CN114718913B

CN114718913B - Circular arc forging and pressing forming FFU shell

Info

Publication number: CN114718913B
Application number: CN202210335761.7A
Authority: CN
Inventors: 李水星
Original assignee: Suzhou National Clean Technology Co ltd
Current assignee: Suzhou National Clean Technology Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2024-01-12
Anticipated expiration: 2042-03-31
Also published as: CN114718913A

Abstract

The invention relates to the technical field of FFU shells and discloses an arc forging forming FFU shell, which comprises a shell body, a circular plate, a hollow cylinder, a protection net, support rods and a fan, wherein the circular plate is fixedly arranged at the top end of the shell body, the hollow cylinder is arranged at the top end of the circular plate, the protection net is arranged at the upper side of the interior of the hollow cylinder, more than two support rods are arranged at the lower side of the interior of the hollow cylinder, the fan is arranged at the top end of each support rod, and four inclined plane round rods are uniformly and slidably arranged in the circular plate. The invention not only can conveniently clamp one end of the supporting rod inside the hollow cylinder through the design of the U-shaped block and the triangular rod, thereby facilitating the installation of the fan, but also can conveniently install the hollow cylinder on the circular plate through the design of the conical block and the first spring, and can normally operate the fan in a low-power state through the design of the dome structure of the shell body, thereby reducing energy loss, noise and improving the uniformity of wind.

Description

Circular arc forging and pressing forming FFU shell

Technical Field

The invention relates to the technical field of FFU shells, in particular to an FFU shell formed by circular arc forging.

Background

FFU, chinese is fan filter unit, but FFU fan filter unit modularization connection uses, uses FFU wide application fields such as clean room, clean workstation, clean production line, assembled clean room and local hundred grades, and the fan is inhaled air and is filtered through just, high-efficient filter from FFU top, and clean air after the filtration is at whole air-out face uniform velocity delivery, and the FFU casing of general use is square casing for the air current is detained the vortex at square casing top, produces energy loss and increase noise.

The FFU shell that uses at present has certain defect, lacks hollow section of thick bamboo and convenient dismouting function of fan, causes inconvenient maintenance to the fan for the fan is damaged easily, and then has reduced FFU shell's practicality, and consequently, it is very necessary to propose convex forging and pressing shaping FFU shell.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides the FFU shell formed by circular arc forging and pressing, which mainly solves the problems that the fan is inconvenient to maintain and the practicality of the FFU shell is reduced.

(II) technical scheme

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a convex forging and pressing shaping FFU casing, includes casing main part, plectane, hollow section of thick bamboo, protection network, bracing piece and fan, casing main part top fixed mounting has the plectane, circular through-hole has been seted up on the plectane top, and circular through-hole internally mounted has a hollow section of thick bamboo, hollow section of thick bamboo bottom and plectane bottom parallel and level, the protection network is installed to hollow section of thick bamboo inside upside, two or more bracing pieces are installed to hollow section of thick bamboo inside downside, and two or more bracing pieces constitute a support frame, the fan is installed on the support frame top, four inclined plane round bars of plectane inside even sliding mounting, and inclined plane round bar one end is close to hollow section of thick bamboo one end fixed mounting have the square, evenly set up four square holes on the hollow section of thick bamboo annular side, square one end joint is inside square hole, hollow section of thick bamboo internally even mounting more than two gag lever posts, and two adjacent gag lever posts are located square hole both sides respectively, bracing piece one end extends to two adjacent gag lever post inside, square hole inside sliding mounting has U type piece, U type piece one end is connected with the square, bracing piece one end extends to U type piece inside, two inclined plane round bar and two round bar top fixed mounting, two inclined plane round bar and two side are located the round bar, two round bar top and two equal sides of cylinder top, the round bar is located down.

Further, a first spring is installed on the annular side face of the inclined plane round rod, two ends of the first spring are respectively and fixedly installed on the square and the inner wall of the circular plate, a second spring is installed on the annular side face of the cylindrical pressing rod, two upper ends and two lower ends of the second spring are respectively and fixedly installed at the bottom end of the pressing ring and the top end of the circular plate, more than two L-shaped clamping rods are uniformly installed on the annular side face of the hollow cylinder, more than two cylindrical holes are uniformly formed in the top end of the circular plate, and the bottom end of each L-shaped clamping rod extends to the inside of each cylindrical hole.

