CN214998524U - Double-pump working system - Google Patents

Abstract

The utility model discloses a double-pump working system, which relates to the technical field of hydropneumatic, and enables two refrigerant pumps to synchronously supply refrigerants with lower cost, and comprises a first pump subsystem, a second pump subsystem and a double-pump synchronous subsystem; the first pump subsystem comprises a first three-way valve, a second three-way valve, a first reversing valve and a first cylinder; the second pump subsystem comprises a second reversing valve and a second cylinder; the double-pump synchronous subsystem comprises a first pneumatic valve, a second pneumatic valve, a third pneumatic valve and a fourth pneumatic valve, the first three-way valve is communicated with the first pneumatic valve, the first air outlet end of the first pneumatic valve is communicated with a first reversing valve, the second air outlet end of the first pneumatic valve is communicated with the first reversing valve and the second reversing valve respectively, the second three-way valve is communicated with the third pneumatic valve, the third air outlet end of the third pneumatic valve is communicated with the second reversing valve, and the fourth air outlet end of the third pneumatic valve is communicated with the first reversing valve and the second reversing valve respectively.

Description

Double-pump working system

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of hydropneumatic, especially, relate to a double pump work system.

[ background of the invention ]

In a refrigerant conveying system, because the supply speed of a single pump is limited, two refrigerant transmission pumps are required to meet the refrigerant supply requirement when refrigerant is filled at a high speed, the problem that the working loads of the two pumps are different can be caused by the conventional parallel connection mode of the two booster pumps, and the load of one pump with high load is higher and higher. The load balance of the two pumps can be realized by using a plurality of sensors to monitor the pressure of the refrigerant for automatic adjustment, but the cost is higher.

[ summary of the invention ]

In order to solve the problem that the cost required by the two refrigerant pumps for supplying the refrigerants at the same time is high, the application provides a double-pump working system which can enable the two refrigerant pumps to supply the refrigerants synchronously and is low in cost.

The application is realized by the following technical scheme:

a dual pump work system comprising a gas source and further comprising:

the first pump subsystem comprises a first reversing valve, a first air cylinder, a first three-way valve and a second three-way valve, wherein the first reversing valve comprises a first air pressure triggering port and a second air pressure triggering port;

the second pump subsystem comprises a second reversing valve, a second cylinder, a third three-way valve and a fourth three-way valve, and the second reversing valve comprises a third air pressure triggering port and a fourth air pressure triggering port;

the double-pump synchronous subsystem comprises a first pneumatic valve, a second pneumatic valve, a third pneumatic valve and a fourth pneumatic valve, wherein the air outlet end of the first three-way valve is communicated with the air inlet end of the first pneumatic valve, the first pneumatic valve comprises an air outlet end and a second air outlet end, the first air outlet end of the first pneumatic valve is communicated with the first air pressure trigger port, the second air outlet end of the first pneumatic valve is communicated with the air inlet end of the second pneumatic valve and the third air pressure trigger port through a third three-way valve respectively, the air outlet end of the second pneumatic valve is communicated with the first air pressure trigger port, the air outlet end of the second three-way valve is communicated with the air inlet end of the third pneumatic valve, the third pneumatic valve comprises an air outlet end and a fourth air outlet end, the third air outlet end of the third pneumatic valve is communicated with the second air pressure trigger port, the fourth air outlet end of the third pneumatic valve is communicated with the air inlet end of the fourth pneumatic valve and the fourth air pressure trigger port And the air outlet end of the fourth pneumatic valve is communicated with the second air pressure trigger port.

Further, the first three-way valve comprises a first air outlet, the first pneumatic valve comprises a first air inlet, a second air outlet and a third air outlet, the third three-way valve comprises a second air inlet and a fourth air outlet, and the second pneumatic valve comprises a third air inlet, a fifth air outlet and a first blocking port;

the first air outlet is communicated with the first air inlet, the second air outlet is communicated with the first air pressure triggering port, the third air outlet is communicated with the second air inlet, the fourth air outlet is respectively communicated with the third air pressure triggering port and the third air inlet, the fifth air outlet is communicated with the first air pressure triggering port, and a first plug is arranged on the first air blocking port;

the second three-way valve comprises a sixth air outlet, the third pneumatic valve comprises a fourth air inlet, a seventh air outlet and an eighth air outlet, the fourth three-way valve comprises a fifth air inlet and a ninth air outlet, and the fourth pneumatic valve comprises a sixth air inlet, a tenth air outlet and a second air blocking port;

the sixth air outlet is communicated with the fourth air inlet, the seventh air outlet is communicated with the second air pressure trigger port, the eighth air outlet is communicated with the fifth air inlet, the ninth air outlet is communicated with the fourth air pressure trigger port and the sixth air inlet respectively, the tenth air outlet is communicated with the second air pressure trigger port, and a second plug is arranged on the second gas plug port.

Furthermore, the double-pump working system further comprises a third switch, wherein a first end of the third switch is communicated with the air source, a second end of the third switch is communicated with the first air pressure triggering port through a first one-way valve, and the second end of the third switch is communicated with the third air pressure triggering port through a second one-way valve.

Further, a third switch and the air source are connected in series, and:

the fifth pneumatic valve comprises a seventh air inlet, an eleventh air outlet and a fifth air pressure trigger port, the air source is communicated with the seventh air inlet, and the air flow input end of the first pump subsystem is communicated with the fifth air pressure trigger port;

and the sixth pneumatic valve comprises an eighth air inlet, a twelfth air outlet and a sixth pneumatic trigger port, the eleventh air outlet is communicated with the eighth air inlet, the twelfth air outlet is communicated with the third switch, and the airflow input end of the second pump subsystem is communicated with the sixth pneumatic trigger port.

Further, the second pump subsystem further comprises:

the seventh pneumatic valve comprises a ninth air inlet, a thirteenth air outlet, a third air blocking port and a seventh air pressure triggering port, the airflow input end of the second pump subsystem is communicated with the ninth air inlet, the thirteenth air outlet is communicated with the second air inlet, the twelfth air outlet is communicated with the seventh air pressure triggering port, and the third air blocking port is provided with a third air blocking head;

and the eighth pneumatic valve comprises a tenth air port, a fourteenth air outlet, a fourth air blocking port and an eighth air pressure triggering port, the air flow input end of the second pump subsystem is communicated with the tenth air port, the fourteenth air outlet is communicated with the fifth air inlet, the twelfth air outlet is communicated with the eighth air pressure triggering port, and the fourth air blocking port is provided with a fourth air blocking head.

