CN219454603U - Drying temperature control equipment for heat-sensitive materials - Google Patents

Abstract

The application discloses a drying temperature control equipment of heat-sensitive material belongs to the technical field of material drying. The heat-sensitive material drying temperature control device comprises a circulating water inlet pipe, a heat exchanger and a double-cone dryer, wherein the circulating water inlet pipe is communicated with a circulating pump through a heating water inlet pipe, the circulating pump is communicated with the heat exchanger through a pipeline, the heat exchanger is communicated with the double-cone dryer through a heating water outlet pipe, the double-cone dryer is communicated with the heating water inlet pipe, the heat exchanger is connected with a low-pressure steam inlet pipe, and the low-pressure steam inlet pipe is connected with external steam equipment. The application aims to dry the heat-sensitive material by using water as a drying medium, and solve the technical problem that when the drying temperature of the heat-sensitive material needs 100 ℃, steam or oil is generally selected as the drying medium, and water cannot be selected as the drying medium.

Description

Drying temperature control equipment for heat-sensitive materials

Technical Field

The application relates to the technical field of material drying, in particular to a drying temperature control device for heat-sensitive materials.

Background

The heat sensitive material is unstable when heated, and is extremely easy to undergo degradation reactions such as decomposition, polymerization, oxidation and the like. In the technical fields of food, biology, pharmacy, chemistry and the like, a plurality of heat-sensitive materials need to be dried, and at present, common materials are hot water, steam and hot oil as drying mediums. When the temperature of the dried material is required to be above 100 ℃, the material drying medium is usually selected to be hot oil or steam. The steam is used as a material drying medium, so that the phenomenon of local overheating can be generated, the heat-sensitive material is damaged, even the heat-sensitive material is locally melted, the crystal form of the material is changed, and the quality of the material is not in accordance with the requirement. Oil can accurately control temperature as a heat-sensitive material drying medium, but oil has small specific heat and enthalpy value of water, so that the problem of high energy consumption exists, and the problem of An Qun is also easy to cause when the hot oil leaks.

In the related art, for example, chinese patent document (publication No. CN1952570 a) describes a heat-sensitive material drying apparatus, which combines a rotary cylinder, a far-infrared radiation or microwave generator heating technique and a vacuum drying technique to solve the drying problem of heat-sensitive materials.

Chinese patent literature (bulletin number: CN 210688966U) describes a heat-sensitive material dryer, which comprises a main box body, wherein a plurality of layers of metal partition plates are arranged in the main box body, vertical plates are welded at the rear parts of the metal partition plates, small holes are uniformly formed in the vertical plates, circulating water pipes are arranged at the rear sides of the vertical plates, a water tank is arranged at the left side of the main box body, a circulating pump is arranged at the upper side of the water tank, and a first water pipe is connected to the left end of the circulating water pipes.

Chinese patent document (publication No. CN 203881047U) describes a boiling dryer comprising an air inlet device, an air heating device, a material drying container, and a moisture discharge device, which are in communication in sequence, which is used for rapid drying of materials.

Aiming at analysis of related technologies, most of the drying methods for heat-sensitive materials are low-temperature drying, and in this way, the materials are slow to dry and the drying efficiency of the materials is low. The high temperature is adopted to rapidly dry the materials, most of the adopted drying media are hot oil or steam, the steam is used as the medium to have the problems of local overheating and damage to the materials, the hot oil is used as the medium, the cost is high, meanwhile, the safety problem exists, and no effective solution is proposed at present for the problems existing in the related technology.

Disclosure of Invention

1. Technical problem to be solved by the utility model

According to the drying temperature control equipment for the heat-sensitive materials, the technical effect that water can be used as a drying medium to dry the heat-sensitive materials at a high temperature of more than 100 ℃ is achieved by only selecting steam or hot oil when the drying temperature of the heat-sensitive materials in the related technology is more than 100 ℃.

2. Technical proposal

In order to achieve the aim, the application provides a drying temperature control device for heat-sensitive materials.

