Filter type negative pressure centrifugal blower with external cyclone separator

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a filtering type negative pressure centrifugal blower with an external cyclone separator, which comprises a fan main body, a separator body is placed on one side of the fan main body, the fan main body is connected with the separator body through a connecting pipeline, the separator body comprises a separating tank and a box body, and the separating tank is connected with the box body through a connecting pipeline. A height adjusting part is arranged on the edge of the outer diameter of the separation tank and comprises a moving frame, extending rods extending upwards are arranged at the four corners of the box body, the four extending rods can be attached to the interior of the moving frame and can limit the moving frame, and the moving frame can move up and down along the extending rods. The separating tank can be supported by moving the moving frame up and down, meanwhile, the moving frame can adapt to separating tanks of different heights, the applicability is improved, the influence of deflection force on the bottom of the separating tank can be reduced by supporting the upper part of the separating tank, and the extension rod can play a role in positioning the moving frame.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and in particular to an external cyclone separator filter-type negative pressure centrifugal blower. Background Technology

[0002] A cyclone separator is a device used for separating gas-solid or liquid-solid systems. Its working principle relies on the rotational motion caused by the tangential introduction of airflow, which throws solid particles or liquid droplets with significant inertial centrifugal force towards the outer wall surface, separating them. The main characteristics of a cyclone separator are its simple structure, high operational flexibility, high efficiency, convenient management and maintenance, and low price. A negative pressure fan works by discharging air outwards, causing a drop in indoor air pressure and creating a thinner indoor air zone. Air then flows into the room due to the pressure difference.

[0003] Negative pressure fans often carry very fine impurities such as paper scraps and fibers, or large amounts of dust in their intake air. Traditional air filters are prone to clogging, affecting the fan's performance. The current solution is to install a traditional air filter at the inlet, but the filter element is too fine and is prone to clogging, affecting the fan's performance and often not lasting more than a day. The filter element is too coarse and cannot guarantee the filtration effect. When using a separator to remove impurities, the installed separator tank is too high and has poor stability, and the separator body is prone to tipping over and causing damage. Utility Model Content

[0004] To overcome the problems of existing negative pressure fans having impurities in the intake air, which affect the fan performance and prevent it from working for a long time after installing an air filter, and the easy tilting and damage caused by using traditional separators.

[0005] The technical solution of this utility model is as follows: an external cyclone separator filter-type negative pressure centrifugal blower, including a blower body, a separator body placed on one side of the blower body, the blower body and the separator body connected by a connecting pipe, the separator body including a separation tank and a box located at the bottom of the separation tank, a height adjustment part provided on the edge of the outer diameter of the separation tank, the height adjustment part including a movable frame, the movable frame having a frame-shaped structure, and extension rods extending upward at the four corners of the box, the four extension rods being able to fit into the interior of the movable frame, the four extension rods being able to limit the movable frame, and the movable frame being able to move up and down along the height direction of the extension rods.

[0006] Preferably, the top of the separator is provided with an air outlet channel, which can be connected to a connecting pipe. The connecting pipe is fitted around the outer diameter of the air outlet channel, and a clamp can be fitted around the outer diameter of the air outlet channel. The inner diameter surface of the separator is provided with an air inlet channel, through which air can enter the interior of the separator. The bottom of the separator is provided with a connecting flange, on which several bolts are arranged in a circular array, and the bolts are connected to the housing.

[0007] Preferably, a nut is welded to the upper side of the inner wall of the movable frame, which can engage with a stud. A rubber sheet is attached to the side of the stud facing the center of the movable frame, and the rubber sheet can fit against the outer wall of the separation tank. The side of the stud corresponding to the outer wall of the movable frame can be screwed into a nut.

[0008] Preferably, a fixing block is welded to the lower side of the inner wall of the movable frame. The top of the fixing block is provided with a through screw hole. A stud is connected to the screw hole by a threaded connection. An adjusting post is provided at the bottom of the stud. An optical axis is provided at the bottom of the adjusting post. An insertion hole is provided at the top of the housing. A thrust ball bearing is placed in the insertion hole. The optical axis can be inserted into the insertion hole and contact the thrust ball bearing.

