Central vacuum device of press

Abstract

The utility model discloses a central vacuum device of a pressing machine, which comprises the pressing machine and a controller, and the pressing machine is provided with a vacuumizing mechanism and a vacuum breaking valve group which are controlled by the controller. The vacuumizing mechanism comprises a first vacuum pipe arranged on the pressing machine, a vacuumizing tank communicated with the first vacuum pipe through a fifth vacuum pipeline and a vacuumizing pump set communicated with the vacuumizing tank through a third vacuum pipe, and a first vacuum maintaining valve set controlled by a controller is arranged on the first vacuum pipe; a vacuum maintaining mechanism controlled by the controller is further arranged on the press and comprises a second vacuum pipe arranged on the press, a vacuum maintaining tank communicated with the second vacuum pipe through a sixth vacuum pipeline and a vacuum maintaining pump set communicated with the vacuum maintaining tank through a fourth vacuum pipe. The second vacuum tube is provided with a second vacuum maintaining valve set controlled by the controller, and the first vacuum tube, the second vacuum tube and the vacuum breaking valve set are arranged on the press in parallel. The vacuum pumping device can be used for rapidly pumping vacuum, and the use and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a central vacuum device, especially to a central vacuum device of a press. BACKGROUND

[0002] This equipment is used for high-order CCL industry press, and vacuum system all adopts imported oil type vacuum pump to reach the demand of high vacuum degree, and the following problems exist in actual use process, the following takes the production line of 300,000 CCL monthly production to explain:

[0003] The failure rate is high, and the maintenance cost is high, because residual solvent and small molecular components of epoxy resin, buffer material kraft paper adhesive volatiles are brought into the vacuum pump under high temperature and high vacuum condition in the pressing process, pollute the lubricating oil and block the oil way, cause the vacuum pump high temperature and vacuum degree drop, need regular major maintenance, generally 1 month wants major maintenance 1 time, 1 year wants major repair 1 time, 1 vacuum pump annual maintenance cost is about 1500*12+8000* = 26000 yuan, with standard monthly production 300,000 base plate vehicle two production lines 8 vacuum pumps, annual maintenance cost is about 208000 yuan;

[0004] The power consumption is big, because the traditional configuration is 1 to 1 configuration of press and vacuum pump, plus 1 initial vacuumizing auxiliary pump, basically all pumps 24 hours continuously run, and actual monitoring operation efficiency is above 80%, and annual power consumption is about: 8 (table) * 24 (hours) * 7.5 (KW) * 80% (operation efficiency) * 28 (days) * 12 (months) * 0.8 (yuan / degree) = 387072 yuan;

[0005] The vacuumizing is slow, and the vacuum degree can reach 740mmHg basically above 10 minutes, and the pressing special easily appears board white angle white edge and other quality defects;

[0006] The emergency repair pressure is big, and the vacuum degree of the press is highly concerned at all times, to avoid producing batch quality anomaly. INVENTION CONTENTS

[0007] The utility model aims at overcoming the prior art's insufficient and provides a central vacuum device of a press, solves the problems of high vacuum device use and maintenance cost, high power consumption and slow vacuumizing.

[0008] To achieve the above object, the utility model discloses technical scheme is: a central vacuum device of press, including press and controller, be equipped with the vacuumizing mechanism and the vacuum breaking valve group of controller control on the press, the vacuumizing mechanism includes the first vacuum pipe of setting on the press, with the vacuumizing jar of first vacuum pipe through the fifth vacuum pipe and the vacuumizing pump group of the third vacuum pipe communication with vacuumizing jar, be equipped with the first vacuum valve group of controller control on the first vacuum pipe, still be equipped with the vacuum preserving mechanism of controller control on the press, the vacuum preserving mechanism includes the second vacuum pipe of setting on the press, with the vacuum preserving jar of second vacuum pipe through the sixth vacuum pipe and the vacuum preserving pump group of the fourth vacuum pipe communication with vacuum preserving jar, be equipped with the second vacuum valve group of controller control on the second vacuum pipe, the first vacuum pipe, the second vacuum pipe and the vacuum breaking valve group are parallelly connected and set up on the press.

