Wastewater pretreatment device and mvr wastewater treatment device

Abstract

The utility model discloses a wastewater pretreatment device and MVR wastewater treatment device relates to wastewater treatment technical field, including processing box, the fixed separation disc in processing box, the filter chamber lateral wall is equipped with the discharge port on, rotates filter core, rotates filter core drives rotation through rotating device, is connected with the scraper on rotates filter core, collection box, collection box with discharge port intercommunication, rotates filter core one side carries out filtration work, one side rotation activity, makes the impurity that adheres on rotates filter core be thrown out and fall on separation disc, and the scraper follows rotates filter core and rotates and scrape up the impurity that falls on separation disc and throw to the discharge port and export to the collection box and collect up, avoid the impurity and block up rotates filter core, can ensure that wastewater pretreatment work can continue to carry out, improves wastewater pretreatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater pretreatment device and an MVR wastewater treatment device. Background Technology

[0002] Wastewater treatment generally requires pretreatment devices to improve treatment efficiency. For example, for MVR treatment devices, since the basic principle is to compress the secondary steam that would otherwise be condensed by cooling water in the evaporator, increase its pressure and saturation temperature, and then send it to the evaporator heater as a heat source to heat the feed liquid, pretreatment is required to separate impurities.

[0003] Existing wastewater treatment technologies often use filter plates to separate impurities from wastewater during pretreatment. However, in practice, it has been found that the filter pores of these plates are prone to clogging, leading to reduced filtration efficiency and directly impacting the efficiency of subsequent wastewater treatment. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a wastewater pretreatment device and an MVR wastewater treatment device.

[0005] A wastewater pretreatment device according to a first aspect of the present invention includes: a treatment tank having an inlet on its upper side, a dividing disc fixed inside the treatment tank dividing the treatment tank into an upper filtration chamber and a lower temporary storage chamber, and a slag discharge port on the side wall of the filtration chamber; a rotating filter element inserted into the dividing disc, the rotating filter element being driven to rotate by a rotating device, a scraper connected to the rotating filter element, the lower side of the scraper pressing against the upper side of the dividing disc, a filter element input surface on the outer side wall of the rotating filter element located inside the filtration chamber, a filter element output port at the lower end of the rotating filter element located inside the temporary storage chamber; and a collection tank located on the outer side wall of the treatment tank, the collection tank communicating with the slag discharge port.

[0006] According to some embodiments of the present invention, a motor mounting chamber is provided on the upper side of the processing box, and a rotary motor is provided in the motor mounting chamber. The rotary motor serves as a rotating device and can drive the rotary filter element to rotate around a vertical axis.

[0007] According to some embodiments of the present invention, the separating disc is a conical plate structure with a conical surface. The slag discharge port corresponds to the lower side of the conical surface, and impurities on the separating disc can slide along the conical surface to the inner side wall of the filter chamber and enter the slag discharge port.

[0008] According to some embodiments of this utility model, it further includes a scraper mounting ring, the scraper being connected to the upper part of the scraper mounting ring; the scraper mounting ring has an inner mounting hole, the rotating filter element is inserted into the inner mounting hole, and the inner mounting hole is fixedly connected to the rotating filter element; a rotating guide hole is provided on the separator disc, the lower part of the scraper mounting ring is inserted into the rotating guide hole, and the scraper mounting ring is rotatably connected to the rotating guide hole.

[0009] According to some embodiments of the present invention, the scraper includes a scraping brush portion, an elastic brush strip is provided on the lower side of the scraping brush portion, a spring is provided between the lower side of the scraping brush portion and the upper side of the elastic brush strip, and the lower side of the elastic brush strip abuts against the upper side of the separating disc.

[0010] According to some embodiments of this utility model, a reflux port is provided on the outer side wall of the temporary storage room, and the collection box has an upper collection inlet and a lower collection outlet. The collection inlet is connected to the slag discharge port, and the collection outlet is connected to the reflux port. A collection box switch structure is provided on the collection inlet, which can control the collection inlet to open or close. A filter screen is provided between the collection outlet and the reflux port.

[0011] According to some embodiments of the present invention, a mesh box is provided inside the collection box, and a replacement opening is provided on the side wall of the collection box. A detachable sealing plate is covered on the replacement opening, and the mesh box can be disassembled and installed through the replacement opening.

