Sludge source reduction device and sludge source reduction process

Abstract

The invention discloses a sludge source reduction device, which comprises: a drying unit, which comprises a shell, hollow shafts are symmetrically and rotatably arranged on the shell, and a plurality of hollow blades are slidably connected to the hollow shafts along the axial direction; the steam guide unit comprises a plurality of rotating shafts, a plurality of cavities are symmetrically formed in the hollow shafts, hook-shaped baffles are fixedly connected to the rotating shafts, gears are fixedly connected to the rotating shafts, toothed plates are slidably inserted into the hollow shafts in a penetrating mode, and movable assemblies used for driving the toothed plates are arranged between the hollow blades and the toothed plates; a clamping assembly used for limiting the toothed plate is arranged in the cavity, and a reset assembly used for resetting the toothed plate is arranged in the cavity. Through blocking of the hook-shaped baffle, hot steam is made to flow back, a large amount of heat of the hot steam is concentrated at the feeding end, and the heat is efficiently utilized.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and in particular to a sludge source reduction device and a sludge source reduction process. Background Art

[0002] With the acceleration of urbanization and tightening environmental protection policies, the problem of sludge disposal generated during sewage treatment is becoming increasingly severe. Traditional sludge treatment processes generally suffer from shortcomings such as low volume reduction, high energy consumption, and a high risk of secondary pollution. Thermal drying technology, due to its efficient volume reduction, has become a key step in advanced sludge treatment. Paddle dryers, with their indirect conduction heating mode and compact structure, are widely used in sludge thermal drying.

[0003] However, in actual operation, the existing paddle dryer dries the sludge by continuously introducing hot steam into the hollow shaft. However, in the initial stage of drying, the sludge is concentrated at the feed end, and the hot steam does penetrate the entire hollow shaft, resulting in a large amount of heat waste. At the same time, during the drying process, the feed end, middle end, and discharge end require the most heat, and as the sludge dries, the heat required at the middle end and discharge end is not as large as that at the feed end. The existing paddle dryer uses a through-type hollow shaft to input hot steam, so that the heat of the entire hollow shaft is evenly distributed, resulting in a waste of resources. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A sludge source reduction device, comprising:

[0007] The drying unit comprises a shell, a hollow shaft is symmetrically arranged on the shell for rotation, and a plurality of hollow blades are slidably connected to the hollow shaft along its axial direction;

[0008] The steam guide unit includes multiple rotating shafts, which are rotatably inserted into the hollow shaft. Multiple cavities are symmetrically provided in the hollow shaft. The rotating shaft extends into the cavity. A hook-shaped baffle is fixedly connected to the rotating shaft. A gear is fixedly connected to the rotating shaft. A tooth plate is slidably inserted into the hollow shaft. A movable component for driving the tooth plate is provided between the hollow blade and the tooth plate. A locking component for restricting the tooth plate is provided in the cavity. A reset component for resetting the tooth plate is provided in the cavity.

[0009] As a preferred solution of the sludge source reduction device described in the present invention, a feed port for feeding is provided on the top of the shell, and a discharge port for discharging is provided on the bottom of the shell.

[0010] As a preferred solution of the sludge source reduction device described in the present invention, both ends of the hollow shaft extend outward to the outside of the shell, both ends of the hollow shaft are provided with couplings, and one end of the hollow shaft is connected to the power device.

[0011] As a preferred solution of the sludge source reduction device described in the present invention, a steam inlet pipe and a steam outlet pipe are respectively provided on the couplings at both ends of the hollow shaft, and the steam inlet pipe and the steam outlet pipe are both connected to the interior of the hollow shaft.

[0012] As a preferred solution of the sludge source reduction device described in the present invention, a jacket is fixedly connected to the outer wall of the shell, a steam transmission pipe is symmetrically fixedly connected to the jacket, and a steam return pipe is fixedly connected to the bottom of the jacket.

