Wastewater treatment device for primary processing of coffee

Abstract

The invention discloses a waste water treatment device for primary processing of coffee, and belongs to the technical field of waste water treatment.The filtering mechanism comprises a backflow bin and filter cartridges rotationally arranged on the two sides of the backflow bin, and the filter cartridges are used for filtering impurities and pectin in waste water; the flocculation mechanism comprises a flocculation tank and a purification tank which are coaxially arranged; the flocculation basin is positioned on one side of the filtering mechanism towards the gravity direction; the backflow bin comprises side plates on the two sides, arc plates are fixedly arranged on the side plates, and a linkage cavity is formed between the arc plates and the filter cartridge; the arc plate comprises a guide plate communicated with the interior of the backflow bin, and the guide plate is provided with a scraping part attached to the radial inner wall of the filter cartridge; a deposition bin is arranged at the bottom of the flocculation tank, and a plurality of filter screens communicated with the purification tank are mounted on the inner wall of the flocculation tank at intervals. According to the invention, the scraping part is tightly attached to the rotary filter cartridge and rotates along with the filter cartridge to realize on-line self-cleaning. All functional modules are highly integrated, and the system is especially suitable for coffee primary processing factories with limited sites.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and particularly relates to a wastewater treatment device for coffee primary processing. BACKGROUND

[0002] Coffee primary processing starts from cocoa fresh fruit and finally obtains roasting coffee beans. There are mainly three processing methods, including sun drying method, water washing method and honey processing method, and the core difference among them is how to process the pectin layer in the coffee fruit and the drying method. The water washing method, also called wet processing method, separates the fruit by using a pulp sieve during processing to obtain coffee beans with pectin. Then the pectin-coated beans are placed in a fermentation tank for 12-72 hours to decompose the pectin by microorganisms, and then the residual pectin and fermentation products are thoroughly washed away. This step consumes a large amount of water, with an average of 40-50 L of water required for 1 kg of coffee beans.

[0003] Coffee primary processing produces a large amount of high-concentration organic wastewater, and pectin is one of the core pollutants. Pectin increases the viscosity of wastewater and increases the pollutant load, and is also prone to breeding anaerobic bacteria to produce odors, which brings great difficulty to wastewater treatment.

[0004] A coffee production wastewater treatment device and method are disclosed in Chinese patent application No. CN120754594A, which relates to the field of coffee production wastewater treatment, and comprises a filter bin and a filter cartridge. One end of the filter cartridge has an opening, and the filter cartridge is rotatably installed in the filter bin and is sealed at the rotating connection. The filter bin and the filter cartridge form a first cavity, and the first cavity is connected to a negative pressure device. The central axis of the filter cartridge is arranged at an angle to the horizontal plane. The filter cartridge is arranged with sealing elements in a ring array on the side. A sealing ring plate is arranged on the upper side of the filter cartridge. When the filter cartridge rotates, the sealing elements at the sealing ring plate slide sealingly with the inner wall. A scraping element and a cleaning element are arranged in the rotating direction of the filter cartridge. The scraping element is located inside the filter cartridge, and the cleaning element is installed on the inner side of the sealing ring plate. The coffee production wastewater treatment device and method can continuously rotate the filter surface through the cooperative action of negative pressure driving and filter cartridge rotation, and can reduce the blockage rate caused by pectin sticking to the wall in the wastewater by combining the negative pressure release mechanism of the sealing ring plate area, thereby maintaining the stability of the filtration efficiency.

[0005] However, the coffee production wastewater treatment device disclosed above has general treatment effect, cannot perform multiple treatments on the wastewater, and lacks a pectin removal structure, so that the pectin in the wastewater cannot be efficiently removed and collected, and the treatment effect of the filter screen is affected after long-term use. SUMMARY

[0006] The present application aims at solving the problems of the existing coffee production wastewater treatment device, such as general treatment effect, inability to treat wastewater for multiple times, lack of pectin removal structure, inability to efficiently remove and collect pectin in wastewater, and influence on the treatment effect of the filter screen after long time use, and provides a wastewater treatment device for coffee primary processing.

[0007] To achieve the above-mentioned purpose, the technical scheme of the present application is: a wastewater treatment device for coffee primary processing, comprising: a filtering mechanism, comprising a reflux bin and filter cartridges rotationally arranged on both sides thereof, the filter cartridges being used for filtering impurities and pectin in wastewater; a flocculation mechanism, comprising a flocculation tank and a purification tank coaxially arranged; the flocculation tank is located on the side of the filtering mechanism facing the direction of gravity; wherein the reflux bin comprises side plates on both sides, arc plates are fixedly arranged on the side plates, and a linkage cavity is formed between the arc plates and the filter cartridges; the arc plates comprise guide plates in communication with the interior of the reflux bin, and scraping parts are arranged on the guide plates and attached to the radial inner walls of the filter cartridges; a deposition bin is arranged at the bottom of the flocculation tank, and a plurality of filter screens in communication with the purification tank are installed at intervals on the inner walls of the flocculation tank.

