Cooling device of double-screw extruder

Abstract

The utility model relates to the technical field of double-screw extruders, and provides a cooling device of a double-screw extruder, which comprises a main body box and a double-screw extruder body transversely arranged in the main body box in a penetrating manner, the pump body is fixedly mounted on one side surface of the main body box; the connecting copper pipe is fixedly connected to the input end of the pump body and is in a U shape, and one end of the connecting copper pipe is connected with the main body box. Cooling liquid in a main box is conveyed into a water spraying pipe to be sprayed out through a pump body, so that water spraying cooling is conducted on a double-screw extruder body, meanwhile, a first movable arm is driven by a movable cleaning mechanism to rotate, the first movable arm drives a kidney-shaped hole plate to swing in a reciprocating mode, and a second movable arm is driven by the kidney-shaped hole plate to swing in a reciprocating mode synchronously; and therefore, the effect of cooling by adjusting the water spraying position through swinging is achieved, and the cooling effect and efficiency of the double-screw extruder body are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of twin-screw extruder technology, and specifically to a cooling device for a twin-screw extruder. Background Technology

[0002] Twin-screw extruders were developed based on single-screw extruders. Due to their excellent feeding performance, mixing and plasticizing performance, venting performance, and extrusion stability, they have been widely used in the molding and processing of extruded products.

[0003] A known authorized patent with application number CN202322895782.7 discloses a cooling device for a twin-screw extruder. Its background technology addresses the problem that "cooling the surface of the copper barrel body is achieved by flowing water through a water pipe, with the temperature first passing through the copper barrel body and then being conducted to the water pipe, where the flowing water absorbs the temperature. This cooling process is relatively long, thus affecting the cooling speed." To address this problem, the proposed solution includes a cooling chamber: a twin-screw extruder body is horizontally installed through the side wall of the cooling chamber, and a direct cooling component is installed on the cooling chamber; a cleaning component is installed on the outside of the twin-screw extruder body; a filter plate is horizontally installed inside the cooling chamber, and an anti-clogging component is installed on the filter plate; the cooling device for the twin-screw extruder includes a U-shaped copper pipe, equipment, and a water spray head.

[0004] However, the following problems were found in the implementation of the above technical solution: Although the provided technical solution achieves the effect of cooling the twin-screw extruder body directly with cold water, it is not convenient to adjust the water spray by swinging the water spray head during use. The spray position and direction of the water spray head are relatively fixed, which easily leads to limited spray range and uneven spray, resulting in a small cooling coverage area, thus reducing the cooling effect and efficiency of the twin-screw extruder. Utility Model Content

[0005] This invention proposes a cooling device for a twin-screw extruder, which solves the problem in related technologies where it is inconvenient to adjust the water spray by swinging the spray head.

[0006] The technical solution of this utility model is as follows: A cooling device for a twin-screw extruder, comprising: a main body box and a twin-screw extruder body horizontally installed therethrough;

[0007] The pump body is fixedly installed on one side of the main body box;

[0008] A U-shaped connecting copper pipe is fixedly connected to the pump body input end, and one end of the connecting copper pipe is connected to the main body box;

[0009] A water spraying pipe is rotatably connected to the main box and located above the twin-screw extruder body, a plurality of water spraying heads are fixedly installed on the surface of the water spraying pipe, and the output end of the pump body is movably connected with the water spraying pipe through a pipeline;

[0010] A waist hole plate is rotatably connected to one side surface of the main box;

[0011] A movable arm one is arranged on one side of the main box and slides in cooperation with the waist hole plate through a pin column one;

[0012] A movable arm two is fixedly connected to one end of the water spraying pipe and slides in cooperation with the waist hole plate through a pin column two;

[0013] A moving cleaning mechanism is arranged in the main box and used for driving the movable arm one to rotate and cleaning the twin-screw extruder body.

[0014] Preferably, the moving cleaning mechanism comprises a reciprocating screw rod rotatably connected between the inner walls of the main box and located between the twin-screw extruder body and the water spraying pipe, a guide rod fixedly installed between the inner walls of the main box and located below the twin-screw extruder body, a cleaning brush ring threadedly connected to the surface of the reciprocating screw rod and sliding with the guide rod, and a driving member arranged on the main box.

