A wastewater treatment apparatus for juice processing

Abstract

The present application belongs to the technical field of fruit juice wastewater treatment, and particularly relates to a wastewater treatment equipment for fruit juice processing, which comprises a treatment tank, the treatment tank comprises a separation tank and an enzymolysis tank separated by an overflow plate; a water injection pipe is arranged in the separation tank, a pectin interception assembly for intercepting mixed pectin in wastewater is arranged on the pipe body in the separation tank; a cover plate is arranged above the enzymolysis tank, and a liquid injection assembly is arranged on the cover plate; an agitation assembly is arranged in the enzymolysis tank; a heating assembly for heating mixed liquid is arranged in the enzymolysis tank, and a liquid discharge pipe is connected to the tank wall of the enzymolysis tank; the present application can not only intercept and collect the mixed pectin in wastewater, but also can perform enzymolysis treatment on the residual pectin through the heated enzymolysis tank, so as to reduce the viscosity of the wastewater, release the wrapped pigments and organic matters, and improve the subsequent coagulation and biological treatment efficiency.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology in fruit juice processing, and in particular relates to a wastewater treatment device for fruit juice processing. Background Technology

[0002] Fruit juice is made from high-quality fresh fruits through selection, washing, and juicing. The production process generates a large amount of high-concentration organic wastewater. This wastewater primarily originates from stages such as washing the fruit, crushing, juicing, and cleaning containers.

[0003] High-pectin (pectin content can reach 1-5%) fruit juice wastewater is commonly found in the processing of citrus, apples or berries. High-pectin fruit juice wastewater is rich in soluble organic matter, nutrients and bioactive components. Recycling and treatment can convert it into high-value products (such as food additives, feed or energy) while reducing environmental pollution. Pectin (polygalacturonic acid) is a natural gelling agent with thickening, stabilizing and emulsifying effects, and has high market value.

[0004] Existing equipment for recycling and treating fruit juice wastewater generally discharges the wastewater directly into a grit chamber or sedimentation tank for filtration and sedimentation before directly conveying it to a dissolved air flotation tank for suspended solids removal. However, if the above equipment is used to treat fruit juice wastewater with high pectin content, it not only wastes pectin but also increases the viscosity of the wastewater if it is not treated, which will affect the efficiency of other treatment equipment such as dissolved air flotation tanks in treating pectin wastewater. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a wastewater treatment device for fruit juice processing, comprising a treatment tank, which includes a separation tank and an enzymatic hydrolysis tank separated by an overflow plate; the separation tank is equipped with a water injection pipe, and a pectin interception component is installed on the pipe body inside the separation tank to intercept pectin mixed in the wastewater; a cover plate is installed above the enzymatic hydrolysis tank, and multiple sets of injection components are installed on the cover plate to inject pectinase into the enzymatic hydrolysis tank; an agitation component is installed in the enzymatic hydrolysis tank to mix the pectinase added in the enzymatic hydrolysis tank with the wastewater flowing into the separation tank; a heating component is installed in the enzymatic hydrolysis tank to heat the mixture, and a drain pipe is connected to the tank wall of the enzymatic hydrolysis tank.

[0006] As a preferred embodiment, the agitation assembly includes an agitation shaft rotatably mounted in the enzymatic hydrolysis tank, a plurality of agitation rods mounted on the agitation shaft, a support plate fixedly mounted on the treatment tank, a power source fixedly mounted on the support plate, and a transmission assembly connecting the output shaft of the power source and the agitation shaft. The water injection pipe is rotatably installed on the tank wall and overflow plate of the treatment tank through the cooperation of bearings and bearing seats, and the sealed end of the water injection pipe is connected to the stirring shaft.

[0007] As a preferred embodiment, the pectin interception component includes an installation mesh tray mounted on a water injection pipe via an installation sleeve. Several flow holes are provided at the connection between the water injection pipe and the installation mesh tray. An annular groove is provided on the installation mesh tray, and this annular groove is divided into several installation cavities by several partition strips. Each partition strip has a docking groove, and the bottom of the docking groove has a connecting slot that communicates with the flow holes. A fan-shaped filter assembly is installed in each installation cavity, and the liquid inlet of the fan-shaped filter assembly communicates with the connecting slot.

