Air filtering structure of centrifugal fan

Abstract

The utility model relates to the technical field of centrifugal fans, in particular to an air filtering structure of a centrifugal fan, which comprises a pipeline and a partition plate, and the pipeline is provided with a groove, an insertion opening, a positioning hole, a cavity and an insertion groove; the groove body is matched with a groove formed in the pipeline, a clamping mechanism is mounted on the groove body, and a filter plate is clamped on the clamping mechanism; the handle is fixedly installed on the upper side of the groove body, an inserting rod is fixedly arranged on the lower side of the groove body, and the inserting rod is matched with the inserting opening and provided with a clamping opening; the clamping mechanism is mounted in the cavity and the slot formed in the pipeline; the positioning mechanism is inserted into the lower end of the filter plate, is matched with the positioning hole and is used for positioning the lower end of the filter plate. According to the air filtering structure of the centrifugal fan, air entering the centrifugal fan can be filtered, the filtering plate can be conveniently replaced, meanwhile, the filtering plate can be positioned when the filtering plate is replaced, stable installation of the filtering plate is guaranteed, operation is easy, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and in particular to an air filtration structure for a centrifugal fan. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas; they are a type of driven fluid machinery. Centrifugal fans are widely used in ventilation, dust removal, and cooling in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings; for ventilation and induced draft in boilers and industrial furnaces; for cooling and ventilation in air conditioning equipment and household appliances; for grain drying and conveying; as a wind source in wind tunnels; and for inflation and propulsion of hovercraft, etc.

[0003] While existing filtration structures can filter the air entering the centrifugal fan, they still have some problems. First, it is inconvenient to replace the filter plates in the current filtration structure. Second, the current filtration structure cannot position the filter plates when replacing them, and the filter plates are prone to displacement during installation. Therefore, an air filtration structure for centrifugal fans is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide an air filtration structure for a centrifugal fan, aiming to solve the following problems: the existing filtration structure is inconvenient to replace the filter plate and cannot position the filter plate when replacing it.

[0005] This utility model embodiment is implemented as follows: an air filtration structure for a centrifugal fan includes: a pipe and a partition plate. The pipe has a groove, an insertion port, a positioning hole, a cavity, and a slot. The insertion port is located on the lower side of the groove, the positioning hole is located on the side of the pipe away from the insertion port, and the cavity is located on the side of the slot. The partition plate is fixed inside the pipe and has a vent hole. The positioning hole is located between two partition plates. A groove body is configured to cooperate with the groove in the pipe. A clamping mechanism is installed on the groove body, and a replaceable filter plate is clamped on the clamping mechanism. The filter plate is used to filter the air flowing through it. A handle is fixedly installed on the upper side of the groove body for inserting or removing the filter plate through the insertion port into the pipe. A rod is fixedly installed on the lower side of the groove body, and the rod is configured to cooperate with the insertion port and has a locking slot. A clamping mechanism is installed in the cavity and slot in the pipe for clamping or pushing the rod out of the slot. A positioning mechanism is inserted into the lower end of the filter plate and cooperates with the positioning hole for positioning the lower end of the filter plate.

[0006] Preferably, the clamping mechanism includes: a rotatable handle, which is rotatably mounted on the tank body, and a first bevel gear is fixedly mounted on the rotatable handle; a lead screw, which has two ends that are far apart from each other and are rotatably connected to the inner wall of the tank body, and the two lead screws have opposite threads and are fixedly connected to a connecting rod at their near ends, and a second bevel gear that meshes with the first bevel gear is fixedly mounted on the connecting rod; a guide rod, which has both ends fixedly connected to the inner wall of the tank body, and a movable block that is threadedly connected to the lead screw is sleeved on the guide rod, and the movable blocks are distributed on both sides of the connecting rod; a clamping plate for clamping the upper part of the filter plate is fixedly mounted on the movable block.

[0007] Preferably, the clamping mechanism includes: a control handle, which is rotatably mounted at the cavity in the pipe, and a cam rotatably mounted inside the pipe is fixedly mounted on the control handle; a slide rod, both ends of which are fixedly connected to the inner wall of the cavity, and a slide plate that slides in contact with the cam is sleeved on the slide rod, and a push spring is fixedly connected between the slide plate and the inner wall of the cavity; an extension rod, one end of which is fixedly connected to the slide plate, and the other end of which is fixedly mounted with a locking block, the locking block extending through the cavity into the slot, and the locking block can be engaged into the slot to fix the insertion rod in the slot; and an ejection assembly, which is fixedly mounted in the slot for ejecting the insertion rod from the slot.

[0008] Preferably, the ejection assembly includes: a top spring, which is fixedly disposed in a slot opened in the pipe and there are multiple top springs, and a top plate is fixedly disposed on the top spring for moving the push rod upward.

