Dehydrated sludge composting device

Abstract

The utility model provides a dewatered sludge composting device, which belongs to the technical field of sludge composting and comprises a first mixing box composed of a first base and a first box shell, a first stirring device is arranged in the first box shell, and a second mixing box composed of a second base and a second box shell arranged at the top of the second base. A corrugated pipe is arranged between the first mixing box and the second mixing box, and a second stirring device is arranged in the second box shell in the length direction; the spraying assembly comprises a supporting structure, the supporting structure is arranged in the second box shell, a spraying pipe is arranged at the top of the supporting structure, a plurality of nozzles are arranged on one side of the spraying pipe, and a ball valve is arranged on the side, close to the second box shell, of the spraying pipe. The problems that in the prior art, the activity of microorganisms is affected due to the fact that the water content of dewatered sludge is insufficient, and meanwhile the composting quality and efficiency are affected due to the fact that stirring is insufficient when auxiliary materials and beneficial bacteria are manually mixed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge composting, and particularly relates to a dehydrated sludge composting device. Background Art

[0002] With the acceleration of the urbanization process and the popularization of sewage treatment technology, the output of sludge increases year by year. How to efficiently and environmentally treat and dispose of sludge has become an important issue in the current environmental protection field. The aerobic composting treatment of sludge, as an economically feasible and environmentally friendly treatment and disposal method, has attracted much attention due to its multiple advantages. Through the growth and metabolic activities of microorganisms, the aerobic composting treatment of sludge degrades or transforms organic pollutants, realizes the reduction and harmlessness of sludge, and at the same time efficiently kills pathogenic bacteria, deodorizes and completely stabilizes, which makes the aerobic composting treatment of sludge an important way for sludge to be used in agriculture.

[0003] In the prior art, when composting dehydrated sludge, the activity of microorganisms is often affected due to insufficient water content of the sludge. At the same time, when adding auxiliary materials and beneficial bacteria manually, the stirring is not sufficient enough, resulting in uneven fermentation of the mud material during the composting process, and further affecting the quality and efficiency of composting. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a dehydrated sludge composting device for solving the above problems.

[0005] The utility model is realized as follows:

[0006] A dehydrated sludge composting device includes:

[0007] A first mixing tank, including a first base, a first box body shell is arranged on the top of the first base, a first stirring device is arranged inside the first box body shell, and a discharge port a and a feeding port a are respectively arranged on the left and right sides of the first mixing tank;

[0008] A second mixing tank, including a second base, a second box body shell is arranged on the top of the second base, a feeding port b is arranged on the right side of the second box body shell, a corrugated pipe is arranged between the discharge port a and the feeding port b, a second stirring device is arranged along the length direction inside the second box body shell, and a discharge port b is arranged on the left side of the second box body shell;

[0009] A spraying assembly, including a support structure, the support structure is arranged inside the second box body shell, a spraying pipe is arranged on the top of the support structure, a plurality of nozzles are arranged on one side of the spraying pipe, the right side of the spraying pipe penetrates through the second box body shell and is communicated with an external water tank, and a ball valve is arranged on the side of the spraying pipe close to the second box body shell.

[0010] In an embodiment of the present utility model, the first stirring device includes a motor fixing plate, the motor fixing plate is arranged on the top of the first box body shell, a stirrer is rotatably arranged between the motor fixing plate and the first base, a first driving motor is arranged on the top of the motor fixing plate, and an output shaft of the first driving motor penetrates through the motor fixing plate and is connected with the stirrer.

[0011] In an embodiment of the present utility model, the included angle between the surface of the second base and the ground is 10 - 30 degrees.

[0012] In an embodiment of the present utility model, the second stirring device includes a bearing seat and a motor bracket, the bearing seat is arranged on the left side of the second box body shell, the motor bracket is arranged on the right side of the second box body shell, a spiral shaft is rotatably arranged between the bearing seat and the motor bracket, a second driving motor is arranged on the right side of the motor bracket, and an output shaft of the second driving motor is connected with the spiral shaft.

[0013] In an embodiment of the present utility model, a back pressure plate is arranged inside the motor bracket, and the spiral shaft penetrates through the back pressure plate and is fixedly connected therewith.

