CN-115263765-B - Cylinder driven pneumatic condensate pump

CN115263765BCN 115263765 BCN115263765 BCN 115263765BCN-115263765-B

Abstract

The invention provides a pneumatic condensate pump driven by an air cylinder, which has a simple structure and is convenient to use, and comprises a pump storage tank, a pump cover arranged on the pump storage tank and used for sealing the pump storage tank, a water inlet arranged on the pump storage tank and used for allowing condensate to flow in, and a water outlet arranged on the pump storage tank and matched with the water inlet and used for allowing the condensate to be discharged, wherein the pump cover is also provided with an air pressure control device used for controlling air inlet in the pump storage tank to control condensate in the pump storage tank to be discharged out of the pump storage tank or controlling air outlet in the pump storage tank to control condensate to flow in the pump storage tank, and the water inlet and the water outlet are also provided with an anti-backflow device matched with the air pressure control device and used for closing the water inlet when condensate flows out of the pump storage tank or closing the water outlet when condensate flows into the pump storage tank and preventing condensate flowing out of the water outlet from flowing back to the pump storage tank.

Inventors

WANG BEN
HONG WENHUI
HONG XINWEI
HONG XINQIANG
KANG YAJUN
YANG XIAOYANG
HONG WEIPENG
Hong Xiongyan
GUO JINDING
CHEN YASHAN
WU HONGPENG
Rao Dashuang

Assignees

英侨机械制造有限公司

Dates

Publication Date: 20260505
Application Date: 20220825

Claims (5)

1. The pneumatic condensate pump driven by the air cylinder comprises a pump body storage tank, a pump cover arranged on the pump body storage tank and used for sealing the pump body storage tank, a water inlet arranged on the pump body storage tank and used for allowing condensate to flow in, and a water outlet arranged on the pump body storage tank and matched with the water inlet and used for discharging the condensate, and is characterized in that the pump cover is also provided with an air pressure control device used for controlling air inlet in the pump body storage tank and thereby controlling condensate in the pump body storage tank to be discharged from the pump body storage tank or controlling air outlet in the pump body storage tank and thereby controlling condensate to enter the pump body storage tank, and the water inlet and the water outlet are also provided with an anti-backflow device matched with the air pressure control device and used for closing the water inlet when condensate flows out of the pump body storage tank and avoiding condensate flowing out of the water outlet from the water inlet or closing the water outlet when condensate flows into the pump body storage tank and avoiding condensate flowing back to the pump body storage tank; The air pressure control device comprises an air inlet device arranged on the pump cover and an exhaust device arranged on the pump cover, wherein a valve core connecting plate for controlling the opening and closing states of the air inlet device and the exhaust device simultaneously is arranged on the pump cover through a driving device, so that the air inlet device cannot enter air when the exhaust device is in exhaust or the exhaust device cannot exhaust air when the air inlet device is in air; The air inlet device comprises an air inlet valve seat, a self-closing device and a control device, wherein the air inlet valve seat is arranged on the pump cover and communicated with an external power air source for conveying air into the pump body storage tank; The self-closing device comprises a sealing ball, an annular limiting table and an air inlet valve needle, wherein the sealing ball is arranged in the air inlet valve seat in a sliding manner, the annular limiting table is arranged in the air inlet valve seat and used for preventing the sealing ball from sliding downwards into a pump body storage tank and sealing the air inlet valve seat in a matched manner with the sealing ball, and the air inlet valve needle is arranged on the valve core connecting plate and used for jacking the sealing ball through the annular limiting table when the valve core connecting plate moves upwards in a sliding manner so as to release sealing; The exhaust device comprises an exhaust valve seat arranged on the pump cover and communicated with the external atmospheric environment and used for exhausting gas in the pump body storage tank, and an exhaust valve core arranged on the valve core connecting plate and used for closing the exhaust valve seat or opening the exhaust valve seat in a downward translation way along with the upward translation of the valve core connecting plate; The driving device comprises a supporting frame arranged on the pump cover and a driving air cylinder arranged on the supporting frame and connected with an external air pump, wherein a piston rod of the driving air cylinder penetrates through the pump body storage tank and is connected with the valve core connecting plate to drive the valve core connecting plate to translate up and down.
2. A cylinder-driven pneumatic condensate pump as set forth in claim 1, wherein said backflow prevention means comprises a first check valve provided at said water inlet for preventing condensate from flowing back out of the pump body tank from the water inlet when the air pressure in the pump body tank increases, and a second check valve provided at said water outlet for preventing condensate that has flowed out of the pump body tank from flowing back into the pump body tank and allowing condensate to flow out when the air pressure increases.
3. The cylinder-driven pneumatic condensate pump of claim 1, wherein the pump cover is further provided with a liquid level control device for automatically adjusting the liquid level in the pump body storage tank.
4. A cylinder-driven pneumatic condensate pump as claimed in claim 3, wherein the liquid level control device is characterized in that a liquid level meter for detecting the liquid level height in the pump body storage tank and driving condensate to be discharged out of the pump body storage tank is arranged on the pump cover and matched with the air pressure control device.
5. The cylinder-driven pneumatic condensate pump of claim 1, wherein the intake valve seat and the exhaust valve seat are further provided with air guide holes for accelerating intake speed and exhaust speed.

