Secondary spreading trolley and multi-layer stacked solid-liquid separation system

Abstract

The utility model relates to sludge drying equipment, in particular to a secondary spreading trolley and a multi-layer stacked solid-liquid separation system. Compared with the existing secondary spreading trolley, the secondary spreading trolley provided by the utility model has the advantage that the structure of the filter cloth push rod is improved. The improved filter cloth push rod comprises at least one rotatable first roller body, and the lower part of the filter cloth push rod is in contact with the filter cloth through the first roller body, so that the friction between the filter cloth push rod and the filter cloth is changed into improved rotating friction from sliding friction before improvement, and the abrasion of the filter cloth push rod to the filter cloth is reduced.

Description

Technical Field

[0001] This utility model relates to a sludge drying device, and in particular to a two-stage material spreading trolley and a multi-layer stacked solid-liquid separation system. Background Technology

[0002] Chinese patent document CN119303356A describes a secondary material spreading trolley, which has the following defects: (See the attached drawings in the patent document specification). Figure 4 , 5 According to paragraphs 0021, 0024, and 0025 of the specification, when the upper body of the secondary material spreading trolley moves forward and the filter cloth pusher pushes the filter cloth, the arc surface on the front side of the filter cloth pusher (marked as P in the attached drawing of the patent document) generates sliding friction with the filter cloth in front, which can easily wear and scratch the filter cloth. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to improve the structure of the filter cloth push rod of the secondary material spreading trolley so as to reduce the degree of wear on the filter cloth when the filter cloth push rod pushes the filter cloth.

[0004] To solve the above-mentioned technical problems, this utility model provides a two-stage material spreading trolley for use in a multi-layer stacked solid-liquid separation system. The two-stage material spreading trolley includes a bottom trolley body and an upper trolley body disposed on the bottom trolley body. The upper trolley body is used to spread filter cloth during the back-and-forth movement relative to the bottom trolley body. The upper trolley body includes a trolley body main body and a filter cloth push rod. The filter cloth push rod is disposed on the front side of the trolley body main body and is used to push the filter cloth. The lower part of the filter cloth push rod is more forward-protruding than the upper part. The filter cloth push rod includes at least one rotatable first roller body. The lower part of the filter cloth push rod contacts the filter cloth through the first roller body.

[0005] Furthermore, the filter cloth push rod also includes at least one rotatable second roller, which is located above and behind the first roller, and the upper part of the filter cloth push rod contacts the filter cloth through the second roller.

[0006] Furthermore, the filter cloth push rod also includes a first roller frame and a second roller frame, with the first roller body disposed on the first roller frame and the second roller body disposed on the second roller frame. Both the first roller frame and the second roller frame are fixedly connected to the main body of the vehicle.

[0007] Furthermore, the first roller frame is detachably fixed to the vehicle body by fasteners, and the first roller frame is provided with a first strip groove / hole in the vertical direction, so that the position of the first roller frame relative to the vehicle body can be adjusted vertically.

[0008] Furthermore, the second roller frame is detachably fixed to the first roller frame by fasteners, and the second roller frame is provided with a second strip groove / hole in the vertical direction, so that the position of the second roller frame relative to the first roller frame can be adjusted vertically.

[0009] Furthermore, the first roller frame includes a first frame and a first fixing block, with at least one first fixing block corresponding to a first roller. The first fixing block is fixed to the first frame by fasteners, and the first roller is sandwiched between the first frame and the corresponding first fixing block. The second roller frame includes a second frame and a second fixing block, with at least one second fixing block corresponding to a second roller. The second fixing block is fixed to the second frame by fasteners, and the second roller is sandwiched between the second frame and the corresponding second fixing block.

[0010] Furthermore, the axes of the first roller and the second roller are both located in an inclined plane, and the angle between the inclined plane and the horizontal plane is 62°±5°; the diameters of the first roller and the second roller satisfy the condition that when the filter cloth push rod pushes the filter cloth, the filter cloth only contacts the first roller and the second roller.

[0011] This utility model also provides a multi-layer stacked solid-liquid separation system, which includes a secondary material spreading trolley provided by this utility model.

[0012] Compared with the secondary material spreading trolley mentioned in the background art, the secondary material spreading trolley provided by this utility model optimizes the structure of the filter cloth push rod, so that when the filter cloth push rod pushes the filter cloth, the filter cloth push rod and the filter cloth generate rolling friction, which reduces the wear of the filter cloth push rod on the filter cloth compared with the generation of sliding friction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the upper vehicle body structure according to an embodiment of the present invention;

[0014] Figure 2 for Figure 1 The diagram shows the assembly of the upper vehicle body.

[0015] Figure 3 for Figure 2 The diagram shows the assembly of the filter cloth push rod.

