Steam recycling device

Abstract

The utility model discloses a steam recycling device, which belongs to the technical field of steam recycling equipment, and comprises an ejector, an ejection pipeline, a first control valve, a discharge pipeline and a second control valve, the ejector is provided with a first inlet, an ejection inlet and a mixed outlet, the first inlet is used for being connected with a component for introducing steam, and the second control valve is used for being connected with the discharge pipeline. The mixed outlet is connected with the steam inlet; one end of the injection pipeline is connected with the steam outlet, and the other end is connected with the injection inlet; the first control valve is arranged on the injection pipeline and used for controlling connection and disconnection of the injection pipeline and the steam outlet. The discharge pipeline is connected with the steam outlet; the second control valve is used for controlling connection and disconnection of the discharge pipeline and the steam outlet, steam recycling is achieved, and the recycling rate is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam recovery equipment technical field, especially relates to a steam recycling device. BACKGROUND

[0002] Foam as the necessary product of daily life has been playing an important role in the fields of packaging, transportation, fresh food, automobile structure and the like. Steam is a necessary energy for foam production, and in the production process, steam needs to penetrate foam beads so that the foam beads are heated and expanded and fused.

[0003] In the related art, in the penetration process, a large amount of steam is discharged from the equipment and cannot be effectively utilized, or there is a defect that the steam recycling rate is low. UTILITY MODEL CONTENT

[0004] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a steam recycling device, which is beneficial to realize recycling and utilization of steam and improve the recycling rate.

[0005] The steam recycling device according to the utility model embodiment is applied to a foam forming mold, the foam forming mold has a steam inlet and a steam outlet, and the steam recycling device comprises: an ejector having a first inlet, an injection inlet and a mixing outlet, the first inlet is used to be connected with a component through which steam is introduced, and the mixing outlet is connected with the steam inlet; an injection pipeline, one end of which is connected with the steam outlet and the other end of which is connected with the injection inlet; a first control valve arranged in the injection pipeline and used to control the on-off of the injection pipeline and the steam outlet; a discharge pipeline connected with the steam outlet; and a second control valve used to control the on-off of the discharge pipeline and the steam outlet.

[0006] The steam recycling device has at least the following beneficial effects: the steam recycling device comprises an ejector, the ejector has a first inlet, an injection inlet and a mixing outlet, the first inlet is used for being connected with a component into which steam is introduced, that is, the first inlet is connected with a main air inlet pipeline, high-temperature and high-pressure steam is introduced into the ejector from the first inlet, the mixing outlet is connected with a steam inlet of a foam forming mold, a first control valve is used for controlling the on-off of an injection pipeline and a steam outlet, a second control valve is used for controlling the on-off of a discharge pipeline and the steam outlet, when the first control valve is opened and the second control valve is closed, high-temperature and high-pressure steam is used for heating and penetrating the beads located in the foam forming mold, so that the beads are expanded and fused, the waste steam after penetration is conducted to the injection pipeline from the steam outlet, that is, the waste steam after penetration is introduced into the injection pipeline, the waste steam is used as injection steam, the high-temperature and high-pressure steam introduced from the first inlet can be used as working steam, the pressure of the working steam is greater than that of the injection steam, the working steam can be used for realizing the injection of the injection steam, so as to realize the recycling of the steam, the working steam and the injection steam are mixed to form mixed steam, the mixed steam is introduced into the foam forming mold again, so as to realize the recycling of the steam, and the recycling of the steam is beneficial to improving the recycling rate of the steam.

[0007] According to some embodiments of the utility model, the steam recycling device further comprises an energy accumulator, the energy accumulator is connected to the injection pipeline, and is used for storing the injection steam.

