Water pump electric contact pressure gauge alarm self-starting device

Abstract

The present invention relates to a water pump electric contact pressure gauge alarm self-starting device, which belongs to the field of tire production equipment. During normal operation, the 1# and 2# water pumps are manually started and operated. When the water supply pressure drops below the set value, the 3# water pump automatically starts and operates to increase the pressure. At the same time, the sound and light alarm is energized to alarm. When the water supply pressure rises to the set value, the 3# water pump stops. At the same time, the stop button is pressed and the sound and light alarm stops alarming. When the water supply pressure continues to drop below the set value, the 4# water pump automatically starts and operates to increase the pressure. The sound and light alarm is energized to alarm. When the water supply pressure rises to the set value, the 4# water pump stops. The present invention is provided with two electric contact pressure gauges, which are set to different pressure values, to achieve the purpose of automatic start and stop of two standby equipment, ensure the stable output of water supply pressure, improve the degree of automation of the equipment, and prevent pressure fluctuations from causing equipment shutdown, thereby affecting tire production and quality.

Description

Technical Field

[0001] The invention belongs to the field of tire production equipment, in particular to an alarm self-starting device for an electric contact pressure gauge of a water pump used in tire production. Background Art

[0002] As we all know, in the field of tire manufacturing, public utility centrifugal air compressors, nitrogen boosters, and vacuum pumps require cooling water for cooling. According to control standards, the water pressure needs to be maintained above 0.4 MPa. Pressure fluctuations will directly cause equipment shutdowns, affecting tire production and quality. Therefore, reliable and stable operation of water pumps is required. However, during operation, problems such as mechanical and electrical failures of equipment, pipeline leakage, etc. may occur, resulting in pressure drops. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a water pump electric contact pressure gauge alarm self-starting device to ensure the reliable and stable operation of the water pump, prevent pressure fluctuations from causing equipment shutdown and affecting tire production and quality.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a water pump electric contact pressure gauge alarm self-starting device, characterized in that the upper end of the normally closed contact of the thermal relay FR1 is connected to the control power supply L, and the lower end is connected to the upper end of the stop button SB1, the lower end of the stop button SB1 is connected to the upper end of the start button SB2, the lower end of the start button SB2 is connected to the upper end of the contactor KM1 coil, the lower end of the contactor KM1 coil is connected to the control power supply N, the upper end of the contactor self-locking normally open contact KM1 is connected to the upper end of the start button SB2, and the lower end is connected to the lower end of the start button SB2, the upper end of the normally closed contact of the thermal relay FR2 is connected to the control power supply L, and the lower end is connected to the upper end of the stop button SB3, the lower end of the stop button SB3 is connected to the upper end of the start button SB4, and the start button The lower end of button SB4 is connected to the upper end of contactor KM2 coil, the lower end of contactor KM2 coil is connected to control power supply N, the upper end of contactor self-locking normally open contact KM2 is connected to the upper end of start button SB4, and the lower end is connected to the lower end of start button SB4, the upper end of transfer switch SA1 manual contact is connected to control power supply L, and the lower end is connected to the upper end of thermal relay FR3 normally closed contact, the lower end of thermal relay FR3 normally closed contact is connected to the upper end of stop button SB5, the lower end of stop button SB5 is connected to the upper end of start button SB6, the lower end of start button SB6 is connected to the upper end of contactor KM3 