Pressurizing pump device for adding water treatment agent

Abstract

The utility model belongs to the technical field of water treatment agent feeding, and provides a pressure pump device for water treatment agent feeding, which comprises two pressure pump units, the pressure pump unit comprises a pump, a pressure gauge and a main pipe; the pump inlet is communicated with the main pipe through a liquid inlet pipe, a third valve is arranged on the liquid inlet pipe, the pump outlet is communicated with a liquid outlet pipe, a fifth valve is arranged on the liquid outlet pipe, the pressure gauge is arranged on the liquid outlet pipe through a pressure detection pipe, and a first valve is arranged on the pressure detection pipe; the pressure pump unit further comprises a back pressure valve and a return pipe, one end of the return pipe is communicated with the main pipe, the other end of the return pipe is communicated with the liquid outlet pipe, the back pressure valve is arranged on the return pipe, and a second valve is arranged on the return pipe. According to the device, the two pressure pump units are arranged for chemical feeding, and the two pressure pump units are standby for each other, so that interruption of chemical feeding can be avoided. By arranging the backflow pipe, when the pressure of the liquid outlet pipe exceeds the set pressure of the back pressure valve, the back pressure valve can be automatically opened, and the medicament in the liquid outlet pipe flows back into the main pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment chemical dosing, and particularly relates to a pressure pump device for water treatment chemical dosing. Background Art

[0002] In various water treatment processes, such as biochemical treatment process, coagulation and sedimentation process, etc., they all involve chemical dosing, dissolution, and the reaction between chemicals and sewage pollutants. The chemical cost accounts for a large proportion of the entire wastewater treatment cost. How to effectively and accurately dose chemicals into water treatment to reduce the water treatment cost has always been a hot spot and a difficult point in the water treatment industry.

[0003] Currently, during the water treatment chemical dosing process, the existing dosing equipment usually adopts a design of using multiple units with one standby. The failure rate is high, and there is a risk of chemical leakage or even the inability to continuously dose chemicals. When the chemical dosing is interrupted, the water treatment is not timely, seriously affecting the safety of the effluent water quality. Summary of the Utility Model

[0004] In view of the deficiencies of the existing technology, the utility model provides a pressure pump device for water treatment chemical dosing. By setting two pressure pump units for chemical dosing, the two pressure pump units are used as backups for each other, which can avoid the interruption of chemical dosing.

[0005] To achieve the above object, the utility model adopts the following technical solutions: A pressure pump device for water treatment chemical dosing, including at least two pressure pump units;

[0006] The pressure pump unit includes a pump, a pressure gauge, and a main pipe;

[0007] The inlet of the pump is communicated with the main pipe through a liquid inlet pipe, a third valve is arranged on the liquid inlet pipe, the outlet of the pump is communicated with a liquid outlet pipe, a fifth valve is arranged on the liquid outlet pipe, the pressure gauge is arranged on the liquid outlet pipe through a pressure detection pipe, and a first valve is arranged on the pressure detection pipe;

[0008] The pressure pump unit further includes a back pressure valve and a return pipe. One end of the return pipe is communicated with the main pipe, the other end of the return pipe is communicated with the liquid outlet pipe, the back pressure valve is arranged on the return pipe, and a second valve is arranged on the return pipe.

[0009] Preferably, the pressure pump unit further includes an exhaust valve and an exhaust branch pipe. One end of the exhaust branch pipe is communicated with the liquid outlet pipe, the other end of the exhaust branch pipe is vented, and the exhaust valve is arranged on the exhaust branch pipe.

[0010] Preferably, the device further includes an exhaust main pipe. The venting ends of the exhaust branch pipes of the two pressure pump units are both communicated with the exhaust main pipe, and a sixth valve is arranged at the end of the exhaust main pipe.

[0011] Preferably, the pressure pump unit further includes a flushing pipe, one end of the flushing pipe is communicated with the liquid inlet pipe between the third valve and the pump, the other end of the flushing pipe is communicated with a water supply pipe, and a fourth valve is provided on the flushing pipe.

[0012] Preferably, the main pipes of the two pressure pump units are communicated.

[0013] Preferably, the device further includes a bracket, and the pressure pump unit is installed on the bracket.