[0008] As a preferred embodiment, the fan-shaped filter assembly includes an assembly strip installed in the docking groove, a bag-shaped filter installed on the assembly strip, a tail support plate installed at the tail of the bag-shaped filter, and partition strips located on both sides of the bag-shaped filter and connected to the tail support plate and the assembly strip. The assembly strip has a flow cavity that communicates with the connecting slot, and the cavity wall that connects the flow cavity to the bag opening of the bag filter is through-hole, so that the waste liquid in the water injection pipe enters the bag filter through the flow hole, the connecting slot and the flow cavity.

[0009] As a preferred embodiment, the fan-shaped filter assembly further includes a suction tube installed inside the bag-shaped filter, a plurality of connecting pipes threaded to the outer ring surface of the mounting mesh, and a valve installed at the opening of the connecting pipes. The suction tube extends to the outer ring of the bag-shaped filter, and the bottom opening of the connecting tube is threadedly connected to the extension opening of the suction tube.

[0010] As a preferred embodiment, the cover plate has a clearance notch for the transmission assembly to avoid, and the height of the cover plate is higher than the upper surface of the overflow plate. As a preferred embodiment, the bottom of the assembly strip has a mating block, the outer side of the mounting sleeve has a mating slot that mates with the mating block, the outer end of the mating block extends out of the outer side of the assembly strip and is connected to a blocking block, a blocking ring is installed on the outer ring surface of the mounting sleeve located on the back of the mounting mesh disk, and a fan-shaped sealing assembly is detachably installed on the mounting mesh disk. The fan-shaped sealing assembly, in conjunction with the blocking block and the blocking ring, is used to seal a single fan-shaped filter assembly.

[0011] As a preferred embodiment, the sector sealing assembly includes a sector plate that is sealed and inserted between the blocking ring and the back of the mounting mesh, as well as between the two blocking blocks and the assembly strip, a U-shaped frame that connects the two sector plates, and a handle mounted on the top of the U-shaped frame.

[0012] The present invention has the following beneficial effects: This invention divides the treatment tank into a separation tank and an enzymatic hydrolysis tank. The pre-filtered wastewater first enters the pectin interception component to intercept and collect the pectin mixed in the wastewater. The collected wastewater containing high amounts of pectin can then be processed for pectin extraction and utilization. The separated pectin wastewater can then be enzymatically hydrolyzed in a heated enzymatic hydrolysis tank to reduce the viscosity of the wastewater, release the encapsulated pigments and organic matter, and improve the efficiency of subsequent coagulation and biological treatment.

[0013] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the processing pool according to an embodiment of the present invention; Figure 3 This is an assembly diagram of multiple sets of fan-shaped filter screen components and mounting trays according to an embodiment of the present invention; Figure 4 This is an exploded view of multiple sets of fan-shaped filter assemblies and mounting trays according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation network disk according to an embodiment of the present invention; Figure 6 This is a first-view view of the fan-shaped filter assembly according to an embodiment of the present invention; Figure 7 This is a second perspective view of the fan-shaped filter assembly according to an embodiment of the present invention; Figure 8 This is a diagram showing the engagement state of the fan-shaped blocking assembly and the fan-shaped filter assembly according to Embodiment 2 of the present invention; Figure 9 This is an exploded view of the assembly of the sector-shaped sealing component and the sector-shaped filter component according to Embodiment 2 of the present invention.

