Sludge modification device

Abstract

The invention discloses a sludge modification device, which belongs to the technical field of sludge dewatering and modification treatment and comprises a tank body, a stirring shaft and a driving device. The stirring shaft is of a double-shaft structure, a crushing element, a conveying element and a back-mixing element are arranged on the stirring shaft, the crushing element is used for crushing massive sludge, the conveying element pushes a mixture to be conveyed forwards, and the back-mixing element returns materials which are not completely mixed to the stirring area so as to prolong the mixing time. The driving device drives the stirring shaft to rotate through the power transmission mechanism, uniform mixing of the sludge, the skeleton agent and the liquid agent is achieved, and meanwhile the sludge is prevented from being accumulated or blocked in the tank body. The device is reasonable in structural design, has the integrated functions of crushing, mixing and conveying, not only enhances the fluidity and uniformity of sludge, but also remarkably improves the modification efficiency, and improves the dehydration performance and compression resistance of the sludge. The equipment is simple and convenient to operate and stable in operation, provides an efficient pretreatment means for subsequent dehydration and treatment processes, and is suitable for various sludge modification treatment scenes.

Description

Technical Field

[0001] The invention relates to the field of sludge dewatering environmental protection equipment, which is used for mixing sludge and related reagents, and in particular to a sludge modification device. Background Art

[0002] At present, with the increasing demand for sewage treatment, sludge dehydration and modification have gradually become an important part of the environmental protection field. Sludge contains a high proportion of water and organic matter, and needs to be modified by adding chemicals to improve the dehydration performance and mechanical strength of the sludge to meet the requirements of subsequent treatment. For this reason, various sludge conditioning and modification equipment are widely used.

[0003] Prior art CN222119049U discloses a sludge conditioning and modification device, which includes a treatment box, a rotating motor, a stirring shaft, a partition, a mobile driving mechanism and an adjustment mechanism. The device adjusts the size of the treatment space by setting a mobile partition in the treatment box to meet the treatment requirements of sludge from different sources. At the same time, the moving ring on the stirring shaft and the blades are linked by an electric push rod and a spring to adjust the blade position, thereby ensuring the uniformity of stirring.

[0004] However, the prior art still has the following defects and shortcomings: High structural complexity: The adjustment mechanism of the existing device relies on the cooperation of multiple precision components (such as electric push rods, springs, arc-shaped abutment plates, etc.), which has a complex structure, high manufacturing cost, difficult maintenance, and difficult to ensure the reliability of the device.

[0005] Limitations of treatment effect: Although the method of adjusting the size of the treatment space by moving the partitions can adapt to sludge from different sources, it is unable to effectively achieve uniform mixing and backmixing of materials during the dynamic stirring process, resulting in poor modification effect and affecting the efficiency of subsequent dehydration treatment.

[0006] Insufficient processing capacity for large pieces of material: The existing device relies solely on blades for stirring and lacks a special crushing function. When faced with large pieces of clumped sludge, the stirring efficiency is low and may even cause uneven force on the blades or jamming of the stirring shaft.

[0007] Insufficient transmission performance: The existing equipment does not fully consider the transportation needs of sludge. The sludge after mixing needs to be processed and transported separately, which increases the difficulty of connection between equipment and processing time. Summary of the invention

[0008] The problem to be solved by the present invention is that the existing technology has problems such as uneven stirring, weak crushing ability, high structural complexity and low conveying efficiency in actual use. A new stirring shaft sludge modification device is provided, which significantly improves the mixing uniformity of sludge and additives, the bulk material processing capacity, the integration of conveying and mixing, and the dehydration performance by optimizing the functional design and device structure of the stirring shaft.

[0009] In order to solve the above problems, the present invention provides a sludge modification device, including a tank body, a stirring shaft, and a driving device. The tank body is provided with a feed inlet, a discharge port, and a plurality of dosing ports. The stirring shaft is a double-shaft structure, on which a crushing element for crushing and back-mixing the material is provided, as well as a conveying element and a back-mixing element for pushing and back-mixing the material respectively; The driving device drives the stirring shaft to rotate through a power transmission mechanism, so as to promote uniform mixing of sludge and additives in the tank body, and transports the mixed materials to the discharge port through the conveying element.