[0008] As a further scheme of the present application: symmetric mounting plates are arranged on both sides of the reflux bin, a plurality of connecting frames are connected between the side plates and the mounting plates, and the filter cartridges are rotationally arranged on the side plates and the mounting plates.

[0009] As a further scheme of the present application: a first mounting groove is formed on the outer wall of the side plate facing the mounting plate, a second mounting groove is formed on the inner wall of the mounting plate facing the reflux bin, and the filter cartridges are rotationally arranged between the first mounting groove and the second mounting groove; a rotating cavity in communication with the first mounting groove is further formed in the interior of the side plate, and a gear ring located in the rotating cavity is installed on the outer wall of the filter cartridge.

[0010] As a further scheme of the present application: a notch in communication with the rotating cavity is formed on the side plate, and the filtering mechanism further comprises a double-shaft motor, and a gear in mesh with the gear ring is installed on the output end of the double-shaft motor.

[0011] As a further scheme of the present application: the filtering mechanism further comprises a water inlet pipe, the water inlet pipe comprises two shunt pipes corresponding to the two filter cartridges, and in the corresponding shunt pipe and filter cartridge, the shunt pipe is connected with the mounting plate.

[0012] As a further scheme of the present application: a partition is arranged between the flocculation tank and the deposition bin, a plurality of deposition openings corresponding to a plurality of filter screens are arranged on the partition at intervals, the deposition openings are located between two adjacent filter screens in the corresponding deposition opening and filter screen; the flocculation mechanism comprises a driving device, a plurality of shielding fans are arranged on the output end of the driving device, the shielding fan comprises a first shielding part for intermittently shielding the deposition opening, and a second shielding part for intermittently shielding the filter screen.

[0013] As a further scheme of the present application: the flocculation mechanism further comprises a storage bin, a deslagging pipe is mounted on the storage bin; a flow guide pipe is arranged on the reflux bin, and the flow guide pipe communicates with the inside of the storage bin.

[0014] As a further scheme of the present application: the flocculation mechanism comprises a support frame and a fixed pipe, a rotating pipe located in the inside of the flocculation tank is rotatably arranged on the support frame, and the rotating pipe is rotatably arranged at the bottom of the fixed pipe; a plurality of branch pipes are arranged on the rotating pipe, and a plurality of nozzles are arranged on the plurality of branch pipes.

[0015] As a further scheme of the present application: the outer wall of one of the fixed pipe and the rotating pipe is provided with an engagement frame, and the outer wall of the other is provided with a convex ring, and the convex ring is rotatably arranged in the inside of the engagement frame.

[0016] As a further scheme of the present application: a blowdown pipe is arranged on the deposition bin, and a drain pipe is arranged on the purification tank; a sleeve pipe is arranged in the inside of the deposition bin, and the output end of the driving device is located in the sleeve pipe; a plurality of observation windows are arranged on the purification tank; and a control panel is further included.

[0017] Compared with the prior art, the present application has the following beneficial effects: In the present application, the device is cooperatively designed by the arc plate, the scraping part and the rotating filter cylinder, so that the problem of strong viscosity and easy adhesion and blockage of pectin in coffee wastewater is fundamentally solved. The scraping part is closely attached to the rotating filter cylinder, realizes online self-cleaning with the rotation of the filter cylinder, does not need manual cleaning during shutdown, ensures long-term stable operation of the filtering mechanism, and greatly reduces the shutdown loss caused by blockage. The filtering mechanism is highly integrated in terms of filtering, medicine distribution, sedimentation, filtering and mud discharge, and compared with the traditional dispersed treatment system, the land occupation area is reduced by more than 30%, and it is especially suitable for the scene of limited space of coffee primary processing plant. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further explained in combination with the drawings and embodiments: Figure 1 is a perspective view of the present application; Figure 2 is a perspective view of the filtering mechanism in the present application; Figure 3 is a sectional view of the filtering mechanism in the present application; Figure 4 is a partial sectional view of the filtering mechanism in the present application; Figure 5 is an internal perspective view of the filtering mechanism in the present application; Figure 6 is an internal sectional view of the filtering mechanism in the present application; Figure 7 is a perspective view of the filter cartridge in the present application; Figure 8 is a perspective view of the flocculation mechanism in the present application Figure 1 ; Figure 9 is a sectional view of the flocculation mechanism in the present application; Figure 10 is a perspective view of the flocculation mechanism in the present application Figure 2 ; Figure 11 is a perspective view of the shielding fan and the rotating pipe in the present application; Figure 12 is a partial sectional view of the rotating pipe in the present application.