[0008] The steam recycling device further comprises an energy accumulator, the energy accumulator is connected to the injection pipeline, and is used for storing the injection steam after penetration, because the pressure and the temperature in the energy accumulator are basically stable, according to the Avogadro's law of gases, under the same temperature and pressure, the same volume of any gas contains the same number of molecules, and the average relative molecular mass of air is greater than that of steam, that is, the density of air is greater than that of steam, so that the residual air and other impurity gases move to the lower end of the energy accumulator, and the steam moves to the upper end of the energy accumulator, thereby realizing the stratification of the steam and the air, that is, the purification of the steam can be realized in the energy accumulator, and the setting of the energy accumulator can make the supply of the injection steam more stable.

[0009] According to some embodiments of the utility model, the energy accumulator is connected with an exhaust valve, the exhaust valve is used for controlling the internal pressure of the energy accumulator.

[0010] Specifically, the energy accumulator is connected with an exhaust valve, and the internal pressure of the energy accumulator can be controlled in a preset range by opening and closing the exhaust valve. When the first control valve is opened and the second control valve is closed, the injection pipeline is communicated with the steam outlet, and the pressure at the steam outlet can be increased by pressure transmission of the energy accumulator, so that the exhaust steam discharged from the foam forming mold is reduced, the penetration effect on the foam beads is improved, and the pressure of the injection steam is increased, so that the injection of the working steam on the injection steam is more stable, and more exhaust steam is injected.

[0011] According to some embodiments of the utility model, the steam recycling device further comprises a heater connected to the injection pipeline and located at one end of the energy accumulator close to the ejector, for heating the injection steam.

[0012] Specifically, considering that the temperature of the steam will decrease after penetrating the foam forming mold, the steam recycling device further comprises a heater connected to the injection pipeline and located at one end of the energy accumulator close to the ejector, for heating the injection steam, so that the temperature of the mixed steam formed by mixing the injection steam and the working steam is increased. Compared with vaporizing water into steam, the steam recycling device can effectively reduce the required heat by re-heating the steam, so that the economic value of the steam recycling device is higher.

[0013] According to some embodiments of the utility model, the heater has a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is communicated with the injection pipeline, one end of the second heat exchange channel is connected with a component into which steam is introduced, and the other end is connected with a trap valve for opening and closing the second heat exchange channel.

[0014] That is, the heater can be a heat exchanger, the heat exchanger has a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is communicated with the injection pipeline, so that the exhaust steam in the injection pipeline can pass through the first heat exchange channel, and one end of the second heat exchange channel is connected with a component into which steam is introduced, that is, the steam recycling device can use the introduced steam as a heat medium, and part of the introduced steam is diverted to the second heat exchange channel, and the heat is transferred between the introduced steam and the injection steam to indirectly heat the injection steam. Compared with vaporizing water into steam, the steam recycling device can effectively reduce the required heat by re-heating the steam, so that the economic value of the steam recycling device is higher. The introduced steam releases heat in the second heat exchange channel and condenses into liquid water, and the other end of the second heat exchange channel is connected with a trap valve, and the liquid water condensed in the second heat exchange channel can be discharged by opening the trap valve.

[0015] According to some embodiments of the present application, the steam recycling device further comprises a third control valve connected to the ejector pipeline, the energy accumulator and the heater are arranged between the first control valve and the third control valve, and the third control valve is used for controlling the on-off of the ejector pipeline and the ejector inlet.

[0016] Specifically, the third control valve is arranged on the ejector pipeline, and the energy accumulator and the heater are both arranged between the first control valve and the third control valve. When the first control valve and the third control valve are both opened, the exhaust steam discharged from the foam forming mold can be introduced into the ejector through the ejector pipeline. The third control valve is used for controlling the on-off of the ejector pipeline and the ejector inlet. When the third control valve is closed, the communication between the energy accumulator, the heater and the ejector can be blocked.

[0017] According to some embodiments of the present application, the ejector, the ejector pipeline and the first control valve jointly constitute a recycling assembly, and a plurality of recycling assemblies are arranged, and the plurality of recycling assemblies are all connected with the energy accumulator.

