Sand prevention device for cooling tower

Abstract

The utility model discloses a sand prevention device for a cooling tower, which comprises a filter box, the inside of the filter box is hollow, a drain outlet is arranged on the surface of the front end of the filter box, a filter screen is arranged in the filter box, a cleaning device is arranged above the filter box, an adjusting pipe is arranged at the bottom end of the filter box, the surface of the adjusting pipe is rotatably connected with an outer gear ring, and the outer gear ring is rotatably connected with the filter box. An outer gear ring is arranged on the inner side of the adjusting pipe, an inner gear ring is arranged on the surface of the outer gear ring, the interior of the adjusting pipe is hollow, rotating shafts are arranged on the front side and the rear side of the interior of the adjusting pipe, and the rotating shafts are rotationally connected with the adjusting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling tower sand prevention and discloses a cooling tower sand prevention device. Background Art

[0002] The working principle of the cooling tower is essentially the process of heat exchange between circulating cooling water and cold air. The cooling tower is equipped with an air inlet. The cold air outside the tower enters the tower and comes into contact with the circulating water, which serves the purpose of lowering the temperature of the cooling water. If the environment in which the cooling tower is located is often affected by sandstorms, the sand and dust in the air will enter the tower through the air inlet. Over time, a large amount of sand and dust will accumulate in the cooling tower, causing blockage of the tower's filler and seriously affecting the performance of the cooling tower.

[0003] The patent number CN208505098U in the prior art introduces a sand prevention device for a cooling tower, including a pipe fitting, a mounting plate is matched and installed inside the pipe fitting, an opening is provided on the side of the mounting plate, a filter screen is matched and installed inside the opening, a plurality of fixing mechanisms are connected between the filter screen and the mounting plate, the fixing mechanism includes a spiral tube, the spiral tube is installed through the side of the mounting plate, a screw is threadedly connected inside the spiral tube, a fixing plate is installed at one end of the screw, one end of the fixing plate extends to one side of the filter screen, a movable plate is sleeved at the other end of the screw, one end of the movable plate extends to the other side of the filter screen, a locking nut is threadedly connected at the other end of the screw, and the side of the locking nut contacts the side of the movable plate. The utility model has a simple structure and is easy to use. It not only filters the wind and sand, but also facilitates the removal and installation of the filter screen.

[0004] However, the patents in the prior art have the following disadvantages:

[0005] (1) When the prior art patent is in use, the filter screen needs to be disassembled for cleaning, which makes the cleaning of the filter screen more complicated and inconvenient, and increases the workload of cleaning the filter screen of the sand prevention device.

[0006] (2) When the patent in the prior art is used, the function is relatively simple and the air volume cannot be adjusted. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a sand prevention device for a cooling tower which can not only automatically clean the filter screen but also adjust the air volume.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a sand prevention device for a cooling tower, comprising a filter box, the filter box is hollow inside, a sewage outlet is provided on the front end surface of the filter box, a filter screen is provided inside the filter box, a cleaning device is provided above the filter box, an adjusting tube is provided at the bottom end of the filter box, an outer gear ring is rotatably connected to the surface of the adjusting tube, an inner gear ring is provided on the surface of the outer gear ring, the adjusting tube is hollow inside, and rotating shafts are provided on the front and rear sides of the adjusting tube, and the rotating shaft is rotatably connected to the adjusting tube.

[0009] Furthermore, the cleaning device includes a first motor, the first motor is fixedly connected to the filter box, and the front end of the first motor is connected to two driving wheels located in the same straight line.

[0010] Furthermore, the driving wheel is rotatably connected to the filter box, screws are provided on both left and right sides of the inside of the filter box, a driven wheel is provided at the rear end of the screw, and the screw is rotatably connected to the filter box.

[0011] Furthermore, a belt is provided on the surface of the driving wheel, and the belt is sleeved on the driven wheel. A scraper is provided on the upper end of the filter screen, and both left and right ends of the scraper are threadedly connected to the screw rod.