[0012] According to some embodiments of the present invention, the collection box switch structure includes a screw and a sealing plate. The screw is connected to the upper side of the collection box, and the sealing plate is threadedly connected to the screw. The screw can rotate to drive the sealing plate to move along the extension direction of the screw, and the sealing plate can block or open the collection inlet.

[0013] According to some embodiments of this utility model, a guide groove is provided on the top wall of the collection box, and a guide block is provided on the upper side of the sealing plate. The guide block is inserted into the guide groove, and the guide groove can guide the guide block to move.

[0014] The wastewater pretreatment device according to the embodiments of this utility model has at least the following technical effects: 1. The rotating filter element rotates while performing filtration, causing impurities attached to the filter element to be thrown off and fall onto the separating disc. The scraper rotates with the filter element to scrape up the impurities that have fallen onto the separating disc and throw them into the slag discharge port for collection in the collection box. This prevents impurities from clogging the rotating filter element, ensuring that the wastewater pretreatment work can continue and improving the efficiency of wastewater pretreatment. 2. The separating disc adopts a conical plate structure. The conical design on the separating disc makes it easier for impurities on the separating disc to be thrown into the collection box; 3. When cleaning the collection box, the collection inlet can be closed by controlling the collection box switch structure, and the collection box will stop receiving impurities. This allows the collection box to be cleaned without stopping the machine.

[0015] The MVR wastewater treatment device according to a second aspect of the present invention includes the wastewater pretreatment device according to the first aspect of the present invention, and further includes an MVR evaporator. The MVR evaporator is connected to the temporary storage chamber via a water suction pipe, and a water suction pump is provided on the water suction pipe.

[0016] The MVR wastewater treatment device according to the present invention has at least the following beneficial effects: the rotating filter element rotates while performing filtration, causing impurities attached to the rotating filter element to be thrown out and fall onto the separating disc. The scraper rotates along with the rotating filter element to scrape up the impurities that fall onto the separating disc and throw them into the slag discharge port for collection in the collection box. This avoids impurities clogging the rotating filter element, thus ensuring that the wastewater pretreatment work can continue and improving the wastewater treatment efficiency of the MVR wastewater treatment device.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of the MVR wastewater treatment device of this utility model; Figure 2 This is a three-dimensional sectional view of the wastewater pretreatment device of this utility model; Figure 3 This is a three-dimensional sectional view of the wastewater pretreatment device of this utility model from another angle; Figure 4 This is a schematic diagram of the operation of the wastewater pretreatment device of this utility model; Figure 5 This is a three-dimensional sectional view of the collection box of this utility model; Figure 6 This is a three-dimensional schematic diagram of the connection between the waste rotary filter element and the scraper of this utility model; Figure 7 This is a perspective view of the scraper of this utility model.

[0019] Figure label: Treatment tank 100, inlet 110, dividing disc 120, conical surface 121, rotating guide hole 122, filter chamber 130, slag discharge port 131, temporary storage chamber 140, reflux port 141, motor mounting chamber 150, rotary motor 151, motor shaft 152; rotating filter element 200, filter element input surface 210, filter element output port 220; scraper 300, scraper mounting ring 310, inner mounting hole 311, scraper fixing part 320, scraper brush part Components: 330, elastic brush strip 331, spring 332; collection box 400, replacement opening 401, guide groove 402, bottom slope of collection box 403, screw bearing 404, collection inlet 410, collection outlet 420, collection box switch structure 430, screw 431, sealing plate 432, guide block 433, filter screen plate 440, screen box 450, sealing plate 460; MVR evaporator 500, suction pipe 510, suction pump 520. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "multiple" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] The following is for reference. Figure 1 and Figure 2 This invention describes a wastewater pretreatment apparatus according to an embodiment of the present invention.

[0025] like Figure 1 and Figure 2 As shown, the wastewater pretreatment device according to an embodiment of the present invention includes a treatment tank 100, a rotary filter element 200, and a collection tank 400.

