Liquid additive injection device of double-cone rotary vacuum drier

Abstract

The liquid additive injection device is characterized in that an inner vacuum tube is arranged at the center of a right half shaft, one end of the inner vacuum tube extends into a double-cone material drum, and the inner side end of the inner vacuum tube is connected with a filter base; the outer side end of the right half shaft is connected with a rotating connector A. The inner vacuum pipe is connected with one connector of the rotating connector A. The rotating connector A is connected with an outer vacuum pipe which is connected to a vacuum system. One connector of the rotary connector A is connected with a rotary connector B. An oil spraying pipe is connected to one connector of the rotary connector B. The oil spraying pipe penetrates through the inner vacuum pipe and then penetrates out of the filter base to extend into the double-cone material drum. According to the utility model, the rotary joint B is arranged at the fixed part of the original oil injection pipe and the vacuum pipeline outside the equipment, the oil injection pipe is welded on the rotary joint B, the rotary joint B is externally connected with the oil injection pipe, the oil injection pipe and the filter base are directly sealed, and the condition of powder leakage caused by abrasion due to the fact that a driven seal is changed into a static seal is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a liquid additive injection device of a double-cone rotary vacuum dryer. Background Art

[0002] The role of plasticizers in tires is to improve the flexibility and plasticity of tire rubber, thereby improving the quality and performance of tires. At present, the double-cone vacuum dryer used in plasticizer mixing and drying equipment requires the addition of liquid additive white oil during the drying process due to product process requirements, so a liquid additive injection device is required.

[0003] In the prior art, the oil spray pipe needs to pass through the middle hole of the vacuum filter mounting base and extend into the double-cone drum to spray oil on the dry material. The oil spray pipe is fixed on the vacuum pipe outside the machine body. The distributor rotates with the double-cone drum. The oil spray pipe and the filter base are sealed by a PTFE bushing. In actual operation, the PTFE bushing is very easy to wear and produce gaps. When the cone drum is vacuum dried, the powder leaks into the vacuum system through the bushing gap, causing the vacuum system to be blocked by powder and unable to operate normally. The shaft sleeve needs to be replaced and the vacuum system needs to be cleaned after about two weeks of normal operation. This reduces production efficiency and increases production costs. Utility Model Content

[0004] The utility model aims to provide a liquid additive injection device for a double-cone rotary vacuum dryer, wherein a rotary joint B is installed at the fixed position of an original oil injection pipe and a vacuum pipeline outside the equipment, the oil injection pipe is welded to the rotary joint B, and the rotary joint B is further connected to an oil injection pipe, the oil injection pipe and a filter base are directly sealed, and a driven seal is changed into a static seal so that the powder leakage will not occur due to wear, thereby improving production efficiency and reducing production costs, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A liquid additive injection device for a double-cone rotary vacuum dryer, comprising a frame and a double-cone drum; feeding port covers and discharge valves are provided at the upper and lower ends of the double-cone drum, the left and right ends of the double-cone drum are connected with a left half shaft and a right half shaft, the left half shaft and the right half shaft are rotatably connected to the frame, and a driving device is drivingly connected to the right half shaft; an inner vacuum tube is provided at the center of the right half shaft, one end of the inner vacuum tube extends into the double-cone drum, a filter base is connected to the inner side end of the inner vacuum tube, and several vacuum filter covers are connected to the filter base; a rotary joint A is connected to the outer side end of the right half shaft, the inner vacuum tube is connected to one interface of the rotary joint A, an outer vacuum tube is connected to the rotary joint A, and the outer vacuum tube is connected to a vacuum system; a rotary joint B is connected to one interface of the rotary joint A, an oil spray pipe is connected to one interface of the rotary joint B, the oil spray pipe passes through the inner vacuum tube and then passes out from the filter base and extends into the double-cone drum, and the oil spray pipe is fixedly connected to the filter base to rotate synchronously; another interface of the rotary joint B is connected to an oil injection pipe, and the oil injection pipe is connected to the bottom of a storage tank.

[0007] A further improvement of the utility model is that the left half shaft is rotatably connected to a left bearing seat, the right half shaft is rotatably connected to a right bearing seat, and the left bearing seat and the right bearing seat are respectively connected to both ends of the top of the frame.

[0008] A further improvement of the utility model is that the driving device includes a motor and a speed reducer, the power output end of the motor is belt-drivingly connected to the power input end of the speed reducer, and the power output end of the speed reducer is belt-drivingly connected to the right half shaft.