[0016] In the diagram: 1. Treatment tank; 101. Separation tank; 102. Enzymatic hydrolysis tank; 2. Overflow plate; 3. Water injection pipe; 31. Flow hole; 4. Pectin interception component; 41. Mounting sleeve; 42. Mounting mesh tray; 421. Annular groove; 43. Separator strip; 431. Butt joint groove; 432. Connecting slot; 44. Cover plate; 45. Barrier ring; 5. Injection assembly; 6. Agitator assembly; 61. Agitator shaft; 62. Agitator rod; 63. Support plate; 64. Transmission assembly; 65. Power source; 7. Fan-shaped filter assembly; 71. Assembly strip; 711. Flow chamber; 72. Bag filter; 73. Tail support plate; 74. Baffle strip; 75. Suction tube; 76. Connecting tube; 77. Connecting block; 78. Blocking block; 8. Sector-shaped sealing assembly; 81. Sector-shaped plate; 82. U-shaped frame; 83. Handle. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention. Example

[0019] Please see Figures 1-7 As shown, the present invention is a wastewater treatment device for fruit juice processing, including a treatment tank 1, wherein the treatment tank 1 includes a separation tank 101 and an enzymatic hydrolysis tank 102 separated by an overflow plate 2; The separation tank 101 is equipped with a water injection pipe 3, and a pectin interception component 4 for intercepting pectin mixed in the wastewater is installed on the pipe body of the water injection pipe 3 located in the separation tank 101. A cover plate 44 is installed above the enzymatic hydrolysis pool 102, and multiple sets of injection components 5 are installed on the cover plate 44 for injecting pectinase into the enzymatic hydrolysis pool 102. The enzymatic hydrolysis tank 102 is equipped with a stirring component 6, which is used to mix the pectinase added to the enzymatic hydrolysis tank 102 and the wastewater flowing into the separation tank 101. The enzymatic hydrolysis tank 102 is equipped with a heating component for heating the mixture, and a drain pipe is connected to the tank wall of the enzymatic hydrolysis tank 102. It should be noted that: preferably, the inlet of the water injection pipe 3 extends outside the left side of the treatment tank 1, and the outlet of the drain pipe extends outside the right side of the treatment tank 1. The injection assembly 5 is installed on the cover plate 44 through the main infusion pipe and multiple branch pipes, and each branch pipe has a nozzle installed at the bottom of its outlet. The main infusion pipe is connected to the storage tank containing pectinase through the pump body. The heating assembly can be heated by an electric heating wire installed in the enzymatic hydrolysis tank 102. Furthermore, the pectin interception and separation in the separation tank 101 and the enzymatic hydrolysis of residual pectin in the enzymatic hydrolysis tank 102 of the present invention can be continuous or intermittent. Specifically, the specific working process of the wastewater treatment equipment of the present invention is as follows, taking the continuous process as an example: Connect the drain pipe of the pretreatment tank 1 (grid tank) to the outer port of the water injection pipe 3, and then open the valve of the drain pipe to allow the pre-filtered wastewater to enter the water injection pipe 3. Then, it flows into the pectin interception component 4 located in the separation tank 101 through the flow hole 31 on the water injection pipe 3. At this time, the pectin interception component 4 will intercept the pectin mixed in the wastewater, and the waste liquid will flow into the separation tank 101 through the pectin interception component 4. When the waste liquid intercepted in the separation tank 101 rises above the overflow plate 2, the waste liquid will flow into the enzymatic hydrolysis tank 102 through the overflow plate 2. As the intercepted wastewater continuously flows into the enzymatic hydrolysis tank 102, the stirring component 6, the liquid injection component 5, and the heating component are activated. This allows liquid or other forms of pectinase to be delivered into the enzymatic hydrolysis tank 102 through the liquid injection component 5. The temperature inside the enzymatic hydrolysis tank 102 is then monitored by a temperature sensor, maintaining it at 70-90℃ for 10-15 minutes. The stirring component 6 mixes the added pectinase with the wastewater, enabling the pectinase to rapidly decompose any remaining unintercepted pectin in the wastewater. This reduces the viscosity of the wastewater, releases the encapsulated pigments and organic matter, and improves the efficiency of subsequent coagulation and biological treatment. Simultaneously, the pectin content can be measured using a viscometer installed inside the enzymatic hydrolysis tank 102 or by sampling (colorimetric method), facilitating the tracking of the degradation rate. After the wastewater has been enzymatically hydrolyzed in the enzymatic hydrolysis tank 102 for a period of time, the valve on the drain pipe on the right side of the treatment tank 1 and the inlet pipe connected to the dissolved air flotation tank or other wastewater treatment equipment is opened, so that the enzymatically hydrolyzed wastewater can enter the dissolved air flotation tank or other wastewater treatment equipment through the drain pipe and the water injection pipe 3, so as to realize the subsequent processing of the enzymatically hydrolyzed wastewater.

