CN216885306U - Automatic vacuum valve station control system - Google Patents

Abstract

The utility model provides an automatic vacuum valve station control system, comprising: the mould is provided with a mould cavity which is provided with a plurality of connecting ports for vacuumizing; the valve station is provided with a plurality of air inlets correspondingly connected with the connecting ports at one end, a first outlet and a second outlet at the other end, and a plurality of channels are arranged in the valve station to communicate the air inlets with the first outlet and the second outlet; the vacuum system comprises a first vacuum pump group and a second vacuum pump group; the air inlet end of the first vacuum pump group is connected with a first vacuum outlet, and the air inlet end of the second vacuum pump group is connected with a second vacuum outlet; the valve station is positioned in a production workshop relatively close to the mold, the vacuum system is positioned in a vacuum station room far away from the mold, and the control module controls the valve to act so as to control the on-off of the channels. The chaotic switch can not be caused, the production error rate is reduced, and the space occupancy rate and the noise of a production workshop are reduced.

Description

Automatic vacuum valve station control system

Technical Field

The utility model belongs to the technical field of molds, and particularly relates to an automatic vacuum valve station control system.

Background

The composite material formed product manufactured by the vacuum leading-in process has the advantages of high surface quality, less defects such as air holes and the like, high strength and the like, and is more and more widely applied to the mold forming industry. Laying a reinforcing material on the mould, laying a vacuum bag, pumping out air in the system, forming a negative pressure in the mould cavity, pressing unsaturated resin into the fiber lamination layer through a pre-laid pipeline by using the pressure generated by vacuum, so that the resin is infiltrated with the reinforcing material and finally the whole mould is filled with the reinforcing material, and removing the vacuum bag material after the product is cured to obtain the required product from the mould.

The existing composite material vacuum system is generally transported to a vacuum suction point by a pipeline by adopting a field type vacuum pump or installing a vacuum station house. However, the on-site vacuum pump system has the disadvantages of loud operation noise and occupying production space. Although the vacuum station house is installed at a place far away from the site and is conveyed to a plurality of vacuum use points on the site through the pipeline, the communication or the stop of the pipeline is controlled through the manual valve on the pipeline during use, so that the starting and the stopping of the vacuumizing operation are controlled, but because the pipeline valves of the use points are too many, the switching errors are easily caused, the production error cost is generated, the production materials are wasted, and the production cost is improved.

SUMMERY OF THE UTILITY MODEL

In view of the above-identified deficiencies or inadequacies in the prior art, the present invention is directed to an automatic vacuum valve station control system.

In order to achieve the above purpose, the embodiment of the utility model adopts the following technical scheme:

an automated vacuum valve station control system comprising: the mould is provided with a mould cavity, one end of the mould cavity is connected with the pouring end, and the other end of the mould cavity is provided with a plurality of connecting ports for vacuumizing; the valve station is provided with a plurality of air inlets correspondingly connected with the connecting ports at one end, a first outlet and a second outlet at the other end, a plurality of channels are arranged in the valve station to communicate the air inlets with the first outlet and the second outlet, a plurality of valves for controlling the on-off of the channels are arranged on each channel, and the valves are connected with the control module; the vacuum system comprises a first vacuum pump group and a second vacuum pump group; the air inlet end of the first vacuum pump group is connected with a first vacuum outlet, and the air inlet end of the second vacuum pump group is connected with a second vacuum outlet; the valve station is positioned in a production workshop relatively close to the mold, the vacuum system is positioned in a vacuum station room far away from the mold, and the control module controls the valve to act so as to control the on-off of the channels.

According to the technical scheme provided by the embodiment of the application, the mold cavity comprises a vacuum bag paved on the surface of the mold and a fiber lamination layer paved along the surface of the mold in the vacuum bag.

According to the technical scheme provided by the embodiment of the application, the mould comprises a first mould and a second mould; the first mould surface is provided with a first mould cavity, and the second mould surface is provided with a second mould cavity; the connecting port comprises a first connecting port and a second connecting port; the first connecting port comprises a first adsorption port, a first rescue port and a first filling port; the second connecting port comprises a second adsorption port, a second rescue port and a second filling port.

According to the technical scheme provided by the embodiment of the application, a local pump is further arranged in the valve station, the channel comprises a rescue channel, and the rescue channel comprises a first rescue channel and a second rescue channel; one end of the first rescue channel is communicated with the air inlet end of the local pump, and the other end of the first rescue channel is communicated with the first rescue port; a third valve and a fourth valve are sequentially arranged on the first rescue channel in the direction of the air inlet end of the local pump, and the third valve and the fourth valve act simultaneously to control the on-off of the first rescue channel; one end of the second rescue channel is communicated with the air inlet end of the local pump, and the other end of the second rescue channel is communicated with the second rescue port; and a thirteenth valve and a fourteenth valve are sequentially arranged on the second rescue channel in the direction of the air inlet end of the local pump, and the thirteenth valve and the fourteenth valve act simultaneously to control the on-off of the second rescue channel.

According to the technical scheme that this application embodiment provided, local pump includes first local pump and second local pump, the inlet end intercommunication of first local pump and second local pump is equipped with the twenty first valve on the pipeline of intercommunication.

According to the technical scheme provided by the embodiment of the application, the channel comprises:

one end of the first pre-pumping channel is connected with the first filling port, the other end of the first pre-pumping channel is connected with the second vacuum outlet, an eighth valve, a seventh valve, a sixth valve and a fifth valve are sequentially arranged on the first pre-pumping channel in the direction of the second vacuum outlet, and the fourth valve, the seventh valve, the sixth valve and the fifth valve act simultaneously to control the on-off of the first pre-pumping channel;

one end of the second pre-pumping channel is connected with the second filling port, and the other end of the second pre-pumping channel is connected with the second vacuum outlet; an eighteenth valve, a seventeenth valve, a sixteenth valve and a fifteenth valve are sequentially arranged on the second pre-pumping channel in the direction of the second vacuum outlet, and the fourth valve, the seventeenth valve, the sixteenth valve and the fifteenth valve act simultaneously to control the on-off of the second pre-pumping channel;

