Fish protein extraction device for preparing fish protein organic fertilizer

Abstract

The present invention discloses a fish protein extraction device for preparing fish protein organic fertilizer, which relates to the field of fish protein extraction technology, including an enzymolysis kettle, an inner cavity shaft portion of the enzymolysis kettle is provided with a stirring rod, a lower end portion of the cavity of the enzymolysis kettle is provided with a discharge port, the enzymolysis kettle is provided with a plurality of groups, and the discharge ports of each group of enzymolysis kettles are commonly connected to a filter, the filter comprising a filter cartridge, an extrusion cylinder is sleeved on the outer side of the filter cartridge, an outer cylinder is sleeved on the outer side of the extrusion cylinder, a first chamber and a second chamber are formed between the extrusion cylinder, the filter cartridge and the outer cylinder respectively, the second chamber is sealed and filled with a flushing liquid, and during the rotation of the filter cartridge, the contact position between the extrusion cylinder and the outer cylinder is an extrusion portion, and the extrusion portion locally compresses the flushing liquid to form a flushing, and the fish protein extraction device for preparing fish protein organic fertilizer is provided with an extrusion portion in the filter. The extrusion portion adjusts the flushing position of the filter cartridge according to the rotation of the filter cartridge. Compared with the shutdown flushing, the method of this solution can keep the filter cartridge always in a high-efficiency state.

Description

Technical Field

[0001] The invention relates to the technical field of fish protein extraction, in particular to a fish protein extraction device for preparing fish protein organic fertilizer. Background Art

[0002] The fish protein extraction process is raw material pretreatment - enzymatic hydrolysis - enzyme inactivation - solid-liquid separation - concentration - drying. After cleaning and impurity removal, the raw materials enter the enzymatic hydrolysis equipment and are added with a specific type of protease under certain temperature, pH value and other conditions. The reaction is then carried out for a certain period of time. After inactivation, solid-liquid separation is carried out, that is, the precipitate (fish residue) and the clarified enzymatic hydrolyzate are separated.

[0003] In the process of fish protein extraction, the solid-liquid separator is mainly separated by centrifugation or filtration. Because the high-speed shear force of centrifugal separation may destroy the soluble protein micelles, causing some small molecular peptides to be lost with the slag phase, the relative filtration can effectively avoid the destruction of protein structure and retain biological activity, but the filter is prone to clogging. The existing method is mainly to stop the machine for replacement or backwashing to solve it, which greatly reduces production efficiency. On the other hand, the shutdown for replacement or backwashing is interval, during which the processing efficiency of the filter is continuously declining, that is, the second half of the filtration is already in a low efficiency state. To this end, we propose a fish protein extraction device for the preparation of fish protein organic fertilizer. Summary of the Invention

[0004] The object of the present invention is to provide a fish protein extraction device for preparing fish protein organic fertilizer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a fish protein extraction device for preparing fish protein organic fertilizer, comprising an enzymolysis kettle, an inner cavity shaft portion of the enzymolysis kettle is provided with a stirring rod, a lower end portion of the cavity of the enzymolysis kettle is provided with a discharge port, the enzymolysis kettle is provided with several groups, and the discharge ports of each group of enzymolysis kettles are commonly connected to a filter, and alternating filtration is performed in the filter, the filter comprising a filter cartridge, an extrusion cylinder is sleeved on the outside of the filter cartridge, an outer cylinder is sleeved on the outside of the extrusion cylinder, a first chamber and a second chamber are respectively formed between the extrusion cylinder, the inner side of the filter cartridge and the first chamber constitute a filtrate flow channel for discharge, the second chamber is sealed and filled with flushing liquid, the side wall of the extrusion cylinder is provided with a punching hole extending in the radial direction, and during the rotation of the filter cartridge, the contact position between the extrusion cylinder and the outer cylinder is an extrusion part, and the extrusion part locally compresses the flushing liquid to form flushing.

