Combined type fresh air ventilator filter screen

Abstract

The utility model relates to the technical field of air purification, and discloses a combined type fresh air ventilator filter screen which comprises an equipment shell, an air inlet is formed in the left end of the equipment shell, an air outlet is formed in the right end of the equipment shell, and the inner wall of the equipment shell is connected with a second pull block through a supporting assembly. A limiting block is connected to the left end of the second pull block through a fixing assembly, a clamping block is fixedly connected to the front end of the equipment shell, two threaded rods are fixedly connected to the right side of the inner wall of the second pull block, sleeves are in threaded connection to the outer walls of the threaded rods, and first pressing plates are rotationally connected to the left ends of the sleeves. According to the device, the filter screen is inserted between the fixing frame and the first pressing plate, the sleeve is rotated to enable the first pressing plate to clamp the filter screen, then the first pull block is pulled to push the fixing frame into the device shell, and the first pull block is loosened to enable the second pressing plate to push the filter screen to be attached to the clamping box under the elastic force action of the second spring; gaps between the filter screen and the inner wall of the equipment shell can be reduced, and the filtering effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of coking production devices, in particular to a combined fresh air fan filter. Background Art

[0002] When the indoor ventilation effect is not good, a fresh air system is usually installed to exchange indoor air with outdoor air to improve indoor air circulation. The fresh air system will purify the external air through the filter and enter the room.

[0003] After searching, a combined fresh air fan filter screen of announcement number CN220471793U includes an air intake device shell; a pair of connecting pipes are provided on the side wall of the air intake device shell; the connecting pipes are fixedly connected to the side wall of the air intake device shell; a pair of fixing frames are provided on the inner side wall of the air intake device shell; the fixing frame is fixedly connected to the inner side wall of the air intake device shell; a filter screen is provided on the inner side wall of the fixing frame; the filter screen is slidably connected to the inner side wall of the fixing frame; a groove is provided on the inner side wall of the fixing frame; a magnet is provided on the inner side wall of the groove; the magnet is fixedly connected to the inner side wall of the groove; a fixing block is provided on the inner side wall of the groove, and the fixing block squeezes the filter screen under the action of repulsive force, and then fixes the filter screen, thereby reducing the gap between the filter screen and the air intake device shell, improving the sealing effect of the filter screen, increasing the filtering effect of the filter screen, and thus increasing the use effect of the equipment;

[0004] Based on the above patent, there is a certain gap between the filter mentioned in the background technology and the inner wall of the air intake device shell, which leads to poor filtering effect of the filter. In this regard, in order to solve this technical problem, this application proposes a combined fresh air fan filter. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a combined fresh air fan filter screen, which can clamp the filter screen to reduce the gap with the inner wall of the equipment shell and improve the filtering effect.

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

[0007] A combined fresh air fan filter comprises an equipment shell, wherein the left end of the equipment shell is provided with an air inlet, the right end of the equipment shell is provided with an air outlet, the inner wall of the equipment shell is connected with a pull block 2 through a supporting assembly, the left end of the pull block 2 is connected with a limiting block through a fixing assembly, a clamping block is fixedly connected with the front end of the equipment shell, two threaded rods are fixedly connected with the right side of the inner wall of the pull block 2, the outer walls of the threaded rods are threadedly connected with sleeves, the left end of the sleeve is rotatably connected with a pressure plate 1, the left end of the pressure plate 1 is provided with a filter, the right end of the equipment shell is fixedly connected with a clamping box, and the inner wall of the clamping box is connected with a pull block 1 through a clamping assembly.

[0008] Furthermore, the support assembly includes a fixing frame slidably connected to the inner wall of the equipment housing, a telescopic rod is slidably connected to the inner wall of the fixing frame, and the rear end of the second pull block is fixedly connected to the front end of the fixing frame.

[0009] Furthermore, the fixing assembly includes a spring 1 fixedly connected to the left end of the pull block 2, the left end of the spring 1 is fixedly connected to a fixing block, and one opposite end of the fixing block is respectively fixedly connected to the upper and lower ends of the limit block.

[0010] Furthermore, the clamping assembly includes a connecting rod slidably connected to the inner wall of the clamping box, the left end of the pull block 1 is fixedly connected to the right end of the connecting rod, two springs 2 are fixedly connected to the right side of the inner wall of the clamping box, and the other end of the spring 2 is fixedly connected to a pressure plate 2.

[0011] Furthermore, an outer wall of the pressure plate is slidably connected to the inner wall of the fixing frame, the outer wall of the filter screen is arranged on the inner wall of the fixing frame, and the right side of the outer wall of the filter screen is arranged on the inner wall of the clamping box.

[0012] Furthermore, the right end of the telescopic rod is fixedly connected to the inner wall of the device housing.

[0013] Furthermore, the outer wall of the limit block is slidably connected to the second inner wall of the pull block, and the outer wall of the limit block is arranged on the inner wall of the clamping block.