Further, the first pneumatic valve further comprises a ninth pneumatic trigger port, the second pneumatic valve further comprises a tenth pneumatic trigger port, the third pneumatic valve further comprises an eleventh pneumatic trigger port, the fourth pneumatic valve further comprises a twelfth pneumatic trigger port, and the twelfth air outlet is respectively communicated with the ninth pneumatic trigger port, the tenth pneumatic trigger port, the eleventh pneumatic trigger port and the twelfth pneumatic trigger port.

Further, the airflow input end of the first pump subsystem is provided with a first switch for closing or opening airflow, and the airflow input end of the second pump subsystem is provided with a second switch for closing or opening airflow.

Further, the first cylinder comprises a first rod cavity and a first rodless cavity, the first reversing valve comprises an eleventh air inlet, a first working port and a second working port, a first airflow output end of the first switch is communicated with the eleventh air inlet, the first working port is connected into the first rod cavity, and the second working port is connected into the first rodless cavity;

the second cylinder comprises a second rod cavity and a second rodless cavity, the second reversing valve comprises a twelfth air inlet, a third working port and a fourth working port, a second airflow output end of the second switch is communicated with the twelfth air inlet, the third working port is connected into the second rod cavity, and the fourth working port is connected into the second rodless cavity.

Further, the first three-way valve further comprises a thirteenth air inlet and a first signal access end, the first airflow output end of the first switch is communicated with the thirteenth air inlet, and one end, close to the first rod-free cavity, of the first air cylinder is connected with the first signal access end;

the second three-way valve further comprises a fourteenth air inlet and a second signal access end, a first airflow output end of the first switch is communicated with the fourteenth air inlet, and one end, close to the first rod cavity, of the first air cylinder is connected with the second signal access end.

Further, the third three-way valve further comprises a third signal access end, and one end, close to the second rodless cavity, of the second cylinder is connected with the third signal access end; the fourth three-way valve further comprises a fourth signal access end, and one end, close to the second rod cavity, of the second cylinder is connected with the fourth signal access end.

Compared with the prior art, the method has the following advantages:

1. when signal airflow of the first pump subsystem starts to be output and simultaneously inputs the first air pressure trigger port and the third air pressure trigger port, the valve core of the first reversing valve starts to move, and then working airflow is reversed, so that the first air cylinder does work in one direction, and meanwhile, the valve core of the second reversing valve starts to move, and then working airflow is reversed, so that the second air cylinder does work in the same direction as the first air cylinder, and therefore, the first air cylinder and the second air cylinder synchronously start to do work in the same direction; when the signal airflow of the first pump subsystem starts to be output and simultaneously input into the second air pressure trigger port and the fourth air pressure trigger port, the valve core of the first reversing valve starts to move, and then the working airflow is reversed, so that the first air cylinder does work in the other direction, and meanwhile, the valve core of the second reversing valve starts to move, and then the working airflow is reversed, so that the second air cylinder does work in the same direction as the first air cylinder, and therefore, the first air cylinder and the second air cylinder synchronously start to do work in the other same direction. Because in refrigerant system, first cylinder is connected first refrigerant jar, and the second cylinder is connected the second refrigerant jar, so two refrigerant jar synchronous motion, this application embodiment double pump work system makes two refrigerant pumps supply the refrigerant in step, and this application embodiment double pump work system only needs the air supply, need not to add the power, so the cost is lower.

2. When the first cylinder and the second cylinder need to move synchronously, if the initial movement states of the first cylinder and the second cylinder are not consistent, the third switch is opened to force the valve cores of the first reversing valve and the second reversing valve to be at corresponding positions, so that the first cylinder and the second cylinder move synchronously, and the two refrigerant pumps supply refrigerants synchronously.

3. The first pump subsystem and the second pump subsystem can work synchronously, and any pump can work independently, so that a user can determine the working mode of the double-pump working system according to the specific demand condition of a load end refrigerant.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

Fig. 1 is a schematic communication diagram of a dual-pump synchronous operation of a dual-pump operation system according to an embodiment of the present application.

Fig. 2 is a schematic communication diagram of a single pump of the dual-pump working system according to the embodiment of the present application during the operation.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is an enlarged view of a portion B of fig. 2.

FIG. 5 is a schematic diagram of a first pump sub-system according to the present application.

FIG. 6 is a schematic diagram of a second pump subsystem according to the present application.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

When the embodiments of the present application refer to ordinal numbers such as "first", "second", etc., it should be understood that the terms are used for distinguishing only when the context clearly indicates that the order is changed.

When the embodiment of the present application refers to the positional words such as "left", "right", etc., all references are made to the drawings.

As shown in fig. 1 to 6, arrows indicate the direction of air flow, and the illustrated three-way valve is simplified in order to make the drawings more concise and intuitive; as shown in fig. 2, "S" in the figure indicates the signal air pressure flowing out of the twelfth air outlet 3322; as shown in fig. 5 and 6, the dashed lines indicate that the two are not directly connected, but connected through other pneumatic elements, for example, the first three-way valve 14 is connected with the first direction changing valve 11 by dashed lines, which indicates that the air flow at the output end of the first three-way valve 14 can reach the first direction changing valve 11, and the two are not directly connected, but connected through other pneumatic elements; as shown in fig. 5 and 6, the dotted lines show that the motion signal can be transmitted from one pneumatic element to another pneumatic element, for example, the first cylinder 12 is connected with the first three-way valve 14 by the dotted lines, and when the first piston 123 of the first cylinder 12 moves to the left end of the first cylinder 12, the first piston 123 presses against the mechanical mechanism which triggers the first three-way valve 14 to ventilate.

