Slag guide mechanism for sewage treatment equipment

Abstract

The utility model discloses a slag guide mechanism for sewage treatment equipment, which comprises a slag guide device and a slag discharge flange pipe, the slag guide device comprises an outer cylinder, an inner cylinder arranged in the outer cylinder and a shaft sleeve connected with the inner cylinder, the outer cylinder is constructed into a cylindrical shell, and the bottom end of the cylindrical shell is internally contracted into a conical bottom shell; the inner barrel is constructed into a conical shell and is connected with the inner wall of the cylindrical shell through the top end, and the shaft sleeve is vertically connected to the top of the inner barrel through a connecting rod piece at the bottom; the deslagging flange pipe comprises a vertical deslagging pipe and a flange connector connected with the bottom of the deslagging pipe, at least part of the conical bottom shell is contained in the top of the deslagging pipe, and the flange connector is used for being connected with an external conveying pipe. The slag guide mechanism can guide grid slag at the slag outlet of the sieve bucket to vertically fall down under the action of gravity and smoothly discharge the grid slag out of the bottom of equipment to enter an external conveying pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a slag guiding mechanism for sewage treatment equipment. Background Art

[0002] At present, in municipal sewage treatment plants, for the treatment of sewage, fine grille equipment is often used. For the fine grille equipment, such as a hydraulic screen machine, it relies on an arc-shaped concave screen plate with a fixed width to separate solids and liquids in sewage. For the separated solid impurities, i.e., grid residues, they can be scraped to the lower edge of the screen plate and dropped. However, for this type of fine grille equipment, due to the length of the water outlet weir at the top of the screen plate being limited by the width of the screen plate, if a large sewage filtration volume is desired, the width and height of the screen plate need to be increased, thereby increasing the floor area of the equipment.

[0003] To solve this problem, a precision grille equipment has emerged. This precision grille equipment realizes the separation of solids and liquids in sewage through a hemispherical shell-shaped or bowl-shaped sieve bucket. The sieve bucket is of an overall hemispherical shell-shaped or bowl-shaped structure and is suspended in the inner barrel of the equipment. As Figure 1 shown, a sieve bucket 100 in a bowl-shaped structure in an embodiment is shown, including a circular upper edge 101, a bucket body, and a bucket bottom 104. The bucket body includes an upper ring body 102 and a lower ring body 103. A slag outlet 105 is provided at the center of the bucket bottom 104. When treating sewage, the sewage spreads over the water outlet weir of the circular upper edge 101 and quickly passes through the sieve holes on the bucket body under the action of gravity to separate solid impurities. The separated solid impurities, i.e., grid residues, are scraped out of the sieve holes through the combined action of water flow and a slag scraping mechanism and flushed to the slag outlet 105 to fall. This increases the length of the water outlet weir by nearly three times under the same width of the equipment, greatly increasing the filtration volume and effectively solving the problem of insufficient filtration volume of the original equipment.

[0004] However, at the same time, for this type of precision grille equipment, due to the annular slag outlet being provided at the bucket bottom, how to effectively guide the grid residues at the slag outlet to fall vertically by making full use of the gravity and smoothly discharge them from the bottom of the equipment to enter the external conveying pipe is a technical problem that needs to be solved by this precision grille equipment. Summary of the Utility Model

[0005] In order to solve the problem of how to guide the grid residues at the slag outlet of the sieve bucket to fall vertically by making full use of the gravity and smoothly discharge them from the bottom of the equipment to enter the external conveying pipe, the utility model proposes a slag guiding mechanism with a new structure for sewage treatment equipment.

[0006] To achieve the above object, the utility model adopts the following technical solutions: It includes a slag guide and a slag discharge flange pipe. The slag guide includes an outer cylinder, an inner cylinder disposed in the outer cylinder, and a bushing connected to the inner cylinder. The outer cylinder is configured as a cylindrical shell, and the bottom end of the cylindrical shell is inwardly tapered to form a conical bottom shell. The inner cylinder is configured as a conical shell and is connected to the inner wall of the cylindrical shell through the top end. The bushing is vertically connected to the top of the inner cylinder through a connecting rod member at the bottom;

[0007] The slag discharge flange pipe includes a vertical slag discharge pipe and a flange connection head connected to the bottom of the slag discharge pipe. At least a part of the conical bottom shell is accommodated inside the top of the slag discharge pipe, and the flange connection head is used to connect to an external conveying pipe.

[0008] Preferably, the whole inner cylinder is located inside the outer cylinder. The conical shell is connected to the inner wall of the cylindrical shell through the outer edge. There is a spacing distance between the top of the inner cylinder and the top of the outer cylinder, and there is a spacing distance between the bottom of the inner cylinder and the bottom of the outer cylinder. The outlet diameter of the conical bottom shell is larger than the outlet diameter of the conical shell.