[0012] Furthermore, a first gear is disposed at the upper end of the rotating shaft, the first gear meshes with the internal gear ring, and a windshield is connected to the upper end of the rotating shaft, and the windshield passes through the regulating tube.

[0013] Furthermore, a second motor is disposed on the left end surface of the filter box, a second gear is connected to the bottom end of the second motor, and the second gear meshes with the outer gear ring.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] (1) The utility model solves the problem that the existing anti-sand device for cooling tower cannot be automatically cleaned by providing a cleaning device. The first motor can drive the driving wheel to rotate, and the driving wheel drives the screw to rotate through the belt and the driven wheel, thereby causing the scraper to move on the surface of the filter screen, pushing the dust on the surface of the filter screen to the sewage outlet, thereby achieving automatic cleaning.

[0016] (2) The utility model solves the problem that the existing anti-sand device for cooling tower cannot adjust the air volume by providing a movable wind shield. The second motor can drive the second gear to rotate, and then drive the first gear to rotate through the outer gear ring and the inner gear ring. The first gear further drives the wind shield to rotate through the rotating shaft. The wind shield can block the air outlet, thereby adjusting the air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a sand prevention device for a cooling tower according to the utility model;

[0018] Figure 2 This is a front view of a sand prevention device for a cooling tower according to the utility model;

[0019] Figure 3 It is a top view cross-sectional view of a sand prevention device for a cooling tower according to the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of a regulating pipe of a sand prevention device for a cooling tower according to the utility model;

[0021] Figure 5 The utility model is a kind of anti-sand device for cooling tower Figure 3 Enlarged view of point A in the middle;

[0022] Among them: 1. filter box; 101. sewage outlet; 2. filter net; 3. cleaning device; 301. first motor; 302. driving wheel; 303. screw; 304. driven wheel; 305. belt; 306. scraper; 4. adjusting tube; 401. outer gear ring; 402. inner gear ring; 403. rotating shaft; 404. first gear; 405. wind shield; 406. second motor; 407. second gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 A sand prevention device for a cooling tower includes a filter box 1, which is characterized in that: the filter box 1 is hollow inside, and a sewage outlet 101 is provided on the front end surface of the filter box 1 for discharging sand. A filter screen 2 is provided inside the filter box 1 for filtering out sand in the air. A cleaning device 3 is provided above the filter box 1 for cleaning the filter screen 2. An adjusting tube 4 is provided at the bottom end of the filter box 1, and an outer gear ring 401 is rotatably connected to the surface of the adjusting tube 4. An inner gear ring 402 is provided on the surface of the outer gear ring 401. Both the outer gear ring 401 and the inner gear ring 402 can rotate on the surface of the adjusting tube 4. The adjusting tube 4 is hollow inside, and a rotating shaft 403 is provided on the front and rear sides of the adjusting tube 4. The rotating shaft 403 is rotatably connected to the adjusting tube 4.

[0025] Specifically, a first gear 404 is provided at the upper end of the rotating shaft 403, and the first gear 404 engages with the inner gear ring 402. The first gear 404 will rotate with the inner gear ring 402. A wind shield 405 is connected to the upper end of the rotating shaft 403, and the wind shield 405 passes through the regulating tube 4. The wind shield 405 can rotate inside the regulating tube 4 to shield the inside of the regulating tube 4. A second motor 406 is provided on the left end surface of the filter box 1, and a second gear 407 is connected to the bottom end of the second motor 406. The second gear 407 engages with the outer gear ring 401, and the second motor 406 can drive the second gear 407 to rotate and then drive the outer gear ring 401 to rotate.

[0026] Through the above technical solution, the second motor 406 can drive the second gear 407 to rotate, and then drive the first gear 404 to rotate through the outer gear ring 401 and the inner gear ring 402. The first gear 404 further drives the wind shield 405 to rotate through the rotating shaft 403, thereby adjusting the air output.