As shown in fig. 1 to 6, an embodiment of the present application provides a dual-pump working system, including an air source, further including: a first pump subsystem comprising a first directional valve 11, a first cylinder 12, a first three-way valve 14 and a second three-way valve 15, the first directional valve 11 comprising a first pneumatic trigger port 115 and a second pneumatic trigger port 116; a second pump subsystem comprising a second directional valve 21, a second cylinder 22, a third three-way valve 24 and a fourth three-way valve 25, the second directional valve 21 comprising a third pneumatic trigger port 215 and a fourth pneumatic trigger port 216; the dual-pump synchronous subsystem comprises a first pneumatic valve 311, a second pneumatic valve 312, a third pneumatic valve 313 and a fourth pneumatic valve 314, wherein the air outlet end of the first three-way valve 14 is communicated with the air inlet end of the first pneumatic valve 311, the first pneumatic valve 311 comprises a first air outlet end and a second air outlet end, the first air outlet end of the first pneumatic valve 311 is communicated with the first pneumatic trigger port 115, the second air outlet end of the first pneumatic valve 311 is respectively communicated with the air inlet end of the second pneumatic valve 312 and the third pneumatic trigger port 215 through a third three-way valve 24, the air outlet end of the second pneumatic valve 312 is communicated with the first pneumatic trigger port 115, the air outlet end of the second three-way valve 15 is communicated with the air inlet end of the third pneumatic valve 313, the third pneumatic valve 313 comprises a third air outlet end and a fourth air outlet end, the third air outlet end of the third pneumatic valve 313 is communicated with the second pneumatic trigger port 116, a fourth air outlet end of the third pneumatic valve 313 is respectively communicated with an air inlet end of the fourth pneumatic valve 314 and the fourth pneumatic trigger port 216 through a fourth three-way valve 25, and an air outlet end of the fourth pneumatic valve 314 is communicated with the second pneumatic trigger port 116.

In this embodiment, the first direction valve 11 and the second direction valve 21 are both pneumatic two-position five-way valves, the first pneumatic valve 311, the second pneumatic valve 312, the third pneumatic valve 313 and the fourth pneumatic valve 314 are all pneumatic two-position three-way valves, and for convenience, it is assumed that the direction of the airflow flowing along the second working port 113 toward the first cylinder 12 is a first direction, the direction of the airflow flowing along the first working port 112 toward the first cylinder 12 is a second direction, the direction of the airflow flowing along the fourth working port 213 toward the second cylinder 22 is a third direction, and the direction of the airflow flowing along the third working port 212 toward the second cylinder 22 is a fourth direction. The first cylinder 12 includes a first piston 123 and the second cylinder 22 includes a second piston 223. The signal air flow of the first pump subsystem is output from the first three-way valve 14 and enters the third three-way valve 24 through the second air outlet end of the first pneumatic valve 311, and then is divided into two air flows, wherein one air flow enters the third pneumatic trigger port 215, so that the valve core of the second directional valve 21 starts to move, and further the working air flow of the second directional valve 21 flows along the third direction, so that the second piston 223 moves to the right, and meanwhile, the other air flow enters the first pneumatic trigger port 115 through the second pneumatic valve 312, so that the valve core of the first directional valve 11 starts to move, and further the working air flow of the first directional valve 11 flows along the first direction, so that the first piston 123 moves to the right, and therefore, the first piston 123 and the second piston 223 start to move to the right synchronously; or the signal air flow of the first pump subsystem is output from the second three-way valve 15 and enters the fourth three-way valve 25 through the fourth air outlet end of the third pneumatic valve 313, and then is divided into two air flows, wherein one air flow enters the fourth pneumatic trigger port 216, so that the valve core of the second directional valve 21 starts to move, and further the working air flow of the second directional valve 21 flows along the fourth direction, and further the second piston 223 moves to the left, and the other air flow enters the second pneumatic trigger port 116 through the fourth pneumatic valve 314, so that the valve core of the first directional valve 11 starts to move, and further the working air flow of the first directional valve 11 flows along the second direction, and thus the first piston 123 moves to the left, and it can be known that the first piston 123 and the second piston 223 start to move to the left synchronously. Because in refrigerant system, first piston 123 connects first refrigerant jar, and second piston 223 connects the second refrigerant jar, so two refrigerant jar synchronous motion, the two pump work system of this application embodiment make two refrigerant pumps supply the refrigerant in step, the two pump work system of this application embodiment only needs the air supply, need not to add the power, so the cost is lower.

Further, the first three-way valve 14 includes a first air outlet 142, the first pneumatic valve 311 includes a first air inlet 3111, a second air outlet 3112 and a third air outlet 3113, the third three-way valve 24 includes a second air inlet 241 and a fourth air outlet 242, and the second pneumatic valve 312 includes a third air inlet 3121, a fifth air outlet 3122 and a first blocked air port 3123; the first air outlet 142 is communicated with the first air inlet 3111, the second air outlet 3112 is communicated with the first air pressure trigger port 115, the third air outlet 3113 is communicated with the second air inlet 241, the fourth air outlet 242 is respectively communicated with the third air pressure trigger port 215 and the third air inlet 3121, the fifth air outlet 3122 is communicated with the first air pressure trigger port 115, and a first plug is arranged on the first air blocking port 3123; the second three-way valve 15 includes a sixth air outlet 152, the third pneumatic valve 313 includes a fourth air inlet 3131, a seventh air outlet 3132 and an eighth air outlet 3133, the fourth three-way valve 25 includes a fifth air inlet 251 and a ninth air outlet 252, and the fourth pneumatic valve 314 includes a sixth air inlet 3141, a tenth air outlet 3142 and a second air blocking port 3143; the sixth air outlet 152 is communicated with the fourth air inlet 3131, the seventh air outlet 3132 is communicated with the second pneumatic trigger port 116, the eighth air outlet 3133 is communicated with the fifth air inlet 251, the ninth air outlet 252 is respectively communicated with the fourth pneumatic trigger port 216 and the sixth air inlet 3141, the tenth air outlet 3142 is communicated with the second pneumatic trigger port 116, and the second air blocking port 3143 is provided with a second plug.

