Rubber mixing device

Abstract

The utility model is suitable for the technical field of rubber mixing equipment, and discloses a rubber mixing device which comprises two racks arranged in parallel, a material pressing roller of which the shaft ends are respectively and rotationally connected with the two racks, and a rotary joint which is positioned on the outer side of one rack and is connected with the shaft end of the material pressing roller, the number of the material pressing rollers and the number of the rotating joints are both two, and the two rotating joints are arranged side by side. The device further comprises a drainage frame and a heat-conducting oil recycling barrel. The drainage frame is provided with an inclined drainage face, and the drainage frame is located below the two rotary joints at the same time. And the heat conduction oil recycling barrel is arranged below the lower end of the material guiding frame. According to the utility model, the drainage frame with the inclined drainage surface is arranged below the rotary joint, and the conduction oil recycling barrel is arranged below the lower end of the drainage frame, so that when oil leakage occurs at the rotary joint, the conduction oil can be recycled; and the heat-conducting oil leaking out of the rotary joint drips downwards onto the material guiding frame and is guided into the heat-conducting oil recycling barrel through the flow guiding frame to be collected, so that the waste of the heat-conducting oil can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber mixing equipment, in particular to a rubber mixing device. Background Art

[0002] The PVC film is a kind of film material made of PVC (polyvinyl chloride) material, which has excellent chemical resistance, weather resistance and plasticity. According to different uses and requirements, the PVC film can have different thicknesses, colors, textures and surface characteristics, so that it can be used in the fields of architectural decoration, food packaging, medical supplies, advertising signs, etc.

[0003] When producing the PVC film, it is necessary to make the PVC resin material reach better fluidity and plasticity through a rubber mixing device, so as to facilitate subsequent calendering. The existing rubber mixing device usually consists of two oppositely rotating rubber pressing rollers (such as the publication number CN220995050U). The rubber pressing rollers extrude the material at different linear speeds, and hot heat-conducting oil is circulated inside the rubber pressing rollers, so as to increase the temperature of the PVC resin material.

[0004] In order to send the heat-conducting oil into the inside of the rubber pressing roller, a rotary joint is arranged at the shaft end of the rubber pressing roller and connected with a heat-conducting oil delivery pipeline. However, during actual production and removal of the heat-conducting oil delivery pipeline, oil leakage will occur at the rotary joint, resulting in waste of heat-conducting oil.

[0005] It can be seen that the existing technology still needs to be improved. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a embossing device for PVC coils, aiming to recover the oil leakage at the rotary joint and solve the problem of waste of heat-conducting oil.

[0007] To achieve the above purpose, the solution provided by the utility model is:

[0008] A rubber mixing device, comprising two parallel racks, a material pressing roller whose shaft ends are respectively rotatably connected to the two racks, and a rotary joint located outside one of the racks and connected to the shaft end of the material pressing roller; the number of the material pressing rollers and the rotary joints is 2, and the two rotary joints are arranged side by side; further comprising:

[0009] A drainage frame, the drainage frame has an inclined drainage surface, and the drainage frame is simultaneously located below the two rotary joints;

[0010] A heat-conducting oil recovery barrel, the heat-conducting oil recovery barrel is arranged below the lower end of the material guiding frame.

[0011] Furthermore, a detachable filter screen assembly is arranged inside the heat-conducting oil recovery barrel, and the filter screen assembly is used for receiving the heat-conducting oil discharged from the material guiding frame.

[0012] Further, the filter assembly includes a frame body and a filter screen located inside the frame body; a support side plate is provided on the inner wall of the heat-conducting oil recovery barrel, and the support side plate supports the frame body.

[0013] Further, the drainage frame includes:

[0014] A drainage plate, which is inclinedly arranged below the rotary joint;

[0015] Two liquid baffle plates, which are respectively arranged on both sides of the drainage plate along the length direction of the drainage plate.

[0016] Further, the drainage frame further includes:

[0017] A U-shaped support frame, which is fixedly connected to the bottom of the drainage plate, and the U-shaped support frame has a horizontal part parallel to the horizontal plane.

[0018] Further, a lifting rope connected to the liquid baffle plates is arranged between the two liquid baffle plates.

[0019] Further, a perforation for the lifting rope to pass through is formed on the liquid baffle plate; limiting parts with an area larger than the area of the perforation are arranged at both ends of the lifting rope, and the limiting parts are located outside the liquid baffle plate.

[0020] Further, the inside of the pressure roller has a cavity for containing heat-conducting oil; both an inlet and an outlet are provided on the rotary joint, and a heat-conducting oil inlet pipe is connected inside the rotary joint; the heat-conducting oil inlet pipe extends into the cavity, and the heat-conducting oil inlet pipe is connected to the inlet.

