Ammonia-containing wastewater recovery device

Abstract

The utility model discloses an ammonia-containing wastewater recovery device, which relates to the technical field of wastewater treatment and comprises a treatment box body with an inlet and an outlet, a filter screen arranged in the treatment box body and positioned above the outlet, and a stirring component arranged in the treatment box body and positioned above the filter screen, the stirring assembly comprises a rotating shaft rotationally arranged in the treatment box body, and a follower is movably arranged on the rotating shaft and can move towards the filter screen along with gradual increase of the rotating speed of the rotating shaft. The follow-up piece in the stirring assembly has two working states, in the first working state, the follow-up piece rotates along with the rotating shaft, and the stirring rod and the follow-up piece can stir waste water; in the second working state, the rotating speed of the rotating shaft is increased, so that the follower impacts the filter screen, and impurities and the like clamped on the filter screen can be vibrated down; the two working states are matched for use, so that the filter screen is conveniently cleaned, the cleaning effect is good, and the wastewater treatment efficiency and the cleanliness of the filter screen are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an ammonia-containing wastewater recovery device. Background Technology

[0002] Urea production generates a large amount of ammonia-containing wastewater. If this wastewater is not treated, it can overflow into ditches, increasing the conductivity of the wastewater in sewage ponds and raising wastewater treatment costs. Therefore, ammonia-containing wastewater from urea production is typically recycled. Specifically, a centrifugal pump transports the wastewater to a treatment tank equipped with filters. Flocculants are then added to the tank to filter out impurities and the resulting flocculants. A mixing mechanism further ensures the flocculants and wastewater are thoroughly mixed. The treated liquid can then be used in the desulfurization and denitrification sections and ammonia preparation sections of the power plant.

[0003] A search revealed that patent document CN221868156U discloses a stirring and filtering device for the production of water-based stone paint. This device includes a stirring tank, a stirring assembly, and a filtering assembly. The stirring tank has a feed pipe and a first motor on its top outer side. The stirring assembly is located inside the stirring tank and is driven to rotate by the first motor. A bracket is fixedly installed on the top inner wall of the stirring tank, and a toothed ring is welded to the bottom of the bracket. A gear is located on the top of the stirring assembly and meshes with the toothed ring. The filtering assembly is located on the bottom outer side of the stirring tank. The filtering assembly includes a transmission pipe, a second motor, a screw rod, a sealing cap, and a filter box. The second motor is fixedly installed at the right end of the transmission pipe, and a screw rod located inside the transmission pipe is installed at the output end of the second motor. A sealing cap is threaded to the left outer side of the transmission pipe, and a filter box is bolted to the lower right side of the transmission pipe.

[0004] When in use, the aforementioned equipment utilizes a stainless steel filter screen at the top of the filter box to filter out solid particulate impurities mixed in with the stone paint. A second motor controls the rotation of a screw rod, which gently pushes the filtered impurities to the left, preventing them from accumulating on the filter screen. However, during the filtration process, if the size of the impurities matches the mesh size of the filter screen, the impurities can easily get stuck inside the mesh, causing filter clogging. Simultaneously, during the pushing and cleaning process, the pushing action can also push impurities accumulated on the filter screen that match the mesh size into the mesh, further clogging the filter and reducing its filtration efficiency, requiring frequent cleaning of the filter screen.

[0005] To address these technical problems, we propose an ammonia-containing wastewater recovery device. Utility Model Content

[0006] The purpose of this invention is to solve the problems in the prior art by proposing an ammonia-containing wastewater recovery device. This wastewater treatment device effectively improves wastewater treatment efficiency and filter cleanliness through the design of a filter screen located above the outlet and a stirring component that moves closer to the filter screen as the rotation speed increases.

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] An ammonia-containing wastewater recovery device includes a treatment tank with an inlet and an outlet, a filter screen disposed inside the treatment tank and above the outlet, and a stirring assembly disposed inside the treatment tank and above the filter screen. The stirring assembly includes a rotating shaft disposed rotatably inside the treatment tank, and a follower is movably disposed on the rotating shaft. The follower tends to move closer to the filter screen as the rotation speed of the rotating shaft gradually increases.

