A method for using a highly efficient and energy-saving rubber dispersing and dissolving device

Abstract

The present invention relates to the field of chemical machinery and equipment, and in particular to a method for using an efficient and energy-saving rubber dispersing and dissolving device, comprising a support frame and a reactor arranged on the support frame, wherein a stirring device and a rubber block tearing device are arranged in the reactor, the top and bottom of the reactor are connected through a circulation pipeline, a circulation pump is arranged on the circulation pipeline, and a pressure weighing device is arranged between the upper part of the reactor and the support frame. Compared with the prior art, the present invention has a high degree of automation, saves the rubber cutting process before dissolution, and can directly put the rubber block into the reactor to avoid the danger of rubber cutting operation and reduce pollution; through the coordinated use of the stirring device, the rubber block tearing device, the base oil heater and the circulation pipeline, the sol time is greatly shortened, and the rapid dispersion and dissolution of the polymer rubber in the base oil is achieved, and it can also be used for the preparation of lubricating oils and coatings that require dispersion and homogeneity.

Description

Technical Field

[0001] The invention relates to the field of chemical machinery and equipment, and in particular to a method for using a high-efficiency and energy-saving rubber dispersing and dissolving device. Background Art

[0002] Lubricating oil tackifier, also known as viscosity index improver, is an oil-soluble high molecular weight polymer with a relative molecular mass ranging from tens of thousands to hundreds of thousands. It is generally in the form of rubber or solid at room temperature. For ease of use, it is usually diluted with 150SN or 100SN neutral oil to a 5% to 12% concentrate. In the traditional production of lubricating oil, the polymer rubber is dispersed and dissolved in the base oil. The base oil needs to be added to the blending kettle, the blending kettle is heated to keep it at a certain temperature, the tackifier dry glue is chopped, the cut dry glue is manually added to the blending kettle, and the mixture is stirred and mixed evenly. It usually takes 10-30 hours. Even after such a long time, the polymer adhesive rubber is easy to float on the oil surface or adhere to the wall of the vessel or the heating coil during the blending of the lubricating oil and the tackifier in the blending kettle, resulting in uneven blended adhesive concentrate, and the dry glue containing the macromolecular chain cannot be fully mixed into the lubricating oil. The lubricating oil produced with this concentrate is easy to stratify when used. Due to the friction temperature rise, the viscosity of the oil is reduced, and the dry glue is easy to precipitate. The precipitation of the dry glue will further reduce the viscosity of the oil. Such a vicious cycle seriously affects the lubricating performance of the oil and even causes the complete failure of the lubricating oil. At the same time, due to the low efficiency of simple constant temperature stirring, slow stirring speed, or insufficient insulation, the sol time is long, which is not conducive to the production efficiency of the lubricating oil. In addition, when cutting rubber blocks manually or with simple machinery, the operation has poor safety, low speed and serious pollution. Summary of the invention

[0003] Based on the above technical problems, the present invention provides a high-efficiency and energy-saving rubber dispersing and dissolving device with small safety hazards and convenient operation.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A method for using an efficient and energy-saving rubber dispersing and dissolving device, the key lies in: comprising a support frame and a reactor arranged on the support frame, the reactor is provided with a stirring device and a rubber block tearing device, the top and bottom of the reactor are connected through a circulation pipeline, the circulation pipeline is provided with a circulation pump, and a pressure weighing device is provided between the upper part of the reactor and the support frame.

[0006] Preferably, the circulation pipeline includes a circulating main pipe, a sol output pipe and a base oil input pipe which are connected, and valves are provided on the circulating main pipe, the sol output pipe and the base oil input pipe, and the input end and output end of the circulating main pipe are respectively connected to the bottom and the top of the reactor, and the circulating pump is arranged on the circulating main pipe, the sol output pipe is arranged near the output end of the circulating pump, and the base oil input pipe is arranged near the input end of the circulating pump. The effect of this scheme is that the rubber liquid concentrate can be circulated in the reactor, and the dissolved base oil can be replenished in time during the circulation process, so as to promote the dispersion and dissolution of rubber in the base oil.

[0007] Preferably, the stirring device comprises a vertically arranged stirring shaft, on which a plurality of stirring paddles are arranged, the sizes of the plurality of stirring paddles decreasing from top to bottom, and the upper end of the stirring shaft passes through the reactor and is connected to a variable frequency motor. The effect of this solution is that the stirring effect can be further improved by stirring paddles of different sizes.

[0008] Preferably, the stirring paddle comprises a stirring disk fixedly mounted on the stirring shaft and at least three stirring blades, and the plurality of stirring blades are evenly arranged on the circumferential surface of the stirring disk. The effect of this solution is that the stirring can be more complete and the stirring efficiency can be improved.

