Screw conveyor for sludge

Abstract

The utility model relates to sludge treatment equipment technical field discloses sludge spiral conveying device, and this sludge spiral conveying device includes casing, drive mechanism and plasma box, the lateral wall of casing is equipped with the first cooling cavity for accommodating coolant, the cross section shape of first cooling cavity is U-shaped structure, guarantees the dry sludge in the full cooling of cooling liquid in first cooling cavity to the casing, and the cooling effect is good, under the action of rotary drive source, drive rotating shaft rotates relative casing, and the dry sludge of accommodating cavity is pushed from one end of casing to the other end by spiral blade, while conveying dry sludge, the coolant of first cooling cavity and second cooling cavity carries out cooling to the dry sludge of accommodating cavity simultaneously, prevents the dry sludge from the high temperature of high temperature long -time accumulation of dry sludge and does not radiate and causes spontaneous combustion, and the stench of dry sludge emission is arranged to plasma box through exhaust port, and plasma box carries out deodorization to it, improves the comfort of on -the -spot working environment.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge treatment equipment, and in particular to a sludge screw conveyor device. Background Technology

[0002] Sludge harmless treatment includes processes such as sludge concentration, dewatering, and heating to remove some harmful substances. Wet sludge is dewatered and dried into dry sludge through drying equipment, and finally further processed through conveying pipelines to make the sludge meet the requirements for treatment or discharge.

[0003] Because sludge with low moisture content retains a certain temperature after being processed by drying equipment, and because the sludge has a high phosphorus content and contains some organic matter, the dried sludge has a certain calorific value. If the dried sludge is piled up for a long time and cannot dissipate heat effectively, it will spontaneously combust.

[0004] Therefore, there is an urgent need for a sludge screw conveyor to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a sludge screw conveyor to realize the conveying of dry sludge, ensure that the dry sludge inside the shell is fully cooled and deodorized, and improve the comfort of the on-site working environment.

[0006] To address the aforementioned problems in the existing technology, this utility model adopts the following technical solution:

[0007] The sludge screw conveyor includes:

[0008] The shell has a receiving cavity for containing sludge, and a first cooling cavity for containing coolant is provided on the side wall of the shell. The first cooling cavity has a U-shaped cross-section.

[0009] The drive mechanism includes a rotary drive source, a helical blade, and a rotating shaft. The rotating shaft is rotatably disposed within the receiving cavity. The output end of the rotary drive source is connected to the rotating shaft. The helical blade is disposed on the rotating shaft and used to transport sludge within the receiving cavity. The rotating shaft has a second cooling cavity for receiving coolant.

[0010] The plasma chamber has an exhaust port on its shell. The plasma chamber is located at the exhaust port and is used for sludge deodorization.

[0011] Preferably, the housing is provided with a water inlet and a water outlet, and along the axial direction of the rotating shaft, the water inlet and the water outlet are respectively located at both ends of the housing, and both the water inlet and the water outlet are connected to the first cooling cavity.

[0012] Preferably, the sludge screw conveyor further includes a circulating cooling mechanism, which includes a cooling tower, a cold water pipe, and a hot water pipe. The two ends of the rotating shaft are respectively provided with an inlet and an outlet. One end of the cold water pipe is connected to the cooling tower, and the other end of the cold water pipe is connected to the inlet and the inlet. One end of the hot water pipe is connected to the cooling tower, and the other end of the hot water pipe is connected to the outlet and the outlet.

[0013] Preferably, the circulating cooling mechanism further includes a first rotary joint, which is rotatably disposed at the water inlet end and is connected to the cold water pipe.

[0014] Preferably, the circulating cooling mechanism further includes a second rotary joint, which is rotatably disposed at the water outlet end and is connected to the hot water pipe.

[0015] Preferably, the housing also has an inlet and an outlet, with the inlet located at the top of the housing and the outlet located at the bottom of the housing.

[0016] Preferably, the sludge screw conveyor further includes a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate being respectively arranged around the two ends of the rotating shaft, and the inlet and the outlet being located between the first baffle plate and the second baffle plate along the axial direction of the rotating shaft.

