A high-efficiency energy-saving multi-stage crushing system for particulate materials

Abstract

The present application is directed to the high efficiency energy saving type multi-stage crushing system of granular material, the upper left side of the shell is fixed with first and second crushing mechanism, and the lower part is fixed with third crushing mechanism; the first classification guide mechanism is fixed at the discharge port of the first crushing mechanism, and the first classification guide mechanism is respectively connected with the first conveying mechanism, the feed inlet of the third crushing mechanism and the total discharge port; the second classification guide mechanism is fixed at the discharge port of the second crushing mechanism, and the second classification guide mechanism is respectively connected with the feed inlet of the second crushing mechanism and the total discharge port; the first crushing mechanism crushes the granular material, the first classification guide mechanism screens out the large granular material and sends it to the second crushing mechanism, screens out the medium granular material and sends it to the third crushing mechanism, and screens out the small granular material and sends it to the total discharge port; the second crushing mechanism crushes the large granular material, the second classification guide mechanism screens out the small granular material and sends it to the total discharge port, and the rest of the material is sent to the third crushing mechanism; the third crushing mechanism crushes the material and sends it to the total discharge port.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crushing, in particular to a high-efficiency energy-saving multi-stage crushing system for granular materials. BACKGROUND

[0002] The crushing device is used for crushing large-particle materials into small-particle materials.

[0003] In the process of crushing the existing granular materials in the crushing device, the materials often pass through different crushing mechanisms in sequence to realize step-by-step crushing. Regardless of the particle size of the materials, a single channel is used to pass through different crushing mechanisms in sequence. For the materials that have been crushed into small particles, the crushing time of the materials is greatly increased. Therefore, the existing crushing device cannot realize the classification of the particle size of the materials, which is not conducive to ensuring the crushing efficiency.

[0004] The existing patent application No. 202010541167.4, entitled Stone multi-stage crushing comprehensive utilization processing method, can only realize two-stage crushing and one-time screening. The two-stage screening can only realize two-grade screening. The existing patent also needs to set up multiple collection bins to collect the crushed and screened materials. The patent does not provide technical inspiration for three-stage crushing, two-time screening, three-grade screening in the first time, and two-grade screening in the second time. Therefore, the present application innovatively designs a high-efficiency energy-saving multi-stage crushing system for granular materials. SUMMARY

[0005] The present application provides a high-efficiency energy-saving multi-stage crushing system for granular materials to solve the problems and deficiencies of the prior art.

[0006] The present application solves the above technical problems by the following technical solutions:

[0007] The present application provides a high-efficiency energy-saving multi-stage crushing system for granular materials, characterized in that it comprises a machine shell, a first-stage crushing mechanism and a second-stage crushing mechanism are respectively fixed on the left and right sides of the upper part of the machine shell, a third-stage crushing mechanism is fixed between the first-stage crushing mechanism and the second-stage crushing mechanism in the lower part of the machine shell, the feed inlet of the first-stage crushing mechanism is communicated with the top of the machine shell, and the discharge outlet of the third-stage crushing mechanism is communicated with the total discharge outlet at the bottom of the machine shell.

[0008] A first-stage classification guide mechanism is fixed at the discharge outlet of the first-stage crushing mechanism, a first-stage conveying mechanism is fixed in the machine shell and close to the second-stage crushing mechanism, the first-stage classification guide mechanism is respectively connected with one end of the first-stage conveying mechanism, the feed inlet of the third-stage crushing mechanism, and the total discharge outlet, and the other end of the first-stage conveying mechanism is connected with the feed inlet of the second-stage crushing mechanism.

[0009] The second-stage grading material guiding mechanism is fixed at the discharge port of the second-stage crushing mechanism and is connected with the feed port and the total discharge port of the third-stage crushing mechanism;

[0010] The multi-stage crushing system further comprises a main controller, which is configured to control the first-stage crushing mechanism, the first-stage grading material guiding mechanism, the first-stage conveying mechanism, the second-stage crushing mechanism, the second-stage grading material guiding mechanism and the third-stage crushing mechanism to be turned on in sequence after receiving a crushing instruction, control the first-stage crushing mechanism to perform first-stage crushing operation on the entering particle materials, control the first-stage grading material guiding mechanism to screen out large particle materials and convey them to the second-stage crushing mechanism through the first-stage conveying mechanism, screen out medium particle materials and convey them to the third-stage crushing mechanism, screen out small particle materials and convey them directly to the total discharge port, control the second-stage crushing mechanism to perform second-stage crushing operation on the entering large particle materials, control the second-stage grading material guiding mechanism to screen out small particle materials and convey them directly to the total discharge port and convey the remaining particle materials to the third-stage crushing mechanism, and control the third-stage crushing mechanism to perform third-stage crushing operation on the entering particle materials and convey them to the total discharge port through the discharge port of the third-stage crushing mechanism.