[0026] The treatment tank 100 has an inlet 110 on its upper side. A dividing disc 120 is fixed inside the treatment tank 100, dividing it into an upper filtration chamber 130 and a lower temporary storage chamber 140. A slag discharge port 131 is provided on the side wall of the filtration chamber 130. (Refer to...) Figure 2 , Figure 3 A rotating filter element 200 is inserted into a separating disc 120. The rotating filter element 200 is driven to rotate by a rotating device. A scraper 300 is connected to the rotating filter element 200. The lower side of the scraper 300 abuts against the upper side of the separating disc 120. The outer wall of the rotating filter element 200 has a filter element inlet surface 210, which is located inside the filter chamber 130. The lower end of the rotating filter element 200 has a filter element outlet 220, which is located inside the temporary storage chamber 140. A collection box 400 is located on the outer wall of the processing box 100 and is connected to the slag discharge port 131.

[0027] For example, such as Figure 1 and Figure 2 As shown, the treatment tank 100 has an inlet 110 on its upper side, through which wastewater to be treated is input. A dividing disc 120 is fixed inside the treatment tank 100, remaining stationary. The dividing disc 120 divides the treatment tank 100 into an upper filtration chamber 130 and a lower temporary storage chamber 140, which are relatively sealed. A slag discharge port 131 is provided on the side wall of the filtration chamber 130 for discharging impurities. (Refer to...) Figure 2 , Figure 3 A rotary filter element 200 is inserted into a separating disc 120. The rotary filter element 200 is driven to rotate by a rotating device, meaning it can filter wastewater while rotating. A scraper 300 is connected to the rotary filter element 200 and rotates with it. The lower side of the scraper 300 presses against the upper side of the separating disc 120, performing a rotating scraping operation on the disc. The outer wall of the rotary filter element 200 has a filter element inlet surface 210 located within the filter chamber 130. The lower end of the rotary filter element 200 has a filter element outlet 220 located within a temporary storage chamber 140. Wastewater in the filter chamber 130 can pass through the filter element inlet surface 210 into the rotary filter element 200 and then be discharged from the filter element outlet 220 into the temporary storage chamber 140. The collection box 400 is located on the outer wall of the processing box 100, and is responsible for collecting impurities. The collection box 400 is connected to the slag discharge port 131 and is used to collect the impurities discharged from the slag discharge port 131.

[0028] Reference Figure 4 In actual wastewater pretreatment, the wastewater to be treated enters the filter chamber 130 of the treatment tank 100 through the inlet 110. In this way, the wastewater in the filter chamber 130 can pass through the filter element input surface 210 and enter the rotating filter element 200 to purify the wastewater.

[0029] Meanwhile, the rotating device drives the rotating filter element 200 to rotate, and the impurities attached to the filter element input surface 210 of the rotating filter element 200 are thrown out under the action of centrifugal force and fall onto the separating disc 120. Since the scraper 300 rotates with the rotating filter element 200, the scraper 300 can rotate and scrape the separating disc 120, scraping up the impurities that fall onto the separating disc 120, and under the action of centrifugal force, they are thrown to the slag discharge port 131 and discharged into the collection box 400 for collection.

[0030] The treated water that has been initially filtered by the rotary filter element 200 is discharged from the filter element outlet 220 into the temporary storage chamber 140 for subsequent treatment.

[0031] During the above process, the rotating filter element 200 rotates while filtering wastewater, which prevents impurities from clogging the filter element 200. In conjunction with the rotating scraper 300, impurities falling onto the separating disc 120 are scraped onto the collection box 400 and collected, ensuring continuous wastewater pretreatment and improving wastewater treatment efficiency.

[0032] It must be noted that, since the dividing disc 120 divides the inner cavity of the treatment chamber 100 into two relatively independent chambers—the upper filtration chamber 130 and the lower temporary storage chamber 140—the edge of the dividing disc 120 needs to be sealed to the inner wall of the treatment chamber 100. Under this premise, the dividing disc 120 and the treatment chamber 100 can be integrally molded to ensure no gaps or water leakage between them. Alternatively, the dividing disc 120 and the treatment chamber 100 can be detachably connected. For example, the edge of the dividing disc 120 can be connected to the inner wall of the treatment chamber 100 via a snap-fit ​​connection, and a sealing ring can be provided between the edge of the dividing disc 120 and the inner wall of the treatment chamber 100.