[0006] Preferably, the axis of the filter cartridge is vertical and the upper end of the filter cartridge is open. The filter cartridge performs eccentric rotational motion to cause the filter residue to roll in a ball. The outer side of the filter cartridge contacts the inner wall of the extrusion cylinder to form a contact portion, and the contact portion is opposite to the extrusion portion.

[0007] Preferably, the side wall of the filter cartridge is in an inverted cone shape, and the filter cartridge rotates at a non-uniform speed, so that the rolling trajectory of the filter residue changes continuously.

[0008] Preferably, the lower end portion of the filter cartridge is movable relative to the upper port plane, and the extrusion portion is located on the deflection side.

[0009] Preferably, the axis of the filter cartridge is set at an angle to the horizontal line, and the filter cartridge rotates around its axis, the outer side of the filter cartridge contacts the inner wall of the extrusion cylinder to form a contact portion, and the contact portion is located directly below the axis of the filter cartridge.

[0010] Preferably, the outer wall of the extrusion cylinder is provided with a radially inwardly concave groove, and the groove compresses and discharges the flushing liquid at the extrusion portion.

[0011] Preferably, an elastic pad is provided at the contact portion of the inner wall of the extrusion cylinder, and the elastic pad contacts and squeezes the filter cylinder when the extrusion cylinder rotates.

[0012] Preferably, the inner side of the filter cartridge is further provided with a guide plate located below the extrusion portion for receiving the flushing liquid.

[0013] Preferably, the outer wall of the extrusion cylinder is provided with a radially inwardly concave groove, which compresses and discharges the flushing liquid at the extrusion part, and the inner side of the filter cylinder is also provided with a guide plate located under the extrusion part for receiving the flushing liquid.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides multiple groups of enzymatic hydrolysis kettles for staggered enzymatic hydrolysis and filtration, which are connected to the same filter to achieve overall high-efficiency filtration.

[0016] The present invention provides an extrusion unit in the filter. The extrusion unit adjusts the flushing position of the filter cartridge according to the rotation of the filter cartridge. Compared with the shutdown flushing method, this solution can keep the filter cartridge in a high efficiency state at all times. In addition, the flushing liquid in this solution only flushes a very small part during the squeezing process, so the impact on the enzymatic hydrolyzate is relatively small.

[0017] The non-rotating rotation of the filter cartridge in the present invention can cause the filter residue to roll centrifugally. The stickiness of its surface will carry away part of the filter residue on the filter cartridge during rolling, thus better solving the clogging problem.

[0018] The oblique placement of the filter cartridge in the present invention can not only effectively prevent clogging, but also separate the flushing liquid through the guide plate for separate treatment, thereby further reducing the energy consumption of subsequent treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the enzymatic hydrolysis kettle of the present invention;

[0020] Figure 2 Schematic diagram of the axial cross-sectional structure of the filter of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the local structure of the radial section;

[0022] Figure 4 To distinguish Figure 3 Schematic diagram of the structure in an axially vertical state;

[0023] Figure 5 A schematic diagram of the state structure set for the elastic pad;

[0024] Figure 6 This is a microscopic diagram of the elastic pad on the surface of the filter cartridge;

[0025] Figure 7 for Figure 6 lateral schematic diagram of ;

[0026] Figure 8 The filter cartridge is a cone-shaped schematic diagram;

[0027] Figure 9 This is a schematic diagram showing that the lower end of the filter cartridge can be movably arranged;

[0028] Figure 10 Schematic diagram of the groove structure on the surface of the extrusion cylinder.

[0029] In the figure: 1. Enzyme hydrolysis kettle; 2. Stirring rod; 3. Discharge port; 4. Filter; 5. Extrusion part; 6. Elastic pad; 7. Guide plate; 401. Filter cartridge; 402. Extrusion cylinder; 403. First chamber; 404. Second chamber; 405. Outer cylinder; 4021. Groove; 8. Contact part. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 efforts are within the scope of protection of the present invention.

