阅读说明：本技术 一种基于物联网的气动隔膜阀智能控制系统及其方法 (Pneumatic diaphragm valve intelligent control system and method based on Internet of things ) 是由 刘波 于 2021-11-08 设计创作，主要内容包括：本发明涉及隔膜阀智能控制领域,尤其涉及一种基于物联网的气动隔膜阀智能控制系统及其方法。提供一种流通量大、使用寿命长、密封性保持性相对稳定、便于零件提前更换的基于物联网的气动隔膜阀智能控制系统。一种基于物联网的气动隔膜阀智能控制系统,包括有阀体、阀罩、隔膜组件,阀体与阀罩螺栓连接,阀体上的流体流出端设有流量感应器,流量感应器上设置有流量模块,流量感应器与流量模块电气连接,隔膜组件设置在阀体与阀罩之间。本发明通过阀体上的弧形凹槽设计,增加了流体的流通横截面,利用连接件的设计,增大与隔膜之间的附着力并提高其使用寿命,通过现场控制面板实现流体灌装时产生的问题进行显示,并对零件的使用寿命进行提醒。(The invention relates to the field of intelligent control of diaphragm valves, in particular to an intelligent pneumatic diaphragm valve control system and method based on the Internet of things. The pneumatic diaphragm valve intelligent control system based on the Internet of things is large in circulation, long in service life, relatively stable in sealing retentivity and convenient for parts to be replaced in advance. The utility model provides a pneumatic diaphragm valve intelligence control system based on thing networking, includes valve body, valve bonnet, diaphragm assembly, valve body and valve bonnet bolted connection, and the fluid outflow end on the valve body is equipped with the flow inductor, is provided with the flow module on the flow inductor, flow inductor and flow module electrical connection, and diaphragm assembly sets up between valve body and valve bonnet. According to the invention, through the design of the arc-shaped groove on the valve body, the flow cross section of the fluid is increased, the adhesive force between the valve body and the diaphragm is increased and the service life of the valve body is prolonged by utilizing the design of the connecting piece, the problems generated during fluid filling are displayed through the field control panel, and the service life of parts is reminded.)

1. The pneumatic diaphragm valve intelligent control system based on the Internet of things is characterized by comprising a valve body (1), a valve cover (102), a diaphragm assembly and a power assembly, wherein the valve body (1) is connected with the valve cover (102) through bolts, a flow sensor is arranged at a fluid outflow end on the valve body (1), a flow module is arranged on the flow sensor, the flow sensor is electrically connected with the flow module, the diaphragm assembly is arranged between the valve body (1) and the valve cover (102), a pressure sensor is arranged on the diaphragm assembly, a pressure module is arranged on the pressure sensor, the pressure sensor is electrically connected with the pressure module, two vertical convex rails are arranged on the inner wall of the valve cover (102), the power assembly is connected to the upper end of the valve cover (102), the power assembly is communicated with a high-pressure air pipe, a two-way electromagnetic valve is arranged on the high-pressure air pipe, a control module is arranged on the two-way electromagnetic valve, the two-way electromagnetic valve, The flow module and the pressure module are respectively electrically connected with the control module, the control module is electrically connected with the field control panel, the field control panel is provided with a storage module, a warning module and a warning lamp, the storage module and the warning module are respectively electrically connected with the field control panel, and the warning lamp is electrically connected with the warning module.

2. The pneumatic diaphragm valve intelligent control system based on the Internet of things of claim 1, wherein the upper part of a circulation stop block in the valve body (1) is provided with an arc-shaped groove (101) for increasing the fluid circulation cross section, and the upper part of the valve body (1) is provided with an annular boss for preventing fluid from overflowing.

3. The pneumatic diaphragm valve intelligent control system based on the Internet of things is characterized in that a diaphragm assembly comprises a first diaphragm (2), a connecting screw (201) and a second diaphragm (203), the lower surface of the first diaphragm (2) is located on the upper surface of a valve body (1), the middle of the lower surface of the first diaphragm (2) is provided with an arc-shaped boss, the head of the connecting screw (201) is embedded in the top of the first diaphragm (2), the second diaphragm (203) is in threaded connection with a screw rod of the connecting screw (201), the second diaphragm (203) covers the first diaphragm (2), the connecting screw (201) is also embedded in the top of the second diaphragm (203), and a pressure sensor and a pressure module are located between the first diaphragm (2) and the second diaphragm (203).