[0009] Further, the first vacuum pipe on each group of press is parallelly connected and arranged on the fifth vacuum pipe, the first manual valve is arranged on the fifth vacuum pipe, the second vacuum pipe on each group of press is parallelly connected and arranged on the sixth vacuum pipe, and the second manual valve is arranged on the sixth vacuum pipe.

[0010] Further, the vacuumizing jar is provided with the fifth vacuum pipe arranged in parallel on the vacuumizing jar of each group of press, and the vacuum preserving jar is provided with the sixth vacuum pipe arranged in parallel on the vacuum preserving jar of each group of press.

[0011] Further, the vacuumizing pump group includes four vacuumizing pumps parallelly connected and arranged on the third vacuum pipe and controlled by the controller, the seventh vacuum pipe is arranged between the vacuumizing pump and the third vacuum pipe, the first automatic valve, the first check valve and the third manual valve are serially connected on the seventh vacuum pipe, the vacuum preserving pump group includes four vacuum preserving pumps parallelly connected and arranged on the fourth vacuum pipe and controlled by the controller, the eighth vacuum pipe is arranged between the vacuum preserving pump and the fourth vacuum pipe, the second automatic valve, the second check valve and the fourth manual valve are serially connected on the eighth vacuum pipe, and the first automatic valve and the second automatic valve are controlled by the controller.

[0012] Further, the first vacuum valve group includes two third automatic valves and one fifth manual valve serially connected on the first vacuum pipe, the second vacuum valve group includes two fourth automatic valves and one sixth manual valve serially connected on the second vacuum pipe, and the two third automatic valves and the two fourth automatic valves are controlled by the controller.

[0013] Further, the first temperature sensor controlled by the controller is arranged on the vacuumizing pump, and the second temperature sensor controlled by the controller is arranged on the vacuum preserving pump.

[0014] Further, the vacuum extraction tank is provided with a first pressure sensor and a third temperature sensor controlled by the controller.

[0015] Further, the vacuum extraction tank is provided with a first pressure sensor and a third temperature sensor controlled by the controller.

[0016] The beneficial effects of the above structure are as follows: the central vacuum device of the press provided by the utility model controls the vacuum device through the controller, provides the vacuum source according to the production requirement of the press, simultaneously increases the vacuum storage tank and the vacuum maintaining mechanism, optimizes the pipeline design, reduces the maintenance cost by more than 90%, saves the power consumption by more than 80%, improves the vacuum extraction efficiency by 100%, changes the emergency maintenance into the predictive maintenance, realizes the fast vacuum extraction, the stable vacuum maintenance and the effective filtration of most of the organic matters polluting the vacuum pump, and the operation environment of the vacuum pump is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The technical scheme of the utility model will be further described below with reference to the drawings:

[0018] Fig. 1 The structure diagram of the central vacuum device of the press is shown.

[0019] Fig. 2 The structure diagram of the vacuum extraction pump group is shown.

[0020] Fig. 3 The structure diagram of the vacuum maintaining pump group is shown.

[0021] Fig. 4 The structure diagram of the connection part of the press, the vacuum extraction mechanism, the vacuum maintaining mechanism and the vacuum breaking valve group is shown.

[0022] Wherein: 1, the press; 2, the controller; 3, the vacuum breaking valve group; 4, the first vacuum pipe; 5, the fifth vacuum pipeline; 6, the vacuum extraction tank; 7, the third vacuum pipe; 8, the second vacuum pipe; 9, the sixth vacuum pipeline; 10, the vacuum maintaining tank; 11, the fourth vacuum pipe; 12, the first manual valve; 13, the second manual valve; 14, the vacuum extraction pump; 15, the seventh vacuum pipe; 16, the first automatic valve; 17, the first check valve; 18, the third manual valve; 19, the vacuum maintaining pump; 20, the eighth vacuum pipe; 21, the second automatic valve; 22, the second check valve; 23, the fourth manual valve; 24, the third automatic valve; 25, the fifth manual valve; 26, the fourth automatic valve; 27, the sixth manual valve; 28, the first temperature sensor; 29, the second temperature sensor; 30, the first pressure sensor; 31, the third temperature sensor; 32, the second pressure sensor; 33, the fourth temperature sensor. DETAILED DESCRIPTION

[0023] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0024] The designer of the utility model in view of the demand of vacuum device, innovative put forward a kind of central vacuum device of press, can quickly evacuate, reduce use and maintenance cost, electricity fee falls substantially.

