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CN-116104972-B - Pressure reducing valve for building water supply

CN116104972BCN 116104972 BCN116104972 BCN 116104972BCN-116104972-B

Abstract

The invention relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve for building water supply, which comprises a pressure reducing valve body, wherein the pressure reducing valve body is used for converting high-pressure water flow into proper service water pressure and flow, a filtering unit is arranged in the water inlet direction of the pressure reducing valve body and is used for filtering out impurity and foreign matters in water, the impurity and foreign matters in the water are prevented from entering the pressure reducing valve to influence the operation of the pressure reducing valve, an exhaust unit is arranged in the water inlet direction of the pressure reducing valve body and is used for releasing bubbles generated after the water flow passes through the filtering unit to the outside of the valve body. According to the invention, the filtering unit and the exhaust unit are arranged in the water inlet direction of the water supply and pressure reducing valve, so that the water supply and pressure reducing valve can realize three functions of filtering, exhausting and pressure reducing simultaneously, and the problems of complicated installation steps and high installation cost of the pressure reducing valve caused by the fact that a plurality of accessories are required to be installed when the water supply and pressure reducing valve is installed in the existing building are solved.

Inventors

  • WANG XIAOLIN
  • JIANG BINLONG
  • RAN LAIQUN
  • LIN QIANG

Assignees

  • 浙江埃茨阀门科技有限公司

Dates

Publication Date
20260512
Application Date
20221226

Claims (6)

  1. 1. A pressure reducing valve for water supply in a building, comprising: A relief valve body (1), the relief valve body (1) being adapted to convert a high pressure water flow into a suitable service water pressure and flow; Characterized by further comprising: The filtering unit is arranged in the water inlet direction of the pressure reducing valve body (1) and is used for filtering out impurity and foreign matters in water, the impurity and foreign matters in the water are prevented from entering the pressure reducing valve body (1) to influence the operation of the pressure reducing valve body (1), and the fool-proof device for preventing the filter component from being missed is arranged on the filtering unit; the air exhaust unit is arranged in the water inlet direction of the pressure reducing valve body (1), and is positioned between the filtering unit and the pressure reducing valve body (1) and used for releasing bubbles generated after water flow passes through the filtering unit to the outside of the valve body; The fool-proof device comprises a T-shaped pipeline (11) arranged on the side wall of a first pipeline (201), the horizontal part of the T-shaped pipeline (11) is communicated with the inner side wall of the groove, a membrane (12) is arranged between the T-shaped pipeline (11) and the groove, a trigger rod (13) is elastically arranged on the horizontal part of the T-shaped pipeline (11), a wedge-shaped notch is arranged on the trigger rod (13), a clamping column (14) is movably arranged on the vertical part of the T-shaped pipeline (11), and one end, close to the trigger rod (13), of the clamping column (14) is provided with an inclined plane matched with the wedge-shaped notch; The exhaust unit comprises a pipeline II (202), an exhaust pipe, a floating block (17), a sealing ring III (603), a guide rod (16) and a partition plate (18), wherein the exhaust pipe consists of an exhaust pipe I (1501) and an exhaust pipe II (1502), the pipeline II (202) is installed between the pipeline I (201) and a pressure reducing valve body (1), an exhaust pipe I (1501) which is mutually communicated with the inside of the pipeline II (202) is installed on the outer side wall of the pipeline II (202), the exhaust pipe I (1501) is perpendicular to the outer side wall of the pipeline II (202), the guide rod (16) is fixedly installed at one end, connected with the exhaust pipe I (1501), of the exhaust pipe II (1502), the guide rod (16) is coaxial with the exhaust pipe I (1501), the floating block (17) is movably installed on the guide rod (16), a partition plate (18) is fixedly installed at one end, close to the exhaust pipe II (1502), of the partition plate (18) is provided with a through hole, and one side, close to the floating block (17), of the partition plate (18), is provided with the sealing ring III (603). A mechanical seal is adopted between the pipeline II (202) and the pipeline I (201) and the pressure reducing valve body (1), a fixing device for maintaining the exhaust pipe I (1501) to be vertical upwards all the time is arranged on the outer side wall of the pipeline II (202), and a level meter (19) perpendicular to the axes of the pipeline II (202) and the exhaust pipe I (1501) is arranged on the outer side wall of the pipeline II (202); One end of the floating block (17) far away from the partition plate (18) is conical.
  2. 2. The reducing valve for building water supply of claim 1, wherein the filtering unit comprises a first pipeline (201), a filtering piece (4) and a rapid switching device which is convenient for replacing the filtering piece (4), a semicircular notch (2011) is formed in the first pipeline (201), a groove is formed in the inner side of the first pipeline (201), a magnet (3) which is used for fixing the filtering piece (4) in an auxiliary mode is arranged at the bottom of the groove, the width of the semicircular notch (2011) is larger than that of the groove, a foolproof device is arranged on the side wall of the first pipeline (201), the filtering piece (4) is arranged in the groove, and the rapid switching device is slidably arranged on the outer side wall of the first pipeline (201).
  3. 3. The reducing valve for building water supply according to claim 2, wherein one side of the semicircular notch (2011) is flush with the inner side wall of the groove on one side close to the valve body (1) of the reducing valve.
  4. 4. The reducing valve for building water supply according to claim 2, wherein the quick switch device comprises a chute arranged on the outer side wall of a first pipeline (201), a shaft sleeve (5) is slidably arranged on the chute, a projection matched with the chute is arranged on the inner side wall of the shaft sleeve (5), a first sealing ring (601) for sealing a semicircular notch (2011) is arranged in the middle of the inner side wall of the shaft sleeve (5), a positioning hole (7) is formed in one end, close to the valve body (1), of the inner side wall of the shaft sleeve (5), a plurality of movable through holes (8) are uniformly formed in one end, close to the valve body (1), of the first pipeline (201), movable grooves (9) are formed in the movable through holes (8), a second sealing ring (602) is arranged in the movable grooves (9), and a positioning block (10) is movably arranged in the movable through holes (8) close to the outer side wall of the first pipeline (201).
  5. 5. A pressure reducing valve for building water supply according to claim 2, wherein the filter (4) is in the shape of a circular plate.
  6. 6. The reducing valve for building water supply according to claim 1, wherein the fixing device comprises at least one of bolt (20) fixing, wedge block embedding fixing or unidirectional self-locking fixing by using a worm gear.

