Efficient energy-saving type multi-stage crushing system for particle materials

Abstract

According to the efficient energy-saving type multi-stage crushing system for the particle materials, a first-stage crushing mechanism and a second-stage crushing mechanism are fixed to the left side and the right side of the upper portion in a machine shell, and a third-stage crushing mechanism is fixed to the lower portion A first-stage grading guide mechanism is fixed at a discharge port of the first-stage crushing mechanism and is in butt joint with the first-stage conveying mechanism, a feed port of the third-stage crushing mechanism and a total discharge port; a secondary grading guide mechanism is fixed at a discharge port of the secondary crushing mechanism and is in butt joint with a feed port of the secondary crushing mechanism and a main discharge port respectively; the first-stage crushing mechanism crushes particle materials, the first-stage grading guide mechanism screens out large particle materials and sends the large particle materials to the second-stage crushing mechanism, the first-stage grading guide mechanism screens out medium particle materials and sends the medium particle materials to the third-stage crushing mechanism, the second-stage crushing mechanism crushes the large particle materials, and the third-stage crushing mechanism screens out small particle materials and sends the small particle materials to a total discharge port; and small-particle materials screened out by the second-stage grading material guiding mechanism are conveyed to a main discharging opening, other materials are conveyed to the third-stage crushing mechanism, and the materials are conveyed to the main discharging opening after being crushed by the third-stage crushing mechanism.

Description

Technical Field

[0001] The present invention relates to the field of crushing technology, and in particular to a high-efficiency and energy-saving multi-stage crushing system for granular materials. Background Art

[0002] Crushing device is used to crush large particles of material into small particles.

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

[0004] There is currently a patent for invention with the patent application number 202010541167.4 and the name of the method for comprehensive utilization and treatment of multi-stage crushing of stones. This patent can only achieve secondary crushing and primary screening, and only two-level screening can be achieved in the primary screening. In addition, this existing patent also requires the establishment of multiple collection bins to collect the materials after crushing and screening. This patent does not provide technical inspiration for three-stage crushing and secondary screening, and the first screening is divided into three-level screening and the second screening is divided into two-level screening. Therefore, the present invention innovatively designs a high-efficiency and energy-saving multi-stage crushing system for granular materials. Summary of the invention

[0005] In view of the problems and shortcomings of the prior art, the present invention provides a high-efficiency and energy-saving multi-stage crushing system for granular materials.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a high-efficiency and energy-saving multi-stage crushing system for particulate materials, which is characterized in that it comprises a casing, a primary crushing mechanism and a secondary crushing mechanism are respectively fixed on the left and right sides of the upper inner part of the casing, a third-stage crushing mechanism is fixed on the lower inner part of the casing and located between the primary crushing mechanism and the secondary crushing mechanism, a feed port of the primary crushing mechanism is connected to the top of the casing, and a discharge port of the third-stage crushing mechanism is connected to a total discharge port at the bottom of the casing;

[0008] A first-level grading material guiding mechanism is fixed at the discharge port of the first-level crushing mechanism, and a first-level conveying mechanism is fixed in the casing and close to the second-level crushing mechanism. The first-level grading material guiding mechanism is respectively connected to one end of the first-level conveying mechanism, the feed port and the total discharge port of the third-level crushing mechanism, and the other end of the first-level conveying mechanism is connected to the feed port of the second-level crushing mechanism;

[0009] A secondary grading material guiding mechanism is fixed at the discharge port of the secondary crushing mechanism, and the secondary grading material guiding mechanism is respectively connected to the feed port and the main discharge port of the tertiary crushing mechanism;

[0010] The multi-stage crushing system also includes a main controller, which is used to control the first-level crushing mechanism, the first-level grading and guiding mechanism, the first-level conveying mechanism, the second-level crushing mechanism, the second-level grading and guiding mechanism and the third-level crushing mechanism to start in sequence after receiving a crushing instruction, control the first-level crushing mechanism to perform a first-level crushing operation on the incoming granular material, control the first-level grading and guiding mechanism to screen out large granular materials and transport them to the second-level crushing mechanism through the first-level conveying mechanism, screen out medium granular materials and transport them to the third-level crushing mechanism, screen out small granular materials and directly transport them to the total discharge port, control the second-level crushing mechanism to perform a second-level crushing operation on the incoming large granular materials, control the second-level grading and guiding mechanism to screen out small granular materials and directly transport them to the total discharge port, and transport the remaining granular materials to the third-level crushing mechanism, and control the third-level crushing mechanism to perform a third-level crushing operation on the incoming granular materials and transport them to the total discharge port through the discharge port of the third-level crushing mechanism.

