阅读说明：本技术 一种节能内控式气动隔膜泵 (Energy-saving internal control type pneumatic diaphragm pump ) 是由 曹建波 章锋 于 2020-07-28 设计创作，主要内容包括：本发明涉及一种节能内控式气动隔膜泵,其泵体上设置有进气口P,泵体的两侧对应设置有工作腔A和工作腔B,工作腔A内设置有第一膜片而分隔成驱动腔A0和物料输送腔A1,工作腔B内设置有第二膜片而分隔成驱动腔B0和物料输送腔B1；第一膜片和第二膜片之间连接有活塞杆,进气口P与A腔工作口、B腔工作口之间设置有换向阀；进气口P处设置有节能阀,节能阀包括有阀体,该阀体上设置有进气口P1和工作口,节能阀的工作口与气动隔膜泵的进气口P相通,进气口P1和工作口之间设置有阀芯,该阀芯上连接有顶杆,顶杆与弹簧相抵,阀体内还设置有与工作口相通的控制腔。其优点在于：结构合理、紧凑,能够节约过充部分压缩空气。(The invention relates to an energy-saving internal control type pneumatic diaphragm pump, wherein a pump body is provided with an air inlet P, two sides of the pump body are correspondingly provided with a working cavity A and a working cavity B, a first diaphragm is arranged in the working cavity A to be divided into a driving cavity A0 and a material conveying cavity A1, and a second diaphragm is arranged in the working cavity B to be divided into a driving cavity B0 and a material conveying cavity B1; a piston rod is connected between the first diaphragm and the second diaphragm, and a reversing valve is arranged between the air inlet P and the working ports of the cavity A and the cavity B; an energy-saving valve is arranged at the position of the air inlet P and comprises a valve body, an air inlet P1 and a working port are arranged on the valve body, the working port of the energy-saving valve is communicated with the air inlet P of the pneumatic diaphragm pump, a valve core is arranged between the air inlet P1 and the working port, a mandril is connected to the valve core and abuts against a spring, and a control cavity communicated with the working port is further arranged in the valve body. The advantages are that: the structure is reasonable and compact, and the compressed air of the over-filling part can be saved.)

1. The utility model provides an energy-conserving interior accuse formula pneumatic diaphragm pump, including the pump body (1), the pump body (1) on be provided with air inlet P, characterized by: the two sides of the pump body (1) are correspondingly provided with a working cavity A and a working cavity B, a first diaphragm (2) is arranged in the working cavity A to be divided into a driving cavity A0 and a material conveying cavity A1, the driving cavity A0 is communicated with a working port (1a) of the cavity A, the material conveying cavity A1 is communicated with a material inlet and outlet (1B) of the cavity A, a second diaphragm (3) is arranged in the working cavity B to be divided into a driving cavity B0 and a material conveying cavity B1, the driving cavity B0 is communicated with a working port (1c) of the cavity B, and the material conveying cavity B1 is communicated with a material inlet and outlet (1d) of the cavity B;

a piston rod (4) is connected between the first diaphragm (2) and the second diaphragm (3), and a reversing valve (5) is arranged between the air inlet P and the working ports (1a, 1c) of the cavity A and the cavity B;

the pneumatic diaphragm pump is characterized in that an energy-saving valve (6) is arranged at the position of the air inlet P, the energy-saving valve (6) comprises a valve body (61), an air inlet P1 and a working port (6a) are arranged on the valve body (61), the working port (6a) of the energy-saving valve (6) is communicated with the air inlet P of the pneumatic diaphragm pump, a valve core (62) is arranged between the air inlet P1 and the working port (6a), a mandril (63) is connected to the valve core (62), the mandril (63) is abutted to a spring (64), and a control cavity (61a) communicated with the working port (6a) is further arranged in the valve body (61).

2. The energy-saving internal control type pneumatic diaphragm pump of claim 1, which is characterized in that: the other end of the spring (64) is abutted against an adjusting nut (65), an adjusting screw rod (66) is arranged at the center of the adjusting nut (65), and a hand wheel (67) is connected to the outer side of the adjusting screw rod (66).

3. The energy-saving internal control type pneumatic diaphragm pump of claim 2, which is characterized in that: the two ends of the valve body (61) are respectively and correspondingly provided with a front end cover (68) and a rear end cover (69), and a boss (68a) is convexly arranged at the center of the front end cover (68).