[0019] BRIEF DESCRIPTION OF DRAWINGS 1. filtering mechanism; 101. reflux bin; 102. mounting plate; 103. connecting frame; 104. water inlet pipe; 105. shunt pipe; 106. side plate; 107. first mounting groove; 108. second mounting groove; 109. rotating cavity; 110. notch; 111. filter cartridge; 112. gear ring; 113. double-shaft motor; 114. gear; 115. flow guide pipe; 116. arc plate; 117. flow guide plate; 118. scraping part; 119. linkage cavity; 2. flocculation mechanism; 201. flocculation tank; 202. purification tank; 203. sedimentation bin; 204. filter screen; 205. partition plate; 206. sedimentation port; 207. driving device; 208. shielding fan; 209. first shielding part; 210. second shielding part; 211. blowdown pipe; 212. sleeve pipe; 213. drain pipe; 214. storage bin; 215. slag discharge pipe; 216. observation window; 217. control panel; 218. supporting frame; 219. rotating pipe; 220. branch pipe; 221. nozzle; 222. fixed pipe; 223. meshing frame; 224. protruding ring. DETAILED DESCRIPTION

[0020] The present application will be described in detail below with reference to the accompanying drawings. Figures 1 to 12The technical solutions of the present invention have been clearly and completely described. 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.

[0021] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] This invention provides, through improvements, a wastewater treatment device for the initial processing of coffee, such as... Figures 1 to 12 As shown, the system includes a filtration mechanism 1, which includes a return chamber 101 and filter cartridges 111 rotatably disposed on both sides thereof. The filter cartridges 111 are used to filter impurities and pectin in the wastewater. The flocculation mechanism 2 includes a flocculation tank 201 and a purification tank 202 arranged coaxially; the flocculation tank 201 is located on the side of the filter mechanism 1 facing the direction of gravity. The reflux bin 101 includes side plates 106 on both sides, and arc plates 116 are fixedly arranged on the side plates 106, and a linkage cavity 119 is formed between the arc plates 116 and the filter cylinder 111; the arc plates 116 include guide plates 117 in communication with the inside of the reflux bin 101, and scraping parts 118 are arranged on the guide plates 117 and abut the radial inner wall of the filter cylinder 111; a deposition bin 203 is arranged at the bottom of the flocculation tank 201, and a plurality of filter screens 204 in communication with the purification tank 202 are arranged at the inner wall of the flocculation tank 201 in an interval.

[0025] In the embodiment, the filtering mechanism 1 is a pectin pretreatment core, the filter cylinder 111 is a cylindrical structure, the peripheral wall is densely covered with filter holes, and is used for retaining coffee peel, pulp and pectin or other impurities. Waste water flows into one end of the reflux bin 101, and the filter cylinder 111 rotates under the drive. The scraping parts 118 abut the inner wall of the filter cylinder 111 and are synchronously cleaned with the rotation of the filter cylinder, so that the pectin is prevented from adhering and blocking the filter holes. The impurities scraped off fall on the guide plates 117 and fall into the inside of the reflux bin 101 along the inclined guide plates 117. The traditional filter cylinder 111 is easily adhered by the high-viscosity pectin of coffee and is invalid, and the self-cleaning function is realized through the dynamic scraping of the scraping parts 118, so that the stable filtering efficiency is maintained.

[0026] The flocculation tank 201 is located below the filtering mechanism 1 and receives the filtered waste water. The deposition bin 203 is a funnel-shaped structure at the bottom of the flocculation tank 201 and is used for collecting sludge generated by flocculation, and a sewage discharge pipe 211 is arranged at the bottom. The filter cylinder 111 is a rotating cylinder, and the inner wall thereof retains pectin and impurities in waste water. The arc plate 116 is a fixed arc plate, and a very narrow space is formed between the arc plate 116 and the inner wall of the filter cylinder 111, and the space is the linkage cavity 119.

[0027] When the filter cylinder 111 rotates clockwise, the pectin and impurities retained on the inner wall of the filter cylinder 111 move together with the filter cylinder 111. When these pollutants move to the area where the arc plate 116 is located, they enter the linkage cavity 119. Since the arc plate 116 is fixed and the gap between the arc plate 116 and the inner wall of the filter cylinder 111 is extremely small, these pollutants cannot fall from the gap between the arc plate 116 and the filter cylinder 111 and are driven to move clockwise with the movement of the filter cylinder 111. Avoiding them from falling to other parts of the equipment at will due to gravity or water flow impact before being scraped off.

[0028] The existence of the arc plate 116 ensures that all the retained pollutants are guided to the scraping parts 118 or the guide plates 117.

