Novel concentrated liquid back-spraying pressure stabilizing system
By introducing a combination of a return spray intermediate pool and a pressure stabilizing pump into the concentrated liquid return spray system, the problem of unstable concentrated liquid return spray pressure was solved, and stable atomization of the spray gun and safe and reliable operation of the system were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-31
AI Technical Summary
In the concentrated liquid return spray system, the large altitude difference between the concentrated liquid return spray pump and the return spray point of the incinerator and spray tower, coupled with the long pipeline and high resistance, leads to unstable concentrated liquid return spray pressure, affecting the atomization effect of the spray gun. Furthermore, the pump operates under overpressure for a long time, affecting safety and stability.
The system combines first and second concentrated liquid return pumps with a return intermediate tank, and uses first and second return pressure stabilizing pumps for secondary liquid supply to reduce pipeline drop and resistance. The pressure stabilizing pump assembly stabilizes the concentrated liquid pressure, and the liquid supply path is controlled by a bypass pipe and a manual valve, enabling maintenance and troubleshooting without shutting down the system.
It improves the stability of concentrated liquid return pressure, ensures the atomization effect of the spray gun, reduces the frequent start-stop and failure rate of the pump, and improves the safety, reliability and spray stability of the system.
Smart Images
Figure CN224065500U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of concentrated liquid re-spraying technology, and more specifically to a novel concentrated liquid re-spraying pressure stabilization system. Background Technology
[0002] Leachate recirculation is a technology that involves injecting concentrated leachate from treated waste into a specific location for further treatment using a specialized device. Taking landfill leachate recirculation as an example, the leachate is typically stored in a storage device, pumped to a spray nozzle, and then atomized and sprayed into equipment such as a waste incinerator. Under high-temperature conditions, the leachate is rapidly evaporated and decomposed; the organic matter is burned, while the inorganic matter remains as ash or is discharged with the flue gas, thus achieving the harmless treatment of the leachate.
[0003] Currently, the concentrated liquid is directly transported to the incinerator and spray tower by the concentrated liquid return pump for return spraying. Due to the large elevation difference (about 52 meters) between the concentrated liquid return pump and the return point of the incinerator and spray tower, coupled with the long pipeline and high resistance, the pump outlet pressure head loss is large, the concentrated liquid return pressure is unstable, which affects the air-liquid pressure ratio of the spray gun, and thus affects the atomization effect of the spray gun.
[0004] Due to the large elevation difference between the concentrated liquid return pump and the return point of the incinerator and spray tower, coupled with the long pipeline and high resistance, the pump outlet head loss is large. In order to meet the operating requirements of concentrated liquid return pressure and flow, the return pump operates under overpressure for a long time (rated pressure 1.0MPa, actual working pressure 1.2~1.3MPa). The return pump does not operate under its rated operating conditions. Long-term overpressure is not conducive to the safe, stable and long-term operation of the pump. Utility Model Content
[0005] The purpose of this invention is to provide a novel concentrated liquid return spray pressure stabilization system, which can improve the stability of concentrated liquid return spray pressure, ensure the atomization effect of the spray gun, and improve the safety and reliability of the concentrated liquid return spray pump operation. This aims to solve the technical problems mentioned in the background section.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A novel concentrated liquid re-spraying pressure stabilization system includes a landfill leachate tank. The outlet of the landfill leachate tank is connected to the inlet of a first concentrated liquid re-spraying pump and a second concentrated liquid re-spraying pump via a pipeline. The outlets of the first concentrated liquid re-spraying pump and the second concentrated liquid re-spraying pump are connected to a re-spraying intermediate tank via a main pipeline.
[0008] The outlet of the intermediate spray pool is connected to a first spray pressure stabilizing pump and a second spray pressure stabilizing pump via a pipeline. The outlets of the first spray pressure stabilizing pump and the second spray pressure stabilizing pump are connected to a supply pipe. The two ends of the supply pipe are connected to a first spray gun pipe and a second spray gun pipe via connecting pipes. The first spray gun pipe is connected to multiple first spray gun assemblies. The second spray gun pipe is connected to multiple second spray gun assemblies.
