the installation frame (1) is symmetrically provided with limiting grooves (15) that slide with the sealing plate (14).

6. The closed cooling tower dust protection grille according to claim 1, characterized in that: A second servo motor (16) is fixedly connected to the inner wall of the installation frame (1); an output end of the second servo motor (16) is provided with a rotating rod (17) rotatably connected to the inner wall of the installation frame (1); and an outer wall of the rotating rod (17) is eccentrically fixedly connected to eccentric wheels (18) that are evenly distributed.

7. The closed cooling tower anti-sand and dust grille according to claim 1, characterized in that: The bottom of the filter screen (4) is slidably connected to the top of the collecting plate (6); a fixing plate (19) is fixedly connected to the side of the collecting plate (6) away from the protective net (7); the bottom and both sides of the fixing plate (19) are fixedly connected to the inner wall of the mounting frame (1); and a discharging plate (20) arranged obliquely is fixedly connected to one side of the fixing plate (19).

8. The closed cooling tower dust protection grille according to claim 1, characterized in that: The inner bottom of the installation frame (1) is provided with a discharge port (21), one side of the discharge port (21) is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to a movable plate (22) that slides with the inner wall of the discharge port (21).

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