[0011] Furthermore, the primary grading material guiding mechanism comprises a first vibrating grading screen plate, a second vibrating grading screen plate and a third guide plate fixed at the material outlet of the primary crushing mechanism and arranged at intervals from top to bottom, and also comprises a first energy-saving vibration motor, a second energy-saving vibration motor and a third energy-saving vibration motor fixed at the material outlet of the primary crushing mechanism;

[0012] The first vibration grading screen plate is arranged to be tilted downward from left to right, the second vibration grading screen plate is arranged to be tilted downward from left to right, and the third derivation plate is arranged to be tilted downward from left to right;

[0013] The first vibration grading screen plate is provided with a plurality of first screen holes, the second vibration grading screen plate is provided with a plurality of second screen holes, and the inner diameter of the first screen holes is greater than the inner diameter of the second screen holes;

[0014] The lowest point of the first vibrating grading screen plate is connected to one end of the primary conveying mechanism, the lowest point of the second vibrating grading screen plate is connected to the feed port of the tertiary crushing mechanism, and the lowest point of the third outlet plate is connected to the main discharge port;

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

[0016] The main controller is used to control the vibration of the first energy-saving vibration motor, and the first energy-saving vibration motor drives the first vibration grading screen plate to vibrate accordingly, so that the medium-grained materials and small-grained materials on the first vibration grading screen plate fall onto the second vibration grading screen plate through the first sieve hole, and the large-grained materials are transported to the secondary crushing mechanism through the primary conveying mechanism; control the vibration of the second energy-saving vibration motor, and the second energy-saving vibration motor drives the second vibration grading screen plate to vibrate accordingly, so that the small-grained materials on the second vibration grading screen plate fall onto the third export plate through the second sieve hole, and the medium-grained materials are transported to the tertiary crushing mechanism; control the vibration of the third energy-saving vibration motor, and the third energy-saving vibration motor drives the third export plate to vibrate accordingly, so that the small-grained materials on the third export plate directly slide into the total discharge port.

[0017] Furthermore, the secondary grading material guiding mechanism comprises an upper vibrating grading screen plate and a lower guide plate fixed at the material outlet of the secondary crushing mechanism and arranged at intervals from top to bottom, and also comprises an upper energy-saving vibration motor and a lower energy-saving vibration motor fixed at the material outlet of the secondary crushing mechanism;

[0018] The upper vibration grading screen plate is arranged to be tilted downward from right to left, and the lower guide plate is arranged to be tilted downward from right to left;

[0019] The upper vibrating grading screen plate is provided with a plurality of upper screen holes, and the inner diameter of the upper screen holes is the same as the inner diameter of the second screen holes;

[0020] The lowest point of the upper vibrating grading screen plate is connected to the feed port of the three-stage crushing mechanism, and the lowest point of the lower lead-out plate is connected to the main discharge port;

[0021] The upper energy-saving vibration motor is in contact with the bottom of the upper vibration grading screen plate, and the lower energy-saving vibration motor is in contact with the bottom of the lower derivation plate;

[0022] The main controller is used to control the vibration of the upper energy-saving vibration motor, which drives the upper vibration grading screen plate to vibrate accordingly, so that the small particle materials on the upper vibration grading screen plate fall through the upper sieve holes onto the lower lead-out plate, and the remaining particle materials are transported to the tertiary crushing mechanism, and controls the vibration of the lower energy-saving vibration motor, which drives the lower lead-out plate to vibrate accordingly, so that the small particle materials on the lower lead-out plate directly slide into the total discharge port.

[0023] The positive and progressive effects of the present invention are:

[0024] The present invention designs a relatively simple three-stage crushing structure and a secondary screening structure, which realizes graded crushing of granular materials according to different particle sizes. After the primary crushing, the small granular materials are directly screened to the total discharge port, the medium granular materials are screened to the third stage crushing, and the large granular materials are screened to the second stage crushing; after the secondary crushing, the small granular materials are directly screened to the total discharge port, and the remaining granular materials are screened to the third stage crushing; the granular materials after the third stage crushing all enter the total discharge port. The first screening after the primary crushing of the present invention is divided into three-level screening, and the second screening after the secondary crushing is divided into two-level screening, and the screening design is more optimized.

