CN214210420U - Pressure balancing system - Google Patents

Abstract

The utility model discloses a pressure balance system, include: the first reaction tank is used for containing reaction materials; the second reaction tank is used for utilizing the reaction materials to react and generate reaction gas; the first pump body is provided with a first inlet and a first outlet, the first inlet is communicated with the first reaction tank, and the first outlet is communicated with the second reaction tank and used for sucking reaction materials and transmitting the reaction materials to the second reaction tank; the second pump body is provided with a second inlet and a second outlet, the second inlet is communicated with the second reaction tank, and the second outlet is communicated with the first reaction tank and used for sucking reaction gas and transmitting the reaction gas to the first reaction tank; the gas regulating device is communicated with an external gas source and is used for inputting compressed gas serving as pumping power into the first pump body and the second pump body simultaneously and balancing the pressure between the first reaction tank and the second reaction tank.

Description

Pressure balancing system

Technical Field

The utility model relates to a chemical industry reaction feed liquid pump sending technical field specifically relates to a pressure balance system based on diaphragm pump.

Background

Some chemical reaction processes need to carry out continuous reaction under a sealed condition, so that the part of a stirring shaft of the reaction kettle, which extends into the kettle from the outside of the kettle in the prior art, is mostly treated in a rotary sealing mode. The simplest and most economical sealing mode is water sealing, nitrogen protection is added, and a communicating balance pipe is added on the top of the tank, but the scheme has the disadvantage of easily causing pressure fluctuation in the tank, such as unbalance adjustment of feeding flow and discharging flow in the material transferring process in the tank, and failure is easily caused when positive pressure and negative pressure in the tank are greater than positive pressure and negative pressure generated by the height of the water sealing; the tank top balance pipe has pressure difference between the two reaction tanks, the gas in the pipeline can flow to balance, but the gas flow in the balance pipe and the water seal failure can occur simultaneously, and the larger the pressure difference is, the longer the balance time is needed, or the water seal failure can be caused if the balance can not be realized; in addition, effective nitrogen protection generally needs a pressure detection instrument and a nitrogen flow control valve to form closed-loop control, the control process also needs a period of time to balance, and the risk of water seal failure still exists in the process of adjustment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pressure balance system, this pressure balance system control is simple, can keep the pressure balance between two retort, avoids the water seal inefficacy.

In order to achieve the above object, the present invention provides a pressure balance system, including:

the first reaction tank is used for containing reaction materials;

the second reaction tank is used for utilizing the reaction materials to react and generate reaction gas;

the first pump body is provided with a first inlet and a first outlet, the first inlet is communicated with the first reaction tank, and the first outlet is communicated with the second reaction tank and used for sucking reaction materials and transmitting the reaction materials to the second reaction tank;

the second pump body is provided with a second inlet and a second outlet, the second inlet is communicated with the second reaction tank, and the second outlet is communicated with the first reaction tank and used for sucking reaction gas and transmitting the reaction gas to the first reaction tank;

and the gas regulating device is communicated with an external gas source and is used for inputting compressed gas serving as pumping power into the first pump body and the second pump body simultaneously and balancing the pressure between the first reaction tank and the second reaction tank.

In the embodiment of the application, the first pump body comprises a first air chamber, a second air chamber and a first piston rod, the first air chamber and the second air chamber are respectively communicated with the air adjusting device, and the first piston rod penetrates through the first air chamber and the second air chamber and moves left and right along with air intake or exhaust of the first air chamber and the second air chamber;

the second pump body comprises a third air chamber, a fourth air chamber and a second piston rod, the third air chamber and the fourth air chamber are respectively communicated with the air adjusting device, and the second piston rod penetrates through the third air chamber and the fourth air chamber and moves left and right along with air intake or exhaust of the third air chamber and the fourth air chamber.

In the embodiment of the application, the first pump body further comprises a first material cavity and a second material cavity, the first material cavity is arranged close to the first air chamber and forms a positive pressure or negative pressure environment along with air intake or exhaust of the first air chamber;

the second material cavity is arranged close to the second air chamber and forms a positive pressure or negative pressure environment along with the air intake or exhaust of the second air chamber

The second pump body also comprises a third material cavity which is arranged close to the third air chamber and forms a positive pressure or negative pressure environment along with the air intake or exhaust of the third air chamber;

the second pump body further comprises a fourth material cavity, and the fourth material cavity is arranged close to the fourth air chamber and forms a positive pressure environment or a negative pressure environment along with air intake or exhaust of the fourth air chamber.

In an embodiment of the present application, the first pump body further includes a first diaphragm and a second diaphragm, the first diaphragm is disposed between the first material chamber and the first air chamber, and the second diaphragm is disposed between the second material chamber and the second air chamber; one end of the first piston rod penetrates through the first air chamber to be connected with the first diaphragm, and the other end of the first piston rod penetrates through the second air chamber to be connected with the second diaphragm; and

the second pump body further comprises a third diaphragm and a fourth diaphragm, the third diaphragm is arranged between the third material cavity and the third air chamber, and the fourth diaphragm is arranged between the fourth material cavity and the fourth air chamber; one end of the second piston rod penetrates through the third air chamber to be connected with the third diaphragm, and the other end of the second piston rod penetrates through the fourth air chamber to be connected with the fourth diaphragm.