[0033] In some embodiments of this utility model, reference is made to Figure 1 , Figure 2 The upper side of the treatment box 100 is provided with a motor mounting chamber 150, and a rotary motor 151 is provided in the motor mounting chamber 150. The rotary motor 151 serves as a rotating device and can drive the rotary filter element 200 to rotate around the vertical axis, which facilitates the control of the rotary filter element 200 to rotate continuously.

[0034] In some specific embodiments of this utility model, the rotary motor 151 has a motor shaft 152 on its lower side, and the motor shaft 152 is connected to the upper end of the rotary filter element 200.

[0035] In some specific embodiments of this utility model, the motor mounting chamber 150 adopts a waterproof box structure.

[0036] In some embodiments of this utility model, reference is made to Figure 2 The separating disc 120 has a conical plate structure with a conical surface 121. The slag discharge port 131 is located on the lower side of the conical surface 121. Impurities on the separating disc 120 can slide along the conical surface 121 to the inner wall of the filter chamber 130 and enter the slag discharge port 131. The design of the conical surface 121 makes it easier for impurities on the separating disc 120 to be thrown into the collection box 400.

[0037] In some specific embodiments of this utility model, the lower edge of the conical surface 121 is level with or higher than the lower horizontal position of the slag discharge port 131, making it easier for impurities to enter the collection box 400 and preventing impurities from being stuck outside the slag discharge port 131. Furthermore, the horizontal position of the edge of the lower end face of the separating disc 120 cannot be higher than the lower horizontal position of the slag discharge port 131, preventing impurities from flowing directly into the temporary storage chamber 140 from below the slag discharge port 131.

[0038] Preferably, the lower edge of the conical surface 121 is flush with the horizontal position of the lower end of the slag discharge port 131.

[0039] In some specific embodiments of this utility model, the area of ​​the lower horizontal cross section of the separator disk 120 is greater than the area of ​​the upper horizontal cross section, ensuring that the cone surface 121 has sufficient inclination to guide impurities on the separator disk 120 into the collection box 400.

[0040] In some embodiments of this utility model, the rotating filter element 200 adopts a filter screen cylinder structure.

[0041] In some embodiments of this utility model, reference is made to Figure 2 , Figure 6 The wastewater pretreatment device of this utility model also includes a scraper mounting ring 310, with a scraper 300 connected to the upper part of the scraper mounting ring 310. The scraper mounting ring 310 has an inner mounting hole 311, into which the rotating filter element 200 is inserted, and the inner mounting hole 311 is fixedly connected to the rotating filter element 200. A rotating guide hole 122 is provided on the separating disc 120, and the lower part of the scraper mounting ring 310 is inserted into the rotating guide hole 122. The scraper mounting ring 310 can rotate with the rotating filter element 200 on the separating disc 120, driving the scraper 300 to rotate.

[0042] The scraper mounting ring 310 adopts a ring structure design, with the scraper 300 fixedly mounted on its upper part to form a stable scraping mechanism. An inner mounting hole 311 is provided at the center of the scraper mounting ring 310. This hole is matched with the size of the rotating filter element 200 to ensure that the rotating filter element 200 can be tightly inserted into the inner mounting hole 311 to achieve synchronous rotation.

[0043] The lower extension of the scraper mounting ring 310 is precision-machined to fit into a specially designed rotating guide hole 122 on the separator disc 120, ensuring that the scraper mounting ring 310 is stably inserted into the rotating guide hole 122. This guarantees the stability and reliability of the entire scraping mechanism during operation. This structural design not only achieves the linkage between the scraper 300 and the rotating filter element 200, but also ensures precise matching and coordinated operation between the various components of the device.

[0044] In some specific embodiments of this utility model, the scraper mounting ring 310 and the mounting scraper 300 are integrally formed to form a detachable scraping mechanism, which facilitates the overall disassembly and assembly of the scraping mechanism.

[0045] In some specific embodiments of this utility model, the wall of the inner mounting hole 311 is fixedly connected to the outer wall of the rotating filter element 200 by a snap-fit ​​structure, ensuring that the scraper mounting ring 310 can rotate together with the rotating filter element 200.