one end of the first high-vacuum pre-pumping channel is connected with the first filling port, and the other end of the first high-vacuum pre-pumping channel is connected with the local pump; an eighth valve and a ninth valve are sequentially arranged on the first high-vacuum pre-pumping channel in the direction of the local pump, and the eighth valve and the ninth valve act simultaneously to control the on-off of the first high-vacuum pre-pumping channel;

one end of the second high-vacuum pre-pumping channel is connected with the second filling port, and the other end of the second high-vacuum pre-pumping channel is connected with the local pump; an eighteenth valve and a nineteenth valve are sequentially arranged in the second high-vacuum pre-pumping channel in the direction of the local pump, and the eighteenth valve and the nineteenth valve act simultaneously to control the on-off of the second high-vacuum pre-pumping channel;

one end of the first primary filling channel is connected with the first filling port, and the other end of the first primary filling channel is connected with the first vacuum outlet; an eighth valve, a seventh valve, a sixth valve and a tenth valve are sequentially arranged on the first primary perfusion channel in the direction of the first vacuum outlet, and the eighth valve, the seventh valve, the sixth valve and the tenth valve act simultaneously to control the on-off of the first primary perfusion channel;

one end of the second primary perfusion channel is connected with the second perfusion port, and the other end of the second primary perfusion channel is connected with the first vacuum outlet; the second primary perfusion channel sequentially passes through an eighteenth valve, a seventeenth valve, a sixteenth valve and a twentieth valve in the direction of the first vacuum outlet, and the eighteenth valve, the seventeenth valve, the sixteenth valve and the twentieth valve act simultaneously to control the on-off of the second primary perfusion channel;

one end of the first secondary perfusion channel is connected with the first adsorption port, and the other end of the first secondary perfusion channel is connected with the local pump; a second valve, a third valve and a fourth valve are sequentially arranged on the first secondary perfusion channel in the direction of the local pump, and the first secondary perfusion channel, the third valve and the fourth valve act simultaneously to control the on-off of the first secondary perfusion channel;

one end of the second secondary perfusion channel is connected with the second adsorption port, and the other end of the second secondary perfusion channel is connected with the local pump; a twelfth valve, a thirteenth valve and a fourteenth valve are sequentially arranged in the second secondary perfusion channel in the direction of the local pump, and the twelfth valve, the thirteenth valve and the fourteenth valve act simultaneously to control the on-off of the second secondary perfusion channel;

one end of the first fastening channel is connected with the first adsorption port, the other end of the first fastening channel is connected with the first vacuum outlet, a second valve and a first valve are sequentially arranged on the first fastening channel in the direction of the first vacuum outlet, and the second valve and the first valve act simultaneously to control the on-off of the first fastening channel;

one end of the second fastening channel is connected with the second adsorption port, and the other end of the second fastening channel is connected with the first vacuum outlet; and a twelfth valve and an eleventh valve are sequentially arranged on the second fastening channel in the direction towards the first vacuum outlet, and the twelfth valve and the eleventh valve act simultaneously to control the on-off of the second fastening channel.

According to the technical scheme provided by the embodiment of the application, the pipeline that the inlet end of the first vacuum pump group and the first vacuum outlet are connected is made of aluminum alloy metal tubes, and the pipeline that the inlet end of the second vacuum pump group and the second vacuum outlet are connected is made of aluminum alloy metal tubes.

According to the technical scheme provided by the embodiment of the application, the first vacuum pump group comprises: the high vacuum buffer tank is communicated with the first vacuum outlet at one end, and the first vacuum pump, the second vacuum pump and the third vacuum pump are respectively communicated with the other end of the high vacuum buffer tank;

the second vacuum pump set includes: one end of the low vacuum buffer tank is communicated with the second vacuum outlet, and the fourth vacuum pump is connected with the other end of the low vacuum buffer tank.

According to the technical scheme provided by the embodiment of the application, the control module comprises:

the valve station control module is in valve control connection with the channel; the valve station control module is provided with a valve input end for controlling the start and stop of a valve;

the vacuum pump control module is in control connection with first, second, third and fourth vacuum pumps in the vacuum system and motors of the local pumps; the vacuum pump control module is provided with a vacuum pump input end for controlling the start and stop of the pump;

the vacuum system control module is respectively connected with the valve station control module and the vacuum pump control module; the control box comprises a control box input end for controlling the start and stop of a valve and a pump.

According to the technical scheme provided by the embodiment of the application, a first valve group button and a second valve group button are arranged on the input end of the control box;

the first valve group button is used for controlling the on-off of a channel communicated with the first mold, and the second valve group button is used for controlling the on-off of a channel communicated with the second mold;

the first valve group button comprises a first reset button, a first pre-pumping button, a first high-vacuum pre-pumping button, a first primary filling button, a first secondary filling button, a first emergency aid button and a first fastening button;

the second valve group button comprises a second reset button, a second pre-pumping button, a second high-vacuum pre-pumping button, a second primary filling button, a second secondary filling button, a second emergency rescue button and a second fastening button;

the first valve group button and the second valve group button are arranged in a row; wherein,

the first pre-pumping button is used for controlling the eighth valve, the seventh valve, the sixth valve and the fifth valve to act simultaneously; the second pre-pumping button is used for controlling the eighteenth valve, the seventeenth valve, the sixteenth valve and the fifteenth valve to simultaneously act;

the first high-vacuum pre-pumping button is used for controlling the eighth valve 1T4 and the ninth valve 1G2 to act simultaneously; the second high vacuum pre-pumping button is used for controlling the eighteenth valve 2T4 and the nineteenth valve 2G2 to act simultaneously;

the first one-time filling button is used for controlling the eighth valve 1T4, the seventh valve 1N, the sixth valve 1T3 and the tenth valve 1R2 to act simultaneously; the second primary filling button is used for controlling the eighteenth valve 2T4, the seventeenth valve 2N, the sixteenth valve 2T3 and the twentieth valve 2R2 to act simultaneously;

the first secondary filling button is used for controlling the second valve 1T1, the third valve 1T2 and the fourth valve 1G1 to act simultaneously; the second secondary filling button is used for controlling the twelfth valve 2T1, the thirteenth valve 2T2 and the fourteenth valve 2G1 to act simultaneously;

the first fastening button is used for controlling the second valve 1T1 and the first valve 1R1 to act simultaneously; the second fastening button is used for controlling the twelfth valve 2T1 and the eleventh valve 2R1 to act simultaneously;

the first rescue button is used for controlling the third valve 1T2 and the fourth valve 1G1 to act simultaneously; the second rescue button is used for controlling the thirteenth valve 2T2 and the fourteenth valve 2G1 to act simultaneously.