[0021] Further, the rubber mixing device further includes a heat-conducting oil delivery pipe and a return oil pipe; the heat-conducting oil delivery pipe is connected with two oil delivery branch pipes, and the return oil pipe is connected with two return oil branch pipes;

[0022] Wherein, the two oil delivery branch pipes are respectively connected to the inlets of the two rotary joints, and the two return oil branch pipes are respectively connected to the outlets of the two rotary joints; heat insulation layers are coated on the outer walls of the heat-conducting oil delivery pipe, the return oil pipe, the oil delivery branch pipes and the return oil branch pipes.

[0023] Beneficial effects:

[0024] The utility model provides a rubber mixing device. By arranging a drainage frame with an inclined drainage surface below the rotary joint and placing a heat-conducting oil recovery barrel below the lower end of the drainage frame, when oil leakage occurs at the rotary joint, the heat-conducting oil leaking outside the rotary joint drips downward onto the drainage frame and is drained into the heat-conducting oil recovery barrel through the drainage frame for collection, thereby reducing the waste of heat-conducting oil.

[0025] Since the drainage rack can receive the leaked oil at multiple rotary joints simultaneously and drain the heat-conducting oil into the heat-conducting oil recovery barrel below the lower end of the material guiding rack, when recovering the heat-conducting oil, it is not necessary to set up heat-conducting oil recovery barrels below both rotary joints, so there is no need to aggregate the heat-conducting oil in multiple heat-conducting oil recovery barrels, and the collection of the heat-conducting oil is more convenient. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 is the structural schematic diagram of the rubber mixing device provided by the present invention Figure 1 .

[0028] Figure 2 is Figure 1 the enlarged view of part A in

[0029] Figure 3 the structural exploded view of the heat-conducting oil recovery barrel.

[0030] Figure 4 is the structural schematic diagram of the drainage rack.

[0031] Figure 5 is Figure 4 the enlarged view of part B in

[0032] Figure 6 is the connection schematic diagram of the pressure roller and the rotary joint.

[0033] Explanation of the Reference Numerals in the Drawings:

[0034] 1 - Frame;

[0035] 2 - Pressure roller; 21 - Cavity;

[0036] 3 - Reducer; 4 - Rotary joint;

[0037] 5 - Drainage rack; 51 - Drainage plate; 52 - Liquid baffle; 521 - Perforation; 53 - U-shaped support frame;

[0038] 6 - Heat-conducting oil recovery barrel;

[0039] 7 - Filter screen assembly; 71 - Frame body; 72 - Filter screen;

[0040] 8 - Support side plate; 9 - Lifting rope; 10 - Limiting part; 11 - Heat transfer oil inlet pipe; 12 - Heat transfer oil delivery pipe; 121 - Oil delivery branch pipe; 13 - Return oil pipe; 131 - Return oil branch pipe. Detailed implementation manner

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indication also changes accordingly.

[0043] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be a central element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be a central element at the same time.

[0044] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0045] Please refer to Figure 1 and Figure 2As shown, the utility model provides a rubber refining device, which includes a frame 1, a nip roller 2, a rotary joint 4, a drainage frame 5 and a heat transfer oil recovery barrel 6. Among them, two frames 1 are arranged in parallel. There are two nip rollers 2, which are installed at the same horizontal height, and the shaft ends of the nip rollers 2 are respectively rotatably connected to the two frames 1. A gear reduction box 3 is arranged on one side of the rubber refining device, and the gear reduction box 3 is connected to a driving motor. At the same time, the gear reduction box 3 is connected to the two nip rollers 2 through two transmission shafts, so that when the driving mechanism is working, the two nip rollers 2 are rotated in opposite directions, so that the PVC resin material can be squeezed between the high-temperature nip rollers 2, and the PVC resin material achieves better fluidity and plasticity.

[0046] The number of rotary joints 4 and nip rollers 2 is the same, and two rotary joints 4 are arranged side by side so as to be connected to the shaft end on the same side of the nip roller 2, so that the heat transfer oil in the workshop heat transfer oil circulation system can circulate in and out of the inside of the nip roller 2 through the rotary joints 4. The drainage rack 5 has an inclined drainage surface, and the drainage rack 5 is located under the two rotary joints 4 at the same time; the heat transfer oil recovery barrel 6 is arranged below the lower end of the drainage rack.

[0047] When oil leakage occurs at the rotary joint 4, the heat transfer oil leaking out of the rotary joint 4 drips downward onto the guide rack; and the guide rack 5 has an inclined drainage surface, so that the heat transfer oil dripping onto the guide rack can flow toward the direction of the heat transfer oil recovery barrel 6, and finally fall into the heat transfer oil recovery barrel 6 for collection, thereby reducing the waste of heat transfer oil.

