CN110374846B

CN110374846B - Alternate air distribution method of bidirectional pneumatic diaphragm pump

Info

Publication number: CN110374846B
Application number: CN201910632560.1A
Authority: CN
Inventors: 闵召强
Original assignee: Xinyi Xiyi High Tech Material Industry Technology Research Institute Co Ltd
Current assignee: Xinyi Xiyi High Tech Material Industry Technology Research Institute Co Ltd
Priority date: 2019-07-13
Filing date: 2019-07-13
Publication date: 2020-12-11
Anticipated expiration: 2039-07-13
Also published as: CN110374846A

Abstract

The invention provides an alternative air distribution method of a bidirectional pneumatic diaphragm pump, which comprises the following steps: firstly, a user inserts an input end of a liquid inlet pipe in a pipeline component into a source of stock solution to be pumped, and points an output end of a liquid discharge pipe to a discharge point; then, the gas distribution mechanism receives high-pressure gas of a gas source and injects the high-pressure gas into the first chamber through the first valve, the first chamber is enlarged, the second chamber is reduced, the inside of the first diaphragm chamber on the left side is converted into negative pressure and the stock solution is sucked, then, the gas distribution mechanism injects the high-pressure gas into the second chamber through the two pairs of valves, the second chamber is enlarged, the first chamber is reduced, the diaphragm compresses the first diaphragm chamber sucked with the stock solution, and the stock solution in the first diaphragm chamber is discharged; finally, the reversing mechanism drives the air distribution disc to rotate step by step, so that the first air distribution port is alternately communicated with the first air inlet butt joint hole and the first air outlet butt joint hole, the second air distribution port is alternately communicated with the second air inlet butt joint hole and the second air outlet butt joint hole, and meanwhile, the air distribution cavity is alternately communicated with the first air distribution port and the second air distribution port.

Description

Alternate air distribution method of bidirectional pneumatic diaphragm pump

Technical Field

The invention relates to a diaphragm pump, in particular to an alternative air distribution method of a bidirectional pneumatic diaphragm pump.

Background

The pneumatic diaphragm pump is a novel conveying machine, is the most novel pump in China at present, adopts compressed gas as a power source, for various corrosive liquids, liquids with particles, high-viscosity, volatile, inflammable and highly toxic liquids, all can be pumped out, the pneumatic diaphragm pump adopts nitrile rubber, chloroprene rubber, fluororubber, polytetrafluoroethylene and polytetraethylene respectively according to different liquid media, to meet the requirements of different users, is arranged in various special occasions to pump media which can not be pumped by various conventional pumps, achieves satisfactory effect, however, the air distribution principle of the existing pneumatic diaphragm pump is complex, the maintenance is difficult, and the pumping efficiency is low.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide an alternative air distribution method of the bidirectional pneumatic diaphragm pump, which has the advantages of ingenious structure, simple principle, convenient maintenance, high suction efficiency and simple air distribution mode.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

An alternate air distribution method of a bidirectional pneumatic diaphragm pump comprises the following steps:

a preparation stage;

s1: the user inserts the input end of a liquid inlet pipe in a pipeline component into a source of stock solution to be pumped, and points the output end of a liquid discharge pipe to a discharge point, two diaphragm pump bodies are arranged and are arranged symmetrically left and right along a reciprocating driving component, the reciprocating driving component is fixedly arranged between the two diaphragm pump bodies, the diaphragm pump bodies are connected and communicated with the position between the input end and the output end of the pipeline component, the input end of the pipeline component is connected and communicated with the source of the stock solution to be pumped, and the output end of the pipeline component points to the discharge point of the stock solution to be;

the reciprocating driving component comprises a piston cylinder body which is coaxially and fixedly arranged between two diaphragm covers II and is provided with openings at two ends, the piston cylinder body is in sealing connection with the diaphragm covers II, a piston matched with the piston cylinder body is arranged in the piston cylinder body, the piston divides the piston cylinder body into a first chamber and a second chamber, the volumes of the first chamber and the second chamber are variable, the first chamber is positioned at the left side of the piston, the second chamber is positioned at the right side of the piston, the first chamber and the second chamber are the same in size in an initial state, a piston rod is coaxially and fixedly arranged on the piston and positioned at the middle position of the piston rod along the axial direction, one end of the piston rod movably penetrates through one of the diaphragm covers II to extend into the diaphragm cavity II and is fixedly connected with the middle position of the diaphragm therein, the other end of the piston rod movably penetrates through the other diaphragm cover II to extend into the diaphragm cavity II, the piston cylinder body is provided with a first air valve which is always connected and communicated with the first chamber and a second air valve which is always connected and communicated with the second chamber;

the pipeline component comprises hard vertical pipelines, the vertical pipelines are provided with two tee liquid inlet pipes for connecting and communicating the input ends of the two vertical pipelines and a stock solution source, the two tee liquid outlet pipes for connecting and communicating the input ends of the two vertical pipelines and the stock solution source are respectively positioned at one side of a first diaphragm cover, the output ends of the two vertical pipelines are provided with a tee liquid outlet pipe for connecting and communicating the three, the output ends of the liquid outlet pipes point to a discharge point, the middle position of the vertical pipelines along the height direction is connected and communicated with a diaphragm cavity, a first check valve and a first check valve are arranged between the input ends of the vertical pipelines and the liquid inlet pipes and used for unidirectionally conveying stock solution in the liquid inlet pipes into the vertical pipelines, and a second check valve are arranged between the output ends of the vertical pipelines and the liquid outlet pipes and used;

(II) gas distribution stage;

s2: the gas distribution mechanism receives high-pressure gas of a gas source and injects the high-pressure gas into the first chamber from the first valve, the second valve is an exhaust port, the first chamber is enlarged, the second chamber is reduced, the interior of the first diaphragm chamber on the left side is converted into negative pressure and original liquid is sucked in, then the gas distribution mechanism injects the high-pressure gas into the second chamber through the two pairs of valves, the first valve is an exhaust port, the second chamber is enlarged, the first chamber is reduced, the diaphragm compresses the first diaphragm chamber sucked with the original liquid, and the original liquid in the first diaphragm chamber is discharged under the action of positive pressure;

the gas distribution mechanism comprises a gas distribution disc which is arranged on one side of the mounting plate and is axially arranged in parallel to the length direction of the mounting plate, the gas distribution disc is positioned between the first mounting frame and the second mounting frame and is arranged close to the first mounting frame, a first circular groove is coaxially formed in one end face of the gas distribution disc close to the second mounting frame, a first circular sealing end cover which is in sealing connection and matching with the first circular groove is coaxially arranged at an opening of the first groove, the first sealing end cover and the first groove form a gas distribution cavity, a hollow air inlet shaft which is coaxially arranged with the gas distribution disc is arranged between the second sealing end cover and the second mounting frame, one end of the hollow air inlet shaft is fixedly connected with the sealing end cover, the other end of the hollow air inlet shaft is in rotating connection;

a circular groove II is coaxially arranged on one end face of the gas distribution plate close to the first mounting frame, a circular sealing boss is coaxially and fixedly arranged at the groove bottom of the groove II, the diameter of the sealing boss is half of that of the groove II, a sleeve ring matched with the opening of the groove II is coaxially and fixedly arranged at the opening of the groove II, a fixed disc fixedly connected with the first mounting frame is coaxially sleeved in the sleeve ring, the sleeve ring is in rotating connection and matching with the fixed disc, an annular sealing groove matched with the sealing boss is coaxially arranged on one end face of the fixed disc close to the groove II, the fixed disc is in sealing rotating connection and matching with the groove bottom of the groove II, the sealing boss is sleeved in the sealing groove and forms rotating sealing connection and matching with the sealing groove, a gas distribution port I and a gas distribution port II which are axially arranged in a penetrating way are arranged on the fixed disc, the air distribution port II is positioned on the inner side of the sealing groove and a second guide pipe for connecting and communicating the air distribution port II and the valve II is arranged between the air distribution port II and the valve II;