[0018] Specifically, the steam recycling device is provided with a plurality of recycling assemblies, and the recycling assembly comprises the ejector, the ejector pipeline and the first control valve. The plurality of recycling assemblies are all connected with the energy accumulator, that is, one energy accumulator can be connected with the foam forming molds of the plurality of recycling assemblies, so as to store the exhaust steam after penetrating the plurality of foam forming molds, and the plurality of recycling assemblies are interconnected, so as to ensure the stability of the introduced steam.

[0019] According to some embodiments of the present application, the steam recycling device further comprises a steam purifier, and the steam purifier is connected to the ejector pipeline and used for removing the impurity gas in the introduced steam.

[0020] Specifically, since the foam forming mold contains air in the initial state, and there is foaming gas between the foam beads, the introduced steam after penetrating contains impurity gas and condensate water generated by the steam. In order to reduce or avoid the adverse effects of the impurity gas on the reuse of the steam for penetration, the steam recycling device further comprises a steam purifier, and the steam purifier is connected to the ejector pipeline. When the introduced steam passes through the steam purifier, the steam purifier can be used for removing the impurity gas in the introduced steam, so as to purify the steam and realize the recycling of the steam.

[0021] According to some embodiments of the present application, the steam purifier comprises an upper pipeline and a lower pipeline, the upper pipeline and the lower pipeline are arranged in an up-down mode, the upper pipeline and the lower pipeline are communicated, two ends of the steam purifier are respectively provided with a second inlet and a purification outlet, the purification outlet comprises a first outlet arranged at the tail of the upper pipeline and a second outlet arranged at the tail of the lower pipeline, the second inlet is connected with the steam outlet, and the first outlet is connected with the ejector inlet.

[0022] Specifically, the steam purifier comprises an upper pipeline and a lower pipeline arranged in an up-down manner, and a second inlet and a purifying outlet are arranged at two ends of the steam purifier respectively, the second inlet can be communicated with the steam outlet of the foam forming mold, that is, the waste steam mixed with air and water can be introduced into the steam purifier from the steam outlet, according to the Avogadro's law, under the same temperature and pressure, the same volume of any gas contains the same number of molecules, and the average relative molecular mass of air is greater than that of steam, that is, the density of air is greater than that of steam, so that the waste steam introduced into the steam purifier is deposited in layers, the steam with relatively small density flows to the upper pipeline, and the air and water with relatively large density are deposited to the lower pipeline, so that the separation of steam, air and water can be realized, the first outlet is arranged at the tail end of the upper pipeline, the first outlet is communicated with the injection inlet, and the steam after purification can be introduced into the ejector again from the first outlet, and the air and water can be collected from the second outlet.

[0023] According to some embodiments of the present application, the steam recycling device further comprises a fourth control valve, which is used to control the on-off of the first inlet and the component into which the steam is introduced.

[0024] Specifically, in order to control the operation of the steam recycling device according to the foam production process, the steam recycling device further comprises a fourth control valve, which is used to control the on-off of the first inlet and the component into which the steam is introduced. When the fourth control valve is opened, the ejector can be communicated with the component into which the steam is introduced, so that the working steam is introduced into the ejector to realize the injection of the injected steam. When the penetration is completed, the fourth control valve can be controlled to be closed, so that the ejector is separated from the component into which the steam is introduced.

[0025] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below in combination with the drawings and embodiments, in which:

[0027] Figure 1 It is a structure schematic view of the steam recycling device of an embodiment of the present application.

[0028] LIST OF ELEMENTS

[0029] 100, ejector; 110, first inlet; 120, injection inlet; 130, mixing outlet;

[0030] 200, foam forming mold; 210, steam inlet; 220, steam outlet;

[0031] 300, injection pipeline;

[0032] 410, first control valve; 420, second control valve; 430, third control valve; 440, fourth control valve; 450, drain valve;

[0033] 500, discharge line;

[0034] 600, energy storage device;

[0035] 700, heater;

[0036] 800, steam purifier. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0038] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0039] In the description of the present application, the plural means more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0040] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0041] With the development of human economic life, energy saving has been paid more and more attention by people, and saving energy and reducing carbon dioxide emission have become the long-term goal of the society.