[0025] As Figs. 1 to 4 As shown in a kind of central vacuum device of press, including press 1 and controller 2, the controller 2 uses PLC control system, the press 1 is equipped with the vacuum extraction mechanism and the vacuum breaking valve group 3 controlled by controller 2, the vacuum extraction mechanism includes the first vacuum pipe 4 arranged on the press 1, the vacuum extraction tank 6 communicated with the first vacuum pipe 4 by the fifth vacuum pipe 5 and the vacuum extraction pump group communicated with the vacuum extraction tank 6 by the third vacuum pipe 7, the first vacuum pipe 4 is equipped with the first vacuum valve group controlled by controller 2, the press 1 is also equipped with the vacuum preservation mechanism controlled by controller 2, the vacuum preservation mechanism includes the second vacuum pipe 8 arranged on the press 1, the vacuum preservation tank 10 communicated with the second vacuum pipe 8 by the sixth vacuum pipe 9 and the vacuum preservation pump group communicated with the vacuum preservation tank 10 by the fourth vacuum pipe 11, the second vacuum pipe 8 is equipped with the second vacuum valve group controlled by controller 2, the first vacuum pipe 4, the second vacuum pipe 8 and the vacuum breaking valve group 3 are connected in parallel on the press 1.

[0026] The press 1 is a group every three, the first vacuum pipe 4 on each group of press 1 is connected in parallel on the fifth vacuum pipe 5, the fifth vacuum pipe 5 is equipped with the first manual valve 12, the second vacuum pipe 8 on each group of press 1 is connected in parallel on the sixth vacuum pipe 9, the sixth vacuum pipe 9 is equipped with the second manual valve 13.

[0027] The vacuum extraction tank 6 is according to every more one group of press 1 vacuum extraction tank 6 more one parallelly arranged fifth vacuum pipe 5, the vacuum preservation tank 10 is according to every more one group of press 1 vacuum preservation tank 10 more one parallelly arranged sixth vacuum pipe 9.

[0028] The vacuum pump group includes four vacuum pumps 14 in parallel arranged on the third vacuum pipe 7 and controlled by the controller 2, a seventh vacuum pipe 15 is arranged between the vacuum pump 14 and the third vacuum pipe 7, a first automatic valve 16, a first one-way valve 17 and a third manual valve 18 are arranged in series on the seventh vacuum pipe 15, the vacuum pump group includes four vacuum pumps 19 in parallel arranged on the fourth vacuum pipe 11 and controlled by the controller 2, an eighth vacuum pipe 20 is arranged between the vacuum pump 19 and the fourth vacuum pipe 11, a second automatic valve 21, a second one-way valve 22 and a fourth manual valve 23 are arranged in series on the eighth vacuum pipe 20, and the first automatic valve 16 and the second automatic valve 21 are controlled by the controller 2.

[0029] The first vacuum valve group includes two third automatic valves 24 and a fifth manual valve 25 arranged in series on the first vacuum pipe 4, and the second vacuum valve group includes two fourth automatic valves 26 and a sixth manual valve 27 arranged in series on the second vacuum pipe 8, and the two third automatic valves 24 and the two fourth automatic valves 26 are controlled by the controller 2.

[0030] The vacuum pump 14 is provided with a first temperature sensor 28 controlled by the controller 2, and the vacuum pump 19 is provided with a second temperature sensor 29 controlled by the controller 2.

[0031] The vacuum tank 6 is provided with a first pressure sensor 30 and a third temperature sensor 31 controlled by the controller 2.

[0032] The vacuum tank 10 is provided with a second pressure sensor 32 and a fourth temperature sensor 33 controlled by the controller 2.

