An adjustable cabinet centrifugal fan outer shell installation tool

Abstract

The present invention relates to the technical field of connector installation auxiliary parts, and specifically to an adjustable cabinet centrifugal fan outer shell installation tool, comprising a connecting plate, an adjustable extension frame is fixed on the surface of the connecting plate, the adjustable extension frame is inserted in a connecting square tube, the connecting square tube is fixed to the surface of the cabinet centrifugal fan body, a slide plate is fixed on the surface of the adjustable extension frame, the slide plate is slidably connected to the surface of the connecting square tube, an installation groove is opened on the surface of the slide plate, a clamping block is inserted in the interior of the installation groove, and a turntable is rotatably connected to the interior of the installation groove, the turntable squeezes the clamping block to clamp the connecting square tube; the beneficial effects are: through the design of the adjustable extension frame, the connection length can be flexibly adjusted according to the length of the external air duct, no additional connectors or adapters are required, the installation process is simplified, and the cost is reduced; through the mutual limiting mechanism of the clamping block and the turntable, the stability of the installation tool during use is ensured, and loosening or falling off is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of connector installation auxiliary parts, in particular to an adjustable cabinet-type centrifugal fan outer shell installation tool. Background Art

[0002] The cabinet centrifugal fan uses a plate-fin heat exchanger, which is a static heat exchanger for direct air-to-air exchange. It does not require an intermediate medium for heat exchange and does not have a rotating system. Therefore, a static plate-fin heat exchanger (also called a fixed heat exchanger) is an ideal energy recovery device. The static plate-fin heat exchanger recovers sensible heat or total heat when there is a temperature difference and a water vapor partial pressure difference between the two airflows on both sides of its partition.

[0003] In the prior art, when the casing of a cabinet centrifugal fan is connected to an external air duct, when the air duct and the cabinet centrifugal fan are not completely fixed, a sleeve is needed as a tool to align the end pipe body of the cabinet centrifugal fan and the external air duct as an installation tool. Traditional sleeves are directly removed after use, or directly sleeved on the connection between the end pipe body of the cabinet centrifugal fan and the external air duct as a reinforced installation tool.

[0004] However, traditional fan installation tools often cannot flexibly adjust the connection length according to the length of the external air duct, resulting in the need for additional connectors or adapters during the installation process, which increases the difficulty and cost of installation; traditional installation tools are prone to loosening or falling off during use, affecting the normal operation of the fan; dust and debris are easily accumulated at the fan inlet, affecting the ventilation efficiency of the fan. However, traditional installation tools are often not designed with structures that are easy to clean, making the cleaning work cumbersome and difficult to complete; traditional installation tools usually require the use of tools for installation and removal, which increases the complexity and time cost of the operation. Summary of the invention

[0005] The object of the present invention is to provide an adjustable cabinet-type centrifugal fan outer shell installation tool to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable cabinet centrifugal fan outer shell installation tool, comprising a connecting plate, an adjustable extension frame is fixed on the surface of the connecting plate, the adjustable extension frame is inserted in the connecting square tube, the connecting square tube is fixed to the surface of the cabinet centrifugal fan body, a slide plate is fixed on the surface of the adjustable extension frame, the slide plate is slidably connected to the surface of the connecting square tube, a mounting groove is provided on the surface of the slide plate, a clamping block is inserted inside the mounting groove, and a turntable is rotatably connected inside the mounting groove, the turntable squeezes the clamping block to clamp the connecting square tube for braking the slide plate, a limiting block is embedded on the surface of the rubber clamping block, one end of the limiting block is movably inserted on the surface of the turntable for braking the turntable, the turntable and the clamping block limit each other, an assembling frame is inserted on the top surface of the adjustable extension frame, a mesh plate is fixed on the inner ring of the assembling frame, a reserved opening is provided on the top surface of the connecting square tube, and the reserved opening is blocked by a cover plate.

[0007] Preferably, the connecting square tube is a "convex" shaped frame, a plug ring is fixed at one end of the connecting square tube, the plug ring is inserted into the air outlet of the cabinet-type centrifugal fan body, and an inner ring groove is opened at the other end of the connecting square tube. The inner ring groove is an annular groove, and a sealing ring is fixed on the surface of the inner ring groove. The sealing ring is an annular plate structure, and the sealing ring is sleeved on the outside of the adjustable extension frame. The inner ring mouth size of the sealing ring is equal to the outer ring size of the adjustable extension frame.