[0009] Preferably, the positioning mechanism includes: an elastic plug that can be inserted into the lower end of the filter plate, a fixing plate fixedly disposed on the elastic plug, a positioning rod fixedly disposed on the fixing plate, the positioning rod and the positioning hole being configured to cooperate, and the positioning rod being inserted into the positioning hole to position the lower end of the filter plate.

[0010] The air filtration structure of the centrifugal fan provided by this utility model can not only filter the air entering the centrifugal fan, but also facilitate the replacement of the filter plates. At the same time, the filter plates can be positioned during replacement to ensure stable installation. It is simple to operate and highly practical. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the air filtration structure of a centrifugal fan.

[0012] Figure 2 This is a schematic diagram of the clamping mechanism of the air filter structure of a centrifugal fan.

[0013] Figure 3 This is a schematic diagram of the clamping mechanism of the air filter structure of a centrifugal fan.

[0014] Figure 4 This is a schematic diagram of the positioning mechanism of the air filter structure of a centrifugal fan.

[0015] In the attached diagram: 1-pipe, 2-partition, 3-trough, 4-clamping mechanism, 5-filter plate, 6-handle, 7-insertion rod, 8-clamping mechanism, 9-positioning mechanism, 41-rotor, 42-first bevel gear, 43-lead screw, 44-connecting rod, 45-second bevel gear, 46-guide rod, 47-moving block, 48-clamping plate, 81-control handle, 82-cam, 83-slide rod, 84-slide plate, 85-push spring, 86-extension rod, 87-clamping block, 88-ejection assembly, 881-top spring, 882-top plate, 91-elastic plug, 92-fixed plate, 93-positioning rod. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not limit the present utility model.

[0017] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0018] Please see Figure 1 This utility model provides an air filtration structure for a centrifugal fan, the air filtration structure of which includes:

[0019] The system comprises a pipe 1 and a partition 2. The pipe 1 has a groove, an insertion port, a positioning hole, a cavity, and a slot. The insertion port is located on the lower side of the groove, the positioning hole is located on the side of the pipe 1 away from the insertion port, and the cavity is located on the side of the slot. The partition 2 is fixed inside the pipe 1 and has a vent hole. The positioning hole is located between two partitions 2. A trough 3 is configured to cooperate with the groove in the pipe 1. A clamping mechanism 4 is installed on the trough 3, which clamps a removable and replaceable filter plate 5. The filter plate 5 is used to filter the air flowing through it. A handle 6 is fixedly installed on the upper side of the trough 3 and is used to insert or remove the filter plate 5 from the pipe 1 through the insertion port. An insertion rod 7 is fixedly installed on the lower side of the trough 3. The insertion rod 7 is configured to cooperate with the insertion port and has a locking slot. A clamping mechanism 8 is installed in the cavity and slot in the pipe 1 and is used to clamp or push the insertion rod 7 out of the slot. A positioning mechanism 9 is inserted into the lower end of the filter plate 5 and is configured to cooperate with the positioning hole for positioning the lower end of the filter plate 5.

[0020] When using the air filtration structure of this centrifugal fan, first place the upper end of the filter plate 5 onto the clamping mechanism 4, rotate the control end of the clamping mechanism 4, and the clamping mechanism 4 can press and fix the filter plate 5. Then, insert the positioning mechanism 9 into the pre-drilled hole at the lower end of the filter plate 5, hold the handle 6, align the insertion rod 7 with the slot and insert it. At the same time, the filter plate 5 is also inserted into the pipe 1 from the insertion port. Until the positioning mechanism 9 is inserted into the positioning hole, the clamping mechanism 8 will also clamp the insertion rod 7 into the slot, thus completing the installation of the filter plate 5. When the air flows through the filter plate 5, the filter plate 5 can filter the air.

[0021] like Figure 2 As shown in the preferred embodiment of this utility model, the clamping mechanism 4 includes: a rotatable handle 41, which is rotatably mounted on the groove 3, and a first bevel gear 42 is fixedly mounted on the rotatable handle 41; a lead screw 43, which has two ends that are far apart from each other and is rotatably connected to the inner wall of the groove 3, and the two lead screws 43 have opposite threads and are fixedly connected to a connecting rod 44 at their near ends, and a second bevel gear 45 that meshes with the first bevel gear 42 is fixedly mounted on the connecting rod 44; a guide rod 46, which has both ends fixedly connected to the inner wall of the groove 3, and a moving block 47 that is threadedly connected to the lead screw 43 is sleeved on the guide rod 46, and the moving block 47 is distributed on both sides of the connecting rod 44; a clamping plate 48 for clamping the upper side of the filter plate 5 is fixedly mounted on the moving block 47.