[0042] Foam as a necessary product of daily life has been playing an important role in the fields of packaging, transportation, fresh food, automobile structural parts, etc. At present, the foam includes EPS (Expanded Polystyrene), EPP (Expanded Polypropylene), ETPU (Expanded Thermoplastic Polyurethane), etc. Steam as a necessary energy for foam production, in the production process, the process needs steam to penetrate through the foam beads, so that the foam beads are heated and expanded, fused, to realize the forming of the foam.

[0043] In the penetration process, a large amount of steam is discharged from the equipment and is wasted without being utilized, although some technologies mention collecting steam and utilizing it in other equipment such as a drying room, but there is a common defect that the utilization rate is relatively low.

[0044] With reference to Figure 1 The steam recycling device of an embodiment of the utility model, applied to foam forming die 200, foam forming die 200 includes fixed die and movable die, movable die and fixed die can be close to each other or away from each other. After the user places the foam beads between the movable die and the fixed die, the fixed die and the fixed die can be connected to form a foaming chamber for the foaming of the foam beads. One of the movable die and the fixed die is communicated with the steam inlet 210, and the other is communicated with the steam outlet 220. The steam recycling device includes an ejector 100, an ejector pipeline 300, a first control valve 410, a discharge pipeline 500 and a second control valve 420.

[0045] With reference to Figure 1 The ejector 100 has a first inlet 110, an injection inlet 120 and a mixing outlet 130, the first inlet 110 and the mixing outlet 130 are located on the same straight line, and the axis of the injection inlet 120 and the axis of the first inlet 110 are arranged at an angle. The first inlet 110 is used to be connected with the component through which the steam is introduced. The component through which the steam is introduced can be a main air inlet pipeline. The external steam generator can generate high-temperature and high-pressure steam, and the high-temperature and high-pressure steam is introduced into the ejector 100 through the main air inlet pipeline through the first inlet 110. The mixing outlet 130 is communicated with the steam inlet 210, so that the steam heats and penetrates the beads located in the foam forming die 200, so that the beads expand and fuse.

[0046] One end of the ejector pipeline 300 is connected with the steam outlet 220, and the other end is connected with the injection inlet 120. The first control valve 410 is arranged in the ejector pipeline 300, and is used to control the on-off of the ejector pipeline 300 and the steam outlet 220. The discharge pipeline 500 is connected with the steam outlet 220, and the second control valve 420 is used to control the on-off of the discharge pipeline 500 and the steam outlet 220.

[0047] When the first control valve 410 is opened and the second control valve 420 is closed, the waste steam after penetration is conducted from the steam outlet 220 into the ejector pipeline 300, the waste steam is used as the ejecting steam, the steam conducted from the first inlet 110 can be used as the working steam, the pressure of the working steam is greater than the pressure of the ejecting steam, the steam recycling device can realize the ejecting of the ejecting steam through the working steam, so as to realize the recycling of the steam, the working steam is mixed with the ejecting steam to form mixed steam, and the mixed steam is re-conducted into the foam forming mold 200, so as to realize the recycling of the steam, and through the recycling of the steam, the recycling rate of the steam can be improved.

[0048] When the first control valve 410 is closed and the second control valve 420 is opened, the impurity gas such as air discharged from the foam forming mold 200 can be conducted into the discharge pipeline 500, one end of the discharge pipeline 500 is connected with the steam outlet 220, and the other end is connected with the atmosphere. That is, through the cooperation control of the first control valve 410 and the second control valve 420, the steam recycling device can discharge the impurity gas such as air from the discharge pipeline 500, so as to reduce the amount of the impurity gas such as air conducted into the ejector pipeline 300.

[0049] Referring to Figure 1 Specifically, the ejector 100 is a jet pump, generally, the steam pressure of the main air inlet pipeline is greater than 3 bar, and the steam after penetrating the foam forming mold is below 1 bar, when the first control valve 410 is opened and the second control valve 420 is closed, the pressure of the waste steam conducted into the ejector pipeline 300 is necessarily greater than 0 bar, so that the high-pressure steam of the main air inlet pipeline can be used to eject the waste steam discharged from the foam forming mold 200, the pressure of the ejecting steam is increased, and the ejecting steam is mixed with the high-pressure steam of the main air inlet pipeline and then re-enters the foam forming mold 200 for penetrating the material, and the process is within the working range of the jet pump.