[0008] Preferably, the outer ring surface of the connecting square tube is provided with a side groove, and there are two side grooves, which are symmetrically distributed about the connecting square tube, the slide plate and the side grooves correspond one to one, the slide plate is slidably connected in the side groove, the top surface and the bottom surface of the side groove are provided with a limiting groove, the long side length of the limiting groove is less than the long side length of the side groove, the inside of the limiting groove is slidably connected with a slider, the slider is fixed on the surface of the slide plate, a rubber pad is fixed on the surface of the side groove, the long side length of the rubber pad is equal to the long side length of the side groove, the rubber pad is between the slide plate and the side groove, and after the turntable pushes the clamping block, the clamping block clamps the rubber pad.

[0009] Preferably, the mounting groove is a circular groove, a through-opening is provided on the surface of the mounting groove, the clamping block is movably inserted in the through-opening, a notch 1 is provided on the end of the clamping block away from the turntable, a baffle is inserted inside the notch 1, the baffle is fixed between two parallel side walls of the through-opening, a rubber block is fixed on the surface of the baffle, one end of the rubber block is fixed to the surface of the notch 1, a limiting axis is fixed on the surface of the mounting groove, the limiting axis is a "T"-shaped round rod, the rod body of the limiting axis passes through the turntable, a notch 2 is provided on the surface of the turntable, when the notch 2 and the clamping block are misaligned, the turntable squeezes the clamping block to clamp the rubber block to produce elastic deformation.

[0010] Preferably, an outer ring groove is provided on the outer ring surface of the turntable, and the outer ring groove is an arc-shaped groove. A stopper is slidably connected to the inside of the outer ring groove, and the stopper is a "concave"-shaped block. The stopper is fixed to the surface of the mounting groove, and a rubber clamp is fixed in the groove body of the stopper. One end of the rubber clamp protrudes from the groove body of the stopper. The rubber clamp is clamped between the stopper and the outer ring groove to generate elastic deformation, thereby increasing the resistance when the turntable rotates.

[0011] Preferably, the clamping block is provided with an embedding groove 1 at one end close to the turntable, and an embedding groove 2 is provided on the surface of the turntable. The limit block is inserted into the inside of the embedding groove 1. The limit block is in a "concave" shape. A rubber support block is fixed in the groove body of the limit block, and one end of the rubber support block is fixed in the embedding groove 1. When the rubber support block is in the initial state, the rubber support block supports one end of the limit block and inserts it into the embedding groove 2.

[0012] Preferably, a perforation is provided on the surface of the turntable, the perforation is a "convex" shaped circular hole, the perforation is connected to the second embedding groove, an elastic band is fixed in the groove body at one end of the perforation, a push rod is fixed on the surface of the elastic band, the push rod is inserted into the groove at the other end of the perforation, and when the elastic band is in the initial state, the push rod protrudes from the perforation.

[0013] Preferably, a pick-up groove is provided on the surface of the turntable, and two pick-up grooves are provided, and the two pick-up grooves are symmetrically distributed with respect to the inner ring opening of the turntable.

[0014] Preferably, an assembling groove is provided at one end of the adjustable extension frame away from the connecting plate, and the assembling groove is a "T"-shaped groove. The assembling frame is inserted into the assembling groove, and the assembling frame is a "T"-shaped square frame. The top plate of the assembling frame overlaps the top groove body of the assembling groove. The thickness of the top plate of the assembling frame is less than the depth of the top groove body of the assembling groove. Screws are screwed on the top plate of the assembling frame, and the screws penetrate the top plate of the assembling frame and are screwed to the bottom surface of the top groove body of the assembling groove.

[0015] Preferably, the long side length of the reserved opening is greater than the long side length of the top surface of the assembly frame, the cover plate is a "T"-shaped plate structure, the top plate of the cover plate overlaps the top surface of the connecting square tube, the top surface of the cover plate is screwed with a hand-tightened screw, the hand-tightened screw passes through the top plate of the cover plate and is screwed to the top surface of the connecting square tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The adjustable cabinet centrifugal fan outer shell installation tool proposed in the present invention can flexibly adjust the connection length according to the length of the external air duct through the design of the adjustable extension frame, without the need for additional connectors or adapters, thereby simplifying the installation process and reducing costs; the mutual limiting mechanism of the clamping block and the turntable ensures the stability of the installation tool during use, avoids loosening or falling off, and ensures the normal operation of the fan; a detachable assembly frame and mesh plate are designed at the end of the adjustable extension frame to facilitate cleaning of the mesh plate and maintain the ventilation efficiency of the fan, and the design of the reserved opening and cover plate also makes cleaning easier and more convenient; the installation and disassembly process does not require the use of tools, and can be completed through simple rotation and push-pull operations, greatly reducing the complexity and time cost of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a side view of the structure of the present invention;

