Screw waste discharge device

Abstract

The utility model provides a screw waste discharge device which comprises a connecting base connected with a screen-free filter, an impurity discharge hole is formed in the middle of the connecting base in a penetrating mode, an impurity discharge screw is rotationally connected in the impurity discharge hole, the impurity discharge screw comprises an impurity discharge section and a connecting section which are integrally formed, and the connecting section is connected with the impurity discharge section. The impurity discharging section is located on the side, close to the screen-free filter, of the impurity discharging hole, a spiral blade used for transporting impurities is arranged on the outer side of the impurity discharging section, the connecting section is located on the side, away from the screen-free filter, of the impurity discharging hole, an impurity discharging opening is formed in the side wall of the connecting base, and the impurity discharging opening communicates with the impurity discharging hole; and the impurity removal opening is opposite to the connecting section, an impurity removal scraper is fixedly arranged on the outer side of the connecting section, and the impurity removal scraper is opposite to the impurity removal opening. And the impurity discharging scraper is additionally arranged and used for cleaning the compacted impurities, so that the condition of impurity blockage is avoided, and the impurity discharging efficiency is higher.

Description

Technical Field

[0001] The utility model relates to plastic die head accessories, and particularly to a screw waste discharging device. Background Art

[0002] At present, a Chinese patent with the publication number CN217144817U discloses a rotary scraper, which includes an integrally formed rotating part and a scraping part. A collecting cavity is formed in the middle of the rotating part. A waste discharging port is formed at one end of the rotating part, and the waste discharging port is communicated with the collecting cavity. There are at least two scraping parts and they are evenly distributed along the outer side of the rotating part. A collecting groove is formed at the end of the scraping part, and the collecting groove is communicated with the collecting cavity and penetrates through the side wall on one side of the scraping part.

[0003] During use, the rotary scraper is placed inside the box body so that the scraping part of the rotary scraper abuts against the filter plate. Then, the rotating part of the rotary scraper is coaxially connected with the rotating shaft so that the rotary scraper can rotate with the rotating shaft. After that, the waste discharging mechanism is installed inside the waste discharging port. The impurities scraped off by the scraping part can enter the collecting groove. Then, the impurities in the collecting groove can enter the collecting tank. Finally, the impurities in the collecting tank can be discharged from the waste discharging port under the action of the waste discharging mechanism.

[0004] At present, the existing waste discharging mechanisms are mostly composed of a screw, a servo motor and a reducer. The screw is rotatably connected in the collecting cavity. One end of the screw extends to the waste discharging port, and the other end of the screw protrudes from the rotating part via the collecting cavity. The servo motor is located outside the box body. The reducer is located outside the box body. The input end of the reducer is connected to the output end of the servo motor, and the output end of the reducer is connected to the screw.

[0005] However, when the impurities are driven by the screw to move from the inner side of the box body to the outer side of the box body via the collecting cavity, the impurities are likely to stagnate between the box body and the reducer, which affects the discharging efficiency of the impurities. Summary of the Invention

[0006] In view of this, the purpose of the utility model is to provide a screw waste discharging device, which has the advantage of high discharging efficiency of impurities.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a screw waste discharge device, comprising a connecting seat connected to a wire-free filter, a debris discharge hole being penetrated through the middle of the connecting seat, a debris discharge screw being rotatably connected in the debris discharge hole, the debris discharge screw comprising an integrally formed debris discharge section and a connecting section, the debris discharge section being located on the side of the debris discharge hole close to the wire-free filter, and a spiral blade for transporting impurities is provided on the outer side of the debris discharge section, the connecting section is located on the side of the debris discharge hole away from the wire-free filter, a debris discharge opening is opened on the side wall of the connecting seat, the debris discharge opening is connected with the debris discharge hole, and the debris discharge opening is opposite to the connecting section, and a debris discharge scraper is fixedly provided on the outer side of the connecting section, and the debris discharge scraper is opposite to the debris discharge opening.

[0008] Through the above technical solution, when in use, the connection seat of the waste discharge device is connected to the box body without the wire mesh filter, so that the waste discharge hole is connected to the inner cavity of the box body, and the end of the screw provided with the spiral blade extends into the box body. At the same time, a motor and a reducer are installed outside the box body without the wire mesh filter, wherein the output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the connecting section.

[0009] During operation, the motor drives the screw to rotate through the reducer, and the screw drives the impurities to move from the inner side of the box to the outer side of the box through the impurity discharge hole through the spiral blade. When the impurities move under the drive of the spiral blade, the impurities are gradually compacted in the impurity discharge hole. When the impurities move to the impurity discharge opening and contact the impurity discharge scraper, if the impurities are relatively soft, the impurity discharge scraper rotating with the screw will move the impurities, causing the impurities to break and be discharged through the impurity discharge opening. If the impurities are relatively hard, the impurity discharge scraper rotating with the screw will cut the impurities, and the chopped impurities will be discharged through the impurity discharge opening.