[0022] When clamping the upper end of the filter plate 5, place the upper end of the filter plate 5 between the two clamping plates 48, and then rotate the handle 41. The handle 41 drives the first bevel gear 42 to rotate, and the first bevel gear 42 drives the second bevel gear 45, the connecting rod 44 and the lead screw 43 to rotate. The rotation of the lead screw 43 can make the moving blocks 47 on both sides and the clamping plates 48 move closer to each other along the guide rod 46, so as to press and fix the upper end of the filter plate 5.

[0023] like Figure 3 As shown, in a preferred embodiment of this utility model, the clamping mechanism 8 includes: a control handle 81, which is rotatably installed at the cavity opened in the pipe 1, and a cam 82 is fixedly installed on the control handle 81 and rotatably installed inside the pipe 1; a slide rod 83, whose two ends are fixedly connected to the inner wall of the cavity, and a slide plate 84 that slides in contact with the cam 82 is sleeved on the slide rod 83, and a push spring 85 is fixedly connected between the slide plate 84 and the inner wall of the cavity; an extension rod 86, one end of which is fixedly connected to the slide plate 84, and a locking block 87 is fixedly installed at the other end, the locking block 87 extends through the cavity into the slot, and the locking block 87 can be locked into the slot to fix the insertion rod 7 in the slot; and an ejection assembly 88, which is fixedly installed in the slot and is used to push the insertion rod 7 out of the slot.

[0024] like Figure 3As shown, in a preferred embodiment of the present invention, the ejection assembly 88 includes: a top spring 881, which is fixedly installed in the slot opened in the pipe 1 and there are multiple top springs; a top plate 882 for moving the push rod 7 upward is fixedly installed on the top spring 881.

[0025] When the insert rod 7 is inserted into the slot, after the insert rod 7 and the locking block 87 are aligned, the push spring 85 can push the slide plate 84, the extension rod 86 and the locking block 87 to slide along the slide rod 83, thereby driving the locking block 87 into the slot, and then locking the insert rod 7 in the slot. If the filter plate 5 needs to be removed and replaced, turn the control handle 81. The control handle 81 drives the cam 82 to rotate. The cam 82 drives the slide plate 84, the extension rod 86 and the locking block 87 to slide to the left along the slide rod 83 and compresses the push spring 85. The locking block 87 can then disengage from the slot. At this time, the top spring 881 causes the top plate 882 to push the insert rod 7 upward a certain distance. Then, pull the handle 6 to remove the filter plate 5 from the insertion port and replace the pipe 1.

[0026] like Figure 4 As shown, in a preferred embodiment of the present invention, the positioning mechanism 9 includes: an elastic plug 91, which can be inserted into the lower end of the filter plate 5; a fixing plate 92 is fixedly provided on the elastic plug 91; a positioning rod 93 is fixedly provided on the fixing plate 92; the positioning rod 93 is configured to cooperate with the positioning hole; and the positioning rod 93 can be inserted into the positioning hole to position the lower end of the filter plate 5.

[0027] When positioning the lower end of the filter plate 5, the elastic plug 91 is inserted into the pre-drilled hole of the filter plate 5. When the filter plate 5 is inserted into the pipe 1, the positioning rod 93 can be inserted into the positioning hole, thereby achieving the positioning of the lower end of the filter plate 5.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air filtering structure of a centrifugal fan comprising a duct and a baffle, characterized by, The pipeline is provided with a groove, an insertion port, a positioning hole, a cavity and a slot, the insertion port is arranged at the lower side of the groove, the positioning hole is arranged at the side of the pipeline away from the insertion port, the cavity is arranged at one side of the slot, the partition plate is fixed in the pipeline and is provided with a ventilation hole, and the positioning hole is arranged between the two partition plates; The groove body is arranged in cooperation with the groove of the pipeline, the clamping mechanism is mounted on the groove body, the filter plate which can be disassembled and replaced is clamped on the clamping mechanism, and the filter plate is used for filtering the air flowing therethrough; The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate.

2. The air filtering structure of the centrifugal fan according to claim 1, wherein The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate.

3. The air filtering structure of the centrifugal fan according to claim 2, wherein The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises:

4. The air filtering structure of the centrifugal fan according to claim 3, wherein The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; 5. The air filtering structure of the centrifugal fan according to claim 1, wherein The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion rod is arranged in cooperation with the insertion port and is provided with a bayonet; The clamping mechanism is mounted at the cavity and the slot of the pipeline, and is used for clamping or pushing out the insertion rod from the slot; The positioning mechanism is inserted into the lower end of the filter plate and is arranged in cooperation with the positioning hole, and is used for positioning the lower end of the filter plate. The clamping mechanism comprises: The handle is fixedly installed on the upper side of the groove body and is used for putting or taking out the filter plate from the insertion port of the pipeline, the insertion rod is fixedly arranged at the lower side of the groove body, the insertion

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