[0009] As a further embodiment of this utility model: the stirring assembly further includes a plurality of stirring rods fixedly disposed on the rotating shaft, and the plurality of stirring rods are arranged along the length direction of the rotating shaft, and a connecting plate for the movable installation of the follower is fixedly disposed between any two adjacent rotating shafts.

[0010] As a further embodiment of this utility model: the follower includes a follower rod movably mounted on the connecting plate, and the connecting plate is provided with an elastic element fixedly connected to the follower rod, so that the elastic element is compressed when the follower rod approaches the filter screen.

[0011] As a further embodiment of this utility model: a stop block is fixedly provided at the end of the follower rod away from the rotating shaft, and the end of the stop block away from the rotating shaft is set in an arc shape.

[0012] As a further embodiment of this utility model: a roller is rotatably provided at the end of the follower rod away from the rotating shaft.

[0013] As a further embodiment of this utility model: the filter screen is composed of two sets of filter screen units, which are arranged opposite to each other and respectively hinged to the inner wall of the processing box, and the two sets of filter screen units are locked together by fasteners.

[0014] As a further embodiment of this utility model, the fastener is a positioning pin.

[0015] As a further embodiment of this utility model: the elastic element is a return spring, and the return spring is sleeved on the follower rod.

[0016] As a further embodiment of this utility model: a drive motor connected to the rotating shaft is provided outside the processing box.

[0017] As a further embodiment of this utility model, a control valve is provided at the outlet of the processing box.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This recycling device features a unique design. The follower component in the stirring assembly has two working states. In the first working state, the follower component rotates with the rotating shaft, and the stirring rod and follower component can stir the wastewater. In the second working state, the rotation speed of the rotating shaft is increased, causing the follower component to impact the filter screen, thereby shaking off impurities stuck on the filter screen. The two working states can be used interchangeably to achieve convenient cleaning of the filter screen with good cleaning effect, effectively improving wastewater treatment efficiency and filter screen cleanliness.

[0020] 2. The device adds multiple stirring rods to the stirring assembly and sets up a connecting plate for the movable installation of the follower, which further enhances the stirring effect and improves the uniformity and efficiency of wastewater treatment;

[0021] 3. The follower is a follower rod that is movably mounted on the connecting plate, and an elastic element is set to be fixedly connected to the follower rod. This allows the follower rod to be buffered by the elastic force when it approaches the filter screen, protecting the filter screen and the stirring assembly, while improving the stability and durability of the device.

[0022] 4. The filter consists of two sets of filter units, which are hinged and installed on the inner wall of the processing chamber and locked together by fasteners. This design facilitates the disassembly and replacement of the filter, improves the service life and filtration effect of the filter, and the tilt of the filter unit can also guide the impurities temporarily stored on it to the outlet, through which the impurities are discharged.

[0023] 5. The elastic element adopts a return spring and is sleeved on the follower rod. This design allows the follower rod to quickly return to its original position when subjected to external force, ensuring the stability and reliability of the stirring assembly.

[0024] 6. A striking block is fixedly installed at the end of the follower rod away from the rotating shaft, and the end of the striking block away from the rotating shaft is set in an arc shape. This design can more effectively impact the filter screen, improve the cleaning effect of the filter screen, and at the same time avoid damage to the filter screen by the striking block.

[0025] 7. The rollers that rotate at the end of the follower rod away from the shaft reduce friction between the follower rod and the filter screen, thereby reducing energy consumption and noise, while also improving the stability and durability of the device. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a cross-sectional structural schematic diagram of Embodiment 1 of this utility model;

[0028] Figure 2 This is a cross-sectional view of Embodiment 2 of this utility model;

[0029] Figure 3 This is a cross-sectional structural diagram of Embodiment 3 of this utility model;

[0030] Figure 4 This is a cross-sectional structural diagram of Embodiment 4 of this utility model.