The utility model has the following beneficial effects:

the control module controls the action of the valve, so that the on-off of different channels in the valve station is realized, and when the first vacuum pump set or the second vacuum pump set works, the mold cavity is vacuumized, so that the requirement of 1-6m/min compressed air consumption is met. Because the action of the valve is controlled by the control module, compared with the existing manual control, the operation of the valve cannot cause the disorder of opening and closing, the production error rate is reduced, and the production cost is further reduced; meanwhile, the valve station is positioned in the vacuum station room relatively close to the mold production workshop, and the vacuum system is positioned in the vacuum station room relatively far away from the mold production workshop, so that equipment such as a vacuum pump and the like included in the vacuum system are also far away from the mold production workshop.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a schematic diagram of a system according to the present invention;

FIG. 2 is a schematic view of a valve station according to the present invention;

FIG. 3 is a schematic view of a manual control valve door panel according to one embodiment of the present invention;

fig. 4 is a schematic diagram of a control box panel according to a first embodiment of the present invention.

Description of reference numerals:

110. a first mold; 120. a second mold;

111. a first adsorption port; 112. a first rescue opening; 113. a first filling port;

121. a second adsorption port; 122. a second rescue opening; 123. a second infusion port;

130. a first irrigation end; 140. a second irrigation end;

200. a valve station;

221. a vacuum system control module; 222. a valve station control module; 223. a vacuum pump control module;

231. a first vacuum outlet; 232. a second vacuum outlet;

241. a first local pump; 242. a second local pump;

300. a vacuum system;

311. a first vacuum pump; 312. a second vacuum pump; 313. a third vacuum pump; 314. a fourth vacuum pump;

321. a high vacuum buffer tank; 322. a low vacuum buffer tank;

330. an intake air filter; 340. a vacuum release valve; 350. a vacuum gauge; 360. a check valve; 370. an electric ball valve; 380. silencer with improved structure

1R1, first valve; 1T1, second valve; 1T2, third valve; 1G1, fourth valve; 1B, a fifth valve; 1T3, sixth valve; 1N, a seventh valve; 1T4, eighth valve; 1G2, ninth valve; 1R2, tenth valve;

2R1, eleventh valve; 2T1, twelfth valve; 2T2, thirteenth valve; 2G1, fourteenth valve; 2B, a fifteenth valve; 2T3, sixteenth valve; 2N, a seventeenth valve; 2T4, eighteenth valve; 2G2, nineteenth valve; 2R2, twentieth valve;

DF. A twenty-first valve.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", "front", "rear", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally laid out when the disclosed products are used, and are only for convenience of describing and simplifying the present disclosure, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "butted" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

An automated vacuum valve station control system comprising: the mould is provided with a mould cavity, one end of the mould cavity is connected with the pouring end, and the other end of the mould cavity is provided with a plurality of connecting ports for vacuumizing; a valve station 200, one end of which is provided with a plurality of air inlets correspondingly connected with the connecting ports, and the other end of which is provided with a first vacuum outlet 231 and a second vacuum outlet 232, and the interior of which is provided with a plurality of channels for communicating the air inlets with the first vacuum outlet 231 and the second vacuum outlet 232, wherein each channel is provided with a plurality of valves for controlling the on-off of the channel, and the valves are connected with the control module; a vacuum system 300 comprising a first vacuum pump set and a second vacuum pump set; the air inlet end of the first vacuum pump group is connected with a first vacuum outlet 231, and the air inlet end of the second vacuum pump group is connected with a second vacuum outlet 232; the valve station 200 is located in a production workshop relatively close to the mold, the vacuum system 300 is located in a vacuum station room far away from the mold, and the control module controls the valve to act so as to control the on-off of the channels.

As shown in figure 1, the control module controls the action of the valve, so that the on-off of different channels in the valve station is realized, and when the first vacuum pump set or the second vacuum pump set works, the mold cavity is vacuumized, so that the requirement of 1-6m/min compressed air consumption is met. Because the action of the valve is controlled by the control module, compared with the existing manual control, the operation of the valve cannot cause the disorder of opening and closing, the production error rate is reduced, and the production cost is further reduced; meanwhile, the valve station is positioned in the vacuum station room relatively close to the mold production workshop, and the vacuum system is positioned in the vacuum station room relatively far away from the mold production workshop, so that equipment such as a vacuum pump and the like included in the vacuum system are also far away from the mold production workshop.

According to the technical scheme provided by the embodiment of the application, the mold cavity comprises a vacuum bag paved on the surface of the mold and a fiber lamination layer paved along the surface of the mold in the vacuum bag.

The method comprises the following steps of forming a mold cavity by a vacuum bag laid on the surface of a mold, then injecting fibers into the vacuum bag, laying a plurality of layers of fibers along the surface of the mold cavity through the vacuum bag, coating glue on the surface of each layer of laid fibers, and finally forming a fiber lamination layer.

The pour tip contains an adhesive material, such as a resin. When the channels of the valve station are communicated and the vacuum system is started, a negative pressure is formed in the cavity of the mold, unsaturated resin is pressed into the fiber lamination layer by using the pressure generated by vacuum, the resin soaks the reinforcing material and finally fills the whole mold, after a period of time, the vacuum material is removed after the product is solidified, and the required product is obtained from the mold.

According to the technical solution provided by the embodiment of the present application, the mold includes a first mold 110 and a second mold 120; the first mould surface is provided with a first mould cavity, and the second mould surface is provided with a second mould cavity; the connectors comprise a first connector and a second connector; the first connecting port comprises a first adsorption port 111, a first rescue port 112 and a first filling port 113; the second connection port includes a second adsorption port 121, a second rescue port 122, and a second filling port 123.