4. The pneumatic diaphragm valve intelligent control system based on the Internet of things of claim 3, wherein the first diaphragm (2) is made of high-density polytetrafluoroethylene.

5. The pneumatic diaphragm valve intelligent control system based on the Internet of things of claim 3, wherein a convex block at the top of the first diaphragm (2) is in a frustum design, the first diaphragm (2) becomes thinner gradually from the middle part to the outer side, and the middle part of the lower surface of the first diaphragm (2) is provided with an arc-shaped boss.

6. The pneumatic diaphragm valve intelligent control system based on the Internet of things of claim 3, wherein a projection on the top of the second diaphragm (203) is in a frustum design, and the second diaphragm (203) becomes thinner gradually from the middle part to the outer side.

7. The pneumatic diaphragm valve intelligent control system based on the Internet of things of claim 3, wherein the head of the connecting screw (201) is designed to be six-tooth, and an annular groove (202) is formed in the connecting screw (201).

8. The pneumatic diaphragm valve intelligent control system based on the Internet of things is characterized in that the power assembly comprises a cylinder (3), a connecting block (301), a sliding block (302) and an arc-shaped bump (303), the telescopic end of the cylinder (3) is horizontally arranged in the connecting block (301) in a sliding mode, the lower surface of the connecting block (301) is fixedly connected to the upper surface of the sliding block (302), two sliding grooves are formed in the sliding block (302), the sliding grooves of the sliding block (302) are in sliding fit with a convex rail of a valve cover (102), the upper surface of the arc-shaped bump (303) is fixedly connected to the lower surface of the sliding block (302), the lower surface of the arc-shaped bump (303) is consistent with the arc of the arc-shaped groove (101), and the lower portion of the arc-shaped bump (303) is in threaded connection with a connecting screw (201) at the top of a second diaphragm (203).

9. The control method of the pneumatic diaphragm valve intelligent control system based on the Internet of things according to claim 1, characterized by comprising the following specific steps:

s1: firstly, installing an intelligent control system of a pneumatic diaphragm valve on a fluid production line, then selecting a corresponding program on a field control panel for setting according to the size of canning capacity, and setting the initial state of a first diaphragm (2) and an arc-shaped groove (101) on a valve body (1) to be a closed state;

s2: when fluid filling is carried out, firstly, a batch of empty tanks are conveyed to a preset position through a fluid production line, then, an instruction is sent to a control module through a field control panel, the control module controls a two-way electromagnetic valve to push out gas in a high-pressure gas pipe from a cylinder, a telescopic rod of the cylinder is withdrawn upwards, a first diaphragm (2) moves upwards along with the telescopic rod of the cylinder, the first diaphragm (2) moves upwards to be away from an arc-shaped groove (101), so that the medium circulation cross section of the pneumatic diaphragm valve is opened, fluid media in a filling pipeline flow out along with the medium circulation cross section, and the fluid media fall into the empty tanks to finish filling;

s3: after fluid filling is finished, the field control panel sends an instruction to the control module, the control module controls the two-way electromagnetic valve to enable gas in the high-pressure gas pipe to be pushed out from the cylinder, the telescopic rod of the cylinder extends downwards under the action of the spring in the cylinder, the first diaphragm (2) moves downwards along with the telescopic rod of the cylinder, the first diaphragm (2) moves downwards to be matched with the arc-shaped groove (101), the pneumatic diaphragm valve is closed, the flow of fluid media in a filling pipeline is blocked, and fluid filling of an empty tank is finished at the moment;

s4: then, the filled cans are conveyed to the next processing link, and then the steps S2 and S3 are repeated, and the food medium filling is carried out on the next batch of empty cans;

s5: when the steps S2 and S3 are carried out, the fluid medium passing through the pneumatic diaphragm valve is measured through the flow sensor, the measured data are transmitted to the flow module, the flow module arranges the data and transmits the data to the control module, the control module transmits the data to the field control panel, when the flow of the fluid flowing is too much or too little, the field control panel displays the information and transmits an instruction to the warning module, and the warning module enables the warning lamp to emit different colors according to the instruction so as to prompt that the too much or too little flow of the fluid flows and cause inconvenience for filling; the field control panel simultaneously stores the data into the storage module;