[0011] Further, the first-stage grading material guiding mechanism comprises a first vibration grading sieve plate, a second vibration grading sieve plate and a third discharge plate which are arranged in sequence from top to bottom and are fixed at the discharge port of the first-stage crushing mechanism, and further comprises a first energy-saving vibration motor, a second energy-saving vibration motor and a third energy-saving vibration motor which are fixed at the discharge port of the first-stage crushing mechanism;

[0012] The first vibration grading sieve plate is arranged to be inclined downward from left to right, the second vibration grading sieve plate is arranged to be inclined downward from left to right, and the third discharge plate is arranged to be inclined downward from left to right;

[0013] A plurality of first sieve holes are formed in the first vibration grading sieve plate, a plurality of second sieve holes are formed in the second vibration grading sieve plate, and the inner diameter of the first sieve hole is larger than that of the second sieve hole;

[0014] The lowest part of the first vibration grading sieve plate is connected with one end of the first-stage conveying mechanism, the lowest part of the second vibration grading sieve plate is connected with the feed port of the third-stage crushing mechanism, and the lowest part of the third discharge plate is connected with the total discharge port;

[0015] The first energy-saving vibration motor is in contact with the bottom of the first vibration grading sieve plate, the second energy-saving vibration motor is in contact with the bottom of the second vibration grading sieve plate, and the third energy-saving vibration motor is in contact with the bottom of the third discharge plate;

[0016] The main controller is used for controlling the vibration of the first energy-saving vibration motor, the first energy-saving vibration motor drives the first vibration grading sieve plate to vibrate, so that the medium particle material and the small particle material on the first vibration grading sieve plate fall through the first sieve hole on the second vibration grading sieve plate, and the large particle material is conveyed to the second crushing mechanism through the first conveying mechanism; the second energy-saving vibration motor is controlled to vibrate, the second energy-saving vibration motor drives the second vibration grading sieve plate to vibrate, so that the small particle material on the second vibration grading sieve plate falls through the second sieve hole on the third guide plate, and the medium particle material is conveyed to the third crushing mechanism; the third energy-saving vibration motor is controlled to vibrate, the third energy-saving vibration motor drives the third guide plate to vibrate, so that the small particle material on the third guide plate directly slides into the total discharge port.

[0017] Further, the second grading guide mechanism comprises an upper vibration grading sieve plate and a lower guide plate which are arranged in an interval from top to bottom and fixed at the discharge port of the second crushing mechanism, and further comprises an upper energy-saving vibration motor and a lower energy-saving vibration motor which are fixed at the discharge port of the second crushing mechanism.

[0018] The upper vibration grading sieve plate is arranged to be inclined downward from right to left, and the lower guide plate is arranged to be inclined downward from right to left.

[0019] The upper vibration grading sieve plate is arranged to be inclined downward from right to left, and the lower guide plate is arranged to be inclined downward from right to left.

[0020] The upper vibration grading sieve plate is arranged to be inclined downward from right to left, and the lower guide plate is arranged to be inclined downward from right to left.

[0021] The upper vibration grading sieve plate is arranged to be inclined downward from right to left, and the lower guide plate is arranged to be inclined downward from right to left.

[0022] The main controller is used for controlling the vibration of the first energy-saving vibration motor, the first energy-saving vibration motor drives the first vibration grading sieve plate to vibrate, so that the medium particle material and the small particle material on the first vibration grading sieve plate fall through the first sieve hole on the second vibration grading sieve plate, and the large particle material is conveyed to the second crushing mechanism through the first conveying mechanism; the second energy-saving vibration motor is controlled to vibrate, the second energy-saving vibration motor drives the second vibration grading sieve plate to vibrate, so that the small particle material on the second vibration grading sieve plate falls through the second sieve hole on the third guide plate, and the medium particle material is conveyed to the third crushing mechanism; the third energy-saving vibration motor is controlled to vibrate, the third energy-saving vibration motor drives the third guide plate to vibrate, so that the small particle material on the third guide plate directly slides into the total discharge port.

[0023] The positive progress effect of the present application is that:

[0024] The application designs a three-stage crushing structure and a secondary screening structure with relatively simple structure, and realizes the classification crushing of particle materials according to different particle sizes. The particle materials after the first-stage crushing are directly screened to the total discharge port for small particle materials, screened to the three-stage crushing for medium particle materials, and screened to the second-stage crushing for large particle materials. The particle materials after the second-stage crushing are directly screened to the total discharge port for small particle materials, and screened to the three-stage crushing for the rest particle materials. The particle materials after the third-stage crushing are all discharged to the total discharge port. The first screening after the first-stage crushing is divided into three grades, and the second screening after the second-stage crushing is divided into two grades, so that the screening design is more optimized.