[0025] The present invention does not need to perform secondary and tertiary crushing for small particle materials after primary crushing, does not need to perform secondary crushing for medium particle materials after primary crushing, and only needs to perform secondary crushing for large particle materials after primary crushing; the present invention does not need to perform tertiary crushing for small particle materials after secondary crushing, and the remaining particle materials need to perform tertiary crushing. The grading crushing mechanism of the present invention, which is realized according to different particle sizes, is conducive to improving work efficiency, saving crushing procedures, and realizing high efficiency and energy saving of crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a control principle diagram of a high-efficiency and energy-saving multi-stage crushing system according to a specific embodiment of the present invention.

[0027] Figure 2 It is a schematic structural diagram of a high-efficiency and energy-saving multi-stage crushing system according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] like Figure 1-2As shown, the present embodiment provides an efficient and energy-saving multi-stage crushing system for particulate materials, which includes a casing, wherein a primary crushing mechanism 10 and a secondary crushing mechanism 20 are respectively fixed on the left and right sides of the upper inner part of the casing, the setting position of the secondary crushing mechanism 20 is lower than the setting position of the primary crushing mechanism 10, and a tertiary crushing mechanism 30 is fixed at the lower inner part of the casing and between the primary crushing mechanism 10 and the secondary crushing mechanism 20, and the feed port of the primary crushing mechanism 10 is connected to the top of the casing. Specifically, the feed port of the primary crushing mechanism 10 can protrude from the top of the casing, and can also be flush with the opening at the top of the casing, and the discharge port of the tertiary crushing mechanism 30 is connected to the total discharge port at the bottom of the casing.

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

[0031] Among them, the primary conveying mechanism 50 includes an inclined loader arranged obliquely upward from left to right.

[0032] The primary grading material guiding mechanism 40 includes a first vibrating grading screen plate 41, a second vibrating grading screen plate 42 and a third guide plate 43 which are fixed at the discharge port of the primary crushing mechanism 10 and are spaced apart from top to bottom, and also includes a first energy-saving vibration motor 44, a second energy-saving vibration motor 45 and a third energy-saving vibration motor 46 which are fixed at the discharge port of the primary crushing mechanism 10.

[0033] The first vibration grading screen plate 41 is tilted downward from left to right, the second vibration grading screen plate 42 is tilted downward from left to right, and the third export plate 43 is tilted downward from left to right; the inclination angle of the third export plate 43 is greater than the inclination angle of the second vibration grading screen plate 42, which is greater than the inclination angle of the first vibration grading screen plate 41.

[0034] The first vibration grading screen plate 41 is provided with a plurality of first screen holes, and the second vibration grading screen plate 42 is provided with a plurality of second screen holes. The inner diameter of the first screen holes is greater than the inner diameter of the second screen holes.

[0035] The lowest point of the first vibrating grading screen plate 41 is connected to one end of the primary conveying mechanism 50, the lowest point of the second vibrating grading screen plate 42 is connected to the feed port of the tertiary crushing mechanism 30, and the lowest point of the third lead-out plate 43 is connected to the main discharge port.

[0036] The first energy-saving vibration motor 44 contacts the bottom of the first vibration grading screen plate 41 , the second energy-saving vibration motor 45 contacts the bottom of the second vibration grading screen plate 42 , and the third energy-saving vibration motor 46 contacts the bottom of the third derivation plate 43 .

[0037] In this embodiment, a secondary grading material guiding mechanism 60 is fixed at the discharge port of the secondary crushing mechanism 20 , and the secondary grading material guiding mechanism 60 is respectively connected to the feed port and the main discharge port of the tertiary crushing mechanism 30 .

[0038] Among them, the secondary grading material guiding mechanism 60 includes an upper vibrating grading screen plate 61 and a lower guide plate 62 fixed at the discharge port of the secondary crushing mechanism 20, which are arranged in sequence from top to bottom, and also includes an upper energy-saving vibration motor 63 and a lower energy-saving vibration motor 64 fixed at the discharge port of the secondary crushing mechanism 20.