[0029] Referring to the drawings Figure 2 - the drawings Figure 5The two sides of the reflux bin 101 are provided with symmetrical mounting plates 102, a plurality of connecting frames 103 are connected between the side plates 106 and the mounting plates 102, and the filter cartridge 111 is rotationally arranged between the side plates 106 and the mounting plates 102.

[0030] In the embodiment: the mounting plates 102, the connecting frames 103 and the side plates 106 constitute the support framework and movement basis of the entire filtering mechanism 1. Their design is directly related to the stability of the equipment, the smooth rotation of the filter cartridge 111 and the convenience of subsequent maintenance. The mounting plates 102 are symmetrically distributed on the two sides of the reflux bin 101.

[0031] In the embodiment: the plurality of connecting frames 103 jointly form a solid frame structure to prevent deformation or vibration during equipment operation, especially under the rotation of the filter cartridge 111 and the impact of water flow.

[0032] In the embodiment: the rotation of the filter cartridge 111 is the key to realizing self-cleaning. When it rotates, its inner wall continuously contacts and rubs against the scraping part 118 fixed on the guide plate 117, thereby scraping off the contaminants.

[0033] In the embodiment: this frame structure composed of the mounting plates 102, the connecting frames 103 and the side plates 106 enables the entire filtering mechanism 1 to be designed, manufactured and installed as an independent module. If the filter cartridge 111 needs to be repaired or replaced, the module can be easily disassembled or opened as a whole. Through the rigid connection of multiple connecting frames 103, the parallelism and spacing accuracy between the mounting plates 102 and the side plates 106 can be guaranteed, thereby ensuring that the filter cartridge 111 can rotate stably and concentrically for a long time, avoiding the decrease of filtering efficiency or mechanical wear caused by eccentricity or shaking.

[0034] Referring to the drawings Figure 3 -Referring to the drawings Figure 5 A first mounting groove 107 is formed on the outer wall of the side plate 106 towards the mounting plate 102, a second mounting groove 108 is formed on the inner wall of the mounting plate 102 towards the reflux bin 101, and the filter cartridge 111 is rotationally arranged between the first mounting groove 107 and the second mounting groove 108. The inside of the side plate 106 is also provided with a rotating cavity 109 in communication with the first mounting groove 107, and a gear ring 112 of the filter cartridge 111 is installed in the rotating cavity 109.

[0035] In the embodiment: the rotating cavity 109 is formed in the inside of the side plate 106 and is in communication with the first mounting groove 107, providing movement space for the gear ring 112. When the filter cartridge 111 is installed, the gear ring 112 at the end thereof will be located in this independent cavity. This design provides installation and meshing space for the gear ring 112 and the gear 114 driving it.

[0036] In this embodiment: the rotating cavity 109 can completely isolate the transmission mechanism from the wastewater treatment area, preventing wastewater, moisture and corrosive substances from entering the transmission system, avoiding rusting, wear and tear or being stuck by contaminants, thereby significantly improving the service life and reliability of the transmission system.

[0037] In this embodiment: the rotating cavity 109 is usually designed to match a sealing ring or gasket, further enhancing the sealing effect.

[0038] In this embodiment: the gear ring 112 is installed on the outer wall of the filter cartridge 111 and inside the rotating cavity 109, which is the power receiving component of the filter cartridge 111.

[0039] Referring to the drawings Figure 2 and the drawings Figure 5 The side plate 106 is provided with a notch 110 communicating with the rotating cavity 109, and the filter mechanism 1 further comprises a double-shaft motor 113, the output end of the double-shaft motor 113 is provided with a gear 114 engaged with the gear ring 112.

[0040] In this embodiment: the notch 110 is provided on the side plate 106 and communicates with the internal rotating cavity 109, which provides physical space for the external gear 114 to extend into the inside of the side plate 106 and combine with the gear ring 112. Through a simple notch 110, power transmission is achieved, avoiding the design of complex shaft holes and sealing structures on the side plate 106.

[0041] In this embodiment: the double-shaft motor 113 is installed on the filter mechanism 1, providing a driving source for the rotating power of the filter cartridge 111. The high-speed, low-torque output of the motor is transmitted to the gear ring 112 through the gear 114.

[0042] Since the diameter of the gear ring 112 is much larger than that of the gear 114, this process also achieves speed reduction and torque increase, so that the filter cartridge 111 can rotate smoothly at a slower but sufficient torque, which is very important for scraping dirt and preventing the filter cartridge 111 from being blocked.