[0015] The driving member comprises a motor fixedly installed on one side surface of the main box, the output end of the motor movably penetrates through the main box and is connected with the reciprocating screw rod, one end of the reciprocating screw rod movably penetrates through the main box, the movable arm one is fixedly connected to one end of the reciprocating screw rod, and the cleaning brush ring is sleeved on the surface of the twin-screw extruder body.

[0016] Preferably, a filter plate is fixedly installed in the main box and located below the guide rod, the filter plate is arranged in an inclined manner, and a blockage preventing mechanism for cleaning the filter plate is arranged in the main box.

[0017] Preferably, the blockage preventing mechanism comprises two installation blocks symmetrically fixedly installed on the surface of the cleaning brush ring, a limiting rod slidably connected on the installation blocks, a scraper fixedly connected to the bottom end of the limiting rod, and a spring sleeved on the surface of the limiting rod, and the two ends of the spring are respectively connected with the top end of the limiting rod and the installation blocks.

[0018] Preferably, a residue discharging slot corresponding to the filter plate is arranged on one side surface of the main box, and a sealing mechanism is arranged in the residue discharging slot.

[0019] Preferably, the sealing mechanism comprises a sliding groove arranged in the bottom wall of the residue discharging slot, a sealing plate slidably connected in the sliding groove, and an electric push rod fixedly installed on one side surface of the main box, and the output end of the electric push rod is connected with the sealing plate.

[0020] The working principle and beneficial effects of the utility model are as follows:

[0021] In use, the cooling liquid in the main box is delivered to the water spraying pipe by the pump body to spray water to cool the twin-screw extruder body, and the movable cleaning mechanism drives the movable arm I to rotate, so that the movable arm I drives the waist hole plate to reciprocate, and the waist hole plate drives the movable arm II to reciprocate synchronously, so that the water spraying head on the surface of the water spraying pipe reciprocates to spray water, thereby achieving the effect of adjusting the water spraying position to cool, avoiding the small cooling coverage caused by the fixed water spraying position and direction, ensuring the range and uniformity of water spraying cooling, and effectively improving the cooling effect and efficiency of the twin-screw extruder body. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0023] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0024] Figure 2 It is the sectional view three-dimensional structure schematic diagram of the main box of the utility model;

[0025] Figure 3 It is the local three-dimensional structure schematic diagram of the water spraying pipe of the utility model;

[0026] Figure 4 It is the local three-dimensional structure schematic diagram of the movable cleaning mechanism of the utility model;

[0027] In the drawing: 1, main box; 2, twin-screw extruder body; 3, pump body; 4, connecting copper pipe; 5, water spraying pipe; 6, waist hole plate; 7, movable arm I; 8, movable arm II; 9, reciprocating screw; 10, guide rod; 11, motor; 12, cleaning brush ring; 13, filter plate; 14, mounting block; 15, limiting rod; 16, scraper; 17, spring; 18, slag discharge notch; 19, sealing plate; 20, electric push rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0029] Embodiment one

[0030] Please refer to Figure 1 - Figure 4The utility model provides a kind of cooling device of double screw extruder, it include: main body box 1 and the double screw extruder body 2 of transverse through installation in it are installed in its inside, wherein, the top of main body box 1 is equipped with injection tube, to add cooling liquid to the inside of main body box 1;

[0031] Pump body 3 is fixedly installed in the side surface of main body box 1;

[0032] The connecting copper pipe 4 of U shape is fixedly connected to the input end of pump body 3, one end of connecting copper pipe 4 is connected with main body box 1, wherein, connecting copper pipe 4 is located inside deep well, to cool cooling liquid after heat absorption of double screw extruder body 2 cooling;

[0033] Water jet pipe 5 is rotatably connected in main body box 1 and located above double screw extruder body 2, a plurality of water jet heads are fixedly installed on the surface of water jet pipe 5, the output end of pump body 3 is movably connected with one end of water jet pipe 5 through pipeline and rotary joint;

[0034] Waist hole plate 6 is rotatably connected in the side surface of main body box 1;

[0035] Movable arm one 7 is arranged in the side of main body box 1 and slides through the cooperation of pin column one and waist hole plate 6;

[0036] Movable arm two 8 is fixedly connected to one end of water jet pipe 5 and slides through the cooperation of pin column two and waist hole plate 6;

[0037] And mobile cleaning mechanism is arranged in main body box 1 for driving movable arm one 7 to rotate and cleaning double screw extruder body 2.

