Feeding nozzle and rotary mixer with same

Abstract

The utility model discloses a feeding nozzle and a rotary mixer with the same, the feeding nozzle comprises a tubular nozzle valve body, and a check valve sealing screw is arranged in the nozzle valve body; the end, close to the output end of the nozzle valve body, of the check valve sealing screw is provided with a gradually-enlarged conical screw head, and a conical inner side wall matched with the screw head in shape is arranged in the nozzle valve body. The other end of the check valve sealing screw is sleeved with a check valve cross nut, and the check valve cross nut is connected with or abuts against the inner wall of the nozzle valve body through a check spring. According to the scheme, the feeding nozzle is provided with an automatic non-return structure so as to prevent input materials from flowing back, a multi-stage sealing structure is preferably adopted to guarantee the sealing effect, the split type output head is adopted, overall machining, assembling and the like are facilitated, and regular disassembly and cleaning are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of mixers, and in particular relates to a feeding nozzle and a rotary mixer with the same. Background Art

[0002] At present, in the production equipment of some high-end resin films (such as polyimide films), a rotary mixer is needed to evenly mix the high-viscosity main material (such as polyamic acid resin) and auxiliary materials (such as imidization reagent) in a short time, and then output them from the discharge end of the rotary mixer. Conventional rotary mixers do not pay enough attention to the feeding structure, and it is difficult to meet the current process requirements of high-end resin films. In order to ensure the stability and controllability of the feeding, the feeding structure needs to be optimized and improved, such as ensuring sealing and avoiding material backflow. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a feeding nozzle and a rotary mixer having the same, so as to solve the problem of poor stability and controllability of the feeding structure of the existing rotary mixer, achieve reliable non-return and sealing effects, and thus better meet the needs of high-end and complex processes.

[0004] According to the technical scheme of the utility model, the utility model provides a feeding nozzle, including a tubular nozzle valve body, a check valve sealing screw is arranged in the nozzle valve body; the check valve sealing screw is located at one end close to the output end of the nozzle valve body and has a gradually enlarged, conical screw head, and the inside of the nozzle valve body has a conical inner wall whose shape matches the screw head; the other end of the check valve sealing screw is sleeved with a check valve cross nut, and the check valve cross nut is connected or conflicts with the inner wall of the nozzle valve body through a check spring.

[0005] Furthermore, it also includes a sealing connection sleeve, which is sealingly connected to the mixing cylinder of the rotary mixer, and the sealing connection sleeve is sealingly sleeved and connected outside the nozzle valve body.

[0006] Furthermore, an output head is sleeved on the outer side of the output end of the nozzle valve body, and the output head has a funnel-shaped inner wall that gradually shrinks toward the output direction.

[0007] Furthermore, an output head is sleeved on the outer side of the output end of the nozzle valve body, a top screw hole is opened on the sealing connection sleeve and a top screw is inserted and connected, and the inner side end of the top screw conflicts with the output head.

[0008] Furthermore, at least one first sealing ring is sleeved on the outer side of the output head, and the first sealing ring is clamped between the sealing connection sleeve and the output head in a resistive manner; the first sealing ring is located on one side of the output direction of the top screw.

[0009] Furthermore, at least one second sealing ring is sleeved on the outer side of the output end of the nozzle valve body, and the second sealing ring is clamped between the nozzle valve body and the output head in an abutting manner.

[0010] According to the technical solution of the utility model, the utility model also provides a rotary mixer, which has a mixing cylinder and a rotating shaft, and also has an auxiliary material nozzle, which is the feed nozzle described in the utility model; one end of the mixing cylinder is the discharge end, and a main material feed disk is sealed and connected to the end of the mixing cylinder away from the discharge end; the main material feed disk has a main material feed opening that runs from the outside to the inside, the main material feed disk is sleeved outside the rotating shaft and a main material feed channel is formed between the main material feed disk and the rotating shaft; one or more auxiliary material nozzles are provided on the mixing cylinder, and the auxiliary material nozzles sealably penetrate the side wall of the mixing cylinder.