[0048] Since the drain rack 5 can simultaneously receive the oil leakage at multiple rotary joints 4 and drain the heat transfer oil to the heat transfer oil recovery barrel 6 below the lower end of the drain rack, there is no need to set a heat transfer oil recovery barrel 6 under the two rotary joints 4 when recovering the heat transfer oil, so there is no need to collect the heat transfer oil in multiple heat transfer oil recovery barrels 6 together, which makes the collection of heat transfer oil more convenient.

[0049] like Figure 3 As shown, in a preferred embodiment of the utility model, a filter assembly 7 is arranged in the heat transfer oil recovery barrel 6. The filter assembly 7 is used to receive the heat transfer oil discharged from the feed rack and remove impurities (such as metal impurities in the pipeline) carried in the heat transfer oil, so that the heat transfer oil can be used directly after recovery.

[0050] The filter assembly 7 is detachably connected to the heat transfer oil recovery barrel 6 to facilitate replacement or cleaning of the filter assembly 7 .

[0051] like Figure 3As shown, in a preferred embodiment of the present utility model, the filter assembly 7 includes a frame body 71 and a filter net 72 located inside the frame body 71; a supporting side plate 8 is provided on the inner wall of the heat-conducting oil recovery barrel 6, and the supporting side plate 8 supports the frame body 71. The shape of the frame body 71 is not limited in this embodiment. It can be annular or other shapes. However, in any case, at least a part of the frame body 71 should be in contact with the supporting side plate 8 so that the filter assembly 7 can be supported inside the heat-conducting oil recovery barrel 6. The mesh number of the filter net 72 can be selected according to actual filtration requirements, but it is necessary to ensure that the filter net 72 can filter out most of the solid particle impurities in the heat-conducting oil.

[0052] As Figure 4 shown, in a preferred embodiment of the present utility model, the drainage frame 5 includes a drainage plate 51 and two liquid-blocking plates 52. The drainage plate 51 is inclined and arranged below the rotary joint 4; the two liquid-blocking plates 52 are respectively arranged on both sides of the drainage plate 51 along the length direction of the drainage plate 51. Thus, when the heat-conducting oil flows downward along the drainage plate 51, it can prevent the heat-conducting oil from overflowing to the ground along the long side direction of the drainage plate 51, reducing the waste of heat-conducting oil.

[0053] As Figure 1 and Figure 4 shown, in a preferred embodiment of the present utility model, the drainage frame 5 further includes a U-shaped support frame 53. The U-shaped support frame 53 is fixedly connected to the bottom of the drainage plate 51, and the U-shaped support frame 53 has a horizontal part parallel to the horizontal plane. Through this horizontal part, the drainage frame 5 can be stably placed below the rotary joint 4.

[0054] As Figure 4 shown, in a preferred embodiment of the present utility model, a lifting rope 9 connected to the liquid-blocking plates 52 is arranged between the two liquid-blocking plates 52. The number of the lifting ropes 9 is not limited to 1, which can facilitate the production personnel to pick up and place the drainage frame 5.

[0055] As Figure 4 and Figure 5 shown, in a preferred embodiment of the present utility model, a perforation 521 for the lifting rope 9 to pass through is provided on the liquid-blocking plate 52; limiting parts 10 with an area larger than the area of the perforation 521 are arranged at both ends of the lifting rope 9, and the limiting parts 10 are located outside the liquid-blocking plate 52, which can prevent the lifting rope 9 from loosening between the liquid-blocking plates 52.

[0056] As Figure 6As shown, in a preferred embodiment of the present utility model, the pressing roller 2 has a cavity 21 inside for accommodating heat-conducting oil; the rotary joint 4 is provided with an inlet and an outlet at the same time, and a heat-conducting oil inlet pipe 11 is connected inside the rotary joint 4; the heat-conducting oil inlet pipe 11 extends into the cavity 21, and the heat-conducting oil inlet pipe 11 is connected to the inlet. When the pressing roller 2 rotates, the rotary joint 4 remains stationary. Thus, when the hot heat-conducting oil enters the inlet, the hot heat-conducting oil can be sent into the pressing roller 2 through the heat-conducting oil inlet pipe 11.

[0057] Since both the inlet and the outlet for oil return are provided on the same rotary joint 4, it is not necessary to set rotary joints 4 at both shaft ends of the pressing roller 2, thereby reducing the occurrence of oil leakage. Correspondingly, it is also not necessary to set a drainage frame 5 and a heat-conducting oil recovery barrel 6 outside the two racks 1 at the same time, which can reduce unnecessary labor operations for production personnel.