Wherein, two moulds are connected simultaneously in the valve station, and the work of evacuation can be carried out simultaneously to two moulds to first mould 110 and second mould 120, improves production efficiency.

The filling ends include a first filling end 130 in communication with a first mold cavity and a second filling end 140 in communication with a second mold cavity, with two filling ends for two molds. Of course, the same pouring tip can also be used for both moulds.

The vacuum-pumping operation is generally performed according to the procedures of pre-pumping, high-vacuum pre-pumping, primary pouring, secondary pouring and fastening. In the process of vacuum pumping, the connection between the fiber lamination layer and the resin is more and more compact, and the product is formed after a certain time. The connecting ports are provided with a plurality of connecting ports and are positioned at different positions of the mould, so that the vacuumizing effect is improved; different connectors are communicated with corresponding channels of the pipelines of the valve station, so that the vacuum-pumping efficiency is improved.

It can be understood that the vacuum bag is provided with a plurality of connecting holes corresponding to the connecting ports, so that the air inlet is conveniently communicated with the mold cavity.

According to the technical scheme provided by the embodiment of the application, a local pump is further arranged in the valve station 200, the channel comprises a rescue channel, and the rescue channel comprises a first rescue channel and a second rescue channel; one end of the first rescue channel is communicated with the air inlet end of the local pump, and the other end of the first rescue channel is communicated with a first rescue port 112; a third valve 1T2 and a fourth valve 1G1 are sequentially arranged on the first rescue channel in the direction of the air inlet end of the local pump, and the first valve and the fourth valve act simultaneously to control the on-off of the first rescue channel; one end of the second rescue channel is communicated with the air inlet end of the local pump, and the other end of the second rescue channel is communicated with a second rescue port 122; and a thirteenth valve 2T2 and a fourteenth valve 2G1 are sequentially arranged on the second rescue channel in the direction of the air inlet end of the local pump, and act at the same time to control the on-off of the second rescue channel.

Specifically, the vacuum system is far away from the mold, a vacuum pump of the vacuum system, namely a remote pump, is far away from the mold, and the local pump is located inside the valve station and is close to the mold; on one hand, after the vacuumizing operation is started, the local pump can quickly respond and coact with a vacuum pump, namely a remote pump, positioned in a vacuum system, so that the air extraction of a pipeline is increased, and the vacuumizing efficiency is improved; on the other hand, the local pump can also be used as a standby pump, and when the remote pump fails, the local pump is put into the vacuum pumping work.

It will be appreciated that remote pumps are less powerful than local pumps, and that local pumps have less floor space, and do not generate much noise and take up too much floor space even if local pumps are located on site.

Specifically, the air inlet end of the local pump is provided with an air inlet filter 330, so that impurities entering the pump body are reduced, and the service life of the pump is prolonged.

According to the technical scheme provided by the embodiment of the application, the local pump comprises a first local pump 241 and a second local pump 242, the air inlet ends of the first local pump 241 and the second local pump are communicated, and a twenty-first valve DF is arranged on a communicated pipeline.

Wherein the number of the local pumps is two, that is, a first local pump 241 and a second local pump 242. A twenty-first valve DF between the first 241 and second local pumps is provided to communicate the first rescue channel with the second rescue channel, and when one of the local pumps fails, the other local pump is used to power both rescue channels simultaneously, without affecting the use.

Specifically, the first and second local pumps are coupled to a silencer 380 to further reduce noise generated by the local vacuum pumps.

According to the technical scheme provided by the embodiment of the application, the channel comprises:

one end of the first pre-pumping channel is connected with the first filling port 113, the other end of the first pre-pumping channel is connected with the second vacuum outlet 232, an eighth valve 1T4, a seventh valve 1N, a sixth valve 1T3 and a fifth valve 1B are sequentially arranged on the first pre-pumping channel in the direction of the second vacuum outlet, and the fourth valve acts simultaneously to control the on-off of the first pre-pumping channel;

one end of the second pre-pumping channel is connected with the second filling port 123, and the other end of the second pre-pumping channel is connected with the second vacuum outlet 232; an eighteenth valve 2T4, a seventeenth valve 2N, a sixteenth valve 2T3 and a fifteenth valve 2B are sequentially arranged on the second pre-pumping channel in the direction of the second vacuum outlet, and the fourth valve, the sixteenth valve and the fifteenth valve are simultaneously operated to control the on-off of the second pre-pumping channel;

one end of the first high-vacuum pre-pumping channel is connected with the first filling port 113, and the other end of the first high-vacuum pre-pumping channel is connected with the local pump; an eighth valve 1T4 and a ninth valve 1G2 are sequentially arranged on the first high-vacuum pre-pumping channel in the direction towards the local pump, and the first high-vacuum pre-pumping channel and the ninth valve act simultaneously to control the on-off of the first high-vacuum pre-pumping channel;

a second high-vacuum pre-pumping channel, one end of which is connected with the second filling port 123 and the other end of which is connected with the local pump; an eighteenth valve 2T4 and a nineteenth valve 2G2 are sequentially arranged on the second high-vacuum pre-pumping channel in the direction towards the local pump, and the eighteenth valve and the nineteenth valve act simultaneously to control the on-off of the second high-vacuum pre-pumping channel;

a first primary filling channel having one end connected to the first filling port 113 and the other end connected to the first vacuum outlet 231; an eighth valve 1T4, a seventh valve 1N, a sixth valve 1T3 and a tenth valve 1R2 are sequentially arranged on the first primary perfusion channel in the direction of the first vacuum outlet 231, and the fourth valve acts simultaneously to control the on-off of the first primary perfusion channel;

one end of the second primary perfusion channel is connected with the second perfusion port 123, and the other end of the second primary perfusion channel is connected with the first vacuum outlet 231; the second primary perfusion channel sequentially passes through an eighteenth valve 2T4, a seventeenth valve 2N, a sixteenth valve 2T3 and a twentieth valve 2R2 in the direction of the first vacuum outlet 231, and the eighteenth valve, the seventeenth valve and the sixteenth valve are simultaneously operated to control the on-off of the second primary perfusion channel;