[0014] In an embodiment of the present utility model, a sludge discharge hopper is arranged on the bottom side close to the discharge port b on the right side of the second box body shell.

[0015] In an embodiment of the present utility model, the support structure includes a support plate, the support plate is fixedly arranged on the bottom wall of the second box body shell, a fixing rod is arranged between the side wall of the adjacent side of the support plate and the second box body shell, and a water pipe bracket is arranged on the top of the support plate.

[0016] In an embodiment of the present utility model, there are two spray pipes, which are combined into a parallel spray pipe through elbows, and the ball valve is arranged at the confluence of the parallel spray pipes.

[0017] The beneficial effects of the present utility model are as follows: By designing the first mixing box and the second mixing box, the sludge is stirred and mixed twice, ensuring the uniformity and sufficiency of the mixing, avoiding the problem of uneven mixing caused by insufficient manual stirring, and improving the quality and efficiency of composting; During the mixing process, the spraying component evenly sprays water on the mixed sludge through the nozzles, increasing the humidity of the sludge, which helps to provide a suitable growth environment for microorganisms, promotes the growth and activities of microorganisms, and thus accelerates the decomposition and stabilization process of the sludge; The design of the control box combined with the driving motor makes the operation simpler and faster, improves the automation degree of the device, not only reduces the operation difficulty, but also improves the work efficiency. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic structural diagram of the overall structure provided by the embodiment of the present utility model;

[0020] Figure 2 A schematic structural diagram of the first stirring device provided by the embodiment of the present utility model;

[0021] Figure 3 A schematic structural diagram of the second stirring device provided by the embodiment of the present utility model;

[0022] Figure 4 A partial structural diagram of the second stirring device provided by the embodiment of the present utility model;

[0023] Figure 5 A schematic structural diagram of the spraying component provided by the embodiment of the present utility model.

[0024] In the figure: 10, the first mixing tank; 11, the first box body shell; 12, the first base; 13, the first stirring device; 1301, the motor fixing plate; 1302, the first driving motor; 1303, the stirrer; 14, the feeding port a; 15, the discharging port a; 20, the corrugated pipe; 30, the second mixing tank; 31, the second box body shell; 32, the feeding port b; 33, the discharging port b; 34, the second base; 35, the second stirring device; 3501, the spiral shaft; 3502, the bearing seat; 3503, the second driving motor; 3504, the back pressure plate; 3505, the motor bracket; 36, the mud discharging hopper; 40, the spraying component; 41, the support structure; 4101, the support plate; 4102, the fixing rod; 4103, the water pipe bracket; 42, the spraying pipe; 43, the nozzle; 44, the ball valve. Detailed implementation manners

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0027] As Figure 1-2 shown, the present invention provides a dehydrated sludge composting device, including a first mixing tank 10, which is composed of a first base 12 and a first box body shell 11 arranged on top of it. A first stirring device 13 is arranged inside the first box body shell 11. Feeding ports a14 and discharging ports a15 are respectively arranged on the left and right sides of the first mixing tank 10. Dry sludge, related auxiliary materials, and microorganisms beneficial to fermentation are conveyed to the feeding port through a conveyor belt, and are preliminarily stirred and mixed by the first stirring device 13 to ensure more uniform mixing in the subsequent mixing process.

[0028] In this embodiment, the auxiliary materials used are wood chips and straw fragments, which are used to provide appropriate carbon sources and adjust the moisture and air permeability in the sludge. At the same time, beneficial microorganisms are added to accelerate the growth and activity of internal microorganisms and promote the decomposition and stabilization of the sludge.

[0029] In this embodiment, a control box is arranged outside the first mixing tank 10. The control box is electrically connected to a first driving motor 1302 and a second driving motor 3503 respectively. The operation of the first mixing tank 10 and the second mixing tank 30 can be controlled through the control panel on the control box.

[0030] As Figure 2 shown, the first stirring device 13 includes a motor fixing plate 1301, which is arranged on the top of the first box body shell 11. A stirrer 1303 is rotatably arranged between the motor fixing plate 1301 and the first base 12. A first driving motor 1302 is arranged on the top of the motor fixing plate 1301, and the output shaft of the first driving motor 1302 passes through the motor fixing plate 1301 and is connected to the stirrer 1303.