[0031] Please refer to Figure 1 and Figure 2 The present invention provides a technical solution: a fish protein extraction device for preparing fish protein organic fertilizer, comprising an enzymolysis kettle 1, an upper end of a tank body of the enzymolysis kettle 1 is provided with a motor, and a stirring rod 2 extending into the tank body of the enzymolysis kettle 1 is connected through the motor, and the motor drives the stirring rod 2 to stir the slurry in the tank body. The tank body of the enzymolysis kettle 1 is also provided with a temperature control device for heating and controlling the temperature to be stable so that the temperature is maintained at the optimal temperature for the enzymolysis reaction. The upper end of the tank body of the enzymolysis kettle 1 is provided with a feed port, and the lower end of the tank body is provided with a discharge port 3;

[0032] The enzymolysis kettle 1 is provided with multiple groups, the number of which is determined by the enzymolysis time in the process. For example, if the enzymolysis time is 5H, it is set to 4-6 groups, and each group uses an interval time for enzymolysis to achieve staggered filtration to avoid the filter 4 being completely empty. The filter 4 is composed of three layers, the radially outward side is called the outer side, and from the inside to the outside are the filter cartridge 401, the extrusion cylinder 402 and the outer cylinder 405. The three are not coaxially arranged. There is a certain distance between the axis of the filter cartridge 401 and the extrusion cylinder 402, so that a gap is generated between the two, namely the first chamber 403. The first chamber 403 is used for directional discharge of the filtered enzymolysis solution. Similarly, because the wheelbase of the extrusion cylinder 402 and the outer cylinder 405 is generated, the second chamber 404 is generated. Figure 2 The second chamber 404 is in an enlarged state, and its gap is set to be smaller. The second chamber 404 is used to accommodate the flushing liquid and is connected to the flushing liquid cavity for real-time replenishment. Under the action of the extrusion cylinder 402, the second chamber 404 is locally squeezed, so that the pressure increases and the flushing liquid is ejected from the punching hole of the extrusion cylinder 402. The punching hole penetrates the radial direction of the extrusion cylinder 402, and the punching hole is set to be smaller so that the flushing liquid does not overflow at the punching hole due to tension, that is, the sealing state of the second chamber 404 is relatively sealed, not completely sealed but cannot actively overflow because the hole is small. This state is set to avoid a large amount of flushing liquid outflow, thereby resulting in more flushing liquid in the enzymatic hydrolyzate, which affects the energy consumption of subsequent processes. The pressurized flushing liquid is ejected under the pressure to flush the surface of the filter cartridge 401. The filter cartridge 401 is divided into two layers, the inner side of which is a filter element such as a filter screen or a filter membrane, and the outer side is a hollow frame for fixing the filter screen or filter membrane;

[0033] The outer side of the extrusion cylinder 402 partially conflicts with the inner side of the outer cylinder 405 , and the conflicting position is the extrusion portion 5 . The formation of the extrusion portion 5 will cause a local pressure change to cause the flushing liquid to spray out, and the extrusion portion 5 will change position as the extrusion cylinder 402 rotates.