[0014] Preferably, a support plate is installed on the bracket.

[0015] Preferably, the pump is a magnetic pump.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. The pressure pump device for water treatment chemical dosing provided by the present utility model uses two pressure pump units for chemical dosing, and the two pressure pump units are backup to each other. When the pump needs to be repaired, another pressure pump unit can be turned on to avoid interruption of chemical dosing. By setting a reflux pipe, when the pressure in the liquid outlet pipe exceeds the set pressure of the back pressure valve, the back pressure valve can be automatically opened, and the chemical in the liquid outlet pipe flows back into the main pipe, thereby reducing the pressure in the liquid outlet pipe.

[0018] 2. The pressure pump device for water treatment chemical dosing provided by the present utility model can flush the pump and the pipeline by opening the flushing pipe. Description of the Drawings

[0019] Figure 1 is a three-dimensional structure diagram of the pressure pump device for water treatment chemical dosing provided by an embodiment of the present utility model;

[0020] Figure 2 is a partial three-dimensional structure diagram of the pressure pump device for water treatment chemical dosing provided by an embodiment of the present utility model;

[0021] Figure 3 is a three-dimensional structure diagram of the pressure pump unit of the pressure pump device for water treatment chemical dosing provided by an embodiment of the present utility model;

[0022] Figure 4 is a pipeline diagram of the pressure pump device for water treatment chemical dosing provided by an embodiment of the present utility model for normal dosing;

[0023] Figure 5 is a pipeline diagram of the pressure pump device for water treatment chemical dosing provided by an embodiment of the present utility model for flushing.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. First valve; 2. Second valve; 3. Third valve; 4. Fourth valve; 5. Fifth valve; 6. Sixth valve; 7. Pump; 8. Back pressure valve; 9. Exhaust valve; 10. Pressure gauge; 11. Main pipe; 12. Liquid inlet pipe; 13. Liquid outlet pipe; 14. Pressure detection pipe; 15. Return pipe; 16. Exhaust branch pipe; 17. Exhaust main pipe; 18. Flushing pipe; 19. Bracket. Detailed implementation manners

[0026] The following further elaborates on the present utility model in conjunction with specific embodiments, so that those skilled in the art can more clearly understand the present utility model.

[0027] It should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For those of ordinary skill in the art, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] As Figure 1-2 shown, this embodiment provides a pressurized pump device for water treatment chemical dosing, including at least two pressurized pump units.

[0030] As Figure 3 shown, the pressurized pump unit includes a pump 7, a pressure gauge 10, and a main pipe 11.

[0031] The main pipe 11 is used to supply the chemical. The main pipes 11 of the two pressurized pump units are connected. The inlet of the pump 7 is connected to the main pipe 11 through a liquid inlet pipe 12, and a third valve 3 is provided on the liquid inlet pipe 12. The outlet of the pump 7 is connected to a liquid outlet pipe 13, and a fifth valve 5 is provided on the liquid outlet pipe 13. The pressure gauge 10 is arranged on the liquid outlet pipe 13 through a pressure detection pipe 14. Specifically, one end of the pressure detection pipe 14 is connected to the detection end of the pressure gauge 10, and the other end of the pressure detection pipe 14 is connected to the liquid outlet pipe 13 between the fifth valve 5 and the pump 7. A first valve 1 is provided on the pressure detection pipe 14, and the pressure detection of the pressure gauge 10 can be turned on or off through the first valve 1.

[0032] Among them, the pump 7 can be a magnetic pump. Through the main pipe 11, the liquid inlet pipe 12, and the liquid outlet pipe 13, the transportation of the chemical can be realized, and the pump 7 can provide a constant pressure to achieve stable dosing of the chemical. The pressure gauge 10 can detect the pressure in the liquid outlet pipe 13 in real time.

[0033] The pressure pump unit further includes a back pressure valve 8 and a return pipe 15. One end of the return pipe 15 is communicated with the main pipe 11, and the other end of the return pipe 15 is communicated with the liquid outlet pipe 13. The back pressure valve 8 is arranged on the return pipe 15, and the inlet of the back pressure valve 8 faces the liquid outlet pipe 13. A second valve 2 is arranged on the return pipe 15. When the pressure in the liquid outlet pipe 13 is greater than the set pressure of the back pressure valve 8, the back pressure valve 8 will automatically open, so that the chemical agent in the liquid outlet pipe 13 can flow back into the main pipe 11 through the return pipe 15.