the groove bottom of the groove II is provided with a first butt joint hole positioned on the outer side of the sealing boss, the axial direction of the first butt joint hole is parallel to the axial direction of the gas distribution disc, the first butt joint hole is provided with eight and is arranged in an array along the circumferential direction of the gas distribution disc, the first butt joint hole comprises four first air inlet butt joint holes and four first air outlet butt joint holes, the four first air inlet butt joint holes and the four first air outlet butt joint holes are arranged in a staggered manner, one end, close to the gas distribution chamber, of the first air inlet butt joint hole is connected with the gas distribution chamber, one end, close to the gas distribution chamber, of the first air outlet butt joint hole is arranged in a closed manner, an outer discharge hole I used for connecting and connecting the first air inlet butt joint hole and the first air outlet butt joint hole is alternately connected with the gas distribution port in a butt joint way, the groove bottom of the groove II is provided with a second butt joint hole positioned on the inner side, the second butt joint hole comprises four air inlet butt joint holes II and four air outlet butt joint holes II which are arranged in a staggered mode, an outer discharge pipe I with an opening arranged towards the fixed disc is coaxially embedded in the middle of the air distribution disc, an outer discharge pipe II with openings arranged at two ends is coaxially arranged in a penetrating mode in the middle of the fixed disc, the outer discharge pipe II and the outer discharge pipe are in rotating connection and matching and are communicated with each other, one end, close to the air distribution cavity, of the second air inlet butt joint hole is communicated with the air distribution cavity, an outer discharge hole II used for being communicated with the first exhaust butt joint hole is arranged between the second exhaust butt joint hole and the outer discharge pipe I, the second air inlet butt joint hole and the second exhaust butt joint hole are alternately communicated with the air distribution hole in a butt joint mode, the second air inlet butt joint hole and the first exhaust butt joint hole are aligned in the radial direction of the;

when the air distribution mechanism works, when a first air distribution port is in butt joint with one air inlet butt joint hole, at the moment, a second air distribution port is in butt joint with one air outlet butt joint hole, an air source enters the air distribution cavity through the air inlet hollow shaft, high-pressure air sequentially enters the first cavity through the first air inlet butt joint hole, the first air distribution port, the first guide pipe and the first air valve, the first cavity is gradually enlarged, the second cavity is gradually reduced, the air in the second cavity sequentially passes through the second air valve, the second guide pipe, the second air distribution port, the second air outlet butt joint hole, the second outer discharge hole, the first outer discharge pipe and the second outer discharge pipe to be discharged into the air, then the reversing mechanism drives the air inlet hollow shaft to rotate by forty-five degrees, the second air distribution port is in butt joint with one air inlet butt joint hole, at the moment, the first air distribution port is in butt joint with one air outlet butt joint hole, and high-pressure air sequentially passes through, The second guide pipe and the second valve enter the second chamber, the second chamber is gradually enlarged and the first chamber is gradually reduced, and the gas in the first chamber is discharged into the air through the first valve, the first guide pipe, the first air distribution port, the first exhaust butt joint hole and the first outer discharge hole in sequence;

(III) alternate stages;

s3: the reversing mechanism drives the gas distribution disc to gradually rotate, so that the first gas distribution port is alternately communicated with the first gas inlet butt joint hole and the first gas outlet butt joint hole, the second gas distribution port is alternately communicated with the second gas inlet butt joint hole and the second gas outlet butt joint hole, and meanwhile, the gas distribution cavity is alternately communicated with the first gas distribution port and the second gas distribution port;

the reversing mechanism comprises a reversing sleeve coaxially and fixedly sleeved on the air inlet hollow shaft, the reversing mechanism comprises guide rods erected between a first mounting frame and a second mounting frame and parallel to the length direction of the mounting plates, the guide rods are positioned between the mounting plates and the air inlet hollow shaft, the two guide rods are arranged in an up-and-down symmetrical manner, a sliding frame is movably sleeved between the two guide rods, the sliding frame is matched with the guide rods and forms sliding guide fit along the axial direction parallel to the air inlet hollow shaft, a reciprocating frame is fixedly arranged on one side of the sliding frame close to the reversing sleeve, a guide lug is movably arranged on the reciprocating frame and is as high as the axial line of the reversing sleeve, the guide lug and the reciprocating frame form sliding guide fit along the radial direction of the reversing sleeve, a spring clamping piece is arranged on the reciprocating frame, and the elasticity of the spring clamping;

the pneumatic motor is fixedly mounted on the mounting plate and is connected and communicated with an air source, an output shaft of the pneumatic motor is horizontally arranged and is perpendicular to the axial direction of the air inlet hollow shaft, a crank for movably connecting the output shaft of the pneumatic motor and the sliding frame is arranged between the output shaft of the pneumatic motor and the sliding frame, one end of the crank is coaxially and fixedly sleeved on the output shaft of the pneumatic motor, the other end of the crank is embedded on the sliding frame, and the crank and the sliding frame form sliding guide fit along the vertical direction;

the outside of the reversing sleeve is provided with a rotary guide groove, the rotary guide groove is provided with eight guide grooves and is arranged along the circumferential direction array at the position of the reversing sleeve, the guide convex blocks are movably embedded in the rotary guide groove and form sliding guide fit along the guide direction of the rotary guide groove, the rotary guide groove comprises a first guide chute and a second guide chute, the first guide chute is arranged in parallel to the axial direction of the reversing sleeve, the second guide chute is connected and communicated with the first guide chute, the second guide chute is clockwise/anticlockwise twisted by forty-five degrees along the circumferential direction at the position of the outer circular surface of the reversing sleeve, the first guide chute and the second guide chute are close to one end of the mounting frame to form a head end, the end close to the second mounting frame to form a tail end, the head end of the second guide chute and the head end of the first guide chute are deviated by forty-five degrees along the circumferential direction at the position of the reversing sleeve, the groove depth of the The first transition inclined plane for smoothly connecting the first guide sliding groove and the first communication groove is arranged between the first communication groove and the first guide sliding groove at the groove depth of the first guide sliding groove, the first guide protruding block can pass through the first communication groove and slide to the second guide sliding groove in a one-way mode from the first guide sliding groove, the first guide protruding block is embedded at the head end of the first guide sliding groove in a floating mode in an initial state, and the reciprocating stroke of the first guide protruding block is equal to the length of the first guide sliding;

a second communicating groove used for connecting and communicating the second guiding sliding groove and the first guiding sliding groove is arranged between the head end of the second guiding sliding groove and the middle position of the first adjacent guiding sliding groove along the length direction of the second guiding sliding groove, the groove depth of the second communicating groove is smaller than that of the first guiding sliding groove, a second transition inclined surface used for smoothly connecting the second communicating groove and the second guiding sliding groove is arranged between the second communicating groove and the second guiding sliding groove, and the guiding convex block can pass through the second communicating groove and slide to the head end of the first adjacent guiding sliding groove in a one;

in the working process of the reversing mechanism, the pneumatic motor rotates the driving crank and drives the sliding frame to slide along the guide rod in a reciprocating manner, the sliding frame drives the guide lug to move in a reciprocating manner, one stroke of the reciprocating movement of the guide lug drives the reversing sleeve to rotate by forty-five degrees around the self axial direction, and the concrete expression is that the guide lug slides from the head end of the first guide sliding groove to the tail end of the first guide sliding groove, then slides from the tail end of the second guide sliding groove to the head end of the second guide sliding groove and passes through the second communication groove to slide to the head end of the first adjacent guide sliding groove, in the process, the guide lug enables the reversing sleeve to rotate by forty-five degrees around the self axial direction, the reversing sleeve drives the air inlet hollow shaft to rotate synchronously, the air inlet hollow shaft drives the air distribution plate to rotate by forty-five degrees synchronously and enables the air distribution plate to alternately distribute air to the first chamber and the second chamber, the reciprocating driving component drives the diaphragm pump body to continuously pump the stock solution.