[0043] In this embodiment: the double-shaft motor 113 starts to rotate after being connected to the power supply, and the output shaft of the motor drives the two gears 114 at both ends to rotate synchronously. The gear 114 extends into the rotating cavity 109 through the notch 110 on the side plate 106 and tightly engages with the gear ring 112 at the end of the filter cartridge 111. The rotating force of the gear 114 is transmitted to the gear ring 112 through the meshing teeth, thereby driving the entire filter cartridge 111 to rotate slowly and stably around its central axis.

[0044] The rotation of the filter cartridge 111 causes the relative movement of its inner wall and the fixed scraping part 118, thereby scraping off the contaminants attached to the inner wall and completing the self-cleaning process.

[0045] Referring to the drawingsFigure 2 -attached Figure 4 The filtering mechanism 1 further comprises a water inlet pipe 104, which comprises two branch pipes 105 corresponding to the two filter cartridges 111, and in the corresponding branch pipe 105 and filter cartridge 111, the branch pipe 105 is connected with the mounting plate 102.

[0046] In this embodiment: the water inlet pipe 104 serves as the main water inlet pipe of the entire filtering mechanism 1, which is responsible for transporting the coffee wastewater to be treated from the source to the filtering unit, and then through the subsequent branch pipes 105, the wastewater is evenly distributed into the two filter cartridges 111.

[0047] The branch pipe 105 is a branch of the water inlet pipe 104, forming a Y-shaped structure with the water inlet pipe 104, which guides the wastewater from the water inlet pipe 104 through the two branch pipes 105 to the inside of the two filter cartridges 111 respectively.

[0048] In this embodiment: the coffee wastewater first flows into the filtering mechanism 1 through the water inlet pipe 104, at the end of the water inlet pipe 104, the water flow is divided into two by the branch pipe 105. Each water flow is precisely guided to the corresponding filter cartridge 111 through the respective branch pipe 105 and enters the inside of the filter cartridge 111.

[0049] In this embodiment: there are holes on the mounting plate 102, the water outlets of the branch pipes 105 are aligned with the holes, and the wastewater enters the filter cartridges 111 after passing through the holes.

[0050] After the wastewater enters the inside of the filter cartridge 111, it flows from the inside of the filter cartridge 111 to the outside, passing through the filter material of the filter cartridge 111, impurities and pectin are trapped on the inner wall of the filter cartridge 111, and the filtered water flows out of the filter cartridge 111 and enters the next processing stage.

[0051] Referring to the attached Figure 9 and the attached Figure 11 A partition plate 205 is arranged between the flocculation tank 201 and the sedimentation bin 203, and a plurality of deposition ports 206 corresponding to the plurality of filter screens 204 are arranged on the partition plate 205 in a spaced manner, and in the corresponding deposition port 206 and filter screen 204, the deposition port 206 is located between the adjacent two filter screens 204; the flocculation mechanism 2 comprises a driving device 207, and a plurality of shielding fans 208 are arranged on the output end of the driving device 207, and the shielding fan 208 comprises a first shielding part 209 for intermittently shielding the deposition port 206, and a second shielding part 210 for intermittently shielding the filter screen 204.

[0052] In this embodiment: the partition plate 205 is arranged between the flocculation tank 201 and the sedimentation bin 203, horizontally separating the two areas, which separates the upper flocculation reaction area and the lower sludge sedimentation area, and guides the flow direction of the water and sludge through the deposition port 206 and the filter screen 204.

[0053] The sedimentation ports 206 are arranged on the partition plate 205 and are spaced apart, which are the channels for the flocculated sludge to enter the sedimentation bin 203 from the flocculation tank 201. The flocculated precipitates formed in the flocculation tank 201 will sink due to gravity, and when the sedimentation ports 206 are opened, the precipitates will fall into the sedimentation bin 203 below through the sedimentation ports 206.

[0054] In this embodiment: the sedimentation ports 206 are arranged alternately with the filter screens 204, which can ensure that the sludge does not directly impact the filter screens 204 during the sedimentation process, thereby effectively preventing the filter screens 204 from being instantaneously blocked by a large amount of precipitates.

[0055] In this embodiment: the shielding fans 208 are installed at the output end of the driving device 207 and are located above the partition plate 205 and can rotate around the shaft. Each shielding fan 208 includes two key parts, a first shielding part 209 for intermittently shielding the sedimentation ports 206, and a second shielding part 210 for intermittently shielding the filter screens 204. Through periodic rotation, alternating on-off control of the sedimentation ports 206 and the filter screens 204 is achieved, thereby coordinating the flocculation, sedimentation, and filtration processes.

[0056] In this embodiment: during the flocculation stage, the driving device 207 drives the shielding fan 208 to rotate to a certain position, at which time the first shielding part 209 is away from the sedimentation ports 206, the sedimentation ports 206 are opened, and at the same time, the second shielding part 210 shields the filter screens 204, at which time the filter screens 204 are closed. The wastewater in the flocculation tank 201 fully reacts with the reagent to form flocculates. The flocculates sink under the action of gravity and fall into the sedimentation bin 203 through the opened sedimentation ports 206.