[0020] Figure 3 for Figure 2 Structural cross-section at AA in the middle;

[0021] Figure 4 for Figure 3 A magnified view of the structure at center;

[0022] Figure 5 This is a schematic diagram of the connection structure of the square tube and the adjustable extension frame of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the adjustable extension frame of the present invention after extending from the connecting square tube;

[0024] Figure 7 This is a schematic diagram of the structure of connecting square tubes of the present invention;

[0025] Figure 8 It is a schematic diagram of the connection structure of the connection plate and the adjustable extension frame of the present invention;

[0026] Fig. 9 for Figure 8 A magnified schematic diagram of the structure at B in the middle;

[0027] Fig.10 This is a schematic diagram of the connection structure between the slide plate and the connecting plate of the present invention;

[0028] Fig.11 for Fig.10 A magnified schematic diagram of the structure at C in the middle;

[0029] Fig.12 It is a schematic diagram of the distribution position of the assembly slots on the adjustable extension frame of the present invention;

[0030] Fig.13 It is a schematic diagram of the structure of the turntable of the present invention;

[0031] Fig.14 This is a schematic diagram of the structure of the rubber clamp block of the present invention;

[0032] Fig.15 for Figure 5 Side view of the middle structure;

[0033] Fig.16 for Fig.15 Structural cross-section view at the middle BB;

[0034] Fig.17 for Fig.16 A magnified schematic diagram of the structure at D in the middle;

[0035] Fig.18 for Fig.17 The enlarged schematic diagram of the structure at E in the middle;

[0036] Fig.19 for Fig.15 Structural cross-section view at CC;

[0037] Fig. 20 for Fig.19 A magnified schematic diagram of the structure at F in the middle;

[0038] Fig.21 for Fig. 20 Enlarged schematic diagram of the structure at G in the middle.

[0039] In the figure: cabinet centrifugal fan body 1, connecting square tube 2, plug ring 3, side groove 4, rubber pad 5, slide plate 6, slider 7, limit groove 8, connecting plate 9, adjustable extension frame 10, installation groove 11, through-hole 12, clamping block 13, missing groove 14, baffle 15, rubber block 16, limit shaft 17, turntable 18, missing groove 2 19, outer ring groove 20, baffle 21, rubber clamping block 22, embedded groove 1 23, embedded groove 24, limit block 25, rubber support block 26, perforation 27, elastic band 28, push rod 29, inner ring groove 30, sealing ring 31, assembly groove 32, assembly frame 33, mesh plate 34, reserved opening 35, cover plate 36, and pick-up groove 37. DETAILED DESCRIPTION

[0040] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1

[0042] See also Figures 1 to 4 The present invention provides a technical solution: an adjustable cabinet centrifugal fan outer shell installation tool, including a connecting plate 9, an adjustable extension frame 10 is fixed on the surface of the connecting plate 9, the adjustable extension frame 10 is plugged into the connecting square tube 2, the connecting square tube 2 is fixed on the surface of the cabinet centrifugal fan body 1, a slide plate 6 is fixed on the surface of the adjustable extension frame 10, the slide plate 6 is slidably connected to the surface of the connecting square tube 2, a mounting groove 11 is opened on the surface of the slide plate 6, a clamping block 13 is plugged into the inside of the mounting groove 11, and the mounting groove 11 The inside of the adjustable extension frame 10 is rotatably connected with a turntable 18, which squeezes the clamping block 13 to clamp the connecting square tube 2 for braking the slide plate 6. A limit block 25 is embedded on the surface of the rubber clamping block 22, and one end of the limit block 25 is movably inserted on the surface of the turntable 18 for braking the turntable 18. The turntable 18 and the clamping block 13 limit each other. An assembling frame 33 is inserted on the top surface of the adjustable extension frame 10, and a mesh plate 34 is fixed to the inner ring mouth of the assembling frame 33. A reserved opening 35 is opened on the top surface of the connecting square tube 2, and the reserved opening 35 is blocked by a cover plate 36.

