CN209772211U - temperature-controllable three-roller grinding machine - Google Patents

Abstract

The application provides a temperature-controllable three-roller grinding machine, which comprises a frame and three grinding rollers arranged on the frame, wherein the three grinding rollers are a front roller, a middle roller and a rear roller respectively, the front roller, the middle roller and the rear roller are horizontally arranged and are parallel to each other, the three-roller grinding machine also comprises at least one laser width measuring component, the grinding roller comprises a metal roller core and a ceramic outer layer wrapped on the outer surface of the metal roller core, the metal roller core is provided with a central pipeline along the length direction, a plurality of side pipelines which are arranged around the central pipeline and extend along the length direction of the metal roller core, one end of the central pipeline is an open end, the other end of the central pipeline is communicated with one end of the side pipeline through a plurality of connecting pipelines, and the other end of the side pipeline is an open end.

Description

Temperature-controllable three-roller grinding machine

Technical Field

the application relates to a three-roller grinding machine with controllable temperature.

Background

A three-roll grinder, also called a three-roll mill, is mainly used for manufacturing various sizing agents such as paint, printing ink, pigment and the like, fully mixes solid and liquid materials in raw materials, and is particularly suitable for grinding products with high dispersion viscosity and fine granularity requirement. The three-roller grinding machine achieves the grinding effect by mutual extrusion of the surfaces of the three horizontal rollers and friction at different speeds. At present, a common three-roller grinding machine in production mainly comprises an iron frame and three rollers arranged on a bearing seat at the upper end of the frame. The centers of the rollers are on a straight line and can be horizontally arranged or slightly inclined, and the distance between the rollers is adjustable. In the prior art, the temperature of the grinding roller is usually adjusted by a water cooling method, and the grinding roller is cooled by water, but the temperature of the grinding roller cannot be accurately adjusted by the water cooling method.

Disclosure of Invention

The technical problem that this application will be solved provides a controllable three-roller of temperature grinds machine.

In order to solve the technical problem, the application provides a temperature-controllable three-roller grinding machine, which comprises a frame and three grinding rollers arranged on the frame, wherein the three grinding rollers are respectively a front roller, a middle roller and a rear roller, the front roller, the middle roller and the rear roller are horizontally arranged and are parallel to each other, the three-roller grinding machine also comprises at least one laser width measuring component, the grinding roller comprises a metal roller core and a ceramic outer layer wrapped on the outer surface of the metal roller core, the metal roller core is provided with a central pipeline along the length direction, a plurality of side pipelines which are arranged around the central pipeline and extend along the length direction of the metal roller core, one end of the central pipeline is an open end, the other end of the central pipeline is communicated with one end of the side pipeline through a plurality of connecting pipelines, and the other end of the side pipeline is an open end.

Preferably, the three-roll grinder further comprises a temperature adjusting system, the temperature adjusting system comprises an electric compressor, a four-way valve, an expansion valve and a heat exchanger which are sequentially communicated, and the grinding roll is communicated between the four-way valve and the expansion valve.

Preferably, when the four-way valve is at the first position, the condensing agent sequentially passes through the electric compressor, the four-way valve, the grinding roller, the expansion valve, the heat exchanger and the four-way valve and then returns to the electric compressor; when the four-way valve is in the second position, the condensing agent sequentially passes through the electric compressor, the four-way valve, the heat exchanger, the expansion valve, the grinding roller and the four-way valve and then returns to the electric compressor.

preferably, the three-roll mill further comprises a discharge hopper mounted on the rear roll.

Preferably, the three-roll grinder further comprises two material blocking devices, the two material blocking devices are arranged between the front roll and the middle roll, and a material inlet is formed between the two material blocking devices.

Preferably, a plurality of temperature sensors are further arranged on the grinding roller, and the temperature sensors are used for measuring the temperature of the grinding roller.

Preferably, the temperature sensor is arranged between the metal roller core and the ceramic outer layer.

Preferably, the three-roll grinder further comprises a controller for controlling the temperature regulating system according to the temperature measured by the temperature sensor.

The utility model provides a controllable three-roller grinding machine of temperature adjusts the temperature of grinding the roller through the refrigerant, can the accurate control grind the temperature of roller.

Drawings

FIG. 1 is a schematic view of a three-roll mill;

FIG. 2 is a schematic illustration of laser width measurement;

FIG. 3 is a schematic diagram of the laser width measuring assembly;

FIG. 4 is a schematic view of the front roller configuration;

Fig. 5 is a schematic view of a thermostat system.

Wherein: 1. a frame;

2. a mounting frame; 21. a CCD sensor; 22. a laser transmitter; 221. a point light source; 222. an emission lens; 211. a receiving unit; 212. a diaphragm; 213. a receiving lens; 23. a laser beam.

31. A front roller; 32. an intermediate roll; 33. a rear roller;

311. An outer ceramic layer; 312. a metal roll core;

4. A discharge hopper;

51. an electric compressor; 52. a four-way valve; 53. an expansion valve; 54. a heat exchanger; 55. an inverter;

61. A central conduit; 62. a side duct; 63. and connecting the pipelines.

Detailed Description

The present application is further described below in conjunction with the following figures and specific examples to enable those skilled in the art to better understand the present application and to practice it, but the examples are not intended to limit the present application.

as shown in fig. 1, for the three-roller grinder of this application, the three-roller grinder includes a frame 1, three grinding rollers disposed on the frame 1, the three grinding rollers are respectively a front roller 31, a middle roller 32, and a back roller 33, the front roller 31, the middle roller 32, and the back roller 33 are horizontally disposed and parallel to each other, the three-roller grinder further includes at least one laser width measuring assembly, the laser width measuring assembly includes a mounting frame 2 mounted on the frame 1, the mounting frame 2 is mounted with at least two CCD sensors 21, the laser width measuring assembly further includes a laser emitter 22 mounted on the frame 1, the CCD sensor 21 is located above the grinding rollers, the laser emitter 22 is located below the grinding rollers, the CCD sensors 21 and the laser emitter 22 are disposed in a one-to-one correspondence, a part of the laser beam 23 emitted by the laser emitter 22 is relatively passed through a gap between two adjacent grinding rollers The corresponding CCD sensor 21 receives.

