Plunger pump pressure stabilizing device for photovoltaic wastewater treatment

Abstract

The utility model relates to a plunger pump pressure stabilizing device for photovoltaic wastewater treatment, and relates to the technical field of wastewater treatment engineering, the plunger pump pressure stabilizing device comprises a pressure stabilizing tank, an air inlet pipeline and an exhaust pipeline, the inlet end of the pressure stabilizing tank is connected with a plunger pump through an input pipeline, the outlet end of the pressure stabilizing tank is provided with an output pipeline, and the air inlet pipeline and the exhaust pipeline are arranged at the top of the pressure stabilizing tank; a diaphragm is arranged in the surge tank, so that the upper part of the surge tank is a gas cavity, the lower part of the surge tank is a liquid cavity, and the inlet end and the outlet end of the surge tank are both arranged in the liquid cavity; a pressure sensor is arranged on the outer wall of the liquid cavity. The pressure of the pressure stabilizing tank is adjusted by conducting air supply and pressure relief operation on the liquid cavity, the liquid outlet pressure of the plunger pump is buffered through the deformable quantity of the diaphragm, the problem that a pulse flow generated by the plunger pump vibrates on a pipeline and equipment is solved, and therefore the pressure is stable.

Description

Technical Field

[0001] The present application relates to the field of wastewater treatment engineering technology, and in particular to a plunger pump pressure stabilizing device for photovoltaic wastewater treatment. Background Art

[0002] The plunger pump is a fluid conveying equipment widely used in the industrial field, especially for sewage sludge containing calcium fluoride and silicon powder particles in the photovoltaic industry. It has the advantages of simple structure, stable performance and long service life. The working principle of the plunger pump is to use the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve material transmission. When the plunger moves backward, the volume in the pump cylinder increases, forming a certain vacuum degree, and the liquid is sucked into the pump cylinder under the action of atmospheric pressure; when the plunger moves forward, the volume in the pump cylinder decreases, and the liquid is compressed and discharged from the pump. By constantly changing the movement direction of the plunger, continuous liquid delivery can be achieved. The plunger pump can be divided into two types: single-acting plunger pump and double-acting plunger pump. The single-acting plunger pump refers to the process of completing the suction and discharge of liquid when the plunger moves in only one direction, while the double-acting plunger pump refers to the process of completing the suction and discharge of liquid when the plunger moves in both directions.

[0003] Since the single-acting plunger pump only moves in one direction to generate flow, the output liquid flow of the single-acting plunger pump is intermittent, which will produce pulse flow; the double-acting plunger pump will also produce pulse flow during the reversing process. Pulse flow will cause unstable pressure in the output pipeline and vibration at the bend of the pipeline, thus affecting the operation of the equipment. Utility Model Content

[0004] The plunger pump pressure stabilizing device for photovoltaic wastewater treatment provided in this application adopts the following technical solution:

[0005] A plunger pump pressure stabilizing device for photovoltaic wastewater treatment, comprising: a pressure stabilizing tank, an air intake pipeline and an exhaust pipeline, wherein the inlet end of the pressure stabilizing tank is connected to the plunger pump through an input pipeline, the outlet end of the pressure stabilizing tank is provided with an output pipeline, the air intake pipeline and the exhaust pipeline are arranged on the top of the pressure stabilizing tank, the air intake pipeline is provided with an air intake valve, the exhaust pipeline is provided with an exhaust valve, a diaphragm is provided inside the pressure stabilizing tank so that the upper part of the pressure stabilizing tank is an air cavity and the lower part is a liquid cavity, the inlet end and the outlet end of the pressure stabilizing tank are both arranged in the liquid cavity; a pressure sensor is provided on the outer wall of the liquid cavity.

[0006] In one embodiment, the air intake pipeline and the exhaust pipeline are arranged vertically.

[0007] In one embodiment, an air filter is provided at the air inlet of the air inlet pipeline.

[0008] In one embodiment, the output pipeline includes a pipeline compensator and a check valve connected in sequence.

[0009] A plunger pump pressure stabilizing device for photovoltaic wastewater treatment provided by an embodiment of the present disclosure can achieve the following technical effects:

[0010] The pressure sensor monitors the pressure of the liquid chamber in real time. When the pressure in the liquid chamber is lower than the lower threshold of 1.2 MPa, the pressure sensor transmits the pressure value to the control module, and the control module sends an opening instruction to the intake valve for air replenishment; when the pressure in the liquid chamber reaches the upper threshold of 1.6 MPa, the pressure sensor transmits the pressure value to the control module, and the control module sends a closing instruction to the intake valve to stop air replenishment; when the pressure in the liquid chamber exceeds the upper threshold of 1.6 MPa, the exhaust valve automatically opens for pressure relief to ensure that the pressure in the liquid chamber is within the threshold range. By operating to replenish and relieve pressure in the liquid chamber to adjust the pressure of the pressure stabilizing tank, and by utilizing the deformable amount of the diaphragm to buffer the liquid outlet pressure of the plunger pump, the vibration problem caused by the pulsating flow generated by the plunger pump to the pipeline and equipment is solved, thereby making the pressure stable.