[0017] Preferably, the first cooling cavity surrounds the receiving cavity along the outer periphery of the housing, and the first cooling cavity extends along the axial direction of the rotation axis. The beneficial effects of this invention are:

[0018] The sludge screw conveyor provided by this utility model has a housing with a cavity for holding sludge. A first cooling cavity for holding coolant is formed on the side wall of the housing. The first cooling cavity has a U-shaped cross-section, ensuring that the coolant fully cools the dry sludge inside the housing within the first cooling cavity, resulting in good cooling effect. The drive mechanism includes a rotary drive source, helical blades, and a rotating shaft. The rotating shaft is rotatably mounted inside the cavity. The output end of the rotary drive source is connected to the rotating shaft. The helical blades are mounted on the rotating shaft. A second cooling cavity for holding coolant is formed on the rotating shaft. The housing also has an exhaust port, and a plasma box is located at the exhaust port for sludge deodorization. Under the action of the rotary drive source, the rotating shaft rotates relative to the housing, and the helical blades push the dry sludge in the cavity from one end of the housing to the other. While conveying the dry sludge, the coolant in the first and second cooling cavities simultaneously cools the dry sludge in the cavity, preventing the dry sludge from accumulating at a high temperature for a long time without heat dissipation and causing spontaneous combustion. The odor emitted by the dried sludge is discharged to the plasma box through the exhaust port. The plasma box deodorizes the sludge to prevent the odor from spreading and polluting the environment, so as to avoid causing physical discomfort to the surrounding workers and improve the comfort of the on-site working environment. Attached Figure Description

[0019] Figure 1 A cross-sectional view of the sludge screw conveyor device provided in an embodiment of this utility model;

[0020] Figure 2 A cross-sectional view of the housing and drive mechanism provided in an embodiment of this utility model.

[0021] Figure label:

[0022] 1. Shell; 11. Receiving cavity; 12. First cooling cavity; 13. Water inlet; 14. Water outlet; 15. Exhaust port; 16. Feed inlet; 17. Discharge port;

[0023] 2. Drive mechanism; 21. Rotary drive source; 22. Helical blade; 23. Rotating shaft; 231. Second cooling chamber; 232. Water inlet; 233. Water outlet;

[0024] 3. Circulating cooling mechanism; 31. Cooling tower; 32. Cold water pipe; 33. Hot water pipe; 34. First rotary joint; 35. Second rotary joint;

[0025] 4. Plasma chamber;

[0026] 5. First mudguard;

[0027] 6. Second mudguard. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] 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.

[0032] like Figures 1-2As shown, in this embodiment, the sludge screw conveyor includes a housing 1, a drive mechanism 2, and a plasma chamber 4. The housing 1 has a receiving cavity 11 for containing sludge, and a first cooling cavity 12 for containing coolant is formed in the side wall of the housing 1. The first cooling cavity 12 has a U-shaped cross-section. The drive mechanism 2 includes a rotary drive source 21, helical blades 22, and a rotating shaft 23. The rotating shaft 23 is rotatably disposed within the receiving cavity 11. The output end of the rotary drive source 21 is connected to the rotating shaft 23. The helical blades 22 are disposed on the rotating shaft 23 and used to convey the sludge within the receiving cavity 11. The rotating shaft 23 has a second cooling cavity 231 for containing coolant. The housing 1 also has an exhaust port 15, and the plasma chamber 4 is disposed at the exhaust port 15 and used for sludge deodorization.

[0033] The receiving cavity 11 inside the shell 1 is used to hold the dried sludge. Along the outer periphery of the shell 1, the side wall of the shell 1 is configured as a sandwich structure, which is the first cooling cavity 12, in which coolant flows. The cross-sectional shape of the first cooling cavity 12 on the side wall of the shell 1 is U-shaped, i.e., a U-shaped sandwich structure, which ensures that the coolant can fully cool the dried sludge in the shell 1 within the first cooling cavity 12, resulting in good cooling effect.

[0034] The rotary drive source 21 is a motor. The two ends of the rotating shaft 23 are rotatably connected to the two ends of the housing 1 through bearings. The rotating shaft 23 passes through the receiving cavity 11 of the housing 1. The rotating shaft 23 is a hollow structure, which is the second cooling cavity 231. The coolant flows in the second cooling cavity 231. The coolant in the first cooling cavity 12 and the second cooling cavity 231 respectively cools the dry sludge in the receiving cavity 11 in two directions. The two-way cooling refers to the two directions of cooling the dry sludge from the outside to the inside by the coolant in the first cooling cavity 12 and cooling the dry sludge from the inside to the outside by the coolant in the second cooling cavity 231.

[0035] The spiral blade 22 has a spiral structure and extends around the outer peripheral wall of the rotating shaft 23 along the axial direction of the rotating shaft 23. The rotation drive source 21 is used to drive the rotating shaft 23 to rotate. The spiral blade 22 pushes the dry sludge in the receiving cavity 11 from one end of the shell 1 to the other end, thereby realizing the conveying of the dry sludge.

[0036] Plasma box 4 is set as a low-temperature plasma purifier, which is an air purification device that uses low-temperature plasma technology to treat waste gas. It generates active particles by ionizing gas to decompose pollutants, thereby achieving a purification effect.

