CN221763308U - An external flushing water system for mechanical seal of crystallization kettle - Google Patents

Abstract

The utility model relates to the technical field of mechanical seal flushing, and discloses an external flushing water system for mechanical seal of a crystallization kettle. One end of the first gate valve is provided with an outer flushing liquid inlet. The other end of the first gate valve is communicated with the metering pump. The metering pump is communicated with the buffer cavity. The buffer cavity is communicated with the back pressure valve. The back pressure valve is communicated with the second gate valve. The other end of the second gate valve is provided with an outer flushing liquid outlet. The utility model can control the flow and pressure of the externally-transported flushing water through the metering pump, and the pressure measuring assembly and the flowmeter measure the pressure and flow of the flushing water and accurately display the pressure and the flow. The filter filters solid particles in the wash water. The back pressure valve ensures that the flush water flows from the inlet to the outlet without reverse flow. The combination of the first flange assembly, the second flange assembly, the third flange assembly, and the fourth flange assembly may be installed in a variety of complex field spaces.

Description

An external flushing water system for mechanical seal of crystallization kettle

Technical Field

The utility model relates to the technical field of mechanical seal flushing, in particular to an external flushing water system for the mechanical seal of a crystallization kettle.

Background Art

The external flushing system of the existing technology can provide a flushing volume of no less than ^0.48m3 /h (8L/min), and the flushing volume cannot be accurately controlled. This flushing water volume is flushed into the kettle to mix with the materials. The longer the crystallization time of the materials in the kettle, the more flushing liquid enters the kettle, which will dilute the materials in the kettle, affect the crystallization reaction, and change the quality of the product.

In order to solve the above problems, we propose an external flushing water system for the mechanical seal of the crystallization kettle.

Utility Model Content

The utility model aims to provide an external flushing water system for mechanical seal of a crystallization kettle, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an external flushing water system for mechanical seal of a crystallization kettle, comprising a first gate valve, a metering pump, a buffer chamber, a back pressure valve and a second gate valve;

An external flushing liquid inlet is provided at one end of the first gate valve; the other end of the first gate valve is connected to the metering pump; the metering pump is connected to the buffer chamber; the buffer chamber is connected to the back pressure valve; the back pressure valve is connected to the second gate valve; the other end of the second gate valve is provided with an external flushing liquid outlet.

Preferably, a filter is provided between the first gate valve and the metering pump.

Preferably, the filter and the metering pump are connected via a first flange assembly.

Preferably, the metering pump is connected to the buffer chamber via a second flange assembly.

Preferably, a three-way assembly is provided between the buffer chamber and the back pressure valve.

Preferably, a safety valve is provided between the back pressure valve and the second gate valve.

Preferably, a measuring component is provided between the safety valve and the second gate valve.

Preferably, the measuring component includes a pressure measuring component and a flow meter; the pressure measuring component is arranged on the side of the safety valve away from the back pressure valve; the pressure measuring component is connected to the flow meter through a third flange component; and the flow meter is connected to the second gate valve through a fourth flange component.

Compared with the prior art, the utility model has the following beneficial effects: the external flushing water system for the mechanical seal of the crystallization kettle can control the flow and pressure of the external flushing water through a metering pump, and the pressure measuring component and the flow meter can measure the pressure and flow of the flushing water, wherein the flow parameters can be displayed locally and transmitted remotely to the DCS control room for real-time display.

The filter can filter the solid particles in the flushing water and provide clean external flushing water for the mechanical seal of the crystallization kettle.

The back pressure valve ensures that the flushing water flows from the inlet to the outlet without reverse flow.

The combination of the first flange assembly, the second flange assembly, the third flange assembly and the fourth flange assembly in the utility model can be installed in various complex on-site spaces.

The utility model is easy to operate and maintain; when replacing and maintaining system parts, it is not necessary to dismantle the entire system; only the first flange assembly, the second flange assembly, the third flange assembly and the fourth flange assembly need to be disassembled to remove the corresponding parts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the utility model.

In the figure: 1-first gate valve, 2-filter, 3-first flange assembly, 4-metering pump, 5-second flange assembly, 6-buffer chamber, 7-tee assembly, 8-back pressure valve, 9-safety valve, 10-pressure measuring assembly, 11-third flange assembly, 12-flow meter, 13-fourth flange assembly, 14-second gate valve.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to FIG. 1 . The utility model provides a technical solution: an external flushing water system for a mechanical seal of a crystallization reactor, comprising a first gate valve 1 , a metering pump 4 , a buffer chamber 6 , a back pressure valve 8 and a second gate valve 14 .

An external flushing liquid inlet is provided at one end of the first gate valve 1. The other end of the first gate valve 1 is connected to the metering pump 4. The metering pump 4 is connected to the buffer chamber 6. The buffer chamber 6 is connected to the back pressure valve 8. The back pressure valve 8 is connected to one end of the second gate valve 14. The other end of the second gate valve 14 is provided with an external flushing liquid outlet.

The back pressure valve 8 can ensure that the flushing water flows from the inlet to the outlet without generating reverse flow.

Furthermore, a filter 2 is provided between the first gate valve 1 and the metering pump 4. In the present utility model, the filter 2 is a Y-type filter.

Y-type filter is an indispensable filtering device for the pipeline system of conveying medium. Y-type filter is usually installed at the inlet end of pressure reducing valve, pressure relief valve, water level valve or other equipment to remove impurities in the medium to protect the normal use of valves and equipment. Y-type filter has the characteristics of advanced structure, small resistance and convenient sewage discharge. Y-type filter is suitable for water, oil and gas.