[0016] Figure 4 for Figure 3 The diagram shows the assembly of the first frame, the first fixing block, and the first roller.

[0017] Figure 5 for Figure 3 The diagram shows the assembly of the second frame and the second roller.

[0018] Figure 6 for Figure 1 The diagram shows a comparison between the upper vehicle body and the upper vehicle body pushing the filter cloth as mentioned in the background art. (a) is a schematic diagram of the upper vehicle body pushing the filter cloth as mentioned in the background art, and (b) is... Figure 1 The diagram shows the upper vehicle body pushing the filter cloth. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and one embodiment thereof.

[0020] In one embodiment, the multi-layer stacked solid-liquid separation system provided by this utility model includes a high-pressure dewatering mechanism for dewatering sludge, a filter cloth receiving and releasing mechanism for receiving and releasing filter cloth, a secondary material spreading trolley for spreading sludge onto the filter cloth, and a feeding pipe for feeding the secondary material spreading trolley. For the basic structure and principle of this multi-layer stacked solid-liquid separation system, please refer to Chinese Patent Document CN119320228A, which will not be elaborated here. For the basic structure and principle of the secondary material spreading trolley, please refer to Chinese Patent Document CN119303356A, which will not be elaborated here. This document will detail the differences between the secondary material spreading trolley mentioned in this document and Chinese Patent Document CN119303356A, so that those skilled in the art, by combining this document with Chinese Patent Documents CN119320228A and CN119303356A, can design this multi-layer stacked solid-liquid separation system.

[0021] This secondary material spreading trolley includes a bottom trolley and an upper trolley mounted on the bottom trolley. The upper trolley spreads the filter cloth as it moves back and forth relative to the bottom trolley. The difference between this secondary material spreading trolley and the one mentioned in Chinese patent document CN119303356A lies in the upper trolley. This invention reduces wear on the filter cloth by replacing the part of the filter cloth push rod that contacts the filter cloth in Chinese patent document CN119303356A with a rotatable roller.

[0022] See Figures 1 to 6 In this embodiment, the upper vehicle body includes a vehicle body 1 and a filter cloth push rod 2 disposed on the front side of the vehicle body 1 for pushing the filter cloth C. The lower part of the filter cloth push rod 2 protrudes further forward than the upper part. The filter cloth push rod 2 includes a first roller frame 21 and a second roller frame 22. The first roller frame 21 is detachably fixed to the vehicle body 1 by fasteners (screws S1, etc.), and the second roller frame 22 is detachably fixed to the first roller frame 21 by fasteners (screws S2, etc.).

[0023] The first roller frame 21 is provided with multiple rotatable first rollers 23, and the lower part of the filter cloth push rod 2 contacts the filter cloth C through the first rollers 23. The second roller frame 22 is provided with multiple rotatable second rollers 24, and the upper part of the filter cloth push rod 2 contacts the filter cloth C through the second rollers 24. The second rollers 24 are located above and behind the first rollers 23. When the filter cloth push rod 2 pushes the filter cloth C in front, it contacts the filter cloth C through the rotatable first rollers 23 and second rollers 24, so that the filter cloth push rod 2 and the filter cloth C generate rolling friction. Compared with sliding friction, it has the characteristic of less friction and reduces the wear of the filter cloth push rod 2 on the filter cloth C.

[0024] Different first rollers and different second rollers can have the same or different lengths. In this embodiment, the middle second roller 23 is longer than the other second rollers 23. In other embodiments, the number and length design of the first rollers and the number and length design of the second rollers may be different from this embodiment, but if the roller length is too long, the shaft of the roller will be subjected to greater force and is easily damaged.

[0025] In this embodiment, the first roller frame 21 is provided with a first strip groove 211 along the vertical direction, allowing the first roller frame 21 to be adjusted vertically relative to the vehicle body 1. The second roller frame 22 is provided with a second strip groove 221 along the vertical direction, allowing the second roller frame 22 to be adjusted vertically relative to the first roller frame 21. When adjusting the position of the first roller frame 21 upwards, care should be taken to ensure that the lowest point of the first roller body 23 is lower than the vehicle body 1, and the upward adjustment should not be excessive. When implementing this utility model, those skilled in the art can, as needed, eliminate the adjustable design of the first and second roller frames, and design the first and second roller frames as a single unit.

[0026] In this embodiment, see Figure 4 The first roller frame 21 includes a first frame 212 and a plurality of first fixing blocks 213. There is a first fixing block 213 corresponding to a first roller 23. The first fixing block 213 is fixed on the first frame 212 by fasteners (screws S3, etc.). The first roller 23 is sandwiched between the first frame 212 and the corresponding first fixing block 213. When installing the first roller 23, first insert one end into the insertion hole on the first frame 212. After it is placed, lock the corresponding first fixing block 213 to complete the limiting of the other end of the first roller 23.

