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CN-122006852-A - Raw material crushing and grinding equipment and method for biscuit production

CN122006852ACN 122006852 ACN122006852 ACN 122006852ACN-122006852-A

Abstract

The invention relates to the technical field of food processing machinery, and discloses raw material crushing and grinding equipment and method for biscuit production. The raw material crushing and grinding equipment for biscuit production comprises an equipment main body, a crushing mechanism, a blockage cleaning mechanism and a controller, wherein a crushing chamber is arranged in the equipment main body, a discharge hopper is arranged below the crushing chamber, and the crushing mechanism is arranged in the crushing chamber and comprises a rotor rotatably installed in the crushing chamber, a plurality of groups of hammer sheets installed on the rotor, a screen mesh surrounding the periphery of the rotor and a rotary driving assembly. The blockage cleaning mechanism provided by the invention can realize accurate positioning and targeted cleaning of a screen blockage area, the pressure difference value change of each static pressure cavity is captured in real time through the pressure difference monitoring unit, the controller can quickly lock the blockage partition, the telescopic scraping blade component at the corresponding position is driven to extend out and scrape in a specific angle range, and the telescopic scraping blade component is contracted and reset immediately after cleaning is finished, so that the abrasion of the scraping blade and the screen is greatly reduced.

Inventors

  • WANG QINZHI
  • Hao na

Assignees

  • 科丝美特生物科技(白山)有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (10)

  1. 1. The raw material crushing and grinding equipment for biscuit production is characterized by comprising an equipment main body, a crushing mechanism, a blockage cleaning mechanism and a controller; A crushing chamber is arranged in the equipment main body, and a discharge hopper is arranged below the crushing chamber; The crushing mechanism is arranged in the crushing chamber and comprises a rotor rotatably arranged in the crushing chamber, a plurality of groups of hammer sheets arranged on the rotor, a screen mesh surrounding the periphery of the rotor and a rotary driving assembly; The blockage cleaning mechanism comprises a differential pressure monitoring unit and a cleaning unit; The differential pressure monitoring unit comprises a static pressure bin arranged at the outer side of the screen, a plurality of independent static pressure cavities which are uniformly distributed along the axial direction of the rotor are arranged in the static pressure bin, each static pressure cavity is communicated with the corresponding area at the outer side of the screen in a sealing way, and a micro differential pressure sensor is arranged in each static pressure cavity; The cleaning unit comprises a plurality of telescopic scraping blade assemblies which are integrally arranged on the rotor along the axial direction, the axial position of each telescopic scraping blade assembly corresponds to one static pressure cavity, and each telescopic scraping blade assembly is provided with a first working position which is contracted to be far away from the inner wall of the screen and a second working position which is extended to be in contact with the inner wall of the corresponding screen; The controller is electrically connected with the micro-pressure difference sensor and the telescopic scraping blade assembly respectively and is configured to: Acquiring a real-time pressure difference value of each static pressure cavity; Judging whether a blocking partition exists or not and locking the number of the blocking partition according to the comparison result of the real-time pressure difference value and the preset reference pressure difference value; Acquiring a real-time rotation angle of a rotor; when the telescopic scraping blade assembly corresponding to the blocking partition number rotates along with the rotor to enter the screen area, the telescopic scraping blade assembly is controlled to extend from the first working position to the second working position, and the blocking screen partition is scraped and cleaned; The telescoping blade assembly is controlled to retract from the second operating position back to the first operating position as the telescoping blade assembly rotates with the rotor to leave the screen area.
  2. 2. The apparatus of claim 1, wherein the telescoping blade assembly comprises a sealing guide fixed to the rotor, a blade body slidably mounted on the sealing guide, and a telescoping drive member mounted in the sealing guide, the telescoping drive member being configured to drive the blade body to extend from the first working position to the second working position.
  3. 3. The raw material pulverizing and grinding device for biscuit production according to claim 2, wherein the telescopic driving member comprises an electromagnetic driving device and a return spring sleeved on the doctor blade body, and the return spring is used for driving the doctor blade body to return from the second working position to the first working position after the electromagnetic driving device is powered off.
  4. 4. A biscuit manufacturing raw material pulverizing mill according to claim 3, wherein the preload of the return spring is greater than 1.5 times the centrifugal force to which the doctor blade body is subjected at the maximum rotational speed of the rotor.
  5. 5. The raw material pulverizing and grinding device for biscuit production according to claim 2, wherein the end part of the doctor blade body is provided with an arc-shaped cutting edge matched with the screen mesh, and the arc-shaped cutting edge is provided with a comb-shaped structure corresponding to the hole position of the screen mesh.
  6. 6. The raw material pulverizing and grinding device for biscuit production according to claim 1, wherein the static pressure bin is divided into a plurality of independent static pressure chambers by a plurality of axial partition plates, a discharging hole which is gradually narrowed from top to bottom is arranged at the bottom of each static pressure chamber, and the discharging hole is communicated with a discharging hopper below.
  7. 7. The raw material pulverizing and grinding apparatus for biscuit production according to claim 1, wherein the controller includes an absolute value encoder provided on the rotor for acquiring a real-time rotation angle of the rotor and transmitting the same to the controller.
  8. 8. The biscuit manufacturing feedstock pulverizing mill of claim 1, wherein the controller is further configured to: dividing the blockage grade according to the comparison result of the real-time pressure difference value and the preset reference pressure difference value; when the real-time differential pressure value exceeds a first preset threshold value, controlling the corresponding telescopic scraping blade to execute a first number of scraping actions; When the real-time differential pressure value exceeds a second preset threshold value higher than the first preset threshold value, the corresponding telescopic scraping blade is controlled to execute scraping actions for more than the first times, and the rotary driving assembly is controlled to reduce the feeding speed.
  9. 9. A method of controlling clogging using the raw material crushing and pulverizing apparatus for biscuit production as claimed in any one of claims 1 to 7, characterized by comprising the steps of: S1, real-time monitoring, namely acquiring a real-time differential pressure value Pi of each static pressure cavity through a differential pressure monitoring unit, and acquiring a real-time rotation angle of a rotor through an encoder; S2, judging that the static pressure chambers are blocked if the real-time pressure difference value Pi of each static pressure chamber is compared with a preset reference pressure difference value P0, and if any Pi is more than or equal to P0×K, wherein K is a blocking judgment coefficient larger than 1, judging that the static pressure chambers are blocked, and locking blocking partition numbers; s3, targeting positioning, namely matching the telescopic scraping blade corresponding to the axial position of the hydrostatic cavity according to the locked blocking partition number; s4, performing angle interlocking and blockage removal, namely controlling the telescopic scraping blade to extend from a first working position to a second working position according to the real-time rotation angle of the rotor when the telescopic scraping blade corresponding to the blockage partition rotates along with the rotor to enter a screen area to be cleaned, enabling the telescopic scraping blade to contact with the inner wall of the blockage screen partition and scraping the inner wall of the blockage screen area; S5, effect evaluation and resetting, namely acquiring a real-time pressure difference value Pi of the static pressure cavity again after the blockage removal action is finished, if Pi is recovered to a normal range, completing blockage removal, and if Pi is still higher than a blockage judgment threshold value, repeatedly executing the step S4 until blockage removal is successful or a preset alarm condition is triggered.
  10. 10. The method according to claim 9, wherein the blockage judging factor K in the step S2 comprises a first factor K1 and a second factor K2, and K2> K1>1, and in the step S4, when Pi is greater than or equal to P0×K2, the corresponding telescopic scraping blade is controlled to execute a plurality of scraping operations, and a deceleration signal is synchronously output to the rotary driving assembly, so that the feeding speed is reduced.

