Sludge dewatering device for water conservancy construction

Abstract

The invention relates to the technical field of sewage filtration, in particular to a sludge dewatering device for water conservancy construction, which comprises a rack, a hydraulic cylinder is arranged at one end of the rack, a plurality of rectangular filter pressing plate frames are slidably arranged on the rack along the front-back direction, and filter cloth is arranged on the front and back side surfaces of the filter pressing plate frames. The filter cloth is used for filtering sludge; the hydraulic cylinder is used for pushing the multiple filter pressing plate frames to make contact with one another, a filter pressing cavity is defined by every two adjacent filter pressing plate frames, deformable liquid bags are arranged at the bottoms of the filter pressing plate frames and located on the front side faces or the rear side faces of the filter pressing plate frames or correspond to the front side faces or the rear side faces of the filter pressing plate frames at the same time, liquid filling channels are formed in the filter pressing plate frames, and the liquid filling channels are communicated with the liquid filling channels. The liquid filling channel is used for injecting liquid into the liquid bag or sucking the liquid so as to control the liquid bag to expand or contract; the liquid bag can form a lower frame on the corresponding side surface of the filter pressing plate frame after being expanded, and the mud cake can automatically fall off after the liquid bag is contracted, so that the mud cake unloading efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage filtration, and in particular to a sludge dewatering device for water conservancy construction. Background Art

[0002] A lot of sludge will be generated in the process of water conservancy construction. The treatment of sludge usually requires the use of a plate and frame filter press. The plate and frame filter press uses multiple sets of filter plates and frames to perform multi-stage filtration on the sludge and press the sludge into mud cakes for collection.

[0003] After filtering the sludge, the existing plate and frame filter press separates the two filter plates and frames from each other, and uses the sludge's own weight to drop. However, due to the sealed edge structure of the filter plates and frames, the mud cake is very easy to stick to the filter plates and frames, making it difficult to remove the filter cake. Summary of the invention

[0004] Based on this, it is necessary to provide a sludge dewatering device for water conservancy construction to address the technical problem that the mud cake of the current plate and frame filter press is difficult to remove.

[0005] The above purpose is achieved through the following technical solutions: A sludge dewatering device for water conservancy construction comprises a frame, one end of the frame is provided with a hydraulic cylinder, a plurality of filter press frames are slidably arranged on the frame along the front and rear directions, the filter press frames are rectangular, the front and rear sides of the filter press frames are provided with filter cloths, and the filter cloths are used to filter sludge; the hydraulic cylinder is used to push the plurality of filter press frames to contact each other so that a filter press chamber is formed between two adjacent filter press frames, a deformable liquid capsule is provided at the bottom of the filter press frame, the liquid capsule is located at the front side or rear side of the filter press frame or corresponds to both the front and rear sides at the same time, when the liquid capsule is located at the front side or rear side of the filter press frame, a lower frame is provided on the other front and rear sides of the filter press frame, and the lower frame can support the liquid capsule; a liquid filling channel is provided inside the filter press frame, and the liquid filling channel is used to inject liquid into the liquid capsule or suck liquid, so as to control the expansion or contraction of the liquid capsule; after the liquid capsule expands, its lower frame on the corresponding side of the filter press frame can be formed, and after the liquid capsule contracts, the mud cake can fall automatically.

[0006] Furthermore, diaphragms are provided on both the front and rear sides of the filter press plate frame, a diaphragm cavity is formed between the diaphragm and the filter press plate frame, and the diaphragm cavity is communicated with the interior of the liquid capsule.

[0007] Furthermore, the front and rear sides of the filter press plate frame also have a left frame, a right frame and an upper frame, and the opposite sides of the left frame and the right frame are each provided with a plurality of filter holes, the upper frame is provided with two reflux holes, the filter holes are connected to the reflux holes, and the frame is provided with two liquid outlet pipes, and the liquid outlet pipes correspond to the reflux holes front and back.

[0008] Furthermore, a liquid inlet is provided at the center of the filter press plate frame, the liquid inlet is communicated with the filter press chamber, and a liquid inlet pipe is also provided on the frame, the liquid inlet pipe corresponds to the liquid inlet in front and back.

[0009] Furthermore, the liquid filling channel is located in the lower half of the filter press plate frame, and the liquid filling channel includes a first flow channel and a fourth flow channel arranged in parallel, the first flow channel and the fourth flow channel both extend in the left-right direction, a third flow channel is arranged between the first flow channel and the fourth flow channel, the third flow channel extends in the up-down direction, the lower end of the third flow channel is connected to the interior of the liquid capsule, and the left and right ends of the fourth flow channel correspond to the left and right ends of the liquid capsule.