As a further optimization or improvement of the present solution.

The diaphragm pump body comprises a first diaphragm cover and a second diaphragm cover which are in a circular drum shape and have the same diameter, the first diaphragm covers which are symmetrically arranged are far away from each other, the first diaphragm cover and the second diaphragm cover are fixedly and hermetically connected and form a closed diaphragm cavity, a diaphragm compressed between the first diaphragm cover and the second diaphragm cover is arranged in the diaphragm cavity, the diaphragm divides the diaphragm cavity into the first diaphragm cavity and the second diaphragm cavity which are equal in size and have variable volumes, the first diaphragm cavity which is symmetrically arranged is far away from each other, the second diaphragm cavity which is symmetrically arranged is close to each other, and the first diaphragm cavity is connected and communicated with a pipeline component;

as a further optimization or improvement of the present solution.

The piston cylinder body is located directly over the base, is provided with the support frame that is used for connecting fixed both between piston cylinder body and the base, and the support frame is provided with two and along the axial symmetrical arrangement of piston cylinder body.

As a further optimization or improvement of the present solution.

The power device set up between piston cylinder body and base, power device includes the rectangle mounting panel of fixed mounting on the base, the mounting bracket, the length direction level of mounting panel arranges and the width direction is vertical arranges, the mounting bracket includes mounting bracket one and mounting bracket two and both along the width direction symmetrical arrangement that is on a parallel with the mounting panel, mounting bracket and mounting panel are along length direction's tip position fixed connection, set up between mounting bracket one and mounting bracket two with valve one, the valve two is connected the valve actuating mechanism of switch-on, the valve actuating mechanism is used for injecting high-pressure gas into valve one/valve two, be provided with on the mounting panel and be used for driving the valve actuating mechanism in turn to valve one, valve two carries out the reversing mechanism of gas distribution.

Compared with the prior art, the invention has the advantages of ingenious structure, simple principle and convenient maintenance, adopts one air distribution mechanism to alternately supply air to the two diaphragm pumps, drives the air distribution mechanism to alternately supply air by the pneumatic motor, and supplies power to the air distribution mechanism and the pneumatic motor by the same high-pressure air source, thereby leading the whole mechanism to be more energy-saving.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

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

Fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a connection diagram of the diaphragm pump body, the reciprocating driving member, and the piping member.

FIG. 6 is a mating view of the diaphragm pump body and reciprocating drive member.

Fig. 7 is a schematic view of the internal structure of the diaphragm pump body.

Fig. 8 is a schematic view of the internal structure of the reciprocating drive member.

FIG. 9 is a connection diagram of the reciprocating drive member and the diaphragm.

Fig. 10 is a structural schematic view of the piping member.

FIG. 11 is a view of the power drive means in cooperation with the reciprocating drive member.

FIG. 12 is a view of the power drive means in cooperation with the reciprocating drive member.

Fig. 13 is a schematic structural view of the valve train.

Fig. 14 is a partial structural view of a valve train.

Fig. 15 is a partial structural view of the valve train.

Fig. 16 is a partial structural view of a valve train.

Fig. 17 is a partial structural view of the valve train.

Fig. 18 is a partial structural view of a valve train.

Fig. 19 is a partial structural view of the valve train.

Fig. 20 is a partial structural view of the valve train.

Fig. 21 is a matching view of the reversing mechanism and the valve train.

Fig. 22 is a partial structural schematic view of the reversing mechanism.

Fig. 23 is a partial structural schematic view of the reversing mechanism.

Fig. 24 is a schematic structural view of a reversing sleeve.

Fig. 25 is a schematic structural view of a reversing sleeve.

Detailed Description

a preparation stage;

s1: a user inserts the input end of a liquid inlet pipe 134 in the pipeline member 130 into a source of a stock solution to be pumped, and points the output end of a liquid discharge pipe 135 to a discharge point, two diaphragm pump bodies 110 are arranged and are arranged symmetrically left and right along a reciprocating driving member 120, the reciprocating driving member 120 is fixedly arranged between the two diaphragm pump bodies 110, the diaphragm pump bodies 110 are connected and communicated with the position between the input end and the output end of the pipeline member 130, the input end of the pipeline member 130 is connected and communicated with the source of the stock solution to be pumped, and the output end points to the discharge point of the stock solution to be pumped;

the reciprocating driving member 120 comprises a piston cylinder 121 coaxially and fixedly arranged between two diaphragm covers 112 and arranged with openings at two ends, the piston cylinder 121 is connected with the diaphragm covers 112 in a sealing manner, a piston 122 matched with the piston cylinder 121 is arranged in the piston cylinder 121, the piston 122 divides the piston cylinder 121 into a first chamber 123 and a second chamber 124 with variable volumes, the first chamber 123 is positioned at the left side of the piston 122, the second chamber 124 is positioned at the right side of the piston 122, the first chamber 123 and the second chamber 124 are equal in size in an initial state, a piston rod 125 is coaxially and fixedly arranged on the piston 122 and the piston 122 is positioned at the middle position of the piston rod 125 along the axial direction, one end of the piston rod 121 movably penetrates through one diaphragm cover two 112 and extends into the diaphragm cavity two and is fixedly connected with the middle position of the diaphragm 113, the other end of the piston rod 121 movably penetrates through the other diaphragm cover two 112 and extends into the diaphragm cavity two and is fixedly connected with the middle position, the piston rod 121 and the diaphragm cover II 112 form sealed sliding connection and matching, and a first air valve 126 which is always connected and communicated with the chamber I123 and a second air valve 127 which is always connected and communicated with the chamber II 124 are arranged on the piston cylinder body 121;

the pipe member 130 includes a rigid vertical pipe 131, two vertical pipes 131 are provided and are respectively located at one side of the first diaphragm cover 111, a three-way liquid inlet pipe 134 for connecting and communicating the input ends of the two vertical pipelines 131 and the source of the stock solution is arranged between the input ends of the two vertical pipelines and the source of the stock solution, a three-way liquid discharge pipe 135 for connecting and communicating the two vertical pipes 131 is arranged between the output ends of the two vertical pipes and the output end of the liquid discharge pipe 135 points to a discharge point, the middle position of the vertical pipeline 131 in the height direction is communicated with the diaphragm cavity, a one-way valve I132 is arranged between the input end of the vertical pipeline 131 and the liquid inlet pipe 134, the one-way valve I132 is used for conveying stock solution in the liquid inlet pipe 134 to the vertical pipeline 131 in a one-way mode, a one-way valve II 133 is arranged between the output end of the vertical pipeline 131 and the liquid discharge pipe 135, and the one-way valve II 133 is used for conveying the stock solution in the vertical pipeline 131 to the liquid discharge pipe 135 in a one-way mode;