[0039] The upper vibration grading screen plate 61 is tilted downward from right to left, and the lower guide plate 62 is tilted downward from right to left. The tilt angle of the lower guide plate 62 is greater than the tilt angle of the upper vibration grading screen plate 61 .

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

[0041] The lowest point of the upper vibrating grading screen plate 61 is connected to the feed port of the three-stage crushing mechanism 30, and the lowest point of the lower lead-out plate 62 is connected to the main discharge port.

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

[0043] In this embodiment, the primary crushing mechanism 10 includes a primary crushing cavity 11, in which two primary crushing rollers 12 are installed; the secondary crushing mechanism 20 includes a secondary crushing cavity 21, in which two secondary crushing rollers 22 are installed; the tertiary crushing mechanism 30 includes a tertiary crushing cavity 31, in which two tertiary crushing rollers 32 are installed; the distance between the two primary crushing rollers 12 is greater than the distance between the two secondary crushing rollers 22, and the distance between the two secondary crushing rollers 22 is greater than the distance between the two tertiary crushing rollers 32. By adjusting the distance between the crushing rollers of different levels, the step-by-step refinement of different crushing particle sizes is achieved.

[0044] The multi-stage crushing system also includes a main controller, which is fixed on the outer wall of the casing or is separated from the casing.

[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 start in sequence after receiving a crushing instruction.

[0046] 1. Control the primary crushing mechanism 10 to perform primary crushing operation on the incoming granular materials. The granular materials after primary crushing enter the primary grading material guiding mechanism 40. Control the primary grading material guiding mechanism 40 to screen out large granular materials and transport them to the secondary crushing mechanism 20 through the primary conveying mechanism 50, screen out medium granular materials and transport them to the tertiary crushing mechanism 30, and screen out small granular materials and directly transport them to the main discharge port. Specifically, the first energy-saving vibration motor 44 is controlled to vibrate, and the first energy-saving vibration motor 44 drives the first vibration grading screen plate 41 to vibrate accordingly, so that the medium-grained materials and small-grained materials on the first vibration grading screen plate 41 pass through the first sieve hole and fall onto the second vibration grading screen plate 42, and the large-grained materials are transported to the secondary crushing mechanism 20 through the primary 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 vibration grading screen plate 42 to vibrate accordingly, so that the small-grained materials on the second vibration grading screen plate 42 pass through the second sieve hole and fall onto the third export plate 43, and the medium-grained materials are transported to the tertiary 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 export plate 43 to vibrate accordingly, so that the small-grained materials on the third export plate 43 directly slide into the total discharge port.

[0047] Second, the secondary crushing mechanism 20 is controlled to perform secondary crushing operation on the incoming large particle materials, and the particle materials after secondary crushing enter the secondary grading material guiding mechanism 60, and the secondary grading material guiding mechanism 60 is controlled to screen out small particle materials and directly transport them to the general discharge port, and the remaining particle materials are all transported to the tertiary 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 vibration grading screen plate 61 to vibrate accordingly, so that the small particle materials on the upper vibration grading screen plate 61 pass through the upper sieve holes and fall onto the lower outlet plate 64, and the remaining particle materials are all transported to the tertiary crushing mechanism 30, and the lower energy-saving vibration motor 64 is controlled to vibrate, and the lower energy-saving vibration motor 64 drives the lower outlet plate 64 to vibrate accordingly, so that the small particle materials on the lower outlet plate 64 directly slide into the general discharge port.

[0048] 3. Control the three-stage crushing mechanism 30 to perform three-stage crushing operation on the incoming granular material and send it to the main discharge port through the discharge port of the three-stage crushing mechanism 30.

[0049] This embodiment facilitates step-by-step screening according to different particle sizes. After the primary crushing, small particles are directly screened to the main discharge port, medium particles are screened to the third crushing, and large particles are screened to the second crushing; after the second crushing, small particles are directly screened to the main discharge port, and the remaining particles are screened to the third crushing for third crushing; after the third crushing, all particles enter the main discharge port.

[0050] Small particle materials refer to particle materials with relatively small sizes, large particle materials refer to particle materials with relatively large sizes, and medium particle materials refer to particle materials with relatively medium sizes.