[0025] The application does not need the second-stage crushing and the third-stage crushing for the small particle materials after the first-stage crushing, does not need the second-stage crushing for the medium particle materials after the first-stage crushing, and only needs the second-stage crushing for the large particle materials after the first-stage crushing. The application does not need the third-stage crushing for the small particle materials after the second-stage crushing, and needs the third-stage crushing for the rest particle materials. The classification crushing mechanism according to different particle sizes is beneficial to improve the work efficiency, save the crushing process, and realize the high efficiency and energy saving of crushing. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 The figure is a control principle diagram of the high-efficiency energy-saving multi-stage crushing system of the embodiment of the application.

[0027] Fig. 2 The figure is a structure schematic diagram of the high-efficiency energy-saving multi-stage crushing system of the embodiment of the application. DETAILED DESCRIPTION

[0028] To make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme of the embodiments of the application will be described in detail below with reference to the drawings of the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, but not all the embodiments of the application. Based on the embodiments of the application, all the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the application.

[0029] As Figs. 1-2As shown, the embodiment provides a high-efficiency energy-saving multi-stage crushing system for granular materials, which comprises a casing, a first crushing mechanism 10 and a second crushing mechanism 20 are fixed at the upper left and right sides in the casing respectively, the second crushing mechanism 20 is arranged at a position lower than that of the first crushing mechanism 10, and a third crushing mechanism 30 is fixed at the lower part of the casing between the first crushing mechanism 10 and the second crushing mechanism 20. The feeding port of the first crushing mechanism 10 is in communication with the top of the casing. Specifically, the feeding port of the first crushing mechanism 10 can protrude from the top of the casing or be flush with the opening of the top of the casing. The discharging port of the third crushing mechanism 30 is in communication with the total discharging port at the bottom of the casing.

[0030] In the embodiment, a first grading and guiding mechanism 40 is fixed at the discharging port of the first crushing mechanism 10, and a first conveying mechanism 50 is fixed in the casing and close to the second crushing mechanism 20. The first grading and guiding mechanism 40 is respectively connected to one end of the first conveying mechanism 50, the feeding port of the third crushing mechanism 30 and the total discharging port. The other end of the first conveying mechanism 50 is connected to the feeding port of the second crushing mechanism 20.

[0031] The first conveying mechanism 50 comprises an inclined feeding machine arranged obliquely upward from left to right.

[0032] The first grading and guiding mechanism 40 comprises a first vibrating grading sieve plate 41, a second vibrating grading sieve plate 42 and a third guiding plate 43 arranged sequentially and spaced apart from top to bottom and fixed at the discharging port of the first crushing mechanism 10. The first grading and guiding mechanism 40 further comprises a first energy-saving vibrating motor 44, a second energy-saving vibrating motor 45 and a third energy-saving vibrating motor 46 fixed at the discharging port of the first crushing mechanism 10.

[0033] The first vibrating grading sieve plate 41 is arranged obliquely downward from left to right, the second vibrating grading sieve plate 42 is arranged obliquely downward from left to right, and the third guiding plate 43 is arranged obliquely downward from left to right. The inclination angle of the third guiding plate 43 is greater than that of the second vibrating grading sieve plate 42, and the inclination angle of the second vibrating grading sieve plate 42 is greater than that of the first vibrating grading sieve plate 41.

[0034] A plurality of first sieve holes are formed in the first vibrating grading sieve plate 41, and a plurality of second sieve holes are formed in the second vibrating grading sieve plate 42. The inner diameter of the first sieve hole is greater than that of the second sieve hole.

[0035] The lowest part of the first vibrating grading sieve plate 41 is connected to one end of the first conveying mechanism 50, the lowest part of the second vibrating grading sieve plate 42 is connected to the feeding port of the third crushing mechanism 30, and the lowest part of the third guiding plate 43 is connected to the total discharging port.

[0036] The first energy-saving vibration motor 44 is in contact with the bottom of the first vibration grading sieve plate 41, the second energy-saving vibration motor 45 is in contact with the bottom of the second vibration grading sieve plate 42, and the third energy-saving vibration motor 46 is in contact with the bottom of the third guide plate 43.

[0037] In the embodiment, the second grading guide mechanism 60 is fixed at the discharge port of the second crushing mechanism 20 and is connected to the feed port and the total discharge port of the third crushing mechanism 30.