[0043] Embodiment 2

[0044] Refer to the attached Figure 5 As shown, on the basis of the first embodiment, in order to realize the connection tool for connecting the connecting square tube 2 and the external air duct, it is integrated and installed on one end of the connecting square tube 2. The connecting square tube 2 is a "convex"-shaped frame. A plug ring 3 is fixed to one end of the connecting square tube 2. The plug ring 3 is inserted into the air outlet of the cabinet centrifugal fan body 1. An inner ring groove 30 is opened at the other end of the connecting square tube 2. The inner ring groove 30 is an annular groove. A sealing ring 31 is fixed on the surface of the inner ring groove 30. The sealing ring 31 is an annular plate structure. The sealing ring 31 is sleeved on the outer side of the adjustable extension frame 10. The inner ring size of the sealing ring 31 is equal to the outer ring size of the adjustable extension frame 10. The outer ring of the connecting square tube 2 A side groove 4 is provided on the surface, and there are two side grooves 4. The two side grooves 4 are symmetrically distributed about the connecting square tube 2. The slide plate 6 and the side groove 4 correspond one to one. The slide plate 6 is slidably connected in the side groove 4. The top surface of the side groove 4 and the bottom surface of the side groove 4 are provided with a limiting groove 8. The long side length of the limiting groove 8 is less than the long side length of the side groove 4. A slider 7 is slidably connected inside the limiting groove 8. The slider 7 is fixed on the surface of the slide plate 6. A rubber pad 5 is fixed on the surface of the side groove 4. The long side length of the rubber pad 5 is equal to the long side length of the side groove 4. The rubber pad 5 is between the slide plate 6 and the side groove 4. After the turntable 18 pushes the clamping block 13, the clamping block 13 clamps the rubber pad 5.

[0045] After the connecting plate 9 and the adjustable extension frame 10 are connected, they serve as a length compensation tool between the end of the connecting square tube 2 and the external air duct. The workpiece formed by the connecting plate 9 and the adjustable extension frame 10 is installed on the end of the connecting square tube 2 through the slide plate 6, so as to facilitate tool-free installation when connecting the connecting square tube 2 and the external air duct, and the connecting plate 9 and the adjustable extension frame 10 at this time are used as an extension tube body of the connecting square tube 2; when the connecting plate 9 and the adjustable extension frame 10 are not integrated in the end of the connecting square tube 2, they are used as detachable positioning sleeves when assembling the connecting square tube 2 and the external tube body; the rubber pad 5 is clamped by pushing the clamping block 13 by rotating the turntable 18 to prevent the slide plate 6 from falling off from one side of the connecting square tube 2, thereby preventing the connecting plate 9 and the adjustable extension frame 10 from falling off from the end of the connecting square tube 2.

[0046] Refer to the attached Figures 7 to 9 , Figures 13 to 21 As shown, in order to facilitate the adjustment of the brake length of the adjustable extension frame 10 after it extends out of the connected square tube 2, the installation groove 11 is a circular groove, and a through-hole 12 is provided on the surface of the installation groove 11. The clamping block 13 is movably inserted in the through-hole 12. A notch 14 is provided at the end of the clamping block 13 away from the turntable 18. A retaining bar 15 is inserted inside the notch 14. The retaining bar 15 is fixed between two parallel side walls of the through-hole 12. A rubber block 16 is fixed on the surface of the retaining bar 15. One end of the rubber block 16 is fixed to the surface of the notch 14. A limiting shaft 17 is fixed on the surface of the installation groove 11. The limiting shaft 17 is a "T"-shaped round rod. The rod body of the limiting shaft 17 passes through the turntable. The disk 18 has a second notch 19 on its surface. When the second notch 19 and the clamping block 13 are misaligned, the disk 18 squeezes the clamping block 13 and clamps the rubber block 16 to produce elastic deformation. The outer ring surface of the disk 18 has an outer ring groove 20. The outer ring groove 20 is an arc-shaped groove. A stopper 21 is slidably connected to the inside of the outer ring groove 20. The stopper 21 is a "concave"-shaped block. The stopper 21 is fixed to the surface of the mounting groove 11. A rubber clamping block 22 is fixed in the groove body of the stopper 21. One end of the rubber clamping block 22 extends out of the groove body of the stopper 21. The rubber clamping block 22 is clamped between the stopper 21 and the outer ring groove 20 to produce elastic deformation, thereby increasing the resistance of the disk 18 when it rotates.