[0051] In this embodiment, the cooling function of the primary crushing mechanism 10 and the function of increasing the brittleness of the granular material therein are realized. Specifically, a primary infrared temperature sensor 13 is installed in the primary crushing cavity 11, a primary liquid nitrogen inlet 14 for introducing liquid nitrogen is provided on the primary crushing cavity 11, a primary electric control valve is provided on the primary liquid nitrogen inlet 14 and outside the primary crushing cavity 11, a primary vent is also provided on the primary crushing cavity 11, and a vent corresponding to the primary vent is also provided on the casing. The primary infrared temperature sensor 13 is used to sense the primary temperature in the primary crushing cavity 11, and the main controller is used to determine whether the primary temperature is greater than the first set temperature. When it is, the primary electric control valve is controlled to open, so that liquid nitrogen enters the primary crushing cavity 11 for cooling, until the primary temperature is not greater than the first set temperature, the primary electric control valve is controlled to close, and during the cooling process, liquid nitrogen becomes nitrogen, and the nitrogen is dispersed through the primary vent and the vent corresponding to the primary vent on the casing, so as to prevent the primary crushing cavity 11 or the casing from being filled with nitrogen and causing danger.

[0052] In this embodiment, the cooling function of the secondary crushing mechanism 20 and the function of increasing the brittleness of the granular material therein are realized. Specifically, a secondary infrared temperature sensor 23 is installed in the secondary crushing cavity 21, a secondary liquid nitrogen inlet 24 for introducing liquid nitrogen is provided on the secondary crushing cavity 21, a secondary electric control valve is provided on the secondary liquid nitrogen inlet 24 and outside the secondary crushing cavity 21, a secondary vent is also provided on the secondary crushing cavity 21, and a vent corresponding to the secondary vent is also provided on the casing. The secondary infrared temperature sensor 23 is used to sense the secondary temperature in the secondary crushing cavity 21, and the main controller is used to determine whether the secondary temperature is greater than the second set temperature. When it is, the secondary electric control valve is controlled to open, so that liquid nitrogen enters the secondary crushing cavity 21 for cooling, until the secondary temperature is not greater than the second set temperature, the secondary electric control valve is controlled to close, and during the cooling process, liquid nitrogen becomes nitrogen, and the nitrogen is dispersed through the secondary vent and the vent corresponding to the secondary vent on the casing, so as to prevent the danger caused by the secondary crushing cavity 21 or the casing being filled with nitrogen.

[0053] In this embodiment, the temperature reduction function of the three-stage crushing mechanism 30 and the function of increasing the brittleness of the granular material therein are realized. Specifically, a three-stage infrared temperature sensor 33 is installed in the three-stage crushing cavity 31, a three-stage liquid nitrogen inlet 34 for introducing liquid nitrogen is provided on the three-stage crushing cavity 31, a three-stage electric control valve is provided on the three-stage liquid nitrogen inlet 34 and outside the three-stage crushing cavity 31, three-stage vent holes are also provided on the three-stage crushing cavity 31, and vent holes corresponding to the three-stage vent holes are also provided on the casing. The three-stage infrared temperature sensor 33 is used to sense the three-stage temperature in the three-stage crushing cavity 31. The main controller is used to determine whether the three-stage temperature is greater than the third set temperature. If it is, the three-stage electric control valve is controlled to open, so that liquid nitrogen enters the three-stage crushing cavity 31 for cooling. When the three-stage temperature is not greater than the third set temperature, the three-stage electric control valve is controlled to close. During the cooling process, the liquid nitrogen turns into nitrogen gas, and the nitrogen gas is released through the three-stage vent holes and the vent holes on the casing corresponding to the three-stage vent holes, so as to prevent the danger caused by the three-stage crushing cavity 31 or the casing being filled with nitrogen.

[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 by crushing is absorbed, and the particle material can be cooled at the same time, the brittleness of the particle material is increased, and the crushing effect is improved.

[0055] In this embodiment, the dust adsorption function at the first-level grading material guiding mechanism 40 is realized. Specifically, the housing includes a first-level material guiding channel 70 covering the outside of the first-level grading material guiding mechanism 40, a first-level dust concentration sensor 71 is installed in the first-level material guiding channel 70, a first-level air intake port 72 is opened on the top plate of the first-level material guiding channel 70, the first-level air intake port 72 is connected to the external first-level bag through the external first-level air intake channel, and a first-level air suction pump is installed on the first-level air intake channel. The first-level dust concentration sensor 71 is used to detect the first-level dust concentration in the first-level material guiding channel 70, and the main controller is used to determine whether the first-level dust concentration is greater than the first set dust concentration. If it is, the first-level air suction pump is controlled to start, and the dust in the first-level material guiding channel 70 is sucked into the first-level bag until the first-level dust concentration is not greater than the first set dust concentration, and the first-level air suction pump is controlled to be closed.