[0011] Furthermore, a mechanical sealing device is sealedly connected to one end of the main material inlet tray away from the discharge end, and the mechanical sealing device is sleeved outside the rotating shaft.

[0012] Furthermore, there are multiple auxiliary material nozzles, and the auxiliary material nozzles are installed on mounting holes on the side of the mixing drum, and there are multiple mounting holes; the mounting holes are located at multiple different positions in the axial direction and / or circumferential direction of the mixing drum.

[0013] Furthermore, at least one auxiliary material nozzle is located at one end of the mixing barrel close to the main material inlet tray.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0015] 1. The feed nozzle of the utility model is provided with an automatic check structure to prevent the input material from flowing back, and preferably adopts a multi-stage sealing structure to ensure the sealing effect, and adopts a split output head to facilitate overall processing, assembly, etc., and is easy to disassemble and clean regularly.

[0016] 2. The rotary mixer of the utility model is provided with a feed nozzle as an auxiliary material inlet, and two or more materials are input separately, which helps to improve the accuracy of the material input amount and make the materials mix evenly. It is preferably provided with a plurality of installation holes to select the position and number of the feed nozzles according to different process requirements, and the feed nozzle is preferably arranged on the side close to the main material feed tray to ensure sufficient mixing of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional structural diagram of a feed nozzle according to an embodiment of the utility model.

[0018] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA plane.

[0019] Figure 3The utility model is a schematic diagram of the overall cross-sectional structure of a rotary mixer according to an embodiment of the present invention.

[0020] Figure 4a and Figure 4b It is a schematic structural diagram of two embodiments in which the auxiliary material nozzle is arranged at different positions.

[0021] Description of reference numerals in the accompanying drawings:

[0022] 1. Mixing cylinder; 11. Discharging end; 2. Rotating shaft; 3. Main material feeding tray; 31. Main material feeding port; 32. Main material feeding channel; 4. Mechanical sealing device; 5. Mounting plate; 51. Fixed bracket; 52. Limit bearing; 6. Motor; 61. Reducer; 7. Synchronous pulley assembly; 71. Active pulley; 72. Driven pulley; 73. Synchronous belt; 8. Auxiliary material nozzle; 81. Nozzle valve body; 82. Sealing connecting sleeve; 83. Check valve sealing screw; 84. Screw head; 85. Conical inner wall; 86. Check valve cross nut; 87. Check spring; 88. Output head; 89. Top screw; 801. First sealing ring; 802. Second sealing ring. DETAILED DESCRIPTION

[0023] The utility model provides a feeding nozzle and a rotary mixer having the same, which solves the problem of poor stability and controllability of the feeding structure of the existing rotary mixer, achieves reliable non-return and sealing effects, and thus better meets the needs of high-end and complex processes.

[0024] See also Figures 1 to 3 A feeding nozzle according to an embodiment of the utility model comprises a tubular nozzle valve body 81, in which a check valve sealing screw 83 is arranged. The check valve sealing screw 83 has a gradually enlarged, conical screw head 84 at one end located near the output end of the nozzle valve body 81, and the nozzle valve body 81 has a conical inner side wall 85 whose shape matches the screw head 84, and the screw head 84 and the conical inner side wall 85 can be sealed. The other end of the check valve sealing screw 83 is threadedly sleeved with a check valve cross nut 86, and the check valve cross nut 86 is connected to or in conflict with the inner wall of the nozzle valve body 81 through a check spring 87.

[0025] More specifically, for example, a hole is provided on the cross nut 86 of the check valve to insert and fix the check spring 87, the inner cavity structure of the nozzle valve body 81 matches its internal components, the inner wall of the nozzle valve body 81 is formed with a step, the check spring 87 is a compression spring, and the check spring 87 abuts against the step; in a natural state where no external force is applied (or a state where the external force is small), under the action of the elastic restoring force of the check spring 87, the check valve sealing screw 83 is moved to Figure 1The left side of the nozzle valve body 81 is tightened, and the screw head 84 is sealed against the conical inner wall 85, so that the material cannot enter the input end on the left from the output end on the right. When the material is pressed in from the left, the material passes through the gap between the inner cavity structure of the nozzle valve body 81 and its internal components (for example, including the four corners of the check valve cross nut 86) and enters the screw head 84. The pressure of the material pushes the screw head 84 to the right, so that the material can be output from the output end on the right.