[0047] When there is a large gap between the end of the connecting square tube 2 and the external air duct, it is necessary to adjust the length of the adjustable extension frame 10 extending out of the connecting square tube 2, and then the adjustable extension frame 10 can be extended to push the connecting plate 9 against the connecting plate of the external air duct, and then the connecting plate 9 and the connecting plate of the external air duct can be fixed together with the help of bolts; the turntable 18 is turned to rotate with the limit shaft 17 as the center axis, and when the turntable 18 is rotated until the second notch 19 and the through hole 12 correspond, the clamping block 13 originally squeezed by the turntable 18 no longer squeezes the rubber The block 16, that is, the rubber block 16 that was originally squeezed and deformed by the clamping block 13, is set to rebound and reset. During this process, the rubber block 16 pushes the clamping block 13 to move inside the installation groove 11, that is, the clamping block 13 no longer clamps the rubber pad 5. At this time, there is no limit between the slide plate 6 and the side groove 4. The connecting plate 9 is pulled out to pull the adjustable extension frame 10 to extend the connecting square tube 2. During this process, the connecting plate 9 drives the slide plate 6 to slide in the side groove 4, and the slide plate 6 drives the slider 7 to slide in the limit groove 8. The limit groove 8 is for the slider 7 is blocked to prevent the slide plate 6 from being pulled out from the end of the connecting square tube 2. When the connecting plate 9 and the adjustable extension frame 10 are only used as the alignment sleeve when connecting the square tube 2 and the external air duct, it is necessary to set the long side length of the limiting groove 8 to be equal to the long side length of the side groove 4, so that the slide block 7 can be pulled out from the limiting groove 8. After the position of the adjustable extension frame 10 is determined, the clamping block 13 is pushed by fingers to retract into the through opening 12. While pressing the clamping block 13, the turntable 18 is turned around the limiting axis 17 and rotated until The second notch 19 and the through-opening 12 are misaligned. At this time, the turntable 18 squeezes and limits the clamping block 13, so that the clamping block 13 tightly clamps the rubber pad 5. The reason for installing the stopper 21 is that the stopper 21 not only cooperates with the outer ring groove 20 to limit the rotation angle of the turntable 18, but also after the rubber clamping block 22 is installed on the surface of the stopper 21, the rubber clamping block 22 is clamped between the stopper 21 and the second notch 19 to increase the friction between the turntable 18 and the installation groove 11, thereby preventing the turntable 18 from rotating when no external force is applied.

[0048] In order to realize the mutual limitation between the clamping block 13 and the turntable 18, an embedding groove 23 is provided at one end of the clamping block 13 close to the turntable 18, and an embedding groove 24 is provided on the surface of the turntable 18. The limiting block 25 is inserted into the inside of the embedding groove 23. The limiting block 25 is a "concave" shaped block. A rubber support block 26 is fixed in the groove body of the limiting block 25. One end of the rubber support block 26 is fixed in the embedding groove 23. When the rubber support block 26 is in the initial state, the rubber support block 26 supports one end of the limiting block 25 and inserts into the embedding groove 24. 4; a through hole 27 is provided on the surface of the turntable 18, and the through hole 27 is a "convex" shaped circular hole, the through hole 27 is connected to the embedded groove 24, an elastic band 28 is fixed in the groove body at one end of the through hole 27, and a push rod 29 is fixed on the surface of the elastic band 28, and the push rod 29 is inserted into the notch at the other end of the through hole 27. When the elastic band 28 is in the initial state, the push rod 29 protrudes from the through hole 27, and a pick-up groove 37 is provided on the surface of the turntable 18, and two pick-up grooves 37 are provided, and the two pick-up grooves 37 are symmetrically distributed about the inner ring of the turntable 18.

[0049] The reason why the limit block 25 is embedded at the end of the clamping block 13 is to achieve that when the turntable 18 squeezes and limits the clamping block 13, the limit block 25 pops out and is inserted into the second embedding groove 24. At this time, the turntable 18 is braked and cannot rotate, that is, while the turntable 18 limits the clamping block 13, the limit block 25 popped out from the end of the clamping block 13 also limits the turntable 18; when the limit of the limit block 25 needs to be cancelled, it is only necessary to squeeze and push the push rod 29. While the push rod 29 stretches the elastic band 28 and deforms it, the push rod 29 pushes the limit block 25 out of the second embedding groove 24, and the limit block 25 retracts into the first embedding groove 23 to squeeze the rubber support block 26 to produce deformation. At this time, the turntable 18 is no longer limited, and the finger is inserted into the pick-up groove 37 to turn the turntable 18 around the limit axis 17 as the center axis.

[0050] Embodiment 3

[0051] Refer to the attached Figures 10 to 12 As shown, on the basis of the second embodiment, in order to realize the cleaning after the mesh plate 34 is removed; the end of the adjustable extension frame 10 away from the connecting plate 9 is provided with an assembling groove 32, the assembling groove 32 is a "T"-shaped groove, the assembling frame 33 is inserted into the assembling groove 32, the assembling frame 33 is a "T"-shaped square frame, the top plate of the assembling frame 33 is overlapped in the top groove body of the assembling groove 32, the top plate thickness of the assembling frame 33 is less than the depth of the top groove body of the assembling groove 32, The top plate of the assembling frame 33 is screwed with screws, which penetrate the top plate of the assembling frame 33 and are screwed to the bottom surface of the top groove body of the assembling groove 32; the long side length of the reserved opening 35 is greater than the long side length of the top surface of the assembling frame 33, and the cover plate 36 is a "T"-shaped plate structure. The top plate of the cover plate 36 overlaps the top surface of the connecting square tube 2, and the top surface of the cover plate 36 is screwed with a hand-tightened screw, which penetrates the top plate of the cover plate 36 and is screwed to the top surface of the connecting square tube 2.