[0050] Referring to Figure 1 As shown in the figure, because there is foaming gas between the foam beads and in the foam cells, the steam for heating the foam beads can be not completely pure steam, and because the steam has high enthalpy, the steam recycling device can realize the recycling of the waste steam through the ejecting of the waste steam.

[0051] Referring to Figure 1 As can be understood, the steam recycling device further comprises an energy accumulator 600 connected with the ejector pipeline 300 for storing the ejecting steam.

[0052] Referring to Figure 1As shown, since the pressure and temperature in the accumulator 600 are basically stable, according to the Avogadro's law of gases, under the same temperature and pressure, the same volume of any gas contains the same number of molecules, and the average relative molecular mass of air is greater than the relative molecular mass of steam, that is, the density of air is greater than the density of steam, so that the residual air and other impurity gases move to the lower end of the accumulator 600, and the steam moves to the upper end of the accumulator 600, thereby realizing the stratification of steam and air, that is, in the accumulator 600, the purification of steam can be realized, and through the arrangement of the accumulator 600, the supply of the extracted steam is more stable.

[0053] Specifically, the accumulator 600 is communicated with an exhaust valve, and the exhaust valve is used to control the opening and closing of the accumulator 600. By opening and closing the exhaust valve, the internal pressure of the accumulator 600 can be controlled within a predetermined range. When the first control valve 410 is opened and the second control valve 420 is closed, the extraction pipeline 300 is communicated with the steam outlet 220, and through the pressure transmission of the accumulator 600, the pressure at the steam outlet 220 can be increased, thereby reducing the waste steam discharged from the foam forming mold 200, improving the penetration effect on the foam beads, and being beneficial to improve the pressure of the extracted steam, so that the extraction of the working steam on the extracted steam is more stable, and the amount of extracted waste steam is more.

[0054] Referring to Figure 1 As shown, it can be understood that considering that the temperature of the steam will decrease after penetrating the foam forming mold 200, the steam recycling device further comprises a heater 700 connected to the extraction pipeline 300 and located at one end of the accumulator 600 close to the ejector 100, for heating the extracted steam, so that the temperature of the mixed steam is increased. Compared with vaporizing water into steam, the steam recycling device can effectively reduce the required heat by re-heating the steam, so that the economic value of the steam recycling device is higher.

[0055] Referring to Figure 1 As shown, specifically, the heater 700 is a heat exchanger, and the heater 700 comprises a first heat exchange pipe, a second heat exchange pipe and a plurality of fins. The fins are connected with the first heat exchange pipe and the second heat exchange pipe to improve the heat exchange efficiency of the first heat exchange pipe and the second heat exchange pipe. The first heat exchange pipe is provided with a first heat exchange flow channel, and the second heat exchange pipe is provided with a second heat exchange flow channel. The first heat exchange flow channel is communicated with the extraction pipeline 300, and one end of the second heat exchange flow channel is connected with a component into which steam is introduced, and the other end is connected with a drain valve 450. The drain valve 450 is used to open and close the second heat exchange flow channel.

[0056] The first heat exchange channel is communicated with the ejector pipeline 300, so that the waste steam in the ejector pipeline 300 can pass through the first heat exchange channel, and one end of the second heat exchange channel is connected with the steam inlet component, that is, the steam recycling device can use the inlet steam as a heat medium, divert part of the inlet steam into the second heat exchange channel, and realize indirect heating of the ejecting steam through heat transfer between the inlet steam and the ejecting steam. Compared with vaporizing water into steam, the steam recycling device can effectively reduce the required heat by re-heating the steam, so that the economic value of the steam recycling device is higher. The inlet steam releases heat in the second heat exchange channel and condenses into liquid water. The other end of the second heat exchange channel is connected with a trap valve 450. Through the opening of the trap valve 450, the liquid water accumulated in the second heat exchange channel can be discharged.