[0026] Preferably, a sealing connection sleeve 82 is also included, which is sealingly connected to the mixing drum 1 of the rotary mixer. The sealing connection sleeve 82 is sealingly sleeved and connected to the outside of the nozzle valve body 81. This nesting method enhances the sealing performance and the flexibility of installation and disassembly.

[0027] Preferably, an output head 88 is sleeved on the outer side of the output end of the nozzle valve body 81, and the output head 88 has a funnel-shaped inner wall that gradually shrinks toward the output direction. The funnel-shaped inner wall is connected to the conical inner side wall 85 to form a spindle-shaped space. The funnel-shaped inner wall is used to guide and converge the materials dispersed by the screw head 84 again so as to be transported to the mixing barrel 1.

[0028] More preferably, for Figure 1 The scheme shown has the above-mentioned sealing connection sleeve 82 and output head 88 at the same time. The sealing connection sleeve 82 is provided with a top screw hole and a top screw 89 is inserted and connected. The inner side end of the top screw 89 contacts the output head 88, so that the installation is fixed as a whole. Further, a sealing ring groove is provided on the outer side of the output head 88 and at least one first sealing ring 801 (one in the illustrated embodiment) is sleeved. The first sealing ring 801 is clamped between the sealing connection sleeve 82 and the output head 88 in a contacting manner. The first sealing ring 801 is located on the output direction side of the top screw 89; if there is material backflow from the gap between the sealing connection sleeve 82 and the output head 88, it will be blocked by the first sealing ring 801 and cannot continue to enter the rear end structure. Furthermore, a sealing ring groove is provided on the outer side of the output end of the nozzle valve body 81 and at least one second sealing ring 802 (two in the illustrated embodiment) is sleeved thereon, and the second sealing ring 802 is clamped between the nozzle valve body 81 and the output head 88 in a resisting manner; thereby ensuring the seal between the nozzle valve body 81 and the output head 88, so that the material can only be output through the funnel-shaped inner wall under pressure. At the same time, the position of the top screw 89 corresponds to or is close to the second sealing ring 802, so that the nozzle valve body 81 and the output head 88 can also be pressed together by one or more top screws 89. In addition, the three-part split structure in this scheme, which is sealed and connected, is convenient for the processing of structures such as the tapered inner side wall, the assembly of the overall structure, and the regular disassembly and cleaning.

[0029] See also Figure 3A rotary mixer according to one embodiment of the utility model is similar to the prior art and comprises a mixing drum 1 and a rotating shaft 2. The principle of rotary mixing is to stir the material in the mixing drum 1 by driving the rotating shaft 2 to rotate. The relevant components can use the prior art or other feasible technical solutions and are not described in detail herein. The part used for stirring on the outer side of the rotating shaft 2 is omitted in the figure. It also comprises an auxiliary material nozzle 8 for inputting auxiliary material, which is the feed nozzle of the utility model. It also comprises a main material feed tray 3 for inputting main material.

[0030] More specifically, one end of the mixing drum 1 is the discharge end 11, and a main material feed tray 3 is sealed and connected to the end of the mixing drum 1 away from the discharge end 11. The main material feed tray 3 is, for example, disc-shaped and annular, and has a main material feed port 31 that runs from outside to inside. The main material feed tray 3 is sleeved outside the rotating shaft 2 and a main material feed channel 32 is formed between the main material feed tray 3 and the rotating shaft 2; so that the material can enter the mixing drum 1 from the outside through the main material feed port 31 and the main material feed channel 32. One or more auxiliary material nozzles 8 are provided on the mixing drum 1, and the auxiliary material nozzles 8 are sealed and penetrate the side wall of the mixing drum 1, so that the material can be input into the mixing drum 1 through the auxiliary material nozzles 8. In this solution, the main material feeding tray 3 is adopted, which is equivalent to integrating the feeding port on the connecting component, thereby improving the structural sealing; and the auxiliary material nozzle 8 is used to feed the materials separately. Based on the design of the overall structure, this solution can realize the preliminary stirring of the main material with high viscosity, for example, and then contact the auxiliary material, so that the mixing of more than two materials is more uniform.