[0046] In some specific embodiments of this utility model, the inner mounting hole 311 is a non-circular hole, and the outer wall of the rotating filter element 200 is provided with a non-circular part. The non-circular part is inserted into the non-circular hole to ensure that the scraper mounting ring 310 rotates together with the rotating filter element 200.

[0047] In some specific embodiments of this utility model, the rotating guide hole 122 is equipped with a sealed bearing. The sealed bearing is connected to the outer wall of the scraper mounting ring 310 and the hole wall of the rotating guide hole 122. The sealed bearing can guide the scraper 300 to rotate, ensuring that the rotational connection between the outer wall of the scraper mounting ring 310 and the hole wall of the rotating guide hole 122 is not easy to loosen, and at the same time, preventing wastewater from flowing into the temporary storage chamber 140 from the gap between the scraper mounting ring 310 and the rotating guide hole 122.

[0048] In some embodiments of this utility model, reference is made to Figure 6 , Figure 7The scraper 300 includes a scraping brush portion 330, with an elastic brush strip 331 disposed on the lower side of the scraping brush portion 330. A spring 332 is disposed between the lower side of the scraping brush portion 330 and the upper side of the elastic brush strip 331. The lower side of the elastic brush strip 331 presses against the upper side of the separating disc 120. That is, the scraper 300 applies pressure to the separating disc 120 through the elastic brush strip 331 on the lower side of the scraping brush portion 330 to perform scraping work. The spring 332 allows the elastic brush strip 331 to be finely adjusted to match the upper surface of the separating disc 120, ensuring that the elastic brush strip 331 fits the separating disc 120 sufficiently, and ensuring that the subsequent scraping effect on the impurities on the separating disc 120 is reliable enough.

[0049] For example, the scraper 300 also includes a scraper fixing part 320, and the scraping part 330 can be connected to the upper side of the scraper mounting ring 310 through the scraper fixing part 320, so as to ensure that the scraping part 330 can rotate to achieve the scraping work on the dividing disc 120.

[0050] In some embodiments of this utility model, reference is made to Figure 2 , Figure 3 A return port 141 is provided on the outer wall of the temporary storage chamber 140. The collection box 400 has an upper collection inlet 410 and a lower collection outlet 420. The collection inlet 410 is connected to the slag discharge port 131, and the collection outlet 420 is connected to the return port 141. A collection box switch structure 430 is provided on the collection inlet 410, which can control the opening or closing of the collection inlet 410. A filter screen 440 is provided between the collection outlet 420 and the return port 141.

[0051] Impurities scraped off by scraper 300 are thrown towards the inner wall of filter chamber 130 by centrifugal force and pass through slag discharge port 131 and collection inlet 410 into collection box 400.

[0052] The filter screen 440 needs to seal the collection outlet 420 and the return outlet 141 to prevent impurities from leaking into the storage chamber 140 through the gaps between the edge of the filter screen 440 and the wall of the collection outlet 420 or the return outlet 141, thus ensuring the filtration effect of the filter screen 440. During the scraping process, in addition to impurities entering the collection box 400, some wastewater also enters the collection box 400. The wastewater entering the collection box 400 can pass through the filter screen 440 and flow into the storage chamber 140 through the collection outlet 420 and the return outlet 141. This ensures that some of the wastewater entering the storage chamber 140 from the collection box 400 has been filtered by the filter screen 440.

[0053] When it is time to clean the collection box 400, the collection inlet 410 can be closed by controlling the collection box switch structure 430, and the collection box 400 will stop receiving impurities. This makes it convenient to clean the collection box 400.

[0054] It is conceivable that, due to the limited volume of the collection box 400 and the small cross-sectional area of ​​the collection inlet 410 and the collection outlet 420, the amount of wastewater filtered by the aforementioned filter screen 440 will be relatively limited and will not conflict with the filtration operation of the rotating filter element 200.

[0055] In some specific embodiments of this utility model, the slag discharge port 131 and the return port 141 on the side wall of the collection box 400 are two independent through-hole structures. The separation position between the edge of the separating disc 120 and the slag discharge port 131 and the return port 141 on the side wall of the collection box 400 is also sealed, ensuring that impurities will not flow downward into the temporary storage chamber 140 through the position between the upper slag discharge port 131 and the return port 141. The filter screen plate 440 acts to block the return port 141, thus also preventing impurities from flowing downward into the temporary storage chamber 140 through the position between the upper slag discharge port 131 and the return port 141.

