Feed crusher and working method thereof

Abstract

The present invention belongs to the technical field of feed processing, and specifically relates to a feed grinder and a working method thereof. The feed grinder comprises: a grinding chamber, in which a rotor and a stator are arranged, and a grinding gap is formed between the outer wall of the rotor and the inner wall of the stator; a control module, which is suitable for controlling a driving mechanism to work to increase the grinding gap when a foreign matter is crushed in the grinding gap, and at the same time, blocking a feed port and a discharge port by moving the stator, and opening a slag discharge port by moving the rotor, so that a negative pressure mechanism sucks the foreign matter into a miscellaneous material box through the slag discharge port; when a foreign matter is crushed in the feed grinder and the working method thereof, the rotor and the stator move up to open the slag discharge port, and the negative pressure mechanism can suck the material out of the grinding chamber through the slag discharge port, and because the slag discharge port is located at the bottom of the grinding chamber, the material does not need to be moved laterally, thereby solving the problem that the material will remain at the bottom of the grinding chamber.

Description

Technical Field

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

[0002] In the fluid feed processing industry, raw materials are fed into the grinder from the top by gravity, crushed, and then flow out from the bottom of the grinder; however, foreign matter in the raw materials is difficult to filter out completely during filtration, resulting in foreign matter often entering the grinder.

[0003] There is a patent for "Adaptive upward suction fluid pulverizer and its working method" with patent number "202211266103.3". It adopts negative pressure suction to grind the material from bottom to top through the grinding mechanism. When "foreign matter" is ground, the grinding gap is increased to allow the "foreign matter" to be discharged through negative pressure.

[0004] However, in the above scheme, during the slag discharge process, since the second discharge port (i.e., the slag discharge port) is arranged on the side wall of the lower end of the crushing chamber, when the material in the crushing chamber is lower than the second discharge port, the negative pressure mechanism can only suck away the material close to the second discharge port, and the material far away from the second discharge port will be difficult to be sucked away by the negative pressure mechanism, resulting in "foreign matter" being easily mixed in the residual material.

[0005] Therefore, it is necessary to design a feed crusher and a working method thereof to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a feed crusher and a working method thereof.

[0007] In order to solve the above technical problems, the present invention provides a feed crusher, which comprises:

[0008] A grinding chamber, in which a rotor and a stator are arranged, and a grinding gap is formed between the outer wall of the rotor and the inner wall of the stator;

[0009] A centrifugal raw material box is connected to the feed port on the lower side wall of the crushing chamber;

[0010] The negative pressure mechanism is connected to the discharge port on the upper side wall 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 discharge port into the storage box after being ground;

[0011] The driving mechanism is connected to the rotor and the stator respectively, and is suitable for driving the rotor and the stator to rise at a differential speed to open the crushing gap;

[0012] The lower part of the rotor is a screw rod adapted to extend into the slag discharge port at the bottom of the grinding chamber, and the slag discharge port is blocked by the middle part of the rotor; and

[0013] The control module is suitable for controlling the driving mechanism to work to increase the pulverizing gap when foreign matter is crushed in the pulverizing gap, and at the same time, the feeding port and the discharging port are blocked by the movement of the stator, and the slag discharge port is opened by the movement of the rotor, so that the negative pressure mechanism sucks the foreign matter into the miscellaneous material box through the slag discharge port;

[0014] The rising of the rotor and the stator is suitable for squeezing the material located above, so that the material moves downward through the crushing gap to impact the foreign matter located in the crushing gap; and

[0015] The control module is suitable for controlling the rotor to reverse when the crushing gap increases, so as to drive the material and foreign matter to move downward, and at the same time, the rotation of the screw assists the negative pressure mechanism to discharge the material into the miscellaneous material box.

[0016] In another aspect, the present invention further provides a working method of a feed grinder, comprising:

[0017] The raw materials are crushed through the crushing gap between the rotor and the stator;

[0018] The raw materials in the centrifugal raw material box are sucked into the crushing gap through the negative pressure mechanism, and then crushed and sucked into the storage box from the discharge port;

[0019] When foreign matter is crushed, the control module controls the driving mechanism to work to increase the crushing gap, and at the same time, the stator moves to block the feed port and the discharge port, and the rotor moves to open the slag discharge port, so that the negative pressure mechanism sucks the foreign matter into the miscellaneous material box through the slag discharge port;

[0020] When foreign matter is crushed, the rotor and stator rise to squeeze the material above, causing the material to move downward through the crushing gap to impact the foreign matter in the crushing gap.