In the embodiment of the application, the first pump body further comprises a first one-way valve assembly and a second one-way valve assembly, the first one-way valve assembly is arranged on a flow path of the reaction material flowing through the first material cavity, and the second one-way valve assembly is arranged on a flow path of the reaction material flowing through the second material cavity and is used for avoiding the backflow of the reaction material;

the second pump body further comprises a third one-way valve assembly and a fourth one-way valve assembly, the third one-way valve assembly is arranged on a flow path of the reaction gas flowing through the third material cavity, and the fourth one-way valve assembly is arranged on a flow path of the reaction gas flowing through the fourth material cavity and used for avoiding the backflow of the reaction gas.

In the embodiment of the application, the gas regulating device comprises a first reversing valve and a second reversing valve, the first reversing valve comprises a first valve cavity communicated with an external gas source, the first reversing valve is provided with a first valve position and a second valve position, and when the first reversing valve is located at the first valve position, the first gas chamber is communicated with the first valve cavity; when the first reversing valve is at the second valve position, the second air chamber is communicated with the first valve cavity;

the second reversing valve comprises a second valve cavity communicated with an external air source, the second reversing valve is provided with a third valve position and a fourth valve position, when the second reversing valve is located at the third valve position, the third air chamber is communicated with the second valve cavity, and when the second reversing valve is located at the fourth valve position, the fourth air chamber is communicated with the second valve cavity.

In an embodiment of the present application, the gas regulating device further includes a first pilot directional control valve and a second pilot directional control valve, the first pilot directional control valve is disposed on the first piston rod and configured to drive the first directional control valve to switch between a first valve position and a second valve position;

the second pilot switching valve is arranged on the second piston rod and is configured to drive the second switching valve to switch between a third valve position and a fourth valve position.

In this application embodiment, gaseous adjusting device still includes air inlet pipeline and first three-way valve, and air inlet pipeline's one end and outside air supply intercommunication, air inlet pipeline's the other end divide into first branch road and second branch road, first branch road and first valve chamber intercommunication, second branch road and second valve chamber intercommunication, and first three-way valve setting is in first branch road and second branch road crossing position department.

In an embodiment of the application, the gas regulating device further comprises a first speed regulating valve and a second speed regulating valve, the first speed regulating valve is arranged on the first branch, the second speed regulating valve is arranged on the second branch, and the first speed regulating valve and the second speed regulating valve are configured to equalize the pressure in the first branch and the second branch.

In the embodiment of the application, the gas regulating device further comprises a gas exhaust pipeline and a second three-way valve, the gas exhaust pipeline comprises a third branch, a fourth branch and a fifth branch, one end of the third branch is communicated with the first reversing valve, and the other end of the third branch is communicated with the second three-way valve; one end of the fourth branch is communicated with the second reversing valve, and the other end of the fourth branch is communicated with the second three-way valve; one end of the fifth branch is communicated with the second three-way valve, and the other end of the fifth branch is communicated with the outside.

Through the technical scheme, the first pump body and the second pump body are arranged between the first reaction tank and the second reaction tank, the gas adjusting device is arranged to control the external gas source to simultaneously admit gas into the first pump body and the second pump body, so that the reaction material in the first reaction tank is automatically sucked into the first pump body and is transmitted into the second reaction tank to react, the reaction gas in the second reaction tank with the same pressure is automatically sucked into the second pump body and is transmitted into the first reaction tank, and the pressure balance between the first reaction tank and the second reaction tank is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of a pressure equalization system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the first and second cylinders of FIG. 1;

fig. 3 is a top view of fig. 2.

Description of the reference numerals

1 base 2 first pump body

201 first inlet 202 first outlet

203 first material chamber 204 second material chamber

205 first air chamber 206 second air chamber

207 first diaphragm 208 second diaphragm

209 first piston rod 2010 first reversing valve

2011 first pilot change valve 2012 first check valve

2013 second check valve 2014 third check valve

2015 fourth one-way valve 3 second pump body

301 second inlet 302 second outlet

303 third material chamber 304 fourth material chamber

305 third air cell 306 fourth air cell

307 third diaphragm 308 fourth diaphragm

309 second piston rod 3010 second direction changing valve

3011 second pilot switching valve 3012 fifth check valve

3013 sixth one-way valve 3014 seventh one-way valve

3015 eighth check valve 4 air inlet pipeline

401 sixth branch 402 first branch

403 second branch 5 first three-way valve

6 first speed regulating valve 7 second speed regulating valve

8 exhaust line 801 third branch

802 fourth branch 803 fifth branch

9 second three-way valve 10 muffler

11 first reaction tank 12 second reaction tank

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The embodiment of the application provides a novel pressure balance system, and this pressure balance system is used for chemical industry reaction feed liquid pumping technical field. As shown in fig. 1, the pressure balancing system includes a first reaction tank 11, a second reaction tank 12, a first pump body 2, a second pump body 3, an external gas source and a gas regulating device, wherein the first reaction tank 11 is used for containing reaction materials, and a water-sealed sealing manner is adopted above the first reaction tank 11, so that a closed space is formed in the first reaction tank 11; the second reaction tank 12 also forms a closed space therein for performing a reaction using the reactant in the first reaction tank 11 and generating a reaction gas.