(II) gas distribution stage;

s2: the valve train 210 receives high-pressure gas of a gas source and injects the high-pressure gas into the first chamber 123 through the first valve 126, the second valve 127 is an exhaust port, the first chamber 123 is enlarged and the second chamber 124 is reduced, so that the inside of the first diaphragm chamber on the left side is converted into negative pressure and the stock solution is sucked in, then the valve train 210 injects the high-pressure gas into the second chamber 124 through the second valve 127, the first valve 126 is an exhaust port, the second chamber 124 is enlarged and the first chamber 123 is reduced, so that the diaphragm 113 compresses the first diaphragm chamber into which the stock solution is sucked, and the stock solution in the first diaphragm chamber is discharged under the action of positive pressure;

the gas distribution mechanism 210 comprises a gas distribution disc 211 which is arranged on one side of the mounting plate 201 and is axially arranged in parallel to the length direction of the mounting plate, the gas distribution disc 211 is positioned between the first mounting frame and the second mounting frame and is arranged close to the first mounting frame, a first circular groove is coaxially formed in one end face of the gas distribution disc 211 close to the second mounting frame, a first circular sealing end cover 213 which is in sealing connection and matching with the first circular sealing end cover is coaxially arranged at an opening of the first groove, the first sealing end cover 213 and the first groove form a gas distribution cavity 212, a gas inlet hollow shaft 214 which is coaxially arranged with the gas distribution disc 211 is arranged between the second sealing end cover 213 and the second mounting frame, one end of the gas inlet hollow shaft 214 is fixedly connected with the sealing end cover 213, the other end of the gas inlet hollow shaft 214 is;

a circular groove II 215 is coaxially formed in one end face, close to the first mounting frame, of the gas distribution disc 211, a circular sealing boss 215a is coaxially and fixedly arranged at the groove bottom of the groove II 215, the diameter of the sealing boss 215a is half of that of the groove II 215, a sleeve ring 216 matched with the opening of the groove II 215 is coaxially and fixedly arranged at the opening of the groove II 215, a fixed disc 217 fixedly connected with the first mounting frame is coaxially sleeved in the sleeve ring 216, the sleeve ring 216 is in rotating connection and matching with the fixed disc 217, an annular sealing groove 218 matched with the sealing boss 215a is coaxially formed in one end face, close to the groove II 215, of the fixed disc 217, the fixed disc 217 is in sealing rotating connection and matching with the groove bottom of the groove II 215, the sealing boss 215a is sleeved in the sealing groove 218, the sealing boss and the sealing boss form rotating sealing, the first gas distribution port 219 is positioned outside the sealing groove 218 and a first guide pipe for connecting and communicating the first gas distribution port and the first valve 126 is arranged between the first gas distribution port 219 and the first valve 126, and the second gas distribution port 220 is positioned inside the sealing groove 218 and a second guide pipe for connecting and communicating the second gas distribution port and the second valve 127 are arranged between the second gas distribution port 220 and the second valve 127;

the groove bottom of the second groove 215 is provided with a first butt joint hole 221 positioned on the outer side of the sealing boss 215a, the axial direction of the first butt joint hole 221 is parallel to the axial direction of the gas distribution disc 211, the first butt joint hole 221 is provided with eight and is arranged in an array along the circumferential direction of the gas distribution disc 211, the first butt joint hole 221 comprises four first air inlet butt joint holes 221a and four first air outlet butt joint holes 221b, the first air inlet butt joint holes 221a and the first air outlet butt joint holes 221b are arranged in a staggered mode, one end, close to the gas distribution cavity 212, of the first air inlet butt joint hole 221a is communicated with the gas distribution cavity 212, one end, close to the gas distribution cavity 212, of the first air outlet butt joint holes 221b is arranged in a closed mode, a first air outlet butt joint hole 223 used for communicating the first air inlet butt joint hole 221a and the first air outlet butt joint hole 221b is arranged between the first air outlet butt joint hole 221b and the outer circular surface of the gas distribution disc 211, the, the second butting holes 222 are eight and are arranged in an array along the circumferential direction of the gas distribution disc 211, the second butting holes 222 comprise four second inlet butting holes 222a and four second outlet butting holes 222b which are arranged in a staggered manner, a first outer discharge pipe 224 with an opening arranged towards the fixed disc 217 is coaxially embedded in the middle of the gas distribution disc 211, a second outer discharge pipe 226 with two ends arranged in an opening manner is coaxially arranged in the middle of the fixed disc 217 in a penetrating manner, the second outer discharge pipe 226 and the first outer discharge pipe 224 are rotatably connected and matched and are communicated with each other, one end of the second inlet butting holes 222a close to the gas distribution chamber 212 is connected and communicated with the gas distribution chamber 212, a second outer discharge hole 225 for connecting and communicating the second outer discharge pipe 224 is arranged between the second inlet butting holes 222b and the first outer discharge pipe 224, the second inlet butting holes 222a and the second outlet butting holes 222b are alternately in butting and communicated with the second gas distribution holes 220, and the second inlet butting holes 222a and the first outlet butting holes, the second exhaust butt joint hole 222b and the first intake butt joint hole 221 are aligned along the radial direction of the gas distribution plate 211;

in the working process of the valve actuating mechanism 210, when the first air distribution port 219 is in butt joint with the first air inlet butt joint hole 221a, at this time, the second air distribution port 220 is in butt joint with the second air outlet butt joint hole 222b, the hollow air inlet shaft 214 enters an air distribution cavity 212 from an air source, high-pressure air sequentially enters the first chamber 123 through the first air inlet butt joint hole 221a, the first air distribution port 219, the first guide pipe and the first air valve 126, the first chamber 123 is gradually increased, the second chamber 124 is gradually decreased, air in the second chamber 124 is sequentially discharged into the air through the second air valve 127, the second guide pipe, the second air distribution port 220, the second air outlet butt joint hole 222b, the second outer discharge hole 225, the first outer discharge pipe 224 and the second outer discharge pipe 226, then the reversing mechanism 230 drives the hollow air inlet shaft 214 to rotate for forty-five degrees, so that the second air distribution port 220 is in butt joint with the second air inlet butt joint hole 222a, at this time, the first air distribution port 219 is in butt joint with the, the high-pressure gas enters the second chamber 124 through the second gas inlet butt joint hole 222a, the second gas distribution opening 220, the second guide pipe and the second gas gate 127 in sequence, the second chamber 124 is gradually increased, the first chamber 123 is gradually decreased, and the gas in the first chamber 123 is discharged into the air through the first gas gate 126, the first guide pipe, the first gas distribution opening 219, the first gas exhaust butt joint hole 221b and the first gas exhaust hole 223 in sequence;