The drying temperature control equipment device for the thermosensitive material comprises: the circulating water inlet pipe is communicated with the circulating pump through the heating water inlet pipe, the circulating pump is communicated with the heat exchanger through a pipeline, the heat exchanger is communicated with the double-cone dryer through the heating water outlet pipe, the double-cone dryer is communicated with the heating water inlet pipe, the heat exchanger is connected with a low-pressure steam inlet pipe, and the low-pressure steam inlet pipe is connected with external steam equipment.

Further, the low-pressure steam inlet pipe is communicated with the upper end of the heat exchanger.

Further, the lower end of the heat exchanger is connected with a drain pipe, and the drain pipe is provided with a drain valve.

Further, the low-pressure steam inlet pipe is provided with a pneumatic adjusting valve and a pneumatic cut-off valve.

Further, the pneumatic control valve and the pneumatic cut-off valve are connected with the controller.

Further, the temperature rising water outlet pipe is provided with a pressure transmitter and a temperature transmitter, and the pressure transmitter and the temperature transmitter are connected with the controller.

Further, the heating water outlet pipe is communicated with the expansion tank.

Further, the double-cone dryer is communicated with a circulating water outlet pipe which is used for water drainage.

Further, the circulating water inlet pipe, the circulating water outlet pipe, the heating water inlet pipe and the heating water outlet pipe are respectively provided with a circulating water inlet valve, a circulating water outlet valve, a heating water inlet valve and a heating water outlet valve.

Further, the bipyramid desiccator is equipped with rotary joint inlet tube and rotary joint outlet pipe, and rotary joint inlet tube intercommunication intensifies the outlet pipe, and rotary joint outlet pipe intercommunication intensifies the inlet tube.

3. Advantageous effects

The utility model provides a dry temperature control equipment of heat-sensitive material through with this intercommunication circulation inlet tube, intensification inlet tube, the circulating pump, the heat exchanger, intensification outlet pipe and bipyramid desiccator, bipyramid desiccator communicates the intensification inlet tube again and forms closed circulation water route, the mode through the low pressure steam intake pipe of heat exchanger intercommunication has reached the dry temperature control equipment temperature of heat-sensitive material and surpassed 100 ℃, makes the purpose of water as heat-sensitive material drying medium to realized technical effect, and then when having solved heat-sensitive material and need dry temperature surpassed 100 ℃, only can select oil or steam as drying medium's technical problem.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application. In the drawings:

FIG. 1 is a thermal sensitive material drying temperature control apparatus according to one embodiment of the present application;

reference numerals in the schematic drawings illustrate:

10. an expansion tank; 20. a controller; 21. a pressure transmitter; 22. a temperature transmitter; 23. a pneumatic control valve; 24. a pneumatic shut-off valve; 30. a circulation pump; 40. a heat exchanger; 41. a low pressure steam inlet pipe; 42. a water pipe; 43. a drain valve; 50. a double cone dryer; 51. a rotary joint water inlet pipe; 52. a rotary joint water outlet pipe; 60. a circulating water inlet pipe; 61. a circulating water inlet valve; 70. a circulating water outlet pipe; 71. a circulating water outlet valve; 80. heating the water inlet pipe; 81. heating up the water inlet valve; 90. heating the water outlet pipe; 91. heating up the water outlet valve.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. For example, references to the upper end of the heat exchanger 30 of the present utility model are made with respect to the accompanying drawings, and such descriptive terms are intended primarily to better describe the present application and its embodiments and are not intended to limit the indicated devices, elements or components to having or to be constructed and operated in a particular orientation.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, the present application refers to the circulation inlet pipe 60 being connected to the temperature rising inlet pipe 80, where the connection may be direct connection of an integrated structure, or indirect connection or sleeve connection through a valve or the like. For another example, the connection may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; the pneumatic control valve 23 and the pneumatic shut-off valve 24 are connected to the controller 20 in this application, and the electrical communication is understood as meaning either direct connection or indirect connection through an intermediate medium or internal communication between two devices, elements or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The heat-sensitive material drying temperature control equipment uses water as a drying medium, so that the problem that the heat-sensitive material drying temperature in the prior art needs to exceed 100 ℃ is solved, and only steam or hot oil can be selected. The thinking that this application provided is as follows, with the pipeline back of water injection this equipment, equipment lets in low pressure steam, increases its pressure to reach the temperature and surpass 100 ℃, further, the accuse temperature system of cooperation this application, through design accuse temperature system, solve temperature control's problem, avoid the temperature too high or too low, through the circulation of water route at equipment, solve the high temperature drying problem of heat-sensitive material. Design it is noted that embodiments and features of embodiments in this application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, a drying temperature control device for heat sensitive materials of the present embodiment, hereinafter referred to as "drying device", includes a circulation water inlet pipe 60, a temperature rising water inlet pipe 80, a circulation pump 30, a heat exchanger 40, a temperature rising water outlet pipe 90, a biconical dryer 50, and a low pressure steam inlet pipe 41, wherein the biconical dryer 50 is provided with a rotary joint water inlet pipe 51 and a rotary joint water outlet pipe 52. Specifically, the connection relationship of each component is that the circulation water inlet pipe 60 is communicated with the heating water inlet pipe 80, the heating water inlet pipe 80 is communicated with the circulation pump 30, the circulation pump 30 is communicated with the heat exchanger 40, the heat exchanger 40 is communicated with the heating water outlet pipe 90, the heating water outlet pipe 90 is connected with the rotary joint water inlet pipe 51 of the double-cone dryer 50, water flow circulates in the double-cone dryer 50, and the circulated water flow is communicated with the heating water inlet pipe 80 from the rotary joint water outlet pipe 52 arranged in the double-cone dryer 50.