[0056] In addition, by connecting the filter screen 440 to the dividing disc 120 at the edge, it can also be ensured that the filter screen 440 prevents impurities from flowing downward into the temporary storage chamber 140 through the position between the upper slag discharge port 131 and the return port 141.

[0057] In a further embodiment of this utility model, the edge of the filter screen 440 is fixedly connected to the wall of the collection outlet 420 or the side wall of the collection box 400. Under this premise, the filter screen 440 can be fixedly installed by screws, slot structures, snap-fit ​​structures or similar connection structures in the prior art.

[0058] In some embodiments of this utility model, reference is made to Figure 5 The collection box 400 contains a mesh box 450. A replacement opening 401 is provided on the side wall of the collection box 400. A removable sealing plate 460 covers the replacement opening 401, allowing the mesh box 450 to be installed and removed through the replacement opening 401. Impurities inside the collection box 400 are collected in the mesh box 450. If the collection box 400 becomes too full and needs cleaning, simply remove the sealing plate 460 to remove the mesh box 450 and empty the impurities. The mesh box 450 has a mesh structure, allowing it to hold impurities without trapping water.

[0059] It is conceivable that, if necessary, the water accumulated in the collection box 400 can also be drained by replacing the opening 401.

[0060] In a further embodiment of the present invention, the inner bottom wall of the collection box 400 has a bottom slope 403, and the accumulated water can flow to the collection outlet 420 along the bottom slope 403.

[0061] In some embodiments of this utility model, the collection box switch structure 430 includes a screw 431 and a sealing plate 432. The screw 431 is connected to the upper side of the collection box 400, and the sealing plate 432 is threadedly connected to the screw 431. The screw 431 can rotate to drive the sealing plate 432 to move along the extension direction of the screw 431. The sealing plate 432 can block or open the collection inlet 410.

[0062] In actual operation, the collection box switch structure 430 works by rotating the screw 431, whose thread drives the sealing plate 432. For example, rotating the screw 431 forward causes the sealing plate 432 to move closer to the collection inlet 410 until it blocks the inlet, thus closing it. Similarly, rotating the screw 431 in the opposite direction moves the sealing plate 432 away from the inlet, allowing it to open. This allows for flexible control of the collection inlet 410's opening and closing.

[0063] It is conceivable that, due to gravity, when impurities flow into the collection box 400, they will not adhere to the screw 431 on the upper side of the collection box 400, but will fall into the lower side of the collection box 400 or adhere to the side wall of the collection box 400.

[0064] In a further embodiment of this utility model, a screw bearing 404 is provided on the side wall of the collection box 400. The screw bearing 404 is fitted onto the screw 431 and is used to guide the screw 431 to rotate.

[0065] In a further embodiment of this utility model, a guide groove 402 is provided on the inner top wall of the collection box 400, and a guide block 433 is provided on the upper side of the sealing plate 432. The guide block 433 is inserted into the guide groove 402, and the guide groove 402 can guide the guide block 433 to move. When the screw 431 is rotated, the guide groove 402 of the collection box 400 can guide the guide block 433 of the sealing plate 432 to move, thus ensuring that the movement of the sealing plate 432 is sufficiently smooth and reliable.

[0066] The MVR wastewater treatment apparatus according to a second aspect embodiment of the present invention includes the wastewater pretreatment apparatus according to the first aspect embodiment of the present invention, with reference to... Figure 1 It also includes an MVR evaporator 500, which is connected to the temporary storage chamber 140 via a suction pipe 510, and a suction pump 520 is installed on the suction pipe 510. The filtered treated water is in the temporary storage chamber 140. By starting the suction pump 520, the treated water in the temporary storage chamber 140 can be drawn out through the suction pipe 510 and sent to the MVR evaporator 500 for the evaporation process.

[0067] According to the embodiments of the present invention, the MVR wastewater treatment device reduces the difficulty of wastewater treatment by adopting the above-mentioned wastewater pretreatment device, facilitates the simplified design of the MVR wastewater treatment device, and improves the durability of the MVR wastewater treatment device.