As shown in fig. 2, the first pump body 2 and the second pump body 3 are disposed on the base 1, and both the first pump body 2 and the second pump body 3 are diaphragm pumps, specifically, a first inlet 201 and a first outlet 202 are formed on the first pump body 2, the first inlet 201 is communicated with the first reaction tank 11, specifically, the first inlet 201 is disposed below the first pump body 2, a reactant outlet is disposed below the first reaction tank 11, and the reactant outlet is communicated with the first inlet 201 of the first pump body 2, so that a reactant can enter the first pump body 2; the first outlet 202 is communicated with the second reaction tank 12, the first outlet 202 is arranged above the first pump body 2, the reaction material inlet is arranged above the second reaction tank 12, and the reaction material is sucked into the first pump body 2 and then is transmitted to the second reaction tank 12 through the first outlet 202 and the reaction material inlet in sequence for reaction.

A second inlet 301 and a second outlet 302 are formed on the second pump body 3, the second inlet 301 is communicated with the second reaction tank 12, specifically, the second inlet 301 is arranged below the second pump body 3, a reaction gas outlet is arranged above the second reaction tank 12, and the reaction gas outlet is communicated with the second inlet 301 of the second pump body 3, so that the reaction gas can enter the second pump body 3; the second outlet 302 is communicated with the first reaction tank 11, the second outlet 302 is arranged above the second pump body 3, a reaction gas inlet is arranged above the first reaction tank 11, and reaction gas is sucked into the second pump body 3 and then is transmitted to the first reaction tank 11 through the second outlet 302 and the reaction gas inlet in sequence.

The external gas source is used for providing compressed gas to provide power for the automatic transmission of the reaction materials and the reaction gas between the first reaction tank 11 and the second reaction tank 12.

And the gas regulating device is communicated with an external gas source and is used for simultaneously inputting compressed gas serving as pumping power into the first pump body 2 and the second pump body 3 and balancing the pressure between the first reaction tank 11 and the second reaction tank 12. The gas adjusting device inputs compressed gas into the first pump body 2 and the second pump body 3 simultaneously to form an equal negative pressure environment and a positive pressure environment, so that the reaction material automatically enters the first pump body 2 and is transmitted to the second reaction tank 12, the reaction gas with the same pressure as the reaction material automatically enters the second pump body 3 and is transmitted to the first reaction tank 11, further, the pressure of the reaction material flowing out of the first reaction tank 11 is equal to that of the reaction gas flowing into the first reaction tank 11, and in the same way, the pressure of the reaction material flowing into the second reaction tank 12 is equal to that of the reaction gas flowing out of the second reaction tank 12, so that the reaction material and the reaction gas circularly flow between the first reaction tank 11 and the second reaction tank 12, meanwhile, the pressure balance between the first reaction tank 11 and the second reaction tank 12 is realized, and the water seal form failure in the first reaction tank 11 is avoided.

In the embodiment of the present application, the first pump body 2 includes a first air chamber 205, a second air chamber 206 and a first piston rod 209, the first air chamber 205 and the second air chamber 206 are arranged in the first pump body 2 in a bilateral symmetry manner, and the first air chamber 205 and the second air chamber 206 are respectively communicated with the air regulating device, so that an external air source can enter the first air chamber 205 and the second air chamber 206 through the air regulating device; the first piston rod 209 penetrates through the first air chamber 205 and the second air chamber 206 and moves left and right along with the air intake or exhaust of the first air chamber 205 and the second air chamber 206, namely, the first air chamber 205 drives the first piston rod 209 to move towards the direction far away from the second air chamber 206 when air is intake, at the moment, the second air chamber 206 enters an exhaust stage, the volume of the air entering the first air chamber 205 is the same as that of the air exhausted from the second air chamber 206, and the pressure balance in the first pump body 2 is maintained;

the second pump body 3 comprises a third air chamber 305, a fourth air chamber 306 and a second piston rod 309, the third air chamber 305 and the fourth air chamber 306 are arranged in the second pump body 3 in a bilateral symmetry manner, and the third air chamber 305 and the fourth air chamber 306 are respectively communicated with the air regulating device, so that an external air source can enter the third air chamber 305 and the fourth air chamber 306 through the air regulating device; the second piston rod 309 penetrates through the third air chamber 305 and the fourth air chamber 306 and moves left and right along with the air intake or exhaust of the third air chamber 305 and the fourth air chamber 306, that is, the third air chamber 305 drives the second piston rod 309 to move in the direction away from the fourth air chamber 306 when air is intake, at this time, the fourth air chamber 306 enters the exhaust stage, and the volume of the air entering the third air chamber 305 is the same as that of the air exhausted from the fourth air chamber 306, so that the pressure balance in the second pump body 3 is maintained.

In the embodiment of the present application, the first pump body 2 further includes a first material chamber 203 and a second material chamber 204, and the first material chamber 203 is disposed adjacent to the first air chamber 205 and forms a positive pressure or negative pressure environment with the intake or exhaust of the first air chamber 205. Specifically, when the first air chamber 205 is filled with air, the volume is increased, the volume of the first material chamber 203 is reduced, and a positive pressure environment is formed in the first material chamber 203, so that the reactant in the first material chamber 203 can be extruded out and conveyed to the second reaction tank 12; when the first air chamber 205 is exhausted, the volume is reduced and the volume of the first material chamber 203 is increased, so that a negative pressure environment is formed in the first material chamber 203, and the reactant in the first reaction tank 11 is automatically sucked into the first material chamber 203.