[0009] As a further technical solution of this utility model, the landfill leachate tank and the main pipeline are connected by a liquid supply bypass pipe, and an electric valve and a butterfly valve are connected in series on the liquid supply bypass pipe.
[0010] As a further technical solution of this utility model, the main pipe is also connected to the second spray gun pipe, and a first manual valve is connected in series at the end of the main pipe near the second spray gun pipe.
[0011] As a further technical solution of this utility model, the main pipeline is connected to a diversion pipe through a three-way valve, and the diversion pipe is also connected to the first spray gun pipeline, and a second manual valve is connected in series at the end of the diversion pipe near the first spray gun pipeline.
[0012] The intermediate spray pool and the diversion pipe are connected by a straight pipe, and a butterfly valve is connected in series on the straight pipe.
[0013] As a further technical solution of this utility model, the liquid supply pipe is connected to a liquid spraying bypass pipe through a three-way connector; the other end of the liquid spraying bypass pipe is connected to the return spray intermediate pool; an electric valve and a butterfly valve are also connected in series on the liquid spraying bypass pipe.
[0014] As a further technical solution of this utility model, the intermediate pool for back spraying is also connected to a sewage pipe leading to the leachate discharge station, and a butterfly valve is connected in series on the sewage pipe.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. In use, the leachate in the landfill leachate tank is pumped out by a first concentrated liquid return pump or a second concentrated liquid return pump and transported to the return intermediate tank through the main pipeline. The return intermediate tank can be used as a transfer station, and secondary liquid supply is carried out by the first return pressure stabilizing pump and the second return pressure stabilizing pump. The drop difference between the first return pressure stabilizing pump and the second return pressure stabilizing pump and the first spray gun assembly and the second spray gun assembly is small, avoiding the situation of excessive pipeline length and high resistance. The outlet pressure head loss of the first return pressure stabilizing pump and the second return pressure stabilizing pump is reduced, the concentrated liquid return pressure is stable, and the air-liquid pressure ratio of the spray gun is guaranteed, thereby improving the atomization effect of the spray gun.
[0017] 2. In this utility model, when the butterfly valve on the straight pipe is closed and the first manual valve and the second manual valve are opened, liquid can be supplied directly to the first spray gun pipe and the second spray gun pipe through the main pipe; in this way, when the first return spray pressure stabilizing pump and the second return spray pressure stabilizing pump fail, maintenance can be carried out without stopping the machine, ensuring stable liquid spraying of the system and reducing the company's losses. Attached Figure Description
[0018] Figure 1 This is a system block diagram of this utility model.
[0019] In the diagram: 1-Leachate tank, 2-First concentrated liquid return pump, 3-Second concentrated liquid return pump, 4-Main pipeline, 5-Supply bypass pipe, 6-Diverter pipe, 7-First manual valve, 8-Second manual valve, 9-Return spray intermediate tank, 10-First return spray pressure stabilizing pump, 11-Second return spray pressure stabilizing pump, 12-Supply pipe, 13-Spray bypass pipe, 14-Connecting pipe, 15-First spray gun pipeline, 16-First spray gun assembly, 17-Second spray gun pipeline, 18-Second spray gun assembly, 19-Drainage pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1 In this embodiment of the present invention, a novel concentrated liquid re-spraying pressure stabilization system includes a landfill leachate tank 1. The outlet end of the landfill leachate tank 1 is connected to the inlet end of a first concentrated liquid re-spraying pump 2 and a second concentrated liquid re-spraying pump 3 via a pipeline. The outlet ends of the first concentrated liquid re-spraying pump 2 and the second concentrated liquid re-spraying pump 3 are connected to a re-spraying intermediate tank 9 via a main pipeline 4.
[0022] The outlet of the intermediate spray tank 9 is connected to a first spray pressure stabilizing pump 10 and a second spray pressure stabilizing pump 11 via a pipe. The outlets of the first spray pressure stabilizing pump 10 and the second spray pressure stabilizing pump 11 are connected to a supply pipe 12. The two ends of the supply pipe 12 are connected to a first spray gun pipe 15 and a second spray gun pipe 17 via connecting pipes 14. The first spray gun pipe 15 is connected to a plurality of first spray gun assemblies 16. The second spray gun pipe 17 is connected to a plurality of second spray gun assemblies 18.