[0068] Other components and operations of the wastewater treatment device according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0069] The following is for reference. Figure 1 and Figure 2 The wastewater pretreatment apparatus according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0070] like Figure 1 and Figure 2 As shown, the MVR wastewater treatment device according to an embodiment of the present invention includes a treatment tank 100, a rotary filter element 200, a scraper 300, a collection tank 400, and an MVR evaporator 500.

[0071] The processing tank 100 is equipped with an inlet 110, a dividing disc 120, and a motor mounting chamber 150. A filter chamber 130 and a temporary storage chamber 140 are located on the upper and lower sides of the dividing disc 120. The dividing disc 120 is provided with a conical surface 121 and a rotating guide hole 122. The filter chamber 130 has a slag discharge port 131. The temporary storage chamber 140 has a reflux port 141. A rotary motor 151 is installed in the motor mounting chamber 150, and the rotary motor 151 has a motor shaft 152. The MVR evaporator 500 is connected to the temporary storage chamber 140 via a suction pipe 510 and a suction pump 520.

[0072] The motor shaft 152 is connected to the rotating filter element 200. The rotating filter element 200 has a filter element inlet surface 210 and a filter element outlet 220. A scraper mounting ring 310 is mounted on the rotating filter element 200. Scrapers 300 are distributed on the scraper mounting ring 310. The scraper mounting ring 310 has an inner mounting hole 311. The scraper 300 includes a scraper fixing part 320, a scraping brush part 330, an elastic brush strip 331, and a spring 332.

[0073] Collection boxes 400 are provided on both the front and rear sides of the treatment box 100. Each collection box 400 has a replacement opening 401, a guide groove 402, a bottom slope 403, a screw bearing 404, a collection inlet 410, and a collection outlet 420. The collection box switching structure 430 includes a screw 431, a sealing plate 432, and a guide block 433. The collection box 400 is equipped with a filter screen 440, a mesh box 450, and a sealing plate 460.

[0074] In some embodiments of this utility model, the steps are as follows during actual operation; Wastewater enters the filter chamber 130 of the treatment tank 100 through the inlet 110. This allows the wastewater in the filter chamber 130 to pass through the filter element inlet 210 and enter the rotating filter element 200 for purification. Simultaneously, the rotating device drives the rotating filter element 200 to rotate, causing impurities adhering to the filter element inlet 210 to be thrown off by centrifugal force and fall onto the separating disc 120. As the rotating filter element 200 rotates, the scraper 300 follows the rotation. When the two elements rotate together, the scraper 300 can rotate and scrape the separating disc 120, scraping up the impurities that fall on the separating disc 120. Under the action of centrifugal force, the impurities are thrown to the slag discharge port 131 and discharged into the collection box 400 for collection. The treated water that has been initially filtered by the rotating filter element 200 is discharged from the filter element output port 220 into the temporary storage chamber 140. The water suction pump 520 sucks the treated water in the temporary storage chamber 140 out through the water suction pipe 510 and sends it into the MVR evaporator 500 for the evaporation process. According to the wastewater pretreatment device of this utility model embodiment, by setting it up in this way, at least the following effects can be achieved: the wastewater to be treated enters the filter chamber 130 of the treatment tank 100 through the inlet 110, so that the wastewater in the filter chamber 130 can pass through the filter element input surface 210 and enter the rotating filter element 200 to carry out the purification work of the wastewater; the rotating device drives the rotating filter element 200 to rotate, and the impurities attached to the filter element input surface 210 of the rotating filter element 200 are thrown out under the action of centrifugal force and fall onto the separating disc 120; since the rotating filter element 200 rotates, the scraper 300 rotates with the rotating filter element 200, and the scraper 300 can rotate and scrape the separating disc 120, scraping up the impurities that fall on the separating disc 120, and under the action of centrifugal force, they are thrown to the slag discharge port 131 and discharged into the collection box 400 for collection.

[0075] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" 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 present 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.

