Sludge dewatering equipment

Abstract

The utility model relates to the technical field of sludge treatment, and discloses sludge dewatering equipment which comprises a dewatering cylinder, a feeding hopper is arranged at the top of the dewatering cylinder, a water collecting cover is connected to one side of the dewatering cylinder, a conveying piece for conveying sludge is arranged on the dewatering cylinder, a discharging cover capable of being opened and closed is hinged to the bottom of the dewatering cylinder, and the discharging cover is connected with a water outlet of the dewatering cylinder. The bottom of the water collecting cover is connected with a water discharging pipe, the bottom end of the water discharging pipe is connected with a water collecting tank, and a filtering part is arranged in the dewatering cylinder. The water spraying assembly comprises a second water distribution disc fixed on the inner wall of the water collection cover and a water pump arranged in the water collection tank; through the arrangement of the water spraying assembly, the filter plate can be backwashed, so that the filter screen is prevented from being blocked, mud and water can be quickly separated, the sludge treatment efficiency is greatly improved, and the efficient treatment of the sludge is further facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, in particular to a sludge dewatering device. Background Technique

[0002] Sludge is a product after sewage treatment in sewage treatment plants or sewage stations. In the process of sludge treatment, dewatering is one of the sludge treatment processes. When dewatering sludge, generally, a dewatering device is required to dewater the sludge to reduce the moisture content of the sludge, so as to facilitate the further treatment of the sludge.

[0003] In the Chinese patent with the publication number CN218951220U, a sludge dewatering device is disclosed. The sludge is introduced through the feed pipe, and the spiral feeding blade pushes the sludge towards the filter port. The stirring blades near the filter net stir the sludge to accelerate the flow of water in the sludge. Combining with the pressure of the front-end spiral feeding, the water in the sludge efficiently passes through the filter net and is discharged into the water collection tank. The remaining sludge can be conveniently discharged from the discharge port by opening the discharge cover. However, during the use of the above dewatering device, sludge often remains on the filter net. However, the dewatering device lacks a structure for flushing it, which easily leads to blockage of the filter net, making it difficult to quickly separate the muddy water, thereby affecting the efficiency of sludge treatment and being unfavorable for the efficient treatment of sludge. Summary of the Utility Model

[0004] The utility model provides a sludge dewatering device to solve the problem that sludge often remains on the existing filter net, is prone to blockage, and is unfavorable for the efficient treatment of sludge.

[0005] To achieve the above object, the utility model provides the following technical solution: A sludge dewatering device includes a dewatering cylinder. A feeding hopper is arranged at the top of the dewatering cylinder, and a water collection cover is connected to one side of the dewatering cylinder. A conveying member for conveying sludge is arranged on the dewatering cylinder, and an openable and closable discharge cover is hinged at the bottom of the dewatering cylinder. A drain pipe is connected to the bottom of the water collection cover, and the bottom end of the drain pipe is connected to a water collection tank. A filtering member is arranged inside the dewatering cylinder, and a drain valve is connected to one side of the water collection tank;

[0006] It further includes a water spraying assembly for backwashing the filtering member. The water spraying assembly includes a second water distribution plate fixed on the inner wall of the water collection cover and a water pump arranged inside the water collection tank. A uniformly distributed water spraying nozzle is installed on one side of the second water distribution plate, and the water outlet end of the water spraying nozzle faces the filtering member. The water outlet end of the water pump is connected to a water outlet pipe, and one end of the water outlet pipe extends to the outside of the water collection tank and is provided with a three-way valve. One end of the three-way valve is connected to a water delivery branch pipe, and one end of the water delivery branch pipe extends into the water collection cover and is communicated with the second water distribution plate.

[0007] Preferably, a flushing component for flushing the inside of the dehydration cylinder is further provided on the dehydration cylinder. The flushing component includes a first water distribution plate fixed on the inner wall of the dehydration cylinder and a main water supply pipe connected to the other end of the three-way valve. One end of the main water supply pipe extends into the dehydration cylinder and is communicated with the first water distribution plate, and a water outlet pipe for spraying water towards the conveying member is installed on one side of the first water distribution plate.