[0009] Preferably, there are two rubber block tearing devices, which are symmetrically arranged on both sides of the stirring shaft, and the rubber block tearing device includes a driving motor arranged at the bottom of the reactor, and the output shaft of the driving motor extends into the reactor and is connected to a dispersion disk. The effect of this solution is that the upper and lower saw teeth of the dispersion disk can shear, impact, crush and disperse larger colloids at high speed, so as to achieve a state of rapid mixing, dissolution, dispersion and refinement.

[0010] Preferably, the pressure weighing device includes a plurality of pressure sensors, the top of the pressure sensor is fixedly connected to the outer wall of the reactor through a mounting seat, and the bottom of the pressure sensor is tightly abutted against the support frame. The effect of this solution is that the amount of rubber colloid added to the reactor and the amount of base oil added can be accurately controlled.

[0011] Preferably, the circulation main pipe is further provided with a homogenizing mixer, the homogenizing mixer comprises a pipe body, the pipe body is fixedly connected to the circulation main pipe via a flange, a plurality of first mixing units and second mixing units are provided in the pipe body, and the first mixing units and the second mixing units are arranged at intervals along the liquid flow direction. The effect of this solution is that the circulating rubber concentrate can be further homogenized and mixed, thereby improving the dissolution efficiency.

[0012] Preferably, the input end of the base oil input pipe is connected to a base oil heater. The effect of this solution is to provide base oil at a required temperature and reduce the sol time.

[0013] Preferably, a feeding port is provided on the top of the reactor, which is convenient for feeding.

[0014] Compared with the prior art, the invention provides a method for using an efficient and energy-saving rubber dispersing and dissolving device with a high degree of automation, which saves the rubber cutting process before dissolution, and can directly put the rubber block into the reactor to avoid the danger of rubber cutting operation and reduce pollution; through the coordinated use of a stirring device, a rubber block tearing device, a base oil heater and a circulation pipeline, the sol time is greatly shortened, and a completely homogeneous rubber concentrate can be obtained in generally 3 hours, avoiding the low production efficiency of simple constant temperature stirring, the rubber easily adheres to the wall of the device and the heating coil, resulting in uneven blended rubber concentrate. The invention realizes the rapid dispersion and dissolution of polymer rubber in the base oil, and can also be used for the preparation of lubricating oils and coatings that require dispersion and homogeneity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 for Figure 1 AA section view;

[0017] Figure 3 Schematic diagram of the structure of the stirring paddle. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] like Figure 1-3As shown in, a method for using an efficient and energy-saving rubber dispersing and dissolving device comprises a support frame 1) and a reactor 2 arranged on the support frame 1, a stirring shaft 31 vertically arranged in the reactor 2, a plurality of stirring paddles 32 are arranged on the stirring shaft 31, the stirring paddles 32 comprise a stirring disk 321 and at least three stirring blades 322 fixedly sleeved on the stirring shaft 31, a plurality of the stirring blades 322 are evenly arranged on the circumferential surface of the stirring disk 321, the sizes of the plurality of stirring paddles 32 decrease from top to bottom, the upper end of the stirring shaft 31 passes through the reactor 2 and is connected to a variable frequency motor 33, two driving motors 41 are arranged opposite to the bottom of the reactor 2, the output shaft of the driving motor 41 extends into the reactor 2 and is connected to a dispersion disk 42, and the two dispersion disks 42 are symmetrically arranged on the stirring On both sides of the shaft 31, a plurality of pressure sensors 71 are evenly arranged around the upper part of the reactor 2. The top of the pressure sensor 71 is fixedly connected to the outer wall of the reactor 2 through a mounting seat 72, and the bottom of the pressure sensor 71 is tightly pressed against the support frame 1. The top and bottom of the reactor 2 are connected through a circulation main pipe 51. A circulation pump 6 and a homogenizer 8 are arranged on the circulation main pipe 51. The circulation main pipe 51 is connected with a sol output pipe 52 and a base oil input pipe 53. Valves 10 are arranged on the circulation main pipe 51, the sol output pipe 52 and the base oil input pipe 53. The sol output pipe 52 is arranged near the output end of the circulation pump 6, the base oil input pipe 53 is arranged near the input end of the circulation pump 6, and the input end of the base oil input pipe 53 is connected with a base oil heater 9.

[0020] The homogenizing mixer 8 includes a tube body 81, which is fixedly connected to the circulation main tube 51 through a flange. A plurality of first mixing units 82 and second mixing units 83 are provided in the tube body 81. The first mixing units 82 and the second mixing units 83 are spaced apart along the length direction of the tube body. The first mixing units 82 are cross-arranged metal frames, and the second mixing units 83 are parallel-arranged multi-fold metal plates.

