Oblique flow fan suitable for laboratory
By setting up structures such as inner ring, annular groove, movable ring and hand-twisted screw on the docking pipe of the laboratory inclined flow fan, the fan shell is quickly fixed and disassembled, solving the problem of operation troubles in the existing technology, and improving the Cleaning and maintenance efficiency.
Patent Information
- Application Number
- CN202421113298.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
When existing laboratory inclined flow fans need to be cleaned, the operation of removing the fixtures and bolts is very troublesome, resulting in a waste of time.
An inclined flow fan including a fan shell, a fan blade body and a docking pipe is designed. By providing an inner ring, an annular groove, a movable ring, a spring, a connecting rod and a butt extrusion ring on the inner wall of the docking pipe, combined with a hand-tightening screw Structure to realize stable fixation and rapid disassembly of the fan shell.
By connecting the extrusion ring, spring and connecting rod, the fan shell can be quickly fixed and disassembled, simplifying the operation process and solving the problem of troublesome removal of the fan shell in the prior art.
Smart Images
Figure CN222277038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fan device, in particular to an oblique flow fan suitable for laboratories. Background Art
[0002] The laboratory diagonal flow fan is a type of fan used in laboratory ventilation systems. It usually adopts a diagonal flow fan design, with a higher air volume and lower noise level, suitable for ventilation and air circulation inside the laboratory. This fan can effectively exhaust air from inside the laboratory, keep the air fresh, and ensure that the temperature and humidity inside the laboratory are suitable.
[0003] The existing diagonal flow fans suitable for laboratories have two docking pipes on both sides, which are connected to external pipelines. When the diagonal flow fan body needs to be cleaned, the bolts and fixings fixing the diagonal flow fan need to be removed, which is very troublesome and causes time loss. Summary of the invention
[0004] The utility model aims to solve the problem that it is very troublesome to remove the existing oblique flow fan body.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The invention discloses an oblique flow fan suitable for a laboratory, comprising a fan casing, a fan blade body and two butt-joint tubes, wherein inner rings are fixed on the inner walls of the two butt-joint tubes, annular grooves are provided between the outer side surfaces of the inner rings and the inner walls of the butt-joint tubes, a movable ring is provided inside the annular groove, a spring is fixed on one side of the movable ring, the other end of the spring is fixed on the inner wall of the annular groove, a connecting rod is fixed on the side of the movable ring away from the spring, a butt-joint extrusion ring is fixed on the other end of the connecting rod, and the butt-joint extrusion ring is clamped on the end face of the fan casing.
[0007] Preferably, a positioning sleeve block for constraining the connecting rod is fixed between the side surface of the inner ring and the inner wall of the butt pipe.
[0008] Preferably, the number and position of the springs match the number and position of the connecting rods.
[0009] Preferably, the end of the butt extrusion ring close to the fan housing is of "conical" design.
[0010] Preferably, the top of the butt joint tube is threadedly connected with a hand screw, a positioning groove is provided on the surface of the movable ring at a position corresponding to the hand screw, and the bottom end of the hand screw passes through the butt joint tube and extends to the inside of the positioning groove.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] By setting a docking extrusion ring, a spring and a connecting rod, when the fan casing is fixed, the two ends of the fan casing will squeeze the docking extrusion ring to make it shrink. When the fan casing completely enters the docking extrusion ring position, the docking extrusion ring will be stuck on the end face of the fan casing, so that the fan casing can be stably fixed. In order to further stabilize the fan casing, the fan casing is positioned by manually tightening the screw rod. When removing it, just follow the above steps in reverse, thereby achieving the effect of quickly docking and removing the fan casing, and solving the problem that the existing oblique flow fan body is very troublesome to remove. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the front cross-sectional structure of the position of the docking extrusion ring in a diagonal flow fan suitable for laboratories.
[0014] Figure 2 It is a diagonal flow fan suitable for laboratories. Figure 1 Schematic diagram of the structure at A in the middle.
[0015] Figure 3 The present invention is a three-dimensional exploded structural diagram of the connection between the butt pipe and the fan casing in a diagonal flow fan suitable for a laboratory.
[0016] Figure 4 It is a schematic diagram of the right side cross-sectional structure of the docking extrusion ring position in a diagonal flow fan suitable for laboratories.