[0027] Specifically, the cleaning device 3 includes a first motor 301, which is fixedly connected to the filter box 1. The front end of the first motor 301 is connected to two driving wheels 302 located in the same straight line. The first motor 301 can control the rotation of the driving wheel 302, and the driving wheel 302 is rotatably connected to the filter box 1. There are screws 303 on both sides of the left and right sides of the filter box 1, and a driven wheel 304 is arranged at the rear end of the screw 303. The screw 303 is rotatably connected to the filter box 1. A belt 305 is arranged on the surface of the driving wheel 302, and the belt 305 is sleeved on the driven wheel 304. The driving wheel 302 can drive the driven wheel 304 through the belt 305. A scraper 306 is arranged on the upper end of the filter net 2. The left and right ends of the scraper 306 are threadedly connected to the screw 303, and the scraper 306 will move with the rotation of the screw 303.

[0028] Through the above technical solution, the first motor 301 can drive the driving wheel 302 to rotate, and the driving wheel 302 drives the screw 303 to rotate through the belt 305 and the driven wheel 304, thereby making the scraper 306 move on the surface of the filter screen 2, pushing the dust on the surface of the filter screen 2 to the sewage outlet 101, thereby realizing automatic cleaning.

[0029] When in use, the regulating pipe 4 is connected to the air inlet of the cooling tower, and the filter 2 can filter out sand in the air. When sand accumulates on the filter 2, the first motor 301 is started to drive the driving wheel 302 to rotate, and the driving wheel 302 drives the screw 303 to rotate through the belt 305 and the driven wheel 304, so that the scraper 306 moves on the surface of the filter 2, and the dust on the surface of the filter 2 is pushed to the sewage outlet 101. When the air volume needs to be adjusted, the second motor 406 is started to drive the second gear 407 to rotate, and then the first gear 404 is driven to rotate through the outer gear ring 401 and the inner gear ring 402, and the first gear 404 further drives the wind shield 405 to rotate through the rotating shaft 403, so as to adjust the size of the air volume.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sand prevention device for a cooling tower, comprising a filter box (1), characterized in that: The filter box (1) is hollow inside, a sewage outlet (101) is provided on the front surface of the filter box (1), a filter screen (2) is provided inside the filter box (1), a cleaning device (3) is provided above the filter box (1), an adjusting tube (4) is provided at the bottom end of the filter box (1), an outer gear ring (401) is rotatably connected to the surface of the adjusting tube (4), an inner gear ring (402) is provided on the surface of the outer gear ring (401), the adjusting tube (4) is hollow inside, a rotating shaft (403) is provided on the front and rear sides of the adjusting tube (4), and the rotating shaft (403) is rotatably connected to the adjusting tube (4).

2. A cooling tower sand prevention device according to claim 1, characterized in that: The cleaning device (3) comprises a first motor (301), the first motor (301) is fixedly connected to the filter box (1), and the front end of the first motor (301) is connected to two driving wheels (302) located in the same straight line.

3. A cooling tower sand prevention device according to claim 2, characterized in that: The driving wheel (302) is rotatably connected to the filter box (1); screw rods (303) are provided on both left and right sides of the filter box (1); a driven wheel (304) is provided at the rear end of the screw rod (303); and the screw rod (303) is rotatably connected to the filter box (1).

4. A cooling tower sand prevention device according to claim 3, characterized in that: The surface of the driving wheel (302) is provided with a belt (305), and the belt (305) is sleeved on the driven wheel (304). The upper end of the filter screen (2) is provided with a scraper (306), and the left and right ends of the scraper (306) are both threadedly connected to the screw rod (303).

5. The anti-sand device for a cooling tower according to claim 1, characterized in that: The upper end of the rotating shaft (403) is provided with a first gear (404), the first gear (404) meshes with the internal gear ring (402), and the upper end of the rotating shaft (403) is connected with a windshield (405), and the windshield (405) passes through the regulating tube (4).

6. The anti-sand device for a cooling tower according to claim 1, characterized in that: The left end surface of the filter box (1) is provided with a second motor (406), the bottom end of the second motor (406) is connected to a second gear (407), and the second gear (407) is meshed with the outer gear ring (401).

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