[0008] Preferably, the filter element includes a fixing plate, through holes are formed in the fixing plate, and a filter plate is installed in the through holes.

[0009] Preferably, the conveying member includes a screw conveyor rotatably installed inside the dehydration cylinder and a motor fixed on one side of the dehydration cylinder. The motor is used to drive the screw conveyor to rotate, and the screw conveyor is located between the first water distribution plate and the fixing plate.

[0010] Preferably, a filtering component is further provided on the water collecting tank. The filtering component includes a filter frame and a filter net installed in the middle of the filter frame. One side of the water collecting tank has a notch for inserting and removing the filter frame, and inserting strips are installed on both sides of the inner wall of the water collecting tank. A cover plate for sealing the notch is installed at one end of the filter frame, and inserting grooves for inserting the inserting strips are formed on both sides of the filter frame.

[0011] Preferably, positioning blocks are further installed on the inner wall of the water collecting tank, and positioning grooves matching the positioning blocks are formed on one side of the filter frame.

[0012] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0013] (1) Through the arrangement of the water spraying assembly, backwashing of the filter plate can be realized, thereby avoiding blockage of the filter net, rapid separation of muddy water can be achieved, the sludge treatment efficiency is greatly improved, and thus efficient treatment of sludge is facilitated;

[0014] (2) Through the arrangement of the flushing component, cleaning of the inside of the dehydration cylinder can be realized, avoiding scale formation due to residual sludge on the inner wall of the dehydration cylinder, which is beneficial to subsequent dehydration processing of sludge;

[0015] (3) Through the arrangement of the filtering component, re-filtering of water can be realized, and through the cooperation of the inserting strips and the inserting grooves, the detachable filtering component can be realized, thus facilitating cleaning of the filtering component, being beneficial to ensuring the cleaning effect of the filtering component, and further realizing the recycling of water. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is one of the sectional views of the present invention;

[0019] Figure 3 is another sectional view of the present invention;

[0020] Figure 4 is a schematic structural diagram of the filtering component;

[0021] Figure 5 is a schematic structural diagram when the filter plate and the fixing plate are separated;

[0022] Figure 6 is a schematic structural diagram of the water collecting tank;

[0023] Figure 7 is Figure 2 the enlarged view at position A in

[0024] In the figure: 1, dehydration cylinder; 2, feeding hopper; 3, water collecting cover; 4, discharge cover; 5, water collecting tank; 6, drain pipe; 7, filtering component; 71, filter rack; 72, filter net; 73, cover plate; 74, insertion slot; 75, positioning slot; 8, water supply branch pipe; 9, water supply main pipe; 10, drain valve; 11, auger; 12, first water distribution plate; 13, fixing plate; 14, filter plate; 15, second water distribution plate; 16, motor; 17, water pump; 18, insertion strip; 19, positioning block. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] Such as Figures 1-7As shown in the figure, a sludge dewatering device includes a dewatering cylinder 1. A feeding hopper 2 is provided at the top of the dewatering cylinder 1, and a water collecting hood 3 is connected to one side of the dewatering cylinder 1. A conveying member for conveying sludge is provided on the dewatering cylinder 1, and a switchable discharge cover 4 is hinged at the bottom of the dewatering cylinder 1. A drain pipe 6 is connected to the bottom of the water collecting hood 3, and the bottom end of the drain pipe 6 is connected to a water collecting tank 5. A filtering member is provided inside the dewatering cylinder 1, and a drain valve 10 is connected to one side of the water collecting tank 5;

[0027] It further includes a water spraying assembly for backwashing the filtering member. The water spraying assembly includes a second water distribution plate 15 fixed to the inner wall of the water collecting hood 3 and a water pump 17 provided inside the water collecting tank 5. A uniformly distributed water spraying nozzle is installed on one side of the second water distribution plate 15, and the water outlet end of the water spraying nozzle faces the filtering member. The water outlet end of the water pump 17 is connected to a water outlet pipe, and one end of the water outlet pipe extends outside the water collecting tank 5 and is provided with a three-way valve. One end of the three-way valve is connected to a water supply branch pipe 8, and one end of the water supply branch pipe 8 extends into the water collecting hood 3 and is communicated with the second water distribution plate 15.