s6: when the steps S2 and S3 are carried out, the pressure sensor is used for recording the times of upward and downward movement of the first diaphragm (2) and the second diaphragm (203), the data are transmitted to the pressure module, the pressure module is transmitted to the control module, the control module transmits the data to the field control panel, the field control panel counts the data and stores the data into the storage module, when the use times of the first diaphragm (2) and the second diaphragm (203) reach 98% of the total use time, the field control panel displays the information and transmits the information to the warning module, and the warning module enables the warning lamp to generate corresponding light according to the information to remind the first diaphragm (2) and the second diaphragm (203) of replacement, so that subsequent fluid filling is facilitated;

s7: when the steps S2 and S3 are carried out, the control module counts the use times of the two-way electromagnetic valve, the counted data are transmitted to the control module, the control module transmits the data to the field control panel, the field control panel stores the data into the storage module, when the use times of the two-way electromagnetic valve reach 98% of the total service life times, the field control panel displays information and transmits the information to the warning module, and the warning module enables the warning lamp to generate corresponding light according to the information to remind that the two-way electromagnetic valve needs to be replaced, so that subsequent fluid filling is facilitated.

Technical Field

The invention relates to the field of intelligent control of diaphragm valves, in particular to an intelligent pneumatic diaphragm valve control system and method based on the Internet of things.

Background

In the transportation process of medium, pneumatic diaphragm valve controls the transport effect of medium, and pneumatic diaphragm valve's use operating mode is complicated, and in some high-frequency operating environment, pneumatic diaphragm valve fragile, and pneumatic diaphragm valve along with the use, the effect variation of blocking of itself influences the validity of work.

The interval between the diaphragm of current pneumatic diaphragm valve and the valve body is little, make the circulation cross section of medium diminish, the medium circulation diminishes behind the pneumatic diaphragm valve of flowing through, the influence is to the transport efficiency of medium, it is little to let the adhesive force of diaphragm deformation's connecting piece effect on the diaphragm in the current pneumatic diaphragm valve, in some high-frequency's operating mode, the connecting piece drops from the diaphragm easily, make pneumatic diaphragm valve lose the function that the control medium was carried, the life of pneumatic diaphragm valve has been shortened, and along with the use of pneumatic diaphragm valve, the shortcoming of diaphragm and the leakproofness of valve body worsen gradually, and current pneumatic diaphragm valve is at the during operation, because do not count into the number of times of use of its inside part, so can't remind and change before the part reaches life.

Therefore, the intelligent control system of the pneumatic diaphragm valve based on the Internet of things is large in throughput, long in service life, relatively stable in sealing performance and convenient for parts to be replaced in advance.

Disclosure of Invention

In order to overcome the circulation of current pneumatic diaphragm valve little, the life of pneumatic diaphragm valve is short under the high frequency operating mode, along with the user equipment leakproofness gradual deterioration of pneumatic diaphragm valve, the shortcoming, the technical problem that the part was changed can't in time be reminded to current pneumatic diaphragm valve: the pneumatic diaphragm valve intelligent control system and method based on the Internet of things are large in circulation, long in service life, relatively stable in sealing performance and convenient for parts to be replaced in advance.

The technical scheme is as follows: an intelligent control system of a pneumatic diaphragm valve based on the Internet of things comprises a valve body, a valve cover, a diaphragm assembly and a power assembly, wherein the valve body is connected with the valve cover through bolts, a flow sensor is arranged at a fluid outflow end on the valve body, a flow module is arranged on the flow sensor, the flow sensor is electrically connected with the flow module, the diaphragm assembly is arranged between the valve body and the valve cover, a pressure sensor is arranged on the diaphragm assembly, a pressure module is arranged on the pressure sensor and electrically connected with the pressure module, two vertical convex rails are arranged on the inner wall of the valve cover, the power assembly is connected to the upper end of the valve cover through bolts, the power assembly is communicated with a high-pressure air pipe, a two-way electromagnetic valve is arranged on the high-pressure air pipe, a control module is arranged on the two-way electromagnetic valve, the flow module and the pressure module are respectively electrically connected with the control module, and the control module is electrically connected with a field control panel, the field control panel is provided with a storage module, a warning module and a warning lamp, the storage module and the warning module are electrically connected with the field control panel respectively, and the warning lamp is electrically connected with the warning module.