4. An energy-saving internal control type pneumatic diaphragm pump according to claim 3, wherein: and a first sealing ring (71) is arranged at the outlet of the working port (6 a).

5. The energy-saving internal control type pneumatic diaphragm pump of claim 4, which is characterized in that: and a second sealing ring (72) is arranged between the valve core (62) and the inner wall of the valve body (61).

6. The energy-saving internal control type pneumatic diaphragm pump of claim 5, which is characterized in that: and a third sealing ring (73) is arranged between the ejector rod (63) and the inner wall of the valve body (61).

7. The energy-saving internal control type pneumatic diaphragm pump of claim 6, which is characterized in that: and a fourth sealing ring (74) is arranged between the front end cover (68) and the inner wall of the valve body (61).

8. The energy-saving internal control type pneumatic diaphragm pump of claim 7, which is characterized in that: the valve body (61) is fixed with the pump body (1) through a screw (8).

9. The energy-saving internal control type pneumatic diaphragm pump of claim 8, wherein: two sides of the middle part of the first membrane (2) are respectively provided with a first pressing sheet (21); and second pressing sheets (31) are respectively arranged on two sides of the middle part of the second membrane (3).

10. The energy-saving internal control type pneumatic diaphragm pump of claim 9, wherein: the first diaphragm (2) and the second diaphragm (3) are correspondingly fixed at two ends of the piston rod (4) through fixing screws (41).

Technical Field

The invention relates to the technical field of pneumatic control, in particular to an energy-saving technology of a pneumatic diaphragm pump, and particularly relates to an energy-saving internal control type pneumatic diaphragm pump.

Background

The pneumatic diaphragm pump is a novel conveying machine and is the most novel pump in China at present. The compressed air is used as power source, and can be used for pumping and completely absorbing various corrosive liquids, liquids with particles, high viscosity, easy volatilization, flammability and high toxicity. Because of the above features of pneumatic diaphragm pumps, pneumatic diaphragm pumps have since their birth been invading the market for other pumps, such as: pneumatic diaphragm pumps have taken an absolutely predominant position in paint spraying and ceramic industries, while in other industries, such as environmental protection, waste water treatment, construction, pollution discharge, fine chemical industry, the market share is expanding in an unimpeded manner.

The pneumatic diaphragm pump is a volumetric pump which is powered by compressed air and changes volume due to reciprocating deformation of a diaphragm. The internal control type pneumatic diaphragm pump is characterized by that in the diaphragm pump a reversing control valve for controlling piston rod to make reciprocating movement is built-in the diaphragm pump body, and the diaphragm of the diaphragm pump can be moved to trigger the reversing action of said valve.

In order to improve productivity, a conventional air diaphragm pump generally adjusts the pressure of compressed air supplied to the air diaphragm pump to be much higher than a pressure required for a load. When the working cavity is maximum at the top end of the piston rod, the pressure is increased to the maximum value; then all the air is discharged into the air when the air moves reversely; therefore, there is a large amount of excess compressed air that enters the diaphragm pump and is discharged in the reverse motion and wasted. Therefore, the structure of the existing air-operated diaphragm pump needs to be further improved.

Disclosure of Invention

The invention aims to solve the technical problem of providing an energy-saving internal control type pneumatic diaphragm pump which is reasonable and compact in structure and can save compressed air of an over-filling part aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an energy-saving internal control type pneumatic diaphragm pump comprises a pump body, wherein an air inlet P is formed in the pump body, a working cavity A and a working cavity B are correspondingly arranged on two sides of the pump body, a first diaphragm is arranged in the working cavity A and is divided into a driving cavity A0 and a material conveying cavity A1, the driving cavity A0 is communicated with a working opening of the cavity A, the material conveying cavity A1 is communicated with a material inlet and outlet of the cavity A, a second diaphragm is arranged in the working cavity B and is divided into a driving cavity B0 and a material conveying cavity B1, the driving cavity B0 is communicated with a working opening of the cavity B, and the material conveying cavity B1 is communicated with a material inlet and outlet of the cavity;

a piston rod is connected between the first diaphragm and the second diaphragm, and a reversing valve is arranged between the air inlet P and the working ports of the cavity A and the cavity B;

an energy-saving valve is arranged at the position of the air inlet P and comprises a valve body, an air inlet P1 and a working port are arranged on the valve body, the working port of the energy-saving valve is communicated with the air inlet P of the pneumatic diaphragm pump, a valve core is arranged between the air inlet P1 and the working port, a mandril is connected to the valve core and abuts against a spring, and a control cavity communicated with the working port is further arranged in the valve body.