Further, four square hole grooves are uniformly formed in one end, close to the square block, of the U-shaped block, a conical block is slidably mounted in the square hole groove, a spring III is fixedly mounted at one end of the conical block, and the other end of the spring III is fixedly mounted in the square hole groove.

On the basis of the scheme, four limit grooves are uniformly formed in one end, close to the U-shaped block, of the square block, and one end of the conical block extends to the inside of the limit groove.

Further, rectangular grooves are formed in the front ends of the U-shaped blocks and the front ends of the triangular rods, a first guide rod is fixedly installed in the rectangular grooves, a square rod is installed on one annular side face of the first guide rod, one end of the square rod is fixedly installed on one limiting rod, a fourth spring is installed on one annular side face of the first guide rod, and two ends of the fourth spring are fixedly installed on the square rod and the inner wall of the rectangular groove respectively.

Further, four supporting blocks are evenly installed on the top end of the shell body, grooves are formed in the top ends of the supporting blocks, fixing pins are fixedly installed in the grooves, rotating press blocks are installed on annular side faces of the fixing pins in a rotating mode, one ends of the rotating press blocks are attached to the top ends of the pressing rings, torsion springs are fixedly installed on the annular side faces of the fixing pins, and the outer sides of the torsion springs are fixedly installed inside the supporting blocks.

On the basis of the scheme, the push plate is slidably mounted in the supporting block, the top end of the push plate is attached to the left side of the bottom end of the rotary pressing block, sliding rods are symmetrically and fixedly mounted at the front end and the rear end of the push plate, square through holes are symmetrically formed in the front end and the rear end of the supporting block, a second guide rod is fixedly mounted in the square through holes, a sliding rod is mounted on the annular side face of the second guide rod, a fifth spring is mounted on the annular side face of the second guide rod, and the five ends of the fifth spring are fixedly mounted on the left wall inside the square through holes and the sliding rods respectively.

As still further scheme of the invention, the left end of the supporting block is symmetrically and fixedly provided with two fixed blocks, the left end of the fixed block is provided with a limit groove, one ends of the two sliding rods, which are far away from each other, are respectively provided with a rotating pin in a rotating way, the annular side surface of each rotating pin is provided with a rotating block, one end of each rotating block, which is close to the supporting block, is fixedly provided with a limit square, and the limit square is arranged in the limit groove.

(III) beneficial effects

Compared with the prior art, the invention provides the FFU shell formed by circular arc forging and pressing, which has the following beneficial effects:

1. through the design of the round-sky-square structure of the shell body, the air flow can not stay the vortex in the shell body, the fan can normally operate in a low-power state, the energy loss is reduced, the noise is reduced, the uniformity of wind is improved, and meanwhile, the performance of the outer shell bearing external force can be increased through the circular arc structure, so that the shell body is not easy to deform, the metal material for manufacturing the shell body can be saved, and the production and processing cost is reduced.

2. The design through U type piece and triangular bar is convenient for with bracing piece one end joint inside hollow cylinder, and then the installation of being convenient for the fan, the bracing piece upwards moves and extrudees the triangular bar for the triangular bar removes, and the triangular bar removes and drives U type piece and remove, and triangular bar and U type piece remove simultaneously and drive the first square bar of guide arm and remove, and then stretch four springs, make four spring force that produces of spring, when the bracing piece passes the triangular bar that is located the downside, under the effect of four spring force of spring, U type piece and triangular bar remove to reset, and then with bracing piece joint between two triangular bars, realize bracing piece and fan preliminary installation inside hollow cylinder.

3. The design through toper piece and spring three is convenient for the connection of square and U type piece, install the hollow cylinder inside the circular through-hole on plectane top, make L type kelly peg graft inside the cylinder hole simultaneously, and then be convenient for square and U type piece align, at hollow cylinder downstream in-process, the inside toper piece of U type piece receives the extrusion shrink of plectane and gets into square hole inslot portion, and extrude spring three, make spring three produce elasticity, when toper piece aligns with the spacing groove, under the effect of spring three elasticity, the toper piece removes and gets into corresponding spacing inslot portion, and then realize the connection of U type piece and square, realize primarily installing hollow cylinder on the plectane.