All parts of the drying equipment are connected through the connection relationship, the water path is closed, water entering the drying equipment through the circulating water inlet pipe 60 is used as a drying medium of heat-sensitive materials under the action of the circulating pump 30, the circulating flow of water phase is realized in the water path of the whole closed loop, external pollutants such as dust and the like are prevented from contacting with water flow, and therefore the inside of the whole drying equipment is ensured to be in a cleaner state.

The heat exchanger 40 of the drying apparatus of this embodiment is connected to the low-pressure steam inlet pipe 41, and the position where the low-pressure steam inlet pipe 41 is connected to the heat exchanger 40 can be at the upper end, middle or lower end, preferably the upper end, of the heat exchanger 40, and the heat exchanger 40 can be a spiral wound tube type heat exchanger. The upper end has the advantage that the low-pressure steam directly enters the upper part of the heat exchanger 40 after entering the heat exchanger 40 through the low-pressure steam inlet pipe 41, and water flow formed after heat exchange flows into the lower end of the heat exchanger 40. The heat exchanger 40 is also communicated with a drain pipe 42, the drain pipe 42 is positioned below the low-pressure steam inlet pipe 41, the drain pipe 42 is provided with a drain valve 43, after the low-pressure steam completes heat exchange, formed water flow can directly flow out of the drain pipe 42 after flowing into the lower end of the heat exchanger 40, and the drain valve 43 is used for controlling the drainage of the formed water flow after the low-pressure steam completes heat exchange.

The above technical scheme realizes that water with the temperature exceeding 100 ℃ circularly flows in the drying equipment, and can realize uniform heating of the heat-sensitive material positioned on the biconical dryer 50, but the heat-sensitive material is a material unstable when being heated, and decomposition, oxidization and other deterioration reactions are easy to occur when the heat is encountered. Therefore, in order to better and more accurately realize the high-temperature drying of the heat-sensitive materials, higher requirements are put on the drying equipment, and not only uniform heating but also accurate control on the temperature of the drying equipment are required.

In order to achieve better drying of the heat sensitive material by the drying device, a pneumatic control valve 23 and a pneumatic cut-off valve 24 are arranged on the low pressure steam inlet pipe 41, and the low pressure steam flow entering the heat exchanger 40 and the pressure in the heat exchanger 40 can be controlled by opening and cutting off the pneumatic control valve 23 and the pneumatic cut-off valve 24. In order to further improve the automation degree of the drying equipment, the drying equipment is further provided with a controller 20, and the controller 20 is electrically connected with a pneumatic control valve 23 and a pneumatic cut-off valve 24 and is used for controlling the opening and cutting-off rhythms of the pneumatic control valve 23 and the pneumatic cut-off valve 24.