When the first pump subsystem works alone, the first pump subsystem outputs a first air pressure signal, the first air pressure signal is directly input into the first air pressure trigger port 115 through the first pneumatic three-way valve 311, so that the working air flow of the first reversing valve 11 is reversed, or the first pump subsystem outputs a second air pressure signal, the second air pressure signal is directly input into the second air pressure trigger port 116 through the third pneumatic three-way valve 313, so that the working air flow of the first reversing valve 11 is reversed; when the double pumps work synchronously, the first pump subsystem outputs a first air pressure signal, the first air pressure signal is respectively input into the third air pressure trigger port 215 and the first air pressure trigger port 115 through the first air operated valve 311, so that the second reversing valve 21 and the first reversing valve 11 are synchronously triggered to synchronously realize the reversing function, or the first pump subsystem outputs a second air pressure signal, the second air pressure signal is respectively input into the fourth air pressure trigger port 216 and the second air pressure trigger port 116 through the third air operated three-way valve 313, so that the second reversing valve 21 and the first reversing valve 11 are synchronously triggered to synchronously realize the reversing function.

Further, the double-pump working system further comprises a third switch 4, a first end of the third switch 4 is communicated with an air source, a second end of the third switch 4 is communicated with the first air pressure trigger port 115 through a first one-way valve 51, and the second end is also communicated with the third air pressure trigger port 215 through a second one-way valve 52. The third switch 4 adopts a normally closed mechanical three-way valve 41, if the two pumps are required to work synchronously to supply more refrigerants but the initial working states of the first pump subsystem and the second pump subsystem are inconsistent, the third switch 4 can be pressed to enable the airflow of the air source to act on the first air pressure trigger port 115 and the third air pressure trigger port 215 synchronously, so that the first reversing valve 11 and the second reversing valve 21 are forced to realize the reversing function synchronously, and the first pump subsystem and the second pump subsystem have corresponding working states.

Further, a third switch 4 is connected in series with the air source, and is provided with: a fifth pneumatic valve 331 including a seventh air inlet 3311, an eleventh air outlet 3312 and a fifth pneumatic trigger 3315, wherein the air source is communicated with the seventh air inlet 3311, and an air flow input end of the first pump subsystem is communicated with the fifth pneumatic trigger 3315; and a sixth pneumatic valve 332 comprising an eighth air inlet 3321, a twelfth air outlet 3322 and a sixth pneumatic trigger port 3325, wherein the eleventh air outlet 3312 is connected to the eighth air inlet 3321, the twelfth air outlet 3322 is connected to a third switch 4, and the air flow input end of the second pump subsystem is connected to the sixth pneumatic trigger port 3325.

In this embodiment, the fifth pneumatic valve 331 and the sixth pneumatic valve 332 are both normally closed pneumatic two-position and three-way valves. The first case: when the first pump subsystem and the second pump subsystem are both communicated with the air source, the air flow enters the fifth air pressure trigger port 3315, so that the seventh air inlet 3311 is communicated with the eleventh air outlet 3312, and simultaneously, the air flow enters the sixth air pressure trigger port 3325, so that the eighth air inlet 3321 is communicated with the twelfth air outlet 3322, therefore, the air flow of the air source sequentially passes through the fifth pneumatic valve 331 and the sixth pneumatic valve 332 and flows out from the twelfth air outlet 3322 to the third switch 4, and when the first pump subsystem and the second pump subsystem are simultaneously communicated with the air source, the normally closed mechanical three-way valve 41 is pressed and released, so that the first reversing valve 11 and the second reversing valve 21 synchronously realize the reversing function. The second case: when the first pump subsystem is communicated with the air source and the second pump subsystem is not communicated with the air source, no air flow acts on the sixth air pressure trigger port 3325 because the second pump subsystem does not have the air flow from the air source, and further the eighth air inlet 3321 and the twelfth air outlet 3322 are not communicated, so that no air flow is output from the eighth air outlet 3322. The third situation: when the first pump subsystem is not connected to the air source and the second pump subsystem is connected to the air source, no air flow acts on the fifth air pressure trigger port 3315 because the first pump subsystem does not have an air flow from the air source, and thus the seventh air inlet 3311 and the eleventh air outlet 3312 are not connected, and thus no air flow is output from the eleventh air outlet 3312, and thus no air flow is output from the twelfth air outlet 3322. In view of the above three situations, it can be seen that the twelfth air outlet 3322 outputs air flow only when the first pump subsystem and the second pump subsystem are both connected to the air source.

Further, the second pump subsystem further comprises: the seventh pneumatic valve 26 comprises a ninth air inlet 261, a thirteenth air outlet 262, a third air blocking port 263 and a seventh air pressure trigger port 265, the air flow input end of the second pump subsystem is communicated with the ninth air inlet 261, the thirteenth air outlet 262 is communicated with the second air inlet 241, the twelfth air outlet 3322 is communicated with the seventh air pressure trigger port 265, and the third air blocking port 263 is provided with a third air blocking head; the eighth pneumatic valve 27 includes a tenth air port 271, a fourteenth air outlet 272, a fourth air blocking port 273 and an eighth pneumatic trigger port 275, the airflow input end of the second pump subsystem is communicated with the tenth air port 271, the fourteenth air outlet 272 is communicated with the fifth air inlet 251, the twelfth air outlet 3322 is communicated with the eighth pneumatic trigger port 275, and the fourth air blocking port 273 is provided with a fourth air blocking head.

The seventh and eighth air-operated valves 26 and 27 of the present embodiment are both pneumatic two-position, three-way valves. The first case: when the first pump subsystem and the second pump subsystem are communicated with the air source, the twelfth air outlet 3322 outputs air flow, the air flow respectively acts on the seventh air pressure trigger port 265 and the eighth air pressure trigger port 275, so that the ninth air inlet 261 is connected with the third air blocking port 263, and the tenth air blocking port 271 is connected with the fourth air blocking port 273, so that the eleventh pneumatic three-way valve 26 and the twelfth pneumatic three-way valve 27 both output no air flow, and further when the first pump subsystem and the second pump subsystem work synchronously, the first pump subsystem and the second pump subsystem receive air pressure signals from the first pump subsystem uniformly, and the synchronous work of the first pump subsystem and the second pump subsystem is ensured. The second case: when the second pump subsystem is independently communicated with the air source, no air flow is output from the twelfth air outlet 3322, the ninth air inlet 261 is communicated with the thirteenth air outlet 262, the tenth air outlet 271 is communicated with the fourteenth air outlet 272, so that the air flow input end of the second pump subsystem is communicated with the third three-way valve 24 through the seventh pneumatic valve 26, the air flow input end of the second pump subsystem is communicated with the fourth three-way valve 25 through the eighth pneumatic valve 27, and further, the air flow output is realized when the third three-way valve 24 or the fourth three-way valve 25 is triggered.

