Method and construction for preventing water leakage in diaphragm type compression pump

Abstract

The invention relates to a preventing leakage water method and structure of diaphragm type pressure pump, wherein, hollow cylinders are respectively arranged on the acting zone of each piston relative to the screw holes of each balance wheel in the diaphragm sheet of the diaphragm type pressure ump. Every hollow cylinder is covered in a ladder hole of every piston pushing lump and passes through the central hole of the hollow cylinder by a fixing screw. During the screwing and fixing the screw hole of every swing wheel, the travel synchronous presses through the upper section of the hollow cylinder to expand and deform toward surroundings gradually. An interdiction structure of stopping water pressure leakage is formed between the bottom of the fixing screw head and the ladder hole top face of the piston pushing lump, thereby further preventing water pressure leakage and electrical short circuit and damage of pressure pump further after following into motor.

Description

technical field [0001] The present invention relates to a special pressure diaphragm pump for reverse osmosis water filter (reverse osmosis purification), in particular to a pressure diaphragm pump that can prevent the water pressure inside the pump body from leaking into the motor, so as to completely solve the problems caused by water seepage in existing pressure pumps. The lack of damage caused by electrical short circuit due to leakage belongs to the field of pressure pumps. Background technique [0002] Diaphragm pressure pumps for reverse osmosis water filters are currently known, such as US patents 4396357, 4610605, 5476367, 5571000, 5615597, 5626464, 5649812, 5706715, 5791882, 5816133, 6048183, 6089838, 629941 No. 6604909, 6840745 and 6892624 etc. are all, and its structure as shown in Fig. 1 to Fig. 3, is to comprise: a motor 10; One is positioned at this motor 10 output shafts (not shown on the figure) top cover seat 11, A plurality of screw holes 12 are set on th...

AI Technical Summary

Problems solved by technology

[0007] All the conventional diaphragm pressure pumps disclosed above have a serious defect. As shown in Figures 6 to 9, when the motor 10 is started to pressurize, the balance wheels 13 are in contact with the diaphragm. Therefore, when the balance wheel 13 swings and pushes forward each time, and the piston actuating area 23 of the diaphragm 20 moves, the diaphragm clamped between the piston push block 30 and the balance wheel 13 The 20 position will be stretched once (as shown by the imaginary line in Figure 8), if the rotating speed of the motor 10 is 700 revolutions per minute (700rpm), then the diaphragm 20 position will be stretched 700 times per minute, After such a high-frequency stretching action and use for a period of time, the diaphragm 20 at the piston action area 23 will gradually form an incomplete airtight seal with the bottom surface of the piston push block 30 due to the pull. As a result (as shown in FIG. 9 ), the high-pressure water Wp leaks into the output shaft of the motor 10 through the space between the fixing screw 3 and the threaded hole 14 of the balance wheel 13 , and finally causes a short circuit in the electrical circuit of the motor 10 . The entire diaphragm pressure pump is damaged and cannot be used. This major problem has not yet been solved in the manufacturing industry. Consumers can only gamble and spend the same price but not necessarily get the same service life. When the motor 10 is burnt due to water leakage and short circuit, there is also a danger of fire

[0008] Furthermore, in addition to the above-mentioned major defects, another frequently occurring water leakage location is between the pump head cover body 50 and the piston valve body 40, as shown in Figure 10, when the piston actuation area 23 of the diaphragm 20 When constantly pushed and moved by the balance wheel 13, the top surface of the outer peripheral edge of the piston valve body 40 also continuously hits the wall surface of the stepped groove 54 of the pump head cover body 50 (as shown by the black arrow in Figure 10), or Pulling away from the contact between the two, since the piston valve body 40 and the pump head cover body 50 are both rigid bodies, there is no buffer structure design between the two. After repeated collisions and pulling away from each other for a period of time, it is easy to A gap is generated, and under the action of water pressure, water will leak from the wall of the stepped groove 54 of the pump head cover 50 and the top surface of the outer peripheral edge of the piston valve body 40 to the outside of the diaphragm pressure pump, and at the same time It also indirectly forms the phenomenon of local pressure loss, which in turn leads to the reduction of the overall supercharging effect.

Images