Air duct fixing device for dust removal fan
By designing a duct fixing device and using components such as clamps and screws to stabilize the duct, the problem of duct deformation due to negative pressure was solved, thus enabling the equipment to operate normally and extend its lifespan.
Patent Information
- Application Number
- CN202423204039.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The duct of existing dust collectors is prone to deformation under negative pressure, which leads to obstructed airflow, reduced dust removal efficiency, and increased energy consumption.
A duct fixing device was designed, which includes components such as a fixing ring, a connecting ring, a screw, a clamping block, and wheels. The clamping block clamps the steel ring on the duct, and the screw and spring work together to stabilize the duct. Wheels are provided at the bottom to provide cushioning and movement assistance.
It effectively prevents the ventilation duct from deforming due to negative pressure, maintains normal operation, reduces friction, extends service life, and facilitates the adjustment of the ventilation duct position.
Smart Images
Figure CN223469450U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a fixing device, especially a wind tube fixing device for dust removal fan. BACKGROUND
[0002] One of the main functions of the wind tube of the dust removal fan is to guide the dust-containing gas from the source to the dust removal equipment. It plays the role of connecting various components, enabling the gas to flow along the predetermined path.
[0003] However, in practical applications, especially in the case of using a telescopic wind tube, due to its structural characteristics, it is easy to be sucked under the action of negative pressure, especially at the initial stage of fan start-up, the strong suction force may cause the wind tube to deform. Once the wind tube deforms, not only will it cause air flow to be blocked, increase the ventilation resistance, and thus reduce the efficiency of the dust removal system, but also affect the dust removal effect. In addition, the deformation of the wind tube will also increase the energy consumption of the system, because under high resistance, the fan needs more energy to maintain the same airflow speed. SUMMARY
[0004] In order to overcome the shortcomings of the existing wind tube without fixing structure, easy to be sucked under the action of negative pressure, and affect normal use, the technical problem: to provide a wind tube fixing device for dust removal fan.
[0005] A wind tube fixing device for dust removal fan, comprising a fixing ring, a connecting ring, a first screw, a rotating block, a second screw, a sliding block, a limiting rod, a spring, a clamping block and a pushing assembly, the fixing ring and the connecting ring form an annular ring, the fixing ring and the connecting ring are threadedly connected on both sides by the first screw, the fixing ring and the connecting ring are threadedly connected on both sides by the second screw, the second screw is rotatably connected with the sliding block on the inner side, the sliding block is slidably connected with the corresponding fixing ring or connecting ring, the second screw is connected with the rotating block on the outer side, the sliding block is connected with two limiting rods on the inner side, the clamping block is symmetrically and slidably connected between the corresponding two limiting rods, the spring is connected between the clamping block and the corresponding sliding block, the spring is sleeved on the limiting rod, and the pushing assembly is arranged on the second screw.
[0006] Optionally, the clamping block is semi-annular, and each pair of symmetric clamping blocks is mirror-distributed.
[0007] Optionally, the pushing assembly comprises a movable block, a third screw, a lifting block, an inclined block and a fastening screw, the third screw is threadedly connected in the second screw, the third screw is threadedly connected with the rotating block on the same side, the movable block is connected with the third screw on the outer side, the lifting block is rotatably connected with the third screw on the inner side, the lifting block is slidably connected with the second screw, the inclined block is connected with the lifting block on one end of the clamping block, the inclined block is in contact with the lifting block on the same side, the fastening screw is threadedly connected on both sides of the sliding block, and the fastening screw is in contact with the inclined block on the same side.
[0008] Optionally, the lifting block is square.
[0009] Optionally, a rotating ring and wheels are further included, the bottom of the fixed ring is symmetrically rotatably connected to the rotating ring, and the rotating ring is rotatably connected to the wheels.
[0010] Optionally, the wheel is made of polyurethane.
[0011] The beneficial effects are: 1. By sleeve-fitting the fixing ring and the connecting ring on the outside of the air duct and clamping the steel ring on the air duct with the clamping block, the air duct can be effectively supported to avoid the phenomenon of self-absorption and flattening due to negative pressure during use, thereby ensuring the normal operation of the equipment;
[0012] 2. Wheels are set at the bottom of the fixing device to provide a buffering effect when the air duct is placed on the ground and assist in the movement of the air duct. It not only makes it convenient for the operator to adjust the position of the air duct when needed, but also effectively reduces the friction when the air duct contacts the ground, thereby extending the service life of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.