[0021] When in use, the rubber block to be dissolved is added into the reactor 2 through the feeding port, and one third of the total base oil is pumped in, and the temperature of the base oil is not lower than 130°C. At the same time, the stirring device 3 and the rubber block tearing device 4 are started. After stirring for 30 minutes, the remaining base oil is continued to be pumped in, and the temperature of the base oil is not lower than 130°C. The stirring reactor is closed, the rubber tearing device is stopped, the circulation pump 6 is started, the corresponding valve 10 is opened, and the constant temperature circulation stirring is carried out for 2 hours. The stirring device 3 is stopped, and the rubber concentrate is stored in a heat-insulated manner or the homogenized rubber concentrate is pumped into a storage tank through the sol output pipe 52.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, those skilled in the art can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the protection scope of the present invention.

Claims

1. A method for using a highly efficient and energy-saving rubber dispersing and dissolving device, characterized in that: The rubber dispersing and dissolving device comprises a support frame (1) and a reaction kettle (2) arranged on the support frame (1), wherein the reaction kettle (2) is provided with a stirring device (3) and a rubber block tearing device (4), the top and bottom of the reaction kettle (2) are connected via a circulation pipeline (5), a circulation pump (6) is provided on the circulation pipeline (5), and a pressure weighing device (7) is provided between the upper part of the reaction kettle (2) and the support frame (1); The circulation pipeline (5) comprises a circulating main pipe (51), a sol output pipe (52) and a base oil input pipe (53) which are connected to each other. The circulating main pipe (51), the sol output pipe (52) and the base oil input pipe (53) are all provided with valves (10). The input end and the output end of the circulating main pipe (51) are respectively connected to the bottom and the top of the reaction kettle (2). The circulating pump (6) is arranged on the circulating main pipe (51). The sol output pipe (52) is arranged close to the output end of the circulating pump (6). The base oil input pipe (53) is arranged close to the input end of the circulating pump (6). The stirring device (3) comprises a vertically arranged stirring shaft (31), on which a plurality of stirring paddles (32) are arranged, and the sizes of the plurality of stirring paddles (32) decrease from top to bottom, and the upper end of the stirring shaft (31) passes through the reaction kettle (2) and is connected to a variable frequency motor (33); There are two rubber block tearing devices (4), which are symmetrically arranged on both sides of the stirring shaft (31), and the rubber block tearing devices (4) include a driving motor (41) arranged at the bottom of the reaction kettle (2), and the output shaft of the driving motor (41) extends into the reaction kettle (2) and is connected to a dispersion disk (42); The circulation main pipe (51) is also provided with a homogenizing mixer (8), the homogenizing mixer (8) comprising a pipe body (81), the pipe body (81) being fixedly connected to the circulation main pipe (51) via a flange, the pipe body (81) being provided with a plurality of first mixing units (82) and second mixing units (83), the first mixing units (82) and the second mixing units (83) being arranged at intervals along the length direction of the pipe body; The input end of the base oil input pipe (53) is connected to a base oil heater (9); When in use, the rubber block to be dissolved is added into the reaction kettle (2) through the feeding port, and one third of the total base oil is pumped into the reaction kettle, the temperature of the base oil is not less than 130°C, and the stirring device (3) and the rubber block tearing device (4) are started at the same time. After stirring for 30 minutes, the remaining base oil is pumped into the reaction kettle, the temperature of the base oil is not less than 130°C, the stirring kettle is sealed, the rubber tearing device is stopped, the circulation pump (6) is started, the corresponding valve (10) is opened, and the constant temperature circulation stirring is carried out for 2 hours, and the stirring device (3) is stopped. The rubber concentrate is stored in a heat-insulated manner or the homogenized rubber concentrate is pumped into a storage tank through the sol output pipe (52).

2. The method for using the high-efficiency and energy-saving rubber dispersing and dissolving device according to claim 1, characterized in that: The stirring paddle (32) comprises a stirring disk (321) fixedly sleeved on the stirring shaft (31) and at least three stirring blades (322), wherein the plurality of stirring blades (322) are evenly arranged on the circumferential surface of the stirring disk (321).

3. The method for using the high-efficiency and energy-saving rubber dispersing and dissolving device according to claim 1, characterized in that: The pressure weighing device (7) comprises a plurality of pressure sensors (71), the top of each pressure sensor (71) being fixedly connected to the outer wall of the reaction kettle (2) via a mounting seat (72), and the bottom of each pressure sensor (71) being tightly pressed against the support frame (1).

4. The method for using the high-efficiency and energy-saving rubber dispersing and dissolving device according to claim 1, characterized in that: A feeding port is provided on the top of the reaction kettle (2).

Images