[0056] In this embodiment, the dust adsorption function at the secondary graded material guiding mechanism 60 is realized. Specifically, the housing includes a secondary material guiding channel 80 covering the outside of the secondary graded material guiding mechanism 60, a secondary dust concentration sensor is installed in the secondary material guiding channel 80, a secondary air intake port 81 is opened on the top plate of the secondary material guiding channel 80, the secondary air intake port 81 is connected to the external secondary bag through the external secondary air intake channel, and a secondary air suction pump is installed on the secondary air intake channel. The secondary dust concentration sensor is used to detect the secondary dust concentration in the secondary material guiding channel 80, and the main controller is used to determine whether the secondary dust concentration is greater than the second set dust concentration. If it is, the secondary air suction pump is controlled to start, and the dust in the secondary material guiding channel 80 is sucked into the secondary bag until the secondary dust concentration is not greater than the second set dust concentration, and the secondary air suction pump is controlled to be closed.

[0057] In this 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 invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An energy-efficient multi-stage crushing system for granular materials, characterized in that: It comprises a casing, wherein a primary crushing mechanism and a secondary crushing mechanism are respectively fixed on the left and right sides of the upper inner part of the casing, and a tertiary crushing mechanism is fixed on the lower inner part of the casing and located between the primary crushing mechanism and the secondary crushing mechanism, wherein the feed port of the primary crushing mechanism is connected to the top of the casing, and the discharge port of the tertiary crushing mechanism is connected to the total discharge port at the bottom of the casing; A first-level grading material guiding mechanism is fixed at the discharge port of the first-level crushing mechanism, and a first-level conveying mechanism is fixed in the casing and close to the second-level crushing mechanism. The first-level grading material guiding mechanism is respectively connected to one end of the first-level conveying mechanism, the feed port and the total discharge port of the third-level crushing mechanism, and the other end of the first-level conveying mechanism is connected to the feed port of the second-level crushing mechanism; A secondary grading material guiding mechanism is fixed at the discharge port of the secondary crushing mechanism, and the secondary grading material guiding mechanism is respectively connected to the feed port and the main discharge port of the tertiary crushing mechanism; The multi-stage crushing system also includes a main controller, which is used to control the first-level crushing mechanism, the first-level grading and guiding mechanism, the first-level conveying mechanism, the second-level crushing mechanism, the second-level grading and guiding mechanism and the third-level crushing mechanism to start in sequence after receiving a crushing instruction, control the first-level crushing mechanism to perform a first-level crushing operation on the incoming granular material, control the first-level grading and guiding mechanism to screen out large granular materials and transport them to the second-level crushing mechanism through the first-level conveying mechanism, screen out medium granular materials and transport them to the third-level crushing mechanism, screen out small granular materials and directly transport them to the total discharge port, control the second-level crushing mechanism to perform a second-level crushing operation on the incoming large granular materials, control the second-level grading and guiding mechanism to screen out small granular materials and directly transport them to the total discharge port, and transport the remaining granular materials to the third-level crushing mechanism, and control the third-level crushing mechanism to perform a third-level crushing operation on the incoming granular materials and transport them to the total discharge port through the discharge port of the third-level crushing mechanism.