(III) alternate stages;

s3: the reversing mechanism 230 drives the air distribution disc 211 to rotate step by step, so that the first air distribution port 219 is alternately communicated with the first air inlet butt joint hole 221a and the first air outlet butt joint hole 221b, the second air distribution port 220 is alternately communicated with the second air inlet butt joint hole 222a and the second air outlet butt joint hole 222b, and meanwhile, the air distribution cavity 212 is alternately communicated with the first air distribution port 219 and the second air distribution port 220;

the reversing mechanism 230 includes a reversing sleeve 240 coaxially and fixedly sleeved on the air intake hollow shaft 214, the reversing mechanism 230 comprises guide rods 232 erected between a first mounting frame and a second mounting frame and parallel to the length direction of the mounting plate 201, the guide rods 232 are located between the mounting plate 201 and the air inlet hollow shaft 214, the two guide rods 232 are arranged in an up-down symmetrical mode, a sliding frame 233 is movably sleeved between the two guide rods 232, the sliding frame 233 is matched with the guide rods 232 and forms sliding guide fit along the axial direction parallel to the air inlet hollow shaft 214, a reciprocating frame 235 is fixedly arranged on one side, close to a reversing sleeve 240, of the sliding frame 233, a guide lug 236 is movably arranged on the reciprocating frame 235, the height of the guide lug 236 is equal to that of the axis of the reversing sleeve 240, the guide lug 236 and the reciprocating frame 235 form sliding guide fit along the radial direction of the reversing sleeve 240, a spring clamping piece 237 is arranged on the reciprocating frame 235, and the elastic force of the;

the mounting plate 201 is fixedly provided with a pneumatic motor 231, the pneumatic motor 231 is connected and communicated with an air source, an output shaft of the pneumatic motor 231 is horizontally arranged and is perpendicular to the axial direction of the air inlet hollow shaft 214, a crank 234 for movably connecting the pneumatic motor 231 and the sliding frame 233 is arranged between the output shaft of the pneumatic motor 231 and the sliding frame 233, one end of the crank 234 is coaxially and fixedly sleeved on the output shaft of the pneumatic motor 231, the other end of the crank 234 is embedded on the sliding frame 233, and the pneumatic motor 231 and the sliding frame 233 form sliding guide fit;

the outside of the reversing sleeve 240 is provided with a rotating guide groove, the rotating guide groove is provided with eight guide grooves which are arranged in an array manner along the circumferential direction of the reversing sleeve 240, the guide convex block 236 is movably embedded in the rotating guide groove and forms sliding guide fit along the guide direction of the rotating guide groove, the rotating guide groove comprises a first guide chute 241 which is arranged in parallel with the axial direction of the reversing sleeve 240 and a second guide chute 242 which is connected and communicated with the first guide chute 241, the second guide chute 242 is clockwise/anticlockwise twisted for forty-five degrees along the circumferential direction of the outer circular surface of the reversing sleeve 240, one ends of the first guide chute 241 and the second guide chute 242, which are close to the mounting frame, are head ends, one ends of the first guide chute 242 and the second guide chute 242 are tail ends, the head ends of the second guide chute 242 and the head end of the first guide chute 241 deviate for forty-five degrees, a first communicating groove 243 for connecting and communicating the first guiding sliding groove 242 and the second guiding sliding groove 241 is arranged between the tail end of the first guiding sliding groove 242 and the tail end of the first guiding sliding groove 241, the groove depth of the first communicating groove 243 is smaller than that of the first guiding sliding groove 241, a first transition inclined surface 245 for smoothly connecting the first guiding sliding groove 243 and the second guiding sliding groove 241 is arranged between the first communicating groove 243 and the first guiding sliding groove 241, the guiding convex block 236 can pass through the first communicating groove 243 and slide to the second guiding sliding groove 242 in a one-way mode from the first guiding sliding groove 241, the guiding convex block 236 is embedded at the head end of the first guiding sliding groove 241 in a floating mode in;

a second communicating groove 244 for connecting and communicating the head end of the second guiding chute 242 and the middle position of the adjacent first guiding chute 241 along the length direction of the second guiding chute 241 is arranged between the head end of the second guiding chute 242 and the middle position of the adjacent first guiding chute 241, the groove depth of the second communicating groove 244 is smaller than that of the first guiding chute 241, a second transition inclined surface 246 for smoothly connecting the second communicating groove 244 and the second guiding chute 242 is arranged between the second communicating groove 244 and the second guiding chute 242, and the guiding convex block 236 can pass through the second communicating groove 244 and slide to the head end of the adjacent first guiding chute 241 in;

during the operation of the reversing mechanism 230, the pneumatic motor 231 rotates the driving crank 234 and drives the sliding frame 233 to slide back and forth along the guiding rod 232, the sliding frame 233 drives the guiding protrusion 236 to move back and forth, one stroke of the back and forth movement of the guiding protrusion 236 drives the reversing sleeve 240 to rotate forty-five degrees around its own axial direction, which is embodied in that the guiding protrusion 236 slides from the head end of the first guiding chute 241 to its tail end, then slides from the tail end of the second guiding chute 242 to its head end, and slides to the head end of the first guiding chute 241 through the second communicating slot 244, in the process, the guiding protrusion 236 causes the reversing sleeve 240 to rotate forty-five degrees around its own axial direction, the reversing sleeve 240 drives the air inlet hollow shaft 214 to rotate synchronously, the air inlet hollow shaft 214 drives the air distribution plate 211 to rotate forty-five degrees synchronously, and the air distribution plate 211 alternately distributes air to the first chamber 123 and the second chamber 124, the reversing sleeve 240 rotates step by step, and the gas distribution disc 211 distributes gas to the first chamber 123 and the second chamber 124 continuously and alternately, so that the reciprocating driving member 120 drives the diaphragm pump body 110 to pump the stock solution continuously.

A motor-assisted reversing air-operated bidirectional diaphragm pump comprises a base 100, a diaphragm pump body 110 and a reciprocating driving member 120 are arranged on the base 100, the diaphragm pump comprises a pipeline member 130 and a power device 200, wherein two diaphragm pump bodies 110 are arranged and are arranged symmetrically left and right along a reciprocating driving member 120, the reciprocating driving member 120 is fixedly arranged between the two diaphragm pump bodies 110, the diaphragm pump bodies 110 are communicated with the positions between the input end and the output end of the pipeline member 130, the input end of the pipeline member 130 is communicated with the source of the pumping stock solution, the output end points to the discharge point of the pumping stock solution, the diaphragm pump bodies 110 are used for sucking the stock solution at the input end of the pipeline member 130 through negative pressure and discharging the sucked stock solution from the output end of the pipeline member 130 through positive pressure, the reciprocating driving member 120 is used for driving the two diaphragm pump bodies 110 to alternately suck and discharge the stock solution, and the power device 200 is used for providing motive power for the reciprocating driving.

The diaphragm pump body 110 comprises a first diaphragm cover 111 and a second diaphragm cover 112 which are in a round drum shape and have the same diameter, the first diaphragm covers 111 which are symmetrically arranged are arranged far away from each other, the first diaphragm covers 111 and the second diaphragm covers 112 are fixedly and hermetically connected to form a closed diaphragm cavity, a diaphragm 113 which is tightly pressed between the first diaphragm covers 111 and the second diaphragm covers 112 is arranged in the diaphragm cavity, the diaphragm 113 divides the diaphragm cavity into a first diaphragm cavity and a second diaphragm cavity which are equal in size in an initial state, the volumes of the first diaphragm cavity and the second diaphragm cavity are variable, the first diaphragm cavities which are symmetrically arranged are arranged far away from each other, the second diaphragm cavities which are symmetrically arranged are arranged close to each other, the first diaphragm cavities are connected and communicated with a pipeline member 130, the left and right movement of the diaphragm 113 is driven by a reciprocating driving member 120, so that the air pressure in the first diaphragm cavities is reduced or increased, raw liquid is sucked, and the air pressure in the first diaphragm cavities is, discharging the sucked stock solution.