[0031] In this embodiment, the second mixing tank 30 includes a second base 34, a second box body shell 31 is arranged on the top of the second base 34. A feeding port b32 is arranged on the right side of the second box body shell 31. A corrugated pipe 20 is arranged between the discharging port a15 and the feeding port b32. A second stirring device 35 is arranged along the length direction inside the second box body shell 31. A discharging port b33 is arranged on the left side of the second box body shell 31.

[0032] As Figure 3As shown, the second stirring device 35 includes a bearing housing 3502 and a motor support 3505. The bearing housing 3502 is arranged on the left side of the second housing 31, and the motor support 3505 is arranged on the right side of the second housing 31. A spiral shaft 3501 is rotatably arranged between the bearing housing 3502 and the motor support 3505. A second driving motor 3503 is arranged on the right side of the motor support 3505, and the output shaft of the second driving motor 3503 is connected to the spiral shaft 3501. There are two groups of the second stirring devices 35, which are arranged side by side inside the second housing 31. When the spiral shaft 3501 rotates, the blades on its surface stir the mud material and push it from the right side to the discharge port b33 on the left side.

[0033] As Figure 4 shown, a back pressure plate 3504 is arranged inside the motor support 3505, and the spiral shaft 3501 passes through the back pressure plate 3504 and is fixedly connected thereto. To prevent the mud material pushed over from directly impacting the second driving motor 3503 and causing pollution and corrosion at the output shaft of the second driving motor 3503, which affects the service life of the equipment, the back pressure plate 3504 provides a buffering effect on the mud material at the discharge port. A mud discharge hopper 36 is arranged at the bottom on the right side of the second housing 31 near the discharge port b33. The buffered mud material flows out smoothly from the mud discharge hopper 36 and is finally transported to the warehouse for stacking and fermentation.

[0034] As a preferred embodiment, the angle between the surface of the second base 34 and the ground is 10 - 30 degrees. By the inclination angle, the time for the mud material to move from the right side to the left side is slowed down, so that its mixing is more sufficient.

[0035] As Figure 5 shown, the spraying assembly 40 includes a support structure 41. The support structure 41 is arranged inside the second housing 31. A spraying pipe 42 is arranged at the top of the support structure 41. A plurality of nozzles 43 are arranged on one side of the spraying pipe 42. The right side of the spraying pipe 42 passes through the second housing 31 and is communicated with an external water tank. A ball valve 44 is arranged on the side of the spraying pipe 42 close to the second housing 31.

[0036] Among them, the support structure 41 includes a support plate 4101. The support plate 4101 is fixedly arranged on the bottom wall of the second housing 31. A fixing rod 4102 is arranged between the side wall of the support plate 4101 adjacent to the second housing 31. A through hole facilitating the movement of the spiral shaft 3501 is arranged on the support plate 4101. A water pipe support 4103 is arranged at the top of the support plate 4101. The function of the support plate 4101 is not only to support the spraying pipe 42, but also to further block the running speed of the mud material inside the second housing 31, increase the mixing time of the mud material, and ensure its sufficient mixing.

[0037] In this embodiment, there are two spray pipes 42, which are combined into a parallel spray pipe 42 through elbows. The ball valve 44 is arranged at the confluence of the parallel spray pipe 42 to control the opening of the spray pipe 42. There are also certain requirements for the humidity during the composting process. If the treated sludge is too dry, it is not conducive to the growth and activities of microorganisms. Therefore, the spray pipe 42 is used to increase the humidity during the mixing process, which helps the compost fermentation.

[0038] In a preferred embodiment, the ball valve 44 can be replaced by an electric ball valve 44, and the electric ball valve 44 is electrically connected to the control box, so that the operation of the spray assembly 40 can be controlled more conveniently.