[0034] Based on the above structure, for the pressure pump device provided in this embodiment, two pressure pump units are arranged for chemical agent dosing, and the two pressure pump units are backup for each other. When the pump 7 needs to be repaired, another pressure pump unit can be started to avoid interruption of chemical agent dosing. By arranging the return pipe 15, when the pressure in the liquid outlet pipe 13 exceeds the set pressure of the back pressure valve 8, the back pressure valve 8 can be automatically opened, and the chemical agent in the liquid outlet pipe 13 flows back into the main pipe 11, so that automatic pressure control of the liquid outlet pipe 13 can be realized.

[0035] In this embodiment, as Figure 3 shown, the pressure pump unit further includes an exhaust valve 9 and an exhaust branch pipe 16. One end of the exhaust branch pipe 16 is communicated with the liquid outlet pipe 13, and the other end of the exhaust branch pipe 16 is vented. The exhaust valve 9 is arranged on the exhaust branch pipe 16. The exhaust valve 9 can allow the gas in the liquid outlet pipe 13 to pass through and be discharged from the exhaust branch pipe 16, which can improve the operation stability of the pressure pump unit.

[0036] The pressure pump device provided in this embodiment further includes an exhaust main pipe 17. The vented ends of the exhaust branch pipes 16 of the two pressure pump units are both communicated with the exhaust main pipe 17, and a sixth valve 6 is arranged at the end of the exhaust main pipe 17. The exhaust main pipe 17 can be opened or closed through the sixth valve 6, and further the opening or closing of the exhaust branch pipe 16 can be controlled.

[0037] As Figure 3 and 5 shown, in this embodiment, the pressure pump unit further includes a flushing pipe 18. One end of the flushing pipe 18 is communicated with the liquid inlet pipe 12 between the third valve 3 and the pump 7, the other end of the flushing pipe 18 is communicated with a water supply pipe, and a fourth valve 4 is arranged on the flushing pipe 18.

[0038] The water supply pipe is used to supply tap water. When flushing is required, by opening the flushing pipe 18, the tap water in the water supply pipe can enter the liquid inlet pipe 12 through the flushing pipe 18, then enter the pump 7, and finally be discharged from the liquid outlet pipe 13, so that the pump and part of the pipeline can be flushed with water.

[0039] The pressure pump device provided in this embodiment further includes a bracket 19, and the pressure pump unit is installed on the bracket 19. A support plate is installed on the bracket 19. The support plate can also play a supporting role, and part of the pipeline can be fixedly installed on the support plate.

[0040] In summary, when the pressure pump device provided in this embodiment is normally dosing, as Figure 3 、 4 shown, open the first valve 1, the second valve 2, the third valve 3, the fifth valve 5, and the sixth valve 6, and close other valves. The chemical agent enters the liquid inlet pipe 12 from the main pipe 11, and then is pressurized and pumped to the liquid outlet pipe 13 by the pump 7 and enters the subsequent process. The pump 7 can provide a constant pressure to achieve stable dosing of the chemical agent. The back pressure valve 8 can achieve automatic pressure control of the liquid outlet pipe 13. The exhaust branch pipe 16 can discharge the gas in the liquid outlet pipe 13 and improve the operating stability of the pressure pump unit.

[0041] When flushing is required, as Figure 3 、 5 shown, open the fourth valve 4 and the fifth valve 5, and close other valves. Tap water first enters the flushing pipe 18, then enters the liquid inlet pipe 12, then enters the pump 7, and finally enters the liquid outlet pipe 13 and is discharged. Thus, the pump 7 and part of the pipeline can be flushed.

[0042] In this embodiment, all valves can be ball valves.