[0052] An assembling frame 33 can be optionally installed at the end of the adjustable extension frame 10. After the assembling frame 33 is installed, the mesh plate 34 at the inner ring opening of the assembling frame 33 plays a filtering role at the end of the adjustable extension frame 10 to prevent debris from entering the cabinet centrifugal fan body 1. When the mesh plate 34 needs to be cleaned, the hand-tightened screw on the top surface of the cover plate 36 is screwed and removed, and the cover plate 36 is pulled out from the reserved opening 35, and then the screws on the top surface of the assembling frame 33 are loosened, and the assembling frame 33 is pulled out from the reserved opening 35, and the mesh plate 34 at the inner ring opening of the assembling frame 33 after being pulled out can be cleaned.

[0053] Embodiment 4

[0054] Based on the third embodiment, a method for using an adjustable cabinet centrifugal fan outer shell installation tool is proposed, comprising the following steps:

[0055] Step 1: After the connection of the connecting plate 9 and the adjustable extension frame 10, as a length compensation tool between the end of the connecting square tube 2 and the external air duct, the workpiece formed by the connecting plate 9 and the adjustable extension frame 10 is installed on the end of the connecting square tube 2 through the slide plate 6, so as to facilitate the tool-free installation when connecting the connecting square tube 2 and the external air duct, and the connecting plate 9 and the adjustable extension frame 10 at this time are used as the extension tube body of the connecting square tube 2; when the connecting plate 9 and the adjustable extension frame 10 are not integrated at the end of the connecting square tube 2, they are used as detachable positioning sleeves when assembling the connecting square tube 2 and the external tube body; the rubber pad 5 is clamped by pushing the clamping block 13 by rotating the turntable 18 to prevent the slide plate 6 from falling off from one side of the connecting square tube 2, thereby preventing the connecting plate 9 and the adjustable extension frame 10 from falling off from the end of the connecting square tube 2;

[0056] Step 2: When there is a large gap between the end of the connecting square tube 2 and the external air duct, it is necessary to adjust the length of the adjustable extension frame 10 extending out of the connecting square tube 2, and then the adjustable extension frame 10 can be extended to push the connecting plate 9 against the connecting plate of the external air duct, and then the connecting plate 9 and the connecting plate of the external air duct are fixed together with bolts; the turntable 18 is turned to rotate with the limit shaft 17 as the center axis, and when the turntable 18 is rotated until the second notch 19 and the through-hole 12 correspond, the clamping block 13 originally squeezed by the turntable 18 is no longer squeezed The rubber block 16 is pressed, that is, the rubber block 16 that was originally squeezed and deformed by the clamping block 13 is set to rebound and reset. In this process, the rubber block 16 pushes the clamping block 13 to move inside the installation groove 11, that is, the clamping block 13 no longer clamps the rubber pad 5. At this time, there is no limit between the slide plate 6 and the side groove 4. The connecting plate 9 is pulled out to pull the adjustable extension frame 10 to extend the connecting square tube 2. In this process, the connecting plate 9 drives the slide plate 6 to slide in the side groove 4, and the slide plate 6 drives the slider 7 to slide in the limit groove 8. The limit groove 8 is The slider 7 blocks and prevents the slide plate 6 from being pulled out from the end of the connecting square tube 2. When the connecting plate 9 and the adjustable extension frame 10 are only used as alignment sleeves when connecting the square tube 2 and the external air duct, it is necessary to set the long side length of the limiting groove 8 to be equal to the long side length of the side groove 4, so that the slider 7 can be pulled out from the limiting groove 8. After the position of the adjustable extension frame 10 is determined, the clamping block 13 is pushed by fingers to retract into the through opening 12. While pressing the clamping block 13, the turntable 18 is turned around the limiting axis 17 and rotated until The second notch 19 and the through opening 12 are misaligned. At this time, the turntable 18 squeezes and limits the clamping block 13, so that the clamping block 13 tightly clamps the rubber pad 5. The reason why the stopper 21 is installed is that the stopper 21 not only cooperates with the outer ring groove 20 to limit the rotation angle of the turntable 18, but also after the rubber clamping block 22 is installed on the surface of the stopper 21, the rubber clamping block 22 is clamped between the stopper 21 and the second notch 19 to increase the friction between the turntable 18 and the installation groove 11, so as to prevent the turntable 18 from rotating when no external force is applied.