Further, the first pneumatic valve 311 further includes a ninth pneumatic trigger port 3115, the second pneumatic valve 312 further includes a tenth pneumatic trigger port 3125, the third pneumatic valve 313 further includes an eleventh pneumatic trigger port 3135, the fourth pneumatic valve 314 further includes a twelfth pneumatic trigger port 3145, and the twelfth air outlet 3322 is respectively communicated with the ninth pneumatic trigger port 3115, the tenth pneumatic trigger port 3125, the eleventh pneumatic trigger port 3135 and the twelfth pneumatic trigger port 3145. The airflow of the twelfth air outlet 3322 acts on the ninth air pressure trigger port 3115, the tenth air pressure trigger port 3125, the eleventh air pressure trigger port 3135 and the twelfth air pressure trigger port 3145 respectively, so that the first air inlet 3111 and the third air outlet 3113 are communicated, the third air inlet 3121 and the fifth air outlet 3122 are communicated, the fourth air inlet 3131 and the eighth air outlet 3133 are communicated, and the sixth air inlet 3141 and the tenth air outlet 3142 are communicated, so as to realize the airflow direction when the first pump subsystem and the second pump subsystem work synchronously.

Further, the airflow input end of the first pump subsystem is provided with a first switch 13 for closing or opening the airflow, and the airflow input end of the second pump subsystem is provided with a second switch 23 for closing or opening the airflow. And when only the first switch 13 is turned on, the first pump subsystem is connected with the air source, when only the second switch 23 is turned on, the second pump subsystem is communicated with the air source, and when the first switch 13 is turned on and the second switch 23 is turned on, the first pump subsystem and the second pump subsystem are both communicated with the air source.

Further, the first cylinder 12 includes a first rod chamber 124 and a first rod chamber 125, the first direction valve 11 includes an eleventh air inlet 111, a first working port 112 and a second working port 113, the first air output end 131 of the first switch 13 is communicated with the eleventh air inlet 111, the first working port 112 is connected to the first rod chamber 124, and the second working port 113 is connected to the first rod chamber 125; the second cylinder 22 includes a second rod chamber 224 and a second rodless chamber 225, the second directional valve 21 includes a twelfth air inlet 211, a third working port 212 and the fourth working port 213, the second air output end 231 of the second switch 23 is communicated with the twelfth air inlet 211, the third working port 212 is connected to the second rod chamber 224, and the fourth working port 213 is connected to the second rodless chamber 225.

When the eleventh air inlet 111 and the first working port 112 are communicated, the air flow at the input end of the first pump subsystem enters the eleventh air inlet 111, flows out of the first working port 112 and enters the first rod cavity 124 of the first air cylinder 12, then acts on the first piston 123 to make the first piston 123 move leftwards to do work, and when the eleventh air inlet 111 and the second working port 113 are communicated, the air flow at the input end of the first pump subsystem enters the eleventh air inlet 111, flows out of the second working port 113 and enters the first rod cavity 125 of the first air cylinder 12, then acts on the first piston 123 to make the first piston 123 move rightwards to do work; when the twelfth air inlet 211 is communicated with the third working port 212, the air flow at the input end of the second pump subsystem enters the twelfth air inlet 211, flows out of the third working port 212 and enters the second rod cavity 224 of the second air cylinder 22, then acts on the second piston 223 to enable the second piston 223 to move leftwards to do work, and when the twelfth air inlet 211 is communicated with the fourth working port 213, the air flow at the input end of the second pump subsystem enters the twelfth air inlet 211, flows out of the fourth working port 213 and enters the second rodless cavity 225 of the second air cylinder 22, then acts on the second piston 223 to enable the second piston 223 to move rightwards to do work.

Further, the first three-way valve 14 further includes a thirteenth air inlet 141 and a first signal input end 145, the first air flow output end 131 of the first switch 13 is communicated with the thirteenth air inlet 141, and one end of the first cylinder 12 close to the first rod chamber 124 is connected to the first signal input end 145; the second three-way valve 15 further includes a fourteenth air inlet 151 and a second signal input end 155, the first air flow output end 131 of the first switch 13 is communicated with the fourteenth air inlet 151, and one end of the first cylinder 12 close to the first rod chamber 125 is connected to the second signal input end 155.

When the first piston 123 moves to the left end of the first cylinder 12, the first signal control terminal 145 receives a signal, so that the thirteenth air inlet 141 is connected to the first air outlet 142, and the air flow at the input end of the first pump subsystem flows out from the first air outlet 142 to the first pneumatic valve 311 through the first three-way valve 14; when the first piston 123 moves to the right end of the first cylinder 12, the second signal control end 155 receives a signal, so that the fourteenth air inlet 151 and the sixth air outlet 152 are connected, and the air flow at the input end of the first pump subsystem flows out from the sixth air outlet 152 to the third air-operated valve 313 through the second three-way valve 15.

Further, the third three-way valve 24 further includes a third signal input end 245, and one end of the second cylinder 22 close to the second rodless cavity 225 is connected to the third signal input end 245; the fourth three-way valve 25 further includes a fourth signal input 255, and an end of the second cylinder 22 adjacent to the second rod chamber 224 is connected to the fourth signal input 255.

When the second piston 223 moves to the left end of the second cylinder 22, the third signal control end 245 receives a signal, so that the second air inlet 241 is connected with the fourth air outlet 242, and the air flow output by the first pneumatic valve 311 (the two pumps work synchronously) or the air flow output by the seventh pneumatic valve 26 (the second pump subsystem works alone) flows out from the fourth air outlet 242 to the second direction changing valve 21 and the second pneumatic valve 312 through the third three-way valve 24; when the second piston 223 moves to the right end of the second cylinder 22, the fourth signal control terminal 255 receives a signal, so that the fifth air inlet 251 and the ninth air outlet 252 are connected, and the air flow outputted from the second pneumatic valve 312 (the two pumps work synchronously) or the air flow outputted from the eighth pneumatic valve 27 (the second pump subsystem works alone) flows out from the ninth air outlet 252 to the second direction changing valve 21 and the fourth pneumatic valve 314 through the fourth three-way valve 25.