[0038] The second grading guide mechanism 60 includes an upper vibration grading sieve plate 61 and a lower guide plate 62 which are sequentially and spacedly arranged from top to bottom and are fixed at the discharge port of the second crushing mechanism 20, and further includes an upper energy-saving vibration motor 63 and a lower energy-saving vibration motor 64 which are fixed at the discharge port of the second crushing mechanism 20.

[0039] The upper vibration grading sieve plate 61 is arranged to be inclined downward from right to left, the lower guide plate 62 is arranged to be inclined downward from right to left, and the inclination angle of the lower guide plate 62 is greater than that of the upper vibration grading sieve plate 61.

[0040] The upper vibration grading sieve plate 61 is provided with a plurality of upper sieve holes, and the inner diameter of the upper sieve hole is the same as that of the second sieve hole of the second vibration grading sieve plate 42.

[0041] The lowest part of the upper vibration grading sieve plate 61 is connected to the feed port of the third crushing mechanism 30, and the lowest part of the lower guide plate 62 is connected to the total discharge port.

[0042] The upper energy-saving vibration motor 63 is in contact with the bottom of the upper vibration grading sieve plate 61, and the lower energy-saving vibration motor 64 is in contact with the bottom of the lower guide plate 62.

[0043] In the embodiment, the first crushing mechanism 10 includes a first crushing cavity 11, two first crushing rollers 12 are installed in the first crushing cavity 11; the second crushing mechanism 20 includes a second crushing cavity 21, two second crushing rollers 22 are installed in the second crushing cavity 21; the third crushing mechanism 30 includes a third crushing cavity 31, two third crushing rollers 32 are installed in the third crushing cavity 31; the spacing between the two first crushing rollers 12 is greater than the spacing between the two second crushing rollers 22, and the spacing between the two second crushing rollers 22 is greater than the spacing between the two third crushing rollers 32. By adjusting the spacing between the crushing rollers of different levels, the gradual refinement of different crushing particle sizes is realized.

[0044] The multi-stage crushing system further includes a main controller which is fixed on the outer wall of the cabinet or is separately arranged from the cabinet.

[0045] The main controller is used to control the first-stage crushing mechanism 10, the first-stage grading material guiding mechanism 40, the first-stage conveying mechanism 50, the second-stage crushing mechanism 20, the second-stage grading material guiding mechanism 60 and the third-stage crushing mechanism 30 to be opened in sequence after receiving a crushing instruction.

[0046] I. The first-stage crushing mechanism 10 is controlled to perform a first-stage crushing operation on the entering granular materials, and the first-stage crushed granular materials enter the first-stage grading material guiding mechanism 40. The first-stage grading material guiding mechanism 40 is controlled to screen out large granular materials and convey them to the second-stage crushing mechanism 20 through the first-stage conveying mechanism 50, screen out medium granular materials and convey them to the third-stage crushing mechanism 30, and screen out small granular materials and directly convey them to the total discharge outlet. Specifically, the first energy-saving vibration motor 44 is controlled to vibrate, and the first energy-saving vibration motor 44 drives the first vibrating grading sieve plate 41 to vibrate, so that the medium granular materials and the small granular materials on the first vibrating grading sieve plate 41 fall through the first sieve holes onto the second vibrating grading sieve plate 42, and the large granular materials are conveyed to the second-stage crushing mechanism 20 through the first-stage conveying mechanism 50. The second energy-saving vibration motor 45 is controlled to vibrate, and the second energy-saving vibration motor 45 drives the second vibrating grading sieve plate 42 to vibrate, so that the small granular materials on the second vibrating grading sieve plate 42 fall through the second sieve holes onto the third discharge plate 43, and the medium granular materials are conveyed to the third-stage crushing mechanism 30. The third energy-saving vibration motor 46 is controlled to vibrate, and the third energy-saving vibration motor 46 drives the third discharge plate 43 to vibrate, so that the small granular materials on the third discharge plate 43 directly slide into the total discharge outlet.

[0047] II. The second-stage crushing mechanism 20 is controlled to perform a second-stage crushing operation on the entering large granular materials, and the second-stage crushed granular materials enter the second-stage grading material guiding mechanism 60. The second-stage grading material guiding mechanism 60 is controlled to screen out small granular materials and directly convey them to the total discharge outlet, and convey the remaining granular materials to the third-stage crushing mechanism 30. Specifically, the upper energy-saving vibration motor 63 is controlled to vibrate, and the upper energy-saving vibration motor 63 drives the upper vibrating grading sieve plate 61 to vibrate, so that the small granular materials on the upper vibrating grading sieve plate 61 fall through the upper sieve holes onto the lower discharge plate 64, and the remaining granular materials are conveyed to the third-stage crushing mechanism 30. The lower energy-saving vibration motor 64 is controlled to vibrate, and the lower energy-saving vibration motor 64 drives the lower discharge plate 64 to vibrate, so that the small granular materials on the lower discharge plate 64 directly slide into the total discharge outlet.