one end of the first secondary perfusion channel is connected with the first adsorption port 111, and the other end of the first secondary perfusion channel is connected with the local pump; a second valve 1T1, a third valve 1T2 and a fourth valve 1G1 are sequentially arranged on the first secondary perfusion channel in the direction of the local pump, and the first valve, the third valve and the fourth valve act simultaneously to control the on-off of the first secondary perfusion channel;

one end of the second secondary perfusion channel is connected with the second adsorption port 121, and the other end of the second secondary perfusion channel is connected with the local pump; a twelfth valve 2T1, a thirteenth valve 2T2 and a fourteenth valve 2G1 are sequentially arranged on the second secondary perfusion channel in the direction of the local pump, and the twelfth valve, the thirteenth valve 2T2 and the fourteenth valve 2G1 act simultaneously to control the on-off of the second secondary perfusion channel;

one end of the first fastening channel is connected with the first adsorption port 111, the other end of the first fastening channel is connected with the first vacuum outlet 231, the first fastening channel is sequentially provided with a second valve 1T1 and a first valve 1R1 in the direction of the first vacuum outlet 231, and the two valves simultaneously act to control the on-off of the first fastening channel;

a second fastening passage having one end connected to the second adsorption port 121 and the other end connected to the first vacuum outlet 231; the twelfth valve 2T1 and the eleventh valve 2R1 are sequentially arranged in the second fastening channel in the direction of the first vacuum outlet 231, and the twelfth valve and the eleventh valve act simultaneously to control the on-off of the second fastening channel.

Wherein, as shown in fig. 2, one end of the valve station is communicated with the first mold and the second mold, and the other end is communicated with the vacuum system.

The first mold is communicated with the first pre-pumping channel, the first high-vacuum pre-pumping channel, the first primary pouring channel, the first secondary pouring channel and the first fastening channel. When the corresponding valves are controlled according to the procedures, the channels corresponding to the corresponding valves are communicated, and the first mold is vacuumized.

The second mold is communicated with the second pre-pumping channel, the second high-vacuum pre-pumping channel, the second primary pouring channel, the second secondary pouring channel and the second fastening channel. When the corresponding valves are controlled according to the procedures, the channels corresponding to the corresponding valves are communicated, and the second mold is vacuumized.

According to the technical scheme provided by the embodiment of the application, the pipeline that the inlet end of the first vacuum pump group is connected with the first vacuum outlet 231 is made of an aluminum alloy metal pipe, and the pipeline that the inlet end of the second vacuum pump group is connected with the second vacuum outlet 232 is made of an aluminum alloy metal pipe.

Specifically, the aluminum alloy metal tube ensures the vacuum degree inside the pipeline, is not easy to leak and is not easy to be sucked flat.

According to the technical scheme provided by the embodiment of the application, the first vacuum pump group comprises: a high vacuum buffer tank 321 with one end communicated with the first vacuum outlet 231, and a first vacuum pump 311, a second vacuum pump 312 and a third vacuum pump 313 respectively communicated with the other end of the high vacuum buffer tank 321;

the second vacuum pump set includes: a low vacuum buffer tank 322 having one end connected to the second vacuum outlet 232, and a fourth vacuum pump 314 connected to the other end of the low vacuum buffer tank 322.

Wherein the high vacuum buffer tank 321 is a 1500L vacuum tank for 30inHg of vacuum. The low vacuum surge tank 322 is a 500L vacuum tank for 15inHg vacuum. Specifically, the high vacuum buffer tank 321 and the low vacuum buffer tank 322 play a role in mixed pressure, so that the vacuum pump is prevented from being frequently started and stopped under the condition that the vacuum degree does not reach the standard, and the service life of the vacuum pump is prolonged.

And pressure gauges are connected to the high vacuum buffer tank 321 and the low vacuum buffer tank 322 so as to monitor pressure values at any time.

Specifically, an air inlet filter 330, a vacuum release valve 340, a vacuum sensor, a vacuum gauge 350, a check valve 360 and an electric ball valve 370 are sequentially arranged on a pipeline from an air inlet end of the first/second/third vacuum pump to a high vacuum buffer tank 321; an air filter 330, a vacuum release valve 340, a vacuum sensor, a vacuum gauge 350, a check valve 360 and an electric ball valve 370 are sequentially arranged on a pipeline from the fourth vacuum pump to the low vacuum buffer tank 322.

The intake filter 330 is used to reduce contaminants entering the pump body, thereby extending the life of the pump.

The connection section of the air inlet filter 330 and the vacuum pump is a vacuum corrugated pipe, so that the transmission efficiency of the sealing performance and the vacuum degree is improved.

The vacuum gauge 350 is used to display the line pressure.

The vacuum sensor is located on the connection section at the vacuum gauge 350 for monitoring the pressure of the pipeline in real time.

And the first/second/third/fourth vacuum pump is connected with a temperature sensor for monitoring the running temperature of the motor in real time.

According to the technical scheme provided by the embodiment of the application, the control module comprises:

a valve station control module 222, which is connected with the valve control on the channel; the valve station control module 222 is provided with a valve input end for controlling the start and stop of a valve;

a vacuum pump control module 223 connected to the first, second, third and fourth vacuum pumps in the vacuum system 300 and the motors of the local pumps; the vacuum pump control module 223 is provided with a vacuum pump input end for controlling the start and stop of the pump;

a vacuum system control module 221, which is connected to the valve station control module 222 and the vacuum pump control module 223 respectively; the control box comprises a control box input end for controlling the start and stop of a valve and a pump.

Specifically, the input end of the valve is a touch screen panel, the touch screen panel is provided with valve switches for controlling all valves on the channel to act, the valve switches are arranged on the panel in an array mode, and the valve switches are controlled to be further capable of controlling the on-off of the channel, so that the operation of vacuumizing is controlled. The valve array is arranged, and the operation of the touch screen panel is simple, and meanwhile, the valve is not easy to touch mistakenly, so that the error rate is reduced.