[0057] Referring to Figure 1 It can be understood that the steam recycling device adds a heater 700 to the ejector pipeline 300, so that the temperature of the ejecting steam is increased. Due to the increase of the temperature of the ejecting steam, the temperature of the mixed steam at the last stage of the jet pump is increased, thereby improving the thermal quality of the mixed steam.

[0058] Referring to Figure 1 When the mixed steam penetrates the foam beads in the mold, the temperature of the mixed steam is increased, the temperature difference between the mixed steam and the foam beads is increased, and the heat transfer efficiency between the mixed steam and the foam beads is improved. According to Newton's cooling formula , wherein is the average temperature difference between the fluid and the solid surface on the heat exchange surface A, is the heat flow, and it can be seen that the heat flow increases with the increase of . The temperature of the material surface increases faster with the increase of the heat flow, rapidly expands and fuses, which is beneficial to reduce the penetration time of the steam.

[0059] Referring to Figure 1 It can be seen that the conventional foaming forming machine does not use a jet pump. When the high-temperature and high-pressure steam (greater than 3 bar, saturated steam at 3 bar, temperature of 144℃) is depressurized into the foam forming mold 200 and penetrates the foam beads, according to the law of conservation of energy, the depressurized steam is superheated steam, and the enthalpy is equal to the enthalpy of the steam before depressurization. According to the isentropic process, the temperature of the depressurized steam is equal to the temperature of the steam before depressurization.

[0060] Referring to Figure 1 When the depressurized steam passes through the low-temperature foaming forming mold, the foaming beads, and the pipeline, the temperature of the waste steam is reduced to about 110℃. When the low-temperature waste steam is injected into the ejector 100, the temperature of the mixed steam is reduced, which is not conducive to improving the penetration effect on the foam beads.

[0061] Referring toFigure 1 As shown, when the waste steam temperature is raised, the steam specific heat is about 2 Kj / kg℃, and the steam latent heat is about 2300 kj / kg, so raising the waste steam temperature by 40 degrees requires about 80 kj / kg of heat, which is 2 orders of magnitude lower than the heat required to vaporize water into water vapor. That is, the steam recycling device has better economic benefits and can effectively save energy by reusing the steam through heating, compared to the way of vaporizing water into water vapor.

[0062] Referring to Figure 1 As shown, it can be understood that the steam entering the ejector 100 through the main air inlet pipeline is working steam, the steam entering the ejector 100 through the ejector pipeline 300 is injection steam, and the steam discharged from the ejector 100 is mixed steam. Let the enthalpy of the working steam be , the enthalpy of the injection steam be , and the enthalpy of the mixed steam be , the temperature of the working steam be , the temperature of the injection steam be , and the temperature of the mixed steam be .

[0063] Referring to Figure 1 As shown, assuming that the inside of the steam ejector pump is an adiabatic system and is isentropic, the energy equation of the gas is: where H is the heat value of the gas, v is the flow rate of the gas, and const is a constant.

[0064] Referring to Figure 1 As shown, in an ideal gas, the relationship between the heat value H and the temperature T and the constant-pressure specific heat capacity can be expressed as , and the constant-pressure specific heat capacity can be expressed as , where k is the adiabatic index of the gas, and is the gas constant. Therefore, the energy equation of the gas can be written as .

[0065] Referring to Figure 1 As shown, due to the conservation of energy, + = . Substituting the above gas energy equation into the equation, we get , obviously, when the temperature rises, also rises, and finally also rises.

[0066] It should be understood that in other embodiments, the heater 700 can be an electromagnetic heater 700, an infrared heater 700, a resistance heater 700, etc. The steam recycling device can heat the injection steam passing through the injection pipeline 300 by the heater 700. Compared with vaporizing water into steam, the steam recycling device can effectively reduce the required heat by re-heating the steam, so that the economic value of the steam recycling device is higher.