[0048] III. The third-stage crushing mechanism 30 is controlled to perform a third-stage crushing operation on the entering granular materials and convey them to the total discharge outlet through the discharge outlet of the third-stage crushing mechanism 30.

[0049] The embodiment facilitates step-by-step screening according to different particle sizes. After the first-stage crushing, the small-particle material is directly screened into the total discharge port, the medium-particle material is screened into the third-stage crushing, and the large-particle material is screened into the second-stage crushing. After the second-stage crushing, the small-particle material is directly screened into the total discharge port, and the remaining particle material is screened into the third-stage crushing for third-stage crushing. The particle material after the third-stage crushing enters the total discharge port.

[0050] The small-particle material refers to the relatively small particle material, the large-particle material refers to the relatively large particle material, and the medium-particle material refers to the relatively medium particle material.

[0051] In the embodiment, the cooling function of the first-stage crushing mechanism 10 and the function of improving the brittleness of the particle material in the first-stage crushing mechanism 10 are realized. Specifically, the first-stage infrared temperature sensor 13 is installed in the first-stage crushing cavity 11, the first-stage liquid nitrogen inlet 14 for introducing liquid nitrogen is formed on the first-stage crushing cavity 11, the first-stage electric control valve is arranged on the first-stage liquid nitrogen inlet 14 and outside the first-stage crushing cavity 11, the first-stage air hole is formed on the first-stage crushing cavity 11, and the air hole corresponding to the first-stage air hole is formed on the machine shell. The first-stage infrared temperature sensor 13 is used to sense the first-stage temperature in the first-stage crushing cavity 11. The main controller is used to determine whether the first-stage temperature is greater than the first set temperature. When the first-stage temperature is greater than the first set temperature, the first-stage electric control valve is controlled to be opened, so that the liquid nitrogen enters the first-stage crushing cavity 11 to cool down. When the first-stage temperature is not greater than the first set temperature, the first-stage electric control valve is controlled to be closed. During the cooling process, the liquid nitrogen changes into nitrogen gas, which is discharged through the first-stage air hole and the air hole corresponding to the first-stage air hole on the machine shell, so as to prevent the danger caused by the fullness of nitrogen gas in the first-stage crushing cavity 11 or the machine shell.

[0052] In the embodiment, the cooling function of the second-stage crushing mechanism 20 and the function of improving the brittleness of the particle material in the second-stage crushing mechanism 20 are realized. Specifically, the second-stage infrared temperature sensor 23 is installed in the second-stage crushing cavity 21, the second-stage liquid nitrogen inlet 24 for introducing liquid nitrogen is formed on the second-stage crushing cavity 21, the second-stage electric control valve is arranged on the second-stage liquid nitrogen inlet 24 and outside the second-stage crushing cavity 21, the second-stage air hole is formed on the second-stage crushing cavity 21, and the air hole corresponding to the second-stage air hole is formed on the machine shell. The second-stage infrared temperature sensor 23 is used to sense the second-stage temperature in the second-stage crushing cavity 21. The main controller is used to determine whether the second-stage temperature is greater than the second set temperature. When the second-stage temperature is greater than the second set temperature, the second-stage electric control valve is controlled to be opened, so that the liquid nitrogen enters the second-stage crushing cavity 21 to cool down. When the second-stage temperature is not greater than the second set temperature, the second-stage electric control valve is controlled to be closed. During the cooling process, the liquid nitrogen changes into nitrogen gas, which is discharged through the second-stage air hole and the air hole corresponding to the second-stage air hole on the machine shell, so as to prevent the danger caused by the fullness of nitrogen gas in the second-stage crushing cavity 21 or the machine shell.

[0053] In this embodiment, the cooling function of the three-stage crushing mechanism 30 and the function of improving the brittleness of the particle materials inside it are realized. Specifically, a three-stage infrared temperature measurement sensor 33 is installed in the three-stage crushing cavity 31, a three-stage liquid nitrogen inlet 34 for introducing liquid nitrogen is arranged on the three-stage crushing cavity 31, a three-stage electric control valve is arranged on the three-stage liquid nitrogen inlet 34 and outside the three-stage crushing cavity 31, a three-stage air vent is arranged on the three-stage crushing cavity 31, and an air vent corresponding to the three-stage air vent is arranged on the machine shell. The three-stage infrared temperature measurement sensor 33 is used to sense the three-stage temperature inside the three-stage crushing cavity 31, and the main controller is used to determine whether the three-stage temperature is greater than the third set temperature. If yes, the three-stage electric control valve is opened, so that the liquid nitrogen enters the three-stage crushing cavity 31 for cooling, until the three-stage temperature is not greater than the third set temperature, and the three-stage electric control valve is closed. During the cooling process, the liquid nitrogen becomes nitrogen gas, which is discharged through the three-stage air vent and the air vent corresponding to the three-stage air vent on the machine shell, preventing the danger of filling the three-stage crushing cavity 31 or the machine shell with nitrogen gas.