2. The energy-efficient multi-stage crushing system for particulate materials according to claim 1, characterized in that: The primary grading material guiding mechanism comprises a first vibrating grading screen plate, a second vibrating grading screen plate and a third guide plate which are fixed at the material outlet of the primary crushing mechanism and are arranged at intervals from top to bottom, and also 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 material outlet of the primary crushing mechanism; The first vibration grading screen plate is arranged to be tilted downward from left to right, the second vibration grading screen plate is arranged to be tilted downward from left to right, and the third derivation plate is arranged to be tilted downward from left to right; The first vibration grading screen plate is provided with a plurality of first screen holes, the second vibration grading screen plate is provided with a plurality of second screen holes, and the inner diameter of the first screen holes is greater than the inner diameter of the second screen holes; The lowest point of the first vibrating grading screen plate is connected to one end of the primary conveying mechanism, the lowest point of the second vibrating grading screen plate is connected to the feed port of the tertiary crushing mechanism, and the lowest point of the third outlet plate is connected to the main discharge port; The first energy-saving vibration motor is in contact with the bottom of the first vibration grading screen plate, the second energy-saving vibration motor is in contact with the bottom of the second vibration grading screen plate, and the third energy-saving vibration motor is in contact with the bottom of the third derivation plate; The main controller is used to control the vibration of the first energy-saving vibration motor, and the first energy-saving vibration motor drives the first vibration grading screen plate to vibrate accordingly, so that the medium-grained materials and small-grained materials on the first vibration grading screen plate fall onto the second vibration grading screen plate through the first sieve hole, and the large-grained materials are transported to the secondary crushing mechanism through the primary conveying mechanism; control the vibration of the second energy-saving vibration motor, and the second energy-saving vibration motor drives the second vibration grading screen plate to vibrate accordingly, so that the small-grained materials on the second vibration grading screen plate fall onto the third export plate through the second sieve hole, and the medium-grained materials are transported to the tertiary crushing mechanism; control the vibration of the third energy-saving vibration motor, and the third energy-saving vibration motor drives the third export plate to vibrate accordingly, so that the small-grained materials on the third export plate directly slide into the total discharge port.

3. The energy-efficient multi-stage crushing system for particulate materials according to claim 2, characterized in that: The inclination angle of the third derivation plate is greater than the inclination angle of the second vibration grading screen plate, which is greater than the inclination angle of the first vibration grading screen plate.

4. The energy-efficient multi-stage crushing system for particulate materials according to claim 2, characterized in that: The secondary grading material guiding mechanism comprises an upper vibrating grading screen plate and a lower guide plate fixed at the discharge port of the secondary crushing mechanism and arranged at intervals from top to bottom, and also comprises an upper energy-saving vibration motor and a lower energy-saving vibration motor fixed at the discharge port of the secondary crushing mechanism; The upper vibration grading screen plate is arranged to be tilted downward from right to left, and the lower guide plate is arranged to be tilted downward from right to left; The upper vibrating grading screen plate is provided with a plurality of upper screen holes, and the inner diameter of the upper screen holes is the same as the inner diameter of the second screen holes; The lowest point of the upper vibrating grading screen plate is connected to the feed port of the three-stage crushing mechanism, and the lowest point of the lower lead-out plate is connected to the main discharge port; The upper energy-saving vibration motor is in contact with the bottom of the upper vibration grading screen plate, and the lower energy-saving vibration motor is in contact with the bottom of the lower derivation plate; The main controller is used to control the vibration of the upper energy-saving vibration motor, which drives the upper vibration grading screen plate to vibrate accordingly, so that the small particle materials on the upper vibration grading screen plate fall through the upper sieve holes onto the lower lead-out plate, and the remaining particle materials are transported to the tertiary crushing mechanism, and controls the vibration of the lower energy-saving vibration motor, which drives the lower lead-out plate to vibrate accordingly, so that the small particle materials on the lower lead-out plate directly slide into the total discharge port.

5. The energy-efficient multi-stage crushing system for particulate materials according to claim 4, characterized in that: The inclination angle of the lower outlet plate is greater than the inclination angle of the upper vibration grading screen plate.