[0013] As a preferred solution of the sludge source reduction device described in the present invention, the movable component includes a push rod, a protrusion is fixedly connected to the push rod, an inclined surface is provided on the tooth plate, the inclined surface cooperates with the push rod, a fixed plate is fixedly connected to the tooth plate, and a first spring is fixedly connected between the fixed plate and the outer surface of the hollow shaft.

[0014] As a preferred solution of the sludge source reduction device described in the present invention, the locking assembly includes a round rod, which is rotatably connected to the inner wall of the cavity, a locking rod is fixedly connected to the round rod, a plurality of slots are provided on the tooth plate, the locking rod cooperates with the slots, a fixed block is fixedly connected to the inner wall of the cavity, and a second spring is fixedly connected between the fixed block and the locking rod.

[0015] As a preferred solution of the sludge source reduction device described in the present invention, the reset assembly includes a push rod, which is slidably inserted into the hollow shaft and one end extends into the cavity. A third spring is fixedly connected between the push rod and the inner wall of the cavity. The push rod cooperates with the fixed plate. A plurality of magnetic rings are fixedly connected to the outer wall of the hollow shaft. The magnetic rings cooperate with the hollow blades, and the hollow blades are made of magnetic material.

[0016] As a preferred solution of the sludge source reduction device described in the present invention, a cover body is fixedly connected to the hollow shaft, and the push rod is slidably inserted into the cover body.

[0017] The present invention also proposes a sludge source reduction process, comprising the following steps:

[0018] S1: Add the sludge to be dried into the shell through the feed port, connect the steam inlet pipe and steam transmission pipe with the external pipeline, and transmit hot steam into it;

[0019] S2. Start the power device to drive the hollow shaft to rotate, drying and crushing the sludge and slowly transporting it to one end of the discharge port;

[0020] S3. As the sludge is continuously transported, the moisture in the sludge is continuously evaporated and dried. When the sludge is transported to the discharge port, the drying is completed and the sludge is discharged outward through the discharge port, achieving the effect of sludge reduction.

[0021] Beneficial effects of the present invention:

[0022] 1. When in use, in the initial state, hot steam is introduced and blocked by the hook-shaped baffle, so that the hot steam refluxes, and its heat is concentrated at the feed end, so that the heat is efficiently utilized to dry the sludge and avoid heat waste.

[0023] 2. As the sludge is continuously transported to the discharge end, it fills the space between the two hollow blades at the middle end and the discharge end, squeezing the hollow blades to move toward the discharge end, driving the push rod to move to one side. The push rod squeezes the inclined surface on the tooth plate, causing the tooth plate to move toward the inside of the cavity, causing the gear to rotate, driving the rotating shaft to rotate, causing the hook-shaped baffle to rotate to both sides, so that the middle airflow can flow to one end of the hollow shaft. At the same time, the airflow on both sides refluxes to a certain extent under the action of the hook-shaped baffle, so that the heat is more concentrated at the feed end. The feed end, middle end, and discharge end form a state of decreasing heat in sequence, so that the heat can be better utilized and heat waste is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0025] Figure 1 This is a schematic diagram of the overall front structure of a sludge source reduction device proposed by the present invention;

[0026] Figure 2 for Figure 1 A partial cross-sectional top view of

[0027] Figure 3 for Figure 2 Bottom view of

[0028] Figure 4 for Figure 2Schematic diagram of the cross section of the hollow shaft;

[0029] Figure 5 for Figure 2 Schematic diagram of the local structure in;

[0030] Figure 6 for Figure 5 Schematic diagram of the local cross-section structure;

[0031] Figure 7 for Figure 6 Schematic diagram of the cross section at point A;

[0032] Figure 8 for Figure 7 The enlarged schematic diagram of point B in the middle;

[0033] Figure 9 for Figure 8 Side view of the middle rod;

[0034] Figure 10 Schematic diagram of airflow guidance in the initial stage;

[0035] Figure 11 This is a schematic diagram of the airflow direction after working for a certain period of time.