The second material chamber 204 is disposed adjacent to the second air chamber 206 and forms a positive or negative pressure environment with the intake or exhaust of the second air chamber 206. Similarly, when the volume of the second air chamber 206 is increased and the volume of the second material chamber 204 is decreased, a positive pressure environment is formed in the second material chamber 204, so that the reactant in the second material chamber 204 can be extruded out and transferred to the second reaction tank 12; when the second air chamber 206 is exhausted, the volume is reduced and the volume of the second material chamber 204 is increased, a negative pressure environment is formed in the second material chamber 204, so that the reaction material in the first reaction tank 11 is automatically sucked into the second material chamber 204, further, the air inlet and exhaust processes in the first air chamber 205 and the second air chamber 206 are alternately performed, and the ratio of the air inlet to the air exhaust is equal, so that the processes of sucking the reaction material and exhausting the reaction material in the first material chamber 203 and the second material chamber 204 are alternately performed, and the ratio of the sucked reaction material and the exhausted reaction material is equal.

The second pump body 3 further comprises a third material chamber 303, and the third material chamber 303 is arranged next to the third air chamber 305 and forms a positive pressure or negative pressure environment with the air intake or exhaust of the third air chamber 305. Specifically, when the third air chamber 305 is filled with air, the volume of the third material chamber 303 is increased, and the volume of the third material chamber 303 is decreased, so that a positive pressure environment is formed in the third material chamber 303, and the reaction gas in the third material chamber 303 can be extruded out and transferred to the first reaction tank 11; when the third air chamber 305 is exhausted, the volume is reduced and the volume of the third material chamber 303 is increased, so that a negative pressure environment is formed in the third material chamber 303, and the reaction gas in the second reaction tank 12 is automatically sucked into the third material chamber 303.

The second pump body 3 further includes a fourth material chamber 304, and the fourth material chamber 304 is disposed adjacent to the fourth air chamber 306 and forms a positive pressure or negative pressure environment with the intake or exhaust of the fourth air chamber 306. Similarly, when the fourth air chamber 306 is filled with air, the volume is increased, the volume of the fourth material chamber 304 is decreased, and a positive pressure environment is formed in the fourth material chamber 304, so that the reaction gas in the fourth material chamber 304 can be extruded out and transferred to the first reaction tank 11; when the fourth air chamber 306 is exhausted, the volume is reduced and the volume of the fourth material chamber 304 is increased, a negative pressure environment is formed in the fourth material chamber 304, so that the reaction gas in the second reaction tank 12 is automatically sucked into the fourth material chamber 304, further, the air inlet and exhaust processes in the third air chamber 305 and the fourth air chamber 306 are alternately performed, and the proportions of the air inlet and the air exhaust are equal, so that the processes of sucking the reaction gas and exhausting the reaction gas in the third material chamber 303 and the fourth material chamber 304 are alternately performed, and the proportions of the sucked reaction gas and the exhausted reaction gas are equal.

In the present embodiment, the first pump body 2 further comprises a first membrane 207 and a second membrane 208, the first membrane 207 being arranged between the first chamber 203 and the first air chamber 205, the second membrane 208 being arranged between the second chamber 204 and the second air chamber 206; one end of a first piston rod 209 penetrates through the first air chamber 205 to be connected with the first diaphragm 207, the other end of the first piston rod 209 penetrates through the second air chamber 206 to be connected with the second diaphragm 208, when air enters the first air chamber 205, the first diaphragm 207 moves towards the first material chamber 203 to drive the first piston rod 209 to move towards the same direction, further the second diaphragm 208 moves towards the direction far away from the second material chamber 204 to extrude the air in the second air chamber 206, and when air enters the second air chamber 206, the motion process of the second piston rod 309 and the second diaphragm 208 is opposite to that of the second piston rod 309 and the second diaphragm 208.

The second pump body 3 further comprises a third diaphragm 307 and a fourth diaphragm 308, the third diaphragm 307 being arranged between the third chamber 303 and the third air chamber 305, the fourth diaphragm 308 being arranged between the fourth chamber 304 and the fourth air chamber 306; one end of a second piston rod 309 penetrates through the third air chamber 305 to be connected with a third diaphragm 307, the other end of the second piston rod 309 penetrates through the fourth air chamber 306 to be connected with a fourth diaphragm 308, when air enters the third air chamber 305, the third diaphragm 307 moves towards the third material chamber 303 to drive the second piston rod 309 to move towards the same direction, further the third diaphragm 307 moves towards the direction far away from the third material chamber 303 to extrude the air in the fourth air chamber 306, and the movement processes of the second piston rod 309 and the fourth diaphragm 308 are opposite to each other when air enters the fourth air chamber 306.