[0027] See Figure 5 The second roller frame 22 includes a second frame 222 and a plurality of second fixing blocks. There is a second fixing block corresponding to a second roller 24. The second fixing block is fixed on the second frame 222 by fasteners (screws, etc.). The second roller 24 is sandwiched between the second frame 222 and the corresponding second fixing block. Figures 1 to 6 The second fixing block and its corresponding fasteners are not shown. The structure of the second fixing block can be referenced from the first fixing block 213.

[0028] The axes of the first roller 23 and the second roller 24 are both located in an inclined plane, with an angle α of 62°±5° between this inclined plane and the horizontal plane. Figure 6As shown in (a) and (b), the length and tilt angle of the filter cloth C between the first roller 23 and the second roller 24 in this embodiment are larger than those in the prior art, which is beneficial for the smooth folding of the filter cloth C. The diameters of the first roller 23 and the second roller 24 satisfy the following: when the filter cloth push rod 2 pushes the filter cloth C, the filter cloth C only contacts the first roller 23 and the second roller 24, and does not scrape against the first roller frame 21 and the second roller frame 22.

[0029] In this embodiment, widening accessories A are detachably installed at both ends of the first roller frame 21 and the second roller frame 22. The function of widening accessories A is the same as that of widening accessories in Chinese patent document CN119303356A.

Claims

1. A secondary material spreading trolley for use in a multi-layer stacked solid-liquid separation system, the secondary material spreading trolley comprising a bottom trolley body and an upper trolley body disposed on the bottom trolley body, the upper trolley body being used to spread filter cloth during the back-and-forth movement relative to the bottom trolley body, the upper trolley body comprising a trolley body main body (1) and a filter cloth push rod (2), the filter cloth push rod (2) being disposed on the front side of the trolley body main body (1) for pushing the filter cloth, the lower part of the filter cloth push rod (2) being more forward-protruding than the upper part, characterized in that: The filter cloth push rod (2) includes at least one rotatable first roller (23), and the lower part of the filter cloth push rod (2) contacts the filter cloth through the first roller (23).

2. The secondary material spreading trolley as described in claim 1, characterized in that: The filter cloth push rod (2) also includes at least one rotatable second roller (24), which is located above and behind the first roller (23), and the upper part of the filter cloth push rod (2) contacts the filter cloth through the second roller (24).

3. The secondary material spreading trolley as described in claim 2, characterized in that: The filter cloth push rod (2) also includes a first roller frame (21) and a second roller frame (22). The first roller body (23) is located on the first roller frame (21), and the second roller body (24) is located on the second roller frame (22). The first roller frame (21) and the second roller frame (22) are both fixedly connected to the main body of the vehicle (1).

4. The secondary material spreading trolley as described in claim 3, characterized in that: The first roller frame (21) is detachably fixed to the vehicle body (1) by fasteners. The first roller frame (21) is provided with a first strip groove / hole in the vertical direction, so that the position of the first roller frame (21) relative to the vehicle body (1) can be adjusted vertically.

5. The secondary material spreading trolley as described in claim 4, characterized in that: The second roller frame (22) is detachably fixed to the first roller frame (21) by fasteners. The second roller frame (22) is provided with a second strip groove / hole in the vertical direction, so that the second roller frame (22) can be adjusted vertically relative to the first roller frame (21).

6. The secondary material spreading trolley as described in claim 3, characterized in that: The first roller frame (21) includes a first frame (212) and a first fixing block (213). There is at least one first fixing block (213) corresponding to a first roller body (23). The first fixing block (213) is fixed on the first frame (212) by fasteners. The first roller body (23) is sandwiched between the first frame (212) and the corresponding first fixing block (213). The second roller frame (22) includes a second frame (222) and a second fixing block. There is at least one second fixing block corresponding to a second roller body (24). The second fixing block is fixed on the second frame (222) by fasteners. The second roller body (24) is sandwiched between the second frame (222) and the corresponding second fixing block.

7. The secondary material spreading trolley as described in claim 2, characterized in that, The axis of the first roller (23) and the axis of the second roller (24) are both located in an inclined plane, and the angle between the inclined plane and the horizontal plane is 62°±5°. The diameters of the first roller (23) and the second roller (24) satisfy the following: when the filter cloth push rod (2) pushes the filter cloth, the filter cloth only contacts the first roller (23) and the second roller (24).

8. A multilayer stacked solid-liquid separation system, characterized in that: Includes a secondary material spreading trolley as described in any one of claims 1 to 7.

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