[0009] A further improvement of the utility model is that the rotary joint A is a three-interface structure, and a pressure gauge is connected to one of the interfaces.

[0010] A further improvement of the utility model is that the oil spray pipe is welded to the center of the filter base, and a nozzle is connected to the inner side end of the oil spray pipe.

[0011] A further improvement of the utility model is that the storage tank is arranged higher than the oil spray pipe, and a first ball valve is connected to the oil injection pipe.

[0012] A further improvement of the utility model is that a cleaning pipe is connected to the oil injection pipe, and a second ball valve is connected to the cleaning pipe.

[0013] A further improvement of the utility model is that there are three vacuum filter covers arranged in an annular array.

[0014] A further improvement of the utility model is that the oil spray pipe is made of stainless steel.

[0015] The beneficial effects of the utility model:

[0016] The liquid additive injection device of the double-cone rotary vacuum dryer of the present utility model installs a rotary joint B at the fixed parts of the original spray oil pipe and the vacuum pipeline outside the equipment. The spray oil pipe is welded to the rotary joint B, and the rotary joint B is externally connected to an injection oil pipe. The spray oil pipe and the filter base are directly sealed. The driven seal is changed to a static seal, and powder leakage caused by wear will no longer occur, improving production efficiency and reducing production costs.

[0017] For the liquid additive injection device of the double-cone rotary vacuum dryer of the present utility model, a cleaning pipe is connected to the injection oil pipe, which can regularly flush the nozzle blocked by powder at high pressure, making it more convenient to use. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 It is a schematic diagram of the installation of the spray oil pipe of the present utility model.

[0020] In the figure: 1-frame, 2-double-cone drum, 3-feed port cover, 4-discharge valve, 5-left half shaft, 6-right half shaft, 7-inner vacuum pipe, 8-filter base, 9-vacuum filter cover, 10-rotary joint A, 11-outer vacuum pipe, 12-rotary joint B, 13-injection oil pipe, 14-storage tank, 15-left bearing seat, 16-right bearing seat, 17-motor, 18-reducer, 19-pressure gauge, 20-nozzle, 21-first ball valve, 22-cleaning pipe, 23-second ball valve, 24-spray oil pipe. Detailed Embodiments

[0021] The present utility model will be further illustrated below in conjunction with the drawings and specific embodiments.

[0022] Embodiment 1: As Figures 1-2As shown in the figure, a liquid additive injection device for a double-cone rotary vacuum dryer includes a frame 1 and a double-cone drum 2; feeding port covers 3 and discharging valves 4 are provided at the upper and lower ends of the double-cone drum 2, and a left half shaft 5 and a right half shaft 6 are connected to the left and right ends of the double-cone drum 2. The left half shaft 5 and the right half shaft 6 are rotatably connected to the frame 1, and a driving device is drivingly connected to the right half shaft 6; an inner vacuum tube 7 is provided at the center of the right half shaft 6, one end of the inner vacuum tube 7 extends into the double-cone drum 2, and a filter base 8 is connected to the inner side end of the inner vacuum tube 7. Several vacuum filter covers 9 are connected to the filter base 8; a rotary joint A 10 is connected to the outer side end of the right half shaft 6, the inner vacuum tube 7 is connected to an interface of the rotary joint A 10, and an outer vacuum tube 11 is connected to the rotary joint A 10. The outer vacuum tube 11 is connected to a vacuum system; a rotary joint B 12 is connected to an interface of the rotary joint A 10, an oil spray pipe 24 is welded to an interface of the rotary joint B 12, the oil spray pipe 24 passes through the inner vacuum tube 7 and then passes out from the filter base 8 and extends into the double-cone drum 2, and the oil spray pipe 24 is welded to the filter base 8 to rotate synchronously; another interface of the rotary joint B 12 is connected to an oil injection pipe 13, and the oil injection pipe 13 is connected to the bottom of a storage tank 14.

[0023] The left half shaft 5 is rotatably connected to a left bearing seat 15, the right half shaft 6 is rotatably connected to a right bearing seat 16, and the left bearing seat 15 and the right bearing seat 16 are respectively connected to both ends of the top of the frame 1.

[0024] The driving device includes a motor 17 and a speed reducer 18. The power output end of the motor 17 is belt-driven to the power input end of the speed reducer 18, and the power output end of the speed reducer 18 is belt-driven to the right half shaft 6.