In the embodiment of the present application, the first pump body 2 further includes a first check valve assembly and a second check valve assembly, the first check valve assembly is disposed on a flow path of the reaction material flowing through the first material chamber 203, the second check valve assembly is disposed on a flow path of the reaction material flowing through the second material chamber 204, specifically, the first check valve assembly includes a first check valve 2012 and a second check valve 2013, the first check valve 2012 is disposed on a flow path from the first inlet 201 to the first material chamber 203, and the second check valve 2013 is disposed on a flow path from the first material chamber 203 to the first outlet 202, so as to prevent the reaction material from flowing back during the process of entering or exiting the first material chamber 203; the second check valve assembly includes a third check valve 2014 and a fourth check valve 2015, the fourth check valve 2015 is arranged on the flow path from the first inlet 201 to the second material chamber 204, and the third check valve 2014 is arranged on the flow path from the second material chamber 204 to the first outlet 202, so as to avoid the reaction material from flowing back in the process of entering or exiting the second material chamber 204.

The second pump body 3 further comprises a third one-way valve assembly and a fourth one-way valve assembly, the third one-way valve assembly is arranged on a flow path of the reaction gas flowing through the third material cavity 303, the fourth one-way valve assembly is arranged on a flow path of the reaction gas flowing through the fourth material cavity 304, specifically, the third one-way valve assembly comprises a fifth one-way valve 3012 and a sixth one-way valve 3013, the fifth one-way valve 3012 is arranged on a flow path from the second inlet 301 to the third material cavity 303, and the sixth one-way valve 3013 is arranged on a flow path from the third material cavity 303 to the second outlet 302, so that the reaction gas is prevented from flowing back in the process of entering or exiting the third material cavity 303; the fourth check valve assembly includes a seventh check valve 3014 and an eighth check valve 3015, where the eighth check valve 3015 is disposed on the flow path from the second inlet 301 to the fourth material chamber 304, and the seventh check valve 3014 is disposed on the flow path from the fourth material chamber 304 to the second outlet 302, so as to prevent the reaction gas from flowing back during the process of entering or exiting the fourth material chamber 304.

In the embodiment of the application, as shown in fig. 3, the gas regulating device includes a first direction valve 2010 and a second direction valve 3010, the first direction valve 2010 includes a first valve cavity communicated with an external gas source, the first direction valve 2010 has a first valve position and a second valve position, and when the first direction valve 2010 is in the first valve position, the first gas chamber 205 is communicated with the first valve cavity; when the first directional valve 2010 is in the second valve position, the second air chamber 206 is communicated with the first valve chamber, specifically, the first directional valve 2010 further comprises a third valve chamber and a fourth valve chamber which are respectively communicated with the first valve chamber, wherein the third valve chamber is communicated with the first air chamber 205, the fourth valve chamber is communicated with the second air chamber 206, and when the first directional valve 2010 is in the first valve position, compressed air sequentially flows into the first air chamber 205 through the first valve chamber and the third valve chamber; when the first directional valve 2010 is in the second position, the compressed gas flows into the second gas chamber 206 through the first valve chamber and the fourth valve chamber in sequence.

The second direction valve 3010 includes a second valve cavity in communication with an external air source, the second direction valve 3010 has a third valve position and a fourth valve position, the third air chamber 305 is in communication with the second valve cavity when the second direction valve 3010 is in the third valve position, and the fourth air chamber 306 is in communication with the second valve cavity when the second direction valve 3010 is in the fourth valve position. Specifically, the second directional valve 3010 further includes a fifth valve cavity and a sixth valve cavity respectively communicated with the second valve cavity, wherein the fifth valve cavity is communicated with the third air chamber 305, the sixth valve cavity is communicated with the fourth air chamber 306, and when the second directional valve 3010 is in the third valve position, the compressed air sequentially flows into the third air chamber 305 through the second valve cavity and the fifth valve cavity; when the second directional valve 3010 is in the fourth position, the compressed gas flows into the fourth gas chamber 306 through the second and sixth valve chambers in sequence.

In the embodiment of the present application, the gas regulating apparatus further includes a first pilot direction changing valve 2011 and a second pilot direction changing valve 3011, the first pilot direction changing valve 2011 is disposed on the first piston rod 209 and configured to drive the first direction changing valve 2010 to switch between the first valve position and the second valve position; a second pilot switching valve 3011 is provided on the second piston rod 309 and configured to drive the second switching valve 3010 to switch between the third valve position and the fourth valve position.

Specifically, the first pilot-operated directional control valve 2011 is sleeved on the first piston rod 209 and has a first stroke position and a second stroke position, the first pilot-operated directional control valve 2011 moves between the first stroke position and the second stroke position along with the left and right movement of the first piston rod 209, the first pilot-operated directional control valve 2011 further comprises a seventh valve cavity, an eighth valve cavity and a ninth valve cavity, wherein the seventh valve cavity is always communicated with an external air source, namely, air pressure always exists in the seventh valve cavity, a first upper cavity for accommodating the first directional control valve 2010 in the first valve position is further formed in the first pump body 2, a first lower cavity for accommodating the first directional control valve 2010 in the second valve position is formed in the first pump body, the eighth valve cavity is communicated with the first upper cavity, and the ninth valve cavity is communicated with the first lower cavity. When the first pilot-operated directional control valve 2011 moves to the first stroke position along with the first piston rod 209, the seventh valve cavity is communicated with the ninth valve cavity, and compressed gas sequentially passes through the seventh valve cavity and the ninth valve cavity to reach the first lower cavity and apply upward pressure to the first directional control valve 2010 so as to enable the first directional control valve 2010 to be in the first valve position, and further enable compressed gas of an external gas source to enter the first gas chamber 205; when the first pilot-operated directional control valve 2011 moves to the second stroke position along with the first piston rod 209, the seventh valve cavity is communicated with the eighth valve cavity, and the compressed gas sequentially passes through the seventh valve cavity and the eighth valve cavity to reach the first upper cavity and apply downward pressure to the first directional control valve 2010, so that the first directional control valve 2010 is located at the second valve position, and the compressed gas of the external gas source enters the second gas chamber 206. The operation principle of second pilot switching valve 3011 is the same as that of first pilot switching valve 2011.