[0058] As Figure 1 and Figure 2 shown, in a preferred embodiment of the present utility model, the rubber mixing device further includes a heat-conducting oil delivery pipe 12 and a return oil pipe 13. The heat-conducting oil delivery pipe 12 and the return oil pipe 13 are part of the heat-conducting oil circulation system in the workshop. The heat-conducting oil circulation system usually further includes heat-conducting oil heating equipment such as a mold temperature controller and a heat-conducting oil boiler for heating the heat-conducting oil, and also includes a heat-conducting oil delivery pump.

[0059] Specifically, the heat-conducting oil delivery pipe 12 is connected with two oil delivery branch pipes 121, and the two oil delivery branch pipes 121 are respectively connected to the inlets of the two rotary joints 4. The return oil pipe 13 is connected with two return oil branch pipes 131, and the two return oil branch pipes are respectively connected to the outlets of the two rotary joints 4. The lengths of the oil delivery branch pipes 121 and the return oil branch pipes 131 are both shorter than the lengths of the heat-conducting oil delivery pipe 12 and the return oil pipe 13 (the heat-conducting oil delivery pipe 12 and the return oil pipe 13 are not fully shown in the attached drawings). It can be seen that the setting of the oil delivery branch pipes 121 and the return oil branch pipes 131 simplifies the pipeline layout, enabling the circulation of the heat-conducting oil through a single heat-conducting oil delivery pipe 12 and a single return oil pipe 13.

[0060] In order to reduce the heat loss of the heat-conducting oil during transportation, the outer walls of the heat-conducting oil delivery pipe 12, the return oil pipe 13, the oil delivery branch pipes 121, and the return oil branch pipes 131 are all coated with a heat insulation layer. The heat insulation layer can be a silicate heat insulation layer, an asbestos heat insulation layer, etc.

[0061] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural transformations made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A rubber mixing device, comprising two parallel frames, a nip roller whose shaft ends are rotatably connected to the two frames, and a rotary joint located outside one of the frames and connected to the shaft end of the nip roller; the number of the nip roller and the rotary joint are both 2, and the two rotary joints are arranged side by side; characterized in that: Also includes: A drainage rack, wherein the drainage rack has an inclined drainage surface and is located under the two rotary joints at the same time; A heat transfer oil recovery barrel is arranged below the lower end of the material introduction rack.

2. The rubber refining device according to claim 1, characterized in that: A detachable filter assembly is arranged in the heat transfer oil recovery barrel, and the filter assembly is used to receive the heat transfer oil discharged from the feed rack.

3. The rubber refining device according to claim 2, characterized in that: The filter assembly comprises a frame and a filter located in the frame; the inner wall of the heat transfer oil recovery barrel is provided with a supporting side plate, and the supporting side plate supports the frame.

4. The rubber refining device according to claim 1, characterized in that: The drainage rack comprises: A guide plate, the guide plate is arranged obliquely below the rotary joint; Two liquid baffles are respectively arranged on both sides of the guide plate along the length direction of the guide plate.

5. The rubber refining device according to claim 4, characterized in that: The drainage rack also includes: The U-shaped support frame is fixedly connected to the bottom of the guide plate, and the U-shaped support frame has a horizontal portion parallel to the horizontal plane.

6. The rubber refining device according to claim 5, characterized in that: A lifting rope connected with the liquid baffle plates is arranged between the two liquid baffle plates.

7. The rubber refining device according to claim 6, characterized in that: The liquid baffle plate is provided with a through hole for the lifting rope to pass through; both ends of the lifting rope are provided with a limiting portion with an area larger than the through hole area, and the limiting portion is located on the outer side of the liquid baffle plate.

8. The rubber refining device according to claim 1, characterized in that: The inside of the nip roller is provided with a cavity for accommodating heat transfer oil; the rotary joint is provided with a liquid inlet and a liquid outlet, and a heat transfer oil inlet pipe is connected to the inside of the rotary joint; the heat transfer oil inlet pipe extends into the cavity, and the heat transfer oil inlet pipe is connected to the liquid inlet.

9. The rubber refining device according to claim 1, characterized in that: It also includes a heat transfer oil delivery pipe and an oil return pipe; the heat transfer oil delivery pipe is connected to two oil delivery branch pipes, and the oil return pipe is connected to two oil return branch pipes; Among them, the two oil delivery branches are respectively connected to the liquid inlets of the two rotary joints, and the two oil return branches are respectively connected to the oil outlets of the two rotary joints; the outer walls of the heat transfer oil delivery pipe, oil return pipe, oil delivery branch and oil return branch are all covered with a thermal insulation layer.

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