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CN-224215567-U - Corrosion-resistant rectangular expansion tank

CN224215567UCN 224215567 UCN224215567 UCN 224215567UCN-224215567-U

Abstract

The utility model provides a corrosion-resistant rectangular expansion tank, wherein a rubber diaphragm is arranged in an outer shell to mark a water accommodating cavity communicated with a liquid inlet pipe and an air accommodating cavity communicated with an air inlet pipe, a corrosion-resistant coating is arranged on the inner wall of the outer shell and is matched with a nickel plating protective layer arranged on the inner and outer surfaces of the liquid inlet pipe so as to avoid the expansion tank and a liquid receiving structure thereof from directly contacting with water liquid for a long time so as to be corroded or rusted by the water liquid, a filter screen structure capable of being opened and closed in one direction is arranged on an outlet of the liquid inlet pipe and is matched with a reset component and a limit groove arranged on the inner wall of the liquid inlet pipe so as to filter impurities carried by the water liquid in one direction when the water liquid enters the expansion tank, so that the corrosion of the impurities to the interior of the expansion tank is avoided to the greatest extent, and in addition, an annular sealing ring-shaped sealing ring arranged at intervals and wound on the inner wall of the liquid inlet pipe is matched with an outer end of the liquid inlet pipe so as to ensure a good leakage-proof function of a joint.

Inventors

  • ZHOU XIANGLEI
  • YANG LINPENG

Assignees

  • 广州耐谊通用设备有限公司

Dates

Publication Date
20260508
Application Date
20250527

Claims (10)

  1. 1. A corrosion-resistant rectangular expansion water tank comprises an outer shell, a liquid inlet pipe and an air inlet pipe, and is characterized in that corrosion-resistant coatings are covered on the inner wall of the outer shell, a rubber diaphragm is arranged in the corrosion-resistant rectangular expansion water tank, the rubber diaphragm divides the inner part of the outer shell into a gas accommodating cavity and a water accommodating cavity with adjustable space, the liquid inlet pipe is communicated with the water accommodating cavity, the air inlet pipe is communicated with the gas accommodating cavity, nickel plating protective layers are arranged on the inner wall and the outer surface of the liquid inlet pipe, the nickel plating protective layers penetrate through the inner wall of the outer shell and comprise a pipe body penetrating through the outer shell, an outer outlet arranged on the outer side of the outer shell and an inner outlet arranged at the water accommodating cavity, a filter screen structure capable of being opened and closed in one direction is arranged at the inner outlet, the filter screen structure comprises a filter screen, a hinge piece and a limiting piece, one end of the auxiliary flexible piece is fixed at the position of the filter screen, the hinge piece and the limiting piece are symmetrically arranged at two ends of the filter screen, the hinge piece is hinged to the inner wall of the pipe body, the inner wall of the outer wall is close to the inner wall of the outer wall, the inner wall of the inner wall is provided with a reset groove, and one side of the reset groove is arranged opposite to the reset groove is arranged at the position of the reset groove of the inner wall.
  2. 2. The corrosion-resistant rectangular expansion tank according to claim 1, further comprising an adjusting assembly, wherein the adjusting assembly comprises an adjusting groove and an adjusting block, the adjusting groove is formed in one side, close to the outer outlet, of the hinge piece on the inner wall of the pipe body, the length of the adjusting groove is identical to the diameter of the filter screen, and the adjusting block is arranged on one side, close to the inner outlet, of the hinge piece on the inner wall of the pipe body.
  3. 3. The corrosion-resistant rectangular expansion tank according to claim 2, wherein the reset assembly comprises two sets of reset springs, protective films and traction springs, the reset springs are respectively arranged at two ends in the adjusting groove, the protective films are connected to the inner walls of the pipe body outside the two ends of the adjusting groove, one end of each traction spring is connected to the filter screen at a position close to the hinge piece, and the other end of each traction spring is connected to the adjusting block.
  4. 4. The corrosion-resistant rectangular expansion tank of claim 1, wherein said tubular body has threaded segments for connection, said threaded segments for connection being wound with strips of composite fibers at intervals on a section of said tubular body adjacent said outer outlet.
  5. 5. The corrosion-resistant rectangular expansion tank of claim 1, wherein said outer outlet end is provided with an annular seal ring.
  6. 6. The corrosion-resistant rectangular expansion tank of claim 1, wherein said outer housing comprises an upper housing, a lower housing and a securing member, said upper housing and lower housing being symmetrically connected, said securing member surrounding said junction of said upper housing and lower housing.
  7. 7. The corrosion-resistant rectangular expansion tank of claim 1, wherein said air inlet pipe is provided with a control valve, and a cover is further provided outside said control valve.
  8. 8. A corrosion resistant rectangular expansion tank according to claim 1, wherein said gas receiving chamber is pre-filled with an amount of nitrogen.
  9. 9. The corrosion-resistant rectangular expansion tank of claim 1, wherein said outer housing surface is provided with a rust-resistant coating.
  10. 10. The corrosion-resistant rectangular expansion tank of claim 1, wherein said outer housing surface is provided with a label slot.

