Feed expansion system and working method thereof

Abstract

The present invention belongs to the field of feed processing technology, and specifically relates to a feed puffing system and a working method thereof. The system comprises: a feed puffing system, which comprises: an up-suction fluid pulverizer, used for pulverizing raw materials and removing foreign matter; a mixing box, used for receiving the raw materials pulverized by the up-suction fluid pulverizer, and modulating and mixing the raw materials with auxiliary materials; a spiral extrusion mechanism, used for receiving the raw materials mixed by the mixing box; and a positive pressure density controller, which is covered at the discharge port of the spiral extrusion mechanism; wherein the spiral extrusion mechanism is suitable for squeezing the received raw materials into the positive pressure density controller for puffing, and the system adjusts the pressure at the discharge port of the spiral extrusion mechanism through the positive pressure density controller, so that there is a pressure difference between the pressure in the positive pressure density controller and the pressure in the spiral extrusion mechanism, thereby realizing the function of puffing the raw materials after entering the positive pressure density controller.

Description

Technical Field

[0001] The invention belongs to the technical field of feed processing, and in particular relates to a feed puffing system and a working method thereof. Background Art

[0002] Feed extruders are mainly used for food extrusion, livestock and poultry feed, or for extruding single raw materials.

[0003] During the puffing process of fish feed, raw materials are subjected to high temperature and high pressure before being instantly introduced into a low-pressure zone for puffing. By adjusting the pressure difference between the two zones, fish feed with varying degrees of puffing can be produced to meet the needs of different fish species and fish farms. Existing feed puffers deliver pressurized raw materials into a negative-pressure zone for puffing. However, this negative-pressure vacuuming method causes temperature and humidity loss within the pressurizing mechanism. At a given puffing degree, the raw materials cannot be heated sufficiently and remain humid. Consequently, some raw materials that require high temperature cooking cannot be cooked without this loss of temperature and humidity. Furthermore, the puffing of fish feed places high demands on the raw material's coarseness and impurity content. Existing devices, when encountering foreign matter during the raw material processing process, must shut down and remove the foreign matter, making continuous production difficult.

[0004] Therefore, based on the above problems, it is necessary to design a feed puffing system and a working method thereof that can ensure the temperature and humidity of the raw materials during puffing and can continuously provide raw materials with impurities removed, which is an urgent problem to be solved by technicians in this field. Summary of the Invention

[0005] The purpose of the present invention is to provide a feed puffing system and a working method thereof.

[0006] In order to solve the above technical problems, the present invention provides a feed puffing system, which includes: an up-suction fluid pulverizer for pulverizing raw materials and removing foreign matter; a mixing box for receiving the raw materials pulverized by the up-suction fluid pulverizer and mixing the raw materials with auxiliary materials; a spiral extrusion mechanism for receiving the raw materials mixed by the mixing box; and a positive pressure density controller, which is covered at the discharge port of the spiral extrusion mechanism; wherein the spiral extrusion mechanism is suitable for squeezing the received raw materials into the positive pressure density controller for puffing.

[0007] On the other hand, the present invention also provides a working method of the feed puffing system as described above, which includes: crushing the raw materials and removing foreign matter by an up-suction fluid pulverizer; receiving the raw materials crushed by the up-suction fluid pulverizer by a mixing box, and modulating and mixing the raw materials with auxiliary materials; receiving the raw materials mixed in the mixing box by a spiral extrusion mechanism and squeezing them into a positive pressure density controller for puffing.

[0008] The beneficial effect of the present invention is that the present invention adjusts the pressure at the discharge port of the spiral extrusion mechanism through the positive pressure density controller, so that there is a pressure difference between the pressure inside the positive pressure density controller and the pressure inside the spiral extrusion mechanism, thereby realizing the function of expanding the raw material after entering the positive pressure density controller; at the same time, by adjusting the pressure of the positive pressure density controller to change the pressure difference between the positive pressure density controller and the spiral extrusion mechanism, the function of adjusting the different expansion degrees of the raw material is realized; compared with the existing adjustment method using negative pressure vacuum extraction, this embodiment uses a positive pressure density controller to perform positive pressure adjustment on the pressure at the discharge port of the spiral extrusion mechanism, so that when obtaining raw materials with the required expansion degree, the pressure inside the spiral extrusion mechanism can be increased to ensure that the temperature and humidity in the spiral extrusion mechanism will not be lost, thereby improving the expansion effect of the raw material.