[0009] Preferably, the side wall of the box has a slot 1, into which a pull-out box can be inserted. The top center of the pull-out box has a receiving cavity, and the top of the pull-out box has a positioning hole. A positioning post can be inserted from the top of the box into the positioning hole, and the top of the positioning post has an anti-fall post.

[0010] Preferably, a nut is fitted at the bottom of the fixing block at the outer diameter of the stud, and the nut can fit tightly against the bottom of the fixing block.

[0011] Preferably, a second slot is provided on the side wall of the box below the first slot, and a counterweight can be inserted into the second slot.

[0012] The beneficial effects of this utility model are as follows: Compared with traditional separators that lack a stable structure and are prone to tipping over and damage, the moving frame can support the separation tank by moving up and down. At the same time, the moving frame can adapt to separation tanks of different heights, increasing its applicability. Supporting the upper part of the separation tank can reduce the impact of the deflection force on the bottom of the separation tank, ensuring its structural stability. The extension rod can play a positioning role for the moving frame, making the moving frame stable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the connecting flange structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the rubber sheet structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the fixing block structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the pull-out box structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Slot 2; 12. Slot 1; 13. Insertion hole; 14. Extension rod; 2. Separator tank; 21. Air outlet duct; 22. Connecting flange; 221. Bolt; 23. Air inlet duct; 3. Fan body; 31. Connecting pipe; 4. Counterweight; 5. Pull-out box; 51. Receiving cavity; 52. Positioning hole; 54. Anti-fall column; 55. Positioning column; 6. Moving frame; 61. Stud 1; 62. Nut 1; 63. Nut 2; 64. Rubber sheet; 65. Fixing block; 651. Screw hole; 661. Optical axis; 662. Adjusting column; 663. Stud 2; 664. Nut 3. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5 This utility model provides an embodiment of an external cyclone separator filter-type negative pressure centrifugal blower, including a blower body 3, a separator body placed on one side of the blower body 3, and the blower body 3 and the separator body connected by a connecting pipe 31. The separator body includes a separation tank 2 and a box 1 located at the bottom of the separation tank 2. The outer edge of the separation tank 2 is provided with a height adjustment part, which includes a movable frame 6. The movable frame 6 is a frame structure. The four corners of the box 1 are provided with upwardly extending extension rods 14. The four extension rods 14 can fit into the interior of the movable frame 6 and limit the movable frame 6. The movable frame 6 can move up and down along the height direction of the extension rods 14. The up and down movement of the movable frame 6 can support the separation tank 2. At the same time, the movable frame 6 can adapt to separation tanks 2 of different heights, increasing applicability. Supporting the upper part of the separation tank 2 can reduce the influence of the deflection force on the bottom of the separation tank 2 and ensure its structural stability. The extension rods 14 can play a positioning role for the movable frame 6, making the movable frame 6 stable.

