Spiral conveying and drying integrated device for vacuum conveying of grid slag
By designing a spiral conveying and drying integrated device in the sewage treatment plant, combining the conveying spiral and drying functions, the gate slag in the sewage treatment plant is heated and dried, which solves the problems of conveying instability and pipeline blockage caused by the high moisture content of the gate slag, and achieves a more efficient and safe transportation process.
Patent Information
- Application Number
- CN202421946724.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The existing sewage treatment plants have problems such as high moisture content during the slag transport process, resulting in plate bonding and blocking of pipelines, and the transportation is unstable, which increases maintenance costs and environmental pollution.
An integrated spiral conveying and drying device for vacuum conveying of gate slag is designed. Combined with the conveying spiral and drying functions, a heat source is provided through a high-pressure hot air fan, and the gate slag is heated and dried to reduce moisture content, and a guide plate is installed at the feed port to avoid blind spots.
It effectively reduces the moisture content of the gate slag, avoids pipeline blockage, improves the stability and safety of transportation, reduces maintenance costs, and improves environmental quality.
Smart Images
Figure CN222876906U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, and more specifically to a spiral conveying and drying integrated device for vacuum conveying of screen residue. Background Art
[0002] In the daily operation of sewage treatment plants, coarse, medium and fine screens are generally set up in the pre-treatment stage to remove various floating and suspended matter in sewage, which are called screens. If not handled properly, screens will cause trouble and impact on the subsequent treatment process. Therefore, effective screens collection and treatment is very important.
[0003] At present, the collection and transportation of screen residue is generally carried out by belt conveyors or screw conveyors to the press and then sent to the trash can, and then collected by manual pushing and transported out for treatment. This method will cause a poor environment in the processing workshop and is time-consuming and labor-intensive.
[0004] Therefore, in order to ensure the environment of the screen slag collection and transportation workshop and solve the time-consuming and labor-intensive problem of manual transportation, the pretreatment area of the sewage plant was deeply analyzed and studied. Finally, the original open sewage pretreatment area on the ground was transferred to an underground sealed space, and the screen slag and sand and other garbage in various places were transported to the ground layer through a pipeline-type closed transport using the vacuum adsorption principle. The above-ground part can be transformed into a garden-style landscape, and the transformation of the pretreatment ultra-clean space of the sewage plant was completed on this basis. However, there are the following shortcomings in the process of using pipelines to transport screen slag: (1) The screen slag has a high moisture content and is easy to harden and block the pipeline; (2) When the screen slag enters the feed port of the conveying screw, it is easy to accumulate and form a dead corner; (3) The screen slag is easy to agglomerate in the conveying screw, causing the screw to jam. Utility Model Content
[0005] In view of the above-mentioned defects existing in the prior art, the purpose of the utility model is to provide an integrated spiral conveying and drying device for vacuum conveying of screen residue, which combines the conveying spiral with drying, effectively reduces the moisture content of the screen residue while ensuring the conveying function, and provides a guide plate to avoid the formation of dead corners in the conveying spiral feed port, thereby realizing smooth and reliable conveying of the screen residue.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model provides a screw conveying and drying integrated device for vacuum conveying of screens, comprising a conveying screw and a heating device connected to the conveying screw;
[0008] The feed end of the conveying screw is provided with a feed port, and the discharge end of the conveying screw is provided with a discharge port; the feed port and the discharge port are respectively provided with hot air inlets connected to the heat source device; the feed port is provided with a guide plate for allowing the screen residue to fall onto the spiral blade;
[0009] The heating device includes a blower for generating high-pressure air and a high-pressure hot air blower for heating the high-pressure air. The blower is connected to the high-pressure hot air blower, and the air outlet of the high-pressure hot air blower is respectively connected to the hot air inlet of the feed port and the discharge port of the conveying screw.
[0010] Preferably, the conveying screw includes a driving device, a spiral screw connected to the driving device, and a spiral blade arranged on the spiral screw; the driving device is arranged near the discharge end; and a serrated notch is opened on the spiral blade corresponding to the feed port position.
[0011] Preferably, the hot air inlet at the feed port is arranged at an inner side of the guide plate.
[0012] Preferably, two feed ports are provided on the feed end.
[0013] Preferably, the high-pressure hot air blower is respectively connected to the hot air inlets of the feed port and the discharge port of the conveying screw through a high-temperature resistant hose.
[0014] Preferably, the feed end of the conveying screw is fixed by a screw bracket, the feed port of the feed end is connected to the grid press through a conveying pipe, and the discharge port of the discharge end of the conveying screw is arranged above the feed port of the crusher.
