Liquid filling structure of screw extruder

Abstract

The utility model discloses a liquid filling structure of a screw extruder, which belongs to the technical field of screw extruders and comprises a main pipe, the main pipe is mounted on a shell of the screw extruder, one end of the main pipe penetrates through the shell of the screw extruder and extends into the screw extruder, and the other end of the main pipe is connected with an external booster pump; the water injection assembly is installed on the inner wall of the outer shell of the screw extruder, a water outlet of the water injection assembly is in a long strip shape, and the water discharging direction of the water injection assembly is the same as the rotating direction of a screw in the screw extruder. Therefore, the temperature of the water injection position is prevented from being obviously reduced, and the product quality is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a liquid filling structure for a screw extruder. Background Art

[0002] In order to avoid the generation of a large amount of VOC gas due to degradation of materials or oxidation of peroxides during the production process of a twin-screw extruder during operation, thereby affecting the quality of the product, a Chinese patent document with publication number CN220576567U discloses a liquid filling and feeding device for a screw extruder, which injects water into the interior of the twin-screw extruder through a liquid inlet pipe. The water enters the interior of the screw extruder and is heated to form water vapor, and the formed water vapor is used to carry away the VOC gas. However, the water injection point is a single water injection point. When injecting water, a large amount of water is concentratedly injected through only one point, and the water directly enters the interior of the screw extruder. Since the water temperature is low and the water is injected in a concentrated manner, the temperature in the area will be significantly reduced, which is likely to affect the quality of the product. In order to solve the above problems, the present invention provides a liquid filling structure for a screw extruder. Utility Model Content

[0003] In response to the above-mentioned technical deficiencies, the purpose of the present utility model is to provide a liquid filling structure for a screw extruder, in which water is discharged in the form of a water film through a strip-shaped water outlet along the direction of rotation of the screw, allowing the water to be discharged more dispersedly, thereby avoiding a significant drop in temperature at the water injection position, and thus not affecting the quality of the product.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a liquid filling structure for a screw extruder, comprising:

[0005] A main pipe, wherein the main pipe is installed on the outer shell of the screw extruder, and one end of the main pipe passes through the outer shell of the screw extruder and extends into the interior of the screw extruder, and the other end is connected to an external booster pump;

[0006] The water injection assembly is installed on the inner wall of the screw extruder shell. The water outlet of the water injection assembly is long and the direction in which the water is discharged by the water injection assembly is the same as the direction in which the screw in the screw extruder rotates.

[0007] Preferably, the water injection assembly comprises:

[0008] The nozzle is a long strip frame, the long side direction of the nozzle is consistent with the axial direction of the screw in the screw extruder, and the outer side of the nozzle is in contact with the inner wall of the screw extruder housing, the water outlet is provided on the nozzle, and the direction of the water outlet is the same as the rotation direction of the screw in the screw extruder;

[0009] The spring piece has one side fixedly connected to one side wall of the water outlet, and the other side is fitted with the other side wall of the water outlet under the action of its own elastic force.

[0010] Preferably, the inner side surface of the nozzle is hook-shaped, the corners of the hook are smoothly transitioned, and the short side wall of the hook faces the rotation direction of the screw.

[0011] Preferably, the angle of the spring piece is the same as the angle of the hook-shaped long side wall.

[0012] Preferably, a filter is installed inside the upper opening of the main pipe, and a telescopic tube is provided on the upper side of the filter, and the telescopic tube is threadedly connected to the main pipe.

[0013] Preferably, the filter screen is in the shape of a hemispherical shape with a convex center.

[0014] Preferably, a mounting ring is fixedly connected to the lower end of the filter screen, the outer diameter of the mounting ring is adapted to the inner diameter of the main pipe, and a fixing ring adapted to the mounting ring is fixedly connected to the inner ring surface of the main pipe.

[0015] Preferably, a mounting plate is fixedly sleeved on the main pipe, the mounting plate is tightly fitted with the outer side of the screw extruder housing, and the mounting plate is connected to the housing of the screw extruder by bolts.

