KR20040098911A - Strainer having manometer - Google Patents

Abstract

PURPOSE: A strainer having pressure gauges is provided to enable a worker to easily detect impurities inside by the pressure difference between an inlet and an outlet. CONSTITUTION: A strainer is composed of a pipe(10) having an inlet(10a) and an outlet(10b), a straining member(20), an inflow pressure gauge(60), and an outflow pressure gauge(70). A straining unit(10c) is formed at the middle part of the pipe, and is stopped up by a stopper member(30). A gasket(2) is installed between the straining unit and the stopper member, and seals a space between the straining unit and the stopper member. The straining member is installed at the straining unit of the pipe, and has first and second straining nets(21,22) for straining impurities from fluid flowing in the pipe. The inflow pressure gauge is installed at an inflow-pressure measuring pipe(40) formed at the inlet of the pipe. The outflow pressure gauge is installed at an outflow-pressure measuring pipe(50) formed at the outlet of the pipe. Ball valves(80) are installed at the inflow-pressure measuring pipe and the outflow-pressure measuring pipe, respectively.

Description

Strainer having manometer

The present invention relates to a strainer, and more particularly to a strainer provided with a pressure gauge.

In general, in order to transfer a fluid such as water or oil stored in a certain place, a pipe is used to move the fluid to a specific place, and the fluid flowing inside the pipe itself contains dirt or is generated from the pipe. Sludges (hereinafter referred to as 'foreign materials') generated when welding pipes or soil such as rust are present, which causes a problem of clogging the pipes.

The blockage of the pipes caused by these foreign substances, in particular, causes the pump for forcibly transferring the fluid, the temperature control valve for controlling the temperature of the conveyed fluid and other control valves, and so on. The problem arises that it has to be replaced. In order to prevent this from happening, a strainer equipped with a metal mesh screen to filter the foreign substances in a pipe has been used, and a method of periodically cleaning the strainer or replacing the filter net has been used.

In this case, to check if the strainer is clogged and it is time to clean the strainer, the operating equipment must be taken down and the strainer must be disassembled.

Direct disassembly of such a strainer requires a device (spanner, monkey) and inspection personnel, etc., which requires a lot of time.

In addition, during frequent cleaning of the strainer, the external floor is contaminated due to the discharge of foreign substances present in the strainer, and a device for preventing the same is required.

In addition, when the strainer is frequently disassembled, detailed management is required to prevent deformation of the filter network inside the strainer, and after cleaning the strainer, a new gasket is frequently required to prevent leakage of the strainer.

The present invention is to solve the above problems, an object of the present invention is to provide a strainer for reducing the time to directly disassemble the strainer to check and check whether the strainer is clogged.

1 is a cross-sectional view of a strainer according to an embodiment of the present invention before foreign matter is accumulated in the filtration member,

2 is a cross-sectional view of a strainer according to an embodiment of the present invention when foreign matter is accumulated in the filtration member.

<Description of the symbols for the main parts of the drawings>

10; Pipe 10a; Inlet

10b; Outlet 10c; Filtration

20; Filtration member 40; Inlet pressure gauge

50; Outlet pressure measuring tube 60; Inlet pressure gauge

70; Outflow pressure gauge 80; Ball valve

The strainer of the present invention for achieving the above object is a pipe having an inlet and an outlet; A filtering member installed in the filtering part of the pipe and filtering foreign matter contained in the fluid passing through the pipe; An inlet pressure gauge installed in an inlet pressure measuring tube formed at an inlet side of the pipe; It is preferable to include the outflow pressure gauge provided in the outflow pressure measuring tube formed in the outlet side of the said pipe.

In addition, the inlet pressure measuring tube and the outlet pressure measuring tube is preferably provided with a ball valve.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a strainer before foreign matter is accumulated in the filtration member, and FIG. 2 is a cross-sectional view of the strainer when foreign matter is accumulated in the filtration member.

Referring to FIG. 1, a strainer according to an embodiment of the present invention is connected to a middle of a flow path and a pipe 10 through which a fluid passes along the inside thereof, and is installed in the pipe 10 to pass through the pipe 10. It consists of a filtration member 20 for filtering foreign matter contained in the fluid.

