阅读说明：本技术 一种气动隔膜泵 (Pneumatic diaphragm pump ) 是由 杨建丰 于 2020-06-18 设计创作，主要内容包括：本发明公开了一种气动隔膜泵,包括泵壳,泵壳相对的两侧设置有泵进口和泵出口；泵壳内设置有回字形的通道,通道分别连通泵出口和泵进口,且通道内设置有两个分布在泵进口两侧的两个球阀,通道内设置有两个分布在泵出口两侧的两个球阀；所述泵壳内设置有腔体,腔体连通回字形的通道；所述泵壳的两侧设置有对应腔体的泵盖；所述腔体内固定安装有泵体,泵体内固定安装有两个对称的阀芯座,两个阀芯座之间固定安装有阀芯和进气分配体；所述泵体、阀芯座和阀芯的中心贯穿且滑动安装有联接杆。本发明大大减少了漏气的量,减少了气体的使用,节约了能源,降低了成本,维护成本也大大降低。(The invention discloses a pneumatic diaphragm pump, which comprises a pump shell, wherein two opposite sides of the pump shell are provided with a pump inlet and a pump outlet; a square-back channel is arranged in the pump shell and is respectively communicated with the pump outlet and the pump inlet, two ball valves distributed on two sides of the pump inlet are arranged in the channel, and two ball valves distributed on two sides of the pump outlet are arranged in the channel; a cavity is arranged in the pump shell and is communicated with the channel shaped like a Chinese character 'hui'; pump covers corresponding to the cavities are arranged on two sides of the pump shell; the pump body is fixedly arranged in the cavity, two symmetrical valve core seats are fixedly arranged in the pump body, and a valve core and an air inlet distribution body are fixedly arranged between the two valve core seats; the centers of the pump body, the valve core seat and the valve core are penetrated and provided with a connecting rod in a sliding way. The invention greatly reduces the amount of air leakage, reduces the use of air, saves energy, reduces cost and greatly reduces maintenance cost.)

1. A pneumatic diaphragm pump comprises a pump shell, wherein a pump inlet and a pump outlet are arranged on two opposite sides of the pump shell; a square-back channel is arranged in the pump shell and is respectively communicated with the pump outlet and the pump inlet, two ball valves distributed on two sides of the pump inlet are arranged in the channel, and two ball valves distributed on two sides of the pump outlet are arranged in the channel;

a cavity is arranged in the pump shell and is communicated with the channel shaped like a Chinese character 'hui';

pump covers corresponding to the cavities are arranged on two sides of the pump shell;

the air-intake distribution valve is characterized in that a pump body is fixedly arranged in the cavity, two symmetrical valve core seats are fixedly arranged in the pump body, and a valve core and an air-intake distribution body are fixedly arranged between the two valve core seats;

the centers of the pump body, the valve core seat and the valve core are penetrated and are provided with a connecting rod in a sliding way, and an adjusting sleeve is sleeved on the connecting rod; the two ends of the connecting rod are respectively fixedly connected with the centers of the two diaphragms, and the peripheries of the diaphragms are hermetically fixed on the pump cover.

2. The pneumatic diaphragm pump of claim 1, wherein the valve core seat is provided with an air passage A and an air passage D, and the valve core is provided with an air passage B and an air passage E which are transverse, and an air passage C and an air passage F which are vertical; a first groove is formed in the middle of the adjusting sleeve, and two first bosses are symmetrically arranged on the adjusting sleeve on two sides of the first groove; the adjusting sleeves on the outer sides of the two first bosses are provided with the same second bosses, and the adjusting sleeves on the outer sides of the two second bosses are provided with the same third bosses; the height is reduced in sequence according to the first boss, the second boss and the third boss; the gas circuit C and the gas circuit F correspond to the first boss, and the gas circuit B and the gas circuit E correspond to the second boss.

3. An air operated diaphragm pump according to claim 2 wherein the inlet manifold is disposed between the two valve core seats and sealed with an O-ring seal.

4. An air operated diaphragm pump according to claim 3, wherein the valve core is located between the air inlet distributor and the valve core seat, and the air seal is performed by using a Y-shaped seal ring and a PTFE thin sleeve.