[0039] Specifically, the working principle of the dewatered sludge composting device is as follows: The conveyor belt conveys the mixture of the treated sludge, auxiliary materials and beneficial microorganisms to the feeding port a14. The first stirring device 13 performs preliminary stirring on it to prevent the auxiliary materials and beneficial microorganisms from clustering, which is not conducive to subsequent mixing. The preliminarily mixed mud material flows from the discharge port a15 to the feeding port b32, and is subjected to secondary stirring by the second stirring device 35. At the same time, the fan blades on the spiral shaft 3501 provide a leftward thrust, so that the mixed mud material flows out from the mud discharge hopper 36. At the same time, the spray assembly 40 increases the humidity of the mixed mud material. Through the above structure, the problems in the prior art that the activity of microorganisms is affected due to insufficient water content of the dewatered sludge, and the mixing of auxiliary materials and beneficial bacteria by manual is not sufficient, thus affecting the quality and efficiency of composting are solved.

[0040] The above further describes the present invention with the help of specific embodiments. However, it should be understood that this specific description should not be construed as a limitation on the essence and scope of the present invention. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present invention.

Claims

1. A dewatered sludge composting device, characterized in that: include: A first mixing box (10) comprises a first base (12), a first box shell (11) is arranged on the top of the first base (12), a first stirring device (13) is arranged inside the first box shell (11), and a discharge port a (15) and a feed port a (14) are respectively arranged on the left and right sides of the first mixing box (10); A second mixing box (30) comprises a second base (34), a second box shell (31) is arranged on the top of the second base (34), a feeding port b (32) is arranged on the right side of the second box shell (31), a bellows (20) is arranged between the discharge port a (15) and the feed port b (32), a second stirring device (35) is arranged in the length direction inside the second box shell (31), and a discharge port b (33) is arranged on the left side of the second box shell (31); A spray assembly (40) comprises a support structure (41), wherein the support structure (41) is arranged inside the second box shell (31), a spray pipe (42) is arranged on the top of the support structure (41), a plurality of nozzles (43) are arranged on one side of the spray pipe (42), the right side of the spray pipe (42) passes through the second box shell (31) and is connected to an external water tank, and a ball valve (44) is arranged on one side of the spray pipe (42) close to the second box shell (31).

2. A dewatered sludge composting device according to claim 1, characterized in that: The first stirring device (13) comprises a motor fixing plate (1301), wherein the motor fixing plate (1301) is arranged on the top of the first box shell (11), an agitator (1303) is rotatably arranged between the motor fixing plate (1301) and the first base (12), a first driving motor (1302) is arranged on the top of the motor fixing plate (1301), and an output shaft of the first driving motor (1302) passes through the motor fixing plate (1301) and is connected to the agitator (1303).

3. A dewatered sludge composting device according to claim 1, characterized in that: The angle between the surface of the second base (34) and the ground is 10-30 degrees.

4. A dewatered sludge composting device according to claim 1, characterized in that: The second stirring device (35) comprises a bearing seat (3502) and a motor bracket (3505), wherein the bearing seat (3502) is arranged on the left side of the second box shell (31), and the motor bracket (3505) is arranged on the right side of the second box shell (31), a spiral shaft (3501) is rotatably arranged between the bearing seat (3502) and the motor bracket (3505), a second driving motor (3503) is arranged on the right side of the motor bracket (3505), and the output shaft of the second driving motor (3503) is connected to the spiral shaft (3501).

5. A dewatered sludge composting device according to claim 4, characterized in that: A back pressure plate (3504) is disposed inside the motor bracket (3505), and the spiral shaft (3501) passes through the back pressure plate (3504) and is fixedly connected thereto.

6. A dewatered sludge composting device according to claim 5, characterized in that: A mud discharge hopper (36) is provided on the right side of the second box shell (31) near the bottom of the discharge port b (33).

7. A dewatered sludge composting device according to claim 6, characterized in that: The support structure (41) comprises a support plate (4101), wherein the support plate (4101) is fixedly arranged on the bottom wall of the second box shell (31), a fixing rod (4102) is arranged between the support plate (4101) and the side wall of the second box shell (31) on an adjacent side, and a water pipe bracket (4103) is arranged on the top of the support plate (4101).

8. The dewatered sludge composting device according to claim 1, characterized in that: There are two spray pipes (42), which are combined into parallel spray pipes (42) through an elbow, and the ball valve (44) is arranged at the confluence of the parallel spray pipes (42).

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