[0036] In the figure: 100, drying unit; 101, housing; 102, feed port; 103, power unit; 104, hollow shaft; 105, hollow blade; 106, steam inlet pipe; 107, steam outlet pipe; 108, discharge port; 109, jacket; 110, steam transmission pipe; 111, steam return pipe; 200, steam guide unit; 201, rotating shaft; 202, hook-shaped baffle; 203, cavity; 204, gear; 205 , tooth plate; 206, movable component; 206a, push rod; 206b, protrusion; 206c, fixed plate; 206d, first spring; 207, locking component; 207a, round rod; 207b, locking rod; 207c, locking groove; 207d, fixed block; 207e, second spring; 208, reset component; 208a, push rod; 208b, third spring; 209, cover body; 210, magnetic ring. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0040] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0041] Example 1

[0042] Reference Figure 1-3 The present invention provides a sludge source reduction device, comprising:

[0043] The drying unit 100 includes a shell 101. A feed port 102 for feeding is provided on the top of the shell 101. A discharge port 108 for discharging is provided at the bottom of the shell 101. The user can pour the sludge into the shell 101 through the feed port 102 to heat and dry it to dehydrate it, and gradually transport the dried sludge toward the discharge port 108 as the hollow blades 105 rotate, so that it can be discharged through the discharge port 108. A hollow shaft 104 is symmetrically provided on the shell 101 for rotation. A plurality of hollow blades 105 are connected to the hollow shaft 104 along its axial direction for sliding. The sliding distance is fixed. Both ends of the hollow shaft 104 extend outward to the outside of the shell 101. Both ends of the hollow shaft 104 are provided with couplings. One end of the hollow shaft 104 is connected to the power device 103, so that when the power device When 103 is started, it can drive the two hollow shafts 104 to rotate simultaneously and in opposite directions, continuously stirring and crushing the sludge in the shell 101. The couplings at both ends of the hollow shaft 104 are respectively provided with a steam inlet pipe 106 and a steam outlet pipe 107. The steam inlet pipe 106 and the steam outlet pipe 107 are both connected to the inside of the hollow shaft 104. The user can pass hot steam into the hollow shaft 104 through the steam inlet pipe 106 to dry and dehydrate the sludge, and then discharge it again through the steam outlet pipe 107. A jacket 109 is fixedly connected to the outer wall of the shell 101, and a steam pipe 110 is symmetrically fixedly connected to the jacket 109. A return steam pipe 111 is fixedly connected to the bottom of the jacket 109. Steam is transported to the jacket 109 through the steam pipe 110 to heat the side wall of the shell 101 to accelerate the drying of the sludge.

[0044] Example 2

[0045] Reference Figure 4-9 The difference between this embodiment and embodiment 1 is that:

[0046] The steam guide unit 200 includes a plurality of rotating shafts 201, which are rotatably inserted into the hollow shaft 104. The hollow shaft 104 has a plurality of cavities 203 symmetrically provided therein. The rotating shaft 201 extends into the cavity 203. A hook-shaped baffle 202 is fixedly connected to the rotating shaft 201. A gear 204 is fixedly connected to the rotating shaft 201. A tooth plate 205 is slidably inserted into the hollow shaft 104. A movable component 206 for driving the tooth plate 205 is provided between the hollow blade 105 and the tooth plate 205. The movable component 206 includes a push rod 206a. A protrusion 206b is fixedly connected to the push rod 206a. The tooth plate 205 is provided with an inclined surface, which cooperates with the push rod 206a. A fixed plate 206c is fixedly connected to the tooth plate 205. The fixed plate 206c is connected to the hollow shaft 10 4 outer surfaces are fixedly connected with a first spring 206d. When the sludge is transported to the middle, the sludge is continuously filled between the two hollow blades 105, squeezing the hollow blades 105, causing the hollow blades 105 to move to one side, driving the push rod 206a to move to one side, and squeezing the inclined surface on the tooth plate 205 by the push rod 206a, causing the tooth plate 205 to move toward the inside of the cavity 203, causing the gear 204 to rotate, driving the rotating shaft 201 to rotate, causing the hook-shaped baffle 202 to rotate to both sides. A clamping assembly 207 for limiting the tooth plate 205 is provided in the cavity 203. The clamping assembly 207 includes a round rod 207a, which is rotatably connected to the inner wall of the cavity 203. A clamping rod 207b is fixedly connected to the round rod 207a. 05 is provided with a plurality of slots 207c, and the card rod 207b cooperates with the slots 207c. A fixing block 207d is fixedly connected to the inner wall of the cavity 203, and a second spring 207e is fixedly connected between the fixing block 207d and the card rod 207b. When the tooth plate 205 moves toward the inside of the cavity 203, the card rod 207b can be directly squeezed so that one end of the card rod 207b is disengaged from one of the slots 207c. Then, when the other slot 207c moves to a suitable position, the card rod 207b enters the slot 207c under the action of the second spring 207e for engagement. A reset component 208 for resetting the tooth plate 205 is provided in the cavity 203. The reset component 208 includes a push rod 208a, which slides and is inserted into the hollow shaft 10 4 and one end extends into the cavity 203, a third spring 208b is fixedly connected between the push rod 208a and the inner wall of the cavity 203, the push rod 208a cooperates with the fixed plate 206c, and a plurality of magnetic rings 210 are fixedly connected to the outer wall of the hollow shaft 104, the magnetic ring 210 cooperates with the hollow blade 105, and the hollow blade 105 is made of magnetic material. When the sludge treatment is completed, the hollow blade 105 moves to the side away from the cavity 203 under the action of the magnetic ring 210, driving the push rod 206a to move. When the push rod 206a is reset, the protrusion 206b first lifts the tooth plate 205, so that the fixed plate 206c presses the push rod 208a, and the push rod 208a squeezes the clamping rod 207b, so that the clamping rod 207b rotates.After disengaging from the slot 207c, the toothed plate 205 quickly rebounds and resets. After the latch rod 207b loses the pressure of the push rod 208a, it resets under the action of the second spring 207e and is inserted into one of the slots 207c again. A cover 209 is fixedly connected to the hollow shaft 104, and the push rod 206a slides through the cover 209. The cover 209 protects all components therein.

[0047] Example 3

[0048] Reference Figure 10-11 201 rotates, and the hook-shaped baffle 202 rotates to both sides, so that the middle airflow can flow toward one end of the hollow shaft 104. At the same time, the airflow on both sides is refluxed to a certain extent under the action of the hook-shaped baffle 202, so that the heat is more concentrated at the feed end, and the heat is efficiently utilized. As the sludge is continuously transported to the discharge end, after filling between the two hollow blades 105 at the middle end and the discharge end, the hollow blade 105 is squeezed to move toward the discharge end, driving the push rod 206a to move to one side, and the push rod 206a squeezes the inclined surface on the tooth plate 205, so that the tooth plate 205 moves toward the inside of the cavity 203, so that the gear 204 rotates, driving the rotating shaft 201 to rotate, causing the hook-shaped baffle 202 to rotate to both sides, so that the middle airflow can flow toward one end of the hollow shaft 104. At the same time, the airflow on both sides is refluxed to a certain extent under the action of the hook-shaped baffle 202, so that the heat is more concentrated at the feed end, and the feed end, middle end, and discharge end form a state of decreasing heat in sequence.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sludge source reduction device, characterized by: include: The drying unit (100) comprises a housing (101), a hollow shaft (104) being symmetrically arranged on the housing (101), and a plurality of hollow blades (105) being slidably connected to the hollow shaft (104) along its axial direction; The steam guide unit (200) comprises a plurality of rotating shafts (201), wherein the rotating shafts (201) are rotatably inserted into a hollow shaft (104), wherein a plurality of cavities (203) are symmetrically provided in the hollow shaft (104), wherein the rotating shaft (201) extends into the cavity (203), wherein a hook-shaped baffle (202) is fixedly connected to the rotating shaft (201), wherein a gear (204) is fixedly connected to the rotating shaft (201), wherein a tooth plate (205) is slidably inserted into the hollow shaft (104), wherein a movable component (206) for driving the tooth plate (205) is provided between the hollow blade (105) and the tooth plate (205), wherein a clamping component (207) for restricting the tooth plate (205) is provided in the cavity (203), and wherein a reset component (208) for resetting the tooth plate (205) is provided in the cavity (203).