[0033] The use steps of the central vacuum device and the press 1 are as follows:

[0034] Step one, before starting the press 1, turn on the central vacuum device, the PLC control system orderly starts the vacuum pump group and the vacuum pump group, opens the first automatic valve 16 and the second automatic valve 21, ensures that the vacuum pump 14 of the vacuum pump group is pumped to-750mmHg in a set time, and the vacuum pump 19 of the vacuum pump group is pumped to-750mmHg in a set time, then closes the four vacuum pumps 14 of the vacuum pump group, and closes the three vacuum pumps 19 of the vacuum pump group at the same time, and leaves one vacuum pump 19 to run continuously; If it is not reached-750mmHg in a set time, it means that the system is at risk, and the problem point can be confirmed and treated in advance;

[0035] Step two, open the cabin door of the press 1 to send in the material to be pressed;

[0036] Step three, start automatic pressing according to the corresponding pressing of the material selection;

[0037] Step four, the automatic pressing machine 1 starts, the central vacuum device PLC control system receives the signal and makes a system judgment, confirms the error, starts the vacuum pump group, opens the third automatic valve 24 to connect the pressing machine 1 and the vacuum tank 6, and closes the third automatic valve 24 to open the fourth automatic valve 26, and switches the pressing machine 1 to the vacuum maintaining mechanism. When the vacuum tank 6 is stable at-750mmHg, stop the vacuum pump 14; if there are two or more pressing machines 1 to be vacuumized at the same time, the system starts the queuing function to inform the pressing machine 1 to stop pressing and queue. Normal pressing of a batch takes more than 3 hours, and this device can correspond to 3 groups of 9 pressing machines 1 for normal pressing;

[0038] The normal vacuum degree of the pressing machine 1 is-750mmHg after 4 minutes, and the vacuum maintaining system can set the vacuum degree according to the pressing material, and the lower limit is-740mmHg, which can meet the needs of high-level processes. If the system vacuum degree is higher than-740mmHg, the second pump is automatically started, and if it cannot be reached, the third and fourth pumps are started in turn to maintain the vacuum degree. Normally, only one pump is needed, and if the second pump is frequently started, the system and the pressure should be checked to confirm the vacuum leakage condition.

[0039] At the same time, the device provides vacuum curve, temperature curve, running time and other predictive maintenance monitoring measures through the first pressure sensor 30, second pressure sensor 32, first temperature sensor 28, second temperature sensor 29, third temperature sensor 31 and fourth temperature sensor 33, to ensure safe and efficient operation of the system.

[0040] Step five, after the pressing machine 1 is pressed, the device confirms through active monitoring and the signal of the pressing machine 1 PLC, and after confirmation, closes the fourth automatic valve 26 to cut off the connection between the pressing machine 1 and the vacuum maintaining tank 10, and ensures that the interlock of the pressing machine 1 cabin door is released after the connection is cut off. At this time, the pressure can be broken to open the cabin door for discharging operation.

[0041] The four vacuum pumps of the device are maintained once a year, and the four vacuum pumps are maintained once every 196 months. There is basically no major repair, and the cost is 4*1500+4*1500*2=18000 yuan. The maintenance cost is reduced by more than 90%, and the maintenance cost is saved by 1-18000 / 208000=91%.

[0042] When vacuumizing, 4 vacuum pumps 14 are started every time, and 1 vacuum pump 19 is started every 2 hours for 5 minutes, and 1 vacuum pump 19 is started every 24 hours for 5 minutes, and the annual electricity cost is about: 4 (units) * 12 (times) * 5 / 60 (hours) * 7.5 (KW) * 2 (start current is 2 times of power consumption) * 28 (days) * 12 (months) * 0.8 (yuan / d) + 1 (unit) * 24 (hours) * 7.5 (KW) * 28 (days) * 12 (months) * 0.8 (yuan / d) = 16128 + 48384 = 64512 yuan, and the saved electricity is 1-64512 / 387072 = 83%, and the electricity cost is greatly reduced.

[0043] The vacuum is quickly and stably in 5 minutes, and the efficiency is improved by 100%, and the quality risk of batches is eliminated.

