阅读说明：本技术 一种节能外控式气动隔膜泵 (Energy-saving external 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外控式气动隔膜泵,包括有泵体,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,驱动腔A0经电磁换向阀与进气口P相通,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,驱动腔B0经电磁换向阀与进气口P相通；电磁换向阀上设置有电磁铁D1和电磁铁D2,第一膜片和第二膜片之间连接有活塞杆；工作腔A内设置有第一压力传感器,工作腔B内设置有第二压力传感器,第一压力传感器和第二压力传感器分别与控制器反馈连接,控制器与电磁铁D1、电磁铁D2控制连接。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 external control type pneumatic diaphragm pump, which 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 to be divided into a driving cavity A0 and a material conveying cavity A1, the driving cavity A0 is communicated with the air inlet P through an electromagnetic reversing valve, a second diaphragm is arranged in the working cavity B to be divided into a driving cavity B0 and a material conveying cavity B1, and the driving cavity B0 is communicated with the air inlet P through the electromagnetic reversing valve; the electromagnetic directional valve is provided with an electromagnet D1 and an electromagnet D2, and a piston rod is connected between the first diaphragm and the second diaphragm; be provided with first pressure sensor in the working chamber A, be provided with second pressure sensor in the working chamber B, first pressure sensor and second pressure sensor are connected with the controller feedback respectively, and the controller is connected with electro-magnet D1, electro-magnet D2 control. 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 outer 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 an air inlet P through an electromagnetic reversing valve (4), the material conveying cavity A1 is communicated with a cavity A material inlet/outlet (1a), 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 the air inlet P through the electromagnetic reversing valve (4), and the material conveying cavity B1 is communicated with a cavity B material inlet/outlet (1B);

the electromagnetic directional valve (4) is provided with an electromagnet D1 and an electromagnet D2, and a piston rod (5) is connected between the first diaphragm (2) and the second diaphragm (3); working chamber A in be provided with first pressure sensor (61), working chamber B in be provided with second pressure sensor (62), first pressure sensor (61) and second pressure sensor (62) respectively with controller (7) feedback connection, controller (7) and electro-magnet D1, electro-magnet D2 control connection.

2. The energy-saving external control type pneumatic diaphragm pump of claim 1, which is characterized in that: the pump body (1) comprises a center frame (11), a first cavity shell (12) is fixed on one side of the center frame (11), a first cavity cover (13) is fixed on the first cavity shell (12), a second cavity shell (14) is fixed on the other side of the center frame (11), and a second cavity cover (15) is fixed on the second cavity shell (14).

3. The energy-saving external control type pneumatic diaphragm pump of claim 2, which is characterized in that: the section of the center frame (11) is of an I-shaped structure, and the piston rod (5) penetrates through the center of the center frame (11).

4. The energy-saving external control type pneumatic diaphragm pump of claim 3, which is characterized in that: the electromagnetic directional valve (4) is a three-position five-way electromagnetic valve.

5. The energy-saving external control type pneumatic diaphragm pump of claim 4, which is characterized in that: the middle part of the first membrane (2) is provided with two first pressing sheets (21), and the two first pressing sheets (21) are flatly pressed on two sides of the first membrane (2).

6. The energy-saving external control type pneumatic diaphragm pump of claim 5, which is characterized in that: the middle part of the second membrane (3) is provided with two second pressing sheets (31), and the two second pressing sheets (31) are flatly pressed on two sides of the second membrane (3).

7. The energy-saving external control type pneumatic diaphragm pump of claim 6, which is characterized in that: the first diaphragm (2) is fixed at one end of the piston rod (5) through a first fixing screw (51), and the second diaphragm (3) is fixed at the other end of the piston rod (5) through a second fixing screw (52).

8. The energy-saving external control type pneumatic diaphragm pump of claim 7, which is characterized in that: the driving cavity A0 is arranged on the inner side of the first membrane (2), and the material conveying cavity A1 is arranged on the outer side of the first membrane (2).

9. The energy-saving external control type pneumatic diaphragm pump of claim 8, which is characterized in that: the driving cavity B0 is arranged on the inner side of the second membrane (3), and the material conveying cavity B1 is arranged on the outer side of the second membrane (3).

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 external 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 essentially a volumetric pump which takes compressed air as power and causes volume change due to reciprocating deformation of a diaphragm; the reciprocating motion of the external control type pneumatic diaphragm pump is forcibly controlled by an external signal.