[0021] Please see Figure 1 - Figure 4In this embodiment, the top of the separator 2 is provided with an air outlet channel 21, which can be connected to a connecting pipe 31. The connecting pipe 31 is fitted around the outer diameter of the air outlet channel 21, and a clamp can be fitted around the outer diameter of the air outlet channel 21. The inner diameter surface of the separator 2 is provided with an air inlet channel 23, through which air can enter the interior of the separator 2. The bottom of the separator 2 is provided with a connecting flange 22, on which several bolts 221 are arranged in a circular array. The bolts 221 are connected to the housing 1. The air outlet channel 21 facilitates the fan body 3 to draw air from the air inlet channel 23. The connecting pipe 31, fitted around the outer diameter of the air outlet channel 21, can form a cyclone inside the separator 2. A nut 62 is welded to the upper side of the inner wall of the moving frame 6. The nut 62 can engage with a connecting stud 61. A rubber sheet 64 is attached to the side of the stud 61 facing the center of the moving frame 6. The sheet 64 can fit against the outer wall of the separator 2. The stud 61 on one side of the outer wall of the moving frame 6 can be screwed into the nut 63. The separator 2 is pressed by the stud 61 on the moving frame 6, and the four rubber sheets 64 achieve a clamping effect to ensure the stability of the separator 2. A fixing block 65 is welded to the lower side of the inner wall of the moving frame 6. The top of the fixing block 65 is provided with a threaded hole 651 that runs vertically through it. The threaded hole 651 is connected to the stud 663. The bottom of the stud 663 is provided with an adjusting column 662. The bottom of the adjusting column 662 is provided with a light shaft 661. The top of the housing 1 is provided with an insertion hole 13. A thrust ball bearing is placed in the insertion hole 13. The light shaft 661 can be inserted into the insertion hole 13 and contact the thrust ball bearing. The height of the moving frame 6 can be adjusted by rotating the stud 663 to achieve the lifting effect. The thrust ball bearing in the insertion hole 13 can reduce the rotational resistance of the stud 663.

[0022] Please see Figure 2 - Figure 5 In this embodiment, a slot 12 is provided on the side wall of the housing 1, into which a pull-out box 5 can be inserted. A receiving cavity 51 is provided at the center of the top of the pull-out box 5, and a positioning hole 52 is provided on the top of the pull-out box 5. A positioning post 55 can be inserted from the top of the housing 1 into the positioning hole 52. An anti-fall post 54 is provided on the top of the positioning post 55. The receiving cavity 51 of the pull-out box 5 collects debris carried by the airflow, facilitating cleaning. The positioning post 55 inserted into the positioning hole 52 prevents the pull-out box 5 from accidentally falling out and causing damage. A nut 664 is fitted onto the bottom of the fixing block 65 at the outer diameter of the stud 663. The nut 664 can fit tightly against the bottom of the fixing block 65. By fitting the nut 664 tightly against the fixing block 65, the stud 663 can be pulled closer and fixed, reducing the possibility of the stud 663 rotating. A slot 11 is provided on the side wall of the housing 1 below the slot 12. A counterweight 4 can be inserted into the slot 11. By inserting the counterweight 4 into the slot 11, the center of gravity of the separator body is lowered, making the separator body stable and preventing it from being knocked over.

[0023] During operation, first rotate the adjusting column 662 to lower the moving frame 6 to its lowest position. Simultaneously, install the purchased or homemade separator 2 onto the top of the housing 1, connecting it to the housing 1 using the connecting flange 22 and bolts 221. Rotate the adjusting column 662 according to the height of the separator 2 to raise the moving frame 6 to a suitable position, ideally with the rubber sheet 64 corresponding to half the axial distance of the separator 2. Then, rotate the adjusting studs 61 at different positions sequentially to ensure the rubber sheet 64 fits snugly against the separator 2, keeping the separator 2 relatively centered within the moving frame 6 to maintain its stability. Air drawn in through the air inlet channel 23 will exit through the air outlet channel 21. The impurities drawn in by the air inlet duct 23 will fall into the pull-out box 5 inside the housing 1 due to gravity. The receiving cavity 51 of the pull-out box 5 can collect and store the impurities. When the housing 1 needs to be moved, the counterweight 4 can be removed to reduce the weight. The separate structure of the separator body and the fan body 3 can make the individual components smaller, ensuring that the entire fan system can be placed in a small space. At the same time, the separator body will not have the problem of air filter clogging. The process requirements are low, the filtration effect is obvious, the pull-out box 5 is easy to remove, and the cleaning of the receiving cavity 51 is faster and more convenient. The fan body 3 and the separator tank 2 are existing technologies, and their working principle will not be described in detail here.

