A drying equipment equipped with a medium-pressure steam temperature control device

Abstract

A drying device equipped with a medium-pressure steam temperature control device comprises a pipeline, an oven, a valve, a temperature control meter, a steam drum, and a hot water tank; the pipeline is divided into a steam inlet pipe, a steam outlet pipe, a steam inlet pipe of a steam drum, a blowdown pipe, a hot water circulation pipe, a steam supplement pipe and a steam exhaust pipe; the ovens are respectively divided into a first-stage oven, a second-stage oven, a third-stage oven, a fourth-stage oven, a fifth-stage oven, a sixth-stage oven, a seventh-stage oven, an eighth-stage oven and a ninth-stage oven; the valves comprise a manual stop valve, a large-flow electric shut-off valve, a small-flow electric shut-off valve, an electric regulating valve and a self-acting pressure reducing valve; the steam inlet pipe and the oven are connected in the middle with a manual stop valve and an electric regulating valve; the equipment has a fast heating speed, improves the drying efficiency, has a high safety factor, has a high degree of protection for the equipment, and has a good energy-saving effect.

Description

[Technical field]

[0001] The invention patent relates to the field of drying equipment, in particular to a drying equipment equipped with a medium-pressure steam temperature control device. [Background technology]

[0002] At present, the drying ovens in the printing and dyeing industry mainly use steam to heat the box body. The equipment heats up slowly and the drying effect is poor. In addition, when the medium-pressure steam temperature control device is turned on, since there may be a lot of condensed water in the radiator in the oven, a large amount of medium-pressure steam enters the radiator and contacts the condenser, which will cause explosion, causing abnormal noise and damage to the radiator. [Summary of the invention]

[0003] In order to solve the above problems, the present invention proposes a drying equipment equipped with a medium-pressure steam temperature control device, including a pipeline, an oven, a valve, a temperature control meter, a steam drum and a hot water tank; the pipeline is divided into a steam inlet pipe, a steam outlet pipe, a steam inlet pipe of the steam drum, a sewage pipe, a hot water circulation pipe, a steam supplement pipe and a steam exhaust pipe; the ovens are respectively a first-level oven, a second-level oven, a third-level oven, a fourth-level oven, a fifth-level oven, a sixth-level oven, a seventh-level oven, an eighth-level oven and a ninth-level oven; the valves include: a manual stop valve, a large-flow electric shut-off valve, a small-flow electric shut-off valve, an electric regulating valve and a self-operated pressure reducing valve, a bypass pipe is connected to the steam inlet pipe, a manual stop valve and an electric regulating valve are connected between the steam inlet pipe and the oven, an electric regulating valve is also provided on the steam outlet pipe, a temperature control meter is provided on the electric regulating valve, and a manual stop valve, a self-operated pressure reducing valve and a check valve are provided on the steam inlet pipe of the steam drum.

[0004] Preferably, a safety valve and a pressure gauge are provided on the top of the steam drum; a magnetic control level gauge is provided on one side of the steam drum, and a steam supply pipe is also provided on one side of the steam drum, and one end of the steam supply pipe is also connected to a power plant; hot water is provided in the steam drum, one end of the hot water circulation pipe and one end of the sewage pipe are connected to the steam drum, and the other end is connected to a hot water tank, a manual sewage valve is provided on the sewage pipe, and an electric regulating valve and a filter are also connected to the hot water circulation pipe, and a PID intelligent control instrument is also provided on the electric regulating valve connected to the hot water circulation pipe, the steam supply pipe is provided on the steam drum, and an electric regulating valve and a PID intelligent control instrument are also provided on the steam supply pipe, a pressure transmitter is also provided on the steam supply pipe, the exhaust pipe is connected to the top of the steam drum, and a self-operated pressure reducing valve is provided on the exhaust pipe.

[0005] Preferably, the large flow cut-off valve and the small flow cut-off valve are arranged on the steam inlet pipe 1; the manual stop valve and the filter are also arranged on the steam inlet pipe; a branch pipe is arranged on the steam inlet pipe, and a branch pipe is also arranged on the steam outlet pipe.

[0006] The present invention, when the temperature reaches the set value, closes the small flow electric cut-off valve on the bypass pipe of the steam inlet pipe, and opens the large flow electric cut-off valve of the steam inlet pipe at the same time, so that the equipment can be heated up quickly; when the temperature in the oven reaches the set value, the electric regulating valve connected to each stage of the oven automatically adjusts the valve opening, so that the temperature in the oven is always maintained at the set temperature value; the electric regulating valve on the steam outlet pipe receives the signal of the five-stage oven temperature control meter, and is synchronously adjusted with the five-stage oven inlet electric regulating valve to achieve energy saving effect; the self-operated valve on the steam drum reduces the pressure of the reflux steam whose calorific value does not match the pressure, so as to provide it for other workshops that need low-pressure steam, thereby achieving further steam reuse. When the reflux steam cannot meet the usage of the low-pressure steam workshop, the power plant connects the steam inlet pipe of the steam drum to supplement steam, ensure the steam usage of the low-pressure steam workshop, and recycles the hot water discharged from the steam drum by setting a hot water tank, a hot water circulation pipe and a filter. The equipment has a fast heating speed, improves the drying efficiency, has a high safety factor, has a high degree of protection for the equipment, and has a good energy saving effect.