In order to enable the controller 20 to control the pneumatic control valve 23 and the pneumatic cut-off valve 24 to be opened and closed according to the temperature and pressure in the drying equipment so as to keep the water temperature in the drying equipment stable, a temperature rising water outlet pipe 90 communicated with the water outlet of the heat exchanger 40 is provided with a pressure transmitter 21 and a temperature transmitter 22, the pressure transmitter 21 and the temperature transmitter 22 are close to the water outlet of the heat exchanger 40, and the pressure transmitter 21 and the temperature transmitter 22 can accurately detect the pressure and the temperature in the temperature rising water outlet pipe 90 close to the heat exchanger 40.

The pressure transmitter 21 and the temperature transmitter 22 are electrically connected with the controller 20, and the controller 20 sets control logic in advance, and when the pressure transmitter 21 and the temperature transmitter 22 transmit the pressure and temperature information of the drying equipment detected by them to the controller 20. The controller 20 triggers the logic pre-approved by the controller 20 by means of the information of the pressure and the temperature of the drying equipment detected by the pressure transmitter 21 and the temperature transmitter 22, so as to automatically control the pneumatic control valve 23 and the pneumatic cut-off valve 24. In addition, the controller is electrically connected with a storage element, the storage element can record all information processed by the controller 20 to form electronic historical data, if crystallization or agglomeration and other phenomena occur in the equipment operation process, the reason of the problem can be clearly found out by checking and analyzing the historical data, and further the drying equipment is debugged further, so that the existing problem is solved.

The heating water outlet pipe 90 of the drying device is communicated with the expansion tank 10. According to the principle of expend with heat and contract with cold, can produce gas in the pipeline of drying equipment when being in the heating up process, the gas leads to the rivers to appear the water level fluctuation when drying equipment circulation flow, be the closed loop water route by drying equipment, can't get rid of water, in order to solve rivers water level fluctuation problem, heat up outlet pipe 90 intercommunication expansion tank 10, when producing gas more, the water flow is in the expansion tank through heat up outlet pipe 90 part inflow, after gas dissolves in water or discharges gradually, expansion tank 10 water level can drop to heat up outlet pipe 90, the temperature of circulating water heats to 120 ℃, expansion tank's volume, the installation height and connecting tube all have accurate calculation.

After the heat sensitive material is dried, the drying device is provided with a circulating water outlet pipe 70, and the circulating water outlet pipe 70 is communicated with the biconical dryer 50 in order to facilitate smooth drainage of water flow in the drying device. The circulation water inlet pipe 60, the circulation water outlet pipe 70, the temperature rising water inlet pipe 80 and the temperature rising water outlet pipe 90 of the drying device are respectively provided with a circulation water inlet valve 61, a circulation water outlet valve 71, a temperature rising water inlet valve 81 and a temperature rising water outlet valve 91 so as to control a water path in the drying device better. For example, when the water in the drying apparatus needs to be discharged, the temperature rising water inlet valve 81 is closed, the circulating water outlet valve 71 is opened, and the water flow is not fed into the temperature rising water inlet pipe 80 again under the action of the circulating pump 30, but is directly discharged from the circulating water outlet pipe 70. For another example, when the drying equipment needs to be cooled, the pneumatic control valve 23 and the pneumatic cut-off valve 24 are closed, the circulating water inlet valve 61 and the circulating water outlet valve 71 are opened, and the circulating pump 30 is opened, so that the water temperature in the drying equipment can be rapidly reduced, and the drying equipment can be rapidly cooled.