[0010] Furthermore, the first flow channel is provided with a plurality of second flow channels extending in the front-to-back direction, and the second flow channels are connected to the front and rear diaphragm cavities.

[0011] Furthermore, a control water pipe is provided on one side of the filter press plate frame, and the control water pipe is communicated with the first flow channel.

[0012] Furthermore, the liquid capsule corresponds to the front and rear sides of the filter press plate frame, and the left frame and the right frame of the filter press plate frame are both provided with mounting parts, and the mounting parts are used to mount the liquid capsule, and the mounting parts are in an inverted V shape.

[0013] Furthermore, a sliding bracket is fixedly provided on the left frame and the right frame of the filter press plate frame, and a support plate extending in the front-to-back direction is provided on the frame, and the sliding bracket can slide along the support plate.

[0014] Furthermore, the frame includes a front mounting box and a rear mounting box, the hydraulic cylinder is fixedly arranged on the front mounting box, and the liquid inlet pipe and the liquid outlet pipe are fixedly arranged on the rear mounting box.

[0015] The beneficial effects of the present invention are: The sludge dewatering device for water conservancy construction provided by the present invention selects the liquid capsule to be located on the side of the filter press frame according to the flow direction of the sludge when processing the sludge. If the sludge flows from front to back, the mud cake is easy to adhere to the front side of the filter press frame, so the liquid capsule is arranged on the front side of the filter press frame; if the sludge flows from back to front, the mud cake is easy to adhere to the rear side of the filter press frame, so the liquid capsule is arranged on the rear side of the filter press frame; if the sludge flows from both ends of the filter press frame to the middle at the same time, the mud cake will randomly adhere to the front and rear sides of each filter press frame, so the liquid capsule is simultaneously arranged to correspond to the front and rear sides of the filter press frame; in this way, when the filter press is carried out, the liquid capsule is expanded through the liquid filling channel, and the liquid capsule constitutes its lower frame on the corresponding side of the filter press frame, and the lower frame supports the mud cake. After the filter press is completed, the liquid is sucked through the liquid filling channel to shrink the liquid capsule, and the mud cake is no longer supported by the lower frame, so that it can fall directly under its own gravity, thereby improving the mud cake unloading efficiency.

[0016] Secondly, by setting a deformable liquid sac, the liquid sac can be expanded to achieve sealing under two adjacent filter press plates, and the mud cake can fall after the liquid sac shrinks, so that the mud cake does not contact the sealing structure under the filter press plate frame, thereby ensuring the sealing effect of the side of the filter press plate frame; and when the liquid sac expands again, the sludge attached to its surface can be bounced off, thereby improving the sludge removal effect.

[0017] Third, since a liquid bag is arranged in the lower part of the filter press frame, the water in the liquid bag is sucked away after the filtration is completed, so that the center of mass of the filter press frame is moved upward. In this way, when the mud cake is unloaded, the filter press frame slides back and forth along the frame, and the lower part of the filter press frame is not easy to swing, thereby avoiding wear of the filter cloth of the filter press frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a sludge dewatering device for water conservancy construction provided by one embodiment of the present invention; Figure 2 A schematic diagram of the structure of a filter press frame in a sludge dewatering device for water conservancy construction provided by an embodiment of the present invention; Figure 3 A side view of a filter press frame in a sludge dewatering device for water conservancy construction provided by one embodiment of the present invention; Figure 4 A front view of a filter press plate frame in a sludge dewatering device for water conservancy construction provided by one embodiment of the present invention; Figure 5 for Figure 4 Middle AA section view; Figure 6 A schematic diagram of a partially cutaway structure of a filter press frame in a sludge dewatering device for water conservancy construction provided by one embodiment of the present invention; Figure 7 for Figure 5 Another state diagram of ; Figure 8 for Figure 3 Another state diagram of ; Fig. 9 A cross-sectional view of a filter press plate frame in a sludge dewatering device for water conservancy construction provided in another embodiment of the present invention.