[0044] According to the system running time, temperature curve, vacuum degree curve and other information, predictive maintenance is carried out, and emergency maintenance is no longer needed.

[0045] The central vacuum device of the press machine has the beneficial effects that: the controller controls the vacuum device to provide a vacuum source according to the production requirement of the press machine, the vacuum tank and the vacuum maintaining mechanism are added, the pipeline design is optimized, the maintenance cost is reduced by more than 90%, the power consumption is saved by more than 80%, the vacuumizing efficiency is improved by 100%, the emergency maintenance is changed into predictive maintenance, the vacuumizing is fast, the vacuum maintaining is stable, most of the organic matters polluting the vacuum pump are effectively filtered, and the running environment of the vacuum pump is improved.

[0046] The above-described and the above-described embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments.

Claims

1. A central vacuum system of a press, comprising a press and a controller, wherein the press is provided with a vacuum-pumping mechanism and a vacuum-breaking valve group controlled by the controller, characterized in that, The vacuumizing mechanism comprises a first vacuum pipe arranged on the press, a vacuumizing tank in communication with the first vacuum pipe through a fifth vacuum pipe, and a vacuumizing pump group in communication with the vacuumizing tank through a third vacuum pipe, the first vacuum pipe is provided with a first vacuum valve group controlled by a controller, the press is further provided with a vacuum preserving mechanism controlled by a controller, the vacuum preserving mechanism comprises a second vacuum pipe arranged on the press, a vacuum preserving tank in communication with the second vacuum pipe through a sixth vacuum pipe, and a vacuum preserving pump group in communication with the vacuum preserving tank through a fourth vacuum pipe, the second vacuum pipe is provided with a second vacuum valve group controlled by a controller, and the first vacuum pipe, the second vacuum pipe and the vacuum valve group are arranged in parallel on the press.

2. The press center vacuum apparatus of claim 1, wherein: The first vacuum pipe of each group of presses is arranged in parallel on the fifth vacuum pipe, and the fifth vacuum pipe is provided with a first manual valve, and the second vacuum pipe of each group of presses is arranged in parallel on the sixth vacuum pipe, and the sixth vacuum pipe is provided with a second manual valve.

3. The press center vacuum apparatus of claim 2, wherein: The vacuumizing tank is provided with one more fifth vacuum pipe arranged in parallel for each additional group of presses, and the vacuum preserving tank is provided with one more sixth vacuum pipe arranged in parallel for each additional group of presses.

4. The press center vacuum apparatus of claim 1 or 3, wherein: The vacuumizing pump group comprises four vacuumizing pumps arranged in parallel on the third vacuum pipe and controlled by a controller, a seventh vacuum pipe is arranged between the vacuumizing pump and the third vacuum pipe, a first automatic valve, a first one-way valve and a third manual valve are arranged in series on the seventh vacuum pipe, the vacuum preserving pump group comprises four vacuum preserving pumps arranged in parallel on the fourth vacuum pipe and controlled by a controller, an eighth vacuum pipe is arranged between the vacuum preserving pump and the fourth vacuum pipe, a second automatic valve, a second one-way valve and a fourth manual valve are arranged in series on the eighth vacuum pipe, and the first automatic valve and the second automatic valve are controlled by the controller.

5. The press center vacuum apparatus of claim 4, wherein: The first vacuum valve group comprises two third automatic valves and a fifth manual valve arranged in series on the first vacuum pipe, the second vacuum valve group comprises two fourth automatic valves and a sixth manual valve arranged in series on the second vacuum pipe, and the two third automatic valves and the two fourth automatic valves are controlled by the controller.

6. The press center vacuum apparatus of claim 4, wherein: The vacuumizing pump is provided with a first temperature sensor controlled by the controller, and the vacuum preserving pump is provided with a second temperature sensor controlled by the controller.

7. The press center vacuum apparatus of claim 1, wherein: The vacuumizing tank is provided with a first pressure sensor and a third temperature sensor controlled by the controller.

8. The press center vacuum apparatus of claim 1, wherein: The vacuum preserving tank is provided with a second pressure sensor and a fourth temperature sensor controlled by the controller.

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