[0014] Figure 2 This is a first partial cross-sectional view of the present invention.
[0015] Figure 3 This is a second partial cross-sectional view of the present invention.
[0016] Figure 4 It is a partial three-dimensional structural diagram of the utility model.
[0017] Markings in the accompanying drawings: 1: fixed ring, 2: connecting ring, 3: first screw, 4: rotating block, 5: second screw, 6: sliding block, 7: movable block, 8: third screw, 9: lifting block, 10: limiting rod, 11: spring, 12: clamping block, 13: inclined block, 131: fastening screw, 14: rotating ring, 15: wheel. DETAILED DESCRIPTION
[0018] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0019] Embodiment: A fan tube fixing device for a dust removal fan, such as Figures 1-3As shown, it comprises a fixed ring 1, a connecting ring 2, a first screw 3, a rotating block 4, a second screw 5, a sliding block 6, a limiting rod 10, a spring 11, a clamping block 12 and a pushing assembly, the fixed ring 1 and the connecting ring 2 form an annular ring, the fixed ring 1 and the connecting ring 2 are threadedly connected through the first screw 3 on the left and right sides, the fixed ring 1 and the connecting ring 2 are both threadedly connected with the second screw 5 on the left and right sides, the second screw 5 is rotatably connected with the sliding block 6 on the inner side, the sliding block 6 is slidably connected with the corresponding fixed ring 1 or connecting ring 2, the rotating block 4 is welded on the outer side of the second screw 5, the limiting rod 10 is welded in the sliding block 6, the clamping block 12 for clamping the steel ring of the air duct is symmetrically and slidably connected between the corresponding two limiting rods 10, the clamping block 12 is semicircular, each pair of symmetric clamping blocks 12 are mirror image distributed, the spring 11 is connected between the clamping block 12 and the corresponding sliding block 6, the spring 11 is sleeved on the limiting rod 10, and the pushing assembly is arranged on the second screw 5.
[0020] As shown in Figure 3 The pushing assembly comprises a movable block 7, a third screw 8, a lifting block 9, an inclined block 13 and a fastening screw 131, the third screw 8 is threadedly connected in the second screw 5, the third screw 8 is threadedly connected with the rotating block 4 on the same side, the movable block 7 is welded on the outer side of the third screw 8, the lifting block 9 is rotatably connected on the inner side of the third screw 8, the lifting block 9 is slidably connected with the second screw 5, the lifting block 9 is square-shaped to avoid rotating due to the rotation of the third screw 8, the inclined block 13 is integrally connected on one end of the clamping block 12 close to the lifting block 9, the inclined block 13 is in contact with the lifting block 9 on the same side, the fastening screw 131 is threadedly connected on the two sides of the sliding block 6, and the fastening screw 131 can abut against the inclined block 13 on the same side to stabilize the clamping block 12.
[0021] As shown in Figure 4 It further comprises a rotating ring 14 and a wheel 15, the rotating ring 14 is rotatably connected on the bottom of the fixed ring 1 in a symmetrical manner, the wheel 15 for buffering and assisting the movement of the air duct is rotatably connected on the rotating ring 14, and the wheel 15 is made of polyurethane, which has the advantages of high wear resistance and good elasticity.