coil, the lower end of contactor KM3 coil is connected to control power supply N, the upper end of transfer switch SA1 automatic contact is connected to control power supply L, and the lower end is connected to the normally closed contact KA of intermediate relay 1, the lower end of the normally closed contact KA1 of the intermediate relay is connected to the upper end of the normally open contact KA2 of the intermediate relay, the lower end of the normally open contact KA2 of the intermediate relay is connected to the upper end of the coil of the contactor KM3, the upper end of the self-locking contact KM3 of the contactor is connected to the upper end of the normally open contact of the intermediate relay KA2, and the lower end is connected to the upper end of the coil of the contactor KM3, the upper end of the manual contact of the transfer switch SA2 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact of the thermal relay FR4, the lower end of the normally closed contact of the thermal relay FR4 is connected to the upper end of the stop button SB7, the lower end of the stop button SB7 is connected to the upper end of the start button SB8, the lower end of the start button SB6 is connected to the upper end of the coil of the contactor KM4, and the lower end of the coil of the contactor KM4 is connected to the control power supply N, the transfer switch S The upper end of the A2 automatic contact is connected to the control power supply L, and the lower end is connected to the upper end of the intermediate relay normally closed contact KA3. The lower end of the intermediate relay normally closed contact KA3 is connected to the upper end of the intermediate relay normally open contact KA4. The lower end of the intermediate relay normally open contact KA4 is connected to the upper end of the contactor KM4 coil. The upper end of the contactor self-locking contact KM4 is connected to the upper end of the intermediate relay KA4 normally open contact, and the lower end is connected to the upper end of the contactor KM4 coil. The upper end of the high limit contact of the electric contact pressure gauge P1 is connected to the control power supply L, and the lower end is connected to the upper end of the intermediate relay KA1 coil. The lower end of the intermediate relay KA1 coil is connected to the control power supply N. The upper end of the low limit contact of the electric contact pressure gauge P1 is connected to the control power supply L, and the lower end is connected to the upper end of the intermediate relay KA2 coil.The lower end of the coil of the intermediate relay KA2 is connected to the control power supply N, the upper end of the high limit contact of the electric contact pressure gauge P2 is connected to the control power supply L, and the lower end is connected to the upper end of the coil of the intermediate relay KA3, and the lower end of the coil of the intermediate relay KA3 is connected to the control power supply N, the upper end of the low limit contact of the electric contact pressure gauge P2 is connected to the control power supply L, and the lower end is connected to the upper end of the coil of the intermediate relay KA4, and the lower end of the coil of the intermediate relay KA4 is connected to the control power supply N, the upper end of the stop button SB9 is connected to the control power supply L, and the lower end is connected to the upper end of the normally open contact of the intermediate relay KA2, and the lower end Connected to the upper end of the intermediate relay KA5 coil, the lower end of the intermediate relay KA5 coil is connected to the control power supply N, the upper end of the intermediate relay normally open contact KA4 is connected to the lower end of the stop button SB9, and the lower end is connected to the lower end of the normally open contact of the intermediate relay KA2, the upper end of the intermediate relay normally open contact KA5 is connected to the lower end of the stop button SB9, and the lower end is connected to the lower end of the normally open contact of the intermediate relay KA2, the upper end of the normally open contact of the intermediate relay KA5 is connected to the control power supply L, and the lower end is connected to the upper end of the sound and light alarm DL, and the lower end of the sound and light alarm DL is connected to the control power supply N.