To better understand the technical solution of the present embodiment, the working principle is as follows:

double-pump synchronous working mode: simultaneously opening the first switch 13 and the second switch 23, the pneumatic pressure acts on the fifth pneumatic trigger port 3315 of the fifth pneumatic valve 331 and the sixth pneumatic trigger port 3325 of the sixth pneumatic valve 332, such that the seventh air inlet 3311 and the eleventh air outlet 3312 of the fifth pneumatic valve 331 communicate with each other, and the eighth air inlet 3321 and the twelfth air outlet 3322 of the sixth pneumatic valve 332 communicate with each other, and after the pneumatic flow of the pneumatic source passes through the fifth pneumatic valve 331 and the sixth pneumatic valve 332, the pneumatic flow of the pneumatic source simultaneously acts on the first pneumatic valve 311, the second pneumatic valve 312, the third pneumatic valve 313, the fourth pneumatic valve 314, the seventh pneumatic valve 26, the eighth pneumatic valve 27, and the third switch 4, such that the first air inlet 3111 and the third air outlet 3113 of the first pneumatic valve 311 communicate with each other, the third air inlet 3121 and the fifth air outlet 3122 of the second pneumatic valve 312 communicate with each other, the fourth air inlet 3131 and the eighth air outlet 3133 of the third pneumatic valve 313 communicate with each other, and the sixth air outlet 3141 and the tenth air outlet 3142 of the fourth pneumatic valve 314 communicate with each other, The ninth intake port 261 and the third blocking port 263 of the seventh air-operated valve 26 are communicated, the seventh air-operated valve 26 is not vented, the tenth port 271 and the fourth blocking port 273 of the eighth air-operated valve 27 are communicated, and the eighth air-operated valve 27 is not vented; when the first piston 123 moves to the left end of the first cylinder 12, the first three-way valve 14 is triggered to vent, the output air flow of the first three-way valve 14 reaches the third three-way valve 24 through the first pneumatic valve 311, at this time, if the second piston 223 moves to the right, the third three-way valve 24 is in a state of not being triggered, that is, the third three-way valve 24 does not vent, so the air flow functioning as a signal is disconnected by the third three-way valve 24, and of course, the second piston 223 still moves to the rightmost end of the second cylinder 22, and the fourth three-way valve 25 is triggered to vent, but the air inlet end of the fourth three-way valve does not have air flow. To sum up, when the first piston 123 moves to the left end of the first cylinder 12, if the second piston 223 moves to the right, no signal airflow acts on the first direction changing valve 11 or the second direction changing valve 21, and both the first cylinder 12 and the second cylinder 22 stop working, which is one of the cases that the first cylinder 12 and the second cylinder 22 are not synchronous, then, by pressing the third switch 4, the airflow of the air source synchronously acts on the first air pressure trigger port 115 and the third air pressure trigger port 215, the working airflow of the first direction changing valve 11 is forced to move in the first direction, and then the first piston 123 moves to the right, and meanwhile, the working airflow of the second direction changing valve 21 is forced to move in the third direction, and then the second piston 223 also synchronously starts to move to the right. When the first piston 123 moves to the right end of the first cylinder 12, the second three-way valve 15 receives a signal, then an air flow is output, the output air flow reaches the fourth three-way valve 25 through the third air-operated valve 313, and since the fourth three-way valve 25 is also triggered when the second piston 223 reaches the right end of the second cylinder 22, so that the fourth three-way valve 25 is ventilated, the air reaching the fourth three-way valve 25 through the third air-operated valve 313 can pass through the fourth three-way valve 25, and then acts on the second direction-changing valve 21 and the first direction-changing valve 11 respectively, so that the working air flows of the second direction-changing valve 21 and the first direction-changing valve 11 are almost simultaneously changed, the first piston 123 and the second piston 223 start to move to the left at the same time, and thus, the first cylinder 12 and the second cylinder 22 move synchronously. In the refrigerant system, the first cylinder 12 is connected with the first refrigerant cylinder, and the second cylinder is connected with the second refrigerant cylinder, so that the two refrigerant cylinders move synchronously.

First pump subsystem individual operating mode: when the first switch 13 is opened and the second switch 23 is closed, the fifth air-operated valve 331 is vented but the sixth air-operated valve 332 is not vented, so that the twelfth air outlet 3322 of the sixth air-operated valve 332 is not discharged, the first air inlet 3111 and the second air outlet 3112 of the first air-operated valve 311 are communicated, the fourth air inlet 3131 and the seventh air outlet 3132 of the third air-operated valve 313 are communicated, the third air inlet 3121 and the first block air port 3123 of the second air-operated valve 312 are communicated, the second air-operated valve 312 is not vented, the sixth air inlet 3141 and the second block air port 3143 of the fourth air-operated valve 314 are communicated, and the fourth air-operated valve 314 is not vented. When the first piston 123 moves to the left end of the first cylinder 12, the first three-way valve 14 receives a signal and outputs an air flow, the air flow is divided into three air flows after flowing out from the second air outlet 3112 through the first pneumatic valve 311, the first air flow reversely flows to the first one-way valve 51 and is blocked, the second air flow flows to the second pneumatic valve 312 and is blocked, and the third air flow flows into the first pneumatic trigger port 115 of the first reversing valve 11, so that the working air flow of the first reversing valve 11 moves along the first direction, and the first piston 123 moves to the right; when the first piston 123 moves to the right end of the first cylinder 12, the second three-way valve 15 receives a signal and outputs an air flow, the air flow reaches the third pneumatic valve 313, and then flows out from the seventh air outlet 3132 to be divided into two air flows, one of the air flows reaches the fourth pneumatic valve 314 to be blocked, the other air flow reaches the second pneumatic trigger port 116 of the first direction changing valve 11, so that the working air flow of the first direction changing valve 11 moves in the second direction, and the first piston 123 moves to the left. The above-mentioned steps are cyclically repeated, so that one refrigerant cylinder can output refrigerant.