[0010] Preferably, a movably connected cover body is provided on the top of the trough body, and a movable window is movably provided on the cover body.

[0011] Preferably, a cover buckle is provided on the trough body, and the cover buckle is movably connected to the cover body, and the movable window is connected to the cover body by a hinge. The device is equipped with a movably connected cover body and is designed with a movable window and a dosing port, which not only facilitates observation and operation of the equipment during operation, but also facilitates cleaning and maintenance, thereby improving the operating convenience of the device.

[0012] Preferably, the crushing element is a claw-shaped structure, which is arranged at the front section of the stirring shaft and is used to crush large pieces of material in the sludge.

[0013] Preferably, the conveying element is a spiral blade structure, which is arranged on the outer layer of the stirring shaft and is used to push the mixture forward.

[0014] Preferably, the back-mixing element is a reverse spiral blade structure, which is arranged on the inner layer of the stirring shaft and is used to return the unmixed materials to the stirring zone.

[0015] Preferably, the driving device includes a driving motor reducer, and the power transmission mechanism includes bearings and driving gears. The driving motor reducer drives the stirring shaft to rotate, and the shaft head of the stirring shaft rotates under the action of the bearing. The other end of the shaft head of the stirring shaft is installed with a driving gear. The driving gear drives the driven stirring shaft to rotate under the action of the rotation of the shaft head, so that the double stirring shafts rotate simultaneously.

[0016] Preferably, the dosing port includes a skeleton agent dosing port and a liquid agent dosing port, the motor reducer is installed in a motor mounting box, and the motor mounting box is fixedly mounted on the side plate of the tank body.

[0017] Preferably, support plates are provided on both sides of the lower end of the trough body, and reinforcing ribs are provided at the center of the lower end of the trough body. The design of the support seat and reinforcing ribs at the bottom of the trough body improves the overall structural strength of the equipment and ensures the stability of the device in long-term operation.

[0018] Preferably, the crushing element, the conveying element and the back-mixing element are welded to the stirring shaft via a support rod.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention effectively solves the problem of uneven stirring in the prior art by arranging a combination structure of a crushing element, a conveying element and a back-mixing element on the stirring shaft. The crushing element can preliminarily crush large pieces of material agglomerated in the sludge, the conveying element pushes the mixture forward, and the back-mixing element further returns the incompletely mixed material to the stirring zone for re-mixing, thereby ensuring sufficient and uniform mixing of the sludge and the additive, and significantly improving the modification effect.

[0020] The present invention adopts claw-shaped crushing elements, which are specially used for crushing large pieces of materials in sludge, so that there is no jamming phenomenon during the stirring process, the reliability of equipment operation is improved, and the problem of reduced mixing effect due to uneven material size is avoided.

[0021] The stirring shaft of the present invention is a double-shaft structure, and adopts a power transmission mechanism of bearings and gears, which simplifies the overall structure of the equipment and ensures the synchronous rotation of the double stirring shafts. Compared with the complex spring and push rod linkage mechanism in the prior art, the structure of the device is simpler and more reliable, reducing the manufacturing cost and the difficulty of subsequent maintenance.

[0022] The present invention uses the spiral blades of the conveying element to achieve full mixing of the materials and can convey the mixed sludge to the discharge port without the need for additional conveying equipment, thereby improving the overall efficiency of sludge treatment. By extending the mixing time of the materials in the stirring shaft and stirring them multiple times through the back-mixing element, the full mixing of the sludge and the additive significantly improves the dehydration performance and compression resistance of the sludge, providing a better modification basis for subsequent high-pressure dehydration treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the sludge modification device of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the positive direction of the sludge modification device of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the sludge modification device of the present invention when viewed from above.

[0026] Figure 4 It is a schematic diagram of the structure of the stirring shaft, crushing element, conveying element and back-mixing element.