In the embodiment of the present application, the gas regulating device further includes an air inlet pipeline 4 and a first three-way valve 5, one end of the air inlet pipeline 4 is communicated with an external gas source, the other end of the air inlet pipeline 4 is divided into a first branch 402 and a second branch 403, the first branch 402 is communicated with the first valve cavity, the second branch 403 is communicated with the second valve cavity, and the first three-way valve 5 is disposed at the intersection of the first branch 402 and the second branch 403. Specifically, the air inlet pipeline 4 further comprises a sixth branch 401, one end of the sixth branch 401 is communicated with an external air source, and the other end of the sixth branch 401 is communicated with a first end of a first three-way valve 5; one end of the first branch 402 is communicated with the second end of the first three-way valve 5, and the other end of the first branch 402 is communicated with the first valve cavity in the first reversing valve 2010; one end of the second branch 403 is communicated with a third end of the first three-way valve 5, and the other end of the second branch 403 is communicated with a second valve cavity in the second reversing valve 3010, so that external air sources can sequentially supply air into the first pump body 2 and the second pump body 3.

In the embodiment of the present application, the gas regulating device further includes a first speed regulating valve 6 and a second speed regulating valve 7, the first speed regulating valve 6 is disposed on the first branch 402, the second speed regulating valve 7 is disposed on the second branch 403, and the first speed regulating valve 6 and the second speed regulating valve 7 are configured to equalize the pressures in the first branch 402 and the second branch 403, so as to maintain the pressure balance inside the first pump body 2 and the second pump body 3, so that the pressure of the reactant entering the first pump body 2 is equalized with the pressure of the reactant entering the second pump body 3, and at the same time, the pressure of the reactant exiting the first pump body 2 is equalized with the pressure of the reactant exiting the second pump body 3.

In the embodiment of the present application, the gas regulating apparatus further includes a gas exhaust line 8 and a second three-way valve 9, the gas exhaust line 8 includes a third branch 801, a fourth branch 802 and a fifth branch 803, one end of the third branch 801 is communicated with a first direction changing valve 2010, and the other end of the third branch 801 is communicated with the second three-way valve 9; one end of the fourth branch 802 is communicated with the second reversing valve 3010, and the other end of the fourth branch 802 is communicated with the second three-way valve 9; one end of the fifth branch 803 is communicated with the second three-way valve 9, and the other end of the fifth branch 803 is communicated with the outside. Specifically, the first pilot operated directional control valve 2011 further comprises a tenth valve cavity and an eleventh valve cavity, wherein one end of the tenth valve cavity is communicated with the first air chamber 205, and the other end of the tenth valve cavity is communicated with the third branch 801 through the first directional control valve 2010; one end of the eleventh valve chamber is communicated with the second air chamber 206, and the other end is communicated with the third branch 801 through the first direction changing valve 2010. The second pilot-operated directional control valve 3011 further includes a twelfth valve cavity and a thirteenth valve cavity, where one end of the twelfth valve cavity is communicated with the third air chamber 305, and the other end is communicated with the fourth branch 802 through the first directional control valve 2010; one end of the thirteenth valve chamber communicates with the fourth air chamber 306, and the other end communicates with the fourth branch 802 via the first direction valve 2010. Further, one end of the third branch 801 is communicated with the first direction changing valve 2010, and the other end is communicated with the first end of the second three-way valve 9; one end of the fourth branch 802 is communicated with the second reversing valve 3010, and the other end is communicated with the second end of the second three-way valve 9; one end of the fifth branch 803 is communicated with the third end of the second three-way valve 9, and the other end is communicated with the outside atmosphere. In addition, the silencer 10 is arranged on the fifth branch 803, so that noise generated in the working process of the first pump body 2 and the second pump body 3 is reduced, and the use experience is improved.

The embodiment of the utility model provides an in the operating principle of pressure balance system does:

assuming that the first material chamber 203 is filled with the reaction material in the first reaction tank 11 and the fourth material chamber 304 is filled with the reaction gas reacted by the second reaction tank 12 in the initial state, the external air source simultaneously enters the first air chamber 205 of the first pump body 2 and the fourth air chamber 306 of the second pump body 3 through the first three-way valve 5 in the air inlet pipeline 4.

In the first pump body 2:

when the first gas chamber 205 is filled with gas, the first directional control valve 2010 is in the first valve position, the gas of the external gas source sequentially passes through the sixth branch 401, the first branch 402, the first valve cavity and the third valve cavity of the first directional control valve 2010 and then enters the first gas chamber 205 through the gas port, as the gas entering the first gas chamber 205 increases, the gas pressure in the first gas chamber 205 is gradually increased and extrudes, the first diaphragm 207 is pushed to move towards the first material chamber 203 so as to form positive pressure in the first material chamber 203, the reactant in the first material chamber 203 is extruded out, and the reactant passes through the first outlet 202 and then reaches the second reaction tank 12 for reaction.