[0076] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wastewater pretreatment device, characterized in that, include: A treatment tank (100) has an inlet (110) on its upper side. A dividing disc (120) is fixed inside the treatment tank (100). The dividing disc (120) divides the treatment tank (100) into an upper filtration chamber (130) and a lower temporary storage chamber (140). A slag discharge port (131) is provided on the side wall of the filtration chamber (130). A rotating filter element (200) is inserted into the dividing disc (120). The rotating filter element (200) is driven to rotate by a rotating device. A scraper (300) is connected to the rotating filter element (200). The lower side of the scraper (300) abuts against the upper side of the dividing disc (120). The outer wall of the rotating filter element (200) has a filter element inlet surface (210). The filter element inlet surface (210) is located in the filter chamber (130). The lower end of the rotating filter element (200) has a filter element outlet (220). The filter element outlet (220) is located in the temporary storage chamber (140). A collection box (400) is located on the outer wall of the processing box (100), and the collection box (400) is connected to the slag discharge port (131).

2. The wastewater pretreatment device according to claim 1, characterized in that, The processing box (100) is provided with a motor mounting chamber (150) on the upper side, and a rotary motor (151) is provided in the motor mounting chamber (150). The rotary motor (151) serves as the rotating device and can drive the rotary filter element (200) to rotate around the vertical axis.

3. The wastewater pretreatment device according to claim 1, characterized in that, The separating disc (120) has a conical plate structure and a conical surface (121). The slag discharge port (131) is located on the lower side of the conical surface (121). Impurities on the separating disc (120) can slide along the conical surface (121) to the inner wall of the filter chamber (130) and enter the slag discharge port (131).

4. The wastewater pretreatment device according to claim 1, characterized in that, It also includes a scraper mounting ring (310), the scraper (300) being connected to the upper part of the scraper mounting ring (310); The scraper mounting ring (310) has an inner mounting hole (311), the rotating filter element (200) is inserted into the inner mounting hole (311), and the inner mounting hole (311) is fixedly connected to the rotating filter element (200); The dividing disc (120) has a rotating guide hole (122), and the lower part of the scraper mounting ring (310) is inserted into the rotating guide hole (122). The scraper mounting ring (310) and the rotating guide hole (122) are rotatably connected.

5. The wastewater pretreatment device according to claim 1, characterized in that, The scraper (300) includes a scraping brush portion (330), and an elastic brush strip (331) is provided on the lower side of the scraping brush portion (330). A spring (332) is provided between the lower side of the scraping brush portion (330) and the upper side of the elastic brush strip (331). The lower side of the elastic brush strip (331) presses against the upper side of the separating disc (120).

6. The wastewater pretreatment device according to claim 1, characterized in that, The temporary storage chamber (140) has a reflux port (141) on its outer wall. The collection box (400) has an upper collection inlet (410) and a lower collection outlet (420). The collection inlet (410) is connected to the slag discharge port (131), and the collection outlet (420) is connected to the reflux port (141). The collection inlet (410) is provided with a collection box switch structure (430), which can control the collection inlet (410) to open or close; A filter screen (440) is provided between the collection outlet (420) and the return outlet (141).

7. The wastewater pretreatment device according to claim 6, characterized in that, The collection box (400) is equipped with a mesh box (450). A replacement opening (401) is provided on the side wall of the collection box (400). A detachable sealing plate (460) is covered on the replacement opening (401). The mesh box (450) can be disassembled and installed through the replacement opening (401).

8. The wastewater pretreatment device according to claim 6, characterized in that, The collection box switch structure (430) includes a screw (431) and a sealing plate (432). The screw (431) is connected to the upper side of the collection box (400), and the sealing plate (432) is threadedly connected to the screw (431). The screw (431) can rotate to drive the sealing plate (432) to move along the extension direction of the screw (431). The sealing plate (432) can block or open the collection inlet (410).

9. The wastewater pretreatment device according to claim 8, characterized in that, The collection box (400) has a guide groove (402) on its inner top wall, and a guide block (433) is provided on the upper side of the sealing plate (432). The guide block (433) is inserted into the guide groove (402), and the guide groove (402) can guide the guide block (433) to move.

10. An MVR wastewater treatment device, characterized in that, The wastewater pretreatment device according to any one of claims 1 to 9 further includes an MVR evaporator (500), which is connected to the temporary storage chamber (140) via a suction pipe (510), and a suction pump (520) is provided on the suction pipe (510).

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