CN112935333A

CN112935333A - Lightweight reticular hollow screw and production and processing device thereof

Info

Publication number: CN112935333A
Application number: CN202110110859.8A
Authority: CN
Inventors: 王浩凌; 谭锋
Original assignee: Hunan Shenyi Hardware Standard Parts Co ltd
Current assignee: Hunan Shenyi Hardware Standard Parts Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-06-11
Anticipated expiration: 2041-01-27
Also published as: CN112935333B

Abstract

The invention discloses a light-weight reticular hollow screw and a production and processing device thereof, belonging to the technical field of screws, wherein the hollow screw comprises a screw rod, a screw cap fixed at one end of the screw rod and a sealing element; the screw rod is provided with a through hole at one end far away from the screw cap, the through hole extends into the screw cap, and the screw rod and the screw cap are made of carbon fiber silk-screen structural materials; a seal is mounted at the perforation opening and is for sealing the perforation. The production processing device comprises a fixing device, a cylinder, a base, a plug and an electric drill; the fixing device comprises an installation column and a sealing cover, a cavity is arranged in the installation column, and the sealing cover is connected to one end of the installation column through a bolt so that the screw is limited in the cavity; the side wall of the cavity is provided with a through hole and an outlet, and the electric drill is used for drilling the screw through the through hole so as to form a through hole on the screw; the cylinder is used for driving the mounting column to incline downwards along the direction of the through hole. According to the invention, the carbon fiber mesh-shaped structural material is adopted to manufacture the screw, and the through hole is formed in the screw, so that the light weight of the screw is realized.

Description

Lightweight reticular hollow screw and production and processing device thereof

Technical Field

The invention relates to the technical field of screws, in particular to a light-weight reticular hollow screw and a production and processing device thereof.

Background

Screws are a common fastener and are widely used in machinery, electrical appliances and buildings. Generally, the material is metal or plastic, and is cylindrical, and the grooves with the concave and convex surfaces are called as screw threads.

The traditional fastening screw is mostly of a solid body structure and is widely used, but the bolt structure of the solid body is relatively heavy relative to the whole weight, the heavy weight directly causes the cost to be increased, and the resource is not saved; the larger weight also causes the weight of the matched object to be increased; the solid structure has poor permeability of the axis during heat treatment.

In view of the above, the present invention provides a light weight reticular hollow screw and a production and processing device thereof.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a light-weight reticular hollow screw and a production and processing device thereof.

In order to achieve the purpose, the invention provides the following technical scheme:

a lightweight mesh hollow screw comprises a screw rod, a screw cap and a sealing element, wherein the screw cap is fixed at one end of the screw rod;

the screw rod is provided with a through hole at one end far away from the screw cap, the through hole extends into the screw cap, and the screw rod and the screw cap are made of carbon fiber mesh structure materials;

the seal is mounted at the perforation opening and is for sealing the perforation.

More preferably: the sealing element comprises a sealing plate and a plurality of dovetail blocks fixed on the sealing plate, the sealing plate is circular, the dovetail blocks are arranged in a plurality, and the dovetail blocks are uniformly distributed on the periphery of the sealing plate;

the screw rod is kept away from nut one end set up with the spacing groove of sealing plate looks adaptation, the spacing groove is seted up all around with the forked tail piece of forked tail piece looks adaptation, the sealing plate with the forked tail piece all adopts soft rubber to make.

A production and processing device for lightweight reticular hollow screws is used for drilling the lightweight reticular hollow screws to form through holes and comprises a fixing device, a cylinder, a base, a plug and an electric drill;

the fixing device comprises an installation column and a sealing cover, a cavity is arranged in the installation column, one end, close to the sealing cover, of the cavity is an opening end, and the sealing cover is connected to one end of the installation column through a bolt so that the screw is limited in the cavity;

the side wall of the cavity is provided with a through hole and a discharge hole, the through hole and the discharge hole are both positioned at one end, far away from the sealing cover, of the mounting column, the electric drill is used for penetrating through the through hole to drill the screw rod so as to form a through hole in the screw, and the plug is used for being plugged in the through hole to close the cavity;

the base is located the erection column below, the cylinder is located the base with between the erection column, the cylinder respectively with erection column, base are articulated, be fixed with the boss on the base, the boss with the erection column is articulated, the boss with the cylinder is close to respectively the erection column both ends, the cylinder is used for driving the erection column is followed the through-hole direction downward sloping.