[0034] See Figure 2 and Figure 4 The filter cartridge 401 is arranged with its axis pointing vertically upward. In this state, the filter cartridge 401 is closed at the lower end and has an open upper end as the feed end. The movement of the filter cartridge 401 is divided into two modes. One is rotation only, and it does not rotate around a single axis. Instead, the axis of the filter cartridge 401 rotates around the axis, and the filter cartridge 401 itself does not rotate. Figure 4 In the state shown, the filter cartridge 401 is against the extrusion cylinder 402 to the right to form the contact portion 8. In this state, the overall centrifugal force of the filter cartridge 401 is to the right, and the enzymatic hydrolysate to be filtered flows more to the right and out of the edge of the contact portion 8, while the left side is less or not filtered due to the centrifugal force, which is almost a stagnant state, and the extrusion portion 5 is at a position opposite to the contact portion 8, that is, Figure 4In this state, although the gap of the first chamber 403 on the left is at its maximum, the enzymatic hydrolyzate is not filtered out due to the centrifugal force, and the squeezing part 5 will produce squeezing to align the flushing liquid with the position of the filter cartridge 401 for flushing, that is, a single small amount of flushing, continuously maintaining the filtration efficiency of the filter screen, the relative position of the squeezing part 5 and the contact part 8 can be achieved by arranging a roller in the second chamber 404, so that the two are located on both sides of the same diameter of the circumference, preferably directly opposite, that is, the two are located at the two end points of the same diameter of the circumference, that is, Figure 2 In this state, when the filter cartridge 401 is pressed down, the roller is located at the same position, so that the extrusion part 5 is located directly above, and the roller slides as the filter cartridge 401 rotates;

[0035] Furthermore, another mode of movement is that the filter cartridge 401 rotates around the axis while also rotating on its own. This mode causes the filter cartridge 401 to roll rather than slide relative to the extrusion cylinder 402, and has better stability. The mode of self-rotation around the axis, which is different from transmission, can also cause the filter residue in the filter cartridge 401 to gradually concentrate into a mass and roll, because the rolling of the filter residue will to a certain extent bring out the filter residue on the side wall of the filter cartridge 401, thereby also achieving the purpose of clearing blockage. Different from centrifugal filtration, the rotation speed of this scheme is relatively small, and the shear force generated is not enough to destroy the protein peptide.

[0036] See Figure 10 Furthermore, an elastic layer is provided around the outer wall of the extrusion cylinder 402, and an inward-concave groove 4021 is provided on the elastic layer. The purpose of providing the groove 4021 is that when the extrusion cylinder 402 rotates, the groove 4021 forms a small cavity when it approaches the extrusion part 5. When the cavity completely overlaps with the extrusion part 5, it will be squeezed, and the compression cavity will form the flushing liquid injection pressure.

[0037] See Figure 8 Furthermore, the side wall of the filter cartridge 401 is in an inverted cone shape. In this state, the extrusion cylinder 402 and the outer cylinder 405 are adapted to each other, and the rotation (not self-rotation) of the filter cartridge 401 is a non-uniform rotation. When the cross-section of the side wall of the filter cartridge 401 is in an inclined state, the centrifugal force can be affected by the rotation speed, thereby changing the rolling trajectory of the massed filter residue, so that it contacts various positions of the side filter screen and brings down the filter residue on its inner wall surface.

[0038] See Figure 9 The lower end of the filter cartridge 401 can move relative to the upper end, that is, the two are not a whole. The lower end is provided with an isolator that has the same function as the roller, so that the filter cartridge 401 always keeps Figure 9 The inclined state makes the filter cartridge 401 rotate (not rotate) so that the side wall of the filter cartridge 401 can form an inclined surface, the cross section is at an angle to the vertical line, and the upper end on one side covers the lower end ( Figure 9The left side of the filter is shown in FIG5 ), and the centrifugal force of the deflection in this state is rightward, and the extrusion generated by the extrusion portion 5 enables the flushing of the flushing liquid to better clean the filter screen, so that its filtering effect is always maintained in a better state.

[0039] The filter residue is discharged when the enzymatic hydrolysis kettle 1 is switched. An openable and closable discharge port is provided at the bottom of the filter cartridge 401 or a lifting mechanism is provided at the upper end of the filter 4 for discharge.