[0011] The above general description and the following description are only exemplary and explanatory, and are not used to limit this application. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of a plunger pump pressure stabilizing device for photovoltaic wastewater treatment provided by an embodiment of the present application.

[0013] Description of the reference numerals: 1, plunger pump; 2, pressure stabilizing tank; 3, control module; 4, input pipeline; 5, intake pipeline; 6, exhaust pipeline; 7, output pipeline; 8, diaphragm; 9, air chamber; 10, liquid chamber; 11, pressure sensor; 12, pipeline compensator; 13, check valve; 14, intake valve; 15, air filter; 16, exhaust valve. Detailed Embodiments

[0014] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0015] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0016] The following will further elaborate on this application Figure 1 with reference to the accompanying drawings.

[0017] A pressure stabilizing device for a plunger pump used in photovoltaic wastewater treatment, comprising: a pressure stabilizing tank 2, an intake pipeline 5, and an exhaust pipeline 6. The inlet end of the pressure stabilizing tank 2 is connected to the plunger pump 1 through an input pipeline 4. The outlet end of the pressure stabilizing tank 2 is provided with an output pipeline 7. The intake pipeline 5 and the exhaust pipeline 6 are arranged at the top of the pressure stabilizing tank 2. The intake pipeline 5 is provided with an intake valve 14, and the exhaust pipeline 6 is provided with an exhaust valve 16. A diaphragm 8 is arranged inside the pressure stabilizing tank 2, such that the upper part of the pressure stabilizing tank 2 is an air chamber 9 and the lower part is a liquid chamber 10. The inlet end and the outlet end of the pressure stabilizing tank 2 are both arranged in the liquid chamber 10; a pressure sensor 11 is arranged on the outer wall of the liquid chamber 10.

[0018] The pressure sensor 11 monitors the pressure of the liquid chamber 10 in real time. When the pressure in the liquid chamber 10 is lower than the lower threshold of 1.2 MPa, the pressure sensor 11 transmits the pressure value to the control module 3, and the control module 3 sends an opening instruction to the intake valve 14 for air replenishment; when the pressure in the liquid chamber 10 reaches the upper threshold of 1.6 MPa, the pressure sensor 11 transmits the pressure value to the control module 3, and the control module 3 sends a closing instruction to the intake valve 14 to stop air replenishment; when the pressure in the liquid chamber 10 exceeds the upper threshold of 1.6 MPa, the exhaust valve 16 automatically opens for pressure relief to ensure that the pressure in the liquid chamber 10 is within the threshold range. By operating to replenish and relieve the pressure of the liquid chamber 10, the pressure of the pressure stabilizing tank 2 is adjusted, and by utilizing the deformable amount of the diaphragm 8, the liquid output pressure of the plunger pump 1 is buffered, solving the vibration problem caused by the pulsed flow generated by the plunger pump 1 to the pipeline and equipment, thereby making the pressure stable.

[0019] In one embodiment, the intake valve 14 is a solenoid valve and is connected to the control module 3. The exhaust valve 16 is a pressure reducing valve, and the rated pressure of the exhaust valve 16 is the upper pressure threshold. When the pressure exceeds the set upper pressure threshold, it can automatically open for pressure relief.

[0020] In one embodiment, the intake pipeline 5 and the exhaust pipeline 6 are arranged vertically, so as to facilitate the rapid entry or export of gas from the pressure stabilizing tank 2.

[0021] In one embodiment, an air filter 15 is provided at the air inlet of the intake pipeline 5 to filter the air and prevent dirt from entering the air cavity.

[0022] In one embodiment, the output pipeline 7 includes a pipeline compensator 12 and a check valve 13 connected in sequence. The pipeline compensator 12 is used to compensate for the thermal expansion and contraction of the pipeline caused by temperature changes. The check valve 13 is used to block the reverse flow of liquid.

[0023] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A plunger pump pressure stabilizing device for photovoltaic wastewater treatment, characterized in that: include: A pressure-stabilizing tank, an air intake pipeline and an exhaust pipeline, wherein the inlet end of the pressure-stabilizing tank is connected to the plunger pump through an input pipeline, the outlet end of the pressure-stabilizing tank is provided with an output pipeline, the air intake pipeline and the exhaust pipeline are arranged on the top of the pressure-stabilizing tank, the air intake pipeline is provided with an air intake valve, the exhaust pipeline is provided with an exhaust valve, a diaphragm is provided inside the pressure-stabilizing tank so that the upper part of the pressure-stabilizing tank is an air cavity and the lower part is a liquid cavity, the inlet end and the outlet end of the pressure-stabilizing tank are both arranged in the liquid cavity; a pressure sensor is provided on the outer wall of the liquid cavity.

2. The plunger pump voltage stabilizing device for photovoltaic wastewater treatment according to claim 1, characterized in that: The air intake pipeline and the exhaust pipeline are arranged vertically.

3. The plunger pump pressure stabilizing device for photovoltaic wastewater treatment according to claim 1, characterized in that: An air filter is provided at the air inlet of the air inlet pipeline.

4. The plunger pump pressure stabilizing device for photovoltaic wastewater treatment according to claim 1, characterized in that: The output pipeline includes a pipeline compensator and a check valve which are connected in sequence.

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