[0019] in: 100, filter plate frame; 101, reflux hole; 102, filter hole; 103, liquid inlet; 104, upper frame; 105, sliding bracket; 106, mounting part; 107, left frame; 108, right frame; 200, rack; 201, front installation box; 202, rear installation box; 203, liquid outlet pipe; 204, liquid inlet pipe; 205, support plate; 300, control water pipe; 400, first diaphragm; 500, liquid capsule; 600, second diaphragm; 800, first flow channel; 801, second flow channel; 802, third flow channel; 803, fourth flow channel; 900, filter press chamber; 1000, filter cloth. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] like Figures 1 to 9 As shown, a sludge dewatering device for water conservancy construction provided by an embodiment of the present invention comprises a frame 200, one end of the frame 200 is provided with a hydraulic cylinder, a plurality of filter press frames 100 are slidably provided on the frame 200 along the front-back direction, the filter press frames 100 are rectangular, and filter cloths 1000 are provided on the front and rear sides of the filter press frames 100, and the filter cloths 1000 are used to filter sludge; the hydraulic cylinder is used to push the plurality of filter press frames 100 to contact each other, so that a filter press cavity 900 is formed between two adjacent filter press frames 100, and a deformable liquid capsule 500 is provided at the bottom of the filter press frame 100, and the liquid capsule 500 is positioned On the front side or rear side of the filter press plate frame 100 or corresponding to both the front and rear sides, when the liquid capsule 500 is located on the front side or rear side of the filter press plate frame 100, the other front and rear side of the filter press plate frame 100 is provided with a lower frame (not shown in the figure), and the lower frame can support the liquid capsule 500; the interior of the filter press plate frame 100 is provided with a liquid filling channel, and the liquid filling channel is used to inject liquid into or suck liquid into the liquid capsule 500, so as to control the expansion or contraction of the liquid capsule 500; after the liquid capsule 500 is expanded, it can form its lower frame on the corresponding side of the filter press plate frame 100, and after the liquid capsule 500 is contracted, the mud cake can fall automatically.

[0024] In this way, when treating sludge, the liquid capsule 500 is selected to be located on the side of the filter press frame 100 according to the flow direction of the sludge. If the sludge flows from front to back, the mud cake is easily attached to the front side of the filter press frame 100, so the liquid capsule 500 is set on the front side of the filter press frame 100; if the sludge flows from back to front, the mud cake is easily attached to the rear side of the filter press frame 100, such as Fig. 9 As shown, the liquid capsule 500 is arranged on the rear side of the filter press frame 100; if the sludge flows from both ends of the filter press frame 100 to the middle at the same time, the mud cake will randomly adhere to the front and rear sides of each filter press frame 100, as shown in FIG. Figure 5As shown, the liquid capsule 500 is simultaneously corresponding to the front and rear sides of the filter press frame 100; in this way, when the filter press is in progress, the liquid capsule 500 is expanded through the liquid filling channel, and the liquid capsule 500 constitutes its lower frame on the corresponding side of the filter press frame 100, and the lower frame supports the mud cake. After the filter press is completed, the liquid is sucked through the liquid filling channel to shrink the liquid capsule 500, and the mud cake is no longer supported by the lower frame, so it can fall directly under its own gravity, thereby improving the mud cake unloading efficiency.

[0025] In one embodiment, a diaphragm is provided on both the front and rear sides of the filter press plate frame 100, a diaphragm cavity is formed between the diaphragm and the filter press plate frame 100, and the diaphragm is integrally formed with the liquid capsule 500. The diaphragm cavity is connected to the interior of the liquid capsule 500. The diaphragm includes a first diaphragm 400 on the front side and a second diaphragm 600 on the rear side, and the first diaphragm 400 and the second diaphragm 600 are both rectangular. In this way, the contraction or expansion of the liquid capsule 500 can cause the diaphragm to contract or expand as well, and the diaphragm can squeeze the mud cake after expansion, further dehydrate the sludge, and improve the dehydration effect of the sludge, and the contraction of the diaphragm can make the front and rear sides of the mud cake no longer contact the front and rear sides of the filter press plate frame 100, further improving the unloading efficiency of the mud cake.

[0026] In one embodiment, the front and rear sides of the filter press plate frame 100 also have a left frame 107, a right frame 108 and an upper frame 104, and the left frame 107 and the right frame 108 are provided with a plurality of filter holes 102 on the opposite sides, and the upper frame 104 is provided with two reflux holes 101, and the filter holes 102 are connected with the reflux holes 101, and the frame 200 is provided with two liquid outlet pipes 203, and the liquid outlet pipes 203 correspond to the reflux holes 101 in front and back. The reflux holes 101 of the plurality of filter press plate frames 100 correspond to each other and form a reflux channel, and the reflux channel is connected with the liquid outlet pipe 203, so that the filtered water flows out from the top of the sludge dewatering device for water conservancy construction. The left frame 107, the right frame 108 and the upper frame 104 are all provided with sealing surfaces, so as to ensure the sealing effect between two adjacent filter press plate frames 100.