[0031] In the diagram: 1. Processing chamber; 101. Inlet; 102. Outlet; 2. Filter screen; 3. Rotating shaft; 4. Stirring rod; 5. Connecting plate; 6. Follower rod; 7. Elastic element; 8. Fastener; 9. Drive motor; 10. Control valve; 11. Impact block; 12. Roller. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1:

[0034] like Figure 1 As shown, an ammonia-containing wastewater recovery device includes a treatment tank 1. The top and bottom of the treatment tank 1 are respectively equipped with an inlet 101 and an outlet 102. A control valve 10 is installed at the outlet 102. Wastewater to be treated, along with flocculants, is conveyed into the treatment tank 1 via the inlet 101, and the treated wastewater is discharged from the treatment tank 1 via the outlet 102. Simultaneously, a filter screen 2 is installed inside the treatment tank 1. The filter screen 2 consists of two sets of filter screen units, arranged opposite each other and hinged to the inner wall of the treatment tank 1. The two sets of filter screen units are locked together by fasteners 8. The filter screen 2 is used to filter the wastewater inside the treatment tank 1, ensuring that the wastewater discharged through the outlet 102 is free of impurities and flocculants. After filtration, the fasteners 8 can be released from the locking connection of the two filter screen units, allowing them to tilt and rotate, discharging any temporarily stored impurities through the outlet 102. It should be noted that the fastener 8 in this embodiment can be any technical means in the prior art, such as bolts, clips, etc.

[0035] In order to improve the mixing effect of wastewater and flocculants, this embodiment can also install a stirring component inside the treatment tank 1. The stirring component is located above the filter screen 2, so that the flocculants generated after stirring by the stirring component will be blocked by the filter screen 2. Then, by opening the control valve 10, the wastewater without impurities and flocculants can be discharged through the outlet 102.

[0036] Specifically, the stirring assembly includes a rotating shaft 3 rotatably disposed inside the treatment chamber 1, a drive motor 9 externally disposed and connected to the rotating shaft 3, and multiple stirring rods 4 fixedly disposed on the rotating shaft 3. The multiple stirring rods 4 are arranged along the length direction of the rotating shaft 3, and a connecting plate 5 is fixedly disposed between any two adjacent rotating shafts 3. In use, the drive motor 9 drives the rotating shaft 3 to rotate, so that the connecting plate 5 and the stirring rods 4 move accordingly, thereby achieving uniform stirring treatment of wastewater.

[0037] In order to remove the impurities stuck on the filter screen 2 without disassembling it, this embodiment has a follower movably mounted on the rotating shaft 3. Figure 1 Taking the central rotating shaft 3 as an example with the horizontal direction, the follower is set to the vertical direction. The rotating shaft 3 is used for stirring. The drive motor 9 drives the rotating shaft 3 to maintain a constant speed. The follower will not contact the filter screen 2. The connecting plate 5, the follower, and the stirring rod 4 can all stir and treat the wastewater. After the treatment box 1 and the stirring assembly have finished filtering the wastewater, it is necessary to clean the impurities stuck on the filter screen 2. At this time, the drive motor 9 can be used to drive the rotating shaft 3 to rotate at a high speed until the follower can contact the filter screen 2 and produce an impact on the filter screen 2. This impact can shake off the impurities stuck on the filter screen 2, realizing convenient cleaning of the filter screen 2 with good cleaning effect.

[0038] Specifically, the follower component includes a follower rod 6 movably mounted on the connecting plate 5, and an elastic element 7 fixedly connected to the follower rod 6 is provided on the connecting plate 5. When the follower rod 6 approaches the filter screen 2, the elastic element 7 is compressed. When the rotation speed of the rotating shaft 3 is reduced, the follower rod 6 will return to its original position under the elastic reset action of the elastic element 7. It should be noted that the elastic element 7 can be any component with elastic properties in the prior art, such as a rubber strip or a return spring. When the elastic element 7 is set as a return spring, in order to improve stability, the return spring can be sleeved on the follower rod 6.