4. The square block is pushed into the hollow cylinder through the cylindrical compression bar, the cylindrical compression bar moves downwards to extrude the inclined surface round bar, the inclined surface round bar moves to drive the square block to move into the hollow cylinder, the stability of the installation of the hollow cylinder is improved, the square block moves to drive the U-shaped block to move, one end of the support rod enters the U-shaped block, and the stability of the installation of the support rod and the fan is improved.

5. Through the push pedal extrusion rotation briquetting rotation, and then promote clamping ring and cylinder depression bar to remove, the slide bar removes and drives the push pedal and remove, the push pedal removes and extrudees the rotation briquetting for rotate the briquetting and rotate around the fixed pin, rotate the briquetting and rotate the torsional spring and extrude, make the torsional spring produce torsion, the torsion of torsional spring is convenient for rotate the rotation reset of briquetting, rotate the briquetting and rotate the clamping ring and extrude, make the clamping ring move down, the clamping ring moves down and drives cylinder depression bar move down, and then be convenient for promote the inclined plane pole and remove, realize hollow cylinder's stable installation.

6. The position at the fixed block is installed to the rotation through the rotating block, fixed push pedal and slide bar, drive the rotating block and spacing square remove when the slide bar removes to the inside left side of supporting shoe, rotate the rotating block around rotating, the rotating block rotates and drives spacing square removal, when spacing square and spacing groove are in same horizontal plane, stop rotatory rotating block, under the effect of five elastic forces of spring, the slide bar reverse movement drives the rotating block and removes, and then drive spacing square removal gets into the spacing inslot portion of fixed block, play the fixed purpose of rotating block of joint and slide bar.

Drawings

FIG. 1 is a schematic perspective view of a FFU housing formed by circular arc forging;

FIG. 2 is a schematic diagram of a cross-sectional structure of a circular plate of a FFU housing formed by circular arc forging;

FIG. 3 is a schematic view of a partial enlarged structure of a portion A of a FFU housing formed by circular arc forging;

FIG. 4 is a schematic diagram of the assembly structure of a U-shaped block of the FFU housing formed by circular arc forging and pressing;

FIG. 5 is a schematic view of a part B of a FFU housing formed by circular arc forging;

FIG. 6 is a schematic diagram of a rotational press block assembly structure of a circular arc shaped forging and pressing FFU housing according to the present invention;

fig. 7 is a schematic diagram of a partial enlarged structure of a C-position of a circular arc forging and pressing FFU housing according to the present invention.