[0057] Step 3: The limit block 25 is embedded at the end of the clamping block 13 so that when the turntable 18 squeezes and limits the clamping block 13, the limit block 25 pops out and is inserted into the second embedding groove 24. At this time, the turntable 18 is braked and cannot rotate. That is, when the turntable 18 limits the clamping block 13, the limit block 25 popped out from the end of the clamping block 13 also limits the turntable 18; when it is necessary to cancel the limit of the limit block 25, it is only necessary to squeeze and push the push rod 29. When the push rod 29 stretches the elastic band 28 and deforms, the push rod 29 pushes the limit block 25 out of the second embedding groove 24, and the limit block 25 retracts into the first embedding groove 23 to squeeze the rubber support block 26 to produce deformation. At this time, the turntable 18 is no longer limited, and the finger is inserted into the pick-up groove 37 to turn the turntable 18 around the limit axis 17 as the center axis.

[0058] Step 4: An assembly frame 33 can be optionally installed at the end of the adjustable extension frame 10. After the assembly frame 33 is installed, the mesh plate 34 at the inner ring of the assembly frame 33 acts as a filter at the end of the adjustable extension frame 10 to prevent debris from entering the cabinet centrifugal fan body 1. When the mesh plate 34 needs to be cleaned, the hand-tightened screw on the top surface of the cover plate 36 is unscrewed and removed, and the cover plate 36 is pulled out from the reserved opening 35. Then, the screws on the top surface of the assembly frame 33 are loosened, and the assembly frame 33 is pulled out from the reserved opening 35. The mesh plate 34 at the inner ring of the assembly frame 33 after being pulled out can be cleaned.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable cabinet centrifugal fan outer shell installation tool, comprising a connecting plate (9), an adjustable extension frame (10) is fixed on the surface of the connecting plate (9), the adjustable extension frame (10) is inserted into a connecting square tube (2), and the connecting square tube (2) is fixed on the surface of the cabinet centrifugal fan body (1), characterized in that: A slide plate (6) is fixed on the surface of the adjustable extension frame (10), and the slide plate (6) is slidably connected to the surface of the connecting square tube (2). A mounting groove (11) is provided on the surface of the slide plate (6), and a clamping block (13) is inserted into the interior of the mounting groove (11), and a turntable (18) is rotatably connected to the interior of the mounting groove (11). The turntable (18) squeezes the clamping block (13) to clamp the connecting square tube (2) for braking the slide plate (6). A limit block (25) is embedded on the surface of the rubber clamping block (22), and one end of the limit block (25) is movably inserted into the surface of the turntable (18) for braking the turntable (18). The turntable (18) and the clamping block (13) are mutually limited. An assembly frame (33) is inserted into the top surface of the adjustable extension frame (10), and a mesh plate (34) is fixed to the inner ring of the assembly frame (33). A reserved opening (35) is provided on the top surface of the connecting square tube (2), and the reserved opening (35) is blocked by a cover plate (36). The outer ring surface of the turntable (18) is provided with an outer ring groove (20), which is an arc-shaped groove. A stopper (21) is slidably connected inside the outer ring groove (20), which is a "concave"-shaped block. The stopper (21) is fixed on the surface of the mounting groove (11). A rubber clamp (22) is fixed in the groove body of the stopper (21). One end of the rubber clamp (22) extends out of the groove body of the stopper (21). The rubber clamp (22) is clamped between the stopper (21) and the outer ring groove (20) to generate elastic deformation, thereby increasing the resistance of the turntable (18) when the turntable (18) rotates. An embedding groove (23) is provided at one end of the clamping block (13) close to the turntable (18). An embedding groove (24) is provided on the surface of the turntable (18). A limit block (25) is inserted into the inside of the embedding groove (23). The limit block (25) is in the shape of a "concave" character. A rubber support block (26) is fixed in the groove body of the limit block (25). One end of the rubber support block (26) is fixed in the first embedding groove (23). When the rubber support block (26) is in the initial state, the rubber support block (26) supports one end of the limit block (25) and inserts it into the second embedding groove (24). A through hole (27) is opened on the surface of the rotating disk (18). The through hole (27) is in the shape of a "convex" character. The through hole (27) is connected to the second embedding groove (24). An elastic band (28) is fixed in the groove body at one end of the through hole (27). A push rod (29) is fixed on the surface of the elastic band (28). The push rod (29) is inserted into the notch at the other end of the through hole (27). When the elastic band (28) is in the initial state, the push rod (29) protrudes from the through hole (27).