Brief Description of the Drawings

[0007] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0008] In the figure: 1 steam inlet pipe, 101 branch pipe, 2 steam outlet pipe, 3 steam inlet pipe of sub-steam drum, 301 check valve, 4 blowdown pipe, 5 hot water circulation pipe, 6 supplementary steam pipe, 7 exhaust pipe, 8 first-stage oven, 9 second-stage oven, 10 third-stage oven, 11 fourth-stage oven, 12 fifth-stage oven, 13 sixth-stage oven, 14 seventh-stage oven, 15 eighth-stage oven, 16 ninth-stage oven, 17 manual stop valve, 18 large flow electric shut-off valve, 19 small flow electric shut-off valve, 20 electric regulating valve, 21 self-operated pressure reducing valve, 22 sub-steam drum, 23 hot water tank, 24 bypass pipe, 25 temperature control meter, 26 safety valve, 27 pressure gauge, 28 magnetic liquid level gauge, 29 manual blowdown valve, 30 filter, 31 PID intelligent control instrument, 32 pressure transmitter, 33 power plant. [Specific implementation method]

[0009] The present invention provides a drying device equipped with a medium-pressure steam temperature control device, including pipelines, ovens, valves, a temperature control meter 26, a steam drum 22 and a hot water tank 23; the pipelines are divided into a steam inlet pipe 1, a steam outlet pipe 2, a steam drum steam inlet pipe 3, a blowdown pipe 4, a hot water circulation pipe 5, a steam supplement pipe 6 and a steam exhaust pipe 7; the ovens are respectively a first-stage oven 8, a second-stage oven 9, a third-stage oven 10, a fourth-stage oven 11, a fifth-stage oven 12, a sixth-stage oven 13, a seventh-stage oven 14, an eighth-stage oven 15 and a ninth-stage oven 16; the valves are respectively Including: manual stop valve 17, large flow electric shut-off valve 18, small flow electric shut-off valve 19, electric regulating valve 20 and self-operated pressure reducing valve 21, the steam inlet pipe is connected with a bypass pipe 24, the steam inlet pipe 1 and the middle of the oven are connected with a manual stop valve 17 and an electric regulating valve 20, the steam outlet pipe 2 is also provided with an electric regulating valve 20, the electric regulating valve 20 is provided with a temperature control meter 25, the steam inlet pipe 3 of the steam drum is provided with a manual stop valve 17, a self-operated pressure reducing valve 21 and a check valve 301. Among them, a safety valve 26 and a pressure gauge 27 are arranged on the top of the steam drum 22; a magnetic control level gauge 28 is arranged on one side of the steam drum 22, and a supplementary steam pipe 6 is also arranged on one side of the steam drum 22, and one end of the supplementary steam pipe 6 is also connected to a power plant 33, and hot water is arranged in the steam drum 22, one end of the hot water circulation pipe 5 and one end of the sewage pipe 4 are connected to the steam drum 22, and the other end is connected to the hot water tank 23, and a manual sewage valve 29 is arranged on the sewage pipe 4, and an electric regulating valve 20 and a filter 30 are also connected to the hot water circulation pipe 5, and the electric regulating valve 20 connected to the hot water circulation pipe 5 is also provided with a P ID intelligent control instrument 31, the steam supply pipe 6 is arranged on the steam drum 22, and the steam supply pipe 6 is also provided with an electric regulating valve 20 and a PID intelligent control instrument 31, and the steam supply pipe 6 is also provided with a pressure transmitter 32, the exhaust pipe 7 is connected to the top of the steam drum 22, and the exhaust pipe 7 is provided with a self-operated pressure reducing valve 22; the large flow cut-off valve 18 and the small flow cut-off valve 19 are arranged on the steam inlet pipe 1; the manual stop valve 17 and the filter 30 are also arranged on the steam inlet pipe 1, and the steam inlet pipe 1 is provided with a branch pipe 101, and the steam outlet pipe 2 is also provided with a branch pipe 101.