[0040] See Figure 2 and Figure 3 , different from the above-mentioned vertically arranged filter cartridge 401, in this embodiment, the axis of the filter cartridge 401 forms an angle α with the horizontal line, and the angle is 5-20°. The filter cartridge 401 in the inclined state only needs to rotate around its own axis, and relatively, its contact portion 8 is always located directly below the axis, while the corresponding extrusion portion 5 is located above the axis. The filter cartridge 401 set in the inclined state can better discharge the filter residue and work continuously, and the filter cartridge 401 at the extrusion portion 5 above the axis of the filter cartridge 401 will be locally washed down by gravity due to the effect of gravity. The upper end of the filter cartridge 401 in the inclined state will generate a width L in the horizontal direction due to the inclination. The discharge port 3 of the enzymatic hydrolysis kettle 1 is guided to the L width range, or directly extends into the interior of the filter cartridge 401.

[0041] See Figure 10 Furthermore, an elastic layer is provided around the outer wall of the extrusion cylinder 402, and an inward-concave groove 4021 is provided on the elastic layer. The purpose of providing the groove 4021 is that when the extrusion cylinder 402 rotates, the groove 4021 forms a small cavity when it approaches the extrusion part 5. As the cavity completely overlaps with the extrusion part 5, extrusion is formed. The compression cavity increases the pressure on the flushing liquid, which will be directly sprayed downward onto the outer wall of the filter cylinder 401 for flushing, thereby flushing the filter residue.

[0042] See Figure 5 、 Figure 6 and Figure 7 In the implementation state where the filter cartridge 401 is tilted, an elastic pad 6 is provided between the filter cartridge 401 and the extrusion cylinder 402 and located at the position of the contact portion 8. The cross section of the elastic pad 6 is annular and connected end to end. A rolling mechanism such as a roller is provided in the middle of the elastic pad 6 to facilitate its own rotation. When the elastic pad 6 is squeezed by the filter cartridge 401 and the extrusion cylinder 402, and the rotation directions of the two are opposite, the elastic pad 6 always rotates in the original position.

[0043] During extrusion, due to the elasticity of the elastic pad 6 itself, under the microscopic Figure 6 and Figure 7 , so that the filter residue in the holes of the filter screen is lifted up, or because the elastic pad 6 lifts up the local filter screen in an inverted shape, the filter residue is better discharged and the blockage is solved.

[0044] See Figure 2 and Figure 3 When the filter cartridge 401 is tilted, its flushing part can receive the flushing liquid by setting a guide plate 7 located just below the extrusion part 5. Because this part of the flushing liquid contains a small amount of enzymatic hydrolyzate and part of the filter residue, this part is treated separately to avoid the overall treatment and resulting in higher energy consumption.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fish protein extraction device for preparing fish protein organic fertilizer, comprising an enzymolysis kettle (1), a stirring rod (2) provided on the inner shaft of the enzymolysis kettle (1), and a discharge port (3) provided on the lower end of the cavity of the enzymolysis kettle (1), characterized in that: The enzymolysis kettle (1) is provided with a plurality of groups, and the discharge port (3) of each group of enzymolysis kettles (1) is commonly connected to a filter (4), and alternate filtration is performed in the filter (4), the filter (4) comprising a filter cartridge (401), an extrusion cylinder (402) is sleeved on the outer side of the filter cartridge (401), an outer cylinder (405) is sleeved on the outer side of the extrusion cylinder (402), a first chamber (403) and a second chamber (404) are respectively formed between the extrusion cylinder (402), the filter cartridge (401) and the outer cylinder (405), the inner side of the filter cartridge (401) and the first chamber (403) constitute a filtrate flow channel, the second chamber (404) is sealed and filled with a flushing liquid, a punching hole extending in the radial direction is provided on the side wall of the extrusion cylinder (402), and during the rotation of the filter cartridge (401), the contact position between the extrusion cylinder (402) and the outer cylinder (405) is an extrusion portion (5), and the extrusion portion (5) locally compresses the flushing liquid to form flushing; The axis of the filter cartridge (401) is vertical and the upper end of the filter cartridge (401) is open. The filter cartridge (401) performs off-axis rotational motion, causing the filter residue to roll in a mass. The outer side of the filter cartridge (401) contacts the inner wall of the extrusion cylinder (402) to form a contact portion (8), and the contact portion (8) is positioned opposite to the extrusion portion (5).