[0031] Furthermore, a mechanical seal device 4 is sealed and connected to one end of the main material feeding tray 3 away from the discharge end, and the mechanical seal device 4 is sleeved outside the rotating shaft 2. The sealing connection method is, for example, a flange connection, and a sealing ring is sandwiched between adjacent structures. The mechanical seal device 4 can seal the upper end of the main material feeding channel 32, and maintain a sealed state during the rotation of the rotating shaft 2, so that the material cannot enter the upper area; the mechanical seal device 4 is used to seal and separate the part of the rotating mixer that contacts the material for stirring from the mechanical transmission part that provides the driving force.

[0032] Preferably, there are multiple auxiliary material nozzles 8, and the auxiliary material nozzles 8 are installed in the installation holes on the side of the mixing drum 1, and there are multiple installation holes; the installation holes are located at multiple different positions in the axial and / or circumferential direction of the mixing drum 1, so that the installation method can be flexibly selected according to needs. It is understandable that for unused installation holes, they can be sealed in a similar way to a plug or in other ways such as a sealing plate. Preferably, at least one auxiliary material nozzle 8 is located at one end of the mixing drum 1 close to the main material inlet tray 3, so that the auxiliary material and the main material can be fully mixed. For example Figure 4aIn the embodiment shown, two or more auxiliary material nozzles are located near one end of the main material feeding tray 3, for example, distributed circumferentially, and the feeding amounts of the multiple auxiliary material nozzles are substantially the same, so as to facilitate more uniform mixing. Figure 4b In the embodiment shown, two or more auxiliary material nozzles are arranged in a front-to-back order in the axial direction, so that the materials can be added in sequence with a certain time difference relative to the main material, for example, a part / one auxiliary material is mixed and reacted first, and then another part / another auxiliary material is added after the mixing and reaction are carried out to a certain extent, and it can also be selected as Figure 4a and Figure 4b Combinations of the arrangements shown can be used to achieve more precise control, more complex processes, etc.

[0033] In a more specific embodiment, the driving component of the rotary mixer includes a motor 6, preferably a variable frequency motor. The motor 6 is connected to the rotating shaft 2 through a synchronous pulley assembly 7, and the motor 6 and the mixing drum 1 are located on the same side of the mounting plate 5, more specifically, the motor 6 and the mixing drum 1 are arranged in parallel; the synchronous pulley assembly 7 is located on the other side of the mounting plate 5. The synchronous pulley assembly 7 includes a driving pulley 71 and a driven pulley 72, and a synchronous belt 73 is connected to the driving pulley 71 and the driven pulley 72. The driving pulley 71 is connected to the output end of the motor 6, and the driven pulley 72 is coaxially arranged with the rotating shaft 2, relatively fixed, and rotates together. Further, a reducer 61 is fixedly installed and connected on the mounting plate 5, and the motor 6 is connected to the driving pulley 71 through the reducer 61. The transmission ratio of the synchronous pulley assembly 7 is, for example, 1:1. The mounting plate 5 is used to be connected and fixed to the frame of the overall equipment on the production line, so as to fix the rotary mixer as a whole to the desired position. The main material feeding tray 3 (or the mixing cylinder 1 or the mechanical sealing device 4) is fixedly connected with the mounting plate 5 by a fixed bracket 51, so that the overall external structure is connected and fixed as a whole. A limit bearing 52 is provided on the mounting plate 5 and / or the fixed bracket 51. The limit bearing 52 is sleeved outside the rotating shaft 2. The limit bearings 52 are preferably more than two and spaced at a certain distance, so that the position of the central axis of the rotating shaft 2 is fixed by the fixed position limit bearings 52. This solution optimizes the overall transmission structure of the rotary mixer, and improves the traditional direct connection between the motor and the rotating shaft to a transmission connection through a synchronous pulley assembly, which fundamentally avoids the risk of materials entering the motor in the mixer, and helps to make the rotation of the rotating shaft and the stirring component more stable, and provides a buffering effect to avoid the situation where, for example, a fault occurs in the stirring component and the structure is damaged under the large driving force of the motor. At the same time, it can optimize the overall layout and help improve space utilization.