[0016] The beneficial effects of the present invention are:

[0017] The utility model realizes that after the liquid enters the nozzle, the shrapnel is squeezed out and the liquid enters the interior of the screw extruder in the form of a water film. Moreover, the direction of the water outlet is the same as the rotation direction of the screw in the screw extruder, so that the water can be better dispersed after entering the interior of the screw extruder, thereby avoiding concentrated water injection, resulting in a decrease in regional temperature, which not only affects product quality but also leads to low water evaporation efficiency.

[0018] The utility model realizes that the filter can filter impurities in the water through the arrangement of the filter screen and the telescopic tube, and the telescopic tube is threadedly connected to the main pipe, so the filter screen can be removed and cleaned regularly, and the shape of the filter screen is an upward convex hemispherical shape, which can guide the filtered impurities so that the impurities will not clog the filter screen and affect the flow of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural schematic diagram of a liquid filling structure for a screw extruder provided in an embodiment of the utility model.

[0021] Figure 2 This is an exploded view of the present invention.

[0022] Figure 3 This is a schematic diagram of the installation of the present utility model.

[0023] Figure 4 For this utility model Figure 3 A partial cross-sectional view of .

[0024] Description of reference numerals:

[0025] 1. Main pipe, 2. Nozzle, 3. Shrapnel, 4. Filter, 5. Telescopic pipe, 6. Mounting ring, 7. Retaining ring, 8. Mounting plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The utility model provides a liquid filling structure for a screw extruder, such as Figures 1 to 4 shown.

[0028] Example 1:

[0029] A liquid filling structure for a screw extruder includes a main pipe 1, the outer side of which is fixedly sleeved with a mounting plate 8, which fits on the outer surface of the screw extruder and is connected to the outer casing of the screw extruder by bolts. One end of the main pipe 1 passes through the outer casing of the screw extruder, extends to the interior of the screw extruder and is fixedly connected to a water injection component, and the other end of the main pipe 1 is connected to an external booster pump. The external booster pump can inject water into the interior of the water injection component through the main pipe 1, and then spray it into the interior of the screw extruder through the water injection component.

[0030] The water injection component is installed on the inner wall of the screw extruder casing. The water outlet of the water injection component is strip-shaped. The water passing through the water outlet of the water injection component will form a water film and discharge into the interior of the screw extruder, which can be better dispersed inside the screw extruder. The direction in which the water is discharged by the water injection component is the same as the rotation direction of the screw in the screw extruder. After the water is discharged, it can move in the direction of the material and can be further dispersed inside the screw extruder. Since the water is dispersed, the volume of water per unit area is smaller when the amount of water discharged is the same, so the heat required to heat and evaporate the water per unit area is also less, which means that the temperature loss of the material inside the screw extruder will also be smaller, thereby avoiding a significant drop in temperature at the water injection position and affecting the quality of the product.

[0031] Example 2:

[0032] Based on the first embodiment, the specific configuration of the water injection component is as follows:

[0033] The water injection assembly includes a nozzle 2, which is a long strip frame, and the long side direction of the nozzle 2 is consistent with the axial direction of the screw in the screw extruder. The outer side surface of the nozzle 2 is arc-shaped and fits together with the inner wall of the screw extruder shell. The inner side surface is hook-shaped, and the corners of the hook are smoothly transitioned. The short side wall of the hook faces the direction of rotation of the screw. The nozzle 2 adopts this shape to reduce the impact on material movement.

[0034] The side of the nozzle 2 away from the center of the screw extruder is the outer side. The water outlet is opened on the nozzle 2, and the direction of the water outlet is the same as the rotation direction of the screw in the screw extruder, so that the water can better follow the movement of the material after entering the interior of the screw extruder, and can be better dispersed inside the screw extruder, avoiding concentrated injection of water.

[0035] The inside of the water outlet is provided with a spring piece 3, one side of the spring piece 3 is fixedly connected to one side wall of the water outlet, and the other side is fitted with the other side wall of the water outlet under its own elastic force (such as Figure 4 As shown, the right side of the spring 3 is in contact with the side wall of the water outlet (at this time, the direction of rotation of the screw in the screw extruder is clockwise), and the angle of the spring 3 is the same as the angle of the long side wall of the hook shape of the nozzle 2. This design makes the lower side wall of the nozzle 2 smoother, further reducing the impact on material movement.