[0027] In one embodiment, a liquid inlet 103 is provided at the center of the filter press plate frame 100, and the liquid inlet 103 is communicated with the filter press chamber 900. A liquid inlet pipe 204 is also provided on the frame 200, and the liquid inlet pipe 204 corresponds to the liquid inlet 103 in front and back. The liquid inlets 103 of the plurality of filter press plate frames 100 correspond to each other and form a liquid inlet channel, and the liquid inlet channel is communicated with the liquid inlet pipe 204, so that the sludge enters each filter press chamber 900 for filtration.

[0028] In one embodiment, the liquid filling channel is located at the lower half of the filter press plate frame 100, and the liquid filling channel includes a first flow channel 800 and a fourth flow channel 803 arranged in parallel, the first flow channel 800 and the fourth flow channel 803 both extend in the left-right direction, a third flow channel 802 is arranged between the first flow channel 800 and the fourth flow channel 803, the third flow channel 802 extends in the up-down direction, the lower end of the third flow channel 802 is connected to the inside of the liquid capsule 500, and the left and right ends of the fourth flow channel 803 correspond to the left and right ends of the liquid capsule 500. This arrangement first expands the liquid capsule 500, and then the diaphragm expands, so that the liquid capsule 500 forms a lower frame to support the mud cake, and then the diaphragm expands to dehydrate the mud cake.

[0029] In one embodiment, the first flow channel 800 is provided with a plurality of second flow channels 801 extending in the front-to-back direction, and the second flow channels 801 connect the front and rear diaphragm cavities, so that the two diaphragm cavities can expand synchronously and each position of the liquid capsule 500 can expand evenly.

[0030] In one embodiment, a control water pipe 300 is provided on one side of the filter press frame 100, and the control water pipe 300 is connected to the first flow channel 800. The control water pipe 300 is connected to a water pump, and the water pump is used to inject or suck liquid into the liquid bag 500 through the liquid filling channel.

[0031] In one embodiment, the liquid capsule 500 corresponds to the front and rear sides of the filter press plate frame 100, and the left frame 107 and the right frame 108 of the filter press plate frame 100 are both provided with a mounting portion 106, and the mounting portion 106 is used to mount the liquid capsule 500, and the mounting portion 106 is in an inverted V shape.

[0032] In one embodiment, a sliding bracket 105 is fixedly provided on the left frame 107 and the right frame 108 of the filter press plate frame 100 , and a support plate 205 extending in the front-to-back direction is provided on the frame 200 , and the sliding bracket 105 can slide along the support plate 205 .

[0033] In one embodiment, the frame 200 includes a front mounting box 201 and a rear mounting box 202 , the hydraulic cylinder is fixedly mounted on the front mounting box 201 , and the liquid inlet pipe 204 and the liquid outlet pipe 203 are fixedly mounted on the rear mounting box 202 .

[0034] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows: The hydraulic cylinder is controlled to extend so that the multiple filter press plates 100 are close to each other, and then water is injected into the liquid filling channel through the control water pipe 300, so that the liquid capsule 500 and the diaphragm are expanded successively, and then the multiple filter press plates 100 are sealed and contacted to form multiple filter press chambers 900, and at the same time, the sludge enters the liquid inlet 103 of the multiple filter press plates 100 through the liquid inlet pipe 204, and then enters each filter press chamber 900 through the liquid inlet 103. The sludge is pressed and filtered in the filter press chamber 900 under the pressure of the liquid capsule 500 and the diaphragm to form a mud cake, and the water separated from the sludge passes through the filter cloth 1000 and enters the inside of the filter press plate frame 100, and then is filtered. The liquid in the hole 102 and the reflux hole 101 flows back to the liquid outlet pipe 203 and flows out through the liquid outlet pipe 203; after the mud cake is dehydrated for a certain period of time, water is pumped into the liquid filling channel by controlling the water pipe 300 to make the liquid capsule 500 and the diaphragm shrink synchronously, and then the filter press plate frame 100 is pulled in sequence by the moving mechanism (the filter plate moving mechanism in the patent document CN116651036B can be used) to slide along the support plate 205, so that the two adjacent filter press plate frames 100 are separated to realize the mud cake unloading operation. Since the bottom of the mud cake is no longer supported by the liquid capsule 500, it falls directly under the action of gravity, thereby improving the unloading efficiency of the mud cake.

[0035] In addition, the present invention provides a deformable liquid capsule 500. After the liquid capsule 500 expands, it realizes the sealing under two adjacent filter press frames 100. After the liquid capsule 500 contracts, the mud cake falls off, so that the mud cake does not contact the sealing structure under the filter press frame 100, thereby ensuring the sealing effect of the side of the filter press frame 100; and when the liquid capsule 500 expands again, the sludge attached to its surface can be bounced off, thereby improving the sludge removal effect.