[0017] As shown in the figure: 1. Fan casing; 2. Fan blade body; 3. Butt tube; 4. Inner ring; 5. Annular groove; 6. Movable ring; 7. Spring; 8. Connecting rod; 9. Butt extrusion ring; 10. Positioning sleeve; 11. Hand screw; 12. Positioning groove. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0019] See also Figures 1 to 4 In an embodiment of the utility model, a diagonal flow fan suitable for a laboratory comprises a fan housing 1, a fan blade body 2 and two butt joint tubes 3, an inner ring 4 is fixed on the inner wall of the two butt joint tubes 3, an annular groove 5 is provided between the outer side surface of the inner ring 4 and the inner wall of the butt joint tube 3, a movable ring 6 is movable inside the annular groove 5, a hand screw 11 is threadedly connected to the top of the butt joint tube 3, a positioning groove 12 is provided on the surface of the movable ring 6 corresponding to the position of the hand screw 11, the bottom end of the hand screw 11 passes through the butt joint tube 3 and extends to the inside of the positioning groove 12, the purpose of the hand screw 11 is to further position the movable ring 6 to prevent the subsequent movement of the movable ring 6.
[0020] A spring 7 is fixed to one side of the movable ring 6, and the other end of the spring 7 is fixed to the inner wall of the annular groove 5. A connecting rod 8 is fixed to the side of the movable ring 6 away from the spring 7. The number and position of the springs 7 match the number and position of the connecting rods 8. In this way, the force applied by the spring 7 is directly transmitted to the connecting rod 8 through the movable ring 6. The current state is as follows: Figure 1 As shown, when the fan casing 1 needs to be removed, first rotate the hand screw 11 to move it away from the positioning groove 12, and then move the fan casing 1 upward to squeeze the docking extrusion ring 9. The squeezed docking extrusion ring 9 will squeeze the spring 7 through the connecting rod 8 and the movable ring 6 to shrink the spring 7, so that the docking extrusion ring 9 will be squeezed and shrunk into the docking tube 3, and then the fan casing 1 will be separated from the docking extrusion ring, so that the fan casing 1 can be simply and easily removed, which is convenient for cleaning and maintenance. A positioning sleeve 10 that constrains the connecting rod 8 is fixed between the side of the inner ring 4 and the inner wall of the docking tube 3, and a docking extrusion ring 9 is fixed to the other end of the connecting rod 8. The docking extrusion ring 9 is stuck on the end face of the fan casing 1, and the end of the docking extrusion ring 9 close to the fan casing 1 is a "conical" design, such as Figure 1 As shown, this is mainly to enable the fan housing 1 to squeeze the docking extrusion ring 9 to make the docking extrusion ring 9 movable.
Claims
1. A diagonal flow fan suitable for a laboratory, comprising a fan housing (1), a fan blade body (2) and two butt-joint pipes (3), characterized in that: An inner ring (4) is fixed on the inner wall of the two butt-joint pipes (3); an annular groove (5) is provided between the outer side surface of the inner ring (4) and the inner wall of the butt-joint pipe (3); a movable ring (6) is movable inside the annular groove (5); a spring (7) is fixed on one side of the movable ring (6); the other end of the spring (7) is fixed on the inner wall of the annular groove (5); a connecting rod (8) is fixed on the side of the movable ring (6) away from the spring (7); a butt-joint extrusion ring (9) is fixed on the other end of the connecting rod (8); and the butt-joint extrusion ring (9) is clamped on the end surface of the fan housing (1).
2. The oblique flow fan suitable for a laboratory according to claim 1, characterized in that: A positioning sleeve (10) for constraining the connecting rod (8) is fixed between the side surface of the inner ring (4) and the inner wall of the butt tube (3).
3. The oblique flow fan suitable for a laboratory according to claim 1, characterized in that: The number and position of the springs (7) match the number and position of the connecting rods (8).
4. The oblique flow fan suitable for a laboratory according to claim 1, characterized in that: The end of the butt extrusion ring (9) close to the fan housing (1) is of a "conical" design.
5. The oblique flow fan suitable for a laboratory according to claim 1, characterized in that: The top of the butt joint tube (3) is threadedly connected with a hand screw (11), a positioning groove (12) is provided on the surface of the movable ring (6) at a position corresponding to the hand screw (11), and the bottom end of the hand screw (11) passes through the butt joint tube (3) and extends into the interior of the positioning groove (12).