[0054] In this embodiment, the first set temperature, the second set temperature and the third set temperature are set to the same temperature value. By introducing liquid nitrogen, the heat generated during crushing is absorbed, and the particle materials can be cooled and the brittleness of the particle materials is improved, thereby improving the crushing effect.

[0055] In this embodiment, the dust adsorption function at the first-stage grading material guiding mechanism 40 is realized. Specifically, the machine shell includes a first-stage material guiding channel 70 wrapped outside the first-stage grading material guiding mechanism 40, a first-stage dust concentration sensor 71 is installed in the first-stage material guiding channel 70, a first-stage air inlet 72 is arranged on the top plate of the first-stage material guiding channel 70, the first-stage air inlet 72 is connected to an external first-stage bag through an external first-stage air channel, and a first-stage air pump is installed on the first-stage air channel. The first-stage dust concentration sensor 71 is used to detect the first-stage dust concentration in the first-stage material guiding channel 70, and the main controller is used to determine whether the first-stage dust concentration is greater than the first set dust concentration. If yes, the first-stage air pump is turned on to suck the dust in the first-stage material guiding channel 70 into the first-stage bag, until the first-stage dust concentration is not greater than the first set dust concentration, and the first-stage air pump is turned off.

[0056] In the embodiment, the dust adsorption function at the secondary grading material guiding mechanism 60 is realized. Specifically, the shell includes a secondary material guiding channel 80 wrapped outside the secondary grading material guiding mechanism 60, a secondary dust concentration sensor is installed in the secondary material guiding channel 80, a secondary air inlet 81 is arranged on the top plate of the secondary material guiding channel 80, the secondary air inlet 81 is connected to an external secondary bag through an external secondary air channel, and a secondary air pump is installed on the secondary air channel. The secondary dust concentration sensor is used to detect the secondary dust concentration in the secondary material guiding channel 80, the main controller is used to determine whether the secondary dust concentration is greater than the second set dust concentration, and when the answer is yes, the secondary air pump is controlled to be turned on to suck the dust in the secondary material guiding channel 80 into the secondary bag until the secondary dust concentration is not greater than the second set dust concentration, and then the secondary air pump is controlled to be turned off.

[0057] In the embodiment, the first set dust concentration and the second set dust concentration are set to the same dust concentration value.