[0024] Through the above steps, the up-and-down movement of the movable frame 6 can support the separator 2. At the same time, the movable frame 6 can adapt to separators 2 of different heights, increasing its applicability. Supporting the upper part of the separator 2 can reduce the impact of the deflection force on the bottom of the separator 2, ensuring its structural stability. The extension rod 14 can play a positioning role for the movable frame 6, making the movable frame 6 stable. This solves the problems in the prior art where the negative pressure fan has impurities in the intake air, the installation of an air filter will affect the fan performance and prevent it from working for a long time, and the traditional separator is easy to tip over and cause damage.

Claims

1. An external cyclone separator filter-type negative pressure centrifugal blower, characterized in that: The device includes a fan body (3), a separator body is placed on one side of the fan body (3), the fan body (3) and the separator body are connected by a connecting pipe (31), the separator body includes a separation tank (2) and a box (1) located at the bottom of the separation tank (2), the outer diameter edge of the separation tank (2) is provided with a height adjustment part, the height adjustment part includes a moving frame (6), the moving frame (6) is a frame structure, the four corners of the box (1) are provided with upward extending rods (14), the four extending rods (14) can fit with the inside of the moving frame (6), the four extending rods (14) can limit the moving frame (6), and the moving frame (6) can move up and down along the height direction of the extending rods (14).

2. The external cyclone separator filter-type negative pressure centrifugal blower according to claim 1, characterized in that: The top of the separator (2) is provided with an air outlet channel (21), which can be connected to a connecting pipe (31). The connecting pipe (31) is fitted on the outer diameter of the air outlet channel (21), and a clamp can be fitted on the outer diameter of the air outlet channel (21). The inner diameter surface of the separator (2) is provided with an air inlet channel (23), which can enter the interior of the separator (2) through the air inlet channel (23). The bottom of the separator (2) is provided with a connecting flange (22), and several bolts (221) are arranged in a circular array on the connecting flange (22). The bolts (221) are connected to the housing (1).

3. The external cyclone separator filter-type negative pressure centrifugal blower according to claim 2, characterized in that: Nut 1 (62) is welded to the upper side of the inner wall of the movable frame (6). Nut 1 (62) can engage with stud 1 (61). A rubber sheet (64) is attached to the side of stud 1 (61) facing the center of the movable frame (6). The rubber sheet (64) can fit against the outer wall of the separation tank (2). The side of stud 1 (61) corresponding to the outer wall of the movable frame (6) can spirally engage nut 2 (63).

4. The external cyclone separator filter-type negative pressure centrifugal blower according to claim 3, characterized in that: A fixing block (65) is welded to the lower side of the inner wall of the movable frame (6). The top of the fixing block (65) is provided with a threaded hole (651) that runs through the top and bottom. A stud (663) is threadedly connected to the threaded hole (651). An adjusting column (662) is provided at the bottom of the stud (663). An optical axis (661) is provided at the bottom of the adjusting column (662). A socket (13) is provided at the top of the box (1). A thrust ball bearing is placed in the socket (13). The optical axis (661) can be inserted into the socket (13) and contact the thrust ball bearing.

5. The external cyclone separator filter-type negative pressure centrifugal blower according to claim 1, characterized in that: The side wall of the box (1) is provided with a slot (12), into which a pull-out box (5) can be inserted. The center of the top of the pull-out box (5) is provided with a receiving cavity (51), and the top of the pull-out box (5) is provided with a positioning hole (52). A positioning post (55) can be inserted from the top of the box (1) into the positioning hole (52). The top of the positioning post (55) is provided with an anti-fall post (54).

6. The external cyclone separator filter-type negative pressure centrifugal blower according to claim 5, characterized in that: The bottom of the fixing block (65) is fitted with a nut (664) at the outer diameter of the stud (663), and the nut (664) can fit tightly against the bottom of the fixing block (65).

7. The external cyclone separator filter-type negative pressure centrifugal blower according to claim 6, characterized in that: The side wall of the box (1) is provided with a slot two (11) below the slot one (12), and a counterweight (4) can be inserted into the slot two (11).

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