6. The energy-efficient multi-stage crushing system for particulate materials according to claim 1, characterized in that: The primary crushing mechanism comprises a primary crushing cavity, a primary infrared temperature sensor is installed in the primary crushing cavity, a primary liquid nitrogen inlet for introducing liquid nitrogen is provided on the primary crushing cavity, a primary electric control valve is provided on the primary liquid nitrogen inlet and outside the primary crushing cavity, a primary vent hole is also provided on the primary crushing cavity, and a vent hole corresponding to the primary vent hole is also provided on the casing; The secondary crushing mechanism comprises a secondary crushing cavity, a secondary infrared temperature sensor is installed in the secondary crushing cavity, a secondary liquid nitrogen inlet for introducing liquid nitrogen is provided on the secondary crushing cavity, a secondary electric control valve is provided on the secondary liquid nitrogen inlet and outside the secondary crushing cavity, a secondary vent hole is also provided on the secondary crushing cavity, and a vent hole corresponding to the secondary vent hole is also provided on the casing; The three-stage crushing mechanism comprises a three-stage crushing cavity, a three-stage infrared temperature sensor is installed in the three-stage crushing cavity, a three-stage liquid nitrogen inlet for introducing liquid nitrogen is provided on the three-stage crushing cavity, a three-stage electric control valve is provided on the three-stage liquid nitrogen inlet and outside the three-stage crushing cavity, the three-stage crushing cavity is also provided with three-stage vent holes, and the casing is also provided with vent holes corresponding to the three-stage vent holes; The primary infrared temperature sensor is used to sense the primary temperature in the primary crushing chamber, and the main controller is used to determine whether the primary temperature is greater than the first set temperature. If so, the primary electric control valve is controlled to open, so that liquid nitrogen enters the primary crushing chamber for cooling, and the primary electric control valve is controlled to close until the primary temperature is no greater than the first set temperature. The secondary infrared temperature sensor is used to sense the secondary temperature in the secondary crushing chamber, and the main controller is used to determine whether the secondary temperature is greater than the second set temperature. If so, the secondary electric control valve is controlled to open, so that liquid nitrogen enters the secondary crushing chamber for cooling, and the secondary electric control valve is controlled to close until the secondary temperature is no greater than the second set temperature. The three-stage infrared temperature sensor is used to sense the three-stage temperature in the three-stage crushing chamber, and the main controller is used to determine whether the three-stage temperature is greater than the third set temperature. If it is, the three-stage electric control valve is controlled to open, so that liquid nitrogen enters the three-stage crushing chamber for cooling, until the three-stage temperature is no greater than the third set temperature, then the three-stage electric control valve is controlled to close.

7. The energy-efficient multi-stage crushing system for particulate materials according to claim 6, characterized in that: Two primary crushing rollers are installed in the primary crushing chamber, two secondary crushing rollers are installed in the secondary crushing chamber, and two tertiary crushing rollers are installed in the tertiary crushing chamber; The distance between the two primary crushing rollers is greater than the distance between the two secondary crushing rollers, and the distance between the two secondary crushing rollers is greater than the distance between the two tertiary crushing rollers.

8. The energy-efficient multi-stage crushing system for particulate materials according to claim 1, characterized in that: The housing includes a primary material guiding channel wrapped around the outside of the primary graded material guiding mechanism, a primary dust concentration sensor is installed in the primary material guiding channel, a primary air intake port is opened on the top plate of the primary material guiding channel, the primary air intake port is connected to an external primary bag through an external primary air intake channel, and a primary air pump is installed on the primary air intake channel; The housing includes a secondary material guide channel wrapped around the outside of the secondary graded material guide mechanism, a secondary dust concentration sensor is installed in the secondary material guide channel, a secondary air intake port is opened on the top plate of the secondary material guide channel, the secondary air intake port is connected to an external secondary bag through an external secondary air intake channel, and a secondary air pump is installed on the secondary air intake channel; The primary dust concentration sensor is used to detect the primary dust concentration in the primary material guide channel, and the main controller is used to determine whether the primary dust concentration is greater than the first set dust concentration. If it is, the primary suction pump is controlled to start to absorb the dust in the primary material guide channel until the primary dust concentration is not greater than the first set dust concentration, then the primary suction pump is controlled to close; The secondary dust concentration sensor is used to detect the secondary dust concentration in the secondary material guide channel, and the main controller is used to determine whether the secondary dust concentration is greater than the second set dust concentration. If it is, the secondary air suction pump is controlled to turn on to absorb the dust in the secondary material guide channel until the secondary dust concentration is no greater than the second set dust concentration, then the secondary air suction pump is controlled to turn off.

9. The energy-efficient multi-stage crushing system for particulate materials according to claim 1, characterized in that: The primary conveying mechanism includes an inclined feeder arranged upwardly and obliquely from left to right, and the main controller is fixed on the outer wall of the casing or is arranged separately from the casing.

10. The energy-efficient multi-stage crushing system for particulate materials according to claim 1, characterized in that: The feed opening of the primary crushing mechanism protrudes from the top of the casing or is flush with the opening of the top of the casing, and the setting position of the secondary crushing mechanism is lower than the setting position of the primary crushing mechanism.

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