[0039] Based on the design of the follower rod 6, in order to extend the service life of the follower rod 6 and improve the cleaning effect on the filter screen 2, a striking block 11 can be fixedly installed at the end of the follower rod 6 away from the rotating shaft 3. The striking block 11 can be made of soft material. Through the design of the striking block 11, the impact contact area on the filter screen 2 can be increased, thereby making the filter screen 2 vibrate better. After the striking block 11 is damaged after long-term use, a new striking block 11 can be replaced without replacing the entire follower rod 6.

[0040] Example 2:

[0041] like Figure 2As shown, the difference between this embodiment and embodiment one is that, based on embodiment one, the end of the impact block 11 away from the rotating shaft 3 is set to be arc-shaped. This design allows the impact block 11 to move on the filter screen 2 by relying on its arc-shaped end after impacting the filter screen 2, thus reducing the walking resistance encountered by the impact block 11 when rotating.

[0042] Example 3:

[0043] like Figure 3 As shown, the difference between this embodiment and any of the above embodiments is that in this embodiment, a roller 12 is rotatably provided at the end of the follower rod 6 away from the rotating shaft 3. This design allows the impact block 11 to move on the filter screen 2 by relying on the roller 12 after the impact block 11 collides with the filter screen 2, further reducing the walking resistance encountered by the impact block 11 when rotating.

[0044] Example 4:

[0045] like Figure 4 As shown, the difference between this embodiment and any of the above embodiments is that in this embodiment, both the stirring component and the filter screen 2 are inclined inside the processing box 1. At this time, impurities blocked by the filter screen 2 will roll down the slope to the lower right of the filter screen 2 for temporary storage and collection.

[0046] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An ammonia-containing wastewater recovery device, characterized in that, The device includes a processing chamber (1) with an inlet (101) and an outlet (102), a filter screen (2) disposed inside the processing chamber (1) and above the outlet (102), and a stirring assembly disposed inside the processing chamber (1) and above the filter screen (2). The stirring assembly includes a rotating shaft (3) rotatably disposed inside the processing chamber (1), and a follower is movably disposed on the rotating shaft (3). The follower has a tendency to move closer to the filter screen (2) as the rotation speed of the rotating shaft (3) gradually increases.

2. The ammonia-containing wastewater recovery device according to claim 1, characterized in that, The stirring assembly also includes a plurality of stirring rods (4) fixedly mounted on the rotating shaft (3), and the plurality of stirring rods (4) are arranged along the length direction of the rotating shaft (3). A connecting plate (5) for the movable installation of the follower is fixedly provided between any two adjacent rotating shafts (3).

3. The ammonia-containing wastewater recovery device according to claim 2, characterized in that, The follower includes a follower rod (6) movably mounted on the connecting plate (5), and the connecting plate (5) is provided with an elastic element (7) fixedly connected to the follower rod (6) so that the elastic element (7) is compressed when the follower rod (6) approaches the filter screen (2).

4. The ammonia-containing wastewater recovery device according to claim 3, characterized in that, The follower rod (6) is fixedly provided with a strike block (11) at one end away from the rotating shaft (3), and the end of the strike block (11) away from the rotating shaft (3) is set in an arc shape.

5. The ammonia-containing wastewater recovery device according to claim 3, characterized in that, The follower rod (6) is rotatably equipped with a roller (12) at the end away from the rotating shaft (3).

6. An ammonia-containing wastewater recovery device according to any one of claims 1-5, characterized in that, The filter (2) consists of two sets of filter units, which are arranged opposite to each other and respectively hinged to the inner wall of the processing box (1). The two sets of filter units are locked together by fasteners (8).

7. The ammonia-containing wastewater recovery device according to claim 6, characterized in that, The fastener (8) is a positioning pin.

8. An ammonia-containing wastewater recovery device according to any one of claims 3-5, characterized in that, The elastic element (7) is a return spring, and the return spring is sleeved on the follower rod (6).

9. An ammonia-containing wastewater recovery device according to any one of claims 1-5, characterized in that, The processing box (1) is equipped with a drive motor (9) that is connected to the rotating shaft (3) for transmission.

10. An ammonia-containing wastewater recovery device according to any one of claims 1-5, characterized in that, A control valve (10) is provided at the outlet (102) of the processing box (1).

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