Water end supporting piece for melt mixing system
By designing the double cooling and sealing structure of the water-end support, the poor cooling effect and leakage of the conveying screw are solved, and more efficient cooling and sealing effects are achieved to ensure stable operation of the equipment.
Patent Information
- Application Number
- CN202422590732.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the existing melt-kneading system, the support and cooling effects of the conveying screw are poor, and there is a risk of leakage.
A water-end support member is designed, including support, end cover, tapered roller bearing, outer cooling sleeve, spiral sealing sleeve, inner tapered sleeve and rotary sleeve. The conveying screw is cooled through double cooling, and a spiral groove and multiple disc spring structures are used to improve sealing and support effect.
Improves the cooling effect of the conveying screw, prevents leakage, and ensures the operation stability and sealing of the equipment.
Smart Images
Figure CN223266029U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of melt mixing systems, in particular to a water end support component used in melt mixing systems. Background Art
[0002] The mixing, extrusion and granulation unit can mix, plasticize, extrude, pelletize, separate and dry materials, and ultimately process them into regular granular products. The melt mixing system is a key component of the mixing, extrusion and granulation unit, mainly consisting of a barrel and support components. The conveying screw passes through the mixing chamber of the barrel, and the end of the conveying screw is installed in the support component. The material is heated in the mixing chamber and melted and plasticized by the conveying screw. The water end support component not only supports the end of the conveying screw but also requires cooling the conveying screw with cooling water. Therefore, high requirements are placed on the support and cooling effects of the conveying screw, as well as leakage prevention. Utility Model Content
[0003] The purpose of the utility model is to provide a water end support member for a melt mixing system, which can improve the supporting effect and cooling effect on the conveying screw and effectively prevent leakage.
[0004] The technical solution adopted by the utility model to solve the above technical problems is: a water end support member for a melt mixing system, comprising a support and an end cover, through holes for inserting a conveying screw are respectively provided on both sides of the support member, a pair of tapered roller bearings are installed in one of the through holes, the tapered roller bearing sleeve is arranged on an inner tapered sleeve, an outer cooling sleeve is passed through the other through hole, a spiral sealing sleeve is passed through the inner hole of the outer cooling sleeve, a vent hole and a lubricating oil hole are opened on the end cover, a vent cap is installed at the orifice of the vent hole, oil seal skeletons are respectively installed at both ends of the inner tapered sleeve along the axial direction, and the spiral sealing sleeve is provided with a plurality of screws. A spiral groove is provided on the outer wall, and the rotation direction of the spiral groove is opposite to the rotation direction of the conveying screw, so as to limit the flow of materials between the spiral groove and the inner wall of the outer cooling jacket. A cooling flow channel surrounding the spiral sealing sleeve is provided in the outer cooling jacket, and the outer cooling jacket is connected to an inlet and outlet pipe for supplying cooling water; the small end of the inner conical surface of the inner tapered sleeve faces the outside of the water end support, and a rotary sleeve is installed at the end of the conveying screw extending into the inner tapered sleeve. A rotary joint is installed on the rotary sleeve, which passes through the rotary sleeve and is connected to the inner pipe located in the center hole of the conveying screw, so as to facilitate the delivery of cooling water to the center hole of the conveying screw;
[0005] A plurality of guide holes are evenly spaced along the circumferential direction on the end surface of the inner tapered sleeve facing the rotary sleeve, a guide block is provided in the guide hole, a screw is inserted into the guide block, the tail end of the screw passes through the guide block and is screwed into the threaded hole at the bottom surface of the guide hole, a disc spring is sleeved on the screw, and the two ends of the disc spring along the axial direction of the conveying screw are respectively pressed against the bottom surface of the guide hole and the end surface of one side of the guide block, and the end surface of the rotary sleeve is pressed against the end surface on the other side of the guide block, so that the rotary sleeve can squeeze multiple disc springs at the same time through multiple guide blocks, so that the inner conical surface of the inner tapered sleeve and the outer conical surface of the conveying screw can fit tightly.
[0006] Preferably, a radial pin is further provided through the side wall of the guide block, and the end of the radial pin is pressed against the side wall of the screw head.