[0010] By adding a scraper to clean up the compacted impurities, clogging by impurities can be avoided, making the impurity discharge more efficient.

[0011] Preferably, a retaining ring is protruding from the outer side of the connecting section, and the debris removal scraper includes a fixed disk and a knife disk which are sleeved on the outer side of the connecting section, the fixed disk and the knife disk are respectively arranged on both sides of the retaining ring, and the fixed disk and the knife disk are pressed and fixed to the retaining ring by screws.

[0012] Through the above technical solution, the fixed disc and the cutter disc are fixed on both sides of the retaining ring by means of threaded parts, which is not only convenient for disassembly and assembly, but also has the advantage of more accurate positioning during installation.

[0013] Preferably, both the fixed disc and the cutter disc are provided with accommodating grooves, and the retaining ring is received in the two accommodating grooves.

[0014] Through the above technical solution, the retaining ring is received in the two receiving grooves, so that the distance between the fixed disk and the cutter disk can be effectively reduced, and the structural compactness of the above waste discharging device can be improved.

[0015] Preferably, a first limiting plane is provided at the inner ring of the fixed disk, the first limiting plane is parallel to the central axis of the fixed disk, a second limiting plane is provided at the side wall of the retaining ring, and the second limiting plane abuts against the first limiting plane.

[0016] Through the above technical solution, the first limiting plane and the second limiting plane abut against each other to limit the relative rotation between the fixed disk and the retaining ring, thereby improving the transmission efficiency between the screw rod and the waste discharging scraper.

[0017] Preferably, a positioning ring groove is coaxially formed at the end of the fixed disk, and a positioning convex ring is coaxially provided at the end of the cutter disk, and the positioning convex ring is clamped in the positioning ring groove.

[0018] Through the above technical solution, the positioning ring groove and the positioning convex ring cooperate with each other to improve the coaxiality between the fixed disk and the cutter disk.

[0019] Preferably, the cutter disk includes a left flap body and a right flap body respectively arranged on both sides of the connecting section, and the left flap body and the right flap body abut against each other.

[0020] Through the above technical solution, the cutter disk is divided into a left flap body and a right flap body, making the disassembly and assembly of the cutter disk more convenient.

[0021] Preferably, a spiral cooling groove is formed on the outer side of the connecting seat, a cooling outer sleeve is sleeved on the outer side of the connecting seat, the cooling outer sleeve covers the notch of the spiral cooling groove, a water inlet and a water outlet are formed on the outer side of the cooling outer sleeve, and the water inlet and the water outlet are respectively communicated with both ends of the spiral cooling groove.

[0022] Through the above technical solution, during use, cooling water is driven to flow through the water inlet, the spiral cooling groove and the water outlet in sequence by tools such as a water pump to cool the plastic melt inside the connecting seat, so that the liquid plastic melt is transformed into a semi-solid state and plays a role in blocking the plastic melt in the wire-free filter. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the embodiment;

[0024] Figure 2 is a partial cross-sectional view of the embodiment;

[0025] Figure 3 is a partial exploded view of the embodiment.

[0026] Reference numerals: 1, connecting seat; 2, impurity discharge hole; 3, impurity discharge screw; 31, impurity discharge section; 32, connecting section; 33, spiral blade; 4, impurity discharge opening; 5, impurity discharge scraper; 51, fixed disk; 52, cutter disk; 521, left valve body; 522, right valve body; 53, threaded part; 6, retaining ring; 7, accommodating groove; 8, first limiting plane; 9, second limiting plane; 10, positioning ring groove; 11, positioning convex ring; 12, spiral cooling groove; 13, cooling outer sleeve; 14, water inlet; 15, water outlet. Detailed implementation manners

[0027] The following further details the specific implementation manners of the present utility model in conjunction with the attached drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0028] A screw waste discharging device, as Figures 1 to 3 shown, includes a connecting seat 1 connected to a wire-free filter. An impurity discharge hole 2 is provided through the middle of the connecting seat 1, and the impurity discharge hole 2 is communicated with the inner cavity of the wire-free filter. An impurity discharge screw 3 is rotatably connected in the impurity discharge hole 2. During use, the impurities scraped off in the wire-free filter box can be discharged through the impurity discharge hole 2 under the action of the impurity discharge screw 3.

[0029] The impurity discharge screw 3 includes an integrally formed impurity discharge section 31 and a connecting section 32. The impurity discharge section 31 is located on the side of the impurity discharge hole 2 close to the wire-free filter, and a spiral blade 33 for transporting impurities is provided on the outer side of the impurity discharge section 31. The connecting section 32 is located on the side of the impurity discharge hole 2 away from the wire-free filter.

[0030] An impurity discharge opening 4 is provided in the side wall of the connecting seat 1. The impurity discharge opening 4 is communicated with the impurity discharge hole 2 and is opposite to the connecting section 32. An impurity discharge scraper 5 is fixedly provided on the outer side of the connecting section 32, and the impurity discharge scraper 5 is opposite to the impurity discharge opening 4.