[0005] The beneficial effect of the present invention is that two electric contact pressure gauges are provided and different pressure values are set to achieve the purpose of automatic start and stop of two standby equipment, thereby ensuring the stable output of water supply pressure, improving the degree of automation of the equipment, and preventing pressure fluctuations from causing equipment shutdown and affecting tire production and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention will be further described below with reference to the accompanying drawings and examples.

[0007] Figure 1 It is a structural schematic diagram of the present invention.

[0008] In the figure, FR1. Thermal relay, SB1. Stop button, SB2. Start button, KM1. Contactor, FR2. Thermal relay, SB3. Stop button, SB4. Start button, KM2. Contactor, SA1. Transfer switch, FR3. Thermal relay, SB5. Stop button, SB6. Start button, KM3. Contactor, SA2. Transfer switch, FR4. Thermal relay, SB7. Stop button, SB8. Start button, KM4. Contactor, P1. Electric contact pressure gauge, P2. Electric contact pressure gauge, KA1. Intermediate relay, KA2. Intermediate relay, KA3. Intermediate relay, KA4. Intermediate relay, KA5. Intermediate relay, SB9. Stop button, DL. Sound and light alarm. DETAILED DESCRIPTION

[0009] In the figure, the upper end of the normally closed contact of the thermal relay FR1 of the present invention is connected to the control power supply L, and the lower end is connected to the upper end of the stop button SB1, the lower end of the stop button SB1 is connected to the upper end of the start button SB2, the lower end of the start button SB2 is connected to the upper end of the contactor KM1 coil, and the lower end of the contactor KM1 coil is connected to the control power supply N, the upper end of the contactor self-locking normally open contact KM1 is connected to the upper end of the start button SB2, and the lower end is connected to the lower end of the start button SB2, the upper end of the normally closed contact of the thermal relay FR2 is connected to the control power supply L, and the lower end is connected to the upper end of the stop button SB3, the lower end of the stop button SB3 is connected to the upper end of the start button SB4, the lower end of the start button SB4 is connected to the upper end of the contactor KM2 coil, and the lower end of the contactor KM2 coil is connected to the control power supply N. , the upper end of the contactor self-locking normally open contact KM2 is connected to the upper end of the start button SB4, and the lower end is connected to the lower end of the start button SB4. The upper end of the manual contact of the transfer switch SA1 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact of the thermal relay FR3, and the lower end of the normally closed contact of the thermal relay FR3 is connected to the upper end of the stop button SB5, and the lower end of the stop button SB5 is connected to the upper end of the start button SB6, and the lower end of the start button SB6 is connected to the upper end of the contactor KM3 coil, and the lower end of the contactor KM3 coil is connected to the control power supply N, the upper end of the automatic contact of the transfer switch SA1 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact KA1 of the intermediate relay, and the lower end of the normally closed contact KA1 of the intermediate relay is connected to the upper end of the normally open contact KA2 of the intermediate relay. The lower end of the normally open contact KA2 of the relay is connected to the upper end of the coil of the contactor KM3, the upper end of the self-locking contact KM3 of the contactor is connected to the upper end of the normally open contact of the intermediate relay KA2, and the lower end is connected to the upper end of the coil of the contactor KM3. The upper end of the manual contact of the transfer switch SA2 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact of the thermal relay FR4. The lower end of the normally closed contact of the thermal relay FR4 is connected to the upper end of the stop button SB7, the lower end of the stop button SB7 is connected to the upper end of the start button SB8, the lower end of the start button SB6 is connected to the upper end of the coil of the contactor KM4, the lower end of the coil of the contactor KM4 is connected to the control power supply N, the upper end of the automatic contact of the transfer switch SA2 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact KA3 of the intermediate relay. The lower end of the normally closed contact KA3 is connected to the upper end of the normally open contact KA4 of the intermediate relay, the lower end of the normally open contact KA4 of the intermediate relay is connected to the upper end of the coil of the contactor KM4, the upper end of the contactor self-locking contact KM4 is connected to the upper end of the normally open contact of the intermediate relay KA4, and the lower end is connected to the upper end of the coil of the contactor KM4. The upper end of the high limit contact of the electric contact pressure gauge P1 is connected to the control power supply L, and the lower end is connected to the upper end of the coil of the intermediate relay KA1, and the lower end of the coil of the intermediate relay KA1 is connected to the control power supply N. The upper end of the low limit contact of the electric contact pressure gauge P1 is connected to the control power supply L, and the lower end is connected to the upper end of the coil of the intermediate relay KA2, and the lower end of the coil of the intermediate relay KA2 is connected to the control power supply N. The upper end of the high limit contact of the electric contact pressure gauge P2 is connected to the control power supply L.The lower end is connected to the upper end of the coil of the intermediate relay KA3, the lower end of the coil of the intermediate relay KA3 is connected to the control power supply N, the upper end of the low limit contact of the electric contact pressure gauge P2 is connected to the control power supply L, the lower end is connected to the upper end of the coil of the intermediate relay KA4, the lower end of the coil of the intermediate relay KA4 is connected to the control power supply N, the upper end of the stop button SB9 is connected to the control power supply L, the lower end is connected to the upper end of the normally open contact of the intermediate relay KA2, the lower end is connected to the upper end of the coil of the intermediate relay KA5, the lower end of the coil of the intermediate relay KA5 is connected to the control power supply N, the upper end of the normally open contact of the intermediate relay KA4 is connected to the lower end of the stop button SB9, the lower end is connected to the lower end of the normally open contact of the intermediate relay KA2, the upper end of the normally open contact of the intermediate relay KA5 is connected to the lower end of the stop button SB9, the lower end is connected to the lower end of the normally open contact of the intermediate relay KA2, the upper end of the normally open contact of the intermediate relay KA5 is connected to the control power supply L, the lower end is connected to the upper end of the sound and light alarm DL, and the lower end of the sound and light alarm DL is connected to the control power supply N.