5. An air operated diaphragm pump according to claim 2, wherein the coupling rod extends through the adjustment sleeve and is sealed from the adjustment sleeve by an O-ring seal.

Technical Field

The invention relates to the field of pumps, in particular to a pneumatic diaphragm pump.

Background

At present, in the industries of chemical industry, petroleum, printing and dyeing, medicine, food, electroplating and the like, the pneumatic diaphragm pump is widely applied to conveying liquids such as petroleum, chemical and the like, and various characteristics of the media require the pneumatic diaphragm pump to be resistant to corrosion, abrasion and leakage; the pneumatic diaphragm pump is mainly used for conveying toxic and harmful media, strong acid, strong alkali, strong corrosion, flammability and explosiveness, high viscosity and particle-containing media in the production flow of enterprises such as petroleum, chemical engineering, pharmacy, printing and dyeing, electroplating, food, environmental protection and the like.

The traditional diaphragm pump has high requirements on the machining and assembling precision of each part due to a plurality of parts, and has large air leakage and can consume more gas to cause energy waste when an air source is matched.

Disclosure of Invention

The invention aims to provide a pneumatic diaphragm pump, which solves the problems of the existing products.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pneumatic diaphragm pump comprises a pump shell, wherein a pump inlet and a pump outlet are arranged on two opposite sides of the pump shell; a square-back channel is arranged in the pump shell and is respectively communicated with the pump outlet and the pump inlet, two ball valves distributed on two sides of the pump inlet are arranged in the channel, and two ball valves distributed on two sides of the pump outlet are arranged in the channel; a cavity is arranged in the pump shell and is communicated with the channel shaped like a Chinese character 'hui'; pump covers corresponding to the cavities are arranged on two sides of the pump shell; the air-intake distribution valve is characterized in that a pump body is fixedly arranged in the cavity, two symmetrical valve core seats are fixedly arranged in the pump body, and a valve core and an air-intake distribution body are fixedly arranged between the two valve core seats; the centers of the pump body, the valve core seat and the valve core are penetrated and are provided with a connecting rod in a sliding way, and an adjusting sleeve is sleeved on the connecting rod; the two ends of the connecting rod are respectively fixedly connected with the centers of the two diaphragms, and the peripheries of the diaphragms are hermetically fixed on the pump cover.

Preferably, the valve core seat is provided with an air passage A and an air passage D, and the valve core is provided with a transverse air passage B and an air passage E, and a vertical air passage C and an air passage F; a first groove is formed in the middle of the adjusting sleeve, and two first bosses are symmetrically arranged on the adjusting sleeve on two sides of the first groove; the adjusting sleeves on the outer sides of the two first bosses are provided with the same second bosses, and the adjusting sleeves on the outer sides of the two second bosses are provided with the same third bosses; the height is reduced in sequence according to the first boss, the second boss and the third boss; the gas circuit C and the gas circuit F correspond to the first boss, and the gas circuit B and the gas circuit E correspond to the second boss.

Preferably, the air inlet distributor is arranged between the two valve core seats and sealed by an O-shaped sealing ring.

Preferably, the valve core is positioned between the air inlet distributing body and the valve core seat, and the air seal is sealed by adopting a Y-shaped sealing ring and a thin polytetrafluoroethylene sleeve.

Preferably, the connecting rod penetrates through the adjusting sleeve, and the connecting rod and the adjusting sleeve are sealed through an O-shaped sealing ring.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the beneficial effects that:

the invention only uses a valve core, an adjusting sleeve, a connecting rod and a gas distributing part, needs few parts, and relies on the position staggered relation between the adjusting sleeve and the valve core for opening and closing, thus the normal work of the pump can be realized only by processing the surface, the gas leakage amount is greatly reduced, the gas use is reduced, the energy is saved, the cost is reduced, and the maintenance cost is also greatly reduced.