Preferably, the upper part of the circulation stop block in the valve body is an arc-shaped groove for increasing the cross section of fluid circulation, and the upper part of the valve body is an annular boss for preventing the fluid from overflowing.

Preferably, the diaphragm assembly comprises a first diaphragm, a connecting screw and a second diaphragm, the lower surface of the first diaphragm is located on the upper surface of the valve body, the middle of the lower surface of the first diaphragm is provided with an arc-shaped boss, the head of the connecting screw is embedded at the top of the first diaphragm, the second diaphragm is in threaded connection with a screw rod of the connecting screw, the second diaphragm covers the first diaphragm, and the top of the second diaphragm is also embedded with the connecting screw.

Preferably, the first separator material is high-density polytetrafluoroethylene.

Preferably, the lug at the top of the first diaphragm is designed as a frustum, the first diaphragm becomes thinner gradually from the middle part to the outer side, and the middle part of the lower surface of the first diaphragm is provided with an arc-shaped boss.

Preferably, the projection at the top of the second diaphragm is in a frustum design, and the second diaphragm becomes thinner gradually from the middle part to the outer side.

Preferably, the head of the connecting screw is of a six-tooth design and the connecting screw is provided with an annular groove.

Preferably, the power component comprises an air cylinder, a connecting block, a sliding block and an arc-shaped convex block, the telescopic end of the air cylinder is horizontally arranged in the connecting block in a sliding manner, the lower surface of the connecting block is fixedly connected to the upper surface of the sliding block, two sliding grooves are formed in the sliding block, the sliding grooves of the sliding block are in sliding fit with the convex rails of the valve cover, the upper surface of the arc-shaped convex block is fixedly connected to the lower surface of the sliding block, the lower surface of the arc-shaped convex block is consistent with the arc of the arc-shaped groove, and the lower portion of the arc-shaped convex block is in threaded connection with the connecting screw at the top of the second diaphragm.

Preferably, the intelligent control method of the pneumatic diaphragm valve based on the Internet of things comprises the following specific steps:

s1: the device is suitable for a fluid production line, when the device is required to be used, the device is firstly installed on the fluid production line, then a corresponding program is selected on a field control panel for setting according to the size of the canning capacity, and the first diaphragm and the arc-shaped groove on the valve body of the device are in a closed state initially;

s2: when fluid filling is carried out, firstly, a batch of empty tanks are conveyed to a designated position through a fluid production line, then, an instruction is sent to a control module through a field control panel, the control module controls a two-way electromagnetic valve to push out gas in a high-pressure gas pipe in a cylinder, a telescopic rod of the cylinder is retracted upwards along with the gas, a first diaphragm moves upwards along with the telescopic rod of the cylinder, the first diaphragm moves upwards to be away from an arc-shaped groove, so that the medium circulation cross section of a pneumatic diaphragm valve is opened, fluid medium in a filling pipeline flows out along with the medium circulation cross section, and the fluid medium falls into the empty tanks to finish filling;

s3: after the fluid filling is finished, the field control panel sends an instruction to the control module, the control module controls the two-way solenoid valve to push out the gas in the high-pressure gas pipe from the cylinder, the telescopic rod of the cylinder extends downwards under the action of the internal spring of the cylinder, the first diaphragm moves downwards along with the telescopic rod of the cylinder, the first diaphragm moves downwards to be matched with the arc-shaped groove, the pneumatic diaphragm valve is closed, the flow of fluid media in the filling pipeline is blocked, and the fluid filling of an empty tank is finished at the moment;

s4: subsequently, the filled cans are conveyed to the next processing link, and then S2 and S3 are repeated to fill the empty cans of the next batch with the food medium;

s5: when the steps S2 and S3 are carried out, the fluid medium passing through the pneumatic diaphragm valve is measured through the flow sensor, the measured data are transmitted to the flow module, the flow module arranges the data and transmits the data to the control module, the control module transmits the data to the field control panel, when the flow of the fluid is too much or too little, the field control panel displays the information and transmits an instruction to the warning module, the warning module enables the warning lamp to emit different colors according to the instruction, so that the too much or too little flow of the fluid is promoted, the inconvenience is caused to filling, and the field control panel simultaneously stores the data into the storage module;