[0021] When foreign matter is crushed, the reverse rotation of the rotor drives the foreign matter downward, and at the same time, the rotation of the screw assists the negative pressure mechanism to discharge the material into the miscellaneous material box.

[0022] The beneficial effect of the present invention is that when the crushing gap of the feed crusher crushes foreign matter, the control module increases the crushing gap by controlling the driving mechanism to prevent damage to the equipment caused by forced crushing. At the same time, in the process of increasing the crushing gap, the flow path of the material is changed by moving the rotor and the stator upward, so that the negative pressure mechanism sucks the material with foreign matter in the crushing chamber away from the slag discharge port; the present invention changes the position of the slag discharge port, and blocks the slag discharge port through the rotor during normal crushing. When foreign matter is crushed, the rotor and the stator move upward to open the slag discharge port, and the negative pressure mechanism can suck the material from the crushing chamber through the slag discharge port. Since the slag discharge port is located at the bottom of the crushing chamber, the material does not need to move laterally, thus solving the problem of excessive crushing. The problem of materials remaining at the bottom of the crushing chamber is solved; at the same time, the upward movement of the rotor allows the screw located in the slag discharge port to extend into the crushing chamber, and the rotation of the screw pushes the material out of the slag discharge port, thereby assisting the negative pressure mechanism in discharging materials; because foreign matter needs to be crushed to cause a change in the rotor driving current, even if the crushing gap is increased, foreign matter may still stick to the rotor, so this solution uses a driving mechanism to drive the rotor and stator to move upward together, thereby squeezing the material in the upper space, so that the material is pressed and moves downward along the crushing gap at a certain speed to impact the foreign matter; at the same time, the control module controls the rotor to reverse, exerting a downward force on the foreign matter and material in the crushing gap to help them move downward.

[0023] Other features and advantages of the present invention will be described in the following description, and partly 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.

[0024] 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

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is the structural schematic diagram of the feed grinder;

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the feed grinder during normal grinding;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the feed grinder when the grinding gap is increased;

[0029] Figure 4 It is a schematic diagram of the structure of the rotor;

[0030] Figure 5 It is a structural schematic diagram of the prior art.

[0031] In the figure:

[0032] Crushing chamber 1, feed port 11, discharge port 12, slag discharge port 13, annular groove 14;

[0033] Rotor 2, screw 21, crushing section 22, oblique pattern 221, blocking section 23;

[0034] Stator 3, feed hole 31;

[0035] Crushing gap 4, centrifugal raw material box 5, negative pressure mechanism 6, storage box 7, driving mechanism 8, miscellaneous material box 9. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. 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 creative work are within the scope of protection of the present invention.

[0037] like Figure 1 , Figure 2 , Figure 3As shown, this embodiment provides a feed grinder, which includes: a grinding chamber 1, in which a rotor 2 and a stator 3 are arranged, and a grinding gap 4 is formed between the outer wall of the rotor 2 and the inner wall of the stator 3; a centrifugal raw material box 5, connected to a feed inlet 11 on the lower side wall of the grinding chamber 1; a negative pressure mechanism 6, connected to a discharge port 12 on the upper side wall of the grinding chamber 1, suitable for sucking the raw materials in the centrifugal raw material box 5 into the grinding gap 4 through the feed inlet 11, and then sucking them into a storage box 7 from the discharge port 12 after grinding; a driving mechanism 8, respectively connected to the rotor 2 and the stator 3, suitable for driving the rotor 2 and the stator 3 to rise at a differential speed to open the grinding gap 4; the lower part of the rotor 2 is a screw 21 suitable for extending into the slag discharge port 13 at the bottom of the grinding chamber 1, and through the rotor The middle part of the rotor 2 blocks the slag discharge port 13; and the control module is suitable for controlling the driving mechanism 8 to work to increase the crushing gap 4 when foreign matter is crushed into the crushing gap 4, while blocking the feed port 11 and the discharge port 12 through the movement of the stator 3, and opening the slag discharge port 13 through the movement of the rotor 2, so that the negative pressure mechanism 6 sucks the foreign matter into the miscellaneous material box 9 through the slag discharge port 13; wherein the rise of the rotor 2 and the stator 3 is suitable for squeezing the material located above, so that the material moves downward through the crushing gap 4 to impact the foreign matter located in the crushing gap 4; and the control module is suitable for controlling the rotor 2 to reverse when the crushing gap 4 increases, so as to drive the material and foreign matter to move downward, and at the same time, assisting the negative pressure mechanism 6 to discharge the material into the miscellaneous material box 9 through the rotation of the screw 21.