[0007] According to the above technical solution, the beneficial effects of the utility model are:
[0008] The utility model has a cooling channel surrounding the spiral sealing sleeve in the outer cooling sleeve, an inner tube in the conveying screw, and a rotary joint installed at the end of the conveying screw. Therefore, cooling water can be transported to the center hole of the conveying screw, and the outer side of the conveying screw can be cooled through the cooling channel of the outer cooling sleeve, thereby improving the cooling effect of the conveying screw through double cooling.
[0009] The utility model is provided with oil seal skeletons at both ends of the inner tapered shaft sleeve along the axial direction to prevent the leakage of lubricating oil, and a spiral groove opposite to the rotation direction of the conveying screw is provided on the outer wall of the spiral sealing shaft sleeve, which can limit the flow of material between the spiral groove and the inner wall of the outer cooling sleeve, and prevent the material from leaking from the gap between the conveying screw and the support member. The double seal improves the sealing effect and effectively prevents leakage.
[0010] The utility model provides multiple disc springs between the inner tapered sleeve and the rotary sleeve. The rotary sleeve can squeeze the multiple disc springs simultaneously through multiple guide blocks, thereby pressing the inner conical surface of the inner tapered sleeve onto the outer conical surface of the conveying screw, ensuring a tight connection between the inner tapered sleeve and the conveying screw. The disc springs can produce a damping effect under working conditions of radial force fluctuations, so that the equipment runs smoothly and the support effect on the conveying screw is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a cross-sectional schematic diagram of the utility model;
[0012] Figure 2 for Figure 1 Enlarged view of the dotted box area.
[0013] Markings in the figure: 1. Support, 2. End cover, 3. Breather cap, 4. Tapered roller bearing, 5. Lubricating oil hole, 6. Inner tapered sleeve, 7. Oil seal frame, 8. Rotary joint, 9. Rotary sleeve, 10. Inner tube, 11. Spiral sealing sleeve, 12. Outer cooling jacket, 13. Inlet and outlet pipes, 14. Screw, 15. Disc spring, 16. Guide block, 17. Radial pin. DETAILED DESCRIPTION
[0014] With reference to the accompanying drawings, the specific implementation is as follows:
[0015] like Figure 1 As shown, a water-end support member for a melt mixing system comprises a support 1 and an end cap 2. Through holes for inserting a conveying screw are provided on either side of the support member. A pair of tapered roller bearings 4 are mounted in one of the through holes, which are sleeved on an inner tapered sleeve 6. An outer cooling sleeve 12 is inserted into the other through hole, and a spiral sealing sleeve 11 is inserted into the inner bore of the outer cooling sleeve 12. The end cap 2 is provided with an air vent and a lubricating oil hole 5, through which lubricating oil can be delivered to the tapered roller bearings 4. A vent cap 3 is mounted at the opening of the air vent. Oil seal frames 7 are mounted at each axial end of the inner tapered sleeve 6 to prevent lubricating oil leakage. The outer wall of the spiral sealing sleeve 11 is provided with a spiral groove, the rotation direction of which is opposite to that of the conveying screw, thereby restricting the flow of material between the spiral groove and the inner wall of the outer cooling sleeve 12, thereby preventing material leakage through the gap between the conveying screw and the support member.
[0016] A cooling channel surrounding the spiral sealing sleeve 11 is provided in the outer cooling sleeve 12. The outer cooling sleeve 12 is connected to an inlet and outlet pipe 13 for supplying cooling water. The small end of the inner cone of the inner tapered sleeve 6 faces the outside of the water end support. The end of the conveying screw extending into the inner tapered sleeve 6 is installed with a rotary sleeve 9, and a rotary joint 8 is installed on the rotary sleeve 9. The rotary joint 8 passes through the rotary sleeve 9 and is connected to the inner tube 10 located in the center hole of the conveying screw to facilitate the delivery of cooling water to the center hole of the conveying screw. Therefore, cooling water can be delivered to the center hole of the conveying screw, and the outside of the conveying screw can also be cooled through the cooling channel of the outer cooling sleeve 12. The cooling effect of the conveying screw is improved through double cooling.