Specifically, the vacuum pump control module 223 is connected to the motors of the first vacuum pump, the second vacuum pump, the third vacuum pump, the fourth vacuum pump, the first local pump and the second local pump, so that the start and stop of the first vacuum pump, the second vacuum pump, the third vacuum pump and the fourth vacuum pump can be controlled by the vacuum pump control module. Because the vacuum system is located in the vacuum station room far away from the mould, the first vacuum pump, the second vacuum pump, the third vacuum pump and the fourth vacuum pump are also collectively called as remote pumps.

The vacuum pump control module 223 controls only two of the first vacuum pump, the second vacuum pump, and the third vacuum pump to be in a working state, and the other one is in a standby state.

The vacuum pump input end is a touch screen panel, and the staff can directly control the start and stop operations of different vacuum pumps through a control panel.

The vacuum sensor and the temperature sensor are connected with the vacuum pump control module 223. The vacuum pump control module further comprises a vacuum pump display end for displaying the pressure value and the temperature information of the vacuum system, so that the pressure of the pipeline can be conveniently monitored by a worker from the display surface of the vacuum control module, and the pipeline can be timely processed when the information is abnormal.

In particular, the vacuum system control module 221 is used to control the start and stop of valves and pumps.

The control box is characterized in that a valve switching button, a remote pump switching button, a local pump switching button, a pressure alarm indicator lamp, a power indicator lamp and an emergency stop indicator lamp are further arranged at the input end of the control box.

The valve switching button is used for controlling the switching of the manual control, stop and automatic control states of the valve. The remote pump switching button is used for controlling the state switching of manual control, stop and automatic control of the first/second/third/fourth pump. The local pump switching button is used for controlling the state switching of manual control, stop and automatic control of the first local pump and the second local pump.

The pressure alarm indicator light is connected with the pressure sensor, and when the measured pressure is abnormal, the pressure alarm indicator light is on. The emergency stop indicator light is connected with a temperature sensor arranged on a motor of the vacuum pump, when the measured temperature is abnormal, the vacuum pump stops working, and the emergency stop indicator light is turned on. When the power is switched on, the power indicator lamp is turned on.

According to the technical scheme provided by the embodiment of the application, a first valve group button and a second valve group button are arranged on the input end of the control box;

the first valve group button is used for controlling the on-off of a channel communicated with the first mold, and the second valve group button is used for controlling the on-off of a channel communicated with the second mold;

the first valve group button comprises a first reset button, a first pre-pumping button, a first high-vacuum pre-pumping button, a first primary filling button, a first secondary filling button, a first aid-applying button and a first fastening button;

the second valve group button comprises a second reset button, a second pre-pumping button, a second high-vacuum pre-pumping button, a second primary filling button, a second secondary filling button, a second emergency rescue button and a second fastening button;

the first valve group button and the second valve group button are arranged in a row; wherein,

the first pre-pumping button is used for controlling the eighth valve 1T4, the seventh valve 1N, the sixth valve 1T3 and the fifth valve 1B to act simultaneously; the second pre-pumping button is used for controlling the eighteenth valve 2T4, the seventeenth valve 2N, the sixteenth valve 2T3 and the fifteenth valve 2B to act simultaneously;

the first high-vacuum pre-pumping button is used for controlling the eighth valve 1T4 and the ninth valve 1G2 to act simultaneously; the second high vacuum pre-pumping button is used for controlling the eighteenth valve 2T4 and the nineteenth valve 2G2 to act simultaneously;

the first one-time filling button is used for controlling the eighth valve 1T4, the seventh valve 1N, the sixth valve 1T3 and the tenth valve 1R2 to act simultaneously; the second primary filling button is used for controlling the eighteenth valve 2T4, the seventeenth valve 2N, the sixteenth valve 2T3 and the twentieth valve 2R2 to act simultaneously;

the first secondary filling button is used for controlling the second valve 1T1, the third valve 1T2 and the fourth valve 1G1 to act simultaneously; the second secondary filling button is used for controlling the twelfth valve 2T1, the thirteenth valve 2T2 and the fourteenth valve 2G1 to act simultaneously;

the first fastening button is used for controlling the second valve 1T1 and the first valve 1R1 to act simultaneously; the second fastening button is used for controlling the twelfth valve 2T1 and the eleventh valve 2R1 to act simultaneously;

the first rescue button is used for controlling the third valve 1T2 and the fourth valve 1G1 to act simultaneously; the second rescue button is used for controlling the thirteenth valve 2T2 and the fourteenth valve 2G1 to act simultaneously.

The design of control box panel button column formula makes things convenient for the staff to press a button, can control corresponding valve, carries out the evacuation operation of corresponding flow. Because the control box panel is positioned on the control module of the valve station, and the valve station is positioned in a production workshop close to the mold, the worker can observe the vacuumizing condition at any time to carry out corresponding operation.

Example one

The embodiment provides an automatic vacuum valve station system for a wind power blade.

As shown in fig. 1, the first mold is a male mold of the wind turbine blade, and is used for forming a PS surface (windward surface) of the wind turbine blade; the second die is a female die of the wind power blade and is used for forming an SS (surface opposite to the wind) surface of the wind power blade.

And laying vacuum bags on the PS surface and the SS surface, laying fibers in the vacuum bags and on the surface of the mould, brushing glue, and laying the fibers to form a fiber lamination layer.

The vacuum bag and the fiber laminate therein form a mold cavity. One end of the mold cavity is communicated with the filling end, and the filling end is filled with resin.

The mold cavity of the PS surface is communicated with a vacuum system through a first adsorption port, a first rescue port and a first filling port after passing through a valve station. The valve on the channel communicated with the valve is a first valve group and is controlled by a button corresponding to the first valve group.

And the mold cavity of the SS surface is communicated with a vacuum system through a second adsorption port, a second rescue port and a second filling port after passing through a valve station. The valve on the channel communicated with the valve is a second valve group and is controlled by a button corresponding to the second valve group.

The input end of the valve is shown in figure 3, and workers can observe the vacuumized adsorption condition to operate the valve. Because the valve switch is the array and arranges, be difficult to the error when easy operation, practice thrift the error expense.