The Y-type filter is a small device that removes a small amount of solid particles from the liquid. It can protect the normal operation of the equipment. When the fluid enters the filter cartridge with a certain specification of filter screen, its impurities are blocked, and the clean filtrate is discharged from the filter outlet. When cleaning is required, just take out the detachable filter cartridge, treat it and reinstall it. Therefore, it is extremely convenient to use and maintain. The Y-type filter, also known as a decontamination device or filter valve, is an indispensable device in the pipeline system for conveying media. Its function is to filter mechanical impurities in the medium. It can filter rust, sand in sewage, and a small amount of solid particles in the liquid to protect the accessories on the equipment pipeline from wear and blockage, which can protect the normal operation of the equipment. The Y-type filter is Y-shaped, with one end allowing fluids such as water to pass through, and the other end precipitating waste and impurities.

Furthermore, the filter 2 and the metering pump 4 are connected via a first flange assembly 3 .

Furthermore, the metering pump 4 is connected to the buffer chamber 6 via the second flange assembly 5 .

Furthermore, a three-way assembly 7 is provided between the buffer chamber 6 and the back pressure valve 8 .

Furthermore, a safety valve 9 is provided between the back pressure valve 8 and the second gate valve 14 .

Furthermore, a measuring component is provided between the safety valve 9 and the second gate valve 14 .

Further, the measuring assembly includes a pressure measuring assembly 10 and a flow meter 12. The pressure measuring assembly 10 is arranged on a side of the safety valve 9 away from the back pressure valve 8. The pressure measuring assembly 10 is connected to the flow meter 12 via a third flange assembly 11. The flow meter 12 is connected to the second gate valve 14 via a fourth flange assembly 13.

The utility model controls the flow rate and pressure of the external flushing water through the metering pump 4, and the pressure measuring component 10 and the flow meter 12 can measure the pressure and flow rate of the flushing water, wherein the flow rate parameters can be displayed locally and transmitted to the DCS control room for real-time display.

The combination of the first flange assembly 3, the second flange assembly 5, the third flange assembly 11 and the fourth flange assembly 13 in the utility model can be installed in various complex on-site spaces.

The utility model is easy to operate and maintain. When replacing and repairing system parts, there is no need to dismantle the entire system. Only the first flange assembly 3, the second flange assembly 5, the third flange assembly 11 and the fourth flange assembly 13 need to be disassembled to remove the corresponding parts.

The utility model is easy to manufacture and use, and is particularly suitable for a mechanical sealing device for a crystallization kettle. The utility model meets the configuration requirements of a PLAN32 system.

Applicable in the following environments:

Pressure: P≤6.3Mpa. Temperature: T≤200℃. Maximum flow rate: Q≤0.016m ³ /h. Working flow rate: 0.003m ³ /h～0.005m ³ /h.

Working principle:

The first gate valve 1 and the second gate valve 14 are opened, and the flushing water filters impurities in the filter 2, and is metered and pressurized by the metering pump 4 to adjust the flow rate. The flushing water stabilizes the pressure in the buffer chamber 6. After the flushing water passes through the back pressure valve 8 and the safety valve 9, the pressure is measured at the pressure measuring component 10, and the flow rate is measured at the flow meter 12. Finally, the flushing water enters the sealing chamber of the subsequent process through the external flushing outlet.

It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims (8)

1. An external flushing water system for a mechanical seal of a crystallization reactor, characterized in that it comprises a first gate valve (1), a metering pump (4), a buffer chamber (6), a back pressure valve (8) and a second gate valve (14); One end of the first gate valve (1) is provided with an external flushing liquid inlet; the other end of the first gate valve (1) is connected to the metering pump (4); the metering pump (4) is connected to the buffer chamber (6); the buffer chamber (6) is connected to the back pressure valve (8); the back pressure valve (8) is connected to one end of the second gate valve (14); the other end of the second gate valve (14) is provided with an external flushing liquid outlet. 2. An external flushing water system for mechanical seal of a crystallization reactor according to claim 1, characterized in that a filter (2) is provided between the first gate valve (1) and the metering pump (4). 3. An external flushing water system for mechanical seal of a crystallization reactor according to claim 2, characterized in that the filter (2) and the metering pump (4) are connected via a first flange assembly (3). 4. The external flushing water system for mechanical seal of a crystallization reactor according to claim 1, characterized in that the metering pump (4) is connected to the buffer chamber (6) through a second flange assembly (5). 5. The external flushing water system for mechanical seal of a crystallization reactor according to claim 1, characterized in that a three-way assembly (7) is provided between the buffer chamber (6) and the back pressure valve (8). 6. The external flushing water system for mechanical seal of a crystallization reactor according to claim 1, characterized in that a safety valve (9) is provided between the back pressure valve (8) and the second gate valve (14). 7. An external flushing water system for mechanical seal of a crystallization reactor according to claim 6, characterized in that a measuring component is provided between the safety valve (9) and the second gate valve (14). 8. An external flushing water system for a mechanical seal of a crystallization reactor according to claim 7, characterized in that the measuring component comprises a pressure measuring component (10) and a flow meter (12); the pressure measuring component (10) is arranged on a side of the safety valve (9) away from the back pressure valve (8); the pressure measuring component (10) is connected to the flow meter (12) via a third flange component (11); the flow meter (12) is connected to the second gate valve (14) via a fourth flange component (13).