s6: when the steps S2 and S3 are carried out, the pressure sensor is used for recording the data of the times of upward and downward movement of the first diaphragm and the second diaphragm, the data are transmitted to the pressure module, the pressure module is then transmitted to the control module, the control module then transmits the data to the field control panel, the field control panel then counts the data and stores the data into the storage module, when the use times of the first diaphragm and the second diaphragm reach 98% of the total use times of the service life, the field control panel then displays the information and transmits the information to the warning module, and the warning module then enables the warning lamp to generate corresponding light according to the information to remind that the first diaphragm and the second diaphragm need to be replaced, so that subsequent fluid filling is facilitated;

s7: when the steps S2 and S3 are carried out, the control module counts the use times of the two-way electromagnetic valve, the counted data are transmitted to the control module, the control module transmits the data to the field control panel, the field control panel stores the data into the storage module, when the use times of the two-way electromagnetic valve reach 98% of the total service life times, the field control panel displays information and transmits the information to the warning module, and the warning module enables the warning lamp to generate corresponding light according to the information to remind that the two-way electromagnetic valve needs to be replaced, so that subsequent fluid filling is facilitated.

The beneficial effects are that:

1. the valve body is provided with the arc-shaped groove, so that the circulation cross section between the diaphragm and the valve body is increased, the top of the thin film of the diaphragm assembly is provided with the frustum and is subjected to a round chamfering process, the head of the connecting piece is designed into the six teeth, so that the adhesive force between the connecting piece and the diaphragm is increased, the connecting piece and the diaphragm are connected more firmly, the service life of equipment is prolonged, the middle part of the lower surface of the first diaphragm is provided with the arc-shaped boss and is matched with the arc-shaped groove, and the aim of keeping the sealing property relatively stable is fulfilled;

2. the invention utilizes the pressure module and the pressure sensor to count the use times of the first diaphragm, is convenient to replace before the first diaphragm is damaged, utilizes the matching of the flow module and the flow sensor to count the amount of fluid flowing out each time by the flow sensor, utilizes the matching of the warning module and the warning lamp to enable the warning lamp to emit different light colors, displays and reminds the problems generated during fluid filling through the field control panel, displays the problems generated during fluid filling, reminds the parts when the parts reach the service life, is convenient to replace the parts in the parts, and prevents the obstruction to the fluid filling.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a partial structural schematic diagram of the present invention.

Figure 4 is a partial cross-sectional view of a diaphragm assembly of the present invention.

Figure 5 is a schematic view of a first partial structure of a diaphragm assembly of the present invention.

FIG. 6 is a second partial schematic view of a diaphragm assembly of the present invention.

Fig. 7 is a first partial cross-sectional view of the present invention.

Fig. 8 is a second partial cross-sectional view of the present invention.

FIG. 9 is a flow chart diagram of the present invention.

Description of reference numerals: 1-valve body, 101-arc groove, 102-valve bonnet, 2-first diaphragm, 201-connecting screw, 202-annular groove, 203-second diaphragm, 3-cylinder, 301-connecting block, 302-sliding block, 303-arc lug.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in fig. 1-3, an intelligent control system of pneumatic diaphragm valve based on internet of things comprises a valve body 1, a valve cover 102, a diaphragm assembly and a power assembly, wherein the valve body 1 is connected with the valve cover 102 by bolts, a flow sensor is arranged at a fluid outflow end of the valve body 1, a flow module is arranged on the flow sensor, the flow sensor is electrically connected with the flow module, the diaphragm assembly is arranged between the valve body 1 and the valve cover 102, a pressure sensor is arranged on the diaphragm assembly, a pressure module is arranged on the pressure sensor, the pressure sensor is electrically connected with the pressure module, two vertical raised rails are arranged on the inner wall of the valve cover 102, the power assembly is connected with the upper end of the valve cover 102 by bolts, the power assembly is communicated with a high-pressure air pipe, a two-way electromagnetic valve is arranged on the high-pressure air pipe, a control module is arranged on the two-way electromagnetic valve, the flow module and the pressure module are respectively electrically connected with the control module, control module and field control panel electrical connection are provided with storage module, warning module and warning light on the field control panel, storage module and warning module respectively with field control panel electrical connection, warning light and warning module electrical connection, circulation dog upper portion in the valve body 1 is arc recess 101 setting for increase fluid circulation cross section, and 1 upper portion of valve body is the setting of annular boss, is used for preventing that the fluid from spilling over.

