Energy-saving type steam cyclic utilization pre-foaming machine

Abstract

The utility model discloses an energy-saving pre-foaming machine capable of recycling steam, which is characterized in that bled steam discharged from a pre-foaming barrel is heated to meet the required temperature requirement and then is led into a steam chamber to be effectively utilized; therefore, energy utilization closed-loop circulation is formed, water serves as a carrier for energy transfer, and the purposes of saving water and energy are achieved. Wherein top bled steam in the pre-foaming barrel is exhausted through the steam exhaust pipe, the bled steam is guided into the steam chamber through the sucking pump to be recycled, in the guiding-in process, the bled steam can be heated through the heater so that the required temperature requirement can be met, and the bled steam can be heated through the heat exchanger so that the required temperature requirement can be met. And the energy-saving and environment-friendly effects are achieved. Besides, recycled steam is guided into the hollow cavity of the scraper through the steam guide pipe, and the raw materials entering the bottom in the pre-foaming barrel are subjected to turbulent flow stirring through the exhaust holes, so that the heat of the steam is uniformly mixed with the raw materials at the bottom of the pre-foaming barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving and environmental protection, in particular to an energy-saving steam recycling pre-generator. Background Art

[0002] In the prior art, steam is introduced into a pre-expansion barrel to process EPS foam materials; the exhaust steam from the top of the pre-expansion barrel contains spent steam at a certain temperature, which also contains a large amount of latent heat. Conventionally, after the production and processing of EPS foaming, this part of the steam is directly discharged, resulting in a waste of part of the energy, which is not effectively utilized. Utility Model Content

[0003] The utility model aims to provide an energy-saving steam recycling pre-expander, which solves the problem that the conventional pre-expander directly discharges the top steam after processing EPS foaming, resulting in that the energy cannot be effectively utilized.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides an energy-saving steam recycling pre-expander, comprising two or more pre-expander barrels arranged on the same support, a feeding system for feeding the pre-expander barrels, a vacuum system for providing negative pressure to the pre-expander barrels and adjusting the internal temperature thereof, a heating system installed at the bottom of the pre-expander barrels for uniform heating, and a material guiding mechanism for facilitating the adjustment of material guiding; the characteristics are:

[0006] The heating system comprises a steam chamber located at the bottom of the pre-fermentation barrel and a steam generator for supplying gas to the steam chamber;

[0007] A steam exhaust pipe is provided on the top of the pre-expansion barrel, and a vacuum pump is connected to the steam exhaust pipe, and the exhaust steam on the top of the pre-expansion barrel is sent into the steam chamber by the vacuum pump and the steam return pipe;

[0008] A heater is provided on the steam return pipe, and the steam return pipe is introduced into the pre-heating barrel through a steam guide pipe.

[0009] Furthermore, the exhaust pipe is connected to the exhaust pump via a steam extraction pipe, and a temperature sensor is arranged on the steam extraction pipe. A second temperature sensor is arranged on the steam return pipe and downstream of the heater.

[0010] Furthermore, the heater is an electric heater arranged outside the steam return pipe.

[0011] Furthermore, the heater may also be a heat exchanger for heating the steam return pipe, wherein the heat source of the heat exchanger comes from heating oil or factory boiler valve steam.

[0012] Furthermore, a solenoid valve is provided on the exhaust pipe.

[0013] Furthermore, the pre-barrel is arranged in a single barrel or a double barrel.

[0014] Furthermore, a stirring mechanism is arranged in the pre-fermentation barrel, wherein the stirring mechanism comprises a stirring shaft driven by a motor, a plurality of stirring blades arranged on the stirring shaft, and a scraper arranged at the lowermost end of the stirring shaft, wherein a hollow cavity is arranged in the scraper, and an exhaust hole communicating with the hollow cavity is opened at the bottom of the scraper;

[0015] The gas outlet end of the steam guide pipe is communicated with the hollow cavity.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] In the present application, the spent steam discharged from the pre-expansion barrel is heated to reach the required temperature requirement and then introduced into the steam chamber for effective utilization; thereby forming a closed-loop cycle of energy utilization, so that water is used as a carrier of energy transfer, thereby achieving the purpose of saving water and energy; wherein the top spent steam in the pre-expansion barrel is exhausted through the exhaust pipe, and the exhausted steam is introduced into the steam chamber for recycling by using the vacuum pump. During the introduction process, the spent steam can be heated by a heater to reach the required temperature requirement, and the spent steam can also be heated by a heat exchanger to achieve the effect of energy saving and environmental protection.