Description

Pressure reducing valve for building water supply Technical Field The invention relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve for building water supply. Background Existing building water supply pressure reducing valves are generally used to convert high pressure water flow into suitable service water pressure and flow. According to the design, installation and maintenance points of the building water supply and pressure reducing valve, in order to prevent construction dust and fine garbage such as putty, broken stone and the like from entering the pressure reducing valve and affecting the operation of parts inside the pressure reducing valve, a pipeline filter is required to be installed in front of the pressure reducing valve. According to the building water supply pressure reducing valve application design rules, since the pressure and flow rate of water flow at the pressure reducing valve are changed, cavitation is easily generated at the pressure reducing valve, the service life of the pressure reducing valve is reduced, and in order to prevent the cavitation, an exhaust device is generally installed at the corner of a pipeline. Therefore, when the water supply and pressure reducing valve is installed in the existing building, the pipeline filter and the exhaust device are required to be installed in a matched mode, the pipeline is required to be cut into multiple sections in the existing construction, multiple groups of rod guide connecting fittings are required, and the installation method can cause the problems of complicated installation steps and high installation cost of the pressure reducing valve. Therefore, a pressure reducing valve for building water supply is provided. Disclosure of Invention The invention aims to provide a pressure reducing valve for building water supply, which is characterized in that a filtering unit and an exhaust unit are arranged in the water inlet direction of the water supply pressure reducing valve, so that one water supply pressure reducing valve can realize three functions of filtering, exhausting and reducing simultaneously, and the problems in the background technology are solved. In order to achieve the above purpose, the present invention provides the following technical solutions: A pressure reducing valve for water supply in a building, comprising: a relief valve body for converting high pressure water flow into suitable service water pressure and flow; Further comprises: the pipeline in the water inlet direction of the pressure reducing valve is provided with a filtering unit, the water inlet direction of the valve body of the pressure reducing valve is provided with a filtering unit, the filtering unit is used for filtering out impurity and foreign matters in water, the impurity and foreign matters in the water are prevented from entering the pressure reducing valve to influence the operation of the pressure reducing valve, and the filtering unit is provided with a fool-proof device for preventing a filtering piece from being missed to be installed; and the air exhaust unit is arranged in the water inlet direction of the pressure reducing valve body, is positioned between the filtering unit and the pressure reducing valve body and is used for releasing bubbles generated after water flows through the filtering unit to the outside of the valve body. The water supply and pressure reducing valve is installed in a common building to ensure that proper service water pressure and flow are obtained at each water point, and the water leakage rate and waste degree are almost proportional to the water pressure of a water supply system, so that the pressure reducing valve also has the functions of improving the operation working condition and saving potential water, and the water saving effect is about 30 percent according to statistics. Because a large amount of sand, stone, putty, dust and other impurity foreign matters can be generated during building construction and house decoration, part of impurity foreign matters can enter the pipeline when the pipeline is installed, the impurities can move in the pipeline along with water flow, and can be accumulated in the pressure reducing valve when entering the pressure reducing valve, so that the pressure reducing valve is blocked and the operation of parts in the pressure reducing valve is influenced, and therefore, a pipeline filter is required to be installed in the water inlet direction of the pressure reducing valve. When the water flow in the pipeline passes through the filter, bubbles in the water flow are easily released under the action of the filter element, and when the bubbles pass through the pressure reducing valve, the bubbles are easily eroded at the pressure reducing valve due to the large change of the pressure and the flow speed at the pressure reducing valve, so that the service life of the pressure reducing valve is reduced, and an exhaust dev