In the figure: 1. a housing body; 2. a circular plate; 3. a hollow cylinder; 4. a protective net; 5. a support rod; 6. a fan; 7. a square block; 8. a U-shaped block; 9. a triangular bar; 10. a limit rod; 11. a beveled round bar; 12. a cylindrical compression bar; 13. a first spring; 14. a second spring; 15. a compression ring; 16. a conical block; 17. a third spring; 18. a first guide rod; 19. square rods; 20. a spring IV; 21. an L-shaped clamping rod; 22. a support block; 23. rotating the pressing block; 24. a torsion spring; 25. a push plate; 26. a slide bar; 27. a second guide rod; 28. a spring V; 29. a fixed block; 30. a rotating block; 31. a limit square; 32. rectangular grooves; 33. square through holes; 34. a rotation pin; 35. a fixing pin.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-7, the circular arc forging forming FFU housing comprises a housing body 1, a circular plate 2, a hollow cylinder 3, a protection net 4, a support rod 5 and a fan 6, wherein the circular plate 2 is welded at the top end of the housing body 1, the housing body 1 is of a dome-shaped structure, the design not only ensures that air flow cannot stay vortex in the housing body 1, reduces energy loss and noise, but also can save metal materials for manufacturing the housing body 1, the top end of the circular plate 2 is provided with a circular through hole, the hollow cylinder 3 is clamped in the circular through hole, the design is convenient for installing the hollow cylinder at the top end of the circular plate 2, the bottom end of the hollow cylinder 3 is flush with the bottom end of the circular plate 2, the protection net 4 is welded at the upper side in the hollow cylinder 3, the protection net 4 is designed to prevent large sundries of individuals from entering the housing body 1, more than two support rods 5 are clamped at the lower side in the hollow cylinder 3, the two or more support rods 5 form a support frame, the top end of the support frame is provided with a fan 6, the design of the fan 6 is convenient for introducing external air into the shell body 1, four inclined round rods 11 are uniformly and movably arranged in the circular plate 2, one end of each inclined round rod 11 is close to one end of each hollow cylinder 3 and is welded with a square 7, four square holes are uniformly processed on the annular side surface of each hollow cylinder 3, one end of each square 7 is clamped in each square hole, the design of each square 7 and each square hole is convenient for clamping each hollow cylinder 3 in the circular plate 2, the interior of each hollow cylinder 3 is uniformly provided with two or more limiting rods 10, two adjacent limiting rods 10 are respectively positioned at two sides of each square hole, one end of each supporting rod 5 extends into the interior of each two adjacent limiting rods 10, the design of each limiting rod 10 prevents the support frame formed by the supporting rods 5 from rotating in the hollow cylinder, U-shaped blocks 8 are movably arranged in each square hole, u type piece 8 one end is connected with square 7, bracing piece 5 one end extends to U type piece 8 inside, this design avoids bracing piece 5 to slide from top to bottom in hollow cylinder inside, and then be convenient for bracing piece 5 and fan 6 install inside hollow shell, U type piece 8 is close to two triangular poles 9 of bracing piece 5 one side symmetry welding, and two triangular poles 9 are located bracing piece 5 upper and lower both sides, the design of triangular pole 9 is convenient for bracing piece 5 remove and extrudees U type piece 8, and then be convenient for take out bracing piece 5 and fan 6 from hollow cylinder inside, four cylinder depression bars 12 of even movable mounting in plectane 2 top, cylinder depression bar 12 bottom extends to plectane 2 inside and laminating mutually with inclined plane round bar 11, cylinder depression bar 12's design is convenient for extrude the inclined plane depression bar, cylinder depression bar 12 top fixed mounting has clamping ring 15, clamping ring 15's design is convenient for promote four cylinder depression bars 12 downwardly moving simultaneously.

In the invention, a first spring 13 is assembled on the annular side surface of the inclined plane round rod 11, two ends of the first spring 13 are respectively welded on the square 7 and the inner wall of the circular plate 2, the first spring 13 is designed to facilitate the movement and the restoration of the inclined plane round rod 11 and the square 7, a second spring 14 is assembled on the annular side surface of the cylindrical pressing rod 12, the upper end and the lower end of the second spring 14 are respectively welded at the bottom end of the pressing ring 15 and the top end of the circular plate 2, the design of the second spring 14 facilitates the movement and the restoration of the pressing ring 15 and the cylindrical pressing rod 12, more than two L-shaped clamping rods 21 are uniformly welded on the annular side surface of the hollow cylinder 3, more than two cylindrical holes are uniformly processed at the top end of the circular plate 2, the bottom ends of the L-shaped clamping rods 21 extend into the cylindrical holes, the design of the L-shaped clamping rods 21 and the cylindrical holes facilitate the limitation of the positions of the hollow cylinder inserted into the circular through holes, and the alignment and the installation of the square 7 and the U-shaped block 8 are facilitated, four square hole grooves are uniformly formed in one end, close to the square 7, of the U-shaped block 8, a conical block 16 is movably mounted in the square hole groove, a spring III 17 is welded at one end of the conical block 16, the other end of the spring III 17 is welded in the square hole groove, four limit grooves are uniformly formed in one end, close to the U-shaped block 8, of the square block 7, one end of the conical block 16 extends into the limit grooves, the limit grooves and the conical block 16 are designed to facilitate connection of the square block 7 and the U-shaped block 8, the spring III 17 is designed to facilitate ejection of the conical block 16 into the limit grooves, rectangular grooves 32 are formed in the front end of the U-shaped block 8 and the front end of the triangular rod 9, a guide rod I18 is welded in the rectangular grooves 32, a square rod 19 is movably mounted on the annular side face of the guide rod I18, one end of the square rod 19 is welded on one of the limit rods 10, the guide rod I18 and the square rod 19 are designed to facilitate sliding mounting of the U-shaped block 8 and the triangular rod 9 on one of the limit rods 10, the annular side surface of the first guide rod 18 is provided with a fourth spring 20, two ends of the fourth spring 20 are welded on the square rod 19 and the inner wall of the rectangular groove 32 respectively, and the fourth spring 20 is designed to facilitate the movement and the resetting of the U-shaped block 8 and the triangular rod 9.