[0027] In the figure: 1-tank body, 2-agitation shaft, 3-driving device, 4-feeding port, 5-discharging port, 6-crushing element, 7-conveying element, 8-return mixing element, 9-power transmission mechanism, 10-cover body, 11-movable window, 12-cover buckle, 13-reinforcing rib, 14-support plate, 15-liquid agent dosing port, 16-skeleton agent dosing port, 31-drive motor reducer, 32-motor mounting box, 33-support rod, 91-bearing, 92-drive gear. DETAILED DESCRIPTION

[0028] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1-4 As shown, the present invention provides a novel stirring shaft sludge modification device, comprising a tank body 1, a cover plate body 10, a driving device 3, and a stirring shaft 2. The tank body 1 is provided with a cover plate buckle 12, and the cover plate buckle 12 can be movably connected with the cover plate body 10. The tank body 1 is provided with a support plate 14, a reinforcing rib 13 and a discharge port 5. The support plate 14 and the reinforcing rib 13 strengthen the tank body 1, so that the device as a whole is more solid. The cover plate body 10 is provided with a movable window 11, and the movable window 11 is connected to the cover plate body 21 by a hinge, which is convenient for maintenance and observation. The cover plate body 10 is provided with a skeleton agent dosing port 16, a liquid agent dosing port 15, and a sludge feed port 4. The skeleton agent dosing port 16, the liquid agent dosing port 15, and the sludge feed port 4 are installed as a whole with the cover plate body 10 and are detachable.

[0030] The motor installation box 32 of the driving device 3 is installed on the side plate of the tank body 1. The motor installation box 32 is used to install the driving motor reducer 31. The driving motor reducer 31 drives the stirring shaft 2 to rotate. The shaft head of the stirring shaft 2 rotates under the action of the bearing 91 of the power transmission mechanism 9. The other shaft head of the stirring shaft 2 is installed with a driving gear 92. The driving gear 92 drives the driven stirring shaft 2 to rotate under the action of the shaft head rotation, so that the double stirring shafts rotate at the same time. The stirring shaft 2 is provided with three elements, including a crushing element 6, a conveying element 7, and a back-mixing element 8. The crushing element 6, the conveying element 7, and the back-mixing element 8 are welded to the stirring shaft 2 under the action of the support rod 33. The crushing element 6 is designed as a claw structure to better crush and mix the sludge.

[0031] The sludge enters from the sludge feed port 4, and a certain proportion of skeleton agent and liquid agent are added from the skeleton agent dosing port 16 and the liquid agent dosing port 15 respectively. The driving motor reducer 31 of the driving device 3 drives the stirring shaft 2 to work. The crushing element 6 on the stirring shaft 2 acts on the sludge first, and the large lumps of sludge in the feed sludge are first crushed by the crushing return spiral 6, so that the subsequent mixing is more uniform. At the same time, the crushing return spiral 6 can also prevent part of the sludge from accumulating in the corners of the side plates. The sludge and the added agent are subsequently mixed under the action of the conveying element 7 and the back-mixing element 8. The outer conveying element 7 continues to convey the mixed sludge to the discharge port 15, and the inner back-mixing element 8 returns part of the sludge that is not completely mixed inside, so that the sludge continues to be mixed and modified, and the mixing time is increased to improve the dehydration performance and pressure resistance of the sludge.

[0032] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0033] The specific working process is: first, the sludge to be treated is evenly added into the tank body 1 through the feed port 4, and at the same time, the skeleton agent and liquid agent in preset proportions are added through the skeleton agent dosing port 16 and the liquid agent dosing port 15 respectively, and enter the stirring area together with the sludge. The driving motor reducer 31 of the driving device 3 drives the stirring shaft 2 to work. The stirring shaft 2 rotates to drive the claw-shaped crushing element 6 to act on the sludge. The large agglomerated materials in the feed sludge are first crushed by the crushing element 6, and the crushed materials are crushed into smaller particles, so that the particle distribution of the sludge is more uniform, and the subsequent mixing is more uniform, while avoiding the situation that the mixing is uneven due to the aggregation of large pieces of materials. At the same time, the crushing element 6 can also prevent part of the sludge from accumulating in the corners of the side plates. The sludge and the added agent are subsequently mixed under the action of the outer conveying element 7 and the inner back-mixing element 8. The outer conveying element 7 continues to convey the mixed sludge to the discharge port 5, and the inner back-mixing element 8 returns part of the sludge that is not completely mixed inside. The crushed sludge is partially returned to the stirring zone under the action of the back-mixing element 8, so that the sludge continues to be mixed and modified, thereby extending the mixing time and further ensuring the uniform mixing of the sludge and the additives. To improve the dewatering performance and pressure resistance of the sludge. Sludge discharge: The mixed sludge is discharged through the discharge port 5 and transported to subsequent processing equipment for dehydration or other process treatment.