The three roll mill also includes a discharge hopper 4 mounted on the rear roll 33.

The three-roller grinding machine further comprises two material blocking devices, the two material blocking devices are arranged between the front roller 31 and the middle roller 32, and a material inlet is formed between the two material blocking devices.

the laser emitter 22 includes a point light source 221, and an emitting lens 222 for converting the laser light emitted from the point light source 221 into parallel light.

The CCD sensor 21 includes a receiving lens 213, a diaphragm 212, and a receiving unit 211 in this order along the laser incidence direction.

The CCD sensor 21 further includes an analog-to-digital converter for converting the light signal received by the receiving unit 211 into a digital signal, and an image processor for processing the digital signal, and the image processor is configured to calculate the gap between two adjacent grinding rollers according to the digital signal.

The grinding roller comprises a metal roller core 312 and a ceramic outer layer 311 wrapping the outer surface of the metal roller core 312, wherein a central pipeline 61 and a plurality of side pipelines 62 which are arranged around the central pipeline 61 and extend along the length direction of the metal roller core 312 are arranged on the metal roller core 312 along the length direction of the metal roller core, one end of the central pipeline 61 is an open end, the other end of the central pipeline 61 is communicated with one end part of each side pipeline 62 through a plurality of connecting pipelines 63, and the other end of each side pipeline 62 is an open end.

the three-roller grinding machine also comprises a temperature adjusting system, the temperature adjusting system comprises an electric compressor 51, a four-way valve 52, an expansion valve 53 and a heat exchanger 54 which are sequentially communicated, the grinding roller is communicated between the four-way valve 52 and the expansion valve 53, when the four-way valve 52 is positioned at a first position, a condensing agent sequentially passes through the compressor, the four-way valve 52, the grinding roller, the expansion valve 53, the heat exchanger 54 and the four-way valve 52 and then returns to the condensing agent, and at the moment, the condensing agent passing through the grinding roller is in a high-temperature state and can heat the grinding roller; when the four-way valve 52 is at the second position, the condensing agent sequentially passes through the condensing agent, the four-way valve 52, the heat exchanger 54, the expansion valve 53, the grinding roller and the four-way valve 52 and then returns to the condensing agent, and at the moment, the condensing agent passing through the grinding roller is in a low-temperature state, so that the grinding roller can be cooled. This temperature regulating system can adjust the temperature of grinding roller according to actual conditions.

The above-described embodiments are merely preferred embodiments for fully illustrating the present application, and the scope of the present application is not limited thereto. The equivalent substitution or change made by the person skilled in the art on the basis of the present application is within the protection scope of the present application. The protection scope of this application is subject to the claims.

Claims (7)

1. A three-roller grinding machine with controllable temperature is characterized by comprising a frame and three grinding rollers arranged on the frame, wherein the three grinding rollers are respectively a front roller, a middle roller and a rear roller, the front roller, the middle roller and the rear roller are horizontally arranged and are parallel to each other, the three-roller grinding machine also comprises at least one laser width measuring component, the grinding roller comprises a metal roller core and a ceramic outer layer wrapped on the outer surface of the metal roller core, the metal roller core is provided with a central pipeline along the length direction, a plurality of side pipelines which are arranged around the central pipeline and extend along the length direction of the metal roller core, one end of the central pipeline is an open end, the other end of the central pipeline is communicated with one end of the side pipeline through a plurality of connecting pipelines, and the other end of the side pipeline is an open end.

2. A three-roll grinder with controllable temperature as claimed in claim 1, wherein the three-roll grinder further comprises a temperature adjusting system, the temperature adjusting system comprises an electric compressor, a four-way valve, an expansion valve and a heat exchanger which are sequentially communicated, and the grinding roll is communicated between the four-way valve and the expansion valve.

3. The three-roll grinder with controllable temperature as claimed in claim 2, wherein when the four-way valve is in the first position, the condensing agent passes through the motor-driven compressor, the four-way valve, the grinding roll, the expansion valve, the heat exchanger, the four-way valve in sequence and then returns to the motor-driven compressor; when the four-way valve is in the second position, the condensing agent sequentially passes through the electric compressor, the four-way valve, the heat exchanger, the expansion valve, the grinding roller and the four-way valve and then returns to the electric compressor.

4. A three roll mill with controlled temperature according to claim 3, characterized in that the three roll mill further comprises two dams between the front roll and the intermediate roll, between which dams a material inlet opening is formed.

5. A three-roll mill with controllable temperature according to claim 4, characterized in that the mill rolls are further provided with a plurality of temperature sensors for measuring the temperature of the mill rolls.

6. A three-roll mill with controllable temperature according to claim 5, characterised in that the temperature sensor is arranged between the metal roll core and the ceramic shell.

7. A three-roll mill according to claim 6, characterised in that the mill further comprises a controller for controlling the tempering system in dependence on the temperature measured by the temperature sensor.