[0023] By adopting the above technical solution, during use, the leachate in the landfill leachate tank 1 is pumped out by the first concentrated liquid return pump 2 or the second concentrated liquid return pump 3 and transported to the return intermediate tank 9 through the main pipeline 4. The return intermediate tank 9 can serve as a transfer station, using the first return pressure stabilizing pump 10 and the second return pressure stabilizing pump 11 for secondary liquid supply. The drop between the first return pressure stabilizing pump 10 and the second return pressure stabilizing pump 11 and the first spray gun assembly 16 and the second spray gun assembly 18 is small, avoiding the situation of excessively long pipelines and high resistance. The outlet pressure head loss of the first return pressure stabilizing pump 10 and the second return pressure stabilizing pump 11 is reduced, the concentrated liquid return pressure is stable, and the air-liquid pressure ratio of the spray gun is guaranteed, thereby improving the atomization effect of the spray gun.
[0024] In this embodiment, the landfill leachate tank 1 and the main pipeline 4 are connected by a liquid supply bypass pipe 5, and an electric valve and a butterfly valve are also connected in series on the liquid supply bypass pipe 5.
[0025] By adopting the above technical solution, when the leachate in the intermediate spray tank 9 is full, the electric valve and butterfly valve on the supply bypass pipe 5 are opened, and the butterfly valve on the straight pipe is closed, so that the leachate flows back to the landfill leachate tank 1 through the supply bypass pipe 5. This can avoid the situation where the first concentrated liquid return pump 2 and the second concentrated liquid return pump 3 frequently start and stop, which would reduce the service life of the pumps.
[0026] In this embodiment, the main pipe 4 is also connected to the second spray gun pipe 17, and a first manual valve 7 is connected in series at one end of the main pipe 4 near the second spray gun pipe 17.
[0027] More specifically, the main pipe 4 is connected to the diversion pipe 6 via a three-way valve. The diversion pipe 6 is also connected to the first spray gun pipe 15, and a second manual valve 8 is connected in series at the end of the diversion pipe 6 near the first spray gun pipe 15.
[0028] The intermediate spray pool 9 and the diversion pipe 6 are connected by a straight pipe, and a butterfly valve is connected in series on the straight pipe.
[0029] By adopting the above technical solution, the first concentrated liquid return pump 2 and the second concentrated liquid return pump 3 can supply liquid to the return intermediate pool 9; when the butterfly valve on the straight pipe is closed and the first manual valve 7 and the second manual valve 8 are opened, the main pipe 4 can be used to directly supply liquid to the first spray gun pipe 15 and the second spray gun pipe 17.
[0030] In this way, if the first return spray pressure stabilizing pump 10 and the second return spray pressure stabilizing pump 11 fail, maintenance can be carried out without stopping the system, ensuring stable liquid spraying of the system and reducing the company's losses.
[0031] In this embodiment, the liquid supply pipe 12 is connected to the liquid spraying bypass pipe 13 via a three-way connector; the other end of the liquid spraying bypass pipe 13 is connected to the return spray intermediate pool 9; an electric valve and a butterfly valve are also connected in series on the liquid spraying bypass pipe 13.
[0032] By adopting the above technical solution, when the first spray gun assembly 16 or the second spray gun assembly 18 is not required to spray liquid temporarily, the butterfly valve on the supply pipe 12 leading to the second spray gun pipe 17 and the first spray gun pipe 15 can be closed, and the electric valve and butterfly valve on the liquid bypass pipe 13 can be opened, so as to realize the liquid supply backflow of the first return spray pressure stabilizing pump 10 and the second return spray pressure stabilizing pump 11, and avoid the frequent start and stop of the first return spray pressure stabilizing pump 10 and the second return spray pressure stabilizing pump 11.
[0033] In this embodiment, the intermediate spray pool 9 is also connected to a sewage pipe 19 leading to the leachate discharge station, and a butterfly valve is connected in series on the sewage pipe 19.
[0034] After sedimentation, the leachate can be discharged to the sewage station through sewage pipe 19 for further treatment.