[0014] Furthermore, the two outer walls of the pressing plate are slidably connected to the inner wall of the clamping box.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the device can clamp the filter screen by means of the cooperation of the pressure plate 1 with the filter screen, the fixing frame, the pull block 1, the connecting rod, the pressure plate 2, the clamping box, the sleeve, the threaded rod and the spring 2, so as to reduce the gap between the filter screen and the inner wall of the device housing and improve the filtering effect.

[0017] 2. In the utility model, the fixing frame cooperates with the spring 1, the fixing block, the limiting block, the pulling block 2, the clamping block and the telescopic rod, so that the device can conveniently take out and replace the filter screen, and it is very convenient to install it by just pushing it inwards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of a device housing in a combined fresh air fan filter proposed by the utility model;

[0019] Figure 2 A three-dimensional diagram of a combined fresh air fan filter proposed by the utility model;

[0020] Figure 3This is a cross-sectional view of a fixing frame in a combined fresh air fan filter screen proposed by the utility model;

[0021] Figure 4 for Figure 2 A magnified view of middle;

[0022] Figure 5 The utility model is a schematic diagram of a clamping structure in a combined fresh air fan filter.

[0023] Legend:

[0024] 1. Equipment housing; 2. Air inlet; 3. Filter; 4. Fixed frame; 5. Pressing plate 1; 6. Air outlet; 7. Pulling block 1; 8. Connecting rod; 9. Pressing plate 2; 10. Clamping box; 11. Spring 1; 12. Fixed block; 13. Limiting block; 14. Pulling block 2; 15. Card block; 16. Sleeve; 17. Telescopic rod; 18. Threaded rod; 19. Spring 2. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1-5 , the utility model provides an embodiment: a combined fresh air fan filter, including an equipment housing 1, an air inlet 2 is arranged at the left end of the equipment housing 1, an air outlet 6 is arranged at the right end of the equipment housing 1, a fixing frame 4 is slidably connected to the inner wall of the equipment housing 1, a telescopic rod 17 is slidably connected to the inner wall of the fixing frame 4, the right end of the telescopic rod 17 is fixedly connected to the inner wall of the equipment housing 1, a pull block 2 14 is fixedly connected to the front end of the fixing frame 4, a spring 11 is fixedly connected to the left end of the spring 11, a fixing block 12 is fixedly connected to the fixed block 12 at one end relative to the fixed block 12, the outer wall of the limiting block 13 is slidably connected to the inner wall of the pulling block 2 14, the outer wall of the limiting block 13 is arranged on the inner wall of the card block 15, and the card block 15 is fixedly connected to the front end of the equipment housing 1;

[0027] Specifically, the limit block 13 is pulled out from the card block 15 to release the limit on the fixing frame 4, and the fixing frame 4 can be pulled out from the equipment housing 1 with the telescopic rod 17 to replace the filter screen 3 inside the fixing frame 4. After the replacement is completed, the fixing frame 4 is pushed back to reset the telescopic rod 17. At the same time, the limit block 13 is squeezed by the card block 15 to slide toward the left end of the pulling block 2 14 and drive the spring 11 to stretch through the fixing block 12. When the fixing frame 4 completely enters the equipment housing 1, the limit block 13 will be inserted into the card block 15 under the elastic force generated by the reset of the spring 11, and the fixing frame 4 is fixed, which is convenient for replacing the filter screen 3 inside the equipment housing 1.

[0028] Two threaded rods 18 are fixedly connected to the right side of the inner wall of the pull block 2 14, and the outer walls of the threaded rods 18 are threadedly connected with sleeves 16. The left end of the sleeve 16 is rotatably connected with a pressure plate 15, and the outer wall of the pressure plate 15 is slidably connected to the inner wall of the fixing frame 4. The left end of the pressure plate 15 is provided with a filter screen 3, and the outer wall of the filter screen 3 is arranged on the inner wall of the fixing frame 4. The right side of the outer wall of the filter screen 3 is arranged on the inner wall of the clamping box 10, and the right end of the equipment housing 1 is fixedly connected to the clamping box 10, and the inner wall of the clamping box 10 is slidably connected with a connecting rod 8, and the right end of the connecting rod 8 is fixedly connected to a pull block 17, and the right side of the inner wall of the clamping box 10 is fixedly connected with two springs 2 19, and the other end of the spring 2 19 is fixedly connected with a pressure plate 2 9, and the outer wall of the pressure plate 29 is slidably connected to the inner wall of the clamping box 10;

[0029] Specifically, the filter screen 3 is inserted between the fixing frame 4 and the pressure plate 15, the sleeve 16 is rotated to move it on the threaded rod 18 and push the pressure plate 15 to slide inside the fixing frame 4, the filter screen 3 is clamped, so that the filter screen 3 is tightly fitted to the inner wall of the fixing frame 4 to reduce the gap, and then the pull block 17 is pulled to make the connecting rod 8 drive the pressure plate 29 to slide inside the clamping box 10 and compress the spring 2 19, and then the fixing frame 4 is pushed into the equipment housing 1, so that the right side of the filter screen 3 is inserted into the clamping box 10, and then the pull block 17 is released to make the pressure plate 29 push the filter screen 3 to fit with the clamping box 10 under the elastic force of the spring 2 19, which can reduce the gap between the filter screen 3 and the inner wall of the equipment housing 1 and improve the filtering effect.