[0009] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0010] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a structural schematic diagram of the feed puffing system of the present invention;

[0013] Figure 2 It is a schematic structural diagram of a mixing box of the present invention;

[0014] Figure 3 It is a schematic cross-sectional view of the spiral extrusion mechanism of the present invention;

[0015] Figure 4 It is a structural schematic diagram of the upward suction fluid pulverizer of the present invention;

[0016] Figure 5 It is a schematic cross-sectional structural diagram of the upward suction type fluid pulverizer of the present invention;

[0017] Figure 6 is a schematic cross-sectional view of the stator of the driving mechanism of the present invention after movement;

[0018] Figure 7 It is a structural schematic diagram of the stator of the present invention.

[0019] In the picture:

[0020] 1. Up-suction fluid pulverizer; 11. Pulverizing mechanism; 111. Pulverizing chamber; 112. Rotor; 113. Stator; 1131. First blocking block; 1132. Second blocking block; 1133. Feed hole; 114. Pulverizing gap; 115. Feed port; 116. First discharge port; 117. Second discharge port; 118. Suction pipe; 12. Centrifugal raw material box; 13. Negative pressure mechanism; 14. Driving mechanism; 141. Lifting shaft; 142. Lifting drive assembly; 15. Storage box; 16. Miscellaneous material box; 2. Mixing box; 21. Feeding port; 3. Screw extrusion mechanism; 31. Screw sleeve; 32. Screw; 33. Rotary drive; 34. Feed port; 35. Extrusion port; 36. Cutter; 4. Positive pressure density controller. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] like Figure 1 As shown, this embodiment provides a feed puffing system, which includes: an upward suction fluid pulverizer 1, used to pulverize raw materials and remove foreign matter; a mixing box 2, used to receive the raw materials pulverized by the upward suction fluid pulverizer 1, and to modulate and mix the raw materials with auxiliary materials; a spiral extrusion mechanism 3, used to receive the raw materials mixed by the mixing box 2; and a positive pressure density controller 4, which is covered at the discharge port of the spiral extrusion mechanism 3; wherein the spiral extrusion mechanism 3 is suitable for squeezing the received raw materials into the positive pressure density controller 4 for puffing.

[0023] In this embodiment, specifically, the pressure at the discharge port of the spiral extrusion mechanism 3 is adjusted by the positive pressure density controller 4, so that there is a pressure difference between the pressure inside the positive pressure density controller 4 and the pressure inside the spiral extrusion mechanism 3, thereby realizing the function of expanding the raw material after entering the positive pressure density controller 4; at the same time, by adjusting the pressure of the positive pressure density controller 4 to change the pressure difference between it and the spiral extrusion mechanism 3, the function of adjusting the different expansion degrees of the raw material is realized; compared with the existing adjustment method of using negative pressure vacuum, this embodiment adopts a positive pressure density controller 4 to perform positive pressure adjustment on the pressure at the discharge port of the spiral extrusion mechanism 3, so that when obtaining the raw material with the required expansion degree, the pressure inside the spiral extrusion mechanism 3 can be increased to ensure that the temperature and humidity in the spiral extrusion mechanism 3 will not be lost, thereby improving the expansion effect of the raw material.

[0024] like Figure 2 As shown, in this embodiment, a feeding port 21 is provided at the upper end of the mixing box 2 ; wherein the mixing box 2 is suitable for receiving the raw materials crushed by the upward suction fluid pulverizer 1 through the feeding port 21 .

[0025] like Figure 3 As shown, in this embodiment, the spiral extrusion mechanism 3 includes: a screw sleeve 31, a screw 32 and a rotary driver 33; wherein the screw 32 is arranged in the screw sleeve 31; a feed port 34 is opened at one end of the screw sleeve 31, and the screw sleeve 31 is suitable for receiving the raw materials mixed in the mixing box 2 through the feed port 34; the rotary driver 33 is suitable for driving the screw 32 to rotate so as to squeeze the raw materials received in the screw sleeve 31 into the positive pressure density controller 4.