As shown in fig. 4-6, the diaphragm assembly includes a first diaphragm 2, a connection screw 201 and a second diaphragm 203, the lower surface of the first diaphragm 2 is located on the upper surface of the valve body 1, the middle portion of the lower surface of the first diaphragm 2 is provided with an arc-shaped boss, the head of the connection screw 201 is embedded on the top of the first diaphragm 2, the second diaphragm 203 is in threaded connection with the screw rod of the connection screw 201, the second diaphragm 203 covers the first diaphragm 2, the top of the second diaphragm 203 is also embedded with the connection screw 201, the first diaphragm 2 is made of high-density polytetrafluoroethylene, the polytetrafluoroethylene has high temperature resistance, corrosion resistance, sealing performance, high lubrication non-adhesiveness, non-toxicity, electrical insulation and good aging resistance, the boss on the top of the first diaphragm 2 for fixing the connection screw 201 is designed as a frustum, the stress applied to the top of the first diaphragm 2 by the connection screw 201 is uniformly distributed, the first diaphragm 2 becomes thinner gradually from the middle portion to the outside, the sealing device is used for prolonging the service life of the first diaphragm 2, the middle part of the lower surface of the first diaphragm 2 is provided with an arc-shaped boss and is used for increasing the sealing performance of the first diaphragm 2 and the arc-shaped groove 101 of the valve body 1, a convex block used for fixing the connecting screw 201 at the top of the second diaphragm 203 is designed as a frustum and is used for uniformly distributing stress of the connecting screw 201 acting on the top of the second diaphragm 203, the second diaphragm 203 becomes thinner gradually from the middle part to the outer side and is used for prolonging the service life of the first diaphragm 2, the head part of the connecting screw 201 is designed as six teeth, and an annular groove 202 is formed in the connecting screw 201 and is used for increasing the adhesion force of the head part of the connecting screw 201 in the second diaphragm 203.

As shown in fig. 7-8, the power assembly includes a cylinder 3, a connecting block 301, a sliding block 302 and an arc-shaped protrusion 303, the telescopic end of the cylinder 3 is horizontally slidably disposed in the connecting block 301, the lower surface of the connecting block 301 is fixedly connected to the upper surface of the sliding block 302, two sliding grooves are formed in the sliding block 302, the sliding grooves of the sliding block 302 are in sliding fit with the convex rail of the valve housing 102, the upper surface of the arc-shaped protrusion 303 is fixedly connected to the lower surface of the sliding block 302, the lower surface of the arc-shaped protrusion 303 is consistent with the arc shape of the arc-shaped groove 101, and the lower portion of the arc-shaped protrusion 303 is in threaded connection with the connecting screw 201 at the top of the second diaphragm 203.

The device is arranged on a conveying pipeline and used for controlling the conveyed fluid medium and controlling the outflow quantity of the conveyed fluid medium, initially, a first diaphragm 2 and an arc-shaped groove 101 on a valve body 1 of the device are in a closed state, when the device is used, a batch of empty tanks are firstly conveyed to a specified position through a fluid production line, then, an instruction is sent to a control module through a field control panel, the control module controls a two-way electromagnetic valve to enable gas in a high-pressure gas pipe to be pushed out and withdrawn from a cylinder, meanwhile, the control module transmits the working times of the two-way electromagnetic valve to the field control panel, the field control panel stores the working times of the two-way electromagnetic valve into a storage module, when the using times of the two-way electromagnetic valve reach 98% of the total times of the service life, the field control panel displays information and transmits the information to a warning module, and the warning module enables a warning lamp to generate corresponding light rays according to the information, reminding the two-way solenoid valve to need to change, convenient subsequent fluid filling, the high-pressure gas pipe intercommunication is on cylinder 3, and the gas in the high-pressure gas pipe flows back and forth through 3 telescopic links of pneumatic cylinder's withdrawal and stretch out, still adjusts the operating frequency of cylinder 3 according to the demand remote control terminal of production technology.