[0057] At this time, the filter screens 204 are closed, which can prevent the flocculates that have not completely settled from entering the purification tank 202, and at the same time, a relatively stable sedimentation environment is created for the sludge in the sedimentation bin 203.

[0058] In this embodiment: after a period of sedimentation, the driving device 207 drives the shielding fan 208 to rotate to another position, at which time the first shielding part 209 shields the sedimentation ports 206, at which time the sedimentation ports 206 are closed, and at the same time, the second shielding part 210 is away from the filter screens 204, i.e., the filter screens 204 are opened. The water in the flocculation tank 201 that has been clarified flows into the outer purification tank 202 through the opened filter screens 204.

[0059] At this time, the sedimentation ports 206 are closed, which can prevent the settled sludge in the sedimentation bin 203 from re-floating and entering the purification tank 202 under the disturbance of the water flow.

[0060] In the embodiment, the logic of settling first and filtering later is realized by the alternating switching of the deposition port 206 and the filter screen 204, which fundamentally avoids the direct impact and clogging of the filter screen 204 by a large amount of suspended sludge. The dynamic intermittent operation not only ensures the time of flocculation reaction and sludge settling, but also efficiently separates the clarified water.

[0061] Referring to the accompanying Figure 8 -attached Figure 9 , the flocculation mechanism 2 further includes a storage bin 214, and a deslagging pipe 215 is installed on the storage bin 214; a flow guide pipe 115 is arranged on the backflow bin 101, and the flow guide pipe 115 is in communication with the inside of the storage bin 214.

[0062] In the embodiment, the storage bin 214, the deslagging pipe 215, and the flow guide pipe 115 jointly constitute a complete pollutant collection and discharge path, which is an important guarantee for ensuring the sustained and stable operation of the entire device. The physical impurities such as silt, pectin, and fruit peel intercepted by the filtering mechanism 1 from the backflow bin 101 through the flow guide pipe 115 will enter the storage bin 214.

[0063] Centralized storage of sludge can simplify the subsequent cleaning and disposal process and avoid the accumulation of sludge in various corners of the equipment. When the sludge in the storage bin 214 accumulates to a certain amount, it can be discharged from the device through the deslagging pipe 215.

[0064] In the embodiment, a valve is usually installed on the deslagging pipe 215 to control the time and discharge amount of deslagging.

[0065] In the embodiment, the flow guide pipe 115 is arranged on the backflow bin 101 and connected to the inside of the storage bin 214, which is a channel connecting the filtering mechanism 1. In the filtering mechanism 1, the physical impurities and part of the pectin intercepted by the filter cartridge 111 and scraped off by the scraping part 118 will be temporarily stored at the bottom of the backflow bin 101. The role of the flow guide pipe 115 is to guide these filtered solid pollutants to the storage bin 214 for centralized treatment.

[0066] Referring to the accompanying Figure 8 -attached Figure 9 and attached Figure 11 , the flocculation mechanism 2 includes a support frame 218 and a fixed pipe 222, the support frame 218 is rotatably provided with a rotating pipe 219 located inside the flocculation tank 201, and the rotating pipe 219 is rotatably arranged at the bottom of the fixed pipe 222; a plurality of branch pipes 220 are arranged on the rotating pipe 219, and a plurality of nozzles 221 are arranged on each of the plurality of branch pipes 220.

[0067] In this embodiment: fixed pipe 222, rotating pipe 219, branch pipe 220 and nozzle 221, together constitute a high-efficiency flocculating agent dosing and mixing device, which solves the problems of uneven distribution of traditional flocculating agent and insufficient mixing in flocculating tank 201. Support frame 218 provides stable support and installation foundation for the entire rotating drug distribution system, ensuring that rotating pipe 219 can rotate stably and concentrically.

[0068] In this embodiment: fixed pipe 222 is a drug delivery pipe, and flocculants (such as PAC) and coagulants (such as PAM) are delivered into fixed pipe 222 by external metering pumps.

[0069] The lower end of fixed pipe 222 is connected to rotating pipe 219 by a rotating seal joint, which ensures smooth flow of the drug into rotating pipe 219 without affecting the free rotation of rotating pipe 219.

[0070] In this embodiment: rotating pipe 219 is driven by a drive device (not shown in the figure) to rotate slowly and stably around the axis of fixed pipe 222. The drug from fixed pipe 222 enters the internal chamber of rotating pipe 219, and branch pipes 220 are evenly installed on the wall of rotating pipe 219, distributed radially or spirally, which further disperses and delivers the drug, guiding the drug in rotating pipe 219 to different positions of the tank body.