[0009] Preferably, a bearing is installed at the top end of the bushing, and the rotating shaft of the slag scraping mechanism is rotatably installed at the top end of the bushing through the bearing.

[0010] Preferably, the connecting rod member includes a cross bar and a bottom plate. The bottom plate is disposed at the bottom end of the bushing and is connected to the center of the top of the cross bar. The outer ends of the rod bodies of the cross bar are connected to the inner wall of the conical shell.

[0011] Preferably, each rod body of the cross bar has a first upper inclined side wall and a second upper inclined side wall. The tops of the two upper inclined side walls are connected by an arc-shaped top wall. Each rod body of the cross bar also has a first bottom inclined wall and a second bottom inclined wall. The two bottom inclined walls are connected by an inwardly concave inverted V-shaped bottom wall.

[0012] Preferably, the part of the conical bottom shell near the bottom extends into the slag discharge pipe, and there is a spacing distance between the outer wall of the conical bottom shell and the inner wall of the slag discharge pipe.

[0013] Preferably, the top surface of the cylindrical shell is fixedly connected to the bottom surface of the hopper bottom at the edge of the slag discharge port, and the inner wall of the cylindrical shell is aligned with the inner wall of the slag discharge port.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are as follows:

[0015] Through the cooperative setting of the slag guide and the slag discharge flange pipe, on the one hand, the slag guide can carry the grid residue and vertically downwardly introduce it into the slag discharge flange pipe along its inner cylinder, and on the other hand, the slag discharge flange pipe has a vertical slag discharge pipe that can effectively increase the vertical dropping stroke of the grid residue. In this way, the grid residue can fully utilize the gravity effect to automatically form the effect of vertical dropping, and the vertically dropping grid residue can smoothly flow out into the external conveying pipe after passing through the slag discharge flange pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic diagram of the slag guide mechanism of the present utility model provided in the sieve hopper of the precision grille device;

[0017] Figure 2 FIG. is a schematic structural diagram of the slag guide of the slag guide mechanism of the present utility model;

[0018] Figure 3 FIG. is a schematic cross-sectional view of the slag guide of the slag guide mechanism of the present utility model;

[0019] Figure 4 FIG. is a schematic structural diagram of the cross bar of the slag guide.

[0020] LEGEND DESCRIPTION:

[0021] Slag guide 1, slag discharge flange pipe 2, outer cylinder 3, inner cylinder 4, bushing 5;

[0022] Connecting rod member 6, bottom plate 62;

[0023] Cross bar 61, first upper inclined side wall 611, second upper inclined side wall 612, arc top wall 613, first bottom inclined wall 614, second bottom inclined wall 615, inverted V-shaped bottom wall 616;

[0024] Slag discharge pipe 7, flange connector 8, rotating shaft 9, bearing 10;

[0025] Sieve hopper 100, annular upper edge 101, upper ring body 102, lower ring body 103, hopper bottom 104, slag discharge port 105, inner barrel 106. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to more clearly understand the above objects, features and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0027] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0028] AsFigure 1 The partial precision grille device shown includes a sieve hopper 100 with a bowl-shaped structure, and the sieve hopper 100 is suspended in the inner barrel 106 of the device. Since the overall structure of the sieve hopper 100 is bowl-shaped and has an annular slag discharge port 105. For the grille slag entering the slag discharge port 105, how to make the best use of its own gravity to vertically fall and smoothly convey it into the external conveying pipe is the problem that the slag guiding mechanism of the present utility model needs to solve.

[0029] Therefore, the slag guiding mechanism of the present utility model, as Figures 1 to 4 shown, includes a slag guide 1 and a slag discharge flange pipe 2. The slag guide 1 is used to introduce the grille slag entering the slag discharge port 105 and guide it to quickly enter the slag discharge flange pipe 2 under the action of gravity. The slag discharge flange pipe 2 has a certain vertical height, so that the grille slag can have enough falling distance after falling from the slag guide 1 to make full use of its gravity to obtain the kinetic energy of vertical falling, thereby preventing the grille slag from not falling smoothly.

[0030] Specifically, for the structural design scheme of the slag guide 1, there are various realizable structural schemes. In this embodiment, the following structural scheme is disclosed.