[0067] Referring to Figure 1 It can be understood that the ejector 100, the injection pipeline 300, and the first control valve 410 together constitute a recycling assembly, and multiple recycling assemblies are provided, and the multiple recycling assemblies are connected with the energy accumulator 600.

[0068] Referring to Figure 1 It can be understood that the multiple recycling assemblies are connected with the energy accumulator 600, that is, one energy accumulator 600 can be connected with the foam forming molds 200 of the multiple recycling assemblies to store the steam of the multiple foam forming molds 200, so as to realize the interconnection of the multiple recycling assemblies and improve the stability of the injection steam supply.

[0069] Specifically, the steam recycling device further comprises a communication pipeline, the injection pipelines 300 of the multiple recycling assemblies are in communication with the communication pipeline, and the end of the communication pipeline is in communication with the energy accumulator 600, so that one energy accumulator 600 can be connected with the foam forming molds 200 of the multiple recycling assemblies to store the steam of the multiple foam forming molds 200.

[0070] Referring to Figure 1 It can be understood that specifically, each recycling assembly is connected with one foam forming mold 200, and the multiple foam forming molds 200 are connected with one discharge pipeline 500, that is, after the penetration is completed, the foam forming mold 200 is in communication with the discharge pipeline 500 by controlling the first control valve 410 to be closed and the second control valve 420 to be opened, which is beneficial to save the number of pipeline arrangements, reduce the occupied space, and make the structure of the steam recycling device simpler.

[0071] Referring to Figure 1 It can be understood that since the foam forming mold 200 contains air in the initial state, and there is foaming gas between the foam beads, the injection steam after the penetration contains impurity gas. In order to reduce or avoid the influence of the impurity gas on the reuse of the steam for penetration, the steam recycling device further comprises a steam purifier 800.

[0072] Referring to Figure 1As shown, the steam purifier 800 is connected to the ejector pipeline 300, when the ejecting steam passes through the steam purifier 800, the steam purifier 800 can be used to remove the impurity gas in the ejecting steam and the condensed water generated by the steam, so as to realize the purification of the steam, so as to realize the recycling of the steam.

[0073] Referring to Figure 1 As shown, it can be understood that, in particular, the steam purifier 800 includes an upper pipeline and a lower pipeline arranged in an up-down manner, and the steam purifier 800 is provided with a second inlet and a purification outlet at two ends respectively, the second inlet can be communicated with the steam outlet 220 of the foam forming mold 200, that is, the waste steam mixed with air and water can be introduced into the steam purifier 800 from the steam outlet 220, according to the Avogadro's law of gas, under the same temperature and pressure, the same volume of any gas contains the same number of molecules, and the average relative molecular mass of air is greater than that of steam, that is, the density of air is greater than that of steam, so that the waste steam introduced into the steam purifier 800 is stratified and deposited, the steam with relatively small density flows to the upper pipeline, and the air and water with relatively large density are deposited to the lower pipeline, so that the separation of steam, air and water can be realized, the first outlet is arranged at the tail end of the upper pipeline, the first outlet is communicated with the ejector inlet 120, and the purified steam can be introduced into the ejector 100 again from the first outlet, and the air and water can be collected from the second outlet.

[0074] Referring to Figure 1 As shown, it can be understood that the steam recycling device further includes a third control valve 430 connected to the ejector pipeline 300. In the ejector pipeline 300, the first control valve 410, the energy accumulator 600, the heater 700 and the third control valve 430 are arranged in sequence to realize the control of the ejector pipeline 300.

[0075] Referring to Figure 1 As shown, during the penetration process, the second control valve 420 is closed, and the first control valve 410 and the third control valve 430 are opened, so that the waste steam after penetration flows through the energy accumulator 600 and the heater 700 in sequence, so as to realize the storage and heating of the waste steam, and cooperate with the ejector 100 to realize the recycling of the waste steam.