[0028] Specifically, the filtering member includes a fixing plate 13. A water passing hole is opened on the fixing plate 13, and a filter plate 14 is installed in the water passing hole.

[0029] Specifically, the conveying member includes an auger 11 rotatably installed inside the dewatering cylinder 1 and a motor 16 fixed to one side of the dewatering cylinder 1. The motor 16 is used to drive the auger 11 to rotate, and the auger 11 is located between the first water distribution plate 12 and the fixing plate 13.

[0030] During sludge dewatering, sludge can be added into the dewatering cylinder 1 through the feeding hopper 2, and then the motor 16 drives the auger 11 to rotate, so that the auger 11 conveys the sludge in the dewatering cylinder 1, and the sludge is separated into mud and water through the fixing plate 13 and the filter plate 14. Subsequently, the water body flows into the water collecting hood 3 through the filter plate 14 and is discharged into the water collecting tank 5 through the drain pipe 6 for storage. When in use, it can be discharged through the drain valve 10 for external use to realize the recycling of water resources. Then, the discharge cover 4 can be opened to discharge the sludge through the mud outlet of the dewatering cylinder 1, thereby realizing the dehydration treatment of the sludge;

[0031] After the dehydration treatment, the water body in the water collecting tank 5 can be pumped out through the water pump 17, and the water body is conveyed into the second water distribution plate 15 through the water outlet pipe, the three-way valve and the water supply branch pipe 8. Subsequently, the water body is sprayed onto the filter plate 14 through the water spraying nozzles on the second water distribution plate 15 to realize backwashing of the filter plate 14, thereby avoiding residual sludge on the filter plate 14 and preventing it from being blocked, and further facilitating the efficient dehydration treatment of the sludge.

[0032] At the same time, in this embodiment, as Figures 1-3As shown, a flushing component for flushing the inside of the dehydration cylinder 1 is also provided on the dehydration cylinder 1. The flushing component includes a first water distribution plate 12 fixed on the inner wall of the dehydration cylinder 1 and a main water supply pipe 9 connected to the other end of the three-way valve. One end of the main water supply pipe 9 extends into the dehydration cylinder 1 and is communicated with the first water distribution plate 12. A water outlet pipe for spraying water towards the conveying member is installed on one side of the first water distribution plate 12.

[0033] After the sludge dehydration is completed, the discharge cover 4 can be opened first, and then the water in the water collection tank 5 is pumped out by the water pump 17, and the water is sent into the first water distribution plate 12 through the three-way valve and the main water supply pipe 9, so that the first water distribution plate 12 sprays the water towards the auger 11 through the water outlet pipe. Under the rotation of the auger 11, the inside of the auger 11 and the dehydration cylinder 1 can be cleaned. The wastewater generated during cleaning can be discharged through the sludge outlet on the dehydration cylinder 1, and part of the water overflows into the water collection cover 3 after being filtered by the filter plate 14, and then is discharged into the water collection tank 5 through the drain pipe 6 and discharged through the drain valve 10 on one side of the water collection tank 5, so as to realize the cleaning of the inside of the dehydration cylinder 1, avoid the sludge remaining on the inner wall of the dehydration cylinder 1 from scaling, and is beneficial to the subsequent dehydration processing of the sludge.

[0034] In addition, in one embodiment, as Figures 1-4 and Figure 6 and Figure 7 shown, a filtering component 7 is also provided on the water collection tank 5. The filtering component 7 includes a filter frame 71 and a filter net 72 installed in the middle of the filter frame 71. One side of the water collection tank 5 has a notch for inserting and pulling out the filter frame 71, and inserting strips 18 are installed on both sides of the inner wall of the water collection tank 5. A cover plate 73 for sealing the notch is installed at one end of the filter frame 71, and inserting slots 74 for inserting the inserting strips 18 are opened on both sides of the filter frame 71.

[0035] When the water in the water collection cover 3 is discharged into the water collection tank 5 through the drain pipe 6, the water first passes through the filter net 72 in the filter frame 71 for filtering. After filtering, the water accumulates inside the water collection tank 5, so as to realize the secondary filtering of the water, thereby further facilitating the recycling of the water.