Description

Raw material crushing and grinding equipment and method for biscuit production Technical Field The invention relates to the technical field of food processing machinery, in particular to a device and a method for crushing and grinding raw materials for biscuit production. Background In the biscuit production process, high oil nut raw materials such as walnut, almond and the like are generally required to be ground into powder. At present, a hammer mill is a common raw material crushing and grinding device. However, the conventional crushing equipment has a common problem in practical application that grease and fine powder easily form oil sludge after crushing the high-oil-content raw material, and the oil sludge is attached to the mesh holes of the semicircular screen, so that the screen is blocked. If the screen is seriously blocked, the screening efficiency is drastically reduced, the granularity of the product is uneven, and the productivity is remarkably reduced. In the prior art, there are two main conventional solutions to the problem of screen blockage. The manual cleaning is carried out after the machine is stopped, the production continuity is seriously affected, the labor intensity is high, and the integral scraping type blockage removing mechanism is arranged around the filter screen and scrapes on the surface of the filter screen by driving the scraper to remove blockage. Although the blocking problem can be effectively solved by the method, in the scraping cleaning process, the scraping blade is in full-range large-area contact with the screen, and more ineffective contact exists at the position where the screen is not blocked, so that the scraping blade and the screen are worn out more quickly. Disclosure of Invention The invention aims to provide a device and a method for crushing and grinding raw materials for biscuit production, which solve the technical problems. The invention solves the technical problems by the following technical proposal: In a first aspect, the invention provides a raw material crushing and grinding device for biscuit production, which comprises a device main body, a crushing mechanism, a blockage cleaning mechanism and a controller; A crushing chamber is arranged in the equipment main body, and a discharge hopper is arranged below the crushing chamber; The crushing mechanism is arranged in the crushing chamber and comprises a rotor rotatably arranged in the crushing chamber, a plurality of groups of hammer sheets arranged on the rotor, a screen mesh surrounding the periphery of the rotor and a rotary driving assembly; The blockage cleaning mechanism comprises a differential pressure monitoring unit and a cleaning unit; The differential pressure monitoring unit comprises a static pressure bin arranged at the outer side of the screen, a plurality of independent static pressure cavities which are uniformly distributed along the axial direction of the rotor are arranged in the static pressure bin, each static pressure cavity is communicated with the corresponding area at the outer side of the screen in a sealing way, and a micro differential pressure sensor is arranged in each static pressure cavity; The cleaning unit comprises a plurality of telescopic scraping blade assemblies which are integrally arranged on the rotor along the axial direction, the axial position of each telescopic scraping blade assembly corresponds to one static pressure cavity, and each telescopic scraping blade assembly is provided with a first working position which is contracted to be far away from the inner wall of the screen and a second working position which is extended to be in contact with the inner wall of the corresponding screen; The controller is electrically connected with the micro-pressure difference sensor and the telescopic scraping blade assembly respectively and is configured to: Acquiring a real-time pressure difference value of each static pressure cavity; Judging whether a blocking partition exists or not and locking the number of the blocking partition according to the comparison result of the real-time pressure difference value and the preset reference pressure difference value; Acquiring a real-time rotation angle of a rotor; when the telescopic scraping blade assembly corresponding to the blocking partition number rotates along with the rotor to enter the screen area, the telescopic scraping blade assembly is controlled to extend from the first working position to the second working position, and the blocking screen partition is scraped and cleaned; The telescoping blade assembly is controlled to retract from the second operating position back to the first operating position as the telescoping blade assembly rotates with the rotor to leave the screen area. Preferably, the telescopic scraping blade assembly comprises a sealing guide seat fixed on the rotor, a scraping blade body arranged on the sealing guide seat in a sliding manner and a telescopic driving piece arranged