[0034] In summary, the feed nozzle of the utility model is provided with an automatic check structure to prevent the input material from flowing back, and preferably adopts a multi-stage sealing structure to ensure the sealing effect, and adopts a split output head to facilitate overall processing, assembly, etc., and is convenient for regular disassembly and cleaning. The rotary mixer of the utility model is provided with a feed nozzle as an auxiliary material inlet, and two or more materials are input separately, which helps to improve the accuracy of the material input amount and make the materials mixed evenly, and preferably has multiple installation holes to select the position and number of the feed nozzle according to different process requirements, and preferably sets the feed nozzle on the side close to the main material feed tray to ensure that the materials are fully mixed.

Claims

1. A feeding nozzle, characterized in that: It comprises a tubular nozzle valve body, in which a check valve sealing screw is arranged; the check valve sealing screw is located at one end close to the output end of the nozzle valve body and has a gradually enlarged, conical screw head, and the inside of the nozzle valve body has a conical inner wall whose shape matches the screw head; the other end of the check valve sealing screw is sleeved with a check valve cross nut, and the check valve cross nut is connected to or contacts the inner wall of the nozzle valve body through a check spring.

2. The feed nozzle according to claim 1, characterized in that: The invention also comprises a sealing connection sleeve, which is sealingly connected to the mixing cylinder of the rotary mixer and is sealingly sleeved and connected outside the nozzle valve body.

3. The feed nozzle according to claim 1, characterized in that: An output head is sleeved on the outer side of the output end of the nozzle valve body. The output head has a funnel-shaped inner wall which gradually decreases toward the output direction.

4. The feed nozzle according to claim 2, characterized in that: An output head is sleeved on the outer side of the output end of the nozzle valve body, a top screw hole is opened on the sealing connection sleeve and a top screw is inserted and connected, and the inner side end of the top screw conflicts with the output head.

5. The feed nozzle according to claim 4, characterized in that: At least one first sealing ring is sleeved on the outer side of the output head, and the first sealing ring is clamped between the sealing connection sleeve and the output head in a resisting manner; the first sealing ring is located on one side of the output direction of the top screw.

6. The feed nozzle according to claim 5, characterized in that: At least one second sealing ring is sleeved on the outer side of the output end of the nozzle valve body, and the second sealing ring is clamped between the nozzle valve body and the output head in a resisting manner.

7. A rotary mixer, comprising a mixing drum and a rotating shaft, characterized in that: It also has an auxiliary material nozzle, which is the feed nozzle as described in any one of claims 1 to 5; one end of the mixing drum is the discharge end, and a main material feed tray is sealed and connected to the end of the mixing drum away from the discharge end; the main material feed tray has a main material feed opening that runs from the outside to the inside, the main material feed tray is sleeved outside the rotating shaft and a main material feed channel is formed between the main material feed tray and the rotating shaft; one or more auxiliary material nozzles are provided on the mixing drum, and the auxiliary material nozzles sealably penetrate the side wall of the mixing drum.

8. The rotary mixer according to claim 7, characterized in that A mechanical sealing device is sealed and connected to one end of the main material feeding tray away from the discharging end, and the mechanical sealing device is sleeved outside the rotating shaft.

9. The rotary mixer according to claim 7, characterized in that There are multiple auxiliary material nozzles, and the auxiliary material nozzles are installed on the mounting holes on the side of the mixing drum. There are multiple mounting holes; the mounting holes are located at multiple different positions in the axial direction and / or circumferential direction of the mixing drum.

10. The rotary mixer according to claim 7, characterized in that At least one auxiliary material nozzle is located at one end of the mixing barrel close to the main material feeding tray.

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