The control box input is shown in figure 4. Because every button in first valves button and the second valves button corresponds a plurality of valves, can directly open corresponding passageway, work only need press in proper order this moment and take out in advance, the high vacuum is taken out in advance, once fills, secondary fills, fastens the button, carries out the evacuation according to the process flow of taking out in advance, the high vacuum is taken out in advance, once fills, secondary fills and fastens, easy operation is convenient.

In this in-process, emergency rescue button is used for opening the rescue passageway, and emergency rescue was used for when damaging on the one hand, and on the other hand can use with other passageway cooperations, increases the adsorption affinity and the adsorption effect of evacuation.

And the reset button is used for limiting the valves of the corresponding group to be sequentially pressed according to the sequence of pre-pumping, high-vacuum pre-pumping, primary perfusion, secondary perfusion and fastening the button, jumping to press inefficacy and returning to press inefficacy. When the reset button is pressed, the sequence can be interrupted, any state can be selected after interruption, and the sequence is executed after the new state is selected.

The automatic vacuum valve station system not only realizes the control of the operation of a remote vacuum system, but also opens the automatic valves according to the needs of use points through the characteristic of the control of the automatic valves in a separate type, so that the operation of users is simpler and more convenient. And the user can also switch between automatic control and manual control.

The foregoing description is only exemplary of the preferred embodiments of the utility model and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, and other embodiments can be made by combining the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.

Claims (10)

1. An automatic vacuum valve station control system, comprising:

the mould is provided with a mould cavity, one end of the mould cavity is connected with the pouring end, and the other end of the mould cavity is provided with a plurality of connecting ports for vacuumizing;

the valve station (200) is provided with a plurality of air inlets correspondingly connected with the connecting ports at one end, a first vacuum outlet (231) and a second vacuum outlet (232) at the other end, a plurality of parallel channels are arranged in the valve station to communicate the air inlets with the first vacuum outlet (231) and the second vacuum outlet (232), a plurality of valves for controlling the on-off of the channels are arranged on each channel, and the valves are connected with the control module;

a vacuum system (300) comprising a first vacuum pump set and a second vacuum pump set; the air inlet end of the first vacuum pump group is connected with a first vacuum outlet (231), and the air inlet end of the second vacuum pump group is connected with a second vacuum outlet (232); wherein,

the valve station (200) is located in a production workshop relatively close to the mold, the vacuum system (300) is located in a vacuum station room far away from the mold, and the control module controls the valve to act so as to control the on-off of the channels.

2. The automated vacuum valve station control system of claim 1, wherein the mold cavity comprises a vacuum bag disposed over the mold surface and a fiber layup disposed along the mold surface within the vacuum bag.

3. An automatic vacuum valve station control system according to claim 1 or 2, characterized in that said mould comprises a first mould (110) and a second mould (120); the first mould surface is provided with a first mould cavity, and the second mould surface is provided with a second mould cavity; the connecting port comprises a first connecting port and a second connecting port;

the first connecting port comprises a first adsorption port (111), a first rescue port (112) and a first filling port (113); the second connecting port comprises a second adsorption port (121), a second rescue port (122) and a second filling port (123).

4. An automatic vacuum valve station control system according to claim 3, characterized in that a local pump is arranged in the valve station (200), the channel comprises a rescue channel, and the rescue channel comprises a first rescue channel and a second rescue channel;

one end of the first rescue channel is communicated with the air inlet end of the local pump, and the other end of the first rescue channel is communicated with a first rescue port (112); a third valve (1T2) and a fourth valve (1G1) are sequentially arranged on the first rescue channel in the direction of the air inlet end of the local pump, and the third valve and the fourth valve act simultaneously to control the on-off of the first rescue channel;

one end of the second rescue channel is communicated with the air inlet end of the local pump, and the other end of the second rescue channel is communicated with a second rescue port (122); and a thirteenth valve (2T2) and a fourteenth valve (2G1) are sequentially arranged on the second rescue channel in the direction of the air inlet end of the local pump, and the thirteenth valve and the fourteenth valve act simultaneously to control the on-off of the second rescue channel.

5. The automatic vacuum valve station control system of claim 4, wherein the local pump comprises a first local pump (241) and a second local pump (242), the air inlet ends of the first local pump (241) and the second local pump are communicated, and a twenty-first valve (DF) is arranged on a pipeline of the communication.

6. The automated vacuum valve station control system of claim 4, wherein the channel comprises:

one end of the first pre-pumping channel is connected with the first filling port (113), the other end of the first pre-pumping channel is connected with the second vacuum outlet (232), an eighth valve (1T4), a seventh valve (1N), a sixth valve (1T3) and a fifth valve (1B) are sequentially arranged on the first pre-pumping channel in the direction of the second vacuum outlet, and the fourth valve acts simultaneously to control the on-off of the first pre-pumping channel;

one end of the second pre-pumping channel is connected with the second filling port (123), and the other end of the second pre-pumping channel is connected with the second vacuum outlet (232); an eighteenth valve (2T4), a seventeenth valve (2N), a sixteenth valve (2T3) and a fifteenth valve (2B) are sequentially arranged on the second pre-pumping channel in the direction of the second vacuum outlet, and the eighteenth valve, the seventeenth valve and the fifteenth valve act simultaneously to control the on-off of the second pre-pumping channel;

one end of the first high-vacuum pre-pumping channel is connected with the first filling port (113), and the other end of the first high-vacuum pre-pumping channel is connected with the local pump; an eighth valve (1T4) and a ninth valve (1G2) are sequentially arranged on the first high-vacuum pre-pumping channel in the direction towards the local pump, and the first high-vacuum pre-pumping channel and the ninth valve act simultaneously to control the on-off of the first high-vacuum pre-pumping channel;

one end of the second high-vacuum pre-pumping channel is connected with the second filling port (123), and the other end of the second high-vacuum pre-pumping channel is connected with the local pump; an eighteenth valve (2T4) and a nineteenth valve (2G2) are sequentially arranged on the second high-vacuum pre-pumping channel in the direction towards the local pump, and the eighteenth valve and the nineteenth valve act simultaneously to control the on-off of the second high-vacuum pre-pumping channel;