Further, in the air intake process of the first air chamber 205, the first diaphragm 207 drives the first piston rod 209 to move in the process of being away from the second material chamber 204, the first piston rod 209 drives the first pilot-operated directional valve 2011 to move in the same direction until the first pilot-operated directional valve 2011 reaches the first stroke position, so that the seventh valve chamber and the ninth valve chamber of the first pilot-operated directional valve 2011 are communicated, the compressed air in the seventh valve chamber passes through the ninth valve chamber to reach the first lower position chamber of the first directional valve 2010, and when the air pressure in the first lower position chamber of the first directional valve 2010 is increased to a first preset pressure value, the air extrudes the first directional valve 2010 to move downward to the second valve position, so that the air port leading to the first air chamber 205 is closed, and the air port leading to the second air chamber 206 is opened, so that an external air source can enter the second air chamber 206 through the first valve chamber and the fourth valve chamber of the first directional valve 2010;

when the first air chamber 205 is filled with air, the second air chamber 206 is exhausted, the compressed air in the second air chamber 206 sequentially passes through the eleventh valve cavity of the first pilot reversing valve 2011 and the first reversing valve 2010, enters the third branch 801 of the exhaust pipeline 8, passes through the second three-way valve 9, enters the fifth branch 803, and is finally exhausted into the atmosphere.

With the discharge of the gas in the second gas chamber 206, the first piston rod 209 drives the second diaphragm 208 to move toward the first gas chamber 205, the volume of the second gas chamber 206 gradually decreases and the volume of the second material chamber 204 gradually increases, and the reactant in the first reaction tank 11 flows into the first pump body 2 and gradually fills the second material chamber 204.

Similarly, in the air intake process of the second air chamber 206, the second diaphragm 208 drives the first piston rod 209 to move in the process of being away from the first material chamber 203, the first piston rod 209 drives the first pilot-operated directional valve 2011 to move in the same direction until the first pilot-operated directional valve 2011 reaches the second stroke position, so that the seventh valve cavity and the eighth valve cavity of the first pilot-operated directional valve 2011 are communicated, and the gas in the seventh valve cavity reaches the first lower valve cavity of the first directional valve 2010 through the eighth valve cavity. When the gas pressure in the first lower valve cavity of the first reversing valve 2010 is increased to a second preset pressure value, the gas presses the first reversing valve 2010 to move upwards to the first valve position, so that a gas port leading to the second gas chamber 206 is closed, and a gas port leading to the first gas chamber 205 is opened, so that the gas can enter the first gas chamber 205 through the first valve cavity of the first reversing valve 2010, the above processes are cycled, so that the first gas chamber 205 and the second gas chamber 206 alternately perform gas inlet and gas exhaust, and the first material chamber 203 and the second material chamber 204 in the first pump body 2 alternately perform feeding and discharging of the reaction materials.

The various parts of the second pump body 3 operate in the same principle as the first pump body 2 and are not described in detail here.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited thereto. Within the scope of the technical idea of the present application, numerous simple modifications can be made to the technical solution of the present application, including combinations of the specific technical features in any suitable way, and in order to avoid unnecessary repetition, various possible combinations will not be further described herein. These simple modifications and combinations should also be considered as disclosed in the present application, and all fall within the scope of protection of the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A pressure equalization system, comprising:

the first reaction tank (11) is used for containing reaction materials;

a second reaction tank (12) for carrying out a reaction by using the reaction material and generating a reaction gas;

a first pump body (2), wherein a first inlet (201) and a first outlet (202) are formed on the first pump body (2), the first inlet (201) is communicated with the first reaction tank (11), and the first outlet (202) is communicated with the second reaction tank (12) for sucking the reaction materials and transferring the reaction materials into the second reaction tank (12);

a second pump body (3), wherein a second inlet (301) and a second outlet (302) are formed on the second pump body (3), the second inlet (301) is communicated with the second reaction tank (12), and the second outlet (302) is communicated with the first reaction tank (11) for sucking the reaction gas and transmitting the reaction gas into the first reaction tank (11);

and the gas regulating device is communicated with an external gas source and is used for simultaneously inputting compressed gas serving as pumping power into the first pump body (2) and the second pump body (3) and balancing the pressure between the first reaction tank (11) and the second reaction tank (12).

2. The pressure balancing system according to claim 1, characterized in that the first pump body (2) comprises a first air chamber (205), a second air chamber (206) and a first piston rod (209), the first air chamber (205) and the second air chamber (206) being respectively in communication with the gas regulating means, the first piston rod (209) being arranged through the first air chamber (205) and the second air chamber (206) and moving left and right with the intake or exhaust of the first air chamber (205) and the second air chamber (206);

the second pump body (3) comprises a third air chamber (305), a fourth air chamber (306) and a second piston rod (309), the third air chamber (305) and the fourth air chamber (306) are respectively communicated with the air adjusting device, and the second piston rod (309) penetrates through the third air chamber (305) and the fourth air chamber (306) and moves left and right along with air intake or exhaust of the third air chamber (305) and the fourth air chamber (306).