[0038] In this embodiment, when the crushing gap 4 crushes foreign matter, the control module controls the driving mechanism 8 to increase the crushing gap 4 to prevent damage to the equipment caused by forced crushing. At the same time, in the process of increasing the crushing gap 4, the flow path of the material is changed by moving the rotor 2 and the stator 3 upward, so that the negative pressure mechanism 6 sucks the material with foreign matter in the crushing chamber 1 away from the slag discharge port 13.

[0039] In the prior art (such as Figure 5 As shown), when the amount of material in the crushing chamber is lower than the negative pressure port, the material will be difficult to be sucked away, so that the material will remain at the bottom of the crushing chamber. At this time, foreign matter is likely to remain in it, resulting in slag discharge failure. In order to solve this problem, the present solution changes the position of the slag discharge port 13, and in the normal crushing process, the slag discharge port 13 is blocked by the rotor 2. When foreign matter is crushed, the rotor 2 and the stator 3 move up to open the slag discharge port 13, and the negative pressure mechanism 6 can suck the material from the crushing chamber 1 through the slag discharge port 13. Since the slag discharge port 13 is located at the bottom of the crushing chamber 1, the material does not need to move laterally, thereby solving the problem that the material will remain at the bottom of the crushing chamber 1; at the same time, the upward movement of the rotor 2 causes the screw 21 located in the slag discharge port 13 to extend into the crushing chamber 1, and the rotation of the screw 21 pushes the material out of the slag discharge port 13, thereby assisting the negative pressure mechanism 6 in discharging the material.

[0040] Since foreign matter needs to be crushed to cause a change in the driving current of the rotor 2, foreign matter is easy to stick to the rotor 2. Even if the crushing gap 4 is increased, the foreign matter may not fall off. Therefore, the present solution drives the rotor 2 and the stator 3 to move upward together through the driving mechanism 8, thereby squeezing the material in the upper space, so that the material is pressed and moves downward along the crushing gap 4 at a certain speed to impact the foreign matter; at the same time, the control module controls the rotor 2 to reverse, exerting a downward force on the foreign matter and material in the crushing gap 4 to help them move downward.

[0041] In this embodiment, the rising speed of the stator 3 is greater than the rising speed of the rotor 2 .

[0042] In this embodiment, the stator 3 and the rotor 2 move upward together, and the pulverizing gap 4 is increased by the speed difference between the stator 3 and the rotor 2.

[0043] like Figure 4 As shown, in this embodiment, the upper part of the rotor 2 is the crushing section 22, the middle part is the blocking section 23 for blocking the slag discharge port 13, and the lower part is the screw 21; when the rotor 2 moves upward, the blocking section 23 opens the slag discharge port 13, and the upper end of the screw 21 extends into the crushing chamber 1.

[0044] In this embodiment, during normal crushing, the sealing section 23 of the rotor 2 abuts against the opening of the slag discharge port 13, and both are inclined surfaces to seal the slag discharge port 13. At this time, the screw 21 is completely located inside the slag discharge port 13; when the rotor 2 moves upward, the upper end of the screw 21 extends into the crushing chamber 1, which not only opens the slag discharge port 13, but also allows the screw 21 to contact with the material, and the material at the bottom of the crushing chamber 1 is discharged by rotation; at the same time, after the screw 21 is set in the slag discharge port 13, the flow path of the material can be changed, so that the material can flow along the spiral channel of the screw 21 (much larger than foreign matter), and sufficient flow can be guaranteed while ensuring suction.

[0045] In this embodiment, the bottom of the pulverizing chamber 1 is configured to be funnel-shaped.

[0046] In this embodiment, the funnel shape facilitates the sliding of materials.

[0047] In this embodiment, a plurality of oblique patterns 221 are provided on the crushing section 22 ; wherein the oblique patterns 221 are suitable for driving the material to move upward when the rotor 2 is crushing, and are suitable for driving the material to move downward when the rotor 2 is reversed.

[0048] In this embodiment, the oblique pattern 221 is provided along the axial direction of the rotor 2 , and the lower portion thereof is inclined toward the forward rotation direction.

[0049] In this embodiment, the stator 3 is arranged around the periphery of the rotor 2; wherein the lower end of the stator 3 is suitable for extending into the annular groove 14 at the bottom of the crushing chamber 1, and a feed hole 31 adapted to the feed port 11 is opened thereon; when the stator 3 moves upward, its upper end blocks the discharge port 12 while its lower end blocks the feed port 11.