More preferably: the cavity is including the first cavity, second cavity and the third cavity that set gradually, first cavity is seted up the erection column is kept away from through-hole one end, sealed lid is being close to the cooperation groove has been seted up to erection column one side, the cooperation groove with first cavity all is used for holding the nut, the screw rod passes the second cavity just extends and is in the third cavity, third cavity internal diameter is close to the through-hole direction grow gradually.

More preferably: the mounting structure is characterized in that a mounting block and a fixing block are fixed at the bottom of the mounting column, the mounting block is hinged to the boss, the air cylinder comprises a piston rod, the piston rod of the air cylinder is hinged to the fixing block, a mounting seat is fixed on the base, and the air cylinder is hinged to the mounting seat.

More preferably: and an air pipe connector is arranged on the plug, one end of the air pipe connector is communicated with the third cavity, and the other end of the air pipe connector is used for being connected with an external air supply pipe so as to blow air into the third cavity and the through hole through the external air supply pipe.

More preferably: the device also comprises an air outlet hose and a dust removal device, wherein one end of the air outlet hose is connected with the discharge port, and the other end of the air outlet hose is connected with the dust removal device.

More preferably: the dust collector comprises a dust collection box, a first cavity, a second cavity and a third cavity are sequentially arranged in the dust collection box, a filter screen is arranged between the first cavity and the second cavity, filter cloth is arranged between the second cavity and the third cavity, the first cavity and the third cavity are communicated through an air outlet hose, and a clean air outlet for air discharge is formed in the third cavity.

More preferably: the first cavity with second cavity bottom all is provided with down the hopper, hopper bottom center is provided with the slag discharging hole down.

More preferably: the inner diameter of the second cavity is the same as the diameter of the screw.

In conclusion, the invention has the following beneficial effects: according to the invention, the carbon fiber mesh-shaped structural material is adopted to manufacture the screw, and the through hole is formed in the screw, so that the weight of the screw can be greatly reduced, and the light weight of the screw is realized. The one end of perforation is sealed, though the other end is the opening setting, but the closing plate is installed to the opening part, therefore impurity such as external greasy dirt, rainwater, dust is difficult for getting into the perforation, can form better protection to the screw, prevents that some have corrosive material from getting into the perforation, causes the screw to corrode. Because the sealing plate and the dovetail block are both made of soft rubber, the sealing plate and the dovetail block can be well embedded in the limiting groove and the dovetail groove, are not easy to fall off, and are convenient to disassemble.

The working process of the hollow screw production and processing device is as follows: during drilling, the sealing cover is firstly opened, then the screw is inserted into the cavity, so that the screw rod passes through the first cavity and then extends into the second cavity, then the sealing cover is covered and locked through the bolt, and the nut is limited in the matching groove and the groove at the moment. After the screw is limited and fixed, the electric drill extends into the second cavity through the through hole, and at the moment, the screw can be drilled, so that a through hole is formed. After drilling is completed, disintegrating slag and fragment cleaning are carried out, when disintegrating slag and fragment cleaning are carried out, the through hole is plugged by the plug, the air cylinder is started, so that the mounting column drives the screw to incline downwards along the direction of the through hole, and then air is passed through the second cavity and the through hole through the air pipe joint. After the air passes through, impurities in the second cavity and the through hole enter the dust removal box along with the air, the gas containing the fragments entering the dust removal box sequentially passes through the first cavity, the second cavity and the third cavity, after solid impurities are filtered by the filter screen and the filter cloth, the clean gas is discharged outwards through the clean gas outlet, and the fragments are discharged outwards through the slag discharge port. The device is convenient for intensively collecting the slag and the scraps generated by drilling, and improves the working environment.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment, which is mainly used for embodying the specific structure of a cannulated screw;

FIG. 2 is a schematic structural view of the embodiment, which is mainly used for embodying the structure of a hollow screw before a sealing element is installed;

FIG. 3 is a schematic structural diagram of an embodiment, which is mainly used for embodying the structure of a sealing member;

FIG. 4 is a schematic structural diagram of an embodiment, which is mainly used for embodying the specific structure of a hollow screw production and processing device;

fig. 5 is a schematic structural diagram of the embodiment, which is mainly used for embodying a matching structure between the mounting post and the sealing cover.