[0010] 1# and 2# water pumps are manually started and stopped, 3# and 4# water pumps are manually / automatically switched by the transfer switch. Two sets of high / low limit pressure values are set on two electric contact pressure gauges: 1. Low limit 0.38Mpa and high limit 0.4Mpa, 2. Low limit 0.36Mpa and high limit 0.4Mpa. During normal operation, 1# and 2# water pumps are manually started and run, and the transfer switches SA1 and SA2 are set to the automatic position. When the water supply pressure drops below 0.38Mpa, the low limit normally open contact of the electric contact pressure gauge P1 is closed, and the middle limit normally open contact is closed. The coil of intermediate relay KA2 is energized, the normally open contact of intermediate relay KA2 is closed, the coil of contactor KM3 is energized, the self-locking contact of contactor KM3 is closed, and the 3# water pump automatically starts to run and boost the pressure. At the same time, the normally open contact of intermediate relay KA2 is closed, the coil of intermediate relay KA5 is energized, the self-locking contact of intermediate relay KA5 is closed, the normally open contact of intermediate relay KA5 is closed, and the sound and light alarm DL is energized to alarm; when the water supply pressure rises to 0.4Mpa, the high limit normally open contact of electric contact pressure gauge P1 is closed, and the intermediate relay The coil of contactor KA1 is energized, the auxiliary normally closed contact of intermediate relay KA1 is disconnected, the coil of contactor KM3 loses power, 3# water pump stops, and the stop button SB9 is pressed at the same time, and the sound and light alarm DL stops alarming; when the water supply pressure continues to drop below 0.36Mpa, the low limit normally open contact of electric contact pressure gauge P2 is closed, the coil of intermediate relay KA4 is energized, the normally open contact of intermediate relay KA4 is closed, the coil of contactor KM4 is energized, the self-locking contact of contactor KM4 is closed, and 4# water pump automatically starts to run and boost the pressure. The normally open contact of the intermediate relay KA4 is closed, the coil of the intermediate relay KA5 is energized, the self-locking contact of the intermediate relay KA5 is closed, the normally open contact of the intermediate relay KA5 is closed, and the sound and light alarm DL is energized to alarm; when the water supply pressure rises to 0.4Mpa, the high limit normally open contact of the electric contact pressure gauge P2 is closed, the coil of the intermediate relay KA3 is energized, the auxiliary normally closed contact of the intermediate relay KA3 is disconnected, the coil of the contactor KM4 loses power, the 4# water pump stops, and the stop button SB9 is pressed at the same time, and the sound and light alarm DL stops alarming.