2. The adjustable cabinet centrifugal fan outer shell installation tool according to claim 1, characterized in that: The connecting square tube (2) is in the form of a "convex"-shaped frame. A plug ring (3) is fixed to one end of the connecting square tube (2). The plug ring (3) is plugged into the air outlet of the cabinet-type centrifugal fan body (1). An inner ring groove (30) is formed at the other end of the connecting square tube (2). The inner ring groove (30) is in the form of an annular groove. A sealing ring (31) is fixed to the surface of the inner ring groove (30). The sealing ring (31) is in the form of an annular plate structure. The sealing ring (31) is sleeved on the outer side of the adjustable extension frame (10). The inner ring opening size of the sealing ring (31) is equal to the outer ring size of the adjustable extension frame (10).

3. The adjustable cabinet centrifugal fan outer shell installation tool according to claim 1, characterized in that: The outer ring surface of the connecting square tube (2) is provided with a side groove (4), two side grooves (4) are provided, and the two side grooves (4) are symmetrically distributed about the connecting square tube (2). The slide plate (6) and the side groove (4) correspond to each other one by one. The slide plate (6) is slidably connected in the side groove (4). The top surface of the side groove (4) and the bottom surface of the side groove (4) are provided with a limiting groove (8). The long side length of the limiting groove (8) is less than the long side length of the side groove (4). The inside of the limiting groove (8) is slidably connected with a slider (7). The slider (7) is fixed on the surface of the slide plate (6). A rubber pad (5) is fixed on the surface of the side groove (4). The long side length of the rubber pad (5) is equal to the long side length of the side groove (4). The rubber pad (5) is located between the slide plate (6) and the side groove (4). After the rotating disk (18) pushes the clamping block (13), the clamping block (13) clamps the rubber pad (5).

4. The adjustable cabinet centrifugal fan outer shell installation tool according to claim 1, characterized in that: The mounting groove (11) is a circular groove, a through opening (12) is provided on the surface of the mounting groove (11), a clamping block (13) is movably inserted in the through opening (12), a notch (14) is provided at one end of the clamping block (13) away from the rotating disk (18), a stopper (15) is inserted inside the notch (14), the stopper (15) is fixed between two parallel side walls of the through opening (12), a rubber block (16) is fixed on the surface of the stopper (15), One end of the rubber block (16) is fixed to the surface of the first notch (14), and a limiting shaft (17) is fixed to the surface of the mounting groove (11). The limiting shaft (17) is a T-shaped round rod. The rod body of the limiting shaft (17) passes through the rotating disk (18). The surface of the rotating disk (18) is provided with a second notch (19). When the second notch (19) and the clamping block (13) are misaligned, the rotating disk (18) squeezes the clamping block (13) to clamp the rubber block (16) to generate elastic deformation.

5. The adjustable cabinet centrifugal fan outer shell installation tool according to claim 1, characterized in that: The surface of the rotating disk (18) is provided with a pick-up groove (37), two pick-up grooves (37) are provided, and the two pick-up grooves (37) are symmetrically distributed with respect to the inner ring opening of the rotating disk (18).

6. The adjustable cabinet centrifugal fan outer shell installation tool according to claim 1, characterized in that: An assembling groove (32) is formed at one end of the adjustable extension frame (10) away from the connecting plate (9). The assembling groove (32) is a "T"-shaped groove. The assembling frame (33) is inserted into the assembling groove (32). The assembling frame (33) is a "T"-shaped square frame. The top plate of the assembling frame (33) overlaps the top groove body of the assembling groove (32). The thickness of the top plate of the assembling frame (33) is less than the depth of the top groove body of the assembling groove (32). Screws are screwed on the top plate of the assembling frame (33). The screws penetrate the top plate of the assembling frame (33) and are screwed on the bottom surface of the top groove body of the assembling groove (32).

7. The adjustable cabinet centrifugal fan outer shell installation tool according to claim 1, characterized in that: The length of the long side of the reserved opening (35) is greater than the length of the long side of the top surface of the assembly frame (33); the cover plate (36) is a "T"-shaped plate structure; the top plate of the cover plate (36) is overlapped on the top surface of the connecting square tube (2); the top surface of the cover plate (36) is screwed with a hand screw, which passes through the top plate of the cover plate (36) and is screwed on the top surface of the connecting square tube (2).

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