[0020] This invention divides the treatment tank 1 into a separation tank 101 and an enzymatic hydrolysis tank 102, so that the initially filtered wastewater first enters the pectin interception component 4 to intercept and collect the pectin mixed in the wastewater. The collected wastewater containing a high amount of pectin can be further processed for pectin extraction and utilization. The separated pectin wastewater can then be enzymatically hydrolyzed in the heated enzymatic hydrolysis tank 102 to reduce the viscosity of the wastewater, release the encapsulated pigments and organic matter, and improve the efficiency of subsequent coagulation and biological treatment.

[0021] In the most preferred embodiment, the stirring assembly 6 includes a stirring shaft 61 rotatably mounted in the enzymatic hydrolysis tank 102, a plurality of stirring rods 62 mounted on the stirring shaft 61, a support plate 63 fixedly mounted on the treatment tank 1, a power source 65 fixedly mounted on the support plate 63, and a transmission assembly 64 connecting the output shaft of the power source 65 and the stirring shaft 61. The water injection pipe 3 is rotatably installed on the tank wall and overflow plate 2 of the treatment tank 1 through the cooperation of bearings and bearing seats, and the sealed end of the water injection pipe 3 is connected to the stirring shaft 61. The cover plate 44 has a clearance notch for the transmission assembly 64 to avoid, and the height of the cover plate 44 is higher than the upper surface of the overflow plate 2. It should be noted that, in order to facilitate the rotation of the water injection pipe 3 and avoid affecting the connection with the drain pipe on the bar screen, a flange can be installed on the outer pipe opening of the water injection pipe 3 by means of a bearing, and then the flange can be connected to the flange of the drain pipe, so that the water injection pipe 3 can rotate within the separation tank 101; the power source 65 can be a self-locking motor or the like that that can drive the agitator shaft 61 to rotate, and the transmission component 64 is preferably a combination of sprocket and chain teeth, with multiple sets of agitator rods 62 installed on the agitator shaft 61 in a staggered manner; Therefore, when the power source 65 on the support plate 63 is working and drives the stirring shaft 61 to rotate through the transmission component 64, multiple stirring shafts 61 will rotate continuously in the enzymatic hydrolysis tank 102 to stir and mix the pectinase added in the enzymatic hydrolysis tank 102 and the flowing wastewater. The clearance notch on the cover plate 44 facilitates the transmission component 64 to drive the stirring shaft 61 to rotate. The cover plate 44 can effectively keep the heated enzymatic hydrolysis tank 102 warm, and will not interfere with the wastewater separated in the separation tank 101 entering the enzymatic hydrolysis tank 102. When the stirring shaft 61 drives multiple stirring rods 62 to rotate in the enzymatic hydrolysis tank 102, the water injection pipe 3, which is installed by rotating bearings and bearing seats, will also rotate synchronously. This will drive the pectin interception component 4 to rotate synchronously in the separation tank 101. The centrifugal force generated by the rotation of the water injection pipe 3 will cause the pectin intercepted in the pectin interception component 4 to centrifuge and aggregate, preventing the intercepted pectin from clogging the filter screen of the pectin interception component 4. This would affect the interception effect of the pectin mixed in the wastewater and also affect the enzymatic hydrolysis efficiency of the enzymatic hydrolysis tank 102 (because the filter screen of the pectin interception component 4 is clogged, the amount of wastewater separated in the separation tank 101 is reduced, which in turn reduces the amount of wastewater entering the enzymatic hydrolysis tank 102).

