A secondary impurity-removal recycling system for refining cotton, comprising a drum impurity-removal mechanism (100), a rods-and-trips impurity-removal mechanism (200) and a linter-cleaning impurity-removal mechanism (300),
- the drum impurity-removal mechanism (100) comprises a first bin shell (A1), a first induced draft fan (A2), a second induced draft fan (A3), a first drum (A4), a first motor (A5), a second motor (A6), a first connecting sleeve (A7) and a first rotary shaft (A9), a first feeding opening (A10) is configured at a side of the first bin shell (A1), in which the first drum (A4) is movably installed, and the first drum (A4) is tube shaped, a first mesh (A12) is configured on a peripheral wall of the first drum (A4), and a first scraper (A13) is configured at the first feeding opening (A10) inside the first bin shell (A1), opposite to an outer peripheral wall of the first drum (A4), one end of the first drum (A4) is provided with a first impurity-discharging pipe (A14), an outer periphery of the first impurity-discharging pipe (A14) is provided with a first annular hump (A15), the first connecting sleeve (A7) is fixedly installed on an outer wall of the first bin shell (A1), and the first impurity-discharging pipe (A14) is movably stuck in the first connecting sleeve (A7) through the first annular hump (A15), and communicates with the first connecting sleeve (A7), the first induced draft fan (A2) communicates with the first connecting sleeve (A7) through a first air duct (A16), and the first motor (A5) is drivingly connected with the first drum (A4), a discharging pipe (A19) is set at a bottom of the first bin shell (A1), and arc plates (A20) having a same centre and a same radius are configured on two side walls of the discharging pipe (A19), a impurity-absorbing cavity (A21) is configured on an outside of the arc plate (A20) on one side, and a second mesh (A22) communicating with the impurity-absorbing cavity (A21) is configured on the arc plate (A20), an impurity-outlet (A23) is set on an outer side wall of the impurity-absorbing cavity (A21), and the second induced draft fan (A3) is connected to the impurity-outlet (A23) through a second air duct (A24), the first rotary shaft (A9) is movably inserted in the discharging pipe (A19), and a second scraper (A26) is configured on the first rotary shaft (A9), opposite to an inner side wall of the arc plate (A20), the second motor (A6) is drivingly connected with the first rotary shaft (A9),
- the rods-and-trips impurity-removal mechanism (200) comprises a base (B1), a vibrating sieve bin (B2), a spring (B3), a vibrating motor (B4), a hollow axis tube (B5), a second connecting sleeve (B6), a second sealing ring (B7), a high-pressure blower (B8), a third motor (B9), a hollow body (B10), a second rotary shaft (B11), a fourth motor (B12), a canvas tube (B13) and a hose (B14), a supporting column (B15) is configured on the base (B1), and a supporting frame (B16) is configured on the vibrating sieve bin (B2), and the supporting frame (B16) of the vibrating sieve bin (B2) is installed on the supporting column (B15) through the spring (B3), the vibrating motor (B4) is fixedly installed on the vibrating sieve bin (B2), and the vibrating sieve bin (B2) is provided with a second feeding opening (B17) and a discharging opening (B18), and the second feeding opening (B17) communicates with the discharging pipe (A19) of the drum impurity-removal mechanism (100), sieving holes (B19) are configured on a bottom wall of the vibrating sieve bin (B2), in which the hollow axis tube (B5) is movably inserted, and the hollow axis tube (B5) located in the vibrating sieve bin (B2) is provided with spirally arranged rods-and-trips (B21) and a spraying tube (B22) communicating with an inside of the hollow axis tube (B5), the third motor (B9) is fixedly installed on a supporting frame (B16), and is drivingly connected to a hollow axis tube (B5), the second connecting sleeve (B6) is fixedly installed on the vibrating sieve bin (B2), a connecting head (B27) communicating with the inside of the hollow axis tube (B5) is spirally arranged on one end of the hollow axis tube (B5), and is movably stuck in the second connecting sleeve (B6) and communicates with the second connecting sleeve (B6), the second sealing ring (B7) is fixedly stuck in the