[0037] The working principle of this sludge screw conveyor is as follows: The drying equipment pours the dried sludge into the receiving cavity 11 of the shell 1. The rotary drive source 21 is started, and under the action of the rotary drive source 21, the rotating shaft 23 rotates relative to the shell 1. The spiral blades 22 push the dried sludge in the receiving cavity 11 from one end of the shell 1 to the other end. While conveying the dried sludge, the coolant in the first cooling cavity 12 and the second cooling cavity 231 simultaneously cools and lowers the temperature of the dried sludge in the receiving cavity 11, preventing the dried sludge from accumulating at a high temperature for a long time without heat dissipation and causing spontaneous combustion. The odor emitted by the dried sludge is discharged to the plasma box 4 through the exhaust port 15. The plasma box 4 deodorizes the sludge, preventing the odor from spreading and polluting the environment, avoiding discomfort to the surrounding workers, and improving the comfort of the on-site working environment.

[0038] Furthermore, referring to Figure 1 The sludge screw conveyor also includes a circulating cooling mechanism 3, which includes a cooling tower 31, a cold water pipe 32, and a hot water pipe 33. The shell 1 is provided with an inlet 13 and an outlet 14. The two ends of the rotating shaft 23 are respectively provided with an inlet end 232 and an outlet end 233. One end of the cold water pipe 32 is connected to the cooling tower 31, and the other end of the cold water pipe 32 is connected to the inlet end 232 and the inlet 13. One end of the hot water pipe 33 is connected to the cooling tower 31, and the other end of the hot water pipe 33 is connected to the outlet end 233 and the outlet 14.

[0039] Along the axial direction of the rotating shaft 23, the inlet 13 and outlet 14 are located at opposite ends of the housing 1, and both inlet 13 and outlet 14 are connected to the first cooling chamber 12. The cold water pipe 32 is configured with a one-inlet, two-outlet structure, meaning one inlet end of the cold water pipe 32 is connected to the cooling tower 31, and the two outlet ends are connected to the inlet end 232 of the rotating shaft 23 and the inlet 13 of the housing 1, respectively. The cooling tower 31 supplies coolant of a lower temperature to the housing 1 and the rotating shaft 23 through the cold water pipe 32. The hot water pipe 33 is configured with a two-inlet, one-outlet structure, meaning the two inlet ends of the hot water pipe 33 are connected to the outlet end 233 of the rotating shaft 23 and the outlet 14 of the housing 1, respectively. One outlet end of the hot water pipe 33 is connected to the cooling tower 31. The housing 1 and the rotating shaft 23 supply coolant of a higher temperature to the cooling tower 31 through the hot water pipe 33. The cooling tower 31 cools and de-cools the used coolant, allowing it to be recycled.

[0040] Furthermore, referring to Figure 1 The circulating cooling mechanism 3 also includes a first rotary joint 34 and a second rotary joint 35. The first rotary joint 34 is rotatably disposed at the water inlet end 232 and is connected to the cold water pipe 32. The second rotary joint 35 is rotatably disposed at the water outlet end 233 and is connected to the hot water pipe 33.

[0041] A first rotary joint 34 and a second rotary joint 35 are respectively installed at the water inlet 232 and water outlet 233 of the rotating shaft 23. The two ends of the first rotary joint 34 and the second rotary joint 35 can rotate relative to each other. The first end interface of the first rotary joint 34 is fixedly connected to and communicates with the cold water pipe 32, and the second end interface of the first rotary joint 34 is connected to and communicates with the water inlet 232 of the rotating shaft 23. The first end interface of the second rotary joint 35 is fixedly connected to and communicates with the hot water pipe 33, and the second end interface of the second rotary joint 35 is connected to and communicates with the water outlet 233 of the rotating shaft 23. During the rotation of the rotating shaft 23 relative to the housing 1, the second end interface of the first rotary joint 34 can rotate relative to its own first end interface, and the second end interface of the second rotary joint 35 can rotate relative to its own first end interface, preventing the cold water pipe 32 and the hot water pipe 33 from becoming tangled and knotted, thus affecting the circulation and cooling of the coolant.

[0042] Furthermore, referring to Figure 1 The housing 1 is also provided with a feed inlet 16 and a discharge outlet 17. The feed inlet 16 is located at the top of the housing 1, and the discharge outlet 17 is located at the bottom of the housing 1.

[0043] The drying equipment pours the dried sludge into the receiving cavity 11 of the shell 1 through the feed port 16. Under the driving action of the drive mechanism 2, the dried sludge is transported from one end of the shell 1 to the other end. After being deodorized by the plasma box 4 and cooled by the coolant in the first cooling cavity 12 and the second cooling cavity 231, the dried sludge is discharged through the discharge port 17.