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, 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 external control type pneumatic diaphragm pump which is reasonable and compact in structure and can save compressed air of an over-filled 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 external 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 the air inlet P through an electromagnetic reversing valve, the material conveying cavity A1 is communicated with a material inlet and a material 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 the air inlet P through the electromagnetic reversing valve, and the material conveying cavity B1 is communicated with the material inlet and the material;

the electromagnetic directional valve is provided with an electromagnet D1 and an electromagnet D2, and a piston rod is connected between the first diaphragm and the second diaphragm; be provided with first pressure sensor in the working chamber A, be provided with second pressure sensor in the working chamber B, first pressure sensor and second pressure sensor are connected with the controller feedback respectively, and the controller is connected with electro-magnet D1, electro-magnet D2 control.

The pump body is including the centre frame, and one side of centre frame is fixed with first chamber shell, is fixed with first chamber lid on this first chamber shell, and the opposite side of centre frame is fixed with the second chamber shell, is fixed with the second chamber lid on this second chamber shell.

The optimized technical measures further comprise:

the section of the center frame is in an I-shaped structure, and the piston rod penetrates through the center of the center frame.

The electromagnetic directional valve is a three-position five-way electromagnetic valve.

The middle part of the first membrane is provided with two first pressing sheets which are flatly pressed on two sides of the first membrane.

The middle part of the second membrane is provided with two second pressing sheets which are flatly pressed on two sides of the second membrane.

The first diaphragm is fixed at one end of the piston rod through a first fixing screw, and the second diaphragm is fixed at the other end of the piston rod through a second fixing screw.

The driving cavity a0 is disposed on the inner side of the first membrane, and the material conveying cavity a1 is disposed on the outer side of the first membrane.

The driving cavity B0 is arranged on the inner side of the second diaphragm, and the material conveying cavity B1 is arranged on the outer side of the second diaphragm.

The energy-saving external 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 electromagnetic directional valve, so that an external control type structure is formed, and the structure is compact; the pressure sensor is arranged in the working cavity to detect the real-time pressure, and when the real-time pressure exceeds the set pressure, the inflation is stopped, so that the phenomenon of over-inflation is avoided, the compressed air of the over-inflation part is saved, and the purpose of energy conservation is achieved.

Drawings

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

FIG. 2 is a cross-sectional block diagram of the pump body of FIG. 1;

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

figure 4 is a graph of the pressure cycle of the working chamber of the diaphragm pump 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: air inlet P, working chamber A, drive chamber A0, material transport chamber A1, working chamber B, drive chamber B0, material transport chamber B1, the pump body 1, A chamber business turn over material mouth 1a, B chamber business turn over material mouth 1B, centre frame 11, first chamber shell 12, first chamber lid 13, second chamber shell 14, second chamber lid 15, first diaphragm 2, first preforming 21, second diaphragm 3, second preforming 31, solenoid directional valve 4, electro-magnet D1, electro-magnet D2, piston rod 5, first set screw 51, second set screw 52, first pressure sensor 61, second pressure sensor 62, controller 7.

As shown in figures 1 to 4 of the drawings,

an energy-saving external 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 to be divided into a driving cavity A0 and a material conveying cavity A1, the driving cavity A0 is communicated with the air inlet P through an electromagnetic reversing valve 4, the material conveying cavity A1 is communicated with a material inlet and outlet 1a 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 the air inlet P through the electromagnetic reversing valve 4, and the material conveying cavity B1 is communicated with a material inlet and outlet 1B of the cavity;

the electromagnetic directional valve 4 is provided with an electromagnet D1 and an electromagnet D2, and a piston rod 5 is connected between the first diaphragm 2 and the second diaphragm 3; be provided with first pressure sensor 61 in the working chamber A, be provided with second pressure sensor 62 in the working chamber B, first pressure sensor 61 and second pressure sensor 62 are connected with controller 7 feedback respectively, and controller 7 is connected with electro-magnet D1, electro-magnet D2 control.

The pump body 1 comprises a center frame 11, a first cavity shell 12 is fixed on one side of the center frame 11, a first cavity cover 13 is fixed on the first cavity shell 12, a second cavity shell 14 is fixed on the other side of the center frame 11, and a second cavity cover 15 is fixed on the second cavity shell 14.