In particular, four supporting blocks 22 are uniformly arranged at the top end of the shell body 1 through screws, grooves are formed in the top end of each supporting block 22, fixing pins 35 are welded in the grooves, rotating press blocks 23 are rotatably arranged on annular side surfaces of the fixing pins 35 through bearings, the design of the fixing pins 35 is convenient for rotatably arranging the rotating press blocks 23, one end of each rotating press block 23 is attached to the top end of each press ring 15, the design of each rotating press block 23 extrudes the corresponding press ring 15, further, the moving of each press ring 15 is convenient, torsion springs 24 are welded on the annular side surfaces of the fixing pins 35, the outer sides of the torsion springs 24 are welded in the supporting blocks 22, the design of each torsion springs 24 is convenient for rotating the corresponding press blocks 23 to reset, further, the moving of each press ring 15 is convenient for resetting, pushing plates 25 are movably arranged in the supporting blocks 22, the top ends of the pushing plates 25 are attached to the left sides of the bottom ends of the corresponding press blocks 23 to rotate, slide bars 26 are symmetrically welded at the front and back ends of the pushing plates 25, square through holes 33 are symmetrically machined at the front end and the rear end of the supporting block 22, a second guide rod 27 is welded in the square through holes 33, a sliding rod 26 is slidably installed on the annular side surface of the second guide rod 27, the stability of horizontal movement of the sliding rod 26 is improved by the design of the second guide rod 27, the sliding rod 26 is convenient for driving the pushing plate 25 to move, a spring five 28 is assembled on the annular side surface of the second guide rod 27, two ends of the spring five 28 are respectively welded on the left wall in the square through holes 33 and the sliding rod 26, the design of the spring five 28 is convenient for the sliding rod 26 and the pushing plate 25 to move and reset, two fixed blocks 29 are symmetrically welded at the left end of the supporting block 22, a limit groove is machined at the left end of the fixed block 29, a rotating pin 34 is rotatably installed at one end, far away from each other, of the two sliding rods 26 is rotatably installed through a bearing, a rotating block 30 is welded on the annular side surface of the rotating pin 34, the rotating block 30 is convenient to rotate and installed on the sliding rod 26, the rotating block 30 is close to the support block 22 one end welding has spacing square 31, and spacing square 31 installs in the spacing inslot portion, and the fixed rotating block 30 of joint and the position of slide bar 26 are convenient for to stopper and spacing inslot design, and then the fixed push pedal 25's of being convenient for position.