[0030] Working principle: by pulling the limit block 13 out of the card block 15 to release the limit on the fixing frame 4, the fixing frame 4 can be pulled out from the equipment housing 1 with the telescopic rod 17 to replace the filter 3 inside the fixing frame 4. After the replacement is completed, the fixing frame 4 is pushed back to reset the telescopic rod 17. At the same time, the limit block 13 is squeezed by the card block 15 to slide toward the left end of the pull block 2 14 and drive the spring 11 to stretch through the fixing block 12. When the fixing frame 4 completely enters the equipment housing 1, the limit block 13 will be inserted into the card block 15 under the elastic force generated by the reset of the spring 11, and the fixing frame 4 is fixed, which is convenient for replacing the filter 3 inside the equipment housing 1. 3 is inserted between the fixing frame 4 and the pressure plate 15, the sleeve 16 is rotated to move it on the threaded rod 18 and push the pressure plate 15 to slide inside the fixing frame 4, the filter screen 3 is clamped, so that the filter screen 3 is closely attached to the inner wall of the fixing frame 4 to reduce the gap, and then the pull block 17 is pulled to make the connecting rod 8 drive the pressure plate 29 to slide inside the clamping box 10 and compress the spring 2 19, and then the fixing frame 4 is pushed into the equipment housing 1, so that the right side of the filter screen 3 is inserted into the clamping box 10, and then the pull block 17 is released to make the pressure plate 29 push the filter screen 3 to fit with the clamping box 10 under the elastic force of the spring 2 19, which can reduce the gap between the filter screen 3 and the inner wall of the equipment housing 1 and improve the filtering effect.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined fresh air fan filter, comprising a device housing (1), characterized in that: The left end of the device housing (1) is provided with an air inlet (2), and the right end of the device housing (1) is provided with an air outlet (6). The inner wall of the device housing (1) is connected to a pull block 2 (14) through a supporting assembly. The left end of the pull block 2 (14) is connected to a limit block (13) through a fixing assembly. The front end of the device housing (1) is fixedly connected to a clamping block (15). The right side of the inner wall of the pull block 2 (14) is fixedly connected to two threaded rods (18). The outer walls of the threaded rods (18) are both threadedly connected to sleeves (16). The left end of the sleeve (16) is rotatably connected to a pressure plate 1 (5). The left end of the pressure plate 1 (5) is provided with a filter screen (3). The right end of the device housing (1) is fixedly connected to a clamping box (10), and the inner wall of the clamping box (10) is connected to a pull block 1 (7) through a clamping assembly.

2. The combined fresh air fan filter according to claim 1 is characterized in that: The support assembly comprises a fixed frame (4) slidably connected to the inner wall of the equipment housing (1), a telescopic rod (17) is slidably connected to the inner wall of the fixed frame (4), and the rear end of the second pull block (14) is fixedly connected to the front end of the fixed frame (4).

3. The combined fresh air fan filter according to claim 1 is characterized in that: The fixing assembly comprises a spring one (11) fixedly connected to the left end of the pull block two (14), the left end of the spring one (11) is fixedly connected to a fixing block (12), and the opposite end of the fixing block (12) is fixedly connected to the upper and lower ends of the limit block (13).

4. The combined fresh air fan filter according to claim 1 is characterized in that: The clamping assembly comprises a connecting rod (8) slidably connected to the inner wall of the clamping box (10), the left end of the pull block (7) is fixedly connected to the right end of the connecting rod (8), and two springs (19) are fixedly connected to the right side of the inner wall of the clamping box (10), and the other end of the spring (19) is fixedly connected to a pressure plate (9).

5. The combined fresh air fan filter according to claim 1 is characterized in that: The outer wall of the pressure plate (5) is slidably connected to the inner wall of the fixing frame (4), the outer wall of the filter screen (3) is arranged on the inner wall of the fixing frame (4), and the right side of the outer wall of the filter screen (3) is arranged on the inner wall of the clamping box (10).

6. The combined fresh air fan filter according to claim 2 is characterized in that: The right end of the telescopic rod (17) is fixedly connected to the inner wall of the device housing (1).

7. The combined fresh air fan filter according to claim 3 is characterized in that: The outer wall of the limit block (13) is slidably connected to the inner wall of the second pull block (14), and the outer wall of the limit block (13) is arranged on the inner wall of the clamping block (15).

8. The combined fresh air fan filter according to claim 4 is characterized in that: The outer wall of the second pressing plate (9) is slidably connected to the inner wall of the clamping box (10).

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