[0022] In the preferred embodiment, the pectin interception component 4 includes an installation mesh plate 42 mounted on the water injection pipe 3 via an installation sleeve 41. The water injection pipe 3 and the installation mesh plate 42 are provided with a plurality of flow holes 31. The installation mesh plate 42 is provided with an annular groove 421, which is divided into a plurality of installation cavities by a plurality of partition strips 43. Each partition strip 43 is provided with a docking groove 431, and the bottom of the docking groove 431 is provided with a connecting slot 432 that communicates with the flow holes 31. Each installation cavity is provided with a fan-shaped filter assembly 7, and the liquid inlet of the fan-shaped filter assembly 7 is connected to the connecting slot 432. It should be noted that the opening of the annular groove 421 faces the water flow direction of the separation tank 101, and the several partitioned installation cavities are also arranged in a fan shape. The number of flow holes 31 opened in the circumferential array is the same as the number of fan-shaped filter screen components 7. Specifically, when each set of fan-shaped filter components 7 is installed in the installation cavity, the liquid inlet of the fan-shaped filter component 7 will be sealed and aligned with the connecting slot 432 at the bottom of the docking groove 431. Then, the wastewater sent into the water injection pipe 3 will enter the fan-shaped filter component 7 through the flow hole 31 and the connecting slot 432, so that the pectin mixed in the wastewater is intercepted in the fan-shaped filter component 7, and the wastewater passes through the fan-shaped filter component 7 into the separation tank 101, and then flows into the enzymatic hydrolysis tank 102 through the overflow plate 2. Since the annular groove 421 is open in the direction of wastewater flow, the wastewater filtered by the fan-shaped filter assembly 7 is discharged into the separation tank 101 as much as possible. The back of the annular groove 421 is mesh-like where it fits with the installed fan-shaped filter assembly 7, which facilitates the wastewater filtered by the fan-shaped filter assembly 7 to flow fully into the separation tank 101. The fan-shaped filter assembly 7 is also detachable and installed in the installation cavity, which facilitates the replacement and maintenance of the fan-shaped filter assembly 7 after long-term use.

[0023] In the most preferred embodiment, the fan-shaped filter assembly 7 includes an assembly strip 71 installed in the docking groove 431, a bag-shaped filter 72 installed on the assembly strip 71, a tail support plate 73 installed at the tail of the bag-shaped filter 72, and a partition strip 74 located on both sides of the bag-shaped filter 72 and connected to the tail support plate 73 and the assembly strip 71. The assembly strip 71 has a flow cavity 711 that communicates with the connecting slot 432. The flow cavity 711 is connected to the bag opening of the bag filter 72 through the cavity wall, so that the waste liquid in the water injection pipe 3 enters the bag filter 72 through the flow hole 31, the connecting slot 432 and the flow cavity 711. It should be noted that the bag filter 72 is made of microporous filter membrane material, and the bag opening end of the bag filter 72 is installed at the opening of the flow cavity 711 of the assembly strip 71 by bonding or other means. The outer sides of the bag filter 72 are made of rigid plate material, while the front and rear sides are blocked by partition strips 74. The flow cavity 711 is opened along the length of the assembly strip 71, and the opening length of the flow cavity 711 is less than the length of the assembly strip 71. Specifically, when the assembly bar 71 drives the bag-shaped filter 72, which is blocked by the partition bar 74, to be installed into the installation cavity groove, the assembly bar 71 will be embedded into the docking groove 431, so that the lower cavity opening of the flow cavity 711 is aligned with the connecting slot 432. Then, the assembly bar 71 and the partition bar 43 are fixedly connected by the hexagon socket screws. By repeating the above operation, multiple bag-shaped filter screens 72 can be installed on the installation tray 42 in a circumferential array. Furthermore, when the wastewater injected by the water injection pipe 3 enters the bag filter 72 through the flow hole 31, the connecting slot 432, and the flow cavity 711, the bag filter 72 will intercept and separate a certain volume of colloids mixed in the wastewater. The wastewater then continues to pass through the bag filter 72 into the separation tank 101. As the separated wastewater continuously flows into the separation tank 101, the amount of wastewater generated can be monitored by the level gauge installed in the separation tank 101. If the water level in the separation tank 101 is less than the threshold, the wastewater pressure in the water injection pipe 3 can be increased or the pectin intercepted in the bag filter 72 for a long time can be collected and cleaned to prevent the accumulation of pectin in the bag filter 72 from causing blockage.