The reciprocating driving member 120 comprises a piston cylinder 121 coaxially and fixedly arranged between two diaphragm covers 112 and arranged with openings at two ends, the piston cylinder 121 is connected with the diaphragm covers 112 in a sealing manner, a piston 122 matched with the piston cylinder 121 is arranged in the piston cylinder 121, the piston 122 divides the piston cylinder 121 into a first chamber 123 and a second chamber 124 with variable volumes, the first chamber 123 is positioned at the left side of the piston 122, the second chamber 124 is positioned at the right side of the piston 122, the first chamber 123 and the second chamber 124 are equal in size in an initial state, a piston rod 125 is coaxially and fixedly arranged on the piston 122 and the piston 122 is positioned at the middle position of the piston rod 125 along the axial direction, one end of the piston rod 121 movably penetrates through one diaphragm cover two 112 and extends into the diaphragm cavity two and is fixedly connected with the middle position of the diaphragm 113, the other end of the piston rod 121 movably penetrates through the other diaphragm cover two 112 and extends into the diaphragm cavity two and is fixedly connected with the middle position, the piston rod 121 and the diaphragm cover II 112 form a sealed sliding connection fit, in order to enable the piston 122 to slide left and right along the piston cylinder 121, a first air valve 126 which is always connected and communicated with the chamber I123 and a second air valve 127 which is always connected and communicated with the chamber II 124 are arranged on the piston cylinder 121, high-pressure gas is alternately injected into the chamber II 124 from the first air valve 126 to the chamber I123, the second air valve 127 to the chamber II 124, the piston 122 is slid left and right, and the piston rod 125 is driven to move.

Specifically, in order to support the reciprocating driving member 120, the piston cylinder 121 is located right above the base 100, a support frame 101 for connecting and fixing the piston cylinder 121 and the base 100 is disposed between the piston cylinder 121 and the base 100, and the two support frames 101 are disposed and symmetrically arranged along the axial direction of the piston cylinder 121.

The pipeline member 130 comprises a rigid vertical pipeline 131, the vertical pipeline 131 is provided with two three-way liquid inlet pipes 134 which are respectively positioned at one side of the first diaphragm cover 111, in order to facilitate the connection and the communication between the two vertical pipelines 131 and a source of stock solution, a three-way liquid discharge pipe 135 which is used for connecting and communicating the two vertical pipelines 131 is arranged between an input end and the source of the stock solution, in order to facilitate the output of the stock solution pumped by the two vertical pipelines 131 to a discharge point, a three-way liquid discharge pipe 135 which is used for connecting and communicating the two vertical pipelines 131 is arranged between output ends of the two vertical pipelines 131, the output end of the liquid discharge pipe 135 points to the discharge point, in order to enable the stock solution to flow unidirectionally from the input end to the output end of the vertical pipeline 131, the middle position of the vertical pipeline 131 in the height direction is connected and communicated with the diaphragm cavity, a one-way valve 132 is arranged between the input end of the vertical pipeline 131 and the liquid, a second check valve 133 is arranged between the output end of the vertical pipeline 131 and the drain pipe 135, and the second check valve 133 is used for unidirectionally conveying the stock solution in the vertical pipeline 131 to the drain pipe 135.

In the process that the reciprocating driving member 120 drives the diaphragm pump body 110 to pump the raw liquid, specifically, the power device 200 injects high-pressure gas into the first chamber 123 through the first valve 126, the second valve 127 is an exhaust port, the air pressure in the first chamber 123 gradually increases to slide the piston 122 rightward, the first chamber 123 increases and the second chamber 124 decreases, the piston 122 drives the piston rod 125 to slide rightward and pull the diaphragm 113 on the left side to move synchronously, so that the inside of the first diaphragm chamber on the left side is changed into negative pressure, at this time, the first check valve 132 is automatically opened under the action of the negative pressure, the raw liquid is sucked into the first diaphragm chamber and the vertical pipe 131 under the action of the negative pressure until the negative pressure is neutralized, at this time, the first check valve 132 is automatically closed, then, the power device 200 injects high-pressure gas into the second chamber 124 through the second valve 127, and the first valve 126 is an exhaust port, the air pressure in the second chamber 124 gradually increases to slide the piston 122 leftward, the second chamber 124 is enlarged and the first chamber 123 is reduced, the piston 122 drives the piston rod 125 to slide leftwards and push the diaphragm 113 positioned on the left side to move synchronously, so that the diaphragm 113 compresses the first diaphragm chamber sucked with the primary liquid and increases the pressure of the primary liquid to positive pressure, at the moment, the second one-way valve 133 is automatically opened under the action of the positive pressure, the primary liquid in the first diaphragm chamber is discharged under the action of the positive pressure, the reciprocating operation is carried out in this way, the primary liquid at the source is pumped to a discharge point, one of the first diaphragm chambers sucks the primary liquid under negative pressure, the other diaphragm chamber discharges the primary liquid under positive pressure, one of the first diaphragm chambers discharges the primary liquid under positive pressure, and the other diaphragm chamber sucks the primary liquid under negative pressure.

In order to alternately inject high-pressure gas into the first chamber 123 and the second chamber 124, the power device 200 is disposed between the piston cylinder 121 and the base 100, the power device 200 includes a rectangular mounting plate 201 fixedly mounted on the base 100, a mounting frame 202, the mounting plate 201 is horizontally arranged in the length direction and vertically arranged in the width direction, the mounting frame 202 includes a first mounting frame and a second mounting frame and symmetrically arranged in the width direction parallel to the mounting plate 201, the mounting frame 202 is fixedly connected with the mounting plate 201 at the end position in the length direction, a first valve 126 is erected between the first mounting frame and the second mounting frame, the valve II 127 is connected and communicated with a valve mechanism 210, the valve mechanism 210 is used for injecting high-pressure gas into the valve I126/the valve II 127, and a reversing mechanism 230 used for driving the valve mechanism 210 to alternately distribute the gas to the valve I126 and the valve II 127 is arranged on the mounting plate 201.

Specifically, the air distribution mechanism 210 comprises an air distribution disc 211 which is arranged on one side of the mounting plate 201 and is axially arranged in parallel to the length direction of the mounting plate, the air distribution disc 211 is positioned between the first mounting frame and the second mounting frame and is arranged close to the first mounting frame, a first circular groove is coaxially arranged on one end surface of the air distribution disc 211 close to the second mounting frame, a first circular sealing end cover 213 which is in sealing connection and matching with the first groove is coaxially arranged at the opening of the first groove, the sealing end cover 213 and the first groove form an air distribution cavity 212, an air inlet hollow shaft 214 which is coaxially arranged with the air distribution disc 211 is arranged between the sealing end cover 213 and the second mounting frame, one end of the air inlet hollow shaft 214 is fixedly connected with the sealing end cover 213, the other end of the air inlet hollow shaft is in rotating connection and matching with the second mounting frame, the air outlet end of the air inlet hollow shaft 214 is connected, and the alternating distribution of the gas in the first chamber 123 and the gas in the second chamber 124 is realized.