[0034] During operation, the mixing state of sludge and additives can be observed in real time through the movable window 11. If insufficient feeding or abnormal mixing is found, supplementation or adjustment can be made at any time through the dosing port.

[0035] After use, the movable window 11 is used to observe whether there is any uncleaned residual sludge inside the device, and the movable connection design of the cover body 10 is used to facilitate cleaning of the inside of the tank.

[0036] The present invention realizes the integrated processing of crushing, mixing, back-mixing and conveying of sludge from feeding to discharging through the claw-shaped design of the crushing element 6, the spiral blades of the conveying element 7 and the reverse spiral structure of the back-mixing element 8. It not only significantly improves the mixing efficiency of sludge and additives, but also improves the reliability of equipment operation and the convenience of maintenance, and provides a more efficient pretreatment means for subsequent sludge dehydration and disposal.

[0037] The stirring shaft 2 is a double-shaft structure, which adopts a power transmission mechanism of bearings and gears, which simplifies the overall structure of the equipment and ensures the synchronous rotation of the double stirring shafts. Compared with the complex spring and push rod linkage mechanism in the prior art, the structure of this device is simpler and more reliable, reducing the manufacturing cost and the difficulty of subsequent maintenance.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0039] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features of the invention described herein.

Claims

1. A sludge modification device, comprising a tank body (1), a stirring shaft (2), and a driving device (3), wherein the tank body (1) is provided with a feed inlet (4), a discharge outlet (5), and a plurality of dosing ports, characterized in that: The stirring shaft (2) is a double-shaft structure, on which a crushing element (6) for crushing and remixing the material is provided, as well as a conveying element (7) and a remixing element (8) for respectively pushing and remixing the material; The driving device (3) drives the stirring shaft (2) to rotate via a power transmission mechanism (9), thereby promoting uniform mixing of sludge and additives in the tank body (1), and conveying the mixed materials to the discharge port (5) via the conveying element (7).

2. The sludge modification device according to claim 1, characterized in that: A movably connected cover plate body (10) is provided on the top of the tank body (1), and a movable window (11) is movably provided on the cover plate body (10).

3. The sludge modification device according to claim 2, characterized in that: The trough body (1) is provided with a cover buckle (12), the cover buckle (12) is movably connected to the cover body (10), and the movable window (11) is connected to the cover body (10) using a hinge.

4. The sludge reforming device according to claim 1, characterized in that: The crushing element (6) is a claw-shaped structure, arranged at the front section of the stirring shaft (2), and used to crush large pieces of material in the sludge.

5. The sludge reforming device according to claim 1, characterized in that: The conveying element (7) is a spiral blade structure, which is arranged on the outer layer of the stirring shaft (2) and is used to push the mixture forward.

6. The sludge reforming device according to claim 1, characterized in that: The back-mixing element (8) is a reverse spiral blade structure, which is arranged on the inner layer of the stirring shaft (2) and is used to return the incompletely mixed materials to the stirring zone.

7. The sludge reforming device according to claim 1, characterized in that: The driving device (3) comprises a driving motor reducer (31), and the power transmission mechanism (9) comprises a bearing (91) and a driving gear (92). The driving motor reducer (31) drives the stirring shaft (2) to rotate, and the shaft head of the stirring shaft (2) rotates under the action of the bearing (91). The other shaft head of the stirring shaft (2) is equipped with a driving gear (92). The driving gear (92) drives the driven stirring shaft to rotate under the action of the shaft head rotation, so that the two stirring shafts rotate simultaneously.

8. The sludge reforming device according to claim 7, characterized in that: The drug adding port comprises a skeleton agent adding port (16) and a liquid agent adding port (15); the motor reducer (31) is installed in a motor installation box (32); and the motor installation box (32) is fixedly mounted on a side plate of the tank body (1).

9. The sludge reforming device according to claim 1, characterized in that: Support plates (14) are provided on both sides of the lower end of the trough body (1), and reinforcing ribs (13) are provided at the center of the lower end of the trough body (1).

10. The sludge reforming device according to claim 1, characterized in that: The crushing element (6), the conveying element (7), and the back-mixing element (8) are welded to the stirring shaft (2) via a support rod (33).

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