The pipe 10 is open at both ends thereof, and an inlet 10a is formed at one side thereof, and an outlet 10b is formed at the other side thereof. The filtration part 10c in which the filtration member 20 is installed in the intermediate part of the pipe 10 protrudes inclined in the longitudinal direction of the pipe 10, and is formed. The filtration unit 10c is blocked by the blocking member 30, and a gasket 2 for sealing between the filtration unit 10c and the blocking member 30 is provided between the filtration unit 10c and the blocking member 30. Installed in

The filtering member 20 may be formed of a double tube type in which two porous filter networks having different sizes overlap. That is, the outer first filtration net 21 constituting the filtration member 20 has a structure in which a plurality of fluid passage holes 21a are perforated, and the second filtration net 22 coupled to the inside of the first filtration net 21. ) Has a mesh structure.

An inlet pressure measuring tube 40 is formed at the inlet side of the pipe, and an inlet pressure gauge 60 is provided at the end of the inlet pressure measuring tube 40. The outflow pressure measuring tube 50 is formed on the outlet side of the pipe, and the outflow pressure gauge 70 is provided at the end of the outflow pressure measuring tube 50. The inlet pressure measuring tube 40 and the outlet pressure measuring tube 50 are preferably about 10 mm.

Therefore, the fluid A1 introduced into the filtration member 20 through the inlet 10a flows into the filtration part 10c by the guide jaw 10d formed in the pipe. The fluid flowing into the filtration unit 10c sequentially passes through the second filtering net 22 and the first filtering net 21 to filter foreign substances contained therein, and only the pure fluid A2 passes through the outlet 10b. Get out.

In this case, as illustrated in FIG. 2, when the foreign substance 90 is filtered by the filter member 20 by the use of the strainer, and the foreign substance 90 accumulates in the filtering member 20, the filter member 20 is transferred to the filtration member 20. A pressure difference occurs between the fluid A1 flowing in and the fluid A2 passing through the filtering member 20. That is, the pressure of the fluid A2 passing through the filtering member 20 in which the foreign matter 90 is accumulated becomes lower than the pressure of the fluid A1 flowing into the filtering member 20.

Therefore, in FIG. 1, which is a view before the foreign matter 90 is accumulated in the filtration member 20, the pressures of the inlet pressure gauge 60 and the outlet pressure gauge 70 are the same, but the foreign matter 90 is applied to the filtration member 20. In FIG. 2, which is a diagram in which this is accumulated, the display pressure of the outflow pressure gauge 70 is lower than the display pressure of the inflow pressure gauge 60.

Thus, by comparing the pressure difference between the inlet pressure gauge 60 provided on the inlet side of the pipe and the outlet pressure gauge 70 provided on the outlet side of the pipe, it is possible to check whether the strainer is blocked. If the pressure difference is large, since a large amount of foreign matter is accumulated in the strainer, the filtration member 20 inside the strainer should be replaced.

By installing the inlet pressure gauge and the outlet pressure gauge, it is possible to check whether there is any foreign matter inside the strainer, which makes it easy to know when the strainer is cleaned, and whether the strainer is clogged by the difference between the inlet pressure gauge and the outlet pressure gauge. Unnecessary time for direct decomposition can be reduced.

Meanwhile, the inlet pressure measuring tube 40 and the outlet pressure measuring tube 50 are provided with a ball valve 80 so that the inlet pressure gauge 60 or the outlet pressure gauge 70 is replaced by using the ball valve 80. The pressure inside the strainer can be kept constant by locking the pressure measuring tube 40 and the outflow pressure measuring tube 50.

In addition, a device for collecting and comparing the measured values of the inlet pressure gauge 60 and the outlet pressure gauge 70 may be installed, and if there is a difference between the measured values of the inlet pressure gauge 60 and the outlet pressure gauge 70, an alarm signal lamp is informed. The giving device may additionally be installed.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Could be. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

The strainer according to the present invention has the advantage that it is not necessary to disassemble the strainer directly to confirm the presence or absence of foreign matter inside the strainer by installing the inlet pressure gauge and the outlet pressure gauge and comparing the difference.

Therefore, there is an advantage that no additional workforce or device is necessary for checking the clogging of the strainer, and there is an advantage that care for the management of the filter network is unnecessary when disassembling the strainer.

Claims (2)

Pipes having inlets and outlets; A filtering member installed in the filtering part of the pipe and filtering foreign matter contained in the fluid passing through the pipe; An inlet pressure gauge installed in an inlet pressure measuring tube formed at an inlet side of the pipe; Outflow pressure gauge provided in the outflow pressure measuring tube formed on the outlet side of the pipe Strainer comprising a. In claim 1, The strainer is provided with a ball valve in the inlet pressure measuring pipe and the outlet pressure measuring pipe.