[0031] The slag guide 1 includes an outer cylinder 3, an inner cylinder 4 provided in the outer cylinder 3, and a bushing 5 connected to the inner cylinder 4. The outer cylinder 3 is configured as a cylindrical shell, and the bottom end of the cylindrical shell is inwardly tapered to form a conical bottom shell. The cylindrical shell makes the overall external contour of the slag guide 1 similar to a cylindrical structure, which is more regular and can form a unity with the shape of the lower slag discharge flange pipe 2. The conical bottom shell at the bottom can be placed inside the top of the slag discharge flange pipe 2. The inner cylinder 4 is configured as a conical shell and is connected to the inner wall of the cylindrical shell through the top end. The conical shell forms an inner conical surface, which can effectively guide the grille slag to flow into the inner cylinder 4. The bushing 5 is vertically connected to the top of the inner cylinder 4 through a connecting rod member 6 at the bottom. The setting of the bushing 5 can provide a rotating installation position for the rotating shaft 9 of the slag scraping mechanism in the sieve hopper 100, avoiding the need to provide an additional installation position for the rotating shaft 9 in the sieve hopper 100 and simplifying the internal structure of the sieve hopper. Through the comprehensive setting of the above components of the slag guide 1, the conical shell forms an internal guiding shell, the shape of the cylindrical shell matches the slag discharge flange pipe 2 and the annular slag discharge port 105, and the cooperation of the outer cylinder 3 and the inner cylinder 4 can, compared with the single setting of the shell, effectively increase the overall strength of the slag guide 1, extend the service life, and avoid the situation of frequent maintenance and replacement.

[0032] For the slag discharge flange pipe 2, in this embodiment, the following structural settings are mainly adopted.

[0033] The slag discharge flange pipe 2 includes a vertical slag discharge pipe 7 and a flange connector 8 connected to the bottom of the slag discharge pipe 7. At least a part of the conical bottom shell is accommodated inside the top of the slag discharge pipe 7. Specifically, in this embodiment, the part of the conical bottom shell near the bottom extends into the slag discharge pipe 7, and there is a spacing distance between the outer wall of the conical bottom shell and the inner wall of the slag discharge pipe 7. Thus, after the grid residue falls from the slag guide 1, it can directly fall vertically into the slag discharge pipe 7 without interference. And due to the existence of the spacing distance, the slag discharge flange pipe 2 does not need to bear the weight of the slag guide 1 and the sieve bucket 100, reducing the load on the slag discharge flange pipe 2. At the same time, to achieve the output of the grid residue, the flange connector 8 is connected to an external conveying pipe, and the external conveying pipe is connected to the flange connector 8. The flange connector 8 extends out of the bottom of the equipment as a whole, which is equivalent to connecting the conveying pipe outside the equipment. On the one hand, it facilitates the connection of the conveying pipe, and on the other hand, it is also conducive to realizing the conveying of the grid residue outside. It can be seen that the slag discharge flange pipe 2 is provided with a vertical slag discharge pipe 7 on the basis of the flange connector 8, so that after the grid residue falls from the slag guide 1, it has enough vertical falling distance, can give full play to and utilize the role played by the self-gravity of the grid residue, and form a fall with enough vertical distance, so that the grid residue obtains the best vertical state for smooth and rapid falling.

[0034] Regarding the specific settings of the outer cylinder 3 and the inner cylinder 4 of the slag guide 1, in this embodiment, the inner cylinder 4 is entirely located in the outer cylinder 3. The conical shell is connected to the inner wall of the cylindrical shell through its outer edge. There is a spacing distance between the top of the inner cylinder 4 and the top of the outer cylinder 3, and there is a spacing distance between the bottom of the inner cylinder 4 and the bottom of the outer cylinder 3. It can be seen that the inner cylinder 4 is entirely located in the outer cylinder 3 and does not protrude externally. The external structure is simple and regular, and the connection between the two uses the outer edge and the inner wall for connection, and makes the grid residue first pass through a short distance of the cylindrical outer cylinder 4 and then converge into the conical inner cylinder 4, forming a converging transition and avoiding directly entering the conical inner cylinder 4. The outlet diameter of the conical bottom shell is larger than the outlet diameter of the conical shell. Thus, the setting of the conical bottom shell will not affect or interfere with the conical shell, and the grid residue can smoothly and rapidly fall vertically.

[0035] It should be noted that, in order to realize the rotational installation of the rotating shaft 9, in this embodiment, a bearing 10 is installed at the top end of the shaft sleeve 5. The rotating shaft 9 of the slag scraping mechanism is rotationally installed at the top end of the shaft sleeve 5 through the bearing 10. Through the setting of the bearing 10, the rotation of the rotating shaft 9 will not affect the fixed installation of the slag guide 1.

[0036] Specifically, for the fixed installation of the slag guide 1, in this embodiment, the top surface of the cylindrical shell is fixedly connected to the bottom surface of the hopper bottom 104 at the edge of the slag discharge port 105, and the inner wall of the cylindrical shell is aligned with the inner wall of the slag discharge port 105. It can be seen that no protruding structures such as protrusions or indentations are formed at the connection. On the one hand, the structure is regular, on the other hand, the overall stress is reduced and the connection strength is increased. Generally speaking, it is beneficial to the smooth discharge of screen residue.