[0043] It should be noted that the pressure pump device provided in this embodiment further includes the following matters:

[0044] a. It is prohibited to start the pump when it rotates reversely;

[0045] b. It is prohibited to start the pump when the outlet pipeline is fully closed. If it has been started, it is prohibited for more than 1 minute;

[0046] c. It is prohibited to let the pump run idly;

[0047] d. It is prohibited to let the medium be evacuated;

[0048] e. It is prohibited to start the pump without exhausting the gas;

[0049] f. It is prohibited to let the pump work under cavitation conditions;

[0050] g. It is prohibited to let the pump run for a long time when the flow rate is insufficient or too large;

[0051] h. It is prohibited for the pump to be subjected to thermal shock;

[0052] i. It is prohibited for the pump to start and stop more than 6 times in 1 hour;

[0053] j. It is prohibited that the pump pressure exceeds 0.33 MPa.

[0054] For the pressurized pump device provided in this embodiment, the following regular matters also need to be carried out.

[0055] A. Regularly check and clean the Y-type filter to ensure the smooth inlet of the pump; (According to the amount of pharmaceutical impurities on-site, it is necessary to regularly clean the Y-type filter) After cleaning, the air in the pipeline must be exhausted before starting the pump.

[0056] B. Conduct regular on-site inspections, and pay attention to whether the sound and vibration of the pump are normal. Observe whether the readings of instruments such as ammeters, voltmeters, pressure gauges, and flow meters are normal. Pay attention to whether there is air leakage, liquid leakage, etc. in the pipeline.

[0057] C. Start the standby pump regularly once to ensure that the standby pump is in good condition. If the standby pump does not run for a long time, it is recommended to start it once every 3 days.

[0058] The mechanisms, components, and parts not described in detail in the specific structure of this utility model are existing structures that already exist in the prior art and can be directly purchased from the market.

[0059] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to this utility model. In addition, "first" and "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, the meaning of "plural" is two or more.

[0060] The above is only the preferred implementation of this utility model and is not used to limit the protection scope of this utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this utility model shall be included within the protection scope of this utility model.

Claims

1. A pressure pump device for adding water treatment chemicals, characterized in that: comprising at least two booster pump units; The booster pump unit comprises a pump (7), a pressure gauge (10), and a main pipe (11); The inlet of the pump (7) is connected to the main pipe (11) through a liquid inlet pipe (12), the liquid inlet pipe (12) is provided with a third valve (3), the outlet of the pump (7) is connected to a liquid outlet pipe (13), the liquid outlet pipe (13) is provided with a fifth valve (5), the pressure gauge (10) is arranged on the liquid outlet pipe (13) through a pressure detection pipe (14), the pressure detection pipe (14) is provided with a first valve (1); The booster pump unit further comprises a back pressure valve (8) and a return pipe (15), one end of the return pipe (15) being connected to the main pipe (11), and the other end of the return pipe (15) being connected to the liquid outlet pipe (13), the back pressure valve (8) being arranged on the return pipe (15), and the return pipe (15) being provided with a second valve (2).

2. The booster pump device for adding water treatment chemicals according to claim 1, characterized in that: The booster pump unit further comprises an exhaust valve (9) and an exhaust branch pipe (16). One end of the exhaust branch pipe (16) is connected to the liquid outlet pipe (13), and the other end of the exhaust branch pipe (16) is vented. The exhaust valve (9) is arranged on the exhaust branch pipe (16).

3. The booster pump device for adding water treatment chemicals according to claim 2, characterized in that: The device also includes an exhaust main pipe (17), the exhaust branch pipes (16) of the two booster pump units are both connected to the exhaust main pipe (17) at the vent ends, and a sixth valve (6) is provided at the end of the exhaust main pipe (17).

4. The booster pump device for adding water treatment chemicals according to claim 1, characterized in that: The booster pump unit further comprises a flushing pipe (18), one end of which is connected to the liquid inlet pipe (12) between the third valve (3) and the pump (7), and the other end of which is connected to the water supply pipe. A fourth valve (4) is provided on the flushing pipe (18).

5. The booster pump device for adding water treatment chemicals according to claim 1, characterized in that: The main pipes (11) of the two booster pump units are connected.

6. The booster pump device for adding water treatment chemicals according to claim 1, characterized in that: The device further comprises a bracket (19), and the booster pump unit is mounted on the bracket (19).

7. The booster pump device for adding water treatment chemicals according to claim 6, characterized in that: A support plate is installed on the bracket (19).

8. The booster pump device for adding water treatment chemicals according to claim 1, characterized in that: The pump (7) is a magnetic pump.

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