When the telescopic rod of the air cylinder 3 is retracted, the telescopic rod of the air cylinder 3 drives the sliding block 302 to slide upwards along the convex rail in the valve cover 102 through the connecting block 301, the sliding block 302 drives the arc-shaped bump 303 to move upwards, the arc-shaped bump 303 drives the protruding parts of the first diaphragm 2 and the second diaphragm 203 to move upwards, so that the lower surface of the first diaphragm 2 is far away from the arc-shaped groove 101 of the valve body 1, the medium circulation cross section of the pneumatic diaphragm valve is opened at the moment, the fluid medium in the filling pipeline flows out along with the medium, the fluid medium falls into the empty tank to complete the fluid filling work, when the field control panel sends an instruction to the control module, the control module controls the two-way electromagnetic valve to enable the gas in the high-pressure gas pipe to be pushed out through the air cylinder, the telescopic rod of the air cylinder 3 moves downwards under the action of the spring in the telescopic rod of the air cylinder 3 to reset, the telescopic rod of the air cylinder 3 drives the sliding block 302 to slide downwards along the convex rail in the valve cover 102 through the connecting block 301, and the sliding block 302 drives the arc-shaped bump 303 to move downwards, the arc-shaped bump 303 pushes the convex parts of the first diaphragm 2 and the second diaphragm 203 to be downwards concave, so that the lower surface of the first diaphragm 2 is in contact with the arc-shaped groove 101 of the valve body 1, because the lower surface of the arc-shaped bump 303 is consistent with the arc shape of the arc-shaped groove 101, and the middle part of the lower surface of the first diaphragm 2 is provided with the arc-shaped boss, so that the lower surface of the first diaphragm 2 is in close contact with the arc-shaped groove 101 of the valve body 1, the partition of circulating fluid is completed, the convex parts of the first diaphragm 2 and the second diaphragm 203 are both designed to be gradually thinned from the middle to the periphery, the first diaphragm 2 and the second diaphragm 203 are matched to form an upper-layer structure and a lower-layer structure, the first diaphragm 2 and the second diaphragm 203 are made of high-density polytetrafluoroethylene, and the design ensures that the diaphragm assembly has a longer service life under the reciprocating work of the high-frequency cylinder 3.

In the process of filling fluid, a flow sensor is used for measuring fluid media passing through a pneumatic diaphragm valve, measured data are transmitted to a flow module, the flow module arranges the data and transmits the data to a control module, the control module transmits the data to a field control panel, when the flow of the fluid is too much or too little, the field control panel displays information on a display of the field control panel and transmits the information to a warning module, the warning module enables a warning lamp to emit different colors according to the information so as to improve the too much or too little flow of the fluid, which causes inconvenience for filling, the field control panel simultaneously stores the data in a storage module, and simultaneously, the pressure sensor records the times of upward and downward movement of a first diaphragm 2 and a second diaphragm 203 and transmits the data to the pressure module, the pressure module transmits the data to the control module, the control module transmits the data to the field control panel, the field control panel counts the data and stores the data into the storage module, when the use times of the first diaphragm 2 and the second diaphragm 203 reach 98% of the total service life times, the field control panel displays the information on the display, the information is transmitted to the warning module, and the warning module enables the warning lamp to generate corresponding light according to the information to remind that the first diaphragm 2 and the second diaphragm 203 need to be replaced, so that subsequent fluid filling is facilitated.

Because the top of the second diaphragm 203 is arranged as a frustum and is subjected to a circular chamfering process, the head of the connecting screw 201 is arranged as six teeth and is embedded in the top frustum of the second diaphragm 203, the connecting screw 201 is provided with the annular groove 202 to reduce the caliber of the connecting part, the design ensures that the adhesive force of the connecting screw 201 to the second diaphragm 203 is increased, the top frustum of the first diaphragm 2 is stressed in a triangular shape, the stress between the connecting screw 201 and the first diaphragm 2 is uniform, the connection is firmer, the connecting screw 201 cannot be broken when the arc-shaped bump 303 pulls the second diaphragm 203 to deform through the connecting screw 201, the first diaphragm 2 is restored to the initial state through the connecting screw 201 by the second diaphragm 203, the top of the first diaphragm 2 is arranged as the frustum and is subjected to the circular chamfering process, the head of the connecting screw 201 is arranged as six teeth and is embedded in the top frustum of the first diaphragm 2, the annular groove 202 is arranged on the connecting screw 201 to reduce the caliber of the connecting part, above-mentioned design makes connecting screw 201 to the adhesive force grow of first diaphragm 2, and the top frustum atress of first diaphragm 2 is triangle-shaped, makes the atress between connecting screw 201 and the first diaphragm 2 even, connects more firmly, ensures that second diaphragm 203 can not break through connecting screw 201 when first diaphragm 2 of pulling produces deformation.