The working principle of the embodiment is as follows: when the fan 6 is required to be installed, the supporting rod 5 is installed inside the hollow cylinder, the supporting rod 5 is installed between two adjacent limiting rods 10, the supporting rod 5 moves upwards to extrude the triangular rods 9, the triangular rods 9 move to drive the U-shaped blocks 8 to move, the triangular rods 9 and the U-shaped blocks 8 move simultaneously to drive the guide rods 18 to move along the square rods 19, the springs four 20 are stretched, the springs four 20 generate elastic force, when the supporting rod 5 passes over the triangular rods 9 positioned on the lower side, under the action of the elastic force of the springs four 20, the U-shaped blocks 8 and the triangular rods 9 move to reset, the supporting rod 5 is clamped between the two triangular rods 9, the preliminary installation of the supporting rod 5 and the fan 6 inside the hollow cylinder is realized, then the hollow cylinder is installed inside a circular through hole at the top end of the circular plate 2, meanwhile the L-shaped clamping rods 21 are spliced inside the cylindrical holes, and then the square 7 and the U-shaped block 8 are convenient to align, in the downward moving process of the hollow cylinder, the conical block 16 in the U-shaped block 8 is extruded and contracted by the circular plate 2 to enter the square hole groove, the spring III 17 is extruded, the spring III 17 generates elastic force, when the conical block 16 is aligned with the limit groove, under the action of the elastic force of the spring III 17, the conical block 16 moves into the corresponding limit groove, and then the connection of the U-shaped block 8 and the square 7 is realized, the preliminary installation of the hollow cylinder on the circular plate 2 is realized, then a user slides the slide bar 26, the slide bar 26 moves along the guide rod II 27 and extrudes the spring V28, so that the elastic force of the spring V28 generates elastic force, the movement of the slide bar 26 is convenient for the reset of the slide bar 28, the slide bar 26 moves to drive the push plate 25, the push plate 25 moves to extrude the rotary press block 23, so that the rotary press block 23 rotates around the fixing pin 35, the rotation of the rotary pressing block 23 extrudes the torsion spring 24, the torsion spring 24 generates torsion, the torsion of the torsion spring 24 is convenient for the rotary reset of the rotary pressing block 23, the rotary pressing block 23 rotates to extrude the pressing ring 15, the pressing ring 15 moves downwards, the cylindrical pressing rod 12 is driven to move downwards, and the spring second 14 is extruded, the spring second 14 generates elasticity, the elasticity of the spring second 14 is convenient for the movable reset of the pressing ring 15 and the cylindrical pressing rod 12, the cylindrical pressing rod 12 moves downwards to extrude the inclined plane round rod 11, the inclined plane round rod 11 moves to drive the square 7 to move into the hollow cylinder, the stability of the installation of the hollow cylinder is improved, the square 7 moves to stretch the spring first 13, the spring first 13 generates elasticity, the elasticity of the spring first 13 is convenient for the movement reset of the square 7 and the inclined plane round rod 11, the square 7 moves and drives the U-shaped block 8 to move, one end of the supporting rod 5 enters the U-shaped block 8, the stability of the supporting rod 5 is improved, the stability of the installation of the supporting rod 5 and the fan 6 is improved, the elastic force 26 drives the rotating block 30 and the limiting block 31 to move, when the pushing plate 25 moves to the left side of the supporting block 22, the rotating block 30 rotates around the rotating block 31 to rotate around the rotating block 30, the rotating block 30 moves around the rotating block 30 and the sliding block 30 to move reversely, the sliding rod 30 moves the sliding rod 30 to the sliding rod 30, and moves reversely to the sliding rod 30, and then moves the sliding rod 30 to rotate and moves the sliding rod 30, and rotates to rotate 30, and the sliding rod 30 to rotate and rotates to rotate and the sliding rod 30 to rotate 30, and rotates to rotate the sliding rod 30, and rotates the sliding rod 30 to move the sliding rod 30. The rotary pressing block 23 does not rotate and continuously presses the pressing ring 15.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

In the description herein, it should be noted that the terms "coupled," "connected," and "connected," should be construed broadly, and may be either permanently connected, detachably connected, or integrally connected, for example, unless otherwise specifically indicated and defined; the connection may be mechanical connection, electrical connection, direct connection, or indirect connection via an intermediary. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In this description, it should be noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a convex forging and pressing shaping FFU casing, includes casing main part (1), plectane (2), hollow section of thick bamboo (3), protection network (4), bracing piece (5) and fan (6), circular through-hole has been seted up on casing main part (1) top fixed mounting has plectane (2), and circular through-hole internally mounted has hollow section of thick bamboo (3), hollow section of thick bamboo (3) bottom and plectane (2) bottom parallel and level, protection network (4) are installed to hollow section of thick bamboo (3) inside upside, two or more bracing pieces (5) are installed to hollow section of thick bamboo (3) inside downside, and two or more bracing pieces (5) constitute a support frame, fan (6) are installed on the support frame top, characterized in that, four inclined plane round bars (11) of inside even slidable mounting of plectane (2), and inclined plane round bar (11) one end is close to hollow section of thick bamboo (3) one end fixed mounting have square (7), four square holes are evenly seted up on the annular square side of hollow section of thick bamboo (3), square (7) one end joint is inside the hollow hole, two or more than two adjacent square bars (10) are located two adjacent two spacing bars (10) in two adjacent spacing bars (10) respectively, the square hole internally sliding mounting has U type piece (8), U type piece (8) one end is connected with square (7), bracing piece (5) one end extends to inside U type piece (8), U type piece (8) are close to two triangular bars (9) of bracing piece (5) one side symmetry fixed mounting, and two triangular bars (9) are located bracing piece (5) upper and lower both sides, four cylinder depression bars (12) of plectane (2) top even sliding mounting, cylinder depression bar (12) bottom extends to plectane (2) inside and laminating mutually with inclined plane round bar (11), cylinder depression bar (12) top fixed mounting has clamping ring (15).