[0050] In this embodiment, during normal pulverization, the feed port 11 is connected to the feed hole 31 , and the material can be sucked into the pulverizing chamber 1 .

[0051] In this embodiment, optionally, the driving mechanism 8 includes: a first screw assembly and a second screw assembly; wherein the first screw assembly is connected to the stator 3 for driving the stator 3 to move upward; and the second screw assembly is connected to the rotor 2 for driving the rotor 2 to move upward.

[0052] In this embodiment, the feed grinder further comprises: a current sensor electrically connected to the control module;

[0053] The current sensor is used to detect the driving current when the rotor 2 rotates;

[0054] The control module is suitable for controlling the operation of the driving mechanism 8 according to the driving current detected by the current sensor when the rotor 2 rotates.

[0055] In this embodiment, when the stator 3 and the rotor 2 crush foreign matter, the driving current of the rotor 2 during rotation will surge. Therefore, by acquiring the driving current signal through the current sensor, it can be determined whether the foreign matter is crushed.

[0056] This embodiment also provides a working method of a feed grinder, which includes:

[0057] The raw material is crushed through the crushing gap 4 between the rotor 2 and the stator 3;

[0058] The raw materials in the centrifugal raw material box 5 are sucked into the grinding gap 4 through the negative pressure mechanism 6, and then are sucked into the storage box 7 from the discharge port 12;

[0059] When foreign matter is crushed, the control module controls the driving mechanism 8 to work to increase the crushing gap 4, and at the same time, the stator 3 moves to block the feed port 11 and the discharge port 12, and the rotor 2 moves to open the slag discharge port 13, so that the negative pressure mechanism 6 sucks the foreign matter into the miscellaneous material box 9 through the slag discharge port 13;

[0060] When foreign matter is crushed, the rotor 2 and the stator 3 rise to squeeze the material above, so that the material moves downward through the crushing gap 4 to impact the foreign matter in the crushing gap 4;

[0061] When foreign matter is crushed, the reverse rotation of the rotor 2 drives the foreign matter downward, and at the same time, the rotation of the screw 21 assists the negative pressure mechanism 6 to discharge the material into the miscellaneous material box 9.

[0062] Regarding the specific structure and implementation process of the feed grinder, please refer to the relevant discussion in the above embodiments, which will not be repeated here.

[0063] In summary, when the pulverizing gap 4 of the feed pulverizer pulverizes foreign matter, the control module controls the driving mechanism 8 to increase the pulverizing gap 4 to prevent the equipment from being damaged by forced pulverization. At the same time, in the process of increasing the pulverizing gap 4, the upward movement of the rotor 2 and the stator 3 changes the flow path of the material, so that the negative pressure mechanism 6 sucks the material with foreign matter in the pulverizing chamber 1 away from the slag discharge port 13. Figure 5 As shown), when the amount of material in the crushing chamber is lower than the negative pressure port, the material will be difficult to be sucked away, so that the material will remain at the bottom of the crushing chamber. At this time, foreign matter is likely to remain in it, resulting in slag discharge failure. In order to solve this problem, the present solution changes the position of the slag discharge port 13, and in the normal crushing process, the slag discharge port 13 is blocked by the rotor 2. When foreign matter is crushed, the rotor 2 and the stator 3 move up to open the slag discharge port 13, and the negative pressure mechanism 6 can suck the material from the crushing chamber 1 through the slag discharge port 13. Since the slag discharge port 13 is located at the bottom of the crushing chamber 1, the material does not need to move laterally, thereby solving the problem that the material will remain at the bottom of the crushing chamber 1; at the same time, the upward movement of the rotor 2 causes the screw 21 located in the slag discharge port 13 to extend into the crushing chamber 1, and the rotation of the screw 21 pushes the material out of the slag discharge port 13, thereby assisting the negative pressure mechanism 6 in discharging the material. Since foreign matter needs to be crushed to cause a change in the driving current of the rotor 2, foreign matter is easy to stick to the rotor 2. Even if the crushing gap 4 is increased, the foreign matter may not fall off. Therefore, the present solution drives the rotor 2 and the stator 3 to move upward together through the driving mechanism 8, thereby squeezing the material in the upper space, so that the material is pressed and moves downward along the crushing gap 4 at a certain speed to impact the foreign matter; at the same time, the control module controls the rotor 2 to reverse, exerting a downward force on the foreign matter and material in the crushing gap 4 to help them move downward.