Second pump subsystem individual operating mode: the first switch 13 is closed and the second switch 23 is opened, and since the sixth pneumatic valve 332 is vented but the fifth pneumatic valve 331 is not vented, the twelfth air outlet 3322 of the sixth pneumatic valve 332 is not discharged with a flow of air, and further the third air inlet 3121 and the first blocked air port 3123 of the second pneumatic valve 312 are communicated, the second pneumatic valve 312 is not vented, the sixth air inlet 3141 and the second blocked air port 3143 of the fourth pneumatic valve 314 are communicated, the fourth pneumatic valve 314 is not vented, the ninth air inlet 261 and the thirteenth air outlet 262 of the seventh pneumatic valve 26 are communicated, and the tenth air inlet 271 and the fourteenth air outlet 272 of the eighth pneumatic valve 27 are communicated. When the second piston 223 moves to the left end of the second cylinder 22, the third three-way valve 24 receives a signal and outputs an air flow, the air flow is blocked when flowing to the second check valve 52, the air flow is blocked when flowing to the fourth pneumatic valve 314, and only the air flow can flow to the third pneumatic trigger port 215 of the second directional valve 21, so that the working air flow of the second directional valve 21 moves in the third direction and the second piston 223 moves to the right; when the second piston 223 moves to the right end of the second cylinder 22, the fourth three-way valve 25 receives a signal and outputs a flow, the flow to the fourth pneumatic valve 314 is blocked, and the flow to the fourth pneumatic trigger port 216 of the second directional valve 21 causes the working air flow of the second directional valve 21 to move in the fourth direction and the second piston 223 to move to the left. The above-mentioned operation is repeated so as to make another refrigerant cylinder output refrigerant.

This embodiment double pump operating system need not to add the power, make full use of the air current of air supply, solve two refrigerant pumps and supply the higher problem of the required cost of refrigerant simultaneously, and the user can switch single pump mode or double pump mode by oneself according to actual conditions moreover.

In summary, the present application has, but is not limited to, the following beneficial effects:

1. when the signal airflow of the first pump subsystem starts to be output and simultaneously input into the first air pressure trigger port 115 and the third air pressure trigger port 215, the valve core of the first reversing valve 11 starts to move, and then the working airflow is reversed, so that the first piston 123 of the first air cylinder 12 moves to the right, and simultaneously the valve core of the second reversing valve 21 starts to move, and then the working airflow is reversed, so that the second piston 223 of the second air cylinder moves to the right, and thus, the first piston 123 and the second piston 223 synchronously start to move to the right; when the signal airflow of the first pump subsystem starts to be output and simultaneously input into the second pneumatic trigger port 116 and the fourth pneumatic trigger port 216, the spool of the first directional valve 11 starts to move, and then the working airflow is reversed, so that the first piston 123 of the first cylinder 12 moves to the left, and simultaneously the spool of the second directional valve 21 starts to move, and then the working airflow is reversed, so that the second piston 223 of the second cylinder moves to the left, and thus, the first piston 123 and the second piston 223 synchronously start to move to the left. Because in refrigerant system, first piston 123 connects first refrigerant jar, and the second piston connects the second refrigerant jar, so two refrigerant jar synchronous motion, the two refrigerant pumps supply the refrigerant in step for this application embodiment dual pump operating system, this application embodiment dual pump operating system only needs the air supply, need not to add the power, so the cost is lower.

2. When the first cylinder 12 and the second cylinder 22 need to move synchronously, if the initial movement states of the first cylinder 12 and the second cylinder 22 are inconsistent, the third switch 4 is opened to force the valve cores of the first reversing valve 11 and the second reversing valve 21 to be at corresponding positions, so that the first cylinder 12 and the second cylinder 22 move synchronously, and the two refrigerant pumps supply the refrigerant synchronously.

3. The first pump subsystem and the second pump subsystem can work synchronously, and any pump can work independently, so that a user can determine the working mode of the double-pump working system according to the specific demand condition of a load end refrigerant.

It should be noted that, the pneumatic three-way valve and the two-position five-way valve are both relatively common pneumatic elements, which are well known and common to those skilled in the art, and therefore, detailed descriptions on specific structures, working principles, and the like of the pneumatic three-way valve and the two-position five-way valve are not provided herein, but do not affect the implementation of the technical solution by those skilled in the art.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.

Claims (10)

1. A dual pump work system comprising a gas source, further comprising:

the first pump subsystem comprises a first reversing valve (11), a first cylinder (12), a first three-way valve (14) and a second three-way valve (15), wherein the first reversing valve (11) comprises a first air pressure trigger port (115) and a second air pressure trigger port (116);

a second pump subsystem comprising a second directional valve (21), a second cylinder (22), a third three-way valve (24) and a fourth three-way valve (25), the second directional valve (21) comprising a third pneumatic trigger port (215) and a fourth pneumatic trigger port (216);

the double-pump synchronous subsystem comprises a first pneumatic valve (311), a second pneumatic valve (312), a third pneumatic valve (313) and a fourth pneumatic valve (314), wherein the air outlet end of the first three-way valve (14) is communicated with the air inlet end of the first pneumatic valve (311), the first pneumatic valve (311) comprises a first air outlet end and a second air outlet end, the first air outlet end of the first pneumatic valve (311) is communicated with the first air pressure trigger port (115), the second air outlet end of the first pneumatic valve (311) is communicated with the air inlet end of the second pneumatic valve (312) and the third air pressure trigger port (215) through a third three-way valve (24), the air outlet end of the second pneumatic valve (312) is communicated with the first air pressure trigger port (115), the air outlet end of the second pneumatic valve (15) is communicated with the air inlet end of the third pneumatic valve (313), and the third pneumatic valve (313) comprises a third air outlet end and a fourth air outlet end, and the third air outlet end of the third air-operated valve (313) is communicated with the second air pressure trigger port (116), the fourth air outlet end of the third air-operated valve (313) is respectively communicated with the air inlet end of the fourth air-operated valve (314) and the fourth air pressure trigger port (216) through a fourth three-way valve (25), and the air outlet end of the fourth air-operated valve (314) is communicated with the second air pressure trigger port (116).