[0026] In this embodiment, specifically, the screw 32 is driven to rotate by the rotary driver 33, so that high temperature and high pressure are generated in the screw sleeve 31 to process the raw materials.

[0027] In this embodiment, an extrusion port 35 is provided at the other end of the screw sleeve 31 ; and the positive pressure density controller 4 is covered on the periphery of the extrusion port 35 of the screw sleeve 31 .

[0028] In this embodiment, specifically, the positive pressure density controller 4 can adjust the pressure at the extrusion port 35, so that different pressure differences are generated inside the positive pressure density controller 4 and inside the screw sleeve 31, so as to obtain raw materials with different expansion degrees. At the same time, by adjusting the positive pressure, it is ensured that the temperature and humidity inside the screw sleeve 31 will not be lost.

[0029] In this embodiment, a cutter 36 is provided at the extrusion port 35 of the screw sleeve 31 ; the cutter 36 is suitable for cutting the raw material extruded through the extrusion port 35 .

[0030] In this embodiment, specifically, the cutter 36 can cut the raw material into desired granules for easy use, and the granular raw material can improve the puffing effect.

[0031] like Figure 4 、 Figure 5 、 Figure 6 As shown, in this embodiment, the upward suction fluid pulverizer 1 includes: a pulverizing mechanism 11, which includes:

[0032] The grinding chamber 111, and the rotor 112 and stator 113 disposed in the grinding chamber 111, wherein the inner wall of the stator 113 and the outer wall of the rotor 112 form a grinding gap 114; the centrifugal raw material box 12 is connected to the feed port 115 at the lower end of the grinding chamber 111; the negative pressure mechanism 13 is connected to the first discharge port 116 at the upper end of the grinding chamber 111, and is suitable for sucking the raw materials in the centrifugal raw material box 12 into the grinding gap 114 through the feed port 115 and then sucking the raw materials from the centrifugal raw material box 12 into the storage box 15 through the first discharge port 116 after being ground. ; a driving mechanism 14, connected to the stator 113; and a control module; wherein the control module is suitable for controlling the driving mechanism 14 to drive the stator 113 to move to increase the crushing gap 114 when foreign matter is crushed in the crushing gap 114, and at the same time, through the movement of the stator 113, the stator 113 blocks the first discharge port 116 and the feed port 115, and opens the second discharge port 117 at the lower end of the crushing chamber 111, so that the negative pressure mechanism 13 sucks the foreign matter into the miscellaneous material box 16 through the second discharge port 117.

[0033] In this embodiment, specifically, the foreign matter may be a plastic bag, iron wire, or other material that is difficult to crush; when a foreign matter is crushed in the crushing gap 114, the control module controls the driving mechanism 14 to drive the stator 113 to move upward, and while increasing the crushing gap 114, the existing raw material flow path is changed (the raw material enters the crushing gap 114 from the feed port 115 and is crushed and then enters the storage box 15 from the first discharge port 116), so that the raw material with foreign matter enters the miscellaneous material box 16 from the new flow path (from the crushing gap 114 to the second discharge port 117), thereby achieving the separation of foreign matter; in this embodiment, by increasing the crushing gap 114 by moving the stator 113 upward, it is possible to prevent damage to the crusher caused by forced crushing of foreign matter, and it is also convenient for foreign matter to follow the raw material into the miscellaneous material box 16. At the same time, by changing the flow path of the raw material by moving the stator 113 upward, the crushing and collection of the raw material and the separation and removal of foreign matter can be achieved by real-time switching of the path through a negative pressure mechanism 13; finally, the processed raw material in the storage box 15 is finally drawn into the modulation box 2 for modulation and mixing with other auxiliary materials.

[0034] like Figure 5 、 Figure 6 、 Figure 7As shown, in this embodiment, the stator 113 is arranged around the periphery of the rotor 112; wherein the lower end face of the stator 113 is provided with a first blocking block 1131 and a second blocking block 1132; the first blocking block 1131 and the second blocking block 1132 are respectively located at the feed port 115 and the second discharge port 117, and the second blocking block 1132 is used to block the second discharge port 117; the first blocking block 1131 is provided with a feed hole 1133 adapted to the feed port 115 to suck the raw materials in the centrifugal raw material box 12; when the crushing gap 114 crushes foreign matter, the control module controls the driving mechanism 14 to drive the stator 113 to move upward, so that the upper end of the stator 113 blocks the first discharge port 116, while the second blocking block 1132 opens the second discharge port 117, and the lower end of the first blocking block 1131 blocks the feed port 115.