In the figure, 1, a screw cap; 2. a screw; 3. perforating; 4. a seal member; 41. a sealing plate; 42. a dovetail block; 5. a limiting groove; 6. a dovetail groove; 711. mounting a column; 712. a sealing cover; 713. a cavity; 7131. a groove; 7132. a first cavity; 7133. a second cavity; 714. mounting blocks; 715. a fixed block; 716. an outlet port; 717. a through hole; 718. a mating groove; 719. mounting holes; 72. a cylinder; 73. a base; 74. a boss; 75. a mounting seat; 76. a plug; 77. a gas pipe joint; 78. an air outlet hose; 791. a dust removal box; 792. a first chamber; 793. a second chamber; 794. a third chamber; 795. a purified gas outlet; 796. filtering with a screen; 797. filtering cloth; 798. feeding a hopper; 799. a slag discharge port.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

Example (b): a light weight reticular hollow screw and a production processing device thereof are disclosed, as shown in figures 1-5, the hollow screw comprises a screw rod 2, a screw cap 1 fixed at one end of the screw rod 2 and a sealing element 4 arranged on the screw rod 2. The end of the screw rod 2 far away from the screw cap 1 is provided with a through hole 3, the through hole 3 extends into the screw cap 1, and in order to reduce the mass of the screw, the screw rod 2 and the screw cap 1 are preferably made of carbon fiber mesh structure materials. The axial direction of the through hole 3 is consistent with the axial direction of the screw rod 2. A sealing member 4 is installed at the opening of the penetration hole 3 and serves to seal the penetration hole 3, and preferably, the sealing member 4 includes a sealing plate 41 and a dovetail block 42 fixed to a side edge of the sealing plate 41. The sealing plate 41 is circular, the dovetail blocks 42 are arranged in a plurality, and the dovetail blocks 42 are uniformly distributed on the periphery of the sealing plate 41. The screw 2 is kept away from nut 1 one end and is seted up the spacing groove 5 with closing plate 41 looks adaptation, and spacing groove 5 is circular and the centre of a circle is located perforation 3 center pin, and the diameter of spacing groove 5 is greater than perforation 3 diameter. Limiting groove 5 is seted up all around with forked tail piece 42 of forked tail piece looks adaptation 42, and limiting groove 5, 6 degree of depth of dovetail are the same with closing plate 41, forked tail piece 42 thickness respectively to make closing plate 41, forked tail piece 42 inlay behind limiting groove 5, dovetail 6, closing plate 41, forked tail piece 42 surface and screw rod 2 terminal surface flush. In order to facilitate the attachment and detachment of the sealing plate 41 and the dovetail block 42, it is preferable that both the sealing plate 41 and the dovetail block 42 are made of soft rubber.

In the technical scheme, the carbon fiber mesh structure material is adopted to manufacture the screw, and the through hole 3 is formed in the screw, so that the weight of the screw can be greatly reduced, and the light weight of the screw is realized. One end of the through hole 3 is closed, and although the other end is provided with an opening, the opening is provided with the sealing plate 41, so that impurities such as external oil stain, rainwater and dust are not easy to enter the through hole 3, the screw can be well protected, and corrosive substances are prevented from entering the through hole 3, so that the screw is corroded. Because the sealing plate 41 and the dovetail block 42 are both made of soft rubber, the sealing plate 41 and the dovetail block 42 can be well embedded in the limiting groove 5 and the dovetail groove 6, are not easy to fall off, and are convenient to disassemble.

Referring to fig. 1-5, in the process of processing the hollow screw, special equipment is needed to drill the light-weight reticular hollow screw to form the through hole 3, and therefore the invention also provides a device for producing and processing the light-weight reticular hollow screw, the through hole 3 can be drilled on the screw, and the scraps generated in the drilling process can be collected in a centralized manner, manual cleaning of the scraps after drilling is not needed, the labor intensity is reduced, and the working environment is improved.