[0025] The rotary joint A 10 has a three-interface structure, and a pressure gauge 19 is connected to one of the interfaces.

[0026] The oil spray pipe 24 is welded to the center of the filter base 8, and a nozzle 20 is connected to the inner side end of the oil spray pipe 24.

[0027] The storage tank 14 is arranged higher than the oil spray pipe 24, and a first ball valve 21 is connected to the oil injection pipe 13.

[0028] A cleaning pipe 22 is connected to the oil injection pipe 13, and a second ball valve 23 is connected to the cleaning pipe 22.

[0029] There are three vacuum filter covers 9 arranged in an annular array.

[0030] The oil spray pipe 24 is made of stainless steel.

[0031] The specific working principle of the present utility model is as follows:

[0032] During operation, under the action of the vacuum system, negative pressure is generated inside the double-cone drum 2, and because the storage tank 14 is at a high position, under the dual action of gravity and negative pressure, after opening the first ball valve 21, white oil will be sprayed into the double-cone drum 2 along the oil filling pipe 13, the rotary joint B12 and the oil injection pipe 24; since the oil injection pipe 24 and the filter base 8 are directly sealed, the dynamic seal is changed to a static seal, and there will be no wear and tear to cause powder leakage, thereby improving production efficiency and reducing production costs.

[0033] In addition, when the nozzle needs to be cleaned, a high-pressure air pipe can be connected to the cleaning pipe 22, and after the second ball valve 23 is opened, the powder blocked at the nozzle will be blown out.

[0034] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A liquid additive injection device for a double-cone rotary vacuum dryer, characterized in that: It includes a frame (1) and a double-cone material drum (2); feed port covers (3) and discharge valves (4) are provided at the upper and lower ends of the double-cone material drum (2), and a left half shaft (5) and a right half shaft (6) are connected to the left and right ends of the double-cone material drum (2). The left half shaft (5) and the right half shaft (6) are rotatably connected to the frame (1), and a driving device is drivingly connected to the right half shaft (6); an inner vacuum tube (7) is provided at the center of the right half shaft (6), one end of the inner vacuum tube (7) extends into the double-cone material drum (2), and a filter base (8) is connected to the inner side end of the inner vacuum tube (7). Several vacuum filter covers (9) are connected to the filter base (8); a rotary joint A (10) is connected to the outer side end of the right half shaft (6), the inner vacuum tube (7) is connected to one interface of the rotary joint A (10), and an outer vacuum tube (11) is connected to the rotary joint A (10). The outer vacuum tube (11) is connected to a vacuum system; a rotary joint B (12) is connected to one interface of the rotary joint A (10), a fuel injection pipe (24) is connected to one interface of the rotary joint B (12), the fuel injection pipe (24) passes through the inner vacuum tube (7) and then passes out of the filter base (8) and extends into the double-cone material drum (2). The fuel injection pipe (24) is fixedly connected to the filter base (8) to rotate synchronously; another interface of the rotary joint B (12) is connected to an oil injection pipe (13), and the oil injection pipe (13) is connected to the bottom of a storage tank (14).

2. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1, characterized in that: The left half shaft (5) is rotatably connected to a left bearing seat (15), the right half shaft (6) is rotatably connected to a right bearing seat (16), and the left bearing seat (15) and the right bearing seat (16) are respectively connected to both ends of the top of the frame (1).

3. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1, characterized in that: The driving device includes a motor (17) and a speed reducer (18). The power output end of the motor (17) is belt-drivenly connected to the power input end of the speed reducer (18), and the power output end of the speed reducer (18) is belt-drivenly connected to the right half shaft (6).

4. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1, characterized in that: The rotary joint A (10) has a three-interface structure, and a pressure gauge (19) is connected to one of the interfaces.

5. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1, characterized in that: The fuel injection pipe (24) is welded to the center of the filter base (8), and a nozzle (20) is connected to the inner side end of the fuel injection pipe (24).

6. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1 or 5, characterized in that: The storage tank (14) is arranged higher than the fuel injection pipe (24), and a first ball valve (21) is connected to the oil injection pipe (13).

7. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1, characterized in that: A cleaning pipe (22) is connected to the oil injection pipe (13), and a second ball valve (23) is connected to the cleaning pipe (22).

8. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1, characterized in that: There are three vacuum filter covers (9) arranged in an annular array.

9. The liquid additive injection device of the double-cone rotary vacuum dryer according to claim 1, characterized in that: The fuel injection pipe (24) is made of stainless steel.

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