one end of the first primary perfusion channel is connected with the first perfusion port (113), and the other end of the first primary perfusion channel is connected with the first vacuum outlet (231); an eighth valve (1T4), a seventh valve (1N), a sixth valve (1T3) and a tenth valve (1R2) are sequentially arranged on the first primary perfusion channel in the direction of the first vacuum outlet (231), and the fourth valve acts simultaneously to control the on-off of the first primary perfusion channel;

one end of the second primary perfusion channel is connected with the second perfusion port (123), and the other end of the second primary perfusion channel is connected with the first vacuum outlet (231); the second primary perfusion channel sequentially passes through an eighteenth valve (2T4), a seventeenth valve (2N), a sixteenth valve (2T3) and a twentieth valve (2R2) in the direction of the first vacuum outlet (231), and the fourth valve acts simultaneously to control the on-off of the second primary perfusion channel;

one end of the first secondary perfusion channel is connected with the first adsorption port (111), and the other end of the first secondary perfusion channel is connected with the local pump; a second valve (1T1), a third valve (1T2) and a fourth valve (1G1) are sequentially arranged on the first secondary perfusion channel in the direction towards the local pump, and the first valve, the third valve and the fourth valve act simultaneously to control the on-off of the first secondary perfusion channel;

one end of the second secondary perfusion channel is connected with the second adsorption port (121), and the other end of the second secondary perfusion channel is connected with the local pump; a twelfth valve (2T1), a thirteenth valve (2T2) and a fourteenth valve (2G1) are sequentially arranged in the direction of the local pump from the second secondary perfusion channel, and the twelfth valve, the thirteenth valve and the fourteenth valve act simultaneously to control the on-off of the second secondary perfusion channel;

one end of the first fastening channel is connected with the first adsorption port (111), the other end of the first fastening channel is connected with the first vacuum outlet (231), a second valve (1T1) and a first valve (1R1) are sequentially arranged on the first fastening channel in the direction of the first vacuum outlet (231), and the first fastening channel and the second valve act simultaneously to control the on-off of the first fastening channel;

one end of the second fastening channel is connected with the second adsorption port (121), and the other end of the second fastening channel is connected with the first vacuum outlet (231); and a twelfth valve (2T1) and an eleventh valve (2R1) are sequentially arranged on the second fastening channel in the direction of the first vacuum outlet (231), and the twelfth valve and the eleventh valve act simultaneously to control the on-off of the second fastening channel.

7. The automatic vacuum valve station control system of claim 6, wherein the pipeline connecting the air inlet end of the first vacuum pump group with the first vacuum outlet (231) is made of aluminum alloy metal pipe, and the pipeline connecting the air inlet end of the second vacuum pump group with the second vacuum outlet (232) is made of aluminum alloy metal pipe.

8. The automatic vacuum valve station control system of claim 1, wherein said first vacuum pump group comprises: a high vacuum buffer tank (321) with one end communicated with the first vacuum outlet (231), and a first vacuum pump (311), a second vacuum pump (312) and a third vacuum pump (313) which are respectively communicated with the other end of the high vacuum buffer tank (321);

the second vacuum pump set includes: a low vacuum buffer tank (322) with one end communicated with the second vacuum outlet (232), and a fourth vacuum pump (314) connected with the other end of the low vacuum buffer tank (322).

9. The automated vacuum valve station control system of claim 8, wherein the control module comprises:

a valve station control module (222) in valve control connection with the passageway; the valve station control module (222) is provided with a valve input end for controlling the start and stop of a valve;

the vacuum pump control module (223) is connected with the first, second, third and fourth vacuum pumps in the vacuum system (300) and the motor control of the local pump; the vacuum pump control module (223) is provided with a vacuum pump input end for controlling the start and stop of the pump;

a vacuum system control module (221) connected to the valve station control module (222) and the vacuum pump control module (223), respectively; the control box comprises a control box input end for controlling the start and stop of a valve and a pump.

10. The automatic vacuum valve station control system of claim 9, wherein said control box input has a first set of buttons and a second set of buttons;

the first valve group button is used for controlling the on-off of a channel communicated with the first mold, and the second valve group button is used for controlling the on-off of a channel communicated with the second mold;

the first valve group button comprises a first reset button, a first pre-pumping button, a first high-vacuum pre-pumping button, a first primary filling button, a first secondary filling button, a first emergency aid button and a first fastening button;

the second valve group button comprises a second reset button, a second pre-pumping button, a second high-vacuum pre-pumping button, a second primary filling button, a second secondary filling button, a second emergency rescue button and a second fastening button;

the first valve group button and the second valve group button are arranged in a row; wherein,

the first pre-pumping button is used for controlling the eighth valve (1T4), the seventh valve (1N), the sixth valve (1T3) and the fifth valve (1B) to act simultaneously; the second pre-pumping button is used for controlling the eighteenth valve (2T4), the seventeenth valve (2N), the sixteenth valve (2T3) and the fifteenth valve (2B) to act simultaneously;

the first high-vacuum pre-pumping button is used for controlling the eighth valve (1T4) and the ninth valve (1G2) to act simultaneously; the second high-vacuum pre-pumping button is used for controlling the eighteenth valve (2T4) and the nineteenth valve (2G2) to act simultaneously;

the first one-time filling button is used for controlling the eighth valve (1T4), the seventh valve (1N), the sixth valve (1T3) and the tenth valve (1R2) to act simultaneously; the second primary filling button is used for controlling the eighteenth valve (2T4), the seventeenth valve (2N), the sixteenth valve (2T3) and the twentieth valve (2R2) to act simultaneously;

the first secondary filling button is used for controlling the second valve (1T1), the third valve (1T2) and the fourth valve (1G1) to act simultaneously; the second secondary filling button is used for controlling the twelfth valve (2T1), the thirteenth valve (2T2) and the fourteenth valve (2G1) to act simultaneously;

the first fastening button is used for controlling the simultaneous action of the second valve (1T1) and the first valve (1R 1); the second fastening button is used for controlling the twelfth valve (2T1) and the eleventh valve (2R1) to act simultaneously;

the first rescue button is used for controlling the third valve (1T2) and the fourth valve (1G1) to act simultaneously; the second rescue button is used for controlling the thirteenth valve (2T2) and the fourteenth valve (2G1) to act simultaneously.

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