[0064] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0066] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A working method of a feed grinder, characterized in that: include: Crushing the raw material through the crushing gap (4) between the rotor (2) and the stator (3); The raw materials in the centrifugal raw material box (5) are sucked into the grinding gap (4) through the negative pressure mechanism (6), and then are ground and sucked into the storage box (7) from the discharge port (12); When foreign matter is crushed, the control module controls the driving mechanism (8) to work so as to increase the crushing gap (4), and at the same time, the stator (3) moves to block the feed port (11) and the discharge port (12), and the rotor (2) moves to open the slag discharge port (13), so that the negative pressure mechanism (6) sucks the foreign matter into the miscellaneous material box (9) through the slag discharge port (13); When foreign matter is crushed, the rotor (2) and the stator (3) rise to squeeze the material above, causing the material to move downward through the crushing gap (4) to impact the foreign matter in the crushing gap (4); When foreign matter is crushed, the foreign matter is driven downward by the reverse rotation of the rotor (2), and at the same time, the rotation of the screw (21) assists the negative pressure mechanism (6) to discharge the material and foreign matter into the miscellaneous material box (9); Feed mill includes: A pulverizing chamber (1) is provided with a rotor (2) and a stator (3) therein, and a pulverizing gap (4) is formed between the outer wall of the rotor (2) and the inner wall of the stator (3); A centrifugal raw material box (5) connected to a feed port (11) on a lower side wall of the pulverizing chamber (1); A negative pressure mechanism (6) is connected to a discharge port (12) on the upper side wall of the pulverizing chamber (1), and is suitable for sucking raw materials in the centrifugal raw material box (5) through the feed port (11) into the pulverizing gap (4), and then sucking the raw materials from the discharge port (12) into the storage box (7) after pulverization; A driving mechanism (8) is connected to the rotor (2) and the stator (3) respectively, and is suitable for driving the rotor (2) and the stator (3) to increase at a differential speed; The lower part of the rotor (2) is a screw (21) adapted to extend into a slag discharge port (13) at the bottom of the pulverizing chamber (1) and to block the slag discharge port (13) through the middle part of the rotor (2); and The control module is adapted to control the driving mechanism (8) to operate to increase the pulverizing gap (4) when foreign matter is pulverized in the pulverizing gap (4), and at the same time, block the feed port (11) and the discharge port (12) by moving the stator (3), and open the slag discharge port (13) by moving the rotor (2), so that the negative pressure mechanism (6) sucks the foreign matter into the miscellaneous material box (9) through the slag discharge port (13); in The rising of the rotor (2) and the stator (3) is suitable for squeezing the material located above, so that the material moves downward through the crushing gap (4) to impact the foreign matter located in the crushing gap (4); and The control module is suitable for controlling the rotor (2) to reverse when the pulverizing gap (4) increases, so as to drive the material and foreign matter to move downward, and at the same time, the rotation of the screw (21) assists the negative pressure mechanism (6) to discharge the material and foreign matter into the miscellaneous material box (9).

2. The working method according to claim 1, characterized in that: The rising speed of the stator (3) is greater than the rising speed of the rotor (2).

3. The working method according to claim 2, characterized in that: The upper part of the rotor (2) is a crushing section (22), the middle part is a blocking section (23) for blocking the slag discharge port (13), and the lower part is the screw (21); wherein When the rotor (2) moves upward, the blocking section (23) opens the slag discharge port (13), and the upper end of the screw (21) extends into the pulverizing chamber (1).

4. The working method according to claim 3, characterized in that: The crushing section (22) is provided with a plurality of oblique patterns (221); The oblique pattern (221) is suitable for driving the material to move upward when the rotor (2) is crushing, and is suitable for driving the material to move downward when the rotor (2) is reversed.

5. The working method according to claim 1, characterized in that: The stator (3) is arranged around the periphery of the rotor (2); wherein The lower end of the stator (3) is adapted to extend into the annular groove (14) at the bottom of the pulverizing chamber (1), and is provided with a feed hole (31) adapted to the feed opening (11); When the stator (3) moves upward, its upper end blocks the discharge port (12) while its lower end blocks the feed port (11).

6. The working method according to claim 1, characterized in that: Also includes: a current sensor electrically connected to the control module; in The current sensor is used to detect the driving current when the rotor (2) rotates; The control module is suitable for controlling the operation of the drive mechanism (8) according to the drive current detected by the current sensor when the rotor (2) rotates.

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