[0044] Furthermore, referring to Figure 1 The sludge screw conveyor also includes a first baffle plate 5 and a second baffle plate 6. The first baffle plate 5 and the second baffle plate 6 are respectively arranged around the two ends of the rotating shaft 23. Along the axial direction of the rotating shaft 23, the feed inlet 16 and the discharge outlet 17 are located between the first baffle plate 5 and the second baffle plate 6.

[0045] Using the two ends of the housing 1, the feed axis of the inlet 16, and the discharge axis of the outlet 17 as reference points, along the axis of the rotating shaft 23, the first baffle 5 is located between one end of the housing 1 and the discharge axis of the outlet 17. The first baffle 5 serves to block dry sludge, preventing it from overflowing the outlet 17 and accumulating inside the housing 1. The second baffle 6 is located between the other end of the housing 1 and the feed axis of the inlet 16. The second baffle 6 also serves to block dry sludge, preventing it from accumulating at the end of the housing 1 during the feeding process through the inlet 16.

[0046] Furthermore, referring to Figure 2Along the outer periphery of the housing 1, the first cooling chamber 12 surrounds the receiving cavity 11, and the first cooling chamber 12 extends along the axial direction of the rotating shaft 23.

[0047] The entire shell 1 is provided with first cooling chambers 12 on both sides and bottom, and the first cooling chambers 12 are provided through one end of the shell 1 to the other end, so as to ensure that the coolant can fully cool and reduce the temperature of the dry sludge in the shell 1 in the first cooling chambers 12, and the cooling effect is good.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sludge screw conveyor, characterized in that, include: The shell (1) has a receiving cavity (11) for containing sludge, and a first cooling cavity (12) for containing coolant is provided on the side wall of the shell (1). The cross-sectional shape of the first cooling cavity (12) is U-shaped. The drive mechanism (2) includes a rotary drive source (21), a helical blade (22) and a rotating shaft (23). The rotating shaft (23) is rotatably disposed in the receiving cavity (11). The output end of the rotary drive source (21) is connected to the rotating shaft (23). The helical blade (22) is disposed on the rotating shaft (23) and is used to transport sludge in the receiving cavity (11). The rotating shaft (23) has a second cooling cavity (231) for receiving coolant. The plasma box (4) is provided with an exhaust port (15) on the shell (1). The plasma box (4) is located at the exhaust port (15) and is used for sludge deodorization.

2. The sludge screw conveyor according to claim 1, characterized in that, The housing (1) is provided with a water inlet (13) and a water outlet (14). Along the axial direction of the rotating shaft (23), the water inlet (13) and the water outlet (14) are located at both ends of the housing (1), and the water inlet (13) and the water outlet (14) are both connected to the first cooling chamber (12).

3. The sludge screw conveyor according to claim 2, characterized in that, The sludge screw conveyor also includes a circulating cooling mechanism (3), which includes a cooling tower (31), a cold water pipe (32), and a hot water pipe (33). The two ends of the rotating shaft (23) are respectively provided with an inlet end (232) and an outlet end (233). One end of the cold water pipe (32) is connected to the cooling tower (31), and the other end of the cold water pipe (32) is connected to the inlet end (232) and the inlet (13). One end of the hot water pipe (33) is connected to the cooling tower (31), and the other end of the hot water pipe (33) is connected to the outlet end (233) and the outlet (14).

4. The sludge screw conveyor according to claim 3, characterized in that, The circulating cooling mechanism (3) further includes a first rotary joint (34), which is rotatably disposed at the water inlet (232) and is connected to the cold water pipe (32).

5. The sludge screw conveyor according to claim 3, characterized in that, The circulating cooling mechanism (3) further includes a second rotary joint (35), which is rotatably disposed at the water outlet (233) and is connected to the hot water pipe (33).

6. The sludge screw conveyor according to claim 1, characterized in that, The housing (1) is also provided with a feed inlet (16) and a discharge outlet (17). The feed inlet (16) is located at the top of the housing (1), and the discharge outlet (17) is located at the bottom of the housing (1).

7. The sludge screw conveyor according to claim 6, characterized in that, The sludge screw conveyor also includes a first baffle plate (5) and a second baffle plate (6). The first baffle plate (5) and the second baffle plate (6) are respectively arranged around the two ends of the rotating shaft (23). Along the axial direction of the rotating shaft (23), the feed inlet (16) and the discharge outlet (17) are located between the first baffle plate (5) and the second baffle plate (6).

8. The sludge screw conveyor according to claim 1, characterized in that, Along the outer periphery of the housing (1), the first cooling cavity (12) surrounds the receiving cavity (11), and the first cooling cavity (12) extends along the axial direction of the rotating shaft (23).

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