[0017] like Figure 2As shown, a plurality of guide holes are evenly spaced along the circumferential direction on the end surface of the inner tapered sleeve 6 facing the rotary sleeve 9, and a guide block 16 is provided in the guide hole. A screw 14 is inserted on the guide block 16. The tail end of the screw 14 passes through the guide block 16 and is screwed into the threaded hole at the bottom of the guide hole. The side wall of the guide block 16 is also penetrated by a radial pin 17. The end of the radial pin 17 is pressed on the side wall of the head of the screw 14. A disc spring 15 is provided on the screw 14. The disc spring 15 is divided into two ends along the axial direction of the conveying screw. The top is arranged on the bottom surface of the guide hole and the end surface on one side of the guide block 16, and the end surface of the rotary sleeve 9 is pressed on the end surface on the other side of the guide block 16, so that the rotary sleeve 9 can squeeze multiple disc springs 15 at the same time through multiple guide blocks 16, thereby pressing the inner conical surface of the inner conical sleeve 6 onto the outer conical surface of the conveying screw, ensuring the close connection between the inner conical sleeve 6 and the conveying screw. The disc spring 15 can produce a damping effect under the working condition of radial force fluctuation, so that the equipment runs smoothly and improves the support effect on the conveying screw.
Claims
1. A water end support for a melt mixing system, characterized by: The invention comprises a support (1) and an end cover (2), wherein both sides of the support are provided with through holes for inserting a conveying screw, wherein a pair of tapered roller bearings (4) are installed in one of the through holes, and the tapered roller bearings (4) are sleeved on an inner tapered sleeve (6), an outer cooling sleeve (12) is inserted into the other through hole, and a spiral sealing sleeve (11) is inserted into the inner hole of the outer cooling sleeve (12), and an air vent and a lubricating oil hole (5) are provided on the end cover (2), and an air vent cap (3) is installed at the orifice of the air vent, and oil seal skeletons (7) are respectively installed at both ends of the inner tapered sleeve (6) along the axial direction, and a spiral groove is provided on the outer wall of the spiral sealing sleeve (11), and the direction of rotation of the spiral groove is the same as that of the conveying screw. The direction of rotation is opposite to that of the outer cooling sleeve (12), so as to limit the flow of materials between the spiral groove and the inner wall of the outer cooling sleeve (12). A cooling flow channel surrounding the spiral sealing sleeve (11) is provided in the outer cooling sleeve (12), and the outer cooling sleeve (12) is connected to an inlet and outlet pipe (13) for supplying cooling water. The small end of the inner conical surface of the inner conical sleeve (6) faces the outside of the water end support. The end of the conveying screw extending into the inner conical sleeve (6) is installed with a rotary sleeve (9), and a rotary joint (8) is installed on the rotary sleeve (9). The rotary joint (8) passes through the rotary sleeve (9) and is connected to the inner pipe (10) located in the center hole of the conveying screw, so as to facilitate the delivery of cooling water to the center hole of the conveying screw. A plurality of guide holes are uniformly spaced along the circumferential direction on the end surface of the inner tapered sleeve (6) facing the rotary sleeve (9), and a guide block (16) is provided in the guide hole. A screw (14) is inserted into the guide block (16), and the tail end of the screw (14) passes through the guide block (16) and is screwed into the threaded hole at the bottom surface of the guide hole. A disc spring (15) is sleeved on the screw (14), and the two ends of the disc spring (15) along the axial direction of the conveying screw are respectively mounted on the bottom surface of the guide hole and the end surface of one side of the guide block (16), and the end surface of the rotary sleeve (9) is pressed against the end surface of the other side of the guide block (16), so that the rotary sleeve (9) can squeeze the multiple disc springs (15) at the same time through the multiple guide blocks (16), so that the inner conical surface of the inner tapered sleeve (6) and the outer conical surface of the conveying screw are closely matched.
2. The water end support member for a melt mixing system according to claim 1, characterized in that: The side wall of the guide block (16) is also penetrated by a radial pin (17), and the end of the radial pin (17) is pressed against the side wall of the head of the screw (14).