[0071] In this embodiment: during the flocculation stage, shutter fan 208 closes filter screen 204, and the rotating drug distribution system is started for efficient mixing. During the sedimentation stage, the drug distribution system can be paused to allow the flocculants to settle smoothly.

[0072] Referring to the accompanying drawings Figure 11 -Appendix Figure 12 , the outer wall of one of fixed pipe 222 and rotating pipe 219 is provided with a meshing frame 223, and the outer wall of the other is provided with a convex ring 224, which is rotatably arranged inside the meshing frame 223.

[0073] In this embodiment: meshing frame 223 and convex ring 224 are the key mechanical designs for dynamic sealing and stable support between fixed pipe 222 and rotating pipe 219. Meshing frame 223 is in the form of a ring-shaped groove, and convex ring 224 is in the form of a ring-shaped protrusion, which is rotatably arranged in the inner groove of meshing frame 223.

[0074] The precise fit of convex ring 224 and the inner wall of meshing frame 223 provides stable radial support for rotating pipe 219, ensuring smooth rotation around the axis of fixed pipe 222 and avoiding shaking or eccentricity. The upper and lower end faces of meshing frame 223 can limit the axial displacement of convex ring 224, preventing rotating pipe 219 from moving up and down under the action of gravity or water pressure, and ensuring the stability of the structure.

[0075] Referring to the drawings Figure 8 -Appendix Figure 10 The sedimentation bin 203 is provided with a sludge discharge pipe 211, and the purification tank 202 is provided with a water discharge pipe 213. The inside of the sedimentation bin 203 is provided with a sleeve pipe 212, and the output end of the driving device 207 is located in the sleeve pipe 212. The purification tank 202 is provided with a plurality of observation windows 216. The device further comprises a control panel 217.

[0076] In this embodiment, the sludge discharge pipe 211 is arranged on the sedimentation bin 203, usually at the bottom or lower part of the side wall of the sedimentation bin 203, and is an auxiliary sludge discharge channel of the sedimentation bin 203. When the sludge in the sedimentation bin 203 accumulates to a certain amount, or when the sedimentation bin 203 needs to be cleaned, the sludge is directly discharged through the sludge discharge pipe 211.

[0077] In this embodiment, the water discharge pipe 213 is arranged on the purification tank 202, and is a clean water output channel of the purification tank 202. The treated water that meets the standard after flocculation, sedimentation and filter screen 204 filtration is discharged from the device through the water discharge pipe 213, and can be directly discharged or introduced into a subsequent deep treatment unit.

[0078] In this embodiment, a valve is usually installed on the water discharge pipe 213, which is used to control the water flow or to close the water when the device is overhauled. The sleeve pipe 212 is arranged in the inside of the sedimentation bin 203, and the transmission shaft of the driving device 207 is arranged in the sleeve pipe 212, which is a protective sleeve pipe for protecting the driving transmission shaft.

[0079] The sludge in the sedimentation bin 203 is in flocculent or viscous state, and the sleeve pipe 212 can prevent the sludge from winding around the transmission shaft, causing transmission jam or excessive torque damage to the device. It can also isolate the sludge from direct contact with the transmission shaft, reduce the wear and corrosion of the shaft body by corrosive substances, and prolong the service life of the driving device 207.

[0080] In this embodiment, the observation windows 216 are arranged on the purification tank 202, usually made of transparent material, and uniformly distributed on the tank wall, which are windows for visual monitoring of water quality. The operator can directly observe the clarity of the water, whether there are suspended flocs, water level and the like in the purification tank 202 through the observation windows 216, and judge the filtration and flocculation effect in real time.

[0081] In this embodiment, the control panel 217 is usually installed on the outside of the rack of the device, which is convenient for the operator to touch, and is the centralized control center of the entire wastewater treatment device. By adjusting the key parameters such as reagent dosage, filter cartridge 111 rotating speed and sludge discharge interval through the panel knob or touch screen, different water quality can be adapted. Thus, the dispersed equipment functions are centrally controlled, the automatic and intelligent operation is realized, the manual intervention is reduced, the operation threshold is lowered, and batch parameter adjustment and fault troubleshooting are facilitated.