Referring to fig. 1 to 5, the preferred production and processing device for the lightweight mesh hollow screw comprises a fixing device, a cylinder 72, a base 73, a plug 76, an electric drill, an air outlet hose 78 and a dust removal device. The fixing device is used for limiting and fixing the screw so as to drill the screw through an electric drill. The fixing device comprises a mounting column 711 and a sealing cover 712, wherein a cavity 713 is arranged in the mounting column 711, one end of the cavity 713, close to the sealing cover 712, is an open end, and the sealing cover 712 is bolted at one end of the mounting column 711 to seal the open end of the cavity 713, so that the screw is limited in the cavity 713. Specifically, the sealing cover 712 and the mounting column 711 are both provided with mounting holes 719 for mounting bolts, and the mounting block 714 on the sealing cover 712 corresponds to the mounting block 714 on the mounting column 711, so that the sealing cover 712 is locked on the mounting column 711 through the bolts, and the bolts are limited and fixed in the cavity 713.

Referring to fig. 1-5, a through hole 717 and a discharge port 716 are formed in the side wall of the cavity 713, the through hole 717 and the discharge port 716 are both located at one end, away from the sealing cover 712, of the mounting column 711, the discharge port 716 and the through hole 717 are both circular holes, and the discharge port 716 is located below the through hole 717. A drill is used to drill the screw 2 through the aperture 717 to form a bore 3 in the screw, and a plug 76 is used to plug the aperture 717 to close the cavity 713 as the debris is discharged. The cavity 713 includes a first cavity 7131, a second cavity 7132 and a third cavity 7133 arranged in sequence, wherein the first cavity 7131 is opened at one end of the mounting post 711 far away from the through hole 717. The sealing cover 712 is provided with a matching groove 718 at one side close to the mounting column 711, the matching groove 718 and the first cavity 7131 are used for accommodating the nut 1, specifically, the matching groove 718 and the first cavity 7131 are butted to form a cavity matched with the nut 1, so that the nut 1 is accommodated in the matching groove 718 and the first cavity 7131, and the screw 2 is accommodated in the second cavity 7132 and the third cavity 7133. The screw 2 passes through the second cavity 7132 and extends into the third cavity 7133, the inner diameter of the third cavity 7133 is gradually enlarged in the direction close to the through hole 717, so that the third cavity 7133 is flared in the direction close to the through hole 717, and the inner diameter of the second cavity 7132 is the same as the diameter of the screw 2.

In the above technical solution, when drilling the screw, the sealing cover 712 is opened, then the screw is inserted into the cavity 713, so that the screw rod 2 extends into the third cavity 7133 after passing through the second cavity 7132, then the sealing cover 712 is covered and locked by the bolt, and at this time, the nut 1 is limited in the matching groove 718 and the first cavity 7131. After the screw is limited and fixed, the electric drill is inserted into the third cavity 7133 through the through hole 717, and then the screw can be drilled, so that the through hole 3 is formed.

Referring to fig. 1-5, the base 73 is located below the mounting column 711, the air cylinder 72 is located between the base 73 and the mounting column 711, and the air cylinder 72 is hinged to the mounting column 711 and the base 73 respectively. Preferably, the bottom of the mounting post 711 is fixed with a mounting block 714 and a fixing block 715, and the mounting block 714 and the fixing block 715 are respectively close to two ends of the bottom of the mounting post 711. The cylinder 72 is used to drive the mounting column 711 to tilt downwards towards the through hole 717, so as to tilt the screw, and facilitate pouring out the slag in the through hole 3. The base 73 is fixed with a boss 74 and a mounting seat 75, and the boss 74 and the cylinder 72 are respectively close to two ends of the mounting column 711. Specifically, the boss 74 is close to one end of the mounting column 711, which is far away from the sealing cover 712, and is hinged with the mounting column 711, the mounting seat 75 is located at one end of the mounting column 711, which is close to the sealing cover 712, and the air cylinder 72 is hinged on the mounting seat 75. The mounting block 714 is hinged with the boss 74, the air cylinder 72 comprises a piston rod, and the piston rod of the air cylinder 72 is hinged with the fixing block 715.

In the technical scheme, after drilling, slag formed by drilling can be accumulated in the third cavity 7133 and the through hole 3, in order to enable the third cavity 7133 and the through hole 3 to be arranged in an inclinable mode, after the drilling is completed, the air cylinder 72 is started, so that the mounting column 711 drives the screw to incline downwards along the direction of the through hole 717, the slag in the through hole 3 is poured outwards, and solid impurities such as chips and the like on the screw can be cleaned conveniently.