[0036] And when the filter net 72 needs to be cleaned, the filter frame 71 can be pulled through the cover plate 73, so that the inserting strip 18 is removed from the inserting slot 74, and the filter frame 71 is pulled out of the water collection tank 5. Then the filter net 72 is cleaned. After cleaning, the filter frame 71 can be inserted into the water collection tank 5 through the inserting strip 18 and the inserting slot 74, so as to complete the installation of the filter net 72 and facilitate the filtering of the water by the filter net 72.

[0037] Furthermore, in order to realize the rapid positioning between the filter frame 71 and the water collection tank 5 and facilitate the installation of the filter frame 71, as Figure 4 and Figure 6As shown in the figure, a positioning block 19 is further installed on the inner wall of the water collecting tank 5, and a positioning groove 75 matching with the positioning block 19 is formed on one side of the filter rack 71.

[0038] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sludge dewatering device, comprising a dewatering cylinder (1), characterized in that: A feeding hopper (2) is provided at the top of the dehydration cylinder (1), and a water collecting hood (3) is connected to one side of the dehydration cylinder (1). A conveying member for conveying sludge is provided on the dehydration cylinder (1), and a closable discharge cover (4) is hinged to the bottom of the dehydration cylinder (1). A drain pipe (6) is connected to the bottom of the water collecting hood (3), and the bottom end of the drain pipe (6) is connected to a water collecting tank (5). A filtering member is provided inside the dehydration cylinder (1), and a drain valve (10) is connected to one side of the water collecting tank (5); It further includes a water spraying assembly for backwashing the filtering member. The water spraying assembly includes a second water distribution plate (15) fixed to the inner wall of the water collecting hood (3) and a water pump (17) provided inside the water collecting tank (5). A uniformly distributed water spraying nozzle is installed on one side of the second water distribution plate (15), and the water outlet end of the water spraying nozzle faces the filtering member. The water outlet end of the water pump (17) is connected to a water outlet pipe, and one end of the water outlet pipe extends to the outside of the water collecting tank (5) and is provided with a three-way valve. One end of the three-way valve is connected to a water supply branch pipe (8), and one end of the water supply branch pipe (8) extends into the water collecting hood (3) and is communicated with the second water distribution plate (15).

2. The sludge dewatering equipment according to claim 1, characterized in that: A flushing component for flushing the inside of the dehydration cylinder (1) is further provided on the dehydration cylinder (1). The flushing component includes a first water distribution plate (12) fixed to the inner wall of the dehydration cylinder (1) and a water supply main pipe (9) connected to the other end of the three-way valve. One end of the water supply main pipe (9) extends into the dehydration cylinder (1) and is communicated with the first water distribution plate (12), and a water outlet pipe for spraying water towards the conveying member is installed on one side of the first water distribution plate (12).

3. The sludge dewatering equipment according to claim 2, characterized in that: The filtering member includes a fixing plate (13). Water passing holes are formed in the fixing plate (13), and a filter plate (14) is installed in the water passing holes.

4. A sludge dewatering device according to claim 3, characterized in that: The conveying member includes an auger (11) rotatably installed inside the dehydration cylinder (1) and a motor (16) fixed to one side of the dehydration cylinder (1). The motor (16) is used to drive the auger (11) to rotate, and the auger (11) is located between the first water distribution plate (12) and the fixing plate (13).

5. A sludge dewatering device according to claim 1, characterized in that: A filtering component (7) is further provided on the water collecting tank (5). The filtering component (7) includes a filtering frame (71) and a filter net (72) installed in the middle of the filtering frame (71). One side of the water collecting tank (5) has a notch for inserting and removing the filtering frame (71), and inserting strips (18) are installed on both sides of the inner wall of the water collecting tank (5). A cover plate (73) for sealing the notch is installed at one end of the filtering frame (71), and inserting grooves (74) for inserting the inserting strips (18) are formed on both sides of the filtering frame (71).

6. The sludge dewatering equipment according to claim 5, characterized in that: A positioning block (19) is further installed on the inner wall of the water collecting tank (5), and a positioning groove (75) matching the positioning block (19) is formed on one side of the filtering frame (71).

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