[0037] For the specific structural arrangement of the connecting rod member 6, there are many possible implementation methods. The following structural solution is specifically shown in this embodiment.

[0038] The connecting rod member 6 includes a cross rod 61 and a bottom plate 62. The bottom plate 62 is arranged at the bottom end of the bushing 5 and is connected to the center of the top of the cross rod 61. The outer end of the rod body of the cross rod 61 is connected to the inner wall of the conical shell. The cross rod 61 itself has a firm structure and has a certain connection strength, and at the same time does not interfere with the smooth falling of the screen residue. After the bottom plate 62 is connected to the center of the top of the cross rod 61, it has a sufficient connection contact area to ensure the connection firmness of the two.

[0039] In this embodiment, the specific structure of the cross rod 61 is also optimized and improved. Different from the conventional cylindrical rod or conical rod, each rod body of the cross rod 61 has a first upper inclined side wall 611 and a second upper inclined side wall 612, and the tops of the two upper inclined side walls are connected by an arc top wall 613. Each rod body of the cross rod 61 also has a first bottom inclined wall 614 and a second bottom inclined wall 615, and the two bottom inclined walls are connected by an inwardly concave inverted V-shaped bottom wall 616. For the cross rod 61 with this structure, on the one hand, it has a triangular receiving wall. When the screen residue encounters the receiving wall, the resistance is small and it can fall quickly, and the triangular receiving wall can also play a role in guiding the screen residue to fall. On the other hand, considering the weight of the screen residue, through the above structure, the structural strength of the entire rod body is effectively enhanced, so that it can bear the weight of the screen residue without deformation.

[0040] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A slag guiding mechanism for sewage treatment equipment, characterized in that , including a slag guide and a slag discharge flange pipe, the slag guide includes an outer cylinder, an inner cylinder arranged on the outer cylinder, and a sleeve connected to the inner cylinder, the outer cylinder is configured as a cylindrical shell and the bottom end of the cylindrical shell is retracted inward to form a conical bottom shell, the inner cylinder is configured as a conical shell and is connected to the inner wall of the cylindrical shell through the top end, and the sleeve is vertically connected to the top of the inner cylinder through a connecting rod at the bottom; The slag discharge flange pipe comprises a vertical slag discharge pipe and a flange connector connected to the bottom of the slag discharge pipe. At least a portion of the conical bottom shell is accommodated in the top of the slag discharge pipe. The flange connector is used to connect to an external conveying pipe.

2. The slag guiding mechanism for sewage treatment equipment according to claim 1, characterized in that: The inner cylinder is entirely located in the outer cylinder, the conical shell is connected to the inner wall of the cylindrical shell through the outer edge, a spacing distance is left between the top of the inner cylinder and the top of the outer cylinder, a spacing distance is left between the bottom of the inner cylinder and the bottom of the outer cylinder, and the outlet diameter of the conical bottom shell is larger than the outlet diameter of the conical shell.

3. A slag guiding mechanism for sewage treatment equipment according to claim 1 or 2, characterized in that: A bearing is installed on the top of the shaft sleeve, and the rotating shaft of the scraper mechanism is rotatably installed on the top of the shaft sleeve through the bearing.

4. The slag guiding mechanism for sewage treatment equipment according to claim 3, characterized in that: The connecting rod comprises a cross rod and a bottom plate, wherein the bottom plate is arranged at the bottom end of the shaft sleeve and connected to the top center of the cross rod, and the outer end of the cross rod is connected to the inner wall of the conical shell.

5. The slag guiding mechanism for sewage treatment equipment according to claim 4, characterized in that: Each rod body of the cross rod has a first upper inclined side wall and a second upper inclined side wall, the tops of the two upper inclined side walls are connected by an arc-shaped top wall, and each rod body of the cross rod also has a first bottom inclined wall and a second bottom inclined wall, and the two bottom inclined walls are connected by a concave inverted V-shaped bottom wall.

6. The slag guiding mechanism for sewage treatment equipment according to claim 1, characterized in that: The portion of the conical bottom shell body close to the bottom extends into the slag discharge pipe, and a spacing distance is left between the outer wall of the conical bottom shell body and the inner wall of the slag discharge pipe.

7. The slag guiding mechanism for sewage treatment equipment according to claim 1, characterized in that: The top surface of the cylindrical shell is fixedly connected to the bottom surface of the bucket bottom at the edge of the slag outlet, and the inner wall of the cylindrical shell is aligned with the inner wall of the slag outlet.

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