Referring to fig. 1 to 5, a gas pipe connector 77 is provided on the stopper 76, and one end of the gas pipe connector 77 communicates with the third cavity 7133 and the other end is used for connecting with an external gas supply pipe to blow gas into the through hole 3 through the external gas supply pipe, thereby blowing out the chips adhered to the third cavity 7133 and the through hole 3. One end of the air outlet hose 78 is connected to the discharge port 716, and the other end is connected to a dust removing device. Preferably, the dust removing device comprises a dust removing box 791, and a first chamber 792, a second chamber 793 and a third chamber 794 are sequentially arranged in the dust removing box 791. A screen 796 is disposed between the first chamber 792 and the second chamber 793, and a filter cloth 797 is disposed between the second chamber 793 and the third chamber 794. The first chamber 792 is communicated with the third cavity 7133 through an air outlet hose 78, and a purified air outlet 795 for discharging air is formed in the third chamber 794. The bottoms of the first chamber 792 and the second chamber 793 are both provided with a lower hopper 798, and the center of the bottom of the lower hopper 798 is provided with a slag discharge port 799 for discharging crushed slag.

In the above technical solution, when the mounting post 711 drives the screw to tilt downward along the direction of the through hole 717, the air passes through the air pipe joint 77 into the third cavity 7133 and the through hole 3, and the debris adhered to the inner walls of the third cavity 7133 and the through hole 3 is separated from the inner walls of the third cavity 7133 and the through hole 3, so that the solid impurities such as the slag in the third cavity 7133 and the through hole 3 can be effectively cleaned, the overall cleaning can be conveniently performed, and the cleaning effect is good. Because dust removal case 791 is connected through the hose 78 of giving vent to anger with third cavity 7133, the hose 78 of giving vent to anger has better compliance, consequently can not influence the erection column 711 slope, after running through the wind, impurity in third cavity 7133 and the perforation 3 will enter dust removal case 791 with the wind, the gaseous debris that gets into dust removal case 791 will pass through first cavity 792, second cavity 793 and third cavity 794 in proper order, behind filter screen 796 and filter cloth 797 filtering solid impurity, clean gas is outwards discharged through net gas export 795, and the debris will outwards be discharged through row cinder notch 799. The device is convenient for intensively collecting the slag and the scraps generated by drilling, and improves the working environment.

The working process and the principle of the hollow screw production and processing device are as follows: during drilling, the sealing cover 712 is opened, the screw is inserted into the cavity 713, so that the screw rod 2 extends into the third cavity 7133 after passing through the second cavity 7132, then the sealing cover 712 is covered and locked by the bolt, and the nut 1 is limited in the matching groove 718 and the first cavity 7131. After the screw is limited and fixed, the electric drill is inserted into the third cavity 7133 through the through hole 717, and then the screw can be drilled, so that the through hole 3 is formed. And after the drilling is finished, cleaning the crushed slag and the chippings, wherein when the crushed slag and the chippings are cleaned, the plug 76 blocks the through hole 717, the air cylinder 72 is started, so that the mounting column 711 drives the screw to incline downwards along the direction of the through hole 717, and then air flows into the third cavity 7133 and the through hole 3 through the air pipe joint 77. After the wind passes through, impurities in the third cavity 7133 and the through hole 3 enter the dust removing box 791 along with the wind, the debris-containing gas entering the dust removing box 791 sequentially passes through the first chamber 792, the second chamber 793 and the third chamber 794, and after solid impurities are filtered by the filter screen 796 and the filter cloth 797, the clean gas is discharged outwards through the clean gas outlet 795, and the debris is discharged outwards through the residue discharge port 799.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that several improvements and modifications without departing from the principle of the present invention will occur to those skilled in the art, and such improvements and modifications should also be construed as within the scope of the present invention.

Claims

1. The utility model provides a netted hollow screw of lightweight, includes screw rod (2) and fixes nut (1) of screw rod (2) one end, its characterized in that: further comprising a seal (4);

a through hole (3) is formed in one end, far away from the nut (1), of the screw rod (2), the through hole (3) extends into the nut (1), and the screw rod (2) and the nut (1) are made of carbon fiber mesh-structured materials;

the sealing element (4) is arranged at the opening of the perforation (3) and is used for sealing the perforation (3).