[0024] In the most preferred embodiment, the fan-shaped filter assembly 7 further includes a suction tube 75 installed in the bag-shaped filter 72, a plurality of connecting tubes 76 threaded to the outer ring surface of the mounting mesh disk 42, and a valve installed at the opening of the connecting tubes 76. The suction tube 75 extends to the outer ring of the bag filter 72, and the bottom opening of the connecting tube 76 is threadedly connected to the extension opening of the suction tube 75. It should be noted that the valve is either a threaded manual valve or a solenoid valve, and the suction pipe 75 is radially installed at the tail support plate 73 near the tail of the bag filter 72 (away from the bag opening of the bag filter 72), and the suction pipe 75 has at least two sets of suction holes along its length, and the upper pipe opening of the suction pipe 75 is fixed to the hard plate on the outer ring surface of the bag filter 72. Specifically, after the bag filter 72 is installed into the installation cavity, the connecting pipe 76 can be twisted so that its bottom end is threaded into the top end of the suction pipe 75, so that the connecting pipe 76 and the suction pipe 75 are connected. At this time, the connection between the connecting pipe 76 and the suction pipe 75 not only allows the two to be in a connected state, but also allows the connecting pipe 76 to connect and fix the tail of the bag filter 72, preventing the tail of the bag filter 72 from just sticking to the installation cavity, which would cause the bag filter 72 to shake on the installation screen 42 when intercepting and separating pectin in the wastewater. When the bag filter 72 rotates synchronously with the installation screen 42 to intercept and separate the pectin mixed in the wastewater, the valve at the upper end of the connecting pipe 76 is in a closed state. When it is necessary to discharge the pectin collected in the bag filter 72, the injection of wastewater into the water injection pipe 3 should be stopped. Then, the threaded port of the external collection pipe should be connected to the external port of the valve. Then, the pump on the collection pipe should be started so that the suction force generated by it can be applied to the suction pipe 75 through the collection pipe and the connecting pipe 76. The suction force generated by the suction pipe 75 will then draw out the pectin collected in the bag filter 72. At the same time, since the separation tank 101 and the enzymatic hydrolysis tank 102 are intercepted by the overflow plate 2, the wastewater remaining in the separation tank 101 will enter the bag filter 72 to achieve backwashing of the bag filter 72. This will accelerate the efficiency of the pectin collection and discharge in the bag filter 72. After the pectin collected in the bag filter 72 is discharged, the valve at the connecting pipe 76 should be closed. Then, the external collection pipe should be disassembled from the valve. Repeat the above steps to collect and discharge the pectin intercepted in multiple bag filters 72. When it is necessary to disassemble and replace the bag filter 72 that has been used for a long time, you need to first twist the connecting tube 76 so that its bottom end is disconnected from the suction tube 75, and then remove the countersunk hex screws on the assembly strip 71 to disassemble and replace the fan-shaped filter assembly 7 as a whole. Example