Description

Cylinder driven pneumatic condensate pump Technical Field The invention relates to the technical field of condensate pumps, in particular to a pneumatic condensate pump driven by a cylinder. Background The condensate pump is an important condensate recovery device which ensures that condensate generated in normal operation of a steam system can be fully recycled and saves energy, the condensate is desalted water subjected to high temperature and water treatment, on one hand, the heat energy in the condensate can be recovered, the fuel is saved, the energy waste is avoided, the environmental pollution is reduced, and on the other hand, precious water resources, chemical agents and pollution discharge losses can be saved. The energy consumed by the steam heating system plays an important role in the energy consumption of China, the recovery of condensed water of the steam system is important to the saving of heat energy of the system, the recovery of the condensed water not only saves coal, but also correspondingly reduces the discharge amount of CO2, SO2 and dust generated by burning the part of coal, and simultaneously means that auxiliary raw materials, electric power, water, manpower, equipment depreciation and the like consumed by producing the part of steam are saved, SO that the condensed water pump is an energy-saving and environment-friendly product. In the current market, the types of the common condensate pump are an electric condensate pump, a mechanical floating ball type pneumatic condensate pump and the like, because the characteristic of condensate water of a steam system is high temperature, the high-temperature condensate water is extremely easy to cause cavitation of an impeller and leakage of a mechanical seal, so that the impeller and the mechanical seal are frequently replaced, the long-term stable operation of the electric condensate pump is influenced, in addition, the steam condensate water is also characterized in that water hammer is frequently existed, and the mechanical floating ball type condensate pump can cause floating balls to be flattened to lose buoyancy, so that internal parts are damaged, the mechanical floating ball type mechanism is invalid, and the stable operation of the mechanical floating ball type condensate pump is influenced, so that the novel electromechanical integrated pneumatic condensate pump with cavitation resistance, water hammer resistance, simple mechanism and long service life is required to be developed. Disclosure of Invention Therefore, the invention provides the pneumatic condensate pump driven by the air cylinder, which has a simple structure and is convenient to use. In order to achieve the above purpose, the technical scheme of the invention is that the pneumatic condensate pump driven by the air cylinder comprises a pump body storage tank, a pump cover arranged on the pump body storage tank and used for sealing the pump body storage tank, a water inlet arranged on the pump body storage tank and used for allowing condensate to flow in, and a water outlet arranged on the pump body storage tank and matched with the water inlet and used for allowing condensate to be discharged, wherein the pump cover is also provided with an air pressure control device used for controlling air inlet in the pump body storage tank to control condensate in the pump body storage tank to be discharged from the pump body storage tank or controlling air outlet in the pump body storage tank to control condensate to flow in, and the water inlet and the water outlet are also provided with an anti-backflow device matched with the air pressure control device to close the water inlet when condensate flows out of the pump body storage tank and to avoid condensate flowing out of the water outlet from the water inlet or to flow back to the pump body storage tank when condensate flows out of the water outlet. The air pressure control device comprises an air inlet device arranged on the pump cover and an exhaust device arranged on the pump cover, wherein the pump cover is also provided with a valve core connecting plate which is used for controlling the opening and closing states of the air inlet device and the exhaust device simultaneously so that the air inlet device cannot inlet air when the exhaust device exhausts or the air inlet device cannot exhaust air when the air inlet device intakes. The air inlet device comprises an air inlet valve seat which is arranged on the pump cover and communicated with an external power air source for delivering air into the pump body storage tank, and a self-closing device which is used for automatically closing the air inlet valve seat and is convenient to open when the pump body storage tank does not need air inlet is further arranged in the air inlet valve seat. The self-closing device is further improved in that the self-closing device comprises a sealing ball which can slide up and down and is arranged in the air inlet valve seat, an annula