second connecting sleeve (B6), the second sealing ring (B7) encircles an outside of the connecting head (B27), and the high-pressure blower (B8) is fixedly installed on the base (B1), and is connected to the second connecting sleeve (B6), the hollow body (B10) is fixedly installed on the base (B1), and is located under the vibrating sieve bin (B2), and a top wall of the hollow body (B10) is provided with an impurity-inlet (B29), the impurity-inlet (B29) of the hollow body (B10) is connected to the sieving holes (B19) of the vibrating sieve bin (B2) through the canvas tube (B13), and an impurity-discharging opening (B30) is configured at a bottom of the hollow body (B10), the second rotary shaft (B11) is movably inserted in the hollow body (B10), and a spiral rib plate (B32) is set on the second rotary shaft (B11) located in the hollow body (B10), the fourth motor (B12) is fixedly installed on the base (B1), and is drivingly connected with the second rotary shaft (B11),
- the linter-cleaning impurity-removal mechanism (300) comprises a frame (C1), a second bin shell (C2), a third induced draft fan (C3), a second drum (C4), a first licker-in (C5), a second licker-in (C6), a third licker-in (C7), a pressuring roller (C8), a bottom plate (C9), a blowing pipe (C10), a high-pressure air bag (C11), a pulse valve (C12), a fifth motor (C13), a sixth motor (C14), a seventh motor (C15) and a third connecting sleeve (C35), the second bin shell (C2) is fixedly installed on the frame (C1), and a bottom and a rear of the second bin shell (C2) are open, a third feeding opening (C18) is configured on a top wall of a front of the second bin shell (C2), and communicates with the discharging opening (B18) of the rods-and-trips impurity-removal mechanism (200), the first licker-in (C5) and the second licker-in (C6) are movably installed in the second bin shell (C2), and the second licker-in (C6) is located at the third feeding opening (C18) of the second bin shell (C2), a first spike (C21) and a second spike (C22) are configured on a periphery of the first licker-in (C5) and the second licker-in (C6), the fifth motor (C13) is drivingly connected with the first licker-in (C5) and the second licker-in (C6), the bottom plate (C9) is fixedly installed in the second bin shell (C2) and is located under the first licker-in (C5), and the bottom plate (C9) is provided with impurity-leaking holes (C28), the second drum (C4) is movably installed in the second bin shell (C4), and is tube shaped, and impurity-absorbing holes (C30) are set on a peripheral wall of the second drum (C4), a third scraper (C31) opposite to the peripheral wall of the second drum (C4) is configured at a rear of the second bin shell (C2), and a discharging hopper (C32) is set at the third scraper (C31), a second impurity-discharging pipe (C33) is configured at one end of the second drum (C4), and a second annular hump (C34) is set on an outer periphery of the second impurity-discharging pipe (C33), the third connecting sleeve (C35) is fixedly installed on an outer wall of the second bin shell (C2), and the second impurity-discharging pipe (C33) is movably stuck in the third connecting sleeve (C35) through the second annular hump (C34), and communicates with the third connecting sleeve (C35), the third induced draft fan (C3) communicates with the third connecting sleeve (C35) through a third air duct (C36), and the sixth motor (C14) is in drivingly connected with the second drum (C4), the high-pressure gas bag (C11) is fixedly installed on the frame (C1), and the pulse valve (C12) is fixedly installed on the high-pressure gas bag (C11) and communicates with the high-pressure gas bag (C11), the blowing pipe (C10) communicates with the pulse valve (C12), and is inserted in the second drum (C4), and a spraying nozzle (C39) opposite to the impurity-absorbing holes (C30) is configured on the blowing pipe (C10) located in the second drum (C4), the pressing roller (C8) is movably installed in the second bin shell (C2) and located above the second drum (C4), and the third licker-in (C7) is movably installed in the second bin shell (C2) and located diagonally above the second drum (C4), a third spike (C44) is configured on a periphery of the third licker-in (C7), and the seventh motor (C15) is drivingly connected with the third licker-in (C7).