[0025] Please see Figures 8-9 As shown, compared to Embodiment 1, which uses a method of stopping the treatment tank 1 to extract and discharge the pectin collected in the bag filter 72, Embodiment 2 makes the following improvements: In the preferred embodiment, a mating block 77 is formed at the bottom of the assembly strip 71, and a mating slot that mates with the mating block 77 is provided on the outer side of the mounting sleeve 41. The outer end of the mating block 77 extends out of the outer side of the assembly strip 71 and is connected to a blocking block 78. A blocking ring 45 is installed on the outer ring surface of the mounting sleeve 41 located on the back of the mounting mesh tray 42. A fan-shaped sealing component 8 is detachably installed on the mounting mesh tray 42. The fan-shaped sealing component 8, in cooperation with the blocking block 78 and the blocking ring 45, is used to seal a single fan-shaped filter assembly 7. Further defined, the sector-shaped sealing assembly 8 includes a sector-shaped plate 81 that is sealed and inserted between the back of the blocking ring 45 and the mounting mesh 42 and between the two blocking blocks 78 and the assembly strip 71, a U-shaped frame 82 that connects the two sector-shaped plates 81, and a handle 83 mounted on the top of the U-shaped frame 82. It should be noted that the fan-shaped size of the fan-shaped plate 81 is larger than the size of the bag filter screen 72 and smaller than the distance between two adjacent separator strips 43. The two vertical walls of the U-shaped frame 82 are fixed to the fan-shaped plate 81 by screws, and the U-shaped frame 82 is staggered from the opening of the connecting pipe 76. The inner side of the blocking block 78 and the assembly strip 71 and the back of the blocking ring 45 and the mounting mesh tray 42 are both formed with notches for inserting the fan-shaped plate 81, so that the inner arc surface of the fan-shaped plate 81 can fit and contact the mounting sleeve 41. Specifically, when the assembly strip 71 is embedded into the mating groove 431, the mating block 77 is simultaneously inserted into the mating slot, and the mating block 77 is also fixed into the mating slot by screws to achieve the installation and fixation of the fan-shaped sealing component 8. When it is necessary to extract and discharge a large amount of pectin collected in a single bag filter 72, the wastewater to be treated is continuously fed into the water injection pipe 3. The stirring component 6 is then controlled to operate slowly, causing the water injection pipe 3 to drive the installation screen 42 to rotate slowly, thus rotating the bag filter 72 to be cleaned to the top. The stirring component 6 then stops operating. The operator, standing safely on the cover plate 44, first inserts two symmetrical fan-shaped plates 81 onto both sides of the installation screen 42, aligning the fan-shaped plates 81 with the bag filter 72 to be cleaned. The operator then continuously presses the handle 83, causing the fan-shaped plates 81 to descend and insert into the notches formed between the inner side of the blocking block 78 and the assembly strip 71, and between the blocking ring 45 and the back of the installation screen 42. This allows the fan-shaped plates 81 to seal the bag filter 72 to be cleaned. The operator then... Connect the collection pipe to the outer port of the valve. At this time, turn on the pump body (suction pump) on the collection pipe so that it can suck out the pectin collected in the bag filter 72 through the suction pipe 75. Since the bag filter 72 is blocked by the fan-shaped plates 81 on both sides, the suction force of the suction pipe 75 can not only suck out the pectin collected in the bag filter 72, but also suck out the wastewater flowing into the bag filter 72 through the water injection pipe 3. Since the suction pipe 75 is installed at the bag opening away from the bag filter 72, the wastewater flowing in the bag filter 72 can wash out the pectin accumulated inside, thereby improving the suction and discharge effect of pectin collected in a single bag filter 72. Moreover, it is not necessary to stop the treatment tank 1 to separate and enzymatically hydrolyze the wastewater to suck out the pectin collected in a single bag filter 72. After the pectin in the bag filter 72 is completely drained (the pectin content in the mixture drained from the bag filter 72 is observed to determine the degree of pectin cleaning), the handle 83 is pulled upwards to disengage the fan-shaped plate 81 from both sides of the bag filter 72. The wastewater injected into the bag filter 72 will then be discharged into the separation tank 101 through the cleaned mesh. Then the valve on the connecting pipe 76 is closed to disconnect the external collection pipe from the valve. The above steps are repeated to achieve the goal of draining and cleaning the pectin collected in one or more bag filters 72 without stopping the operation of the treatment tank 1. It should be further explained that, since the pectin collected in a single bag filter 72 is cleaned in a short time, even if the wastewater injected into the water pipe 3 is continuously filtered and intercepted by several other bag filters 72, and the intercepted wastewater continues to flow into the separation tank 101 and then into the enzymatic hydrolysis tank 102 through the overflow plate 2, although the stirring rod 62 does not rotate, the inflowing wastewater will have a certain impact on the enzymatic hydrolysis wastewater in the enzymatic hydrolysis tank 102, and thus will not affect the normal enzymatic hydrolysis treatment of the subsequent inflowing wastewater.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wastewater treatment device for fruit juice processing, comprising a treatment tank, characterized in that, The treatment tank includes a separation tank and an enzymatic hydrolysis tank separated by an overflow plate; The separation tank is equipped with a water injection pipe, and a pectin interception component is installed on the pipe body inside the separation tank to intercept the pectin mixed in the wastewater. The enzymatic hydrolysis pool is equipped with a cover plate, and the cover plate is equipped with multiple sets of injection components for injecting pectinase into the enzymatic hydrolysis pool. The enzymatic hydrolysis tank is equipped with a stirring component, which is used to mix the pectinase added to the enzymatic hydrolysis tank and the wastewater flowing into the separation tank. The enzymatic hydrolysis tank is equipped with a heating component for heating the mixture, and a drain pipe is connected to the tank wall.