[0082] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the underlying principles can be applied to other embodiments without departing from the scope of the present application. Accordingly, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater treatment device for coffee primary processing, characterized by, The utility model relates to a filter device for wastewater treatment, comprising: a filtering mechanism (1) comprising a reflux bin (101) and filter cartridges (111) rotatably arranged on both sides of the reflux bin (101), the filter cartridges (111) being used for filtering impurities and pectin in wastewater; a flocculation mechanism (2) comprising a flocculation tank (201) and a purification tank (202) coaxially arranged, the flocculation tank (201) being located on the side of the filtering mechanism (1) facing the direction of gravity; wherein the reflux bin (101) comprises side plates (106) on both sides, arc plates (116) are fixedly arranged on the side plates (106), and a linkage cavity (119) is formed between the arc plates (116) and the filter cartridges (111); the arc plates (116) comprise guide plates (117) in communication with the interior of the reflux bin (101), the guide plates (117) are provided with scraping parts (118) abutting the radial inner walls of the filter cartridges (111); the bottom of the flocculation tank (201) is provided with a deposition bin (203), and the inner walls of the flocculation tank (201) are spacedly provided with a plurality of filter screens (204) in communication with the purification tank (202).

2. A wastewater treatment device for coffee primary processing according to claim 1, characterized in that: symmetrical mounting plates (102) are arranged on both sides of the reflux bin (101), a plurality of connecting frames (103) are connected between the side plates (106) and the mounting plates (102), and the filter cartridges (111) are rotatably arranged between the side plates (106) and the mounting plates (102).

3. A wastewater treatment device for coffee primary processing according to claim 2, characterized in that: first mounting grooves (107) are formed in the outer walls of the side plates (106) facing the mounting plates (102), second mounting grooves (108) are formed in the inner walls of the mounting plates (102) facing the reflux bin (101), and the filter cartridges (111) are rotatably arranged between the first mounting grooves (107) and the second mounting grooves (108); rotation cavities (109) in communication with the first mounting grooves (107) are further formed in the interiors of the side plates (106), and the filter cartridges (111) are provided with gear rings (112) arranged in the rotation cavities (109).

4. A wastewater treatment device for coffee primary processing according to claim 3, characterized in that: notches (110) in communication with the rotation cavities (109) are formed in the side plates (106), and the filtering mechanism (1) further comprises a double-shaft motor (113), the output end of the double-shaft motor (113) is provided with a gear (114) engaged with the gear ring (113).

5. A wastewater treatment device for coffee primary processing according to claim 2, characterized in that: The filtering mechanism (1) further comprises water inlet pipes (104), the water inlet pipes (104) comprise two shunt pipes (105) corresponding to the two filter cartridges (111), and the shunt pipes (105) are connected with the mounting plates (102) in the corresponding shunt pipes (105) and filter cartridges (111).

6. A wastewater treatment device for coffee primary processing according to any one of claims 1-5, characterized in that: a partition plate (205) is arranged between the flocculation tank (201) and the deposition bin (203), a plurality of deposition openings (206) corresponding to the plurality of filter screens (204) are spacedly formed in the partition plate (205), and the deposition openings (206) are located between adjacent two filter screens (204) in the corresponding deposition openings (206) and filter screens (204). The flocculation mechanism (2) comprises a driving device (207), and the output end of the driving device (207) is provided with a plurality of shielding fans (208), the shielding fan (208) comprises a first shielding part (209) for intermittently shielding the sedimentation port (206), and a second shielding part (210) for intermittently shielding the filter screen (204).

7. A wastewater treatment device for coffee primary processing according to any one of claims 1-5, characterized in that: The flocculation mechanism (2) further comprises a storage bin (214), and a deslagging pipe (215) is mounted on the storage bin (214); a flow guide pipe (115) is arranged on the backflow bin (101), and the flow guide pipe (115) is in communication with the inside of the storage bin (214).

8. A wastewater treatment device for coffee primary processing according to any one of claims 1-5, characterized in that: The flocculation mechanism (2) comprises a support frame (218) and a fixed pipe (222), a rotating pipe (219) located inside the flocculation tank (201) is rotatably arranged on the support frame (218), and the rotating pipe (219) is rotatably arranged at the bottom of the fixed pipe (222). A plurality of branch pipes (220) are arranged on the rotating pipe (219), and a plurality of nozzles (221) are arranged on the plurality of branch pipes (220).

9. A wastewater treatment apparatus for coffee primary processing according to claim 8, characterized in that: The outer wall of one of the fixed pipe (222) and the rotating pipe (219) is provided with an engagement frame (223), and the outer wall of the other is provided with a convex ring (224), and the convex ring (224) is rotatably arranged in the inside of the engagement frame (223).

10. A wastewater treatment device for coffee primary processing according to any one of claims 1-5, characterized in that: A deslagging pipe (211) is arranged on the sedimentation bin (203), and a water draining pipe (213) is arranged on the purification tank (202); And / or, a sleeve pipe (212) is arranged in the inside of the sedimentation bin (203), and the output end of the driving device (207) is located in the sleeve pipe (212); And / or, a plurality of observation windows (216) are arranged on the purification tank (202); And / or, further comprising a control panel (217).

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