[0015] The utility model provides a screw conveying and drying integrated device for vacuum conveying of screenings, which specifically has the following advantages:
[0016] 1. The screw conveying and drying integrated device for vacuum conveying of screens of the utility model can effectively remove the moisture content in the screens while ensuring the smooth conveying of the screens, thus laying a foundation for the centralized conveying of the subsequent screens and sedimentation;
[0017] 2. The screw conveying and drying integrated device for vacuum conveying of screens of the utility model fundamentally solves the problem of pipe blockage caused by high moisture content of screens during conveying, which is easy to harden;
[0018] 3. The screw conveying and drying integrated device for vacuum conveying of screens of the utility model reduces maintenance costs, improves equipment safety and stability, improves automatic operation capabilities, and solves the problem that screens easily clog pipelines;
[0019] 4. The utility model discloses a spiral conveying and drying integrated device for vacuum conveying of screen residue. The feed port and the discharge port of the conveying spiral are both provided with hot air inlets, and are connected to the outlet pipe of the high-pressure hot air blower through a high-temperature resistant hose. The high-pressure hot air blower and the blower provide a heat source for it, ensuring that the screen residue is in a heated and dried state during the entire spiral conveying process, effectively removing moisture from the screen residue, and providing technical guarantee for subsequent vacuum pipeline transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of a screw conveying and drying integrated device for vacuum conveying of screens of the utility model;
[0021] Figure 2 It is a side view of the screw conveying and drying integrated device for vacuum conveying of screenings of the utility model;
[0022] Figure 3 It is a top view of the screw conveying and drying integrated device for vacuum conveying of screenings of the utility model;
[0023] Figure 4 It is a layout diagram of the guide plate of the conveying spiral feed port of the utility model;
[0024] Figure 5 It is a structural schematic diagram of the sawtooth notch on the spiral blade of the utility model;
[0025] Among them, 10, conveying screw; 11, driving device; 12, spiral screw; 13, spiral blade; 131, serrated notch; 14, feed port; 15, discharge port; 16, hot air inlet; 17, guide plate; 18, blower; 19, high-pressure hot air blower; 20, high-temperature resistant hose; 21, conveying pipeline; 22, spiral bracket. DETAILED DESCRIPTION
[0026] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0027] In order to ensure the workshop environment for collecting and conveying screens and to solve the problem of time-consuming and labor-intensive manual transportation, the pretreatment area of the sewage plant was deeply analyzed and studied. Finally, the original open sewage pretreatment area on the ground was transferred to an underground sealed space, and the vacuum adsorption principle was used to transport screens, grit and other garbage from various places to the ground layer through a closed pipeline for transportation. Various treatment equipment was installed in the underground sealed space, and the above-ground part could be transformed into a garden-style landscape, thereby reducing environmental pollution during sewage treatment, effectively improving the plant environment of the sewage plant, and improving the air quality in the plant area. On this basis, the transformation of the ultra-clean space of the sewage plant pretreatment was completed.
[0028] The utility model is one of the important technologies in the reconstruction plan of the ultra-clean space of the sewage treatment plant. During the spiral conveying process of the screen residue, the screen residue is heated and dried to reduce the moisture content of the screen residue, thereby fundamentally solving the problem of pipeline blockage caused by the high moisture content of the screen residue and easy compaction. The utility model provides a spiral conveying and drying integrated device for vacuum conveying of the screen residue, which can effectively reduce the moisture content of the screen residue while ensuring the conveying of the screen residue, laying a foundation for subsequent centralized conveying.
[0029] Combination Figure 1 As shown, the utility model provides an integrated spiral conveying and drying device for vacuum conveying of screen residue, comprising a conveying screw 10 and a heating device connected to the conveying screw 10, which combines conveying and drying, heats and dries the screen residue in the conveying screw 10, and effectively removes moisture from the screen residue while ensuring the conveying function.
[0030] Combination Figure 1 , Figure 2 As shown, the feeding end of the conveying screw 10 is provided with a feeding port 14, and the discharging end of the conveying screw 10 is provided with a discharging port 15; the feeding port 14 and the discharging port 15 are respectively provided with a hot air inlet 16 connected to the heat source device; Figure 4 As shown, a guide plate 17 is provided at the feed port 14 to allow the screen residue to fall onto the spiral blade 13, which can ensure that the screen residue enters the conveying screw 10 from the press conveying pipe 21 and directly falls onto the spiral blade 13, thereby ensuring the smooth conveyance of the screen residue and avoiding the formation of a dead angle at the feed port 14, which would cause the screen residue to accumulate and clog at the feed port 14.
[0031] Combination Figure 2 As shown, the conveying screw 10 is provided with a driving device 11, a spiral screw 12 connected to the driving device 11, and a spiral blade 13 arranged on the spiral screw 12; the driving device 11 is arranged near the discharge end. Figure 5 As shown, a serrated notch 131 is provided on the spiral blade 13 corresponding to the position of the feed port 14. After the screen residue enters the conveying screw 10, it can be torn into pieces to form a smaller volume, so as to ensure that the screen residue can be heated evenly and the drying effect is guaranteed.
[0032] Combination Figure 1 As shown, the hot air inlet 16 at the feed port 14 is arranged at the inner side of the guide plate 17 , so as to heat and dry the screen residue from the feed port 14 .
[0033] Combination Figure 1 , Figure 3 As shown, two feed ports 14 are arranged on both sides of the feed end, and when conveying coarse screen residue, the feed end can be connected to two screen presses. The discharge port 15 arranged at the discharge end is vertical to the conveying screw, and the opening is arranged downward.