More specifically, when the high-pressure gas is injected into the first chamber 123, the second chamber 124 needs to be communicated with the outside, and when the high-pressure gas is injected into the second chamber 124, the first chamber 123 needs to be communicated with the outside, for this reason, a circular groove II 215 is coaxially formed in one end surface of the gas distribution plate 211 close to the first mounting frame, a circular sealing boss 215a is coaxially and fixedly arranged at the groove bottom of the groove II 215, the diameter of the sealing boss 215a is half of that of the groove II 215, a sleeve ring 216 matched with the opening of the groove II 215 is coaxially and fixedly arranged at the opening of the groove II 215, a fixed plate 217 fixedly connected with the first mounting frame is coaxially sleeved in the sleeve ring 216, the sleeve ring 216 is rotatably connected and matched with the fixed plate 217, an annular sealing groove 218 matched with the sealing boss 215a is coaxially formed in one end surface of the fixed plate 217 close to the groove II 215, the fixed plate 217, the sealing boss 215a is sleeved in the sealing groove 218 and in rotary sealing connection and matching with the sealing boss, a first air distribution port 219 and a second air distribution port 220 which are arranged in a penetrating mode along the axial direction of the fixing disc 217 are formed in the fixing disc 217, the first air distribution port 219 is located on the outer side of the sealing groove 218 and is provided with a first guide pipe used for connecting and communicating the first air distribution port 219 and the first air valve 126, the second air distribution port 220 is located on the inner side of the sealing groove 218 and is provided with a second guide pipe used for connecting and communicating the second air valve 127, and alternating air distribution of the first chamber 123 and the second chamber 124 is achieved by enabling the air distribution cavity 212 to be alternately connected and communicated.

More specifically, in order to facilitate the gas distribution and the gas release of the first valve 126, the groove bottom of the second groove 215 is provided with a first abutting hole 221 located outside the sealing boss 215a, the axial direction of the first abutting hole 221 is parallel to the axial direction of the gas distribution disc 211, the first abutting hole 221 is provided with eight abutting holes and is arranged in an array along the circumferential direction of the gas distribution disc 211, the first abutting hole 221 comprises four first gas inlet abutting holes 221a and four first gas outlet abutting holes 221b which are arranged in a staggered manner, one end of the first gas inlet abutting hole 221a close to the gas distribution chamber 212 is communicated with the gas distribution chamber 212, one end of the first gas outlet abutting hole 221b close to the gas distribution chamber 212 is arranged in a closed manner, an outer first gas outlet hole 223 used for connecting and communicating the first gas outlet hole 223 is arranged between the first gas outlet abutting hole 221b and the outer circumferential surface of the gas distribution disc 211, the first gas inlet abutting hole 221a, in order to facilitate air distribution and air release of the second valve 127, the groove bottom of the second groove 215 is provided with two abutting holes 222 positioned on the inner side of the sealing boss 215a, the axial direction of the two abutting holes 222 is parallel to the axial direction of the air distribution disc 211, the eight abutting holes 222 are arranged in an array manner along the circumferential direction of the air distribution disc 211, the two abutting holes 222 comprise four air inlet abutting holes 222a and four air outlet abutting holes 222b which are arranged in a staggered manner, an outer discharge pipe 224 with an opening arranged towards the fixed disc 217 is coaxially embedded in the middle of the air distribution disc 211, an outer discharge pipe 226 with two ends arranged in an opening manner is coaxially arranged in the middle of the fixed disc 217 in a penetrating manner, the outer discharge pipe 226 and the outer discharge pipe 224 are rotatably connected and matched and mutually communicated, one end of the air inlet abutting hole 222a close to the air distribution chamber 212 is communicated with the air distribution chamber 212, an outer discharge hole 225 for connecting and communicating the two ends is arranged between the outer discharge abutting holes 222b, the second air inlet butt joint hole 222a and the second air outlet butt joint hole 222b are alternately in butt joint with the second air distribution hole 220, in order to alternately distribute air to the first air valve 126 and the second air valve 127, the second air inlet butt joint hole 222a and the first air outlet butt joint hole 221b are aligned along the radial direction of the air distribution disc 211, the second air outlet butt joint hole 222b and the first air inlet butt joint hole 221 are aligned along the radial direction of the air distribution disc 211, and the air distribution mechanism 210 alternately distributes air to the first air valve 126 and the second air valve 127 by gradually rotating the air distribution disc 211 with a single rotation angle of forty-five degrees.

In the working process of the valve actuating mechanism 210, when the first air distribution port 219 is in butt joint with the first air inlet butt joint hole 221a, at this time, the second air distribution port 220 is in butt joint with the second air outlet butt joint hole 222b, the hollow air inlet shaft 214 enters an air distribution cavity 212 from an air source, high-pressure air sequentially enters the first chamber 123 through the first air inlet butt joint hole 221a, the first air distribution port 219, the first guide pipe and the first air valve 126, the first chamber 123 is gradually increased, the second chamber 124 is gradually decreased, air in the second chamber 124 is sequentially discharged into the air through the second air valve 127, the second guide pipe, the second air distribution port 220, the second air outlet butt joint hole 222b, the second outer discharge hole 225, the first outer discharge pipe 224 and the second outer discharge pipe 226, then the reversing mechanism 230 drives the hollow air inlet shaft 214 to rotate for forty-five degrees, so that the second air distribution port 220 is in butt joint with the second air inlet butt joint hole 222a, at this time, the first air distribution port 219 is in butt joint with the, high-pressure gas enters the second chamber 124 through the second gas inlet butt joint hole 222a, the second gas distribution hole 220, the second guide pipe and the second gas gate 127 in sequence, the second chamber 124 is gradually increased, the first chamber 123 is gradually decreased, the gas in the first chamber 123 is discharged into the air through the first gas gate 126, the first guide pipe, the first gas distribution hole 219, the first gas exhaust butt joint hole 221b and the first gas exhaust hole 223 in sequence, the reversing mechanism 230 drives the hollow gas inlet shaft 214 to rotate gradually, and the gas distribution disc 211 performs alternating gas distribution and gas release on the first chamber 123 and the second chamber 124.

In order to drive the air inlet hollow shaft 214 to rotate step by step, the reversing mechanism 230 comprises a reversing sleeve 240 coaxially and fixedly sleeved on the air inlet hollow shaft 214, the reversing sleeve 240 is driven to rotate step by step to realize the step by step rotation of the air inlet hollow shaft 214, in order to drive the reversing sleeve 240 to rotate step by step, the reversing mechanism 230 comprises a guide rod 232 erected between a first mounting frame and a second mounting frame and parallel to the length direction of the mounting plate 201, the guide rod 232 is positioned between the mounting plate 201 and the air inlet hollow shaft 214, the guide rod 232 is provided with two guide rods which are arranged symmetrically up and down, a sliding frame 233 is movably sleeved between the two guide rods 232, the sliding frame 233 is matched with the guide rod 232 and forms sliding guide fit along the axial direction parallel to the air inlet hollow shaft 214, a reciprocating frame 235 is fixedly arranged on one side of the sliding frame 233 close to the reversing sleeve 240, a guide lug 236 is movably arranged, the guiding convex block 236 and the reciprocating frame 235 form sliding guiding fit along the radial direction of the reversing sleeve 240, the reciprocating frame 235 is provided with a spring clamping piece 237, the elastic force of the spring clamping piece 237 pushes the guiding convex block 236 to be attached to the reversing sleeve 240 all the time, and the guiding convex block 236 reciprocates along the axial direction parallel to the guiding rod 232 to realize the gradual rotation of the reversing sleeve 240.

Specifically, in order to drive the guide lug 236 to reciprocate along the axial direction parallel to the guide rod 232, the mounting plate 201 is fixedly provided with the pneumatic motor 231, the pneumatic motor 231 is connected and communicated with the air source, the output shaft of the pneumatic motor 231 is horizontally arranged and perpendicular to the axial direction of the air inlet hollow shaft 214, a crank 234 for movably connecting the output shaft of the pneumatic motor 231 and the sliding frame 233 is arranged between the output shaft of the pneumatic motor 231 and the sliding frame 233, one end of the crank 234 is coaxially and fixedly sleeved on the output shaft of the pneumatic motor 231, the other end of the crank 234 is embedded on the sliding frame 233 and forms sliding guide fit along the vertical direction, the sliding frame 233 is driven to continuously rotate by the pneumatic motor 231, and the sliding frame 233 reciprocates along the guide rod 232, so that the guide lug 236 is driven to reciprocate.