[0036] In the present invention, since the liquid capsule 500 is arranged at the lower part of the filter press plate frame 100, the water in the liquid capsule 500 is sucked away after the filtration is completed, so that the center of mass of the filter press plate frame 100 is moved upward. In this way, when the mud cake is unloaded, the filter press plate frame 100 slides back and forth along the frame 200, and the lower part of the filter press plate frame 100 is not easy to swing, thereby avoiding the wear of the filter cloth 1000 of the filter press plate frame 100.

[0037] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A sludge dewatering device for water conservancy construction, characterized in that: The invention comprises a frame, one end of which is provided with a hydraulic cylinder, a plurality of filter press plate frames are slidably provided on the frame along the front-back direction, the filter press plate frames are rectangular, the front and rear sides of the filter press plate frames are provided with filter cloths, and the filter cloths are used to filter sludge; the hydraulic cylinder is used to push the plurality of filter press plate frames to contact each other, so that a filter press cavity is formed between two adjacent filter press plate frames, a deformable liquid capsule is provided at the bottom of the filter press plate frame, the liquid capsule is located at the front side or the rear side of the filter press plate frame or corresponds to the front and rear sides at the same time, when the liquid capsule is located at the front side or the rear side of the filter press plate frame A lower frame is provided on the other side of the front and rear of the filter press plate frame, and the lower frame can support the liquid bag; a liquid filling channel is provided inside the filter press plate frame, and the liquid filling channel is used to inject liquid into or suck liquid into the liquid bag, so as to control the expansion or contraction of the liquid bag; after the liquid bag expands, it can form a lower frame on the corresponding side of the filter press plate frame, and after the liquid bag contracts, the mud cake can fall automatically. Diaphragms are provided on the front and rear sides of the filter press plate frame, and a diaphragm cavity is formed between the diaphragm and the filter press plate frame, and the diaphragm cavity is connected with the interior of the liquid bag.

2. The sludge dewatering device for water conservancy construction according to claim 1, characterized in that: The front and rear sides of the filter press plate frame also have a left frame, a right frame and an upper frame. The opposite sides of the left frame and the right frame are each provided with a plurality of filter holes. The upper frame is provided with two reflux holes, and the filter holes are connected to the reflux holes. The frame is provided with two liquid outlet pipes, and the liquid outlet pipes correspond to the reflux holes front and back.

3. The sludge dewatering device for water conservancy construction according to claim 2, characterized in that: A liquid inlet is arranged at the center of the filter press plate frame, and the liquid inlet is communicated with the filter press chamber. A liquid inlet pipe is also arranged on the frame, and the liquid inlet pipe corresponds to the liquid inlet in front and back.

4. The sludge dewatering device for water conservancy construction according to claim 3, characterized in that: The liquid filling channel is located in the lower half of the filter press plate frame, and the liquid filling channel includes a first flow channel and a fourth flow channel arranged in parallel, the first flow channel and the fourth flow channel both extend in the left-right direction, a third flow channel is arranged between the first flow channel and the fourth flow channel, the third flow channel extends in the up-down direction, the lower end of the third flow channel is connected to the interior of the liquid bag, and the left and right ends of the fourth flow channel correspond to the left and right ends of the liquid bag.

5. The sludge dewatering device for water conservancy construction according to claim 4, characterized in that: The first flow channel is provided with a plurality of second flow channels extending in the front-to-back direction, and the second flow channels are connected to the front and rear diaphragm cavities.

6. The sludge dewatering device for water conservancy construction according to claim 5, characterized in that: A control water pipe is provided on one side of the filter press plate frame, and the control water pipe is communicated with the first flow channel.

7. The sludge dewatering device for water conservancy construction according to claim 2, characterized in that: The liquid capsule corresponds to the front and rear sides of the filter press plate frame. The left frame and the right frame of the filter press plate frame are both provided with mounting parts, and the mounting parts are used to mount the liquid capsule, and the mounting parts are in an inverted V shape.

8. The sludge dewatering device for water conservancy construction according to claim 2, characterized in that: The left frame and the right frame of the filter press plate frame are both fixedly provided with sliding brackets, the frame is provided with a support plate extending in the front-rear direction, and the sliding bracket can slide along the support plate.

9. The sludge dewatering device for water conservancy construction according to claim 3, characterized in that: The frame comprises a front mounting box and a rear mounting box, the hydraulic cylinder is fixedly arranged on the front mounting box, and the liquid inlet pipe and the liquid outlet pipe are fixedly arranged on the rear mounting box.

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