[0010] According to the present invention, when the temperature reaches the set value, the manual stop valve on the steam inlet pipe 1 is opened, the small flow electric cut-off valve 19 on the bypass pipe 24 is closed, and the large flow electric cut-off valve 18 on the steam inlet pipe is opened at the same time, so that the equipment can be heated up quickly; when the temperature in the oven reaches the set value, the electric regulating valve 20 connected to each stage of the oven automatically adjusts the valve opening, so that the temperature in the oven is always maintained at the set temperature value; the electric regulating valve 20 on the steam outlet pipe 2 receives the signal of the temperature control meter 25 on the five-stage oven 12 and is synchronously adjusted with the electric regulating valve 20 of the five-stage oven inlet 25 to achieve energy-saving effect; the self-operated pressure reducing valve on the steam drum 22 reduces the pressure of the reflux steam whose calorific value does not match the pressure, so as to provide it for use by other workshops that need low-pressure steam, thereby achieving further steam reuse. When the reflux steam cannot meet the usage of the low-pressure steam workshop, the power plant connects the steam inlet pipe of the steam drum to add steam to ensure the steam usage of the low-pressure steam workshop. The hot water discharged from the steam drum 22 is recycled by setting a hot water pool 23, a hot water circulation pipe 5 and a filter 30. This equipment has a fast heating speed, improves the drying efficiency, has a high safety factor, has a high degree of protection for the equipment, and has a good energy-saving effect.

[0011] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A drying equipment equipped with a medium-pressure steam temperature control device, comprising pipelines, ovens, valves, temperature control meters, steam drums, and hot water tanks; the pipelines are divided into steam inlet pipes, steam outlet pipes, steam inlet pipes for steam drums, blowdown pipes, hot water circulation pipes, supplementary steam pipes, and exhaust pipes; the ovens are respectively a first-stage oven, a second-stage oven, a third-stage oven, a fourth-stage oven, a fifth-stage oven, a sixth-stage oven, a seventh-stage oven, an eighth-stage oven, and a ninth-stage oven; the valves include: Manual stop valve, large flow electric shut-off valve, small flow electric shut-off valve, electric regulating valve and self-operated pressure reducing valve. The steam inlet pipe is connected with a bypass pipe. The steam inlet pipe and the oven are connected with a manual stop valve and an electric regulating valve. The steam outlet pipe is also provided with an electric regulating valve. The electric regulating valve is provided with a temperature control meter. The steam inlet pipe of the steam drum is provided with a manual stop valve, a self-operated pressure reducing valve and a check valve. The top of the steam drum is provided with a safety valve and a pressure gauge. One side of the steam drum is provided with a magnetic control level gauge. One side of the steam drum is also provided with a steam supply pipe. One end of the steam supply pipe is also connected to the power plant. Hot water is provided in the steam drum. One end of the hot water circulation pipe and one end of the sewage pipe are connected to the steam drum, and the other end is connected to the hot water pool. A manual sewage valve is provided on the sewage pipe. An electric regulating valve and a filter are also connected to the hot water circulation pipe. A PID intelligent control instrument is also provided on the electric regulating valve connected to the hot water circulation pipe. The steam supply pipe is provided on the steam drum. An electric regulating valve and a PID intelligent control instrument are also provided on the steam supply pipe. A pressure transmitter is also provided on the steam supply pipe. The exhaust pipe is connected to the top of the steam drum. The ends are connected, and a self-operated pressure reducing valve is arranged on the exhaust pipe; the large-flow electric shut-off valve and the small-flow electric shut-off valve are arranged on the steam inlet pipe; the manual shut-off valve and the filter are also arranged on the steam inlet pipe; a branch pipe is arranged on the steam inlet pipe, and a branch pipe is also arranged on the steam outlet pipe; when the temperature reaches the set value, the small-flow electric shut-off valve on the bypass pipe of the steam inlet pipe is closed, and the large-flow electric shut-off valve on the steam inlet pipe is opened at the same time, so that the equipment is heated up quickly; when the temperature in the oven reaches the set value, the electric regulating valve connected to each stage of the oven automatically adjusts the valve opening so that the temperature in the oven Always maintain the set temperature value; the electric regulating valve on the steam outlet pipe receives the signal from the five-stage oven temperature control meter and adjusts synchronously with the five-stage oven inlet electric regulating valve to achieve energy-saving effect; the self-operated valve on the sub-steam drum reduces the pressure of the reflux steam whose calorific value does not match the pressure, so as to provide it for other workshops that need low-pressure steam, thereby achieving further steam reuse; when the reflux steam cannot meet the usage of the low-pressure steam workshop, the power plant connects the steam inlet pipe of the sub-steam drum to supplement steam to ensure the steam usage of the low-pressure steam workshop, and recycles the hot water discharged from the sub-steam drum by setting a hot water pool, hot water circulation pipe and filter.

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