[0035] In this embodiment, specifically, a slot is provided at the bottom of the crushing chamber 111 to match the first blocking block 1131. During normal crushing, the lower end of the first blocking block 1131 is located in the slot, and the feed hole 1133 on the first blocking block 1131 is aligned with the feed port 115 at the lower end of the crushing chamber 111, so that the centrifugal raw material box 12 enters the crushing chamber 111, enters the crushing gap 114 from bottom to top, and is crushed, and then enters the storage box 15 from the first discharge port 116; this embodiment changes the path of the raw material in the crushing chamber 111 by moving the stator 113, so that when the crushing gap 114 crushes foreign matter, the foreign matter can be sucked into the miscellaneous material box 16 through the negative pressure mechanism 13 to prevent the foreign matter from being sucked into the crushing gap 114 for crushing multiple times. At the same time, by increasing the crushing gap 114, foreign matter can be more conveniently sucked into the miscellaneous material box 16 and will not get stuck in the crushing gap 114.

[0036] In this embodiment, specifically, the negative pressure mechanism 13 can adopt a negative pressure source, and only one negative pressure source needs to be set up, which is connected to the storage box 15 and the miscellaneous material box 16 through the negative pressure source and is respectively connected to the upper end and the lower end of the crushing chamber 111, so that when the raw materials are normally crushed, the raw materials in the centrifugal raw material box 12 are sucked up into the crushing gap 114 through the crushing chamber 111 for crushing, and when foreign matter is crushed, the foreign matter in the crushing chamber 111 is sucked down into the miscellaneous material box 16, that is, by moving the stator 113, the adsorption path of the negative pressure source is changed, thereby separating the foreign matter and the normally crushed raw materials.

[0037] In this embodiment, a suction pipe 118 extending into the centrifugal raw material box 12 is provided at the feed inlet 115 .

[0038] In this embodiment, specifically, a centrifugal raw material box 12 is used to centrifuge the raw material so that foreign matter is separated to the outside, and the suction pipe 118 at the feed port 115 extends into the middle of the centrifugal raw material box 12 to suck the raw material for crushing; the upward suction method is adopted for suction, and a centrifugal raw material box 12 can be set to centrifuge the raw material to separate foreign matter in the raw material to the outside, which is used to suck the raw material with a low foreign matter content in the middle. The traditional method of feeding from top to bottom by dead weight cannot process the raw material. Even if centrifugal treatment is performed first, the raw material in the middle needs to be taken out and then fed into the crushing chamber 111 for crushing. The steps are numerous and the efficiency is low.

[0039] In this embodiment, the driving mechanism 14 includes: a plurality of lifting shafts 141; wherein the bottom of each lifting shaft 141 is connected to the stator 113, and the top is provided with an independent lifting drive component 142; the control module is electrically connected to each lifting drive component 142, and is suitable for controlling each lifting drive component 142 to synchronously contract to increase the crushing gap 114 when foreign matter is crushed into the crushing gap 114.

[0040] In this embodiment, the adaptive upward suction fluid pulverizer 1 also includes: a current sensor electrically connected to the control module; wherein the current sensor is used to detect the driving current when the rotor 112 rotates; the control module is suitable for controlling the lifting drive component 142 to drive the lifting shaft 141 to retract according to the driving current when the rotor 112 rotates detected by the current sensor.

[0041] In this embodiment, specifically, when the stator 113 and the rotor 112 crush foreign matter, the driving current of the rotor 112 during rotation will surge. Therefore, by obtaining a driving current signal through the current sensor, it can be determined whether foreign matter is crushed.

[0042] This embodiment also provides a working method of the feed puffing system as described above, which includes: crushing the raw materials and removing foreign matter by the upward suction fluid pulverizer 1; receiving the raw materials crushed by the upward suction fluid pulverizer 1 by the mixing box 2, and mixing the raw materials with auxiliary materials; receiving the raw materials mixed by the mixing box 2 by the spiral extrusion mechanism 3 and squeezing them into the positive pressure density controller 4 for puffing.

