Crude brine booster pump inlet filter with backwashing structure

Abstract

The utility model discloses a coarse brine pressure pump inlet filter with a backwashing structure, which comprises a filter shell arranged at an inlet of a coarse brine pressure pump, the filter shell is communicated with a backwashing pipe, a filter screen is arranged between a filter screen bottom plate of the filter shell and a filter screen compression ring, and the filter screen is communicated with the backwashing pipe. And the filter screen bottom plate, the filter screen and the filter screen pressing ring are fixed through a plurality of fastening bolts. The filter is simple in structure and easy to disassemble, has a backwashing function, can realize online backwashing, and is convenient to clean and the filter screen is convenient to replace.

Description

Technical Field

[0001] The utility model relates to a field, in particular to an inlet filter of a coarse salt water pressure pump with a backwashing structure. Background Art

[0002] Pump filters are generally used at the suction port of a booster pump to filter the suction medium and prevent debris from entering the pump body and damaging the pump components. Debris clogs the inlet filter screen, which can easily lead to insufficient inlet suction and cause pump cavitation. Therefore, the pump inlet filter needs to be cleaned regularly to clean the internal filter screen.

[0003] The suction port of the crude brine pump in the chlor-alkali process generally needs to be inserted below the crude brine liquid surface. Manual cleaning of the filter is difficult and the crude brine pump needs to run for a long period of time. If the filter is cleaned manually, the pump needs to be shut down, and the filter is easily damaged due to long-term scouring and salt water corrosion.

[0004] Therefore, it is necessary to develop a new type of crude brine booster pump inlet filter with backwash function for easy cleaning. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a crude brine booster pump inlet filter with a backwash structure, which has a simple structure and is easy to disassemble, has a backwash function, can be backwashed online, is easy to clean, and is easy to replace the filter.

[0006] Technical solution: The utility model is a crude brine booster pump inlet filter with a backwash structure, which is characterized by comprising a filter housing arranged at the inlet of the crude brine booster pump, the filter housing being connected to a backwash pipe, a filter being arranged between a filter bottom plate and a filter pressure ring of the filter housing, and the filter bottom plate, the filter and the filter pressure ring being fixed by a plurality of fastening bolts.

[0007] Wherein, the backwash pipe is led out from the outlet pipeline of the pressure pump.

[0008] Wherein, the outer ring of the filter bottom plate is provided with a groove, and the filter bottom plate is fixedly connected to the filter housing.

[0009] Wherein, the filter screen pressing ring is an annular pressing plate, and bolt holes are provided on the filter screen pressing ring and the filter screen bottom plate correspondingly.

[0010] Wherein, the fastening bolt is movably connected to the nut.

[0011] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model can realize online backwashing of the filter screen, ensure the continuous and stable operation of the crude brine booster pump, and avoid frequent manual cleaning of the filter screen. It solves the problem of difficulty in disassembling the filter screen and replacing many parts. After the improvement, only the damaged filter screen needs to be replaced. The utility model has a simple structure and is easy to disassemble. It has a backwashing function and can be backwashed online, which is easy to clean and replace the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the filter screen of the utility model;

[0014] In the figure, 1 is the filter housing, 2 is the backwash pipe, 3 is the filter bottom plate, 4 is the filter, 5 is the filter pressure ring, 6 is the nut, and 7 is the fastening bolt. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0016] The crude brine booster pump inlet filter with a backwashing structure of the utility model comprises a filter housing 1 arranged at the inlet of the crude brine booster pump, the filter housing 1 is connected to the backwashing pipe 2, a filter 4 is arranged between the filter bottom plate 3 and the filter pressing ring 5 of the filter housing 1, and the filter bottom plate 3, the filter 4 and the filter pressing ring 5 are fixed by a plurality of fastening bolts 7. Among them, the backwashing pipe 2 is led out from the outlet pipeline of the booster pump. The outer ring of the filter bottom plate 3 is beveled, and the filter bottom plate 3 is fixedly connected to the filter housing 1. The filter pressing ring 5 is an annular pressure plate, and bolt holes are provided in the filter pressing ring 5 and the filter bottom plate 3 respectively. The fastening bolts 7 are movably connected with the nuts 6.

[0017] When in use, the filter screen 4 is installed between the filter screen bottom plate 3 and the filter screen pressure ring 5, and is fixed by multiple fastening bolts 7. The backwash pipe 2 is introduced into the filter, and the backwash pipe 2 is led out from the pump outlet pipeline. The valve on the backwash pipe 2 can be opened regularly to backwash the debris attached to the outer surface of the filter screen. The filter and the pump inlet pipeline can be connected by welding or flange.

[0018] The utility model can realize online backwashing of the filter screen, ensure the continuous and stable operation of the crude brine booster pump, and avoid frequent manual cleaning of the filter screen. It solves the problem of difficulty in disassembling the filter screen and replacing many parts. After the improvement, only the damaged filter screen needs to be replaced. The utility model has a simple structure and is easy to disassemble. It has a backwashing function and can be backwashed online, which is convenient for cleaning and replacing the filter screen.

Claims

1. A crude brine pressure pump inlet filter with a backwashing structure, characterized in that: The invention comprises a filter housing (1) arranged at the inlet of a crude salt water booster pump, the filter housing (1) being connected to a backwash pipe (2), a filter screen (4) being arranged between a filter screen bottom plate (3) and a filter screen pressing ring (5) of the filter housing (1), and the filter screen bottom plate (3), the filter screen (4) and the filter screen pressing ring (5) being fixed by a plurality of fastening bolts (7); the backwash pipe (2) being led out from the outlet pipeline of the booster pump; the outer ring of the filter screen bottom plate (3) being provided with a groove, and the filter screen bottom plate (3) being fixedly connected to the filter housing (1).

2. The crude brine pressure pump inlet filter with backwashing structure according to claim 1 is characterized in that: The filter screen pressing ring (5) is an annular pressing plate, and bolt holes are correspondingly provided on the filter screen pressing ring (5) and the filter screen bottom plate (3).

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