2. The circular arc forging and pressing forming FFU shell according to claim 1, wherein a first spring (13) is installed on the annular side face of the inclined circular rod (11), two ends of the first spring (13) are fixedly installed on the square block (7) and the inner wall of the circular plate (2) respectively, a second spring (14) is installed on the annular side face of the cylindrical pressing rod (12), the upper end and the lower end of the second spring (14) are fixedly installed at the bottom end of the pressing ring (15) and the top end of the circular plate (2) respectively, more than two L-shaped clamping rods (21) are evenly installed on the annular side face of the hollow cylinder (3), more than two cylindrical holes are evenly formed in the top end of the circular plate (2), and the bottom end of the L-shaped clamping rods (21) extends into the cylindrical holes.

3. The circular arc forging and pressing forming FFU shell according to claim 1, wherein four square hole grooves are uniformly formed in one end, close to the square block (7), of the U-shaped block (8), a conical block (16) is slidably installed in the square hole groove, a spring III (17) is fixedly installed at one end of the conical block (16), and the other end of the spring III (17) is fixedly installed in the square hole groove.

4. The circular arc forging and pressing formed FFU housing of claim 3, wherein four limit grooves are uniformly formed in one end, close to the U-shaped block (8), of the square block (7), and one end of the conical block (16) extends into the limit grooves.

5. The circular arc forging and pressing forming FFU shell according to claim 1, wherein rectangular grooves (32) are formed in the front ends of the U-shaped blocks (8) and the front ends of triangular rods (9), guide rods I (18) are fixedly installed in the rectangular grooves (32), square rods (19) are installed on annular side faces of the guide rods I (18), one end of each square rod (19) is fixedly installed on one limiting rod (10), springs IV (20) are installed on annular side faces of the guide rods I (18), and two ends of each spring IV (20) are fixedly installed on the corresponding square rods (19) and the inner walls of the rectangular grooves (32).

6. The circular arc forging and pressing forming FFU shell according to claim 1, wherein four supporting blocks (22) are uniformly arranged at the top end of the shell body (1), grooves are formed in the top ends of the supporting blocks (22), fixing pins (35) are fixedly arranged in the grooves, rotating pressing blocks (23) are rotatably arranged on annular side surfaces of the fixing pins (35), one ends of the rotating pressing blocks (23) are attached to the top ends of the pressing rings (15), torsion springs (24) are fixedly arranged on the annular side surfaces of the fixing pins (35), and the outer sides of the torsion springs (24) are fixedly arranged in the supporting blocks (22).

7. The FFU housing according to claim 6, wherein the support block (22) is internally slidably provided with a push plate (25), the top end of the push plate (25) is attached to the left side of the bottom end of the rotary pressing block (23), two symmetrical ends of the push plate (25) are fixedly provided with a slide bar (26), two symmetrical ends of the support block (22) are provided with square through holes (33), two guide rods (27) are fixedly provided in the square through holes (33), two annular sides of the two guide rods (27) are provided with the slide bar (26), two annular sides of the two guide rods (27) are provided with five springs (28), and two ends of the five springs (28) are respectively fixedly provided on the left wall inside the square through holes (33) and the slide bar (26).

8. The circular arc forging and pressing forming FFU housing of claim 7, wherein two fixing blocks (29) are symmetrically and fixedly installed at the left end of the supporting block (22), a limiting groove is formed in the left end of the fixing block (29), a rotating pin (34) is rotatably installed at one end, far away from each other, of each sliding rod (26), a rotating block (30) is installed on the annular side face of the rotating pin (34), a limiting square block (31) is fixedly installed at one end, close to the supporting block (22), of each rotating block (30), and the limiting square block (31) is installed inside the limiting groove.