[0018] In addition, the recycled steam is introduced into the hollow cavity of the scraper through the steam guide pipe, and then the raw materials entering the bottom of the pre-fermentation barrel are turbulently stirred through the exhaust hole, so that the steam heat is evenly mixed with the raw materials at the bottom of the pre-fermentation barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a structural schematic diagram of the energy-saving steam recycling pre-generator of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of steam recycling in a double-barrel pre-expander;

[0022] Figure 3 This is a schematic diagram of the structure of steam recycling in a single barrel pre-steamer;

[0023] Figure 4 It is a schematic diagram of the stirring mechanism in the barrel of the pre-expander of the utility model for energy-saving steam recycling;

[0024] Figure 5 for Figure 4 An enlarged schematic diagram of the structure of the scraper at the bottom of the stirring mechanism.

[0025] Explanation of the reference numerals: 1. pre-barrel; 11. exhaust pipe; 12. stirring shaft; 13. scraper; 131. exhaust hole; 14. stirring blade; 2. steam chamber; 3. steam generator; 31. main steam pipe; 4. temperature sensor; 5. vacuum pump; 51. steam extraction pipe; 6. heater; 61. steam guide pipe. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figure 1 As shown, this embodiment discloses an energy-saving steam recycling pre-expander, comprising two or more pre-expander barrels mounted on the same bracket, a feeding system for providing feed to the pre-expander barrels, a vacuum system for providing negative pressure to the pre-expander barrels and adjusting the internal temperature thereof, and a heating system installed at the bottom of the pre-expander barrels for uniform heating and a material guiding mechanism for facilitating the adjustment of material guiding;

[0028] This embodiment is an improvement made on the basis of a pre-expander and its use method disclosed in publication number: CN112721003A;

[0029] like Figure 1 As shown, the heating system comprises a steam chamber 2 located at the bottom of the pre-fermentation barrel and a steam generator 3 for supplying gas to the steam chamber 2;

[0030] In this embodiment, a steam exhaust pipe 11 is installed on the top of the pre-expanding barrel, and the steam exhaust pipe 11 is connected to a vacuum pump 5, and the exhaust steam on the top of the pre-expanding barrel is sent into the steam chamber 2 by means of the vacuum pump 5 and the steam return pipe 52; a heater 6 is installed on the steam return pipe 52, and the steam return pipe 52 is introduced into the pre-expanding barrel through a steam guide pipe 61;

[0031] In the prior art, the exhaust steam from the top of the pre-expansion barrel contains spent steam at a certain temperature, which also contains a large amount of latent heat. Conventionally, after the production and processing of EPS foaming, this part of the steam is directly discharged, resulting in a waste of some energy, which is not effectively utilized;

[0032] Based on this, in this embodiment, the spent steam discharged from the pre-heating barrel is heated to the required temperature and then introduced into the steam chamber 2 for effective utilization;

[0033] This forms a closed-loop cycle of energy utilization, making water the carrier of energy transfer, thereby achieving the goals of water and energy saving.

[0034] In this embodiment, the exhaust pipe 11 is connected to the exhaust pump 5 through the exhaust pipe 51, and a temperature sensor 4 is installed on the exhaust pipe 51 for detecting the temperature of the exhausted steam. A second temperature sensor is installed on the return steam pipe 52 and downstream of the heater 6 for detecting whether the temperature of the heated exhausted steam reaches the required temperature.

[0035] In a specific implementation, the heater 6 is an electric heater installed outside the steam return pipe 52, so as to heat the exhaust steam passing through the steam return pipe 52 to reach the required temperature requirement;

[0036] In order to improve the heat exchange efficiency, the return steam pipe 52 is designed as a coil structure, thereby improving the heating efficiency.

[0037] In this embodiment, the heater 6 can also be a heat exchanger for heating the return steam pipe 52, wherein the heat source of the heat exchanger comes from heating oil or factory boiler valve steam, thereby converting the heat of the factory's waste steam for utilization, thereby turning waste into energy and saving energy and protecting the environment.

[0038] In this embodiment, a solenoid valve is installed on the exhaust pipe 11, and specifically, a pressure sensor installed on the pre-barrel 1 is used for detection. When the required pressure discharge is reached, the signal is transmitted to the controller through the pressure sensor, and the controller drives the solenoid valve to open the exhaust pipe 11, and starts the vacuum pump 5 to extract air.