2. A fish protein extraction device for preparing fish protein organic fertilizer according to claim 1, characterized in that: The side wall of the filter cartridge (401) is in an inverted cone shape, and the filter cartridge (401) rotates at a non-uniform speed, so that the rolling trajectory of the filter residue continuously changes.

3. A fish protein extraction device for preparing fish protein organic fertilizer according to claim 1, characterized in that: The lower end of the filter cartridge (401) is movable relative to the upper port plane, and the extrusion portion (5) is located on the deflection side.

4. A fish protein extraction device for preparing fish protein organic fertilizer according to claim 1, characterized in that: The outer wall of the extrusion cylinder (402) is provided with a radially inwardly concave groove (4021), and the groove (4021) compresses and discharges the flushing liquid at the extrusion portion (5).

5. A fish protein extraction device for preparing fish protein organic fertilizer, characterized by: The invention comprises an enzymolysis kettle (1), wherein the inner cavity axis of the enzymolysis kettle (1) is provided with a stirring rod (2), and the lower end of the cavity of the enzymolysis kettle (1) is provided with a discharge port (3), and the characteristic is that: the enzymolysis kettle (1) is provided with a plurality of groups, and the discharge ports (3) of each group of enzymolysis kettles (1) are commonly connected to a filter (4), and alternate filtration is performed in the filter (4), and the filter (4) comprises a filter cartridge (401), an extrusion cylinder (402) is sleeved on the outer side of the filter cartridge (401), an outer cylinder (405) is sleeved on the outer side of the extrusion cylinder (402), and the extrusion cylinder ( A first chamber (403) and a second chamber (404) are respectively formed between the filter cartridge (402) and the filter cartridge (401) and the outer cartridge (405); the inner side of the filter cartridge (401) and the first chamber (403) constitute a filtrate flow channel; the second chamber (404) is sealed and filled with a flushing liquid; a punching hole extending in a radial direction is provided on the side wall of the extrusion cylinder (402); during the rotation of the filter cartridge (401), the contact position between the extrusion cylinder (402) and the outer cartridge (405) is the extrusion portion (5); the extrusion portion (5) locally compresses the flushing liquid to form flushing; The axis of the filter cartridge (401) is arranged at an angle to the horizontal line, and the filter cartridge (401) rotates around its axis. The outer side of the filter cartridge (401) contacts the inner wall of the extrusion cylinder (402) to form a contact portion (8), and the contact portion (8) is located directly below the axis of the filter cartridge (401).

6. A fish protein extraction device for preparing fish protein organic fertilizer according to claim 5, characterized in that: The outer wall of the extrusion cylinder (402) is provided with a radially inwardly concave groove (4021), and the groove (4021) compresses and discharges the flushing liquid at the extrusion portion (5).

7. A fish protein extraction device for preparing fish protein organic fertilizer according to claim 5, characterized in that: An elastic pad (6) is provided on the inner wall of the extrusion cylinder (402) at the contact portion (8), and the elastic pad (6) contacts and squeezes the filter cylinder (401) when the extrusion cylinder (402) rotates.

8. A fish protein extraction device for preparing fish protein organic fertilizer according to claim 5 or 7, characterized in that: The inner side of the filter cartridge (401) is further provided with a guide plate (7) located below the extrusion portion (5) for receiving the flushing liquid.

9. A fish protein extraction device for preparing fish protein organic fertilizer according to claim 5, characterized in that: The outer wall of the extrusion cylinder (402) is provided with a radially inwardly concave groove (4021), and the groove (4021) compresses and discharges the flushing liquid at the extrusion portion (5). The inner side of the filter cylinder (401) is also provided with a guide plate (7) located below the extrusion portion (5) for receiving the flushing liquid.

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