[0038] The technical scheme provided by the embodiment is as follows: during use, when cooling double screw extruder body 2, pump body 3 is used to pump cooling liquid at the bottom of main body box 1 into connecting copper pipe 4, so that connecting copper pipe 4 cools the cooling liquid in cooperation with deep well, then the cooling liquid is delivered into water jet pipe 5 through pipeline, and the surface of double screw extruder body 2 is cooled by water jet head, at the same time, the surface of double screw extruder body 2 is cleaned by mobile cleaning mechanism, to prevent impurities from affecting the cooling effect, and movable arm one 7 is driven to rotate by mobile cleaning mechanism, so that movable arm one 7 drives waist hole plate 6 to reciprocate around the connecting axis by pin column one, and in the process of reciprocation of waist hole plate 6, movable arm two 8 is driven to reciprocate synchronously by pin column two, so that water jet pipe 5 is driven to reciprocate by movable arm two 8, so that the water jet head on the surface of water jet pipe 5 can reciprocate, thus achieving the effect of adjusting the position of water jet for cooling, avoiding the situation that the cooling coverage is small due to fixed water jet position and direction, ensuring the range and uniformity of water jet cooling, and effectively improving the cooling effect and efficiency of double screw extruder body 2.

[0039] Further, the mobile cleaning mechanism comprises a reciprocating screw rod 9 rotatably connected between the inner walls of the main box 1, between the double-screw extruder body 2 and the water spraying pipe 5, a guide rod 10 fixedly installed between the inner walls of the main box 1, below the double-screw extruder body 2, a cleaning brush ring 12 threadedly connected to the surface of the reciprocating screw rod 9 and slidingly connected with the guide rod 10, and a driving member arranged on the main box 1.

[0040] The driving member comprises a motor 11 fixedly installed on one side surface of the main box 1, an output end of the motor 11 movably penetrating through the main box 1 and being connected with the reciprocating screw rod 9, one end of the reciprocating screw rod 9 movably penetrating through the main box 1, the movable arm 7 being fixedly connected to one end of the reciprocating screw rod 9, and the cleaning brush ring 12 being sleeved on the surface of the double-screw extruder body 2.

[0041] Specifically, when cooling the double-screw extruder body 2, the water spraying pipe 5 sprays water on the double-screw extruder body 2, the motor 11 drives the reciprocating screw rod 9 to rotate and drives the movable arm 7 to rotate, so that the water spraying pipe 5 reciprocally swings, and the cleaning brush ring 12 reciprocally moves along the surface of the guide rod 10, so that the cleaning brush ring 12 cleans the surface of the double-screw extruder body 2, preventing scale accumulation from affecting the cooling efficiency.

[0042] Further, a filter plate 13 is fixedly installed inside the main box 1 and below the guide rod 10, the filter plate 13 is obliquely arranged, and the main box 1 is provided with an anti-blocking mechanism for cleaning the filter plate 13.

[0043] The anti-blocking mechanism comprises two installation blocks 14 symmetrically fixedly installed on the surface of the cleaning brush ring 12, a limiting rod 15 penetratingly and slidingly connected on the installation blocks 14, a scraper 16 fixedly connected to the bottom end of the limiting rod 15, and a spring 17 sleeved on the surface of the limiting rod 15, two ends of the spring 17 being respectively connected with the top end of the limiting rod 15 and the installation block 14.

[0044] Specifically, when spraying water to cool the double-screw extruder body 2, the filter plate 13 can filter the sprayed cooling liquid, and when the cleaning brush ring 12 moves, the installation blocks 14 synchronously move, so that the scraper 16 moves on the surface of the filter plate 13, so as to clean the filter plate 13, preventing impurities and scale from blocking the filter plate 13 and affecting the filtering effect, and under the action of the spring 17 and the limiting rod 15, the scraper 16 is always in contact with the filter plate 13, so as to ensure the cleaning effect of the scraper 16.

[0045] Embodiment Two

[0046] Based on the embodiment one, in this embodiment, a residue discharging slot 18 corresponding to the filter plate 13 is arranged on one side surface of the main box 1, and the residue discharging slot 18 is provided with a sealing mechanism.