[0036] Example 3:

[0037] On the basis of Example 2, in order to prevent impurities in the water from entering the interior of the screw extruder and affecting the quality of the product, a filter screen 4 is installed inside the upper end opening of the main pipe 1. The filter screen 4 is in the shape of a hemispherical shape with a convex middle portion, which can guide the filtered impurities and prevent impurities from clogging the filter screen 4 and affecting the flow of water. A mounting ring 6 is fixedly connected to the lower end of the filter screen 4. The outer diameter of the mounting ring 6 is adapted to the inner diameter of the main pipe 1. A fixing ring 7 adapted to the mounting ring 6 is fixedly connected to the inner ring surface of the main pipe 1. The mounting ring 6 is inserted into the interior of the main pipe 1 and contacts the fixing ring 7, so that the filter screen 4 can be installed inside the main pipe 1.

[0038] In order to facilitate cleaning by the staff, a telescopic tube 5 is provided on the upper side of the filter 4. The telescopic tube 5 is threadedly connected to the main pipe 1. The telescopic tube 5 can be a bellows. When it is necessary to clean impurities on the filter 4, the telescopic tube 5 is separated from the main pipe 1, and then the filter 4 can be cleaned.

[0039] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A liquid filling structure for a screw extruder, characterized in that: include: A main pipe (1), wherein the main pipe (1) is mounted on the housing of the screw extruder, and one end of the main pipe (1) passes through the housing of the screw extruder and extends into the interior of the screw extruder, and the other end is connected to an external booster pump; The water injection assembly is installed on the inner wall of the screw extruder shell. The water outlet of the water injection assembly is long and the direction in which the water is discharged by the water injection assembly is the same as the direction in which the screw in the screw extruder rotates.

2. A liquid filling structure for a screw extruder according to claim 1, characterized in that: The water injection assembly comprises: A nozzle (2), wherein the nozzle (2) is a long strip frame, the long side direction of the nozzle (2) is consistent with the axial direction of the screw in the screw extruder, and the outer side surface of the nozzle (2) is in contact with the inner wall of the screw extruder housing, and the water outlet is provided on the nozzle (2), and the direction of the water outlet is consistent with the rotation direction of the screw in the screw extruder; A spring piece (3), one side of the spring piece (3) is fixedly connected to one side wall of the water outlet, and the other side of the spring piece (3) is fitted to the other side wall of the water outlet under the action of its own elastic force.

3. A liquid filling structure for a screw extruder according to claim 2, characterized in that: The inner side surface of the nozzle (2) is hook-shaped, the corners of the hook are smoothly transitioned, and the short side wall of the hook faces the rotation direction of the screw.

4. A screw extruder liquid filling structure according to claim 3, characterized in that: The angle of the spring (3) is the same as the angle of the hook-shaped long side wall.

5. A liquid filling structure for a screw extruder according to claim 1, characterized in that: A filter screen (4) is installed inside the upper opening of the main pipe (1), and a telescopic tube (5) is provided on the upper side of the filter screen (4), and the telescopic tube (5) is threadedly connected to the main pipe (1).

6. A liquid filling structure for a screw extruder according to claim 5, characterized in that: The filter screen (4) is in the shape of a hemispherical shape with an upward convex portion in the middle.

7. A liquid filling structure for a screw extruder according to claim 6, characterized in that: The lower end of the filter screen (4) is fixedly connected to a mounting ring (6), the outer diameter of the mounting ring (6) is adapted to the inner diameter of the main pipe (1), and a fixing ring (7) adapted to the mounting ring (6) is fixedly connected to the inner ring surface of the main pipe (1).

8. The liquid filling structure for a screw extruder according to claim 1, characterized in that: A mounting plate (8) is fixedly sleeved on the main pipe (1), and the mounting plate (8) is tightly fitted with the outer side surface of the screw extruder housing, and the mounting plate (8) is connected to the screw extruder housing via bolts.

Images