[0076] Referring to Figure 1 As shown, in other processes, the second control valve 420 is opened, and the first control valve 410 and the third control valve 430 are closed, so that the waste steam and water after penetration can be introduced into the discharge pipeline 500, so as to reduce the amount of impurity gas such as air entering the ejector pipeline 300, which is beneficial to reduce the adverse effects of impurity gas such as air on steam recycling.

[0077] Referring to ​As shown, it can be understood that the steam recycling device further comprises a fourth control valve 440 connected to the main air inlet pipeline for controlling the opening and closing of the first inlet 110 and the component into which the steam is introduced.

[0078] It can be understood that in the present embodiment, the steam purifier 800 is arranged between the outlet end of the communication pipe and the ejector pipeline 300 and at the end of the heater 700 away from the ejector 100, so as to purify the steam flowing through the energy accumulator 600, and facilitate the removal of impurity gas in the ejecting steam, so as to purify the steam and facilitate the recycling of the steam.

[0079] It should be understood that in other embodiments, the steam purifier 800 can be a steam purification film, and the structure of the steam purification film can adopt the existing technology in the art, which will not be described here.

[0080] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A steam recycling device, characterized by, The application is applied to a foam forming mold (200) having a steam inlet (210) and a steam outlet (220), and the steam recycling device comprises: an ejector (100) having a first inlet (110) for connecting with a steam inlet component, an ejector inlet (120), and a mixing outlet (130) connected with the steam inlet (210); an ejector pipeline (300) having one end connected with the steam outlet (220) and the other end connected with the ejector inlet (120); a first control valve (410) arranged in the ejector pipeline (300) for controlling the on-off of the ejector pipeline (300) and the steam outlet (220); an exhaust pipeline (500) connected with the steam outlet (220); a second control valve (420) for controlling the on-off of the exhaust pipeline (500) and the steam outlet (220).

2. The steam recycling device of claim 1, wherein: Further comprising an energy accumulator (600) connected with the ejector pipeline (300) for storing the ejector steam.

3. The steam recycling device of claim 2, wherein: The energy accumulator (600) is connected with an exhaust valve for controlling the internal pressure of the energy accumulator (600).

4. The steam recycling device of claim 3, wherein: Further comprising a heater (700) connected with the ejector pipeline (300) and arranged at one end of the energy accumulator (600) close to the ejector (100) for heating the ejector steam.

5. The steam recycling device of claim 4, wherein: The heater (700) has a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is in communication with the ejector pipeline (300), one end of the second heat exchange channel is connected with the steam inlet component, and the other end is connected with a steam trap (450) for opening and closing the second heat exchange channel.

6. The steam recycling device of claim 4, wherein: Further comprising a third control valve (430) connected with the ejector pipeline (300), the energy accumulator (600) and the heater (700) are arranged between the first control valve (410) and the third control valve (430), and the third control valve (430) is used for controlling the on-off of the ejector pipeline (300) and the ejector inlet (120).

7. The steam recycling device of any one of claims 3 to 6, wherein: The ejector (100), the ejector pipeline (300) and the first control valve (410) jointly constitute a recycling assembly, a plurality of recycling assemblies are arranged, and the plurality of recycling assemblies are connected with the energy accumulator (600).

8. The steam recycling device of claim 1, wherein: Further comprising a steam purifier (800) connected with the ejector pipeline (300) for removing impurity gas in the ejector steam.

9. The steam recycling device of claim 8, wherein: The steam purifier (800) comprises an upper pipeline and a lower pipeline arranged in an upper-lower mode, the upper pipeline and the lower pipeline are communicated, two ends of the steam purifier (800) are respectively provided with a second inlet and a purification outlet, the purification outlet comprises a first outlet arranged at a tail of the upper pipeline and a second outlet arranged at a tail of the lower pipeline, the second inlet is connected with the steam outlet (220), and the first outlet is connected with the injection inlet (120).

10. The steam recycling device of claim 1, wherein: A fourth control valve (440) is further included, and the fourth control valve (440) is used for controlling on-off of the first inlet (110) and the component into which steam is introduced.

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