The optimized technical measures further comprise:

the other end of the spring is abutted against an adjusting nut, an adjusting screw rod is arranged at the center of the adjusting nut, and a hand wheel is connected to the outer side of the adjusting screw rod.

The two ends of the valve body are respectively and correspondingly provided with a front end cover and a rear end cover, and the center of the front end cover is convexly provided with a lug boss.

And a first sealing ring is arranged at the outlet of the working port.

And a second sealing ring is arranged between the valve core and the inner wall of the valve body.

And a third sealing ring is arranged between the ejector rod and the inner wall of the valve body.

And a fourth sealing ring is arranged between the front end cover and the inner wall of the valve body.

The valve body is fixed with the pump body through screws.

Two sides of the middle part of the first membrane are respectively provided with a first pressing sheet; and second pressing sheets are respectively arranged on two sides of the middle part of the second membrane.

The first diaphragm and the second diaphragm are correspondingly fixed at two ends of the piston rod through fixing screws.

The energy-saving internal control type pneumatic diaphragm pump is reasonable in structure, the first diaphragm of the working cavity A and the second diaphragm of the working cavity B of the pneumatic diaphragm pump are linked through the piston rod, and the two working cavities are switched through the arrangement of the reversing valve, so that an internal control type structure is formed, and the structure is compact; the energy-saving valve is arranged at the air inlet P, and when the charged compressed air exceeds the set pressure of the energy-saving valve, the energy-saving valve is closed, so that the phenomenon of over-charging is avoided, the over-charged compressed air is saved, and the purpose of energy saving is achieved.

Drawings

FIG. 1 is a cross-sectional structural view of the present invention;

FIG. 2 is a cross-sectional structural view of the economizer valve of FIG. 1;

FIG. 3 is a state diagram of the application of the present invention;

fig. 4 is a control schematic of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 4, which are schematic structural diagrams of the present invention,

wherein the reference numerals are: the device comprises an air inlet P, a working cavity A, a driving cavity A0, a material conveying cavity A1, a working cavity B, a driving cavity B0, a material conveying cavity B1, a pump body 1, a cavity A working port 1a, a cavity A material inlet and outlet port 1B, a cavity B working port 1c, a cavity B material inlet and outlet port 1d, a first diaphragm 2, a first pressing sheet 21, a second diaphragm 3, a second pressing sheet 31, a piston rod 4, a fixing screw 41, a reversing valve 5, an energy-saving valve 6, an air inlet P1, a working port 6a, a valve body 61, a control cavity 61a, a valve core 62, a push rod 63, a spring 64, an adjusting nut 65, an adjusting screw 66, a hand wheel 67, a front end cover 68, a boss 68a, a rear end cover 69, a first sealing ring 71, a second sealing ring 72, a third sealing ring 73, a fourth sealing ring 74.

As shown in figures 1 to 4 of the drawings,

an energy-saving internal control type pneumatic diaphragm pump comprises a pump body 1, wherein an air inlet P is formed in the pump body 1, a working cavity A and a working cavity B are correspondingly arranged on two sides of the pump body 1, a first diaphragm 2 is arranged in the working cavity A and is divided into a driving cavity A0 and a material conveying cavity A1, the driving cavity A0 is communicated with a working port 1a of the cavity A, a material conveying cavity A1 is communicated with a material inlet and outlet 1B of the cavity A, a second diaphragm 3 is arranged in the working cavity B and is divided into a driving cavity B0 and a material conveying cavity B1, a driving cavity B0 is communicated with a working port 1c of the cavity B, and a material conveying cavity B1 is communicated with a material inlet and outlet 1d of the cavity;

a piston rod 4 is connected between the first diaphragm 2 and the second diaphragm 3, and a reversing valve 5 is arranged between the air inlet P and the working ports 1a and 1c of the cavities A and B;

an energy-saving valve 6 is arranged at the position of the air inlet P, the energy-saving valve 6 comprises a valve body 61, an air inlet P1 and a working port 6a are arranged on the valve body 61, the working port 6a of the energy-saving valve 6 is communicated with the air inlet P of the pneumatic diaphragm pump, a valve core 62 is arranged between the air inlet P1 and the working port 6a, a mandril 63 is connected to the valve core 62, the mandril 63 abuts against a spring 64, and a control cavity 61a communicated with the working port 6a is further arranged in the valve body 61.