2. The wastewater treatment equipment for fruit juice processing according to claim 1, characterized in that, The stirring assembly includes a stirring shaft rotatably mounted in the enzymatic hydrolysis tank, multiple stirring rods mounted on the stirring shaft, a support plate fixedly mounted on the treatment tank, a power source fixedly mounted on the support plate, and a transmission assembly connecting the output shaft of the power source and the stirring shaft. The water injection pipe is rotatably installed on the tank wall and overflow plate of the treatment tank through the cooperation of bearings and bearing seats, and the sealed end of the water injection pipe is connected to the stirring shaft.

3. The wastewater treatment equipment for fruit juice processing according to claim 2, characterized in that, The pectin interception component includes an installation mesh tray mounted on a water injection pipe. Several flow holes are provided at the connection between the water injection pipe and the installation mesh tray. An annular groove is provided on the installation mesh tray, and this annular groove is divided into several installation cavities by several partition strips. Each partition strip has a docking groove, and the bottom of the docking groove has a connecting slot that communicates with the flow holes. A fan-shaped filter assembly is installed in each installation cavity, and the liquid inlet of the fan-shaped filter assembly communicates with the connecting slot.

4. The wastewater treatment equipment for fruit juice processing according to claim 3, characterized in that, The fan-shaped filter assembly includes an assembly strip installed in the docking groove, a bag-shaped filter installed on the assembly strip, a tail support plate installed at the tail of the bag-shaped filter, and partition strips located on both sides of the bag-shaped filter and connected to the tail support plate and the assembly strip. The assembly strip has a flow cavity that communicates with the connecting slot, and the cavity wall that connects the flow cavity to the bag opening of the bag filter is through-hole, so that the waste liquid in the water injection pipe enters the bag filter through the flow hole, the connecting slot and the flow cavity.

5. The wastewater treatment equipment for fruit juice processing according to claim 4, characterized in that, The fan-shaped filter assembly also includes a suction tube installed inside the bag-shaped filter, multiple connecting pipes threaded to the outer ring surface of the mounting mesh, and a valve installed at the opening of the connecting pipes. The suction tube extends to the outer ring of the bag-shaped filter, and the bottom opening of the connecting tube is threadedly connected to the extension opening of the suction tube.

6. The wastewater treatment equipment for fruit juice processing according to claim 1, characterized in that, The cover plate has a clearance notch for the transmission assembly to avoid, and the height of the cover plate is higher than the upper surface of the overflow plate.

7. The wastewater treatment equipment for fruit juice processing according to claim 5, characterized in that, The bottom of the assembly strip has a mating block, and the outer side of the mounting sleeve has a mating slot that mates with the mating block. The outer end of the mating block extends out of the outer side of the assembly strip and is connected to a blocking block. A blocking ring is installed on the outer ring surface of the mounting sleeve located on the back of the mounting mesh tray. A fan-shaped sealing assembly is detachably installed on the mounting mesh tray. The fan-shaped sealing assembly, in conjunction with the blocking block and the blocking ring, is used to seal a single fan-shaped filter assembly.

8. The wastewater treatment equipment for fruit juice processing according to claim 7, characterized in that, The sector sealing assembly includes a sector plate that is sealed and inserted between the blocking ring and the back of the mounting mesh, as well as between the two blocking blocks and the assembly strip, a U-shaped frame that connects the two sector plates, and a handle mounted on the top of the U-shaped frame.

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