Claims

1. A water pump electric contact pressure gauge alarm self-starting device, characterized in that: The upper end of the normally closed contact of the thermal relay FR1 is connected to the control power supply L, and the lower end is connected to the upper end of the stop button SB1, the lower end of the stop button SB1 is connected to the upper end of the start button SB2, the lower end of the start button SB2 is connected to the upper end of the contactor KM1 coil, and the lower end of the contactor KM1 coil is connected to the control power supply N. The upper end of the contactor self-locking normally open contact KM1 is connected to the upper end of the start button SB2, and the lower end is connected to the lower end of the start button SB2. The upper end of the normally closed contact of the thermal relay FR2 is connected to the control power supply L, and the lower end is connected to the upper end of the stop button SB3, the lower end of the stop button SB3 is connected to the upper end of the start button SB4, the lower end of the start button SB4 is connected to the upper end of the contactor KM2 coil, and the lower end of the contactor KM2 coil is connected to the control power supply N. The upper end of the lock normally open contact KM2 is connected to the upper end of the start button SB4, and the lower end is connected to the lower end of the start button SB4. The upper end of the manual contact of the transfer switch SA1 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact of the thermal relay FR3. The lower end of the normally closed contact of the thermal relay FR3 is connected to the upper end of the stop button SB5. The lower end of the stop button SB5 is connected to the upper end of the start button SB6. The lower end of the start button SB6 is connected to the upper end of the contactor KM3 coil. The lower end of the contactor KM3 coil is connected to the control power supply N. The upper end of the automatic contact of the transfer switch SA1 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact KA1 of the intermediate relay. The lower end of the normally closed contact KA1 of the intermediate relay is connected to the upper end of the normally open contact KA2 of the intermediate relay. The lower end of the open contact KA2 is connected to the upper end of the contactor KM3 coil, the upper end of the contactor self-locking contact KM3 is connected to the upper end of the normally open contact of the intermediate relay KA2, and the lower end is connected to the upper end of the contactor KM3 coil. The upper end of the manual contact of the transfer switch SA2 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact of the thermal relay FR4. The lower end of the normally closed contact of the thermal relay FR4 is connected to the upper end of the stop button SB7, the lower end of the stop button SB7 is connected to the upper end of the start button SB8, the lower end of the start button SB6 is connected to the upper end of the contactor KM4 coil, the lower end of the contactor KM4 coil is connected to the control power supply N, the upper end of the automatic contact of the transfer switch SA2 is connected to the control power supply L, and the lower end is connected to the upper end of the normally closed contact KA3 of the intermediate relay. The intermediate relay is normally closed. The lower end of contact KA3 is connected to the upper end of the normally open contact KA4 of the intermediate relay, the lower end of the normally open contact KA4 of the intermediate relay is connected to the upper end of the coil of contactor KM4, the upper end of the self-locking contact KM4 of the contactor is connected to the upper end of the normally open contact of the intermediate relay KA4, and the lower end is connected to the upper end of the coil of contactor KM4. The upper end of the high limit contact of the electric contact pressure gauge P1 is connected to the control power supply L, and the lower end is connected to the upper end of the coil of the intermediate relay KA1, and the lower end of the coil of the intermediate relay KA1 is connected to the control power supply N. The upper end of the low limit contact of the electric contact pressure gauge P1 is connected to the control power supply L, and the lower end is connected to the upper end of the coil of the intermediate relay KA2, and the lower end of the coil of the intermediate relay KA2 is connected to the control power supply N. The upper end of the high limit contact of the electric contact pressure gauge P2 is connected to the control power supply L.The lower end is connected to the upper end of the coil of the intermediate relay KA3, the lower end of the coil of the intermediate relay KA3 is connected to the control power supply N, the upper end of the low limit contact of the electric contact pressure gauge P2 is connected to the control power supply L, the lower end is connected to the upper end of the coil of the intermediate relay KA4, the lower end of the coil of the intermediate relay KA4 is connected to the control power supply N, the upper end of the stop button SB9 is connected to the control power supply L, the lower end is connected to the upper end of the normally open contact of the intermediate relay KA2, the lower end is connected to the upper end of the coil of the intermediate relay KA5, the lower end of the coil of the intermediate relay KA5 is connected to the control power supply N, the upper end of the normally open contact of the intermediate relay KA4 is connected to the lower end of the stop button SB9, the lower end is connected to the lower end of the normally open contact of the intermediate relay KA2, the upper end of the normally open contact of the intermediate relay KA5 is connected to the lower end of the stop button SB9, the lower end is connected to the lower end of the normally open contact of the intermediate relay KA2, the upper end of the normally open contact of the intermediate relay KA5 is connected to the control power supply L, the lower end is connected to the upper end of the sound and light alarm DL, and the lower end of the sound and light alarm DL is connected to the control power supply N.

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