[0034] Combination Figure 2 As shown, the feed end of the conveying screw 10 is fixed by a screw bracket 22, the feed port 14 of the feed end is connected to the grid press through a conveying pipe 21, and the discharge port 15 of the discharge end of the conveying screw 10 is arranged above the feed port 14 of the crusher.
[0035] Combination Figure 1 , Figure 2 As shown, the heating device includes a blower 18 for generating high-pressure air and a high-pressure hot air blower 19 for heating the high-pressure air. The blower 18 is connected to the high-pressure hot air blower 19, and the air outlet of the high-pressure hot air blower 19 is respectively connected to the hot air inlet 16 of the feed port 14 and the discharge port 15. The high-pressure hot air blower 19 is respectively connected to the hot air inlet 16 of the feed port 14 and the discharge port 15 through a high-temperature resistant hose 20. In the heating device, the blower 18 generates high-pressure air and sends it into the high-pressure hot air blower 19. The high-pressure hot air blower 19 heats the air to a corresponding temperature (depending on the actual situation). After that, the high-pressure hot air is sent to the conveying screw 10 by the high-temperature resistant hose 20 to heat and dry the screen residue entering the conveying screw 10 from the press conveying pipe 21.
[0036] Combination Figure 1 As shown, the conveying and drying process of the screw conveying and drying integrated device for vacuum conveying of screen residue of the utility model is as follows: the screen residue coming out of the screen press falls into the feed port 14 of the conveying screw 10 through the conveying pipe 21, and falls above the spiral under the action of the guide plate 17, and the serrated notches 131 on the spiral blades 13 make the screen residue form a smaller volume; at the same time, the high-pressure air generated by the blower 18 is heated to the corresponding temperature by the high-pressure hot air blower 19, and is conveyed to the hot air inlet 16 corresponding to the conveying screw 10 through the high-temperature resistant hose 20, so that the screen residue is continuously heated and dried. After the specified time is reached, the spiral conveyor starts to run, and the screen residue that meets the moisture content requirement is conveyed to the crusher for crushing, and then sent to the buffer tank through the secondary conveying screw 10, and finally extracted through the vacuum pipe.
[0037] To sum up, the integrated spiral conveying and drying device for vacuum conveying of screen residue of the utility model, as one of the important technologies in the reconstruction plan of the ultra-clean space of sewage treatment plant pretreatment, can ensure that the screen residue is in a heated and dried state during the entire spiral conveying process, effectively remove the moisture content in the screen residue, and at the same time reduce maintenance costs, improve equipment safety and stability, improve automatic operation capabilities, and solve the problem that screen residue easily blocks pipelines; it provides technical guarantee for subsequent vacuum pipeline transportation.
[0038] The renovation of the pre-treatment ultra-clean space of a sewage plant is a major engineering project in Shanghai and is also the first application in the pre-treatment area of a sewage plant. As one of the important technologies in the renovation plan of the pre-treatment ultra-clean space of a sewage plant, the utility model further improves the renovation plan of the pre-treatment ultra-clean space of a sewage plant, combines the conveying screw with drying, and effectively reduces the moisture content of the screen residue while ensuring the conveying function. A guide plate is provided to avoid the screen residue from forming a dead angle at the conveying screw feed port, thereby achieving smooth and reliable conveying of the screen residue.
[0039] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.
Claims
1. A screw conveying and drying integrated device for vacuum conveying of screenings, characterized in that: It includes a conveying screw and a heating device connected to the conveying screw; The feed end of the conveying screw is provided with a feed port, and the discharge end of the conveying screw is provided with a discharge port; the feed port and the discharge port are respectively provided with hot air inlets connected to the heat source device; the feed port is provided with a guide plate for allowing the screen residue to fall onto the spiral blade; The heating device comprises a blower for generating high-pressure air and a high-pressure hot air blower for heating the high-pressure air, the blower is connected to the high-pressure hot air blower, and the air outlet of the high-pressure hot air blower is respectively connected to the hot air inlet of the feed port and the discharge port.
2. The integrated spiral conveying and drying device for vacuum conveying of screenings according to claim 1, characterized in that: The conveying screw includes a driving device, a spiral screw connected to the driving device, and a spiral blade arranged on the spiral screw; the driving device is arranged near the discharge end; and a serrated notch is opened on the spiral blade corresponding to the feed port position.
3. The integrated spiral conveying and drying device for vacuum conveying of screenings according to claim 1, characterized in that: The hot air inlet at the feed port is arranged at a position inside the guide plate.
4. The integrated spiral conveying and drying device for vacuum conveying of screenings according to claim 1, characterized in that: The feed end is provided with two feed ports.
5. The integrated spiral conveying and drying device for vacuum conveying of screenings according to claim 1, characterized in that: The high-pressure hot air blower is respectively connected to the hot air inlet of the feed port and the discharge port of the conveying screw through a high-temperature resistant hose.
6. The integrated spiral conveying and drying device for vacuum conveying of screenings according to claim 1, characterized in that: The feed end of the conveying screw is fixed by a screw bracket, the feed port of the feed end is connected to the grid press through a conveying pipeline, and the discharge port of the discharge end of the conveying screw is arranged above the feed port of the crusher.