[0022] When the dust removal fan is used, the fixing device is installed at every interval position according to the length of the air duct of the dust removal fan, and in the specific operation, the fixing ring 1 is sleeved on the lower end of the air duct, and the connecting ring 2 is sleeved on the upper end of the air duct, the steel rings are arranged at intervals on the foldable air duct for supporting, when the fixing device is installed, the clamping block 12 is aligned with the steel ring on the air duct, then the fixing ring 1 and the connecting ring 2 are fixed to each other through the first screw rod 3, then the rotating block 4 is rotated to drive the second screw rod 5 to rotate, so that the second screw rod 5 moves inward, the sliding block 6 moves inward, and then the components on the sliding block 6 move, the clamping block 12 is driven to move to the position outside the steel ring, so that the diameter of the steel ring can be flexibly adjusted, then the lifting block 9 is rotated to drive the third screw rod 8 to rotate, so that the third screw rod 8 drives the lifting block 9 to move outward, the spring 11 is in a compressed state at the beginning, after the lifting block 9 no longer abuts against the inclined block 13, the spring 11 is rebounded to reset, so that the clamping block 12 and the inclined block 13 move inward along the limiting rod 10, the clamping block 12 further clamps the steel ring, and the fixing is completed, then the fastening screw rod 131 is rotated to move inward and abut against the inclined block 13, so that the clamping block 12 cannot loosen the steel ring, so that when the dust removal fan is used, the air duct is reinforced through the fixing ring 1 and the connecting ring 2, and the air duct can be prevented from being self-sucked flat due to negative pressure, when the air duct is vertically placed on the ground, the wheels 15 at the bottom play a role in buffering and assisting movement, the air duct can be conveniently pulled and moved, and excessive wear of the bottom of the air duct is also avoided, when the fixing device needs to be removed, the fastening screw rod 131 is first reversed to move outward, the inclined block 13 is loosened, then the movable block 7 is reversed to drive the third screw rod 8 to reverse, so that the lifting block 9 moves inward, and then the inclined block 13 and the clamping block 12 move outward, the spring 11 is compressed, the clamping block 12 loosens the clamping of the air duct steel ring, then the first screw rod 3 is unscrewed, the fixing ring 1 and the connecting ring 2 are loosened, and the dismounting is completed.
[0023] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A duct fixing device for a dust removal fan, characterized by: The utility model relates to a fixing ring (1), connecting ring (2), first screw rod (3), rotating block (4), second screw rod (5), sliding block (6), limiting rod (10), spring (11), clamping block (12) and push assembly are included, fixing ring (1) and connecting ring (2) form annular ferrule, and the both sides of fixing ring (1) and connecting ring (2) are connected through first screw rod (3) threadedly, and the both sides of fixing ring (1) and connecting ring (2) are connected with second screw rod (5) threadedly, and the inboard of second screw rod (5) is rotatably connected with sliding block (6), and sliding block (6) is slidably connected with corresponding fixing ring (1) or connecting ring (2), and the outboard of second screw rod (5) is connected with rotating block (4), and the inboard of sliding block (6) is connected with two limiting rods (10), and the both sides of corresponding two limiting rods (10) are slidably connected with clamping block (12), and the inside of clamping block (12) and corresponding sliding block (6) are connected with spring (11), and spring (11) is sleeved on limiting rod (10), and push assembly is arranged on second screw rod (5).
2. A duct fixing device for a dust removal fan according to claim 1, characterized in that: Clamping block (12) is half ring, and each pair of symmetrical clamping block (12) is mirror image distribution.
3. A duct fixing device for a dust extraction fan as claimed in claim 2, characterised in that: Push assembly includes movable block (7), third screw rod (8), lifting block (9), inclined block (13) and fastening screw rod (131), and the inboard of second screw rod (5) is threadedly connected with third screw rod (8), and third screw rod (8) is threadedly connected with the rotating block (4) of same side, and the outboard of third screw rod (8) is connected with movable block (7), and the inboard of third screw rod (8) is rotatably connected with lifting block (9), and lifting block (9) is slidably connected with second screw rod (5), and the one end of clamping block (12) near lifting block (9) is connected with inclined block (13), and inclined block (13) is in contact with the lifting block (9) of same side, and the both sides of sliding block (6) are threadedly connected with fastening screw rod (131), and fastening screw rod (131) is in contact with the inclined block (13) of same side.
4. A duct fixing device for a dust removal fan according to claim 3, characterized in that: Lifting block (9) is square.
5. A duct fixing device for a dust extraction fan as claimed in claim 4, characterised in that: Rotating ring (14) and wheel (15) are further included, and rotating ring (14) is rotatably connected on the bottom of fixing ring (1), and wheel (15) is rotatably connected on rotating ring (14).
6. A duct fixing device for a dust extraction fan as claimed in claim 5, characterised in that: Wheel (15) is made of polyurethane.