Drawings

FIG. 1 is an overall schematic structural view of a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a pump body according to a first embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of the release sleeve of FIG. 1;

fig. 4 is an enlarged structural distribution diagram of the a-F gas paths in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1-3, an air operated diaphragm pump comprises a pump housing having a pump inlet 8 and a pump outlet 1 disposed on opposite sides of the pump housing. The pump is internally provided with a square-shaped channel 2 and a square-shaped channel 7, the channel 2 and the channel 7 are respectively communicated with the pump outlet and the pump inlet, the channel is internally provided with two ball valves 4 distributed on two sides of the pump inlet, and the channel is internally provided with two ball valves 3 distributed on two sides of the pump outlet. A cavity is arranged in the pump shell and communicated with the channel shaped like a Chinese character 'hui'. And pump covers corresponding to the cavities are arranged on two sides of the pump shell. The pump shell, the inlet and outlet of the pump, the ball valve and the pump cover are all in the prior art, so that the working principle and the connection relation belong to the prior art and are not described in detail.

A pump body 10 is fixedly arranged in the cavity, two symmetrical valve core seats 12 are fixedly arranged in the pump body 10, and a valve core 13 and an air inlet distributing body 9 are fixedly arranged between the two valve core seats 12. The centers of the pump body, the valve core seat and the valve core are penetrated and slidably provided with a connecting rod 6, and an adjusting sleeve 11 is sleeved on the connecting rod 6. The two ends of the connecting rod 6 are respectively fixedly connected with the centers of the two diaphragms 5, and the peripheries of the diaphragms 5 are hermetically fixed on the pump cover.

As shown in fig. 4, the valve core seat is provided with an air passage a and an air passage D, and the valve core is provided with an air passage B and an air passage E which are horizontal, and an air passage C and an air passage F which are vertical. The middle part of the adjusting sleeve 11 is provided with a first groove 111, and two first bosses 110 are symmetrically arranged on the adjusting sleeve at two sides of the first groove 111. The adjusting sleeves on the outer sides of the two first bosses 110 are provided with the same second bosses 112, and the adjusting sleeves on the outer sides of the two second bosses 112 are provided with the same third bosses 113. The height is reduced in sequence according to the first boss, the second boss and the third boss; the gas circuit C and the gas circuit F correspond to the first boss, and the gas circuit B and the gas circuit E correspond to the second boss. The air path A, the air path B, the air path C, the air path D, the air path E and the air path F are respectively independent and mutually connected, and the air inlet distribution body 9 is communicated with the air paths.

High-pressure gas enters the gas distributing body, when gas enters the gas path E, the valve core 13 moves leftwards, when the valve core moves to a proper position, gas enters the gas path A, the diaphragm on the left side inflates and expands to drive the connecting rod to move leftwards, and when the diaphragm moves to a proper position, the adjusting sleeve is driven to move leftwards. When the connecting rod moves to a proper position next to the inner part, the air path in the F air path direction is opened for exhausting, the air path in the E air path direction is closed, the air path B is opened for air intake, the air path C is closed, the air path A is opened for exhausting, the air intake in the D air path direction is opened for air intake, the diaphragm 5 on the right side is inflated, and the expansion drives the connecting rod to move rightwards. So far, first stroke round is accomplished, and pneumatic diaphragm pump accomplishes first imbibition and flowing back action, then repeats in cycles for the continuous imbibition flowing back of pneumatic diaphragm pump.

The specific seal design is as follows: the air inlet distributing body is arranged between the two valve core seats and sealed by an O-shaped sealing ring. The valve core is positioned between the air inlet distributing body and the valve core seat, and the air seal is sealed by adopting a Y-shaped sealing ring and a thin polytetrafluoroethylene sleeve. The connecting rod penetrates through the adjusting sleeve, and the connecting rod and the adjusting sleeve are sealed through an O-shaped sealing ring.

The invention only uses a valve core, an adjusting sleeve, a connecting rod and a gas distributing part, needs few parts, and relies on the position staggered relation between the adjusting sleeve and the valve core for opening and closing, thus the normal work of the pump can be realized only by processing the surface, the gas leakage amount is greatly reduced, the gas use is reduced, the energy is saved, the cost is reduced, and the maintenance cost is also greatly reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.