[0043] Regarding the specific structure and implementation process of the feed puffing system, please refer to the relevant discussion in the above embodiments and will not be repeated here.

[0044] To sum up, the present invention adjusts the pressure at the discharge port of the spiral extrusion mechanism 3 through the positive pressure density controller 4, so that there is a pressure difference between the pressure inside the positive pressure density controller 4 and the pressure inside the spiral extrusion mechanism 3, thereby realizing the function of expanding the raw material after entering the positive pressure density controller 4; at the same time, by adjusting the pressure of the positive pressure density controller 4 to change the pressure difference between it and the spiral extrusion mechanism 3, the function of adjusting the different expansion degrees of the raw material is realized; compared with the existing adjustment method of using negative pressure vacuum, this embodiment adopts a positive pressure density controller 4 to perform positive pressure adjustment on the pressure at the discharge port of the spiral extrusion mechanism 3, so that when obtaining the raw material with the required expansion degree, the pressure inside the spiral extrusion mechanism 3 can be increased to ensure that the temperature and humidity in the spiral extrusion mechanism 3 will not be lost, thereby improving the expansion effect of the raw material.

[0045] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0046] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A feed puffing system, characterized in that: include: Updraft fluid pulverizer, used to pulverize raw materials and remove foreign matter; The mixing box is used to receive the raw materials crushed by the upward suction fluid crusher and mix the raw materials with the auxiliary materials; A screw extruder mechanism for receiving the raw materials mixed in the mixing box; and Positive pressure density controller, the cover is installed at the discharge port of the spiral extruder mechanism; in The screw extrusion mechanism is suitable for extruding the received raw materials into the positive pressure density controller for expansion; The upward suction fluid pulverizer comprises: The pulverizing mechanism comprises: a pulverizing chamber, and a rotor and a stator arranged in the pulverizing chamber, wherein the inner wall of the stator and the outer wall of the rotor form a pulverizing gap; The centrifugal raw material box is connected to the feed port at the lower end of the crushing chamber; The negative pressure mechanism is connected to the first discharge port at the upper end of the grinding chamber, and is suitable for sucking the raw materials in the centrifugal raw material box through the feed port into the grinding gap and then sucking the raw materials from the first discharge port into the storage box after being ground; a driving mechanism connected to the stator; and control module; wherein The control module is suitable for controlling the driving mechanism to drive the stator to move to increase the crushing gap when foreign matter is crushed in the crushing gap, while blocking the first discharge port and the feed port through the movement of the stator, and opening the second discharge port located at the lower end of the crushing chamber, so that the negative pressure mechanism sucks the foreign matter into the miscellaneous material box through the second discharge port.

2. The feed puffing system according to claim 1, characterized in that: The upper end of the mixing box is provided with a feeding port; The mixing box is suitable for receiving the raw materials crushed by the upward suction fluid crusher through the feeding port.

3. The feed puffing system according to claim 2, characterized in that: The spiral extrusion mechanism comprises: a screw sleeve, a screw and a rotary driver; wherein The screw is arranged in the screw sleeve; One end of the screw sleeve is provided with a feed port, and the screw sleeve is suitable for receiving the raw materials mixed in the mixing box through the feed port; The rotary driver is suitable for driving the screw to rotate so as to squeeze the raw materials received in the screw sleeve into the positive pressure density controller.

4. The feed puffing system according to claim 3, characterized in that: The other end of the screw sleeve is provided with an extrusion port; The positive pressure density controller cover is arranged on the periphery of the extrusion port of the screw sleeve.

5. The feed puffing system according to claim 4, characterized in that: A cutter is provided at the extrusion port of the screw sleeve; The cutter is suitable for cutting the raw material extruded through the extrusion port.

6. A method for operating a feed expansion system according to any one of claims 1 to 5, characterized in that: include: The raw materials are crushed and foreign matter is removed by an upward suction fluid crusher; The raw materials crushed by the upward suction fluid crusher are received through the mixing box, and the raw materials are modulated and mixed with the auxiliary materials; The raw materials mixed in the mixing box are received by a spiral extruder and squeezed into a positive pressure density controller for expansion.

Images