[0039] The working process in this embodiment:

[0040] The top spent steam in the pre-barrel 1 is exhausted through the exhaust pipe 11, and the spent steam is introduced into the steam chamber 2 for recycling by the vacuum pump 5. During the introduction process, the spent steam can be heated by the heater 6 to reach the required temperature requirement, and the spent steam can also be heated by the heat exchanger to achieve the effect of energy saving and environmental protection.

[0041] In this embodiment, Figure 2 and Figure 3 As shown, the pre-barrel is arranged in a single barrel or a double barrel.

[0042] Example 2

[0043] In this embodiment, based on Embodiment 1;

[0044] like Figure 4 and Figure 5As shown, a stirring mechanism is installed in the pre-fermentation barrel 1, wherein the stirring mechanism includes a stirring shaft 12 driven by a motor, a plurality of stirring blades 14 installed on the stirring shaft 12, and a scraper 13 installed at the lowermost end of the stirring shaft 12, wherein a hollow cavity is provided in the scraper 13, and an exhaust hole 131 communicating with the hollow cavity is provided at the bottom of the scraper 13; wherein the gas outlet end of the steam guide pipe 61 is communicated with the hollow cavity; specifically, a blind hole is provided in the lower end of the stirring shaft 12, and a reserved hole communicating with the hollow cavity is provided on its side wall; the gas outlet end of the steam guide pipe 61 is connected to the lower end of the stirring shaft 12 through a sealed bearing to facilitate the introduction of steam;

[0045] When in use, the recycled steam is introduced into the hollow cavity of the scraper 13 through the steam guide pipe 61, and then through the exhaust hole 131 opened at the bottom of the scraper 13, so as to turbulently stir the raw materials entering the bottom of the pre-fermentation barrel 1, so that the steam heat is evenly mixed with the raw materials at the bottom of the pre-fermentation barrel 1.

[0046] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solution of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. An energy-saving steam recycling pre-expander, comprising two or more pre-expander barrels arranged on the same support, a feeding system for feeding the pre-expander barrels, a vacuum system for providing negative pressure to the pre-expander barrels and adjusting the internal temperature thereof, a heating system installed at the bottom of the pre-expander barrels for uniform heating, and a material guiding mechanism for facilitating the adjustment of material guiding; characterized in that: The heating system comprises a steam chamber (2) located at the bottom of the pre-fermentation barrel and a steam generator (3) for supplying gas to the steam chamber (2); The top of the pre-flanging barrel is provided with an exhaust pipe (11), the exhaust pipe (11) is connected to an air extraction pump (5), and the exhaust steam at the top of the pre-flanging barrel is sent into the steam chamber (2) by means of the air extraction pump (5) and the steam return pipe (52); A heater (6) is provided on the steam return pipe (52), and the steam return pipe (52) is introduced into the pre-heating barrel through a steam guide pipe (61).

2. The energy-saving steam recycling pre-expander according to claim 1, characterized in that: The exhaust pipe (11) is connected to the exhaust pump (5) via an exhaust pipe (51), a temperature sensor (4) is provided on the exhaust pipe (51), and a second temperature sensor is provided on the return pipe (52) downstream of the heater (6).

3. The energy-saving steam recycling pre-expander according to claim 1, characterized in that: The heater (6) is an electric heater arranged outside the steam return pipe (52).

4. The energy-saving steam recycling pre-expander according to claim 1, characterized in that: The heater (6) may also be a heat exchanger for heating the steam return pipe (52), wherein the heat source of the heat exchanger comes from heating oil or factory boiler valve steam.

5. The energy-saving steam recycling pre-expander according to claim 1, characterized in that: A solenoid valve is arranged on the exhaust pipe (11).

6. The energy-saving steam recycling pre-expander according to claim 1, characterized in that: The pre-barrel is arranged in a single barrel or a double barrel.

7. The energy-saving steam recycling pre-expander according to claim 1, characterized in that: A stirring mechanism is arranged in the pre-fermentation barrel (1), wherein the stirring mechanism comprises a stirring shaft (12) driven by a motor, a plurality of stirring blades (14) arranged on the stirring shaft (12), and a scraper (13) arranged at the lowermost end of the stirring shaft (12), wherein a hollow cavity is arranged in the scraper (13), and an exhaust hole (131) communicating with the hollow cavity is opened at the bottom of the scraper (13); The gas outlet end of the steam guide pipe (61) is in communication with the hollow cavity.

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