Specifically, in order to convert the reciprocating motion potential energy of the guide projection 236 into the rotation potential energy of the reversing sleeve 240, a rotation guide slot is arranged outside the reversing sleeve 240, the rotation guide slot is provided with eight guide slots and is arranged in an array along the circumferential direction of the reversing sleeve 240, the guide projection 236 is movably embedded in the rotation guide slot and forms sliding guide fit along the guide direction thereof, the rotation guide slot comprises a first guide slot 241 arranged parallel to the axial direction of the reversing sleeve 240 and a second guide slot 242 connected and communicated with the first guide slot 241, the second guide slot 242 is twisted clockwise/counterclockwise by forty-five degrees along the circumferential direction of the outer circumferential surface of the reversing sleeve 240, one end of the first guide slot 241 and the second guide slot 242 close to the mounting frame is a head end, one end of the second guide slot 242 close to the mounting frame is a tail end, the head end of the second guide slot 242 and the head end of the first guide slot 241 are deviated, the groove depth of the second guide sliding groove 242 is greater than that of the first guide sliding groove 241, a first communicating groove 243 for connecting and communicating the first guide sliding groove 242 and the second guide sliding groove 241 is arranged between the tail end of the second guide sliding groove 242 and the tail end of the first guide sliding groove 241, the groove depth of the first communicating groove 243 is smaller than that of the first guide sliding groove 241, a first transition inclined surface 245 for smoothly connecting the first communicating groove 243 and the first guide sliding groove 241 is arranged between the first communicating groove 243 and the first guide sliding groove 241, the guide lug 236 can pass through the first communicating groove 243 and slide from the first guide sliding groove 241 to the second guide sliding groove 242 in a one-way manner, the guide lug 236 is embedded at the head end of the first guide sliding groove 241 in an initial state, the, the guide protrusion 236 reciprocates by a stroke to slide from the head end of the guide chute one 241 to the tail end thereof, then, the second guide sliding groove 242 slides from the tail end to the head end, and in the process, the reversing sleeve 240 rotates forty-five degrees around the self-axis.

More specifically, in order to enable the reversing sleeve 240 to continuously and gradually rotate, a communicating groove two 244 for connecting and connecting the head end of the second guide sliding groove 242 and the middle position of the adjacent first guide sliding groove 241 along the length direction of the second guide sliding groove is arranged between the head end of the second guide sliding groove 242 and the middle position of the adjacent first guide sliding groove 241, the depth of the communicating groove two 244 is smaller than that of the first guide sliding groove 241, a transition inclined plane two 246 for smoothly connecting the second guide sliding groove 244 and the guide sliding groove 242 is arranged between the second communicating groove 244 and the second guide sliding groove 242, and the guide protrusion 236 can pass through the communicating groove two 244 and slide from the second guide sliding groove 242 to the head end of the adjacent first guide sliding groove 241 in a one-way manner.

Claims

1. An alternate air distribution method of a bidirectional pneumatic diaphragm pump comprises the following steps:

a preparation stage;

the diaphragm pump body is arranged on the base, and the power device is used for providing motive power for the reciprocating driving component;

the reciprocating driving component comprises a piston cylinder body which is coaxially and fixedly arranged between two diaphragm covers II and is provided with openings at two ends, the piston cylinder body is in sealing connection with the diaphragm covers II, a piston matched with the piston cylinder body is arranged in the piston cylinder body, the piston divides the piston cylinder body into a first chamber and a second chamber, the volumes of the first chamber and the second chamber are variable, the first chamber is positioned at the left side of the piston, the second chamber is positioned at the right side of the piston, the first chamber and the second chamber are the same in size in an initial state, a piston rod is coaxially and fixedly arranged on the piston and positioned at the middle position of the piston rod along the axial direction, one end of the piston rod movably penetrates through one of the diaphragm covers II to extend into one diaphragm cavity II and is fixedly connected with the middle position of the diaphragm therein, the other end of the piston rod movably penetrates through the other diaphragm cover II to extend into the other diaphragm cavity and, the piston cylinder body is provided with a first air valve which is always connected and communicated with the first chamber and a second air valve which is always connected and communicated with the second chamber;

the pipeline component comprises hard vertical pipelines, the vertical pipelines are provided with two tee liquid inlet pipes for connecting and communicating the input ends of the two vertical pipelines and a stock solution source, the output ends of the two vertical pipelines are provided with a tee liquid discharge pipe for connecting and communicating the three, the output end of the liquid discharge pipe points to a discharge point, the middle position of the vertical pipeline along the height direction is connected and communicated with the diaphragm cavity, a check valve I is arranged between the input end of the vertical pipeline and the liquid inlet pipe and used for unidirectionally conveying stock solution in the liquid inlet pipe into the vertical pipelines, and a check valve II is arranged between the output end of the vertical pipeline and the liquid discharge pipe and used for unidirectionally conveying stock solution in the vertical pipeline into the liquid discharge pipe;

the piston cylinder body is positioned right above the base, a support frame for connecting and fixing the piston cylinder body and the base is arranged between the piston cylinder body and the base, and the two support frames are arranged symmetrically along the axial direction of the piston cylinder body;

the power device is arranged between the piston cylinder body and the base, and comprises a rectangular mounting plate and a mounting frame, wherein the rectangular mounting plate and the mounting frame are fixedly mounted on the base, the length direction of the mounting plate is horizontally arranged, the width direction of the mounting plate is vertically arranged, the mounting frame comprises a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are symmetrically arranged along the width direction parallel to the mounting plate, the mounting frame is fixedly connected with the end part of the mounting plate along the length direction, a gas distribution mechanism communicated with the first valve and the second valve is erected between the first mounting frame and the second mounting frame, the gas distribution mechanism is used for injecting high-pressure gas into the first valve or the second valve, and a reversing mechanism for driving the gas distribution mechanism;

(II) gas distribution stage;

(III) alternate stages;

the outside of the reversing sleeve is provided with a rotary guide groove, the rotary guide groove is provided with eight guide grooves and is arranged along the circumferential direction array at the position of the reversing sleeve, the guide convex blocks are movably embedded in the rotary guide groove and form sliding guide fit along the guide direction of the rotary guide groove, the rotary guide groove comprises a first guide chute and a second guide chute, the first guide chute is arranged in parallel to the axial direction of the reversing sleeve, the second guide chute is connected and communicated with the first guide chute, the second guide chute is clockwise or anticlockwise twisted by forty-five degrees along the circumferential direction at the position of the outer circular surface of the reversing sleeve, one end, close to the first mounting frame, of the first guide chute and the second guide chute is a head end, one end, close to the second mounting frame, of the first guide chute is a tail end, the head end of the second guide chute and the head end of the first guide chute are deviated by forty-five degrees along the circumferential direction at the position of the reversing sleeve The first transition inclined plane for smoothly connecting the first guide sliding groove and the first communication groove is arranged between the first communication groove and the first guide sliding groove at the groove depth of the first guide sliding groove, the first guide protruding block can pass through the first communication groove and slide to the second guide sliding groove in a one-way mode from the first guide sliding groove, the first guide protruding block is embedded at the head end of the first guide sliding groove in a floating mode in an initial state, and the reciprocating stroke of the first guide protruding block is equal to the length of the first guide sliding;