2. The dual pump work system of claim 1,

the first three-way valve (14) comprises a first air outlet (142), the first pneumatic valve (311) comprises a first air inlet (3111), a second air outlet (3112) and a third air outlet (3113), the third three-way valve (24) comprises a second air inlet (241) and a fourth air outlet (242), and the second pneumatic valve (312) comprises a third air inlet (3121), a fifth air outlet (3122) and a first blocking port (3123);

the first air outlet (142) is communicated with the first air inlet (3111), the second air outlet (3112) is communicated with the first air pressure trigger port (115), the third air outlet (3113) is communicated with the second air inlet (241), the fourth air outlet (242) is respectively communicated with the third air pressure trigger port (215) and the third air inlet (3121), the fifth air outlet (3122) is communicated with the first air pressure trigger port (115), and a first choke plug is arranged on the first choke port (3123);

the second three-way valve (15) comprises a sixth air outlet (152), the third pneumatic valve (313) comprises a fourth air inlet (3131), a seventh air outlet (3132) and an eighth air outlet (3133), the fourth three-way valve (25) comprises a fifth air inlet (251) and a ninth air outlet (252), the fourth pneumatic valve (314) comprises a sixth air inlet (3141), a tenth air outlet (3142) and a second blocking air outlet (3143);

the sixth air outlet (152) is communicated with the fourth air inlet (3131), the seventh air outlet (3132) is communicated with the second air pressure trigger port (116), the eighth air outlet (3133) is communicated with the fifth air inlet (251), the ninth air outlet (252) is respectively communicated with the fourth air pressure trigger port (216) and the sixth air inlet (3141), the tenth air outlet (3142) is communicated with the second air pressure trigger port (116), and a second plug is arranged on the second plug port (3143).

3. The dual pump working system according to claim 2, further comprising a third switch (4), a first end of the third switch (4) being in communication with a gas source, a second end of the third switch (4) being in communication with the first pneumatic triggering port (115) through a first one-way valve (51), the second end being in communication with the third pneumatic triggering port (215) also through a second one-way valve (52).

4. A double pump working system according to claim 3, wherein between the third switch (4) and the gas source there is arranged in series:

a fifth pneumatic valve (331) comprising a seventh air inlet (3311), an eleventh air outlet (3312) and a fifth air pressure trigger port (3315), wherein the air source is communicated with the seventh air inlet (3311), and the air flow input end of the first pump subsystem is communicated with the fifth air pressure trigger port (3315);

a sixth pneumatic valve (332) comprising an eighth air inlet (3321), a twelfth air outlet (3322) and a sixth pneumatic trigger port (3325), wherein the eleventh air outlet (3312) is connected to the eighth air inlet (3321), the twelfth air outlet (3322) is connected to a third switch (4), and the airflow input end of the second pump subsystem is connected to the sixth pneumatic trigger port (3325).

5. The dual pump work system of claim 4, wherein the second pump subsystem further comprises:

the seventh pneumatic valve (26) comprises a ninth air inlet (261), a thirteenth air outlet (262), a third blocking port (263) and a seventh air pressure triggering port (265), the air flow input end of the second pump subsystem is communicated with the ninth air inlet (261), the thirteenth air outlet (262) is communicated with the second air inlet (241), the twelfth air outlet (3322) is communicated with the seventh air pressure triggering port (265), and the third blocking port (263) is provided with a third blocking head;

the eighth pneumatic valve (27) comprises a tenth air port (271), a fourteenth air outlet (272), a fourth air blocking port (273) and an eighth air pressure triggering port (275), the air flow input end of the second pump subsystem is communicated with the tenth air port (271), the fourteenth air outlet (272) is communicated with the fifth air inlet (251), the twelfth air outlet (3322) is communicated with the eighth air pressure triggering port (275), and a fourth plug is arranged on the fourth air blocking port (273).

6. The dual pump operating system of claim 5, wherein the first pneumatic valve (311) further includes a ninth pneumatic trigger port (3115), the second pneumatic valve (312) further includes a tenth pneumatic trigger port (3125), the third pneumatic valve (313) further includes an eleventh pneumatic trigger port (3135), and the fourth pneumatic valve (314) further includes a twelfth pneumatic trigger port (3145), and the twelfth air outlet port (3322) is in communication with the ninth pneumatic trigger port (3115), the tenth pneumatic trigger port (3125), the eleventh pneumatic trigger port (3135), and the twelfth pneumatic trigger port (3145), respectively.

7. Double pump working system according to claim 6, wherein the gas flow input of the first pump sub-system is provided with a first switch (13) for closing or opening the gas flow, and the gas flow input of the second pump sub-system is provided with a second switch (23) for closing or opening the gas flow.

8. The dual pump work system of claim 7,

the first cylinder (12) comprises a first rod cavity (124) and a first rodless cavity (125), the first reversing valve (11) comprises an eleventh air inlet (111), a first working port (112) and a second working port (113), a first air flow output end (131) of the first switch (13) is communicated with the eleventh air inlet (111), the first working port (112) is connected into the first rod cavity (124), and the second working port (113) is connected into the first rodless cavity (125);

the second cylinder (22) comprises a second rod cavity (224) and a second rodless cavity (225), the second reversing valve (21) comprises a twelfth air inlet (211), a third working port (212) and a fourth working port (213), a second air flow output end (231) of the second switch (23) is communicated with the twelfth air inlet (211), the third working port (212) is connected into the second rod cavity (224), and the fourth working port (213) is connected into the second rodless cavity (225).

9. The dual pump work system of claim 8,

the first three-way valve (14) further comprises a thirteenth air inlet (141) and a first signal access end (145), the first air flow output end (131) of the first switch (13) is communicated with the thirteenth air inlet (141), and one end, close to the first rodless cavity (125), of the first air cylinder (12) is connected with the first signal access end (145);

the second three-way valve (15) further comprises a fourteenth air inlet (151) and a second signal access end (155), the first air flow output end (131) of the first switch (13) is communicated with the fourteenth air inlet (151), and one end, close to the first rod cavity (124), of the first air cylinder (12) is connected with the second signal access end (155).

10. The dual pump work system of claim 9,

the third three-way valve (24) further comprises a third signal access end (245), and one end, close to the second rodless cavity (225), of the second cylinder (22) is connected with the third signal access end (245); the fourth three-way valve (25) further comprises a fourth signal input end (255), and one end, close to the second rod cavity (224), of the second cylinder (22) is connected with the fourth signal input end (255).

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