3. The pressure balancing system of claim 2, wherein the first pump body (2) further comprises a first material chamber (203) and a second material chamber (204), the first material chamber (203) being disposed proximate to the first air chamber (205) and forming a positive or negative pressure environment with the intake or exhaust of the first air chamber (205);

the second material chamber (204) is arranged next to the second air chamber (206) and forms a positive pressure or negative pressure environment with the air intake or exhaust of the second air chamber (206);

the second pump body (3) further comprises a third material cavity (303), the third material cavity (303) is arranged next to the third air chamber (305) and forms a positive pressure or negative pressure environment along with the air intake or exhaust of the third air chamber (305);

the second pump body (3) further comprises a fourth material chamber (304), wherein the fourth material chamber (304) is arranged next to the fourth air chamber (306) and forms a positive pressure or negative pressure environment along with the air intake or exhaust of the fourth air chamber (306).

4. The pressure equalization system of claim 3, characterized in that the first pump body (2) further comprises a first diaphragm (207) and a second diaphragm (208), the first diaphragm (207) being disposed between the first charge chamber (203) and the first gas chamber (205), the second diaphragm (208) being disposed between the second charge chamber (204) and the second gas chamber (206); one end of the first piston rod (209) passes through the first air chamber (205) and is connected with the first diaphragm (207), and the other end of the first piston rod (209) passes through the second air chamber (206) and is connected with the second diaphragm (208); and

the second pump body (3) further comprising a third diaphragm (307) and a fourth diaphragm (308), the third diaphragm (307) being arranged between the third material chamber and the third gas chamber (305), the fourth diaphragm (308) being arranged between the fourth material chamber (304) and the fourth gas chamber (306); one end of the second piston rod (309) penetrates through the third air chamber (305) and is connected with the third diaphragm (307), and the other end of the second piston rod (309) penetrates through the fourth air chamber (306) and is connected with the fourth diaphragm (308).

5. A pressure balancing system according to claim 3, characterized in that the first pump body (2) further comprises a first one-way valve assembly and a second one-way valve assembly for avoiding backflow of the reactant material, the first one-way valve assembly being arranged in the flow path of the reactant material through the first material chamber (203), the second one-way valve assembly being arranged in the flow path of the reactant material through the second material chamber (204);

the second pump body (3) further comprises a third one-way valve assembly and a fourth one-way valve assembly for avoiding the backflow of the reaction gas, the third one-way valve assembly is arranged on a flow path of the reaction gas flowing through the third material chamber, and the fourth one-way valve assembly is arranged on a flow path of the reaction gas flowing through the fourth material chamber (304).

6. The pressure equalization system of claim 2, wherein the gas regulating device comprises a first directional valve (2010) and a second directional valve (3010), the first directional valve (2010) comprising a first valve chamber in communication with the external gas source, the first directional valve (2010) having a first valve position and a second valve position, the first gas chamber (205) in communication with the first valve chamber when the first directional valve (2010) is in the first valve position; when the first reversing valve (2010) is in the second valve position, the second air chamber (206) is communicated with the first valve cavity;

the second reversing valve (3010) comprises a second valve cavity communicated with the external air source, the second reversing valve (3010) has a third valve position and a fourth valve position, and when the second reversing valve (3010) is in the third valve position, the third air chamber (305) is communicated with the second valve cavity; when the second reversing valve (3010) is in the fourth valve position, the fourth air chamber (306) is communicated with the second valve cavity.

7. The pressure balancing system of claim 6, wherein the gas regulating device further comprises a first pilot operated directional valve (2011) and a second pilot operated directional valve (3011), the first pilot operated directional valve (2011) being disposed on the first piston rod (209) and configured to drive the first directional valve (2010) to switch between the first valve position and the second valve position;

the second pilot directional valve (3011) is disposed on the second piston rod (309) and configured to drive the second directional valve (3010) to switch between the third valve position and the fourth valve position.

8. The pressure equalization system of claim 6, characterized in that the gas regulating device further comprises an intake line (4) and a first three-way valve (5), one end of the intake line (4) being in communication with the external gas source, the other end of the intake line (4) being divided into a first branch (402) and a second branch (403), the first branch (402) being in communication with the first valve chamber, the second branch (403) being in communication with the second valve chamber, the first three-way valve (5) being arranged at the intersection of the first branch (402) and the second branch (403).

9. The pressure equalization system of claim 8, wherein the gas regulating device further comprises a first speed valve (6) and a second speed valve (7), the first speed valve (6) being disposed on the first branch (402), the second speed valve (7) being disposed on the second branch (403), the first speed valve (6) and the second speed valve (7) being configured to equalize the pressure in the first branch (402) and the second branch (403).

10. The pressure equalization system of claim 6, characterized in that the gas regulating device further comprises a vent line (8) and a second three-way valve (9), the vent line (8) comprising a third branch (801), a fourth branch (802) and a fifth branch (803), one end of the third branch (801) being in communication with the first directional valve (2010), the other end of the third branch (801) being in communication with the second three-way valve (9); one end of the fourth branch (802) is communicated with the second reversing valve (3010), and the other end of the fourth branch (802) is communicated with the second three-way valve (9); one end of the fifth branch (803) is communicated with the second three-way valve (9), and the other end of the fifth branch (803) is communicated with the outside.

Images