2. A light weight reticulated cannulated screw according to claim 1, wherein: the sealing element (4) comprises a sealing plate (41) and a plurality of dovetail blocks (42) fixed on the sealing plate (41), the sealing plate (41) is circular, the dovetail blocks (42) are arranged in a plurality, and the dovetail blocks (42) are uniformly distributed on the periphery of the sealing plate (41);

the screw rod (2) is far away from one end of the nut (1) and is provided with a limiting groove (5) matched with the sealing plate (41), dovetail blocks (42) matched with the dovetail blocks (42) are arranged on the periphery of the limiting groove (5), and the sealing plate (41) and the dovetail blocks (42) are made of soft rubber.

3. A manufacturing apparatus for a lightweight reticulated cannulated screw, for drilling the lightweight reticulated cannulated screw of any of claims 1-2 to form a bore (3), the manufacturing apparatus comprising: comprises a fixing device, a cylinder (72), a base (73), a plug (76) and an electric drill;

the fixing device comprises a mounting column (711) and a sealing cover (712), a cavity (713) is arranged in the mounting column (711), one end, close to the sealing cover (712), of the cavity (713) is an open end, and the sealing cover (712) is connected to one end of the mounting column (711) through a bolt, so that the screw is limited in the cavity (713);

a through hole (717) and a discharge port (716) are formed in the side wall of the cavity (713), the through hole (717) and the discharge port (716) are both located at one end, away from the sealing cover (712), of the mounting column (711), the electric drill is used for drilling the screw rod (2) through the through hole (717) so as to form a through hole (3) in the screw rod, and the plug (76) is used for plugging in the through hole (717) so as to close the cavity (713);

the base (73) is located installing column (711) below, cylinder (72) are located base (73) with between installing column (711), cylinder (72) respectively with installing column (711), base (73) are articulated, be fixed with boss (74) on base (73), boss (74) with installing column (711) are articulated, boss (74) with cylinder (72) are close to respectively installing column (711) both ends, cylinder (72) are used for driving installing column (711) follow through-hole (717) direction downward sloping.

4. The production and processing device of the lightweight mesh-like cannulated screw of claim 3, wherein: the cavity (713) comprises a first cavity (7131), a second cavity (7132) and a third cavity (7133) which are sequentially arranged, the first cavity (7131) is arranged at one end of the mounting column (711) far away from the through hole (717), the sealing cover (712) is close to one side of the mounting column (711) and provided with a matching groove (718), the matching groove (718) and the first cavity (7131) are both used for accommodating the screw cap (1), the screw rod (2) penetrates through the second cavity (7132) and extends into the third cavity (7133), and the inner diameter of the third cavity (7133) is close to the direction of the through hole (717) and gradually increases.

5. The production and processing device of the lightweight mesh-like cannulated screw of claim 3, wherein: the mounting column (711) bottom is fixed with installation piece (714) and fixed block (715), installation piece (714) with boss (74) are articulated, cylinder (72) include the piston rod, cylinder (72) piston rod with fixed block (715) are articulated, be fixed with mount pad (75) on base (73), cylinder (72) articulate on mount pad (75).

6. The production and processing device of the lightweight mesh-like cannulated screw of claim 4, wherein: be provided with on end cap (76) trachea joint (77), trachea joint (77) one end with third cavity (7133) intercommunication, the other end is used for being connected with external air supply pipe to blow in third cavity (7133) and perforation (3) through external air supply pipe.

7. The production and processing device of the lightweight mesh-like cannulated screw of claim 6, wherein: the device also comprises an air outlet hose (78) and a dust removal device, wherein one end of the air outlet hose (78) is connected with the discharge port (716), and the other end of the air outlet hose is connected with the dust removal device.

8. The production and processing device of the lightweight mesh-like cannulated screw of claim 7, wherein: dust collector includes dust removal case (791), first cavity (792), second cavity (793) and third cavity (794) have set gradually in dust removal case (791), first cavity (792) with be provided with filter screen (796) between second cavity (793), second cavity (793) with be provided with filter cloth (797) between third cavity (794), first cavity (792) with third cavity (7133) passes through air outlet hose (78) intercommunication, third cavity (794) are last to be offered and are used for gaseous exhaust net gas outlet (795).

9. The production and processing device of the lightweight mesh-like cannulated screw of claim 8, wherein: first cavity (792) with second cavity (793) bottom all is provided with down hopper (798), hopper (798) bottom center is provided with row cinder notch (799) down.

10. The production and processing device of the lightweight mesh-like cannulated screw of claim 4, wherein: the inner diameter of the second cavity (7132) is the same as the diameter of the screw (2).