Referring to fig. 9, an intelligent control method for a pneumatic diaphragm valve based on the internet of things includes the following specific steps:

s1: the device is suitable for a fluid production line, when the device is required to be used, the device is firstly installed on the fluid production line, then a corresponding program is selected on a field control panel for setting according to the size of the canning capacity, and the first diaphragm 2 and the arc-shaped groove 101 on the valve body 1 of the device are in a closed state initially;

s2: when fluid filling is carried out, firstly, a batch of empty tanks are conveyed to a designated position through a fluid production line, then, an instruction is sent to a control module through a field control panel, the control module controls a two-way electromagnetic valve to push out gas in a high-pressure gas pipe from a cylinder, a telescopic rod of the cylinder is retracted upwards along with the gas, a first diaphragm 2 moves upwards along with the telescopic rod of the cylinder, the first diaphragm 2 moves upwards to be away from an arc-shaped groove 101, so that the medium circulation cross section of a pneumatic diaphragm valve is opened, a fluid medium in a filling pipeline flows out along with the medium, and the fluid medium falls into the empty tanks to finish filling;

s3: after the fluid filling is finished, the field control panel sends an instruction to the control module, the control module controls the two-way solenoid valve to push out the gas in the high-pressure gas pipe from the cylinder, the telescopic rod of the cylinder extends downwards under the action of the internal spring, the first diaphragm 2 moves downwards along with the telescopic rod of the cylinder, the first diaphragm 2 moves downwards to be matched with the arc-shaped groove 101, the pneumatic diaphragm valve is closed, the flow of fluid media in the filling pipeline is blocked, and the fluid filling of an empty tank is finished at the moment;

s4: subsequently, the filled cans are conveyed to the next processing link, and then S2 and S3 are repeated to fill the empty cans of the next batch with the food medium;

s5: when the steps S2 and S3 are carried out, the fluid medium passing through the pneumatic diaphragm valve is measured through the flow sensor, the measured data are transmitted to the flow module, the flow module arranges the data and transmits the data to the control module, the control module transmits the data to the field control panel, when the flow of the fluid is too much or too little, the field control panel displays the information and transmits an instruction to the warning module, the warning module enables the warning lamp to emit different colors according to the instruction, so that the too much or too little flow of the fluid is promoted, the inconvenience is caused to filling, and the field control panel simultaneously stores the data into the storage module;

s6: when the steps S2 and S3 are carried out, the pressure sensor is used for recording the times of upward and downward movement of the first diaphragm 2 and the second diaphragm 203, the data are transmitted to the pressure module, the pressure module is then transmitted to the control module, the control module is then transmitted to the field control panel, the field control panel counts the data and stores the data into the storage module, when the use times of the first diaphragm 2 and the second diaphragm 203 reach 98% of the total use times of the service life, the field control panel displays the information and transmits the information to the warning module, and the warning module enables the warning lamp to generate corresponding light according to the information, so that the first diaphragm 2 and the second diaphragm 203 are reminded of needing to be replaced, and subsequent fluid filling is facilitated;

s6: when the steps S2 and S3 are carried out, the control module counts the use times of the two-way electromagnetic valve, the counted data are transmitted to the control module, the control module transmits the data to the field control panel, the field control panel stores the data into the storage module, when the use times of the two-way electromagnetic valve reach 98% of the total service life times, the field control panel displays information and transmits the information to the warning module, and the warning module enables the warning lamp to generate corresponding light according to the information to remind that the two-way electromagnetic valve needs to be replaced, so that subsequent fluid filling is facilitated.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.