[0058] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A high efficiency energy saving multi-stage crushing system for particulate material, characterized in that, It includes a shell, the shell is fixed with a first crushing mechanism and a second crushing mechanism in the upper left and right sides respectively, the shell is fixed with a third crushing mechanism in the lower part between the first crushing mechanism and the second crushing mechanism, the feed inlet of the first crushing mechanism is communicated with the top of the shell, and the discharge outlet of the third crushing mechanism is communicated with the total discharge outlet at the bottom of the shell; The first classification guide mechanism is fixed at the discharge outlet of the first crushing mechanism, the first conveying mechanism is fixed in the shell and close to the second crushing mechanism, the first classification guide mechanism is respectively connected with one end of the first conveying mechanism, the feed inlet of the third crushing mechanism and the total discharge outlet, and the other end of the first conveying mechanism is connected with the feed inlet of the second crushing mechanism; The second classification guide mechanism is fixed at the discharge outlet of the second crushing mechanism, and the second classification guide mechanism is respectively connected with the feed inlet of the third crushing mechanism and the total discharge outlet; The multi-stage crushing system further comprises a main controller, which is used for sequentially controlling the first crushing mechanism, the first classification guide mechanism, the first conveying mechanism, the second crushing mechanism, the second classification guide mechanism and the third crushing mechanism to be opened after receiving a crushing instruction, controlling the first crushing mechanism to perform first crushing operation on the entering particle materials, controlling the first classification guide mechanism to screen out large particle materials and conveying them into the second crushing mechanism through the first conveying mechanism, screening out medium particle materials and conveying them into the third crushing mechanism, screening out small particle materials and directly conveying them to the total discharge outlet, controlling the second crushing mechanism to perform second crushing operation on the entering large particle materials, controlling the second classification guide mechanism to screen out small particle materials and directly conveying them to the total discharge outlet, and conveying the remaining particle materials into the third crushing mechanism, and controlling the third crushing mechanism to perform third crushing operation on the entering particle materials and conveying them to the total discharge outlet through the discharge outlet of the third crushing mechanism; The first classification guide mechanism comprises a first vibration classification sieve plate, a second vibration classification sieve plate and a third guide plate which are arranged in the first crushing mechanism from top to bottom, and a first energy-saving vibration motor, a second energy-saving vibration motor and a third energy-saving vibration motor which are fixed in the first crushing mechanism; The first vibration classification sieve plate is arranged from left to right and downwardly inclined, the second vibration classification sieve plate is arranged from left to right and downwardly inclined, and the third guide plate is arranged from left to right and downwardly inclined; A plurality of first sieve holes are formed in the first vibration classification sieve plate, a plurality of second sieve holes are formed in the second vibration classification sieve plate, and the inner diameter of the first sieve hole is larger than that of the second sieve hole; The lowest part of the first vibration classification sieve plate is connected with one end of the first conveying mechanism, the lowest part of the second vibration classification sieve plate is connected with the feed inlet of the third crushing mechanism, and the lowest part of the third guide plate is connected with the total discharge outlet; The first energy-saving vibration motor is in contact with the bottom of the first vibration classification sieve plate, the second energy-saving vibration motor is in contact with the bottom of the second vibration classification sieve plate, and the third energy-saving vibration motor is in contact with the bottom of the third guide plate. The main controller is used for controlling the vibration of the first energy-saving vibration motor, the first energy-saving vibration motor drives the first vibration grading sieve plate to vibrate, so that the medium particle material and the small particle material on the first vibration grading sieve plate fall through the first sieve hole on the second vibration grading sieve plate, and the large particle material is conveyed to the second crushing mechanism through the first conveying mechanism; the second energy-saving vibration motor is controlled to vibrate, the second energy-saving vibration motor drives the second vibration grading sieve plate to vibrate, so that the small particle material on the second vibration grading sieve plate falls through the second sieve hole on the third guide plate, and the medium particle material is conveyed to the third crushing mechanism; the third energy-saving vibration motor is controlled to vibrate, the third energy-saving vibration motor drives the third guide plate to vibrate, so that the small particle material on the third guide plate directly slides into the total discharge port.

2. The high-efficiency energy-saving multi-stage crushing system for particulate materials according to claim 1, characterized in that, The inclination angle of the third guide plate is greater than that of the second vibration grading sieve plate, and the inclination angle of the second vibration grading sieve plate is greater than that of the first vibration grading sieve plate.

3. The high-efficiency energy-saving multi-stage crushing system for granular materials according to claim 1, characterized in that, The second grading guide mechanism comprises an upper vibration grading sieve plate and a lower guide plate which are arranged in sequence from top to bottom and fixed at the discharge port of the second crushing mechanism, and further comprises an upper energy-saving vibration motor and a lower energy-saving vibration motor which are fixed at the discharge port of the second crushing mechanism. The upper vibration grading sieve plate is arranged to be inclined downward from right to left, and the lower guide plate is arranged to be inclined downward from right to left. A plurality of upper sieve holes are formed in the upper vibration grading sieve plate, and the inner diameter of the upper sieve hole is the same as that of the second sieve hole. The lowest part of the upper vibration grading sieve plate is opposite to the feeding port of the third crushing mechanism, and the lowest part of the lower guide plate is opposite to the total discharge port. The upper energy-saving vibration motor is in contact with the bottom of the upper vibration grading sieve plate, and the lower energy-saving vibration motor is in contact with the bottom of the lower guide plate. The main controller is used for controlling the vibration of the upper energy-saving vibration motor, the upper energy-saving vibration motor drives the upper vibration grading sieve plate to vibrate, so that the small particle material on the upper vibration grading sieve plate falls through the upper sieve hole on the lower guide plate, and the remaining particle material is conveyed to the third crushing mechanism; the lower energy-saving vibration motor is controlled to vibrate, the lower energy-saving vibration motor drives the lower guide plate to vibrate, so that the small particle material on the lower guide plate directly slides into the total discharge port.

4. The high-efficiency energy-saving multi-stage crushing system for granular materials according to claim 3, characterized in that, The inclination angle of the lower guide plate is greater than that of the upper vibration grading sieve plate.