[0047] The sealing mechanism comprises a chute opened in the bottom wall of the residue discharging notch 18, a sealing plate 19 slidably connected in the chute, and an electric push rod 20 fixedly installed on one side of the main box 1, the output end of the electric push rod 20 being connected with the sealing plate 19, wherein the sealing plate 19 is L-shaped and is arranged in sealing connection with the chute and the residue discharging notch 18 according to requirements.

[0048] The technical scheme provided by the embodiment is that when the dirt and impurities on the filter plate 13 are cleaned, the sealing plate 19 is driven by the electric push rod 20 to move downward to slide in the chute, so that the residue discharging notch 18 is opened to clean and discharge the impurities from the residue discharging notch 18, thereby avoiding that the impurities are accumulated to affect the filtering effect of the filter plate 13, and vice versa, the sealing plate 19 is driven by the electric push rod 20 to move upward to close the residue discharging notch 18, thereby facilitating personnel maintenance and cleaning.

[0049] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cooling device for a twin-screw extruder, characterized by, Include: The main box (1) and the double screw extruder body (2) installed in it; The pump body (3) is fixedly installed on one side of the main box (1); The connecting copper pipe (4) is fixedly connected to the input end of the pump body (3) and is U-shaped, one end of the connecting copper pipe (4) is connected with the main box (1); The water injection pipe (5) is rotatably connected in the main box (1) and above the double screw extruder body (2), a plurality of water injection heads are fixedly installed on the surface of the water injection pipe (5), the output end of the pump body (3) is movably connected with the water injection pipe (5) through a pipeline; The waist hole plate (6) is rotatably connected on one side of the main box (1); The movable arm one (7) is arranged on one side of the main box (1) and slides with the waist hole plate (6) through the pin column one; The movable arm two (8) is fixedly connected to one end of the water injection pipe (5) and slides with the waist hole plate (6) through the pin column two; And the moving cleaning mechanism arranged in the main box (1) is used for driving the movable arm one (7) to rotate and cleaning the double screw extruder body (2).

2. A cooling device for a twin-screw extruder according to claim 1, characterized in that The moving cleaning mechanism includes a reciprocating screw (9) rotatably connected between the inner walls of the main box (1) and located between the double screw extruder body (2) and the water injection pipe (5), a guide rod (10) fixedly installed between the inner walls of the main box (1) and located below the double screw extruder body (2), a cleaning brush ring (12) threadedly connected to the surface of the reciprocating screw (9) and sliding with the guide rod (10), and a driving member arranged on the main box (1).

3. A cooling device for a twin-screw extruder according to claim 2, characterized in that The driving member includes a motor (11) fixedly installed on one side of the main box (1), the output end of the motor (11) is movably connected with the reciprocating screw (9) through the main box (1), one end of the reciprocating screw (9) is movably connected with the main box (1), the movable arm one (7) is fixedly connected to one end of the reciprocating screw (9), and the cleaning brush ring (12) is sleeved on the surface of the double screw extruder body (2).

4. A cooling device for a twin-screw extruder according to claim 2, characterized in that The filter plate (13) is fixedly installed inside the main box (1) and below the guide rod (10), the filter plate (13) is arranged obliquely, and the main box (1) is provided with an anti-blocking mechanism for cleaning the filter plate (13).

5. A cooling device for a twin-screw extruder according to claim 4, characterized in that The anti-blocking mechanism includes two mounting blocks (14) fixedly installed symmetrically on the surface of the cleaning brush ring (12), a limiting rod (15) slidably connected on the mounting block (14), a scraper (16) fixedly connected to the bottom end of the limiting rod (15), and a spring (17) sleeved on the surface of the limiting rod (15), the two ends of the spring (17) are respectively connected with the top end of the limiting rod (15) and the mounting block (14).

6. A cooling device for a twin-screw extruder according to claim 4, characterized in that A residue discharge slot (18) corresponding to the filter plate (13) is formed on one side of the main box (1), and a sealing mechanism is arranged in the residue discharge slot (18).

7. A cooling device for a twin-screw extruder according to claim 6, characterized in that The sealing mechanism includes a sliding groove formed in the bottom wall of the residue discharge slot (18), a sealing plate (19) slidably connected in the sliding groove, and an electric push rod (20) fixedly installed on one side of the main box (1), the output end of the electric push rod (20) is connected with the sealing plate (19).

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