Description

Corrosion-resistant rectangular expansion tank Technical Field The utility model belongs to the technical field of expansion water tanks, and particularly relates to a corrosion-resistant rectangular expansion water tank. Background The expansion water tank is an important part in a wall-mounted boiler and a heating ventilation air conditioning system, and plays roles of water containing and constant pressure in the heating system, because of the role of thermal expansion and cold contraction of the water in the heating system, the water volume in the heating system is increased when the system is heated, when the expansion volume of the water containing system is not contained, the water pressure in the heating system is increased, the normal operation is influenced, at the moment, the expansion volume of the water containing system by the expansion water tank can reduce the fluctuation of the water pressure caused by the expansion of the water, when the system leaks water or the system is cooled due to a certain reason, the expansion water tank is used for supplementing water for the system, the point of the expansion water tank connected with the system is always used as a constant pressure point or a constant pressure point of the system, the system can be guaranteed not to empty, not to be overpressurized and not to improve the safety and reliability of the system operation, and meanwhile, the expansion water tank is always connected to the inlet of a water pump through the constant pressure effect of the expansion water tank, the conventional expansion water tank is used for a certain protection effect, and in a long-time use process, the part contacted with the water tank can be damaged by the corrosion liquid or the corrosion liquid in the water pump due to lack of corresponding functional means, the expansion water tank is damaged by the expansion water tank, the expansion water tank is greatly damaged due to the fact that the expansion water tank is carried by the corrosion liquid or the corrosion liquid in the water tank is used for a long-time, the service life of the expansion water tank is not normally, and the expansion water tank is replaced, and the problem is caused to be greatly when the normal, and the service cost is caused. Aiming at the existing phenomena and problems, the corrosion-resistant rectangular expansion water tank is provided for intensive research, the corrosion resistance of the expansion water tank is improved, the service life of a product is prolonged, and the competitiveness of the product is improved. Disclosure of utility model Aiming at the prior problems, the utility model provides the corrosion-resistant rectangular expansion water tank, wherein the surface of the part of the expansion water tank, which is contacted with water liquid, is provided with the protective layer, and is matched with the special filter screen structure arranged on the liquid inlet pipe, so that the corrosion resistance of the expansion water tank is improved, the service life of a product is prolonged, and the competitiveness of the product is improved. The utility model provides a corrosion-resistant rectangular expansion water tank, which comprises an outer shell, a liquid inlet pipe and an air inlet pipe, wherein corrosion-resistant coatings are respectively covered on the inner wall of the outer shell, a rubber diaphragm is arranged in the inner wall of the outer shell, the rubber diaphragm divides the inner part of the outer shell into a gas accommodating cavity and a water accommodating cavity with adjustable space, the liquid inlet pipe is communicated with the water accommodating cavity, the air inlet pipe is communicated with the gas accommodating cavity, nickel plating protective layers are respectively arranged on the inner wall and the outer surface of the liquid inlet pipe, the nickel plating protective layers penetrate through the pipe body of the outer shell, an outer outlet arranged outside the outer shell and an inner outlet arranged at the water accommodating cavity, a filter screen structure capable of being opened and closed in one direction is arranged at the inner outlet, the filter screen structure comprises a filter screen, a hinge piece and a limiting piece, one end of the auxiliary flexible piece is fixed at the position of the filter screen, the hinge piece and the limiting piece are symmetrically arranged at two ends of the filter screen, the hinge piece is hinged on the inner wall of the pipe body, the position of the inner wall near the inner wall of the outer wall is the inner wall of the outer wall, and the inner wall is provided with a reset groove opposite to the hinge piece, and one side of the reset groove is arranged on the hinge piece is opposite to the position of the inner wall, and the reset groove is arranged. Preferably, the pipe is further provided with an adjusting assembly, the adjusting assembly comprises an adjusting groove and an adjusting