5. The energy efficient multi-stage crushing system for particulate material as claimed in claim 1 wherein, The first crushing mechanism comprises a first crushing cavity, a first infrared temperature measurement sensor is installed in the first crushing cavity, a first liquid nitrogen inlet for guiding liquid nitrogen is formed in the first crushing cavity, a first electric control valve is arranged on the first liquid nitrogen inlet and outside the first crushing cavity, a first ventilation hole is further formed in the first crushing cavity, and a ventilation hole corresponding to the first ventilation hole is further formed in the machine shell. The second crushing mechanism comprises a second crushing cavity, a second infrared temperature measurement sensor is installed in the second crushing cavity, a second liquid nitrogen inlet for guiding liquid nitrogen is formed in the second crushing cavity, a second electric control valve is arranged on the second liquid nitrogen inlet and outside the second crushing cavity, a second ventilation hole is further formed in the second crushing cavity, and a ventilation hole corresponding to the second ventilation hole is further formed in the machine shell. The third crushing mechanism comprises a third crushing cavity, a third infrared temperature measuring sensor is installed in the third crushing cavity, a third liquid nitrogen inlet for introducing liquid nitrogen is formed on the third crushing cavity, a third electric control valve is arranged on the third liquid nitrogen inlet and outside the third crushing cavity, a third ventilation hole is also formed on the third crushing cavity, and a ventilation hole corresponding to the third ventilation hole is also formed on the shell; The first infrared temperature measuring sensor is used for sensing the first temperature in the first crushing cavity, the main controller is used for determining whether the first temperature is greater than the first set temperature, and if yes, the first electric control valve is controlled to be opened so that the liquid nitrogen enters the first crushing cavity for cooling until the first temperature is not greater than the first set temperature, and then the first electric control valve is controlled to be closed; The second infrared temperature measuring sensor is used for sensing the second temperature in the second crushing cavity, the main controller is used for determining whether the second temperature is greater than the second set temperature, and if yes, the second electric control valve is controlled to be opened so that the liquid nitrogen enters the second crushing cavity for cooling until the second temperature is not greater than the second set temperature, and then the second electric control valve is controlled to be closed; The third infrared temperature measuring sensor is used for sensing the third temperature in the third crushing cavity, the main controller is used for determining whether the third temperature is greater than the third set temperature, and if yes, the third electric control valve is controlled to be opened so that the liquid nitrogen enters the third crushing cavity for cooling until the third temperature is not greater than the third set temperature, and then the third electric control valve is controlled to be closed.

6. The energy efficient multi-stage crushing system for particulate material as claimed in claim 5 wherein, Two first crushing rollers are installed in the first crushing cavity, two second crushing rollers are installed in the second crushing cavity, and two third crushing rollers are installed in the third crushing cavity. The spacing between the two first crushing rollers is greater than the spacing between the two second crushing rollers, and the spacing between the two second crushing rollers is greater than the spacing between the two third crushing rollers.

7. The energy efficient multi-stage crushing system for particulate material as claimed in claim 1 wherein, The shell comprises a first material guiding channel wrapped outside the first material grading and guiding mechanism, a first dust concentration sensor is installed in the first material guiding channel, a first air suction port is formed on the top plate of the first material guiding channel, the first air suction port is connected with an external first bag through a first air suction channel, and a first air suction pump is installed on the first air suction channel. The shell comprises a second material guiding channel wrapped outside the second material grading and guiding mechanism, a second dust concentration sensor is installed in the second material guiding channel, a second air suction port is formed on the top plate of the second material guiding channel, the second air suction port is connected with an external second bag through a second air suction channel, and a second air suction pump is installed on the second air suction channel. The first dust concentration sensor is used for detecting the first dust concentration in the first material guiding channel, the main controller is used for determining whether the first dust concentration is greater than the first set dust concentration, and if yes, the first air suction pump is controlled to be opened to suck the dust in the first material guiding channel until the first dust concentration is not greater than the first set dust concentration, and then the first air suction pump is controlled to be closed. The secondary dust concentration sensor is used for detecting the secondary dust concentration in the secondary material guiding channel, and the main controller is used for judging whether the secondary dust concentration is greater than the second set dust concentration, and if yes, controlling the secondary air suction pump to be opened to suck the dust in the secondary material guiding channel until the secondary dust concentration is not greater than the second set dust concentration, and then controlling the secondary air suction pump to be closed.

8. The energy efficient multi-stage crushing system for particulate material as claimed in claim 1 wherein, The first conveying mechanism comprises an inclined feeding machine which is arranged obliquely upward from left to right, and the main controller is fixed on the outer wall of the machine shell or is arranged separately from the machine shell.

9. The energy efficient multi-stage crushing system for particulate material as claimed in claim 1 wherein, The feeding port of the first crushing mechanism protrudes from the top of the machine shell or is flush with the opening of the top of the machine shell, and the second crushing mechanism is arranged at a position lower than the first crushing mechanism.

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