[0031] A retaining ring 6 protrudes from the outer side of the connecting section 32. The impurity discharge scraper 5 includes a fixed disk 51 sleeved on the outer side of the connecting section 32 and a cutter disk 52. The fixed disk 51 and the cutter disk 52 are respectively arranged on both sides of the retaining ring 6, and the fixed disk 51 and the cutter disk 52 are pressed and fixed to the retaining ring 6 through a threaded part 53. Accommodating grooves 7 are provided in both the fixed disk 51 and the cutter disk 52, and the retaining ring 6 is received in the two accommodating grooves 7. A first limiting plane 8 is provided at the inner circle of the fixed disk 51. The first limiting plane 8 is parallel to the central axis of the fixed disk 51. A second limiting plane 9 is provided on the side wall of the retaining ring 6. The second limiting plane 9 abuts against the first limiting plane 8. A positioning ring groove 10 is coaxially provided at the end of the fixed disk 51, and a positioning convex ring 11 is coaxially provided at the end of the cutter disk 52. The positioning convex ring 11 is clamped in the positioning ring groove 10. The cutter disk 52 includes a left valve body 521 and a right valve body 522 respectively arranged on both sides of the connecting section 32, and the left valve body 521 and the right valve body 522 abut against each other.

[0032] A spiral cooling groove 12 is provided on the outer side of the connecting seat 1. A cooling outer sleeve 13 is sleeved on the outer side of the connecting seat 1. The cooling outer sleeve 13 covers the notch of the spiral cooling groove 12. An inlet 14 and an outlet 15 are provided on the outer side of the cooling outer sleeve 13. The inlet 14 and the outlet 15 are respectively communicated with both ends of the spiral cooling groove 12.

[0033] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A screw waste discharge device, characterized in that: The invention comprises a connecting seat (1) connected to a wire-free filter, wherein a debris removal hole (2) is provided through the middle of the connecting seat (1), wherein a debris removal screw (3) is rotatably connected to the debris removal hole (2), wherein the debris removal screw (3) comprises an integrated debris removal section (31) and a connecting section (32), wherein the debris removal section (31) is located on a side of the debris removal hole (2) close to the wire-free filter, and a spiral blade (33) for transporting impurities is provided on the outer side of the debris removal section (31), and the connecting section (32) is located on a side of the debris removal hole (2) away from the wire-free filter, and a debris removal opening (4) is provided on the side wall of the connecting seat (1), wherein the debris removal opening (4) is connected to the debris removal hole (2), and the debris removal opening (4) is opposite to the connecting section (32), and a debris removal scraper (5) is fixedly provided on the outer side of the connecting section (32), and the debris removal scraper (5) is opposite to the debris removal opening (4).

2. A screw waste discharge device according to claim 1, characterized in that: A retaining ring (6) is protrudingly provided on the outer side of the connecting section (32); the debris removal scraper (5) comprises a fixed disk (51) and a knife disk (52) sleeved on the outer side of the connecting section (32); the fixed disk (51) and the knife disk (52) are respectively arranged on both sides of the retaining ring (6); and the fixed disk (51) and the knife disk (52) are pressed and fixed to the retaining ring (6) by a screw member (53).

3. A screw waste discharge device according to claim 2, characterized in that: The fixed disc (51) and the cutter disc (52) are both provided with accommodating grooves (7), and the retaining ring (6) is received in the two accommodating grooves (7).

4. A screw waste discharge device according to claim 2, characterized in that: A limiting plane 1 (8) is provided at the inner ring of the fixed disk (51), and the limiting plane 1 (8) is parallel to the central axis of the fixed disk (51). A limiting plane 2 (9) is provided at the side wall of the retaining ring (6), and the limiting plane 2 (9) is tightly abutted against the limiting plane 1 (8).

5. A screw waste discharge device according to claim 2, characterized in that: A positioning ring groove (10) is coaxially provided at the end of the fixed disk (51), and a positioning convex ring (11) is coaxially provided at the end of the cutter disk (52), and the positioning convex ring (11) is clamped in the positioning ring groove (10).

6. A screw waste discharge device according to claim 2, characterized in that: The blade disc (52) comprises a left petal body (521) and a right petal body (522) respectively arranged on both sides of the connecting section (32), and the left petal body (521) and the right petal body (522) are pressed against each other.

7. The screw waste discharge device according to claim 1 is characterized in that: A spiral cooling groove (12) is provided on the outside of the connecting seat (1), a cooling outer sleeve (13) is provided on the outside of the connecting seat (1), the cooling outer sleeve (13) shields the groove opening of the spiral cooling groove (12), a water inlet (14) and a water outlet (15) are provided on the outside of the cooling outer sleeve (13), the water inlet (14) and the water outlet (15) are respectively connected to two ends of the spiral cooling groove (12).

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