2. A sludge source reduction device according to claim 1, characterized in that: The top of the shell (101) is provided with a feeding port (102) for feeding materials, and the bottom of the shell (101) is provided with a discharging port (108) for discharging materials.

3. The sludge source reduction device according to claim 2, characterized in that: Both ends of the hollow shaft (104) extend outward to the outside of the housing (101), couplings are provided at both ends of the hollow shaft (104), and one end of the hollow shaft (104) is connected to the power device (103).

4. The sludge source reduction device according to claim 3, characterized in that: A steam inlet pipe (106) and a steam outlet pipe (107) are respectively provided on the couplings at both ends of the hollow shaft (104), and both the steam inlet pipe (106) and the steam outlet pipe (107) are communicated with the interior of the hollow shaft (104).

5. The sludge source reduction device according to claim 4, characterized in that: A jacket (109) is fixedly connected to the outer wall of the shell (101), a steam transmission pipe (110) is symmetrically fixedly connected to the jacket (109), and a steam return pipe (111) is fixedly connected to the bottom of the jacket (109).

6. The sludge source reduction device according to claim 5, characterized in that: The movable component (206) includes a push rod (206a), a protrusion (206b) is fixedly connected to the push rod (206a), an inclined surface is provided on the tooth plate (205), and the inclined surface cooperates with the push rod (206a), a fixed plate (206c) is fixedly connected to the tooth plate (205), and a first spring (206d) is fixedly connected between the fixed plate (206c) and the outer surface of the hollow shaft (104).

7. The sludge source reduction device according to claim 6, characterized in that: The engaging assembly (207) comprises a round rod (207a), the round rod (207a) being rotatably connected to the inner wall of the cavity (203), a clamping rod (207b) being fixedly connected to the round rod (207a), a plurality of clamping slots (207c) being provided on the tooth plate (205), the clamping rod (207b) being matched with the clamping slots (207c), a fixing block (207d) being fixedly connected to the inner wall of the cavity (203), and a second spring (207e) being fixedly connected between the fixing block (207d) and the clamping rod (207b).

8. The sludge source reduction device according to claim 7, characterized in that: The reset assembly (208) includes a push rod (208a), which is slidably inserted into the hollow shaft (104) and one end of which extends into the cavity (203). A third spring (208b) is fixedly connected between the push rod (208a) and the inner wall of the cavity (203). The push rod (208a) cooperates with the fixed plate (206c). A plurality of magnetic rings (210) are fixedly connected to the outer wall of the hollow shaft (104). The magnetic rings (210) cooperate with the hollow blades (105). The hollow blades (105) are made of magnetic material.

9. The sludge source reduction device according to claim 8, characterized in that: A cover body (209) is fixedly connected to the hollow shaft (104), and the push rod (206a) is slidably inserted into the cover body (209).

10. A sludge source reduction process, based on a sludge source reduction device according to any one of claims 1 to 9, characterized in that: The steps include: S1: Add the sludge to be dried into the shell (101) through the feed port (102), connect the steam inlet pipe (106) and the steam delivery pipe (110) to the external pipeline, and deliver hot steam to the interior; S2, starting the power device (103), driving the hollow shaft (104) to rotate, drying and crushing the sludge and slowly conveying it to one end of the discharge port (108); S3. As the sludge is continuously transported, the water in the sludge is continuously evaporated and dried. When the sludge is transported to the discharge port (108), the drying is completed and the sludge is discharged outward through the discharge port (108), thereby achieving the effect of reducing the amount of sludge.

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