[0035] The working principle of this utility model is as follows: When in use, the leachate in the landfill leachate tank 1 is pumped out by the first concentrated liquid return pump 2 or the second concentrated liquid return pump 3, and transported to the return intermediate tank 9 through the main pipeline 4. The return intermediate tank 9 can be used as a transfer station, and secondary liquid supply is carried out by the first return pressure stabilizing pump 10 and the second return pressure stabilizing pump 11. The drop between the first return pressure stabilizing pump 10 and the second return pressure stabilizing pump 11 and the first spray gun assembly 16 and the second spray gun assembly 18 is small, avoiding the situation of excessively long pipelines and high resistance. The outlet pressure head loss of the first return pressure stabilizing pump 10 and the second return pressure stabilizing pump 11 is reduced, the concentrated liquid return pressure is stable, and the air-liquid pressure ratio of the spray gun is guaranteed, thereby improving the atomization effect of the spray gun.
[0036] The first concentrated liquid return pump 2 and the second concentrated liquid return pump 3 can supply liquid to the return intermediate pool 9; when the butterfly valve on the straight pipe is closed and the first manual valve 7 and the second manual valve 8 are opened, the main pipe 4 can be used to directly supply liquid to the first spray gun pipe 15 and the second spray gun pipe 17.
[0037] In this way, if the first return spray pressure stabilizing pump 10 and the second return spray pressure stabilizing pump 11 fail, maintenance can be carried out without stopping the system, ensuring stable liquid spraying of the system and reducing the company's losses.
[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A novel concentrated liquid back spray pressure maintaining system, characterized in that: Including landfill leachate tank (1), the liquid outlet of landfill leachate tank (1) is connected with the liquid inlet of first thick liquid back spray pump (2) and second thick liquid back spray pump (3) through pipeline, then the liquid outlet of first thick liquid back spray pump (2) and second thick liquid back spray pump (3) is connected with back spray intermediate tank (9) through main pipeline (4); The liquid outlet of back spray intermediate tank (9) is connected with first back spray pressure stabilizing pump (10) and second back spray pressure stabilizing pump (11) through pipeline, then the liquid outlet of first back spray pressure stabilizing pump (10) and second back spray pressure stabilizing pump (11) is connected with liquid supply pipe (12) together;The both ends of liquid supply pipe (12) are connected with first spray gun pipeline (15) and second spray gun pipeline (17) through connecting pipe (14) respectively;Wherein first spray gun pipeline (15) is connected with a plurality of first spray gun assemblies (16);Second spray gun pipeline (17) is connected with a plurality of second spray gun assemblies (18).
2. The novel concentrated liquid back spray pressure maintaining system according to claim 1, characterized in that: The liquid supply bypass pipe (5) is connected between landfill leachate tank (1) and main pipeline (4), and an electric valve and a butterfly valve are further connected in series on the liquid supply bypass pipe (5).
3. The novel liquid back spray pressure stabilizing system according to claim 1, characterized in that: The main pipeline (4) is further connected with the second spray gun pipeline (17), and a first hand valve (7) is connected in series on the end of the main pipeline (4) close to the second spray gun pipeline (17).
4. The novel liquid back spray pressure stabilizing system according to claim 1, characterized in that: The main pipeline (4) is connected with a shunt pipe (6) through a three-way valve, then the shunt pipe (6) is further connected with the first spray gun pipeline (15), and a second hand valve (8) is connected in series on the end of the shunt pipe (6) close to the first spray gun pipeline (15). The straight pipe is connected between back spray intermediate tank (9) and shunt pipe (6), then a butterfly valve is connected in series on the straight pipe.
5. The novel liquid back spray pressure maintaining system according to claim 1, characterized in that: The liquid supply pipe (12) is connected with a liquid injection bypass pipe (13) through a three-way joint;The other end of the liquid injection bypass pipe (13) is connected with back spray intermediate tank (9);An electric valve and a butterfly valve are further connected in series on the liquid injection bypass pipe (13).
6. The novel liquid back spray pressure maintaining system according to claim 1, characterized in that: The back spray intermediate tank (9) is further connected with a blowdown pipe (19) leading to a leachate blowdown station, and a butterfly valve is connected in series on the blowdown pipe (19).