Briefly, the working flow of the drying device can be divided into three steps of water injection, heating and temperature control and water drainage. 1, water injection: the circulating water inlet valve 61 is opened, circulating water enters the warming inlet pipe 80, the warming inlet valve 81 is opened, circulating water enters the circulating pump 30, the circulating pump 30 is opened, and after the circulating water is injected into the interior of the drying and all the inlet and outlet pipes, the circulating water inlet valve 61 is closed. 2, heating and controlling the temperature: after the water injection process is finished, the pressure transmitter 21, the temperature transmitter 22, the pneumatic regulating valve 23 and the pneumatic cut-off valve 23 are regulated and controlled by the controller 20, and the drying equipment realizes automatic drying and temperature control and dries the heat-sensitive materials in the biconical dryer 50. 3, draining: the temperature rising water inlet valve 81 is closed, the circulating water outlet valve 71 is opened, and water flow is directly discharged from the circulating water outlet pipe 70 without entering the temperature rising water inlet pipe 80 under the action of the circulating pump 30.

The drying equipment of the application realizes the technical effect that the drying medium is water when the temperature of the heat-sensitive material is 100-120 ℃. The water is used as a drying medium, the cost performance is much higher than that of the water which is used as the drying medium in terms of heating efficiency, energy consumption, product quality control and the like, and the running cost of the water is twice as high as that of the water when the oil is used as the drying medium according to the market price. Meanwhile, the drying equipment of the application is highly automatic in the drying process of the thermosensitive materials, water is circulated in a closed loop in the drying equipment, the water utilization is more accurate, and waste is further avoided.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a drying temperature control equipment of heat-sensitive material, includes circulation inlet tube (60), heat exchanger (40) and bipyramid desiccator (50), its characterized in that: the circulating water inlet pipe (60) is communicated with the circulating pump (30) through the heating water inlet pipe (80), the circulating pump (30) is communicated with the heat exchanger (40) through a pipeline, the heat exchanger (40) is communicated with the double-cone dryer (50) through the heating water outlet pipe (90), the double-cone dryer (50) is communicated with the heating water inlet pipe (80), the heat exchanger (40) is connected with the low-pressure steam air inlet pipe (41), and the low-pressure steam air inlet pipe (41) is connected with external steam equipment.

2. The heat sensitive material drying and temperature control apparatus according to claim 1, wherein: the low-pressure steam inlet pipe (41) is communicated with the upper end of the heat exchanger (40).

3. The heat sensitive material drying and temperature control apparatus according to claim 2, wherein: the lower end of the heat exchanger (40) is connected with a drain pipe (42), and the drain pipe (42) is provided with a drain valve (43).

4. The heat sensitive material drying and temperature control apparatus according to claim 1, wherein: the low-pressure steam inlet pipe (41) is provided with a pneumatic regulating valve (23) and a pneumatic cut-off valve (24).

5. The heat sensitive material drying and temperature control apparatus according to claim 4, wherein: the pneumatic control valve (23) and the pneumatic cut-off valve (24) are connected with the controller (20).

6. The heat sensitive material drying and temperature control apparatus according to claim 1, wherein: the temperature rising water outlet pipe (90) is provided with a pressure transmitter (21) and a temperature transmitter (22), and the pressure transmitter (21) and the temperature transmitter (22) are connected with the controller (20).

7. The heat sensitive material drying and temperature control apparatus according to claim 6, wherein: the heating water outlet pipe (90) is communicated with the expansion tank (10).

8. The heat sensitive material drying and temperature control apparatus according to claim 1, wherein: the double-cone dryer (50) is communicated with a circulating water outlet pipe (70), and the circulating water outlet pipe (70) is used for draining water.

9. The heat sensitive material drying and temperature control apparatus according to claim 8, wherein: the circulating water inlet pipe (60), the circulating water outlet pipe (70), the heating water inlet pipe (80) and the heating water outlet pipe (90) are respectively provided with a circulating water inlet valve (61), a circulating water outlet valve (71), a heating water inlet valve (81) and a heating water outlet valve (91).

10. The heat sensitive material drying and temperature control apparatus according to claim 9, wherein: the double-cone dryer (50) is provided with a rotary joint water inlet pipe (51) and a rotary joint water outlet pipe (52), the rotary joint water inlet pipe (51) is communicated with the heating water outlet pipe (90), and the rotary joint water outlet pipe (52) is communicated with the heating water inlet pipe (80).